JPS58168550A - Skin member of sheet for car and its molding method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of forming a skin member for a vehicle seat, in which a skin, a foam wadding, and a backing fabric are stacked and sewn together to form a single piece.

Conventionally, the outer skin, wadding, and lining fabric have been integrally formed by sewing as described above. Therefore, since they are formed by sewing, it is difficult to sew them precisely in a predetermined position, and processing to prevent the sewing thread from fraying is required. In addition, since each component is independent in the parts other than the sewn part, the load is concentrated on the sewn part, and there is a risk of the sewing thread breaking after long-term use. Furthermore, in the case of sewing, the seamed portion was not constant due to the elasticity of the wadding, and a skin member having an aesthetically pleasing surface shape of a sheet could not be obtained.

Therefore, it is an object of the present invention to eliminate such defects of conventional products, and the first invention provides grooves for forming a quilting pattern on the surface of the wade ink, and in these grooves, the outer skin and wadding cover are formed. The second invention relates to a skin member for a vehicle seat, which is formed by pressurizing and fusing three parts and adhering the entire surface of the skin to the surface of the wadding via a true melt adhesive. When molding the skin member, the skin is integrally bonded to the wadding by applying a cylindrical frequency wave, and at the same time, the three members of the skin, wadding, and wadding cover are pressure-fused together in the groove of the wadding.

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows a vehicle seat formed using the skin member (A) according to the present invention, and FIGS. 2 and 3 show the skin member (4) according to the present invention. It is composed of three parts: a flat plate-shaped wadding (2) and a wadding cover (3), and these constituent parts (1), (2), and (3) are all synthetic materials that can be welded together by applying high frequency. It is a resin material, and (A) (A) in the figure are three parts wadding (2).
The quilting pattern is formed by pressurizing and fusing in the groove (1) for forming the quilting pattern, and the skin (1) and the wadding (2) are made of hot melt adhesive (
4) are glued together.

Figure 4 shows the wadding (2) before being formed into the skin member (4).
), and grooves (1) for forming a quilting pattern are provided on the surface of this wadding (2) by router processing. Also, is it a thin flat plate-shaped wadding material? It is also optional to glue slab materials to the core with gaps between them to form concave grooves for forming the quilting pattern (FIG. 11).

The above skin member (A) is molded in the steps shown in FIGS. 5 to 12.

First, a solvent-type hot melt adhesive (4) is applied to the back surface of the skin (1) (or the surface of the wadding (2)) by an appropriate method (Fig. 5), and the liquid hot melt adhesive (
4) is dried and solidified (Figure 6).

Next, the skin (1) with the dried and solidified hot melt adhesive (4) is placed on the lower die of a high frequency welding machine (FIG. 7). The lower mold ■ consists of a lower mold OP for adhering the skin (1) to the wadding (2) and a lower mold 6) for forming the quilting pattern. Both of these lower molds 6υ6a are equipped with high-frequency electrodes. Each of them is provided independently and protrudes with a gap between them. The lower mold 6υ for contacting the skin has a flat joint surface on the surface to be processed, and has a large number of air intake holes (
31a) (31a)... is opened and this intake hole (31a)... is opened.
a) (31a)... Apply vacuum suction to place the skin (1) on the lower mold 0υ9 without wrinkles (No. 9)
figure). Therefore, it is desirable that this vacuum suction be performed sequentially, rather than all at once on the entire surface of the epidermis (1).

In addition, the epidermis (1) should be placed in the lower mold Op to prevent VC wrinkles from occurring).
It is also optional to use other means as long as they can be placed on top.

The lower mold for forming the quilting pattern consists of two upright pieces (32a) (32a) that are stood up with a gap of approximately the same width as the concave groove of the wadding (2)...αI, and this upright piece (32a).
a) A spring (32b) that makes the spring (32a) elastically repel, and the elastic force of the spring (32b) causes the epidermis (
1) Wadding (2) concave l! 144j.

In the figure, reference numeral 00 denotes an upper die which is an electrode of a high-frequency welding machine, and its joint surface with a workpiece is formed into a flat shape, and is attached to a machine body (not shown) so as to be movable up and down in the vertical direction.

Thus, the epidermis (1) is formed between the upper mold θ1 and the lower mold (G).
, wadding (2), and wadding cover (3) are stacked vertically to form a lower mold 0' for forming a quilting pattern.
4 together with the skin (1) into the groove HH of the wadding (2) (Fig. 10).

