JP2019085013A - Reclining lock release device of vehicle seat - Google Patents

Abstract

To obtain, for example, a reclining lock release device of a vehicle seat having a control lever which is not easily affected by acceleration.SOLUTION: In a reclining lock release device 30, for example, a control lever has: a base 32a which is provided so as to be rotatable around a rotation center Ax; a first operation arm 32b extending forward from the base 32a below the rotation center Ax; a second operation arm 32c extending rearward from the base 32a below the rotation center Ax; and a weight arm 32d protruding upward from the base 32a and at least partially located above the rotation center Ax.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a vehicle seat reclining lock release device.

  Conventionally, as an operating lever for releasing a lock for reclining a vehicle seat, an operating lever having two operating arms extending in the front-rear direction below the rotation center is known (for example, Patent Document 1). .

JP 2008-80994 A

  In the above-mentioned prior art, since the two operation arms are both below the center of rotation, the center of gravity of the operation lever is located below the center of rotation. In this case, since the operating lever is easily pivoted by the acceleration (inertial force), for example, a measure is taken to increase the rotational frictional resistance. However, when the rotational frictional resistance increases, the resistance increases when operating the operating lever, so the required operating torque increases and the operability decreases.

  Therefore, one of the problems of the present invention is, for example, to obtain a vehicle seat reclining lock release device having an operation lever that is not easily affected by acceleration.

  The vehicle seat reclining lock release device according to the present invention includes, for example, a seat cushion, a reclining lock mechanism fixed to the seat cushion and switching between a reclining lock state and an unlocked state of the seat back, and the seat cushion pivoted to the seat cushion. And a control lever rotatably supported about the center to unlock the reclining lock mechanism, the control lever having a base rotatably provided about the rotation center, and the rotation center A first operating arm extending forward from the base at a lower position than the base, a second operating arm extending rearward from the base at a position lower than the rotation center, and at least a portion protruding upward from the base And a weight located above the movement center.

  In the above-described reclining lock release device for a vehicle seat, for example, the weight includes an arc portion extending along a circumferential direction around the rotation center.

  In the reclining lock release device of the vehicle seat, for example, it projects from the seat cushion in the axial direction of the rotation center, penetrates the gap between the weight and the base, and the first operating arm of the operating lever And a projecting wall having a stopper for limiting the rotation of the second operating arm in the operating direction.

  The above-mentioned vehicle seat reclining lock release device includes, for example, a return spring that biases the operation lever in the direction opposite to the operation direction, and the projecting wall has a hooking portion that hooks one end of the return spring.

  In the above-described vehicle seat reclining lock release device, the operation lever projects upward from the base and the first operation arm and the second operation arm located below the rotation center, and at least a portion of the operation lever is above the rotation center And a positioned weight. Therefore, according to the above configuration, for example, since the center of gravity of the operation lever is closer to the rotation center by the weight, an operation lever that is less affected by the acceleration can be obtained.

FIG. 1 is a schematic and exemplary side view showing the operation of the vehicle seat in the slide mode of the embodiment. FIG. 2 is a schematic and exemplary side view showing the operation of the vehicle seat in the reclining mode of the embodiment. FIG. 3 is a schematic and exemplary side view showing the operation of the vehicle seat in the walk-in mode of the embodiment. FIG. 4 is a schematic and exemplary perspective view showing a schematic structure of a seat moving device included in the vehicle seat of the embodiment. FIG. 5 is a schematic and exemplary perspective view showing a schematic structure of a seat moving device included in a vehicle seat according to the embodiment, as viewed from a direction different from that in FIG. 4. FIG. 6 is a schematic and exemplary front view of the reclining lock mechanism and the reclining lock release device included in the vehicle seat of the embodiment as viewed from the right in the vehicle width direction. FIG. 7 is a schematic and exemplary exploded perspective view of the reclining lock mechanism and the reclining lock release device included in the vehicle seat of the embodiment. FIG. 8 is a schematic and exemplary front view seen from the same direction as FIG. 6 of a portion of the reclining lock release device included in the vehicle seat of the embodiment, in which the release lever is in the initial position FIG. FIG. 9 is a schematic and exemplary front view seen from the same direction as FIG. 6 of a portion of the reclining lock release device included in the vehicle seat of the embodiment, in which the release lever is in the restricted position. FIG. FIG. 10 is a schematic and exemplary front view of the reclining lock mechanism and the link mechanism included in the vehicle seat of the embodiment as viewed from the left in the vehicle width direction. FIG. 11 is a schematic and exemplary exploded perspective view of the reclining lock mechanism and the link mechanism included in the vehicle seat of the embodiment. FIG. 12 is a schematic and exemplary front view of the link member included in the vehicle seat of the embodiment as viewed from the axial direction. FIG. 13 is a schematic and exemplary perspective view of a link member included in the vehicle seat of the embodiment. FIG. 14 is a schematic and exemplary plan view of a part of the link member and the support included in the vehicle seat of the embodiment. FIG. 15 is a schematic and exemplary front view seen from the same direction as FIG. 10 of a portion of the link mechanism included in the vehicle seat of the embodiment, showing a state where the link member is located at the initial position FIG. FIG. 16 is a schematic and exemplary front view seen from the same direction as FIG. 10 of a portion of the link mechanism included in the vehicle seat of the embodiment, showing a state in which the link member is located at the restricted position. FIG. FIG. 17 is a schematic and exemplary side view of the slide lock mechanism included in the vehicle seat of the embodiment, showing a slide lock state. FIG. 18 is a schematic and exemplary side view of the slide lock mechanism included in the vehicle seat of the embodiment, showing a slide unlocking state. FIG. 19 is a schematic and exemplary perspective view of the lower rail, the upper rail, and the slide lock release device included in the vehicle seat of the embodiment. FIG. 20 is a schematic and exemplary plan view of the lower rail, the upper rail, and the slide lock release device included in the vehicle seat of the embodiment. FIG. 21 is a schematic and exemplary front view of the lower rail, the upper rail, and the slide lock release device included in the vehicle seat of the embodiment. FIG. 22 is a schematic and exemplary side view of a portion of the slide lock release device included in the vehicle seat of the embodiment, showing the operating member in the initial position. FIG. 23 is a schematic and exemplary side view of a portion of the slide lock release device included in the vehicle seat of the embodiment, showing the actuating member in the maximum rotation position.

  In the following, exemplary embodiments of the present invention are disclosed. The configurations of the embodiments shown below, and the operations and results (effects) provided by the configurations are examples. The present invention can also be realized with configurations other than the configurations disclosed in the following embodiments. Further, according to the present invention, it is possible to obtain at least one of various effects (including derivative effects) obtained by the configuration. In the present specification, ordinal numbers are given for the sake of convenience in order to distinguish parts, parts, positions, directions and the like, and do not indicate priority or order.

  Moreover, in each figure, the arrow which shows a direction is shown for convenience. The arrow X indicates the front in the vehicle longitudinal direction, the arrow Y indicates the right in the vehicle width direction, and the arrow Z indicates the upper side in the vehicle vertical direction. The right side is the right side when the forward direction of the vehicle is viewed.

[Sheet configuration and operation]
1 to 3 are side views of a seat 10 provided in a vehicle, and FIG. 1 is a view showing an operation of the seat 10 in a slide mode, and FIG. 2 is a view showing an operation of the seat 10 in a reclining mode. FIG. 3 is a view showing the operation of the seat 10 in the walk-in mode.

  As shown in FIG. 1, the seat 10 for a vehicle is configured to be slidable between the front position Psf and the rear position Psb, and among the plurality of positions between the front position Psf and the rear position Psb It is comprised so that fixation is possible in either. In the present embodiment, the seat 10 is movably supported along the lower rails 13 (rails) extending along the longitudinal direction of the vehicle. The slide lock mechanism (not shown in FIGS. 1 to 3) is switched between a locked state in which the seat 10 can not slide and an unlocked state in which the seat 10 can be slid. Hereinafter, the locked state of the slide lock mechanism is referred to as a slide locked state, and the unlocked state of the slide lock mechanism is referred to as a slide unlocked state.

