JP2002153344A - Mounting structure of reclining device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mounting structure of a reclining device for reducing a lateral swing of a seat without increasing thickness or reducing comfortableness of a vehicle. SOLUTION: This mounting structure comprises a reclining mechanism 27 structured longitudinally turnably, and a lower bracket 29 fixed to the lower side of the reclining mechanism 27. In the mounting structure of the reclining device, the reclining mechanism 27 is mounted on the side surface of a seat back frame 96, and the lower bracket 29 is mounted on the side surface of a seat cushion frame 75. The side surface 61 of a support bracket 23 is fixed to the lower bracket 29, the mounting part 77 of a back surface 63 is fixed to the back surface 75a of the seat cushion frame 75. The back end of the support bracket 23 is extended inside in the car width direction, and the extended end may be fixed to the back surface 75a of the seat cushion frame 75.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a mounting structure for a reclining device.

[0002]

2. Description of the Related Art FIG. 8 is a schematic view of a retractable seat 101 having a reclining mechanism as viewed from a side. The retractable seat 101 includes a seat cushion 103, a seat back 105, and a headrest 107. The seat back 105 is rotatably supported by the seat cushion 103 via a reclining device 109.

As shown in FIG. 9, the reclining device 109 includes a reclining mechanism 111 and a lower bracket 113.
Upper mechanism plate 121 and lower mechanism plate 12
3 is comprised. This upper mechanism plate 121
Is attached to the seat back frame 125 as shown in FIG. 10, when the release lever 127 (see FIG. 9) is pulled to release the locked state of the reclining mechanism, the upper mechanism plate 121 rotates, As shown by an arrow R in FIG. Also, lower bracket 1
13 is fixed to the seat cushion frame 129, and the seat back frame 125 has to support the weight of the occupant, so that its basic skeleton has a strong structure.

Here, the reclining mechanism 111
The upper mechanism plate 121 and the lower mechanism plate 123 are both formed of a strong metal member having a large thickness, and are caulked by a support plate (not shown). That is, the rigidity was very high in the direction of arrow F shown in FIG. on the other hand,
The lower bracket 113 is provided with the reclining mechanism 111.
10, the rigidity was weak in the direction of arrow F as shown in FIG. Therefore, when the vibration of the vehicle body generated during the traveling of the vehicle is large, there is a possibility that the seat back frame 125 bends in the vehicle width direction as shown by a two-dot chain line.

[0005] In order to suppress this deflection, for example, there is a method of increasing the plate thickness of the lower bracket 113 to improve rigidity. However, this method increases the weight of the reclining device 109 and is not preferable in terms of cost. Was. Also, the length Z of the lower bracket 113 in the front-rear direction.
Although there is a method of increasing the size (see FIG. 9), there is a possibility that the ride comfort and getting on and off of the occupant may be reduced.

[0006]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and provides a mounting structure of a reclining device for reducing the roll of a seat without increasing the thickness of the vehicle and reducing the riding comfort of the vehicle. The purpose is to:

[0007]

In order to achieve the above object, a mounting structure for a reclining device according to the present invention comprises: a reclining mechanism portion rotatable in a front-rear direction;
A lower bracket fixed to a lower side of the reclining mechanism, wherein the reclining mechanism is mounted on a side surface of a seat back frame, and the lower bracket is mounted on a side surface of a seat cushion frame. One mounting surface of the support bracket having two mounting surfaces is fixed to the lower bracket, and the other mounting surface is fixed to the back side of the seat cushion frame.

[0008] In one aspect of the present invention, one mounting surface of the support bracket is sandwiched and fixed between the lower bracket and the seat back frame.
Further, in another aspect of the present invention, after one of the mounting surfaces of the support bracket is fixed to the lower bracket in advance, the support bracket and the lower bracket are fixed to the seat cushion frame. Further, in still another aspect of the present invention, a claw is provided at a lower end of one of the mounting surfaces of the support bracket, and after the lower end of the lower bracket is placed on the claw, the support bracket is fixed to the lower bracket. are doing.

The mounting structure for a reclining device according to the present invention includes a reclining mechanism portion rotatable in the front-rear direction and a lower bracket fixed to a lower side of the reclining mechanism portion. In a mounting structure of a reclining device in which a mechanism is mounted on a side surface of a seat back frame and the lower bracket is mounted on a side surface of a seat cushion frame, a rear end of the lower bracket is extended inward in a vehicle width direction, and the extension is performed. Is fixed to the back side of the seat back frame.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing an automobile seat 1 provided with a reclining device having a mounting structure according to the present invention.

