BACKGROUND OF THE INVENTION
[0001] The present invention relates generally to a continuously adjustable rotation device,
and more particularly to a rotation device that is easy to assemble and can perform
precise rotational movements, thereby improving the rotational alignment and lowering
the manufacturing cost thereof. The continuously adjustable rotation device of the
present invention is applicable to many products that require the performance of rotational
motions.
[0002] Rotational mechanism is normally applied to products that perform single directional
or double directional rotations. For example, the rotational mechanism is commonly
seen in a ratchet wrench, a shaft for adjusting the illuminating angles of a lamp,
a positioning shaft for adjusting the angle formed between a seat and a seat back,
etc. Some conventional rotational mechanisms employ a ratchet wheel or a ratchet to
incorporate with a positioning element. Other rotational mechanisms employ the incorporation
between a concave portion and a protrusive point, or the incorporation between an
elastic element and steel balls, so as to obtain a single directional or a double
directional rotational operation and positioning. However, these rotational mechanisms
are restricted to sectional positioning. In other words, only at certain rotational
angles can the rotational mechanism be securely positioned. One can not continuously
adjust the rotational motion and position the rotational mechanism at any desirable
rotated angle.
[0003] One possible solution to the aforementioned drawbacks is disclosed in the Published
Taiwanese New Utility Model Patent No. 527989, entitled "Continuously Adjustable Ratchet Wrench." In this conventional art, the
continuously adjustable ratchet wrench includes a slanted continuously adjustable
disc base disposed at the bottom portion of a wrench body. The slanted frictional
surface faces upward, which contacts a continuously adjustable rotational mechanism
for transmission of force. The continuously adjustable rotational mechanism includes
a spherical disc, a slanted continuously adjustable disc, and a combining shaft. The
combining shaft is thrust into the spherical disc and the slanted continuously adjustable
disc, and is combined with the slanted continuously adjustable disc base. Further,
a C-shaped buckle and a pushing rod mechanism are employed to select the rotation
direction and to control the rotation. When one rotates the combining shaft to an
angle, the spherical disc, the slanted continuously adjustable disc and the slanted
continuously adjustable disc base perform frictional rotational motion with the combining
shaft along the contact surface. In addition, the pushing rod and the elastic element
of pushing rod mechanism are pushed to move backward in response to the compression
of the slanted continuously adjustable disc. Furthermore, the pushing rod of the pushing
rod mechanism is pushed outward due to the elastic force from the elastic element
after the combining shaft is rotated to a certain angle, thereby tightly pushing the
slanted continuously adjustable disc to securely position the rotated angle.
[0004] However, the fabrication of the slanted continuously adjustable disc base and the
slanted continuously adjustable rotational mechanism requires the use of high precision
equipment and highly accurate alignment assembly process. Therefore, the yield of
manufacturing is significantly lower than expected and the cost thereof is much higher.
Moreover, the rotational operation can not guarantee that the slanted surfaces are
properly contacted with each other.
BRIEF SUMMARY OF THE INVENTION
[0005] The present invention is to provide a continuously adjustable rotation device, which
is structurally simple and easy to assemble, thereby enhancing the transmission efficiency
without the need of a alignment process during fabrication.
[0006] In order to achieve the above and other objectives, the continuously adjustable rotation
device includes a base, a first connection element combined with the base, a ring
buckle, a transmission disc, a second connection element, and a rotation controller.
The base includes a chamber, one end of which having a contacting portion. The first
connection element is disposed in the chamber. The first connection element include
a driven portion and a first connection end. A ring buckle is connected to the first
connection element. The rotation controller contacts the outer surface of the first
connection element. The rotation controller includes at least a rotation direction
driving portion and an activation switch. The rotation direction driving portion sets
the direction of rotation and contacts the transmission disc. The activation switch
can change and activate the direction of rotation, thereby making at least a rotation
direction driving portion to contact the transmission disc. The second connection
element includes a driving piece connected to and driven by the driven portion of
the first connection element. The transmission disc is disposed in the chamber and
harnessed on the driven portion of the first connection element. The transmission
disc forms an inclined angle relative to the contacting portion. One end surface of
the transmission disc contacts one of the rotation direction driving portions of the
rotation controller.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007]
FIG. 1 is a perspective view of a continuously adjustable rotation device, in accordance
with one embodiment of the present invention.
