JPS60121148A - Vehicular reclining seat of shock-absorbing type - Google Patents

Abstract

PURPOSE:To absorb shock upon collision and bumping, by incorporating a sensor for detecting a transmitted from the back rest of a seat through a link mechanism to an oil cylinder. CONSTITUTION:When a shock from the outside is received by a vehicle body side frame 12, if it is due to bumping at the rear of a vehicle body, the driver is bumped against the back rest 1 of a seat, strongly. This shock is transmitted from a reinforcing frame 5 to a piston rod 6 so that a piston 13 applies a pressure to oil in the chamber D side of an oil cylinder 7. Further, a pressure detecting sensor 8 is operated to establish an open circuit between the chamber D side and the chamber C side of the oil cylinder 7 to move the back rest at a moment to absorb a shock. Further, as to a shock from the front of the vehicle body, the back rest 1 receives a forward thrust, resulting in a pressure rise in the chamber C side of the oil cylinder 7, thereby the open circuit is established between the chamber D side and the chamber C side through the pressure detecting sensor.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shock-absorbing reclining seat that minimizes accidents caused by impact when a vehicle collides or rear-ends.

Conventional reclining devices for automobile seats mainly rely on an interlocking mechanism that combines tooth profiles to rotate the backrest seat in the front-rear direction, but this has the disadvantage that it is not possible to manually absorb shocks from outside the automobile. There is.

The purpose of this invention is to absorb the impact yH that occurs during a collision or rear-end collision of an automobile with the backrest/rest, thereby minimizing human accidents.

To explain this invention with reference to the drawings, in FIG.
Then, it is attached to the seat frame 1o, and the back support sheet 1 is engaged so as to be rotatable in the longitudinal direction, and one end of the notebook belt N-2 is fixed with the bin 4 as the axis, and the other seat belt 1 is attached to the seat frame 1o.
1-1, the reinforcing frame 5 on the opposite side of the back support sheet 10
sticks to.

In FIG. 2, a reinforcing frame 5 is attached to the back support sheet 1.
an oil/cylinder 7 which is fixed and rotatably engages the oil cylinder piston rod 6 via the bottle 20;
A spring 9 is inserted into the D-side chamber of the frame 5, and one end of the oil cylinder 7 is inserted into the bin 22 to apply forward thrust to the backrest 1 fixed to the reinforcing frame 5 via the piston rod 6 and the bin 20. It is rotatably attached to the seat frame 10 via.

By operating the lever 12 shown in FIG. 4, the operating pin 17 attached to the detection sensor 8 shown in FIG. By operating the D $111 and D side of the oil cylinder 7 shown in Fig. 2, the oil filled between the D side and C side chambers of the oil cylinder 7 and each boat will drain the back. The seat 1 can freely rotate back and forth around the bin 4 as a fulcrum, and can perform a reclining function. Also, as shown in Figure 4, /<-1
2 by the spring 21, the movable bin 17 in the detection sensor 8 shown in FIG.
and spring 15 return to the balanced position, and spool 1
4, as shown in Figure 6, the D port and C boat are
Returning to the block state, the backrest 7 and 10 are rotated back and forth in an unchanged position.

In this way, by operating the lever 12 shown in FIG. 4, the backrest 7 and 10 can be freely rotated back and forth, and the reclining function can be satisfied at any position.

For example, when the vehicle body side frame 25 in FIG. 2 receives an external impact and there is a rear-end collision, the driver and passenger move toward the rear and strongly hit the back support seat 1. This impact is transmitted from the reinforcing frame 5 to the piston mouth and the oil cylinder 7 through the bottle 20.
Pressure is applied to the oil in the D side chamber of the
It passes through the D boat shown in the figure, enters the E boat, generates pressure in the G chamber, compresses the spring 15, and moves the B section of the spool 14 to the positions of the D boat and the C boat. The D side and C side chambers are opened, and the back support sheet 1 is momentarily moved to the impact side to absorb the impact to a minimum. In addition, in the case of a frontal impact, the driver and passengers can use the seatbelts 11-1 and 11-2 shown in FIG. The piston 13 moves rearward, creating pressure in the C-side chamber of the oil cylinder 7. This pressure is caused by the oil flowing from the C boat through the F boat as shown in Figure 3.
Pressure is generated inside the chamber, the spool 14 is moved, the spring 16 is compressed, the D side chamber and the C side chamber of the oil cylinder 7 shown in FIG. 2 are made an open circuit, and the back support sheet 1 is
In response to a frontal impact, the spring 15 and spring 16 shown in FIG. 3 are moved momentarily in the direction of the impact to absorb the impact force.
Due to the force of the lance, the spool 14 is connected to the D boat and the C
Return the boat's open circuit to a closed circuit and return to the blocked state.

As mentioned above, in order to instantly absorb the impact force that occurs during a car collision or rear-end collision, impact detection is performed from the back seat via a link mechanism using an oil glue/dart/hydro mechanism. It incorporates a sensor.

The spool can also be manually moved to provide a reclining action for correcting the driving posture of the driver and passengers.

As explained above, this invention places the safety of the driver and passengers first, and in order to prevent accidents caused by frequent collisions and rear-end collisions, this invention absorbs instantaneous impact force, and also absorbs the momentary impact force during normal driving. The reclining mechanism also has the structure of a highly economical and safe shock absorbing reclining mechanism for automobiles.

[Brief explanation of the drawing]

1 is a perspective view showing the whole, FIG. 2 is a longitudinal sectional view of the whole, FIG. 6 is a sectional view of an impact force detection sensor, and FIG. 4 is a sectional view of a lever for manually operating the spool. 1. Backrest 2. Seat 3. Muffler 4. Bin 5-Pa reinforcement frame 6. Piston rod 7.
... Oil cylinder 8 Detection sensor 9 ... Spring 10 - Seat frame 11-1
．． 11-2 ・ Seat belt 12 ・ Lever 13 ・
Piston 14... Spool 15/16 Spring 17...
・・・Operating bin 18・Wire cable 19...
... Bracket 20, Bin 21... Spring 22, Bin 23... Vehicle side frame Fig. 3 9. Figure 4

Claims (1)

[Scope of Claims] A reinforcing frame 5 is fixed to the back support seat 1, and an oil 7 and a cylinder rod 6 are rotatably engaged through a pin 20. One end of the cylinder 7 is connected to the seat 2 through a bottle 22. The seat frame 10 is rotatably mounted on the seat frame 10 which is fixed to the seat frame 10. A spring 9 is inserted into the D side chamber of the cylinder 7 to apply a forward thrust to the back support seat 1, and a pressure detection sensor 8 is connected between the 9 circuit of the cylinder 7 and the C circuit.
Remove the boat opening/closing operation lever 12 of the DI12 circuit and C circuit of the detection sensor 8 on either the left or right side of the seat frame 10 fixed to the seat 2 with a bracket 19, set it to the reclining operation position, and place it in the reclining operation position. and one end of the seat belt 11-2 to the connecting bin 4 of the seat 2,
This is a structure of a shock absorbing reclining seat for an automobile, in which one end of a seat belt 11-j is attached behind a reinforcing frame 5.