JP2002337576A - Slide seat of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slide seat of a vehicle to which a large seat belt load can be surely applied without a large-diameter heavy reinforcement pipe. SOLUTION: Seat legs 16, 17 at both ends in the cross direction of a seat back frame 1 are slidably placed on upper rails 41 movably provided along lower rails 42 disposed in parallel on a vehicle floor F. An auxiliary leg is provided in the middle position in the cross direction of a seat back frame 1, and a striker 19 is projected on the lower surface. An auxiliary lower rail 51 is disposed in the middle position between the right and left lower rails 42 in parallel thereto, and an auxiliary upper rail 52 is provided movably along it. The auxiliary upper rail 52 is provided with a latch plate 61 engaging with the striker 19 to be freely engaged and disengaged with and from it. An operating knob is operated to release the engagement of the latch plate 61 with the striker 19.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slide seat for a vehicle, and more particularly to an improvement in the structure of a slide seat capable of reducing an amount of deformation due to a seat belt load.

[0002]

2. Description of the Related Art FIGS. 6 and 7 show a conventional slide seat for a vehicle. As shown in FIG. 6, the slide seat 7 is a bench type which is long in the vehicle width direction, and has a seat body 70.
And a slide device 71 provided on the vehicle floor F and slidably supporting the seat body 70. The seat body 70 includes a support base 72, and a seat cushion 73 and a seat back 74 fixed to the support base 72. As shown in FIG. 7, the seat cushion 73 includes a seat cushion frame 731, and the seat back 74 includes a seat back frame 741.
The support base 72 includes a pair of left and right seat legs 75 and both seat legs 75 to which both left and right ends of the seat cushion frame 731 and the seat back frame 741 are fixed.
And a reinforcement 76 interposed therebetween. An anchor fixing portion 761 to which a seat belt anchor is fixed is formed at a widthwise intermediate portion of the reinforcement 76.

The slide device 71 includes a pair of left and right lower rails 77 fixed to the vehicle floor F and extending parallel to each other.
A pair of right and left upper rails 78 are slidably fitted to the lower rails 77 and are fixed to the seat legs 75.

In the above-mentioned conventional vehicle slide seat, when a large load is applied to the seat belt such as at the time of a vehicle collision, the load is transmitted from the anchor fixing portion 761 to the seat leg 751 via the reinforcement 76. In a bench-type seat such as a vehicle slide seat, since the distance between the anchor fixing portion 761 and the seat leg 75 is large, the reinforcement 76
There is a problem that the deformation amount of No. 1 is large.

Further, as a slide sheet for a vehicle which solves this problem, there is one disclosed in Japanese Patent Application Laid-Open No. 7-223506. This slide seat is a bench-type slide seat as described above, in which a load receiving rail extending along the lower rail is provided between the left and right lower rails on the vehicle floor, and the slider is slidable along the load receiving rail. , And the widthwise intermediate portion of the seat cushion frame is connected to the slider via a link. According to this slide seat, since the seat cushion frame is connected to the slider near the anchor fixing portion, the amount of deformation of the seat cushion frame can be reduced.

[0006]

However, Japanese Patent Application Laid-Open No. Hei 7-2
The vehicle slide seat described in Japanese Patent No. 23506 has a problem that the linking operation is difficult because the link is connected to the seat cushion frame and the slider by a bolt and the connection portion is located below the seat cushion. was there.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a slide seat for a vehicle in which the amount of deformation of the seat body due to a large load applied to the seat belt can be reduced and the operation of assembling the seat body is easy.

[0008]

In order to achieve the above object, according to the present invention, an upper rail (41) movably moves along a pair of lower rails (42) disposed in parallel on a vehicle floor (F). Together with the upper rail (41)
A vehicle slide seat in which both ends in the width direction of the seat body (1) are placed on the upper side and the seat body (1) is slidable along the vehicle floor (F). An auxiliary lower rail (51) extending parallel to the lower rail (42) is provided between the pair of lower rails (42), and the auxiliary lower rail (51) is provided.
An auxiliary upper rail (52) is provided movably along
When the seat body (1) is disposed at a predetermined position with respect to the auxiliary upper rail (52) between the auxiliary upper rail (52) and the widthwise intermediate portion of the seat body (1), the automatic operation is performed to connect the two. Means (19, 61, 62) are provided. Here, as the coupling means, a striker (19) provided on one of the auxiliary upper rail (52) and the seat body (1), and a striker (19) provided on the other of the auxiliary upper rail (52) and the seat body (1), When the seat body (1) is disposed at a predetermined position with respect to the auxiliary upper rail (52), a latch (61) displaced by the striker (19) to an engagement position for engaging with the striker, and the auxiliary upper rail (52). And a pole (62) provided on the other side of the seat body (1) and engaged with the latch (61) so as to hold the latch (61) in the engaged position when the latch (61) is displaced to the engaged position. May be provided.

