Multi-function double-speed rotary hammer

Description

Brief introduction

[0001] This patent relates to a rotary hammer which is one of kinds of power tools, it uses only one function knob to realize 5 functions, such as

a. only chiseling;

b. adjusting the working angle of flat chisel;

c. drilling & chiseling

d. only drilling with low speed;

e. only drilling with high speed.

Technical background

[0002] Many rotary hammers in market have no more than 4 functions, such as

a. only chiseling;

b. adjusting the working angle of flat chisel;

c. drill & chisel;

d. only drilling with low speed

[0003] Function a (only chiseling) is adapted for working at making wiring slot on wall which is made of concrete or brick, and removing tilt on the wall.

[0004] Function b (adjusting the working angle of flat chisel): sometimes, the end-user changes the working angle of flat chisel when working, they should set the function knob at this position, and select the proper angle, then put the function knob to the function A to work continuously.

[0005] Function c (drill & chisel): for drilling holes on the wall made of concrete or brick.

[0006] Function d (only drilling with low speed;): mainly used for drilling holes in steel or wood, when the diameter of hole is less than 10mm, but when diameter of hole is bigger than 10 mm, the drilling speed becomes lower.

[0007] WO 2008/000545 A1 and WO 2008/080658 A1, which fall within the terms of Article 54(3) EPC, disclose a multi-function double speed rotary hammer of this kind which further realizes the function of only drilling with high speed, whereby this function can be selected with the same knob as the other function.

[0008] DE 93 07 523 U1 discloses a multi-function double speed rotary hammer having the 5 functions of only chiseling, adjusting the working angle of flat chisel, drill & chisel, only drilling with low speed and only drilling with high speed, but all 5 functions are not achieved by using only one knob. There is a function knob and a locking pin for switching between the functions.

[0009] To compare with the tool based on this patent and rotary hammers in the market, this Multi-function Double-speed Rotary hammer has been added the function of only drilling with high speed (function E), it not only has a tight structure, it also can be operated simply, because it has only one knob which can conveniently achieve functions switch.

Content

[0010] For improving the drilling performance for small holes in steel or wood, this patent is related to invent one multi-function double-speed rotary hammer with single function knob to realize 5 functions such as

a. only chiseling;

b. adjusting the working angle of flat chisel;

c. drilling & chiseling

d. only drilling with low speed;

e. only drilling with high speed.

[0011] Then present invention is characterized that the tool use only one function to realize 5 functions above, especially it has the function e( only drilling with high speed).

[0012] The present invention shows how to realize the 5 functions in details:

[0013] The tool mainly includes front parts and rear part, the front part is gear system, the rear part is motor system; the front part includes gear housing 15, base 16, transmission shaft assembly 17, Impact shaft assembly 6, shaft lock assembly 44, the character is below:

[0014] Transmission shaft assembly 17 mainly includes transmission shaft 24, wobble bearing 19, and clutch 21 which can gear or ungear with transmission shaft 24, and spring 20 for clutch system.

[0015] Impact shaft assembly 6 mainly includes impact shaft 7, lock ring 8, low-speed gear 12 which in installed in the impact shaft 7 and may drive impact shaft 7, high-speed gear 9, back-forward spring 11, cylinder 14.

[0016] The tool also includes gear assembly 26 which is fixed on transmission shaft 24 and can move along with transmission shaft 24; gear assembly 26 includes a low-speed pinion 25 which gears or ungears with low-speed gear 12 in transmission shaft assembly 17 and a high-speed pinion 29 which gears with a high-speed gear 9 in transmission shaft assembly 17.

[0017] The tool also includes one function-adjusting board 34 for getting low-speed and one function-adjusting board 35 for getting high-speed, spring 41 is installed in the function-adjusting board 35 for getting high-speed; function-adjusting board 34 for getting low-speed is connected with side pin 37 and 38 which can move low-speed gear 12 and clutch 21 respectively along transmission shaft 24. The function-adjusting board 35 for getting high-speed connected with side pin 36 which may move gear assembly 26 along the direction of shaft.

[0018] The tool also has a inner function knob 32 in the base 16, outside function knob 33 is fixed with inner function knob 32 which is connected with one function-adjusting board 34 for getting low-speed which can move along transmission shaft 24 for getting low speed and a function-adjusting board 35 for getting high-speed which is fixed.

[0019] Usually, gear assembly 26 is fixed on transmission shaft 24 by a flat key 28, it only can move along with transmission shaft 24; at the two ends of gear assembly 26, it has low-speed pinion 25 and high-speed pinion 29; the slot 27 is in the middle area of gear assembly 26.

[0020] Low-speed gear 12 is fixed in the impact shaft 7 by a flat key 13, it only can axially move along with impact shaft 7. High-speed gear 9 is installed on the impact shaft 7 by key 10, it can only move along with impact shaft 7 axially. The lock ring 8 is used for stopping low-speed gear 12 and high-speed gear 9 to move axially; back-forward spring 11 is installed between low-speed gear 12 and high-speed gear 9 on the impact shaft 7.

[0021] In the middle of transmission shaft 24, there is a spline key 22 outside which may be geared with clutch 21; Lock ring 23 is fixed on transmission shaft 24, it can used for fixing clutch 21 axially.

[0022] The function-adjusting board 34 for getting low-speed is connected with side pin 37 and 38, it has one hole 50, there is teeth 49 at one side parallel with moving direction; the function-adjusting board 35 for getting high-speed is connected with side pin 36 which is fixed in the slot 27 of the sliding gear assembly 26, there is a hole 52 on the function-adjusting board 35 for getting high-speed, it has one teeth 51 in at least one side of hole 52 parallel with moving direction. Side pin 37 and 38 are perpendicular with function-adjusting board 34 for getting low-speed, side pin 37 is perpendicular with the side pin 38, and side pin 36 is perpendicular with function-adjusting board 35 for getting high-speed.

[0023] The spring 41 is installed on function-adjusting board 35 for getting high-speed; the bended bar 40 is installed in the slot 39 of the base 16. There are cylinder surface 47 and 48 in inner function knob 32, the cylinder surface 47 has several teeth 45 which can gear or ungear with teeth 49 in function-adjusting board 34 for getting low-speed. The cylinder surface 48 has several teeth 46 which can gear or ungear with teeth 51 in function-adjusting board 35 for getting high-speed.

[0024] Generally, back-forward spring 11 is used for the restoration back-forward spring 11 installed on the big gear is press spring, spring 20 installed on the clutch is press spring too, and the spring 41 installed on board is wiggly spring.

