JP3358367B2 - Seat cushion structure for vehicle seat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat cushion structure for a vehicle seat capable of improving rigidity and riding comfort.

[0002]

2. Description of the Related Art FIG. 9 shows a front seat for a vehicle.
1 and a seat back 102 provided with a reclining device (not shown). Seat cushion 10
1 is a pair of side frames 10 as shown in FIG.
3 are connected by a front frame 104, and the rear frames of the side frames 103 are connected by a rear frame 105.
To form a cushion frame 106, and a cushion member 107 is assembled on the upper surface side of the cushion frame 106 as shown in FIG. 11 to form a seat cushion body 108, and the surface of the seat cushion body 108 is made up of a skin material. The cover 109 is formed.

[0003]

However, according to the prior art, when the rigidity of the side surface of the vehicle seat 100 is improved, the cushion frame 106 is enlarged, and as shown in FIG. Thus, it is necessary to make the thickness m of the cushion material 107 smaller than that shown in FIG. Further, when the size of the cushion frame 106 is increased, the equipment cost is high. Also, parts management becomes troublesome as the number of parts increases.

[0004] The present invention solves the above problems, improves the rigidity, can reduce the cross-sectional shape of the cushion frame and increase the thickness of the cushion material to improve the riding comfort. It is intended to provide a cushion structure.

[0005]

According to the present invention, in order to solve the above-mentioned problems, the front ends of a pair of side frames are connected by a front frame, and the rear ends of the side frames are connected by a rear frame. , to form a cushion frame, the seat cushion structure of a vehicle seat the upper surface to form a seat cushion body covered with a cushion material of the cushion frame, a U-shaped cross section
U-shaped section between the rear ends of the side frames
The two ends of the rear frame are joined at a corner between the rear end of the side frame and one end of the rear frame.
A reinforcing material is provided inside the U-shaped cross section of the side frame and the rear frame, and the wall portion and the bottom surface in the height direction of the reinforcing material are
It is arranged in accordance with the inside of the U-shaped cross section . Also,
According to the present invention, a front frame connects the front ends of a pair of side frames with each other and a rear frame connects the rear ends of the side frames with each other to form a cushion frame. in the seat cushion structure of the vehicle seat forming a seat cushion body covered with wood, a U-shaped cross section
U-shaped section between the rear ends of the side frames
The present invention is characterized in that both ends of the rear frame are joined together, and a reinforcing member joined between the upper surface and the lower surface of the side frame is provided inside the U-shaped cross section of the side frame disposed outside. Furthermore, the present invention connects the front ends of the pair of side frames with a front frame, and connects the rear ends of the side frames with a rear frame,
In a seat cushion structure for a vehicle seat in which a cushion frame is formed and an upper surface side of the cushion frame is covered with a cushion material to form a seat cushion body, the side frame formed in a U-shaped cross section
Connect both ends of the rear frame with a U-shaped cross section between the rear ends.
A U-shaped cross-section formed along the upper surface of the connecting portion between the side frame and the rear frame disposed on the outside.
In the form of reinforcing members. Further, a front frame connects the front ends of the pair of side frames with each other and a rear frame connects the rear ends of the side frames with each other to form a cushion frame. In the seat cushion structure of the vehicle seat having the seat cushion body covered by the
The rear frame with a U-shaped cross section
At the corner between the rear end of the side frame and one end of the rear frame.
And a reinforcing member provided in the U-shaped section inside of the rear frame, the
The wall and bottom in the height direction of the reinforcement are inside the U-shaped section
Together disposed, and an upper surface of the side frame on the inside of the U-shaped section of the side frame which is located above the outside
That is, a reinforcing member joined between the lower surfaces is provided.

[0006]

The rigidity of the cushion frame can be improved by providing a reinforcing member between the side frame and the rear frame. In addition, by providing a side frame reinforcement on the inside of the side frame disposed on the outside, or by providing a reinforcement on the upper surface of the connection portion between the side frame and the rear frame disposed on the outside, the rigidity on the outer surface side of the cushion frame is provided. Can be improved. As described above, the rigidity of the cushion frame can be improved, so that the cross-sectional shape of the cushion frame can be reduced. Therefore, since the thickness of the cushion material can be sufficiently set, the riding comfort can be improved.

[0007]

An embodiment of the present invention will be described below in detail with reference to the drawings.

In FIG. 1 and FIG. 2, reference numeral 1 denotes a vehicle front seat including a seat cushion 2 and a seat back 3. The seat cushion 2 is configured by covering a periphery of a seat cushion body 6 formed of a quadrangular cushion frame 4 and a cushion material 5 with a skin material 7. As the cushion material 5, for example, a material such as urethane foam is used.

As shown in FIG. 3, the cushion frame 4 has a pair of side frames 8, each having a U-shaped cross section.
Both ends of the front frame 9 are joined between the front ends of the rear frames 8 and both ends of the rear frame 10 having a U-shaped cross section are joined between the rear ends of the side frames 8 and 8, thereby forming a square.
A metal frame 11 to which a metal wire is connected is supported between the side frames 8 and 8 via a plurality of springs 12 (see FIG. 2).

