JP7365668B2 - One-way clutch and rotating damper device with one-way clutch - Google Patents

Description

The present invention relates to a one-way clutch and a rotary damper device with a one-way clutch.

2. Description of the Related Art Conventionally, rotary dampers have been known that are installed in an opening/closing part such as a door and are used to slowly operate a door or the like that is biased in either the opening direction or the closing direction to reduce impact. In such a rotary damper, in order to generate a damping force only for rotation in one direction, a rotary damper device with a one-way clutch is constructed by combining it with a one-way clutch having a gear to which driving force is input. There is.

For example, a rotary damper device 1 with a one-way clutch described in Patent Document 1 includes an inner member 35 that is coupled to a rotor shaft 29 of a rotary damper 2 and rotates integrally with the rotor shaft 29, and a rotary damper device 1 that rotates the inner member 35 relative to each other. The one-way clutch 3 includes an outer member 36 that can be housed in the rotary damper and has an external gear 64 formed on the outer peripheral surface thereof, and a pair of planetary gears 37 that are interposed between the inner member 35 and the outer member 36. It is combined with 2.

In this one-way clutch 3, the planetary gear meshes with an internal gear 63 formed on the inner peripheral surface of the 37 outer member 36, and is housed in a recess 47 formed in the inner member 35. The recessed portion 47 of the inner member 35 is arranged on one side of the inner member 35 in the rotational direction than the planetary gear 37, and has a first wall 45 that extends outward in the radial direction of the inner member 35, and a first wall 45 that The second wall 46 is disposed on the other side in the rotational direction, and the length of the inner member 35 extending outward in the radial direction is about half that of the first wall 45, and the extending end has a corner. ing.

Then, when the outer member 36 rotates to one side (positive direction) with respect to the inner member 35, the planetary gear 37 rotated by the internal gear 63 of the outer member 36 comes into contact with the first wall 45, and the first It idles while sliding on the wall 45. In this case, since the first wall 45 extends radially outward from the position where the tooth tips of the planetary gear 37 come into contact, the planetary gear 37 does not mesh with the outer end of the first wall 45, and the first wall 45 Driving around on the wall 45. Thereby, even if the outer member 36 rotates, the inner member 35 does not rotate.

On the other hand, when the outer member 36 rotates in the other direction (negative direction) with respect to the inner member 35, the planetary gear 37 rotated by the internal gear 63 of the outer member 36 moves toward the second wall 46 and rotates toward the second wall 46. It engages with the corner of the second wall 46 and becomes unrotatable. As a result, the inner member 35 engages with the outer member 36 via the planetary gear 37, and rotates together with the outer member 36.

In the one-way clutch 3 configured in this manner, the support shaft 42 of the inner member 35 is inserted into the through hole 66 of the outer member 36 in sliding contact, and the protrusion 52 of the inner member 35 is inserted into the annular groove of the outer member 36. 65, the outer member 36 is rotatably supported relative to the inner member 35 in the circumferential direction. That is, the outer member 36 is supported by the rotor shaft 29 via the inner member 35.

Patent No. 5666376

However, in the one-way clutch 3, since the outer member 36 is supported by the rotor shaft 29 via the inner member 35, the supporting structure of the outer member 36 with respect to the rotor shaft 29 is complicated.

Therefore, the present invention provides a one-way clutch and a rotary damper device with a one-way clutch that can support the gear of the one-way clutch by a shaft with a simple structure.

The problem to be solved by the present invention is as described above, and next, means for solving this problem will be explained.

That is, in claim 1, the first extending part and the second extending part are columnar and have a notched shaft portion and face each other with a space between them, a rotatable rotating shaft, supported in the space so as to be slidable on the rotating shaft in a radial direction perpendicular to the axial direction, and rotatable integrally with the rotating shaft around the axial center; a slide member having claws protruding radially outward at both ends in the sliding direction; a cylindrical member supported by the rotating shaft so as to be relatively rotatable about the axis and housing the slide member; a gear member having a plurality of external teeth protruding radially outward from an outer circumferential surface of the cylindrical member and a plurality of internal teeth protruding radially inward from an inner circumferential surface of the cylindrical member; a support member that is attached to the tip and supports the gear member so that it does not fall off the rotating shaft; The gear member has a retraction surface that comes into contact with the internal teeth and an engagement surface that comes into contact with the internal teeth when the gear member rotates to the other side with respect to the rotation axis, and the gear member rotates to one side. When the internal teeth and the retraction surface come into contact with each other, the slide member slides in the sliding direction, the claw part retracts from the internal teeth, and the gear member rotates independently of the rotating shaft. However, when the inner teeth and the engagement surface come into contact with each other when the gear member rotates to the other side, the inner teeth and the engagement surface engage with each other, and the gear member and the rotating shaft are brought into contact with each other. It rotates as a unit.

