JPH0686697U - Seat cushion body - Google Patents

Abstract

(57) [Abstract] [Purpose] By combining cushion members with different hardness, it is possible to obtain a desired sitting comfort, and even when a load is applied, steps or openings may occur between the cushion members. There is provided a seat cushion body. [Structure] The fitting recess 4 is provided between the cushion members 3, 4, 5 and 6 which are divided into a plurality of blocks and have different hardnesses.
A and 4b and fitting protrusions 5a and 6a are formed, and these are combined to form a seat cushion body. These mating recesses 4
At least one of the a and 4b and the fitting protrusions 5a and 6a is formed into an undercut shape to prevent a step or an opening from occurring during seating.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cushion for a vehicle seat.

[0002]

[Prior art]

 The cushioning body for automobile seats is generally made of a material having uniform hardness as a whole, but as shown in Japanese Patent Publication No. 52-1346 and Japanese Utility Model Publication No. 62-29145, cushions having different hardnesses are used. It has also been proposed to combine members to obtain a desired sitting comfort. However, as shown in FIG. 5, this conventional main seat cushion body has a cushion member 20 having low hardness and a cushion member 21 having high hardness connected by a vertical surface, as shown in FIG. When seated on it, a step difference may occur between the cushion member 20 having a low hardness and the cushion member 21 having a high hardness, or one may be pushed in the direction in which the load is applied as shown in FIG. Therefore, there is a drawback that an opening is generated between the two and the sitting comfort is impaired.

[0003]

[Problems to be solved by the device]

 The present invention solves the above-mentioned conventional problems, and by combining cushioning members having different hardnesses, a desired sitting comfort can be obtained, and even when a load is applied, the cushioning members can be separated from each other. The purpose is to provide a seat cushion that does not have steps or openings.

[0004]

[Means for Solving the Problems]

 The present invention, which has been made to solve the above-mentioned problems, provides a seat cushion body in which cushion members of different hardness, which are divided into a plurality of blocks, are combined, and a fitting recess and a fitting member are provided between the cushion members. It is characterized in that a convex portion is formed, and at least one of the fitting concave portion and the fitting convex portion is undercut.

[0005]

[Action]

 Since the seat cushion body of the present invention is a combination of a plurality of cushion members having different hardnesses, a desired sitting comfort can be obtained. In addition, since a fitting recess and a fitting projection are formed between each cushion member, and one of these fitting projections and recesses is undercut, it is seated as shown in the following examples. In this case, it is possible to prevent a step or an opening from being formed between the cushion members at the time of hitting, and it is possible to maintain a good sitting comfort.

[0006]

【Example】

 Hereinafter, the present invention will be described in more detail with reference to the embodiments of FIGS. FIG. 1 is a sectional view of the first embodiment, 1 is a panel frame made of metal or resin, 2 is a cushion body incorporated inside the panel frame 1, and the cushion body 2 is shown in FIG. As shown, the cushion members 3 to 6 are divided into four blocks.

The cushion member 3 is a relatively soft member that forms the front portion of the main cushion, the cushion member 4 is a medium-hard member that forms the rear portion of the main cushion, and the cushion members 5 and 6 are the side cushions. It is a rigid one. As shown in FIG. 1, the tips of the inner side surfaces of the cushion members 5 and 6 are fitting projections 5a and 6a that are slanted downward, and the cushion members 4 are fitted on both side surfaces to accommodate them. Recessed portions 4a and 4b are formed. The fitting recesses 4a and 4b are undercut.

Insert wires 7 and 8 are inserted on both sides of the cushion member 4 to exert a reinforcing effect. Although not shown, similar undercut fitting recesses and fitting projections are also formed between the cushion members 5 and 6 and the cushion member 3. Further, such fitting concave and convex portions may be formed between the cushion member 3 and the cushion member 4 if necessary.

The seat cushion body according to the first embodiment having the above-described structure has an undercut-shaped fitting unevenness between the cushion members 3 and 4 and the cushion members 5 and 6 that form the side cushion. Since the portions are formed, no significant step is generated between the cushion members 3 and 4 and the cushion members 5 and 6 when seated. Even when seated on the side part, since the cushion members 5 and 6 have a high hardness, a force acts in the direction of flipping up the fitting protrusions 5a and 6a, and the cushion members 5 and 6 It does not create a large opening in between. Therefore, an excellent riding comfort can always be obtained regardless of the seating position.

FIG. 3 shows a second embodiment of the present invention, and shows an example in which a fitting uneven portion between the cushion members 3 and 4 and the cushion members 5 and 6 is provided in the horizontal direction. . In this case as well, it is possible to obtain the same effect as that of the first embodiment. Further, FIG. 4 shows a third embodiment of the present invention, in which the same operational effects as described above can be obtained.

[0011]

[Effect of device]

 As described in detail above, since the seat cushion body of the present invention is a combination of a plurality of cushion members having different hardnesses, a desired sitting comfort can be obtained. In addition, since one of the cushion members has an undercut-shaped fitting concavo-convex portion, it is possible to prevent a step or an opening from occurring between the cushion members when seated, which is good. There is an advantage that you can maintain a comfortable sitting. Therefore, the present invention is of great practical value as a seat cushion body that solves the conventional problems.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a first embodiment.

FIG. 2 is a perspective view showing the appearance of the first embodiment.

FIG. 3 is a sectional view showing a second embodiment.

FIG. 4 is a sectional view showing a third embodiment.

FIG. 5 is a cross-sectional view showing a conventional example.

FIG. 6 is a cross-sectional view showing a defect of a conventional example.

FIG. 7 is a cross-sectional view showing a defect of a conventional example.

[Explanation of symbols]

 3 Cushion member 4 Cushion member 5 Cushion member 6 Cushion member 4a Fitting recess 4b Fitting recess 5a Fitting projection 6a Fitting projection

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Claims (1)

[Scope of utility model registration request] 1. A seat cushion body comprising a combination of cushion members (3), (4), (5), (6) divided into a plurality of blocks and having different hardnesses.
Between the (3), (4), (5), and (6), the fitting recess (4a),
(4b) and fitting protrusions (5a), (6a) are formed, and at least one of these fitting recesses (4a), (4b) and fitting protrusions (5a), (6a). An undercut cushion for seats.