JP2011213222A - Seat for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat for a vehicle capable of transmitting a drive force from a motor arranged at a front part side of a seat cushion to a recliner mechanism in a space-saving manner.SOLUTION: In the seat for the vehicle, one motor power unit 48 including a single motor and a clutch mechanism is arranged at the front part side of the seat cushion 12. A drive force transmission mechanism 58 for a recliner arranged between the one motor power unit 48 and the recliner mechanism 46 is arranged at only an end side of a seat width direction of the seat cushion 12 to transmit the drive force of the motor to the recliner mechanism 46 via a spindle 282 (bar material) rotatable around an axis along a seat longitudinal direction.

Description

  The present invention relates to a vehicle seat, and more particularly, to a vehicle seat in which a recliner mechanism is driven by a motor disposed on the front side of a seat cushion.

  In the vehicular 8-way power seat driving device disclosed in Patent Document 1 below, a motor is disposed in the seat portion. On the front side of this motor is a first clutch for adjusting the vertical direction of the front half of the seat, and on the rear side of the motor is a second clutch for adjusting the longitudinal movement of the entire seat, and for adjusting the vertical direction of the rear half of the seat And a fourth clutch for adjusting the raising / lowering of the backrest portion. A conduction belt is suspended around the clutch and the motor, and the driving force of the motor is transmitted to each clutch via the conduction belt. As a result, the clutches arranged apart from the front and rear of the seat portion are driven by a single motor.

JP-A-6-87363

  However, in the drive device configured as described above, conduction is performed between the motor disposed on the front side of the seat seat (seat cushion) and the backrest adjustment mechanism (recliner mechanism) disposed on the rear end of the seat cushion. Due to the arrangement of the belt or the like, there is a problem that the space in the seat cushion is eroded unnecessarily.

  An object of the present invention is to obtain a vehicle seat that can transmit a driving force from a motor disposed on the front side of a seat cushion to a recliner mechanism in a space-saving manner in consideration of the above facts.

  According to a first aspect of the present invention, a vehicle seat includes: a seat body having a plurality of driven mechanisms including a recliner mechanism disposed between a seat cushion and a seat back; and a front portion in the seat cushion. And a plurality of driving force transmission mechanisms that individually transmit the driving force of the motor to the plurality of driven mechanisms, wherein one of the plurality of driving force transmission mechanisms is the seat It has a bar that is arranged only at one end in the seat width direction inside the cushion and is rotatable about an axis along the longitudinal direction of the seat, and transmits the driving force of the motor to the recliner mechanism via the bar It is a bar rotating mechanism.

  In the vehicle seat according to claim 1, the driving force of the motor disposed on the front side in the seat cushion is individually applied to the plurality of driven mechanisms provided in the seat body by the plurality of driving force transmission mechanisms. Communicated.

  Here, the plurality of driven mechanisms include a recliner mechanism for reclining the seat back with respect to the seat cushion. The plurality of driving force transmission mechanisms include a bar rotation mechanism. This rod rotation mechanism is arranged only on one end side in the seat width direction in the seat cushion, and the drive force of the motor is transferred to the recliner mechanism via a rod that is rotatable about an axis along the seat longitudinal direction. introduce. As described above, since the driving force of the motor is transmitted to the recliner mechanism through the bar in the longitudinal direction of the seat, the driving force is transmitted from the motor disposed on the front side of the seat cushion to the recliner mechanism. This can be done in a space-saving manner.

  A vehicle seat according to a second aspect of the present invention is the vehicle seat according to the first aspect, wherein the bar is disposed on the outer side in the seat width direction with respect to the side frame of the seat cushion frame. It is a feature.

  In the vehicle seat according to claim 2, since the bar along the seat longitudinal direction is disposed on the outer side in the seat width direction with respect to the side frame of the seat cushion, the space on the inner side in the seat width direction relative to the side frame. This is preferable because it is not eroded unnecessarily by the arrangement space of the bar.

  A vehicle seat according to a third aspect of the present invention is the vehicle seat according to the first or second aspect, wherein the bar is supported by a side frame of a seat cushion frame. .

  In the vehicle seat according to claim 3, since the bar along the seat front-rear direction is supported by the side frame of the seat cushion frame extending in the seat front-rear direction, a dedicated bracket or the like for supporting the bar Can be omitted, and the support structure of the bar can be simplified.

  A vehicle seat according to a fourth aspect of the present invention is the vehicle seat according to any one of the first to third aspects, wherein the recliner mechanism includes a pair of left and right recliner units and the pair of recliner units. The recliner unit is connected, and has a connecting shaft that interlocks both by rotating around an axis along the seat width direction, and the bar rotation mechanism is attached to the rear end side of the bar The rod member via a first gear that rotates integrally with the rod member, and a second gear that meshes with the first gear and rotates about an axis along the sheet width direction when the first gear rotates. The driving force is transmitted to the connecting shaft.

  In the vehicle seat according to claim 4, when the bar rotates around the axis, the first gear is attached to the rear end side of the bar and rotates integrally with the bar, and meshed with the first gear, The rotational force of the bar is transmitted to the connecting shaft of the recliner mechanism via the second gear rotated around the axis along the seat width direction when the first gear rotates. Thereby, the transmission structure of the rotational force from the bar to the connecting shaft can be simplified.

  According to a fifth aspect of the present invention, a vehicle seat includes a seat body having a recliner mechanism disposed between a seat cushion and a seat back, a motor disposed on a front side in the seat cushion, It has a bar which is arranged only on one end side in the seat width direction in the seat cushion and is rotatable around an axis along the front-rear direction of the seat, and the driving force of the motor is sent to the recliner mechanism via the bar And a bar rotation mechanism for transmission.

  In the vehicle seat according to claim 5, the bar rotation mechanism includes a bar that is disposed only at one end side in the seat width direction in the seat cushion and is rotatable about an axis along the seat front-rear direction. The driving force of the motor disposed on the front side in the seat cushion is transmitted to the recliner mechanism via the bar. Thereby, transmission of the driving force from the motor arranged on the front side of the seat cushion to the recliner mechanism can be performed in a space-saving manner.

  As described above, in the vehicle seat according to the present invention, it is possible to transmit the rotational force from the motor disposed on the front side of the seat cushion to the recliner mechanism in a space-saving manner.