A reclining support reinforcement 14 is provided as a reinforcing material between the rear end of the outer side frame 8 to which the reclining device 13 is attached and one end of the rear frame 10. As shown in FIGS. 4 and 5, the reclining support reinforcement 14 is formed by bending a frame having a U-shaped cross section into an L-shape.
And is joined to the upper surface 15 of the connecting portion connecting the rear end of the rear frame 10 and one end of the rear frame 10.

On the other hand, as shown in FIG. 6, a connecting bracket 16 is provided as a reinforcing material between the rear end of the side frame 8 and one end of the rear frame 10 which are arranged on the indoor side. ing. The connection bracket 16 is disposed on the inner corners of the side frame 8 and the rear frame 10 so as to match the corners 16d formed by the wall surfaces 16a and 16b in the height direction of the connection bracket 16 and the bottom surface 16c.

As shown in FIGS. 7 and 8, a side frame reinforcing member 17 joined between the upper surface 8a and the lower surface 8b is provided inside the intermediate portion of the outer side frame 8. The side frame reinforcing member 17 is formed by bending both end portions 17a into an L-shape, and has an arcuate semicircular portion 1 in the middle.
7b are formed, and the rigidity is improved without changing the outer shape of the side frame 8.

According to the above configuration, the reclining device 1
A reclining support reinforcement 14 is provided as a reinforcement between the rear end of the outer side frame 8 to which the outer frame 3 is attached and one end of the rear frame 10, so that the outer side frame 8 and the rear frame The stiffness of the ten connecting portions can be improved. Then, the rigidity of the cushion frame 4 can be improved with respect to an impact applied from the outside. Next, the rear end of the side frame 8 and the rear
0, connecting brackets 1 as reinforcements
Since the bridge 6 is bridged, the rigidity of the connecting portion between the side frame 8 and the rear frame 10 arranged on the indoor side can be improved. Further, since the side frame reinforcing member 17 is provided between the upper surface 8a and the lower surface 8b inside the intermediate portion of the outer side frame 8, the rigidity of the side frame 8 can be improved without changing the outer shape of the side frame 8. it can.

The connecting bracket 16 is connected to the rear end of the side frame 8 and the rear frame 10 arranged on the indoor side.
Can be provided not only between the one end portions, but also between the rear end portion of the side frame 8 disposed outside and the rear frame 10. Thereby, the rigidity outside the cushion frame 4 can be further improved. In addition, the reclining support reinforcement 14, the connection bracket 16, and the side frame reinforcing member 17 can be used alone or in combination.

[0015]

As described above, according to the seat cushion structure for a vehicle seat according to the present invention, the following effects can be obtained. 2. The cushion frame according to claim 1, wherein the front ends of the pair of side frames are connected by a front frame, and the rear ends of the side frames are connected by a rear frame, thereby forming a cushion frame. In a seat cushion structure for a vehicle seat in which a seat cushion body is formed by covering with a cushion material, both ends of the rear frame having a U-shaped cross section are joined between rear ends of the side frames formed to have a U-shaped cross section. At the corner between the rear end of the frame and one end of the rear frame, a reinforcing material is provided on the inside of the U-shaped cross section of the side frame and the rear frame,
The height direction of the wall portion and the bottom surface of the stiffener than was arranged to fit inside the U-shaped section, it is possible to improve the rigidity of the click Tsu Deployment frame, it is possible to reduce the cross-sectional shape of the frame Therefore, it is possible to improve the ride comfort by increasing the thickness of the cushion material. Further, since the rear frame can be made thinner, the space for the legs of the occupant in the rear seat can be increased. It is economical because a small cushion frame can be used. 3. A cushion frame according to claim 2, wherein the front ends of the pair of side frames are connected by a front frame, and the rear ends of the side frames are connected by a rear frame to form a cushion frame. In a seat cushion structure for a vehicle seat in which a seat cushion body is formed by covering with a cushion material, both ends of the rear frame having a U-shaped cross section are joined between rear ends of the side frames formed to have a U-shaped cross section. The reinforcing material joined between the upper and lower sides of the side frame is provided inside the U-shaped cross section of the side frame, so rigidity is maintained without changing the outer shape of the side frame
Can be improved. In particular, the rigidity of the side surface of the seat can be improved. In claim 3, the front ends of the pair of side frames are connected by a front frame,
And a rear frame connecting the rear ends of the side frames with a rear frame to form a cushion frame, and covering an upper surface side of the cushion frame with a cushion material to form a seat cushion body. Both ends of the rear frame having a U-shaped cross-section are joined between the rear ends of the side frames formed into a U-shaped cross-section, and formed into an L-shape along the upper surface of a connection portion between the side frame and the rear frame disposed outside. It is provided with the reinforcement of the cross-section U-shaped, as possible out to improve the lateral stiffness of the connection portion of the side frame and the rear frame reclining device is provided. 5. The cushion frame according to claim 4, wherein the front ends of the pair of side frames are connected by a front frame, and the rear ends of the side frames are connected by a rear frame, thereby forming a cushion frame. In a seat cushion structure for a vehicle seat in which a seat cushion body is formed by covering with a cushion material, both ends of the rear frame having a U-shaped cross section are joined between rear ends of the side frames formed to have a U-shaped cross section. At the corner between the rear end of the frame and one end of the rear frame, a reinforcing material is provided inside the U-shaped cross section of the side frame and the rear frame. The side frame is disposed in accordance with the inside of the U-shape, and the side frame It is provided with the reinforcement which is bonded therebetween upper and lower surfaces, the stiffness without changing the outer shape of the side frame toward
Can be up. As described above, since the rigidity of the cushion frame can be improved, by reducing the cross-sectional shape of the frame, the cushion material can be made thicker and the riding comfort can be improved. Since the rear frame can be made thinner, the space for the legs of the occupant in the rear seat can be increased.

