JPS6341962Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of an automobile seat made of a cushion member formed by molding polyurethane foam.

Cushion members in conventional seats of this type
A frame-shaped wire rod B' shaped as shown in Fig. 1a is integrally buried inside A' (Fig. 1b) to make the periphery of the cushion member A' a little hard and improve sitting comfort. The aim is to improve cushion performance, prevent deformation, and change cushion performance in response to load distribution. Therefore, a seat using this cushion member A' disperses the locally concentrated load and provides good sitting comfort, but if a thigh support device is installed, the entire body will float, making it difficult to utilize the effect of the thigh support. There was a problem that prevented it from being able to perform properly.

Therefore, the present invention aims to improve the comfort of sitting by allowing the thigh support device to be raised and lowered without compromising the advantages of conventional urethane foam seats.

In order to achieve the above object, the present invention is based on a urethane resin which integrally forms a buttock support part and an edge support part, and has an elevating means for raising and lowering the edge support part below the edge support part. Consists of a foam cushion member and a shape-retaining member embedded in the cushion member, and the shape-retaining member includes a fixing member disposed within the butt support portion of the cushion member and a fixing member that is rotatable in the vertical direction. a movable member connected to the cushion member and disposed within the edge support portion, the fixed member and the movable member comprising a wire rod bent into a frame shape embedded in the cushion member along the outer peripheral surface of the cushion member, The frame-shaped wire material is characterized in that a portion in the width direction of the sheet is formed low and a portion in the vertical width direction is formed high to prevent the cushion member from losing its shape.

Hereinafter, one embodiment of the present invention will be described based on the drawings. Figures 2 and 3 show the seat of the present invention equipped with a thigh support device, in which A is a cushion member made of polyurethane foam, and B is a cushion member. Shape retaining material integrally molded within the cushion member when forming member A, C is lifting means, D is cushion member A
E indicates a frame on which the cushion member B is placed, and a skin member that encloses the cushion member B, respectively.

The cushion member A has a buttock support part _a1 and a thigh support part.
a ₂ are integrally molded, the butt support part a ₁ is fixed to the frame D by the skin member E, and the thigh support part a ₂ is not fixed from the frame D,
It is provided so that it can be raised and lowered by means of raising and lowering means C provided on its bottom surface. The illustrated elevating means C has a rotating plate c ₁ disposed on the bottom surface of a rhinoceros support part a ₂ and a rotating shaft c ₂ fixed to one end _of the rotating plate c ₁ .
By rotating a lever _c3 fixed to the shaft around the rotation axis _c2 , the thigh support part _a2 is raised and lowered via the rotary plate _c1 .

The shape-retaining member B consists of a fixed member b ₁ provided within the butt support portion a ₁ of the cushion member A, and a movable member b ₂ provided within the thigh support portion a ₂ , and both members b ₁ and b ₂ are Each support part a ₁ ,
It is placed around the periphery of A ₂ and is made of wire bent into a frame shape. And the movable member b ₂ is clipped b ₄ , b ₄
etc., so that it can rotate freely in the vertical direction with respect to the fixing member _b1 (Figures 4 and 5). Moreover, the movable member b ₂ and the fixed member b ₁ are each placed inside the cushion member A.
The cushion member A is buried along the outer circumferential surface of the cushion member A, and the widthwise (horizontal direction) portion of each sheet is formed low, and the lengthwise widthwise direction (front and back direction) portion is formed high, so that each support portion a ₁ , a Prevents ₂ from losing its shape.

The skin member E is a laminate of the skin, wadding, and wading cover, and its upper surface is suspended from a spring member _d1 adjusted to the frame D by a hanging member e.

Thus, when the lever _c3 is operated to rotate the rotating shaft _c2 , the front part of the seat rises as shown by the two-dot chain line in FIG. Then, when the lever _c3 is operated in the opposite direction again, the front part of the seat returns to the position shown by the solid line in FIG. In other words, the seat is equipped with a thigh support device.

As described above, the present invention embeds a shape-retaining material consisting of a fixed material and a movable member rotatably connected to the fixed material in a cushion member made of urethane foam, so that the cushion member in which the movable member is embedded has a size. An edge support part such as a support part or a side support part is raised and lowered by a lifting means. Therefore, since the edge support part integrally formed with the buttocks support part moves up and down, the surface shape of the seat can be changed to suit the needs of the seated person, and the seat can be used more comfortably than conventional products. There is a conventional product in which only the thigh support part moves up and down, but this is because the thigh support part of the cushion member is not foamed integrally with the butt support part, so there is a step between the butt support part and the thigh support part. However, the proposed product does not have such problems. In addition, the fixed material and the movable material consist of a wire rod bent into a frame shape embedded in the cushion member along the outer peripheral surface of the cushion member, and the width direction (horizontal direction) of the sheet in the frame wire rod is The part is low, and the part in the vertical and width direction (front and back direction) is high. Therefore, it is possible to reinforce the right and left sides of the cushion member, which tends to deform due to long-term use of the seat cushion, and prevent it from losing its shape. The wires are buried in a low position, so when you sit down, the wires will not feel like a foreign body and will not impair your sitting comfort.

[Brief explanation of the drawing]

Figures 1a and b show conventional products, Figure 1a is a perspective view of a conventional shape retainer, Figure 1b is a perspective view of the shape retainer embedded in a cushion member, and Figure 2 Figures 5 to 5 show the proposed product, Figure 2 is a perspective view, and Figure 3 is a perspective view.
The figure is a longitudinal sectional view, FIG. 4 is a perspective view showing the shape retaining material, and FIG. 5 is a perspective view of the shape retaining material embedded in the cushion member. In the diagram, A is a cushion member, B, B ₁
is shape-retaining material, a ₁ is butt support, a ₂ , a ₃ , a ₃ ′ is edge support, b ₁ , b ₁ ′ is fixed material, b ₂ , b ₃ , b ₃ ′ is movable material shows.

Claims (1)

[Scope of utility model registration request] A cushion member made of a urethane foam material, in which a buttock support part and an edge support part are integrally formed, and a lifting means for raising and lowering the edge support part is disposed below the edge support part, and the cushion member is embedded in the cushion member. The shape-retaining material is composed of a fixing member disposed within the butt support portion of the cushion member, and a fixing member rotatably connected to the fixing member in the vertical direction and disposed within the edge support portion. The fixed material and the movable material consist of a wire rod bent into a frame shape embedded in the cushion member along the outer peripheral surface of the cushion member, and the width direction of the sheet in the frame wire rod is A urethane foam sheet, characterized in that the cushion member is formed to be low in portions and high in the vertical and width directions to prevent the cushion member from losing its shape.