  The seat 10 has a seat cushion 11 and a seat back 12. As shown in FIG. 2, the seat back 12 is configured to be movable between the forward inclined position Pif and the backward inclined position Pib, and also includes a plurality of positions between the forward inclined position Pif and the backward inclination position Pib. It is comprised so that fixation is possible in either of. The forward inclined position Pif may also be referred to as a folding position, and the backward inclined position Pib may also be referred to as a deployed position. In the present embodiment, the seat back 12 is provided rotatably around a rotation center Ax that is located below the seat back 12 and extends along the vehicle width direction, and the inclination angle of the seat back 12 is variable. It can be set. The reclining lock mechanism (not shown in FIGS. 1 to 3) is a locked state in which the seat back 12 can not be moved relative to the seat cushion 11, and an unlocked state in which the seat back 12 is movable relative to the seat cushion 11. Switch between and. In the following, the lock state of the reclining lock mechanism is referred to as a reclining lock state, and the unlocked state of the reclining lock mechanism is referred to as a reclining unlock state.

  In this embodiment, the seat 10 can operate in the following three modes for sliding and reclining the seat 10:

[Slide mode: Fig. 1]
In the slide mode, the seat 10 slides along the lower rail 13. For example, in response to an operation by a passenger of a slide release lever (not shown) provided below and in front of the seat cushion 11, the slide lock mechanism switches from the slide lock state to the slide unlock state. The slide lock mechanism switches from the slide unlock state to the slide lock state in response to the release of the operation of the slide release lever by the occupant.

[Reclining mode: Fig. 2]
In the reclining mode, the seat back 12 pivots about the pivot center Ax. For example, in response to a predetermined operation (for example, a pulling operation by a hand) by a passenger of a first operation arm (not shown in FIGS. 1 to 3) provided on the side of the seat cushion 11, the reclining lock mechanism Switch from reclining to unlocking state. Further, in response to the release of the predetermined operation of the first operation arm by the occupant, the reclining lock mechanism switches from the reclining unlocked state to the reclining locked state.

[Walk-in mode: Fig. 3]
In the walk-in mode, the seat 10 slides toward the front of the vehicle with the seat back 12 inclined forward at a predetermined angle. The reclining lock mechanism switches from the reclining lock state to the reclining unlock state according to a predetermined operation (for example, a pressing operation by a foot or hand) by the occupant of the second operation arm (not shown in FIG. 3). The mechanism switches from the slide lock state to the slide unlock state. In the slide unlocking state, the seat 10 can be moved in the longitudinal direction of the vehicle by the biasing force of the biasing member (not shown) or the input external force. For example, forward movement of the seat 10 in a forwardly inclined state can secure a wider route for getting on and off the vehicle.

[Seat movable device]
FIG. 4 is a perspective view showing a schematic structure of the sheet movable apparatus 100 for realizing the above three modes, and FIG. 5 is a perspective view of the sheet movable apparatus 100 seen from a direction different from FIG.

  As shown in FIGS. 4 and 5, the two lower rails 13 extend in the longitudinal direction of the vehicle and are parallel to each other. The lower rail 13 supports the upper rail 14 slidably in the longitudinal direction of the vehicle. The upper rail 14 supports a cushion base 15 which is a frame member of the seat cushion 11. Further, the seat back 12 is supported by the cushion base 15 so as to be rotatable around a rotation center Ax. Therefore, as the upper rail 14 moves in the vehicle longitudinal direction along the lower rail 13, the seat cushion 11 and the seat back 12, that is, the seat 10 move in the vehicle longitudinal direction. The lower rail 13 may be simply referred to as a rail, and the upper rail 14 may also be referred to as a slider.

  The upper rails 14 are each provided with a slide lock release device 60. The slide lock releasing device 60 releases the lock of the upper rail 14 to the lower rail 13 from the slide lock state in which the upper rail 14 is locked to the lower rail 13 in the status of the slide lock mechanism 40 that locks the upper rail 14 and hence the seat 10 to the lower rail 13 Switch to slide unlock state. The slide lock mechanism 40 and the slide lock release device 60 will be described later.

  Supports 16L and 16R are fixed to the two left and right cushion bases 15L and 15R, respectively. As shown in FIG. 4, the support 16R fixed to the right cushion base 15R is provided with a reclining lock mechanism 20R (20) and a reclining lock releasing device 30. Further, as shown in FIG. 5, a reclining lock mechanism 20L (20) and a link mechanism 50 are provided on the support 16L fixed to the left cushion base 15L. The cushion bases 15L, 15R and the supports 16L, 16R are components of the seat cushion 11. That is, the cushion bases 15L, 15R and the supports 16L, 16R are an example of the seat cushion 11.

  The reclining lock release device 30 releases the lock by the reclining lock mechanisms 20L and 20R (20) based on the operation of the release lever 32. Also, the link mechanism 50 pulls a cable (not shown in FIGS. 4 and 5) for operating the slide lock release device 60 based on the forward inclination of the seat back 12.

[Reclining lock mechanism and reclining lock release device]
6 is a front view of the reclining lock mechanism 20R and the reclining lock releasing device 30 as viewed from the right in the vehicle width direction, and FIG. 7 is an exploded perspective view of the reclining locking mechanism 20R and the reclining lock releasing device 30.

  As shown in FIGS. 6 and 7, both the reclining lock mechanism 20R (20) and the reclining lock release device 30 are attached to the support 16R.

  The support 16R has a wall 16a. The wall 16a intersects the vehicle width direction, and extends along the vehicle longitudinal direction and the vehicle vertical direction. The wall 16a is provided with a through hole 16b. An uneven shape for positioning the reclining lock mechanism 20R is provided at an edge of the through hole 16b.

  The reclining lock mechanism 20R (20) is fixed to the support 16R in a state in contact with the inward in the vehicle width direction of the support 16R. The reclining lock mechanism 20R has a base portion 21, a pivoting portion 22, a coupling portion (not shown), an operation portion 23, and an operating mechanism (not shown). The base portion 21 is fixed to the support 16R and thus to the seat cushion 11. The pivoting portion 22 is provided so as to be pivotable around a pivot center Ax, and is fixed to the seat back 12. The coupling portion moves between a coupling position where the pivoting portion 22 is coupled to the base portion 21 and a blocking position where the pivoting portion 22 is blocked from the base portion 21. The operation unit 23 is provided rotatably around the rotation center Ax. The operating mechanism includes, for example, a cam mechanism, an urging member, etc. (not shown), and when the operation unit 23 is rotated in the direction R11 around the rotation center Ax, the coupling unit is moved to the blocking position When the operation unit 23 is rotated in the direction R12, the coupling unit is moved to the coupling position. A state in which the pivoting portion 22 is coupled to the base portion 21 by the coupling portion is a reclining lock state of the reclining lock mechanism 20, and a state in which the pivoting portion 22 is not coupled to the base portion 21 by the coupling portion. A state in which the moving portion 22 can rotate around the rotation center Ax is a reclining unlocking state of the reclining lock mechanism 20. The direction R11 is referred to as a release direction, and is an example of the operation direction. The direction R12 is referred to as a lock direction, and is an example of a direction opposite to the operation direction.

  The reclining lock release device 30 has a shaft 31, a release lever 32, a return spring 33, and a projecting wall 34 as a configuration supported by the support 16R. The reclining lock release device 30 is positioned to the right in the vehicle width direction than the support 16R except for a part of the shaft 31.

