JP2010076603A - Seat device of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat device of a vehicle capable of expanding the foot space of a seat even in a case where a rear wheel house is provided in the rear of a back seat, in the seat device of the vehicle in which a front seat and the back seat are arranged on a floor panel forming a bottom face of a vehicle body, and in the rear part near the back seat, the rear wheel house storing rear wheels is provided in a protruding manner in a cabin. <P>SOLUTION: The seat device of the vehicle is provided with a seat cushion support mechanism 30 supporting a seat back 22 of the back seat 20 to the floor panel 2 with its lower end part separated from the floor panel 2, and supporting a seat cushion 21 of the back seat 20 to the floor panel 2 independently from the seat back 22 so that the rear end part of the cushion 21 can be moved backward for a predetermined quantity to a position behind the lower end part of the seat back 22, passing between the lower end part of the seat back 22 and the floor panel 2. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a seat structure of a rear seat disposed on a floor panel forming a bottom surface of a vehicle body, and belongs to the technical field of a vehicle seat device.

  A seat device having a seat cushion and a seat back is disposed on a floor panel that forms the bottom surface of the vehicle body. In that case, the front seat is configured to be able to slide back and forth, change the reclining angle of the seat back, change the seat cushion seat height, etc. so as to take an optimal posture during driving, In the rear seat, both the seat cushion and the seat back may be fixed.

  However, there are various types of occupants seated in the rear seat, and the rear seat is also required to improve comfort when seated. For example, Patent Document 1 discloses a configuration in which a seat cushion is supported so as to be pivotable about a front portion so that the rear portion can be moved upward. The height can be adjusted.

JP 2000-335291 A

  By the way, there is a case where a rear wheel house for accommodating a rear wheel is provided in the vicinity of the rear of the rear seat so as to protrude into the vehicle interior. In this case, the rear end position of the rear seat is restricted and the rear seat is restricted. The foot space between the front seat and the front seat may not be wide, but in the one described in Patent Document 1, only the height of the seating surface can be adjusted, and this can be dealt with. Can not.

  Accordingly, an object of the present invention is to provide a vehicle seat device capable of expanding the foot space of a rear seat even when a rear wheel house is provided behind the rear seat.

  In order to solve the above-described problems, the present invention is configured as follows.

  First, in the invention according to claim 1 of the present application, a front seat and a rear seat are disposed on a floor panel forming a bottom surface of a vehicle body, and a rear wheel is disposed in the vicinity rear of the rear seat. A vehicle seat device in which a rear wheel house to be housed is provided so as to protrude into a vehicle interior, and a seat back of the rear seat is supported by the floor panel with a lower end portion separated from the floor panel. In addition, the seat cushion of the rear seat passes between the lower end portion of the seat back and the floor panel, and the rear end portion of the cushion is located rearward from the lower end portion of the seat back. It has a seat cushion support mechanism that supports the floor panel independently of the seat back so as to be able to move quantitatively.

  According to a second aspect of the present invention, in the vehicle seat apparatus according to the first aspect, the seat cushion support mechanism moves the front portion of the seat cushion downward when the seat cushion moves rearward. It is made to move to.

  According to a third aspect of the present invention, in the vehicle seat device according to the first or second aspect, the seat back is supported at the lower end of the seat back by the floor panel via a seat back support bracket. The seat back support bracket is disposed behind the seat cushion, and the support bracket is retracted to avoid interference with the rear end portion of the cushion when the seat cushion moves rearward. A portion is provided.

  According to a fourth aspect of the present invention, in the vehicle seat device according to any one of the first to third aspects, the seat back is supported on the seat cushion so as to be able to move forward. And when the seat back is tilted forward in a state where the seat cushion is moved backward by the predetermined amount to a position where the rear end of the seat cushion is located behind the lower end of the seat back, the lower end of the seat back The seat cushion has a structure that interferes with the rear end portion of the seat cushion, and the seat cushion is in front of the seat back in a state where the predetermined amount is moved rearward to a position where the rear end portion is located behind the lower end portion of the seat back. It is characterized in that a forward regulation mechanism for regulating the fall is provided.

  Next, the effect of the present invention will be described.

