JPS6213883Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an energy absorbing seat device that absorbs impact energy applied to a seat of an automobile or the like.

Conventionally, this type of energy absorbing sheet device is
The structure is complex because it consists of a guide mechanism that guides the movement of the seat when it receives an impact, and a special energy absorption mechanism that absorbs the impact force applied to the seat between the seat and the seat support member. Moreover, it was heavy and the manufacturing process was complicated.

This idea was made in view of the above circumstances,
It is an object of the present invention to provide an energy absorbing sheet device that has a simple structure, is lightweight, and is extremely easy to manufacture and install.

An embodiment of this invention will be described below based on the drawings.

According to this invention, an automobile seat 3 is attached to a seat support member 4 via a lower rail 1 and an upper rail 2. The lower rail 1 has a cross-sectional shape such that each side of both sides thereof is bent upward and then bent to the left and right, which are spaced apart from each other, to form left and right flange portions 5, The screw hole 7 of the seat support member 4 passes through the bottom plate portion 6.
It is attached by screws (not shown) that are screwed into the seat 3 so that its longitudinal direction coincides with the front-rear direction (left and right directions in FIG. 1) of the seat 3. The seat support member 4 is, for example, a seat slide,
The seat 3 is adjusted to move along the front-rear direction with respect to the floor surface, and then locked at an appropriate moving position. The upper rail 2 matches the lower rail 1 and is guided so as to be movable along its longitudinal direction, and each side of the upper rail 2 is bent downward and then bent toward each other. The cross-sectional shape is such that left and right U-shaped portions 8 that hold the left and right flange portions 5 of the lower rail 1 are formed. And this Atsupareru 2,
It is attached to the cushion frame 11 of the seat 3 by screws (not shown) passing through screw insertion holes 10 in the flat plate portion 9.

Now, in this invention, the rear end of the seat 3 in the upper rail 2 is curved upward to form a curved part 12, and a stopper 13 is attached inside the front end of the seat 3. ing. The lower rail 1 is held between the stopper 13 and the curved portion 12 in such a manner that relative movement in the longitudinal direction thereof is prevented.

Next, the operation of the above-mentioned component device will be explained.

Normally, relative movement of the lower rail 1 is prevented between the curved part 12 of the top rail 2 and the stopper 13, so the seat 3
It is integrated with the seat support member 4 via 2.

Now, for example, if a car collides with the front of the car, a large impact force is applied to the seat 3 that moves it forward. Depending on the magnitude of this impact force, the curved portion 12 of the upper rail 2 is forcibly restored to the straight state by the lower rail 1 as shown by the two-dot chain line in FIG.
move forward with. Therefore, the curved portion 12 of the upper rail 2 is forcibly restored and deformed, thereby absorbing the impact energy.

The absorption of impact energy can be improved by changing the curved shape of the curved portion 12, such as by bending the curved portion 12 in the left or right direction, or by changing the wall thickness and material of the curved portion 12. The degree of curvature can be set as appropriate, but the curvature is set to such a degree that the lower rail 1 can be guided smoothly while suppressing sliding due to its straight deformation.

Further, if a stopper is provided inside the tip of the curved portion 12, it is possible to limit the maximum amount of movement of the sheet 3 when a strong impact force exceeding a predetermined limit is applied.

Further, in the above embodiment, the curved portion 12 is formed at the rear end of the seat 3 on the upper rail 2, but this curved portion 12 is formed at the front end of the seat 3 on the upper rail 2. This makes it possible to absorb impact energy during a rear collision of an automobile, and the curved portion 12 may be formed on the end side of the lower rail 1.

Furthermore, the shapes of the lower rail 1 and the upper rail 2 are not limited to the above embodiments, but may be arbitrary. Furthermore, in the embodiment shown in FIG. 2, the seat support member 4 and the lower rail 1 are provided separately, but as shown in FIG. Attach directly to the body of the car, and attach Atsupa Rail 2 to it.
Of course, it is also possible to attach it so that it can slide freely.

As explained above, according to this invention, impact energy is absorbed with an extremely simple structure that only requires bending and forming at least one end of the lower rail and upper rail interposed between the seat and the side to which it is fixed. Moreover, it has advantages such as being lightweight and extremely easy to manufacture and install.

[Brief explanation of the drawing]

Fig. 1 is a side view showing one embodiment of this invention, Fig. 2 is an exploded perspective view of its main parts, Fig. 3 is an explanatory diagram of its operation, and Fig. 4 is an exploded perspective view of its main parts showing another example. It is. 1...Lower rail, 2...Atsupa rail, 3...
...Sheet.

Claims (1)

[Scope of utility model registration request] A top rail is provided on the bottom side of the seat, a lower rail is provided for movably guiding the top rail, and at least one end of both rails is bent and formed, and the bending portion of the one rail is forcibly bent. An energy-absorbing sheet device that absorbs impact energy by moving both rails relative to each other while restoring and deforming them.