Next, the upper mold (G) is lowered and the laminates (1) (2) (
3) Pressurize. Then, the lower die 0'4 for forming the quilting pattern descends against the elastic force of the spring (azb) and touches the base (
By applying high frequency at the same time as grounding to (b), three members (1
)(2) and (3) are fused together to form a quilting pattern (a). Simultaneously with this pattern formation, the hot melt adhesive (4) is melted by high frequency using the lower mold 0 and the upper mold for skin adhesion, and the skin (1) is adhered to the wadding (2) ( Figure 11). When bonding this skin (1), there is a gap between the bottom mold 6'4 for bonding the skin and the bottom mold 6'4 for forming the quilting pattern.
) wrinkles do not occur. By releasing the mold, the slack formed in the gap between the lower mold 0 and Ct'4 can be removed by the elasticity of the wadi 61 ring (2). 4) can be formed.

In the first invention, the skin is adhered to the wadding, and the skin, wadding, and wadding cover are fused together in the grooves of the wadding, so even if the seat is used for a long time after assembly, the skin will stretch and wrinkles will not occur. This does not occur, and since the skin is fixed to the wadding, the quilting pattern, which is the shape of the ice surface of the red skin member, will not be deformed. Furthermore, since the wadding is provided with grooves for forming the quilting pattern in advance, it is possible to provide a skin member having a quilting pattern of a predetermined shape on its surface. In addition, since a hot melt adhesive was used, no wrinkles would occur on the skin when it was bonded.

As described above, the second invention can simultaneously perform the entire surface adhesion of the skin and the integral integration of the skin, wadding, and wadding cover. Therefore, it is easy to mold, has excellent workability, and can be manufactured at low cost.Furthermore, because of simultaneous molding, wrinkles are less likely to occur, and a skin member of constant quality can be provided.

In addition, the intended purpose can be achieved.

[Brief explanation of drawings]

Fig. 1 is a usage state diagram of the skin member according to the present invention, Fig. 2 is a perspective view of the skin member according to the present invention, Fig. 3 is an enlarged vertical sectional view of Fig. 2, and Fig. 4 is a perspective view of wadding. FIGS. 5 to 12 are longitudinal cross-sectional views illustrating the order of the molding process according to the present invention. In the figure, (1) is the epidermis, (2) is the wadding,
(3) shows the wadding cover, and (4) shows the hot mate adhesive. Patent Applicant: Tachikawa Spring Co., Ltd. Procedural Amendment (Patent Office Examiner's Complaint) 1. Indication of the Case 1982 Patent Application No. 53359 Vehicle seat skin member and its molding method Name (name)
Tachikawa Spring Co., Ltd. 5. Date of amendment order (voluntary amendment) Date of amendment: Month, Day 7, 1939. Contents of the amendment As per the appendix, Claims (1): A foam wadding with grooves for forming a quilting pattern on its surface. A quilting pattern is formed by bonding the skin, the wadding, and the wadding cover together on the surface using a melt adhesive, and pressurizing and fusing the skin, wadding, and wadding cover in the grooves of the wadding. Characteristics of vehicle seat skin components. (2) Apply adhesive to the back side of the skin or the surface of the wadding, and provide grooves for forming a quilting pattern on the surface of the foam wadding, then apply the skin on the surface of the wadding and cover the wadding on the back side. The entire surface of the skin is adhered to the surface of the wadding by applying pressure and applying high frequency to each layer, and at the same time, the skin, the wading ring, and the three parts of the wadding cover are fused together in the concave grooves of the wadding. A method for forming an opening of a skin part of a vehicle seat, characterized by forming a quilting pattern. -2- 245-

Claims (2)

[Claims] (1) The skin is integrally bonded to the surface of the foam wadding, which has grooves for forming a quilting pattern on the surface, using hot melt adhesive, and the skin, wadding, and wadding cover are bonded together in the grooves of the wadding. A skin member for a vehicle seat, characterized by forming a quilted pattern by pressurizing and fusing three members. (2) Apply Hot Null 1 adhesive to the back surface of the skin or the surface of the wadding, and provide grooves for forming a quilting pattern on the surface of the foam wadding, then apply the skin to the surface of the wadding and the wadding cover to the back surface, respectively. Laminate them, pressurize them, and apply high frequency to adhere the entire surface of the skin to the surface of the wadding, and at the same time form a quilting pattern in which the three components of the skin, wadding, and wadding cover are fused together in the grooves of the wadding. A skin member for a vehicle seat characterized by: