JP2008194280A - Connecting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To ensure the biting force of wedge members for keeping a state that the orbital motion of an external tooth member is stopped, and in the meantime, to smooth the sliding movement when the external tooth member is pressed from inside to perform the orbital motion. <P>SOLUTION: A reclining apparatus 4 as this connecting apparatus includes an internal tooth member 10 and the external tooth member 20. The cylindrical section 12 of the internal tooth member 10 and the penetrating hole 22 of the external tooth member 20 are eccentric to each other, and the orbital motion of the external tooth member 20 is stopped by the biting-in force of the wedge members 30A and 30B which are arranged in a gap between both parts. The wedge members 30A and 30B are removed from the biting-in state when being pressed by contact sections 52A and 53A and contact sections 52B and 53B which are formed on a pressing member 50 made of a resin. When the wedge members 30A and 30B are released from the biting-in state, the contact sections 52A and 53A and the contact sections 52B and 53B made of the resin slide on the inner peripheral surface of the penetrating hole 22 of the external tooth member 20 and press the inner peripheral surface. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a connecting device. More specifically, the present invention relates to a connecting device that is positioned between two rotating members that are disposed so as to be rotatable relative to each other and connects them.

Conventionally, a reclining device is provided in a vehicle seat as an adjustment device for a seat back back angle. Here, Patent Document 1 below discloses a configuration of a reclining device that can adjust the angle of the seat back steplessly. In this disclosure, the reclining device is disposed between the seat back and the seat cushion in a pair of left and right, and the backrest angle of the seat back is adjusted steplessly in accordance with these synchronized movements. ing.
Specifically, the reclining device is provided in such a manner that the skeleton frame of the seat back and the skeleton frame of the seat cushion are connected to each other. This reclining device has a plate-shaped internal gear member integrally having an internal gear, and a plate-shaped external gear member integrally having an external gear provided in mesh with the internal gear. These internal tooth members and external tooth members are rigidly connected to the above-described skeleton frames. The internal gear member and external gear member are sandwiched so as not to move apart from each other in the plate thickness direction, and their meshing structure causes the external gear to revolve along the inner peripheral surface of the internal gear. Can be exercised. Here, the external gear is formed with a smaller diameter than the internal gear, and has a smaller number of teeth than the internal gear. Therefore, by causing the external gear to revolve inside the internal gear, the seat back can be tilted relative to the seat cushion due to the difference in the number of teeth.
The revolving motion of the external gear is disposed in a gap between the inner peripheral surface of the through hole formed in the central portion of the outer gear and the outer peripheral surface of the cylindrical portion that is formed in a cylindrical shape from the central portion of the internal gear. This is done by pushing the pair of wedge members in the circumferential direction. These wedge members are normally held in a posture state in which they are bitten into the gap so as to press the external gear against the inner peripheral surface of the internal gear by a spring member hooked between them. Then, as the wedge member moves to pivot the operating member inserted through the central portion of the reclining device, one of the wedge members is pushed in a direction to remove the biting state. Here, since the external gear is configured to revolve along the inner peripheral surface of the internal gear, the central axis thereof is arranged in an eccentric relationship from the central axis of the internal gear. Therefore, the external gear receives the pushing force from the inside in the circumferential direction in order so that the rotating cam receives the pushing force from the inside as one of the wedge members is pushed in the circumferential direction. Revolving along the inner surface. When the wedge member stops moving in the circumferential direction, the wedge member is returned to and held in the posture state of being bitten into the gap by the urging force of the spring member.
Here, in the reclining device of the above-mentioned document, in order to improve the slip of the wedge member, a cylindrical bush is interposed along the inner peripheral surface of the external gear on which the wedge member slides. Accordingly, the wedge member can smoothly slide in the circumferential direction along the inner peripheral surface of the external gear.
Special table 2003-507101 gazette

  However, in the prior art disclosed in the above-mentioned Patent Document 1, the wedge member always has its outer peripheral surface as a bush even when it is in a state where it is bitten into the gap between the external tooth member and the internal tooth member. It comes into contact. Therefore, the movement of sliding in the circumferential direction when the wedge member is removed from the biting state and pushing the external tooth member becomes smooth, but the biting force to bite into the gap is weakened accordingly. End up.

  The present invention has been devised as a solution to the above-described problem, and the problem to be solved by the present invention is that the wedge member bite force for holding the external gear member in a stopped state of revolving motion. On the other hand, the sliding movement is smoothed when the external tooth member is pressed from the inside to make a revolving motion.

