JPH052123Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a rear seat for an automobile.

[Conventional technology]

Automobile seats are designed so that the backrest can be reclined to provide a comfortable sitting position or a relaxed posture, and various structures have been devised (for example, Utility Model Application No. 60-50846).
Publication No.).

However, when reclining the backrest of the rear seat, the following problems occur.

That is, in the conventional example shown in FIG. 3, the rear seat 2 consists of a cushion 3 and a backrest 4, and the floor consists of a front floor 6 on which the cushion 3 is installed, and a rear floor 8 which is continuous with the cushion 3 via a step 7. A reclining hinge mechanism 10 supporting the backrest 4 is attached to the front end of the rear floor 8, that is, at the corner with the stepped portion 7.

When reclining the backrest 4 in this structure, as shown by the chain line, depending on the shape of the floor, the size of the hinge mechanism 10, etc., the backrest 4 is fixed at the lower edge 4a of the backrest 4 and the front floor 6. A step 12 is created between the cushion 3 and the upper surface 3a of the cushion 3.

Therefore, there is a problem in that the seating comfort of the occupant from the cushion 3 to the backrest 4 is significantly impaired.

[Purpose of invention]

This invention solves the above-mentioned problem by providing an automobile rear seat that does not create a step between the cushion and the backrest when reclined.

[Structure of the idea]

This idea uses front and rear bell crank-shaped links that are bent toward the rear of the vehicle, pivoting on front and rear brackets placed on the floor.
The front and rear portions of the cushion of the rear seat are supported by the pins on the upper end side, and the pins on the lower end side are connected to each other by interlocking links, so that the cushion can be raised and lowered by synchronous rotation of the front and rear links. A drive link extending downward from the hinge center in the vertical direction of the backrest is fixed to the backrest of the rear seat which is supported by the hinge center of a reclining hinge mechanism attached to the floor, and a long hole is formed in the lower end of the drive link. A rear seat for an automobile is characterized in that a pin on the upper end side of the rear link is movably fitted into the elongated hole.

〔Example〕

The details of this invention will be explained below with reference to the embodiment shown in FIG.

The rear seat 16 is composed of a cushion 17 and a backrest 18, and the floor is composed of a front floor 20 located below the cushion 17 and a rear floor 22 that is continuous through a step 21.

A front bracket 24 and a rear bracket 25 are attached to the front floor 20 to support the cushion 17.
A bell crank-shaped front link 28 (having a pin 29 at one end and a pin 30 at the other end) is rotatably supported on the front bracket 24 by a pin 31, and a rear link 28 is attached to the rear bracket 25. , a bell crank-shaped rear link 34 (equipped with a pin 35 at one end and a pin 36 at the other end) is rotatably supported by a pin 37.

A pin 29 at one end of the front link 28 and a pin 35 at one end of the rear link 34 support the front and rear parts of the cushion 17 (frame), respectively.
Further, the pin 30 at the other end of the front link 28 and the pin 36 at the other end of the rear link 34 are connected to each other by an interlocking link 38.

On the other hand, the reclining hinge mechanism 41 is attached to the front end of the rear floor 22, that is, at the corner with the stepped portion 21, and supports the backrest 18 at the hinge center 42 of the hinge mechanism 41. It also includes a hinge lever 43 for fixing the backrest 18.

Furthermore, a drive link 45 extending downward from the hinge center 42 is provided. This drive link 4
5 is integrally fixed to the backrest 18 via a hinge center 42. A long hole 45a is provided in the drive link 45, into which the pin 35 at one end of the rear link 34 is fitted freely.

Therefore, when the hinge lever 43 is released, the backrest 18 becomes rotatable around the hinge center 42. Then, when the backrest 18 is reclined rearward as shown by the chain line, the drive link 45 also moves around the hinge center 42.
Rotate clockwise as shown by the chain line.

Then, due to the rotation of the drive link 45, the pin 35 fitted into the elongated hole 45a is pushed up.
Rear link 34 pivots around pin 37 in a counterclockwise direction. At this time, via the interlocking link 38,
Synchronized with the rear link 34, the front link 38 rotates counterclockwise around the pin 31 and rotates around the pin 29.
is displaced upward.

Due to this upward movement of pin 29 and pin 35,
The front and rear portions of the cushion 17 rise at the same time, and the upper surface portion 17a comes to be located above the E dimension as shown by the chain line. and the lower edge 1 of the back crest 18
8a without forming a step.

[Effect of idea]

This invention is as described above, and since there is no step between the cushion and the backrest when the backrest is reclined, the user can sit comfortably and fully relax.

Further, as shown in FIG. 2, the side surface of the backrest 18 is in contact with the trim 48 of the rear quarter section in the vehicle interior, and when the reclined backrest 18 is returned to its original position, a large frictional force F is generated. Even if a return spring is installed, sufficient restoring torque cannot be obtained. However, in this invention, when the occupant's seating load W is applied to the cushion 17, a counterclockwise rotational force K is generated in the drive link 45 in conjunction with this, and a restoring torque M is generated in the backrest 18 that is fixedly attached to the cushion 17. This makes the restoration operation easier.

Furthermore, when the backrest 18 is reclined, the upper surface of the cushion 17 is displaced and the position of the occupant's eyes is raised, which provides various advantages such as being able to see clearly outside the vehicle and preventing car sickness.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a rear seat showing an embodiment of this invention, FIG. 2 is an explanatory diagram showing restoration after reclining, and FIG. 3 is an explanatory diagram of a conventional rear seat. 16...Rear seat, 17...Cushion, 1
8...Back crest, 20...Front floor, 22
...Rear floor, 24...Front bracket, 25
...Rear bracket, 28 ...Front link, 34
... Rear link, 35 ... Pin, 38 ... Interlocking link, 41 ... Reclining hinge mechanism, 42
... Hinge center, 45 ... Drive link, 4
5a...Long hole.

Claims (1)

[Scope of Claim for Utility Model Registration] Bell crank-shaped front and rear links bent toward the rear of the vehicle body are pivoted to brackets provided on the front and rear on the floor, and the upper end of each The front and rear portions of the rear seat cushion are supported by pins, and the lower end pins are connected to each other by interlocking links, so that the cushion can be raised and lowered by synchronous rotation of the front and rear links, and is attached to the floor. A drive link extending downward from the hinge center in the vertical direction of the backrest is fixed to the backrest of the rear seat supported by the hinge center of the reclining hinge mechanism, and a long hole is provided at the lower end of the drive link, A rear seat for an automobile, characterized in that a pin on the upper end side of the rear link is movably inserted into the hole.