JPH08230535A - Seat device for vehicle - Google Patents

Abstract

PURPOSE: To prevent the use of a seat within a seat movement range out of the requirement for the use of seat belt. CONSTITUTION: A rear seat 1 is moved on a slide rail 3B provided on a vehicle floor 4 and positioned at a specified position. Also its seat cushion 11 can be stored by tilting it to a seat back 12 side. The positioning point of the seat 1 is set in a seat moving range which meet the requirement for use of a seat belt 2, and a positioning point is set only at a position to which the seat cushion cannot be moved unless it is tilted in the seat moving range which does not meet the requirement for the use of the seat belt 2. Then the requirement for the use of the seat belt 2 is that a plane (a) which is crossed at right angle to the center plane of a vehicle and includes a hip point P3 and the mounting position of a fixing anchor 21 of the seat belt 1 comes within the range of an angle between 20 to 75 deg..

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat device, and more particularly to a seat device having a slide type seat capable of flipping up a seat cushion to the seat back side.

[0002]

2. Description of the Related Art In a van type RV (recreation vehicle) vehicle, the front,
There are often three rows of seats, middle and rear. In this case, the luggage compartment is located behind the rear seat, but there has been proposed a seat device in which the rear seat can be slid back and forth so that the size of the luggage compartment space can be adjusted depending on the amount of luggage (for example, actual opening). 63-179247). Further, Japanese Patent Publication No. 6-45322 discloses a seat device in which the seat cushion is flipped up to the seat back side when not in use and can be moved (stored) to immediately after the middle seat, so that a sufficient luggage compartment space can be secured. Has been done.

[0003]

By the way, in recent years, it has been required to equip all seats with seat belts in order to ensure the safety of passengers. In this case, in order to further improve the safety, a three-point type is also used for the rear seats. Seat belts are often provided. Such seat belts have severe usage conditions in order to exhibit their performance well. However, in each of the conventional sliding seat devices described above, when the seat is moved largely forward, the seat belt becomes a fixing point on the vehicle body side. There is a possibility that the relative distance from the anchor mounting position may change and the above usage conditions may not be satisfied. In particular, in a seat device in which the seat cushion is flipped up to the seat back side and the entire seat is moved (stored) forward to expand the luggage compartment space, the slide rail has a sufficient margin for forward movement. , There is a risk that the seat belt will be used beyond the range of seat movement that satisfies the usage conditions.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a vehicle seat device capable of preventing the use of a seat in a seat movement range outside the use condition of the seat belt.

[0005]

In the first structure of the present invention, it is possible to move on the slide rails 3A, 3B provided on the vehicle floor 4 and to position at a plurality of positioning points on the slide rails 3A, 3B. In addition, a seat device for a vehicle is provided which includes a seat 1 capable of flipping up the seat cushion 11 to the seat back 12 side, and a seat belt 2 of the seat 1 is attached to the body side. The seat 1 can be moved to each positioning point provided in the seat movement range satisfying the use condition by moving the seat cushion 11 in the used state, and the positioning point provided in the seat movement range outside the use condition of the seat belt 2. The movement of the seat 1 to the seat is provided with a movement restricting means 5 which allows the seat cushion 11 to be lifted up.

In the second structure of the present invention, the movement restricting means is the front seat 5 arranged on the front side of the seat 1.

[0007]

In the first structure described above, the seat 1 can be moved to each positioning point provided in the seat moving range satisfying the use condition of the seat belt 2 while the seat cushion 11 is being used, and the seat belt can be moved. The movement of the seat 1 to the positioning point provided in the seat movement range outside the use condition of No. 2 cannot be moved unless the seat cushion is flipped up by the movement restricting means 5. Therefore, there is no possibility that the seat 1 will be used beyond the seat movement range that satisfies the use condition of the seat belt 2, and safety is ensured.

In the above second structure, the movement restricting means can be easily realized by using the front seat.

[0009]

1 shows a rear seat of a van type vehicle to which the present invention is applied. The rear seat 1 is of a bench type having seats on the left and right, and the seat back 12 can be tilted to an arbitrary angle by an operation lever 122 of a known reclining mechanism. Further, the seat cushion 11 can be flipped up to the seat back 12 side by a mechanism described later by operating a lever handle 611 provided on the front side surface in the figure. Slide rails 3A, 3B are provided at the left and right positions of the vehicle floor 4 in the front-rear direction. Further, the rear seat 1 has a pair of left and right sliding brackets 13A and 13B that are moved by being guided by the slide rails 3A and 3B. By operating an operation lever 71 below the seat cushion 11, a positioning skill by a positioning mechanism described later is provided. It is possible to move back and forth by releasing.

