JPH0334124Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a sheet cushion body with good cushioning performance.

Generally, in order to improve the cushioning performance of a seat, an air cushion bag is assembled and arranged on the lower side of the cushion form. Although this air cushion bag can provide better cushioning performance by flexing and deforming due to the load of the occupant compared to a seat with only cushion foam, there is a limit to this deformation, and if a load exceeding the permissible limit is applied. As it becomes rigid, it exhibits a kind of bottoming phenomenon, and as the part on which the load is applied dents, the air cushion bag locally flexes and deforms as if the other part bulges out. It also has the disadvantage that it cannot be supported with uniform pressure.

In addition, a three-layer cushion body is known in which a bloomer spring is stretched over a seat frame, and the cushion form is supported by an air cushion bag placed on the upper side of the spring. −57903). However, since the air cushion bag is placed in direct contact with the cushion form, if an uneven load is applied to the air cushion bag, it will deform into an irregular shape. It cannot be supported by pressure. Also known is a sheet cushion body in which an air chamber is formed inside the cushion foam, and a plurality of wire springs are stretched along the inner surface as the frame of the air chamber (Utility Model Publication No. 40-3690). . However, in this cushion body, the wire spring is assembled as a frame that maintains the shape of the air chamber, so it does not exhibit individual cushioning properties separately from the air chamber, and furthermore, the spring is made of wire. As mentioned above, it is not possible to disperse the unbalanced load of the occupant over a wide range of the cushion form.

The object of the present invention is to provide an improved sheet cushion body in order to eliminate such drawbacks.

That is, in the seat cushion body according to the present invention, the cushion form placed on the cushion frame is received and supported by the rubber elastic plate stretched approximately horizontally on the cushion frame, and the cushion form is received and supported through the rubber elastic plate. An air cushion bag that supports the cushion form is assembled and arranged in a recess of the cushion frame on the lower side of the rubber elastic plate.

In the cushion body of this seat, the cushion foam, the rubber elastic plate, and the air cushion bag are assembled so that they can each exhibit their own cushioning properties. The cushioning foam is dispersed over a wide area and the air cushion bag is deflected and deformed accordingly, so that the cushion form can be supported with substantially uniform pressure.

This will be explained below based on the illustrated embodiments.

The illustrated embodiment constitutes a cushion body for a two-wheeled vehicle seat, and this cushion body A is constructed to have a three-layer structure and is housed between a cushion frame F and a seat skin C. As shown in FIG. 1, the cushion body A has a rubber elastic plate 3 interposed between a cushion form 1 and an air cushion bag 2, and each cushion layer 1, 2,
Each of the cushion layers 3 has its own cushion function, and when each cushion function exceeds a permissible range, the load is transferred to another cushion layer to exert a good cushion function.

As shown in FIG. 2, the rubber elastic plate 3 is formed by shaping a rubber plate 3a into a desired shape and fixing it to the cushion frame F with wire clips 3b to receive and support the cushion form 1. It can be installed almost horizontally. Also,
Air cushion bag 2 is cushion foam F
The rubber elastic plate 3 is housed in a concave portion of the cushion frame F which is recessed below the attachment position of the rubber elastic plate 3 stretched over the cushion frame F, and the rubber elastic plate 3 is stretched so as to face the upper surface side of the cushion frame F. The air cushion bag 2 can be assembled so that the amount of air can be adjusted by attaching a valve 2b to the air pipe 2a.

The cushion body A constructed in this manner has a three-layer structure in which the cushion foam 1, the air cushion bag 2, and the rubber elastic plate 3 each exhibit cushioning properties individually. Even if the large load of the occupant exceeds each allowable range, the air cushion bag 2 will be further flexed and deformed within the space of the cushion frame F, so it will not only be able to exhibit good cushioning properties, but also Since the air cushion bag 2 does not bend excessively and exhibit rigidity, the seater does not feel the feeling of bottoming out. In addition, since the surface of the rubber elastic plate 3 of the air cushion bag 2 deforms in a wide range in a gentle arc shape according to the load of the sitting person, by following this, it does not locally dent or bulge. The cushion form 1 can now be supported with substantially uniform pressure.

As described above, according to the seat cushion body according to the present invention, it is possible to stably support the seated person, and each of the three cushion layers exhibits extremely good cushion performance.

[Brief explanation of the drawing]

FIG. 1 is a sectional side view of a seat incorporating a cushion body according to the present invention, and FIG. 2 is a perspective view showing an example of a rubber elastic plate used in the cushion body. 1...Cushion foam, 2...Air cushion bag, 3...Rubber elastic plate.

Claims (1)

[Scope of utility model registration request] The cushion foam placed on the cushion frame is received and supported by a rubber elastic plate stretched almost horizontally on the cushion frame, and the air cushion bag that supports the cushion form is attached to the rubber elastic plate via the rubber elastic plate. A cushion body for a seat, characterized in that the lower side of an elastic plate is assembled into a recess in a cushion frame.