In order to solve the above problems, the connecting device of the present invention takes the following means.
First, the first invention is a connecting device that is positioned between two rotating members that are arranged to be rotatable relative to each other, and has an internal tooth member and an external tooth member. The internal gear member is integrally connected to one of the two rotating members, and integrally includes an internal gear that is formed to protrude in a cylindrical shape. The external tooth member integrally has an external gear formed in a cylindrical shape that is provided in mesh with an internal gear formed on the internal tooth member, and is connected to the other of the two rotating members. The external gear formed on the external gear member has a smaller diameter than the internal gear formed on the internal gear and has a different number of teeth from each other, and is along the internal peripheral surface of the internal gear engaged with the external gear. By relatively revolving, the two rotating members relatively rotate due to the difference in the number of teeth of both gears. A through hole penetrating in the axial direction is formed at the center of the external gear. A cylindrical tube portion inserted into a through hole formed in the external gear protrudes from the central portion of the internal gear. The through-hole formed in the external gear and the cylindrical portion formed in the internal gear are arranged in an eccentric relationship with each other due to the meshing structure of both gears. A pair of wedge members are disposed in an axially symmetric position inside the eccentric gap shape between the inner peripheral surface of the through hole and the outer peripheral surface of the cylindrical portion. The pair of wedge members are normally held in a state where the outer gear is pressed against the inner peripheral surface of the internal gear by being sandwiched between the eccentric gap shapes by the biasing force of the biasing member hooked on them. Has been. The external gear is penetrated by pushing the gap shape in the circumferential direction by rotating the shaft of the pushing member inserted into the through hole against one of the wedge members. The holes are sequentially pushed in the circumferential direction from the inner circumferential surface side of the hole, and relatively revolve along the inner circumferential surface of the internal gear. The pressing member is integrally formed with a resin contact portion that can contact the inner peripheral surface of a through hole formed in the external gear. When the pair of wedge members bite into the gap shape, the resin abutment portion has a through hole due to the action of the inner circumferential surface of the through hole being separated from the outer circumferential surface of the cylindrical portion by the biting force of the wedge member. It is held in a position separated from the inner peripheral surface. The abutment portion is brought into contact with the inner circumferential surface of the through-hole when one wedge member is pushed in the circumferential direction by the pushing member and removed from the biting state. The inner peripheral surface of the through-hole is pressed while rotating.
According to the first aspect of the present invention, the pair of wedge members disposed in the gap between the through hole formed in the external gear and the cylindrical portion formed in the internal gear are normally attached to the urging member. The gap is held in a state of being bitten by the force. In this state, the inner peripheral surface of the through hole is pressed outward by the biting force of the wedge member, and the external tooth surface of the external gear is held as pressed against the internal tooth surface of the internal gear. Accordingly, the external gear and the internal gear are engaged with each other without rattling, and the revolving motion of the external gear is held in a stopped state. At this time, the resin contact portion formed on the pushing member is separated from the inner peripheral surface of the through hole by the action of the inner peripheral surface of the through hole being separated from the outer peripheral surface of the cylindrical portion by the biting force of the wedge member. It is in a position state. When the pushing member is pivotally operated from this state, one of the wedge members is pushed in the circumferential direction against the above urging to be removed from the biting state. As a result, the inner peripheral surface of the through hole is returned from the separated position, so that the contact portion is in contact with the inner peripheral surface of the through hole while rotating in the circumferential direction. Press the surface. As a result, the outer gear is sequentially pushed in the circumferential direction from the inner peripheral surface side of the through hole, and relatively revolves along the inner peripheral surface of the internal gear.

Next, according to a second aspect, in the first aspect described above, a plurality of contact portions formed integrally with the pushing member are set in a circumferential direction of the pushing member.
According to the second aspect of the invention, the external gear is sequentially pushed in the circumferential direction from the inner circumferential surface side of the through hole by the plurality of contact portions formed on the pushing member.

Next, in a third aspect of the present invention based on the first or second aspect described above, the abutting portion formed integrally with the pushing member has a circumferential shape against the urging force of the urging member. It is comprised as a pushing part for pushing in a direction.
According to the third invention, the wedge member is directly pushed in the circumferential direction by the contact portion formed integrally with the pushing member, and is removed from the biting state.

Next, according to a fourth aspect, in the third aspect described above, the contact portion formed integrally with the pushing member is provided in a state of entering into a recess formed in the outer peripheral surface portion of each wedge member. The wedge member is moved in the recess by the pivoting movement of the pushing member, and the wedge member is pushed in the circumferential direction against the urging force of the urging member.
According to the fourth aspect of the present invention, the wedge member is pushed out of the bite state by being directly pushed in the circumferential direction by the abutting portion of the pushing member provided in the recess formed in the outer peripheral surface portion. Is done.