  The shaft 31 penetrates the reclining lock mechanism 20R and pivots integrally with the operation portion 23 of the reclining lock mechanism 20R. The release lever 32 is fixed to the shaft 31. Thus, the release lever 32 is connected to the operation unit 23 via the shaft 31. The shaft 31 and the release lever 32 rotate around the rotation center Ax integrally with the operation unit 23. The return spring 33 biases the shaft 31, the release lever 32, and the operation portion 23 back to the initial position, that is, in the direction R12 around the rotation center Ax. A hooking portion 31a having a notch on which the return spring 33 is hooked is provided at an end portion of the shaft 31 in the vehicle width direction outer side. The return spring 33 is an example of a biasing member.

  The projecting wall 34 is fixed to the support 16R. The projecting wall 34 has a partially cylindrical peripheral wall 34 a extending along the circumferential direction around the rotation center Ax. The outer peripheral surface of the peripheral wall 34a functions as a guide of a spiral spring which biases the seat back 12 (see FIGS. 1 to 3) in the forward inclination direction around the rotation center Ax. The peripheral wall 34a is provided with a hooking portion 34b having a notch on which the spiral spring is hooked. Further, the projecting wall 34 is provided with a hooking portion 34c having a notch on which one end of the return spring 33 is hooked.

  The shape of the release lever 32 is plate-like, and the release lever 32 extends in a direction intersecting the vehicle width direction. The release lever 32 has a base 32a, a first operation arm 32b, a second operation arm 32c, and a weight arm 32d. The release lever 32 is an example of the control lever.

  The base 32a is provided with a through hole 32e through which the shaft 31 passes. For example, at the edge of the through hole 32e, a positioning shape (for example, a straight portion or an uneven portion) defining an attachment angle around the rotation center Ax with respect to the shaft 31 and interlocking the shaft 31 and the release lever 32 in the direction R11 and the direction R12 (Not shown) can be provided.

  The first operation arm 32b extends forward from the base 32a while bending below the rotation center Ax. The input operation with respect to the first operation arm 32b is a pulling up by the occupant seated on the seat 10 (see FIGS. 1 to 3), and the release lever 32 pivots in the direction R11 by the pulling up operation. The first operating arm 32b may also be referred to as a pulling arm or a reclining arm.

  The second operation arm 32c extends rearward from the base 32a below the rotation center Ax. The input operation to the second operation arm 32c is a depression by the foot of a person who is not seated on the seat 10 provided with the reclining lock release device 30, and the release lever 32 is rotated in the direction R11 by the depression operation. Move. The second operation arm 32c may also be referred to as a push-down arm or a walk-in arm.

  The weight arm 32d protrudes upward from the front and upper end of the base 32a. The weight arm 32 d has an arc portion 32 d 1 extending in an arc shape along the circumferential direction of the rotation center Ax. An arc-shaped notch 32f extending along the circumferential direction of the rotation center Ax is provided between the weight arm 32d (arc portion 32d1) and the base 32a. The peripheral wall 34a of the projecting wall 34 penetrates the notch 32f in the vehicle width direction. In other words, the peripheral wall 34a is accommodated in the notch 32f. The weight arm 32 d is an example of a weight. In addition, the notch 32f is an example of a gap, and may be referred to as an opening.

  8 and 9 are front views of a portion of the reclining lock release device 30 viewed from the same direction as FIG. 6, and FIG. 8 is a view showing the release lever 32 in the initial position P1i. FIG. 9 is a view showing a state where the release lever 32 is positioned at the limit position P1e.

  By pulling up the first operation arm 32b or pushing down the second operation arm 32c, the release lever 32 can be pivoted by a predetermined angle in the direction R11 from the initial position P1i of FIG. By the rotation of the release lever 32 in the direction R11, the shaft 31 and the operation unit 23 (see FIG. 7) rotate in the direction R11.

  The release lever 32 can be pivoted in the direction R11 until it is positioned at the limit position P1e of FIG. In the limit position P1e, the end 32f1 (edge) of the notch 32f in the direction R12 abuts on the end 34d (also see FIG. 7) of the direction R12 of the projecting wall 34. In other words, the end 34d abuts on the end 32f1 to limit the rotation of the release lever 32 in the direction R11. That is, the end 34 d functions as a stopper that limits the range of rotation of the release lever 32 in the direction R11. The end 34 d is an example of a stopper.

  In the reclining lock mechanism 20R, the release lever 32 pivots in the direction R11, and is positioned at the reclining lock release position (not shown) between the initial position P1i (see FIG. 8) and the limit position P1e (see FIG. 9). When it does, it changes from reclining lock state to reclining unlocking state. When the operating force in the direction R11 to the release lever 32 is released, the release lever 32 is pivoted (returned) in the direction R12 by the biasing force of the return spring 33, whereby the reclining lock mechanism 20R is reclined Transition from the locked state to the reclining locked state (return).

  As shown in FIGS. 4 and 5, the shaft 31 is connected to the shaft 35 via a connecting shaft 37. Therefore, the rotation of the release lever 32 is also transmitted to another reclining lock mechanism 20L via the shaft 31, the connection shaft 37, and the shaft 35. That is, the reclining lock mechanism 20L operates in conjunction with the reclining lock mechanism 20R.

  Here, in the release lever 32 (operation lever) of this embodiment, the weight arm 32d (weight) protrudes upward from the base 32a at least at the initial position P1i, and at least a part of the weight arm 32d is greater than the rotation center Ax. It is located above. As described above, the first operation arm 32 b and the second operation arm 32 c are located below the pivot center Ax. For this reason, if the release lever 32 is configured not to have the weight arm 32d, the center of gravity of the release lever 32 will be farther away from the rotation center Ax downward. In such a configuration, when acceleration in the forward or backward direction occurs at the center of gravity of the release lever 32 in a state where the first operating arm 32b and the second operating arm 32c are not operated (initial position P1i), the first operation is performed. Although the operation arm 32b and the second operation arm 32c are not operated, the release lever 32 is easily pivoted by the acceleration (inertial force). In such a case, for example, measures are taken to increase the rotational frictional resistance of the release lever 32. However, in the configuration in which the measure is taken, the resistance increases when a person operates, so the operation torque increases and the operability deteriorates.

  In this respect, in the reclining lock release device 30 of the present embodiment, the release lever 32 is provided with a weight arm 32 d that protrudes upward from the base 32 a. According to the present embodiment, since the center of gravity of the release lever 32 is located further upward, ie, closer to the rotation center Ax, by the weight arm 32d, the release lever 32 does not have the weight arm 32d. In comparison, it becomes difficult to rotate due to acceleration (inertial force). Therefore, according to the present embodiment, it is possible to suppress, for example, unintentional rotation due to the acceleration on which the release lever 32 acts. Further, according to the present embodiment, for example, the release lever 32 is unintentionally pivoted by the acceleration acting during the non-operation while avoiding the disadvantage that the operation force is increased by the relatively simple configuration. Can be suppressed. That is, according to the present embodiment, for example, it becomes possible to simultaneously ensure the operability at the normal time and the suppression of the unintended rotation due to the acceleration by the relatively simple configuration.

  Further, in the present embodiment, the weight arm 32 d includes an arc portion 32 d 1 extending along the circumferential direction of the rotation center Ax. Therefore, according to the present embodiment, it is possible to suppress, for example, the weight arm 32 d and hence the release lever 32 from being enlarged in the radial direction.

  Further, in the present embodiment, the projecting wall 34 is fixed to the support 16R, and axially penetrates the notch 32f (gap) between the base 32a of the release lever 32 and the weight arm 32d. Further, the end 34 d of the projecting wall 34 functions as a stopper that limits the range of rotation of the release lever 32 in the direction R11. Therefore, according to the present embodiment, for example, since the stopper can be provided utilizing the notch 32f, the reclining lock releasing device 30 can be further improved as compared with the configuration in which the stopper is provided at a position different from the notch 32f. It can be made compact or simpler.

