JP2019077222A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat capable of easily switching a state of a vehicle seat from a normal state to a state in which the space in front can be effectively utilized even by a weak user. SOLUTION: A vehicle seat (vehicle seat S) has a seat cushion S1 and a seat back S2 in a normal state when an occupant sits, and the seat cushion S1 is closer to a floor F than in the normal state. It is arranged and the seat back S2 can be switched to a dive-down state in which the seat back S2 is folded on the seat cushion S1. The seat cushion S1 is configured to be slidable backward in a normal state. [Selection diagram] Fig. 1

Description

  The present invention relates to a vehicle seat capable of switching the state of a seat cushion and a seat back.

  Conventionally, as a vehicle seat, the state of the seat cushion and the seat back is overlapped with the normal state when the occupant is seated, the dive down state where the seat back is folded on the seat cushion, and the upright seat back There is known one that can be switched to a tip-up state in which the seat cushion is folded (see Patent Document 1). Specifically, in this technology, the seat cushion is fixed to an arm rotatably provided on the seat back. Then, by rotating the seat cushion together with the arm and switching from the normal state to the tip-up state, it is possible to effectively utilize the space in front of the vehicle seat.

JP, 2009-067309, A

  However, in the prior art, since it is necessary to lift the heavy seat back at the time of switching to the tip-up, there is a possibility that the user may feel an operation as a powerless user.

  Therefore, an object of the present invention is to provide a vehicle seat capable of easily switching the state of the vehicle seat from the normal state to a state in which the space in front can be effectively used, even for a powerless user.

  The present invention for solving the above problems is characterized in that the seat cushion and the seat back are in the normal state when the occupant is seated and the seat cushion is disposed closer to the floor than the normal state, and the seat cushion The vehicle seat is switchable to a dive-down state in which the seat back is folded over, and in the normal state, the seat cushion is configured to be able to slide rearward. I assume.

  According to this configuration, the space in front of the vehicle seat can be expanded simply by sliding the seat cushion rearward from the normal state. Therefore, even a weak user can easily switch the state of the vehicle seat from the normal state to a state in which the space in front can be effectively used.

  The vehicle seat may include an arm provided on the seat back, and the seat cushion may be slidably supported by the arm.

  According to this, since the position of the seat cushion in the vertical direction can be freely set only by changing the shape of the arm, it is possible to slide the seat cushion well.

  In addition, the vehicle seat may be provided with a lock mechanism that locks the position of the seat cushion with respect to the arm at a first position corresponding to the normal state and a second position behind the first position. Good.

  According to this, since the position of the seat cushion is locked to the first position and the second position by the lock mechanism, the vehicle seat can be well maintained in a normal state and a state where the space in front can be effectively used. Can.

  The locking mechanism may be configured to lock the position of the seat cushion relative to the arm in at least one position between the first position and the second position.

  According to this, since the seat cushion can be locked at three or more positions, for example, in the case where it is desired to sandwich an object between the front end of the seat cushion and the rear surface of the vehicle seat in front thereof Can increase the types of

  In addition, when the seat cushion is positioned at the second position, the amount of forward protrusion of the seat cushion from the seat back may be equal to or greater than the amount of backward protrusion.

  According to this, since the amount of protrusion of the seat cushion to the rear can be suppressed, the front space can be secured while suppressing the space at the rear of the seat back from being reduced.

  The arm may be rotatably connected to the seat back.

  According to this, since the arm can be rotated relative to the seat back when switching to the dive down state, switching to the dive down state can be favorably performed.

  In addition, the arm has a first portion connected to the seat back and a second portion supporting the seat cushion, and in the normal state, the second portion is the first portion. It may be located ahead and below the connecting part with the above-mentioned seat back.

  According to this, switching to the dive down state can be performed favorably.

  In addition, the vehicle seat includes a base member rotatably supporting the lower end portion of the seat back frame, and a support member rotatably coupled to the arm to support the arm, the normal When in the state, the seat cushion may be configured to be slidable rearward with respect to the support member.

