JP5169232B2 - Vehicle seat coupling device - Google Patents

Description

The present invention relates to a coupling equipment of the vehicle seat. For more information, about the connecting equipment of a vehicle seat connecting two subject components to be relatively rotatable with each other.

  2. Description of the Related Art Conventionally, in a vehicle seat, a configuration is known in which a seat back is connected to a seat cushion via a reclining device, and an operation for adjusting a backrest angle thereof is possible. Here, the following Patent Document 1 discloses the configuration of the reclining device described above. In this disclosure, the reclining device holds two disk-like members that are integrally connected to the skeleton portion of the seat cushion and the skeleton portion of the seat back, and holds them in a state of being overlapped with each other in the axial direction. Holding member.

  The two disk-shaped members described above are each formed with a cylindrical portion whose outer peripheral edge protrudes in the axial direction. The two disk-shaped members are configured to support each other so as to be relatively rotatable with each other by the fitting structure of the other side by fitting the other side cylindrical part into the one side cylindrical part. On the other hand, the holding member is formed in a cylindrical shape having flange-shaped holding surfaces at both ends for holding the cylindrical portions of the two disk-shaped members described above in the axial direction.

The holding member is formed by bending the above-described holding surface on one side in advance, and after assembling both disk-like members inside the cylinder of the holding member, the holding surface on the other side is bent by caulking. It has become so.
JP 2007-130237 A

  However, in the related art disclosed above, it is difficult to perform the caulking process for forming the holding surface on the other side of the holding member by downsizing the reclining device. That is, conventionally, the clamping process of the other clamping surface is performed by applying a receiving die to the previously formed clamping surface on one side. Accordingly, the size of the receiving surface to which the receiving mold is applied is reduced due to the downsizing of the reclining device, and the support during the caulking process becomes unstable.

  The present invention was created to solve the above-described problems, and the problem to be solved by the present invention is to assemble two connecting members in the axial direction as in a reclining device for a vehicle seat. Even if the connecting device to be configured is downsized, the two connecting members are favorably supported in the axial direction by the holding member.

In order to solve the above problems, connection equipment of the vehicle seat of the present invention takes the following means.
A first invention is a vehicle seat coupling device that couples two target members so as to be relatively rotatable with each other, and includes two coupling members and a holding member. The two connecting members are integrally connected to one side or the other side of the two target members, and are assembled in the axial direction so as to support each other so as to be relatively rotatable. The holding member holds the two connecting members in an assembled state while supporting them in the axial direction. The holding member is formed as an elongate member that is wound around the outer peripheral portion of the connecting member on one side serving as a reference. The cross-section cut in the short direction of the holding member has a fitting surface that can be applied to the outer peripheral portion of each connecting member in the axial direction and can be applied to each outer peripheral portion in the axial direction. It is said that.

  According to the first aspect of the invention, the holding member is configured to be wound around the outer peripheral portion of the one side connecting member and has a cross-sectional shape having a fitting surface. Therefore, as compared with a case where the holding surface is molded by post-processing such as caulking after assembling the holding member, even if both the connecting members are downsized in the radial direction, the formability of the holding surface itself is ensured. Therefore, even if both connecting members are reduced in size, both connecting members can be favorably supported in the axial direction by the holding member.

Next, according to a second aspect, in the first aspect described above, the outer peripheral surface of the connecting member on one side serving as a reference is formed as an annular circumferential surface. The holding member is wound around the annular outer peripheral surface of the connecting member in a ring shape and assembled.
According to the second aspect of the invention, the holding member is wound around and attached to the outer peripheral surface of the reference connecting member on one side. Therefore, the holding member can be easily assembled.

Next, according to a third aspect of the present invention, in the first or second aspect described above, the position of the opening where the one end and the other end of the holding member are opened is the position of the two connecting members disposed between the two connecting members. It is set at a position shifted in the circumferential direction with respect to the lock component that locks the relative rotation.
According to the third aspect of the present invention, the holding force for holding the connecting members so that the connecting members are not pulled apart from each other in the axial direction is weaker than that of the other cross-sectional portions. However, since the opening is set at a position that deviates in the circumferential direction with respect to the lock part, even if a load that pushes and moves the lock part in the axial direction occurs, this Less susceptible to action. Therefore, both connecting members can be favorably supported in the axial direction by the holding member.