Next, according to a fifth aspect of the present invention, in any one of the first to fourth aspects described above, the two rotating members that are connected to each other so as to be relatively rotatable by the connecting device are the seat back of the vehicle seat or the It is a skeleton frame for the seat cushion. This connecting device is configured to be able to adjust the backrest angle of the seat back with respect to the seat cushion by moving the both skeleton frames relative to each other or stopping the movement.
According to the fifth aspect of the invention, the connecting device functions as a reclining device for adjusting the backrest angle of the seat back of the vehicle seat.

The present invention can obtain the following effects by taking the above-described means.
First, according to 1st invention, when stopping the revolution movement of an external tooth member, a wedge member can be directly bited into the clearance gap between an external gear and an internal gear. When revolving the external tooth member, the external gear is pushed from the inside by sliding the resin contact portion formed on the push member on the inner peripheral surface of the external gear. It can be revolved. Therefore, the biting force of the wedge member for holding the revolution movement of the external tooth member in a stopped state is ensured, and the sliding movement when the external tooth member is revolved by pressing from the inside is smoothed. be able to.
Furthermore, according to the second invention, by setting a plurality of resin contact portions for revolving motion by pushing the outer tooth member in the circumferential direction of the push member, the outer tooth member is pressed. The strength can be ensured and the pushing operation can be performed stably.
Further, according to the third invention, the pushing portion for pushing the wedge member and removing the resin contact portion formed for pushing and revolving the external tooth member from the biting state. As a result, the configuration of the pushing member can be rationalized and made compact.
Furthermore, according to the fourth invention, the resin contact portion formed on the pushing member is disposed in the recess formed on the wedge member, so that the space for arranging the contact portion can be reduced. it can.
Furthermore, according to the fifth aspect, by applying the connecting device having the above-described configuration to the reclining device for a vehicle seat, it is possible to smoothly and stably adjust the backrest angle of the seat back.

  Embodiments of the best mode for carrying out the present invention will be described below with reference to the drawings. In the following embodiments, the configuration according to the coupling device of the present invention is employed as a vehicle seat reclining device.

  First, the configuration of the reclining device 4 according to the first embodiment will be described with reference to FIGS. Here, FIG. 1 shows an exploded perspective view of the reclining device 4, and FIG. 2 shows a schematic configuration of the vehicle seat 1 in a state where the reclining device 4 is assembled.

As can be seen with reference to FIG. 2, the reclining devices 4, 4 of the present embodiment are disposed in a pair of left and right sides of the vehicle seat 1, and connect the seat back 2 and the seat cushion 3, respectively. ing. The pair of reclining devices 4, 4 is configured to adjust the backrest angle of the seat back 2 or maintain the backrest angle by switching the operation state.
The operation state of the reclining devices 4 and 4 is switched by a movement of rotating the operation shafts 60 and 60 inserted through the reclining devices 4 and 4. These operation shafts 60, 60 are connected to an electric motor (not shown) disposed inside the vehicle seat 1, and a shaft rotation operation synchronized with the left and right is performed by receiving a driving force from the electric motor. It is like that. In this electric motor, for example, by performing a switching operation of a switch (not shown) disposed at a side position of the vehicle seat 1, ON / OFF switching and forward / reverse switching are performed. ing.
Here, the reclining devices 4, 4 are in a state in which the inclination angle of the seat back 2 is maintained at all times before the operation shafts 60, 60 are pivoted. The reclining devices 4 and 4 operate so as to change the backrest angle of the seat back 2 in conjunction with the movement of the operation shafts 60 and 60 when the operation shafts 60 and 60 are pivoted by the electric motor.

Hereinafter, the configuration of the reclining devices 4 and 4 will be described in detail. The reclining devices 4 and 4 have a symmetric configuration, but the substantial configuration is the same. Therefore, in the following description, only the configuration of the reclining device 4 on one side shown in FIG. 2 will be described.
The components of the reclining device 4 are shown in detail in FIG. That is, the reclining device 4 includes an inner tooth member 10, an outer tooth member 20, a pair of wedge members 30 </ b> A and 30 </ b> B, a spring member 40, a pushing member 50, an operation shaft 60, and an outer peripheral ring 70. It is configured to be assembled into one. Each of these parts is formed of a metal member, but only the pushing member 50 is formed of a resin member. Here, the spring member 40 corresponds to the biasing member of the present invention.
Hereinafter, the configuration of each component will be described in detail.

