JPH0423706Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to an angle adjustment mechanism for an automobile seat that allows the rear seat cushion for an automobile to be tilted forward independently.

(Prior art) In the case of a so-called full flat seat in which the front seat back can be folded down to form one flat surface with the front seat cushion, front seat back and rear seat cushion, the middle of the rear seat cushion is Because the front edge of the recess is made high, if the occupant lies down, his or her head will drop, making it less than comfortable to use. Therefore, cushions with headrests and armrests removed or placed on them are usually used as pillows.

(Problems to be Solved by the Invention) However, removing the headrest and armrest and using them as a pillow not only requires the trouble of reattaching them, but is not necessarily suitable as a pillow. In addition, some people do not like to carry cushions into the car because it reduces the space inside the car.

Therefore, an object of the present invention is to provide a rear seat cushion that can be easily used as a pillow without being attached or detached.

(Means for Solving the Problem) In order to achieve the above object, the rear seat cushion angle forward tilt adjustment mechanism of the present invention divides the seat cushion into front and rear parts, and each seat cushion swings at its front end. A locking mechanism consisting of a ratchet mechanism is provided, which supports the seat cushion freely and rotates freely in the direction of tilting the seat cushion forward, but is fixed in the direction of tilting the seat cushion in the opposite direction. When the locking mechanism is released and the seat cushion is returned to its original position, the locking mechanism is resettable so that the rear seat cushion can be tilted forward at any angle and used as a pillow when the seat is fully flat. It is something.

(Example) The configuration of the present invention will be described in detail below based on an example shown in the drawings.

The rear seat cushion 1 of the present invention is divided into front and rear sections at appropriate positions as shown in FIG.
It is swingably attached to a bracket 4 whose end is fixed to the vehicle body using a pin 5. The split seat cushions 2, 2 usually consist of a block that mainly supports the shoulders of the occupant when the occupant is lying down, and a block that supports the head of the occupant.
Together with the surrounding fixed seat cushion 6, the rear seat cushion 1 is formed.

The front end of the split seat cushion 2 is swingably attached to the vehicle body via a bracket 4,
An angle adjustment mechanism 7 is provided so that an arbitrary angle can be taken.

This angle adjustment mechanism 7 includes a ratchet segment 8 fixed to the frame 3, a ratchet 9 that prevents the segment 8 from rotating in the anti-forward direction, and a locking that prevents the ratchet 9 from rotating when the meshing of these segments is released. It consists of a plate 10.

The ratchet segment 8 has a wavy pawl surface 11 that engages with the ratchet 9, and is fixed coaxially with the pin 5 of the bracket 4 supporting the frame 3. On the other hand, the ratchet 9 is swingably attached to the bracket 4 with a pin 12, and one end of the ratchet 9 is biased counterclockwise in the figure by a return spring 13 provided between the ratchet 9 and the bracket 4. A stopper pin 14 is fixed to the bracket 4 to restrict the maximum movement position of the ratchet 9 in the counterclockwise direction. The locking plate 10 is attached at one end to the bracket 4 with a pin 15 so as to be swingable. This locking plate 10 is constantly biased in the counterclockwise direction by a return spring 16. Further, one end of a connecting wire 18 wound around the pinch roller 17 is anchored to the locking plate 10, and the other end is provided so as to come into contact with the ratchet segment 8. The end of the connecting wire 18 on the side that abuts the ratchet segment 8 is attached to a pin 20 which is slidable in an arcuate groove 19 provided in the bracket 4. Incidentally, the ratchet 9 is provided with a V-shaped notch 21 with which the locking plate 10 engages.

According to the rear seat cushion structure constructed as described above, in the normal running and seating state, the ratchet segment 8 and the ratchet 9 are engaged with each other, so that the split seat cushion 2 can be fixed in a substantially horizontal state. In addition, when operating the front seat 22 to make it fully flat, if you pull up the rear part of the split seat cushion 2 and rotate the seat 2 around the pin 5 to tilt it forward, it can be used as a pillow or to support your shoulders. Can be used as a tilted seat. At this time, the ratchet segment 8 lifted together with the split seat cushion 2 rotates while pushing up the ratchet 9 in the clockwise direction.
When each wavy pawl portion 11 passes, the ratchet 9 is brought into mesh with the pawl portion on the lower stage side. Therefore, by providing the wavy claw surfaces 11 of the ratchet segments 8 at appropriate intervals or numbers, the angle of the split seat cushion 2 can be freely controlled.

Further, when the split seat cushion 2 is to be returned to the running or normal seating state, the split seat cushion 2 is lifted to the maximum position and the ratchet segment 8 is separated from the ratchet 9. The movement of the cam pin 20 sliding in the groove 19 of the bracket 4 in conjunction with the movement of the ratchet segment 8 is transmitted to the locking plate 10 via the wire 18, thereby pulling the locking plate 10 down in the clockwise direction.
As a result, the notch portion 21 of the ratchet 9 meshes with the pawl portion of the locking plate 10, and the ratchet 9
is restrained in a state separated from the ratchet segment 8. Therefore, split seat cushion 2
can rotate freely, so press down on the rear side.
This return operation of the split seat cushion 2 causes the ratchet segment 8 to push the cam pin 20 to the left again, so that the locking plate 10 separates the ratchet 9 from the ratchet 9 and sets it in a free state. The now free ratchet 9 rotates counterclockwise by the action of the return spring 13 and meshes with the ratchet segment 8 again. As a result, the split sheet cushion 2 is fixed.

(Effects of the invention) As is clear from the above explanation, the rear seat of the invention supports the seat cushion at its front end so that it can swing freely, while the seat cushion can freely rotate in the direction of tilting the seat cushion forward; A locking mechanism consisting of a ratchet mechanism fixed in the direction is provided, and when the locking mechanism is released when the seat cushion is tilted most forward and the seat cushion is returned to its original position, the locking mechanism is reset. The seat cushion can be used as a pillow when used in a fully flat state. Furthermore, by tilting each seat cushion forward, when the front seat is placed in a fully flat state, the divided seat cushion on the rear side of the rear seat cushion can be used as a pillow.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing an example of the rear seat cushion of the present invention, Fig. 2 is an explanatory diagram showing a fully flat state of an automobile seat incorporating the same seat, and Fig. 3 is a diagram of the operating state of the lock mechanism. B is the normal seated state when driving, B is the state where it is used as a pillow, C is the state where it is used as a pillow.
respectively indicate the state of returning to the normal sitting state. 2... Seat cushion, 3... Frame, 4
... Bracket, 5 ... Pin, 8 ... Ratchet segment, 9 ... Ratchet, 10 ... Locking plate, 13 ... Return spring, 1
8...Indicates each connecting wire.

Claims (1)

[Scope of utility model registration request] The seat cushion is divided into front and rear parts, and the end of the frame of each seat cushion is rotatably attached to a bracket provided on the vehicle body side, and a ratchet segment is fixed on the same axis, and the ratchet segment and teeth are fixed on the same axis. A ratchet, which freely rotates only in the direction of tilting the mating seat cushion forward, is swingable against the bracket and is constantly biased in the direction of engagement of the ratchet segment, so that the seat cushion is tilted forward and the ratchet segment is tilted forward. A locking plate is provided on the bracket for fixing the ratchet in a state in which the ratchet is disengaged from the ratchet, and the locking plate is detached from the ratchet in conjunction with anti-forward rotation of the ratchet segment. An angle adjustment mechanism for a rear seat cushion for an automobile, characterized in that the meshing between the ratchet and the ratchet segment is reset.