JP2014189127A - Drive mechanism for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drive mechanism for a vehicle of which space for arranging components can be saved.SOLUTION: In a side support drive mechanism 1 (drive mechanism for a vehicle) in which cables 81, 82 are pulled by a drive power from an actuator AC or loosened from the pulled state, whereby side support devices 3L, 3R are driven, and the side support drive mechanism 1 comprises: the first cable 81 and the second cable 82; the left side support device 3L with which one end part of the first cable 81 is engaged and which is driven due to pulling of the other end part of the first cable 81 or loosening thereof from the pulled state; and the right side support device 3R with which one end part of the second cable 82 is engaged and which is driven due to pulling of the other end part of the second cable 82 or loosening thereof from the pulled state. The one end part of the first cable 81 and the other end part of the second cable 82 are connected to each other.

Description

  The present invention relates to a vehicle drive mechanism that drives a drive device by operating a cable with a drive force from a drive force generation device.

  2. Description of the Related Art Conventionally, a drive mechanism that drives a side support device that supports the upper body of an occupant from the side by pulling a cable with a driving force from a driving force generation device such as an actuator is known (Patent Literature). 1). In the configuration of Patent Document 1, the two cables corresponding to the left and right paddle bodies individually extend from the actuators provided on the left side frame of the seat back and branch off in the middle through the seat back. It is connected to the corresponding paddle body.

JP 2011-178202 A

  By the way, in vehicles such as automobiles, since it is necessary to arrange many parts in a narrow space, it is desired to reduce the space for arranging parts by reducing the number of parts to be arranged. Yes.

Therefore, an object of the present invention is to provide a vehicle drive mechanism that can save space for arranging parts.
Another object of the present invention is to improve the uniformity of operation of the drive device.
Another object of the present invention is to improve assemblability.
Moreover, an object of this invention is to improve the manageability of a cable.
Moreover, an object of this invention is to suppress that a load is applied to a cable.
Another object of the present invention is to suppress the generation of abnormal noise.
Another object of the present invention is to improve the drivability of the drive device.

  In order to achieve the above-described object, the present invention provides a vehicle drive mechanism for driving a drive device by the cable being pulled or loosened from the pulled state by the drive force from the drive force generating device. And the second cable, a first drive device that is driven by engaging one end portion of the first cable and loosening the other end portion of the first cable from the pulled or pulled state, and the second cable. One end of the first cable, and the other end of the second cable is pulled or loosened from the pulled state to drive the second drive device, and the one end of the first cable and the second cable The other end of each is connected.

  According to such a structure, since the one end part of the 1st cable and the other end part of the 2nd cable are connected, the 1st cable and the 2nd cable can be handled as one cable. Thereby, for example, since the number of cables extending from the driving force generator can be reduced, the space for arranging the cables can be saved. In addition, compared to the configuration in which the two cables individually extend from the actuator, branch off in the middle, and are connected to the driving devices, respectively, as in the prior art, the strokes when the two cables are operated are easily made uniform. Therefore, the uniformity of the operation of the two driving devices can be improved.

  In the vehicle drive mechanism described above, the first cable has an engaging portion for engaging one end portion of the first cable with the first driving device, and the second cable has the engaging portion. The second cable can be configured to have a connection portion that connects the other end portion of the second cable to the one end portion of the first cable when engaged with the engagement portion.

  According to this, since the 1st cable and the 2nd cable can be connected easily, assemblability can be improved.

  In the vehicle drive mechanism described above, the first cable and the second cable may be integrally formed.

  According to this, since the number of parts can be reduced, assemblability can be improved.

  In the vehicle drive mechanism described above, the direction in which one end of the first cable enters the first driving device and the direction in which the one end of the second cable enters the second driving device are the same. Can do.

  According to this, since it becomes easy to symmetrize the configuration of the first drive device and the second drive device, it is possible to further improve the uniformity of operation of the two drive devices.

  In the vehicle drive mechanism described above, the second cable has a configuration in which one end portion of the first cable is pulled out from the first drive device on the side opposite to the side entering the first drive device. it can.

  According to this, since the 1st cable and the 2nd cable can be arranged in the shape of a straight line within the 1st drive device, the manageability of a cable can be improved.

  In the vehicle drive mechanism described above, the vehicle includes a vehicle seat having a first frame and a second frame, and the other end portion of the first cable is connected to the drive force generator, and the drive force generation is performed. The device and the first drive device may be attached to the first frame, and the second drive device may be attached to the second frame.

  According to this, since the 1st cable can be shortened, the space-saving for the space for arranging the 1st cable can be attained.

  In the vehicle drive mechanism described above, the first cable is arranged to operate along the longitudinal direction of the first frame, and the second cable operates to operate along the longitudinal direction of the second frame. It can be set as the structure arrange | positioned.

  According to this, since the cable can be arranged along the frame, the space for arranging the cable can be further reduced.

  In the vehicle drive mechanism described above, one of the first frame and the second frame constitutes a left frame with a backrest and the other constitutes a right frame with a backrest, and the vehicle seat includes A load supporting member disposed between the first frame and the second frame for supporting a load from an occupant, wherein the second cable passes behind or under the load supporting member; can do.

  According to this, even if it is a case where a load is applied to a load support member from a crew member, it can control that a load is applied to the 2nd cable.

  In the vehicle drive mechanism described above, the second cable may be configured to be fastened to the load support member.

  According to this, since it is suppressed that a 2nd cable moves when the 2nd cable is pulled, interference with a 2nd cable and another member is suppressed, and generation | occurrence | production of abnormal noise can be suppressed.