  According to this, in the normal state, since the seat cushion can slide backward with respect to the support member, for example, the seat cushion can be smoothly moved rearward as compared with a structure in which the support member moves with the seat cushion. Can be done.

  According to the present invention, even a weak user can easily switch the state of the vehicle seat from the normal state to a state where the space in front can be effectively used.

  In addition, by providing a lock mechanism that locks the seat cushion at three or more positions, for example, in the case where it is desired to sandwich an object between the front end of the seat cushion and the rear surface of the vehicle seat in front thereof, You can increase the types.

  Further, by setting the amount of forward projection of the seat cushion from the seat back at the second position to be equal to or greater than the amount of backward projection, the front space is secured while suppressing a reduction in the space behind the seat back. be able to.

  Further, by connecting the arm to the seat back rotatably, switching to the dive down state can be favorably performed.

  Moreover, the switch to the dive down state can be favorably performed by arranging the second portion of the arm that supports the seat cushion in front of and below the connecting portion of the arm to the seat back.

  Further, in the normal state, by making the seat cushion slideable backward with respect to the support member, for example, the seat cushion can be smoothly moved rearward as compared with a structure in which the support member moves together with the seat cushion. it can.

FIG. 1 is a view showing a vehicle seat in a normal state according to an embodiment of the present invention. It is a figure showing the seat for vehicles of a 1st cushion retreat state. It is a figure showing the seat for vehicles of a 2nd cushion retreat state. It is a figure showing a vehicular seat in a dive down state. It is a perspective view which disassembles and shows a slide mechanism. A diagram (a) showing the state of the slide mechanism etc. in the normal state, a diagram (b) showing the state of the slide mechanism etc. in the first cushion retracted state, and a state of the slide mechanism etc. in the second cushion retracted state It is a figure (c) shown.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, a vehicle seat S as an example of a vehicle seat is, for example, a seat used for a third row seat and a second row seat, and mainly includes a seat cushion S1 and a seat back S2 Have. In the present invention, front and rear, right and left, and upper and lower are based on the occupant sitting on the seat.

  The seat cushion S1 includes a seat cushion frame (not shown), a seat cushion pad S12, and a skin material S13. The seat cushion frame is a member that forms the framework of the seat cushion S1, and is made of metal or the like. The seat cushion pad S12 is made of urethane foam or the like and is supported by the seat cushion frame. The surface material S13 is made of synthetic leather, cloth or the like and covers the seat cushion pad S12.

  The seat back S2 includes a seat back frame S21, a seat back pad S22, and a skin material S23. The seat back frame S21 is a member forming a framework of the seat back S2, and is made of metal or the like. The seat back pad S22 is made of urethane foam or the like, and is supported by the seat back frame S21. The surface material S23 is made of synthetic leather, cloth or the like and covers the seat back pad S22.

  The vehicle seat S can switch the states of the seat cushion S1 and the seat back S2 between the normal state shown in FIG. 1, the cushion retracted state shown in FIGS. 2 and 3 and the dive down state shown in FIG. A switching mechanism 1 is provided. Here, the normal state refers to the state when the occupant is seated. In the normal state, the upper surface (seating surface) of the seat cushion S1 faces substantially upward, and the front surface (passenger support surface) of the seatback S2 faces substantially forward. Specifically, in the normal state, the direction of the front surface of the seat back S2 is an angle according to the occupant's preference by the operation of the reclining mechanism 2.

  Further, the cushion retracted state refers to a state in which the seat cushion S1 is slid rearward than the normal state while the seatback S2 maintains the normal state. More specifically, in the present embodiment, in the first cushion retracted state (the state of FIG. 2) in which the position of the seat cushion S1 is separated by the first distance D1 after the normal state, It is possible to switch to the second cushion retracted state (the state of FIG. 3) in which the position is separated by the second distance D2 later than the first retracted state. In the present embodiment, although D1 = D2, the present invention is not limited to this, and D1 ≠ D2 may be satisfied.

