JPS5853227Y2 - Cabover type automobile seat structure - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a seat structure for a cab-over type automobile.

In particular, the present invention relates to a seat structure in which the seat bottom is movable in the front-rear direction with respect to the floor portion.

For example, in a cab-over type automobile, it would be convenient if the area of the driver's passenger seat could be expanded and used as a bed or a luggage storage.

In this case, one possible means for expanding the seat portion is to move the seat bottom forward and place all or part of the seat back behind the seat bottom.

An object of the present invention is to provide a seat bottom sliding support structure that is simple and reliable in operation in an automobile seat structure that supports the seat bottom so as to be movable in the longitudinal direction.

That is, in the present invention, a rail with a U-shaped cross section that opens laterally inward is fixed to the floor part, and the side frame part of the seat bottom frame provided at the seat bottom extends approximately parallel to the front-rear direction of the vehicle body. It is so formed that it is slidably engaged with the above-mentioned rail via a synthetic resin bushing, and the rail is provided with a stopper for regulating the amount of movement of the seat bottom.

According to the present invention, the side frame portion of the seat bottom frame engages with the rail provided on the floor portion, so the number of parts is reduced compared to a structure in which a member for engaging the rail is provided separately. The structure is simple and sufficiently reliable, and the height of the rail portion can be lowered, making it possible to increase the thickness of the cushion pad at the bottom of the seat to improve cushioning performance.

In addition, since the synthetic resin bushings slide against the side frame portions of the seat bottom frame, frictional resistance can be reduced, sliding can be performed easily, and abnormal noises can be prevented from occurring during sliding.

Furthermore, since the rail is opened on the inside, there is no need for a separate part to cover the opening from the outside compared to a rail that is opened on the outside.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 schematically shows the cabin section of a cab-over type automobile in which the present invention is implemented. The cabin 1 is arranged so that the floor panel 2 is located above the engine 3 and the shaker 4. .

Inside the cabin 1, a steering device 5 and a speed change lever 6 are arranged as usual, and the floor panel 2 is raised in a stepped manner behind the speed change lever 6 to form a seat attachment portion 2a.

In the seat mounting portion 2a, an engine inspection phase opening lower part is formed on the floor panel 2, and an engine cover 8 is attached to the floor panel 2 so as to be openable and closable so as to cover the opening lower part.

The rear edge of the engine cover 8 is hinged 8 to the floor panel 2.
A locking hook 9 is provided on the front edge, and a locking device 1 on the floor panel side is attached to this hook 9.
0 is engaged.

On the engine cover 8, there is a seat) 1 having the configuration shown in FIG.
1 is installed.

This seat 11 has a seat bottom 12 and a seat back 1.
3, and the seat back 13 is divided into upper and lower halves, and includes an upper seat back 13a and a lower seat back 13b.

The seat bottom 12 is attached so as to be slidable back and forth.

For this purpose, a pair of laterally inwardly opening U-shaped cross-section rails 14 are attached to the engine cover 8 so as to extend in the longitudinal direction along both sides, as shown in FIG.

A frame 15 made of a frame-shaped pipe member is attached to the lower surface of the seat bottom 12, and both sides of this frame 15, that is, side frames 15a, are attached to the rails 14 as shown in FIGS. slidably engages with.

As shown in FIGS. 4 and 5, a bushing 16 made of synthetic resin is provided at an appropriate location along the length of the rail 14 to make direct sliding contact with the side frame 15a.

Further, a stopper 17 is attached to the side frame 15a, and this stopper 17 is attached to the side frame 15a.
The front position of the seat bottom 12 is regulated by engaging with a stopper 18 provided at a.

According to this arrangement, the side frame 15a of the seat bottom 12 is connected to the rail 14 through the synthetic resin bushing 16.
Compared to a structure in which a rail sliding member is provided separately on the side frame, fewer parts are needed, the structure is simpler, and the height of the rail part can be lowered. I can do it.

Seatback hinge brackets 19 are attached to both sides near the rear end of the engine cover 8, and an operating rod 20 of a seat bottom lock mechanism 21 is attached to one of the brackets 19.

The locking mechanism 21 engages with a lock pin 22 installed in the seat bottom frame 15 and acts to lock the seat bottom 12 in the retreated position.

The lock can then be released by operating the operating rod 20.

As shown in Figure 3, the seat back hinge bracket 1
9, the lower end of the seat back frame 34 is attached by a hinge pin 35 so as to be rotatable in the front and back direction, and the upper seat back 13a is fixed to the upper end of the frame 34 (7>).

A locking device 36 for locking the seatback to the rear wall of the cabin 1 is provided at the rear of the upper seatback 13a.
are provided as shown in FIG.

The lower seat back 13b is locked by the locking device 37.
It is removably attached to the seat back frame 34.

Therefore, by moving the seat bottom 12 forward and arranging the lower seat back 13b behind the seat bottom 12 as shown in FIG. Can be used for multiple purposes.

As described above, in the seat structure of the present invention, in order to support the seat bottom so that it can move freely in the front and back direction, an opening is provided inward in the lateral direction in the engine cover provided on the floor of the automobile, such as the floor panel. A rail with a U-shaped cross section is fixed, and the parallel side frame portion of the seat bottom frame is slidably engaged with this rail via a synthetic resin bushing, so the sliding system can be operated reliably with a small number of parts. Since a dynamic mechanism can be obtained and the height of the rail portion can be lowered, the cushion pad of the seat bottom can be made thicker to improve the cushioning performance.

In addition, since the synthetic resin bushings slide against the side frame portion of the seat bottom frame, frictional resistance can be reduced, sliding can be done easily, and abnormal noises can be prevented when sliding. .

Furthermore, the amount of movement of the seat bottom can be reliably regulated by a stopper provided on the rail.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing the cabin of a cab-over type automobile equipped with the seat structure of the present invention, FIG. 2 is a perspective view showing an example of the seat structure to which the present invention is applied, and FIG.
FIG. 4 is a vertical sectional view showing an example of the seat bottom support mechanism, FIG. 5 is an exploded perspective view of the rail structure, and FIG. 6 is an engine cup with rails. 7 is a cross-sectional view of the seat bottom support mechanism. 8...Engine cover, 13...Seat back, 1...Seat bottom frame, 1m. 12...Seat bottom, 4...Rail, 15...15a...Side frame

Claims (1)

[Scope of utility model registration request] The space created when the seat bottom, which can be moved forward and backward relative to the floor, is moved forward. In the seat structure,
A rail with a U-shaped cross section that opens laterally inward is fixed to the floor part, and a side frame part of a seat bottom frame provided at the seat bottom is formed to extend approximately parallel to the longitudinal direction of the vehicle body. A seat structure for a cab-over type automobile, characterized in that the rail is slidably engaged with the seat via a synthetic resin bushing, and the rail is provided with a stopper for regulating the amount of movement of the seat bottom. .