  According to the first aspect of the present invention, since the seat back of the rear seat is supported by the floor panel with the lower end portion spaced apart from the floor panel, the lower end portion of the seat back and the floor panel are supported. A space is formed between The seat cushion of the rear seat passes between the lower end portion of the seat back and the floor panel by the seat cushion support mechanism, and the rear end portion of the cushion is located behind the lower end portion of the seat back. Since the seat back is supported by the floor panel independently of the seat back so that it can move a predetermined amount back to the position, by moving the seat cushion backward by the predetermined amount, the front seat and the rear seat The front-rear distance with the seat cushion can be increased. Therefore, even if the rear wheel house is provided in the vicinity of the rear seat and the entire rear seat cannot be moved backward, the passenger's foot space can be expanded. The predetermined amount is set to an amount that allows the seat cushion to be stably seated even when the seat cushion is moved backward by a predetermined amount. That is, it does not include anything that moves backward so that it cannot be seated stably on the seat cushion.

  According to the second aspect of the present invention, when the seat cushion moves rearward, the front portion of the seat cushion moves downward, so that the seating surface of the cushion is lowered at the front portion. Therefore, compared with the case where the front portion does not move downward, the range of seating postures that can be taken by the occupant is widened, and the comfort at the time of sitting is improved. In particular, in the case of a small occupant (compared to a standard occupant), if the seat cushion has a high seating surface, for example, it is difficult for the foot to hit the floor or the knee angle tends to be small. For example, since the seat surface of the seat cushion can be lowered at the front part, the problem of the sitting posture is improved, and the comfort at the time of sitting is improved.

  By the way, the seat back may be supported by the floor panel via the seat back support bracket at the lower end portion thereof, but when the seat back support bracket is disposed behind the seat cushion, the seat cushion and the seat back support bracket are arranged. May interfere with the rearward movement of the seat cushion, and a sufficient amount of rearward movement may not be ensured.

  However, according to the invention described in claim 3, the seat back support bracket is provided with the retracting portion for avoiding interference with the rear end portion of the cushion when the seat cushion is moved backward. Even if it is supported by a support bracket disposed behind the seat cushion, it is possible to secure a larger amount of rearward movement of the seat cushion.

  By the way, it is conceivable that the seat back is configured to be able to be moved forward on the seat cushion, but in this case, depending on the shape of the lower end portion of the seat back and the shape of the rear end portion of the seat cushion, the seat cushion If the seat back is moved forward in a state where the rear end is moved backward by a predetermined amount to a position behind the lower end of the seat back, the lower end of the seat back interferes with the rear end of the seat cushion. In this case, some countermeasure is required.

  Therefore, in the invention according to claim 4, the forward movement of the seat back in a state where the seat cushion is moved backward by the predetermined amount to a position where the rear end portion thereof is rearward from the lower end portion of the seat back is regulated. According to this, a forward-restricting mechanism is provided, and the lower end portion of the seat back and the rear end portion of the seat cushion are reliably prevented from interfering with each other. That is, the seat back and the seat cushion are prevented from being damaged.

  Hereinafter, a vehicle seat device according to an embodiment of the present invention will be described.

  As shown in FIGS. 1A and 1B, on a floor panel 2 forming the bottom surface of the vehicle body of the vehicle 1 according to the present embodiment, front seats 10 and 10 for a driver seat and a passenger seat, and a rear seat seat 20 are arranged. Here, a kick-up portion 2b raised to the reference surface portion 2a is provided behind the reference surface portion 2a on the floor panel 2 where the front seats 10 and 10 are disposed. Is provided on the kick-up portion 2b.

  As shown in FIG. 3, the rear wheel houses 2c and 2c for housing the rear wheels W and W bulge the left and right sides of the floor panel 2 toward the passenger compartment as shown in FIG. It is provided protruding in the room.

  The front seat 10 includes a seat cushion 11 and a seat back 12, and is supported by the floor panel 2 so as to be slidable back and forth as a whole of the front seat 10, and the seat back 12 is configured to be reclining. .

  The rear seat 20 includes a seat cushion 21 and a seat back 22 that are substantially the same width as the passenger compartment width.

