JP4720660B2 - Connecting device - Google Patents

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.

2. Description of the Related Art Conventionally, some seats for vehicle seats are provided with a reclining device that can adjust the backrest angle of the seat back. For example, the following Patent Document 1 discloses a reclining device that can adjust the inclination angle of the seat back with respect to the seat cushion. In this disclosure, a pair of reclining devices are disposed on both sides in the width direction of the seat, and the inclination angle of the seat back can be adjusted steplessly with the synchronized movement of each reclining device. .
More specifically, the reclining device can rotate a gate-type back frame that forms the skeleton of the seat back and a frame-shaped cushion frame that forms the skeleton of the seat cushion, respectively, on both sides in the width direction. It is connected. In these reclining devices, a disk-shaped inner tooth member and an outer tooth member are assembled such that the disk surfaces overlap each other. Here, the internal gear is formed with an internal gear that protrudes in a cylindrical shape from the disk surface facing the external gear. On the other hand, the external gear is formed with an external gear that protrudes from a disk surface facing the internal gear so as to be able to mesh with the internal gear of the internal gear. The external gear member is configured to revolve along the inner peripheral shape of the internal gear by engaging the external gear with the internal gear of the internal gear member. 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 revolving the external gear inside the internal gear, the seat back can be tilted relative to the seat cushion due to the difference in the number of teeth.
By the way, the above-mentioned revolving motion of the external gear is performed in accordance with the rotation of the shaft pin inserted through the both members in the thickness direction. The shaft pin is inserted through the central shaft of the internal gear, and the external gear meshing with the internal gear is inserted at a position eccentric from the central shaft. Here, the internal tooth member is formed with an insertion hole through which the shaft pin can be inserted, and a cylindrical portion protruding from the disk surface along the peripheral shape of the insertion hole is formed. . In addition, a through hole is formed in the outer tooth member so as to surround a cylindrical portion formed in the inner tooth member. This through hole is formed around the central axis of the external gear, and has an eccentric relationship with the cylindrical portion (insertion hole) formed in the internal gear member. In the gap formed between the cylindrical portion formed in the internal tooth member and the through hole formed in the external tooth member, a pair of wedge members are disposed to fill the gap between the two. Here, the wedge members are disposed as a pair on both sides so as to surround the periphery of the cylindrical portion. These wedge members are pushed and moved in the rotation direction when the shaft pin is pivoted by a pushing member assembled integrally with the shaft pin. As a result, the wedge member revolves the external tooth member while pressing the inner peripheral surface of the through-hole like a rotating cam in accordance with the rotation of the wedge member.
Here, each wedge member is urged in a direction in which the wedge members are attracted to each other by a spring member. As a result, each wedge member is inserted into a narrow gap between the outer peripheral surface of the cylindrical portion and the inner peripheral surface of the through hole by the above-described biasing before the shaft pin is rotated. The biting state is maintained, and the backlash between the internal tooth member and the external tooth member is reduced. Then, when the shaft pin is rotated in this biting state, one wedge member is pushed in the direction opposite to the biting direction by the pushing member, and the one biting state is released. As the shaft pin continues to rotate, both wedge members are pushed and moved following the rotation of the shaft pin.
JP 2002-119352 A

  However, since the wedge member is held in the biting state with the biasing force of the spring member in the technique disclosed in Patent Document 1, when the biting state is released by the pivoting operation of the shaft pin, the stick sound or the May generate vibration.

  The present invention was devised as a solution to the above-described problem, and the problem to be solved by the present invention is to allow the wedge member disposed in the coupling device to be gently released from the biting state. There is.