First, the configuration of the internal tooth member 10 will be described. That is, as shown in FIG. 1, the internal tooth member 10 is formed in a substantially disc shape.
The inner tooth member 10 is formed in a shape in which a disk-shaped outer peripheral edge portion protrudes in a cylindrical shape by half-punching in the plate pressure direction (axial direction). And the internal tooth 11a is formed in the internal peripheral surface of the site | part which protruded in this cylindrical shape. Thereby, the outer peripheral edge part of the internal gear member 10 is formed as an internal gear 11 protruding in a cylindrical shape.
A cylindrical cylindrical portion 12 that protrudes in the same thickness direction as the external gear 21 is formed at the center of the disk shape of the internal gear member 10. The inside of the cylinder portion 12 is formed as an insertion hole 12a penetrating in a circular shape. The axial center of the cylindrical portion 12 is concentric with the center 11r of the internal gear 11.
As shown in FIG. 3, the inner tooth member 10 is integrally connected to the seat back 2 by joining its outer plate surface to the plate surface of the back frame 2 f that forms the skeleton of the seat back 2. . Here, on the outer plate surface of the internal tooth member 10, dowels 13a and D dowels 13b are formed to protrude at a plurality of locations in the circumferential direction. The D dowel 13b is formed in a shape in which a part of the protruding shape is cut out in a D-shaped cross section, and the shape is distinguished from the dowel 13a protruding in a cylindrical shape. On the other hand, dowel holes 2a and D dowel holes 2b into which the dowels 13a and D dowels 13b can be fitted are formed through the back frame 2f. Therefore, by welding these two dowels 13a and D dowels 13b to the dowel holes 2a and D dowel holes 2b formed in the back frame 2f and joining them, the inner tooth member 10 and The back frame 2f is firmly and integrally connected.
An insertion hole 2c is formed through the back frame 2f at a position concentric with the insertion hole 12a formed in the internal tooth member 10. Here, the back frame 2f corresponds to one of the two rotating members of the present invention.

Next, returning to FIG. 1, the configuration of the external tooth member 20 will be described. The outer tooth member 20 is formed in a substantially disk shape having an outer diameter slightly larger than that of the inner tooth member 10.
Contrary to the internal tooth member 10, the outer tooth member 20 protrudes in a cylindrical shape by a half punching process in the plate thickness direction (axial direction), with the disc-shaped outer peripheral edge portion remaining. It is formed into a shape. And the outer tooth | gear 21a is formed in the outer peripheral surface of the site | part which protruded in this cylindrical shape. Thereby, the site | part of the center side of the external tooth member 20 is formed as the external gear 21 which protruded cylindrically.
A circular through-hole 22 is formed in the center of the disk shape of the external tooth member 20. The through hole 22 is formed to be larger than the outer diameter of the cylindrical portion 12 formed in the internal tooth member 10 described above. The axis of the through hole 22 is concentric with the center 21r of the external gear 21.
As shown in FIG. 3, the external tooth member 20 is integrally connected to the seat cushion 3 by joining the outer plate surface to the plate surface of the cushion frame 3 f that forms the skeleton of the seat cushion 3. . Here, referring back to FIG. 1, dowels 23 a and D dowels 23 b protrude from the outer plate surface of the external tooth member 20 at a plurality of locations in the circumferential direction. The D dowel 23b is formed in a shape in which a part of the protruding shape is cut out in a D-shaped cross section, and the shape is distinguished from the dowel 23a protruding in a cylindrical shape. On the other hand, as shown in FIG. 3, dowel holes 3a and D dowel holes 3b into which the dowels 23a and D dowels 23b can be fitted are formed through the cushion frame 3f. Therefore, by welding and joining both the plate surfaces in a state where these dowels 23a and D dowels 23b are fitted in dowel holes 3a and D dowel holes 3b formed in the cushion frame 3f, The cushion frame 3f is firmly and integrally connected.
Note that an insertion hole 3c is formed through the cushion frame 3f at a position concentric with the insertion hole 12a formed in the internal tooth member 10 described above. Here, the cushion frame 3f corresponds to the other of the two rotating members of the present invention.

As shown in FIG. 4, the external tooth member 20 is assembled to the internal tooth member 10 so that the internal plate surfaces facing the internal tooth member 10 overlap each other. Thereby, as can be seen with reference to the configuration of FIG. 1, as a state where the cylindrical portion 12 protruding from the internal tooth member 10 is inserted into the hole of the through hole 22 formed in the external tooth member 20, Both are assembled.
Specifically, as shown in FIG. 5, the external tooth member 20 has an external tooth 21 a formed on the external peripheral surface of the external gear 21 and an internal tooth formed on the internal peripheral surface of the internal gear 11 of the internal gear member 10. It is assembled as a state engaged with 11a. Therefore, in this assembled state, the center 21r of the external gear 21 and the center 11r of the internal gear 11 are arranged eccentrically with each other due to the meshing structure of both gear members.

