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EP 3 056 313 B1 |
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EUROPEAN PATENT SPECIFICATION |
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Mention of the grant of the patent: |
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06.09.2017 Bulletin 2017/36 |
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Date of filing: 10.02.2015 |
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International Patent Classification (IPC):
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Multi-mode wrench
Multimodaler Schlüssel
Clé multimodale
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Designated Contracting States: |
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AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL
NO PL PT RO RS SE SI SK SM TR |
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Date of publication of application: |
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17.08.2016 Bulletin 2016/33 |
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Proprietor: Wu, Yi-Min |
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Taichung City 407 (TW) |
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Inventor: |
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- Wu, Yi-Min
Taichung City 407 (TW)
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Representative: Lang, Christian |
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LangPatent Anwaltskanzlei
IP Law Firm
Rosenheimer Straße 139 81671 München 81671 München (DE) |
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References cited: :
EP-A1- 2 737 977 US-A1- 2011 296 960 US-A1- 2014 311 300
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GB-A- 2 197 609 US-A1- 2013 319 184
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Note: Within nine months from the publication of the mention of the grant of the European
patent, any person may give notice to the European Patent Office of opposition to
the European patent
granted. Notice of opposition shall be filed in a written reasoned statement. It shall
not be deemed to
have been filed until the opposition fee has been paid. (Art. 99(1) European Patent
Convention).
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BACKGROUND OF INVENTION
1. FIELD OF INVENTION
[0001] The present invention relates to a one-way wrench and, more particularly, to a multi-mode
one-way wrench according to the preamble of claim 1.
2. RELATED PRIOR ART
[0003] A one-way wrench (or "ratchet wrench") includes a head, a toothed wheel placed in
the head, and a pawl placed in the head. The head can be rotated in an active direction
to bring the pawl into engagement with the toothed wheel so that the head rotates
the toothed wheel via the pawl. The head can be rotated in an idle direction to allow
the pawl to rattle on the toothed wheel so that the head does not rotate the toothed
wheel in the idle direction.
[0004] In operation, the toothed wheel is engaged with a nut for example. The head is rotated
in the active direction to rotate the toothed wheel for an angle, and the head is
rotated in the idle direction for an adequate angle before the head is rotated in
the active direction again to rotate the wheel. This process is repeated so that the
nut is engaged with a screw or removed from a screw. Such a one-way wrench is particularly
useful in a limited space.
[0005] The head must be rotated in the idle direction for at least a minimum angle before
the head can rotate the toothed wheel in the active direction again. The more the
teeth of the toothed wheel are, the smaller the minimum angle is, i.e., the more convenient
the operation of the one-way wrench is. For example, the minimum angle is 10° where
the toothed wheel includes 36 teeth but only 5° where the toothed wheel includes 72
teeth. However, the more the teeth are, the smaller and hence weaker they are. It
is difficult to increase the convenience without jeopardizing the strength in a conventional
one-way wrench.
[0007] Therefore, the present invention is intended to obviate or at least alleviate the
problems encountered in prior art.
SUMMARY OF INVENTION
[0008] It is the primary objective of the present invention to provide a multi-mode one-way
wrench.
[0009] To achieve the foregoing objective, there is provided a multi-mode one-way wrench
according to claim 1 that includes a head, a toothed wheel, a leading pawl, at least
one following pawl and a switch. The head includes cutouts in communication with a
chamber. The toothed wheel rests in the chamber and includes teeth. The pawls are
movably rest in the cutouts and adapted for alternate engagement with the toothed
wheel. The following pawl includes a stem. The switch rests on the head and made with
at least one arched groove for receiving and guiding the stem to move the following
pawl between a first mode for engagement with the toothed wheel and a second mode
kept from the toothed wheel. The cutouts are biased from one another by an angle of
360°×(M+1/L)÷N, wherein L is an integer for representing the number of the cutouts,
M is any proper integer, and N is an integer for representing the number of the teeth.