The vehicle seat 1 includes a seat cushion 3 attached to a floor panel side via a seat cushion frame and rails (not shown), and a seat back 5 configured to be able to lean forward with respect to the seat cushion 3.
A reclining device 7 having a function of rotatably supporting the seat back 5 on the seat cushion 3 and holding the seat back 5 at a fixed angle or releasing this holding state; and a top portion of the seat back 5. And a headrest 9 disposed on the vehicle. The reclining device 7 is provided on both left and right ends of the lower end of the seat back in a state covered by the cover 11. As shown in FIG. 2, the reclining mechanism 27, the lower bracket 29,
A support bracket 23 and a release lever 25 are provided.

As shown in FIG. 2, the reclining device 7 is provided with a reclining mechanism 27 on the upper side and a lower bracket 29 on the lower side.
Has been fixed through. The lower bracket 29 includes:
As shown in FIG. 3, it is a plate-like body extending in the front-rear direction, and front and rear edges are formed on flanges 33 and 35 bent inward in the vehicle width direction. Further, two bolt holes 37, 39 are formed at the lower end at an interval in the front-rear direction. Of these bolt holes 37, 39, a rivet hole 41 is provided above the rear bolt hole 39. Are drilled.

The reclining mechanism 27
Are the upper mechanism plate 43 and the lower mechanism plate 4
The lower mechanism plate 45 is caulked at the caulking portion 31 above the lower bracket 29 by rivets or the like. The upper mechanism plate 43 is rotatably supported by the lower mechanism plate 45 via a lock portion 47, and two bolt holes 49 and 51 are formed in the upper end thereof. .

On the other hand, the support bracket 23 is shown in FIG.
As shown in FIG. 5, a substantially triangular plate material is bent at a substantially right angle so as to be substantially L-shaped, and includes a side surface 61 extending in the front-rear direction and a rear surface 63 extending in the vehicle width direction. . A rivet hole 65 is provided at the upper end of the side surface 61.
However, bolt holes 67 and 69 are drilled at the lower end,
The rivet hole 65 and the bolt holes 67 and 69 correspond to the rivet hole 41 and the bolt holes 37 and
39 are provided at positions corresponding to each other. Also,
At the lower end of the side surface 61, two claws 71, 73 projecting outward in the vehicle width direction and spaced apart in the front-rear direction.
Is provided. Since the claws 71 and 73 are bent in a substantially L-shape, the lower end of the lower bracket 29 can be placed.

Further, as shown in FIG. 5, the rear surface 63 has a mounting portion 77 fixed to the rear surface 75a of the seat cushion frame 75, and an obliquely rearward end from the vehicle width direction outer end 77a of the mounting portion 77. An inclined portion 79 that is bent and extends;
And a rear portion 81 which is bent from an outer end portion 79a of the inclined portion 79 on the outside in the vehicle width direction and extends outward in the vehicle width direction. The mounting portion 77 is provided with a bolt hole 83 used for fixing to the seat cushion frame 75.

Next, a description will be given of the structure of the vehicle seat 1 which is a counterpart to which the reclining device 7 is fixed. As shown in FIG. 6, the seat cushion 3 is provided with a seat cushion frame 75, and the seat back 5 is provided with a seat back frame 96. On the side of the seat cushion frame 75,
Bolt mounting holes 85 and 87 are formed at positions corresponding to the bolt holes 37, 67, 39 and 69 of the lower bracket 29 and the support bracket 23, and a weld nut 89 is formed on the back side of the bolt mounting holes 85 and 87. , 91 are fixed. Bolt mounting holes 93 and weld nuts 95 are also provided at both left and right ends on the back surface of the seat cushion frame 75. At the lower end of the seat back frame 96, bolt mounting holes 9 are provided at positions corresponding to the bolt holes 49 and 51 of the upper mechanism plate 43.
7, 98 are drilled, and a weld nut 100 is fixed to the back side of the bolt mounting hole 99.

The reclining device 7 described above is connected to the seat cushion frame 75 and the seat back frame 96.
The procedure for attaching to the device will be described with reference to FIG. First, the support bracket 23 is fixed to the lower bracket 29.
The lower ends of the lower bracket 29 are placed on the claws 71 and 73, and the rivet holes 41 and 65 are aligned with each other by positioning each other.
5. Caulking through rivets.