  In the dive down state, the seat cushion S1 is disposed closer to the floor F than in the normal state, and the seat back S2 is folded on the seat cushion S1. In the present embodiment, in the dive down state, the front surface of the seatback S2 is superimposed on the upper surface of the seat cushion S1, and the seatback S2 and the seat cushion S1 are disposed substantially parallel to the upper surface of the floor F. .

  The state switching mechanism 1 includes a seat back frame S21, an arm 10, a support member 20, a base member 30, a slide mechanism 40, and a lock mechanism 50. The seat back frame S21 has left and right side frames S24 which are disposed apart in the left-right direction. The arm 10, the support member 20, the base member 30, the slide mechanism 40, and the lock mechanism 50 are provided one on each side of the vehicle seat S.

  The arm 10 is provided on the seat back S2, and supports the seat cushion S1 slidably in the front-rear direction via the slide mechanism 40. The left and right arms 10 are disposed inward in the left-right direction relative to the left and right seat back frames S21. In addition, the seat cushion S1 is disposed on the inner side in the left-right direction than the left and right arms 10. The arm 10 is formed in an L shape. Specifically, the arm 10 has a first portion 11 extending along the seat back S2 in a normal state, and a second portion 12 extending forward from the lower end of the first portion 11 to support the seat cushion S1. ing. The first portion 11 is rotatably connected to the seat back S2 about a second axis A2. Specifically, the arm 10 is rotatably connected to the seat back frame S21. The upper end portion of the support member 20 is rotatably connected to the second portion 12 about the first axis A1. When in the normal state, the second portion 12 is located in front of and below the connecting portion of the first portion 11 with the seat back S2, that is, the second axis A2. In other words, in the normal state, the first axis A1 is located forward and downward of the second axis A2.

  The lower end portion of the seatback frame S21 is rotatably supported by the base member 30. The base member 30 is fixed to the floor F so as to protrude from the upper surface of the floor F.

  The lower ends of the left and right side frames S24 are connected by a connecting member S25 extending in the left-right direction. The left and right end portions of the connecting member S25 are connected to the left and right base members 30, respectively, so that the seat back frame S21 is rotatable around the connecting member S25. In the following description, the pivoting center of the seatback frame S21 is also referred to as a third axis A3. In the normal state, the third axis A3 is disposed forward and downward of the second axis A2 and rearward and downward of the first axis A1.

  Further, the lower end portion of the seat back frame S <b> 21 is connected to the base member 30 via the reclining mechanism 2. The seat back S2 is locked by the reclining mechanism 2 so as to be held at an angle according to the preference of the occupant. Further, a reclining release lever L1 for releasing the lock by the reclining mechanism 2 is provided on the upper portion of the seat back S2.

  Further, the base member 30 has a support hole 31 for rotatably and slidably supporting the lower end portion of the support member 20. The support holes 31 are provided penetrating the base member 30 in the left-right direction. The support holes 31 are inclined with respect to the front-rear direction so as to be positioned upward from the front to the rear.

  The support member 20 is a member that supports the second portion 12 of the arm 10. Lower end portions of the left and right support members 20 are connected by a connecting member 21 extending in the left-right direction. Then, the left and right end portions of the connection member 21 respectively enter the support holes 31 of the left and right base members 30 and are supported by the support holes 31 so that the support member 20 can rotate around the connection member 21. And, slide movement is possible. In the following description, the rotation center of the support member 20 is also referred to as a fourth axis A4. In the normal state, the fourth axis A4 is disposed forward and downward of the third axis A3 and forward and downward of the first axis A1.

  The left and right end portions of the connection member 21, that is, the connection portion of the support member 20 with the base member 30 are supported by the support holes 31 so as to be movable substantially in the front-rear direction. The left and right end portions of the connecting member 21 are formed in a circular shape in a sectional view, and are located at the rear position (the position shown in FIG. 1) when in the normal state, and frontward than the rear position when in the dive down state. And it is located in the lower front position (position of FIG. 4). Specifically, the rear position is a position corresponding to the rear end of the support hole 31, and the front position is a position corresponding to the front end of the support hole 31.

