JP2018052174A - Lock release device of seat for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a lock release device of a seat for a vehicle having a novel constitution, for example, a simpler constitution which is further suppressed in malfunctions.SOLUTION: A torsion spring 38 (energization member) energizes a changeover member 37 so that a following arm 37a (second pressing part) of the changeover member 37 follows a protrusion 35a (second abutment part) of a link member 35 which moves to a direction D3 (third direction). By this constitution, not only a constitution of a portion in which the changeover member 37 and the link member 35 are connected to each other, but also a constitution of a changeover mechanism 30 (lock release device) is further simplified compared with a constitution in which the changeover member 37 and the link member 35 are linked to each other by the mechanical connection of the changeover member 37 and the link member 35, for example, a constitution in which the changeover member 37 moves to a direction Cw2 by being pulled by the link member 35.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a vehicle seat unlocking device.

  2. Description of the Related Art Conventionally, an unlocking device for a vehicle seat that is configured to be able to rotate a seat back by operating a reclining release lever, and to tilt the seat back forward by a predetermined angle and slide the seat by operating a walk-in lever. Known (for example, Patent Document 1).

JP 2005-119368 A

  In this type of apparatus, since a plurality of members are connected so as to be rotatable or slidable, for example, the configuration may be complicated, or the number of parts may be difficult to move smoothly.

  Accordingly, one of the objects of the present invention is to obtain a vehicle seat unlocking device having a new configuration with less inconvenience, such as a simpler configuration.

  The vehicle seat unlocking device of the present invention, for example, moves in a first direction in response to an operation of a reclining lock mechanism that switches between a reclining lock state and an unlocking state of a seat back, and a first operation member. A release member that switches the reclining lock mechanism from a locked state to an unlocked state, a pressing member that is fixed to the seat back and has a first pressing portion, and a first member that can contact the first pressing portion A switching member having a contact portion, a second pressing portion, and a connecting portion to which a movable member that switches the seat slide lock mechanism from the locked state to the unlocked state is connected, and is tilted forward When the first abutting portion is pushed by the first pressing portion interlocked with the seat back, the switching member moves in the second direction, and the connecting portion The connected movable member moves to switch the slide lock mechanism from a locked state to an unlocked state, and the switching member moves in a direction opposite to the second direction, whereby the first contact portion is moved to the first direction. A second abutting portion provided between the switching member, the second operating member and the release member, which is deviated from the movement path of the pressing portion, and is capable of abutting on the second pressing portion. A movement of the transmission member in the third direction according to the operation of the second operation member, and a movement of the transmission member in the third direction according to the operation of the second operation member to the release member. The release member is transmitted to move in the first direction, and the movement of the release member in the first direction according to the operation of the first operation member is not transmitted to the transmission member, and the transmission member is moved. Do not move in the third direction A one-way connecting portion that connects the delivery member and the release member, and the switching member so that the second pressing portion follows the second contact portion of the transmission member that moves in the third direction. A biasing member that biases in a direction opposite to the second direction.

  In the vehicle seat unlocking device, for example, the second pressing portion is in a first position away from the initial position in the second direction, and in the opposite direction from the initial position to the second direction. The second pressing portion is in contact with the second contact portion at the initial position, and the second position is between the initial position and the first position. In the meantime, it is separated from the second contact portion, and in contact with the second contact portion between the initial position and the second position.

  In the vehicle seat unlocking device, for example, the second contact portion is moved from the second pressing portion positioned at the second position to the third direction of the transmission member. It moves away with.

  In the vehicle seat lock release device, for example, the release member is provided so as to be rotatable around a second rotation center, and receives a force based on an operation of the first operation member on the release member. The one connection location is located farther from the second rotation center than the second connection location receiving the force based on the operation of the second operation member in the release member.

  In the vehicle seat unlocking device, the biasing member biases the switching member so that the second pressing portion of the switching member follows the second contact portion of the transmission member moving in the third direction. . Therefore, for example, compared to the configuration in which the second pressing portion and the second contact portion are mechanically coupled, the configuration of the portion where the switching member and the transmission member are connected, and thus unlocking the vehicle seat The configuration of the apparatus is easily simplified.