[0010] Other objectives, advantages and features of the present invention will be apparent
from the following description referring to the attached drawings.
BRIEF DESCRIPTION OF DRAWINGS
[0011] The present invention will be described via detailed illustration of the preferred
embodiment referring to the drawings wherein:
FIG. 1 is a perspective view of a convenient and strong multi-mode one-way wrench
according to the preferred embodiment of the present invention;
FIG. 2 is an exploded view of the multi-mode one-way wrench shown in FIG. 1;
FIG. 3 is a top view of the multi-mode one-way wrench shown in FIG. 1, with a cover
removed;
FIG. 4 is a cross-sectional view of the multi-mode one-way wrench shown in FIG. 1;
FIG. 5 is a top view of the multi-mode one-way wrench shown in FIG. 1;
FIG 6 is a top view of the multi-mode one-way wrench shown in FIG. 5, with the cover
removed; and
FIG. 7 is a top view of the multi-mode one-way wrench in another position than shown
in shown in FIG. 5; and
FIG. 8 is a top view of the multi-mode one-way wrench shown in FIG. 7, with the cover
removed.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENT
[0012] Referring to FIGS. 1 and 2, a multi-mode one-way wrench 10 includes a head 11, a
handle 12, a toothed wheel 30, two pawl units 40 and 50, a cover 61 and a switch 70
according to the preferred embodiment of the present invention. The head 11 is formed
at an end of the handle 12. It should be noted that there is no clear borderline between
the head 11 and the handle 12 since they are made one. The head 11 includes a wall
13 extending on a planar face 19 and extending around a shallow cavity 15.
[0013] The head 11 further includes a circular chamber 16 made in the planar face 19, a
circular opening 17 made in an annular flange 18 extending from the wall of the circular
chamber 16, and a bore 14 made in the planar face 19. The shallow cavity 15, the circular
chamber 16 and the circular aperture are in communication with one another.
[0014] The head 11 further includes two cutouts 20 each formed with an opening 21, an arched
face 22, a vertical planar face 23, a sub-cutout 24, a floor 25 and a bore 26. The
opening 21 is made between arched face 22 and the vertical planar face 23. Each cutout
20 is in communication with the circular chamber 16 via the opening 21. Both of the
arched face 22 and the vertical planar face 23 extend on the floor 25. The sub-cutout
24 is made between the arched face 22 and the planar face 23. The bore 26 is made
in the floor 25. For clarity, one of the cutouts 20 will be referred to as the "first
cutout 20" and the other cutout 20 the "second cutout 20" in the following description.
[0015] The toothed wheel 30 is formed with two axles 33, teeth 31 and a non-circular aperture
32. One of the axles 33 (the "lower axle") extends from a lower side of the toothed
wheel 30 while the other axle 33 (the "upper axle") extends from an upper side of
the toothed wheel 30. The teeth 31 extend from the periphery of a middle portion of
the toothed wheel 30 in a radial manner. The non-circular aperture 32 axially extends
throughout the toothed wheel 30 including the axle 33. The non-circular aperture 32
can receive a nut or a head of a threaded bolt in use.
[0016] In another embodiment, the non-circular aperture 32 can be replaced with a non-circular
insert for insertion in a corresponding bore made in a tool bit (not shown) that in
turn can receive a nut or a head of a threaded bolt in use.
[0017] The second cutout 20 is biased from the first cutout 20 by an angle θ regulated by
the following equation:
wherein N is an integer that represents the number of the teeth 31 and M is any proper
integer.
[0018] In the preferred embodiment, there are thirty-six (36) identical teeth 31. Hence,
each tooth 31 covers 10°. The angle θ between the first and second cutouts 20 is 35°
for example.
[0019] The pawl unit 40 includes a pawl 41 and a spring 45. The pawl 41 includes a key 43
extending, in a radial direction, from an axle 42 made with a reduced end 44.