Here, the external gear 21 has a smaller diameter than the internal gear 11 and is formed with a smaller number of teeth. Specifically, the number of teeth of the external teeth 21a formed on the external gear 21 is 33, and the number of teeth of the internal teeth 11a formed on the internal gear 11 is 34.
Therefore, by causing the external gear 21 to relatively revolve along the inner peripheral surface (internal tooth surface) of the meshed internal gear 11, the external gear member 20 and the internal gear member 10 are caused by the above-described difference in the number of teeth. The relative rotational position relationship of fluctuates. For example, the internal gear member of the external gear member 20 is caused by the relative movement in which the external gear 21 revolves in the clockwise direction while rotating (spinning) counterclockwise along the inner peripheral surface of the internal gear 11. The relative rotational position relationship with respect to 10 varies in the counterclockwise direction shown in the figure. Actually, since the external tooth member 20 is connected to the cushion frame 3f and the internal tooth member 10 is connected to the back frame 2f, the internal tooth member 10 is illustrated relative to the external tooth member 20. It will be rotated clockwise.
Accordingly, by rotating the outer gear 21 relatively along the inner peripheral surface of the internal gear 11 as described above, the backrest angle of the seat back 2 relative to the seat cushion 3 is adjusted as shown in FIG. Can be done.

Next, returning to FIG. 1, the configuration of the pair of wedge members 30A and 30B will be described. That is, the pair of wedge members 30A and 30B are formed in a frame shape that is curved in an arc shape, and are formed in symmetrical shapes. As shown in FIG. 5, the wedge members 30 </ b> A and 30 </ b> B are formed by an inner peripheral surface of the through hole 22 formed in the outer tooth member 20 and an outer peripheral surface of the cylindrical portion 12 formed in the inner tooth member 10. It is arranged at an axially symmetric position inside the gap shape which is eccentric. Here, the wedge members 30A and 30B are formed in a deflected shape in which the thickness in the radial direction becomes thinner from the upper end to the lower end in the drawing in accordance with the eccentric gap shape described above.
The wedge members 30A and 30B are normally held in a state of being sandwiched between gaps that are eccentric from each other by the biasing force of the open ring-shaped spring member 40 hooked on them. As a result, the external gear member 20 receives a pressing force due to the biting of the wedge members 30A and 30B from the inner peripheral surface of the through hole 22, and the external gear 21 is pressed against the inner peripheral surface (internal tooth surface) of the internal gear 11. In this state, the revolving motion is held down. Specifically, the wedge members 30 </ b> A and 30 </ b> B cause a biting force to act between the outer peripheral surface portion on the upper side in the figure of the cylindrical portion 12 and the inner peripheral surface portion of the through hole 22 by biting into this gap shape. As a result, the external gear 21 is pressed upward in the figure with respect to the cylindrical portion 12 (internal gear 11), and both the teeth (the external teeth 21a and the internal teeth 11a) are engaged with each other without backlash. Retained.
The wedge members 30A and 30B are removed from the biting state by one of the wedge members 30A and 30B being pushed in the circumferential direction in the circumferential direction against the bias of the spring member 40 by the pushing member 50 described later. Is done. Specifically, as shown in FIG. 6, for example, when the pushing member 50 is pivoted in the clockwise direction in the drawing, the wedge member 30A on the left side in the drawing is pushed in the same direction. As a result, the wedge member 30A on the left side is removed from the biting state, and the gap shape is vacant, so that the wedge member 30B on the right side of the drawing is also removed from the biting state. Thereby, since the external gear 21 is removed from the state pressed against the inner peripheral surface (internal tooth surface) of the internal gear 11, the external tooth member 20 is in a state capable of revolving. The wedge members 30 </ b> A and 30 </ b> B are in a state of being sandwiched in the gap shape eccentrically caused by the biasing force of the spring member 40 when the axial rotation operation of the pushing member 50 is stopped. That is, the external tooth member 20 revolves by the movement of the pushing member 50 being pivoted, and the revolving motion is restrained and held in this state by the shaft turning operation of the pushing member 50 being stopped. It has become so.

  Next, returning to FIG. 1, the spring member 40 will be described. The spring member 40 is formed in a ring shape with an end, and hooks 41A and 41B formed at the respective ends are hooked on the upper end portions of the wedge members 30A and 30B in the figure. Thus, as shown in FIG. 5, the spring member 40 urges the upper ends of the wedge members 30A and 30B in a direction to separate them from each other, and sandwiches the wedge members 30A and 30B in an eccentric gap shape. It is designed to bite into the shape.