  Embodiments of the best mode for carrying out the present invention will be described below with reference to the drawings.

  First, the configuration of the vehicle seat coupling device according to the first embodiment will be described with reference to FIGS. Here, FIG. 2 shows a schematic configuration of the vehicle seat 1 of the present embodiment. In the vehicle seat 1, a seat back 2 that serves as a backrest is coupled to a seat cushion 3 that serves as a seating portion by a pair of left and right reclining devices 4 and 4 disposed at lower positions on both sides. Here, the reclining devices 4 and 4 correspond to the vehicle seat coupling device of the present invention.

  The reclining devices 4 and 4 are configured such that operation shafts 4c and 4c that perform unlocking operations of each other are integrally connected by a connecting rod 4r. Accordingly, each reclining device 4, 4 is in a locked state in which the backrest angle of the seat back 2 is fixed, and in a released state in which the fixed state is released and the backrest angle of the seat back 2 can be adjusted. The operation states are switched in synchronization with each other. Here, the reclining devices 4 and 4 are normally held in a locked operating state by urging.

  Each reclining device 4, 4 is operated to release the locked state all at once by performing a pull-up operation of the operation lever 5 provided at the side position of the seat cushion 3. Thereby, since the fixed state of the backrest angle of the seat back 2 is released, the adjustment movement of the backrest angle can be performed. Then, after adjusting the backrest angle of the seat back 2, if the release operation of the operation lever 5 is stopped, the reclining devices 4 and 4 are again returned to the locked state by the urging force. It will be fixed at the droop angle position.

  Here, the seat back 2 is normally urged in a forward rotation direction by an urging force of an urging spring (not shown) hooked between the seat back 2 and the seat cushion 3. Therefore, when the vehicle seat 1 is not seated and used, the reclining devices 4 and 4 are released from the locked state, whereby the seat back 2 is pushed forward by the urging force, and the seat cushion 3 is moved upward. It is in a folded state.

  At this time, the reclining devices 4 and 4 are normally returned to the locked state by urging by stopping the release operation of the operation lever 5 when the seat back 2 is in an angle region used as a backrest. However, in the rotation angle region of each reclining device 4, 4, there are a lock zone that is returned to the locked state by urging when the release operation is stopped, and a free zone that is not returned to the locked state even if the release operation is stopped. Is set.

  The former lock zone is normally set to an angular region where the seat back 2 is used while being seated, specifically, an angular region where the seat back 2 is tilted backward from an angular position where the seat back 2 is in an upright posture. The latter free zone is set to an angular region where the seat back 2 is not used while being seated, that is, an angular region where the seat back 2 is tilted forward from an angular position where the seat back 2 is in an upright posture.

  Therefore, when the seat back 2 is moved forward, the reclining devices 4 and 4 are unlocked, and if the seat back 2 is tilted slightly from the upright position, the release operation is stopped. The back 2 is naturally pushed down to the position where it is folded into the upper surface of the seat cushion 3. Hereinafter, the configuration of the reclining devices 4 and 4 will be described in detail. The reclining devices 4 and 4 have a symmetrical configuration with each other, but have substantially the same configuration. Therefore, below, only the configuration of the reclining device 4 shown on the right side in FIG.

  As shown in FIG. 1, the reclining device 4 includes a disk-shaped ratchet 10 and a guide 20, a pair of upper and lower poles 30 and 30 and a slide cam 40 disposed between the disk surfaces, A hinge cam 50 for sliding the slide cam 40, a biasing spring 60 for biasing the hinge cam 50, and the ratchet 10 and the guide 20 are sandwiched in the thickness direction (axial direction). A holding member 70 for holding is assembled into one. Here, the guide 20 corresponds to the connecting member on one side of the present invention, the ratchet 10 corresponds to the connecting member on the other side of the present invention, and the poles 30 and 30 correspond to the locking parts of the present invention.

  Specifically, the ratchet 10 is formed with a cylindrical portion 12 that protrudes in a cylindrical shape in the thickness direction at the outer peripheral edge of the disk portion 11. The cylindrical portion 12 is formed by half-cutting the outer peripheral edge of the disc portion 11 in the plate thickness direction. And the internal tooth 12a and the protrusion plane 12b are formed in the internal peripheral surface of this cylindrical part 12. As shown in FIG. The projecting flat surface 12b is formed with a flat surface at a position projecting radially inward from the inner teeth 12a, and is located at two positions on the inner peripheral surface of the cylindrical portion 12 that are axisymmetric. Is arranged.