[0020] The pawl unit 50 includes a pawl 51 and a spring 55. The pawl 51 includes a key 53
extending, in a radial direction, from an axle 52 made with a reduced end 54. The
pawl 51 is identical to the pawl 41 except for including an additional stem 56 extending
upwards from the key 53.
[0021] The cover 61 is made with a circular opening 62 and two apertures 63 and 64. The
cover 61 is made in compliance with the shallow cavity 15.
[0022] The switch 70 is a flat element. The switch 70 includes a circular opening 71, an
arched groove 72, two recesses 73 made in a lower face, and a ridge 74 formed on an
upper face.
[0023] The toothed wheel 30 is placed in the circular chamber 16. The middle portion of
the toothed wheel 30, on and around which the teeth 31 are formed, is supported on
the annular flange 18. The lower axle 33 extends out of the head 11 through the circular
opening 17. The annular flange 18 is used as a bearing for the lower axle 33. The
upper axle 33 extends out of the head 11 through the shallow cavity 15.
[0024] The pawl 41 and the spring 45 are placed in the first cutout 20. The axle 42 is inserted
in the sub-cutout 24 of the first cutout 20. The reduced lower end 44 is inserted
in the bore 26 of the first cutout 20 so that the pawl 41 is allowed to pivot. The
spring 45 is compressed between the key 43 and the arched wall 22 of the first cutout
20. Thus, the spring 45 tends to push the key 43 into engagement with at least one
of the teeth 31, out of the opening 21 of the first cutout 20.
[0025] The pawl 51 and the spring 55 are placed in the second cutout 20. The axle 52 is
inserted in the sub-cutout 24 of the second cutout 20. The reduced lower end 54 is
inserted in the bore 26 of the second cutout 20 so that the pawl 51 is allowed to
pivot. The spring 55 is compressed between the key 53 and the arched wall 22 of the
second cutout 20. Thus, the spring 55 tends to push the key 53 into engagement with
at least one of the teeth 31, out of the opening 21 of the second cutout 20. The stem
56 extends out of the second cutout 20.
[0026] A spring 60 and a ball 65 are placed in the bore 14. The spring 60 is compressed
between the ball 65 and a closed end of the bore 14. Thus, the spring 60 tends to
push the ball 65 out of an open end of the bore 14.
[0027] The cover 61 is supported on the head 11. The cover 61 is placed in the shallow cavity
15 and confined by the wall 13. The circular opening 62 is aligned with the circular
chamber 16 to allow the upper axle 33 to extend beyond the cover 61 via the circular
opening 62. The cover 61 is used as a bearing for the upper axle 33. The aperture
63 is aligned with the second cutout 20 to allow the stem 56 to extend beyond the
cover 61 via the aperture 63. The aperture 63 is made of a diameter larger than that
of the stem 56 to allow the stem 56 to move in the aperture 63. The aperture 64 is
aligned with the bore 14 to allow the ball 65 to extend beyond the cover 61 via the
aperture 64.
[0028] The switch 70 is placed on the cover 61. The circular opening 71 is aligned with
the circular opening 62 to allow the upper axle 33 to extend beyond the switch 70
through the circular opening 71. One of the recesses 73 receives the ball 65. The
arched groove 72 receives the tip of the stem 56.
[0029] A C-clip 34 is engaged with the upper axle 33. Another C-clip 35 is engaged with
the lower axle 33. Thus, all of the elements are kept in position.
[0030] Referring to FIGS. 5 and 6, the multi-mode one-way wrench 10 is placed in a half-tooth
mode as the switch 70 is placed in a first position. One of the recesses 73 receives
the ball 65 to keep the switch 70 in the first position and the multi-mode one-way
wrench 10 in the half-tooth mode in an elastic manner.
[0031] In the half-tooth mode, the key 53 of the pawl 51 is allowed to pivot while the stem
56 is allowed to move in the arched groove 72. Hence, the key 53 of the pawl 51 is
allowed to engage with and disengage from the teeth 31.