Next, returning to FIG. 1, the pushing member 50 will be described. The pushing member 50 is formed in a thin disk shape by integral molding of resin.
The pushing member 50 is integrally formed with a cylindrical cylindrical portion 51 protruding in the thickness direction (axial direction) at the center of the disc shape. A circular fitting groove 51 a having a serrated groove surface on the inner peripheral surface is formed through the cylinder of the cylinder portion 51.
Further, the contact portions 52A and 53A and the contact portions 52B and 53B protruding in the same plate thickness direction as the cylindrical portion 51 are provided in the vicinity of the outer peripheral edge of the disk shape of the pushing member 50 along the circumferential direction. Are integrally formed. The abutting portion 52A and the abutting portion 52B are formed at positions that are axially symmetrical to each other. The contact portion 53A and the contact portion 53B are also formed at positions that are axially symmetric with respect to each other.
As can be seen with reference to FIG. 1, the pushing member 50 can be rotated by loosely fitting the cylindrical portion 51 into the insertion hole 12 a of the cylindrical portion 12 formed in the internal gear member 10. It is assembled as a state where it is pivotally supported by. The assembled state of the pushing member 50 is well represented in FIG.
Returning to FIG. 1, in the assembled state, the pressing member 50 includes the contact portions 52 </ b> A and 53 </ b> A and the contact portions 52 </ b> B and 53 </ b> B that protrude from the disk surface. Are assembled in a state of being inserted into the recesses 31A and 32A and the recesses 31B and 32B formed on the outer peripheral surface portion of the.

Here, as shown in FIGS. 5 and 6, the contact portions 52 </ b> A and 53 </ b> A and the contact portions 52 </ b> B and 53 </ b> B have through-holes 22 formed in the external tooth member 20 in the outer diameter dimension from the center portion. Is set to approximately the same size as the inner diameter. Thereby, the contact portions 52A and 53A and the contact portions 52B and 53B are always held in a position in contact with the inner peripheral surface of the through hole 22.
On the other hand, as shown in FIG. 7, the wedge members 30 </ b> A and 30 </ b> B are in contact with the inner peripheral surface of the through hole 22 in the biting state. However, as shown in FIG. 8, the wedge members 30 </ b> A and 30 </ b> B are arranged away from the inner peripheral surface of the through hole 22 by being removed from the biting state.

Returning to FIG. 1, the pushing member 50 is fitted into the fitting groove 51 a formed in the cylindrical portion 51 through the operation shaft 60 and integrated therewith. The operation shaft 60 is formed with a serrated groove surface that coincides with the fitting groove 51a on the outer peripheral surface thereof, and is inserted into the fitting groove 51a so as to be fitted integrally therewith. ing. As a result, the pushing member 50 is integrated with the operation shaft 60 and is pivotally operated.
Therefore, as shown in FIG. 5, when the wedge members 30A and 30B are in the biting state, for example, when the pushing member 50 is rotated in the clockwise direction in the figure, the wedge member 30A on the left side in the figure is The wedge members 30A (and the wedge members 30B) are removed from the biting state by being pushed by the contact portions 52A and 53A entering the recesses 31A and 32A and pushed in the same direction. Accordingly, when the shaft rotation operation in the same direction of the pushing member 50 is continuously performed from this state, the contact portions 52A and 53A and the contact portions that are in contact with the inner peripheral surface of the through hole 22 are contacted. The parts 52B and 53B sequentially press the inner peripheral surface of the through hole 22 in the circumferential direction so as to cause the external gear 21 to revolve while rotating in the circumferential direction.
That is, in the configuration of the present embodiment, when the wedge members 30A and 30B are in the biting state, the metal wedge members 30A and 30B directly bite into the metal outer tooth member 20 and the inner tooth member 10. Strong force is exerted to exert power. Then, when the wedge members 30A and 30B are removed and the external gear 21 is revolved, the resin contact portions 52A and 53A and the contact portions 52B and 53B are placed on the inner peripheral surface of the through hole 22. The sliding force can be applied to revolve the external gear 21 with a small sliding resistance.

Next, returning to FIG. 1, the outer peripheral ring 70 will be described. The outer peripheral ring 70 is formed in a cylindrical shape with a step by thin-cut hollow disk member by half-punching in the plate pressure direction (axial direction).
The outer peripheral ring 70 is formed as an inner tooth-side holding surface 71 in which a portion surface on the inner peripheral edge side is brought into contact with a portion surface on the outer peripheral edge side of the outer plate surface of the inner tooth member 10. Then, as shown in FIG. 4, the part surface on the outer peripheral side of the outer peripheral ring 70 is an outer tooth side holding surface 72 that is caulked so as to contact the part surface on the outer peripheral side of the outer plate surface of the outer tooth member 20. Is formed.
Therefore, the outer ring 70 is clamped and fixed so as to sandwich the inner tooth member 10 and the outer tooth member 20 so as not to move apart in the plate pressure direction. It is held as a state.

