JPH0520198Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a vehicle seat. More specifically, the present invention relates to a seat cushion attached to a vehicle floor via a front-back sliding mechanism, and a seat cushion of the seat cushion. The present invention relates to a vehicle seat including a seat back which is hinged at the rear end and whose upper part is attached to a back panel of a vehicle body so as to be movable in the vertical direction via an adjuster having an elongated hole extending in the vertical direction.

[Conventional technology]

Conventionally, as shown in FIG. 4, in the case of a seat 1 used as a rear seat of a vehicle, etc., when the seat back 2 is tilted backwards, it is sufficiently tilted backwards due to the presence of a back panel 4 etc. of the vehicle body. Therefore, the seat bag 2 and the seat cushion 3 are connected by the hinge part 8, the seat cushion 3 is moved in the front and rear direction by the front and rear slide mechanism 5, and the seat bag 2 is moved through the elongated hole 7 extending in the vertical direction. There is a device that moves vertically using an adjuster 6 having a
Special Publication No. 59-20491).

[The problem that the idea aims to solve]

However, in the conventional seat 1, the lower part of the seat back 2 does not move forward unless the seat cushion 3 is moved forward by the front-rear slide mechanism 5, and when the seat cushion 3 is moved forward, the seat cushion 3 moves forward. This had the disadvantage that the space was small.

The purpose of this invention is to be able to support the seated person in a stable state in a relaxed posture, and even when the seat cushion is not moved forward, the middle part of the seat back can be moved forward to properly support the seated person. To provide a vehicle seat that can be held.

[Means to solve the problem]

This invention was made in view of the above-mentioned problems, and consists of a seat cushion attached to the vehicle floor via a front-rear sliding mechanism, a lower part hinged to the rear end of the seat cushion, and an upper part connected to the rear panel of the vehicle body. A vehicle seat is provided with a seat back that is movably mounted in the vertical direction through an adjuster having a long hole extending in the vertical direction, and the seat back is formed of an upper structure and a lower structure, and the seat back is formed of an upper structure and a lower structure; The structure and the lower structure are rotatably connected by a hinge part, the upper structure is attached to the back panel via an adjuster, and the lower structure is attached to the rear of the seat cushion by a hinge provided with a locking mechanism. It is characterized in that it is rotatably connected by a section.

[Effect]

According to the present invention, the seat back is formed of an upper structure and a lower structure, the upper structure and the lower structure are rotatably connected by a hinge part, and the lower structure is attached to the rear part of the seat cushion. Since they are rotatably connected by a hinge with a locking mechanism, even when the seat cushion cannot be moved back and forth by the front-back sliding mechanism, the middle part of the seat bag can be moved in the front-back direction by rotating the hinge with a locking mechanism. It is something that can be adjusted.

〔Example〕

The vehicle seat according to the present invention will be described in detail below with reference to the drawings.

1 and 2 schematically show an embodiment of the present invention, and this vehicle seat 21 includes a seat cushion 22 attached to a vehicle body floor 25 via a longitudinal slide mechanism 24, It is formed from a seat back 23 which is hinged to the rear end of the seat cushion 22 and whose upper part is attached to a back panel 26 of the vehicle body so as to be movable in the vertical direction via an adjuster 29 having an elongated hole 28 extending vertically. has been done.

The adjuster 29 has a pin member 27 formed protruding from a bracket 27 fixed to the back panel 26.
a, and the elongated hole 28 formed in the seat back 23 and extending in the vertical direction, and the pin member 27
a is slidably fitted into the elongated hole 28.

The seat back 23 is formed of an upper structure 31 and a lower structure 32. A pair of left and right hinge brackets 36 are formed at the bottom of a frame 35 of the upper structure 31, and a pair of left and right hinge brackets 36 are formed at the upper part of the frame 37 of the lower structure 32. is a pair of left and right hinge brackets 3
8 are formed and these hinge brackets 36,3
8 are rotatably connected by a hinge portion 34 hingedly connected by a hinge pin 39.