[0025] Function-adjusting board 34 for getting low-speed is installed in the slot 30 which is in the base 16 and parallel with transmission shaft 24 axially, and can slide along transmission shaft 24 axially in the groove, function-adjusting board 35 for getting high-speed is installed in the slot 31 which is in the base 16 and parallel with transmission shaft 24 axially, it can slide along transmission shaft 24 axially in the groove.

[0026] This tool can get 5-function mode by controlling the function-adjusting board 34 and 35 with outside function knob 33.

Mode 1: only chiseling

[0027] According to FIG 1, when rotating outside function knob 33 to position 1, function-adjusting board 34 for getting low-speed causes that:

1) Low-speed gear 12 ungears with low-speed pinion 25;

2) Low-speed gear 12 gears with shaft lock assembly 44 (see FIG 14);

3) The wobble bear 19 can rotate with transmission shaft 24 when clutch 21 gears with spline key 22 (see FIG 2) in transmission shaft 24;

The above 1), 2), 3) achieve the mode 1 (only chiseling)

Mode 2:

Adjusting the working angle of flat chisel when rotating outside function knob 33 to position 2 shown in FIG 1, the situation of function-adjusting board 34 for getting low-speed, function-adjusting board 35 for getting high-speed, inner function knob 32 will be shown in FIG 6, at this position, low-speed gear 12 ungears with shaft lock assembly 44 (see FIG 14), it achieves the function of adjusting the working angle of flat chisel.

Mode 3:

Drilling & chiseling when rotating outside function knob 33 to position 3 shown in FIG 1, the situation of function-adjusting board 34 for getting low-speed, function-adjusting board 35 for getting high-speed, inner function knob 32 will be shown in FIG 8, at this position, low-speed gear 12 gears with low-speed pinion 25, it achieves the function of Drilling & chiseling.

Mode 4:

Only drilling with low speed when rotating outside function knob 33 to position 4 shown in FIG 1, the situation of function-adjusting board 34 for getting low-speed, function-adjusting board 35 for getting high-speed, inner function knob 32 will be shown in FIG 10, at this position, the clutch21 ungears with spline key 22 in transmission shaft 24, it achieves the function of Only drilling with low speed.

Mode 5:

Only drilling with high speed when rotating outside function knob 33 to position 5 shown in FIG 1, the situation of function-adjusting board 34 for getting low-speed, function-adjusting board 35 for getting high-speed, inner function knob 32 will be shown in FIG 12, at this position, low-speed gear 12 ungears with low-speed pinion 25, but high-speed gear 9 gears with high-speed pinion 29.

[0028] In general, the above functions are corresponded to the following situation:

[0029] When anticlockwise rotating outside function knob 33 to position 1, function-adjusting board 34 for getting low-speed causes low-speed gear 12 ungears with low-speed pinion 25 which is included in gear assembly 26, and low-speed gear 12 gears with shaft lock assembly 44(see FIG 14); when clockwise rotating outside function knob 33 to position 2, shaft lock assembly 44 ungears with low-speed gear 12; when clockwise rotating outside function knob 33 to position 3, under the force of inner function knob 32, function-adjusting board 34 for getting low-speed causes low-speed gear 12 to gear with low-speed pinion 25 which is included in gear assembly 26; when clockwise rotating outside function knob 33 to position 4, under the force of inner function knob 32, function-adjusting board 34 for getting low-speed causes clutch 21 to ungear with transmission shaft 24; when clockwise rotating outside function knob 33 to position 5, function-adjusting board 34 for getting low-speed doesn't move, under the force of inner function knob 32, function-adjusting board 35 for getting high-speed causes not only low-speed gear 12 to ungear with low-speed pinion 25 which is included in gear assembly 26, but also high-speed gear 9 to gear with the high-speed pinion 25 which included in gear assembly 26.

[0030] Those 5 functions are achieved by the way below:

[0031] When rotating the outside function knob 33 to position 1 in FIG 1, function-adjusting board 34 for getting low-speed helps low-speed gear 12 to ungear with low-speed pinion 25 which is included in gear assembly 26. While Low-speed gear 12 gears with shaft lock assembly 44, it achieves the function of only chiseling;

[0032] When rotating the outside function knob 33 to position 2 in FIG 1, shaft lock assembly 44 ungears with low-speed gear 12, then it achieves the function of adjusting the working angle of flat chisel;

[0033] When rotating the outside function knob 33 to position 3 in FIG 1, under the pushing of inner function knob 32, function-adjusting board 34 for getting low-speed helps low-speed gear 12 to gear with low-speed pinion 25 which is included in gear assembly 26, it achieves the function of drilling & chiseling;

[0034] When rotating the outside function knob 33 to position 4 in FIG 1, under the pushing of inner function knob 32, function-adjusting board 34 for getting low-speed helps clutch 21 to ungear with transmission shaft 24, it achieves the function of only drilling with low-speed;

[0035] When rotating the outside function knob 33 to position 5 in FIG 1, function-adjusting board 34 for getting low-speed doesn't work, under the pushing of inner function knob 32, function-adjusting board 35 for getting high-speed helps high-speed gear 9 to gear with high-speed pinion 29 which is included in gear assembly 26, it achieves the function of only drilling with high-speed.

FIG 1 shows the sequence and almost positions of 5 functions, such as

Position 1: only chiseling;

Position 2: adjusting the working angle of flat chisel;

Position 3: drilling & chiseling

Position 4: only drilling with low speed;

Position 5: only drilling with high speed.

FIG 2 shows the situation of all components in gear housing when outside function knob 33 is set at the position 1 (only chiseling);

FIG 3 is the A-A section view of FIG 2.

FIG 4 shows the situation that inner function knob 32 gears with function-adjusting board 35 for getting high-speed and function-adjusting board 34 for getting low-speed when outside function knob 33 is set at the position 1 (only chiseling).

FIG 5 shows the situation of all components in gear housing when outside function knob 33 is set at the position 2 (adjusting the working angle of flat chisel);

FIG 6 shows the situation that inner function knob 32 gears with function-adjusting board 35 for getting high-speed and function-adjusting board 34 for getting low-speed when outside function knob 33 is set at the position 2 (adjusting the working angle of flat chisel);

FIG 7 shows the situation of all components in gear housing when outside function knob 33 is set at the position 3 (drilling & chiseling);

FIG 8 shows the situation that inner function knob 32 gears with function-adjusting board 35 for getting high-speed and function-adjusting board 34 for getting low-speed when outside function knob 33 is set at the position 3 (drilling & chiseling);

FIG 9 shows the situation of all components in gear housing when outside function knob 33 is set at the position 4 (only drilling with low speed);

FIG 10 shows the situation that inner function knob 32 gears with function-adjusting board 35 for getting high-speed and function-adjusting board 34 for getting low-speed when outside function knob 33 is set at the position 4 (only drilling with low speed);

FIG 11 shows the situation of all components in gear housing when outside function knob 33 is set at the position 5 (only drilling with high speed);

FIG 12 shows the situation that inner function knob 32 gears with function-adjusting board 35 for getting high-speed and function-adjusting board 34 for getting low-speed when outside function knob 33 is set at the position 5 (only drilling with high speed);

FIG 13 is one of 3D views of all components inside gear housing of the tool.