FIG. 2 is an explosive view of the continuously adjustable rotation device, in accordance
with one embodiment of the present invention.
FIG. 3 illustrates the operational relation of the continuously adjustable rotation
device being rotated along the first rotational direction, in accordance with one
embodiment of the present invention.
FIG. 4 illustrates the structural relation of the continuously adjustable rotation
device being rotated along the first rotational direction, in accordance with one
embodiment of the present invention.
FIG. 5 illustrates the operational relation of the continuously adjustable rotation
device being rotated along the second rotational direction, in accordance with one
embodiment of the present invention.
FIG. 6 illustrates the structural relation of the continuously adjustable rotation
device being rotated along the second rotational direction, in accordance with one
embodiment of the present invention.
FIG. 7 is a sectional view of the continuously adjustable rotation device, in accordance
with one embodiment of the present invention.
FIG. 8 is a sectional view of the continuously adjustable rotation device, in accordance
with another embodiment of the present invention.
FIG. 9 illustrates the continuously adjustable rotation device of the present invention
used in a wrench.
FIG. 10 illustrates the continuously adjustable rotation device of the present invention
used in a rotation shaft of an adjustable lamp rod.
FIG. 11 illustrates the continuously adjustable rotation device of the present invention
used in a rotation shaft between a seat and a seat back.
FIG. 12 is a partially enlarged view illustrating the continuously adjustable rotation
device of the present invention used in a rotation shaft between a seat and a seat
back.
FIG. 13 is an explosive view of the continuously adjustable rotation device, in accordance
with yet another embodiment of the present invention.
FIG. 14 is a sectional view of the continuously adjustable rotation device, in accordance
with yet another embodiment of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
[0008] In order to better understanding the features and technical contents of the present
invention, the present invention is hereinafter described in detail by incorporating
with the accompanying drawings. However, the accompanying drawings are only for the
convenience of illustration and description, no limitation is intended thereto.
[0009] Referring to FIG. 1 to FIG. 7, a continuously adjustable rotation device of the present
invention is illustrated. As shown, the continuously adjustable rotation device of
the present invention includes a base 1, and a first connection element 2 connected
with the base, a ring buckle 20, a transmission disc 5, a second connection element
6, and a rotation controller 3. The assembly of the aforementioned elements form a
continuously adjustable rotation device of the present invention, which does not require
any alignment process for the slanted surfaces, and is advantageous in its high yield
and its low cost.
[0010] The base 1 includes a chamber 11 enclosed by a cover 12. The base 1 includes a hole
13 formed on the wall of the base 1. A rod is disposed in the hole 13, forming a protrusive
contacting portion 14. The base 1 is one part of, or can be connected with, the structural
body of all types of rotational operable product.
[0011] The rod can be a cylindrical rod, or a cylindrical rod having an axial directional
flat surface. One of the flat surface or the slanted surface contacts the transmission
disc to form a inclined arrangement.
[0012] The first connection element 2 includes a driven portion 21 and a first connection
end. The driven portion 21 includes a connection trench 23 vertically formed thereon
for combining with the ring buckle 20, the transmission disc 5, and the second connection
element 6, so as to simultaneously rotate along the driven direction.
[0013] The ring buckle 20 includes at least a protrusive piece 24 formed in the inner side
of the ring buckle 20. The protrusive piece 24 is harnessed on the driven portion
21 and the connection trench 23, thereby combining the ring buckle 20 with the first
connection element 2 and supporting the rotational controller 3 for changing the rotational
direction. The ring buckle 20 can further be integrated between the driven portion
21 of the first connection element 2 and the first connection end 22.