FIG. 1 is a schematic and exemplary side view of a vehicle seat to which the unlocking device of the embodiment is applied, and is a view showing the operation of the seat in a slide mode. FIG. 2 is a schematic and exemplary side view of a vehicle seat to which the unlocking device of the embodiment is applied, and is a view illustrating the operation of the seat in the reclining mode. FIG. 3 is a schematic and exemplary side view of a vehicle seat to which the unlocking device of the embodiment is applied, and is a diagram illustrating the operation of the seat in the walk-in mode. FIG. 4 is a schematic and exemplary exploded perspective view of the lock release device of the embodiment. FIG. 5 is a schematic and exemplary side view of the unlocking device according to the embodiment as viewed from the outside in the vehicle width direction, and is a diagram illustrating a state in which each member and each component are in an initial position. FIG. 6 is a schematic and exemplary side view of the unlocking device according to the embodiment as viewed from the inside in the vehicle width direction, and is a diagram illustrating a state in which each member and each component are in an initial position. FIG. 7 is a schematic and exemplary side view of the lock release device according to the embodiment as viewed from the outside in the vehicle width direction, and is a diagram illustrating a state in which the second operation member is operated. FIG. 8 is a schematic and exemplary side view of the lock release device according to the embodiment as viewed from the outside in the vehicle width direction, and is a diagram illustrating a state in which the first operation member is operated. FIG. 9 is a schematic and exemplary side view of the unlocking device according to the embodiment as viewed from the inside in the vehicle width direction, and shows a state in which the first operating member is operated. FIG. 10 is a schematic and exemplary side view of the unlocking device according to the embodiment as viewed from the inside in the vehicle width direction, and is a diagram illustrating a state in which the second operation member is operated. FIG. 11 is a schematic and exemplary side view of the unlocking device according to the embodiment as seen from the inside in the vehicle width direction, and shows a state in which the seat back is largely tilted forward by the operation of the second operation member. It is. FIG. 12 is a schematic and exemplary side view of a part of the unlocking device of the embodiment as viewed from the outside in the vehicle width direction, and includes a first contact portion, a second pressing portion, and a second portion. It is a figure which shows operation | movement of the contact part.

  Hereinafter, exemplary embodiments of the present invention are disclosed. The configuration of the embodiment shown below, and the operation and result (effect) brought about by the configuration are examples. The present invention can be realized by configurations other than those disclosed in the following embodiments. 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 convenience in order to distinguish parts, parts, positions, directions, etc., and do not indicate priority or order.

  FIGS. 1 to 3 are side views of the vehicle seat 10, FIG. 1 is a diagram illustrating the operation of the seat 10 in the slide mode, and FIG. 2 is a diagram illustrating the operation of the seat 10 in the reclining mode. FIG. 3 shows the operation of the seat 10 in the walk-in mode.

  In each figure, directions are shown for convenience. X indicates the right side in the vehicle width direction, Y indicates the front in the vehicle front-rear direction, and Z indicates the upper side in the vehicle vertical direction.

  As shown in FIG. 1, the vehicle seat 10 is configured to be slidable between a front position Psf and a rear position Psb, and among a plurality of positions between the front position Psf and the rear position Psb. It can be fixed to either of these. In the present embodiment, the seat 10 is supported so as to be movable along a rail 13 extending along the vehicle longitudinal direction. A slide lock mechanism (not shown) switches between a locked state in which the seat 10 cannot slide and an unlocked state in which the sheet 10 can slide. Hereinafter, the lock state of the slide lock mechanism is referred to as a slide lock state, and the unlock state of the slide lock mechanism is referred to as a slide unlock state.

  The seat 10 includes a seat cushion 11 and a seat back 12. As shown in FIG. 2, the seatback 12 is configured to be movable between a forward tilt position Pif and a rearward tilt position Pib, and a plurality of positions between the forward tilt position Pif and the rearward tilt position Pib. It is comprised so that fixation to any of these is possible. The forward tilt position Pif can also be referred to as a folding position, and the backward tilt position Pib can also be referred to as a deployment position. In the present embodiment, the seat back 12 is provided so as to be rotatable around a rotation center Ase that is positioned below the seat back 12 and extends in the vehicle width direction, and the inclination angle of the seat back 12 is variable. Can be set. The reclining lock mechanism 20 (see FIG. 4 and the like) is between a locked state in which the seat back 12 is not movable with respect to the seat cushion 11 and an unlocked state in which the seat back 12 is movable with respect to the seat cushion 11. Then it switches. Hereinafter, the locked state of the reclining lock mechanism 20 is referred to as a reclining lock state, and the unlocked state of the reclining lock mechanism 20 is referred to as a reclining unlocked state.

  In the present embodiment, the seat 10 can operate in the following three modes (1) to (3) related to the sliding and reclining of the seat 10.

(1) Slide mode (Fig. 1)
In the slide mode, the seat 10 slides along the rail 13. For example, the slide lock mechanism is switched from the slide lock state to the slide unlock state in response to an operation by an occupant of the slide release lever 14 provided below and in front of the seat cushion 11. Moreover, according to cancellation | release of operation of the slide release lever 14 by a passenger | crew, a slide lock mechanism switches from a slide unlocked state to a slide locked state.

(2) Reclining mode (Figure 2)
In the reclining mode, the seat back 12 rotates about the rotation center Ase. For example, the reclining lock mechanism 20 switches from the reclining lock state to the reclining unlocked state in response to a predetermined operation by an occupant of the reclining release lever 15 provided on the side of the seat cushion 11. Further, the reclining lock mechanism 20 switches from the reclining unlocked state to the reclining locked state in response to the release of the predetermined operation of the reclining release lever 15 by the occupant. The reclining release lever 15 is an example of a second operation member.