In the first aspect of the present invention, the two members are automatically connected only by disposing the seat body at a predetermined position with respect to the auxiliary upper rail by the connecting means. When the seat body is slid, the auxiliary upper rail connected to the seat body moves along the auxiliary lower rail in accordance with the movement of the seat body. Is maintained. In addition, the seat belt load at the time of a vehicle collision etc. is transmitted from the anchor fixing portion to a part of the seat body and transmitted to the auxiliary upper rail. Can be reduced. In addition, since the connection of the seat body to the auxiliary upper rail is automatically performed by the connecting means, the work of assembling the seat body is easy. .

In the second invention, the seat body (1) is lowered on the auxiliary upper rail (52) and the seat body (1) is arranged at a predetermined position with respect to the auxiliary upper rail (52). Connecting means (19, 61, 6)
2) operates.

In the second aspect of the present invention, the auxiliary upper rail is disposed at a predetermined position with respect to the upper rail,
By mounting the seat body on the upper rail, the seat body and the auxiliary upper rail are automatically coupled, so that the work of assembling the seat body is easy.

In the third invention, the seat body (1) or the auxiliary upper rail (52) is slid along the lower rail (42) to dispose the seat body (1) at a predetermined position with respect to the auxiliary upper rail (52). By doing
The coupling means (19, 61, 62) operate.

In the third aspect of the present invention, the seat body and the auxiliary upper rail are automatically connected by sliding the seat body or the auxiliary upper rail with the seat body mounted on the upper rail. Assembly work is easy.

The reference numerals in parentheses indicate the correspondence with the specific means described in the embodiments described later.

[0015]

FIG. 1 shows a frame structure of a slide sheet according to an embodiment of the present invention. The slide sheet includes a seat body and a slide device as in the case of the related art described with reference to FIG. 6, and the seat body includes a support base, a seat cushion, and a seat back. As shown in FIG. 1, the seat cushion includes a seat cushion frame 3, and the seat back includes a seat back frame 1. In addition, the seat back frame 1 includes vertical frames 11, 12, and 13 that are disposed at both left and right ends and substantially in the center in the width direction and extend in the vertical direction.
And an upper horizontal frame 141 connecting the upper ends of the vertical frames 11, 12, and 13, and a vertical frame 11.12.13.
And a lower horizontal frame 142 that connects the vicinity of the lower end. Right end vertical frame 11 and center vertical frame 12
Is a closed cross-section structure in which two plates are abutted.
Further, the vertical frame 13 at the left end has a closed cross-section structure in which only two lower bodies are abutted at the lower end. A belt winding device 15 from which a three-point seat belt B (FIG. 3) at the center seat is pulled out is installed at a portion of the lower horizontal frame 142 near the vertical frame 12.

[0016] The support base is composed of left and right vertical frames 11,13.
Seat legs 16 and 17 joined to the center frame and auxiliary legs 18 joined to the central vertical frame 12 and extending in the front-rear direction;
The front side frame 22 connecting the front ends of the seat legs 16 and 17 and the auxiliary legs 18 and the seat legs 16 and 17
And a rear side frame 21 connecting the rear ends of the auxiliary legs 18. The auxiliary leg 18 has a closed cross-sectional structure in which two plates are abutted, and has an L-shape in side view. The seat leg 16 and the auxiliary leg 18 have their rear side tops connected to the lower ends of the vertical frames 11 and 12 of the seat back frame 1 via a known reclining mechanism 23. The lower end of the vertical frame 13 is the seat leg 1.
7 is rotatably connected to the rear top. The rear ends of both sides of the seat cushion frame 3 are joined to the front tops of the left and right seat legs 16, 17. Auxiliary leg 1
8 is provided with an anchor fixing portion to which one end of the seat belt of the central seat is connected, and between the auxiliary leg 18 and the seat leg 17, the intermediate portion of the seat belt of the central seat is engaged with the rear lateral frame 21. An anchor fixing portion for connecting the detachable buckle is provided.