In claim 2, the rotating shaft includes a protruding portion, the supporting member includes a convex portion, and when the protruding portion of the rotating shaft and the convex portion of the supporting member engage with each other, the supporting member It is attached to a rotating shaft.

In claim 3, the one-way clutch, a housing into which the rotating shaft of the one-way clutch is inserted, and a rotor blade housed in the housing and rotatable integrally with the rotating shaft about the axis center. and a viscous fluid sealed in the housing and applying rotational resistance to the rotor blades.

According to the present invention, the gear member can be supported on the rotating shaft with a simple configuration.

FIG. 1 is a perspective view showing a rotary damper device with a one-way clutch according to an embodiment of the present invention. FIG. 3 is an exploded perspective view showing a rotary damper device with a one-way clutch. FIG. 3 is a cross-sectional view showing a rotary damper device with a one-way clutch. FIG. 3 is a plan view showing the housing and rotor shaft of the rotary damper device with a one-way clutch. FIG. 3 is a plan view showing a support member of the rotary damper device with a one-way clutch. FIG. 3 is a bottom view showing a support member of the rotary damper device with a one-way clutch. FIG. 6 is a diagram showing an operation when a gear member of the rotary damper device with a one-way clutch rotates to one side with respect to the rotor shaft. FIG. 6 is a diagram showing an operation when a gear member of the rotary damper device with a one-way clutch rotates to one side with respect to the rotor shaft. FIG. 7 is a diagram illustrating an operation when a gear member of the rotary damper device with a one-way clutch rotates to the other side with respect to the rotor shaft. FIG. 6 is a diagram illustrating an operation when a gear member of the rotary damper device with a one-way clutch rotates toward the other side with respect to the rotor shaft.

Next, a mode for carrying out the present invention will be described using FIGS. 1 to 10.

[Rotating damper device with one-way clutch]
A rotary damper device 1 with a one-way clutch (hereinafter simply referred to as "rotary damper device 1") shown in FIGS. 1 to 3 is an embodiment of a rotary damper device with a one-way clutch according to the present invention.
The rotary damper device 1 is provided at the opening/closing part of an opening/closing door that is rotatably connected to the main body of OA equipment such as a small printer, and applies damping force when the opening/closing door rotates in either the opening direction or the closing direction. It is used to generate The rotary damper device 1 is not limited to this, and can be provided at a rotating portion of a second member rotatably connected to the first member.

The rotary damper device 1 includes a housing 10, a rotor blade 70, a rotor shaft 20, a slide member 30, a gear member 50, and a viscous fluid 80.
In the rotary damper device 1, a one-way clutch 2 is configured by a rotor shaft 20, a slide member 30, a gear member 50, and a support member 60. That is, the rotary damper device 1 is configured by connecting the one-way clutch 2 to a rotary damper that applies rotational resistance to the rotor shaft 20. The rotor shaft 20 is an example of a rotating shaft that is rotatable around the axial center.

As shown in FIGS. 1 to 4, the housing 10 includes a housing body 10A and a lid body 10B.
The housing main body 10A is formed in a cylindrical shape with a bottom and has a bottom surface 11. A cylindrical support shaft 12 is formed at the center of the bottom surface 11 and projects into the housing main body 10A along the axis P direction. An opening 13 is formed at the end of the housing body 10A on the opposite side to the bottom surface 11 in the direction of the axis P.
The lid body 10B closes the opening 13 of the housing body 10A. A circular through hole 14 penetrating in the direction of the axis P is formed in the center of the lid 10B.

