JPH0212599B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to sheets, and in particular to sheet cushions.

Generally, in a seat cushion, a concave depression is formed in the seat part, that is, the central part, as appropriate from the peripheral surface, so that the seated person can maintain a stable posture and comfortable sitting position. There is. Conventional seat cushions of this type, which are often found in vehicles, have suspension wires embedded in foamed urethane, which is the cushion material, and the wires and a suspension bag made of a skin coated on the urethane. It was held together with a latch and held in place.

This conventional structure will be explained with reference to FIGS. 1 and 2. A indicates a seat cushion, and B indicates a recessed portion formed approximately in the center thereof. 1 is a skin that holds the hanging bag 1a, 2 is foamed urethane, 3 is a wire, and 4 is a latch for connecting the hanging bag 1a and the wire 3.

In conventional seat cushions having such a structure, when the user sits on the seat, the wire, latch, etc. are subjected to the pressure of the user's weight, causing the user to feel an unpleasant foreign body sensation.

In addition, the manufacturing process requires a large number of man-hours, resulting in a drawback that leads to high costs.

As a countermeasure against this defect, some devices use a different method to connect the skin and pad portion.

That is, as shown in FIGS. 3 and 4, a urethane material 5 is interposed between the pad portion 2 and the skin made of high-frequency heat welding material, and high-frequency welders 6, 6'
It is welded by applying pressure.
In addition, 7 in the figure shows the pin stretched on the lower surface of the pad part 2.

However, even in this case, if the welded parts 1a, 1b, and 1c between the skin and the pad are used for a long period of time, they will lose resistance to frictional pressure, etc., and the bonded pad surface will peel off from the base material. However, the drawback was that it lacked durability.

In the seat cushion of the present invention, the drawbacks of the conventional cushion described above are eliminated, and
This is intended to improve the elegance of the finished product's external design. That is, the pad is formed with a sheet material that can be welded by high frequency heat embedded in a predetermined location, and a tape that can be welded by high frequency heat is welded to this sheet material through the surface material using a high frequency welder. , which is completed by integrating the pad and the surface material.

Therefore, the pad and surface material are strongly bonded at predetermined locations by welding the sheet material and tape, so even over long-term use, there will be no peeling phenomenon between the two, ensuring durability. Make it strong. In addition, since wires, latches, etc. are not required, it is easy to work and eliminates the defects of the conventional type described above.

Note that tapes of different shapes can be used, and the surface material is not a single piece, but two pieces (for example, different plate patterns, colors, etc.) can be polymerized or welded together in a butt-like manner. can do.

Therefore, there is a wide variety of design options, and the overlapping or abutting portions can be hidden by a tape of a desired shape, resulting in an elegant appearance.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIGS. 5 and 6, A and A respectively show completed seat cushions of the sheet of the present invention in different configurations, and B and B respectively indicate recessed portions of desired configurations. Further, 8, 8 and 9, 9 are tapes made of a skin and a high-frequency heat welding material, respectively.

If we talk about this configuration and the means of construction,
As shown in FIG. 9, 8 is the above-mentioned outer skin, 10 is a urethane material, and 11 is a back base fabric, and these three materials form the surface layer material. Therefore, the materials for the outer skin, back base fabric, etc.
Although a high-frequency heating welding material is preferred, it is not limited thereto, and the back base fabric 11 may not be used itself. Reference numeral 12 denotes a pad made of urethane foam material, and a sheet member 13 made of a suitable material such as nylon, polyester, or vinyl chloride, which can be welded by high frequency heat, is embedded in a predetermined portion of the pad 12.

14, 14' are high frequency welders, and as can be seen from the figure, the electrode part 14a' of the upper welder 14' is
In the illustrated example, the tip has an enlarged edge, and a tape 9 made of a high-frequency heat welding material (for example, nylon, polyester, vinyl chloride, etc.) is held at the enlarged edge. (FIG. 8) The tape holding portion of this electrode is shaped to suit the shape of the tape. Then, as shown in FIG.
By applying pressure to the electrode, the sheet material 13 and the tape 9 are welded at a predetermined location, as shown in FIG. 9, so that the pad 12 and the surface material side are firmly adhered. It is something.

At this time, the extra flesh of the tape 9 is attached to the electrode 14.
The embossing on the enlarged edge of a' makes it easier to peel off during finishing. This completed state is shown in FIG. Although not essential to the structure of the present invention, means for welding the two surface materials described above will be explained with reference to FIGS. 11 to 13.

In the figure, numerals 8 and 8' are examples of skins having different patterns, colors, etc. In the example shown, both surface materials are in a polymerized state. In this case, at least the epidermis 8,
8' is preferably made of a material that can be welded by high frequency heating. First, as shown in Fig. 12, two surface layer materials are welded together, and then combined with the pad having the sheet material described above, placed in a high frequency welder, and welded by applying pressure. At this time, it goes without saying that the overlapping portion of the surface layer material is hidden by the tape held on the electrode of the upper welder.

As can be seen from the above description, the seat cushion of the present invention is capable of well covering the deficiencies found in the conventional type and, in addition, exhibiting beneficial new effects.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of the appearance of a conventional seat cushion, Fig. 2 is an explanatory diagram of the structure of the cushion shown in Fig. 1 with part of the skin removed, and Fig. 3 is an explanatory diagram of the welding of the pad and the skin in a different type. Fig. 4 is a cross-sectional explanatory view of the finished product of the cushion shown in Fig. 3, Figs. 5 and 6 are explanatory views of the appearance of the seat cushion of the present invention, Figs. 1
Figure 0 shows the welded part of the finished product. still,
Figures 11 to 13 are explanatory diagrams of surface layer material polymerization. 8... Outer skin, 9... Tape, 10... Urethane material, 11... Back base fabric, 12... Padded, 13...
Sheet material, 14, 14'...high frequency welder.

Claims (1)

[Claims] 1. A sheet cushion capable of high-frequency welding is welded by a high-frequency welding means to a pad in which a sheet material capable of high-frequency heat welding is embedded, through the surface material, and the pad and the surface material are integrated. Sheet to be provided.