  As shown in FIG. 2, the seat cushion 21 and the seat back 22 of the rear seat 20 are independently supported by the floor panel 2 via a seat cushion support mechanism 30 and a seat back support mechanism 40, and support for these is supported. By the mechanisms 30 and 40, the rear seat 20 is in a state in which the seat back 22 is moved forward on the seat cushion 21 with respect to the reference state shown in FIG. 4 and the reference state shown in FIG. 6), the rear end portion of the cushion 21 passes through the space between the lower end portion of the seat back 22 and the floor panel 2 with respect to the reference state shown in FIG. A state in which a predetermined amount is moved backward to a position behind the lower end of the back 22 (hereinafter, this state is referred to as “the seat cushion backward movement state”) is achieved. And it is configured to function. The predetermined amount is set to an amount that allows the seat cushion 21 to be stably seated even when the seat cushion 21 is moved backward by a predetermined amount. That is, it does not include anything that moves backward so that it cannot be seated stably on the seat cushion 21.

  Before describing the support mechanisms 30 and 40, the basic structure of the seat cushion 21 and the seat back 22 will be described. As shown in FIG. 4, the seat cushion 21 is located at the left and right side end portions of the seat cushion 21. A seat cushion frame comprising a front and rear frame 21F (only the left side is shown) that extends substantially front and rear, and a horizontal frame (not shown) that extends in the vehicle width direction between these frames 21F and connects these frames 21F. And a cushion material 21C which is provided so as to cover the seat cushion frame and which constitutes the skin.

  In addition, the seat back 22 has a vehicle width between the upper and lower frames 22F (only the left side is shown) extending substantially vertically at the left and right side ends of the seat back 22 and in the vicinity of the center in the vehicle width direction. A seat back frame that extends in the direction and is a horizontal frame (not shown) that connects these frames 22F, and a cushion material 22C that is provided so as to cover the seat back frame and that constitutes the skin. .

  Next, the seat back support mechanism 40 will be described. As shown in FIGS. 2 and 7, the seat back support mechanism 40 includes a shaft 42 provided in the vehicle width direction below the upper and lower frames 22F of the seat back 22. And a seat back support bracket 41 that is fixed to the floor 22 and rotatably supports the shaft 42, and the seat back 22 is moved forward from the reference state shown in FIG. 4 and the seat back forward shown in FIG. It is supported so as to be able to rotate between states. As shown in FIG. 2, a total of three seat back support brackets 41 and shafts 42 are provided on the left and right sides of the seat back 22 and in the vicinity of the middle thereof corresponding to the upper and lower frames 22F.

  Here, as can be seen from FIG. 7, each seat back support bracket 41 is provided in the lower part of the front part of the rear wheel house 2 c so as to be spaced apart upward from the upper surface of the kick-up part 2 b. The lower end portion of 22 is configured to be spaced apart from the upper surface of the kick-up portion 2b of the floor panel 2 by a predetermined amount in the standing state. Here, the predetermined amount is set so that the seat cushion 21 and the seat back 22 do not interfere when the seat cushion 21 is moved to the rear position as will be described later.

  Next, the seat cushion support mechanism 30 will be described. As shown in FIGS. 2 and 7, the support mechanism 30 supports a front support mechanism 50 that supports the front portion of the seat cushion 21 and a rear portion of the seat cushion. And a rear support mechanism 60.

  As shown in FIGS. 2 and 7, the front support mechanism 50 is fixed to the floor 2 on the left and right sides of the seat cushion 21, and includes a support bracket 51 in which a substantially U-shaped long groove 51 a is formed, and the seat cushion 21. The left and right horizontal bar portions 53a provided on the rear end side are supported by the front and rear frames 21F so as to be movable in the front-rear direction via the support block 52 and bent in a crank shape in plan view (see FIG. 2). The operating lever 53 is movably locked along the U-shaped long groove 51a of the support bracket 51, the rear end is locked by a fixing member 54 provided on the front and rear frame 21F, and the front end is locked by the lever member. And a coil spring 55 engaged with a groove (not shown) provided in the horizontal bar portion 53a. In addition, 51, 52, 54 and 55 other than the operation lever 53 are provided on the left and right sides of the seat cushion 21, respectively.

  The rear support mechanism 60 is configured by a link mechanism. That is, the support bracket 61 fixed to the floor 2 and the upper end portion are rotatably connected to a shaft 62 extending in the vehicle width direction provided at the rear portion of the front and rear frame 21F, and the lower end portion is provided on the support bracket 61. And a link member 64 rotatably supported by a shaft 63 extending in the vehicle width direction. As can be seen from FIG. 2, these members 61 to 64 are respectively provided on the left and right sides of the seat cushion 21.