The rotor blade 70 is formed into a substantially disk shape, and is rotatably housed in the housing body 10A about the axis P. A bearing hole 71 is formed in the center of the rotor blade 70 on the side facing the bottom surface 11 . The bearing hole 71 is configured to be able to fit into the support shaft 12 of the housing body 10A. The rotor 20 is rotatably supported by the housing 10 by rotatably fitting the bearing hole 71 into the support shaft 12 .

The rotor shaft 20 extends from the center of the rotor blade 70 toward one side in the direction of the axis P, and is configured to be rotatable about the axis P. The rotor shaft 20 is configured to be rotatable integrally with the rotor blades 70. The rotor shaft 20 extends from the inside of the housing 10 to the outside of the housing 10 through the through hole 14 of the lid 10B.

The rotor shaft 20 has a portion inserted into the housing 10 and a portion protruding outside the housing 10. A portion of the rotor shaft 20 that projects outside the housing 10 is an extension shaft 21 . A fitting portion 22 is formed at the end of the extending shaft 21 of the rotor shaft 20 on the housing 10 side. The fitting portion 22 is formed to have a larger diameter than the extending shaft 21. The fitting portion 22 is exposed to the outside of the housing 10.

The extending shaft 21 is formed into a bifurcated shape such that the axial center portion of the cylinder is notched. By being bifurcated in this way, the extending shaft 21 is configured to be slightly elastically deformable toward the axis P side.
One of the bifurcated portions of the extending shaft 21 is referred to as a first extending portion 23, and the other is referred to as a second extending portion 24.
The space between the first extension part 23 and the second extension part 24 is configured as an insertion part 25 into which the slide member 30 is inserted. The first extending portion 23 and the second extending portion 24 are configured to oppose each other about the axis P. In each of the first extending portion 23 and the second extending portion 24, the surface on the axis P side is composed of a surface perpendicular to the axis P, and both end portions thereof (boundary portions between the parallel surface and the outer surface ) is formed with a C chamfer.

The first extending portion 23 and the second extending portion 24 each include a protruding portion 26 . The protrusion 26 is provided at the tip of the first extension 23 and the second extension 24 . The protruding portion 26 is configured to protrude outward (in a direction perpendicular to the axis P) from the outer surfaces of the first extending portion 23 and the second extending portion 24 .

Viscous fluid 80 is enclosed within housing 10 . The viscous fluid 80 applies rotational resistance to the rotor blades 70 that are housed in the housing body 10A and rotate around the axis P, and to the rotor shaft 20 that rotates integrally with the rotor blades 70.
The viscous fluid 80 is made of, for example, a viscous fluid such as silicone oil. The magnitude of the rotational resistance applied to the rotor blades 70 can be adjusted by appropriately changing the viscosity of the viscous fluid 80 and the shape of the rotor blades 70.
A seal member 15 such as an O-ring is interposed between the rotor shaft 20 and the lid 10B to prevent viscous fluid 80 from leaking between the rotor shaft 20 and the lid 10B. .

As shown in FIGS. 1 to 3 and 7 to 10, the gear member 50 is configured to be rotatable about the axis P to one side and the other side opposite to the one side. 51, an external gear 52, and an internal tooth 53.
The gear body 51 is formed of a cylindrical member that is supported by the rotor shaft 20 so as to be relatively rotatable about the axis P. The external gear 52 protrudes radially outward from the outer peripheral surface of the gear main body 51 and has a plurality of external teeth 52a arranged along the circumferential direction. The internal teeth 53 protrude radially inward from the inner circumferential surface of the gear main body 51, and are provided in plural along the circumferential direction.

The gear main body 51 has an accommodating part 51a in which internal teeth 53 are formed and accommodates the slide member 30, and a support part 51b formed with a smaller diameter than the accommodating part 51a and supported by the rotor shaft 20. The inner diameter of the support portion 51b of the gear body 51 and the outer diameter of the extending shaft 21 are formed to have substantially the same dimensions, so that the extending shaft 21 can be inserted into the supporting portion 51b.

The inner diameter of the accommodating portion 51a in the gear body 51 and the outer diameter of the fitting portion 22 of the rotor shaft 20 are formed to have approximately the same dimension, and the fitting of the housing 10 side end of the accommodating portion 51a and the rotor shaft 20 is substantially the same. It is configured to be able to fit into the portion 22.

