JP6318611B2 - Vehicle seat device - Google Patents

Description

  The present invention relates to a vehicle seat device including a walk-in mechanism and a fall-down mechanism.

  2. Description of the Related Art Conventionally, as a technique related to a vehicle seat device including a walk-in mechanism and a fall-down mechanism, a seat arrangement device disclosed in Patent Document 1 is known. This seat arrangement device includes a walk-in mechanism and a fall-down mechanism, a switch-in operation mechanism between the walk-in mechanism and the fall-down mechanism, and a rear side so that a rear occupant can operate two modes of walk-in and fall-down. The actuators for unlocking the reclining lock and the switching operation mechanism operated by the occupant are concentrated and arranged on the plate surface of the cushion bracket to which the seat cushion is assembled.

JP 2010-083343 A

  By the way, the walk-in mechanism and the fall-down mechanism need to control the sliding state of the seat cushion and the tilted state of the seat back in conjunction with each other. For this reason, it is difficult to simplify both mechanisms due to an increase in the number of necessary parts, and this becomes an impediment to downsizing the vehicle seat device.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a vehicle seat device that can simplify the configuration of the walk-in mechanism and the fall-down mechanism.

In order to achieve the above object, in the invention according to claim 1, the seat cushion (12) slidably attached to the vehicle body, and a predetermined tilt axis with respect to the seat cushion. A seat back (13) attached to be tiltable, a reclining mechanism for controlling the tilt of the seat back with respect to the seat cushion and a tilt angle thereof, and provided at a shoulder opening of the seat back, the reclining mechanism A shoulder lever that is operated when the restriction of the tilt of the seat back relative to the seat cushion is released, a slide lock mechanism (50, 53) that can restrict the sliding of the seat cushion, and a forward tilting posture with respect to the seat cushion. While restricting the tilting of the tilted seat back, the Releasing the walk-in mechanism, when further tilting before Symbol stoop without returning the seat back to the state before tilting the tilting restriction of the seat back by the walk-in mechanism for releasing the restriction by Ride locking mechanism And a fall-down mechanism that places the slide lock mechanism in a restricted state. The vehicle seat device (10) includes a contact portion (22) and a pressing portion (23, 24). The seat back is brought into the forward tilted posture by abutting the pivot member (20) that pivots about the predetermined tilt axis (17) according to the tilt of the seat back and the abutting portion. A stopper (31) for restricting the rotation of the rotating member in the forward tilt direction so as to be maintained, and the stopper is pressed by the pressing portion when the stopper contacts the contact portion. And a restriction release means (35, 54) for releasing the slide restriction by the slide lock mechanism, and the fall-down mechanism makes contact between the stopper and the contact portion by moving the stopper. Operation means (37, 42) operated when releasing the state and releasing the rotation restriction of the rotation member, the restriction release means responding to the release of the rotation restriction by the operation of the operation means. The rotating member is further rotated in the forward tilt direction so that the pressing state by the pressing portion is released and the slide lock mechanism is in a restricted state, and the operating means is supported to be tiltable. The stopper that contacts in the first tilted state is brought into contact with the contact portion, the lever that releases the contact state in the second tilted state, and the lever toward the first tilted state. Energize A side member of the seat cushion so as to include a biasing member, and a tension member that is pulled when the lever is tilted toward the second tilted state against the biasing by the biasing member. The restriction releasing means is linked so as to be able to contact at one side edge with the pressing portion of the rotating member that is supported by a predetermined pin so as to be tiltable and rotates in a forward tilt direction. A link that is urged by a spring member, and a slide cable having one end fixed to the link, wherein the one side edge of the link is pressed while the contact portion is in contact with the stopper. By being pushed down by the part, the pressure part is tilted in one direction, and the pressing part is pushed down when the contact between the contact part and the stopper is released and the turning member is further turned forward. Over the one side edge When the link is tilted in one direction, the slide cable is tilted in the one direction by the biasing of the link spring member. the tensile force for releasing the slide restriction granted for a mechanism, the link is characterized Rukoto configured to release the tension when tilted to the other direction.
In addition, the code | symbol in each said parenthesis shows the correspondence with the specific means as described in embodiment mentioned later.