  As shown in FIG. 7, the seat cushion support mechanism 30 as a whole is pulled backward by the coil spring 55 by the horizontal bar 53a of the operation lever 53 of the front support mechanism 50, so that the horizontal bar 53a is supported by the support bracket 51. The link member 64 of the rear support mechanism 60 is configured to be tilted forward in a state where it is locked to the rear end of the upper locking groove 51b of the U-shaped long groove 51a. 21 is positioned at a reference position (a position corresponding to the reference state). In order to stabilize the link member 64 in the forward tilt state, the link member 64 is provided with an abutment portion 64a that abuts on the mounting surface portion 61a of the support bracket 61 in the forward tilt state.

  On the other hand, when the operation lever 53 is pulled forward as indicated by the arrow α, the horizontal bar 53a is moved to the lower locking groove 51c along the U-shaped long groove 51a. As shown, when the horizontal bar portion 53a of the operation lever 53 of the front support mechanism 50 is pulled rearward by the coil spring 55, the horizontal bar portion 53a becomes the lower locking groove portion of the U-shaped long groove 51a of the support bracket 51. It is locked to the rear end of 51c. In this case, in this state, the link member 64 of the rear support mechanism 60 is configured to be tilted rearward, whereby the front portion of the seat cushion 21 is below the reference position as indicated by the arrow β. A position where the seat cushion 21 is lowered and moved rearward by a predetermined amount from the reference position through the lower end portion of the seat back 22 and the kick-up portion 2b of the floor panel 2 (a position corresponding to the seat cushion rearward movement state). It is supposed to be located in. The link member 64 is provided with a contact portion 64b that contacts the mounting surface portion 61a of the support bracket 61 when the link member 64 is in the rearward tilted state so that the link member 64 is stabilized in the rearward tilted state.

  Here, when the seat cushion 21 is in the rear position as described above, the rear end portion of the cushion 21 moves slightly upward as indicated by an arrow γ, but the rearward movement amount of the seat cushion 21 is increased as much as possible. In order to ensure, it is necessary to avoid interference with the seat back support bracket 41. Therefore, in the present embodiment, the seat back support bracket 41 has a structure shown in FIG. That is, the seat back support bracket 41 has a mounting surface portion 41a fixed to the floor panel 2 and a support surface portion 41b that rises forward and upward from the mounting surface portion 41a, but at the front edge of the support surface portion 41b. A semicircular cutout 41c is formed. Note that the notch 41c may not be necessary for the seat back support bracket 41 on the side of the seat back 22. That is, when the support surface portion 41b of the bracket 41 is located on the outer side in the vehicle width direction than the seat cushion 21, there is no possibility that they interfere with each other.

  As shown in FIG. 3, the rear seat 20 is provided with a lock mechanism 70 that locks the seat back 22 to the inner surface of the side part 3 of the vehicle body in an upright state. The lock mechanism 70 includes a striker 71 provided on the vehicle body side portion 2 and a latch mechanism 80 provided on an upper portion of the seat back 22 on the vehicle body side portion side. The lock mechanisms 70 are provided on the left and right sides of the seat back 22, respectively.

  As shown in FIG. 10, the latch mechanism 80 is bracketably mounted on the upper part of the upper and lower frames 22 </ b> F of the seat back 22, and is rotatably supported on the upper part of the bracket 81, and can be engaged with the striker 71. An S-shaped lock member 82 having an engaging portion 82a, and an urging member (not shown) that urges the lock member 82 to rotate in the locking direction (clockwise direction in FIG. 10). Have. Further, as an operation mechanism for releasing the lock, a case member 83 fixed to the upper portion of the bracket 81 and a pressing member 84 provided so as to be movable up and down within the case member 83 are provided. Even when the S-shaped locking member 82 rotates between the solid line and the imaginary line, the pressing member 84 has the lower end portion of the pressing member 84 connected to the engaging portion 82a of the S-shaped locking member 82. Are arranged so as to abut on the upper part of the abutting part 82b provided at the opposite end. In the vicinity of the lower end portion of the pressing member 84, a retaining member 85 for preventing the member 84 from coming out upward is fixed.

  Then, by pushing down the pressing member 84 to the position indicated by the phantom line against the urging force of the urging member, the tip of the engaging portion 82a of the S-shaped lock member 82 is positioned higher than the striker 71. The engagement is released and the seat back 22 can be moved forward.

