JPH0595345U - Vehicle seat cushion structure - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the seat cushion from losing its elasticity due to the shape of the peripheral portion of the seat cushion being collapsed by the load of the seated person without providing a groove or a skin suture on the seat seating surface. [Structure] The seat frame 2 is provided with a frame 3 projecting so as to have a size capable of supporting the outer peripheral portion of the hip of the seated person. A rectangular annular groove 11 into which the frame body 3 is fitted on the lower surface of the urethane pad 4 which is covered with the outer skin 5 and is placed on the seat frame 2.
To provide.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure of a vehicle seat cushion.

[0002]

[Prior Art]

 In the vehicle seat cushion 30 as shown in FIGS. 9 and 10, the urethane pad 31 forming the seat seat surface is placed on the seat frame 32, and the top plate portion of the outer skin 33 is entirely covered with the urethane pad 31. The end portion 34 of the outer skin 33 is fixed to the lower portion of the outer periphery of the seat frame 32 while being adhered. Further, in the seat cushion 36 shown in FIG. 11, a design groove 38 having a rectangular cross section is arranged on the upper surface of the urethane pad 37 in a square annular shape having a size capable of enclosing the hip of the seated person 35, and the top plate 39. The sewn portion 41 of the outer skin 40, which is formed by split sewing, is drawn into the design groove 38 and then adhered to the inner wall thereof. The top plate 39 of the skin 40 is entirely adhered to the urethane pad 37, and the end portion 42 is fixed to the lower outer peripheral portion of the seat frame 32.

[0003]

[Problems to be solved by the device]

 When the seated person 35 sits on the seat cushion 30 of the former, the urethane pad 31 and the skin 33 are partially sunk below the buttocks, and the skin 33 and the surface of the urethane pad 31 are sunk around the buttocks. Is pulled in the direction of. As a result, lateral pressure is applied to the outer skin 33 and the urethane pad 31 on the side portion of the seat cushion 30, so that the shape of the peripheral portion of the seat cushion 30 is lost and the elasticity is also reduced. On the other hand, in the latter seat cushion 36, even if the urethane pad 37 is compressed below the hips of the seated person 35, the sewn portion 41 is adhered to the inner wall of the design groove 38, so that the bending of the seat seat surface center portion Although the influence of the effect on the peripheral portion is alleviated, and the inconvenience that occurs in the seat cushion 30 described above is almost avoided, it is necessary to provide the design groove 38 and the sewn portion 41 on the seat seat surface and bond them. There is a problem in that manufacturing costs are high and design restrictions are imposed.

Therefore, the present invention is a technical solution to prevent the lateral pressure from being applied to the skin and the urethane pad due to the load of the seated person, without providing the groove of the seat pad or the seam stitching part on the seat seat surface. It is an issue.

[0005]

[Means for Solving the Problems]

 As a means to solve the above problems, we have created the following vehicle seat cushion structure. That is, in a seat cushion structure for a vehicle in which a seat pad forming a seat seating surface is placed on a seat frame, and the seat pad is closely covered with an outer skin, the seat frame has a buttock of a seated person. A supporting member capable of supporting the outer peripheral portion of the seat pad is provided in a protruding manner, and an annular groove into which the supporting member is fitted is provided on the lower surface of the seat pad.

[0006]

[Action]

 With the vehicle seat cushion having the above structure, the seat cushion center portion of the seat pad is compressed and bends downward due to the load of the occupant, but since the outer peripheral portion of the occupant's hips is supported by the support member, the deflection The effect of the above is blocked from being transmitted to the outer peripheral portion of the seat pad. Moreover, since the central portion and the outer peripheral portion of the seat pad, which are partitioned by the annular groove, can be deformed independently of each other, the tension applied to the skin is relieved, and excessive lateral pressure is not generated on the side portion of the seat cushion.