The slide device 4 includes a pair of left and right lower rails 42 fixed to the vehicle floor F and extending in parallel with each other, and fitted to the lower rails 42 to seat legs 16 and 17.
And a pair of left and right upper rails 41 to which are fixed. On the vehicle floor F between the left and right slide devices 4, an auxiliary slide device 5 is disposed below the auxiliary leg 18. The auxiliary slide device 5 includes an auxiliary lower rail 51 extending parallel to the lower rail 42, and an auxiliary upper rail 5 movably fitted to the auxiliary lower rail.
2 is provided. As shown in FIG. 2, the auxiliary lower rail 51 has a substantially U-shaped cross-sectional shape that opens upward, while the auxiliary upper rail 52 includes a top plate 521 that extends substantially horizontally,
The upper end is coupled to the central lower surface of the top plate 521, and a pair of side plates 522 extending downward in parallel with each other, a shaft 53 penetrating the side plate 522, and mounted on both ends of the shaft 53 so as to be able to roll in the auxiliary lower rail 51. And a roller 54.

A connecting means for connecting the seat body and the auxiliary upper rail 52 is provided between them. The connecting means will be described below. On the lower surface of the rear end of the auxiliary leg 18 (FIG. 3), a striker 19 in which a rod is bent in a U-shape protrudes downward. The striker 19 has an opening 52 formed in the top plate 521 of the auxiliary upper rail 52.
3 and is engaged with a latch 61 described later.
The center of the lower end of the latch 61 is rotatably connected along the side plate 522 between the side plates 522 (FIG. 2) of the auxiliary upper rail 52 by a shaft 55. Further, a recess 612 that opens in a direction perpendicular to the opening direction of the opening 523 (FIG. 4) is formed in the upper part of the latch 61, and the recess 6
The lower end of the striker 19 is engaged with the inside of the frame 12. The latch 61 is urged by a spring member (not shown) in a direction to release the engagement with the striker 19. The latch 61 has an engagement projection 613 formed therein.
The engaging projection 613 engages with a pole 62 described later provided adjacent to the latch 61 to prevent the latch 61 from rotating in the direction of disengaging the striker 19 and lock. In addition, the striker 19 is opened 5 in the latch 61.
When inserted into the striker 19, the operation arm 65 which is pushed down by the striker 19 and thereby rotates the latch 61 in a direction engaging with the striker 19 is connected.
The operation arm 65 has a base end rotatably coupled to the shaft member 56 and a distal end rotatably coupled to a lower end plate surface of the latch 61 by a pin body 652. A contact portion 651 is formed on the top surface of the distal end of the operation arm 65.
The lower end of the striker 19 abuts on 1 and pushes it down.

The lower end of the pole 62 is supported by a shaft member 56 provided on the auxiliary upper rail 52.
Are rotatably supported between the side plates 522 along the side plate 522, and are urged to rotate in a direction of engaging with the latch 61 by a spring member (not shown). An engaging recess 62 that engages with the engaging projection 613 of the latch 61 is provided on the upper portion of the pawl 62.
1 is formed. Also, the pole 62 has a pole 6
Disengagement means for releasing the engagement between the latch 2 and the latch 461 is connected. Hereinafter, the engagement release means will be described. The rear end of the operating rod 63 is connected to the upper end of the pole plate 62, and the front end of the operating rod 63 is connected to a lock release lever (not shown) provided in the front end of the auxiliary upper rail 52. An operation knob 64 is provided at one end of the lock release lever. Operation knob 64 (FIG. 3)
Are exposed on the top plate 521 of the auxiliary upper rail 52. Note that a resin cover 57 is placed on the top plate 521 of the auxiliary upper rail 52, and the operation knob 64 of the lock release lever is connected to a cover opening 571 formed in the cover 57.
And cannot be operated normally because the lid 572 is closed. Also, the cover 57
An opening 573 having the same shape as that of the opening 523 provided in the top plate 521 of the auxiliary upper rail 52 is formed at the rear end portion.

In the slide seat having such a structure, the load applied to the seat belt in the center seat at the time of a vehicle collision or the like is transmitted from the vertical frame 12 or the rear horizontal frame 21 to the auxiliary leg 18 connected thereto. Since the striker 19 on the lower surface of the auxiliary leg 18 is engaged with the latch 61 provided on the auxiliary upper rail 52, the seat belt load is applied from the auxiliary upper rail 52 to the auxiliary lower rail 51 and the vehicle via the striker 19 and the latch 61. It is transmitted to floor F. In this manner, the load on the seat belt B of the occupant in the center is mostly transmitted from the auxiliary leg 18 provided at an intermediate position between the left and right seat legs 16 and 17.
The power is transmitted directly to the vehicle floor F via the auxiliary upper rail 52 and the auxiliary lower rail 51. Since the anchor fixing portion and the belt winding device at the center seat are close to the auxiliary leg, deformation of the seat is small. Further, since the ratio of transmission of the lateral frames 21 and 22 connecting the left and right seat legs 16 and 17 with the load of the seat belt of the central seat is small, the lateral frames 21 and 22 can be made small in diameter and lightweight. It is not necessary to use a large diameter and heavy reinforcement such as