  Here, when the seat cushion 21 is in the rear position, the rear end portion of the cushion 21 moves slightly upward as described above, but the shape of the seat cushion 21 and the seat back 22 according to the present embodiment. As shown in FIG. 8, when the seat back 22 is moved forward as indicated by an arrow δ when the seat cushion 21 is in the rear position, the rear end portion of the seat cushion 21 and the lower end portion of the seat back 22 are shown. May interfere with each other as indicated by an arrow X, and both 21 and 22 may be damaged. Therefore, in the present embodiment, when the seat cushion 21 is in the rear position, the forward-restricting mechanism 90 that restricts the forward-turning of the seat back 22 is provided. The forward-restricting mechanism 90 will be described below. To do.

  That is, as shown in FIG. 10, the forward-restricting mechanism 90 is disposed on the bracket 81 between the position indicated by the solid line and the position indicated by the phantom line below the contact portion 82b of the S-shaped lock member 82. An approximately rectangular-shaped rotation member 91 that is rotatably supported, one end side in the longitudinal direction of the rotation member 91 (the rear end side in the solid line), and the upper and lower frames 22F are interposed in the vertical direction. A wire member 93 (see FIG. 4) for connecting the provided coil spring 92, the other end in the longitudinal direction of the rotating member 91, and the upper end of the link member 64 of the seat cushion support mechanism 30, and the wire member 93 And a covering member 94 whose upper end is fixed to the bracket 81 and whose lower end is fixed to the lower end of the upper and lower frames 22F. Here, the lower end portion of the coil spring 92 is fixed to the upper and lower frames 22F just below the rotation shaft 95 of the rotation member 91, whereby the rotation member 91 is positioned clockwise relative to the position indicated by the phantom line. It is designed not to rotate. Further, when the rotating member 91 is at the position indicated by the phantom line, the upper end portion thereof comes into contact with the lower end portion of the contact portion 82 b of the S-shaped lock member 82. Note that the forward-restricting mechanism 90 may be provided in each of the left and right lock mechanisms 70, or may be provided in only one of them.

  Here, the length of the wire member 93 is more specific when the rear seat 20 is in the reference state shown in FIG. 4 (when the seat cushion 21 is in the reference position). When the link member 64 is rotated forward about the shaft 63 and is in a forward inclined state, as shown in FIG. 10, the end of the rotating member 91 on the side to which the wire member 93 is connected is the wire member. By being pulled downward at 93, the length is set to a length that rotates to a position where the longitudinal direction becomes substantially horizontal as indicated by a solid line. According to such a configuration, when the seat back 22 is in the standing state and the rotating member 91 is in the locked state, there is a gap between the rotating member 91 and the contact portion 82 b of the S-shaped lock member 82. S is generated. Therefore, it is possible to push down the pressing member 84 to the position indicated by the phantom line. When the pressing member 84 is pushed down, the S-shaped lock member 82 rotates to the position indicated by the phantom line, and the engagement between the striker 71 and the lock member 82 is released. Will be. That is, the seat back 22 can be moved forward.

  On the other hand, when the seat cushion 21 is in the rear position, as shown in FIG. 8, the distance between the upper end of the link member 64 and the lower end of the covering member 94 is shorter than when the seat cushion 21 is in the reference position. . Therefore, as shown in FIG. 10, the rotating member 91 is rotated to the position indicated by the imaginary line in the clockwise direction in FIG. 10 while pulling the wire member 93 upward by the biasing force of the coil spring 92. Accordingly, the end of the rotating member 91 on the side to which the wire member 93 is fixed comes into contact with the lower end of the contact portion 82 b of the lock member 83. Therefore, it becomes impossible to push down the pressing member 84. That is, the forward movement of the seat back 22 is restricted. In addition, when the rotation member 91 is rotated to the position indicated by the phantom line, the arrangement of the rotation member 91 and the like are connected to the link member 64 in the wire member 93 and the covering member 94 as shown in FIG. It is set so that slack occurs in the portion between the lower end of the.