  In the vehicle drive mechanism described above, at least one of the first drive device and the second drive device is such that one end to which the one end of the cable is connected is close to and away from the other end by the operation of the cable. A cable that is movable and has a bending member that bends so that an intermediate portion between the one end and the other end protrudes in a predetermined direction when the one end moves in a direction close to the other end; Can be arranged along the bending member on the opposite side of the predetermined direction with respect to the bending member.

  According to this, since the interference between the intermediate portion of the bending member that is bent and the cable is suppressed, it is possible to suppress the load from being applied to the cable when the intermediate portion of the bending member is bent.

  In the vehicle drive mechanism described above, at least one of the first drive device and the second drive device has a moving member that moves when pressed by the intermediate portion by bending of the bending member, and the movement The member may be configured to cover an engagement portion between one end of the cable and the one end of the bending member.

  According to this, it can suppress that a load is applied to the engaging part of the cable, and also the one end part of a cable, and the end of a bending member by covering with a moving member.

  The vehicle drive mechanism described above may include a guide portion for guiding the movement of the one end of the bending member.

  According to this, since one end of the bending member can be moved favorably, the drivability of the driving device having the bending member can be improved.

  According to the present invention, since the first cable and the second cable are connected, they can be handled as one cable, and the space for arranging the cables can be saved. Further, since the strokes when the two cables are operated can be easily made uniform, the uniformity of the operations of the two drive devices can be improved.

  Further, according to the present invention, the first cable and the second cable are provided by providing the engaging portion at one end of the first cable and providing the connecting portion engageable with the engaging portion at the other end of the second cable. Since the cables can be easily connected, the assemblability can be improved.

  Further, according to the present invention, the number of components can be reduced by forming the first cable and the second cable integrally, so that the assemblability can be improved.

  Further, according to the present invention, the configuration of the two drive devices is made by making the direction in which the one end portion of the first cable enters the first drive device and the direction in which the one end portion of the second cable enters the second drive device the same. Therefore, it is possible to improve the uniformity of the operation of the two driving devices.

  Further, according to the present invention, the first cable and the second cable are straightened in the first drive device by pulling the second cable out of the first drive device on the side opposite to the side where the one end of the first cable enters. Since it can arrange | position in a shape, the manageability of a cable can be improved.

  In addition, according to the present invention, the first cable can be shortened by connecting the first cable to the driving force generating device and attaching the driving force generating device and the first driving device to the same frame. Space saving for arranging the cable can be achieved.

  Further, according to the present invention, the first cable and the second cable are arranged so as to operate along the longitudinal direction of the frame, whereby the space for arranging the cables can be further reduced.

  Further, according to the present invention, even if a load is applied to the load support member from the occupant by passing the second cable behind or under the load support member disposed between the left and right frames, It can suppress that a load is applied to the second cable.

  In addition, according to the present invention, since the movement of the second cable can be suppressed by fastening the second cable to the load supporting member, the interference between the second cable and the other member is suppressed, and abnormal noise is generated. Can be suppressed.

  Further, according to the present invention, when the cable is arranged along the bending member on the side opposite to the direction in which the cable protrudes when bending with respect to the bending member of the driving device, the intermediate portion of the bending member is bent. It can suppress that a load is applied to a cable.

  Further, according to the present invention, the driving device is provided with the moving member that covers the engagement portion between the cable and the bending member, thereby suppressing the load on the cable and the engagement portion between the cable and the bending member. be able to.

  Further, according to the present invention, since the one end of the bending member can be favorably moved by providing the guide portion for guiding the movement of the one end of the bending member, the drivability of the drive device having the bending member is improved. be able to.

1 is a perspective view of a vehicle seat as an example of a vehicle seat according to an embodiment. It is a perspective view of the flame | frame incorporated in the vehicle seat. It is a front view of a seat back frame. It is a disassembled perspective view of a side support device. It is a cross-sectional view which shows the side support apparatus before a drive, and the structure of the periphery. It is a longitudinal cross-sectional view of a side support device, and is a figure (a) showing before driving, and a figure (b) showing after driving. It is the figure which looked at the supporting member from the surface side. It is a cross-sectional view showing a configuration around the airbag device. It is figure (a), (b) explaining a 1st cable and a 2nd cable. It is a cross-sectional view which shows the side support apparatus after a drive, and the structure of the periphery. It is a longitudinal cross-sectional view which shows the structure of the pressing member which concerns on a modification, and its periphery, (a) which shows before drive, (b) which shows after drive. It is the figure which looked at the support member concerning a modification from the back side. It is figure (a), (b) explaining the cable which concerns on a modification.

Next, an embodiment of the present invention will be described with reference to the drawings as appropriate.
As shown in FIG. 1, an automobile as a vehicle in the present embodiment includes a vehicle seat S as an example of a vehicle seat used for a driver seat, a passenger seat, and the like. The vehicle seat S mainly includes a seat cushion S1 on which an occupant is seated, a seat back S2, and a headrest S3 that supports the head of the occupant.

  As shown in FIG. 2, the seat back S2 includes a metal seat back frame F2, a side support drive mechanism 1 as an example of a vehicle drive mechanism, a plate-shaped pressure receiving member 10 as a load support member, and an occupant. The airbag apparatus AB is mainly provided for protection from the side, and a cushioning material 70 made of urethane foam or the like and a skin material 75 made of synthetic leather or fabric are placed on the seat back frame F2 so as to cover them. (See FIG. 5 and FIG. 8).