(3) Walk-in mode (Fig. 3)
In the walk-in mode, the seat 10 slides forward of the vehicle with the seat back 12 tilted forward at a predetermined angle. For example, the reclining lock mechanism 20 is switched from the reclining lock state to the reclining unlock state in response to a predetermined operation by an occupant of the walk-in lever 16 provided on the upper portion of the seat back 12, and the slide lock mechanism is moved from the slide lock state. Switch to slide unlock state. However, in the walk-in mode, the seat back 12 is maintained in a state of being tilted forward at a predetermined angle by the switching mechanism 30 described later. The seat 10 may slide forward of the vehicle by the urging force of the urging member, or may slide forward of the vehicle by being pushed by the occupant. The walk-in lever 16 is an example of a first operation member.

(Configuration of the switching mechanism 30)
4 is an exploded perspective view of the switching mechanism 30, and FIG. 5 is a side view of the switching mechanism 30 as viewed from the outside in the vehicle width direction, showing a state in which each member or each component is in the initial position. These are the side views seen from the vehicle width direction inner side of the switching mechanism 30, Comprising: It is a figure which shows the state which has each member and each component in an initial position. 7 is a side view of the switching mechanism 30 as viewed from the outside in the vehicle width direction, and shows a state in which the reclining release lever 15 is operated. FIG. 8 shows the switching mechanism 30 from the outside in the vehicle width direction. It is the side view which was seen, and is a figure which shows the state by which the walk-in lever 16 was operated. The switching mechanism 30 operates the seat 10 in the mode (2) according to the operation of the reclining release lever 15 and the operation of the seat 10 in the mode (3) according to the operation of the walk-in lever 16. Realize. The switching mechanism 30 is an example of a lock release device.

(Support plate 31)
As shown in FIGS. 4 to 6, the switching mechanism 30 has a support plate 31. The support plate 31 supports each component of the switching mechanism 30. The support plate 31 extends substantially along the vehicle vertical direction and the vehicle front-rear direction, and has an outer surface 31a facing outward in the vehicle width direction and an inner surface 31b facing inward in the vehicle width direction. The support plate 31 is fixed to the seat cushion 11.

(Recliner lock mechanism 20)
As shown in FIG. 4, the reclining lock mechanism 20 is fixed to the support plate 31 while being inserted into a through hole 31 c provided in the support plate 31. The reclining lock mechanism 20 is exposed on both the outer surface 31 a side and the inner surface 31 b side of the support plate 31.

  The reclining lock mechanism 20 includes a base portion 21, a rotation portion 22, a coupling portion (not shown), an operation portion 23, and an operation mechanism (not shown). The base portion 21 is fixed to the support plate 31 and thus the seat cushion 11. The rotation part 22 is provided so as to be rotatable around a rotation center Ase and is fixed to the seat back 12. The coupling portion moves between a coupling position where the rotating portion 22 is coupled to the base portion 21 and a blocking position where the rotating portion 22 is blocked from the base portion 21. The operation unit 23 is provided to be rotatable around a rotation center Ase. The operation mechanism includes, for example, a cam mechanism, a biasing member, and the like (not shown). When the operation unit 23 is rotated around the rotation center Ase in the direction Cw1 in FIG. When the operation unit 23 is rotated in the direction Ccw1 in FIG. 4 (the direction opposite to the direction Cw1), the coupling unit is moved to the coupling position. A state in which the rotating unit 22 is coupled to the base unit 21 by the coupling unit is a reclining lock state, and a state in which the rotating unit 22 is not coupled to the base unit 21 by the coupling unit, that is, the rotating unit 22 is rotated. A state that can rotate around the moving center Ase is a reclining unlocked state.

(Spiral spring 18)
As shown in FIG. 6, the seat back 12 is biased forwardly by a spiral spring 18. Therefore, in the reclining unlocked state, when the occupant or the like does not push the seat back 12 in the backward tilt direction, the seat back 12 moves in the direction Cw1 around the rotation center Ase. The spiral spring 18 can also be referred to as a biasing member.

(Pressing member 24)
As shown in FIGS. 4 and 6, the pressing member 24 is fixed to the seat back 12 and the rotating portion 22 of the reclining lock mechanism 20, and rotates around the rotation center Ase together with the seat back 12 and the rotating portion 22. Move. The pressing member 24 has a contact arm 24a that protrudes in a fan shape toward the outer side in the radial direction of the rotation center Ase. The movement path Pt of the contact arm 24a accompanying the rotation of the seat back 12 has an arc shape centered on the rotation center Ase. The pressing member 24 is an example of a pressing member. The contact arm 24a is an example of a first pressing portion.