  According to the first aspect of the present invention, the seat back is maintained in the forward inclined posture by the contact portion of the rotating member coming into contact with the stopper. In this state, the slide lock mechanism is used by the restriction release means of the pressing state by the pressing portion. Slide restriction is released. Accordingly, the vehicle seat device is in a walk-in state in which the seat cushion can slide while the seat back is in the forward leaning posture. Further, by moving the stopper according to the operation of the operating means, the contact state between the stopper and the contact portion is released, and the rotation restriction of the rotation member is released. In this state, the rotation member is moved forward. By further rotating in the tilt direction, the pressing state of the restriction release means by the pressing portion is released, and the slide lock mechanism is in the restricted state. Accordingly, the vehicle seat device is in a fall-down state in which the seat cushion slide is restricted in a state where the seat back is further tilted forward from the forward tilt posture.

  By configuring the walk-in mechanism and the fall-down mechanism in this way, the number of parts for configuring both the mechanisms is reduced, so a vehicle seat device that simplifies the configuration of the walk-in mechanism and the fall-down mechanism is provided. Can be realized.

In particular , the operating means includes a lever that contacts the contact portion in the first tilted state and releases the contacted state in the second tilted state, and the lever is biased toward the first tilted state. And a tension member that is tensioned when the lever is tilted toward the second tilted state against the bias by the biasing member.

  Thereby, when the seat back is further tilted from the forward tilt posture, the lever is tilted to the second tilted state by pulling the tension member, so that the contact between the stopper and the contact portion is released. Transition from the walk-in state to the fall-down state can be easily performed.

It is a front view of the vehicular seat device concerning this embodiment. It is a side view of the vehicle seat apparatus of FIG. It is a top view of the vehicle seat apparatus of FIG. FIG. 4A is a front view showing the vehicle seat device in the walk-in state, and FIG. 4B is a front view showing the vehicle seat device in the fall-down state. It is a front view which expands and shows the circumference | surroundings of the other inclination axis | shaft. It is explanatory drawing explaining the positional relationship of the lower end part of a seat back frame, and the components assembled | attached to this lower end part. It is explanatory drawing explaining the positional relationship of the upper end part of a seat cushion frame, and the components assembled | attached to this upper end part. FIG. 8A is a cross-sectional view showing the slide rail member in the locked state, and FIG. 8B is a cross-sectional view showing the slide rail member in the unlocked state. It is explanatory drawing explaining the state which the 1st piece part of the rotation member contact | abutted to the stopper. It is explanatory drawing explaining the tilting state of a stopper when a lever tilts to a 2nd tilting state. It is explanatory drawing explaining the state immediately after the pin of a rotation member got over a link. It is explanatory drawing explaining the state which the stopper contacted the outer edge of the 1st piece part of a rotation member.

  Hereinafter, an embodiment of a vehicle seat device according to the present invention will be described with reference to the drawings. FIG. 1 is a front view of a vehicle seat device 10 according to the present embodiment. FIG. 2 is a side view of the vehicle seat device 10 of FIG. FIG. 3 is a plan view of the vehicle seat device 10 of FIG. FIG. 4A is a front view showing the vehicle seat device 10 in the walk-in state, and FIG. 4B is a front view showing the vehicle seat device 10 in the fall-down state. In FIG. 1 to FIG. 4, illustration of a seat cushion and a seat back is omitted for convenience.