  And the rotation angle area | region of the circumferential direction in which this internal tooth 12a was formed is set as a lock zone which can be locked by meshing | engaging with the poles 30 and 30 mentioned later, and the rotation angle area | region in which the protrusion plane 12b was formed However, it is set as a free zone where the lock described above is not performed. As shown in FIG. 3, the ratchet 10 is integrally connected to the seat back 2 by joining the outer surface of the disk portion 11 to the plate surface of the back frame 2 f forming the skeleton of the seat back 2. Has been. Here, the back frame 2f corresponds to one side of the two target members of the present invention.

  Here, the disc portion 11 of the ratchet 10 is formed with a plurality of dowels 13a... And D dowels 13b that protrude in a cylindrical shape from the outer plate surface. These dowels 13a,... And D dowels 13b are arranged and formed at equal intervals in the circumferential direction at a position closer to the outer peripheral edge of the disk portion 11. Among them, the D dowel 13b is formed by cutting out a part of the protruding cylindrical shape into a D-shaped cross section, and the shape is distinguished from the dowel 13a protruding in the cylindrical shape. ing.

  On the other hand, the dowel holes 2a,... And the D dowel holes 2b into which the above-described dowels 13a,. Therefore, by fitting these dowels 13a... And D dowels 13b into dowel holes 2a .. and D dowel holes 2b formed in the back frame 2f, respectively, by welding and joining the respective fitting portions, The ratchet 10 is firmly and integrally connected to the back frame 2f (see FIG. 5).

  At the center of the disk portion 11 of the ratchet 10, a through hole 14 is formed for inserting an operation shaft 4 c (see FIG. 2) for performing the unlocking switching operation of the reclining device 4. The back frame 2f is also provided with a through hole 2c at the same coaxial line as the through hole 14 for the same purpose.

  Next, returning to FIG. 1, the configuration of the guide 20 will be described. The guide 20 is formed in a disk shape having an outer diameter slightly larger than that of the ratchet 10. A cylindrical portion 22 is formed on the outer peripheral edge of the disk portion 21 of the guide 20 so as to protrude in a cylindrical shape in the thickness direction toward the ratchet 10. The cylindrical portion 22 is formed by half-cutting the outer peripheral edge of the disc portion 21 in the plate thickness direction. As shown in FIG. 5, the cylindrical portion 22 is formed to have a size capable of enclosing the cylindrical portion 12 of the ratchet 10 from the outer peripheral side.

  In a state in which the cylindrical portion 12 of the ratchet 10 is assembled inside the cylinder of the cylindrical portion 22, the guide 20 and the ratchet 10 slide relative to each other and rotate relative to each other in a state where the cylindrical shapes are fitted to each other. It is in a state that can be. As shown in FIG. 4, the guide 20 is integrally connected to the seat cushion 3 by joining the outer surface of the disk portion 21 to the plate surface of the cushion frame 3 f that forms the skeleton of the seat cushion 3. Has been. Here, the cushion frame 3f corresponds to the other side of the two target members of the present invention.

  Here, the disc portion 21 of the guide 20 is formed with a plurality of dowels 24a... And D dowels 24b that protrude in a cylindrical shape from the outer plate surface. These dowels 24a... And D dowels 24b are arranged and formed at equal intervals in the circumferential direction at a position closer to the outer peripheral edge of the disk portion 21. Among these, the D dowel 24b is formed by cutting out a part of the protruding cylindrical shape into a D-shaped cross section, and the shape is distinguished from the dowel 24a. ing.

  On the other hand, dowel holes 3a,... And D dowel holes 3b, through which the above-described dowels 24a, .., and D dowels 24b can be fitted, are formed through the cushion frame 3f. Therefore, by fitting these dowels 24a... And D dowels 24b into dowel holes 3a .. and D dowel holes 3b formed in the cushion frame 3f, and welding and joining the respective fitting portions, The guide 20 is firmly and integrally connected to the cushion frame 3f (see FIG. 5).

  A through hole 25 is formed in the center of the disk portion 21 of the guide 20 for inserting the operation shaft 4c (see FIG. 2) for performing the unlocking switching operation of the reclining device 4. And the through-hole 3c is formed also in the cushion frame 3f at the position on the same axis as the through-hole 25 for the same purpose. The through hole 3c is formed in a large shape so that a biasing spring 60 described later can be accommodated in the hole.