  The seat back frame F2 includes left and right side frames 20 that constitute the left and right frames of the seat back S2. The left and right side frames 20 have a left side frame 20L as an example of a first frame constituting a left frame of the backrest and a right side frame 20R as an example of a second frame constituting a right frame of the backrest. In this embodiment, the left side frame 20L and the right side frame 20R are formed substantially symmetrically.

  The pressure receiving member 10 is a member for supporting a load from an occupant, and is disposed between the left side frame 20L and the right side frame 20R, and retracts to the left and right side frames 20 via the upper and lower support wires W1, W2. It is movably linked. The pressure receiving member 10 is formed by the support wires W1 and W2 being bent or linked when a load of a predetermined value or more is applied to the seat back S2 from the upper body of the occupant, for example, when another vehicle collides with the rear portion of the host vehicle. The support wire W <b> 2 moves rearward due to the swing of the mechanism (not shown), thereby moving backward with respect to the left and right side frames 20. Thereby, since a passenger | crew's upper body sinks into seat back S2, the influence of the load at the time of a rear-end collision with respect to a passenger | crew can be relieve | moderated.

  The side support drive mechanism 1 is a mechanism for driving a support member 50 as an example of a moving member provided on the left and right in the seat back S2. Each of the support members 50 is disposed so as to oppose the vicinity of the portion under the base of the occupant's arm seated on the vehicle seat S, and the upper body of the occupant is viewed from the left and right via the cushion material 70 and the skin material 75. I support it. In the vehicle seat S of the present embodiment, the front end portion of the support member 50 is rotated left and right by the side support drive mechanism 1, so that the portion of the seat back S <b> 2 that faces the vicinity of the portion below the base of the occupant's arm The support position can be adjusted in accordance with the occupant's body shape and the like by inflating toward or away from the inflated state.

  As shown in FIG. 3, the side support drive mechanism 1 includes an actuator AC as a drive force generator, a left side support device 3L as an example of a first drive device, and a right side support device 3R as an example of a second drive device. The first cable 81 and the second cable 82 are mainly provided. In the present embodiment, the left side support device 3L is attached to the inside of the left side frame 20L, and the actuator AC is attached to the outside of the left side frame 20L. Further, the right side support device 3R is attached to the inside of the right side frame 20R in a state of facing the left side support device 3L.

  Although details will be described later, the first cable 81 is a member that transmits the driving force of the actuator AC to the left side support device 3L. One end of the first cable 81 is engaged with the left side support device 3L and the other end is directly connected to the actuator AC. It is connected. The second cable 82 is a member that transmits the driving force of the actuator AC to the right side support device 3R via the first cable 81. One end is engaged with the right side support device 3R, and the other end is the left side support. It is connected to one end of the first cable 81 in the device 3L. As a result, the support member 50 of the left side support device 3L is driven by the other end of the first cable 81 being pulled or loosened from the pulled state by the driving force from the actuator AC. Then, when the other end of the second cable 82 is pulled or loosened from the pulled state, the support member 50 of the right side support device 3R is driven.

  In the present embodiment, the second cable 82 extends from the left side support device 3L, and then passes through the back of the pressure receiving member 10 and is connected to the right side support device 3R. Thereby, even if it is a case where a load is applied to the pressure receiving member 10 from a passenger | crew, it can suppress that a load is applied to the 2nd cable 82 directly. Further, in the present embodiment, the second cable 82 is fastened between the two openings 18 arranged on the left and right sides formed in the pressure receiving member 10 by the binding band 91. Thereby, since the movement of the second cable 82 can be suppressed when the second cable 82 is pulled, interference between the second cable 82 and other members such as the support wire W1 is suppressed, and the generation of abnormal noise is suppressed. can do.

  Each of the left and right side support devices 3L and 3R mainly includes a fixing member 30 fixed to the corresponding one side frame 20, a pressing member 40 as an example of a bending member, and a support member 50. Yes. In the present embodiment, the left and right side support devices 3L and 3R are configured to be substantially bilaterally symmetrical. Therefore, in the following description, the detailed configuration of the left side support device 3L attached to the left side frame 20L will be mainly described. To do.

  As shown in FIG. 4, the fixing member 30 is a member for supporting the pressing member 40 and the supporting member 50 and fixing them to the side frame 20 (not shown in FIG. 4). In the present embodiment, the fixing member 30 includes a substantially vessel-shaped fixing member main body 30A that is open on the inner side in the left-right direction, and an upper portion that extends obliquely rearward from the left-right inner end of the rear wall of the fixing member main body 30A. It has an extending portion 30B and a lower extending portion 30C.

  A shaft support portion 31 that rotatably supports an upper end 42 of a pressing member 40 described later is formed on the upper portion of the fixing member main body 30A. The fixing member main body 30 </ b> A serves as a guide portion 32 for guiding the vertical movement of the lower end 41 of the pressing member 40. The guide part 32 has a guide surface 32 </ b> A that faces the inner side in the left-right direction of the side wall 30 </ b> D constituting the guide part 32 and mainly guides the movement of the lower end 41 of the pressing member 40. As shown in FIG. 5, the guide surface 32 </ b> A is inclined so as to spread leftward and rightward from the rear end portion toward the front end portion so that the front end portion is located on the outer side in the left-right direction with respect to the rear end portion. Thereby, the guide surface 32A is in a state of facing the occupant seated on the vehicle seat S, rather than parallel to the front-rear direction. Further, as shown in FIGS. 6A and 6B, the upper end portion and the lower end portion of the side wall 30D are respectively penetrated for screwing screws 92 when the fixing member 30 is fixed to the side frame 20. One hole 30E is formed.