(Operation lever 33)
As shown in FIG. 4, the operation lever 33 is connected to the operation unit 23 via a shaft 32 that penetrates the reclining lock mechanism 20. As shown in FIG. 5, the operation lever 33 extends outward in the radial direction of the rotation center Ase, for example, substantially toward the front of the vehicle. The shaft 32 and the operation lever 33 rotate around the rotation center Ase together with the operation unit 23. The torsion spring 34 biases the operation unit 23, the shaft 32, and the operation lever 33 in a direction to return to the initial position, that is, in the direction Ccw1 around the rotation center Ase. The operation lever 33 is an example of a release member.

(Recliner release lever 15)
As shown in FIG. 5, the reclining release lever 15 is supported by the seat cushion 11 so as to be rotatable about a rotation center Are. The reclining release lever 15 extends elongated in the radial direction of the rotation center Are, for example, substantially toward the front of the vehicle. The rotation center Are is substantially along the vehicle width direction. The reclining release lever 15 is urged by a biasing member (not shown) such as a torsion spring or a coil spring in the direction of returning to the initial position, for example, in the direction Cw4 around the rotation center Are.

(Link member 35)
As shown in FIGS. 4 and 5, the link member 35 extends between the operation lever 33 and the reclining release lever 15. The link member 35 has an approximately constant width and extends substantially along the vehicle vertical direction. The link member 35 is plate-shaped. The link member 35 is connected to the operation lever 33 at a connection point Pl that is distant in the radial direction from the rotation center Ase, for example, forward of the vehicle. The link member 35 is rotatably connected to both the operation lever 33 and the reclining release lever 15. The pivot fulcrum (connection point Pl) between the link member 35 and the operation lever 33 is located at one end in the longitudinal direction of the link member 35, for example, the upper end, and the pivot fulcrum between the link member 35 and the reclining release lever 15 is The link member 35 is located at the other end in the longitudinal direction, for example, at the lower end. The link member 35 is an example of a transmission member.

  As shown in FIG. 5, an operation portion 15 a that is operated by the occupant is provided at a position radially outward from the rotation center Are of the reclining release lever 15, for example, at a position away from the front of the vehicle. The link member 35 is connected to the link member 35 on the opposite side of the operation portion 15a with respect to the rotation center Are, for example, on the vehicle rear side with respect to the rotation center Are.

  The link member 35 has a protrusion 35a substantially parallel to the rotation center Are. The protrusion 35a is coupled to the link member 35 by a coupling tool 35c such as a screw. The protrusion 35a is an example of a second contact portion.

(Walk-in wire 36)
As shown in FIG. 5, the walk-in wire 36 is connected to the operation lever 33 at a connection point Pww that is radially outward from the rotation center Ase, for example, at the front of the vehicle. The walk-in wire 36 includes a core wire 36a and a cover 36b that covers the core wire 36a. The cover 36b is fixed to the seat cushion 11, the seat back 12, and the like. The cover 36b supports the core wire 36a so as to be slidable in the longitudinal direction. The core wire 36a is connected to the operation lever 33 at the connection point Pww.

  Here, the connection point Pww between the operation lever 33 and the walk-in wire 36 is farther from the rotation center Ase than the connection point Pl between the operation lever 33 and the link member 35. Therefore, even when the walk-in lever 16 is relatively small and the moment arm of the operation force is difficult to be set long, the occupant can operate the walk-in lever 16 with a relatively small operation force. The connection point Pww is an example of a first connection location. The connection point Pl is an example of a second connection location.

(One-way connection 40)
As shown in FIGS. 4 and 5, the operation lever 33 and the link member 35 are connected via a one-way connection portion 40. Specifically, an elongated hole 35b is provided at the upper end portion of the link member 35, and a projection 33a penetrating the elongated hole 35b is provided on the operation lever 33. The protrusion 33a is located at the upper end of the elongated hole 35b in a state where the operation lever 33 and the link member 35 are located at the initial position shown in FIG. Here, as shown in FIG. 7, when the link member 35 moves in the direction D3 according to the operation of the reclining release lever 15, the protrusion 33a is pushed downward by the upper edge of the elongated hole 35b, and the operation lever 33 is It rotates in the direction Cw1 around the rotation center Ase. That is, the operation lever 33 is interlocked with the movement of the link member 35 from the initial position in the direction D3. The protrusion 33a can be coupled to the operation lever 33 by a coupling tool 33b such as a screw. The protrusion 33a can also be referred to as a slider, and the elongated hole 35b can also be referred to as a guide rail. The direction D3 is an example of a third direction.

  On the other hand, in a state where the operation lever 33 and the link member 35 are located at the initial position shown in FIG. 5, the core wire 36 a of the walk-in wire 36 is moved according to the operation of the walk-in lever 16 as shown in FIG. 8. When the pulled operation lever 33 rotates in the direction Cw1 around the rotation center Ase, the protrusion 33a moves in the direction D3 along the long hole 35b. Therefore, in this case, the link member 35 is not interlocked with the movement of the operation lever 33 and remains in the same initial position as in FIG. Therefore, the reclining release lever 15 does not move depending on the operation of the walk-in lever 16.