FIG 14 is another 3D view of all components inside gear housing of the tool.

FIG 15 is the 3D view of inner function knob 32.

FIG 16 shows the relationship among inner function knob 32, function-adjusting board 35 for getting high-speed, and function-adjusting board 34 for getting low-speed.

FIG 17 shows the relationship between inner function knob 32 and function-adjusting board 35 for getting high-speed.

Actual operation mode

[0036] More description in details will be done below based on attached drawings and Figures.

[0037] The invention relates to one multi-function double-speed rotary hammer which includes front part and rear part, the front part is gear system, the rear part is motor system.

[0038] The front part includes gear housing 15 and it's inside components, such as base 16, transmission shaft assembly 17, Impact shaft assembly 6, low-speed gear 12, high-speed gear 9, back-forward spring 11, function-adjusting board 34 for getting low-speed, function-adjusting board 35 for getting high-speed, spring 41, gear assembly 26 (including low-speed pinion 25 and high-speed pinion 29) and shaft lock assembly 44.

[0039] Transmission shaft assembly 17 mainly includes transmission shaft 24, pinion 18 fixed on transmission shaft 24, wobble bearing 19, clutch 21 which can gear or ungear with transmission shaft 24, and spring 20 for clutch system; the pinion in armature will gear with the pinion 18 and drives transmission shaft 24. There is inner spline key in clutch 21; the spline key is used to gear with wobble bearing 19.

[0040] Gear assembly 26 is installed with transmission shaft 24 by a flat key 28, it only can move along transmission shaft 24 axially. Gear assembly 26 has low-speed pinion 25 and high-speed pinion 29.

[0041] There is a spline key 22 in the middle area of transmission shaft 24; spline key 22 is used to make clutch 21 to gear with transmission shaft 24. The clutch is fixed to transmission shaft 24 with one Lock ring 23. Spring 20 is used for reversing clutch 21 to gear with spline key 22 of transmission shaft 24.

[0042] Impact shaft assembly 6 mainly includes impact shaft 7, lock ring 8, back-forward spring 11 for high-speed gear 9, low-speed gear 12 which in installed in the impact shaft 7 by key 13 and may drive impact shaft 7, high-speed gear 9, cylinder 14. High-speed 9 is installed in impact shaft 7 by key 10, and it only can move along with the impact shaft 7 axially. Lock ring 8 is used to position low-speed gear 12 and high-speed gear 9. Low-speed gear 12 and high-speed gear 9 are at the two ends of back-forward spring 11.

[0043] Function-adjusting board 35 for getting high-speed is positioned in the slot 31 parallel with the axis of transmission shaft 24. and it can move back and forward along the slot 31 in base 16. Function-adjusting board 34 for getting low-speed is positioned the slot 30 parallel with the axis of transmission shaft 24, it also can move back and forward along the slot 30 in base 16.

[0044] It is characterized that function-adjusting board 34 for getting low-speed has side pin 37 and side pin 38. Side pin 37 is used to move low-speed gear 12, and side pin 38 is used to move clutch 21. There is a hole 50 in function-adjusting board 34 for getting low-speed, the side parallel with its moving direction in the hole 50 has teeth 49; it is characterized that function-adjusting board 35 for getting high-speed has side pin 36 which is inserted into the slot 27 of gear assembly 26. There is a hole 52 in function-adjusting board 35 for getting high-speed, the middle of the side parallel with its moving direction in the hole 52 has teeth 51.

[0045] According to FIG 7 and FIG 14, the spring 41 is installed in the function-adjusting board 35 for getting high-speed. The bended bar 40 for spring 41 is installed in the slot 39 of base 16. The spring 41 can move the function-adjusting board 35 for getting high-speed and have teeth 51 in function-adjusting board 35 for getting high-speed and teeth 45 in inner function knob 32 to gear with each other.

[0046] Inner function knob 32 is positioned in one hole of base 16, it is characterized that there are cylinder surface 47 and 48 in inner function knob 32. There are several teeth 45 in cylinder surface 47 and several teeth 46 in cylinder surface 48. Teeth 45 can gear or ungear with teeth 49 in function-adjusting board 34 for getting low-speed. Teeth 46 can gear or ungear with teeth 51 in function-adjusting board 35 for getting high speed. Outside function knob 33 is connected with inner function knob 32. When outside function knob 33 is rotated, the function-adjusting board 34 and 35 can move axially along with transmission shaft 24 or keep still (see FIG 15, FIG 16, FIG 17).

[0047] The ways below show how to achieve 5 functions in details.

[0048] Remark: the original position is from position 1; we will rotate outside function knob 33 from it to the 5^th position.

Position 1: only chiseling (see FIG 2, FIG 4)

[0049] When outside function knob 33 is at the position 1 shown in FIG 1, teeth 51 of function-adjusting board 35 for getting high-speed ungears with teeth 46 of inner function knob 32; high-speed pinion 29 ungears with high-speed gear 9 by the force from function-adjusting board 35 for getting high-speed. The teeth 49 of function-adjusting board 34 for getting low-speed gears with teeth 45 of inner function knob 32. Under the supporting by side pin 37 in function-adjusting board 34 for getting low-speed gear 12 ungears with low-speed pinion 25 of gear assembly 26, low-speed gear 12 gears with shaft lock assembly 44, the impact shaft 6 can not be rotated in this situation. Under the help of back-forward spring 20, clutch 21 gears with spline key 22 of transmission shaft 24. And the wobble bearing can rotate axially with transmission shaft 24. It helps to achieve the function of "only chiseling".

Position 2: adjusting the working angle of flat chisel (see FIG 5, FIG 6)

[0050] When outside function knob 33 is rotated from position 1 to the position 2 shown in FIG 2, teeth 51 of function-adjusting board 35 for getting high-speed still ungears with teeth 46 of inner function knob 32, function-adjusting board 35 for getting high-speed doesn't move. Function-adjusting board 34 for getting low-speed is pushed forward by force from teeth 45 of inner function knob 32, low-speed gear 12 ungears with shaft lock assembly 44 under the help of back-forward spring 11, while low-speed gear 12 still doesn't gear with low-speed pinion 25, the other components don't move or change their position, then it achieves the function of adjusting the working angle of flat chisel. (see FIG 5, 6)

Position 3: drilling & chiseling

[0051] When rotating outside function knob 33 from position 2 to the position 3 shown in FIG 2, teeth 51 of function-adjusting board 35 for getting high-speed still doesn't gear with the teeth 46 of inner function knob 32, function-adjusting board 35 for getting high-speed doesn't move.