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 disposed so as to be relatively rotatable with respect to each other and that connects them. A disk-shaped internal tooth member connected to one of the two rotating members, and a disk-shaped external tooth member assembled in such a manner that the inner tooth member and the disk surface overlap each other and connected to the other of the two rotating members And have. The internal gear member is formed with an internal gear that protrudes in a cylindrical shape from the disk surface facing the external gear member and has internal teeth on the inner peripheral surface thereof. The external tooth member is formed with an external gear that protrudes in a cylindrical shape from a disk surface facing the internal tooth member and has external teeth on the outer peripheral surface thereof. The external gear has a smaller diameter than the internal gear and has a different number of teeth. The external gear is relatively revolved along the inner peripheral surface in a state in which the external gear is engaged with the internal gear, whereby both gears are The two rotating members can be relatively rotated by the difference in the number of teeth. The relative revolving motion of the external gear is performed with the rotation of the shaft pin inserted through the inner tooth member and the outer tooth member in the plate thickness direction. The shaft pin is inserted through an insertion hole formed around the center axis of the internal gear of the internal gear member. The internal tooth member is formed with a cylindrical portion protruding in a cylindrical shape from the disk surface along the peripheral shape of the insertion hole. A through hole is formed in the outer tooth member so as to surround the outer peripheral edge of the cylindrical portion formed in the inner tooth member. The through hole is formed around the central axis of the external gear, and has a disposition relationship eccentric to the cylindrical portion formed on the internal gear member. In the gap formed between the inner peripheral surface of the through-hole formed in the outer tooth member and the outer peripheral surface of the cylindrical portion formed in the inner tooth member, a pair of wedge members are used as members to fill a part of the gap. It is arranged. The pair of wedge members are opposed to each other so as to surround the outer peripheral surface of the cylindrical portion, and the outer peripheral surface of the cylindrical portion and the inner peripheral surface of the through hole are urged by a spring member provided between the two wedge members. The outer gear is pressed against the inner peripheral surface of the internal gear. The pair of wedge members is formed by pressing one wedge member in a direction opposite to the biting direction when the shaft pin is pivoted by the push member integrally assembled in the pivot direction with the shaft pin. The biting state of the member is released, and the other wedge member is also pushed and moved following this rotation to relatively revolve the external tooth member while pressing the inner peripheral surface of the through hole formed in the external tooth member. It is like that. The pushing structure to the wedge member by the pushing member energizes the spring member that urges the wedge member in the biting direction first as the pushing member rotates in the pushing direction. Stepwise, pressing in the release direction releases the urged state of the wedge member, and the pusher member pushes the released wedge member released from the urged state in a direction opposite to the biting direction by further rotation. It has a push-motion structure.
According to the first invention, the pair of wedge members are sandwiched between the narrowing gap between the through hole and the cylindrical portion by the biasing force of the spring member at all times before the shaft pin is rotated. Is kept in a state of being engulfed. Therefore, the external gear is pressed against the inner peripheral surface of the internal gear by this biting force, and is held in a state in which the backlash between the two is reduced. The biting state of the wedge member is released when one wedge member is pushed in a direction opposite to the biting direction by the pushing member that rotates integrally with the shaft pin. The release state of the wedge member is performed in a state in which the urging state by the spring member is released along with the rotation of the pushing member in the pushing direction.

Next, the second invention is the first invention described above, wherein the wedge member pushing structure by the pushing member is recessed in the axial length direction along the pushing direction of the pushing member formed on the wedge member. A hook portion of the spring member is hung in the elongated hole, and the spring member hung in the long hole is arranged in a manner protruding from the long hole in the axial direction of the wedge member. Is pressed against the end opposite to the pushing direction of the long hole, and the wedge member is urged in the biting direction, and the outer side in the radial direction formed on the pushing member when the shaft pin rotates. When the spring pressing part protruding in the direction abuts against the spring member protruding in the axial direction of the wedge member and pushes it in the rotating direction, the urging state of the wedge member by the spring member is released, and the pushing The hook portion of the moved spring member comes into contact with the end portion of the long hole in the pushing direction, so that a wedge is formed. Wood has a structure which is pushed in the direction opposite to the direction bite becomes integral with the spring member.
According to the second aspect of the present invention, when the shaft pin is pivoted, the spring pressing portion previously formed on the pressing member pushes the spring member to release the urging state on the wedge member. As the rotation further proceeds, the hooked portion of the spring member is brought into contact with the end of the elongated hole in the pushing direction. Thereby, with the rotation of the pushing member, the wedge member is pushed together with the spring member in a state where the urging state by the spring member is released, and the biting state is released.

Next, according to a third invention, in the first invention described above, the pushing structure of the wedge member by the pushing member is recessed in the axial length direction along the pushing direction of the pushing member formed on the wedge member. A hook portion of the spring member is hung in the elongated hole, and the spring member hung in the long hole is arranged in a manner protruding from the long hole in the axial direction of the wedge member. Is pressed against the end opposite to the pushing direction of the long hole, and the wedge member is urged in the biting direction, and the outer side in the radial direction formed on the pushing member when the shaft pin rotates. The spring pressing portion of the shape protruding in the direction abuts against the spring member protruding in the axial length direction of the wedge member and pushes it in the rotating direction, thereby releasing the urging state of the wedge member by the spring member. The wedge-shaped pushing part with a shape protruding outward in the radial direction formed on the pushing member It has a structure which is pushed in the direction opposite to the direction member and the pressing direction abuts on-released wedge member energized state bite.
According to the third aspect of the present invention, when the shaft pin is pivoted, the spring pressing portion previously formed on the pressing member pushes the spring member to release the urging state on the wedge member. As the rotation further proceeds, the wedge pressing portion formed on the pushing member comes into contact with the wedge member in the pushing direction. Thereby, with the rotation of the pushing member, the wedge member is pushed together with the spring member in a state where the urging state by the spring member is released, and the biting state is released.