[0014] The rotation controller 3 is disposed around the edge of the driven portion 21, which
is composed of a first rotation direction driving portion 31, a second rotation direction
driving portion 32 and an activation switch 4. The first rotation direction driving
portion 31 and the second rotation direction driving portion 32 both include an activation
groove 33, 33'. By switching the activation switch 4 between the two activation grooves
33, 33', one can select the rotation direction. One of the rotation direction driving
portion 31, 32 is switched to contact the transmission disc 5 and the second connection
element, thereby specifying the direction of rotation.
[0015] The first rotation direction driving portion 31 and the second rotation direction
driving portion 32 can be manufactured independently, as shown in FIG. 2, or manufactured
together. Of course, one of the first rotation direction driving portion 31 and the
second rotation direction driving portion 32 can be designed to constantly contact
the transmission disc 5.
[0016] A block piece 51 is formed and extended inward from the edge of the transmission
disc 5 for harnessing the transmission disc 5 onto the driven portion 21 and the connection
trench 23. The ring buckle 20 is then connected to the first connection element 2.
Meanwhile, one end of the transmission disc 5 contacts the contacting portion 14 of
the base 1 and the second connection element 6, such that no alignment is required
when assembling the rotation device. In addition, the contacting portion 14 can also
incline the transmission disc 5 to form an angle, thereby allowing the transmission
disc 5 and the rotation controller 3 to contact and drive one of the two rotation
direction driving portions 31, 32, as shown in FIG. 7. The selection of rotational
direction and the driving relation are thus formed. In this manner, no alignment is
needed when assembling the rotation device, which can significantly increase the yield
and lower the manufacturing cost.
[0017] The second connection element 6 includes a circular base 61 and a second connection
portion 62 that can be extended outside of the cover 12. One end surface of the circular
base 61 contacts the slanted transmission disc 5 and the contacting portion 14. In
addition, a driving piece 63 is formed on the circular base 61, so as to connect with
the first connection element 2 when assembled in the connection trench 23.
[0018] Referring to FIG. 3 to FIG. 6, the operation of the continuously adjustable rotation
device of the present invention is illustrated. As shown in FIG. 3, the first rotation
direction driving portion 31 of the rotation controller 3 contacts the slanted transmission
disc 5, when the activation switch 4 is set to the first rotation direction and locked
in the activation groove 33 of the first rotation direction driving portion 31. Meanwhile,
as shown in FIG. 4, the second rotation direction driving portion 32 does not contact
the transmission disc 5. In addition, the transmission disc 5 still contacts the contacting
portion 14, the end surface of the circular base 61 of the second connection element
6. When rotating the rotation device of the present invention along the first rotation
direction, the second connection element 6, the first rotation direction driving portion
31 and the transmission disc 5 will rotate simultaneously. At the same time, the combination
of the driving piece 63 of the second connection element, the block piece 51 of the
transmission disc 5 and the driven portion of the first connection element 2 will
drive the second connection element 2 to rotate along the same direction simultaneously.
[0019] As shown in FIG. 5, when the activation switch 4 is turned to the second rotation
direction, and locked in the activation groove 33' of the second rotation direction
driving portion 32, the rotation controller 3 will be set to the second rotation direction
driving portion 32, contacting the slanted transmission disc 5. Meanwhile, the first
rotation direction driving portion 31 does not contact the transmission disc 5, as
shown in FIG. 6. In this manner, the rotational operation along the second rotation
direction will enable the second connection element 6 to rotate along the second rotation
direction simultaneously with the transmission disc 5 and the first connection element
2.
[0020] Referring to FIG. 8, a continuously adjustable rotation device in accordance with
another embodiment of the present invention is illustrated. As shown, this particular
embodiment is similar to that shown in FIG. 1 to FIG. 7. However, the difference is
in that the contacting portion 14 is integrated with the protrusive portion on the
inner surface of the chamber of the base 1. The contacting portion 14 in this particular
embodiment includes at least a flat surface, which contacts the transmission disc
5 and the second connection element 6, thereby allowing the transmission disc 5 to
form a fixed slanted angle. The transmission disc 5 can thus be operated with the
rotation controller 3.