(Switching member 37)
As shown in FIGS. 4 to 6, the switching member 37 is supported so as to be rotatable around a rotation center Asw deviated from the movement path of the link member 35. In the present embodiment, as an example, the rotation center Asw is located away from the link member 35 toward the rear of the vehicle. The rotation center Asw is substantially along the vehicle width direction. The switching member 37 is rotatable in the direction Ccw2 and the direction Cw2 from the initial position shown in FIGS. The direction Ccw2 is an example of the second direction. The direction Cw2 is an example of a direction opposite to the second direction. The rotation center Asw is an example of a first rotation center.

(Following arm 37a of switching member 37)
As shown in FIGS. 4 and 5, the switching member 37 has a follow-up arm 37 a extending radially outward from the rotation center Asw, for example, substantially forward of the vehicle. The follower arm 37a is positioned above the protrusion 35a. The follower arm 37a is urged by the torsion spring 38 in the direction Cw2 around the rotation center Asw. Thereby, the follower arm 37a is in contact with the protrusion 35a of the link member 35 from above. The force in the direction D3 acting on the link member 35 via the follower arm 37a by the torsion spring 38 is linked from the reclining release lever 15 biased toward the initial position in FIG. 5 by a biasing member (not shown). The force in the direction opposite to the direction D3 acting on the member 35 is smaller. The torsion spring 38 is an example of an urging member.

(Operation arm 37b of the switching member 37)
As shown in FIGS. 4 and 6, the switching member 37 has an operation arm 37 b extending radially outward from the rotation center Asw. The slide release wire 39 is connected to the operation arm 37b at the connection point Pws. The operation arm 37b rotates integrally with the tracking arm 37a around the rotation center Asw.

  As shown in FIG. 6, the slide release wire 39 includes a core wire 39a and a cover 39b that covers the core wire 39a. The cover 39b is fixed to the seat cushion 11 or the like. The cover 39b supports the core wire 39a so as to be slidable in the longitudinal direction. The core wire 39a is connected to the operation arm 37b at the connection point Pws. When the core wire 39a is pulled through the connection point Pws by the operation arm 37b that rotates in the direction Ccw2 around the rotation center Asw, the slide lock mechanism is switched from the slide lock state to the slide unlock state. The core wire 39a (slide release wire 39) is an example of a movable member. The connection point Pws is an example of a connection unit.

(Interference arm 37c of switching member 37)
As shown in FIGS. 4 and 6, the switching member 37 includes an interference arm 37 c extending outward in the radial direction of the rotation center Asw. The interference arm 37c is provided with a protrusion 37d. The protrusion 37d is coupled to the interference arm 37c by a coupling tool 37e such as a screw, for example. The protrusion 37d is an example of a first contact portion.

(Configuration of switching member 37 and arrangement of each part in switching member 37)
As shown in FIG. 4, the follower arm 37 a faces the outer surface 31 a of the support plate 31, and the operation arm 37 b and the interference arm 37 c face the inner surface 31 b of the support plate 31. In other words, the follower arm 37a, the operation arm 37b, and the interference arm 37c are positioned on opposite sides of the support plate 31. A through hole 31 e is provided in the support plate 31. The follow arm 37a, the operation arm 37b, and the interference arm 37c are integrated by a shaft 37g that penetrates the through hole 31e. With such a configuration, the link member 35 related to the tracking arm 37a, the walk-in wire 36 and the pressing member 24 related to the operation arm 37b and the interference arm 37c can be arranged more efficiently while avoiding mutual interference. .

  The follow-up arm 37a, the connection point Pws of the operation arm 37b, and the protrusion 37d of the interference arm 37c rotate integrally around the rotation center Asw, respectively, through arcuate movement paths centered on the rotation center Asw. In the present embodiment, as an example, the operation arm 37b and the interference arm 37c are configured as a single V-shaped component 37f.

(Range of movement of the switching member 37)
As shown in FIGS. 4 and 6, the protrusion 37 d is inserted into a guide slit 31 d provided on the support plate 31. The guide slit 31d is provided in an arc shape centered on the rotation center Asw of the switching member 37, and the protrusion 37d can move along the guide slit 31d. The movement range of the protrusion 37d, and thus the movement range of the switching member 37, is limited by the edges on both sides in the longitudinal direction (circumferential direction) of the guide slit 31d. As shown in FIG. 6, a wide portion 31f of the guide slit 31d is provided at a position different from the initial position shown in FIG. 6 of the protrusion 37d between both ends of the guide slit 31d. The diameter of the head portion of the protrusion 37d is larger than the width of the general portion of the guide slit 31d and smaller than the width (diameter) of the wide portion 31f. Therefore, the head portion of the protrusion 37d can be inserted into the guide slit 31d from the wide portion 31f.