Next, according to a fourth aspect of the present invention, in any one of the first to third aspects described above, the one rotating member connected to the internal gear member serves as a skeleton of the seat back of the vehicle seat or the seat cushion. The other rotating member connected to the external tooth member is a frame member forming the other skeleton of the seat back of the vehicle seat or the seat cushion, and the seat according to the relative rotation of the both frame members. It is adopted as a reclining device that can adjust the backrest angle of the seat back with respect to the cushion.
According to the fourth invention, the connecting device according to any one of the first to third inventions described above is employed as a reclining device for adjusting the backrest angle of the vehicle seat.

The present invention can obtain the following effects by taking the above-described means.
First, according to the first invention, the biting state of the wedge member can be gently released by releasing the biting state of the wedge member in a state where the biasing state by the spring member is released.
Furthermore, according to the second invention, the first member described above can be realized relatively easily by adopting a configuration in which the wedge member is pushed using the force of the spring member being pushed by the pushing member. Can be
Further, according to the third invention, the spring pressing portion is first brought into contact with the spring member as the rotation of the pressing member progresses, and the wedge pressing portion is changed to the wedge member by further progress of the subsequent rotation. By adopting the structure of contacting, the first invention described above can be realized relatively easily.
Further, according to the fourth invention, the backrest angle of the seat back is suitably adjusted by employing the connecting device according to any one of the first to third inventions as a reclining device for a vehicle seat. be able to.

  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 diagram of the seat 1 on which the reclining device 4 is assembled.

Referring to FIG. 2, the reclining devices 4, 4 of the present embodiment are disposed in a pair on both sides in the width direction of the vehicle seat 1, and connect the seat back 2 and the seat cushion 3. Yes. The pair of reclining devices 4 and 4 can be switched between a state in which the backrest angle of the seat back 2 can be adjusted and a state in which the backrest angle can be maintained.
This switching is performed in accordance with the rotational movement of the shaft pins 60 and 60 inserted into the reclining devices 4 and 4. The shaft pins 60, 60 are connected to an electric motor (not shown) disposed inside the seat 1, and a rotating operation synchronized with the left and right is performed by receiving a driving force from the electric motor. ing. This electric motor can be switched between ON / OFF and normal / reverse rotation by a switching operation of a switch (not shown) disposed at a position such as a side portion of the seat 1, for example.
Here, the reclining devices 4 and 4 are always held in a state in which the inclination angle of the seat back 2 can be held before the rotation of the shaft pins 60 and 60 is performed by the electric motor. . And each reclining device 4 and 4 adjusts the backrest angle of the seat back 2 with the rotational movement of each axial pin 60 and 60, when each axial pin 60 and 60 is rotated by an electric motor. It has come to be.

Next, the configuration of the reclining devices 4 and 4 will be described in detail. Although the reclining devices 4 and 4 are formed symmetrically with each other, the substantial configuration is the same. Therefore, in the following description, the one side reclining device 4 shown in FIG. 2 will be described.
That is, as shown in FIG. 1, 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, and a shaft pin 60. And the outer peripheral ring 70 are assembled into one. Each of these members is formed of a metal member.
Hereinafter, the configuration of each member will be described in detail.

First, the internal tooth member 10 will be described. That is, the internal tooth member 10 is formed in a disk shape as shown in FIG.
The inner tooth member 10 is formed so that the outer peripheral edge of the disk shape protrudes in a cylindrical shape toward the outer tooth member 20 by half punching in the axial length direction. And the internal tooth 11a is formed in the internal peripheral surface of this cylindrical protrusion part. Thereby, the cylindrical protrusion part is formed as the internal gear 11.
An insertion hole 12a through which the shaft pin 60 can be inserted in the axial length direction is formed in the central portion of the internal tooth member 10. The insertion hole 12 a is formed so as to penetrate in the plate thickness direction of the internal gear member 10, and the center thereof is concentric with the center 11 r of the internal gear 11.
And the cylindrical part 12 of the shape which the peripheral part of the penetration hole 12a protruded cylindrically toward the external tooth member 20 by the half punching process to an axial length direction is formed in the internal tooth member 10. As shown in FIG.
Here, FIG. 3 shows an attachment structure of the reclining device 4 to the seat back 2 and the seat cushion 3. As shown in the figure, dowels 13a and D dowels 13b are formed on the outer disk surface of the inner tooth member 10 in a circumferential direction at positions spaced radially outward from the insertion hole 12a. Yes. These dowels 13a and D dowels 13b are formed so as to project in the axial length direction from the outer disk surface by half punching in the axial length direction of the internal tooth member 10. These dowels 13a and D dowels 13b are fitted into corresponding dowel holes 2a and D dowel holes 2b formed in the back frame 2f constituting the skeleton of the seat back 2, respectively. The back frame 2f is also formed with an insertion hole 2c through which the shaft pin 60 can be inserted on the same axis as the insertion hole 12a formed in the internal tooth member 10. Here, the D dowel 13b is formed in a shape in which a part of a cylindrical shape is cut out in a D-shaped cross section, and the shape is distinguished from the cylindrical dowel 13a. As a result, the internal gear member 10 is always fitted in the back frame 2f in a predetermined orientation and can be integrally joined. In joining the inner tooth member 10 and the back frame 2f, the dowels 13a and D dowels 13b are fitted in a state where the outer disk surface of the inner tooth member 10 and the plate surface of the back frame 2f are in surface contact. The part is arc welded. The joined state between the internal gear member 10 and the back frame 2f is shown in detail in FIG. Here, the back frame 2f corresponds to one of the two rotating members of the present invention.