  In the support hole 31, a protrusion that restricts the movement of the end of the connecting member 21 may be provided. The projection holds the end of the connecting member 21 in the rear position in the normal state, and when switching from the normal state to the dive-down state, until the support member 20 pivots from the normal state by the first angle, It may be configured to restrict the forward movement of the end. Further, instead of the projection, for example, a member capable of advancing and retracting is provided at a projecting position projecting into the support hole 31 and a retracted position for retracting from the support hole 31, and this member restricts the movement of the end of the connecting member Or may be acceptable.

  The rearward rotation of the support member 20 is restricted by the rotation of the seat back S2 relative to the base member 30 being locked by the reclining mechanism 2. Specifically, the seat back S2, the arm 10, the support member 20, and the base member 30 are four-node links having one degree of freedom, and the rotation of the seat back S2 is locked by the reclining mechanism 2 so that the degree of freedom is increased. It becomes a triple link of 0. Therefore, when the reclining mechanism 2 is locked, the rearward rotation of the support member 20 is restricted.

  The slide mechanism 40 is a mechanism for enabling the seat cushion S1 to slide relative to the arm 10. As shown in FIG. 5, the slide mechanism 40 has a structure similar to that for sliding the vehicle seat S, for example, in the front-rear direction, and mainly includes a slider 41 and a rail 42. There is. The ball for sliding the slider 41 smoothly with respect to the rail 42 and the like are well known, so the illustration is omitted and the description is omitted.

  The slider 41 is a long member extending in the front-rear direction, and is fixed to the inside of the second portion 12 of the arm 10 in the left-right direction. The slider 41 has a first hole 41A, a second hole 41B, and a third hole 41C. The first holes 41A, the second holes 41B, and the third holes 41C are arranged at intervals along the front-rear direction. The distance between the first hole 41A and the second hole 41B is the same as the first distance D1 (see FIG. 2) described above, and the distance between the second hole 41B and the third hole 41C is the second distance described above It has the same size as D2 (see FIG. 3).

  The rails 42 are long members in the front-rear direction, and are fixed to the side portions of the seat cushion S1. The rail 42 has a length in the front-rear direction greater than that of the slider 41. A locking hole 42A is formed in a substantially central portion in the front-rear direction of the rail 42. The lock hole 42A faces the first hole 41A in the normal state shown in FIG. 6 (a), and faces the second hole 41B in the first cushion retracted state shown in FIG. 6 (b). It faces the third hole 41C in the second cushion retracted state shown in FIG.

  The lock mechanism 50 has a position of the seat cushion S1 with respect to the seat back S2, that is, a position of the seat cushion S1 with respect to the arm 10, a first position shown in FIG. 6A and a third position shown in FIG. And a mechanism for locking in the second position shown in FIG. Here, the first position is a position corresponding to the normal state. The second position is a position behind the first position and corresponds to the second cushion retracted state. The third position is a position between the first position and the second position, which is a position corresponding to the first cushion retracted state.

  The lock mechanism 50 includes a lock pin 51 and a compression coil spring 52 which is a biasing member. The lock pin 51 is engaged with the lock hole 42A of the rail 42 and the hole (for example, the first hole 41A) formed in the slider 41 and the retracted position out of the hole formed in the slider 41. It is movable. The compression coil spring 52 biases the lock pin 51 from the retracted position toward the engaged position. The compression coil spring 52 is provided between the lock pin 51 and the seat cushion frame.

  The lock pin 51 is connected to the lock release lever L2 via a wire W. The lock release lever L2 is rotatably provided on the front side of the lower surface of the seat cushion S1. The lock release lever L2 is pivotable between an initial position shown by a solid line in FIG. 6 (a) and a release position shown by a two-dot chain line in FIG. 6 (b). The lock release lever L2 is always urged to the initial position by a spring (not shown).

  Thus, when the occupant pulls the lock release lever L2, the lock pin 51 is moved from the engaged position to the retracted position against the biasing force of the compression coil spring 52. In addition, when the occupant releases the lock release lever L2, the lock pin 51 is moved from the retracted position to the engaged position by the biasing force of the compression coil spring 52.

