JPS6359890B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vehicle seat, and more particularly to the structure of a frame of a seat with a reclining device.

Conventionally, a seat A of an automobile, etc., which has a slide adjuster and a reclining device for adjusting the inclination angle of the backrest has a slide adjuster C and a reclining device D assembled to a bottom frame B of the seat as shown in FIG. Therefore, the rear load on the seat is applied to the slide adjuster C via the back frame E, the reclining device D, and the bottom frame B, and it is necessary to maintain the strength of all of these parts, especially the bottom frame. Since B is easily deformed, it not only requires a reinforced structure, but also has the problem of increasing the load on the frame.

An object of the present invention is to eliminate the above-mentioned problems and provide a seat for constructing a lightweight and solid seat.

To achieve the above object, the vehicle seat according to the present invention includes a seat adjuster comprising a lower rail fixed to the vehicle floor side and an upper rail into which the lower rail is slidably inserted, and an upper rail of the seat adjuster. It consists of a bracket fixed together with the seat frame on the side, and a reclining device attached to this bracket. A locking device for locking the upper rail to the lower rail is provided, and the bracket is provided with a U-shaped support portion into which the outer side of the upper rail and the engaging portion are fitted to fix the reclining device. It is what it is.

Therefore, the impact load applied to the back frame is transmitted from the reclining device to the seat adjuster via the bracket. At that time, a force acts to separate the upper rail of the seat adjuster from the lower rail, but the inner side of the upper rail is locked by the locking device, and the outer side is locked together with the engaging part extending in a partial direction of the lower rail. Since the upper rail is fitted into the U-shaped support part to improve peel strength, deformation of the upper rail is prevented. Therefore, the upper rail does not separate from the lower rail due to the impact load applied to the back frame.

Embodiments of the present invention will be described below with reference to FIGS. 2 to 4.

FIG. 2 is a schematic diagram of the present invention, in which a bottom frame B and a reclining device D are attached to the slide adjuster shown in C in the figure, and a back frame E is supported via the reclining device D. .

To explain this in detail with reference to FIGS. 3 and 4, the slide adjuster C slides between the lower rails 1 and 2 fixed on the vehicle floor via fixing brackets 3a, and the lower rails 1 and 2 inside. It is composed of upper rails 4 and 5 that are movably inserted into the upper rails.

Then, the lower rails 1 and 2 are bent into a U-shape, and the fixing bracket 3 is fixed with the opening facing upward.
a, 3b, 3c, and 3d, and the left and right opening edges have locking portions 11' bent horizontally outward,
11' are integrally extended. Further, a large number of engagement holes 16, 16, . . . are bored in the inner wall of the lower rail 1 at regular intervals in the length direction.

Above upper rails 4 and 5 are lower rail 1,
2 is bent into a U-shape so as to fit inside, with its opening facing downward, and the opening edge is integrally formed with engaging parts 41, 41 bent horizontally inward. The engaging portions 41, 41 are disposed opposite to the locking portions 11', 11' of the lower rails 1, 2.
The inner wall of the lower rail 1 is provided with a through hole through which a stopper 15 is inserted.

Further, a bracket 6 is fastened to the inner upper surface of the substantially rear half of the one upper rail 4 together with the seat frame 10 by bolts 11. 11a in the figure
is a nut fixed to the seat frame 10.

This bracket 6 is integrally formed with a U-shaped support portion 6b so as to fit between the outer surface side of the upper rail 4 and an engaging portion 41 that is integrated with the outer surface. device 8
The base portion 8a of is fastened with bolts 7, 7 and nuts 7a, 7a. Further, on the front side of this bracket 6, there is provided a mounting portion 6a that extends integrally with the inner surface side of the upper rail 4. 8b in the diagram
8c represents an arm portion of the reclining device 8, and 8c represents an operating lever thereof. A back frame 17 is fixed to the arm portion 8b.