[0052] Function-adjusting board 34 for getting low-speed is pushed forward by force from teeth 45 of inner function knob 32, low-speed gear 12 gears with low-speed pinion 25 under the help of back-forward spring 11, the other components don't move or change their position. Now it achieves the function of Drilling & chiseling. (see FIG 7, 8)

Position 4: only drilling with low speed

[0053] When rotating outside function knob 33 from position 3 to the position 4 shown in FIG 2, teeth 51 of function-adjusting board 35 for getting high-speed still doesn't gear with the teeth 46 of inner function knob 32, function-adjusting board 35 for getting high-speed doesn't move. Function-adjusting board 34 for getting low-speed is pushed forward by the force from teeth 45 of inner function knob 32, side pin 38 of function-adjusting board 34 for getting low-speed presses down clutch 21, and this causes clutch 21 to ungear with spline key 22 in transmission shaft 24, wobble bearing 19 doesn't work, the back-forward spring 8 not only stops low-speed gear 12 to slide axially, but also helps low-speed gear 12 to gear with low-speed pinion 25, the other components don't move, then it achieves the function of Only drilling with low speed. (see FIG 9, 10)

Position 5: only drilling with high speed

[0054] When rotation outside function knob 33 from position 4 to the position 5 shown in FIG 2, teeth 49 of function-adjusting board 34 for getting low-speed ungears with teeth 45 of inner function knob 32, function-adjusting board 34 for getting low-speed doesn't move. Teeth 51 of function-adjusting board 35 for getting high-speed gears with teeth 45 of inner function knob 32 by the force of the spring 41 installed on the function-adjusting board 35, function-adjusting board 35 for getting high-speed moves under the force from inner function knob 32, this causes not only low-speed gear 12 to ungear with low-speed pinion 25 included in gear assembly 26, but also high-speed gear 9 to gear with the high-speed pinion 25 which is included in gear assembly 26, the other components don't move, now it achieves the function of only drilling with high speed. (see FIG 11, 12).

List of Reference Signs

[0055] 

6

impact shaft assembly

7

impact shaft

8

lock ring

9

high-speed gear

10

the key

11

back-forward spring

12

low-speed gear

13

key

14

cylinder

15

gear housing

16

base

17

transmission shaft assembly

18

pinion

19

wobble bearing

20

spring

21

clutch

22

spline key

23

lock ring

24

transmission shaft

25

low-speed pinion

26

gear assembly

27

the slot

28

the flat key

29

high-speed pinion

30

the slot

31

the slot

32

inner function knob

33

outside function knob

34

function-adjusting board 34 for getting low-speed

35

function-adjusting board 35 for getting high-speed

36

side pin

37

side pin

38

side pin

39

the slot

40

the bended bar

41

spring

44

shaft lock assembly

45

teeth

46

teeth

47

cylinder

48

cylinder

49

teeth

50

hole

51

teeth

52

hole

Claims

1. A tool such as a multi-function double-speed rotary hammer, having 5 functions of

- only chiseling,

- adjusting the working angle of flat chisel,

- drilling & chiseling,

- only drilling with low-speed, and

- the function of only drilling with high-speed,

whereby all 5 functions are achieved by using only one function knob,
including front parts which is a gear system, rear parts which is an engine system, whereby the front parts at least include a gear housing (15), a base (16), a transmission shaft assembly (17), an impact shaft assembly (6), and a shaft lock assembly (44), whereby

- the transmission shaft assembly (17), mainly includes a transmission shaft (24) connected with an engine system, a wobble bearing (19), a clutch (21), which is installed on the wobble bearing (19) and can slide axially for gearing and ungearing with the transmission shaft (24), and a spring (20) which is installed on the clutch (21);

- the impact shaft assembly (6) mainly includes an impact shaft (7), a lock ring (8), a low-speed gear (12) and a high-speed gear (9) which are installed on the impact shaft (7) and can slide axially for driving the impact shaft (7), a back-forward spring (11) which is installed on the gear and a piston (14) which is used for driving the drill bit inserted into impact shaft (7) to work axially;

- the front parts also include gear assembly (26) which is installed on the transmission shaft (24) and can slide axially, whereby the gear assembly (26) includes a low-speed pinion (25) which can gear or ungear with the low-speed gear (12) and a high-speed pinion (29) which can gear or ungear with the high-speed gear (9);

- the front parts include a function-adjusting board (34) for getting low-speed and a function-adjusting board (35) for getting high-speed which can slide along the transmission shaft (24) axially, whereby a spring (41) is installed on function-adjusting board (35) for getting high-speed, the function-adjusting board (34) for getting low-speed, has a side pin (37) and (38) used for respectively pulling low-speed gear (12) and clutch (21) axially and the function-adjusting board (35) for getting-high-speed, has a side pin 36 used for pulling gear assembly (26) axially; and

- the front parts, also include an inner function knob (32), which is fixed in a hole on the base (16), whereby an outside function (33) is installed on the inner function knob (32) which is connected with function-adjusting board (34) for getting low-speed and function-adjusting board (35) for getting high-speed, and they can slide along transmission shaft (24) axially or keep still.

2. The tool according to claim 1, wherein said 5 functions of only chiseling, adjusting the working angle of flat chisel, drilling & chiseling, only drilling with low-speed and only drilling with high-speed are achieved:

- when rotating the outside function knob (33) to a position 1, the function-adjusting board (34) for getting low-speed helps low-speed gear (12) to ungear with low-speed pinion (25) which is included in gear assembly (26), while low-speed gear (12) gears with shaft lock assembly (44), thereby achieving the function of only chiseling;

- when rotating the outside function knob (33) to a position 2, shaft lock assembly (44) ungears with low-speed gear (12), thereby achieving the function of adjusting the working angle of flat chisel;

- when rotating the outside function knob (33) to a position 3, under the pushing of inner function knob (32), the function-adjusting board (34) for getting low-speed helps low-speed gear (12) to gear with low-speed pinion (25) which is included in gear assembly (26), thereby achieving the function of drilling & chiseling;

- when rotating the outside function knob (33) to a position 4, under the pushing of inner function knob (32), the function-adjusting board (34) for getting low-speed helps clutch (21) to ungear with transmission shaft (24), thereby achieving the function of only drilling with low-speed;

- when rotating the outside function knob (33) to a position 5, the function-adjusting board (34) for getting low-speed is not working and under the pushing of inner function knob (32), the function-adjusting board (35) for getting high-speed helps high-speed gear (9) to gear with high-speed pinion (29) which is included in gear assembly (26), thereby achieving the function of only drilling with high-speed.