  As shown in FIG. 6C, when the seat cushion S1 is located at the second position, that is, when the seat cushion S1 is disposed at the rearmost position, the seat cushion S1 protrudes forward from the seatback S2 The amount LF is larger than the backward protrusion amount LR. Here, the forwardly projecting amount LF refers to the distance from the intersection of the virtual line LA along the front surface of the seat back S2 and the top surface of the seat cushion S1 to the front end of the seat cushion S1. Further, the backward protrusion amount LR means the distance from the intersection point of the virtual line LB along the rear surface of the seat back S2 and the upper surface of the seat cushion S1 to the rear end of the seat cushion S1.

Next, an operation method of the vehicle seat S according to the present embodiment will be described.
In the normal state shown in FIG. 1, the rotation of the seat back S2 is restricted by the lock of the reclining mechanism 2 so that the seat back S2, the arm 10, the support member 20 and the base member 30 have three degrees of freedom with zero freedom Thus, the postures of the seat back S2, the arm 10 and the support member 20 are fixed. Further, since the seat cushion S1 is supported by the arm 10 whose attitude is fixed via the slide mechanism 40, the seat cushion S1 is maintained in the horizontal attitude.

  When switching from the normal state to the first cushion retracted state, the occupant first pulls the lock release lever L2 to release the lock by the lock mechanism 50. As a result, the lock pin 51 is disengaged from the first hole 41A (see FIG. 6A) of the slide mechanism 40, so the seat cushion S1 can slide rearward when the vehicle seat S is in the normal state. . Specifically, when in the normal state, the seat cushion S1 is configured to be slidable rearward with respect to the seat back S2, the arm 10, the support member 20, and the base member 30.

  As shown in FIG. 2, when the occupant moves the seat cushion S1 from the normal state by the first distance D1, as shown in FIG. 6 (b), the lock pin 51 on the seat cushion S1 side is the second on the arm 10 side. It faces the hole 41B. At this time, when the occupant releases the lock release lever L2, the lock pin 51 engages with the second hole 41B by the biasing force of the compression coil spring 52, so the seat cushion S1 is locked at the third position. . As a result, the vehicle seat S can be favorably maintained in the first cushion retracted state.

  When switching from the first cushion retracted state to the second cushion retracted state, the occupant unlocks the lock mechanism 50 in the same manner as described above, and the seat cushion S1 is moved by the second distance D2 as shown in FIG. Slide only backwards. Thereby, as shown in FIG. 6C, the lock pin 51 on the seat cushion S1 side faces the third hole 41C on the arm 10 side, so the seat cushion S1 is locked by the lock mechanism 50 at this position. , And the seat cushion S1 is locked in the second position. Thus, the vehicle seat S can be favorably maintained in the second cushion retracted state.

  The switching from the second cushion retracted state to the first cushion retracted state and the switching from the first cushion retracted state to the normal state may be performed in the reverse of the operation described above.

  As shown in FIG. 1, when switching from the normal state to the dive down state, the occupant first operates the reclining release lever L1 to release the lock by the reclining mechanism 2. As a result, the seat back S2, the arm 10, the support member 20, and the base member 30 become a four-node link with one degree of freedom, so when the seat back S2 is turned forward, along with the rotation of the seat back S2, The support member 20 gradually falls forward.

  When the occupant further tilts the seat back S2 while the support member 20 is tilted forward to some extent, the seat cushion S1 is pushed forward via the arm 10. As a result, since the support member 20 is pulled by the seat cushion S1 pushed forward, the end of the connecting member 21 slides forward in the support hole 31.

  When the end of the connecting member 21 abuts on the front end of the support hole 31 as shown in FIG. 4, the seatback S2 is folded down on the seat cushion S1 to be in a dive down state. In the dive down state, the reclining mechanism 2 may be in the locked state or in the unlocked state. However, when the reclining mechanism 2 is in the unlocked state in the dive down state, the operation of the reclining release lever L1 becomes unnecessary when switching from the dive down state to the normal state, so this configuration is preferable. .

