JP5993512B1 - Lock type two-way clutch using coil spring - Google Patents

Abstract

In a simple structure using a coil spring, rotation from an input shaft 2 is transmitted to an output shaft 3, but transmission of rotation from the output shaft 3 to the input shaft 2 makes the output shaft 3 unrotatable. To provide a new lock-type two-way clutch that is shut off. SOLUTION: A fixed shaft-like inner ring 4 and a coil spring 5 that is mounted in contact with the outer peripheral surface of the inner ring 4 and is formed by winding a wire rod are provided. At both ends of the coil spring 5 in the axial direction, hook portions 51 bent outward are formed at different positions in the circumferential direction. The input shaft 2 and the output shaft 3 are respectively formed with an input locking piece 22 and an output locking piece 32 having an arc cross section extending in the axial direction, and the input locking piece 22 and the output locking piece 32 are arranged in the circumferential direction. They are installed in combination so that there are two gaps 6. In each of the two gaps 6, hook portions 51 at both ends of the coil spring 5 are inserted, and the distance in the circumferential direction between the output locking piece 32 and the hook portion 51 is determined by the input locking piece 22 and the hook portion 51. Set larger than the distance in the circumferential direction. [Selection] Figure 1

Description

  The present invention relates to a clutch device that changes a power transmission state between an input shaft and an output shaft, and in particular, transmits power of normal / reverse rotation from the input shaft (drive side) and from the output shaft (driven side). This power transmission relates to a lock type two-way clutch using a coil spring that blocks the output shaft as being unrotatable.

  In a power transmission system that drives work equipment or the like from a drive source such as a motor, for example, an elevating device that moves an article up and down by a motor, when the article reaches a predetermined position, the article is automatically In some cases, an operation to maintain the position is required. For this reason, there is known a device that uses a lock-type bidirectional clutch having an input shaft and an output shaft to connect the input shaft to a motor that can rotate forward and reverse, and to move the article up and down by rotating the output shaft. . For example, the device described in Patent Document 1 relating to the inventor's idea is to function as a lock-type bidirectional clutch by utilizing the biting and releasing of the roller.

  The lock-type bidirectional clutch is applied to, for example, a lifting device for transferring a paper table on which a paper is placed or a lifting device for lifting a window blind of a building in a finisher of a copying machine. When this is used, automatic power transmission can be controlled by a simple device, and the use of electric power or the like is unnecessary, as in the case of electrical control by providing a brake mechanism, for example. When there is an unexpected reverse input from the output shaft side, the motor of the drive source can be protected.

  By the way, an apparatus for interrupting power transmission using a coil spring is also known. For example, a known torque limiter provided with a coil spring causes the shaft to idle and interrupts transmission of power when a torque greater than the frictional force of the coil spring wound around the shaft is applied. Moreover, as a clutch device using a coil spring, for example, a device described in Patent Document 2 related to the idea of the present applicant is known, and this will be described with reference to FIGS. 5 and 6. FIG. 5 is a diagram showing the overall structure of the clutch device, and FIG. 6 is a diagram showing a cross section thereof.

The clutch device of FIG. 5 includes a first housing 1H, a second housing 2H, an inner ring N, and a coil spring S. The first housing 1H and the second housing 2H are respectively formed with a first locking piece 1HS and a second locking piece 2HS each having an arcuate cross section extending in the axial direction, and the first locking piece 1HS and the second locking piece. 2HS is installed in combination so that there are two gaps SP in the circumferential direction. The inner ring N is a cylindrical member inserted into the second housing 2H, and the coil spring S is mounted in contact with the outer peripheral surface of the inner ring N.
At both ends in the axial direction of the coil spring S, hook portions F bent outward are formed at different positions in the circumferential direction, and the hook portions F are inserted into the two gaps, respectively. In this clutch device, the first housing 1H functions as an input shaft and the inner ring N functions as an output shaft.