[0032] The key 43 of the pawl 41 is in contact with a tail side of a tooth 31. The head
11 and the handle 12 are pivoted counterclockwise. The head 11 rotates the toothed
wheel 30 since the head 11 pushes the pawl 41 and the pawl 41 pushes the tooth 31.
The key 53 of the pawl 51 is in contact with a leading side of another tooth 31.
[0033] Then, the handle 12 can be pivoted clockwise. Thus, the key 43 of the pawl 41 slides
on the leading side of a tooth 31 while the key 53 of the pawl 51 slides on the leading
side of another tooth 31.
[0034] After the head 11 is pivoted clockwise for as small as half of the angle θ of one
tooth 31, i.e., 5°, the head 11 can be pivoted counterclockwise again to bring the
key 53 of the pawl 51 into contact with the tail side of a tooth 31. Thus, the head
11 can rotate the toothed wheel 30.
[0035] The above-mentioned process can be repeated to bring the key 43 of the pawl 41 back
into contact with the tail side of a tooth 31 and return the key 53 of the pawl 51
into contact with the leading side of another tooth 31. That is, the pawls 41 and
51 are alternately used to rotate the toothed wheel 30. The idle stroke, i.e., the
clockwise rotation of the head 11 can be as small as half of the angle θ of one tooth
31, i.e., 5°.
[0036] Referring to FIGS. 7 and 8, the multi-mode one-way wrench 10 is placed in a one-tooth
mode as the switch 70 is placed in a second position. The other recess 73 receives
the ball 65 to retain the switch 70 in the second position and the multi-mode one-way
wrench 10 in the one-tooth mode in an elastic manner.
[0037] In the one-tooth mode, the key 53 of the pawl 51 is prevented from contacting any
tooth 31 since the stem 56 is restrained by the arched groove 72. Only the key 43
of the pawl 41 is allowed to contact the teeth 31. The key 43 of the pawl 41 is in
contact with the tail side of a tooth 31. The head 11 can be pivoted clockwise to
rotate the toothed wheel 30 because the head 11 pushes the pawl 41 and the key 43
of the pawl 41 pushes the tail side of the tooth 31.
[0038] Then, the handle 12 can be pivoted clockwise. Thus, the key 43 of the pawl 41 slides
on the leading side of a tooth 31 while the key 53 of the pawl 51 slides on the leading
side of another tooth 31.
[0039] After the head 11 is pivoted clockwise for as small as the angle θ of one tooth 31,
i.e., 10°, the head 11 can be pivoted counterclockwise again to bring the key 43 of
the pawl 41 back into contact with the tail side of a tooth 31. Thus, the head 11
can rotate the toothed wheel 30.
[0040] The present invention has been described via the detailed illustration of the preferred
embodiment. Those skilled in the art can derive variations from the preferred embodiment
without departing from the scope of the present invention. Therefore, the preferred
embodiment shall not limit the scope of the present invention defined in the claims.
1. A multi-mode one-way wrench including:
a head (11) made with a chamber (16) and cutouts (20) in communication with the chamber;
a toothed wheel (30) rotationally placed in the chamber (16) and formed with teeth
(31); and pawls (41,51) for alternate engagement with the toothed wheel and each pivotally
placed in a corresponding one of the cutouts (20), wherein the pawls include a leading
pawl (41) and at least one following pawl (51),
characterized in that the following pawl (51) is formed with a stem (56); and a switch (70) placed on the
head (11) and made with at least one arched groove (72) for receiving and guiding
the stem (56) to move the following pawl (51) between a first mode for engagement
with the toothed wheel (30) and a second mode kept from the toothed wheel (30), wherein
the cutouts (20) are biased from one another by an angle of 360°×(M+1/L)÷N, wherein
L is an integer for representing the number of the cutouts (20), M is any proper integer,
and N is an integer for representing the number of the teeth (31).