  As described above, when switching from the normal state to the dive-down state, the arm 10 pivots clockwise around the second axis A2 as the seat cushion S1 moves forward. Therefore, the distance from the first axis A1 to the third axis A3 is larger in the dive down state than in the normal state or the cushion retracted state.

  Specifically, the positions of the axes A1 to A4 in the dive down state are as follows. The first axis A1 is disposed in front of and below the second axis A2 and in front of and above the fourth axis A4. The second axis A2 is disposed in front of and above the third axis A3 and in front of and above the fourth axis A4. The fourth axis A4 is disposed forward and downward of the third axis A3. The distance from the third axis A3 to the fourth axis A4 is larger in the dive down state than in the normal state or the cushion retracted state.

  When switching from the dive down state to the normal state, when the occupant raises the seat back S2, the seat cushion S1 is pulled rearward via the arm 10. As a result, since the support member 20 is pushed rearward by the seat cushion S1 pulled backward, the end of the connecting member 21 slides rearward in the support hole 31.

  Thereafter, as shown in FIG. 1, when the end of the connecting member 21 abuts on the rear end of the support hole 31, the support member 20 pivots upward about the fourth axis A4. Then, the seat back S2 is pivoted to a position where it can be locked by the reclining mechanism 2, and when the reclining mechanism 2 is locked at that position, the vehicle seat S is in the normal state.

The following effects can be obtained in the vehicle seat of the present embodiment as described above.
The space in front of the vehicle seat S can be expanded only by sliding the seat cushion S1 rearward from the normal state. Therefore, even a weak user can easily switch the state of the vehicle seat S from the normal state to the cushion retracted state in which the space in front can be effectively used.

  Since the seat cushion S1 is supported by the arm 10 provided on the seat back S2, the vertical position of the seat cushion S1 can be freely set simply by making the shape of the arm 10 L-shaped as in the embodiment, for example. Thus, the seat cushion S1 can be slid well without interfering with the seat back S2.

  Since the position of the seat cushion S1 is locked to the first position and the second position by the lock mechanism 50, the vehicle seat S can be favorably held in the normal state and the cushion retracted state.

  Since the seat cushion S1 can be locked at the first position, the second position and the third position by the lock mechanism 50, for example, an object can be held between the front end of the seat cushion S1 and the rear surface of the vehicle seat in front thereof. In the case of sandwiching, it is possible to increase the types of sandwiches.

  When the seat cushion S1 is positioned at the second position, the forward projection amount LF of the seat cushion S1 from the seat back S2 is larger than the rearward projection amount LR, so the space behind the seat back S2 is It is possible to secure a forward space while suppressing a reduction in size.

  Since the arm 10 can be rotated with respect to the seat back S2 when switching to the dive down state, switching to the dive down state can be favorably performed.

  When in the normal state, since the second portion 12 is located forward and downward of the portion of the first portion 11 connected to the seat back S2, switching to the dive-down state can be performed favorably.

  In the normal state, since the seat cushion S1 can slide rearward with respect to the support member 20, for example, the support member is provided on the seat cushion, and the seat cushion S1 is compared with a structure in which the support member moves with the seat cushion. The backward movement of can be done smoothly.

  In the first cushion retracted state shown in FIG. 2 and the second cushion retracted state shown in FIG. 3, since the seat cushion S1 is in a horizontal posture, luggage can be placed on the seat cushion S1. Further, in the first cushion retracted state and the second cushion retracted state, the length in the front-rear direction of the seat surface of the seat cushion S1 can be made smaller than that in the normal state. It can be of length.

  Although the embodiment of the present invention has been described above, the present invention can be appropriately modified and implemented as shown in the other embodiments below.

  In the above embodiment, when the seat cushion S1 is positioned at the second position, the forwardly projecting amount LF of the seat cushion S1 from the seatback S2 is larger than the rearward projecting amount LR, but the present invention The present invention is not limited to this, and the forward projection amount LF may be equal to or greater than the rearward projection amount LR. That is, the forward projecting amount LF and the rearward projecting amount LR may be the same.

