JP4331082B2 - Vehicle seat structure - Google Patents

Description

  The present invention relates to a vehicle seat structure that can be stored when not in use.

  As a technology related to a vehicle seat structure that can be stored when not in use, one end is pivotally supported by a fixed portion fixed on the floor, and one end is pivotally supported by the other end of the first leg. The front part is pivotally supported by the second leg part and the other end of the second leg part, and the rear part is detachably engaged with the engaging part provided on the upper surface side of the deck part on the rear and upper side of the floor. The seat cushion and a seat back provided at the rear end portion of the seat cushion so as to be able to move forward, and the seat cushion is disengaged from the engagement portion from the use state in which the seat cushion is engaged with the engagement portion. By moving while being supported by the leg portion and the second leg portion, there is one that is dropped onto the floor in front of the deck portion together with the seat back that has been brought forward (for example, Patent Document 1). reference).

In addition, a leg part whose one end is pivotally supported by a slide part or a fixed part provided on the floor, and a front part is pivotally supported by the other end of the leg part, provided on the upper surface side of the deck part on the rear and upper side of the floor. A seat cushion having a rear portion detachably engaged with the engaged portion, and a seat back provided at a rear end portion of the seat cushion so as to be able to be moved forward. The seat cushion is engaged with the engaging portion. From the combined use state, it is removed from this engaging portion, supported by the leg portion, and moved, so that it is dropped onto the floor in front of the deck portion together with the seat back that has been brought forward, and is brought into the retracted state. There are some (see, for example, Patent Document 2).
Japanese Patent Laid-Open No. 11-32410 JP 2000-108744 A

  However, the one disclosed in Patent Document 1 has a large number of parts because the front part of the seat cushion is supported on the floor via the first leg part and the second leg part. Since the hook of the second leg portion has to be engaged with the engaging portion on the front surface of the deck portion so as not to be folded, there is a problem that it takes time to attach and detach. In addition, since the front part of the seat cushion is only pivotally supported with respect to the second leg part, the seat cushion moves back and forth while slightly swinging the second leg part due to acceleration and deceleration of the vehicle. This could cause the passengers to feel instability.

  Also, in the one disclosed in Patent Document 2 described above, since the seat cushion is only pivotally supported by the front portion with respect to the leg portion, the shaft portion is slightly slightly seated due to acceleration / deceleration of the vehicle or the like. The vehicle may move back and forth while swinging, causing the occupant to feel instability.

  Accordingly, an object of the present invention is to provide a vehicle seat structure that prevents the seat cushion from moving back and forth due to acceleration / deceleration of the vehicle and the like, and can give a sense of stability to the occupant.

In order to achieve the above-mentioned object, the invention according to claim 1 is a pair of left and right whose ends are pivotally supported by a fixing portion (for example, the fixing portion 52 in the embodiment) fixed on a floor (for example, the floor 31 in the embodiment). The front part is pivotally supported by the other leg part (for example, the leg part 53 in the embodiment) and the other end of the pair of left and right leg parts, and the deck part is higher than the floor behind the floor (for example, the storage box in the embodiment). 32) a seat cushion (for example, the seat cushion 20 in the embodiment) whose rear portion is detachably engaged with an engaging portion (for example, the striker 35 in the embodiment) provided on the upper surface (for example, the upper surface 32a in the embodiment) side. A seat back (for example, a seat back 21 in the embodiment) provided at the rear end portion of the seat cushion so as to be able to move forward. From the state of use engaged with the engaging portion, moved away from the engaging portion and supported by the leg portions, so that the front portion of the deck portion is moved forward along with the seat back that has been brought forward. A vehicle seat structure that is dropped onto a floor to be in a retracted state, and the seat cushion frame of the seat cushion (for example, the seat cushion frame 26 in the embodiment) is a pair of left and right disposed on both sides in the vehicle width direction. Side frame portions (for example, the side frame portion 40 in the embodiment) and an erection frame portion (for example, the erection frame portion 41 in the embodiment) that connects the front end portions of the pair of left and right side frame portions. , the lower surface (the lower surface 41a, for example in the embodiment) of the seat cushion frame when said pair of right and left leg portions in said use state Supporting portion (supporting frame part 59 in the example embodiment) is provided in contact with, the support portion, side projection of the left and right pair of side protrusions (e.g. Embodiment projecting forward from an upper portion of the pair of right and left leg portions Part 57) and a construction part (for example, construction part 58 in the embodiment) which connects the front end parts of the pair of left and right side projecting parts and abuts the lower surface of the construction frame part. It is said.