2. The multi-mode one-way wrench according to claim 1, wherein the stem (56) is movable
along the arched groove (72) when the following pawl (51) rattles on the teeth (31)
of the toothed wheel (30) in the second mode.
3. The multi-mode one-way wrench according to claim 1, including springs (45,55) each
placed in a corresponding one of the cutouts (20) to bias the corresponding pawl (41,51)
toward the toothed wheel (30).
4. The multi-mode one-way wrench according to claim 1, wherein each of the cutouts (20)
includes a sub-cutout (24) made in a wall thereof, wherein each of the pawls (41,51)
includes an axle (42,52) inserted in the sub-cutout (24) of the corresponding cutout
(20).
5. The multi-mode one-way wrench according to claim 4, wherein each of the cutouts (20)
includes a floor (25) and a bore (26) made in the floor, wherein the axle (42,52)
of each of the pawls (41,51) includes a reduced end inserted in the bore (26) of the
corresponding cutout (20).
6. The multi-mode one-way wrench according to claim 4, wherein each of the cutouts (20)
includes a vertical face (23) extending next to the sub-cutout (24), wherein the vertical
face (26) pushes a key (43) of the corresponding pawl which in turn pushes a tooth
of the toothed wheel (30).
7. The multi-mode one-way wrench according to claim 4, wherein each of the pawls (41,51)
includes a key (43,53) extending from the axle (42,52) in a radial direction, wherein
the key (43,53) is adapted for engagement with the teeth (31) of the toothed wheel
(30).
8. The multi-mode one-way wrench according to claim 7, wherein the stem (56) extends
from the key (53) of the following pawl (51).
9. The multi-mode one-way wrench according to claim 1, wherein the switch (70) is pivotally
connected to the head (11).
10. The multi-mode one-way wrench according to claim 1, including a cover (61) connected
to the head (11) to keep the toothed wheel (30) in the head and the switch (70) on
the head.
11. The multi-mode one-way wrench according to claim 10, wherein the cover (61) is placed
between the head (11) and the switch (70).
12. The multi-mode one-way wrench according to claim 11, wherein the cover (61) includes
an aperture (63) via which the stem (56) extends into the arched groove (72).
13. The multi-mode one-way wrench according to claim 1, including a handle (12) extending
from the head (11).
1. Multimodaler Einweg - Schreubenschlüssel, umfassend:
einen Kopf (11), der mit einer Kammer (16) und mit der Kammer in Verbindung stehenden
Aussparungen (20) ausgebildet ist,
ein Zahnrad (30), das drehbar in der Kammer (16) angeordnet ist und mit Zähnen (31)
ausgebildet ist, und
Sperrklinken (41, 51) zum wechselweisen Eingriff mit dem Zahnrad (30), welche jeweils
schwenkbar in einer korrespondierenden der Aussparungen (20) angeordnet sind, wobei
die Sperrklinken eine Führungssperrklinke (41) und wenigstens eine Folgesperrklinke
(51) beinhalten, dadurch gekennzeichnet, dass die Folgesperrklinke (51) mit einem Schaft (56) ausgebildet ist, und
ein Schalter (70) an dem Kopf (11) angeordnet ist und mit wenigstens einer bogenförmigen
Rille (72) zur Aufnahme und Führung des Schafts (56) ausgebildet ist, um die Folgesperrklinke
(51) zwischen einem ersten Eingriffsmodus mit dem Zahnrad (30) und einem zweiten von
dem Zahnrad (30) getrennten Modus zu bewegen, wobei die Aussparungen (20) zueinander
in einem Winkel von 360°×(M+1/L)÷N schräg stehen, wobei L eine ganze Zahl ist, die
der Anzahl der Aussparungen (20) entspricht, M eine beliebige geeignete ganze Zahl
ist, und
wobei N eine ganze Zahl ist, die der Anzahl der Zähne (31) entspricht.