3. The tool according to claim 1, characterized in that the gear assembly (26) is installed and slide along on the transmission shaft (24), whereby are connected by a key (28).

4. The tool according to claim 3, characterized in that the gear assembly (26) embodies the low-speed pinion (25) and the high-speed pinion (29), and there is a slot (27) in the middle area of gear assembly (26).

5. The tool according to claim 1, characterized in that the low-speed gear (12) is installed in the impact shaft (7) by a flat key (13), such that it only can axially move along with impact shaft (7), the high-speed gear (9) is installed on the impact shaft (7) by the key (10), such that it can only move along with impact shaft (7) axially, and a lock ring (8) is provided which is used for positioning low-speed gear (12) and high-speed gear (9) axially, whereby a back-forward spring (11) is installed between low-speed gear (12) and high-speed gear (9) on the impact shaft (7).

6. The tool according to claim 1, characterized in that there is a spline key (22) in the middle area of the transmission shaft (24), the spline key (22) is used to make clutch (21) to gear with transmission shaft (24), whereby a lock ring (23) for positioning clutch (21) axially is covered on the transmission shaft (24).

7. The tool according to claim 1, characterized in that there is a hole (50) on the function-adjusting board (34) for getting low-speed, whereby teeth (49) are arranged on one side of the hole (50).

8. The tool according to claim 1, characterized in that the function-adjusting board (35) for getting high-speed has side pin (36) which is inserted into the slot (27) of the gear assembly (26), whereby there is a hole (52) in function-adjusting board (35) for getting high-speed and teeth (51) are arranged in the hole (52) in the middle of the side which is parallel with its moving direction.

9. The tool according to claim 1, characterized in that the spring (41) is installed in the function-adjusting board (35) for getting high-speed, whereby a bended bar (40) for the spring (41) is installed in the slot (39) of base (16) and/or whereby the spring (41) works as a torsion spring.

10. The tool according to claim 1, characterized in that the side pins (37) and (38) are perpendicular to the function-adjusting board (34) for getting low-speed and side pin (37) is perpendicular to the side pin (38) and/or side pin (36) is perpendicular to the function-adjusting board (35) for getting high-speed.

11. The tool according to claim 1, characterized in that there are cylinder surfaces (47) and (48) on inner function knob (32), whereby on cylinder surface (47), there are several teeth (45) which can gear and ungear with the teeth (49) of function-adjusting board (34) for getting low-speed and on cylinder surface (48), there are several teeth (46) which can gear and ungear with the teeth (51) of the function-adjusting board (35) for getting high-speed.

12. The tool according to claim 1, characterized in that a back-forward spring (11) is installed on the gear or a spring (20) is installed on the clutch (21), whereby the back-forward spring (11) or the spring (20) work as a pressure spring.

13. The tool according to claim 1, characterized in that function-adjusting board (34) for getting low-speed is installed into the slot (30) of the base (16), the slot (30) is axially parallel with transmission shaft (24), and the function-adjusting board (34) for getting low-speed can axially slide along transmission shaft (24) in the slot (30).

14. The tool according to claim 1, characterized in that the function-adjusting board (35) for getting high-speed is installed into slot (31) of the base (16), the slot (31) is axially parallel with transmission shaft (24), and the function-adjusting board (35) for getting high-speed can axially slide along transmission shaft (24) in the slot (31).

Ansprüche

1. Werkzeug, wie ein Multifunktions-Bohrhammer mit zwei Geschwindigkeiten, welcher die folgenden Funktionen aufweist:

- nur Stemmen,

- Einstellen des Arbeitswinkels des Flachmeißels,

- Bohren & Stemmen,

- nur Bohren mit geringer Geschwindigkeit, und

- die Funktion des ausschließlich Bohrens mit hoher Geschwindigkeit,

wobei alle 5 Funktionen unter Verwendung nur eines Funktionsknopfs erreicht werden,
mit vorderen Teilen, bei welchen es sich um ein Getriebesystem handelt, und hinteren Teilen, bei welchen es sich um ein Motorsystem handelt, wobei die vorderen Teile zumindest ein Getriebegehäuse (15), eine Basis (16), eine Getriebewellenanordnung (17), eine Schlagwellenanordnung (6) und eine Wellenverriegelungsanordnung (44) aufweisen, wobei

- die Getriebewellenanordnung (17) hauptsächlich eine mit einem Motorsystem verbundene Getriebewelle (24), ein Taumellager (19), eine Kupplung (21), die an dem Taumellager (19) angebracht ist und zum Zusammengreifen mit und Trennen von der Getriebewelle (24) axial gleitend verschiebbar ist, und eine Feder (20) aufweist, welche an der Kupplung (21) angebracht ist;

- die Schlagwellenanordnung (6) hauptsächlich eine Schlagwelle (7), einen Verriegelungsring (8), ein Zahnrad (12) für langsame Geschwindigkeit und ein Zahnrad (9) für hohe Geschwindigkeit, die an der Schlagwelle (7) angebracht sind und zum Treiben der Schlagwelle (7) axial gleiten können, eine sich vor und zurück bewegende Feder (11), die an dem Zahnrad angebracht ist, und einen Kolben (14) aufweist, der verwendet wird, um die in die Schlagwelle (7) eingesetzte Bohrspitze für ein axiales Arbeiten zu treiben;

- die vorderen Teile ferner eine Getriebeanordnung (26) aufweisen, welche auf der Getriebewelle (24) angebracht ist und axial gleitend verschiebbar ist, wobei die Getriebeanordnung (26) ein Ritzel (25) für die langsame Geschwindigkeit, das mit dem Zahnrad (12) für die langsame Geschwindigkeit (12) in Eingriff oder außer Eingriff bringbar ist, und ein Ritzel (29) für die hohe Geschwindigkeit aufweist, das mit dem Zahnrad (9) für die hohe Geschwindigkeit (29) in Eingriff oder außer Eingriff bringbar ist;

- die vorderen Teile eine Funktionseinstellplatte (34) zum Einstellen der geringen Geschwindigkeit und eine Funktionseinstellplatte (35) zum Einstellen der hohen Geschwindigkeit aufweisen, welche axial entlang der Getriebewelle (24) verschiebbar sind, wobei eine Feder (41) an der Funktionseinstellplatte (35) zum Einstellen der hohen Geschwindigkeit angebracht ist, wobei die Funktionsplatte (34) zum Einstellen der langsamen Geschwindigkeit einen Seitenstift (37) und (38) aufweist, der dazu dient, das Zahnrad (12) für die langsame Geschwindigkeit beziehungsweise die Kupplung (21) in axialer Richtung zu ziehen, und die Funktionsplatte (35) zum Einstellen der hohen Geschwindigkeit einen Seitenstift (36) aufweist, der dazu dient, die Getriebeanordnung (26) in axialer Richtung zu ziehen; und

- die vorderen Teile ferner einen inneren Funktionsknopf (32) aufweisen, der in einem Loch auf der Basis (16) befestigt ist, wobei ein äußerer Funktionsknopf (33) an dem inneren Funktionsknopf (32) angebracht ist, welcher mit der Funktionseinstellplatte (14) zum Einstellen der langsamen Geschwindigkeit und der Funktionseinstellplatte (35) zum Einstellen der hohen Geschwindigkeit verbunden ist, und sie sind axial entlang der Getriebewelle (24) verschiebbar oder feststehend.