  As shown in FIG. 4, a shaft portion 33 extending in the vertical direction is formed at the ends of the upper and lower extension portions 30 </ b> B and 30 </ b> C. More specifically, the shaft portion 33A is formed so as to protrude upward from the upper surface of the upper extension portion 30B, and the shaft portion 33B is coaxial with the shaft portion 33A and protrudes downward from the lower surface of the lower extension portion 30C. Is formed. Further, the shaft portion 33C is formed to be coaxial with the shaft portions 33A and 33B and connect the upper and lower extending portions 30B and 30C. These shaft portions 33 </ b> A to 33 </ b> C (shaft portion 33) are portions that function as shafts that rotatably support the support member 50, and are formed integrally with the fixing member 30 as a part of the fixing member 30. Thereby, since the number of parts can be reduced compared with the structure provided with an axis | shaft separately from a fixing member, the structure of side support apparatus 3L, 3R can be simplified.

  The pressing member 40 is a member for driving the support member 50, and mainly includes a lower end 41 that is one end, an upper end 42 that is the other end, and an intermediate portion 43 between the lower end 41 and the upper end 42. ing. As shown in FIGS. 6A and 6B, the pressing member 40 is supported by an upper end 42 so as to be rotatable with respect to the fixing member 30 (side frame 20). One end of the first cable 81 is connected to the first cable 81. As a result, the pressing member 40 can move up and down in the direction of approaching and separating along the guide surface 32A (side surface of the side frame 20) with respect to the upper end 42 to which the lower end 41 is fixed by the operation of the first cable 81. It is configured.

  The intermediate portion 43 is configured to be able to be bent so as to protrude inward in the left-right direction (predetermined direction) when the lower end 41 moves upward, which is a direction close to the upper end 42. More specifically, the intermediate portion 43 includes a bent portion 43A that is bent when the lower end 41 moves in a direction approaching the upper end 42, and a pair formed adjacent to the upper and lower portions of the bent portion 43A with the bent portion 43A interposed therebetween. The protrusion 43B is mainly included. The bent portion 43A is formed to be thinner than other portions of the pressing member 40 so that the bent portion 43A can be bent and deformed. The pair of projecting portions 43B are formed in a rib shape projecting inward in the left-right direction from the bent portion 43A before the bent portion 43A shown in FIG. 6A is bent.

  As shown in FIG. 5, the support member 50 is a substantially plate-like member that supports the vicinity of the site under the base of the occupant's arm via the skin material 75 and the cushion material 70, and the fixing member 30 (side frame 20 ) With respect to the rear end portion thereof, the front end portion is configured to be rotatable left and right. More specifically, as shown in FIG. 4, the support member 50 includes, at its rear end, an upper supported portion 51 disposed on the upper extension portion 30 </ b> B of the fixing member 30 and a lower extension of the fixing member 30. The lower supported portion 52 disposed below the portion 30C, and the shaft engaging portion 53 formed between the upper supported portion 51 and the lower supported portion 52 are provided. The concave portions 51A and 52A formed in the upper and lower supported portions 51 and 52 are engaged with the shaft portions 33A and 33B, and the shaft engaging portion 53 is engaged with the shaft portion 33C, whereby the upper supported portion 51 is engaged. The lower supported portion 52 and the shaft engaging portion 53 are rotatably supported with respect to the fixing member 30. In the present embodiment, since the shaft portions 33A and 33B have a substantially barrel-shaped cross-sectional shape, when the support member 50 is rotated largely inward in the left-right direction with respect to the fixed member 30, the upper and lower covers Although it can detach | leave easily from the support parts 51 and 52, since the shaft engaging part 53 is engaging with the shaft part 33C, the supporting member 50 is suppressed from dropping from the fixed member 30.

  The supporting member 50 has a substantially U-shaped continuous portion having a thickness smaller than that of the upper and lower supported parts 51 and 52 at the edge in the range from the vicinity of the center of the upper end to the center of the lower end through the front end. A plate-like portion 54 is provided. The plate-like portion 54 is formed with a bead 54 </ b> A thicker than the other portions of the plate-like portion 54 by being raised toward the front side of FIG. 4 along the edge of the plate-like portion 54. . As shown in FIG. 5, the bead 54 </ b> A is formed to have a substantially arc-shaped round cross-sectional shape.

  As shown in FIGS. 4 and 7, the support member 50 has a plurality of reinforcing ribs 55 on the front surface 50A for supporting the occupant and on the back surface 50B opposite to the front surface 50A. In the present embodiment, the reinforcing rib 55 on the back surface 50B is formed so as to extend in the vertical direction or the horizontal direction, and a part thereof intersects in a cross shape. In other words, the support member 50 has a plurality of concave portions 56 on the front surface 50A and the back surface 50B, and a plurality of reinforcing ribs 55 are formed so as to partition the concave portions 56. Is formed. With such a configuration, the rigidity of the support member 50 can be improved, so that an occupant seated on the vehicle seat S can be stably supported. The concave portion 56A formed near the center of the back surface 50B extends long in the vertical direction, and functions to guide the movement of the intermediate portion 43 of the pressing member 40 as shown in FIGS. 6 (a) and 6 (b). have.