  A vehicle seat device 10 shown in FIGS. 1 to 3 supports a vehicle seat 11 in which a seat back is tiltably supported with respect to a seat cushion, and supports the vehicle seat 11 slidably with respect to a vehicle body. And a slide rail member 50 having a slide lock mechanism capable of regulating the slide. The vehicle seat device 10 is configured to be switchable between a state in which the tilt angle of the seat back relative to the seat cushion can be adjusted (hereinafter also referred to as a seated state), a walk-in state, and a fall-down state.

  Here, in the walk-in state, as shown in FIG. 4A, further forward leaning of the seat back tilted to a predetermined forward leaning posture (for example, a posture leaning forward by 54 ° from the sitting state) is restricted. At the same time, the restriction by the slide lock mechanism is released. Further, as shown in FIG. 4B, the fall-down state is the forward tilt when the seat back is further tilted forward from the forward tilted posture (for example, 51 ° forward tilted from the forward tilted posture). This is a state where the restriction is released and the slide lock mechanism is restricted.

Next, the configuration of the vehicle seat 11 will be described below.
In addition to the seat cushion and the seat back, the vehicle seat 11 is attached to the seat cushion frame 12 that fixes the seat cushion to the slide rail member 50 and the rear portion of the seat cushion frame 12 so as to be tiltable. The seat back frame 13 is supported to be tiltable with respect to the cushion.

  The seat back frame 13 can be tilted with respect to the seat cushion frame 12 by tilting shafts that respectively engage with the through holes of the lower end portions 13 a being pivotally supported by the through holes of the upper end portion 12 a of the seat cushion frame 12. It is supported by.

  One tilting shaft is provided with a known reclining device 14 for regulating the tilting of the seatback frame 13 relative to the seat cushion frame 12 and controlling the tilting angle thereof. A cable 16 from a shoulder lever 15 provided at the shoulder of the seat back frame 13 is connected to the reclining device 14. The reclining device 14 is configured to release the tilt restriction of the seat back frame 13 with respect to the seat cushion frame 12 in accordance with the cable 16 that is pulled in response to the lifting operation of the shoulder lever 15.

  Next, the configuration around the other tilting axis (hereinafter also simply referred to as the tilting axis 17) will be described in detail with reference to FIGS. FIG. 5 is an enlarged front view showing the periphery of the tilting shaft 17. FIG. 6 is an explanatory diagram illustrating the positional relationship between the lower end portion 13a of the seat back frame 13 and the components assembled to the lower end portion 13a. FIG. 7 is an explanatory diagram for explaining the positional relationship between the upper end portion 12a of the seat cushion frame 12 and the components assembled to the upper end portion 12a. In FIG. 5 and the like, for convenience, the pins 24 and 34 are hatched. Moreover, in FIG. 7, the components assembled | attached to the other side of the seat cushion frame 12 and the upper end part 12a are illustrated with a dashed-two dotted line for convenience.

  As shown in FIG. 5 and FIG. 6, the rotating member is interposed on one side of the lower end portion 13 a (the side facing the upper end portion 12 a) with which the tilting shaft 17 is engaged so as to be interposed between the upper end portion 12 a. 20 is assembled. The rotation member 20 is configured to rotate around the tilt shaft 17 (in the forward tilt direction) in accordance with the tilt (forward tilt) of the seat back frame 13. The tilt axis 17 can correspond to an example of a “predetermined tilt axis”.

  The rotating member 20 includes a substantially circular base portion 21 fixed to the lower end portion 13a, and a first piece portion 22 and a second piece portion 23 connected to the outer edge of the base portion 21. When the seat back frame 13 is tilted forward to the forward leaning posture, the first piece portion 22 is brought into contact with a stopper 31 (to be described later) at the contact edge 22a, so that the rotating member 20 is moved in the forward tilt direction. The rotation is restricted, that is, the forward tilt of the seat back frame 13 is restricted. Further, the outer edge 22b of the first piece portion 22 has an arc shape centering on the tilting shaft 17, and is formed so that the stopper 31 in the fall-down state contacts. The first piece portion 22 may correspond to an example of a “contact portion”.