It is a perspective view which shows the structure of the principal part of the vehicle seat which concerns on embodiment of this invention. It is a perspective view which shows the structure of 1 motor power unit provided in the seat cushion of the vehicle seat shown by FIG. FIG. 3 is a perspective view showing the configuration of one motor power unit shown in FIG. 2 as viewed from an angle different from FIG. 2. It is a perspective view of the clutch mechanism which is a structural member of 1 motor power unit shown by FIG.2 and FIG.3. It is a disassembled perspective view which shows the partial structure of the clutch mechanism which is a structural member of 1 motor power unit shown by FIG.2 and FIG.3. It is a figure for demonstrating the operation method of the switch unit provided in the vehicle seat shown by FIG. 1, (A) is slide operation, (B) is front tilt operation, (C) is lift operation, (D ) Is a diagram corresponding to a recliner operation, and (E) is a diagram corresponding to a lumbar operation. FIG. 2 is a perspective view showing a configuration of a slide driving force transmission mechanism provided in the vehicle seat shown in FIG. 1. It is a perspective view which shows the speed-up gear train which is a structural member of the sliding drive force transmission mechanism shown by FIG. 7 shows a configuration of an outer side gear box that is a constituent member of the sliding drive force transmission mechanism shown in FIG. 7, (A) is a perspective view seen from the left side of the seat, and (B) is a perspective view seen from the right side of the seat. It is. The structure of the inner side gearbox which is a structural member of the sliding drive force transmission mechanism shown in FIG. 7 is shown, (A) is a perspective view seen from the right side of the seat, and (B) is a perspective view seen from the left side of the seat. It is. It is a perspective view which shows the structure of the driving force transmission mechanism for front tilts provided in the vehicle seat shown by FIG. FIG. 12A is a perspective view showing a configuration of a front tilt gear box that is a constituent member of the front tilt driving force transmission mechanism shown in FIG. 11, and FIG. 12B is a view of the front tilt gear box shown in FIG. It is a perspective view which shows the structure of the screw gearwheel which is a structural member, and a screw. It is a perspective view which shows the structure of the drive force transmission mechanism for lifters provided in the vehicle seat shown by FIG. (A) It is a perspective view which shows the structure of the gear box for lifters which is a structural member of the drive force transmission mechanism for lifters shown by FIG. 11, (B) is a structural member of the gear box for lifters shown by (A). It is a perspective view which shows the structure of a certain screw gear and a screw. It is a perspective view which shows the structure of the driving force transmission mechanism for lumbar provided in the vehicle seat shown in FIG. It is a perspective view which shows the structure of the principal part of the driving force transmission mechanism for lumbars shown by FIG. It is a perspective view which shows the structure of the recliner driving force transmission mechanism provided in the vehicle seat shown by FIG. It is a disassembled perspective view which shows the structure of the front side gear box which is a structural member of the drive force transmission mechanism for recliners shown by FIG. FIG. 18 is an exploded perspective view showing a configuration of peripheral members including a rear gear box and a speed increasing gear train, which are components of the recliner driving force transmission mechanism shown in FIG. 17.

  Hereinafter, with reference to FIGS. 1-19, the vehicle seat 10 which concerns on embodiment of this invention is demonstrated. In the figure, the arrow FR indicates the front direction of the seat, the arrow UP indicates the upward direction of the seat, the arrow LH indicates the left direction of the seat, and the arrow RH indicates the right direction of the seat. Further, in the vehicle seat 10, the seat lateral direction and the seat width direction are the same.

  As shown in FIG. 1, the vehicle seat 10 includes a seat cushion 12 and a seat back 16 that constitute a seat body. The seat cushion 12 has a seat cushion frame 14 that is a skeleton member, and the seat back 16 has a seat back frame 18 that is a skeleton member. The seat cushion frame 14 includes a pair of left and right side frames 20, 22 extending in the front-rear direction of the seat, a front frame 24 (see FIGS. 2 and 3) that connects the front portions of the pair of side frames 20, 22, and a pair The rear frames 26 are configured to connect the rear portions of the side frames 20 and 22 to each other. On the other hand, the seat back frame 18 includes a pair of left and right side frames 28 and 30 extending in the seat vertical direction, a lower frame 32 connecting lower portions of the pair of side frames 28 and 30, and upper portions of the pair of side frames 28 and 30. It is comprised including the upper frame 34 which connects mutually.

  The seat cushion frame 14 is attached with a seat cushion pad (not shown) covered with an outer skin, and the seat back frame 18 is attached with a seat back pad (not shown) covered with an outer skin. It is configured to be.

  The vehicle seat 10 is provided with a slide mechanism 36, a front tilt mechanism 38, a lifter mechanism 40, a lumbar mechanism 42, and a recliner mechanism 46 (all driven mechanisms). These driven mechanisms are configured to be driven by one motor power unit 48 shown in FIGS. 2 and 3, and a sliding driving force is transmitted between the one motor power unit 48 and each of the driven mechanisms. Mechanism 50 (see FIG. 7), front tilt driving force transmission mechanism 52 (see FIG. 11), lifter driving force transmission mechanism 54 (see FIG. 13), lumbar driving force transmission mechanism 56 (see FIG. 15), and recliner A driving force transmission mechanism 58 (see FIG. 17) is disposed. First, the 1 motor power unit 48 will be described.

(Configuration of one motor power unit 48)
As shown in FIGS. 2 and 3, the single motor power unit 48 is formed by unitizing a single motor 60 having a speed reducer and a clutch mechanism 62, and the seat cushion frame 14 via a bracket 64. The front frame 24 is attached.

  As shown in FIG. 4, the clutch mechanism 62 is formed in a columnar shape as a whole, and is arranged in a state in which the axial direction is along the sheet width direction, and a plurality (three in this case) arranged side by side in the sheet width direction. ) Clutch units 66, 68, and 70, and a movable shaft 72 (see FIG. 5, not shown in FIG. 4). The movable shaft 72 is disposed at the axial center of the clutch mechanism 62 in a state where the axial direction is along the seat width direction, and is urged to the right side of the seat (the cam 116 side described later) by the spring 73. The movable shaft 72 is provided with three reduced-diameter portions 72A, 72B, 72C obtained by reducing the outer diameter of the movable shaft 72. These reduced diameter portions 72A, 72B, 72C are arranged at substantially equal intervals in the axial direction of the movable shaft 72.

  On the other hand, the clutch units 66, 68 and 70 have basically the same configuration, but here, the clutch unit 68 disposed at the center will be described first. As shown in FIG. 5, the clutch unit 68 includes a pair of input shafts 74 and 76 that are arranged side by side in the sheet width direction with the axial direction along the sheet width direction. These input shafts 74 and 76 are formed in a substantially cylindrical shape, and are rotatably supported by the bracket 64 described above. Inside the input shafts 74 and 76, the above-described movable shaft 72 penetrates so as to be relatively movable along the axial direction.