The internal teeth 53 include a first surface 53a disposed on the downstream side in the direction of rotation of the gear member 50 to one side, and a first surface 53a disposed on the upstream side of the first surface 53a in the direction of rotation of the gear member 50 to one side. It has a second surface 53b. The first surface 53a is formed as an inclined surface that slopes toward the downstream side in the direction of rotation of the gear member 50 to one side as it goes radially outward. The second surface 53b is formed as an inclined surface that slopes toward the upstream side in the direction of rotation of the gear member 50 to the other side as it goes radially outward.

The internal teeth 53 are arranged at equal intervals along the circumferential direction of the gear member 50. The internal teeth 53 are formed such that the center of a circle C passing through the tip of each internal tooth 53 (the boundary between the first surface 53a and the second surface 53b) is the axis P (see FIG. 7).

As shown in FIGS. 2 to 3 and 7 to 10, the slide member 30 is formed of a rod-shaped member, and slides in the insertion portion 25 of the extending shaft 21 in the radial direction perpendicular to the direction of the axis P. Possibly inserted. The slide member 30 is supported by the rotor shaft 20 by being inserted into the insertion portion 25, and is configured to be rotatable integrally with the rotor shaft 20 about the axis P. The slide member 30 has a pair of side surfaces 30a extending along the sliding direction.
The slide member 30 has claw portions 31 that protrude outward in the radial direction at both ends in the sliding direction.

The claw portion 31 has a retraction surface 31a disposed on the upstream side in the direction of rotation of the gear member 50 to one side, and an engagement surface 31a disposed on the downstream side of the retraction surface 31a in the direction of rotation of the gear member 50 to one side. It has a mating surface 31b. The retraction surface 31a is formed as an inclined surface that slopes toward the downstream side in the rotational direction of the gear member 50 to one side as it goes radially outward. The engagement surface 31b is formed as an inclined surface that slopes toward the upstream side in the direction of rotation of the gear member 50 to the other side as it goes radially outward.
The claw portion 31 protrudes from the side surface 30a toward the engagement surface 31b in a direction perpendicular to the sliding direction of the slide member 30 and perpendicular to the side surface 30a. That is, the claw portion 31 protrudes further downstream than the side surface 30a in the direction of rotation of the gear member 50 to one side.

The length between the tip of one claw portion 31 and the tip of the other claw portion 31 in the slide member 30 is longer than the diameter of the circle C. Therefore, regardless of the sliding position of the slide member 30 with respect to the rotor shaft 20, at least one of the claw portions 31 will be located on the outside of the circle C in the radial direction.

The retracting surface 31a of the claw portion 31 comes into contact with the internal teeth 53 of the gear member 50 when the gear member 50 rotates to one side with respect to the rotor shaft 20, and the engaging surface 31b of the claw portion 31 contacts the inner teeth 53 of the gear member 50. rotates to the other side with respect to the rotor shaft 20 and comes into contact with the internal teeth 53 of the gear member 50.
Further, the first surface 53a of the internal teeth 53 in the gear member 50 comes into contact with the claw portion 31 of the slide member 30 as the gear member 50 rotates to one side with respect to the rotor shaft 20, and the gear member 50 contacts the claw portion 31 of the slide member 30. By rotating to the other side with respect to 20, it comes into contact with the claw portion 31 of the slide member 30.

As shown in FIGS. 1 to 3 and 5 to 6, the support member 60 is attached to the tip of the rotor shaft 20 and supports the gear member 50 so that it does not fall off the rotor shaft 20.
The support member 60 is configured in a substantially disk shape, is attached to the extending shaft 21 of the rotor shaft 20 (the distal end portions of the first extending shaft 23 and the second extending shaft 24), and is arranged above the gear member 50. Ru. The support member 60 includes a main body 61, a pair of through holes 62, and a protrusion 63.

The main body 61 is configured such that the lower part has a smaller diameter than the upper part, and a step is created between the upper and lower circumferential surfaces. The main body 61 has its lower part disposed inside the upper part of the gear body 51 of the gear member 50 with the support member 60 disposed above the gear member. The outer diameter of the main body 61 is configured to be smaller than the inner diameter of the gear main body 51.

