JPH08196381A - Seat cushion - Google Patents

Abstract

PURPOSE: To add the feeling of a spring to the seat cushion of a seat without displacing down an ischial support plate for the seat cushion. CONSTITUTION: Regarding the seat cushion 1 of a vehicular seat, both ends of an ischial support plate 4 curved down are jointed to a cushion frame 2 to support a main pad 3. Also, the upper and lower sections of a spring S are held between an auxiliary pad 5 pasted to the upper surface of the plate 4 and the thick section 9 of the main pad 3 as well pasted, and hooked to the cushion frame 2 along a breadthwise direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat cushion in a seat, and more particularly to a structure of a seat cushion in a vehicle seat.

[0002]

2. Description of the Related Art In a conventional seat cushion for a seat, as illustrated in Japanese Utility Model Laid-Open No. 64-14054, an isquial support plate extending laterally below a cushion portion where the body pressure reaches a peak. By arranging and connecting both ends of the ischial support plate to the cushion main frame, the seated person on the seat cushion is supported according to the body pressure distribution. Since only the urethane cushion is placed between them, if the seating comfort is determined by the urethane material of the cushion, the spring feeling will be insufficient, and therefore both ends of the isqueal support plate will be cushioned through the springs. When connected to the frame, the seat cushion may be In response to a large load applied to the seat, the ischial support plate may be displaced downward, and therefore, there is a risk of hitting other equipment or members arranged below the seat, or by predicting the downward displacement of the seat cushion bottom, It is necessary to set the position relatively high, and it is necessary to change the structure of the cushion main frame depending on the presence or absence of the spring, which causes a problem of hindering sharing of parts.

[0003]

SUMMARY OF THE INVENTION The present invention is intended to impart a spring feeling to the seat cushion without displacing the isial support plate of the seat cushion in the seat downward.

[0004]

For this reason, the seat cushion according to the present invention is provided with an isqueal support plate which extends in the lateral width direction and whose both ends are connected to the cushion frame. 1
The pad, the second pad disposed above the first pad, and the S spring disposed above the second support pad and below the second pad and extending in the lateral width direction are provided.

[0005]

In this case, since the seat pad is supported by the first pad and the second pad arranged above and below and the S spring, a sufficient spring feeling can be imparted to the seat cushion. Since both ends of the ischial support plate are connected to the cushion frame, a partial downward displacement of the seat cushion bottom portion by the seated person can be reliably suppressed by the ischial support plate.

[0006]

Embodiments of the present invention shown in the drawings will be described below.
The same parts will be described with the same reference numerals. 1 and 2
In a seat cushion 1 of a vehicle seat, a substantially rectangular cushion frame 2 and a main pad 3 made of a urethane material whose lower surface periphery is attached to the cushion frame 2.
Both ends of the sheet metal ischial support plate 4 which has a horizontal width direction and which is curved slightly downward in accordance with the shape of the lower surface of the seated person are connected to the side portions of the cushion frame 2 and has a flat upper surface. An auxiliary pad 5 made of a urethane material, the lower surface of which is substantially in conformity with the curve of the ischial support plate 4, is glued onto the upper surface of the isqueal support plate 4, and a plurality of recesses 6 extending in the front-rear direction are formed on the lower surface of the auxiliary pad 5. Are formed.

Further, on the upper surface of the auxiliary pad 5, S springs 7 which are continuously bent in a wavy shape are arranged, and as shown in FIG. 3, spot welded to the side portions of the cushion frame 2, respectively. Both ends of the S spring 7 are crimped to the sheet metal clip 8 and the S spring 7 is mounted in the lateral width direction with respect to the cushion frame 2. As a result, the S spring 7 and the thick portion 9 of the main pad 3 are It is in a state of being sandwiched vertically with the auxiliary pad 5.

In the seat cushion 1, since both ends of the isial support plate 4 are connected to the cushion frame 2, the load of the seated person can be easily and surely supported by the isial support plate 4. The seated person is elastically supported in the vertical direction by the main pad 3, the S spring 7, and the auxiliary pad 5, and at this time, since the S spring 7 is mounted below the main pad thick portion 9, the seat cushion is seated. 1 can give a sufficient spring feeling to the seat 1, and since the ischial support plate 4 is connected to the cushion frame 2 and is not displaced downward, the floor space below the seat cushion 1 can be secured. It can always be secured and can safely store other equipment or parts here, therefore There is no need to pre-set a high position of over cushions 1.

The materials of the main pad 3 and the auxiliary pad 5 may have the same elasticity, but the elasticity of the main pad 3 is made relatively soft to make the elasticity of the auxiliary pad 5 material. Relatively hard or auxiliary pad 5
If the elasticity of the auxiliary pad 5 is made relatively hard by compressing between the S spring 7 and the ischial support plate 4, the comfort of sitting on the seat cushion 1 can be easily improved, or If the elasticity of the auxiliary pad 5 is made relatively soft and the elasticity of the main pad 3 is made relatively hard as a material, it is possible to easily improve the riding comfort when driving the vehicle. Various adjustments can be made so that each cushion 1 has the most suitable sitting comfort.