Subsequently, a method of using the present embodiment will be described.
That is, as shown in FIG. 5, the reclining device 4 always pushes the revolving motion of the external gear 21 by the biting force of the wedge members 30 </ b> A and 30 </ b> B before the shaft rotation operation of the operation shaft 60 is performed. It is held in a stopped state. Therefore, in this state, as shown in FIG. 2, the backrest angle of the seat back 2 is maintained as maintained.
Then, as shown in FIG. 6, when the operation shaft 60 is pivoted, for example, in the clockwise direction in the drawing, the wedge member 30A on the left side in the drawing is pushed and removed from the biting state. Accordingly, the right wedge member 30B is also removed from the biting state. Then, along with this movement, the outer gear 21 is pressed from the inside to relatively revolve along the inner peripheral surface (inner tooth surface) of the internal gear 11, so as shown in FIG. By this movement, the backrest angle of the seat back 2 is adjusted.
Then, since the wedge members 30A and 30B are engulfed again by stopping the shaft rotation operation of the operation shaft 60, the revolution movement of the external gear 21 is again restrained and the seat back 2 The backrest angle is held at the adjusted position.

Thus, according to the reclining device 4 of the present embodiment, when stopping the revolving motion of the external tooth member 20 (external gear 21), the wedge members 30A and 30B are placed between the external gear 21 and the internal gear 11. It can bite directly into the gap. When the external tooth member 20 is revolved, the contact portions 52A and 53A and the contact portions 52B and 53B formed on the resin-made pushing member 50 are replaced with the through holes formed in the external tooth member 20. By sliding on the inner peripheral surface of 22, the external gear 21 can be pushed and revolved from the inside. Therefore, the biting force of the wedge members 30A and 30B for holding the outer tooth member 20 in a stopped state is secured, and sliding is performed when the outer tooth member 20 is pressed from the inside to make the revolving motion. The movement can be smoothed.
Further, as a configuration for pushing the external tooth member 20, a plurality of contact portions 52 </ b> A and 53 </ b> A and contact portions 52 </ b> B and 53 </ b> B are set in the circumferential direction of the push member 50. The strength for pressing can be ensured, and the pushing operation can be performed stably.
Further, the abutting portions 52A, 53A and the abutting portions 52B, 53B are also configured as pushing portions for pushing the wedge members 30A, 30B to remove them from the biting state, so that the structure of the pushing member 50 is configured. It can be streamlined and made compact.
Further, the contact portions 52A, 53A and the contact portions 52B, 53B are disposed in the recesses 31A, 32A and the recesses 31B, 32B formed in the wedge members 30A, 30B, so that the contact portions 52A, 53A and The arrangement space of the contact portions 52B and 53B can be reduced.
Further, by applying the connecting device as the vehicle seat reclining device 4 as in the present embodiment, the backrest angle of the seat back 2 can be adjusted smoothly and stably.
Furthermore, since the pushing member 50 is formed in a large disk shape so as to cover the assembly members such as the wedge members 30A and 30B from the outside, the grease applied to each operating part is less likely to leak to the outside. Can be protected.

As mentioned above, although the embodiment of the present invention has been described using one example, the present invention can be implemented in various forms in addition to the above example.
For example, although the example which employ | adopted the connection apparatus of this invention as a reclining apparatus was shown in the said Example, it can also be employ | adopted for another connection apparatus. That is, it can also be employed as a connecting device other than the reclining device that is positioned between two rotating members that are disposed so as to be rotatable relative to each other and connects them.
Further, the external gear may be formed with more teeth than the internal gear. In this case, with the relative revolution of the external gear, the external tooth member rotates relative to the internal tooth member in the direction opposite to the direction shown in the above embodiment.
Further, although the spring member is shown as the urging member that urges the wedge member in the biting direction, a member that exhibits other elastic urging force such as a rubber member can also be applied.
Moreover, although what formed the whole pressing member by integral molding of resin was shown, the contact part which gives a pressing force to an external gear should just be resin. Moreover, although what comprised the contact part as a pushing part for removing a wedge member from a biting state was shown, the structure which provided the pushing part separately may be sufficient. Further, although there may be one contact portion, in this case, it is necessary to have a certain strength so as to ensure a pressing force against the external gear. Moreover, although what showed the contact part arrange | positioned in the recessed part of a wedge member was shown, you may arrange | position so that the edge part of a wedge member may be pushed.

1 is an exploded perspective view of a reclining device according to Embodiment 1. FIG. It is a schematic block diagram of a vehicle seat. It is a perspective view showing the attachment structure to the vehicle seat of a reclining device. It is the IV-IV sectional view taken on the line of FIG. 5 showing the internal structure of the reclining apparatus. FIG. 5 is a cross-sectional view taken along line VV in FIG. 3 showing the internal structure of the reclining device. It is a block diagram showing the state from which the wedge member of the wedge member was removed from the state of FIG. It is the schematic diagram which expanded and represented the biting state of the wedge member of FIG. It is the schematic diagram which expanded and represented the state from which the wedge member of FIG. 6 was removed from the biting state.

Explanation of symbols

1 seat 2 seat back 2f back frame (one of two rotating members)
2a Dowel hole 2b D Dowel hole 2c Insertion hole 3 Seat cushion 3f Cushion frame (the other of the two rotating members)
3a Dowel hole 3b D Dowel hole 3c Insertion hole 4 Reclining device (connecting device)
DESCRIPTION OF SYMBOLS 10 Internal tooth member 11 Internal gear 11a Internal tooth 11r Center 12 Tube part 12a Insertion hole 13a Dowel 13b D Dowel 20 External tooth 21 External gear 21a External tooth 21r Center 22 Through-hole 23a Dowel 23b D Dowel 30A, 30B Wedge member 31A 31B Concave part 32A, 32B Concave part 40 Spring member 41A, 41B Hanging part 50 Pushing member 51 Cylindrical part 51a Fitting hole 52A, 52B Abutting part 53A, 53B Abutting part 60 Operation shaft 70 Outer ring 71 Inner tooth side holding surface 72 External tooth holding surface

Claims (5)

A connecting device that is located between two rotating members arranged to be rotatable relative to each other and connects them,
An internal gear member integrally connected to one of the two rotating members and integrally having an internal gear formed in a cylindrical shape;
An external gear member integrally formed with a cylindrically protruding external gear provided in mesh with an internal gear formed on the internal gear member and connected to the other of the two rotating members; Have
The external gear formed on the external gear member is smaller in diameter than the internal gear formed on the internal gear and has a different number of teeth, and the internal gear of the internal gear meshing with the external gear. By relatively revolving along the surface, the two rotating members relatively rotate due to the difference in the number of teeth of both gears,
A through-hole penetrating in the axial direction is formed in the central portion of the external gear, and a cylindrical tube portion that is inserted into the through-hole formed in the external gear protrudes from the central portion of the internal gear. The through-hole formed in the external gear and the cylindrical portion formed in the internal gear are arranged in an eccentric relationship with each other by the meshing structure of both gears, and the inner peripheral surface of the through-hole A pair of wedge members are arranged in the axially symmetrical position inside the eccentric gap shape between the outer peripheral surface of the cylindrical portion,
The pair of wedge members are normally sandwiched between the eccentric gap shapes by the urging force of the urging members hooked on them, so that the external gear surfaces of the external gears become the internal gear surfaces of the internal gears. Pushing operation is performed in the circumferential direction in the circumferential direction by rotating the shaft of the pushing member inserted into the through-hole against one of the wedge members. By doing so, the outer gear is sequentially pushed in the circumferential direction from the inner peripheral surface side of the through hole, and relatively revolves along the inner tooth surface of the inner gear,
The push member is integrally formed with a resin contact portion that can contact an inner peripheral surface of a through hole formed in the external gear, and the resin contact portion is formed by the pair of the contact portions. When the wedge member is in a state of biting into the gap shape, the inner peripheral surface of the through hole is pulled away from the outer peripheral surface of the cylindrical portion by the biting force of the wedge member, so that the wedge member is separated from the inner peripheral surface of the through hole. One wedge member is pushed in the circumferential direction by the pushing member and removed from the biting state, so that the contact portion comes into contact with the inner peripheral surface of the through hole. A connecting device characterized in that the inner peripheral surface of the through-hole is pressed while rotating in the circumferential direction. The connecting device according to claim 1,
A connecting device, wherein a plurality of contact portions formed integrally with the push member are set in a circumferential direction of the push member. The coupling device according to claim 1 or 2,
The contact portion formed integrally with the push member is configured as a push portion for pushing the wedge member in the circumferential direction against the urging force of the urging member. Feature coupling device. The connecting device according to claim 3,
The abutment portion formed integrally with the push member is provided in a state of entering into a recess formed in the outer peripheral surface portion of each wedge member, and is moved by rotating the push member about its axis. A coupling device characterized in that the wedge member moves in a recess and pushes the wedge member in a circumferential direction against the urging force of the urging member. The connecting device according to any one of claims 1 to 4,
Two rotating members that are connected to each other so as to be relatively rotatable by the connecting device are respectively a frame of a seat back of the vehicle seat or a seat cushion,
A connecting device characterized in that the backrest angle of the seat back with respect to the seat cushion can be adjusted by a movement of rotating both the frame frames or stopping the movement thereof.

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