When the seat body is moved along the slide rail 4, the auxiliary upper rail 52 moves along the auxiliary lower rail 51 with the movement of the seat body because the latch 61 is engaged with the striker 19. Therefore, the engagement state between the latch 61 and the striker 19 is maintained and the seat belt load is reliably received regardless of the position where the seat body is moved. When it is necessary to remove the seat body for repair or the like, the bolt connection between the left and right seat legs 16, 17 and the upper rail 41 is released, and then the cover 572 of the cover 57 (FIG. 3) is opened and the operation knob 64 is moved forward. Then, the pawl plate 62 is rotated in the forward tilt direction, and the engagement between the engagement recess 621 and the engagement protrusion 613 of the latch 61 is released. If the seat body is lifted in this state, the latch 61 is tilted and rotated in accordance with the upward movement of the striker 19 (FIG. 5), and the recess 612 of the latch 61 is formed.
, The striker 19 is pulled out, and the seat body can be removed. When the striker 19 and the latch 61 are to be engaged again, the auxiliary upper rail is moved to an appropriate position aligned with the left and right upper rails, and the left and right seat legs 16 and 17 are lowered so as to be placed on the upper rail 41. The lower end of 19 abuts on the contact portion 651 of the operation arm 65 and pushes it down. As a result, the latch 61 is rotated to the upright posture (FIG. 4) and the recess 6
The lower end of the striker 19 enters into and engages with the
The first engaging projection 613 enters the engaging recess 621 of the pawl 62 to enter the engagement state shown in FIG.

In the above embodiment, the seat body, that is, the striker is lowered to be engaged with the latch. However, the striker on the lower surface of the auxiliary leg is provided in a horizontal position, and the latch in the auxiliary rail is moved from the horizontal direction. If the arrangement is such that the striker to be inserted is received and engaged with the striker, the striker and the latch are engaged by sliding the sheet body placed between the upper rails or by sliding the auxiliary upper rail. be able to.

[0023]

As described above, according to the slide seat for a vehicle of the present invention, the amount of deformation of the seat body due to a large load applied to the seat belt can be reduced, and the assembling work of the seat body is easy.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a seat frame of a slide seat, showing one embodiment of the present invention.

2 is a cross-sectional view of an auxiliary slide rail, taken along the line II- in FIG.
FIG. 2 is a sectional view taken along line II.

FIG. 3 is a perspective view of an auxiliary leg engaged with an auxiliary upper rail.

FIG. 4 is a longitudinal sectional view of a main part of an auxiliary slide rail.

FIG. 5 is a longitudinal sectional view of a main part of an auxiliary slide rail.

FIG. 6 is a partial perspective view of a slide sheet.

FIG. 7 is an exploded perspective view of a seat frame of a conventional slide sheet.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Seat back frame, 19 ... Striker, 4 ... Slide rail, 41 ... Upper rail, 42 ... Lower rail, 51 ... Auxiliary lower rail, 52 ... Auxiliary upper rail,
61: latch, 62: pole, 64: operation knob, F: vehicle floor.

Claims (4)

[Claims] An upper rail is provided so as to be movable along a pair of lower rails arranged in parallel on a vehicle floor, and both widthwise ends of a seat body are placed on the upper rail. In a slide seat of a vehicle slidable along a vehicle floor, an auxiliary lower rail extending parallel to the lower rail is provided between the pair of lower rails on the vehicle floor, and the auxiliary lower rail extends along the auxiliary lower rail. A connecting means for automatically operating when the seat body is disposed at a predetermined position with respect to the auxiliary upper rail between the auxiliary upper rail and the intermediate portion in the width direction of the seat body; A slide seat for a vehicle, comprising: 2. The connecting means, wherein: a striker provided on one of the auxiliary upper rail and the seat main body; and a striker provided on the other of the auxiliary upper rail and the seat main body, wherein the seat main body is fixed with respect to the auxiliary upper rail. When the latch is displaced to the engaging position, the latch is provided on the other of the auxiliary upper rail and the seat body, and the latch is displaced to an engaging position by which the striker engages with the striker. And a pawl that engages with the latch to hold the latch in an engaged position. 3. The coupling means according to claim 1, wherein the seat body is lowered onto the auxiliary upper rail and the seat body is positioned at a predetermined position with respect to the auxiliary upper rail, whereby the coupling means is operated. Vehicle slide seat. 4. The connecting means is operated by sliding the seat body or the auxiliary upper rail along the lower rail and disposing the seat body at a predetermined position with respect to the auxiliary upper rail. Item 3. A slide seat for a vehicle according to item 2.