[0021] The continuously adjustable rotation device of the present invention is applicable
to a wrench, as shown in FIG. 9, or to the rotation shaft of an adjustable lamp rod,
as shown in FIG. 10. In addition, the continuously adjustable rotation device of the
present invention is also applicable to the rotation shaft between a seat and a seat
back, as shown in FIG. 11 and FIG. 12. The first connection end 22 of the first connection
element 2 and the second connection portion 62 of the second connection element 6
(or the first connection element 2 and the second connection element 6) can be connected
to a fixed end and a mobile end of the aforementioned products, such that a continuously
adjustable rotation operation can be performed by driving the driving piece 63 of
the second connection element 6 and the block piece 51 of the transmission disc 5,
and the first connection element 2 relative to the driven portion 21 along the rotation
direction selected by the rotation controller 6 via the mutually contacted the second
connection element 6, the transmission disc 5 and the contacting portion 14.
[0022] Referring again to FIG. 13 and FIG. 14, a continuously adjustable rotation device
in accordance with yet another embodiment of the present invention is illustrated.
As shown, this particular embodiment is similar to that shown in FIG. 1 and FIG. 2.
The difference is in that a pad 8 is further disposed between the transmission disc
5 and the contacting portion 14. The pad 8 is disposed on the transmission disc 5,
and includes two slanted surfaces 81, 82 with two opposite inclination angles. Alternatively,
the pad 8 can has only one slanted surface contacting the flat surface of the contacting
portion 14. In this manner, the angle of the contacting portion 14 becomes larger.
As a result, a larger release space is obtained. Therefore, only a small movement
will release the contact between the slanted surfaces 81, 82 and the contacting portion
14.
[0023] Since, any person having ordinary skill in the art may readily find various equivalent
alterations or modifications in light of the features as disclosed above, it is appreciated
that the scope of the present invention is defined in the following claims. Therefore,
all such equivalent alterations or modifications without departing from the subject
matter as set forth in the following claims is considered within the spirit and scope
of the present invention.
1. A continuously adjustable rotation device, comprising:
a base 1 including a chamber 11, one end of which including a contacting portion 14;
a first connection element 2 disposed in the chamber, the first connection element
2 including a ring buckle 20 connected between a driven portion and a first connection
end;
a rotation controller 3 situated in the chamber 11 and disposed above the ring buckle
20 corresponding to the driven portion of the first connection element 2, the rotation
controller 3 including at least a rotation direction driving portion;
a transmission disc 5 disposed in the chamber 11 and harnessed on the driven portion
of the first connection element 2, which forms an inclined angle relative to the contacting
portion 14, one end surface of the transmission disc 5 contacting one of the rotation
direction driving portions of the rotation controller 3.
2. The rotation device as recited in claim 1, wherein the base 1 comprises a hole 13
penetrating the chamber 11, the hole 13 having a rod disposed therein for forming
a contacting portion 14 and making the transmission disc 5 to form an inclined angle.
3. The rotation device as recited in claim 2, wherein the rod is a cylindrical rod.
4. The rotation device as recited in claim 3, wherein the cylindrical rod comprises a
axial directional flat surface for contacting the transmission disc 5 and forming
an inclination angle.
5. The rotation device as recited in claim 1, wherein a ring buckle 20 is integrated
with the driven portion 21 of the first connection element 2 and the first connection
end 22, the driving portion further comprising a connection trench 23; and the ring
buckle 20 further comprises a protrusive piece 24, the transmission disc 5 comprises
a block piece 51, and the second connection element 6 comprises driving piece 63,
the protrusive piece 24, the block piece 51, and the driving piece 63 being retained
in the connection trench 23 of the driven portion 21.
6. The rotation device as recited in claim 1, wherein the ring buckle 20 is harnessed
to the driven portion 21 of the first connection element 2, the driven portion 21
having a connection trench 23 formed thereon; and the ring buckle 20 further comprises
a protrusive piece 24, the transmission disc 5 comprises a block piece 51, and the
second connection element 6 comprises driving piece 63, the protrusive piece 24, the
block piece 51, and the driving piece 63 being retained in the connection trench 23
of the driven portion 21.
7. The rotation device as recited in claim 1, wherein the ring buckle 20 is integrated
between the driven portion 21 of the second connection element 6 and the first connection
end 22.