  The second piece 23 is connected to the outer edge of the base 21 through a step so as to be positioned on the lower end 13 a side with respect to the first piece 22. A substantially cylindrical pin 24 is provided at the distal end portion of the second piece portion 23, and the pin 24 is set so that its height does not reach a plane including the first piece portion 22. . The pin 24 is arranged so that a state in which a link 35 described later is pushed down is maintained when the first piece 22 contacts the stopper 31 at the contact edge 22a. The second piece 23 and the pin 24 may correspond to an example of a “pressing part”.

  As shown in FIGS. 5 and 7, the seat cushion frame 12 that pivotally supports the tilting shaft 17 is interposed on one side (the side facing the lower end portion 13 a) between the lower end portion 13 a and the upper end portion 12 a. Further, the stopper 31 is supported so as to be tiltable about the pin 32. The stopper 31 is biased by a stopper spring member (not shown) so as to be located at a position shown in FIGS. 5 and 7 (hereinafter also referred to as a locking position). The stopper 31 is disposed so as to come into contact with the contact edge 22a of the first piece 22 of the rotating member 20 that rotates at the locking position.

  Further, a guide hole 12b corresponding to an arc centered on the pin 32 is formed in the upper end portion 12a, and a pin 34 guided to the guide hole 12b is fixed to the stopper 31 at one end thereof. The guide hole 12b is located when the stopper 31 is positioned at the locking position when one end of the pin 34 is guided to the upper edge side (see FIG. 7), and when one end of the pin 34 is guided to the lower edge side thereof. The stopper 31 and the contact edge 22a of the first piece 22 are formed so as to be released.

  Further, the link 35 is supported by the pin 32 so as to be tiltable. The link 35 is positioned such that one side edge 35a and the other side edge 35b can contact the pin 24 of the rotating member 20 that rotates (hereinafter, also referred to as a link reference position: see FIG. 7). It is biased by a link spring member (not shown). Therefore, the pin 35 of the rotating member 20 that rotates in the direction different from the tilting direction of the link 35 when the one side edge 35a is pushed down by the pin 24 of the rotating member 20 that rotates in the forward tilting direction. 24, the tilting direction of the link 35 when the other side edge 35b is pushed down is different. In particular, when the first piece 22 abuts against the stopper 31 at the abutment edge 22a, the link 35 is tilted to the slide restriction release position by pressing with the pin 24 at the one side edge 35a (see FIG. 9).

  One end of a slide cable 41 is fixed to the link 35. The slide cable 41 is a cable that can control the lock state of the slide rail member 50 by the slide lock mechanism. The slide cable 41 functions to apply a tensile force for switching the slide rail member 50 to the unlocked state when the link 35 tilts to the slide restriction release position. The link 35 may correspond to an example of “regulation release unit”.

  Further, on the other side of the upper end portion 12a, a lever 37 is supported so as to be tiltable about a pin 38, and this lever 37 is in a state shown in FIGS. 5 and 7 by a lever spring member (not shown). Hereinafter, it is biased so as to tilt (also referred to as a first tilt state). The lever 37 is provided with a guide hole 37a through which the other end of the pin 34 is guided. For this reason, the tilt angle of the lever 37 around the pin 38 changes according to the position of the other end of the pin 34 guided by the guide hole 37a. In the guide hole 37a, the other end of the pin 34 guided to the upper edge side of the guide hole 12b at one end is guided to the upper edge side (see FIG. 5) and guided to the lower edge side of the guide hole 12b at one end. The other end of the pin 34 is formed to be guided to the lower edge side.

  One end of the strap 42 is fixed to the distal end portion 37 b of the lever 37. The strap 42 is a tension member that is pulled by an occupant or the like when the forward tilt restriction of the seat back frame 13 is released by tilting the stopper 31 from the locking position. As shown in FIGS. 1 to 3, the other end of the strap 42 is pulled out to the side portion of the seat cushion frame 12. The lever 37, the lever spring member, and the strap 42 may correspond to an example of “operation means”. The lever spring member may correspond to an example of an “urging member”, and the strap 42 may correspond to an example of a “tensile member”.