Next, the external tooth member 20 will be described. That is, returning to FIG. 1, the external tooth member 20 is formed in a disk shape.
The outer tooth member 20 is formed such that a central portion of the outer peripheral edge of the disk shape protrudes in a cylindrical shape toward the inner tooth member 10 by half punching in the axial length direction. And the outer tooth | gear 21a is formed in the outer peripheral surface of this cylindrical protrusion part. Thereby, the cylindrical protrusion part is formed as the external gear 21.
A through hole 22 that penetrates in the thickness direction is formed at the center of the external tooth member 20. The inner diameter dimension of the through hole 22 is larger than the outer diameter dimension of the cylindrical portion 12 formed in the inner tooth member 10. The through-hole 22 is arranged in a state of surrounding the outer peripheral edge of the cylindrical portion 12 in a state where the outer tooth member 20 is assembled so that the disk surfaces of the inner tooth member 10 and each other overlap each other. The center of the through-hole 22 is concentric with the center 21r of the external gear 21, and is in an arrangement relationship that is eccentric to the cylindrical portion 12 described above.
Here, as shown in the figure, dowels 23a and D dowels 23b are formed in the circumferential direction on the outer peripheral edge of the outer disk surface of the external tooth member 20. The dowels 23a and D dowels 23b have substantially the same configuration as the dowels 13a and D dowels 13a described in the internal tooth member 10. Therefore, detailed description thereof will be omitted. As shown in FIG. 3, the dowels 23 a and D dowels 23 b are respectively fitted into corresponding dowel holes 3 a and D dowel holes 3 b formed in the cushion frame 3 f forming the skeleton of the seat cushion 3. . The cushion frame 3f is also formed with an insertion hole 3c through which the shaft pin 60 can be inserted on the same axis as the insertion hole 12a formed in the internal tooth member 10. Thereby, the external tooth member 20 is fitted and integrally joined to the cushion frame 3f. The joined state between the external tooth member 20 and the cushion frame 3f is shown in detail in FIG. Here, the cushion frame 3f corresponds to the other of the two rotating members in the present invention.

Here, FIG. 5 shows the internal structure of the reclining device 4 in the assembled state. As shown in the figure, 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.
Accordingly, the external tooth member 20 revolves relatively along the inner peripheral surface in a state where the external gear 21 is engaged with the internal gear 11, so that the internal tooth is regenerated every time due to the difference in the number of teeth. The positional relationship in the rotation direction with respect to the member 10 is shifted. Specifically, the positional relationship described above is shifted in the same direction as the rotational direction of the external gear 21. That is, in FIG. 5, for example, the external gear 21 is relatively moved (relatively revolved) in the clockwise direction along the inner peripheral surface while being rotated counterclockwise along the inner peripheral surface of the internal gear 11. Thus, the outer tooth member 20 can be rotated relative to the inner tooth member 10 in the counterclockwise direction. Actually, the external tooth member 20 is attached to the cushion frame 3f, and the internal tooth member 10 is attached to the back frame 2f. It will be rotated in the direction of rotation.

Next, the pair of wedge members 30A and 30B will be described. That is, returning to FIG. 1, the pair of wedge members 30 </ b> A and 30 </ b> B are formed as frame-shaped members that are curved in an arc shape, and are formed in symmetrical shapes. These wedge members 30 </ b> A and 30 </ b> B are disposed in a gap formed between the inner peripheral surface of the through hole 22 formed in the external tooth member 20 and the outer peripheral surface of the cylindrical portion 12 formed in the internal tooth member 10. Is done. Therefore, a part of the gap is filled by the arrangement of the wedge members 30A and 30B. As shown in FIG. 5, the wedge members 30 </ b> A and 30 </ b> B are disposed so as to face the positions on both the left and right sides so as to surround the outer peripheral surface of the cylindrical portion 12.
Here, returning to FIG. 1, each wedge member 30 </ b> A, 30 </ b> B is formed in a tapered shape in which the radial thickness gradually decreases from the upper part to the lower part in the drawing.
Further, in the vicinity of the upper ends of the wedge members 30A and 30B, elongated holes 31A and 31B having a shape recessed in the axial length direction along the arc shape (along the pressing direction of the pressing member 50 described later). Are formed respectively. Hanging portions 41A and 41B of a spring member 40, which will be described later, are hooked in the long holes 31A and 31B, respectively.