2. Werkzeug nach Anspruch 1, bei welchem die 5 Funktionen des ausschließlich Stemmens, des Einstellens des Arbeitswinkels des Flachmeißels, des Bohrens und Stemmens, des ausschließlich Bohrens mit langsamer Geschwindigkeit und des ausschließlich Bohrens mit hoher Geschwindigkeit erreicht werden:

- wenn der äußere Funktionsknopf (33) in die Position 1 gedreht wird, bewirkt die Funktionseinstellplatte (34) zum Einstellen der langsamen Geschwindigkeit das Trennen des Zahnrades (12) für die langsame Geschwindigkeit von dem in der Getriebeanordnung (26) enthaltenen Ritzel (25) für die langsame Geschwindigkeit, während das Zahnrad (12) für die langsame Geschwindigkeit in Eingriff mit der Wellenverriegelungsanordnung (44) gelangt, wodurch die Funktion des ausschließlich Stemmens erreicht wird;

- wenn der äußere Funktionsknopf (33) in die Position 2 gedreht wird, wird die Wellenverriegelungsanordnung (44) von dem Zahnrad (12) für die langsame Geschwindigkeit getrennt, wodurch die Funktion des Einstellens des Arbeitswinkels des Flachmeißels erreicht wird;

- wenn der äußere Funktionsknopf (33) unter Drücken des inneren Funktionsknopfs (32) in die Position 3 gedreht wird, bewirkt die Funktionseinstellplatte (34) zum Einstellen der langsamen Geschwindigkeit das Zusammengreifen des Zahnrades (12) für die langsame Geschwindigkeit mit dem in der Getriebeanordnung (26) enthaltenen Ritzel (25) für die langsame Geschwindigkeit, wodurch die Funktion des Bohrens & Stemmens erreicht wird;

- wenn der äußere Funktionsknopf (33) unter Drücken des inneren Funktionsknopfs (32) in die Position 4 gedreht wird, bewirkt die Funktionseinstellplate (34) zum Einstellen der langsamen Geschwindigkeit das Trennen der Kupplung (21) von der Getriebewelle (24), wodurch die Funktion des ausschließlich Bohrens mit langsamer Geschwindigkeit erreicht wird;

- wenn der äußere Funktionsknopf (33) in die Position 5 gedreht wird, wirkt die Funktionseinstellplatte (34) zum Einstellen der langsamen Geschwindigkeit nicht, und unter Drücken des inneren Funktionsknopfs (32) bewirkt die Funktionseinstellplatte (35) zum Einstellen der hohen Geschwindigkeit das Zusammengreifen des Zahnrades (9) für die hohe Geschwindigkeit mit dem in der Getriebeanordnung (26) enthaltenen Ritzel (29) für die hohe Geschwindigkeit, wodurch die Funktion des ausschließlich Bohrens mit hoher Geschwindigkeit erreicht wird.

3. Werkzeug nach Anspruch 1, dadurch gekennzeichnet, dass die Getriebeanordnung (26) auf der Getriebewelle (24) angebracht und gleitend verschiebbar ist, wobei die Verbindung durch eine Passfeder (28) erfolgt.

4. Werkzeug nach Anspruch 3, dadurch gekennzeichnet, dass die Getriebeanordnung (26) das Ritzel (25) für die langsame Geschwindigkeit und das Ritzel (29) für die schnelle Geschwindigkeit aufweist und ein Schlitz im Mittelbereich (27) der Getriebeanordnung (26) ausgebildet ist.

5. Werkzeug nach Anspruch 1, dadurch gekennzeichnet, dass das Zahnrad (12) für die langsame Geschwindigkeit auf der Schlagwelle (7) mittels einer flachen Passfeder (13) derart angebracht ist, dass es sich nur zusammen mit der Schlagwelle (7) axial bewegen kann, das Zahnrad (9) für die schnelle Geschwindigkeit durch die Passfeder (10) auf der Schlagwelle (7) derart angebracht ist, dass es sich nur zusammen mit der Schlagwelle (7) axial bewegen kann, und ein Verriegelungsring (8) vorgesehen ist, welcher dem axialen Positionieren des Zahnrades (12) für die langsame Geschwindigkeit und des Zahnrades (9) für die hohe Geschwindigkeit dient, wobei eine sich vor und zurück bewegende Feder (11) zwischen dem Zahnrad (12) für die langsame Geschwindigkeit und dem Zahnrad (9) für die hohe Geschwindigkeit auf der Schlagwelle (7) angebracht ist.

6. Werkzeug nach Anspruch 1, dadurch gekennzeichnet, dass eine Keilwelle (22) im Mittelbereich der Getriebewelle (24) vorgesehen ist, wobei die Keilwelle (22) dazu dient, das Angreifen der Kupplung (21) an der Getriebewelle (24) zu bewirken, wobei ein Verriegelungsring (23) zum axialen Positionieren der Kupplung (21) auf der Getriebewelle (24) abgedeckt ist.

7. Werkzeug nach Anspruch 1, dadurch gekennzeichnet, dass ein Loch (50) in der Funktionseinstellplatte (34) zum Einstellen der langsamen Geschwindigkeit vorgesehen ist, wobei auf einer Seite des Lochs (50) Zähne (49) angeordnet sind.

8. Werkzeug nach Anspruch 1, dadurch gekennzeichnet, dass die Funktionseinstellplatte (35) zum Einstellen der schnellen Geschwindigkeit einen Seitenstift (36) aufweist, der in den Schlitz (27) der Getriebeanordnung (26) eingeführt ist, wobei in der Funktionseinstellplatte (35) zum Einstellen der schnellen Geschwindigkeit ein Loch (52) vorgesehen ist und in dem Loch Zähne (52) in der Mitte der Seite angeordnet sind, die parallel zu ihrer Bewegungsrichtung verläuft.