When the first housing 1H (input shaft) rotates, the first locking piece 1HS contacts one of the two hook portions F of the coil spring S (the hook portion in front of the rotation direction) according to the rotation direction. The force that touches and pushes the hook portion F acts in the direction of tightening the spring (the direction in which the frictional force between the coil spring S and the inner ring N increases). At this time, since the second housing 2H can freely rotate, as a result, the first locking piece 1HS rotates integrally with the coil spring S, the inner ring N, and the second locking piece 2HS. . That is, the rotation of the first housing 1H that is the input shaft is transmitted to the inner ring N that is the output shaft.
On the other hand, when the inner ring N (output shaft) rotates while the second housing 2H is fixed, the movement in the circumferential direction is second locked by one of the hook portions F of the coil spring S according to the rotation direction. It is regulated by the piece 2HS. The hook portion F is equivalent to being pushed in the spring loosening direction by the second locking piece 2HS, the tightening force of the coil spring S with respect to the inner ring N is weakened, and the inner ring N rotates idly with respect to the coil spring S. That is, the rotation of the inner ring N that is the output shaft is blocked without being transmitted to the first housing 1H that is the input shaft.

Japanese Patent No. 4850653 Japanese Patent No. 4270338

  The lock type two-way clutch of Patent Document 1 controls the power transmission between the input shaft and the output shaft by utilizing the engagement and release of the roller, and the roller is installed in the wedge-shaped space. It is difficult to manufacture and assemble. In addition, there is a problem in that vibration or noise occurs during operation due to the biting of the roller or the like.

The clutch device of Patent Document 2, that is, the clutch device using the coil spring shown in FIG. 5, has advantages such as easy assembly and reduced manufacturing costs. And although power transmission can be controlled with a simple structure, when rotating from the output shaft side, the output shaft is idled and is not locked. Therefore, when this clutch device is applied to an elevating device, it is necessary to provide a brake mechanism separately and lock the output shaft when attempting to rotate from the output shaft side, which increases the size of the device and makes the structure complicated. Turn into.
Further, in the clutch device of FIG. 5, although the first housing and the second housing exist outside the inner ring and the coil spring, foreign matters such as dust and dirt are removed from the gap provided in the circumferential direction. By entering the inside of the second housing and adhering between the members, the failure frequency of the entire apparatus increases and the service life may be shortened.
An object of the present invention is to provide a novel lock-type bidirectional using a coil spring in which rotation from the input shaft is transmitted to the output shaft, and transmission of rotation from the output shaft to the input shaft is blocked as the output shaft cannot be rotated. It is to provide a clutch and to solve the above-mentioned problems.

In view of the above problems, in the present invention, similarly to the clutch device of FIG. 5, an input locking piece and an output locking piece are formed on the input shaft and the output shaft, respectively, and two gaps are formed in the circumferential direction. Install in combination to exist. Then, a coil spring is attached to the outer peripheral surface of the fixed inner ring, hook portions at both ends thereof are inserted into the two gaps, and the distance in the circumferential direction between the output locking piece and the hook portion is determined by the input unit. When the output shaft rotates by setting it to be larger than the circumferential distance between the stop piece and the hook portion, the output locking piece pushes the hook portion of the coil spring in the direction of tightening the spring, and the output shaft Was made non-rotatable. That is, the present invention
“An input shaft and an output shaft that are rotatable about a common rotation shaft are provided, and forward and reverse rotations from the input shaft are transmitted to the output shaft and from the output shaft to the input shaft. Transmission of rotation is a lock-type two-way clutch that is shut off with the output shaft being unrotatable,
Comprises a fixed housing interior space of circular cross-section is provided, and a shaft-like inner ring which is secured to the housing,
A coil spring formed by winding a wire is attached to the outer peripheral surface of the inner ring so that the inner peripheral surface thereof is in contact with each other, and hook portions bent outward are provided at both ends in the axial direction of the coil spring. Formed in different positions in the circumferential direction,
To the input shaft and the output shaft extends in the axial direction and an arc-shaped cross section of the input locking piece and the output latching pieces you slides on the inner circumferential surface of the inner space of the housing is formed respectively, the input The locking piece and the output locking piece are installed in combination so that there are two gaps in the circumferential direction,
The hook portions at both ends of the coil spring are inserted into each of the two gaps, and the circumferential distance between the output locking piece and the hook portion is the circumferential direction between the input locking piece and the hook portion. It is set larger than the distance of
When the input shaft is rotated, in the input locking piece pushes the hook portion of the coil spring in the loosening direction of the spring, the rotating the output shaft with the coil spring, plus a rotational force to said output shaft When the output locking piece pushes the hook part of the coil spring in the tightening direction of the spring, the output shaft becomes non-rotatable. "
This is a lock type two-way clutch.