Behind the rear seat 1 is a luggage compartment S, and outer side belts 2 constituting a three-point type seat belt are provided at left and right positions of a rear end of the vehicle. These outer belts 2 are pulled out upward from the retractor 22, folded back by the shoulder anchors 23, and fixed on the floor 4.
It has reached 1. The outer side belt 2 is provided with a tongue plate 24 in the middle thereof.
The occupant's body is held by being connected to the buckles 26 of the inner belts 25 provided on the left and right seats of the vehicle.

FIG. 2 shows the details of the flip-up mechanism of the seat cushion 11. In the figure, a shaft member 62 provided on the side panel 14 of the rear seat 1 is provided with a bracket 63 that supports a substantially rectangular upper end corner portion rotatably and faces downward. The rear end of the seat cushion 11 is fixed. In the bracket 63, a pin 631 provided at an intermediate position is fitted and positioned in a locking groove of a locking lever 65 pivotally attached to the side panel 14 by a shaft 64 so as to be positioned. Reference numeral 65 is biased clockwise in the drawing by a coil spring 66 stretched between a projecting piece 651 formed at the base end and a cut-and-raised piece 141 formed on the side panel 14.

An operation lever 61 whose base end is rotatably connected to the shaft member 62 and extends downward along the side panel 14.
Is provided, and the arcuate elongated hole 612 formed on the plate surface of the operation lever 61 is engaged with the pin 652 provided on the plate surface of the locking lever 65. The bracket 63 and the locking lever 65 are located inside the side panel 14, the operating lever 61 is located outside the side panel 14, and the pin 652 of the locking lever 65 penetrates the side panel 14. The long hole 612 of the operation lever 61 is engaged. For this reason,
An arcuate elongated hole centering on the shaft 64 is provided on the side panel 14 in the moving range of the pin 652 (not shown). When the seat cushion 11 is flipped up, when the lever handle 611 of the operation lever 61 is grasped and pushed down, the locking lever 65 pivots downward and the pin 631 of the bracket 63 locks the locking groove. Get out of. As a result, the bracket 63 (and the seat cushion 11) is rotatable, so that the seat cushion 11 can be lifted upward and rotated to a vertical posture. After that, when the lever grip 611 is released, the locking lever 65 returns to the original position, and in this state, another pin 632 provided at another corner of the bracket 63 is fitted into the locking groove of the locking lever 65. Positioned. Incidentally, reference numeral 121 in the drawing denotes a seat reclining mechanism.

3 and 4 show details of the mechanism for moving and positioning the rear seat 1. In FIG. 3, leg portions 111 and 112 provided at the front and rear of the seat cushion 11 are fixed to a sliding bracket 13B extending in the front-rear direction, and the sliding bracket 13B moves forward and backward along a slide rail 3B. That is, as shown in FIG. 4, the slide rail 3B has a substantially C-shape that opens upward, and the reverse T-shaped lower end of the sliding bracket 13B is inserted into the rail 3B together with the roller 31. A positioning plate 32 is provided along the rail 3B, and a locking hole 321 is provided in the positioning plate 32 at a predetermined position in the front-rear direction. The front end of a positioning shaft 72 provided on the sliding bracket 13B side is fitted into the locking hole 321 to position the rear seat 1.

The shaft 72 is biased downward by a coil spring 73 provided between the shaft 72 and the support piece 15. A stopper piece 74 is provided in the middle of the shaft 72,
The operation piece 75 is located close to and below the operation piece 75. The operation piece 75 is fixed to an operation shaft 76 (FIG. 3) extending below the seat cushion 11 toward the front of the vehicle, and the tip of the operation shaft 76 is bent at the front edge of the seat cushion 11 to form an operation lever 71. . Then, when the rear seat 1 is moved, when the operation lever 71 is rotated upward (a chain line in FIG. 4), the operation piece 75 causes the stopper piece 7 to move.
4, the positioning shaft 72 rises, and the locking hole 3
The engagement with 21 is released.

According to the seat device having such a structure, when there are many loads to be loaded, as shown in FIG.
1, the seat cushion 11 is flipped up, and the operating lever 71 is operated to move (retract) the rear seat 1 along the slide rails 3A and 3B to a position just behind the middle seat 5 to sufficiently store the luggage compartment S. After securing (FIG. 6), the luggage M can be loaded.