  Between the input shafts 74 and 76, a pair of annular brackets 78 and 80 and a plurality (three in this case) of pins 82 are arranged. The annular brackets 78 and 80 are formed in a substantially disk shape, and are disposed so as to be back-to-back with each other in a state where the axial direction is along the sheet width direction. Each of the annular brackets 78 and 80 has a circular through hole formed in the axial center thereof, and the movable shaft 72 passes through these through holes concentrically.

  Further, the three pins 82 are arranged at equal intervals in the circumferential direction of the movable shaft 72 with the axial direction along the seat width direction, and the central portions in the axial direction are formed in the annular brackets 78 and 80. It is fitted in the through hole. One end in the axial direction of the three pins 82 is fitted into a circular hole (not shown) formed in the end face of one input shaft 74, and the other end in the axial direction of the three pins 82 is the other input shaft 76. Is fitted in a circular hole (not shown) formed on the end face of the. Thereby, the input shafts 74 and 76 are connected through the three pins 82 so as not to be relatively rotatable, and the annular brackets 78 and 80 are supported by the input shafts 74 and 76 through the three pins 82.

  Further, a slide drive gear 84 (rotating body) is attached to one input shaft 74. The slide drive gear 84 is formed in a cylindrical shape and is arranged in a state where the axial direction is along the sheet width direction, and a part of the input shaft 74 is fitted inside the one axial side. Thereby, the slide drive gear 84 is rotatably supported by the input shaft 74. External teeth are formed on the outer peripheral portion on one side in the axial direction of the slide drive gear 84, and internal teeth are formed on the inner peripheral portion on the other side in the axial direction of the slide drive gear 84.

  A front tilt drive gear 86 (rotary body) is attached to the other input shaft 76. The front tilt drive gear 86 is formed in a cylindrical shape similar to the slide drive gear 84, and is disposed in a state where the axial direction is along the sheet width direction. However, the front tilt drive gear 86 is arranged in a direction opposite to the slide drive gear 84 (in a back-to-back state). A part of the input shaft 76 is fitted on the inner side of the front tilt drive gear 86 in the axial direction, whereby the front tilt drive gear 86 is rotatably supported by the input shaft 76. External teeth are formed on the outer peripheral portion on one side in the axial direction of the front tilt drive gear 86, and internal teeth are formed on the inner peripheral portion on the other side in the axial direction of the front tilt drive gear 86.

  A pair of pawls 88 are disposed inside the slide drive gear 84. These pawls 88 are rotatably attached to one end side in the axial direction of two pins 82 among the three pins 82 described above. A pair of pawls 90 are arranged inside the front tilt drive gear 86. These pawls 90 are rotatably attached to the other axial end of the two pins 82 described above. These pawls 88 and 90 are urged to one side around the axis of the pin 82 by a torsion coil spring 92, and one end part thereof is in contact with the outer peripheral part of the movable shaft 72 by the contact urging force.

  Here, when the movable shaft 72 is moved in the axial direction so that one end portion of the pawl 88 faces the reduced diameter portion 72B of the movable shaft 72, the pawl 88 rotates around the pin 82 by the biasing force of the torsion coil spring 92. The other end side of the pawl 88 is engaged with the inner teeth of the slide drive gear 84. When the input shaft 74 rotates in this state, the rotational force of the input shaft 74 is transmitted to the slide drive gear 84 via the pin 82 and the pawl 88.

  Further, when the movable shaft 72 moves in the axial direction so that one end portion of the pawl 90 faces the reduced diameter portion 72B of the movable shaft 72, the pawl 90 rotates around the pin 82 by the biasing force of the torsion coil spring 92, The other end of the pawl 90 meshes with the inner teeth of the front tilt drive gear 86. When the input shaft 76 rotates in this state, the rotational force of the input shaft 76 is transmitted to the front tilt drive gear 86 via the pin 82 and the pawl 90.

  The clutch unit 68 configured as described above is disposed between the clutch units 66 and 70, as shown in FIG. The clutch unit 66 disposed on the right side of the clutch unit 68 has basically the same configuration as the clutch unit 68, but includes a lifter drive gear 94 (rotary body) instead of the slide drive gear 84. Instead of the front tilt drive gear 86, a recliner drive gear 96 (rotating body) is provided.

  On the other hand, the clutch unit 70 disposed on the left side of the clutch unit 68 has basically the same configuration as the clutch unit 68, but includes a lumbar drive gear 98 (rotary body) instead of the slide drive gear 84. A cover 100 is attached instead of the front tilt drive gear 86 (one gear is omitted. Note that a gear similar to the front tilt drive gear 86 can be added instead of the cover 100. Is).

  In the clutch units 66, 68, 70, input shafts (input shafts basically configured in the same manner as the input shafts 74, 76) arranged inside the drive gears are connected to each other so as not to rotate relative to each other. The motor 60 is connected to the output shaft of the motor 60 via a cylindrical motor connecting member 102. Accordingly, the rotational force of the motor 60 is transmitted to the input shafts, and the transmission path of the rotational force between the drive gears and the motor 60 is switched by the movement of the movable shaft 72 in the axial direction. Yes.

  Specifically, when the movable shaft 72 is moved in the axial direction and the reduced diameter portion 72B corresponding to the clutch unit 68 faces the pawl 88 disposed inside the slide drive gear 84, the contact pawl 88 slides. The drive gear 84 meshes with the internal teeth, and the rotational force of the motor 60 is transmitted to the slide drive gear 84. When the reduced diameter portion 72B faces the pawl 90 disposed inside the front tilt drive gear 86, the contact pawl 90 is engaged with the inner teeth of the front tilt drive gear 86, and the rotational force of the motor 60 is increased by the front tilt. It is transmitted to the drive gear 86.

  Similarly, when the reduced diameter portion 72A corresponding to the clutch unit 66 is opposed to a pawl (not shown) disposed inside the lifter drive gear 94, the contact pawl is engaged with an internal tooth (not shown) of the lifter drive gear 94, and the motor 60 Is transmitted to the lifter drive gear 94. When the reduced diameter portion 72A faces a pawl (not shown) arranged inside the recliner drive gear 96, the contact pawl is engaged with an internal tooth (not shown) of the recliner drive gear 96, and the rotational force of the motor 60 is driven by the recliner drive. It is transmitted to the gear 96. Further, when the reduced diameter portion 72C of the movable shaft 72 corresponding to the clutch unit 70 faces a pawl (not shown) disposed inside the lumbar drive gear 98, the contact pawl is engaged with the inner teeth of the lumbar drive gear 98, and the motor The rotational force of 60 is transmitted to the lumbar drive gear 98.