In the present invention, together with the entering-output shaft has an input plate member which is fixed to the input locking piece has an output plate member to which the output shaft is fixed to the output latch piece, the said input plate member It is preferable that the output plate member is configured to be in surface contact.
Preferably, the inner ring has a cylindrical shape, and an input shaft portion of the input shaft is inserted into the inner ring.

The lock-type two-way clutch of the present invention includes a shaft-shaped inner ring and a coil spring formed by winding a wire rod in contact with the outer peripheral surface of the inner ring. The hook portions bent in the circumferential direction are formed at different positions in the circumferential direction. The input shaft and the output shaft are respectively formed with an input locking piece and an output locking piece having a circular arc cross section extending in the axial direction, and the input locking piece and the output locking piece have two gaps in the circumferential direction. The hook portions at both ends of the coil spring are respectively inserted into the gaps.
These points are the same as those of the clutch device of FIG. 5, but in the lock-type two-way clutch of the present invention, the shaft-shaped inner ring is fixed to be non-rotatable and the periphery of the output locking piece of the output shaft and the hook portion. The distance in the direction is set to be larger than the distance in the circumferential direction between the input locking piece of the input shaft and the hook portion.

When the input shaft rotates, the input locking piece comes into contact with the hook portion of the coil spring on the front side in the rotation direction, and the hook portion is pushed to come into contact with the output locking piece. The coil spring is attached to the inner ring so that a force acts in the loosening direction when the input locking piece comes into contact with the hook portion, and the circumferential distance between the output locking piece and the hook portion is set large. It is. Therefore, when the input shaft rotates, the coil spring is bent and the tightening force of the coil spring with respect to the inner ring is weakened, the output locking piece rotates together with the input locking piece and the coil spring, and the rotation is transmitted to the output shaft. .
On the other hand, when the output shaft is about to rotate, the output locking piece comes into contact with and pushes the hook portion of the coil spring on the front side in the rotational direction, and this direction is the tightening direction of the spring. Accordingly, the tightening force of the coil spring with respect to the inner ring is strengthened to prevent the rotation of the output locking piece, and the transmission of rotation from the output shaft to the input shaft is blocked (ie, locked) because the output shaft cannot rotate.

  As described above, the lock type bidirectional clutch of the present invention has a simple structure and can reliably transmit the rotational power from the input shaft to the output shaft, and lock the rotational power from the output shaft to the input shaft. Can be blocked. Therefore, even when applied to a lifting device, it is not necessary to separately provide a brake device on the output shaft and fix the output shaft, and the entire device can be made compact.

In the present invention, when the lock type bidirectional clutch is provided with a fixed housing, the inner ring on which the coil spring is mounted can be fixedly installed on the housing, and the input locking piece and the output locking piece are It can be accommodated in a housing. As a result, foreign matter such as dust and dirt can be prevented from entering the inside of the bidirectional clutch, and the durability of each accommodated member can be improved. It can be prevented from increasing.
Then, an internal space having a circular cross section can be provided in the housing, and the inner peripheral surface of the internal space can be configured such that the outer peripheral surfaces of the input locking piece and the output locking piece having an arcuate cross section slide. If it carries out like this, an input locking piece and an output locking piece will rotate, being supported by the internal peripheral surface of the internal space of a housing. That is, the deformation of the input locking piece and the output locking piece is prevented and the rigidity is substantially increased, and the transmission torque from the input shaft to the output shaft can be increased.

It is a figure which shows the Example of the lock type bidirectional | two-way clutch of this invention. It is a figure explaining the action | operation of the bidirectional | two-way clutch of FIG. FIG. 2 is an exploded view of parts constituting the bidirectional clutch of FIG. 1. FIG. 2 is an exploded view of parts constituting the bidirectional clutch of FIG. 1. It is a figure which shows an example of the conventional clutch apparatus using a coil spring. It is a figure explaining the action | operation of the clutch apparatus of FIG.

  Hereinafter, the lock type bidirectional clutch of the present invention will be described with reference to the drawings. First, the overall structure of the bidirectional clutch of the present invention is shown in FIG. 1, and an explanatory diagram of its operation is shown in FIG. 3 and 4 show the components of the bidirectional clutch of the embodiment of FIG. 1 alone.