  Further, in the present embodiment, the projecting wall 34 has a hook portion 34 c on which the return spring 33 is hooked. Therefore, according to the present embodiment, for example, since the hooking portion 34c can be provided using the projecting wall 34, the reclining lock is provided as compared with the configuration in which the hooking portion is provided at a position different from the projecting wall 34. The release device 30 can be made more compact or simpler.

  Further, in the present embodiment, the protruding wall 34 has a peripheral wall 34 a along the circumferential direction. Therefore, according to the present embodiment, for example, the bending rigidity and the torsional rigidity of the peripheral wall 34a can be further enhanced as compared with the case where the peripheral wall 34a is configured straight. Further, according to the present embodiment, for example, the peripheral wall 34a suppresses interference of a spiral spring (not shown) disposed radially outward of the peripheral wall 34a with a guide, a positioning portion, or another component. It can act as a barrier. Further, according to the present embodiment, for example, the weight arm 32d and the peripheral wall 34a can be arranged more compactly by extending the peripheral wall 34a along the arc portion 32d1 of the weight arm 32d.

  Further, in the present embodiment, the weight arm 32d protrudes upward from the base 32a at a position separated in the vehicle longitudinal direction from the rotation center Ax. Thus, according to the present embodiment, for example, substantially the entire area of the weight arm 32d helps to position the center of gravity of the release lever 32 upward.

[Link mechanism]
FIG. 10 is a front view of the reclining lock mechanism 20L and the link mechanism 50 as viewed from the left in the vehicle width direction, and FIG. 11 is an exploded perspective view of the reclining lock mechanism 20L and the link mechanism 50.

  As shown in FIGS. 10 and 11, the reclining lock mechanism 20L (20) and the link mechanism 50 are both attached to the support 16L.

  The support 16L has a wall 16a. The wall 16a intersects the vehicle width direction, and extends along the vehicle longitudinal direction and the vehicle vertical direction. The wall 16a is provided with a through hole 16b. An uneven shape for positioning the reclining lock mechanism 20L is provided at the edge of the through hole 16b. The wall 16a is an example of a standing wall.

  The reclining lock mechanism 20L (20) is fixed to the support 16L in a state in which the reclining lock mechanism 20L (20) is in contact with the support 16L in the vehicle width direction. Like the reclining lock mechanism 20R, the reclining lock mechanism 20L moves the coupling portion to the blocking position when the operation portion 23 is rotated in the direction R11 around the rotation center Ax, and the operation portion 23 moves in the direction R12. If it is turned, the joint is moved to the joint position. In this case, the structure of the reclining lock mechanism 20L and the structure of the reclining lock mechanism 20R are, for example, mirror images.

  The reclining lock release device 30 has a shaft 35, a return spring 36, and a projecting wall 53 (hook portion 53c) as a configuration supported by the support 16L. The reclining lock release device 30 is located to the left in the vehicle width direction than the support 16L except for a part of the shaft 35.

  The shaft 35 penetrates the reclining lock mechanism 20L and pivots integrally with the operation portion 23 of the reclining lock mechanism 20L. The shaft 35 rotates around the rotation center Ax integrally with the operation unit 23. The return spring 36 biases the shaft 35 and the operation unit 23 back to the initial position, that is, in the direction R12 around the rotation center Ax. A hooking portion 35a having a notch on which the return spring 36 is hooked is provided at an outer end portion of the shaft 35 in the vehicle width direction. The return spring 36 is an example of a biasing member.

  Here, as shown in FIGS. 4 and 5, the shaft 35 is connected to the shaft 31 via a connecting shaft 37. Therefore, the shaft 35 and the operation unit 23 rotate in the direction R11 around the rotation center Ax via the connection shaft 37 by the operation of the release lever 32, and bias the return spring 36 (and the shaft 31). By the biasing force of the return spring 33), it rotates in the direction R12 around the rotation center Ax. That is, since the shafts 31 and 35 are connected by the connecting shaft 37, the reclining lock mechanism 20L operates in conjunction with the reclining lock mechanism 20R.

  The link mechanism 50 includes a link member 51, a return spring 52, a projecting wall 53, and a bracket 54. The link mechanism 50 is located on the left side in the vehicle width direction than the support 16L.

  The link member 51 is rotatably supported by a shaft 35 about a rotation center Ax. The link member 51 is pushed forward by the pressing member 12a (see FIG. 10) fixed to the seatback 12 when the seatback 12 (see FIGS. 1 to 3) is tilted forward by a predetermined angle or more. , Rotate. Here, the forward inclination direction of the seat back 12 around the rotation center Ax is the direction R12. Thus, the link member 51 is pushed by the pressing member 12a and pivots in the direction R12.

  When the occupant is not seated on the seat 10, the forward inclination of the seatback 12 by a predetermined angle or more is accompanied by the depression operation of the second operation arm 32c (walk-in arm) of the release lever 32 by the person's foot or hand. The reclining lock mechanism 20 is in the reclining and unlocking state, and the seat back 12 is biased in the forward tilting direction by the spiral spring. That is, the link member 51 pivots in the walk-in mode described above. The link member 51 pulls the inner wire 71 of the cable 70 connected to the slide lock release device 60 along with the forward inclination of the seat back 12. The slide lock release device 60 transitions from the slide lock state to the slide unlock state by pulling of the inner wire 71 by the link member 51. That is, the link mechanism 50 is a mechanism that permits the movement of the seat 10 in the front-rear direction based on the forward inclination of the seat 10 in the walk-in mode described above.

  The projecting wall 53 is fixed to the support 16L. The projecting wall 53 has a partially cylindrical peripheral wall 53a extending along the circumferential direction around the rotation center Ax. The outer peripheral surface of the peripheral wall 53a functions as a guide of a spiral spring that biases the seat back 12 in the forward tilting direction around the rotation center Ax. The peripheral wall 53a is provided with a hooking portion 53b having a notch on which the spiral spring is hooked. The projecting wall 53 is provided with a hook 53 c having a notch on which the return spring 36 is hooked. Further, the peripheral wall 53a is provided with a hooking portion 53d having a notch on which the return spring 52 is hooked.

  The bracket 54 is fixed to the support 16L and protrudes rearward from the support 16L. The bracket 54 is provided with a hooking portion 54a having a notch on which the outer tube 72 of the cable 70 is hooked. The bracket 54 may be provided integrally with the projecting wall 53.

  12 is a front view of the link member 51 as viewed from the axial direction, FIG. 13 is a perspective view of the link member 51, and FIG. 14 is a plan view of part of the link member 51 and the support 16L. As shown in FIGS. 10 and 11, the link member 51 extends in a direction intersecting the vehicle width direction. Further, as shown in FIGS. 12 and 13, the shape of the link member 51 is plate-like. The link member 51 has a base 51a, an output arm 51b, and an input arm 51c.

  The base 51a is provided with a through hole 51d through which the shaft 35 passes. The link member 51 and the shaft 35 do not interlock and rotate independently.

  The output arm 51b has a first extending portion 51b1 and a first projecting portion 51b2. The first extending portion 51 b 1 and the first projecting portion 51 b 2 both extend (extend) in a direction intersecting with the vehicle width direction. The first extending portion 51b1 extends rearward from the lower portion of the base 51a. That is, the first extending portion 51b1 extends in the direction away from the rotation center Ax. The output arm 51b is positioned at the front end (rear end) of the first extending portion 51b1 and curves upward approximately 90 ° at a bending portion 51b3 separated from the rotation center Ax, and the first projecting portion 51b2 extends upward ing. The upper part of the bent portion 51b3 is substantially along the direction R12. That is, the output arm 51b bends in the direction R12 in the bending portion 51b3, and the first projecting portion 51b2 protrudes in the direction R12 from a position away from the rotation center Ax of the first extending portion 51b1. The extending direction of the first extending portion 51b1 may be a direction away from the rotation center Ax, and is not limited to the rear. Further, the direction in which the first protrusion 51b2 protrudes may be substantially along the direction R12, and is not limited to the upper side.