  The invention according to claim 2 is the invention according to claim 1, wherein, when in the retracted state, the support portion is placed on the floor and the rear portion of the seat cushion is placed on the fixed portion. Thus, the back surface of the seat back in the forward-turned state (for example, the back surface 21b in the embodiment) is set to be substantially the same height as the top surface of the deck portion.

  According to the first aspect of the present invention, one end is pivotally supported by the fixed portion on the floor and the other end is pivotally supported by the front portion of the seat cushion. Since the support portion that contacts the lower surface of the seat cushion in the use state engaged with the joint portion is provided, the seat cushion is pivotally supported by the leg portion in use and supported from the lower side by the support portion of the leg portion. The Therefore, the seat cushion can be prevented from moving back and forth due to acceleration / deceleration of the vehicle and the like, and a sense of stability can be given to the occupant.

  According to the second aspect of the present invention, when the seat cushion is in the retracted state, the support portion is placed on the floor and the rear portion of the seat cushion is placed on the fixed portion, so that the rear surface of the seat back in the forward-turned state. The front part of the seat cushion is used to determine the height of the back of the seat back in the retracted state at the front position of the floor, which is the foot position of the occupant seated in use. There is no need to provide a platform or the like to be placed, and the fixing portion can also be used as a platform for placing the rear portion of the seat cushion in order to determine the height of the back surface of the seat back. Therefore, there is nothing that obstructs the feet of a passenger seated in use, and the number of parts can be reduced.

  A vehicle seat structure according to an embodiment of the present invention will be described below with reference to the drawings.

  FIG. 1 is a side view showing a vehicle 11 to which the vehicle seat structure of the present embodiment is applied. In the vehicle interior of the vehicle 11, a first row seat 12 and a second row are arranged in order from the front in the vehicle front-rear direction. An eye sheet 13 and a third row sheet 14 are provided, and a cargo compartment 15 is provided further rearward of the third row sheet 14.

  The third row seat 14 includes a pair of side seats 16 (only one is shown in FIG. 1) arranged on both sides in the vehicle width direction, and the center shown in FIGS. This is a three-seat sheet having a sheet 17. The vehicle seat structure of the present embodiment is applied to the central seat 17 of the third row seat 14 provided immediately before the luggage compartment 15. Needless to say, the present invention can be applied to the side sheet 16, and more specifically, any sheet provided just before the luggage compartment 15 can be applied.

  The center seat 17 includes a seat cushion 20 that mainly supports a occupant of a seated occupant, a seat back 21 that is coupled to a rear end portion of the seat cushion 20 and mainly supports a back of the seated occupant, and a seat cushion of the seat back 21. The headrest 22 is provided on the side opposite to the seat 20 and supports the back of the occupant seated mainly.

  The seat cushion 20 of the central seat 17 includes a seat cushion pad 25 that has cushioning properties and supports the occupant's buttocks, and a seat cushion frame 26 that holds the seat cushion pad 25. The seat back 21 is rotatably supported via a rotation shaft 27 along the rear and upper vehicle width direction. The seat back 21 can be locked or reclined in a multi-stage rotation position by a reclining mechanism 29 including a rotation shaft 27, and the opposite side of the rotation shaft 27 is the vehicle longitudinal direction relative to the rotation shaft 27. The front surface 21a of the seat cushion 20 can be brought into a forward-turned state (a state indicated by a one-dot chain line shown in FIG. 4). Here, when in the forward-turned state, the seat back 21 has its back surface 21b along substantially horizontal.