9. Werkzeug nach Anspruch 1, dadurch gekennzeichnet, dass die Feder (41) in der die Funktionseinstellplatte (35) zum Einstellen der schnellen Geschwindigkeit angebracht ist, wobei eine gebogene Stange (40) für die Feder (41) in dem Schlitz (39) der Basis (16) angeordnet ist und/oder die Feder (41) als Torsionsfeder wirkt.

10. Werkzeug nach Anspruch 1, dadurch gekennzeichnet, dass die Seitenstifte (37) und (38) senkrecht zu der Funktionseinstellplatte (34) zum Einstellen der langsamen Geschwindigkeit verlaufen und der Seitenstift (37) senkrecht zu dem Seitenstift (38) verläuft und/oder der Seitenstift (36) senkrecht zu der Funktionseinstellplatte (35) zum Einstellen der schnellen Geschwindigkeit verläuft.

11. Werkzeug nach Anspruch 1, dadurch gekennzeichnet, dass an dem inneren Funktionsknopf (32) Zylinderflächen (47) und (48) vorgesehen sind, wobei auf der Zylinderfläche (47) mehrere Zähne (45) vorgesehen sind, welche geeignet sind, mit den Zähnen (49) der Funktionseinstellplatte (34) zum Einstellen der langsamen Geschwindigkeit zusammenzugreifen und von diesen getrennt zu werden, und wobei auf der Zylinderfläche (48) mehrere Zähne (46) vorgesehen sind, welche geeignet sind, mit den Zähnen (51) der Funktionseinstellplatte (35) zum Einstellen der schnellen Geschwindigkeit zusammenzugreifen.

12. Werkzeug nach Anspruch 1, dadurch gekennzeichnet, dass eine sich vor und zurück bewegende Feder (11) an dem Zahnrad angebracht ist oder eine Feder (20) an der Kupplung (21) angebracht ist, wobei die sich vor und zurück bewegende Feder (11) oder die Feder (20) als Druckfeder wirkt.

13. Werkzeug nach Anspruch 1, dadurch gekennzeichnet, dass die Funktionseinstellplatte (34) zum Einstellen der langsamen Geschwindigkeit in dem Schlitz (30) der Basis (16) angebracht ist, wobei der Schlitz (30) axial parallel zu der Getriebewelle (24) verläuft und die Funktionseinstellplatte (34) zum Einstellen der langsamen Geschwindigkeit in dem Schlitz (30) axial entlang der Getriebewelle (24) gleiten kann.

14. Werkzeug nach Anspruch 1, dadurch gekennzeichnet, dass die Funktionseinstellplatte (35) zum Einstellen der schnellen Geschwindigkeit in dem Schlitz (31) der Basis (16) angebracht ist, wobei der Schlitz (31) axial parallel zu der Getriebewelle (24) verläuft und die Funktionseinstellplatte (35) zum Einstellen der schnellen Geschwindigkeit in dem Schlitz (31) axial entlang der Getriebewelle (24) gleiten kann.

Revendications

1. Outil tel qu'un marteau rotatif double vitesse multifonction, ayant 5 fonctions de :

- ciselage uniquement,

- réglage de l'angle de travail du ciseau plat,

- perçage et ciselage,

- perçage uniquement à faible vitesse, et

- la fonction de perçage uniquement à grande vitesse,

moyennant quoi les 5 fonctions sont toutes obtenues en n'utilisant qu'un seul bouton de fonction,
comprenant des parties avant qui constituent un système d'engrenages, des parties arrière qui constituent un système de moteur, moyennant quoi les parties avant comprennent au moins un logement d'engrenages (15), une base (16), un ensemble d'arbre de transmission (17), un ensemble d'arbre d'impact (6) et un ensemble de verrouillage d'arbre (44), moyennant quoi :

- l'ensemble d'arbre de transmission (17) comprend principalement un arbre de transmission (24) raccordé à un système de moteur, un palier oscillant (19), un embrayage (21) qui est installé sur le palier oscillant (19) et peut glisser axialement pour s'engrener et se désengrener avec l'arbre de transmission (24), et un ressort (20) qui est installé sur l'embrayage (21) ;

- l'ensemble d'arbre d'impact (6) comprend principalement un arbre d'impact (7), une bague de retenue (8), un engrenage à faible vitesse (12) et un engrenage à grande vitesse (9) qui sont installés sur l'arbre d'impact (7) et peuvent glisser axialement pour entraîner l'arbre d'impact (7), un ressort avant-arrière (11) qui est installé sur l'engrenage et un piston (14) qui est utilisé pour entraîner le foret inséré dans l'arbre d'impact (7) pour fonctionner axialement ;

- les parties avant comprennent également un ensemble d'engrenages (26) qui est installé sur l'arbre de transmission (24) et peut glisser axialement, moyennant quoi l'ensemble d'engrenages (26) comprend un pignon à faible vitesse (25) qui peut s'engrener ou se désengrener avec l'engrenage à faible vitesse (12) et un pignon à grande vitesse (29) qui peut s'engrener ou se désengrener avec l'engrenage à grande vitesse (9) ;

- les parties avant comprennent un panneau de réglage de fonction (34) permettant d'obtenir une faible vitesse et un panneau de réglage de fonction (35) permettant d'obtenir une grande vitesse qui peuvent glisser le long de l'arbre de transmission (24) axialement, moyennant quoi un ressort (41) est installé sur le panneau de réglage de fonction (35) permettant d'obtenir une grande vitesse, le panneau de réglage de fonction (34) permettant d'obtenir une faible vitesse comporte une broche latérale (37) et (38) utilisée pour tirer respectivement l'engrenage à faible vitesse (12) et l'embrayage (21) axialement et le panneau de réglage de fonction (35) permettant d'obtenir une grande vitesse comporte une broche latérale (36) utilisée pour tirer l'ensemble d'engrenages (26) axialement ; et

- les parties avant comprennent également un bouton de fonction interne (32) qui est fixé dans un trou sur la base (16), moyennant quoi une fonction extérieure (33) est installée sur le bouton de fonction interne (32) qui est raccordé au panneau de réglage de fonction (34) permettant d'obtenir une faible vitesse et au panneau de réglage de fonction (35) permettant d'obtenir une grande vitesse, et elles peuvent glisser le long de l'arbre de transmission (24) axialement ou rester immobiles.