  The fixing member 30, the pressing member 40, and the supporting member 50 described above are assembled and fixed to the inner surface of the side frame 20 as the side support devices 3L and 3R as shown in FIG. More specifically, the side frame 20 has a substantially U shape in which the front end portion 20A and the rear end portion 20C bend inward in the left-right direction with respect to the side portion 20B. A plurality of contact ribs 35 protruding rearward are formed side by side in the vertical direction (only one is shown). The fixing member 30, that is, the side support devices 3 </ b> L and 3 </ b> R is fixed to the side portion 20 </ b> B of the side frame 20 with the screw 92 in a state where the contact rib 35 is in contact with the inner surface of the rear end portion 20 </ b> C of the side frame 20. Yes. Thereby, since the side support devices 3L and 3R are supported by both the side portion 20B and the rear end portion 20C, the support rigidity can be improved, so that the occupant can be stably supported by the support member 50.

  When the side support devices 3L and 3R are fixed to the side frame 20, the support member 50 is disposed adjacent to the inner side in the left-right direction of the one side frame 20 in the seat back S2, and the pressing member 40 is disposed on the one side frame. 20 and the support member 50. Further, in the present embodiment, the rotation shaft of the support member 50, that is, the shaft portion 33 of the fixing member 30 is substantially entirely disposed behind the rear end (see the chain line) of the side frame 20. Thereby, compared with the structure by which the axial part 33 is arrange | positioned ahead rather than the rear end of the side frame 20, since the rotation amount of the support member 50 can be enlarged, the adjustment range of the support position by side support apparatus 3L, 3R is widened. can do.

  As shown in FIG. 2, in the present embodiment, the left and right side support devices 3L and 3R (fixing member 30) are fixed to the side frame 20 between two mounting holes 25 in the vertical direction. The attachment hole 25 is a through-hole serving as a baffle attachment portion for allowing the baffles 61 and 62 (see FIG. 8) for regulating the deployment direction of the bag body of the airbag apparatus AB to be attached to the side frame 20. The upper and lower ends of the side frame 20 are formed so as to be shifted vertically.

  Here, the configuration around the airbag device AB in the seat back S2 will be briefly described. As shown in FIG. 8, the airbag device AB includes a bag body, an inflator, and the like (not shown), and is fixed to the right side frame 20 </ b> R via a support plate 26. The force cloths 61 and 62 are arranged so as to surround the airbag device AB, and the front end portions thereof are sewn together with the skin material 75 at the breaking portion 76 of the skin material 75, and the rear end portions are fixed to the right side frame 20R. Yes. When the airbag apparatus AB is operated, the bag body that is inflated by the gas generated by the inflator is inflated forward while being guided by the left and right force cloths 61 and 62, and breaks the breaking portion 76 to occupant. Will be deployed on the side of

  The upper and lower portions (only one of them is shown) of the rear end portion of the webbing 61 are fixed to the rivet-type webbing mounting member 27, and the upper and lower webbing mounting members 27 are engaged with the upper and lower mounting holes 25 of the right side frame 20R. By joining, it is fixed to the right side frame 20R. The webbing attachment member 27 is made of resin or the like, and has two through holes 27B and 27C in the body portion 27A. The baffle 61 is passed through the through hole 27B from the outer side in the horizontal direction in FIG. 8 to the inner side, and then fixed to the rod-shaped pin 27D and locked together with the pin 27D in the through hole 27C. It is fixed to the baffle attachment member 27. The body portion 27A of the baffle attachment member 27 is formed with a retaining portion 27E for preventing the attachment from the attachment hole 25. On the other hand, the upper and lower portions (only one of them is shown) of the rear end portion of the webbing 62 are fixed to a hook-like webbing attachment member 28 formed of resin or the like, and the upper and lower webbing attachment members 28 are fixed to the right side frame 20R. It is fixed to the right side frame 20R by being hooked to the end of the rear end portion 20C.

  In the present embodiment, since the two attachment holes 25 are formed so as to be displaced vertically, the webbing 61 can be stably supported by the two attachment holes 25 at the upper and lower positions. In the present embodiment, since the side support devices 3L and 3R are fixed to the side frame 20 between the upper and lower two mounting holes 25, interference between the baffle mounting member 27 and the screw 92 can be suppressed, and the two Compared to the configuration in which the side support devices are fixed above and below the mounting hole 25, the side support devices 3L and 3R can be made compact.

  As shown in FIG. 4, the first cable 81 and the second cable 82 can slide on the tubular sheaths 81B and 82B, respectively, with one end and the other end (only one of them shown) exposed to the outside. Is inserted. Each cable 81, 82 has an engaging portion 83 for engaging one end portion of the cable 81, 82 with the pressing member 40 of the side support devices 3L, 3R at one end portion (only the first cable 81 is shown). doing. The engaging part 83 is a substantially cylindrical member made of metal, and is fixed to one end of each of the cables 81 and 82 (see also FIG. 9). On the other hand, the second cable 82 has a connecting portion 84 for connecting the other end of the second cable 82 to one end of the first cable 81 at the other end. The connection portion 84 is a metal plate having a circular engagement hole 84 </ b> A that can be engaged with the engagement portion 83, and is fixed to the other end portion of the second cable 82.

  As shown in FIG. 9A, in the present embodiment, the first cable 81 and the second cable 82 are engaged by engaging the connecting portion 84 of the second cable 82 with the engaging portion 83 of the first cable 81. Are connected to each other. As described above, in the present embodiment, the first cable 81 and the second cable 82 can be easily connected by the engagement between the engaging portion 83 and the connecting portion 84, so that the side support drive mechanism 1 and the vehicle seat S can be assembled. Can be improved.