  The above-described movable shaft 72 is configured to be moved in the axial direction by the switch unit 104 (see FIGS. 2 and 3) attached to the side frame 22 on the right side (outer side) of the seat cushion frame 14. The switch unit 104 includes a switch knob 106 attached to the side frame 22. The switch knob 106 includes a rotation knob 108 that is rotatable about an axis along the sheet width direction.

  The rotation of the rotary knob 108 is transmitted to the cam 116 via the gears 112 and 114, and the cam 116 is rotated around the axis along the sheet width direction. The cam 116 is provided with an inclined surface 116A (see FIG. 3). The inclined surface 116A has a tip of a small diameter portion 72D (see FIG. 5) provided coaxially on one end side in the axial direction of the movable shaft 72. Are in contact. For this reason, when the cam 116 is rotated about the axis, the inclined surface 116A is in sliding contact with the tip of the small diameter portion 72D, so that the movable shaft 72 is moved in the axial direction. Thus, the seated occupant can move the movable shaft 72 in the axial direction by rotating the rotary knob 108, and the transmission path of the rotational force between the drive gears of the clutch mechanism 62 and the motor 60 can be established. It can be switched selectively.

  Specifically, in a state where the rotation knob 108 is disposed at the position shown in FIG. 6A, it becomes possible to transmit the rotational force between the slide drive gear 84 and the motor 60, and FIG. In the state where the rotary knob 108 is disposed at the position shown in FIG. 6, the rotational force can be transmitted between the front tilt drive gear 86 and the motor 60, and the rotary knob 108 is placed at the position shown in FIG. In the disposed state, rotational force can be transmitted between the lifter drive gear 94 and the motor 60, and in the state where the rotation knob 108 is disposed at the position shown in FIG. 6D, the recliner drive gear 96 is provided. 6 and the motor 60 can be transmitted, and when the rotary knob 108 is disposed at the position shown in FIG. 6E, the rotational force is transmitted between the lumbar drive gear 98 and the motor 60. Communication is possible.

  Further, as shown in FIG. 2, a translation knob 110 is slidably attached to the rotary knob 108 described above. The translation knob 110 is connected to a switch (not shown), and the switch is electrically connected to the motor 60. Thus, when the translation knob 110 is slid to one side with respect to the rotation knob 108, the motor 60 rotates in the forward direction, and when the translation knob 110 is slid to the other side with respect to the rotation knob 108, the motor 60 is reversed. It has become.

Next, the slide driving force transmission mechanism 50 that transmits the driving force from the above-described one motor power unit 48 to the slide mechanism 36 will be described.
(Configuration of slide driving force transmission mechanism 50)
As shown in FIG. 7, the slide mechanism 36 to which the slide driving force transmission mechanism 50 transmits the driving force includes a slide rail 120. The slide rail 120 is slidably attached to the pair of left and right lower frames 122 and 124 fixed to the vehicle body floor, and the lower frames 122 and 124, and the side frames 20 and 22 of the seat cushion frame 14 (see FIG. 7 is omitted), and the vehicle seat 10 is slidable in the longitudinal direction of the seat relative to the vehicle body floor.

  A front link 218 is disposed between the right upper frame 128 and the clutch mechanism 62. The front link 218 constitutes a lifter mechanism 40 described later, and the front end side (lower end side) is rotatably connected to the front end side of the upper frame 128. A shaft 130 is attached to the rear end side (upper end side) of the front link 218. The shaft 130 is arranged in a state where the axial direction is along the seat width direction, and protrudes inward in the seat width direction from the front link 218. One end of the shaft 130 in the axial direction is supported rotatably with respect to the front link 218, and a gear 132 is fixed to the other end of the shaft 130 in the axial direction. The gear 132 is meshed with the external teeth of the slide drive gear 84 described above. Therefore, when the slide drive gear 84 rotates, the gear 132 rotates integrally with the shaft 130 around the axis.

  One end of the shaft 130 in the axial direction protrudes to the opposite side of the clutch mechanism 62 via the front link 218, and a gear 136 constituting the speed increasing gear train 134 shown in FIG. It is fixed. The speed increasing gear train 134 speeds up the rotation of the gear 136 and transmits it to the gear 138 disposed at the front end of the front link 218. The gear 138 corresponds to the transmission gear train 142 shown in FIG. The speed increasing gear train 134 is covered with a cover 140 (see FIG. 8) attached to the front link 218.

  The transmission gear train 142 is attached to an outer gear box 144 attached to the front end portion of the upper frame 128, and includes a gear 146 that rotates coaxially and integrally with the gear 138 of the speed increasing gear train 134. . The rotation of the gear 146 is transmitted to a gear 148 that is provided at the upper end portion of the outer side gear box 144 and forms the transmission gear train 142. A screw gear 150 (see FIG. 9B) is coaxially arranged on the outer side of the gear 148 in the sheet width direction, and the gear 148 and the screw gear 150 rotate integrally.

  Another screw gear 152 meshed with the screw gear 150 is arranged below the screw gear 150. The screw gear 152 is fixed to the front end portion of the outer screw 154. The outer side screw 154 is a long bar-like member having a male thread formed on the outer peripheral portion, and is disposed on the upper side of the upper frame 128 in a state where the axial direction is along the seat front-rear direction. The front end portion of the outer side screw 154 is rotatably supported by the outer side gear box 144, and the rear end portion of the outer side screw 154 is rotatable by a support member 156 attached to the rear end portion of the upper frame 128. It is supported by. Further, an outer side nut 158 formed in a substantially block shape is screwed into an intermediate portion of the outer side screw 154, and the outer side nut 158 is fixed to the lower frame 124 via a bracket 160.

  On the other hand, one end of the torque cable 164 shown in FIG. 7 is connected to the gear 162 (see FIG. 9A) of the transmission gear train 142 described above. The torque cable 164 is arranged with the axial direction along the seat width direction, and the other axial end is inserted into an inner gear box 166 attached to the front end of the inner upper frame 126. Yes. A transmission gear train 168 is disposed in the inner gear box 166 as shown in FIG. 10A, and the gear 170 constituting the transmission gear train 168 is disposed at one end of the torque cable 164 in the axial direction. It is connected. As a result, the rotation of the gear 162 is transmitted to the gear 170 via the torque cable 164. The rotation of the gear 170 is transmitted to a gear 172 provided at the upper end of the inner gear box 166. A screw gear 174 is coaxially arranged on the outer side of the gear 172 in the sheet width direction, and the gear 172 and the screw gear 174 rotate integrally.