  Due to such a bent shape of the output arm 51b, a substantially U-shaped notch 51e1 is provided between the base 51a and the output arm 51b.

  The first protrusion 51b2 is provided with a through hole 51b4 penetrating in the axial direction. The through hole 51b4 may also be referred to as an opening. As shown in FIG. 11, a hook 71a provided at the tip of the inner wire 71 of the cable 70 is hooked on the edge 51b5 (in the present embodiment, the lower edge) of the through hole 51b4. The edge 51b5 is an example of a hook. The hook 71a is an example of an end. The hook 71a and the inner wire 71 hooked to the edge 51b5 extend in the direction R11.

  As described above, in the present embodiment, the through hole 51b4 is provided in the first projecting portion 51b2 that protrudes in the direction R12 from the bending portion 51b3. Therefore, as is apparent from FIG. 10, the bent portion 51b3 and a part of the first protrusion 51b2 (the region indicated by the broken line G in FIG. 10) are positioned adjacent to the through hole 51b4 and the direction R11 The hooks 71a caught in the edge 51b5 of the holes 51b4 overlap in the axial direction and can function as a guide for the hooks 71a. That is, a part of the bending portion 51b3 and the first protrusion 51b2 is an example of the guide portion. Further, in the present embodiment, a flat surface 51b6 facing the hook 71a is provided from the first projecting portion 51b2 to the bending portion 51b3. The flat surface 51b6 intersects with the axial direction and extends. With such a configuration, the hook 71a can move along the plane 51b6 as the link member 51 moves. The flat surface 51b6 may be referred to as a guide surface or a sliding surface.

  As shown in FIGS. 13 and 14, a step 51b7 is provided between the first extending portion 51b1 and the bending portion 51b3 and the first projecting portion 51b2 of the output arm 51b. Due to such a step shape of the output arm 51b, the bending portion 51b3 and the first projecting portion 51b2 are positioned farther from the wall 16a of the support 16L than the first extending portion 51b1. In other words, the gap between the bent portion 51b3 and the first protrusion 51b2 and the wall 16a is larger than the gap between the first extending portion 51b1 and the wall 16a.

  As shown in FIGS. 12 to 14, the output arm 51 b is provided with a reinforcing portion 51 f 1 extending from the first extending portion 51 b 1 to the bending portion 51 b 3. The reinforcing portion 51f1 is, for example, a portion protruding axially in a substantially central portion in the width direction of the output arm 51b and extending along the longitudinal direction of the output arm 51b. However, the reinforcing portion 51f1 may be configured such that the end edge in the width direction of the output arm 51b is bent in the axial direction. The reinforcing portion 51 f 1 is provided across the step 51 b 7. In addition, except for the step 51b7 and the reinforcing portion 51f1, the first extending portion 51b1, the bending portion 51b3, and the first projecting portion 51b2 all intersect (orthogonal) the axial direction. The reinforcing portion 51 f 1 is an example of a first reinforcing portion.

  Further, as shown in FIGS. 13 and 14, the edge 51b5 of the through hole 51b4 in the first protrusion 51b2 is recessed from the plane 51b6 over its entire circumference and protrudes in the direction approaching the wall 16a of the support 16L. ing. If the edge 51b5 of the through hole 51b4 protrudes from the flat surface 51b6, the hook 71a is unlikely to be along the flat surface 51b6. In this respect, in the present embodiment, since the edge 51b5 of the through hole 51b4 is recessed in the flat surface 51b6, the hook 71a can be more stably in contact with the flat surface 51b6. In addition, the fact that the edge 51b5 protrudes on the opposite side of the flat surface 51b6 has an advantage that the rattling of the hook 71a is reduced.

  As shown in FIGS. 12 and 13, the input arm 51c has a second extending portion 51c1 and a second projecting portion 51c2. Each of the second extending portion 51c1 and the second projecting portion 51c2 extends (extends) intersecting with the vehicle width direction. The second extending portion 51c1 extends forward from the lower portion of the base 51a. That is, the second extending portion 51c1 extends toward the opposite side of the first extending portion 51b1 of the output arm 51b. The first extending portion 51b1 and the second extending portion 51c1 are aligned on a substantially straight line. The input arm 51c is bent at approximately 90 ° upward at a bending portion 51c3 located at the tip (front end) of the second extending portion 51c1 and separated from the rotation center Ax, and the second projecting portion 51c2 extends upward There is. The upper part of the bent portion 51c3 is substantially along the direction R11. That is, the input arm 51c is bent in the bending portion 51c3 in the direction R11, and the second protrusion 51c2 protrudes in the direction R11 from a position separated from the rotation center Ax of the second extending portion 51c1. The extending direction of the second extending portion 51c1 may be a direction away from the rotation center Ax and may be a direction different from the extending direction of the first extending portion 51b1, and the opposite direction of the extending direction of the first extending portion 51b1. And not limited to the front. The direction in which the second protrusion 51 c 2 protrudes may be substantially along the direction R 11 and is not limited to the upper side.

  Due to such a bent shape of the input arm 51c, a substantially U-shaped notch 51e2 is provided between the base 51a and the input arm 51c.

  The second protrusion 51 c 2 is provided with a radially extending end 51 c 4. The end 51c4 is pressed by the pressing member 12a (see FIG. 10). In other words, the second projecting portion 51c2 abuts on the seatback 12 that is inclined forward. The end 51 c 4 may be referred to as a pressed portion or an input portion.

  The input arm 51c is provided with a reinforcing portion 51f2 extending from the second extending portion 51c1 through the bending portion 51c3 to the second projecting portion 51c2. The reinforcing portion 51f2 is, for example, a portion protruding axially in a substantially central portion in the width direction of the input arm 51c and extending along the longitudinal direction of the input arm 51c. However, the reinforcing portion 51 f 2 may have a configuration in which the end edge in the width direction of the input arm 51 c is bent in the axial direction. The second extending portion 51c1, the bending portion 51c3, and the second projecting portion 51c2 all intersect (orthogonal) with the axial direction. Reinforcement part 51f2 is an example of the 2nd reinforcement part.

  Further, the link member 51 is provided with a hooking portion 51g having a notch on which the return spring 52 is hooked.

  15 and 16 are front views of part of the link mechanism 50 as viewed from the same direction as FIG. 10, and FIG. 15 is a view showing the state where the link member 51 is positioned at the initial position P2i. 16 is a view showing a state in which the link member 51 is positioned at the limit position P2e.

  By pressing the end 51c4 from the pressing member 12a (see FIGS. 10 and 16) along with the forward inclination of the seat back 12, the link member 51 can rotate from the initial position P2i to the direction R12 by a predetermined angle. . By rotation of the link member 51 in the direction R12, the inner wire 71 hooked on the edge 51b5 of the through hole 51b4 is pulled upward.

  The link member 51 can rotate in the direction R12 until it is positioned at the limit position P2e in FIG. In the limit position P2e, the pressing member 12a is in contact with the upper and front end 16c (see FIGS. 10 and 16) of the support 16L. The link member 51 is biased in the direction R11 by being pulled by the inner wire 71. Therefore, the end 16c functions as an indirect stopper that limits the rotation range of the link member 51 in the direction R12 by abutting on the pressing member 12a. The link member 51 is biased by the return spring 52 in the direction R12. As a result, the slack of the inner wire 71 is eliminated, and the hook 71a is kept in a state of being caught by the end of the direction R11 of the edge 51b5 of the through hole 51b4.