  On the other hand, when the seat back 22 is in the forward-turned state as shown in FIG. 11, the distance between the upper end of the link member 64 and the lower end of the covering member 94 is shorter than when the seat cushion 21 is in the reference position. . Accordingly, in FIG. 10, the rotating member 91 pulls the wire member 93 upward by the urging force of the coil spring 92 and rotates in the clockwise direction. At this time, the rotating member 91 is not engaged with the striker 71. Therefore, this operation itself has no adverse effect. On the contrary, when the seat back 22 is raised, the distance between the upper end of the link member 64 and the lower end of the covering member 94 becomes longer. Therefore, the rotating member 91 is connected to the wire member 93. By pulling the end of the formed side downward by the wire member 93, the longitudinal direction is rotated to a position where the longitudinal direction is substantially horizontal as shown by a solid line. That is, when the standing state is established, the S-shaped locking member 82 is pivotable, whereby the engagement with the striker 71 is possible.

  Next, effects and the like of the vehicle seat device according to the present embodiment will be described.

  First, since the seat back 22 of the rear seat 20 is supported by the floor panel 2 with the lower end portion separated from the floor panel 2, there is a space between the lower end portion of the seat back 22 and the floor panel 2. It is formed. The seat cushion 21 of the rear seat 20 is passed between the lower end portion of the seat back 22 and the floor panel 2 by the seat cushion support mechanism 30, and the rear end portion of the cushion 21 is the seat back 22. Since the seat back 22 is supported by the floor panel 2 independently of the seat back 22 so that it can move backward by a predetermined amount to a position behind the lower end of the seat, the seat cushion 21 can be moved backward by moving the seat cushion 21 backward. The front-rear distance between the seat seat 10 and the seat cushion 21 of the rear seat 20 can be increased. Therefore, even when the rear wheel house 2c is provided near the rear seat 20 and the entire rear seat 20 cannot be moved rearward, the foot space of the occupant can be expanded. A large luggage can be placed, and it is easy to get on and off the rear seat 20.

  In the present embodiment, when the seat cushion 21 moves rearward, the front portion of the seat cushion 21 moves downward, so that the seating surface of the cushion 21 is lowered at the front portion. Therefore, compared with the case where the front portion does not move downward, the range of seating postures that can be taken by the occupant is widened, and the comfort at the time of sitting is improved. In particular, the sitting posture of a small occupant (compared to a standard occupant) is improved, and comfort at the time of sitting is improved. This point will be described in detail as an example with reference to FIG. 12. When the seat cushion 21 is at the reference position shown in FIG. 12A, a standard occupant (shown by a thick dotted line) is used. The knee angle θ is smaller than that of an occupant (indicated by a thick solid line). This is determined by the thigh D being held by the seat cushion 21 regardless of whether the occupant is small or standard. Therefore, a small occupant is less likely to extend the leg forward than a standard occupant and is less comfortable when seated. On the other hand, as shown in FIG. 12B, when the seat cushion 21 is in the rear position, the seat cushion 21 moves rearward, and the lower portion of the seat back 11 of the front seat 10 and the seat of the rear seat 20. Since the distance between the front end of the cushion 21 increases from L to L ′ and the front portion of the seat cushion 21 moves downward, the small passenger is larger than when the seat cushion 21 is in the reference position. It is possible to position the thigh at a low position. Therefore, even a small passenger can increase the knee angle θ. That is, it becomes easy to extend the leg forward, and comfort at the time of sitting improves. In addition, since the hip angle can be increased from φ to φ ′, the waist is bent gently, and this also improves the comfort during sitting. In addition, for a particularly small passenger such as a child, the feet can easily come into contact with the floor panel 2 and the stability when seated is improved. In FIGS. 12 (a) and 12 (b), the standard occupant's seating posture does not change much. However, when the distance L is wider than in the figure, the standard occupant is also seated. A posture improvement effect is obtained.

  Further, since the seat back support bracket 41 is provided with a retracting portion 41c that avoids interference with the rear end portion of the cushion 21 when the seat cushion 21 is moved rearward, the seat back 22 is placed behind the seat cushion 21. Even if it is supported by the support bracket 41 arranged in the above, it is possible to secure a larger amount of rearward movement of the seat cushion 21. Further, in the structure of the seat cushion support mechanism 30 of the present embodiment, it is possible to secure a larger amount of downward movement of the front portion of the seat cushion 21. That is, in the present embodiment, the seat back 22 is supported by the floor panel 2 via the seat back support bracket 41 at the lower end thereof, and the seat back support bracket 41 is disposed behind the seat cushion 21. Therefore, when the seat cushion 21 is moved backward, the rear end portion of the seat cushion 21 and the seat back support bracket 41 may interfere with each other, which may restrict the seat cushion 21 from moving backward. Since the retracting portion 41c is provided in the seat back support bracket 41 as described above, this is avoided.

