JPH0357151Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a reclining seat device used for a vehicle seat or the like.

A bracket is attached to each of the seat cushion and the seat back, and both brackets are mutually rotatably supported by a support shaft, and an arc-shaped first gear centered on the support shaft is attached to one of the brackets to rotate or slide against the other. Reclining seat devices are widely used in which a movable second gear is attached and can be freely engaged with and disengaged from the first gear to adjust the angle of the seat back.

When these are used in a vehicle, particularly a two-door vehicle, if an occupant comes into contact with the above-mentioned reclining seat device when getting on or off the rear seat, it is not desirable for safety if the flange portion of the bracket is exposed. The present invention is an attempt to solve this problem, and aims to prevent this problem by attaching a resin protector to the edge of the reclining seat device, and also to improve the ease of assembling the protector. be.

A detailed explanation will be given below with reference to the drawings.

Figures 1A to 7C show embodiments of the present invention.

The reclining seat device is designated as a whole by 2 and is mainly composed of a first hinge bracket 4, a second hinge bracket 6, a support shaft 7, a lock member 8, and an operating lever 10.

The first hinge bracket 4 has a split circular opening 4c in the center to which the support shaft 7 is fixed, and an arcuate hole 4e and an arcuate first gear portion 4d are formed around the opening 4c. It is adapted to be screwed to the seat cushion through two mounting holes 4a and 4b. The offset portion 4f similarly extends in a substantially arc shape centered on the aperture 4c, and is connected to the two mounting holes 4.
The first surface 4h including the a and 4b and the second surface 4i including the opening 4c, the arcuate hole 4e, and the first gear portion 4d are offset from each other by approximately the thickness of the first hinge bracket.

The second hinge bracket 6 includes a second surface 4i of the first hinge bracket, a base portion 6g that accommodates the lock member 8, etc., and an offset portion 61 from the base portion 6g.
The base part 6g has a circular hole 6a through which the support shaft 7 passes, and a stopper pin 18, which will be described later, is attached to the base part 6g. A circular hole 6c for the support shaft 9 of the lock member 8 and a circular hole 6d for the support shaft 11 of the operating lever 10 are provided. The periphery of each hole 6a, 6b, 6c, and 6d is pressed to prevent contact with other parts. Further, an arcuate surface press 6j is provided to prevent a second gear portion 8b of the locking member 8, which will be described later, from shifting in the thickness direction. A rib 6i is provided around the entire circumference of the second hinge bracket 6, and the edge of the rib 6i extends as it is to form a flange 6k.

The lock member 8 is rotatably attached to a support shaft 9 fixed to a circular hole 6c of the second hinge bracket 6 through a circular hole 8a, and is attached to the first hinge bracket 4.
A substantially arc-shaped second gear portion 8b that meshes with the first gear portion 4d of the lock member 8 slides in sliding contact with a circular cam 12b of the operating lever 10, which will be described later, to lock the locking member 8 with the first gear portion 4d. First cam surface 8 to press
c, and a second cam surface 8d that slides in contact with the circular cam 12b and drives in a direction away from the first gear portion 4d.
Equipped with.

The operating lever 10 has a lever base 14 that is entirely covered by a knob 16 at one end of a support shaft 11 that is supported in a circular hole 6d of the second hinge bracket 6, and a circular cam portion 12b and a lever spring 26 at the other end. The cam body 12 is assembled by fitting the support shaft 11 into the circular hole 12a.

The holder plate 17 supports the support shafts 7, 9, 11 and the first hinge bracket 4 of the stopper pin 18.
Then, the first hinge bracket 4, lock member 8, and cam body 12 are attached to the second hinge bracket by caulking the opposite ends of the attachment ends to the second hinge bracket 6 into the circular holes 17a, 17c, 17d, and 17b, respectively. 6 and the holder plate 17, and the support shafts 7, 9, 11 and the stopper pin 18 are supported on both sides to create a structure strong against loads. In combination with the arc-shaped surface push 6j of the second hinge bracket 6, consideration is given to preventing the meshing area between the first gear portion 4d and the second gear portion 8b from decreasing. The hook 17h of the return spring 20, which will be described later, is cut and raised from the approximate center of the holder plate 17, and the hook 17g of the lever spring 26 is formed between the circular hole 17d of the operation lever 10 and the circular hole 17c of the lock member 8. It is extended to the middle part. The bent piece 17i is a stopper for the upward rotation of the locking member 8.

The return spring 20 is a spiral plate spring, and its inner end is inserted into the split groove 7a formed in the support shaft 7 fixed to the first hinge bracket 4.
The outer end is attached to the hook 17h of the holder plate 17, which is integral with the hinge bracket 6, and constantly biases the second hinge bracket 6 in a direction in which the seat cushion is tilted forward.

The lever spring 26 connects the hook portion 12c of the cam body 12 and the hook 17g of the holder plate 17.
The cam body is always attached in a clockwise direction.