The through hole 62 penetrates the main body 61 in the direction of the axis P. The pair of through holes 62 are arranged to oppose each other about the axis P. The through-hole 62 is configured such that, when the support member 60 is attached to the rotor shaft 20, the tips of the first extending shaft 23 and the second extending shaft 24 of the rotor shaft 20 are fitted into the through hole 62.

The convex portion 63 is provided on the surface of the through hole 62 on the side opposite to the axis P side. The protrusion 63 engages with the protrusion 26 of the rotor shaft 20 while being attached to the rotor shaft 20 .
In this way, the main body 61 of the support member 60 is disposed above the gear main body 50, and the protrusion 63 of the support member 60 engages with the protrusion 26 of the rotor shaft 20, thereby preventing it from falling off the rotor shaft 20. Supports the gear member 50.

In this way, since the support member 60 is attached to the tip of the rotor shaft 20 and supports the gear member 50 so as not to fall off from the rotor shaft 20, the gear member 50 is supported on the rotor shaft 20 with a simple structure. It can be done. Further, with this configuration, the number of parts constituting the one-way clutch 2 can be reduced.
Further, when attaching the support member 60 to the rotor shaft 20, the first extension part 23 and the second extension part 24, which are configured in a bifurcated shape, are elastically deformed slightly inwardly, and the first extension part 23 and the second extending portion 24 are inserted into the through hole 62 with the distal end of the support member 60 . Then, the protruding portion 26 of the rotor shaft 20 and the convex portion 63 of the supporting member 60 engage with each other, so that the supporting member 60 is attached to the rotor shaft 20. Therefore, it is possible to support the gear member 50 on the rotor shaft 20 with a simple structure.

[Operation of one-way clutch in rotary damper device with one-way clutch]
The one-way clutch 2 in the rotary damper device 1 configured as described above operates as follows.
In the following description of the operation of the one-way clutch 2, one of the pawls 31 formed at both ends of the slide member 30 will be referred to as a pawl 311, and the other pawl 31 will be referred to as a pawl. It is expressed as part 312. In addition, the internal teeth 53 of the gear member 50 are arranged in the order of the internal teeth 531, the internal teeth 532, and the internal teeth that come into contact with the claw portion 31 when the gear member 50 is rotated to one side from the state shown in FIG. 7(a). 533 and internal tooth 534 as appropriate.

First, the operation of the one-way clutch 2 when the gear member 50 rotates to one side with respect to the rotor shaft 20 will be described.
FIG. 7 shows a state in which the claw portion 311 is located outside the circle C in the radial direction, and the claw portion 312 does not protrude outside the circle C in the radial direction. In the state shown in FIG. 7, the internal teeth 531 are located upstream of the claw portion 311 in the rotational direction toward one side of the gear member 50. As shown in FIG.

Then, when the gear member 50 rotates to one side with respect to the rotor shaft 20, the internal teeth 531 of the gear member 50 come into contact with the claw portion 311. When the gear member 50 rotates to one side after the internal teeth 531 come into contact with the claws 311, the claws 311 are pressed by the internal teeth 531, the claws 311 retreat radially inward from the internal teeth 531, and slide. The member 30 slides toward the claw portion 312 side.

In this case, the first surface 531a of the internal tooth 531 comes into contact with the retraction surface 311a of the claw portion 311, but the retraction surface 311a is inclined downstream in the rotational direction toward one side of the gear member 50 as it goes radially outward. Since the claw portion 311 is formed on an inclined surface, the claw portion 311 can be smoothly retracted from the internal teeth 531 as the gear member 50 rotates to one side.
Further, the first surface 531a of the internal tooth 531 is formed as an inclined surface that is inclined downstream in the rotational direction of the gear member 50 to one side as it goes radially outward. During rotation, the claw portion 311 can be more smoothly retracted from the internal teeth 531.

The slide member 30 slides toward the claw portion 312 side until the claw portion 311 does not protrude outward from the circle C by being pressed by the internal teeth 531 of the gear member 50 that rotates the claw portion 311 to one side. do.
After the slide member 30 slides until the claw portion 311 does not protrude outward from the circle C, the internal teeth 531 do not engage with the claw portion 311 and move toward one side of the gear member 50 than the claw portion 311. Move downstream in the direction of rotation.
When the slide member 30 is in the sliding position where the claw portion 311 does not protrude outward from the circle C, the claw portion 312 protrudes outward from the circle C.