Next, the lower bracket 29 to which the support bracket 23 is fixed is fixed to the seat cushion frame 75. The bolt holes 37, 67, 39, 69 of the lower bracket 29 and the support bracket 23 are aligned with the bolt mounting holes 85, 87 on the side of the seat cushion frame, and the bolt holes 83 of the mounting portion 77 of the support bracket 23 are aligned with the seat cushion frame 75. 3 bolts 5 in this state.
3, 55, 57 with the respective weld nuts 89, 9
1,95.

Thereafter, the seat back 5 is lifted,
Bolt mounting holes 97, 9 of the seat back frame 96
8 is set to the bolt holes 49 and 5 of the upper mechanism plate 43.
1 and, in this state, the upper side mechanism plate 43
Bolts 59, 60 are inserted through the bolt holes 49, 51 of the seat back frame 96, and the weld nuts 99,
The seat back 5 can be attached to the seat cushion 3 via the reclining device 7 by adjusting the distance to 100.

The operation of the above embodiment will be described below. When the vehicle body swings in the left-right direction during traveling of the vehicle, the rolling load F is transmitted from the occupant to the seatback frame 96 via the seatback 5, as shown in FIG. Here, the reclining device 7 is connected to the seat cushion frame 75 via the support bracket 23.
Is fixed not only to the side surface 75b but also to the back surface 75a, so that the mounting strength of the reclining device 7 is extremely large.

Therefore, the roll load F transmitted to the seat back frame 96 is input to the reclining device 7, but the amount of lateral deflection of the reclining device 7 having improved mounting strength is reduced. Back 5
The magnitude of its own roll is also reduced. Further, since the mounting portion 77 of the support bracket 23 is fixed to the back surface 75a of the seat cushion frame 75, the seat back 5 does not interfere with the seat back 5 when the seat back 5 is tilted forward.

The present invention is not limited to the above-described embodiment, and various modifications and changes can be made based on the technical idea of the present invention. The side surface 61 of the support bracket 23 is disposed inside the lower bracket 29 in the vehicle width direction, that is, sandwiched between the lower bracket 29 and the side surface 75 b of the seat cushion frame 75. However, the side surface 61 of the support bracket 23 may be disposed outside the lower bracket 29 in the vehicle width direction.

The support bracket 23 is a lower bracket.
By caulking the ket 29 with rivets etc.
Fixed, but instead of this rivet, spot welding or
CO _Two To fix using arc welding such as welding
You may. Due to these spot welding and arc welding
If the support bracket 23 is
Lower bracket 2
It is also possible to improve the rigidity of No. 9. Further implementation
In the embodiment, the support bracket 23 is connected to the lower bracket
29, but provided separately from the rear side of the lower bracket 29.
The flange 35 extends inward in the vehicle width direction to provide a mounting surface.
The mounting surface on the back of the seat cushion frame 75.
75a.

[0024]

According to the present invention, there is provided a mounting structure for a reclining device, comprising: a reclining mechanism for rotating a seat back in a front-rear direction; and a lower bracket fixed to a lower side of the reclining mechanism. Attach the reclining mechanism to the side of the seat back frame,
In a mounting structure of a reclining device in which the lower bracket is mounted on a side surface of a seat cushion frame,
Since one mounting surface of the support bracket having two mounting surfaces is fixed to the lower bracket and the other mounting surface is fixed to the rear side of the seat cushion frame, the mounting portion of the reclining device to the seat cushion is Strength can be improved. In addition, it is possible to prevent the reclining device from bending when the vehicle is running, and to reduce the influence of vehicle body vibration. Further, since the other mounting surface of the support bracket is fixed to the seat cushion frame, it is possible to prevent the seat from swaying without impairing the getting on and off.

In one embodiment of the present invention, one of the mounting surfaces of the support bracket is sandwiched and fixed between the lower bracket and the seat back frame, so that the support bracket and the lower bracket are combined with the seat cushion frame. The mounting strength of the seat cushion frame can be improved while minimizing the increase in the number of assembly steps.