  Returning to FIG. 1, a guide groove 23 is formed in the disk portion 21 of the guide 20, the inner plate surface of which is recessed in a “ten” sign shape in the plate thickness direction. The guide groove 23 is formed by half-cutting the disk portion 21 in the plate thickness direction in the shape of a “ten”. Here, the above-mentioned dowels 24a... And D dowels 24b are formed so as to protrude at positions on the outer board surface where the guide grooves 23 are formed. In the guide groove 23, the upper and lower groove portions in the figure are formed as pole grooves 23 a and 23 a that can accommodate respective poles 30 and 30 to be described later.

  As shown in FIG. 7, these pole grooves 23a and 23a are formed in the shape of guide walls 21a and 21b and guide walls 21c and 21d formed as side walls on both the left and right sides. The guide 20 is guided so as to be slid only inward and outward in the radial direction (the vertical direction in the figure) along the shape. Further, the right and left sides of the guide groove 23 extending in the lateral direction and the groove portions therebetween are formed as a single slide cam groove 23b in which a slide cam 40 described later can be housed.

  The slide cam groove 23b is formed in the radial direction of the guide 20 along the groove shape by the shape of the guide walls 21a, 21c and the guide walls 21b, 21d formed as side walls on both upper and lower sides. It is guided so as to be slid only inward and outward (left and right in the figure). Returning to FIG. 1, the disk portion 21 of the guide 20 is formed with spring hook portions 26 and 26 protruding in a pin shape from the outer plate surface. These spring hook portions 26 and 26 are functional parts for hooking an outer end 62 of an urging spring 60 (winding spring), which will be described later, and are arranged in two circumferential directions so that the hook position can be selected. It is formed in the place.

  Next, the configuration of the poles 30 and 30 will be described. The poles 30 and 30 are formed in a frame shape that is accommodated in the pole grooves 23a and 23a formed in the guide 20 described above. These poles 30 and 30 are formed in a vertically symmetrical shape. Specifically, each of the poles 30 and 30 is formed in an arcuate shape whose outer peripheral edge matches the inner peripheral surface of the cylindrical portion 12 of the ratchet 10 described above. Outer teeth 30 a and 30 a that can mesh with the inner teeth 12 a formed on the inner peripheral surface of the cylindrical portion 12 of the ratchet 10 are formed on the outer peripheral surface curved in an arc shape.

  Accordingly, as shown in FIG. 6, the pawls 30, 30 are pressed by a slide cam 40, which will be described later, and slide outward in the radial direction, whereby the external teeth 30 a, 30 a are brought to the inner peripheral surface of the ratchet 10. It will be in the state which meshed with the formed internal tooth 12a. Thereby, each pole 30 and 30 and the ratchet 10 will be in an integrated state in the circumferential direction by mutual meshing. However, each pole 30, 30 can slide only inward and outward in the radial direction in relation to the guide 20.

  Therefore, the ratchet 10 is in a state in which relative rotation with respect to the guide 20 is restricted via the respective pawls 30 and 30 that are meshed with each other. Thereby, the reclining apparatus 4 will be in the locked state. As shown in FIG. 7, the locked state of the reclining device 4 is released when the poles 30, 30 are pulled inward in the radial direction and are released from the meshed state with the ratchet 10.

  Here, the operation of sliding the poles 30 and 30 inward and outward in the radial direction is performed by the movement of the slide cam 40 disposed between the poles 30 and 30. As shown in FIG. 1, the slide cam 40 is formed in a frame shape that is accommodated in the slide cam groove 23 b formed in the guide 20 described above. The slide cam 40 is formed in a vertically symmetrical shape. Specifically, the slide cam 40 has shoulders 42 and 42 that can push the poles 30 and 30 outward in the radial direction on the upper and lower edges of the figure, and the poles 30 and 30 have a radius. Hooks 44, 44 that can be pulled inward in the direction are formed.

  Here, the above-described poles 30 and 30 are formed in a gate shape in which the shape on the radially inner side is partially cut out. Each of the poles 30, 30 is made radially outward by the slide cam 40 by bringing the leg portions 32, 32 forming both gate-shaped legs into contact with the upper edge side and lower edge side surfaces of the slide cam 40, respectively. The side is pressed. Specifically, as shown in FIG. 6, in the state where the slide cam 40 is slid to the left side in the drawing, each pole 30, 30 is connected to each leg portion 32, each shoulder portion 42, The state of being pushed on 42 is held in a state of being pushed outward in the radial direction.