  Thus, when the strap 42 is not pulled, the other end of the pin 34 is guided to the upper edge side of the guide hole 37a of the lever 37 biased by the lever spring member, and one end of the pin 34 is connected to the guide hole 12b. Guided to the upper edge. In this case, the stopper 31 is positioned at the locking position.

  On the other hand, when the other end of the strap 42 is pulled, the other end of the pin 34 is guided to the lower edge side of the guide hole 37a of the lever 37 tilted against the urging force of the lever spring member. It is guided to the lower edge side of the guide hole 12b. In this case, the stopper 31 is rotated to a position where it does not come into contact with the contact edge 22a of the first piece 22.

Next, the configuration of the slide rail member 50 will be described with reference to FIG. 8A is a cross-sectional view showing the slide rail member 50 in a locked state, and FIG. 8B is a cross-sectional view showing the slide rail member 50 in an unlocked state.
As shown in FIGS. 8A and 8B, the slide rail member 50 includes a lower rail 51 fixed to the vehicle body, an upper rail 52 fixed to the vehicle seat 11, a lower rail 51, and an upper rail 52. A lock member 53 that locks (fixes) the lock member 53 so that it cannot move relative to the desired slide position, and an operation lever that switches between the lock state and the unlock state of the lock member 53 are provided.

  The lower rail 51 and the upper rail 52 can slide smoothly in the front-rear direction by interposing a steel ball or the like held by the retainer between both members.

  The lock member 53 is tiltably supported by the upper rail 52, and a plurality of engaging portions 53 a that can be engaged with any of the plurality of tooth portions 51 a formed on the lower rail 51 are formed at the distal end portion thereof. Has been. The lock member 53 is in a tilted state in which the engaging portion 53a engages with the corresponding tooth portion 51a of the lower rail 51 by an unillustrated urging member (hereinafter also referred to as a lock tilted state: see FIG. 8A). It is so energized.

  For this reason, the lock member 53 in the lock tilt state functions as a slide lock mechanism that restricts the slide of the upper rail 52 with respect to the lower rail 51. On the other hand, when the lock member 53 tilts in the unlocking direction according to the operation by the operation lever, the engagement between the engaging portion 53a and the tooth portion 51a is released, and the slide restriction of the upper rail 52 with respect to the lower rail 51 is released. .

  The upper rail 52 is rotatably supported by a pressing piece 54 that can be pressed so as to tilt the lock member 53 in the unlocking direction as a mechanism for slide lock control different from the operation lever. The pressing piece 54 is urged by a spring member 55 in a direction away from the lock member 53 (clockwise in FIG. 8), and the other end of the slide cable 41 is subjected to a tensile force from a direction against the urging direction. Is fixed.

  For this reason, as shown in FIG. 8B, in a state where the tensile force is received from the slide cable 41, the direction in which the pressing piece 54 presses the lock member 53 against the spring member 55 (hereinafter referred to as the pressing rotation direction). As a result, the engagement between the engaging portion 53a and the tooth portion 51a is released, and the slide restriction is released. On the other hand, when the tensile force disappears, as shown in FIG. 8A, the locking member 53 is rotated in the counter-pressing rotation direction by the urging force of the spring member 55. As a result, the engaging portion 53a and the tooth portion are rotated. 51a engages and the sliding of the upper rail 52 with respect to the lower rail 51 is regulated. The pressing piece 54 may correspond to an example of “regulation release means”.