  Although the seat cushion S1 is configured to be locked at three positions in the front-rear direction in the above embodiment, the present invention is not limited to this, and the seat cushion may be locked at four or more positions. That is, as the lock mechanism, one that can lock to the first position, the second position, and two or more positions set between the first position and the second position may be adopted. The lock mechanism may be configured to lock the seat cushion S1 only at the first position and the second position.

  In the above embodiment, the seat cushion S1 is slidably supported by the arm 10. However, the present invention is not limited to this. For example, the seat cushion may be slidably supported by the seat back frame.

  In the said embodiment, although the arm 10 was formed in the L-shape, this invention is not limited to this, The shape of an arm is arbitrary.

  Although the support member 20 is provided on the seat cushion S1 in the embodiment, the present invention is not limited to this, and the support member may be omitted. That is, the seat cushion may be configured to be supported only by the arm. In this case, for example, a member for restricting the rotation of the arm with respect to the seat back may be provided.

  In the embodiment, the sliding movement direction of the end portion of the connection member 21 is a direction inclined with respect to the front and rear direction, more specifically, a direction toward the lower front, but the present invention is not limited thereto. For example, it may be a direction along the front-rear direction or may be a direction toward the upper front.

  In the embodiment, the first axis A1 is disposed forward and downward of the second axis A2, but the present invention is not limited thereto. For example, the first axis is forward of the second axis, And the position of the 2nd axis and the up-and-down direction may be the same.

  In the embodiment, the reclining mechanism 2 serves as a restricting member that restricts rotation of the support member 20 relative to the base member 30 such that the upper end of the support member 20 approaches the third axis A3 when in the normal state. However, the present invention is not limited thereto. For example, the restricting member may be a mechanism that locks or releases the pivoting of the arm relative to the seat back, or may be a mechanism that locks or unlocks the pivoting of the support member relative to the arm, or the support relative to the base member It may be a mechanism for locking or releasing the rotation of the member. Further, the restricting member may be a mechanism (for example, a structure in which a latch mechanism provided on the seat back engages with a striker provided on the frame) or the like that locks or releases the seat back with respect to the frame of the vehicle.

  The position of each of the axes A1 to A4 in each state of the vehicle seat S is not limited to the above embodiment, and may be changed as appropriate.

  Although the vehicle seat S used in a car is illustrated as a vehicle seat in the above embodiment, the present invention is not limited to this, and other vehicle seats, for example, other vehicles such as ships and aircrafts It can also be applied to the sheets used.

  In addition, each element described in the above-described embodiment and modification may be implemented in any combination.

F floor S seat for vehicle S1 seat cushion S2 seat back 40 slide mechanism

Claims (8)

In the seat cushion and the seat back, the seat cushion is disposed closer to the floor than the normal state when an occupant is seated and the normal state, and the seat back is folded on the seat cushion. A vehicle seat that can be switched to the dive down state,
A seat for a vehicle, wherein the seat cushion is configured to be slidable rearward when in the normal state. It has an arm provided on the seat back,
The vehicle seat according to claim 1, wherein the seat cushion is slidably supported by the arm.   The lock mechanism which locks the position of the said seat cushion with respect to the said arm in the 1st position corresponding to the said normal state, and the 2nd position behind the said 1st position was provided. Vehicle seat.   The vehicle seat according to claim 3, wherein the locking mechanism locks the position of the seat cushion relative to the arm in at least one position between the first position and the second position.   5. The seat cushion according to claim 3, wherein an amount of forward projection of the seat cushion from the seat back is greater than or equal to an amount of backward projection when the seat cushion is at the second position. Vehicle seat as described in.   The vehicle seat according to any one of claims 2 to 5, wherein the arm is rotatably connected to the seat back. The arm has a first portion connected to the seat back and a second portion supporting the seat cushion.
The vehicle seat according to claim 6, wherein, in the normal state, the second portion is located forward and downward of a connecting portion of the first portion with the seat back. A base member rotatably supporting a lower end portion of the seat back frame;
And a support member rotatably connected to the arm to support the arm.
The vehicle according to any one of claims 1 to 9, wherein the seat cushion is configured to be slidable rearward with respect to the support member when in the normal state. Sheet.

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