(Operation of switching mechanism 30)
FIG. 9 is a side view of the switching mechanism 30 as viewed from the inside in the vehicle width direction, and is a diagram illustrating a state of the switching mechanism 30 when the walk-in lever 16 is operated. 10 is a side view of the switching mechanism 30 viewed from the inside in the vehicle width direction, and is a view in the same state as FIG. 7, and FIG. 11 is a side view of the switching mechanism 30 viewed from the inside in the vehicle width direction. The seat back 12 is a view showing a state in which the seat back 12 is largely inclined forward. FIG. 12 is a side view showing the operation of the follower arm 37a, the protrusion 35a, and the protrusion 37d as seen from the outside in the vehicle width direction.

(Unlocking the reclining lock mechanism 20 according to the operation of the walk-in lever 16)
When the occupant operates the walk-in lever 16, as shown in FIG. 8, the core wire 36a slides with respect to the cover 36b, and the operating lever 33 is released around the rotation center As through the connection point Pww. Rotate in (direction Cw1). Thereby, the reclining lock mechanism 20 is switched from the reclining lock state to the reclining unlock state.

(Unlocking the slide lock mechanism according to the operation of the walk-in lever 16 and maintaining the forward tilt of the seat back 12)
When the reclining lock mechanism 20 is switched from the reclining lock state to the reclining unlocking state in accordance with the operation of the walk-in lever 16, the seat back 12 is biased forward by the spiral spring 18, so that the pressing member 24 The contact arm 24a rotates in the direction Cw1. The direction Cw1 is an example of a first direction.

  Here, as shown in FIG. 6, in a state where the switching member 37 is positioned at the initial position, the protrusion 37 d is positioned on the movement path Pt of the contact arm 24 a of the pressing member 24.

  Therefore, as shown in FIG. 9, the protrusion 37d and the switching member 37 pushed by the contact arm 24a rotating in the direction Cw1 rotate in the direction Ccw2 around the rotation center Asw.

  When the switching member 37 rotates in the direction Ccw2, the operation arm 37b included in the switching member 37 rotates in the direction Ccw2, and the core wire 39a of the slide release wire 39 is pulled. Thereby, the slide lock mechanism is switched from the slide lock state to the slide unlock state.

  Here, the rotation range of the switching member 37 is limited by the guide slit 31d. Therefore, the switching member 37 stops at the position shown in FIG. 9 where the projection 37d abuts the edge in the direction Ccw2 of the guide slit 31d (the right edge in FIG. 9). The abutting arm 24a of the pressing member 24 urged in the direction Cw1 by the spiral spring 18 also stops at the position shown in FIG. 9 along with the stop of the projection 37d, and the pressing member 24 and consequently the seat back 12 is tilted forward. Maintained at.

(Unlocking the reclining lock mechanism 20 according to the operation of the reclining release lever 15)
As shown in FIG. 7, when the occupant pulls up the operation portion 15a of the reclining release lever 15 to the upper side of the vehicle, that is, when the occupant operates the reclining release lever 15, the reclining release lever 15 moves in the direction Ccw4 around the rotation center Are. And the link member 35 is moved in the direction D3 from the initial position. As a result, the operation lever 33 connected to the link member 35 at the connection point Pl rotates in the release direction (direction Cw1) around the rotation center Ase, and the reclining lock mechanism 20 changes from the reclining lock state to the reclining unlock state. Switch to

(Operation of the seat back 12 according to the operation of the reclining release lever 15)
The follower arm 37a of the switching member 37 follows the protrusion 35a of the link member 35 by being biased in the direction Cw2 by the torsion spring 38. That is, when the link member 35 is moved in the direction D3 as shown in FIG. 7 from the initial position shown in FIG. 5 by the operation of the reclining release lever 15, the switching member 37 follows the protrusion 35a of the link member 35. And rotate in the direction Cw2 around the rotation center Asw. As a result, the protrusion 37d deviates from the movement path Pt of the contact arm 24a as shown in FIG.

  Therefore, when the reclining lock mechanism 20 is switched from the reclining locked state to the reclining unlocked state by the operation of the reclining release lever 15, as shown in FIG. Even if it rotates around, it does not contact the projection 37d. Therefore, as shown in FIG. 2, the seatback 12 can move between the forward tilt position Pif and the rear tilt position Pib, that is, in the entire range of the rotatable range.

(Contact and separation between the follower arm 37a of the switching member 37 and the projection 35a of the link member 35)
The movable range of the switching member 37 is determined by the guide slit 31d. As shown in FIG. 12, the follower arm 37a includes an initial position P0 (FIG. 5), a first position P1 that is separated from the initial position P0 in the direction Ccw2, and a second position that is separated from the initial position P0 in the direction Cw2. It can move between position P2 (FIG. 7).

