JPH04137923U - vehicle seat - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent or suppress deformation of the upper rail 5 and lower rail 4 by locally deforming the bracket 6 that connects the seat cushion 1 and the upper rail 5 in the event of a head-on collision of an automobile. To prevent a front and rear lock mechanism 7 from being unlocked against one's will. [Structure] A weak point 20 such as a notch is formed close to the seat cushion mounting position of the bracket 6.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a seat for vehicles such as automobiles and construction vehicles.

0002

[Conventional technology]

An example of a conventional vehicle seat of this type is shown in FIGS. 4 to 6. In Figure 4, 1 is the seat cushion, 2 is the seat back, and 3 is the headrest. It is an int. A cross section taken along line A-A in FIG. 4 is shown in FIG. 5, and in FIG. 5, 4 is a lower rail; 5 is an upper rail, 6 is a bracket, and 7 is a front and rear lock mechanism. The lower rails 4 are fixed to the floor of the vehicle body, and are spaced apart from each other at a predetermined distance in front of the vehicle body. It extends parallel to the rear. The upper rail 5 runs along the front and back direction of the vehicle body. to the lower rail 4 via rollers 8 etc. so that it can move relative to the lower rail 4. Supported. At least the upper surface of the front end and the rear end of the upper rail 5 is provided with a bracket. The lower end of the racket 6 is welded, and the upper end of these brackets 6 is attached to the seat cushion 1. It is fixed to the cushion pan 9 with screws 10, etc. The front and rear locking mechanism 7 is fixed to the lower rail 4, and there is a slight gap on one side of the lower rail 4. Rack plates 11 extending parallel to each other and fixed to one side of the upper rail 5 A rod 13 is rotatably supported by a bracket 12, and a rod 13 is fixed to this rod 13. It consists of 14 backplates. Therefore, a not shown Operate the lever to rotate the rod 12 around its axis and lock the lock plate 14. the lower rack by engaging one of the numerous racks on the rack plate 11. The relative longitudinal positions of the rail 4 and the upper rail 5 are locked.

0003

[Problem that the idea aims to solve]

In the event of a car collision (head-on collision), a large A component of the inertial force is applied to the seat cushion 1. Then, the conventional vehicle seat In this case, as shown in Fig. 6, the bracket 6 falls down and the upper lever falls. The rail 5 and lower rail 4 are deformed, the front and rear locking mechanisms 7 are unlocked, and the seat cushion is There was a risk that Option 1 would move forward.

0004

[Means to solve the problem]

This invention was proposed to solve the above problems, and its gist is as follows: However, they are fixed to the car body and run flat along the front and back direction of the car body at a predetermined distance from each other. A pair of lower rails that extend in a row, and are supported by these lower rails in the longitudinal direction of the vehicle body. The upper rail moves relatively along the upper rail, and the upper rail moves along the A front and rear locking mechanism for locking the front and rear positions of the upper rail, and a A vehicle seat with a seat cushion fixed to the seat via a bracket. , the above bracket has a notch etc. near the seat cushion mounting position. A vehicle seat is characterized in that a weak point is formed.

[0005]

[Effect]

Since the present invention has the above configuration, excessive load is placed on the seat cushion. When weight is applied, the bracket deforms at its weak point, causing the upper Prevent or suppress deformation of the rail and lower rail.

[0006]

【Example】

One embodiment of the invention is shown in FIGS. 1 and 2. As shown in FIG. 1, by forming a notch in the side wall of the bent part of the bracket 6. A weak point 20 is formed close to the seat cushion mounting position. The other configurations are similar to the conventional ones shown in FIGS. 4 and 5.

[0007] However, if an excessive load is applied to the seat cushion 1 during a head-on collision of a car, etc. , the bracket 6 is partially bent at the weak point 20 as shown in FIG. Absorbs energy and prevents load from being transmitted to upper rail 5 and lower rail 4 Or suppress. In addition, as shown in FIG. 3, by providing holes 21 and apertures 22 in the bracket 6, A weak point can also be formed.

[0008]

[Effect of the idea]

In this invention, there is a notch etc. near the seat cushion mounting position of the bracket. This creates a weak point in the seat cushion, so when an excessive load is applied to the seat cushion, the seat cushion The racket is locally deformed at its weak point and the upper rail and lower rail prevent or suppress the collapse of In this way, unlocking of the front and rear locking mechanisms can be prevented. This can prevent the seat cushion from moving back and forth against your will, and can improve occupant safety.

[Brief explanation of drawings]

FIG. 1 is a perspective view of essential parts showing one embodiment of the present invention.

FIG. 2 is a sectional view showing a modified state of the above embodiment.

FIG. 3 is a side view of main parts showing another embodiment of the present invention.

FIG. 4 is a perspective view of a conventional vehicle seat.

FIG. 5 is a partially enlarged sectional view taken along line A-A in FIG. 4;

FIG. 6 is a sectional view showing a deformed state of a conventional upper rail and a lower rail.

[Explanation of symbols]

4 Lower rail 5 Upper rail 6 Bracket 20 Weak points

Claims (1)

[Scope of utility model registration request] Claim 1: A pair of lower rails fixed to the vehicle body and extending parallel to each other along the longitudinal direction of the vehicle body at a predetermined distance from each other, and an upper rail supported by these lower rails and relatively movable along the longitudinal direction of the vehicle body. and a vehicle seat comprising: a front-rear locking mechanism installed on the side of the lower rail for locking the front and rear positions of the upper rail; and a seat cushion fixed to the upper rail via a bracket; A vehicle seat characterized in that a weak point such as a notch is formed in the bracket near the seat cushion mounting position.