  Further, a forward-restricting mechanism 90 is provided for restricting the forward movement of the seat back 22 in a state where the seat cushion 21 is moved rearward by a predetermined amount to a position where the rear end thereof is behind the lower end of the seat back 22. Therefore, the lower end portion of the seat back 22 and the rear end portion of the seat cushion 21 interfere with each other, and damage to the seat cushion 21 and the seat back 22 due to this is reliably prevented. That is, in the present embodiment, the seat back 22 is configured to be able to move forward on the seat cushion 21, but the seat back 22 has a configuration in which the seat back 22 and the rear end of the seat cushion 21 are shaped. If the seat back 22 is moved forward while the cushion 21 is moved backward by a predetermined amount, the lower end portion of the seat back 22 and the rear end portion of the seat cushion 21 may interfere with each other. This is avoided because the forward-restricting mechanism 90 is provided as described above.

  In the present embodiment, the seat cushion support mechanism 30 is configured to move the front portion of the seat cushion 21 downward when the seat cushion 21 moves rearward. Includes those that do not move the front part of the seat cushion downward. In this case, for example, the seat cushion can be configured to be movable backward by a predetermined amount by a known front and rear slide rail or the like.

  According to the present invention, even when a rear wheel house is provided behind the rear seat, it is possible to provide a vehicle seat device capable of expanding the foot space of the seat, which can be widely used in the automobile industry. .

1 is a side view of a vehicle according to an embodiment of the present invention. 1 is a plan view of a vehicle according to an embodiment of the present invention. It is the perspective view which looked at the backseat sheet from diagonally forward. It is the perspective view which looked at the vehicle rear part from diagonally backward. It is a left view (AA sectional view of Drawing 1B) of a backseat seat (reference state). It is a left view of a backseat seat (seat back forward state). It is a left view of a backseat seat (seat cushion back movement state). It is an expansion left view of the lower part of a backseat seat (reference state). It is an expansion left view of the lower part of a backseat seat (seat cushion back movement state). It is an expansion perspective view of a seat back support bracket. FIG. 5 is an enlarged view of a lock mechanism and a forward-restricting mechanism portion of FIG. 4. It is an expansion left view of the lower part of a backseat seat (seat-back forward state). It is explanatory drawing of the effect of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Floor panel 2c Rear wheel house 10 Front seat 20 Rear seat 21 Seat cushion 22 Seat back 30 Seat cushion support mechanism 41 Seat back support bracket 41c Retracting part 90

Claims (4)

A front seat and a rear seat are disposed on a floor panel that forms the bottom surface of the vehicle body, and a rear wheel house that houses a rear wheel is provided in the vicinity of the rear seat so as to protrude into the vehicle interior. Vehicle seat device,
The seat back of the rear seat is supported by the floor panel with a lower end portion separated from the floor panel,
The seat cushion of the rear seat passes through between the lower end portion of the seat back and the floor panel, and moves backward by a predetermined amount to a position where the rear end portion of the cushion is located behind the lower end portion of the seat back. A vehicle seat apparatus comprising a seat cushion support mechanism for supporting the floor panel independently of the seat back so as to be possible. The vehicle seat device according to claim 1,
The seat cushion support mechanism moves a front portion of the seat cushion downward when the seat cushion moves rearward. In the vehicle seat device according to claim 1 or 2,
The seat back is supported by the floor panel via a seat back support bracket at the lower end thereof,
The seat back support bracket is disposed behind the seat cushion,
In addition, the vehicle seat device is characterized in that the support bracket is provided with a retracting portion for avoiding interference with a rear end portion of the cushion when the seat cushion moves backward. In the vehicle seat device according to any one of claims 1 to 3,
The seat back is supported on the seat cushion so as to be able to move forward,
When the seat back is moved forward in the state where the seat cushion is moved backward by the predetermined amount to a position where the rear end portion thereof is located behind the lower end portion of the seat back, the lower end portion of the seat back and the seat cushion It is structured to interfere with the rear end,
A forward-falling regulation mechanism is provided that regulates forward-facing of the seatback in a state where the seat cushion is moved backward by the predetermined amount to a position where the rear end portion is behind the lower end portion of the seatback. A vehicle seat device.

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