  At the position where the central seat 17 is provided, a storage box (deck portion) 32 having an upper surface 32a at a position higher than the floor 31 by a predetermined amount is provided on the vehicle body side behind the floor 31 in the vehicle longitudinal direction. . The storage box 32 is provided in the luggage compartment 15, and includes a lid 33 that can be opened and closed and locked in a closed state.

  On the upper surface 32 a side of the lid 33 of the storage box 32, strikers (engagement portions) 35 are provided on both the left and right sides. These strikers 35 have a recess 36 that is recessed from the upper surface 32 a of the lid portion 33 in the vehicle width direction. It consists of a rod-shaped member that crosses the surface. The striker 35 is used as a handle when the lid 33 is opened and closed.

  As shown in FIG. 1, the seat cushion frame 26 of the central seat 17 includes a pair of side frame portions 40 disposed on both sides in the vehicle width direction and front end portions of the side frame portions 40 in the vehicle front-rear direction. It has a construction frame part 41 to be connected, and the rear end parts of the side frame parts 40 are connected by a connecting shaft 42 along the vehicle width direction to form a frame shape. Here, the front part of the pair of side frame parts 40 in the vehicle front-rear direction and the installation frame part 41 are formed by bending a single pipe.

  A lock mechanism portion 43 shown in FIG. 4 that can be attached to and detached from each striker 35 is provided at the lower portion of the rear end portion in the vehicle longitudinal direction of each side frame portion 40. Each of these lock mechanisms 43 has a concave portion 44 that is recessed upward and a claw portion 45 that can be advanced and retracted into the concave portion 44. 45 automatically locks. On the other hand, when an operation unit (not shown) is operated, the claw portion 45 is retracted from the recess 44 and the lock to the striker 35 is released.

  As shown in FIG. 1, a front portion in the vehicle longitudinal direction of the side frame portions 40 on both sides of the seat cushion frame 26 is connected to a connecting portion 48 a that connects the both side frame portions 40 to each other in the vehicle width direction. A pair of connecting portions 48b spaced in the vehicle width direction for connecting the portion 48a and the installation frame portion 41 in the vehicle longitudinal direction are attached, and a support bracket 49 is attached to the lower surface of the pair of connecting portions 48b. . These mounting brackets 49 are each provided with a support shaft 50 along the vehicle width direction.

  A fixing portion 52 is fixed in the vicinity of the storage box 32 on the floor 31, and a pair of leg portions 53 are shown in FIG. It is connected via a rotating shaft 54 along the vehicle width direction. Here, one end side of the leg portion 53 is pivotally supported by the rotation shaft 54 so as to be rotatable around an axis along the vehicle width direction with the position fixed to the fixed portion 52, that is, the floor 31.

  The other end sides of the leg portions 53 are connected to the mounting bracket 49 at the front portion of the seat cushion 20 via the support shaft 50. Here, the other end side of the leg portion 53 is pivotally supported by the support shaft 50 so as to be rotatable about an axis along the vehicle width direction with a fixed position with respect to the mounting bracket 49, that is, the seat cushion 20.

  Therefore, as shown in FIGS. 2 and 4, the seat cushion 20 of the central seat 17 is in a use state where the seat cushion 20 is engaged with the striker 35 on the upper surface 32a side of the storage box 32 in the lock mechanism portion 43 at the rear portion. The rear portion is supported by the striker 35, and the front portion is supported by a leg portion 53 that rises from the position of the rotation shaft 54 while slightly tilting rearward in the vehicle front-rear direction.