  As shown in FIG. 3, the other end of the first cable 81 is wound around a reel (not shown) provided in the actuator AC, and is drawn upward from the actuator AC. The first cable 81 is disposed along the outer surface of the left side frame 20L, is curved above the left side support device 3L, passes through the back of the seat back frame F2, and has one end portion in the left side support device 3L. Entered from above. As shown in FIGS. 9A and 9B, the first cable 81 that has entered the left side support device 3L is engaged with the lower end 41 of the pressing member 40 as shown in FIGS. 3L is engaged.

  Returning to FIG. 3, the second cable 82 is drawn from the left side support device 3 </ b> L on the lower side opposite to the upper side where the one end portion of the first cable 81 enters the left side support device 3 </ b> L. Thereby, since the 1st cable 81 and the 2nd cable 82 can be arrange | positioned linearly in the left side support apparatus 3L, the manageability of the cables 81 and 82 in the left side support apparatus 3L can be improved. The second cable 82 drawn out from the left side support device 3L is disposed with the rear side of the pressure receiving member 10 facing diagonally upward to the right, and one end of the second cable 82 enters the right side support device 3R from above. As shown in FIGS. 9A and 9B, the second cable 82 that has entered the right side support device 3R is engaged with the lower end 41 of the pressing member 40 so that the right side support device is engaged. It is engaged with 3R.

  As shown in FIGS. 6A and 6B, the cables 81 and 82 are arranged on the outer side in the left and right direction opposite to the inner side in the left and right direction from which the intermediate part 43 protrudes with respect to the middle part 43 of the pressing member 40. And is arranged along the pressing member 40 (intermediate portion 43). Thereby, since the interference between the bent intermediate portion 43 and the cables 81 and 82 is suppressed, it is possible to suppress a load from being applied to the cables 81 and 82 when the intermediate portion 43 is bent. Further, since the engaging portion between the one end of the cables 81 and 82 and the lower end 41 of the pressing member 40 is covered by the support member 50, the cables 81 and 82 and the cables 81 and 82 and the pressing member 40 are engaged. It can suppress that a load is applied to a joint part from a passenger | crew.

Next, the effects of the vehicle seat S of the present embodiment will be described while describing the operation of the vehicle seat S configured as described above.
In the state shown in FIG. 5 and FIG. 6A, the other end portion of the first cable 81 is wound up when the passenger operates a controller (not shown) to rotate a reel (not shown) in the actuator AC in one direction. Then, one end of the first cable 81 and one end of the second cable having the other end connected to the first cable 81 are pulled together.

  Then, as shown in FIG. 6B, the lower end 41 of the pressing member 40 engaged with one end of each of the cables 81 and 82 (only one is shown) moves in the direction approaching the upper end 42, and the intermediate portion 43. Is bent so as to protrude inward in the left-right direction. As a result, the support member 50 is pressed by the intermediate portion 43, and as shown in FIG. 10, the support member 50 is pivoted inward in the left-right direction around the shaft portion 33. As a result, the cushion material 70 and the skin material 75 are pressed by the support member 50 and swell toward the occupant side, so that the support position of the occupant can be changed.

  In the present embodiment, since the first cable 81 and the second cable 82 are connected, so that they can be operated as a single cable, for example, the two cables individually extend from the actuator. The stroke when the cables 81 and 82 are operated can be made uniform as compared with a configuration in which the cables 81 and 82 are operated and branched in the middle and connected to the side support devices. Thereby, the uniformity of operation | movement of the left and right side support apparatuses 3L and 3R can be improved.

  Also, as shown in FIG. 3, the direction in which one end portion of the first cable 81 enters the left side support device 3L and the direction in which one end portion of the second cable 82 enters the right side support device 3R are the same. The side support devices 3L and 3R are easily symmetric. In this embodiment, the left and right side support devices 3L and 3R are actually configured substantially symmetrically. Thereby, the uniformity of operation | movement of the left and right side support apparatuses 3L and 3R can be improved more.

  On the other hand, in the state shown in FIG. 10, the occupant operates the controller (not shown) to rotate the reel in the actuator AC in the direction opposite to the one direction, so that the winding state of the other end of the first cable 81 is When loosened, the one end of the first cable 81 and the one end of the second cable are loosened together.

  Then, as shown in FIG. 5, the front end of the support member 50 pivots about the shaft 33 outward in the left-right direction due to the load from the occupant and the restoring force of the skin material 75 and the cushion material 70. At this time, the pressing member 40 is pushed by the supporting member 50, so that the bent middle portion 43 returns from the state shown in FIG. 6B to the state shown in FIG. It moves in the direction away from the upper end 42 while pulling one end of 81 and 82. Thereby, it can retract from the state which the cushion material 70 and the skin material 75 expanded, and a passenger | crew's support position can be changed.

  In the vehicle seat S, the driving position of the actuator AC is adjusted by the operation of the controller based on the above-described operation, so that the support position by the support member 50 according to the body shape of the seated occupant, in other words, FIG. The bulge amount of the portion (the portion where the support member 50 is disposed) facing the vicinity of the portion below the base of the occupant's arm of the seat back S2 shown in FIG.

  In the present embodiment, since the guide portion 32 that guides the movement of the lower end 41 of the pressing member 40 and the concave portion 56A that guides the movement of the intermediate portion 43 are provided, the lower end 41 and the intermediate portion 43 are moved favorably. Can do. Thereby, the driveability of the side support devices 3L and 3R can be improved. Moreover, in this embodiment, since the guide surface 32A of the guide part 32 is inclined so as to face the occupant with respect to the front-rear direction, the guide surface 32A and the occupant face each other, and the pressing member 40 and the support member The occupant can be supported in a balanced manner through the 50 or the like. Further, in the present embodiment, since the intermediate portion 43 of the pressing member 40 is disposed so as to contact the bottom surface of the recess 56A, that is, near the center of the support member 50, the support member 50 is stably supported by the intermediate portion 43. Thus, the occupant can be supported stably.

