KR20100032505A

KR20100032505A - Two-way clutch

Info

Publication number: KR20100032505A
Application number: KR1020080091420A
Authority: KR
Inventors: 변동환
Original assignee: 변동환
Priority date: 2008-09-18
Filing date: 2008-09-18
Publication date: 2010-03-26

Abstract

PURPOSE: A bidirectional clutch is provided to facilitate changing torque transferring methods during rotation or stopping by including an input rotary member, an output rotary member, and a coupling controller. CONSTITUTION: A bidirectional clutch comprises an input rotary member(1), an output rotary member(2), and a coupling controller(4). The input rotary member is rotated by a driving source. Axial grooves are formed on the inner circumference of the output rotary member. The output rotary member transfers torque transferred from the input rotary member to the outside. The coupling controller controls the circulation of a torque transferring member. When positioned on joint parts, the torque transferring member bidirectionally transfers torque.

Description

Two Way Clutch {TWO-WAY CLUTCH}

The present invention relates to a two-way clutch, it is possible to select the rotational force transmission direction to transmit and separate the bidirectional rotational force in both directions, and to transmit the rotational force in either direction and separated in the rotation in the other direction, easy to change A ratchet type bidirectional clutch.

Conventionally, a one-way clutch using a sprag is mainly used as a device for switching the possible direction of power transmission. The one-way clutch is capable of transmitting power in one direction and power in the opposite direction. The transmission is made impossible, that is, the possible direction of power transmission is fixed to one. More recent compact devices, such as transmissions and the like, require the use of a two-way clutch that exceeds the function of the one-way clutch as described above.

The bidirectional clutch has two functional one-way clutches in opposite directions so that only one of them can function when necessary, that is, the possible direction of power transmission can be changed in the opposite direction. The approximate structure creates a pocket between the two rotors, inserts two power transmission members into the pocket, and inserts an elastic member between the power transmission members to press the power transmission members into contact with the two rotors in the pockets, respectively. It is common to control the power transmission member of the two rotors in contact at the same time. In addition, the bidirectional clutch further has one of the functions of combining in both directions and transmitting power in both directions, and freely rotating in both directions. However, it is not possible to select the separation and the combination by simple operation because it has the function of combining in both directions and the function of separating in both directions.

The present invention has been devised with reference to the above-mentioned matters, and it is possible to transmit and separate bidirectional rotational force in both directions, and to select a rotational force transmission direction that transmits rotational force in one direction and is separated from rotation in the other direction. It is an object to provide a ratchet type bidirectional clutch.

Moreover, an object of this invention is to provide the ratchet type bidirectional clutch which is easy to change a rotational force transmission system also during rotation or stop.

The object of the present invention and the input rotation member is driven to rotate by the drive source; An output rotating member having a plurality of axial grooves on an inner circumferential surface and transmitting the rotating force transmitted from the input rotating member to the outside; Supported by the input rotating member, rotates between a radially separated position away from the inner circumferential surface of the output rotating member and a coupling position engaged with the groove of the output rotating member, and coupled to one rotation of the input rotating member; Maintains the rotational force transmission members rotating in the opposite direction rotation from the engagement position to the release position in pairs to maintain the engagement position in the opposite rotational direction; It is achieved to have a coupling control mechanism for adjusting the rotation of the rotational force transmission member.

With this configuration, by operating the coupling control mechanism, the rotational force transmitting member transmits rotational force in both directions when all of the rotational force transmission members are in the engaged position, and transmits rotational force in one direction when only one of them is in the engaged position, and the rotational force in the opposite direction is It is possible to provide a bidirectional clutch which does not transmit and rotates freely in one direction and allows the output rotational member to freely rotate in both directions when both are in the disengaged position.

In particular, the input rotation member is formed with an axial hole, a radial hole penetrating the axial hole and an outer circumferential surface, and an axial groove for rotationally supporting the rotation force transmitting member. In addition, the coupling control mechanism is preferably inserted into the axial hole has a cam surface of which a portion of the main surface changes in the radial direction as the relative rotation or axial movement.

A surface for guiding the rotational force transmission member to the engagement position when the rotational control mechanism is inserted into the axial hole to rotate relative to the rotational cam at the support point of the rotational force transmission member toward the end engaging with the output rotational member; It is preferable that the inclination is steep and the surface leading to the disengaged position has a cam surface with a gentle inclination.

In general, the cam operating surface is configured smoothly. However, when a plurality of two-way clutches are controlled by one coupling control mechanism and operate individually, the cam operating surface needs to be finely divided in order for each clutch to operate without interference. It is useful to adjust the inclination of the cam operating surface when narrowly configuring the cam operating groove. In particular, it is possible to simultaneously control the rotational force transmission members disposed in opposite directions to each other.

In addition, when the engagement control mechanism is inserted into the axial hole and moves in the axial direction, it is preferable that the concave groove has a cam surface which is inclined in the axial direction. This structure is applied in the case of changing the engagement state of the clutch while the central axis rotates, and the actuator is preferably a hydraulic or pneumatic actuator.