  Next, a walk-in state, a fall-down state, and the like of the vehicle seat device 10 configured as described above will be described with reference to the drawings. FIG. 9 is an explanatory diagram for explaining a state where the first piece 22 of the rotating member 20 is in contact with the stopper 31. FIG. 10 is an explanatory diagram illustrating the tilted state of the stopper 31 when the lever 37 is tilted to the second tilted state. FIG. 11 is an explanatory diagram for explaining a state immediately after the pin 24 of the rotating member 20 gets over the link 35. FIG. 12 is an explanatory diagram for explaining a state in which the stopper 31 is in contact with the outer edge 22b of the first piece 22 of the rotating member 20. 9-12, the components assembled on the other side of the seat cushion frame 12 and the upper end portion 12a are indicated by two-dot chain lines for convenience.

First, a case where the seated state shown in FIG. 1 is shifted to the walk-in state shown in FIG. 4 (A) will be described.
By pulling up the shoulder lever 15, the tilting restriction of the seat back frame 13 by the reclining device 14 is released. When the seat back is tilted forward in this state, as shown in FIG. 9, the seat back is tilted forward in a forward tilt posture in which the first piece 22 of the rotating member 20 contacts the stopper 31 at the contact edge 22a. Be regulated.

  When the forward tilt is restricted, the link 35 is tilted so as to be pushed down to the slide restriction release position by the pin 24 of the rotating member 20. Therefore, when the slide cable 41 is pulled, as shown in FIG. 8B, the pressing piece 54 rotates in the pressing rotation direction, and the engaging portion 53a of the lock member 53 and the tooth portion of the lower rail 51 The engagement with 51a is released.

  As a result, the slide restriction of the upper rail 52 with respect to the lower rail 51 is released, and the transition to the walk-in state in which the vehicle seat 11 can be slid while the seat back is tilted forward is completed.

  Thus, the rotation member 20 which has the 1st piece part 22 and the 2nd piece part 23 in which the pin 24 is formed, and rotates around the inclination axis | shaft 17 according to inclination of a seat back, 1st piece The stopper 31 that restricts the rotation of the rotating member 20 in the forward tilt direction so that the seat back is maintained in the forward tilted posture by contacting the contact edge 22a of the portion 22, and the stopper 31 includes the contact edge 22a. The walk-in mechanism can be configured to include a link 35 that releases the slide restriction by the lock member 53 by being pressed by the pin 24 when abutting on the link.

Next, a case will be described in which the walk-in state illustrated in FIG. 4A shifts to the fall-down state illustrated in FIG.
When the other end of the strap 42 is pulled in the walk-in state, the lever 37 in the first tilted state tilts to the state shown in FIG. 10 (hereinafter also referred to as the second tilted state), and the lever 37 in the second tilted state. The other end of the pin 34 is guided to the lower edge side of the guide hole 37a. Therefore, one end of the pin 34 is guided to the lower edge side of the guide hole 12b, so that the stopper 31 tilts from the locking position, and the contact between the stopper 31 and the contact edge 22a of the first piece 22 is released. Is done. Thereby, the rotation restriction of the rotation member 20 by the stopper 31 is released, and the seat back can be inclined forward to the forward inclination state shown in FIG.

  When the forward tilt restriction is released, the pin 24 of the rotating member 20 gets over the link 35, so that the link 35 tilts in response to the biasing force by the link spring member as shown in FIG. The state is released. For this reason, as shown in FIG. 8A, the pressing piece 54 rotates according to the biasing force of the spring member 55, and the engaging portion 53a of the lock member 53 and the tooth portion 51a of the lower rail 51 are engaged. .

  Thereby, the slide of the upper rail 52 with respect to the lower rail 51 is regulated, and the transition to the fall-down state in which the seat back can further tilt forward from the forward tilt posture is completed.

  In this way, the strap 42 and the lever 37 that are operated when the stopper 31 is tilted to release the contact between the stopper 31 and the contact edge 22a and the rotation restriction of the rotation member 20 is released. And the link 35 is further controlled in the forward tilt direction according to the release of the rotation restriction by the pulling operation of the strap 42, so that the pressing state by the pin 24 is released and the lock member 53 is restricted. The fall-down mechanism can be configured by forming as described above.