  And in the state which supports the seat cushion 20 in a use state in this way, a pair of side protrusions 57 that protrude forward in the vehicle front-rear direction from each leg 53 and the side portions are provided on the upper portions of both leg portions 53. A support frame portion (support portion) 59 having a construction portion 58 extending in the vehicle width direction for connecting the tip portions of the projecting portions 57 is fixed. When the seat cushion 20 of the central seat 17 is in the above-described use state, the support frame portion 59 is mainly a lower surface 41a of the erection frame portion 41 of the seat cushion frame 26 at the erection portion 58 different from the support shaft 50, that is, the seat. It contacts the lower surface of the cushion 20. The pair of side protrusions 57 and the erection portion 58 are formed by bending one pipe.

  When an operation unit (not shown) is operated, the seat back 21 of the central seat 17 is brought forward and the lock of the lock mechanism 43 of the seat cushion 20 to the striker 35 is released. When the seat cushion 20 is moved forward together with the seat back 21 in a state of being removed from the striker 35 as described above, the front portion of the seat cushion 20 is supported by the leg portion 53 and is pivoted. As shown in FIG. 5, the seatback 21 is finally brought down onto the floor 31 in front of the storage box 32 together with the seatback 21 in the forward-turned state to be stored.

  When the central seat 17 is in the retracted state in this way, the support frame portion 59 is positioned below the front portion of the seat cushion 20 in the vehicle front-rear direction and protrudes downward from the leg portion 53. And placed on the floor 31 at the erection portion 58 on the front end side. A contact portion 60 extending from the connecting shaft 42 at the rear portion of the seat cushion frame 26 is placed on the fixed portion 52. Here, in the retracted state, the back surface 21 b of the seat back 21 in the center seat 17 is substantially flush with the upper surface 32 a of the storage box 32.

  According to the vehicle seat structure of the present embodiment described above, one end is pivotally supported by the fixed portion 52 on the floor 31 and the other end side is pivotally supported by the front portion of the seat cushion 20. As shown in FIGS. 2 and 4, there is provided a support frame portion 59 that contacts the lower surface 41 a of the erection frame portion 41 of the seat cushion 20 when the seat cushion 20 is engaged with the striker 35 of the storage box 32. In the use state, the seat cushion 20 is supported by the leg portion 53 by the support shaft 50 and supported by the support frame portion 59 different from the support shaft 50 of the leg portion 53 from below. Therefore, the seat cushion 20 can be prevented from moving back and forth due to acceleration / deceleration of the vehicle 11 and the like, and a sense of stability can be given to the occupant.

  Further, when in the retracted state, the support frame portion 59 is placed on the floor 31 and the rear portion of the seat cushion 20 is placed on the fixed portion 52, so that the back surface 21b of the seat back 21 in the forward-turned state can be removed. A seat cushion for determining the height of the back surface 21b of the seat back 21 in the retracted state at the front side position of the floor 31 which is the foot position of the occupant seated in the used state so as to be substantially the same height as the upper surface 32a of the storage box 32. It is no longer necessary to provide a pedestal for placing the front part of the seat 20, and the pedestal for placing the rear part of the seat cushion 20 in order to determine the height of the back surface 21b of the seat back 21 in the retracted state. Can be used together. Therefore, there is nothing that obstructs the feet of a passenger seated in use, and the number of parts can be reduced.

  Further, the central seat 17 can be easily changed between the use state and the retracted state simply by attaching / detaching the lock mechanism 43 at the rear portion of the seat cushion 20 to the striker 35 with one hand and moving the seat back 21 with the other hand.

  In addition, since the leg portion 53 and the fixing portion 52 are provided below the central seat 17, space efficiency is good. Further, when the central seat 17 is in the retracted state, the leg portion 53 and the fixing portion 52 are hidden under the central seat 17 so that the appearance is improved.