2. Outil selon la revendication 1, dans lequel lesdites 5 fonctions de ciselage uniquement, réglage de l'angle de travail du ciseau plat, perçage et ciselage, perçage uniquement à faible vitesse et perçage uniquement à grande vitesse sont obtenues :

- en tournant le bouton de fonction extérieur (33) sur la position 1, le panneau de réglage de fonction (34) permettant d'obtenir une faible vitesse aide l'engrenage à faible vitesse (12) à se désengrener avec le pignon à faible vitesse (25) qui est compris dans l'ensemble d'engrenages (26), tandis que l'engrenage à faible vitesse (12) s'engrène avec l'ensemble de verrouillage d'arbre (44), obtenant ainsi la fonction de ciselage uniquement ;

- en tournant le bouton de fonction extérieur (33) sur la position 2, l'ensemble de verrouillage d'arbre (44) se désengrène avec l'engrenage à faible vitesse (12), obtenant ainsi la fonction de réglage d'angle de travail du ciseau plat ;

- en tournant le bouton de fonction extérieur (33) sur la position 3, lorsque l'on appuie sur le bouton de fonction interne (32), le panneau de réglage de fonction (34) permettant d'obtenir une faible vitesse aide l'engrenage à faible vitesse (12) à s'engrener avec le pignon à faible vitesse (25) qui est compris dans l'ensemble d'engrenages (26), obtenant ainsi la fonction de perçage et ciselage ;

- en tournant le bouton de fonction extérieur (33) sur la position 4, lorsque l'on appuie sur le bouton de fonction interne (32), le panneau de réglage de fonction (34) permettant d'obtenir une faible vitesse aide l'embrayage (21) à se désengrener avec l'arbre de transmission (24), obtenant ainsi la fonction de perçage uniquement à faible vitesse ;

- en tournant le bouton de fonction extérieur (33) sur la position 5, le panneau de réglage de fonction (34) permettant d'obtenir une faible vitesse ne fonctionne pas et lorsque l'on appuie sur le bouton de fonction interne (32), le panneau de réglage de fonction (35) permettant d'obtenir une grande vitesse aide l'engrenage à grande vitesse (9) à s'engrener avec le pignon à grande vitesse (29) qui est compris dans l'ensemble d'engrenages (26), obtenant ainsi la fonction de perçage uniquement à grande vitesse.

3. Outil selon la revendication 1, caractérisé en ce que l'ensemble d'engrenages (26) est installé et glisse le long de l'arbre de transmission (24), moyennant quoi ils sont raccordés par une clavette (28).

4. Outil selon la revendication 3, caractérisé en ce que l'ensemble d'engrenages (26) intègre le pignon à faible vitesse (25) et le pignon à grande vitesse (29), et il existe une fente (27) dans la zone milieu de l'ensemble d'engrenages (26).

5. Outil selon la revendication 1, caractérisé en ce que l'engrenage à faible vitesse (12) est installé sur l'arbre d'impact (7) par une clavette plate (13), de sorte qu'il peut se déplacer uniquement axialement le long de l'arbre d'impact (7), l'engrenage à grande vitesse (9) est installé sur l'arbre d'impact (7) par la clavette (10), de sorte qu'il peut uniquement se déplacer le long de l'arbre d'impact (7) axialement, et une bague de retenue (8) est prévue qui est utilisée pour positionner l'engrenage à faible vitesse (12) et l'engrenage à grande vitesse (9) axialement, moyennant quoi un ressort avant-arrière (11) est installé entre l'engrenage à faible vitesse (12) et l'engrenage à grande vitesse (9) sur l'arbre d'impact (7).

6. Outil selon la revendication 1, caractérisé en ce qu'une clavette à cannelures (22) se trouve dans la zone milieu de l'arbre de transmission (24), la clavette à cannelures (22) est utilisée pour amener l'embrayage (21) à s'engrener avec l'arbre de transmission (24), moyennant quoi une bague de retenue (23) permettant de positionner l'embrayage (21) axialement est recouverte sur l'arbre de transmission (24).

7. Outil selon la revendication 1, caractérisé en ce qu'un trou (50) se trouve sur le panneau de réglage de fonction (34) permettant d'obtenir une faible vitesse, moyennant quoi des dents (49) sont disposées sur un côté du trou (50).

8. Outil selon la revendication 1, caractérisé en ce que le panneau de réglage de fonction (35) permettant d'obtenir une grande vitesse comporte une broche latérale (36) qui est insérée dans la fente (27) de l'ensemble d'engrenages (26), moyennant quoi un trou (52) se trouve dans le panneau de réglage de fonction (35) permettant d'obtenir une grande vitesse et des dents (51) sont disposées dans le trou (52) au milieu du côté qui est parallèle à son sens de déplacement.

9. Outil selon la revendication 1, caractérisé en ce que le ressort (41) est installé dans le panneau de réglage de fonction (35) permettant d'obtenir une grande vitesse, moyennant quoi une barre courbée (40) pour le ressort (41) est installée dans la fente (39) de la base (16) et/ou moyennant quoi le ressort (41) fonctionne comme un ressort de torsion.

10. Outil selon la revendication 1, caractérisé en ce que les broches latérales (37) et (38) sont perpendiculaires au panneau de réglage de fonction (34) permettant d'obtenir une faible vitesse et la broche latérale (37) est perpendiculaire à la broche latérale (38) et/ou la broche latérale (36) est perpendiculaire au panneau de réglage de fonction (35) permettant d'obtenir une grande vitesse.

11. Outil selon la revendication 1, caractérisé en ce qu'il y a des surfaces cylindriques (47) et (48) sur le bouton de fonction interne (32), moyennant quoi sur la surface cylindrique (47), il y a plusieurs dents (45) qui peuvent s'engrener et se désengrener avec les dents (49) du panneau de réglage de fonction (34) permettant d'obtenir une faible vitesse et sur la surface cylindrique (48), il y a plusieurs dents (46) qui peuvent s'engrener et se désengrener avec les dents (51) du panneau de réglage de fonction (35) permettant d'obtenir une grande vitesse.

12. Outil selon la revendication 1, caractérisé en ce qu'un ressort avant-arrière (11) est installé sur l'engrenage ou un ressort (20) est installé sur l'embrayage (21), moyennant quoi le ressort avant-arrière (11) ou le ressort (20) fonctionne comme un ressort de pression.

13. Outil selon la revendication 1, caractérisé en ce que le panneau de réglage de fonction (34) permettant d'obtenir une faible vitesse est installé dans la fente (30) de la base (16), la fente (30) est parallèle axialement à l'arbre de transmission (24), et le panneau de réglage de fonction (34) permettant d'obtenir une faible vitesse peut glisser axialement le long de l'arbre de transmission (24) dans la fente (30).

14. Outil selon la revendication 1, caractérisé en ce que le panneau de réglage de fonction (35) permettant d'obtenir une grande vitesse est installé dans une fente (31) de la base (16), la fente (31) est parallèle axialement à l'arbre de transmission (24), et le panneau de réglage de fonction (35) permettant d'obtenir une grande vitesse peut glisser axialement le long de l'arbre de transmission (24) dans la fente (31).

Drawing