The clutch is generally rotated by the input rotation member, but the configuration in which the input rotation member is fixed without rotation can be seen to be applied to a planetary gearbox that controls shifting by coupling or separating a sun gear to a fixed central axis. In this case, the coupling control mechanism may control the cam surface in the rotational direction with a shift knob or a shift wire.

The axial groove formed on the inner circumferential surface of the output rotating member has a pair of sidewalls each having a sidewall having a radius suitable for the rotational force transmission member to rotate and a sidewall having a sidewall having a radius suitable for the rotational force transmission member to rotate. It is possible to be arranged as. Further, when the rotational force transmission member is in the engaged position, one of the inner circumferential surface projections of the output rotational member is disposed on the outer circumferential surface of the pivot shaft of the rotational force transmission member to prevent the rotational force transmission member from being separated from the input rotational member. desirable.

In addition, the rotational force transmission member is a rotating shaft which is supported in the axial groove of the input rotating member and a cam contact portion protruding from the rotation shaft to contact the cam surface of the coupling control mechanism, and protrudes in the opposite direction to the cam contact portion and outputs Two-way clutch characterized in that it has a brake portion engaged with the groove of the rotating member or immersed in the through hole

The rotational force transmitting member protrudes to both sides and forms a rotational shaft supported by the axial groove of the input rotating member; Preferably, the cam contact portion is formed to be biased with respect to the braking portion, and the cam surface of the rotary cam corresponding thereto is also shifted in the axial direction, so that the cam surface facing one of the rotational force transmission members is formed by the other rotational force transmission member. It is desirable to be configured so as not to affect operation.

In such a configuration, two rows of cam faces can be formed in the width of the braking section in which the clutch unit operates, so that the rotational force transmission members arranged in pairs can be coupled or separated at the same time or differently.

In addition, the elastic member is arranged to always press toward the groove of the output rotation member so that the rotational force transmission member in the engaging position. It is preferable that a part of the protrusion constituting the rotation shaft is inclined and pressed to the elastic member. The form is preferably a ring-shaped spring ring, a retainer spring or a rubber ring.

Accordingly, the bidirectional clutch of the present invention can select 1) a bidirectional combined state in which rotational force is transmitted in both directions, 2) a bidirectional separated state freely rotating in both directions, and 3) a clockwise one-way clutch state and 4) a counterclockwise one-way clutch state. It is effective to provide a four-mode bidirectional clutch.

In addition, the bidirectional clutch of the present invention is easy to change the rotational force transmission method during rotation or stop, there is an effect of providing a bidirectional clutch that operates smoothly when changing the selection.

The terms or words used in this specification and claims are not to be construed as limiting in their usual or dictionary meanings, and the inventors may appropriately define the concept of terms in order to best describe their invention. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Although the present invention has been shown and described with reference to the preferred embodiments as described above, it is not limited to the above embodiments and those skilled in the art without departing from the spirit of the present invention. Various modifications and variations are possible without departing from the spirit and scope of the present invention and the appended claims.

1 is a cross-sectional view showing an embodiment of a bidirectional clutch according to the present invention, the output rotating member is in a free rotation state in both directions.

Figure 2 is a cross-sectional view showing an embodiment of the bidirectional clutch according to the present invention, the rotational force transmission member is protruding to couple the output rotation member in both directions, the rotational force is in a state that is transmitted in both directions.

3 shows that the retainer spring pressurizes the rotational shaft projection of the rotational force transmission member in the state shown in FIG. 1.

Figure 4 shows a state in which the rotational force transmission member is rotated by the retainer spring in the state of Figure 2 coupled with the output rotation member.

5 is a perspective view showing an input rotating member of an embodiment of a bidirectional clutch according to the present invention.

Figure 6 is a perspective view showing a coupling control mechanism of an embodiment of a bidirectional clutch according to the present invention.

7 is a perspective view showing a rotational force transmitting member of one embodiment of a bidirectional clutch according to the present invention.

Figure 8 is a cross-sectional view showing another embodiment of the bidirectional clutch according to the present invention, the output rotating member is in a free rotation state in both directions.

Figure 9 is a cross-sectional view showing another embodiment of the bidirectional clutch according to the present invention, showing that the cam surface of the coupling control mechanism is configured to engage one rotation force transmission member.

10 is a cross-sectional view showing yet another embodiment of the bidirectional clutch according to the present invention, in which the cam surface of the coupling control mechanism rotates to protrude the rotational force transmission member in both directions, thereby coupling the output rotation member in both directions. The rotational force is in a state of being transmitted in both directions.