As shown in FIG. 8, when the gear member 50 further rotates to one side, the internal teeth 532 of the gear member 50 come into contact with the claw portion 312 located on the opposite side of the claw portion 311. As shown in FIG. When the gear member 50 rotates to one side after the internal teeth 532 come into contact with the claws 312, the claws 312 are pressed by the internal teeth 532, the claws 312 retreat radially inward from the internal teeth 532, and slide. The member 30 slides toward the claw portion 311 side.
The slide member 30 slides until the claw portion 312 does not protrude outward from the circle C, and then the internal teeth 532 move toward one side of the gear member 50 than the claw portion 312 without engaging the claw portion 312. Move downstream in the direction of rotation.

Thereafter, when the gear member 50 further rotates to one side, the internal teeth 533 of the gear member 50 come into contact with the claw portion 311, and the slide member 30 is clawed until the claw portion 311 does not protrude outward from the circle C. 312 side. When the gear member 50 further rotates to one side, the internal teeth 534 of the gear member 50 come into contact with the claw portion 312, and the slide member 30 rotates the claw portion 311 until the claw portion 312 does not protrude outward from the circle C. Slide to the side.

In this manner, when the gear member 50 rotates to one side, the internal teeth 53 of the gear member 50 alternately abut against the claws 311 and 312 of the slide member 30, and the internal teeth 53 contact the claws 311, 312 of the slide member 30. When it comes into contact with , the claws 311 and 312 are retracted from the internal teeth 53 and the slide member 30 is configured to slide alternately toward the claw 312 and the claw 3111 in the sliding direction. As a result, the internal teeth 53 of the gear member 50 do not engage with the claws 311 and 312 of the slide member 30, and the gear member 50 rotates independently of the rotor shaft 20.
Since the gear member 50 rotates independently of the rotor shaft 20 and the rotor shaft 62 does not rotate, the gear member 50 rotates without being subjected to rotational resistance.

Next, the operation of the one-way clutch 2 when the gear member 50 rotates to the other side with respect to the rotor shaft 20 will be described.
FIG. 9 shows a state in which the claw portion 311 is located outside the circle C in the radial direction, and the claw portion 312 does not protrude outside the circle C in the radial direction. In the state shown in FIG. 9, the internal teeth 531 are located upstream of the claw portion 311 in the rotational direction toward the other side of the gear member 50. As shown in FIG.

Then, when the gear member 50 rotates to the other side with respect to the rotor shaft 20, the internal teeth 531 of the gear member 50 come into contact with the claw portion 311, and the internal teeth 531 and the claw portion 311 engage with each other.
As shown in FIG. 10, when the gear member 50 rotates to the other side after the internal teeth 531 and the claw portion 311 engage, the slide member 30 does not slide in the sliding direction and the internal teeth 531 and the claw portion 311 engage with each other. The engaged state is maintained, and the rotor shaft 20 rotates integrally with the gear member 50. When the rotor shaft 20 rotates integrally with the gear member 50, rotational resistance due to the viscous fluid 80 applied to the rotor shaft 62 when the rotor shaft 62 rotates is also transmitted to the gear member 50.

In this case, the second surface 531b of the internal tooth 531 comes into contact with the engagement surface 311b of the claw portion 311, but the engagement surface 311b is on the upstream side in the rotational direction to the other side of the gear member 50 as it goes radially outward. Since the gear member 50 is formed into an inclined surface that is inclined to the opposite side, when the gear member 50 rotates to the other side with respect to the rotor shaft 20, it is easy to maintain the engaged state between the internal teeth 531 and the claw portion 311.
Furthermore, the second surface 531b of the internal tooth 531 is formed as an inclined surface that slopes toward the upstream side in the rotation direction to the other side of the gear member 50 as it goes radially outward. When the inner tooth 531 and the claw portion 311 are rotated to the other side, the inner teeth 531 and the claw portion 311 can be reliably engaged.