By the way, when sitting on the rear seat 1,
As described above, the occupant connects the tongue plate 24 of the outer side belt 2 to the buckle 26 of the inner side belt 25 (FIG. 1) and uses it as a three-point type seat belt as shown by the chain line in FIG. In this case, when the rear seat 1 is moved back and forth, the fixed anchor 2 which is the floor fixing point of the seat belt is moved.
The relative positional relationship with 1 changes. Here, according to the technical standard established by the Ministry of Transport, the hip point P is orthogonal to the vehicle center plane even when the rear seat 1 is in any adjustment position.
The plane a including 3 and the mounting position of the fixed anchor 21 is
It is necessary to install the fixed anchor 21 so that it is always within the angle range of 20 ° to 75 ° with respect to the horizontal plane b.
If the moving amount of the rear seat 1 is increased, this criterion will not be satisfied.

Therefore, in the present invention, the rear seat 1 is provided at a plurality of positions within the seat movement range that satisfies the above technical standards.
The locking hole 321 (FIG. 4) of the positioning plate 32 is set so that the can be positioned. In FIG. 7, this position is indicated by hip points P1 to P5. Further, in the seat movement range that does not satisfy the above technical standards, the locking hole 321 of the positioning plate 32 is set so that the rear seat 1 can be positioned only at two positions where the seat cushion 11 cannot be moved unless the seat cushion 11 is flipped up. This position is indicated by hip points P6 and P7. That is, the middle seat 5 is located in front of the rear seat 1, and the middle seat 5 constitutes a movement restricting means for the rear seat 1 in use. As a result, even if the rear seat 1 is used at any position shown by the hip points P1 to P5 in FIG. 7, the above technical standard is satisfied. On the other hand, at the positions shown by P6 and P7 in FIG. 7, the seat cushion 11 of the rear seat 1 is always flipped up and cannot be used as a seat. Thus, even if the movement amount of the rear seat 1 is increased, the above technical standard can be satisfied.

In the above embodiment, the middle seat 5 in use is constituted as the movement restricting means for the rear seat 1. However, as shown in FIG. 8, the middle seat 5 is lifted up by the seat cushion 51 like the rear seat 1. Alternatively, the middle seat 5 in the retracted state can be configured to be able to be stored in the front, and the middle seat 5 in the retracted state can also be configured as a movement restricting means for the rear seat 1.

[0019]

As described above, according to the vehicle seat device of the present invention, the use of the seat in the seat moving range outside the seat belt use condition is reliably prevented, and the safety is improved. To be

[Brief description of drawings]

FIG. 1 is a rear perspective view of a van-type vehicle provided with a rear seat to which the present invention is applied.

FIG. 2 is a side view of a seat cushion flip-up mechanism.

FIG. 3 is a side view of a sheet movement positioning mechanism.

FIG. 4 is a partial cross-sectional front view of the sheet movement positioning mechanism.

FIG. 5 is a rear perspective view of a van-type vehicle provided with a rear seat.

FIG. 6 is a side view of the rear seat when luggage is loaded.

FIG. 7 is a side view of the rear seat when the seat is used.

FIG. 8 is a side view of a rear seat of another embodiment.

[Explanation of symbols]

 1 Rear Seat (Seat) 11 Seat Cushion 12 Seat Back 2 Outer Belt (Seat Belt) 21 Fixed Anchor (Vehicle Side Fixed Point) 3A, 3B Slide Rail 4 Vehicle Floor 5 Middle Seat (Front Seat) P1 to P7 Hip Point

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Nobuhide Wago 1 395 Kaminodan, Kokubun City, Kagoshima Prefecture Toyota Auto Body Research Institute Co., Ltd.

Claims (2)

[Claims] 1. A seat, which is movable on a slide rail provided on a vehicle floor and can be positioned at a plurality of positioning points on the slide rail, and which is capable of flipping up a seat cushion to a seat back side, In a vehicle seat device in which a seat belt of the seat is attached to a body side, the seat cushion is used to move the seat to each positioning point provided in a seat moving range satisfying the use condition of the seat belt. You can move
The vehicle seat is characterized in that a movement restriction means is provided for allowing the seat cushion to move up to a positioning point provided in a seat movement range outside the use condition of the seat belt, assuming that the seat cushion is flipped up. apparatus. 2. The vehicle seat device according to claim 1, wherein the movement restricting means is a front seat provided on the front side of the seat.