  Another screw gear 176 meshed with the screw gear 174 is disposed below the screw gear 174. The screw gear 176 is fixed to the front end portion of the inner side screw 178. The inner side screw 178 is a member similar to the outer side screw 154, a front end portion is rotatably supported by the inner side gear box 166, and a rear end portion is a support member 180 attached to the rear end portion of the upper frame 126. Is rotatably supported. Further, an inner side nut 182 formed in a substantially block shape is screwed into an intermediate portion of the outer side screw 154, and the inner side nut 182 is fixed to the lower frame 122 via a bracket 184.

  Here, when the translation knob 110 is slid in a state where the aforementioned rotation knob 108 is disposed at the position shown in FIG. 6A, the rotational force of the motor 60 is transmitted to the slide drive gear 84, and slide drive is performed. The gear 84 rotates. The rotation of the slide drive gear 84 is transmitted to the outer screw 154 via the gear 132, the shaft 130, the speed increasing gear train 134, the transmission gear train 142, and the screw gears 150 and 152, and the torque cable 164 is transmitted. It is transmitted to the inner screw 178 via the gear train 168 and screw gears 174 and 176. Thus, when the outer side screw 154 and the inner side screw 178 rotate about the axis, the outer side nut 158 moves relative to the outer side screw 154 in the axial direction, and the inner side nut 182 moves relative to the inner side screw 178. Move relative to the axis. As a result, the upper rail 128 is slid with respect to the lower rail 124 to which the outer side nut 158 is fixed, and the upper rail 126 is slid with respect to the lower rail 122 to which the inner side nut 182 is fixed. Slide back and forth with respect to the part.

  In this case, when the translation knob 110 is operated in the arrow FORWARD direction in FIG. 6A, the vehicle seat 10 is slid to the front side of the vehicle, and the translation knob 110 is operated in the arrow BACK direction in FIG. Then, the vehicle seat 10 is slid to the vehicle rear side.

  Next, the front tilt driving force transmission mechanism 52 that transmits the driving force from the one motor power unit 48 to the front tilt mechanism 38 will be described.

(Configuration of Front Tilt Driving Force Transmission Mechanism 52)
As shown in FIG. 11, the front tilt mechanism 38 to which the front tilt driving force transmission mechanism 52 transmits the driving force is a plate-like cushion front frame 186 (between the front portions of the side frames 20, 22). 1). Connecting members 188 and 190 are fixed to the left and right sides of the rear end side of the cushion front frame 186, and these connecting members 188 and 190 are rotatably connected to the side frames 20 and 22 via pins 192. Has been.

  A front tilt gear box 194 constituting the front tilt driving force transmission mechanism 52 is disposed below the cushion front frame 186 and on the front side of the clutch mechanism 62 in the seat. The front tilt gear box 194 is fixed to a bracket 64 shown in FIGS. A pair of gears 196 and 198 arranged in the front-rear direction of the seat are arranged in mesh with each other on the inner side in the seat width direction of the front tilt gear box 194. These gears 196 and 198 are rotatably supported by the front tilt gear box 194 in a state where the axial direction is along the sheet width direction.

  The rear gear 196 is meshed with the front tilt drive gear 86 described above, and the front gear 198 is connected to a screw gear 200 (see FIG. 12A) disposed in the front tilt gear box 194. Has been. The screw gear 200 is rotatably supported by the front tilt gear box 194, and another screw gear 202 is engaged with the screw gear 200. The screw gear 202 is formed in a cylindrical shape, and is supported so as not to move relative to the front tilt gear box 194 in the axial direction and to rotate about the axis. A female screw is formed inside the screw gear 202, and a screw 204 having a male screw formed on the outer peripheral portion is screwed to the female screw. A flat plate-like connecting portion 204A is provided on the upper end side of the screw 204, and the connecting portion 204A is connected to the front end portion of the outer side arm 206 constituting the front tilt mechanism 38 via a pin. . The outer side arm 206 is paired with the inner side arm 208, and the rear ends of the outer side arm 206 are attached to the front frame 24 of the seat cushion frame 14 so as to be rotatable about an axis along the seat width direction. It has been. Each of the outer side arm 206 and the inner side arm 208 is connected in the seat width direction via the connecting rod 210, and each front end side is connected to the lower surface of the cushion front frame 186 via the brackets 212 and 214. Yes.

  Here, when the translation knob 110 is slid in a state where the rotation knob 108 is disposed at the position shown in FIG. 6B, the rotational force of the motor 60 is transmitted to the front tilt drive gear 86, and the front The tilt drive gear 86 rotates. The rotation of the front tilt drive gear 86 is transmitted to the screw gear 202 via the gears 196 and 198 and the screw gear 200, and the screw gear 202 rotates. When the screw gear 202 rotates, the screw 204 screwed inside the screw gear 202 is moved in the axial direction (substantially up and down direction) with respect to the screw gear 202. Accordingly, the front end sides of the outer side arm 206 and the inner side arm 208 are swung up and down around the front frame 24, and the cushion front frame 186 is swung up and down around the pin 192. Thereby, the inclination angle of the front side of the seat surface of the seat cushion 12 is adjusted.

  In this case, when the translation knob 110 is operated in the arrow UP direction in FIG. 6B, the inclination angle of the seat cushion 12 on the front side of the seating surface is increased, and the translation knob 110 is moved in the direction of the arrow DOWN in FIG. When operated in the direction, the inclination angle of the seat cushion 12 on the front side of the seating surface is reduced.

  Next, the front lifter driving force transmission mechanism 54 that transmits the driving force from the one motor power unit 48 to the lifter mechanism 40 will be described.

(Configuration of lifter driving force transmission mechanism 54)
As shown in FIG. 13, the lifter mechanism 40 to which the lifter driving force transmission mechanism 54 transmits a driving force includes a pair of left and right front links 216 and 218 and a pair of left and right rear links 220 and 222. The front links 216 and 218 and the rear links 220 and 222 can rotate around the axis along the seat width direction with respect to the upper frames 126 and 128 (not shown in FIG. 13) of the slide rail 120 on the front end side (lower end side). The rear end side (upper end side) is connected to the side frames 20 and 22 of the seat cushion frame 14 so as to be rotatable around an axis along the seat width direction.

  Between the right front link 218 and the clutch mechanism 62, a lifter gear box 224 constituting the lifter driving force transmission mechanism 54 is disposed. The lifter gear box 224 is fixed to the bracket 64 shown in FIGS. A pair of gears 226 and 228 arranged in the front-rear direction of the seat are disposed on the outer side in the seat width direction of the lifter gear box 224 in a state of being engaged with each other. These gears 226 and 228 are rotatably supported by the lifter gear box 224 in a state where the axial direction is along the seat width direction.