8. The rotation device as recited in claim 1, wherein the rotation controller 3 further
comprises:
a first rotation direction driving portion 31 of the first rotation direction, one
end of which having an activating portion formed thereon;
a second rotation direction driving portion 32 of the second rotation direction, one
end of which having an activating portion formed thereon;
a activation switch 4 formed relative to the activation groove 33, 33' of the first
rotation direction driving portion 31 and the second rotation direction driving portion
32 for switching the direction of rotation.
9. The rotation device as recited in claim 8, wherein the first rotation direction driving
portion 31 and the second rotation direction driving portion 32 are manufactured independently
or integrated together.
10. The rotation device as recited in claim 1, wherein the rotation controller 3 further
comprises a rotation driving portion contacting the transmission disc 5, thereby performing
a single directional rotational operation.
11. The rotation device as recited in claim 1, wherein the contacting portion 14 is directly
formed in the chamber 11 of the base 1 for contacting the transmission disc 5 for
forming an inclined angle.
12. The rotation device as recited in claim 11, wherein the contacting portion 14 comprises
a slanted surface 81, 82 for contacting the transmission disc 5.
13. The rotation device as recited in claim 1, further comprising a second connection
element 6 disposed in the chamber 11 relative to the driven portion 21 of the first
connection element 2.
14. A continuously adjustable rotation device, comprising:
a base 1 including a chamber 11, one end of which including a contacting portion 14;
a first connection element 2 disposed in the chamber 11, the first connection element
2 including a ring buckle 20 connected between a driven portion 21 and a first connection
end 22;
a pad 8 contained in the chamber 11, which is disposed above the transmission disc
5 and includes at least a slanted surface for contacting the contacting portion 14;
a rotation controller 3 situated in the chamber 11 and disposed above the ring buckle
20 corresponding to the driven portion 21 of the first connection element 2, the rotation
controller 3 including at least a rotation direction driving portion;
a transmission disc 5 disposed in the chamber 11 and harnessed on the driven portion
21 of the first connection element 2, which forms an inclined angle relative to the
contacting portion 14, one end surface of the transmission disc 5 contacting one of
the rotation direction driving portions 31, 32 of the rotation controller 3.
15. The rotation device as recited in claim 14, wherein the pad 8 includes two slanted
surface 81, 82 with two opposite inclination angles.
16. The rotation device as recited in claim 14, further comprising a second connection
element 6 disposed in the chamber 11 relative to the driven portion 21 of the first
connection element 2.
Amended claims in accordance with Rule 86(2) EPC.
1. A continuously adjustable rotation device, comprising:
- a base (1) including a chamber (11), one end of which including a contacting portion
(14);
- a first connection element (2) disposed in the chamber, the first connection element
(2) including a ring buckle (20) connected between a driven portion (21) and a first
connection end;
- a rotation controller (3) situated in the chamber (11) and disposed above the ring
buckle (20) corresponding to the driven portion (21) of the first connection element
(2), the rotation controller (3) including a first and a second rotation direction
driving portion (31, 32);
- a transmission disc (5) disposed in the chamber (11) and harnessed on the driven
portion (21) of the first connection element (2), which forms an inclined angle relative
to the contacting portion (14), one end surface of the transmission disc (5) contacting
one of the rotation direction driving portions (31, 32) of the rotation controller
(3),
- wherein the disc (5) is held in an inclined position in the chamber (11), with one
side surface of the disc (5) being in contact with the contacting member (14) at one
end of the disc (5) and the opposite side surface of the disc (5) being in contact
with one of the rotation direction driving portions (31, 32) of the rotation controller
(3) at the opposite end of the disc (5).
2. The rotation device as recited in claim 1,
wherein the base (1) comprises a hole (13) penetrating the chamber (11), the hole
(13) having a rod disposed therein for forming a contacting portion (14) and making
the transmission disc (5) to form a inclined angle.
3. The rotation device as recited in claim 2,
wherein the rod is a cylindrical rod.
4. The rotation device as recited in claim 3,
wherein the cylindrical rod comprises an axial directional flat surface for contacting
the transmission disc (5) and forming an inclination angle.
