JP2517052Y2 - Seat fixing device for automobile - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat fixing device.

[0002]

2. Description of the Related Art A conventional vehicle seat 1 is shown in FIG.
(See Japanese Utility Model Laid-Open No. 61-163739),
A nut fixed to the lower surface 2b of the vehicle body 2 by inserting the bolt 3 into a closed loop-shaped locking member 4 having a front end 5a supported by a bolt 3 on the cross member 2a of the vehicle body 2 and protruding from a rear end 5b. The seat cushion 5 is supported so as not to be disengaged from the vehicle body 2 by being screwed into the vehicle body 6 even when sudden braking occurs during traveling, and the vehicle body 2 so that the shaft portion 7 can lean forward on the seat cushion 5. The seat back 8 is rotatably supported by the tire house inner panel 2c.

[0003]

However, according to such a vehicle seat fixing device, the seat cushion 5
Since the rear end portion 5b is fixed by the bolt 3, the front-back thickness of the seat back 8 must be thinned by the head 3a of the bolt 3 and the seating comfort is deteriorated accordingly. .

Further, since the tip 3b of the bolt 3 for fixing the seat cushion 5 projects from the lower surface 2b of the vehicle body 2, it interferes with the safety parts 9 such as a brake tube and a fuel tube arranged near the bolt 3. In order to avoid it, it is necessary to set a protector (not shown) etc., which causes one of the cost increase.

Further, the fuel tank (not shown) is also bolt 3
Since the capacity must not interfere with the tip 3b of the
The amount of full gasoline will be reduced accordingly. Therefore, an object of the present invention is to provide a seat fixing device for an automobile, which secures the front-back thickness of the seat back and prevents the seat cushion from coming off from the vehicle body during emergency braking.

[0006]

In order to achieve the above object, the present invention provides a seat fixing device for an automobile, which includes a seat cushion supported by a vehicle body and a seat portion which can be tilted forward on the seat cushion. A seat back rotatably supported with respect to the vehicle body, a closed loop locking member is projected from a rear end portion of the seat cushion, and the seat back is erected at a position where the seat back is erected. A pawl is provided on a shaft portion of the seat back at a position where it can be locked by a stopper and at a position where the seat back is not locked by the locking device while being moved to a position where the seat back is tilted forward. It is characterized by.

[0007]

[Operation] Therefore, when the seat back is erected, the claws provided on the shaft portion of the seat back are in the movement locus of the closed-loop locking device that is projected from the rear end of the seat cushion. Are projected to cross, so
Even if an attempt is made to move to the front side by applying a forward moving load due to the emergency braking to the seat cushion, the claw is caught by the claw, and further movement cannot be performed.

When the moving load of the emergency braking occurs when the seat back is tilted forward, the seat cushion cannot be moved by the weight of the seat back because it is under the seat back.

[0009]

1 to 5 relate to an embodiment of the present invention. The same members as those in FIG. 6 are designated by the same reference numerals,
A duplicate description will be omitted. Reference numeral 10 denotes an automobile seat fixing device of the present invention, and the automobile seat fixing device 10
Is a seat cushion 5 supported by the vehicle body 2 and is rotatably supported by the shaft portion 7 on the seat cushion 5 so that the seat cushion 5 can be tilted forward as shown by a chain double-dashed line. It is composed of a seat back 11.

A closed loop-shaped locking member 4 is projected from the rear end portion 5b of the seat cushion 5, and the seat back 1
1 is in a position where it can be locked by the locking tool 4 at a position where it is erected as shown by a solid line in FIG.
The claw 12 located at a position where it is not locked to the locking tool 4 is arranged on the shaft portion 7 of the seat back 11.

As shown in FIG. 4, the pawl 12 has a through hole 14 through which the shaft portion 7 is inserted, and through holes 16 and 16 which are fixed to the back surface 11a of the seat back 11 with screws 15. A mounting piece 17 to be formed is formed.

Therefore, when the seat back 11 is erected, the closed loop-shaped locking member 4 protruding from the rear end portion 5b of the seat cushion 5 is in the movement path, that is, in the protruding direction of the locking member 4. Seat back 1
Since the claws 12 arranged on the shaft portion 7 of No. 1 are projected so as to cross, even if a forward movement load due to emergency braking is applied to the seat cushion 5 and the claws 12 move toward the front side, the claws 12 are engaged. The stopper 4 is caught and it cannot move any more.

Even if there is a relationship between the claw 12 and the locking tool 4, when the seat back 11 is tilted forward,
Since the movement locus 13 of the claw 12 is at the position where it does not engage with the engagement tool 4, it can be moved forward.

Even if the seat back 5 is not locked in this manner, the seat cushion 5 is located under the seat back 11 when the moving load of the emergency braking occurs, so that the seat back 1
You will not be able to move under the weight of 1. Note that reference numeral 2d is a concave portion that prevents interference with the claw 12 formed on the vehicle body 2.

[0015]

As described above, according to the present invention,
As a seat fixing device for an automobile, when the seat back is erected, the seat fixing device is arranged on the shaft portion of the seat back in the movement locus of the closed-loop-shaped locking tool protruding from the rear end of the seat cushion. Since the claws are projected so as to cross, even if the forward movement load due to emergency braking is applied to the seat cushion and you try to move to the front side, the claws are caught by the claws and further movement is possible. If there is a moving load of emergency braking that is applied when the seat back is tilted forward, the seat cushion is under the seat back, so it will not be possible to move by the weight of the seat back. Therefore, there is a practical effect that it is possible to prevent the seat cushion from coming off from the vehicle body during emergency braking while ensuring the front-back thickness of the seat back.

[Brief description of drawings]

FIG. 1 is a cross-sectional explanatory view of essential parts according to an embodiment of the present invention.

FIG. 2 is an explanatory perspective view of main parts of FIG.

FIG. 3 is an explanatory perspective view showing a state in which the seat back of FIG. 1 is tilted forward.

4 is a perspective explanatory view of the claw of FIG. 1. FIG.

5 is an enlarged perspective view of a V portion of FIG.

FIG. 6 is a diagram corresponding to FIG. 1 of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 seat 2 vehicle body 4 closed loop-shaped locking tool 5 seat cushion 7 shaft portion 8 seat back 11 seat back 10 automobile seat fixing device 12 claws

Claims (1)

(57) [Scope of utility model registration request] 1. A vehicle seat fixing comprising a seat cushion supported on a vehicle body and a seat back rotatably supported on the vehicle body by a shaft portion so as to be able to lean forward on the seat cushion. In the device, a closed loop-shaped locking tool is projected from a rear end portion of the seat cushion, and the seat back is in a position where it can be locked by the locking tool while the seat back is erected and the seat back is tilted forward. A seat fixing device for an automobile, characterized in that a claw at a position where it is not locked by the locking tool while being moved to the fixed position is arranged on a shaft portion of the seat back.