[Brief description of the drawings]

FIG. 1 is a partial sectional view showing one embodiment of a seat cushion structure in a vehicle seat according to the present invention.

FIG. 2 is a plan view showing the seat cushion of FIG. 1;

FIG. 3 is a perspective view showing a cushion frame of the seat cushion of FIG. 1;

FIG. 4 is a perspective view showing a reclining support reinforcement portion of the seat cushion frame of FIG. 3;

FIG. 5 is a sectional view taken along line AA of FIG. 3;

FIG. 6 is a perspective view showing a connection bracket portion of the seat cushion frame of FIG. 3;

FIG. 7 is a perspective view showing a side frame reinforcing member of the seat cushion frame of FIG. 3;

FIG. 8 is a sectional view taken along the line BB of FIG. 3;

FIG. 9 is a perspective view showing a seat cushion structure in a vehicle seat.

FIG. 10 is a perspective view showing a cushion frame of a conventional seat cushion.

FIG. 11 is a sectional view showing a cushion frame and a cushion material of a conventional seat cushion.

FIG. 12 is a sectional view showing a large cushion frame and a cushion material.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Front seat for vehicles 2 Seat cushion 3 Seat back 4 Cushion frame 5 Cushion material 6 Seat cushion body 7 Skin material 8 Side frame 9 Front frame 10 Rear frame 11 Metal frame 12 Spring 13 Reclining device 14 Reclining support reinforcement 15 Upper surface 16 Connection bracket 17 Side frame reinforcement

Claims (4)

(57) [Claims] 1. A cushion frame is formed by connecting the front ends of a pair of side frames with a front frame, and connecting the rear ends of the side frames with a rear frame. in the seat cushion structure of the vehicle seat forming a seat cushion body covered with a cushion material, cross-sectional U
Cross section between the rear ends of the side frames formed in the shape of a letter
The two ends of the U-shaped rear frame are joined, and a corner between the rear end of the side frame and one end of the rear frame is formed.
Within the U-shaped cross section of the side frame and rear frame
A reinforcing material is provided on the side, and the wall portion and the bottom surface in the height direction of the reinforcing material are
A seat cushion structure for a vehicle seat, wherein the seat cushion structure is arranged so as to match the inside of the U-shaped cross section . 2. A cushion frame is formed by connecting the front ends of a pair of side frames with a front frame, and connecting the rear ends of the side frames with a rear frame. in the seat cushion structure of the vehicle seat forming a seat cushion body covered with a cushion material, cross-sectional U
Cross section between the rear ends of the side frames formed in the shape of a letter
Both ends of the U-shaped rear frame are joined, and a reinforcing member joined between the upper surface and the lower surface of the side frame is provided inside the U-shaped cross section of the side frame disposed outside. Seat cushion structure for vehicle seats. 3. A cushion frame is formed by connecting the front ends of a pair of side frames with a front frame, and connecting the rear ends of the side frames with a rear frame. in the seat cushion structure of the vehicle seat forming a seat cushion body covered with a cushion material, cross-sectional U
Cross section between the rear ends of the side frames formed in the shape of a letter
Both ends of the U-shaped rear frame are joined, and a reinforcement member having a U-shaped cross section formed in an L-shape along the upper surface of a connection portion between the side frame and the rear frame disposed on the outside is provided. Seat cushion structure for vehicle seats. 4. A cushion frame is formed by connecting the front ends of a pair of side frames with a front frame, and connecting the rear ends of the side frames with a rear frame. in the seat cushion structure of the vehicle seat forming a seat cushion body covered with a cushion material, cross-sectional U
Cross section between the rear ends of the side frames formed in the shape of a letter
The two ends of the U-shaped rear frame are joined, and a corner between the rear end of the side frame and one end of the rear frame is formed.
Within the U-shaped cross section of the side frame and rear frame
A reinforcing material is provided on the side, and the wall portion and the bottom surface in the height direction of the reinforcing material are
Arranged to fit the U-shaped section interior, and a reinforcing member that is joined between each other the upper and lower surfaces of the sub <br/> Id frame inside the U-shaped section of the side frame which is located above the outside A seat cushion structure for a vehicle seat, comprising: