JPH0317706Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention mainly relates to seats installed in vehicles such as automobiles, and more specifically, the present invention relates to seats installed in vehicles such as automobiles. It concerns the type of seat.

[Conventional technology]

A conventional example is shown in FIG. In the figure, 1 is a seat part, 2 is a backrest part, a lower frame 3 is attached to the side surface of the seat part 1, and an upper frame 4 is attached to the side surface of the backrest part 2.
The upper frame 4 is rotatably attached to the lower frame 3 via a rotation shaft 41. A locking groove 42 is provided at the lower edge of the upper frame 4.
2 engages with a locking pawl 5 which is pivotally attached to the lower frame 3 via a rotation shaft 51. A handle 52 is protruded from the outer surface of the locking claw 5, and the locking claw 5 is urged upward by a spring 53.

In the above configuration, when the locking pawl 5 is manually pushed down to the dotted line position via the handle 52, the locking pawl 5 is disengaged from the locking groove 42 of the upper frame 4, and the upper frame 4, that is, the backrest portion 2 can be rotated. Then push or pull the backrest part 2 with your hand to tilt it forward or backward.

[Problem that the invention attempts to solve]

In the above-mentioned prior art, in a fully flat type seat, the backrest is not spring-biased so as to automatically fall forward. Therefore, it is necessary to remove the locking claw with one hand and fold down the backrest with the other hand. That is, there was a problem in that both hands were required to fold down the backrest.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention has a lower frame 3 attached to the side of the seat 1, an upper frame 4 attached to the side of the backrest 2, and the upper frame 4 rotatably attached to the lower frame 3. A locking groove 42 is provided on the lower edge of the upper frame 4, and a locking claw 5 pivoted to the lower frame 3 and urged upward is engaged with the locking groove 42. A guide pin 52A is extended from the side surface, and a lever 6 is pivotally attached to the outer surface of the upper frame 4, and a locking pin 7 with which the lever 6 abuts is provided on the outer surface of the upper frame 4 in front and behind the lever 6. Further, the lower edge of the lever 6 is provided with a guide groove 61 having gentle slopes 62 on both sides and into which the guide pin 52A of the locking pawl 5 fits.

[Effect]

The operation of the present invention based on the above configuration is as follows.

When the lever is pushed forward or backward, the guide pin of the locking claw escapes from the guide groove while being pushed by the slope. At the same time, the locking pawl is pushed downward via the guide pin and detached from the locking groove of the upper frame. The lever comes into contact with a front locking pin or a rear locking pin of the upper frame and pushes the backrest portion forward or backward via the locking pin.

[Effect of idea]

Therefore, in the present invention, simply pushing the lever forward or backward releases the engagement between the lower frame and the upper frame, allowing the upper frame to rotate relative to the lower frame.
In addition, since the backrest tilts forward or backward along with the lever, it is only necessary to operate the lever with one hand to tilt the backrest forward or backward.

〔Example〕

The present invention will be explained with reference to an embodiment shown in FIGS. 1 and 2. In the drawings, 1 is a seat part, 2 is a backrest part, and a lower frame 3
An upper frame 4 is attached to the side surface of the backrest portion 2, and the upper frame 4 is rotatably attached to the lower frame 3 via a rotation shaft 41. A locking groove 42 is provided at the lower edge of the upper frame 4, and a locking pawl 5 pivotally attached to the lower frame 3 via a rotation shaft 51 engages with the locking groove 42. A guide pin 52A is extended from the outer surface of the locking claw 5, and the locking claw 5 is urged upward by a spring 53. A lever 6 is further pivotally attached to the upper frame 4 via a rotating shaft 41.
The lower edge of the lever 6 has a gentle slope 6 on both sides.
A guide groove 61 having 2,62 is provided,
The guide pin 52A of the locking pawl 5 fits into the guide groove 61. Further, on the outer surface of the upper frame 4, locking pins 7, 7 are provided on the front and rear sides of the lever 6, respectively, with which the lever 6 comes into contact.

In the above configuration, when the lever 6 is tilted forward as shown in FIG. The locking pawl 5 is pushed downward via the guide pin 52A and the spring 5
The upper frame 4 rotates downward against the elasticity of the upper frame 4, and separates from the locking groove 42 of the upper frame 4. Thus, upper frame 4 is lower frame 5
The lever 6 contacts the front locking pin 7 of the upper frame 4 and pushes it forward, and the backrest part 2 falls forward via the upper frame 4. When folding the backrest portion 2 backward, the lever 6 is similarly folded backward.

[Brief explanation of drawings]

Figures 1 and 2 are side views of the reclining mechanism portion of an embodiment of the present invention; Figure 1 shows the normal state, Figure 2 shows the forward-folded state, and Figure 3 is a side view of the conventional example. be. In the figure, 1... Seat part, 2... Backrest part, 3... Lower frame,
4... Upper frame, 5... Locking claw, 6... Lever, 42... Locking groove, 52A... Guide pin, 61... Guide groove, 62... Inclined portion.

Claims (1)

[Scope of utility model registration request] A lower frame is attached to the side of the seat, an upper frame is attached to the side of the backrest, the upper frame is attached rotatably, a locking groove is provided on the lower edge of the upper frame, and a locking groove is provided in the lower edge of the upper frame. engages a locking pawl that is pivoted to the lower frame and is urged upward;
A guide pin is extended from the outer surface of the locking pawl, a lever is pivotally attached to the outer surface of the upper frame, locking pins with which the lever abuts are extended to the outer surface of the upper frame in front and behind the lever, and further A reclining mechanism for a seat, characterized in that the lower edge of the lever is provided with a guide groove having gentle slopes on both sides and into which a guide pin of a locking pawl fits.