The spring cover 22 has a shape that roughly covers the return spring 20, and includes three projecting pieces 2.
The return spring 20 is assembled by locking the return springs 2a, 22b, and 22c inside the return spring 20. In addition, 22f is a recessed part which accommodates the support shaft 7, 22h is a connection part with the protector 24 mentioned later, and 22g is a recessed part which accommodates the support shaft 9.

The protector 24 is integrally molded continuously with the spring cover 22, and has a fitting groove 24 that fits with the edge of the flange 6k so as to cover the peripheral edge of the flange 6k on the lower side of the second hinge bracket 6.
It has a U-shaped cross section and has four locking claws 24.
b, 24c, 24d, 24f are the flange 6k
Four locking recesses 6p, 6q, provided on the periphery of the
It is assembled by being snap-locked to 6r and 6s.

In the normal state, the second gear portion 8b of the lock member 17 is rotated by the circular cam portion 12b of the cam body 12, which is biased clockwise by the tension of the lever spring 26, so that the second gear portion 8b of the lock member 17 is rotated toward the first cam surface 8c of the lock member 17. When pressed, it is firmly engaged with the first gear portion 4d of the first hinge bracket 4, and the first
The angle between the seat cushion fixed to the hinge bracket 6 and the seat bag fixed to the second hinge bracket 6 is kept constant.

When the operating lever 10 is rotated counterclockwise,
The circular cam portion 12b of the cam body 12 is connected to the lock member 8.
The lock member 8 is rotated clockwise, and the first gear part 4d and the second gear part 8b are disengaged, and the seat bag becomes rotatable relative to the seat cushion. . At this time, the return spring 20 biases the seat back in the forward direction, and at the time of adjustment, it comes into contact with the back of the occupant with an appropriate load, so that the adjustment can be easily performed. In addition, when getting in and out of the rear seat, use the operating lever 10.
When rotated, the seat back will automatically come to the most forward position. Note that the rotation between the first hinge bracket 4 and the second hinge bracket 6 is
It is regulated by an arcuate hole 4e of the gear bracket 4 and a stopper pin 18 fixed to the second hinge bracket.

The present invention includes a first hinge bracket having a first gear part disposed on the circumference, and a lock member having a second gear part which is actuated by an operating lever and can be freely engaged with and detached from the first gear part. two hinge brackets, a support shaft rotatably connecting the first hinge bracket and the second hinge bracket, a return spring having one end attached to the first hinge bracket and the other end attached to the second hinge bracket; A reclining seat device having a cover enclosing a return spring, wherein a flange is formed on the periphery of the second hinge bracket, a fitting groove that fits with the edge of the flange, and a locking recess provided on the periphery of the flange. A resin protector, which has a locking pawl and is integrally molded with the cover of the return spring, is fixed to the lower side of the flange, so that the occupant cannot get in or out of the rear seat. It is safe even if you accidentally come into contact with the reclining seat device, and the protector can be assembled to the second hinge bracket at the same time as the return spring cover is assembled. Assembling is easy because it only needs to be locked into the recess. Therefore,
In addition to improving work efficiency, there is no need to worry about parts falling off or forgetting to assemble them, and screws, etc. for assembling the protector can be omitted, which is advantageous in terms of cost and parts management. The practical effects are enormous.

[Brief explanation of drawings]

FIG. 1A is a front view showing the reclining seat device of the present invention, FIG. 1B is a partial sectional view of the same, and FIG.
The figure is a front view of the first hinge bracket, FIG. 2B is a cross-sectional view taken along line A-A in FIG. 2A, FIG. 3A is a front view of the second hinge bracket,
Figure C, Figure 3D, and Figure 3E are viewed from arrow B, respectively.
Figure 4 is a front view showing the lock member, Figure 5 is a front view showing the cam body, and Figure 6 is a front view showing the cam body.
Figure A is a front view showing the same holder plate, Figure 6B,
Figure C is a diagram showing arrow views B and C in Figure 6A, respectively.
Figure A shows the spring cover and protector.
7B and 7C are diagrams showing arrow views B and C, respectively. 2... reclining seat device, 4... first
Hinge bracket, 6...Second hinge bracket, 8...Lock member, 10...Operation lever, 4
d...first gear part, 8b...second gear part, 20...
...Spring, 22...Cover, 24...Protector.

Claims (1)

[Claims for Utility Model Registration] (1) A first gear having a first gear portion disposed on the circumference.
a second hinge bracket comprising a hinge bracket, a locking member having a second gear part that is actuated by an operating lever and is freely engageable and detachable from the first gear part; and the first hinge bracket and the second hinge bracket are rotatable. A reclining seat device having a support shaft connected to the seat, a return spring having one end fixed to the first hinge bracket and the other end fixed to the second hinge bracket, and a cover enclosing the return spring,
A flange is formed on the periphery of the second hinge bracket, the flange has a fitting groove that fits with the periphery of the flange, and a locking pawl that is locked in a locking recess provided on the periphery of the flange, and the return spring A reclining seat device characterized in that a resin protector integrally molded with the cover is attached to the lower side of the flange. (2) The first hinge bracket is offset within the second hinge bracket in a direction in which the first hinge bracket is accommodated in the flange. Reclining seat device.