Next, the spring member 40 will be described. That is, returning to FIG. 1, the spring member 40 is formed in a curved shape like an end ring, and the hanging portions 41 </ b> A and 41 </ b> B formed at both ends thereof are formed in the wedge members 30 </ b> A and 30 </ b> B. The holes 31A and 31B are respectively hooked. Here, the spring member 40 is arranged in such a manner that hooks 41A and 41B hooked in the long holes 31A and 31B protrude in the axial length direction of the wedge members 30A and 30B. Thereby, the ring-shaped part of the spring member 40 is in a state of floating in the axial length direction with respect to the wedge members 30A and 30B.
With reference to FIG. 5, the spring member 40 urges the upper end portions of the wedge members 30 </ b> A and 30 </ b> B in a direction to separate them from each other. Here, the spring member 40 is configured so that the hook portions 41A and 41B hooked in the long holes 31A and 31B of the wedge members 30A and 30B are positioned at the lower end portions of the long holes 31A and 31B in the paper (pushing direction). The above-mentioned urging force is applied to each wedge member 30A, 30B by pressing against each of the wedge members 30A, 30B. Accordingly, the wedge members 30A and 30B are guided by the shape of the gap between the outer peripheral surface of the cylindrical portion 12 and the inner peripheral surface of the through hole 22, and are biased in a direction in which their lower end portions are attracted to each other. Yes. As a result of this urging, each wedge member 30A, 30B eats the tapered lower end portion into a narrow gap between the outer peripheral surface of the cylindrical portion 12 and the inner peripheral surface of the through hole 22. It is held in a state where it is inserted.
In the state where these wedge members 30A and 30B are bitten, the pressing force for pushing the inner peripheral surface of the through hole 22 in the lower side of the paper surface of the through-hole 22 to the lower outer surface of the cylindrical portion 12 in the paper surface. Act. However, on the other hand, since the upper end portions of the wedge members 30A and 30B are interposed between the outer peripheral surface on the upper side in the paper surface of the cylindrical portion 12 and the inner peripheral surface on the upper side in the paper surface of the through hole 22, Pushing inward and downward is suppressed. Therefore, combined with the above action, the wedge members 30 </ b> A and 30 </ b> B are held in a state of being sandwiched in a narrowing gap between the outer peripheral surface of the cylindrical portion 12 and the inner peripheral surface of the through hole 22. As a result, the external gear 21 is pressed against the inner peripheral surface of the internal gear 11, and the backlash between the two is suppressed.

Next, the pushing member 50 will be described. That is, returning to FIG. 1, the pushing member 50 includes a cylindrical fitting tube portion 51 into which the shaft pin 60 can be inserted, and a part of the notch that extends outward in the radial direction at one end in the axial length direction. The disc-shaped wings 52 are formed into an integrated shape.
The former fitting cylinder portion 51 is serrated on the inner peripheral surface thereof and matches the serration applied on the outer peripheral surface of the shaft pin 60. Therefore, when the shaft pin 60 is inserted into the fitting cylinder portion 51, the pushing member 50 and the shaft pin 60 are integrally assembled in the rotation direction.
The latter wing part 52 has a part of the disk-shaped part of which is notched, and each hook part 41A, 41B of the spring member 40 is hooked into the long holes 31A, 31B of the wedge members 30A, 30B. It is formed as spring pressing parts 52A and 52B for pushing and moving. As shown in FIG. 5, the end surfaces of the spring pressing portions 52 </ b> A and 52 </ b> B are contact surfaces that come into contact with the respective hook portions 41 </ b> A and 41 </ b> B of the spring member 40. These contact surfaces are formed so as to face the rotation direction of the pushing member 50.
The wing portion 52 described above is disposed at a position between the hook portions 41 </ b> A and 41 </ b> B of the spring member 40. Therefore, for example, when the shaft pin 60 is rotated in the clockwise direction in the drawing, the pushing member 50 is also rotated in the clockwise direction integrally therewith. As a result, the contact surface of the spring pressing portion 52 </ b> A, which is the left end of the wing portion 52 in the drawing, contacts the left hanging portion 41 </ b> A of the spring member 40. Further, as the rotation of the shaft pin 60 further proceeds, as shown in FIG. 6, the left hook 41A is pressed by the spring pressing portion 52A, thereby lowering the long hole 31A on the lower side in the drawing. The contact state with the end portion is removed. Thereby, the biased state of the left wedge member 30A by the spring member 40 is released. Further, as the rotation of the shaft pin 60 further proceeds, as shown in FIG. 7, the left hook 41A is further pushed and moved to move inside the long hole 31A, and the upper side of the long hole 31A in the drawing surface. It contacts with the edge part (the edge part in the pushing direction). Therefore, when the rotation of the shaft pin 60 further proceeds from this state, the left wedge member 30A is integrated with the hook 41A and pushed in the direction opposite to the biting direction. Accordingly, the left wedge member 30A is pushed in a state where the biased state by the spring member 40 is released, and the biting state is released by this pushing. Then, as the turning operation of the shaft pin 60 further proceeds, the pushing member 50 turns while pushing the left wedge member 30A. Accordingly, the right wedge member 30B moves in the clockwise direction following the movement in which the left wedge member 30A is pushed clockwise around the pushing member 50 by the biasing force of the spring member 40. Go. Then, the rotation of the both wedge members 30A and 30B in the clockwise direction causes the inner peripheral surface of the through hole 22 formed in the outer tooth member 20 to be pushed outward by the rotation cam. It is pushed and moved in order in the clockwise direction. As a result, the external gear member 20 rotates in the counterclockwise direction while the external gear 21 is engaged with the internal gear 11, and rotates in the clockwise direction along the inner peripheral surface of the internal gear 11. Revolves around.
The wedge members 30 </ b> A and 30 </ b> B are narrowed again between the outer peripheral surface of the cylindrical portion 12 and the inner peripheral surface of the through-hole 22 by the biasing force of the spring member 40 when the rotation operation of the shaft pin 60 is stopped. It enters the gap and becomes a biting state, and is held in this state.