  The slide lock release device 60 (see FIGS. 4 and 5) causes the slide lock mechanism 40 to transition from the slide lock state to the slide unlock state in response to the pulling of the inner wire 71 by the link member 51. When the link member 51 is positioned at the slide lock release position (not shown) between the initial position P2i (see FIG. 15) and the limit position P2e (see FIG. 16), the slide lock mechanism 40 starts from the slide lock state. Transition to slide unlock state.

  The input from the outside to the seat back 12 causes the seat back 12 to tilt backward against the biasing force of the spiral spring (not shown), so that the contact with the end 16 c of the pressing member 12 a is cancelled, and the pressing member 12 a When the link member 51 is separated from the end 16c, the link member 51 is pulled by the inner wire 71 to rotate in the direction R11 and return to the initial position P2i (see FIG. 15). At this time, the slide lock mechanism 40 makes a transition (return) from the slide unlock state to the slide lock state.

  Further, as shown in FIG. 15, the end 53e in the direction R12 of the peripheral wall 53a of the projecting wall 53 faces the input arm 51c of the link member 51 located at the initial position P2i with a gap. Therefore, when the link member 51 is rotated in the direction R11 beyond the initial position P2i due to any cause, the end 53e abuts on the input arm 51c, and in the direction R11 beyond the abutted position. Can function as a preliminary stopper that limits the rotation of the wheel. Further, the end 53 e faces a portion of the input arm 51 c provided with the reinforcing portion 51 f 2, and abuts on the portion provided with the reinforced portion 51 f 2. Therefore, it can suppress that the input arm 51c deform | transforms by contact | abutting with the edge part 53e. The end 53 e is an example of a stopper.

  Further, as shown in FIG. 16, the end 53f in the direction R11 of the hooking portion 53c of the projecting wall 53 faces the output arm 51b of the link member 51 located at the limiting position P2e with a gap. Therefore, when the link member 51 is rotated in the direction R12 beyond the limit position P2e due to some cause, the end 53f abuts on the output arm 51b, and in the direction R12 beyond the abutted position. Can function as a preliminary stopper that limits the rotation of the wheel. The end 53 f faces a portion of the output arm 51 b where the reinforcing portion 51 f 1 is provided, and abuts against the portion where the reinforcing portion 51 f 1 is provided. Therefore, it can suppress that the output arm 51b deform | transforms by contact | abutting with the edge part 53f. The end 53 f is an example of a stopper.

  As described above, in the present embodiment, the first extending portion 51b1 of the output arm 51b extends in the direction away from the rotation center Ax, and the bending portion 51b3 extends in the direction R12 from the first extending portion 51b1 (first time In the moving direction), the first protrusion 51b2 protrudes from the bent portion 51b3 in the direction R12, and the inner wire 71 (cable 70) at the edge 51b5 (hook portion) of the through hole 51b4 provided in the first protrusion 51b2. Of the bent portion 51b3 and a portion of the first protrusion 51b2 that is adjacent to the edge 51b5 in the direction R11 (the second rotation direction) functions as a guide for the cable 70. . Therefore, according to the present embodiment, for example, the cable 70 can be more stably supported by the link member 51. The guide portion may be provided on at least one of the bending portion 51b3 and the first projecting portion 51b2.

  Further, in the present embodiment, the bent portion 51b3 of the output arm 51b is connected to the first extending portion 51b1 via the step 51b7, and is axially separated from the wall 16a (the standing wall) than the first extending portion 51b1. , Extends transverse to the axial direction. Therefore, according to the present embodiment, for example, it is easy to secure a gap for housing the hook 71a between the bending portion 51b3 and the wall 16a, and it is possible to suppress the hook 71a from interfering with the wall 16a.

  Further, in the present embodiment, the reinforcing portion 51f1 (first reinforcing portion) extends from the first extending portion 51b1 to the first extending portion 51b1 and extends to at least the bending portion 51b3 across the step 51b7. Therefore, according to the present embodiment, for example, the output arm 51b can be prevented from being easily deformed at the step 51b7.

  Further, in the present embodiment, the reinforcing portion 51 f 2 (second reinforcing portion) extends from the second extending portion 51 c 1 to the second projecting portion 51 c 2. Therefore, according to the present embodiment, for example, it is possible to suppress the input arm 51c from being easily deformed between the second extending portion 51c1 and the second projecting portion 51c2.

  Further, in the present embodiment, the end portions 53 e and 53 f of the protruding wall 53 function as stoppers that limit the rotation range of the link member 51. Therefore, according to the present embodiment, the link mechanism 50 can be configured more compactly or more simply, for example, as compared with the configuration in which the stopper is provided on a member other than the projecting wall 53.

  Further, in the present embodiment, the projecting wall 53 has hooking portions 53b, 53c, 53d for hooking the spiral spring (not shown) and the return springs 36, 52. Therefore, according to the present embodiment, for example, since the hooking portions 53b, 53c, 53d can be provided using the projecting wall 53, compared with the configuration in which the hooking portion is provided to a member different from the projecting wall 53. Thus, the link mechanism 50 can be made more compact or simpler.

  Further, in the present embodiment, the protruding wall 53 has a peripheral wall 53a along the circumferential direction. Therefore, according to the present embodiment, for example, the bending rigidity and the torsional rigidity of the peripheral wall 53a can be further enhanced as compared with the case where the peripheral wall 53a is configured straight. Further, according to the present embodiment, for example, the peripheral wall 53a suppresses interference of a spiral spring (not shown) disposed radially outward of the peripheral wall 53a with a guide, a positioning portion, or another component. It can act as a barrier.

[Slide lock mechanism and slide lock release device]
As shown in FIGS. 4 and 5, on the floor, two lower rails 13 spaced apart from each other in the vehicle width direction and extending along the longitudinal direction of the vehicle are disposed parallel to each other, and the upper rails 14 can slide on each lower rail 13 Is attached to The upper rail 14 also extends a predetermined length along the longitudinal direction of the vehicle. The seat cushion 11 (seat 10) is fixed to the two upper rails 14 in a state of straddling the two upper rails 14 from above. The lower rail 13 is an example of a rail, and the upper rail 14 is an example of a slider.

  17 and 18 are side views of the slide lock mechanism 40, and FIG. 17 shows the slide lock state and FIG. 18 shows the slide unlock state. As shown in FIG. 17, in the lower rail 13, the biasing member 42 can bias the lock member 41 upward from the lower side, and can press the inner flange 13 a of the lower rail 13 from the lower side. The lock member 41 is fixed to one end of the biasing member 42, and the other end (not shown) of the biasing member 42 is fixed to the upper rail 14. Therefore, in the slide unlocking state of FIG. 18, the biasing member 42 and the lock member 41 can slide in the longitudinal direction of the vehicle together with the upper rail 14. The biasing member 42 is, for example, a leaf spring.

  The engagement between the locking member 41 attached to the upper rail 14 and the inner flange 13 a of the lower rail 13 locks the locking member 41 to the inner flange 13 a, that is, the lower rail 13. The inner flanges 13a extend in the vehicle vertical direction and the vehicle longitudinal direction, respectively. The specifications of the shape and the like of the inner flange 13a are not limited to this example.

  As shown in FIGS. 17 and 18, the inner flange 13a is provided with a plurality of notches 13c (recesses) at a constant pitch (interval) in the longitudinal direction of the vehicle. The notch 13c is open toward the vehicle lower side at the lower edge of the inner flange 13a. 17 and 18 show only one of the two inner flanges 13a.

  On the other hand, the lock member 41 is formed, for example, in a substantially rectangular plate shape substantially along the vehicle longitudinal direction and the vehicle width direction, and each of the edges of the lock member 41 in the vehicle width direction has a constant pitch in the vehicle longitudinal direction A plurality of projections 41a (nails) are provided at (intervals). The pitch of the notches 13c is the same as the pitch of the protrusions 41a. The specifications such as the configuration and arrangement of the lock member 41 and the biasing member 42 are not limited to this example.

  As shown in FIG. 17, when the lock member 41 is lifted by the biasing member 42 and positioned at the lock position Plk, the plurality of projections 41a of the lock member 41 are accommodated in the plurality of notches 13c of the inner flange 13a. Ru. As a result, the lock member 41 and thus the upper rail 14 are locked to the lower rail 13 (slide lock state).

  On the other hand, as shown in FIG. 18, the lock member 41 is biased upward (elastic repulsive force) by the projection 62c1 (see FIG. 19) of the actuating member 62 of the slide lock releasing device 60 described later. Is pushed downward, the projection 41a is disengaged downward from the notch 13c, and the locking member 41 is positioned at the unlocking position Prl below the lower edge of the inner flange 13a. As a result, the lock member 41 and thus the upper rail 14 can slide in the longitudinal direction of the vehicle with respect to the lower rail 13 (slide unlock state).

  Although described in detail later, in conjunction with the operation of the link member 51, the protrusion 62c1 of the actuating member 62 presses the lock member 41 downward. On the other hand, when the depression of the lock member 41 by the projection 62c1 is released, the biasing member 42 lifts the lock member 41 from the bottom up, and the lock member 41 is locked to the inner flange 13a. With such a configuration, the slide lock mechanism 40 can lock the lock member 41 to the inner flange 13a at a plurality of longitudinal positions (arbitrary positions) within the range in which the inner flange 13a is provided. In other words, the slide lock mechanism 40 can position the upper rail 14 at a plurality of front and rear positions (arbitrary positions) of the lower rail 13.

  FIG. 19 is a perspective view of the lower rail 13, the upper rail 14 and the slide lock release device 60, FIG. 20 is a plan view of the lower rail 13, the upper rail 14 and the slide lock release device 60, and FIG. 21 is the lower rail 13, the upper rail 14, And a front view of the slide lock release device 60. FIG. 19 to 21 illustrate, as an example, the slide lock release device 60 attached to the lower rail 13 on the right side in the traveling direction of the two parallel lower rails 13. Therefore, in the following description of the slide lock release device 60, the left side in the vehicle width direction is a direction approaching another lower rail 13, and the right side in the vehicle width direction is a direction away from the other lower rail 13.

  As shown in FIGS. 19 to 21, the slide lock release device 60 includes a support member 61, an actuating member 62, a shaft 63, and a return spring 64.

  The support member 61 includes a bottom wall 61a, an upright wall 61b, and a hanging wall 61c.

  The bottom wall 61 a is fixed to the upper rail 14 by a coupler such as a screw in a state of being superimposed on the top surface 14 a of the upper rail 14. The bottom wall 61a intersects with the vertical direction of the vehicle, and extends in the longitudinal direction and the width direction of the vehicle.

  The bottom wall 61a is provided with a through hole 61a3 into which one end of the return spring 64 is inserted. One end of the return spring 64 penetrates the through hole 61a3 downward, and is hooked on the periphery of the through hole 61a3 of the bottom wall 61a.

  The standing wall 61b protrudes upward at a position substantially above the side wall 13b on the left side of the lower rail 13 from the left end in the vehicle width direction of the front portion of the bottom wall 61a. The upright wall 61b intersects the vehicle width direction, and extends along the vehicle longitudinal direction and the vehicle vertical direction.

  As shown in FIG. 20, a through hole 61d is provided in the standing wall 61b. The shaft 63 is fixed to the upright wall 61 b in a state of penetrating the through hole 61 d in the vehicle width direction. The shaft 63 constitutes a cylindrical portion 63a which protrudes leftward in the vehicle width direction from the standing wall 61b.

  The hanging wall 61c protrudes downward at a position further rearward than the standing wall 61b and at a position further to the left than the side wall 13b on the left side of the lower rail 13 from the left end in the vehicle width direction of the rear of the bottom wall 61a. ing. The hanging wall 61c intersects with the longitudinal direction of the vehicle, and extends along the lateral direction of the vehicle and the vertical direction of the vehicle.

  As shown in FIGS. 19 and 21, the hanging wall 61c is provided with a holding portion 61e provided with a notch. The outer tube 72 of the cable 70 is fixed to the holding portion 61e.

  The actuating member 62 has a central wall 62a, an input wall 62b, and an output wall 62c.

  The central wall 62a is disposed adjacent to the left in the vehicle width direction of the standing wall 61b. The central wall 62a intersects the vehicle width direction, and extends along the vehicle longitudinal direction and the vehicle vertical direction.

  As shown in FIG. 20, the central wall 62a is provided with a through hole 62a1. The shaft 63 penetrates the through hole 62a1 in the vehicle width direction. The clearance between the through hole 62a1 and the outer periphery of the shaft 63 is set relatively small so that the central wall 62a can swing along the outer periphery of the shaft 63. That is, the shaft 63 supports the center wall 62a so as to be rotatable around a rotation center Ax2 along the vehicle width direction. The rotation center Ax2 is the center of the shaft 63.

  As shown in FIGS. 19 and 20, the rear end of the central wall 62a is provided with a protrusion 62a2 that protrudes rearward. The other end of the return spring 64 is hooked on the front portion 62a3 of the central wall 62a. The front portion 62a3 of the central wall 62a is an example of the biasing portion Pu.

  As shown in FIGS. 19 and 21, the input wall 62b is provided so as to extend downward while bending like a crank from the lower part of the central wall 62a to the left. The input wall 62 b protrudes downward at a position further to the left than the left side wall 13 b of the lower rail 13. The input wall 62b intersects the vehicle width direction, and extends along the vehicle longitudinal direction and the vehicle vertical direction.

  As shown in FIG. 19, the input wall 62b is provided with a through hole 62b1. The hook 71b of the inner wire 71 is hooked on the edge 62b2 of the through hole 62b1. Further, at the rear end of the input wall 62b, a protrusion 62b3 protruding upward is provided.

  As shown in FIGS. 19 and 21, the output wall 62c is provided so as to extend downward while bending like a crank from the front of the central wall 62a to the right. The output wall 62c penetrates the through hole 14b provided in the upper rail 14 downward and is in contact with the upper surface of the lock member 41 (see FIGS. 17 and 18). At the lower end of the output wall 62c, a projection 62c1 is provided that protrudes diagonally rearward.

  22 and 23 are side views of a part of the slide lock release device 60, and FIG. 22 is a view showing a state where the actuating member 62 is positioned at the initial position P3i. FIG. Is a diagram showing a state in which it is positioned at the maximum rotation position P3e.

  As described above, one end of the return spring 64 is hooked on the bottom wall 61a of the support member 61, and the other end of the return spring 64 is hooked on the front portion 62a3 of the central wall 62a. With such a configuration, the return spring 64 biases the actuating member 62 in the direction R22.

  Therefore, at the initial position P3i of FIG. 22, the lower end of the projection 62a2 provided at the rear end of the central wall 62a of the actuating member 62 is in contact with the upper surface 61a1 of the bottom wall 61a. The upper surface 61a1 of the bottom wall 61a functions as a stopper that limits the rotation of the actuating member 62 in the direction R22. The lower end of the protrusion 62a2 of the central wall 62a is an example of the second contact portion Pc2. The bottom wall 61a is an example of a wall.

  When the input wall 62b is pulled backward by the inner wire 71, the actuating member 62 can pivot in the direction R21 and can pivot to the maximum pivot position P3e. The angle (posture) of the maximum rotation position P3e is determined by the amount of pulling by the inner wire 71 and by that, the amount of rotation of the link member 51, that is, the amount of forward inclination (angle) of the seatback 12 in the walk-in mode.