  As shown in the central longitudinal sectional view of FIG. 1 (see also FIG. 3 where each component is shown as a single item), the bidirectional clutch of this embodiment has an input shaft 2 and an output shaft 3 in the center of a fixed housing 1. Although not shown, the input shaft 2 is connected to a driving side such as a motor, and the output shaft 3 is connected to a driven side such as a lifting device. The housing 1, the input shaft 2, and the output shaft 3 are all formed of hard synthetic resin.

  Referring to FIG. 3A together with FIG. 1, the housing 1 is a cup-shaped part including an end plate portion 11 having a regular hexagonal cross section and a peripheral wall portion 12 extending from the end plate portion 11 to one side in the axial direction. . The end plate portion 11 is formed with a through opening 11H that supports the input shaft 2. A lid 12C shown in FIG. 3B, which forms a part of the housing 1, is press-fitted into the opening end of the peripheral wall 12, and a through-opening 12CH that supports the output shaft 3 is inserted into the lid 12C. Is formed. The housing 1 is provided with a first space 13 in contact with the lid 12 </ b> C inside the peripheral wall portion 12 and a second space 14 in contact with the first space 13 inside the end plate portion 11. Both the first space 13 and the second space 14 are circular in cross section, and the diameter of the first space 13 is larger than the diameter of the second space 14. The second space 14 is formed with a pair of convex engaging protrusions 14s for fixing an inner ring described later.

  As shown in FIG. 3C, the input shaft 2 is a component in which an input plate member 21, an input locking piece 22, and an input shaft portion 23 are integrally formed. The input plate member 21 has a shape in which a peripheral portion of the disk is cut out in a fan shape over an angular region somewhat larger than 90 degrees, and an opening 21H is formed at the center thereof. The input locking piece 22 is a member having an arcuate cross section extending in the axial direction, and is fixed to the peripheral edge of the input plate member 21. In the illustrated embodiment, the input locking piece 22 has an angular region slightly smaller than 270 degrees in the circumferential direction. Exist. The input shaft portion 23 is a substantially cylindrical member that surrounds the opening 21 </ b> H of the input plate member 21 and extends in the same axial direction as the input locking piece 22, and is radially inward of the input locking piece 22. To position. A protruding engagement portion 24 connected to a drive source such as a motor (not shown) is formed at the tip of the input shaft portion 23.

  As shown in FIG. 3D, the output shaft 3 is a component in which the output plate member 31, the output locking piece 32, and the output shaft portion 33 are integrally formed. The output plate member 31 has a disc shape, and an opening 31H is formed at the center thereof. The output locking piece 32 is a member having an arcuate cross section extending in the axial direction, and is fixed to a part of the peripheral portion of the output plate member 31. In the illustrated embodiment, the output locking piece 32 is 90 in the circumferential direction. It exists over an angular region somewhat smaller than degrees. The output shaft 33 is a substantially cylindrical member that surrounds the opening 31H of the output plate member 31 and extends axially opposite to the output locking piece 32. A protrusion-like engagement portion 34 connected to is formed.

Referring to FIG. 4 together with FIG. 1, the bidirectional clutch of the present invention is formed by contacting a fixed shaft-like inner ring 4 and an outer peripheral surface of the inner ring 4 and winding a wire. The coil spring 5 is provided. The inner ring 4 and the coil spring 5 are both made of metal, and it is desirable that the inner ring 4 and the coil spring 5 be formed by appropriate metal processing. However, in a bidirectional clutch with a light load torque specification, one or both of the inner ring 4 and the coil spring 5 are made of resin. It is also possible to make it.
The inner ring 4 has a cylindrical shape (see FIG. 4A), and a pair of concave notches 41 are formed at one end thereof. The inner ring 4 is fixed to the housing 1 by engaging with the engaging protrusion 14s of the housing 1 to which the notch 41 is fixed.
At both ends in the axial direction of the coil spring 5, hook portions 51 bent outward are formed at different positions in the circumferential direction (see FIG. 4B). In the illustrated embodiment, the hook portions 51 extend in the normal direction with respect to the spring winding direction (i.e., the circumferential direction), and have an angular interval of 90 degrees.