Next, the outer peripheral ring 70 will be described. That is, returning to FIG. 1, the outer peripheral ring 70 is formed in a cylindrical shape having a step by thinly punching a thin plate-like disk member in the axial length direction. The outer peripheral ring 70 is formed as an inner holding surface 71 whose inner edge surface is brought into contact with the peripheral edge portion of the outer disk surface of the internal tooth member 10.
Here, the assembled state of the outer peripheral ring 70 is shown in FIG. As shown in the figure, the outer peripheral ring 70 is assembled in such a manner that the outer tooth member 20 and the inner tooth member 10 are assembled so that the inner disk surfaces overlap each other. Assemble in the long direction). Specifically, the outer peripheral ring 70 has the inner holding surface 71 in contact with the peripheral edge of the outer disk surface of the inner tooth member 10, and the outer edge side surface thereof is radially inward by caulking. It is bent. Thereby, the above-described bent part surface is formed as an outer holding surface 72 that is brought into contact with the peripheral edge portion of the outer disk surface of the external tooth member 20.
The outer holding surface 72 has an area that is brought into contact with the peripheral edge by the relative revolution position of the outer tooth member 20 in relation to the outer tooth member 20 having a smaller diameter than the inner tooth member 10. Change.

Subsequently, a method of using the present embodiment will be described.
Here, referring to FIG. 5, in the reclining device 4, the wedge members 30 </ b> A and 30 </ b> B are always connected to the outer peripheral surface of the cylindrical portion 12 and the inner periphery of the through hole 22 before the rotation operation of the shaft pin 60 is performed. It is held in a state of being caught in a narrow gap between the surfaces. In this state, the external gear 21 is pressed against the inner peripheral surface of the internal gear 11. That is, as shown in FIG. 2, the backrest angle of the seat back 2 with respect to the seat cushion 3 is maintained. Note that, in the initial state, the seat back 2 is held in an upright position with respect to the seat cushion 3, as indicated by a solid line in FIG.
Therefore, in order to adjust the backrest angle of the seat back 2, the shaft pin 60 is rotated by operating a switch (not shown). For example, returning to FIG. 5, when the shaft pin 60 is rotated in the clockwise direction in the drawing, the wedge member 30 </ b> A disposed on the left side in the drawing is pushed by the pushing member 50, and the biting state is changed. Canceled. At this time, the wedge member 30A is released from the biting state in a state where the urging state by the spring member 40 is released. Thereby, along with the turning operation of the shaft pin 60, the external tooth member 20 rotates in the clockwise direction along the inner peripheral surface of the internal gear 11 of the internal tooth member 10 while rotating in the counterclockwise direction. Revolves relatively in the direction. With this relative revolution, the external tooth member 20 rotates in the counterclockwise direction relative to the internal tooth member 10. However, actually, since the external tooth member 20 is attached to the cushion frame 3f and the internal tooth member 10 is attached to the back frame 2f, the internal tooth member 10 is relatively clockwise with respect to the external tooth member 20. It will be rotated in the direction of rotation. As a result, as indicated by the phantom line in FIG. 2, the seat back 2 is tilted backward from the standing posture position indicated by the solid line in FIG.
Note that the seat back 2 is tilted forward by operating the shaft pin 60 in the direction of rotation opposite to the above. Since such an operation is obvious from the configuration described so far, detailed description thereof is omitted.