The lower part of the frame 37 of the lower structure 32 of the seat bag 23 and the rear end of the frame (not shown) of the seat cushion 22 are rotatably connected by a hinge portion 41 having a locking mechanism 42.
That is, a hinge bracket 44 is fixed to the lower part of the lower structure 32 of the seat bag 23, a hinge shaft 45 is fixed to the hinge bracket 44, and the hinge shaft 45 is connected to a hinge formed at the rear end of the frame of the seat cushion 22. The hinge shaft 45 is rotatably held by a bracket 46, and supported by a lock mechanism 42 fixed to the hinge bracket 46 so as to be able to adjust the rotation angle.

The lock mechanism 42 can adopt various conventionally known mechanisms, for example, lock teeth are formed on the outer periphery of the hinge shaft 45, and a lock pawl that meshes with the lock teeth is attached to the hinge bracket 46, and the lock pawl is attached to the hinge bracket 46. A locking mechanism is formed by providing a spring that always biases the locking device in the locking direction, and an operating lever 48 that moves the locking pawl in the unlocking direction against the biasing force of the spring.
In addition, a brake unit or a double ratchet used as a seat lifter mechanism or a locking mechanism for a longitudinally movable headrest can be used.

In such a configuration, when the seat cushion 22 is not moved back and forth by the front and rear slide mechanism 24, the lock mechanism 42 of the hinge section 41 is unlocked, and the seat cushion 22 is moved in the middle part of the seat back 23 as shown by the imaginary line in FIG. The hinge portions 34 of certain upper structures 31 and lower structures 32 can be moved forward. Attach the lower structure 32 to the hinge bracket 4
4, the lower part of the upper structure 31 moves forward according to the movement of the hinge part 34, and the upper part of the upper structure 31 is moved downward by the adjuster 29. The seat bag 23 is moved, and the seat bag 23 is bent into a dogleg shape when viewed from the side.

Further, if the seat cushion 22 is moved forward by the front-rear slide mechanism 24 and the lock mechanism 42 is released at this time, the shape of the seat 21 can be adjusted by the upper structure 31 and the lower structure 32 of the seat cushion 22 and the seat back 23. It can be formed into a curved shape as a whole, and can support the seated person with a sense of stability.Also, if the seat cushion 22 is moved forward by the front and rear slide mechanism 24 while the lock mechanism 42 is in the locked state, the seat cushion 22 and the seat back can be moved forward. 23 can be moved forward while maintaining the inclination angle with the lower structure 32.

[Effect of idea]

The above is the configuration of one embodiment of the vehicle seat according to the present invention. According to this configuration, the intermediate portion of the seat back can be moved forward without moving the seat cushion forward by the front-back sliding mechanism. To obtain a vehicle seat capable of maintaining a relaxed posture without reducing the leg space of a seated person, and capable of obtaining various seat configurations by advancing the seat cushion by a front-back sliding mechanism and adjusting a locking mechanism. I can do it.

[Brief explanation of the drawing]

1 to 3 schematically show an embodiment of a vehicle seat according to the present invention, in which FIG. 1 is a perspective view of the seat, FIG. 2 is an explanatory side view, and FIG. FIG. 4 is a partially enlarged perspective view of a conventional seat. In the figure, 21... Vehicle seat, 22... Seat cushion, 23... Seat bag, 24... Front and rear slide mechanism, 25... Vehicle body floor, 26...
Back panel, 29... Adjuster, 31... Upper structure, 32... Lower structure, 34... Hinge part,
36, 38...hinge bracket, 41...hinge portion, 42...lock mechanism, 44, 46...hinge bracket, 45...hinge shaft.

Claims (1)

[Scope of utility model registration request] The seat cushion is attached to the vehicle floor via a longitudinal sliding mechanism, and the lower part is hinged to the rear end of the seat cushion, and the upper part is attached to the back panel of the vehicle body through an adjuster having a long hole extending vertically. In a vehicle seat comprising a seat back attached so as to be movable in a direction, the seat back is formed of an upper structure and a lower structure, and the upper structure and the lower structure are rotatable by a hinge part. The upper structure is attached to the back panel via an adjuster, and the lower structure is rotatably connected to the rear part of the seat cushion by a hinge having a locking mechanism. vehicle seat.