[0007]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, a vehicle seat cushion 1 has a frame 3 (also referred to as a supporting member) attached to a seat frame 2 for fixing to a vehicle body, and a seat seat surface is formed thereon. A urethane pad 4 (also referred to as a seat pad) for doing so is placed, and the urethane pad 4 is formed by closely covering the skin 5. As shown in FIG. 4, the frame 3 is a resin frame formed in a substantially rectangular shape having a size corresponding to the hips of a seated person, and is open in both upper and lower directions. A plurality of mounting holes 7 are formed in the bottom portion 6 of the frame body 3, and a receiving portion 9 having a circular cross section is formed at the upper end portion of a flat plate-shaped peripheral wall 8 rising from the outer peripheral end portion of the bottom portion 6. There is. Then, as shown in FIG. 5, the frame body 3 placed on the seat frame 2 with the receiving portion 9 facing the seat occupant's hip is fixed to the seat frame 2 with the screw 10 inserted into the hole 7, as shown in FIG. Be fastened.

On the other hand, a rectangular annular groove 11 into which the frame 3 is fitted is provided on the lower surface of the urethane pad 4 formed into a predetermined shape. As shown in FIG. 5, the groove 11 has a flat groove 12 into which the bottom 6 of the frame 3 fits, and a narrow taper into which the peripheral wall 8 fits with a certain space left. The vertical groove portion 13 and the round groove portion 14 into which the receiving portion 9 is fitted are formed, and the groove bottom reaches near the upper surface of the urethane pad 4.

Further, the outer skin 5 is one in which side plates 5b are sewn on both left and right sides of a top plate 5a of one piece which is covered on the upper surface of the urethane pad 4 (also referred to as seat seat surface). The plate portion 5a is entirely bonded to the urethane pad 4, and the end portion 15 of the side plate portion 5b is fixed to the lower outer periphery of the seat frame 2 by the clip 16.

Next, the function and effect of the seat cushion 1 configured as described above will be described. When the seated person 17 sits on the seat cushion 1, the urethane pad 4 is deformed as shown in FIG. 6, and the central portion of the seat pad surface of the urethane pad 4 surrounded by the frame 3 is compressed most. Bends in the direction and swells slightly in the lateral direction. However, since the outer peripheral portion of the hip of the seated person 17 is supported by the receiving portion 9 of the frame body 3, a large load is not applied to the urethane pad 4 on the outer side of the frame body 3. Then, the inner expanded portion deforms the groove 11 and comes into contact with the peripheral wall 8 of the frame body 3 to stop, so that the deformation does not spread beyond the frame body 3 to the outer peripheral portion 18 of the urethane pad 4. Further, the side plate portion 5b of the outer skin 5 is slightly retracted toward the seat bearing surface central portion along with the top plate portion 5a, but the outer peripheral portion 18 of the urethane pad 4 is centered around the upper end portion of the round groove portion 14 of the groove 11. As a result, the tension can be relaxed because it can be rotationally displaced. Since both the receiving portion 9 and the round groove portion 14 are formed to have a circular cross section, the urethane pad 4 does not easily break even when the groove shape is deformed.

As described above, in the seat cushion 1, an excessive lateral pressure is not applied to the outer peripheral portion 18 of the urethane pad 4 and the side plate portion 5b of the outer skin 5 due to the influence of the load of the seated person 17. It is prevented that the shape of the peripheral part collapses and the elasticity of that part deteriorates. Further, since it is not necessary to provide a groove or a stitching portion of the skin on the seat seat surface, it is possible to form the top plate portion 5a of the skin 5 with a single piece.