1: Input rotating member 1a: Axial through hole of the input rotating member

1b: radial through hole of input rotating member

1c: Axial groove of the input rotating member

1d: Retainer spring groove of input rotating member

2: output rotating member

2a, 2b: side wall of the axial groove of the output rotating member

3: rotational force transmission member 3a: cam contact portion of the rotational force transmission member

3b: Braking part of rotational force transmission member 3c: Rotating shaft of rotational force transmission member

4: Combined control mechanism 4a, 4b, 4c, 4d, 4e: Cam surface of coupled control mechanism

4f: shift handle coupling part

4Ⅰ, 4Ⅱ: A track in which the cam contact portion of the torque transmitting member contacts the cam surface

5: elastic member

Claims

An input rotating member driven to rotate by a drive source; An output rotating member having a plurality of axial grooves on an inner circumferential surface and transmitting the rotating force transmitted from the input rotating member to the outside; Supported by the input rotating member, rotates between a radially separated position away from the inner circumferential surface of the output rotating member and a coupling position engaged with the groove of the output rotating member, and coupled to one rotation of the input rotating member; Maintains the rotational force transmission members rotating in the opposite direction rotation from the engagement position to the release position in pairs to maintain the engagement position in the opposite rotational direction; It has a coupling control mechanism for adjusting the rotation of the rotational force transmission member,

By the operation of the coupling control mechanism, the rotational force transmitting member transmits the rotational force in both directions when all the rotational force transmitting members are in the engaged position, and transmits the rotational force in one direction when only one is in the engaged position, and does not transmit the rotational force in the opposite direction. And the one direction rotates freely and permits the output rotation member to rotate freely in both directions when both are in the disengaged position.

The rotation control apparatus of claim 1, wherein the input rotation member has an axial hole, a radial hole penetrating the axial hole and an outer circumferential surface, and an axial groove for rotationally supporting the rotation force transmitting member. A bidirectional clutch characterized in that a part of the main surface has a cam surface that changes in height in a radial direction as it is inserted into the axial hole and rotates relative to or moves in the axial direction.

3. The engagement control mechanism according to claim 2, wherein the engagement control mechanism is inserted into the axial hole to rotate relatively, and engages the rotational force transmission member when the rotating cam surface rotates toward the end engaging with the output rotational member at the support point of the rotational force transmission member. The surface guiding to the position is inclined steeply, and the surface guiding to the disengaged position has a cam surface with a gentle inclination

The bidirectional clutch according to claim 2, wherein the engagement control mechanism has a cam surface inserted into the axial hole to move in the axial direction, and the concave groove is inclined in the axial direction.

The bidirectional clutch according to claim 2, wherein the controlling of the engagement control mechanism to rotate relative to or move in the axial direction is a hydraulic or pneumatic actuator.

The bidirectional clutch according to claim 2, wherein the input rotating member is fixed so as not to rotate.

The bidirectional clutch according to claim 6, wherein the coupling control mechanism further comprises a shift knob or a shift wire for controlling the cam surface in a rotational direction.

The axial groove formed on the inner peripheral surface of the output rotating member,

A bidirectional clutch characterized in that both sides have sidewalls having a radius suitable for the rotational force transmission member to rotate;

The bidirectional clutch characterized in that the groove having a side wall having a side radius having a radius suitable for the rotational force transmission member is arranged in pairs

10. The method of claim 8 or 9, wherein the output rotation member is configured such that when the rotational force transmission member is in the engaged position, one of the inner circumferential surface projections of the output rotational member is located on the rotational shaft outer circumferential surface of the rotational force transmission member Bidirectional clutch, characterized in that to prevent the rotational force transmission member from being separated from the input rotation member

3. The rotational force transmitting member according to claim 2, wherein the rotational force transmitting member has a rotational shaft supported by the axial groove of the input rotational member, a cam contact projecting from the rotational shaft to contact the cam surface of the coupling control mechanism, and a direction opposite to the cam contacting portion. Bidirectional clutch protruding to have a braking portion engaged with the groove of the output rotating member or immersed in the through hole;

12. The method of claim 11, wherein the rotational force transmitting member protrudes to both sides and forming a rotating shaft which is supported in the axial groove of the input rotating member; A bidirectional clutch characterized by having a cam contact portion formed to be biased with respect to the braking portion.

12. The cam contacting portion of the rotating force transmitting member is eccentrically formed in an axial direction, and the cam surface of the rotating cam corresponding to the rotating cam is also axially shifted so that the cam surface facing one rotating force transmitting member is opposite to the other. Bidirectional clutch, characterized in that configured not to affect the operation of the torque transmission member

The bidirectional clutch according to claim 2, further comprising an elastic member which always presses the rotational force transmitting member to be in the engaged position.

15. The method of claim 13, wherein the rotational force transmission member has a projection forming a rotating shaft is formed to be pressed to the elastic member so that a portion of the projection is inclined so that one side of the rotational force transmission member is always in contact with the cam surface of the coupling control mechanism. Featured two way clutch

The bidirectional clutch according to claim 15, wherein the elastic member is a ring-shaped spring ring, a retainer spring or a rubber ring.