As described above, according to the reclining device 4 of the present embodiment, the wedge member 30A or the wedge member 30B is released from the biting state in the state where the biased state by the spring member 40 is released, so that the wedge member 30A or The biting state of the wedge member 30B can be released gently. Furthermore, the above-described configuration can be realized relatively easily by using the configuration in which the wedge member 30A or the wedge member 30B is pushed using the force by which the spring member 40 is pushed by the pushing member 50. it can. Furthermore, by employing the connecting device of the present invention as the reclining device 4 for the vehicle seat 1, the backrest angle of the seat back 2 can be suitably adjusted.
The wedge members 30A, 30B are structured to be pushed by the pushing member 50 via the spring members 40 hooked into the long holes 31A, 31B, and are formed in a frame shape without protrusions. Accordingly, the wedge members 30A and 30B can be easily formed by press molding.

Then, the structure of the reclining apparatus 4 of Example 2 is demonstrated using FIGS. 8-11. Here, FIG. 8 shows an exploded perspective view of the reclining device 4, and FIG. 9 shows an internal structure of the reclining device 4 in the assembled state. In the present embodiment, detailed description will be omitted for portions having substantially the same configuration and operation as the reclining device 4 shown in the first embodiment, and different portions will be described in detail with different reference numerals.
In the reclining device 4 of the present embodiment, as shown in FIG. 8, a projecting piece 53 protruding in the axial length direction is integrally formed on the pushing member 50 that pushes the wedge members 30 </ b> A and 30 </ b> B. .
The projecting piece 53 is disposed at a position sandwiched between the contact surfaces 32A and 32B, which are the lower surfaces of the wedge members 30A and 30B. The protrusion 53 has a wedge pressing portion that can be pushed and moved in the pushing direction by contacting each of the contact surfaces 32A and 32B with the rotation of the pushing member 50 at each end in the circumferential direction. 53A and 53B are formed. As shown in FIG. 9, the wedge pressing portions 53 </ b> A and 53 </ b> B have contact surfaces that contact the contact surfaces 32 </ b> A and 32 </ b> B of the wedge members 30 </ b> A and 30 </ b> B, respectively. These contact surfaces are formed so as to face the rotation direction of the pushing member 50.
For example, when the pressing member 50 rotates in the clockwise direction in the drawing, the spring pressing portion 52A on the left side of the wing portion 52 has a spring pressing portion 52A as shown in FIG. The left hanging portion 41A is pushed to release the urging state of the wedge member 30A. Then, as the rotation of the pushing member 50 further proceeds from this state, as shown in FIG. 11, the left wedge pressing portion 53A of the projecting piece 53 contacts the contact surface 32A of the left wedge member 30A. The wedge member 30 </ b> A is pushed in the direction opposite to the biting direction. Accordingly, the left wedge member 30A is pushed and operated in a state where the biased state by the spring member 40 is released, and the biting state is released by this pushing operation.
As described above, according to the reclining device 4 of the present embodiment, the spring pressing portion 52A or the spring pressing portion 52B is moved first with the spring pressing portion 52A or the spring pressing portion 52B as the rotation of the pressing member 50 proceeds. The wedge pressing portion 53A or the wedge pressing portion 53B is brought into contact with the wedge member 30A or the wedge member 30B by further progress of the subsequent rotation, so that the wedge member 30A or the wedge member 30B is bitten. The state can be released gently.

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, as long as it is 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, it can be adopted in other configurations.
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, in the first embodiment, the configuration in which the hook portion of the spring member is rotated integrally with the wedge member by contacting the end portion of the long hole is illustrated. The part which engages with the hanging part of the member may be formed separately.

1 is an exploded perspective view of a reclining device according to Embodiment 1. FIG. It is a schematic block diagram of a sheet. It is a perspective view showing the attachment structure to the seat of a reclining device. It is the IV-IV sectional view taken on the line of FIG. It is the VV sectional view taken on the line of FIG. It is a block diagram showing the state from which the biasing state of the wedge member by the spring member was cancelled | released from the state of FIG. It is a block diagram showing the state by which the biting state of the wedge member was cancelled | released from the state of FIG. It is a disassembled perspective view of the reclining apparatus of Example 2. FIG. It is sectional drawing which looked at the assembly | attachment state of a reclining apparatus from the IX-IX line cut surface of FIG. FIG. 10 is a configuration diagram illustrating a state in which the urging state of the wedge member by the spring member is released from the state of FIG. 9. It is a block diagram showing the state by which the biting state of the wedge member was cancelled | released from the state of FIG.