  In the present embodiment, as shown in FIGS. 5 and 10, a bead 54 </ b> A having a thickness greater than that of other portions of the plate-like portion 54 is formed at the edge of the plate-like portion 54 of the support member 50. Therefore, damage to the cushion material 70 due to the rotation of the support member 50 can be suppressed. In the present embodiment, as shown in FIGS. 6A and 6B, in the pressing member 40, the pair of protruding portions 43 </ b> B first come into contact with the support member 50, and the bent portion 43 </ b> A hardly comes into contact. Therefore, it can suppress that a load is directly applied from the support member 50 with respect to 43 A of bending parts which deform | transform. Accordingly, the durability of the vehicle seat S including the side support drive mechanism 1 can be improved.

  In the vehicle seat S described above, as shown in FIG. 6A, the pressing member 40 does not protrude greatly with respect to the side frame 20 when the intermediate portion 43 is not bent. The side support devices 3L and 3R including 40 can be downsized from side to side. Further, as shown in FIG. 4, since the fixing member 30 has a size that can be disposed between the upper and lower supported portions 51 and 52 of the supporting member 50, the fixing member 30 and the pressing member 40 supported by the fixing member 30. That is, the configuration for driving the support member 50 can be made compact in the vertical direction. Accordingly, in the present embodiment, the side support devices 3L and 3R can be made compact as a whole.

  Further, in the vehicle seat S, as shown in FIG. 3, since the first cable 81 and the second cable 82 are connected, they can be handled as one cable, so that they extend from the actuator AC. The number of cables can be one. Moreover, since the actuator AC and the left side support device 3L are attached to the same left side frame 20L, the first cable 81 can be shortened. Further, in the present embodiment, one end portion of the first cable 81 is disposed so as to operate along the longitudinal direction of the left side frame 20L, and one end portion of the second cable 82 is disposed along the longitudinal direction of the right side frame 20R. Since it arrange | positions so that it may operate | move, the cables 81 and 82 can be arrange | positioned along the side frames 20L and 20R as a whole. Thus, the space for arranging the cables 81 and 82 in the vehicle seat S can be saved.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment. About a concrete structure, it can change suitably in the range which does not deviate from the meaning of this invention as follows.

  The configuration of the side support devices 3L and 3R shown in the embodiment is an example, and the present invention is not limited to the configuration of the embodiment. For example, in the above-described embodiment, the pressing member 40 and the support member 50 are fixed to the side frame 20 via the fixing member 30, but the pressing member and the supporting member are directly fixed to the side frame without providing the fixing member. It may be. In addition, since it is not necessary to provide the structure for attaching the pressing member 40 etc. to the metal side frame 20 by providing the fixing member 30 like the said embodiment, it is easy to make the structure of the side frame 20 simplified. can do.

  Moreover, in the said embodiment, although the pressing member 40 was comprised from one component, it is not limited to this, The pressing member may be comprised from two or more components. As an example, as shown in FIGS. 11A and 11B, the pressing member 40 is composed of two parts, ie, a pressing member lower part 40 </ b> A and a pressing member upper part 40 </ b> B, and the lower end 41 moves in a direction close to the upper end 42. The part that bends to the shaft part 44 may be configured such that the other is rotatably connected to the shaft part 44 formed on one of the pressing member lower part 40A and the pressing member upper part 40B. According to such a configuration, compared to a configuration in which the bent portion bends due to deformation, fatigue of the bent portion can be reduced, so that the durability of the pressing member 40 can be improved. Further, for example, as shown in FIG. 12, the support member 50 may be formed such that the reinforcing ribs 55 form a honeycomb structure.

  In the embodiment, the first cable 81 and the second cable 82 are two cables configured as separate parts. However, the present invention is not limited to this, and for example, FIGS. 13 (a) and 13 (b). As shown in FIG. 1, the first cable and the second cable may be a single cable 85 formed integrally. According to this, since the number of parts can be reduced, the assemblability of the side support drive mechanism 1 and the vehicle seat S can be improved, and the cost can be reduced. Supplementally, the cable 85 shown in FIG. 13 has an engaging portion 83 that is engaged with the pressing member 40 of the right side support device 3R at one end, and is engaged with the pressing member 40 of the left side support device 3L in the middle. The engaging portion 83 is provided. The cable 85 corresponds to the first cable of the present invention that can be called a first cable portion from the other end portion to which the actuator is connected to the engagement portion 83 in the middle portion, and from the engagement portion 83 in the middle portion to one end portion. The portion up to the engaging portion 83 corresponds to the second cable of the present invention which can be called a second cable portion.

  In the embodiment, as illustrated in FIG. 5, the configuration in which the rotation shaft of the support member 50 (the shaft portion 33 of the fixed member 30) is arranged on the rear side of the rear end of the side frame 20 is exemplified. The present invention is not limited to this. For example, the rotation shaft of the support member may be disposed at a position overlapping the rear end of the side frame when viewed from the left-right direction. This also makes it possible to increase the amount of rotation of the support member as compared with the configuration in which the rotation shaft is disposed in front of the rear end of the side frame.