The bidirectional clutch shown in FIG. 1 is assembled as follows.
First, the coil spring 5 is mounted on the outer peripheral surface of the other end portion of the inner ring 4 (that is, the end portion on which the notch 41 is not formed) in a state where the inner diameter is temporarily enlarged. Is inserted from the opening end of the peripheral wall portion 12 of the housing 1 so that the notch 41 engages with the engaging protrusion 14s in the second space 14 in the housing 1. Thereby, the inner ring 4 is fixed to the housing 1 and the coil spring 5 is positioned in the first space 13 of the housing 1.
Next, the input shaft 2 is connected to the output shaft 3 so that the input shaft portion 23 passes through the inside of the inner ring 4 and the through opening 11 </ b> H of the end plate portion 11 of the housing 1. It inserts sequentially from the opening end of the housing 1 so that it may be located in the axial direction opposite side. At this time, the input shaft 2 and the output shaft 3 are arranged such that the output locking piece 32 extending in the axial direction is located in the sector-shaped notch portion of the input locking piece 22 as shown by the cross-sectional arrow AA in FIG. Combined like this. As a result, there are two gaps 6 in the circumferential direction between the input locking pieces 22 and the output locking pieces 32, and hook portions 51 at both ends of the coil spring 5 are respectively provided in these gaps 6. Inserted.

  In the lock type bidirectional clutch of the present invention, when the hook portion 51 is inserted into the gap between both the locking pieces, the circumferential distance between the output locking piece 32 and the hook portion 51 is the same as the input locking piece 22. It is set to be larger than the circumferential distance from the hook portion 51. Here, “the distance in the circumferential direction between the input locking piece 22 and the hook portion 51” means that the circumferential end of the input locking piece 22 is brought into contact with one side of the hook portion 51. A circumferential distance between the other circumferential end and the other hook portion 51, that is, a circumferential play in which the input locking piece 22 can move between two fixed hook portions 51 (as shown in FIG. 1). The same applies to the “distance in the circumferential direction between the output locking piece 32 and the hook portion 51 (G in FIG. 1)”.

When the input shaft 2 and the output shaft 3 are inserted into the housing 1, the input plate member 21 and the output plate member 31 are in surface contact, and the outer peripheral surface of the input locking piece 22 and the outer peripheral surface of the output locking piece 32 are Both abut against the inner peripheral surface of the housing 1, that is, the first space 13, and slide on the inner peripheral surface during rotation.
In this embodiment, the input locking piece 22, the output locking piece 32, the inner ring 4 and the coil spring 5 are completely housed in the housing 1, so that foreign matters such as dust and dirt are generated. It is possible to reliably prevent the sliding surface from entering between the members and damage the sliding surface, to reduce the frequency of failure of the bidirectional clutch, and to extend the service life.

Next, the operation of the bidirectional clutch shown in FIG. 1 will be described with reference to FIG.
As shown by the arrow in the vertical sectional view on the left side of FIG. 2A, the input shaft 2 is rotated clockwise (as viewed from the right in the axial direction) around the rotation axis o by, for example, a drive source motor. Then, the input locking piece 22 formed on the input shaft 2 also rotates around the rotation axis o in the same direction. The input locking piece 22 rotated around the rotation axis o is one end of the coil spring 5 in the axial direction, that is, the hook portion 51 of the coil spring 5 at the front in the rotation direction (the hook portion 51 shown on the side in the figure). ) And the hook 51 is pushed in the spring loosening direction to weaken the tightening force of the coil spring 5 against the inner ring 4. Further, the input locking piece 22 pushes the output locking piece 32 through the hook portion 51 and rotates the output locking piece 32 together with the coil spring 5 while weakening the tightening force of the coil spring 5. When the output locking piece 32 rotates and comes into contact with the other hook portion 51 (the hook portion 51 shown on the upper side in the figure), the other hook portion 51 is also pushed by the output locking piece 32 and the inner ring 4 However, since the circumferential distance between the output locking piece 32 and the hook portion 51 is set large, this does not occur.

  When the input shaft 2 rotates counterclockwise, the input locking piece 22 comes into contact with a hook portion 51 (hook portion 51 shown on the upper side of the drawing) at the other axial end of the coil spring 5. Push this counterclockwise. The direction of the force is also the direction in which the tightening force of the coil spring 5 against the inner ring 4 is weakened. As in the case described above, the input locking piece 22 and the output locking piece 32 together with the coil spring 5 are counterclockwise. Rotate to Thus, in the lock type bidirectional clutch of the present invention, when the input shaft 2 rotates in the forward / reverse direction, the output shaft 3 rotates at the same speed in the same direction, and power is transmitted.