  The follower arm 37a is elastically pressed against the protrusion 35a by the urging force of the torsion spring 38 between the initial position P0 and the second position P2, and moves following the protrusion 35a. Therefore, as described above, when the link member 35 is moved from the initial position shown in FIG. 5 in the direction D3 as shown in FIG. 7 by the operation of the reclining release lever 15, the switching member 37 is moved to the link member 35. Is rotated in the direction Cw2 around the rotation center Asw. As a result, the protrusion 37d deviates from the movement path Pt of the contact arm 24a as shown in FIG.

  The follower arm 37a is separated from the protrusion 35a between the initial position P0 and the first position P1. Therefore, as described above, as shown in FIG. 9, the projection 37d of the switching member 37 is pushed by the contact arm 24a of the pressing member 24 that rotates in the direction Cw1, and the switching member 37 is rotated around the rotation center Asw. When rotated to Ccw2, as shown in FIG. 12, the follower arm 37a is separated from the protrusion 35a.

  As shown in FIG. 12, the protrusion 35a is separated from the follower arm 37a positioned at the second position P2 in the direction D3 as the link member 35 moves in the direction D3.

  As described above, the follower arm 37a and the protrusion 35a can be separated from each other, and move while contacting each other only in a specific range of the movement section. If the follower arm 37a and the protrusion 35a, that is, the switching member 37 and the link member 35 are configured so as not to be separated, the movable range of the reclining release lever 15 and the link member 35 and the movable range of the switching member 37 are compatible. A coupling mechanism having a complicated configuration or movement between the switching member 37 and the link member 35, or the movement range of the switching member 37 and the movable range of the pressing member 24 are difficult to be compatible. It may be necessary. In this regard, according to the present embodiment, the movable range of the reclining release lever 15 and the link member 35 and the movable range of the switching member 37 are relatively simple, including the torsion spring 38, the follower arm 37a, and the protrusion 35a. Can be easily set in a more suitable range.

  Also, if the follower arm 37a follows the projection 35a of the link member 35 moving in the direction D3 beyond the second position P2, the movement range of the operation arm 37b of the switching member 37 is expanded, for example, slide release There is a concern that the slack (bending due to buckling) of the wire 39 may increase. In this respect, in this embodiment, since the follower arm 37a can be separated from the protrusion 35a, an adverse event due to the looseness of the slide release wire 39, for example, interference with other parts of the slide release wire 39, or a large looseness It is possible to avoid a decrease in reliability of the slide release wire 39 due to repetition of the above.

  As described above, in this embodiment, the torsion spring 38 (biasing member) is the link member 35 in which the follower arm 37a (second pressing portion) of the switching member 37 moves in the direction D3 (third direction). The switching member 37 is urged so as to follow the projection 35a (second contact portion). Therefore, according to the present embodiment, the switching member 37 and the link member 35 are mechanically connected to each other so that the switching member 37 is interlocked with the link member 35, for example, the switching member 37 is pulled by the link member 35. As a result, the configuration of the portion where the switching member 37 and the link member 35 are connected, and hence the configuration of the switching mechanism 30 (lock release device), are easier to simplify than the configuration that moves in the direction Cw2.

  In the present embodiment, the follower arm 37a is separated from the protrusion 35a between the initial position P0 and the first position P1, and is in contact with the protrusion 35a between the initial position P0 and the second position P2. That is, in the present embodiment, when the projection 37d (first contact portion) is pushed by the pressing member 24 and the switching member 37 moves in the direction Ccw2 (second direction), the follower arm 37a is moved from the projection 35a. Can be separated. Therefore, according to the present embodiment, for example, the configuration of the switching mechanism 30 is easily simplified as compared with the configuration in which the follower arm 37a and the protrusion 35a are mechanically coupled.

  In the present embodiment, the follower arm 37a is in contact with the protrusion 35a between the initial position P0 and the second position P2, and the protrusion 35a is linked to the link arm 37a located at the second position P2. As the member 35 moves in the direction D3 (third direction), the member 35 moves away in the direction D3. Therefore, according to the present embodiment, for example, the configuration of the switching mechanism 30 is easily simplified as compared with the configuration in which the follower arm 37a and the protrusion 35a are mechanically coupled. Further, excessive slack of the slide release wire 39 can be prevented.

  In the present embodiment, the protrusion 37d, the follower arm 37a, and the connection point Pws are each an arc-shaped movement path centered on the rotation center Asw (first rotation center) and around the rotation center Asw. Rotate together. Therefore, according to the present embodiment, for example, the switching member 37 can be configured relatively simply. Further, the protrusion 37d, the follower arm 37a, and the connection point Pws do not move in a complicated manner and can move relatively smoothly.