2. Multimodaler Einweg - Schraubenschlüssel nach Anspruch 1, bei welchem der Schaft (56)
entlang der bogenförmigen Rille (72) beweglich ist, wenn die Folgesperrkilinke (51)
in dem zweiten Modus an den Zähnen (31) des Zahnrads (30) rattert.
3. Multimodaler Einweg - Schraubenschlüssel nach Anspruch 1, welcher Federn (45, 55)
umfasst, die jeweils in einer korrespondierenden der Aussparungen (20) angeordnet
sind, um die korrespondierende Sperrklinke (41, 51) in Richtung des Zahnrads (30)
vorzuspannen.
4. Multimodaler Einweg - Schraubenschlüssel nach Anspruch 1, bei welchem jede der Aussparungen
(20) eine Unteraussparung (24) beinhaltet, die in deren Wand ausgebildet ist, wobei
jede der Sperrklinken (41, 51) eine Achse (42, 52) umfasst, die in die Unteraussparung
(24) der korrespondierenden Aussparung (20) eingesetzt ist.
5. Multimodaler Einweg - Schraubenschlüssel nach Anspruch 4, bei welchem jede der Aussparungen
(20) einen Boden (25) und ein in dem Boden ausgebildetes Loch (26) aufweist, wobei
die Achse (42, 52) von jeder der Sperrklinken (41, 51). ein reduziertes Ende aufweist,
das in das Loch (26) der korrespondierenden Aussparung (20) eingesetzt ist.
6. Multimodaler Einweg - Schraubenschlüssel nach Anspruch 4, bei welchem jede der Aussparungen
(20) eine vertikale Fläche (23) umfasst, die sich neben der Unteraussparung (24) erstreckt,
wobei die vertikale Fläche (23) gegen einen Keil (43) der korrespondierenden Sperrklinke
drückt, welcher dann wiederum gegen einen Zahn des Zahnrads (30) drückt.
7. Multimodaler Einweg - Schraubenschlüssel nach Anspruch 4, bei welchem jede der Sperrklinken
(41, 51) einen Keil (43, 53) umfasst, der sich in einer radialen Richtung von der
Achse (42, 52) erstreckt, wobei der Keil (43, 53) angepasst ist, um mit den Zähnen
(31) des Zahnrads (30) in Eingriff zu kommen.
8. Multimodaler Einweg - Schraubenschlüssel nach Anspruch 7, bei welchem sich der Schaft
(56) von dem Keil (53) der Folgesperrklinke (51) erstreckt.
9. Multimodaler Einweg - Schraubenschlüssel nach Anspruch 1, bei welchem der Schalter
(70) schwenkbar mit dem Kopf (11) verbunden ist.
10. Multimodaler Einweg - Schraubenschlüssel nach Anspruch 1, welcher eine Abdeckung (61)
umfasst, die mit dem Kopf (11) verbunden ist, um das Zahnrad (30) in dem Kopf und
den Schalter (70) an dem Kopf zu halten.
11. Multimodaler Einweg Schraubenschlüssel nach Anspruch 10, bei welchem die Abdeckung
(61) zwischen dem Kopf (11) und dem Schalter (70) angeordnet ist.
12. Multimodaler Einweg - Schraubenschlüssel nach Anspruch 11, bei welchem die Abdeckung
(61) eine Öffnung (63) umfasst, durch welche sich der Schaft (56) in die bogenförmige
Rille (72) erstreckt.
13. Multimodaler Einweg - Schraubenschlüssel nach Anspruch 1, welcher einen Griff (12)
umfasst, der sich von dem Kopf (11) erstreckt.