  The front gear 226 is meshed with the above-described lifter drive gear 94, and the rear gear 228 is connected to a screw gear 230 (see FIG. 14A) disposed in the lifter gear box 224. Yes. The lifter gear box 224 has the same configuration as the front tilt gear box 194 described above. When the screw gear 230 rotates, the screw gear 232 meshed with the screw gear 230 rotates and the screw 234 rotates. The screw gear 232 is moved in the axial direction (substantially the seat front-rear direction here). A flat plate-like connecting portion 234A is provided at the rear end portion of the screw 234, and the front end portion of the connecting pipe 236 is fixed to the connecting portion 234A. The rear end portion of the connection pipe 236 is rotatably connected to the upper end portion (rear end portion) of the right rear link 222 via a pin (not shown).

  Here, when the translation knob 110 is slid in a state where the rotary knob 108 is disposed at the position shown in FIG. 6C, the rotational force of the motor 60 is transmitted to the lifter drive gear 94, and the lifter drive is performed. The gear 94 rotates. The rotation of the lifter drive gear 94 is transmitted to the screw 234 via the gears 226 and 228 and the screw gears 230 and 232, and the screw 234 is moved in the axial direction (substantially the seat front-rear direction) with respect to the screw gear 232. . As a result, the connecting pipe 236 is moved substantially in the front-rear direction of the seat, the rear link 222 is swung up and down about the front end side (lower end side), and the rear link 220 and the front link are interlocked with the rear link 222. The links 216 and 218 are swung up and down around each front end side. Thereby, the seat cushion frame 14 is moved up and down, and the seat surface height of the seat cushion 12 is adjusted in the up and down direction.

  In this case, when the translation knob 110 is operated in the arrow UP direction in FIG. 6C, the seat surface of the seat cushion 12 is raised, and the translation knob 110 is operated in the arrow DOWN direction in FIG. Then, the seat surface of the seat cushion 12 is lowered.

  Next, the lumbar driving force transmission mechanism 56 that transmits the driving force from the one motor power unit 48 to the lumbar mechanism 42 will be described.

(Configuration of lumbar driving force transmission mechanism 56)
As shown in FIG. 15, the lumbar mechanism 42 to which the lumbar driving force transmission mechanism 56 transmits the driving force includes a wire 238 whose one end is locked to the left side frame 28 of the seat back frame 18. . An intermediate portion of the wire 238 is wound around the rear side of the flat mat 240 of the seat back 16 and is drawn out from between the right side frame 30 and the flat mat 240 to the front side of the seat back frame 18. An intermediate portion of the wire 238 pulled out to the front side of the seat back frame 18 is inserted inside a wire tube 242 whose one end is locked to the side frame 30. The other end of the wire tube 242 is disposed in the seat cushion 12 (not shown in FIG. 15), and the other end of the wire 238 extends from the other end of the wire tube 242 disposed behind the clutch mechanism 62. Has been pulled out. The other end of the wire 238 is locked to a screw 246 provided in the lumbar gear box 244.

  The lumbar gear box 244 has basically the same structure as the front tilt gear box 194 and the lifter gear box 224 described above, and the gear meshed with the lumbar drive gear 98 as shown in FIG. The rotation of H.248 is transmitted to the screw 246 via a gear 250 disposed on the lower side of the gear 248 and a pair of screw gears (not shown), and the screw 246 is moved in the seat longitudinal direction. The rear end side of the screw 246 is connected to the bracket 64 shown in FIGS. 2 and 3 via a link 252 that functions as a rotation stop of the screw 246, and the other end of the wire 238 is connected to the rear end portion of the screw 246. The end is locked.

  Here, when the translation knob 110 is slid in a state where the rotation knob 108 described above is disposed at the position shown in FIG. 6E, the rotational force of the motor 60 is transmitted to the lumbar drive gear 98 to drive the lumbar. The gear 98 rotates. The rotation of the lumbar drive gear 98 is transmitted to the screw 246 via gears 248 and 250 and a screw gear (not shown), and the screw 246 is moved substantially in the front-rear direction of the seat. As a result, the wire 238 whose other end is locked to the rear end portion of the screw 246 is pushed and pulled, and the flat mat 240 with the intermediate portion of the wire 238 wound around the rear side is swung in the front-rear direction of the seat back 16. Moved. As a result, the lower side of the seat back 16 is moved back and forth, and lumbar adjustment is performed.

  In this case, when the translation knob 110 is operated in the arrow FORWARD direction in FIG. 6E, the lower side of the backrest surface of the seat back 16 is pushed out to the front side of the seat back 16, and the translation knob 110 is moved in FIG. When operated in the direction of the arrow BACK in E), the lower side of the backrest surface of the seat back 16 is retracted to the rear side of the seat back 16.

  Next, a recliner driving force transmission mechanism 58 (bar material rotating mechanism) that transmits a driving force from the one motor power unit 48 to the recliner mechanism 46 will be described.

(Configuration of Recliner Driving Force Transmission Mechanism 58)
As shown in FIG. 17, the recliner mechanism 46 to which the recliner driving force transmission mechanism 58 transmits the driving force includes an outer side recliner unit 254 and an inner side recliner unit 256 (a pair of left and right recliner units). Yes. The outer side recliner unit 254 is disposed between the side frame 22 and the side frame 30 on the right side (outer side) of the vehicle seat 10, and the inner side recliner unit 256 is disposed on the left side (inner side) of the vehicle seat 10. The side frame 20 is disposed between the side frame 20 and the side frame 28. The recliner mechanism 46 includes a connecting shaft 258 that is spanned between the outer side recliner unit 254 and the inner side recliner unit 256.

  The recliner mechanism 46 described above is well known in the art, and is provided in the outer side recliner unit 254 and the inner side recliner unit 256 when the connecting shaft 258 is rotated around an axis along the seat width direction. The planetary gear mechanism that does not rotate rotates and the seat back frame 18 reclines with respect to the seat cushion frame 14.

  A recliner driving force transmission mechanism 58 is disposed between the outer side recliner unit 254 and the one motor power unit 48. The recliner driving force transmission mechanism 58 includes a front gear box 260 and a rear gear box 262 that are disposed on the outer side in the seat width direction with respect to the side frame 22 (see FIG. 1). The front gear box 260 is fixed to the front end side of the side frame 22 at the side of the clutch mechanism 62 by screws 261 (see FIG. 18), and the rear gear box 262 is a frame 264 of the outer side recliner unit 254 ( It is fixed by a screw 263 to the front end side of FIG. The frame 264 is fixed to the rear end portion of the side frame 22.