  Even if the tension state of the strap 42 is released after the contact between the stopper 31 and the contact edge 22a of the first piece portion 22 is released and the turning member 20 is turned in the forward tilt direction, FIG. As shown, when the stopper 31 contacts the outer edge 22b of the first piece 22, the forward tilt restriction release state is maintained.

Next, the case where the fall-down state shown in FIG. 4B shifts to the seating state shown in FIG. 1 will be described.
When the seat back is caused to tilt backward, the rotating member 20 rotates in the backward tilting direction as the seat back frame 13 tilts backward. At this time, the stopper 31 is in sliding contact with the outer edge 22b of the first piece 22 and the other end of the pin 34 is guided to the lower edge side of the guide hole 37a, so that the lever 37 is maintained in the second tilted state. The When the stopper 31 gets over the outer edge 22b, the stopper 31 tilts toward the locking position, and the other end of the pin 34 is guided to the upper edge side of the guide hole 37a. As a result, the lever 37 tilts toward the first tilted state.

  Further, when the seat back is caused, the pin 24 of the rotating member 20 that rotates in the backward tilting direction comes into contact with the other side edge 35b of the link 35 located at the link reference position. When the rotation member 20 further rotates in the backward tilting direction from this state, the link 35 tilts so that the other side edge 35b is pushed down by the pin 24. In the tilting direction of the link 35, the slide cable 41 is not pulled, so that the slide rail member 50 is not unlocked.

  Then, the rotation member 20 is further rotated so that the pin 24 gets over the link 35, whereby the transition to the seating state in which the tilt angle of the seat back relative to the seat cushion by the reclining device 14 can be adjusted is completed.

  As described above, in the vehicle seat device 10 according to the present embodiment, the seat back is maintained in the forward inclined posture by the first piece portion 22 of the rotating member 20 contacting the stopper 31 at the contact edge 22a. In this state, the link 35 is pushed down to the slide restriction release position by the pin 24 of the rotating member 20, and the slide restriction by the lock member 53 is released. As a result, the vehicle seat device 10 enters a walk-in state in which the seat cushion can slide while the seat back is tilted forward. Further, by moving the stopper 31 according to the pulling operation of the strap 42, the contact state between the stopper 31 and the contact edge 22a of the first piece 22 is released, and the rotation restriction of the rotation member 20 is released. In this state, when the rotation member 20 further rotates in the forward tilt direction, the pressing state of the link 35 by the pin 24 is released, and the lock member 53 enters the restricted state. As a result, the vehicle seat device 10 enters a fall-down state in which the seat cushion slide is restricted in a state where the seat back is further tilted forward from the forward tilt posture.

  By configuring the walk-in mechanism and the fall-down mechanism in this way, the number of parts for configuring both the mechanisms is reduced, so the vehicle seat device 10 that simplifies the configuration of the walk-in mechanism and the fall-down mechanism. Can be realized.

  In particular, as an operating means for tilting the stopper 31, the stopper 31 that contacts in the first tilted state is brought into contact with the contact edge 22a of the first piece 22 and this contacted state is released in the second tilted state. A lever 37, a lever spring member that biases the lever 37 toward the first tilted state, and a tension operation when the lever 37 tilts toward the second tilted state against biasing by the lever spring member The strap 42 is provided.

  Accordingly, when the seat back is further tilted from the forward tilted posture, the lever 37 is tilted to the second tilted state by pulling the strap 42, and the contact edge 22a of the stopper 31 and the first piece 22 Therefore, the transition from the walk-in state to the fall-down state can be easily performed.