Further, in another aspect of the present invention, after one of the mounting surfaces of the support bracket is fixed to the lower bracket in advance, the support bracket and the lower bracket are fixed to the seat cushion frame. By fixing the support bracket and the lower bracket, which are small parts, in advance and forming a so-called assembly, it is generally easy to attach to the seat cushion frame, which is a large part. Further, in still another aspect of the present invention, a claw is provided at a lower end of one of the mounting surfaces of the support bracket, and after the lower end of the lower bracket is placed on the claw, the support bracket is fixed to the lower bracket. This facilitates positioning when fixing the support bracket to the lower bracket.

The mounting structure of the reclining device according to the present invention includes a reclining mechanism for rotating the seat back in the front-rear direction, and a lower bracket fixed to a lower side of the reclining mechanism. In a mounting structure of a reclining device in which a reclining mechanism is attached to a side surface of a seat back frame and the lower bracket is attached to a side surface of a seat cushion frame, a rear end of the lower bracket is extended inward in a vehicle width direction. Since the extended end is fixed to the back side of the seat back frame, the same effect as the support bracket, that is, the strength of the mounting portion of the reclining device to the seat cushion is improved without increasing the number of parts. Prevents the reclining device from flexing when the vehicle is running. In addition, without compromising the getting on and off of,
The effect of preventing the seat from shaking can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an automobile seat provided with a reclining device according to the present invention.

FIG. 2 is an exploded perspective view of the reclining device according to the present invention.

FIG. 3 is an enlarged perspective view of a reclining mechanism and a lower bracket shown in FIG. 2;

FIG. 4 is an enlarged perspective view of the support bracket shown in FIG. 2;

FIG. 5 is a plan view of the support bracket shown in FIG. 4;

6 is a perspective view showing a procedure for attaching the reclining device and the support bracket of FIG. 2 to a seat back frame and a seat cushion frame.

FIG. 7 is a conceptual diagram showing a state where a load is input to a seatback frame provided with the reclining device and the support bracket according to the present invention.

FIG. 8 is a schematic view of a vehicle seat provided with a reclining device having a conventional mounting structure.

9 is a perspective view of the reclining device shown in FIG.

FIG. 10 is a schematic diagram showing a state where a load is input to a frame provided with the reclining device of FIG. 8;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Automobile seat 3 Seat cushion 5 Seat back 7 Reclining device 9 Headrest 11 Cover 23 Support bracket 25 Release lever 27 Reclining mechanism part 29 Lower bracket 31 Caulking part 33,35 Flange 37,39,49,51,67,69,83 Bolt holes 41, 65 Rivet holes 43 Upper mechanism plate 45 Lower mechanism plate 47 Locking parts 53, 55, 57, 59, 60 Bolts 61 Side surfaces 63 Rear surfaces 71, 73 Claws 75 Seat cushion frame 77 Mounting portion 79 Inclined portion 81 Rear portion 85, 87, 93, 97, 98 Bolt mounting holes 89, 91, 95, 99, 100 Weld nut 96 Seat back frame

Claims (5)

[Claims] 1. A reclining mechanism for rotating a seat back in a front-rear direction, and a lower bracket fixed to a lower side of the reclining mechanism, wherein the reclining mechanism is attached to a side surface of a seat back frame. In a mounting structure for a reclining device in which the lower bracket is mounted on a side surface of a seat cushion frame, one mounting surface of a support bracket having two mounting surfaces is fixed to the lower bracket, and the other mounting surface is mounted on the seat cushion frame. A mounting structure for a reclining device, wherein the mounting structure is fixed to the rear side of the device. 2. The mounting structure for a reclining device according to claim 1, wherein one of the mounting surfaces of the support bracket is sandwiched and fixed between the lower bracket and the seat back frame. 3. The reclining device according to claim 2, wherein one of the mounting surfaces of the support bracket is fixed to a lower bracket in advance, and then the support bracket and the lower bracket are fixed to a seat cushion frame. Mounting structure. 4. A nail is provided at a lower end of one mounting surface of the support bracket, and the lower end of the lower bracket is placed on the nail, and then the support bracket is fixed to the lower bracket. Claim 2 or 3
The mounting structure of the reclining device according to 1. 5. A reclining mechanism for rotating the seat back in the front-rear direction, and a lower bracket fixed to a lower side of the reclining mechanism, wherein the reclining mechanism is attached to a side surface of the seat back frame. A mounting structure of a reclining device in which the lower bracket is mounted on a side surface of a seat cushion frame, a rear end of the lower bracket is extended inward in a vehicle width direction, and the extended end is a rear surface of the seat back frame. The mounting structure of the reclining device, which is fixed to the side.