5. The rotation device as recited in claim 1,
wherein a ring buckle (20) is integrated with the driven portion (21) of the first
connection element (2) and the first connection end (22), the driving portion further
comprising a connection trench (23); and the ring buckle (20) further comprises a
protrusive piece (24), the transmission disc (5) comprises a block piece (51), and
the second connection element (6) comprises driving piece (63), the protrusive piece
(24), the block piece (51), and the driving piece (63) being retained in the connection
trench (23) of the driven portion.
6. The rotation device as recited in claim 1,
wherein the ring buckle (20) is harnessed to the driven portion (21) of the first
connection element (2), the driven portion (21) having a connection trench (23) formed
thereon; and the ring buckle (20) further comprises a protrusive piece (24), the transmission
disc (5) comprises a block piece (51), and the second connection element (6) comprises
driving piece (63), the protrusive piece (24), the block piece (51), and the driving
piece (63) being retained in the connection trench (23) of the driven portion (21).
7. The rotation device as recited in claim 1,
wherein the ring buckle (20) is integrated between the driven portion (21) of the
second connection element (6) and the first connection end (22).
8. The rotation device as recited in claim 1,
wherein the rotation controller (3) further comprises:
- a first rotation direction driving portion (31) of the first rotation direction,
one end of which having an activating portion formed thereon;
- a second rotation direction driving portion (32) of the second rotation direction,
one end of which having an activating portion formed thereon;
- an activation switch (4) formed relative to the activation groove (33, 33') of the
first rotation direction driving portion (31) and the second rotation direction driving
portion (32) for switching the direction of rotation.
9. The rotation device as recited in claim 8,
wherein the first rotation direction driving portion (31) and the second rotation
direction driving portion (32) are manufactured independently or integrated together.
10. The rotation device as recited in claim 1,
wherein the rotation controller (3) further comprises a rotation driving portion contacting
the transmission disc (5), thereby performing a single directional rotational operation.
11. The rotation device as recited in claim 1,
wherein the contacting portion (14) is directly formed in the chamber (11) of the
base (1) for contacting the transmission disc (5) for forming an inclined angle.
12. The rotation device as recited in claim 11,
wherein the contacting portion (14) comprises a slanted surface (81, 82) for contacting
the transmission disc (5).
13. The rotation device as recited in claim 1,
further comprising a second connection element (6) disposed in the chamber (11) relative
to the driven portion (21) of the first connection element (2).
14. A continuously adjustable rotation device, comprising:
- a base (1) including a chamber (11), one end of which including a contacting portion
(14);
- a first connection element (2) disposed in the chamber (11), the first connection
element (2) including a ring buckle (20) connected between a driven portion (21) and
a first connection end (22);
- a pad (8) contained in the chamber (11), which is disposed above the transmission
disc (5) and includes at least a slanted surface for contacting the contacting portion
(14);
- a rotation controller (3) situated in the chamber (11) and disposed above the ring
buckle (20) corresponding to the driven portion (21) of the first connection element
(2), the rotation controller (3) including a first and a second rotation direction
driving portion (31, 32);
- a transmission disc (5) disposed in the chamber (11) and harnessed on the driven
portion (21) of the first connection element (2), which forms an inclined angle relative
to the contacting portion (14), one end surface of the transmission disc (5) contacting
one of the rotation direction driving portions (31, 32) of the rotation controller
(3),
wherein the disc (5) is held in an inclined position in the chamber (11), with one
side surface of the disc (5) being in contact with the pad (8) at one end of the disc
(5), the opposite side of the pad (8) contacting the contacting member (14) with its
at least one slanted surface (81, 82) and the opposite side surface of the disc (5)
being in contact with one of the rotation direction driving portions (31, 32) of the
rotation controller (3) at the opposite end of the disc (5).
15. The rotation device as recited in claim 14,
wherein the pad (8) includes two slanted surfaces (81, 82) with two opposite inclination
angles.
16. The rotation device as recited in claim 14, further comprising a second connection
element (6) disposed in the chamber (11) relative to the driven portion (21) of the
first connection element (2).