In addition, this invention is not limited to the said embodiment, You may actualize as follows.
(1) The strap 42 is not limited to being pulled out to the side portion of the seat cushion frame 12, and may be pulled out to the rear portion of the seat cushion frame 12, for example. In this manner, the pull-out position of the strap 42 can be easily changed according to an occupant sitting on the vehicle seat 11 or the like.

(2) The means for switching the tilting state of the lever 37 to either the first tilting state or the second tilting state is not limited to the use of the strap 42, and other tensile members may be employed. Moreover, you may switch the tilting state of the lever 37 to either a 1st tilting state or a 2nd tilting state using another mechanical structure.

DESCRIPTION OF SYMBOLS 10 ... Vehicle seat apparatus 11 ... Vehicle seat 12 ... Seat cushion frame 13 ... Seat back frame 15 ... Shoulder lever 20 ... Rotating member 22 ... 1st piece part (contact part)
23 ... 2nd piece part (pressing part)
24 ... pin (pressing part)
31 ... Stopper 35 ... Link (regulation release means)
37 ... Lever (operating means)
42 ... Strap (tensile member, operating means)
50 ... slide rail member 53 ... lock member (slide lock mechanism)
54 ... Pressing piece (regulation release means)

Claims (1)

A seat cushion slidably attached to the vehicle body;
A seat back attached to the seat cushion so as to be tiltable around a predetermined tilting axis;
A reclining mechanism for controlling the tilt of the seat back with respect to the seat cushion and controlling the tilt angle;
A shoulder lever that is provided at the shoulder of the seat back and is operated when releasing the tilt restriction of the seat back with respect to the seat cushion by the reclining mechanism;
A slide lock mechanism capable of regulating the sliding of the seat cushion;
A walk-in mechanism for restricting the tilt of the seat back tilted to the forward tilt posture with respect to the seat cushion and releasing the regulation by the slide lock mechanism;
When further tilting before Symbol stoop without returning the seat back to the state before leaning fall down to the restricted state of the slide lock mechanism is released with the tilting restriction of the seat back by the walk-in mechanism Mechanism,
A vehicle seat device comprising:
The walk-in mechanism is
A rotating member that has a contact portion and a pressing portion and rotates around the predetermined tilt axis according to the tilt of the seat back;
A stopper for restricting the rotation of the rotation member in the forward tilt direction so that the seat back is maintained in the forward tilt posture by contacting the contact portion;
Restriction release means for releasing the slide restriction by the slide lock mechanism by being pressed by the pressing portion when the stopper is in contact with the contact portion;
The fall-down mechanism is
An operation means that is operated when releasing the rotation restriction of the rotation member by releasing the contact state between the stopper and the contact portion by moving the stopper;
The restriction releasing means is configured to release the pressing state by the pressing portion by further rotating the turning member in the forward tilt direction in accordance with the release of the turning restriction by the operation of the operating means. To be in a regulated state ,
The operation means includes
A lever that is supported so as to be tiltable, contacts the stopper in contact with the first tilted state, and releases the contact state in the second tilted state;
A biasing member that biases the lever toward the first tilted state;
A tension member that is pulled when the lever is tilted toward the second tilting state against the biasing by the biasing member;
Arranged on the side of the seat cushion so as to comprise
The restriction release means is supported by a predetermined pin so as to be tiltable and can be contacted at one side edge with respect to the pressing portion of the rotating member that rotates in a forward tilt direction by a link spring member. A link to be biased, and a slide cable having one end fixed to the link;
The link tilts in one direction when the one side edge is pushed down by the pressing portion while the contact portion is in contact with the stopper, and the contact between the contact portion and the stopper is reduced. When the rotating member is released and further rotated in the forward tilt direction, the pressing portion gets over the one side edge that has been pushed down and does not come into contact with the link. Formed to tilt in another direction different from the one direction,
The slide cable applies a tensile force for releasing the slide restriction to the slide lock mechanism when the link tilts in the one direction, and the tensile force when the link tilts in the other direction. configured to release the by seat apparatus according to claim Rukoto.

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