Further, the vertical resilience of the auxiliary pad 5 can be appropriately adjusted by the plurality of recesses 6 formed on the lower surface of the auxiliary pad 5, so that the main pad 3 and / or the auxiliary pad 5 can be adjusted as described above. The height of the hip point of the seated person with respect to the seat cushion 1 can be easily finely adjusted in spite of the fact that the S spring 7 is mounted together with changing the elasticity of the lower surface. Auxiliary pad 5 in which the shape and / or number of recesses 6 are different
If the appropriate selection is made according to the vehicle type, it is possible to easily perform the fine adjustment without changing other members, which is very convenient and contributes to cost reduction. it can.

That is, as described above, by appropriately selecting the material and shape of the main pad 3 and / or the auxiliary pad 5, it is possible to realize the seat cushion 1 having the optimum elasticity characteristic according to the vehicle type. It is possible to easily perform fine adjustment of the seated person's hip point, and since it is possible to commonly use each member other than the auxiliary pad 5 as the seat cushion 1, it is possible to easily reduce the overall cost. There are advantages that can be reduced.

Since the auxiliary pad 5 is interposed between the S spring 7 and the ischial support plate 4, S
The metal contact between the spring 7 and the ischial support plate 4 is surely prevented, and the generation of abnormal noise can be suppressed. On the other hand, even if the elasticity of the auxiliary pad 5 is deteriorated due to secular change, the presence of the S spring 7 prevents the seat cushion. 1 can also prevent the bottoming phenomenon, and in the above embodiment,
Both ends of the S spring 7 are directly connected to the cushion frame 2, but they may be connected to both ends of the isqueal support plate 4, respectively. Even if the appropriate number is formed in the middle portion so as to extend in the front-rear direction, or the appropriate number of the recesses are formed so as to extend in the lateral width direction in the lower surface of the auxiliary pad 5 or in the upper and lower intermediate portions, the same effect as that of the above-described embodiment, It goes without saying that the effect can be achieved.

Next, the seat cushion 10 of the vehicle seat shown in FIG. 4 has a substantially rectangular cushion frame 2.
And a main pad 3 made of urethane material having a lower surface periphery attached to the cushion frame 2, and both ends of a sheet metal ischial support plate 4 extending in the lateral width direction and slightly curved downward are located on the cushion frame 2 side. On the other hand, the S spring 7 is embedded in the urethane material auxiliary pad 11 having a flat upper surface and a lower surface substantially conforming to the curvature of the ischial support plate 4, and both ends of the exposed S spring 7 are The auxiliary pad 11 is vertically sandwiched between the thick portion 9 of the main pad 3 and the ischial support plate 4 by being attached to the side portion of the cushion frame 2 as in the case of the above embodiment. There is.

Therefore, also in this case, the seated person is elastically supported in the vertical direction by the main pad 3, the S spring 7 and the auxiliary pad 11, and the S cushion 7 is mounted so that the seat cushion 10 can be comfortably seated. The spring support can be added and the isquial support plate 4
It is possible to eliminate the downward displacement of the seat cushion, and at the same time, the elasticity of the main pad 3 and / or the auxiliary pad 11 is controlled to be soft and soft as in the case of the above-described embodiment, so that the seat cushion 10 can be comfortably seated when seated, or It is possible to easily improve the riding comfort and the like when the vehicle is operating. Furthermore, since the S spring 7 and the auxiliary pad 11 are integrated, it is possible to simplify the work of attaching them and reduce the number of assembly steps. it can.

[0015]

In the seat cushion according to the present invention, the first pad and the second pad arranged above and below and the S
By combining with a spring, it is possible to give a sufficient spring feeling to the sitting comfort and easily improve the sitting comfort, and at the same time, the partial downward displacement of the seat cushion bottom by the occupant is ensured by the isquial support plate. There is a great practical effect that the space can be suppressed and the space below the seat cushion can be effectively used.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of an embodiment of the present invention.

FIG. 2 is a partially cutaway exploded perspective view of the above embodiment.

FIG. 3 is an enlarged perspective view of a main part of the above embodiment.

FIG. 4 is a partially cutaway perspective view of another embodiment of the present invention.

[Explanation of symbols]

 1 Seat Cushion 2 Cushion Frame 3 Main Pad 4 Isquial Support Plate 5 Auxiliary Pad 7 S Spring 10 Seat Cushion 11 Auxiliary Pad

Claims (10)

[Claims] 1. An isquial support plate extending in the lateral width direction and having both ends connected to a cushion frame, a first pad mounted on the isquial support plate, and a second pad disposed above the first pad. A seat cushion having an S spring which is disposed above the pad and the ischial support plate and below the second pad and extends in the lateral width direction. 2. The seat cushion according to claim 1, wherein both ends of the S spring are connected to the cushion frame. 3. The seat cushion according to claim 1, wherein the first pad and the second pad have different elasticity. 4. The seat cushion according to claim 1, wherein the elasticity of the first pad is greater than the elasticity of the second pad. 5. The seat cushion according to claim 1, wherein the elasticity of the second pad is greater than the elasticity of the first pad. 6. The seat cushion according to claim 1, wherein a recess is formed in the lower surface or the upper and lower intermediate portions of the first pad. 7. The seat cushion according to claim 6, wherein the recess is formed so as to extend in the front-rear direction or the lateral width direction. 8. The seat cushion according to claim 1, wherein the S spring is arranged in the first pad. 9. The seat cushion according to claim 1, wherein the S spring is sandwiched between the first pad and the second pad. 10. The seat cushion according to claim 1, wherein an upper surface of the second pad forms a seating surface.