  In the present embodiment, the connection point Pww in the operation lever 33 (release member), that is, the first connection point that receives a force based on the operation of the walk-in lever 16 (first operation member) is connected to the operation lever 33. It is located farther from the rotation center Ase (second rotation center) than the point Pl, that is, the second connection location that receives a force based on the operation of the reclining release lever 15 (second operation member). Therefore, according to the present embodiment, for example, the walk-in lever 16 can be operated with an operation force smaller than the operation force for operating the reclining lever 15. For this reason, for example, even when the walk-in lever 16 is relatively small and the moment arm of the operation force is difficult to be set long, the occupant can operate the walk-in lever 16 with a relatively small operation force. is there.

  As mentioned above, although embodiment of this invention was illustrated, the said embodiment is an example and is not intending limiting the range of invention. The present invention can be implemented in various other forms, and various omissions, replacements, combinations, and changes can be made without departing from the spirit of the invention. These various forms and modified forms are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof. In addition, specifications (structure, type, direction, shape, size, length, width, thickness, height, number, arrangement, position, material, etc.) of each configuration and shape, etc. are changed as appropriate. can do.

  For example, the urging member is not limited to a torsion spring, and may be a spring or an elastic member in another form. Further, the switching member may be slidably guided to the support plate. Further, the one-way connecting portion may have a configuration including a guide rail provided on the release member and a slider provided on the transmission member and moving along the guide rail. Further, the one-way connection portion is not limited to a configuration having a long hole and a pin. The first direction, the second direction, and the third direction indicate the directions in which each member moves, and are not related to each direction.

  DESCRIPTION OF SYMBOLS 10 ... Seat, 12 ... Seat back, 15 ... Reclining release lever (second operation member), 16 ... Walk-in lever (first operation member), 20 ... Reclining lock mechanism, 24 ... Pressing member, 24a ... Contact Arm (first pressing portion), 30 ... switching mechanism (lock release device), 33 ... operation lever (release member), 35 ... link member (transmission member), 35a ... projection (second contact portion), 37 ... switching member, 37a ... following arm (second pressing part), 37d ... projection (first contact part), 38 ... torsion spring (biasing member), 39a ... core wire (movable member), 40 ... one direction Connection part, Ase ... rotation center (second rotation center), Asw ... rotation center (first rotation center), Ccw2 ... direction (second direction), Cw1 ... direction (first direction) , Cw2 ... direction (second direction (Opposite direction), D3 ... direction (third direction), P0 ... initial position, P1 ... first position, P2 ... second position, Pl ... connection point (second connection point), Pws ... connection point ( Connection part), Pww ... connection point (first connection point).

Claims (4)

A reclining lock mechanism for switching between a reclining lock state and an unlocking state of the seat back;
A release member that switches the reclining lock mechanism from a locked state to an unlocked state by moving in a first direction according to an operation of the first operating member;
A pressing member fixed to the seat back and having a first pressing portion;
A first contact portion that can contact the first pressing portion, a second pressing portion, and a connecting portion to which a movable member that switches the slide lock mechanism of the seat from the locked state to the unlocked state is connected; The switching member moves in a second direction when the first abutting portion is pressed by the first pressing portion interlocked with the seatback that is tilted forward, and the connection When the movable member connected to the part moves, the slide lock mechanism switches from the locked state to the unlocked state, and the switching member moves in a direction opposite to the second direction, whereby the first contact part is The switching member deviating from the movement path of the first pressing portion; and
A second abutting portion provided between the second operating member and the release member and capable of abutting on the second pressing portion; A transmission member that moves in the direction of
The movement of the transmission member in the third direction according to the operation of the second operation member is transmitted to the release member to move the release member in the first direction, and the operation of the first operation member The movement of the release member in response to the first direction is not transmitted to the transmission member, and the transmission member and the release member are connected so that the transmission member is not moved in the third direction. A directional connection;
An urging member that urges the switching member in a direction opposite to the second direction so that the second pressing portion follows the second abutting portion of the transmission member that moves in the third direction; ,
A vehicle seat unlocking device comprising: The second pressing portion moves between a first position separated from the initial position in the second direction and a second position separated from the initial position in a direction opposite to the second direction. Is possible,
The second pressing portion is in contact with the second contact portion at the initial position, and is separated from the second contact portion between the initial position and the first position, and the initial position is 2. The vehicle seat unlocking device according to claim 1, wherein the vehicle seat is in contact with the second contact portion between the first position and the second position.   The said 2nd contact part is spaced apart from the said 2nd press part located in the said 2nd position with the movement to the said 3rd direction of the said transmission member. An unlocking device for a vehicle seat. The release member is provided to be rotatable around a second rotation center,
The first connection location that receives the force based on the operation of the first operation member in the release member is more than the second connection location that receives the force based on the operation of the second operation member in the release member. The unlocking device for a vehicle seat according to any one of claims 1 to 3, which is located far from the second rotation center.

Images