  As shown in FIG. 6, the upper portion of the leg portion 53 is pivotally supported via a support shaft 50 on a protruding portion 61 that protrudes downward from the front portion of the side frame portion 40 of the seat cushion frame 26 in the longitudinal direction of the vehicle body. You may make it let it. In this case, when the seat cushion 20 is in the above-described use state, the support frame portion 59 similar to the above is attached to the vehicle from the upper end portion of the leg portion 53 so as to contact the lower surface 41a of the erection frame portion 41 of the seat cushion frame 26. It is possible to project forward in the front-rear direction. Also in this case, the support frame portion 59 comes into contact with the floor 31 in the retracted state as shown in FIG.

Further , as shown in FIG. 8, as shown in FIG. 8, a leg portion is provided via a support shaft 50 on a protruding portion 61 that protrudes downward from the front portion of the side frame portion 40 of the seat cushion frame 26 in the longitudinal direction of the vehicle body. When the seat cushion 20 is in the above-described use state when the upper portion of the seat 53 is pivotally supported, the support portion is caused to protrude from the support shaft 50 forward in the vehicle front-rear direction to the leg portion 53 and contact the lower surface 41a of the installation frame portion 41. 63 may be formed, and the lower end of the portion extending downward from the tip of the support portion 63 may be pivotally supported on the fixed portion 52 via the rotation shaft 54. In this case, in the retracted state as shown in FIG. 9, the end portion of the support portion 63 of the leg portion 53 opposite to the support shaft 50 comes into contact with the floor 31.

1 is a side view of a vehicle to which a vehicle seat structure according to an embodiment of the present invention is applied. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a vehicle seat structure according to an embodiment of the present invention and shows a use state. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a vehicle seat structure according to an embodiment of the present invention, showing a stored state. It is a side view showing the vehicular seat structure of one embodiment of the present invention, and shows a use state. It is a side view showing the vehicular seat structure of one embodiment of the present invention, and shows a storing state. It is a side view which shows the modification of the vehicle seat structure of one Embodiment of this invention, Comprising: A use condition is shown. It is a side view which shows the modification of the vehicle seat structure of one Embodiment of this invention, Comprising: The storage state is shown. It shows the use state is a side view showing a seat structure for a vehicle reference technology. It shows a storage state is a side view showing a seat structure for a vehicle reference technology.

Explanation of symbols

20 Seat cushion 21 Seat back 21b Rear 31 Floor 32 Storage box (deck part)
32a upper surface 35 striker (engagement part)
41a Lower surface 52 Fixed portion 53 Leg portion 59 Support frame portion (support portion)
63 Supporting part

Claims (2)

A pair of left and right legs, one end of which is pivotally supported by a fixed part fixed on the floor;
A seat having a front portion pivotally supported at the other ends of the pair of left and right legs, and a rear portion detachably engaged with an engagement portion provided on the upper surface side of the deck portion higher than the floor behind the floor. Cushion,
A seat back provided in a rear end portion of the seat cushion so as to be able to move forward,
The seat cushion is moved from the engaged state engaged with the engaging portion to the front portion of the deck portion together with the seat back that has been brought forward by being moved away from the engaging portion and supported by the leg portion. A vehicle seat structure that is dropped onto the floor and placed in a retracted state,
The seat cushion frame of the seat cushion has a pair of left and right side frame portions disposed on both sides in the vehicle width direction, and an erected frame portion that connects the front end portions of the pair of left and right side frame portions,
The pair of left and right legs are provided with support portions that contact the lower surface of the seat cushion frame when in the use state ,
The support part connects a pair of left and right side protrusions protruding forward from the upper part of the pair of left and right legs, and front ends of the pair of left and right side protrusions, and is attached to a lower surface of the installation frame part. A vehicular seat structure characterized by having an abutting construction part .   When in the retracted state, the support portion is placed on the floor and the rear portion of the seat cushion is placed on the fixed portion, so that the back surface of the seat back in the forward-turned state is placed on the deck portion. The vehicle seat structure according to claim 1, wherein the vehicle seat structure has substantially the same height as the upper surface of the vehicle.

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