On the other hand, a hinge bracket 9 is erected on the rear end surface side of the other upper rail 5, and the other end side of the back frame 17 is rotatably pivoted to this hinge bracket 9. In the figure, 17a is a hinge pin, 9
a indicates a mounting hole into which the hinge pin 17a is inserted.

In the figure, reference numeral 10 denotes a rectangular bottom frame, and bolts 11 and 1 protrude from both upper rails 4 and 5 into mounting holes drilled in each peripheral frame 10a.
1... are inserted and screwed and fixed by nuts 11a, 11a... to integrate the upper rails 4, 5 and the bottom frame 10.

Reference numeral 12 designates a locking device for the slide adjuster, and an operating lever 14 for unlocking is pivotally mounted at one end via a pin 13 to a mounting portion 6a protruding inwardly from the bracket 6. An engaging protrusion 15 integrally protruding from the operating portion is configured to selectively engage one of the numerous engaging holes 16, 16, . . . of the lower rail 1 from the through hole of the upper rail 4.

Therefore, when the lock release operation lever 14 is operated, the engagement protrusion 15 engages the engagement hole 16 of the lower rail 1.
In order to escape from the seat, the upper rail 4 becomes slidable in the front-rear direction, and the front-rear position of the seat is adjusted. After the adjustment, the engaging protrusion 15 is inserted into the engaging hole 16 of the lower rail 1 from the through hole of the upper rail 4.

In addition, the operating lever 8 of the reclining device 8
By operating c, the inclination angle of the back frame 17 with respect to the seat frame 10 can be adjusted.

In this way, the impact load applied to the back seat is transmitted from the bracket 6 fixed to the slide rail 4 to the upper rail 4, lower rail 1, and vehicle floor via the back frame 17 and reclining device 8.

Therefore, an upward peeling load is applied to the upper rail 4, but since this load is borne by both left and right sides of the upper rail 4, the upper rail 4 is not peeled off from the lower rail 1. That is, the inner side of the upper rail 4 is locked with the lower rail 1 by the locking device, and the outer side of the upper rail 4 is fitted with the support part 6a of the bracket 6 to increase the peeling strength, so that the upper rail is damaged by the above-mentioned load. 4
This prevents deformation of the outer surface of the upper rail 4.
The engaging portion 41 is locked to the locking portion 11 of the lower rail 1.

As described above, in the present invention, since the bottom frame does not receive the impact load from the back frame, it can be long enough to receive the seat seat, does not require a reinforcing structure, and is made lightweight by press working of thin metal plates, etc. It is something that can be done.

Further, the present invention provides an upper rail of a seat adjuster with an engaging portion that engages with the lower rail, and a bracket having a U-shaped support portion that fits the engaging portion and the outer surface of the upper rail inside. It has a structure in which the upper rail and the inner side of the lower rail are locked together by a locking device. Therefore, the peeling load applied to the upper rail is dispersed by the locking device installed on the inside and the support part of the bracket placed on the outside, so even if an upward impact force is applied to the upper rail, it will not peel off from the lower rail. Never.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the principle of a conventional product, FIG. 2 is an explanatory diagram of the principle of the present invention, FIG. 3 is an exploded perspective view of the present invention, and FIG. 4 is a sectional view of the main part of the same in an assembled state. C is a seat adjuster, 1 is a lower rail, 4 is an upper rail, 41 is an engaging part, 6 is a bracket, 6, B is a support part, 8, D is a reclining device, 10, B is a bottom frame.

Claims (1)

[Scope of Claims] 1. A seat adjuster comprising a lower rail fixed to the vehicle floor side and an upper rail into which the lower rail is slidably inserted; on the upper rail side of the seat adjuster,
It consists of a bracket fixed together with the seat frame, and a reclining device attached to this bracket, the upper rail is provided with an engaging part extending below a part of the lower rail, and the upper rail is provided on the inner side of the seat adjuster. a locking device for locking the reclining device to the lower rail, and the bracket is provided with a U-shaped support portion into which the outer side of the upper rail and the engaging portion are fitted, and the reclining device is fixed. .