  As shown in FIG. 18, the front gear box 260 is formed in a box shape by fastening an outer side box 266 and an inner side box 268 with screws 270. Are arranged with an upper screw gear 272 and a lower screw gear 274 which are meshed with each other. The upper screw gear 272 is arranged in a state where the axial direction is along the sheet width direction, and is fixed to one end portion in the axial direction of the shaft 276 which is also arranged in a state where the axial direction is along the sheet width direction. The shaft 276 is rotatably supported by a bearing hole 278 formed in the outer side box 266 and a bearing hole (not shown) formed in the inner side box 268. The other axial end of the shaft 276 protrudes from the inner box 268 toward the inner side in the seat width direction (clutch mechanism 62 side), and a gear 280 is attached to the other axial end of the shaft 276. The gear 280 is meshed with the recliner drive gear 96 described above. Thereby, the rotational force of the recliner drive gear 96 is transmitted to the screw gear 272 via the gear 280 and the shaft 276.

  On the other hand, the lower screw gear 274 meshed with the screw gear 272 is arranged in a state where the axial direction is along the seat longitudinal direction, and is fixed to the front end portion (one axial end portion) of the spindle 282 which is a bar. ing. The spindle 282 is formed in a long cylindrical shape and is disposed on the outer side in the seat width direction with respect to the side frame 22 as shown in FIG. The spindle 282 is disposed in the seat cushion 12 with the axial direction along the front-rear direction of the seat, and is supported by the side frame 22 via the front gear box 260 and the rear gear box 262. In the present embodiment, the spindle 282 is disposed in a slightly inclined state with respect to the front-rear direction of the seat so as to gradually descend toward the front end side. Further, in the present embodiment, the spindle 282 is provided only on the side frame 22 side (one end side in the seat width direction) in the seat cushion 12, and the side frame 20 side (the other end side in the seat width direction) in the seat cushion 12. ) Is not provided with a spindle.

  A front end portion of the spindle 282 is rotatably supported by a pair of front and rear bearing portions 284 and 286 provided in the front gear box 260. The bearing portion 284 is formed by combining a semicircular concave portion 288 formed in the outer side box 266 and a semicircular concave portion 290 formed in the inner side box 268. The portion 286 is formed by combining a semicircular recess (not shown) formed in the outer box 266 and a semicircular recess 292 formed in the inner box 268. A ring-shaped cover 294 is attached to the front side of the bearing portion 284, and a similar cover 296 is attached to the rear side of the bearing portion 286.

  As shown in FIG. 19, the rear end portion of the spindle 282 is inserted into the rear gear box 262 and is rotatably supported by the rear gear box 262. The rear gear box 262 has basically the same configuration as the front gear box 260, and is disposed on the inner side in the seat width direction with respect to the frame 264 of the outer side recliner unit 254. In FIG. 19, in the rear gear box 262, the same reference numerals are given to the same configurations as those of the front gear box 260.

  A screw gear 298 (first gear) is fixed to a rear end portion of the spindle 282 inserted inside the rear gear box 262, and the screw gear 298 is disposed below the screw gear 298. It is meshed with another screw gear 300 (second gear). The screw gear 300 is arranged in a state where the axial direction is along the sheet width direction, and is fixed to an intermediate portion in the axial direction of the shaft 302 which is also arranged in a state where the axial direction is along the sheet width direction. One end of the shaft 302 in the axial direction is rotatably supported by the inner side box 268 of the rear gear box 262, and the other end in the axial direction is rotatably supported by the outer side box 266 of the rear gear box 262. Has been. Further, the other axial end of the shaft 302 passes through the frame 264 of the outer recliner unit 254 and protrudes outward in the seat width direction of the frame 264.

  A reduction gear train 304 is disposed outside the frame 264 in the seat width direction, and a gear 306 constituting the reduction gear train 304 is fixed to the protruding portion of the shaft 302. The rotation of the gear 306 is transmitted to the final gear 312 of the reduction gear train 304 via the gears 308 and 310. The gear 312 is fixed to one end of the connecting shaft 258 in the axial direction. The gears 308 and 310 are arranged coaxially and are rotatably supported by a support shaft 314 provided on the frame 264. Further, the gears 306, 308, 310, and 312 of the reduction gear train 304 include a long plate-like holding plate 316 that is connected to the shaft 302, the support shaft 314, and the connecting shaft 258 by a locking tool 318 (for example, an E ring). By being locked, the shaft 302, the support shaft 314, and the connecting shaft 258 are held.

  Here, when the translation knob 110 is slid in a state where the rotation knob 108 described above is disposed at the position shown in FIG. 6D, the rotational force of the motor 60 is transmitted to the recliner drive gear 96 to drive the recliner. The gear 96 rotates. The rotation of the recliner drive gear 96 is transmitted to the spindle 282 via the gear 280, the shaft 276, and the screw gears 272 and 274, and the spindle 282 is rotated around the axis along the seat front-rear direction. When the spindle 282 is rotated, the screw gear 298 fixed to the rear end portion of the spindle 282 rotates, and the screw gear 300 meshed with the screw gear 298 is integrated with the shaft 302 and the gear 306 of the reduction gear train 304. Rotate. The rotation of the gear 306 is decelerated by the reduction gear train 304 and transmitted to the final gear 312, and the gear 312 is rotated integrally with the connecting shaft 258. As a result, the outer side recliner unit 254 and the inner side recliner unit 256 are operated, and the seat back frame 18 is reclined with respect to the seat cushion frame 14.

  In this case, when the translation knob 110 is operated in the arrow FORWARD direction of FIG. 6D, the seat back frame 18 is tilted forward with respect to the seat cushion frame 14, and the translation knob 110 is moved to the position shown in FIG. ) In the arrow BACK direction, the seat back frame 18 is tilted backward with respect to the seat cushion frame 14.

  Next, the operation and effect of this embodiment will be described.

(Operation and effect of this embodiment)
In the vehicle seat 10 having the above-described configuration, the one motor power unit 48 including the single motor 60 and the clutch mechanism 62 is disposed on the front portion side of the seat cushion 12. That is, since the one motor power unit 48 is disposed on the front side having a relatively large space in the seat cushion 12, the seat cushion 12 is enlarged in order to secure a space for arranging the one motor power unit 48. Can be avoided.