1. Clé unidirectionnelle multimode comportant:
une tête (11) réalisée avec une chambre (16) et des découpes (20) en communication
avec la chambre;
une roue dentée (30) placée en rotation dans la chambre (16) et formée avec des dents
(31); et
des cliquets (41, 51) pour un engrènement alterné avec la roue dentée et chacun étant
placé en pivotement dans une découpe correspondante des découpes (20), dans laquelle
les cliquets comportent un cliquet meneur (41) et au moins un cliquet suiveur (51),
caractérisé en ce que le cliquet suiveur (51) est formé avec une tige (56); et
un aiguillage (70) placé sur la tête (11) et réalisé avec au moins une rainure arquée
(72) pour recevoir et guider la tige (56) afin de déplacer le cliquet suiveur (51)
entre un premier mode d'engrènement avec la roue dentée (30) et un second mode à distance
de la roue dentée (30),
dans laquelle les découpes (20) sont décentrées les unes par rapport aux autres d'un
angle de 360° x (M + 1/L) ÷ N,
dans laquelle L est un nombre entier pour représenter le nombre des découpes (20),
M est tout nombre entier approprié, et N est un nombre entier pour représenter le
nombre des dents (31).
2. Clé unidirectionnelle multimode selon la revendication 1, dans laquelle la tige (56)
est mobile le long de la rainure arquée (72) lorsque le cliquet suiveur (51) vibre
sur les dents (31) de la roue dentée (30) dans le second mode.
3. Clé unidirectionnelle multi-mode selon la revendication 1, comportant des ressorts
(45, 55) placés chacun dans une découpe correspondante des découpes (20) pour décentrer
le cliquet (41, 51) correspondant vers la roue dentée (30).
4. Clé unidirectionnelle multimode selon la revendication 1, dans laquelle chacune des
découpes (20) comporte une sous-découpe (24) réalisée dans une paroi de celles-ci
dans laquelle chacun des cliquets (41, 51) comporte un axe (42, 52) inséré dans la
sous-découpe (24) de la découpe (20) correspondante.
5. Clé unidirectionnelle multimode selon la revendication 4, dans laquelle chacune des
découpes (20) comporte un plancher (25) et un alésage (26) réalisé dans le plancher,
dans laquelle l'axe (42, 52) de chacun des cliquets (41, 51) comporte une extrémité
réduite insérée dans l'alésage (26) de la découpe (20) correspondante.
6. Clé unidirectionnelle multimode selon la revendication 4, dans laquelle chacune des
découpes (20) comporte une face verticale (23) s'étendant près de la sous-découpe
(24), dans laquelle la face verticale (26) pousse une clavette (43) du cliquet correspondant
qui à son tour pousse une dent de la roue dentée (30).
7. Clé unidirectionnelle multimode selon la revendication 4, dans laquelle chacun des
cliquets (41, 51) comporte une clavette (43, 53) s'étendant depuis l'axe (42, 52)
dans une direction axiale, dans laquelle la clavette (43, 53) est adaptée pour un
engrènement avec les dents (31) de la roue dentée (30).
8. Clé unidirectionnelle multimode selon la revendication 7, dans laquelle la tige (56)
s'étend depuis la clavette (53) du cliquet suiveur (51).
9. Clé unidirectionnelle multimode selon la revendication 1, dans laquelle l'aiguillage
(70) est raccordé en pivotement à la tête (11).
10. Clé unidirectionnelle multimode selon la revendication 1, comportant un couvercle
(61) raccordé à la tête (11) pour garder la roue dentée (30) dans la tête et l'aiguillage
(70) sur la tête.
11. Clé unidirectionnelle multimode selon la revendication 10, dans laquelle le couvercle
(61) est placé entre la tête (11) et l'aiguillage (70).
12. Clé unidirectionnelle multimode selon la revendication 11, dans laquelle le couvercle
(61) comporte une ouverture (63) via laquelle la tige (56) s'étend dans la gorge arquée
(72).
13. Clé unidirectionnelle multimode selon la revendication 1, comportant un manche (12)
s'étendant depuis la tête (11).
REFERENCES CITED IN THE DESCRIPTION
This list of references cited by the applicant is for the reader's convenience only.
It does not form part of the European patent document. Even though great care has
been taken in compiling the references, errors or omissions cannot be excluded and
the EPO disclaims all liability in this regard.
Patent documents cited in the description