Further, in the one-way clutch of the rotary damper device 1, the length between the tip of the claw portion 311 and the tip of the claw portion 312 in the slide member 30 is formed longer than the diameter of the circle C, and at least one Since one of the claws 311 and 312 is located outside the circle C, when the gear member 50 rotates to the other side with respect to the rotor shaft 20, the claws are The engagement surface 311b of 311 or the engagement surface 312b of the claw portion 312 and the second surface 53b of the internal tooth 53 are reliably engaged, and the gear member 50 and rotor shaft 20 can rotate integrally. It is now possible.

In addition, in the one-way clutch 2, the gear member 50 and the rotor shaft 20 are engaged with each other by the claw portion 31 of the slide member 30 that is slidably provided on the rotor shaft 20, and the gear member 50 and the rotor shaft 20 are engaged with each other. Since the one-way clutch is configured to switch between an engaged state and a non-engaged state, it is possible to make the one-way clutch smaller than, for example, a one-way clutch configured in which a plurality of planetary gears are housed inside the outer member. It has become.

In this way, when the one-way clutch 2 is miniaturized, the number of external teeth 52a in the external gear 52 of the gear member 50 can be reduced. Therefore, when the gear that transmits rotational force to the rotor shaft 20 is meshed with the external gear 52, the rotational speed of the rotor shaft 20 is increased to increase the rotational resistance to the rotor shaft 20 generated in the rotary damper device 1. This makes it possible to improve the usability of the rotary damper device 1 connected to the one-way clutch 2.

1 Rotating damper device with one-way clutch 2 One-way clutch 10 Housing 10A Housing main body 10B Lid 20 Rotor shaft 21 Extending shaft 22 Fitting portion 23 First extending shaft 24 Second extending shaft 25 Insertion portion 26 Projecting portion 30 Slide member 30a Side surface 31, 131 Claw portion 31a, 131a Retraction surface 31b, 131b Engagement surface 50 Gear member 51 Gear body 52 External gear 52a External tooth 53 Internal tooth 53a First surface 53b Second surface 60 Support member 61 Main body 62 Through hole 63 Convex portion 70 Rotor blade 80 Viscous fluid C Circle (passing through the tip of each internal tooth) P Axis

Claims (3)

a rotating shaft that is columnar and includes a first extending portion and a second extending portion that face each other with a notched shaft portion and a space therebetween, and is rotatable about the shaft center;
The rotary shaft is slidably supported in the space in a radial direction perpendicular to the axial direction, and is rotatable integrally with the rotary shaft around the axial center, and is provided at both ends in the sliding direction. a slide member having a claw portion projecting radially outward;
a cylindrical member that is relatively rotatably supported by the rotating shaft around the axis and accommodates the slide member; a plurality of external teeth protruding radially outward from an outer peripheral surface of the cylindrical member; a gear member having a plurality of internal teeth protruding radially inward from the inner peripheral surface of the cylindrical member;
a support member that is attached to the tip of the rotating shaft and supports the gear member so that it does not fall off the rotating shaft;
Equipped with
The claw portion includes a retraction surface that comes into contact with the internal tooth when the gear member rotates to one side with respect to the rotation shaft, and a retraction surface that comes into contact with the internal teeth when the gear member rotates to the other side with respect to the rotation shaft. It has an engagement surface that comes into contact with the internal teeth,
When the gear member rotates to one side, when the inner teeth and the retraction surface come into contact with each other, the slide member slides in the sliding direction, the claw part retreats from the inner teeth, and the gear member Rotates independently of the rotating shaft, and when the internal teeth and the engagement surface come into contact when the gear member rotates to the other side, the internal teeth and the engagement surface engage with each other. the gear member and the rotating shaft rotate integrally;
A one-way clutch characterized by: The rotating shaft includes a protrusion,
The support member includes a convex portion,
The supporting member is attached to the rotating shaft by engaging the protruding portion of the rotating shaft with the convex portion of the supporting member.
The one-way clutch according to claim 1. The one-way clutch according to claim 1 or 2;
a housing into which the rotating shaft of the one-way clutch is inserted;
a rotor blade housed in the housing and rotatable integrally with the rotating shaft around the axis;
a viscous fluid sealed in the housing and imparting rotational resistance to the rotor blades;
Equipped with
A rotary damper device with a one-way clutch characterized by:

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