  Moreover, the recliner driving force transmission mechanism 58 disposed between the one motor power unit 48 and the recliner mechanism 46 transmits the rotational force of the recliner driving gear 96 of the clutch mechanism 62 via the spindle 282 along the seat longitudinal direction. This is transmitted to the recliner mechanism 46. Thus, the rotational force of the recliner driving gear 96, that is, the driving force of the motor 60 is transmitted to the recliner mechanism 46 via the spindle 282 (bar material) along the seat longitudinal direction. The driving force can be transmitted from the motor 60 disposed on the section side to the recliner mechanism 46 in a space-saving manner.

  Further, in the vehicle seat 10, the spindle 282 along the seat front-rear direction is disposed only at one end side in the seat width direction within the seat cushion 12, and thus the seat within the seat cushion 12 on which a cushion pad or the like is disposed. It is preferable that the space on the center side in the width direction and the space on the other end side in the sheet width direction are not eroded unnecessarily.

  Further, in the vehicle seat 10, the spindle 282 is disposed on the outer side in the seat width direction with respect to the side frame 22 of the seat cushion frame 14, so that the space on the inner side in the seat width direction relative to the side frame 22 is disposed on the spindle 282. It is preferred that it is not eroded unnecessarily by the space.

  Furthermore, in the vehicle seat 10, the spindle 282 extending in the front-rear direction of the seat is supported by the side frame 22 of the seat cushion frame 14 extending in the front-rear direction of the seat. The bracket or the like can be omitted. Thereby, the support structure of the spindle 282 can be simplified.

  In the vehicle seat 10, since the driving force is transmitted by the spindle 282, it is possible to transmit the driving force smoothly with minimal noise. Thereby, the quietness at the time of operation of the recliner mechanism 46 can be improved. That is, for example, when a driving force is transmitted from the front side to the rear side of the seat cushion 12 using a chain, a gear, or the like, silence is deteriorated due to abnormal noise generated by the chain, the gear, etc., but the vehicle seat 10 Then you can avoid it. Further, when a chain or a gear is used, there is a concern about an increase in cost. However, in the vehicle seat 10, a driving force is applied from the front side to the rear side of the seat cushion 12 by the spindle 282 that is a simple bar. Since it is transmitted, the driving force transmission mechanism can be reduced in cost. Further, when the conduction belt described in the background art section is employed, there is a concern about the occurrence of problems due to the degradation of the conduction belt. However, in the vehicle seat 10, the above-described degradation is caused by employing the spindle 282. This problem can also be avoided.

  Furthermore, in this vehicle seat 10, the rotational force of the recliner drive gear 96 is transmitted to the spindle 282 via the screw gear 272 and the screw gear 274, so the rotational force of the recliner drive gear 96 (along the seat width direction). The rotational force around the axis) can be converted into the rotational force of the spindle 282 (rotational force around the axis along the longitudinal direction of the seat) with a simple configuration. Thereby, the transmission structure of the rotational force from the recliner drive gear 96 to the spindle 282 can be simplified.

  In the vehicle seat 10, the rotational force of the spindle 282 is transmitted to the connecting shaft 258 of the recliner mechanism 46 via the screw gear 298 and the screw gear 300, so that the rotational force of the spindle 282 (in the longitudinal direction of the seat) The rotational force around the axis) can be converted into the rotational force of the connecting shaft 258 (rotational force around the axis along the sheet width direction) with a simple configuration. Thereby, the transmission structure of the rotational force from the spindle 282 to the recliner mechanism 46 can be simplified.

  In the above-described embodiment, the spindle 282 is disposed on the outer side in the seat width direction with respect to the side frame 22. However, the inventions according to claims 1 and 5 are not limited thereto, and the spindle 282 is disposed on the side frame. 22 may be arranged on the inner side in the sheet width direction.

  In the above embodiment, the spindle 282 is arranged on the side frame 22 side (right side) in the seat cushion 12. However, the invention according to claims 1 to 5 is not limited to this, and the spindle 282 is not limited to this. You may make it the structure arrange | positioned at the side frame 20 side (left side) in the seat cushion 12. FIG.

  Further, the vehicle seat 10 according to the above embodiment is configured to include the slide mechanism 36, the front tilt mechanism 38, the lifter mechanism 40, the lumbar mechanism 42, and the recliner mechanism 46. The present invention is not limited to this, and any vehicle seat provided with the recliner mechanism 46 can be applied.

  In addition, the present invention can be implemented with various modifications without departing from the scope of the invention. Needless to say, the scope of rights of the present invention is not limited to the above embodiments.

10 Vehicle Seat 12 Seat Cushion (Seat Body)
14 Seat cushion frame 16 Seat back (seat body)
20, 22 Side frame 46 Recliner mechanism 60 Motor 50 Slide driving force transmission mechanism 52 Front tilt driving force transmission mechanism 54 Lifter driving force transmission mechanism 56 Lumber driving force transmission mechanism 58 Recliner driving force transmission mechanism (bar material rotation) mechanism)
254 Outer side recliner unit 256 Inner side recliner unit 258 Connection shaft 282 Spindle (bar)
298 Screw gear (first gear)
300 Screw gear (second gear)

Claims (5)

A seat body having a plurality of driven mechanisms including a recliner mechanism disposed between the seat cushion and the seat back;
A motor disposed on the front side in the seat cushion;
A plurality of driving force transmission mechanisms for individually transmitting the driving force of the motor to the plurality of driven mechanisms;
With
One of the plurality of driving force transmission mechanisms has a bar that is disposed only at one end side in the seat width direction in the seat cushion and is rotatable about an axis along the seat front-rear direction, A vehicle seat configured as a bar rotation mechanism that transmits a driving force of a motor to the recliner mechanism via the bar.   The vehicle seat according to claim 1, wherein the bar is disposed on an outer side in a seat width direction with respect to a side frame of a seat cushion frame.   The vehicle seat according to claim 1, wherein the bar is supported by a side frame of a seat cushion frame.   The recliner mechanism includes a pair of left and right recliner units, and a connecting shaft that connects the pair of recliner units and rotates them around an axis along the seat width direction to link them together. The material rotation mechanism is attached to the rear end side of the bar material and is meshed with the first gear and the first gear that rotates integrally with the bar material, and extends along the sheet width direction when the first gear rotates. The vehicle seat according to any one of claims 1 to 3, wherein a rotational force of the bar is transmitted to the connecting shaft through a second gear rotated around an axis. A seat body having a recliner mechanism disposed between the seat cushion and the seat back;
A motor disposed on the front side in the seat cushion;
The recliner mechanism has a bar that is disposed only on one end side in the seat width direction in the seat cushion and is rotatable about an axis along the front-rear direction of the seat, and the driving force of the motor is transmitted through the bar A rod rotation mechanism that transmits to
Vehicle seat equipped with

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