  In this embodiment, the outer peripheral surface of the input locking piece 22 and the outer peripheral surface of the output locking piece 32 are both in contact with the inner peripheral surface of the first space 13 of the housing 1 and slide on the inner peripheral surface during rotation. To do. Therefore, both the locking pieces are supported by the inner peripheral surface of the housing 1, and for example, even if the output locking piece 32 has a small circumferential length, the deformation is prevented and the input The transmission torque from the shaft 2 to the output shaft 3 can be increased. In addition, since the input plate member 21 and the output plate member 31 are in surface contact with each other, it is possible to prevent a runout during rotation and to perform stable power transmission.

On the other hand, as shown by the arrow in the vertical sectional view on the left side of FIG. 2 (b), the output shaft 3 is rotated clockwise around the rotation axis o (leftward in the axial direction) by the rotational torque from the output shaft 3 side. The output locking piece 32 pushes the hook portion 51 of the coil spring 5 in the direction of tightening the spring to increase the tightening force of the coil spring 5 against the inner ring 4. Does not rotate relative to the inner ring 4. The same applies to the case where the output shaft 3 is rotated counterclockwise (as viewed from the left in the axial direction) (in this case, the output locking piece 32 is connected to the hook portion 51 on the upper side in the figure). Abut).
Accordingly, transmission of rotation from the output shaft 3 to the input shaft 2 is blocked because the output shaft 3 cannot rotate. At this time, since the outer peripheral surface of the output locking piece 32 comes into contact with the inner peripheral surface of the first space 13 of the housing 1, the output locking piece 32 is caused by the rotational torque to rotate the output shaft 3. It is possible to avoid bending radially outward while in contact with the hook portion 51.

  As described above in detail, the present invention combines a fixed inner ring and a coil spring, and when the input shaft rotates, the input locking piece pushes the hook portion of the coil spring in the spring loosening direction, together with the coil spring and the output shaft. Even if it is going to rotate the output shaft, the output locking piece pushes the hook part of the coil spring in the tightening direction of the spring to make the output shaft non-rotatable and constitutes a simple lock type bidirectional clutch Is. In the above-described embodiment, the projecting engagement portions for connecting to the drive source and the driven source are formed on the input shaft and the output shaft, but a gear may be formed instead. . Further, it is apparent that various modifications can be made to the above-described embodiment, such as interposing bearings between the input shaft and the output shaft and the inner peripheral surface of the housing.

DESCRIPTION OF SYMBOLS 1 Housing 2 Input shaft 22 Input latching piece 3 Output shaft 32 Output latching piece 4 Inner ring 5 Coil spring 51 Hook part 6 Gap

Claims (3)

Provided with an input shaft and an output shaft that can rotate around a common rotation shaft, forward and reverse rotations from the input shaft are transmitted to the output shaft, and rotation from the output shaft to the input shaft The transmission is a lock-type bidirectional clutch that is blocked with the output shaft being unrotatable,
Comprises a fixed housing interior space of circular cross-section is provided, and a shaft-like inner ring which is secured to the housing,
A coil spring formed by winding a wire is attached to the outer peripheral surface of the inner ring so that the inner peripheral surface thereof is in contact with each other, and hook portions bent outward are provided at both ends in the axial direction of the coil spring. Formed in different positions in the circumferential direction,
To the input shaft and the output shaft extends in the axial direction and an arc-shaped cross section of the input locking piece and the output latching pieces you slides on the inner circumferential surface of the inner space of the housing is formed respectively, the input The locking piece and the output locking piece are installed in combination so that there are two gaps in the circumferential direction,
The hook portions at both ends of the coil spring are inserted into each of the two gaps, and the circumferential distance between the output locking piece and the hook portion is the circumferential direction between the input locking piece and the hook portion. It is set larger than the distance of
When the input shaft is rotated, in the input locking piece pushes the hook portion of the coil spring in the loosening direction of the spring, the rotating the output shaft with the coil spring, plus a rotational force to said output shaft In this case, the output type locking piece pushes the hook portion of the coil spring in the tightening direction of the spring, so that the output shaft cannot be rotated. The input shaft has an input plate member to which the input locking piece is fixed, the output shaft has an output plate member to which the output locking piece is fixed, and the input plate member and the output plate member are surfaces. The lock-type two-way clutch according to claim 1, which makes contact.   The lock type bidirectional clutch according to claim 1 or 2, wherein the inner ring has a cylindrical shape, and an input shaft portion of the input shaft is inserted through the inner ring.