  By the rotation of the actuating member 62 in the direction R21, the projection 62c1 of the output wall 62c presses the lock member 41 (see FIGS. 17 and 18) downward, whereby the slide lock mechanism 40 slides out of the slide lock state. Transition to the lock state. Here, as shown in FIGS. 22 and 23, the shape of the tip of the protrusion 62c1 is curved (cylindrical). Therefore, when the actuating member 62 pivots in the direction R21 and the projection 62c1 pushes the lock member 41, the projection 62c1 makes line contact with the actuating member 62 regardless of the pivot angle. When the pulling by the inner wire 71 is released, the actuating member 62 is biased by the return spring 64 in the direction R22 and returns to the initial position P3i. Thus, the slide lock mechanism 40 transitions (returns) from the slide unlock state to the slide lock state.

  Further, as shown in FIG. 23, the lower surface 61a2 of the bottom wall 61a faces the projection 62b3 of the actuating member 62 located at the maximum rotation position P3e with a gap. Therefore, the lower surface 61a2 of the bottom wall 61a abuts on the projection 62b3 when the actuating member 62 pivots in the direction R21 beyond the maximum pivoting position P3e for some reason, and exceeds the abutted position It can function as a preliminary stopper that limits the rotation in the direction R21. The tip of the protrusion 62b3 is an example of the first contact portion Pc1.

  As described above, in the slide lock release device 60, the edge of the through hole 62a1 provided in the central wall 62a of the actuating member 62 is rotatably supported by the shaft 63. Therefore, at the support portion Ps shown in FIG. 22, the actuating member 62 is rotatably supported by the support member 61. Further, the edge 62 b 2 of the through hole 62 b 1 of the input wall 62 b of the actuating member 62 is pulled from the inner wire 71. Thus, at the pulling site Pd shown in FIG. 22, the actuating member 62 is pulled from the inner wire 71 (cable 70). Further, the protrusion 62 c 1 of the output wall 62 c of the actuating member 62 presses the lock member 41. Therefore, the actuating member 62 presses the lock member 41 at the pressing portion Pp shown in FIG. The inner wire 71 (cable 70) is an example of the input member. The input member is not limited to the inner wire 71 (cable 70).

  As is clear from FIG. 21, in the present embodiment, the pulling portion Pd and the pressing portion Pp are offset from the support portion Ps in the vehicle width direction to opposite sides. Therefore, in the present embodiment, for example, the balance in the vehicle width direction of the actuating member 62 with respect to the support region Ps, as compared to the case where the pulling portion Pd and the pressing portion Pp deviate from the support portion Ps to the same side in the vehicle width direction. Is easy to secure. Therefore, according to the present embodiment, for example, it is possible to suppress that the support member 61 is inclined or bent in the vehicle width direction by the force received from the actuating member 62.

  Further, in the present embodiment, as is apparent from FIG. 19, both the first contact site Pc1 and the pulling site Pd are provided on the input wall 62b. Therefore, the first contact portion Pc1 and the pulling portion Pd are aligned in a direction (first direction) intersecting the rotation center Ax2 when viewed from above or in front, for example. That is, the first contact portion Pc1 and the pulling portion Pd are not shifted in the axial direction (vehicle width direction) of the rotation center Ax2. If the first contact site Pc1 and the pulling site Pd are shifted in the axial direction of the rotation center Ax2, the reaction force is received from the pulling site Pd and the first contact site Pc1 receives the reaction force. Since the part is shifted in the axial direction of the rotation center Ax2, a force (rotational moment) is generated in the actuating member 62 in the axial direction of the rotation center Ax2, and the actuating member 62 is inclined or bent in the axial direction of the rotation center Ax2. It becomes easier to buckle. In this respect, according to the present embodiment, since the first contact portion Pc1 and the pulling portion Pd are not shifted in the axial direction of the rotation center Ax2, for example, the operating member 62 is in the axial direction of the rotation center Ax2. It is possible to suppress tilting, bending or buckling.

  Further, in the present embodiment, as is apparent from FIG. 19, the second contact portion Pc2 and the biasing portion Pu are both provided on the central wall 62a. Therefore, the second contact portion Pc2 and the urging portion Pu are aligned in a direction (second direction) intersecting the rotation center Ax2 when viewed from above or in front, for example. That is, the second contact portion Pc2 and the urging portion Pu are not shifted in the axial direction (vehicle width direction) of the rotation center Ax2. If the second abutment site Pc2 and the biasing site Pu are displaced in the axial direction of the rotation center Ax2, a site to which a force is input from the biasing site Pu, and a reaction force from the second abutment site Pc2 Since the part receiving the force is displaced in the axial direction of the rotation center Ax2, a force (rotational moment) is generated in the actuating member 62 in the axial direction of the rotation center Ax2, and the actuating member 62 is inclined in the axial direction of the rotation center Ax2. It becomes easy to bend and buckle. In this respect, according to the present embodiment, since the second contact portion Pc2 and the urging portion Pu are not shifted in the axial direction of the rotation center Ax2, for example, the operating member 62 is in the axial direction of the rotation center Ax2. Can be restrained from being inclined, bent or buckled.

  Further, in the present embodiment, as is apparent from FIGS. 22 and 23, the first abutment site Pc1 and the second abutment site Pc2 of the actuating member 62 are the lower surface 61a2 and the upper surface 61a1 of the bottom wall 61a of the support member 61. And can be abutted. Therefore, since the bottom wall 61a functions as a stopper for both the first abutment site Pc1 and the second abutment site Pc2, for example, the slide lock releasing device 60 can be compared to the configuration in which the stoppers are separately provided. It can be made more compact or simpler.

  As mentioned above, although the embodiment of the present invention was illustrated, the above-mentioned embodiment is an example, and limiting the scope of the invention is not intended. The present invention can be implemented in other various forms, and various omissions, replacements, combinations, and modifications can be made without departing from the scope of the invention. These various forms and modified forms are included in the scope and the gist of the invention, and are included in the invention described in the claims and the equivalent scope thereof. In addition, the specifications (structure, type, direction, shape, size, length, width, thickness, height, number, placement, position, part, material, etc.) of each configuration or shape are changed appropriately. Can be implemented.

  11 ... Seat cushion, 15R ... Cushion base (seat cushion), 16R ... Support (seat cushion), 20 ... Reclining lock mechanism, 30 ... Reclining lock release device, 32 ... Release lever (operation lever), 32a ... Base, 32b ... First operation arm, 32c: second operation arm, 32d: weight arm (weight), 32d1: arc portion, 32f: notch (gap), 33: return spring, 34: projecting wall, 34a: peripheral wall, 34c: hooking portion , 34d ... end (stopper), Ax ... center of rotation.

Claims (4)

With a seat cushion,
A reclining lock mechanism fixed to the seat cushion and switching between a reclining lock state and an unlock state of the seat back;
An operation lever which is supported by the seat cushion so as to be rotatable about a rotation center and which brings the reclining lock mechanism into an unlocked state;
Equipped with
The control lever is
A base rotatably provided about the rotation center;
A first operation arm extending forward from the base below the pivoting center;
A second operation arm extending rearward from the base below the pivoting center;
A weight protruding upward from the base and at least a portion of which is positioned above the rotation center;
The vehicle seat reclining lock release device.   The vehicle seat reclining lock release device according to claim 1, wherein the weight includes an arc portion extending along a circumferential direction around the rotation center.   It projects from the seat cushion in the axial direction of the rotation center, penetrates the gap between the weight and the base, and rotates the first operation arm and the second operation arm of the operation lever in the operation direction The vehicle seat reclining lock release device according to claim 1 or 2, further comprising: a projecting wall having a stopper that limits the angle. It has a return spring that biases the operating lever in the direction opposite to the operating direction,
The vehicle seat reclining lock release device according to claim 3, wherein the projecting wall has a hooking portion that hooks one end of the return spring.

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