  In the embodiment, as shown in FIG. 3, the second cable 82 is fastened to the pressure receiving member 10, but the present invention is not limited to this. For example, the second cable is fastened to the side frame 20. It may be arranged without being fastened. Moreover, in the said embodiment, although the 2nd cable 82 passed after the pressure receiving member 10, this invention is not limited to this, For example, even if the 2nd cable has passed under 40 of the pressure receiving member. Good. Also by this, it can suppress that a load applies to a 2nd cable from a passenger | crew. Moreover, in the said embodiment, although the plate-shaped pressure receiving member 10 was illustrated as a load receiving member, this invention is not limited to this, For example, a wire-like seat spring etc. may be sufficient.

  In the above embodiment, as shown in FIG. 2, the airbag apparatus AB is attached to the right side frame 20R and the actuator AC is attached to the left side frame 20L. However, the present invention is not limited to this, for example, The arrangement may be opposite to that of the above embodiment. The airbag device and the actuator may be attached to the same side frame. The actuator may be provided in the seat cushion S1 (see FIG. 1). In the above-described embodiment, the electric actuator AC is exemplified as the driving force generation device. However, the present invention is not limited to this, and for example, the driving force generation device winds a cable by turning a handle by an occupant. Or may be configured to be loosened.

  In the said embodiment, although the vehicle seat S used by a motor vehicle was illustrated as a vehicle seat, this invention is not limited to this, For example, the sheet | seat used for a ship, an aircraft, etc. It may be.

  In the embodiment, the first frame constitutes the left side frame 20L and the second frame constitutes the right side frame 20R. However, the present invention is not limited to this. For example, the first frame is the right side frame. And the second frame may constitute the left side frame. Further, for example, the first frame may constitute a seat cushion frame, and the second frame may constitute a seat back frame.

  In the said embodiment, the side support drive mechanism 1 was illustrated as a drive mechanism for vehicles. In other words, in the said embodiment, side support apparatus 3L, 3R was illustrated as a drive device. However, the present invention is not limited to this. For example, the drive device may be a device other than the side support device. Further, the first drive device and the second drive device may be devices having the same configuration (including a symmetric configuration) or may be devices having different configurations.

DESCRIPTION OF SYMBOLS 1 Side support drive mechanism 3L Left side support apparatus 3R Right side support apparatus 10 Pressure receiving member 20 Side frame 20L Left side frame 20R Right side frame 30 Fixing member 32 Guide part 40 Pressing member 41 Lower end 42 Upper end 43 Middle part 50 Support member 81 1st cable 82 Second cable 83 Engagement portion 84 Connection portion AC Actuator S Vehicle seat S2 Seat back

Claims (12)

A vehicle drive mechanism for driving a drive device by loosening a cable from being pulled or pulled by a drive force from a drive force generator,
A first cable and a second cable;
A first drive device that is driven by being loosened from a state in which one end portion of the first cable is engaged and the other end portion of the first cable is pulled or pulled;
A second drive device that is engaged by one end portion of the second cable and is driven by being loosened from a state in which the other end portion of the second cable is pulled or pulled;
A vehicle drive mechanism, wherein one end of the first cable and the other end of the second cable are connected. The first cable has an engaging portion for engaging one end of the first cable with the first driving device,
The second cable is configured to be engageable with the engagement portion, and a connection portion that connects the other end portion of the second cable to one end portion of the first cable when engaged with the engagement portion. The vehicle drive mechanism according to claim 1, wherein the vehicle drive mechanism is provided.   The vehicle drive mechanism according to claim 1, wherein the first cable and the second cable are integrally formed.   The direction in which one end of the first cable enters the first driving device and the direction in which the one end of the second cable enters the second driving device are the same. The vehicle drive mechanism according to any one of the above.   5. The vehicle according to claim 4, wherein the second cable is pulled out from the first drive device at a side opposite to a side where the first cable enters the first drive device. Drive mechanism. The vehicle includes a vehicle seat having a first frame and a second frame,
The other end of the first cable is connected to the driving force generator,
The driving force generating device and the first driving device are attached to the first frame,
The vehicle driving mechanism according to any one of claims 1 to 5, wherein the second driving device is attached to the second frame. The first cable is arranged to operate along a longitudinal direction of the first frame;
The vehicle drive mechanism according to claim 6, wherein the second cable is arranged to operate along a longitudinal direction of the second frame. One of the first frame and the second frame constitutes a left frame with a backrest, and the other constitutes a right frame with a backrest,
The vehicle seat is disposed between the first frame and the second frame, and has a load support member for supporting a load from an occupant,
The vehicle drive mechanism according to claim 6 or 7, wherein the second cable passes behind or under the load supporting member.   The vehicle drive mechanism according to claim 8, wherein the second cable is fastened to the load support member. At least one of the first driving device and the second driving device is movable in a direction in which one end to which one end of the cable is connected is moved closer to and away from the other end by the operation of the cable. A bending member that bends so that an intermediate portion between the one end and the other end protrudes in a predetermined direction when moving in a direction approaching the other end;
10. The vehicle drive according to claim 1, wherein the cable is disposed along the bending member on a side opposite to the predetermined direction with respect to the bending member. 11. mechanism. At least one of the first driving device and the second driving device has a moving member that moves by being pressed against the intermediate portion by bending of the bending member,
The vehicle drive mechanism according to claim 10, wherein the moving member is provided so as to cover an engagement portion between one end of the cable and the one end of the bending member.   The vehicle drive mechanism according to claim 11, further comprising a guide portion for guiding movement of the one end of the bending member.

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