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 Cylindrical 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 Long hole 32A, 32B Abutting surface 40 Spring member 41A, 41B Hooking part 50 Pushing member 51 Fitting cylinder part 52 Wing part 52A, 52B Spring pushing part 53 Protruding piece 53A, 53B Wedge pushing part 60 Shaft pin 70 Outer ring 71 Inner holding surface 72 Outer holding surface

Claims (4)

A connecting device that is located between two rotating members arranged to be rotatable relative to each other and connects them,
A disk-shaped internal tooth member connected to one of the two rotating members;
A disc-shaped external tooth member that is assembled in such a manner that the internal tooth member and the disk surface of each other are superposed and connected to the other of the two rotating members;
The internal gear member is formed with an internal gear that protrudes in a cylindrical shape from a disk surface facing the external tooth member and has internal teeth on the inner peripheral surface thereof,
The external tooth member is formed with an external gear that protrudes in a cylindrical shape from the disk surface facing the internal tooth member and has external teeth on the outer peripheral surface thereof,
The external gear has a smaller diameter than the internal gear and has a different number of teeth, and relatively revolves along the inner peripheral surface of the external gear engaged with the internal gear. The two rotating members can be relatively rotated by the difference in the number of teeth of both gears,
The relative revolving motion of the external gear is performed in accordance with the rotation of the shaft pin inserted through the internal gear member and the external gear member in the plate thickness direction. It is inserted through an insertion hole formed around the central axis of the internal gear, and the internal tooth member is formed with a cylindrical portion that protrudes cylindrically from the disk surface along the peripheral shape of the insertion hole. The outer tooth member is formed with a through hole so as to surround the outer peripheral edge of the cylindrical portion formed in the inner tooth member, and the through hole is formed around the central axis of the external gear. And the cylindrical portion formed on the internal tooth member is in an eccentric relationship with each other,
A gap formed between the inner peripheral surface of the through-hole formed in the outer tooth member and the outer peripheral surface of the cylindrical portion formed in the inner tooth member has a pair of members as a part of the gap. A wedge member is disposed, and the pair of wedge members are disposed opposite to each other so as to surround the outer peripheral surface of the cylindrical portion, and the spring members provided between the wedge members are engaged with each other. A state in which the outer gear is pressed against the inner peripheral surface of the internal gear while being held in a state of being sandwiched in a narrowing gap between the outer peripheral surface of the cylindrical portion and the inner peripheral surface of the through hole And
When the pair of wedge members is pushed in the direction opposite to the biting direction by the pushing member integrally assembled with the shaft pin in the turning direction, the one wedge member is pushed in the direction opposite to the biting direction. The biting state of the one wedge member is released, and the other wedge member is pushed and moved in accordance with this rotation to press the outer peripheral member while pressing the inner peripheral surface of the through hole formed in the external tooth member. Relatively revolved,
The pushing structure to the wedge member by the pushing member is a spring in which the pushing member first biases the wedge member in the biting direction as the pushing member rotates in the pushing direction. The member is pressed in the bias release direction to release the biased state with respect to the wedge member, and the pushing member releases the wedge member released from the biased state by the further rotation, in a direction opposite to the biting direction. A connecting device characterized by having a stepwise pushing structure for pushing. The connecting device according to claim 1,
The pushing structure of the wedge member by the pushing member is such that the hook portion of the spring member is hooked into a long hole that is recessed in the axial length direction along the pushing direction of the pushing member formed in the wedge member. The spring member hooked into the long hole is disposed in a manner protruding from the long hole in the axial length direction of the wedge member, and the hook portion is opposite to the pushing direction of the long hole. The wedge member is urged in the biting direction by being pressed against the end portion, and a spring pressing portion having a shape protruding outward in the radial direction formed on the pressing member when the shaft pin rotates. The abutting state of the wedge member by the spring member is released by abutting the spring member protruding in the axial direction of the wedge member and pushing it in the rotating direction, so that the spring member is pushed. The wedge member is a spring member by abutting the end of the elongated hole in the pushing direction. Coupling device, characterized in that the arrangement is pushed in the direction opposite to the direction bite together manner. The connecting device according to claim 1,
The pushing structure of the wedge member by the pushing member is such that the hook portion of the spring member is hooked into a long hole that is recessed in the axial length direction along the pushing direction of the pushing member formed in the wedge member. The spring member hooked into the long hole is disposed in a manner protruding from the long hole in the axial length direction of the wedge member, and the hook portion is opposite to the pushing direction of the long hole. The wedge member is urged in the biting direction by being pressed against the end portion, and a spring pressing portion having a shape protruding outward in the radial direction formed on the pressing member when the shaft pin rotates. The abutting state of the wedge member by the spring member is released by abutting the spring member projecting in the axial direction of the wedge member and pushing it in the turning direction, and the push member is released by the further turning. The wedge pressing portion formed on the moving member and projecting outward in the radial direction is the wedge. Coupling device, characterized in that the arrangement is pushed in a direction opposite to the release has been wedge member bite direction of contact with 該附 energized state bicycloalkyl member and pushing direction. A connecting device according to any one of claims 1 to 3,
One rotating member connected to the inner tooth member is a frame member that forms one skeleton of a seat back of a vehicle seat or a seat cushion, and the other rotating member connected to the outer tooth member is a vehicle member. A frame member that forms the other skeleton of the seat back of the seat or the seat cushion, and is employed as a reclining device that can adjust the backrest angle of the seat back with respect to the seat cushion in accordance with the relative rotation of both frame members. A coupling device characterized by that.

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