Next, another embodiment of the present invention will be described with reference to the drawings. FIG. 7 shows a frame body 20 (also referred to as a supporting member), and FIG. 8 shows a main part of the seat cushion 19 in a state where the frame body 20 is fitted in the urethane pad 21. The outer shape of the urethane pad 21 is substantially the same as the outer shape of the urethane pad 3 in the above-described embodiment, and the seat frame 2 and the outer skin 5 are the same as those in the above-described embodiment, and therefore, the same reference numerals are used. And the description is omitted. As shown in FIG. 7, the frame body 20 is a resin frame formed into a substantially rectangular shape. A plurality of mounting holes 24 are formed in the bottom portion 23, and the peripheral wall stands up from the outer peripheral end of the bottom portion 23. 25 is curved outward from the base end toward the tip. A receiving portion 26 having a circular cross section is formed at the tip of the peripheral wall 25 arranged so as to support the outer peripheral portion of the seated person's hips. Further, a triangular rib 27 for increasing rigidity is provided between the bottom portion 23 and the peripheral wall 25, and the peripheral wall 25 is formed with a plurality of elongated holes 28. Furthermore, since the slits 29 are formed at the four corners of the frame body 20, the peripheral wall 25 is easily bent in all directions. On the other hand, as shown in FIG. 8, a wide groove 22 is provided on the lower surface of the urethane pad 21 so that the receiving portion 26 of the frame body 20 can flex freely.

Since the frame body 20 and the urethane pad 21 are formed as described above in the seat cushion 19 according to the present embodiment, when the seated person 17 sits, the peripheral wall 25 bends in the seat outer peripheral direction, The outer peripheral portion of the hip of the seated person 17 can be elastically supported. Further, although the tip portion of the peripheral wall 25 is easily bent, lateral expansion due to the compressive deformation of the urethane pad 21 inside the frame body 20 is blocked by the base end portion of the peripheral wall 25 having high rigidity, and the urethane pad The deformation does not spread to the outer peripheral portion of 21. Therefore, the seat cushion 19 according to the present embodiment can achieve the same effect as that of the above-described embodiment, and can softly support the outer peripheral portion of the hip of the seated person 17, so that the seating feeling can be improved. There is a feature that

In each of the above-described two embodiments, the supporting member is configured as a rectangular frame body, but the supporting member may have a planar shape other than a rectangular shape, for example, a circular shape, and may be further divided into a plurality of parts. it can.

[0015]

[Effect of the device]

 According to the present invention, it is possible to prevent the seat cushion from losing its elasticity due to the shape of the peripheral edge portion of the seat cushion being lost, so that the sitting comfort can be improved. In addition, since the top plate portion of the outer skin can be formed by one piece, the manufacturing cost of the seat cushion is reduced, and further, there is an effect that there is no restriction on the design.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a seat cushion according to an embodiment of the present invention.

FIG. 2 is a perspective view of a seat cushion according to an embodiment of the present invention.

FIG. 3 is a half cross-sectional view taken along the line AA of FIG.

FIG. 4 is a perspective view showing a frame body according to an embodiment of the present invention in a cutaway manner.

FIG. 5 is an enlarged sectional view of a main part of a seat cushion according to an embodiment of the present invention.

FIG. 6 is a diagram illustrating a flexure state of the seat cushion according to the embodiment of the present invention.

FIG. 7 is a perspective view showing a frame body according to another embodiment of the present invention in a cutaway manner.

FIG. 8 is a sectional view showing an essential part of a seat cushion according to another embodiment of the present invention.

FIG. 9 is a perspective view of a seat cushion according to a conventional example.

10 is a half cross-sectional view taken along the line BB of FIG.

FIG. 11 is a half sectional view of a seat cushion according to a conventional example.

[Explanation of symbols]

 1 Seat Cushion 2 Seat Frame 3 Frame (Supporting Member) 4 Urethane Pad (Seat Pad) 5 Skin 5a Top Plate 5b Side Plate 11 Groove 18 Perimeter

Claims (1)

[Scope of utility model registration request] 1. A structure of a vehicle seat cushion in which a seat pad forming a seat seating surface is placed on a seat frame, and the seat pad is covered with a skin in a close contact manner. A structure of a vehicle seat cushion, wherein a supporting member capable of supporting an outer peripheral portion of the hip is provided in a protruding manner, and an annular groove into which the supporting member is fitted is provided on a lower surface of the seat pad.