  Thereby, each pole 30 and 30 is hold | maintained as the state which mesh | engaged each external tooth 30a and 30a with the internal tooth 12a of the ratchet 10. FIG. As shown in FIG. 7, the pawls 30, 30 are slid onto the respective hanging portions 31, 31 formed on the inner side of the portal shape when the slide cam 40 slides to the right side in the figure. Are hooked and pulled radially inward. As a result, the legs 32, 32 that have been riding on the shoulders 42, 42 of the poles 30, 30 are drawn into the grooves 43, 43 located on the left side of the legs 30, 30. And the meshing state of the ratchet 10 are released.

  These groove portions 43 and 43 are formed in a shape that is smoothly recessed from the respective shoulder portions 42 and 42. Accordingly, from the state shown in FIG. 7, the slide cam 40 slides to the right side in the drawing, so that the legs 32, 32 of the poles 30, 30 move along the shapes of the grooves 43, 43. Then, the vehicle rides on the shoulders 42, 42 (see FIG. 6). The operation of sliding the slide cam 40 in the left-right direction in the drawing is performed by the movement of the hinge cam 50 assembled in the cam hole 41 penetratingly formed in the central portion of the slide cam 40.

  As shown in FIG. 1, the hinge cam 50 is rotatably assembled in a cam hole 41 formed through the center of the slide cam 40. The hinge cam 50 is normally urged to rotate in the clockwise direction shown in FIG. 1 by the urging force of an urging spring 60 (winding spring) hooked between the hinge cam 50 and the guide 20. Here, as shown in FIG. 4, the urging spring 60 has an inner end 61 hooked to the spring hooking portion 51 of the hinge cam 50 and an outer end 62 hooked to the spring hooking portion 26 of the guide 20. Has been.

  Thereby, as shown in FIG. 6, the hinge cam 50 is slid to the left side in the drawing by pressing the slide cam 40 from the inner surface side of the cam hole 41 by the operation projection 52 which is normally formed to protrude from the outer periphery thereof. It is supposed to let you. As a result, the poles 30 and 30 are held in a locked state where the pawls 30 and 30 mesh with the ratchet 10 as the leg portions 32 and 32 ride on the shoulder portions 42 and 42 of the slide cam 40.

  The hinge cam 50 is integrally connected to the operation shaft 4c described above with reference to FIG. Thereby, the hinge cam 50 is rotated counterclockwise in the figure against the urging of the urging spring 60 shown in FIG. 1 as the operation lever 5 (see FIG. 2) is pulled up. ing. That is, the hinge cam 50 is rotated in the clockwise direction of FIG. 6 by the above-described operation. As a result, as shown in FIG. 7, the slide cam 40 is slid to the right in the figure, and the poles 30 and 30 are released from the meshed state with the ratchet 10.

  Next, returning to FIG. 1, the holding member 70 will be described. As shown in FIG. 8, the holding member 70 is formed as a long thin steel plate that extends straight before assembly. As shown in FIG. 1, the holding member 70 is assembled in the axial direction so as to support the above-described guide 20 and ratchet 10 so as to be relatively rotatable with each other (first assembling step), and then the outer peripheral portions thereof. Are assembled so as to be wound in a ring shape (second assembling step).

  Here, as shown in FIG. 5, the cross-section of the holding member 70 cut in the short direction has a stepped shape along the shape of the outer peripheral portions (cylindrical portions 22, 12) of the guide 20 and the ratchet 10. Is formed. Further, on each end portion of the cross section, there are bent contact surfaces 71 and 72 in which surfaces are applied in the axial direction to the outer plate surface of the outer peripheral portion of the ratchet 10 and the outer plate surface of the outer peripheral portion of the guide 20, respectively. Is formed. Strictly speaking, a slight gap is set between the outer plate surface of the ratchet 10 and the fitting surface 71 applied to this surface, so that the relative rotation of the ratchet 10 with respect to the guide 20 is not hindered. ing.

  In addition, as shown in FIG. 1, the abutting surface 71 applied to the outer plate surface of the ratchet 10 described above has protrusions 71 a. Is formed. As a result, the outer surface of the ratchet 10 comes into contact with the fitting surface 71 at a point by the protrusions 71a, so that the influence of the sliding resistance due to the contact at the time of rotation can be suppressed to be small. It is like that.

  By the way, the above-described holding member 70 is set across the half molds obtained by dividing the cylindrical mold into left and right, and the molds are clamped so that each half mold is applied to the outer peripheral portion of the guide 20 and the ratchet 10. By doing so, it is bent into a ring shape along the shape of the outer peripheral portion and assembled to the outer peripheral portion. Here, the length of the holding member 70 in the longitudinal direction is set to be shorter than the circumferential length of the guide 20. Thereby, when the holding member 70 is wound around the outer peripheral portion of the guide 20, the other end is not superposed on one end of the holding member 70.

  Therefore, as shown in FIG. 4, in the state in which the holding member 70 is wound around the guide 20, an opening 73 that forms a gap is formed between one end and the other end of the holding member 70. The position of the opening 73 is set at a position shifted in the circumferential direction from the formation position of the pole grooves 23a, 23a, dowels 24a,. Yes. Thus, for example, when a large load is applied such as when a vehicle collides, even if a load is generated in which the poles 30 and 30 are forcibly rotated and displaced from the meshed state with the ratchet 10 and pushed in the axial direction, The opening portion 73 of the holding member 70 is not easily subjected to the action of a direct axial pressing force from the poles 30 and 30. Similarly, the opening portion 73 is less likely to be subjected to an axial load applied to the position where the dowels 24a,.

  Thus, according to the reclining device 4 that is the vehicle seat coupling device of the present embodiment, the holding member 70 is configured to be wound around the outer periphery of the guide 20 and the ratchet 10, and the receiving surface 71, 72 having a cross-sectional shape. Therefore, compared to the case where the holding surface 70 or the holding surface 72 is formed by post-processing such as caulking after the holding member 70 is assembled, the setting surface is reduced even if the guide 20 and the ratchet 10 are downsized in the radial direction. The moldability of 71 and 72 itself is ensured.

  That is, for example, when the fitting surface 72 applied to the outer plate surface of the guide 20 is formed by caulking after assembly, the receiving die is applied to the holding surface 71 applied to the outer plate surface of the ratchet 10 formed earlier. It is applied and the caulking process is performed. Therefore, for example, when the reclining device 4 is downsized and the radial dimension of the cylindrical portion 12 of the ratchet 10 to which the receiving surface 71 is applied is narrowed, the width of the receiving surface 71 of the receiving mold that serves as a support is reduced. As a result, the caulking process cannot be performed satisfactorily.

  However, in the structure of the present embodiment, since the structure in which both the contact surfaces 71 and 72 are formed in advance is wound and assembled, even if the guide 20 and the ratchet 10 are downsized, they are retained by the holding member 70. Can be supported well in the axial direction. And since both the contact surfaces 71 and 72 can be formed with sufficient precision, the clearance gap management between the application surface 71 and the outer board | substrate surface of the ratchet 10 can also be performed favorably.

  Further, the holding member 70 is wound around the outer peripheral surface of the guide 20 formed as a circumferential surface and assembled. Therefore, the holding member 70 can be easily assembled by using a half mold obtained by dividing the cylindrical mold described above into left and right.

  Moreover, in the opening part 73 of the holding member 70, the holding force which holds the guide 20 and the ratchet 10 so as not to be separated from each other in the axial direction is weaker than other cross-sectional parts. However, since the opening 73 is set at a position shifted in the circumferential direction with respect to each of the poles 30, 30, even if a load is generated in which the poles 30, 30 are pushed and moved in the axial direction, From 30, 30, it becomes difficult to receive the action of the direct pressing force. Therefore, the guide 20 and the ratchet 10 can be favorably supported by the holding member 70 in the axial direction.

  Further, since the holding member 70 is formed as an elongated member that extends straight before the assembly, the endless shape of the holding member 70 is assembled by being fitted in the outer periphery of the guide 20 or the ratchet 10 in the axial direction. Compared with a ring-shaped shape, the portion inside the ring is not discharged as scrap during the processing, and therefore the yield as a product can be suppressed.

  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, in the above embodiment, the vehicle seat connecting device of the present invention is applied as the reclining device 4 that connects the seat back 2 to the seat cushion 3 so that the backrest angle can be adjusted. However, this connecting device can also be applied to applications in which the tiltable seat back is connected to the vehicle body floor.

  Further, the connecting device can be applied to an application for connecting the seat body so as to be rotated in the turning direction with respect to the vehicle body floor. Further, the connecting device can be applied to an application in which a so-called ottoman device that lifts and supports the lower leg of the seated person from below is connected to the seat cushion or the vehicle body floor so as to be tiltable.

  Further, as a connecting device, an unlocking operation type reclining device 4 that locks and releases the rotation by engaging or removing the inner teeth 12a of the ratchet 10 and the outer teeth 30a, 30a of the poles 30, 30. However, the external gear (one side connecting member) as disclosed in JP-T-2004-517705 rotates while changing the meshing position on the inner peripheral surface of the internal gear (the other side connecting member). Thus, the configuration of the present invention can be applied to a so-called stepless type reclining device that revolves. In the case of this stepless type reclining device, since the outer diameter of the external gear is formed larger than the outer diameter of the internal gear, the holding member is the outer gear (the one-side connecting member serving as a reference). By winding and assembling around the outer peripheral portion, the contact surface is applied to the outer peripheral portion of the revolving external gear.

  The opening formed between one end and the other end of the holding member may be formed by sticking the one end and the other end. By forming the holding member in such a manner that the one end and the other end stick together, it is possible to cover the grease applied to the inside of the reclining device so as not to leak outside. The holding member may be integrally joined and fixed to the guide by means such as welding.

1 is an exploded perspective view of a reclining device according to Embodiment 1. FIG. It is a perspective view showing the schematic structure of the vehicle seat. It is a perspective view showing the assembly state of the reclining device. It is a perspective view showing the assembly state of the reclining device. It is the VV sectional view taken on the line of FIG. It is the VI-VI sectional view taken on the line of FIG. 3 showing the locked state of the reclining apparatus. It is sectional drawing showing the state which cancelled | released the locked state of the reclining apparatus from the state of FIG. It is a perspective view showing the shape before the assembly | attachment of a holding member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle seat 2 Seat back 2f Back frame (one side of two object members)
2a Dowel hole 2b D Dowel hole 2c Through hole 3 Seat cushion 3f Cushion frame (the other side of the two target members)
3a Dowel hole 3b D Dowel hole 3c Through hole 4 Reclining device (vehicle seat coupling device)
4c Operation shaft 4r Connection rod 5 Operation lever 10 Ratchet (connection member on the other side)
DESCRIPTION OF SYMBOLS 11 Disk part 12 Cylindrical part 12a Internal tooth 12b Projection plane 13a Dowel 13b D dowel 14 Through-hole 20 Guide (one side connection member)
21 disk part 21a-21d guide wall 22 cylindrical part 23 guide groove 23a pole groove 23b slide cam groove 24a dowel 24b D dowel 25 through hole 26 spring hook part 30 pole (locking part)
30a external teeth 31 hooks 32 legs 40 slide cams 41 cam holes 42 shoulders 43 grooves 44 hooks 50 hinge cams 51 spring hooks 52 operating protrusions 60 biasing springs 61 inner ends 62 outer ends 70 holding members 71 bearing surfaces 71a protrusions Part 72 Pitting surface 73 Opening part

Claims (2)

A vehicle seat coupling device that couples two target members such that they can rotate relative to each other,
Two connecting members that are integrally connected to one side or the other side of the two target members and are assembled in the axial direction so as to support each other in a relatively rotatable manner;
A holding member for holding the two connecting members in an axially supported state and assembled,
The holding member is formed as a long member that is wound around the outer peripheral portion of the reference connecting member on one side, and the cross section cut in the short direction is the axial direction of the outer peripheral portion of each connecting member. And a shape having a fitting surface that can apply a surface to each outer peripheral portion in the axial direction .
The position of the opening portion where the one end and the other end of the holding member are opened is a position shifted in the circumferential direction with respect to the lock component that locks the relative rotation of the two connecting members arranged between the two connecting members. The vehicle seat coupling device according to claim 1, wherein: The vehicle seat coupling device according to claim 1,
The outer peripheral surface of the reference connecting member on one side is formed as an annular circumferential surface, and the holding member is wound around the annular outer peripheral surface of the connecting member and assembled. Connecting device for vehicle seat.

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