JP3093962B2 - Skin-covered molded cushion body and its manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a skin-covered cushion used mainly for interior materials of vehicles such as armrests for automobiles and a method of manufacturing the same.

[0002]

2. Description of the Related Art A skin-covered molded cushion body in which a skin material is covered on a surface of a base material via a cushion layer, in which the base material and the skin material are both bonded and integrated with the cushion layer, is used for a vehicle interior. It is widely used for materials, etc. than before,
In this type of conventional skin-covered molded cushion body, the upper mold on which the base material is set is adhered to the lower mold in which the skin material is suction-adhered to the inner surface, and the periphery of the base material is closely attached to the end of the skin material. The foamed synthetic resin is molded by injecting and foaming a foamed synthetic resin material into the cushion layer space so that a cushion layer space is formed between the surface of the material and the skin material. There has been a problem that the foamed synthetic resin material oozes out from the contact surface between the peripheral edge of the base material and the skin material and adheres to the back surface of the base material together with the foaming gas generated at the time of foaming of the material, resulting in poor mounting and lowering of mounting accuracy. Therefore, before the injection of the foam synthetic resin material, adhesive sealing is performed over the entire periphery of the peripheral surface of the base material and the surface of the skin material. There is a problem that the gas remaining in the interior often causes defective products such as wrinkling of the skin material and swelling of the skin material.

[0003]

The problem to be solved by the present invention is to solve the above-mentioned problems, and there is no protrusion of the foamed synthetic resin on the back surface of the base material so that the finish is good and there is no defective mounting. An object of the present invention is to provide a skin-covered cushion body having a high mounting accuracy, and to provide a method of manufacturing a skin-covered cushion body for manufacturing such a skin-covered cushion body with good yield.

[0004]

According to the present invention which has solved the above-mentioned problems, the terminal of the skin material covered on the surface of the molding base via the cushion layer is held on the back side of the molding base. In the skin-covered molded cushion body, the molding base material is provided on the periphery of the folded piece portion divided by a hinge portion through a hinge portion, and is extended from the periphery of the cushion layer on the surface of the folded piece portion. Wherein the folded thin portion is layered and the folded piece portion is folded back from the hinge portion together with the thin cushion layer and is held on the back surface of the molding base material. Item 1
According to the invention, in such a skin-covered molded cushion body, a locking hole is provided in the folded-back portion, and the locking hole is engaged with a locking pin provided on the back surface of the molding base to be folded. The invention according to claim 2 is such that the piece portion is held on the back side of the molding base material. In these inventions, the invention is the invention according to claim 3 wherein the skin material is bonded to the cushion layer including the cushion thin layer. and then, while for aspiration contact the skin material to the lower mold of the inner face, the upper die via a hinge portion to the peripheral edges of the main body a plurality
A molding base in which the folded pieces are divided is set, and the upper mold and the lower mold are combined to form a cushion layer space between the molding base and the skin material. A cushion layer including a cushion thin layer formed by injecting a foamed synthetic resin material into a space for the cushion layer and foaming the cushion layer on the surface of the molding substrate so that the periphery thereof reaches the folded-back portion as a cushion thin layer. The molding base material and the skin material are adhered and integrated through the mold, and after demolding, the periphery of the skin material is folded back from the hinge portion together with the folded piece portion on which the cushion thin layer is layered, and held on the back side of the molding base material. A method for producing a skin-covered molded cushion body according to the fourth aspect of the present invention is provided.

[0005]

Next, preferred embodiments of the present invention will be described. First, FIG. 1 shows an automobile armrest as an example of a preferred embodiment of the invention described in claim 1. The illustrated armrest for an automobile has a skin material 4 on the surface of a cushioning layer-attached substrate 1 in which a cushioning layer 3 is layered on the surface of a molding substrate 2, and the terminal thereof is placed on the back side of the molding substrate 2. It is the one that has been reached and adhered. This molding base material 2 is formed of a folded arm part 2 divided into a plurality of parts via a hinge part 2b around the periphery of a main body part 2a molded into a required armrest shape with a hard synthetic resin having good adhesion such as ABS resin.
c. In addition, the cushion layer 3 layered on the surface of the molding base material 2 has its peripheral edge layered on the surface of the folded piece portion 2c as a cushion thin layer 3a. The base material 1 with a cushion layer is covered with a skin material 4 in a state in which the folded piece portion 2c is held together with the thin cushion layer 3a on the back side of the base material 2 from the hinge portion 2b. The means shown in the figure as means for bending the folded piece portion 2c together with the cushion thin layer 3a from the hinge portion 2b and holding the folded piece portion 2c on the back side of the molding base material 2 is as follows.
A locking hole 5 is provided in the folded piece portion 2c, and when the locking hole 5 is folded toward the back surface of the molding base 2, the locking hole 5 is formed.
An arrowhead-shaped locking pin 6 that engages with this is disposed at a position corresponding to the above, and the two are engaged to hold the folded piece 2 c on the back side of the molding base material 2. The type of the skin material 4 is not limited, but in the illustrated example, a plastic film is laminated on the back surface of the moquette to prevent air permeability. The cushion layer 3 is a molded cushion body such as a polyurethane foam which is foamed and molded between the molding base material 2 and the skin material 4 and integrated with both. Then, the terminal of the skin material 4 is a folded piece 2 at the periphery of the main body 2a.
c and the cushion thin layer 3a
To the back side, and cut off the surplus part.
It is adhered to. It should be noted that the above-mentioned thing is bonded and integrated with the cushion layer 3 including the cushion thin layer 3a of the base material 1 with a cushion layer, and the folded piece portion 2c is folded back and held on the back side of the molded base material 2. Although the terminal of the skin material 4 is automatically held on the back side of the molding base material 2, the skin material 4 does not necessarily need to be bonded and integrated with the cushion layer 3 including the cushion thin layer 3a. There is no.

In such a structure, the peripheral edge of the cushion layer 3 is a thin cushion, though the cushion layer 3 is a molded cushion body formed by foaming between the molding base material 2a and the skin material 4. As the layer 3a is wound around the back side of the molding base 2 together with the folded piece 2c continuously connected to the periphery of the main body 2a of the molding base 2 via the hinge 2b as a layer 3a, when foaming the cushion layer 3, Even if a gap is formed between the peripheral edge of the molding base material 2 and the skin material 4, and even if the foamed synthetic resin material leaks from the gap, it does not adhere to the back side serving as a mounting surface to a vehicle or the like, resulting in a beautiful finish. As a result, the edge of the molded product is soft and the outer edge of the molded product 2 is soft, and the skin material 4 is formed. All it does not also being damaged by hitting directly to the peripheral edge of the wood 2.

Next, as an example of a preferred embodiment of the present invention described in claim 4, a method of manufacturing the above-described armrest for a vehicle will be described in detail with reference to FIGS. In the figure, reference numeral 10 denotes a lower die, and 11 denotes an upper die which can be freely adjusted to the lower die. When forming an automobile armrest with the lower die 10 and the upper die 11, first, the lower die 10
The outer periphery of the skin material 4 is clamped by placing the skin material 4 on the inner surface of
The film is laminated on the back surface by applying a vacuum pressure to the pores 10a while pressing by means of the second mold 2, and the non-breathable skin material 4 is brought into close contact with the mold surface of the lower mold 10, while the upper mold 11 has the main body 2a. A molding base 2 having a folded piece 2c connected to a peripheral edge of the upper mold 11 via a hinge 2b is set.
0 and the molding base 2 in this state.
A space for the cushion layer is formed between the cover material and the skin material 4. If a foam synthetic resin material such as a foamed polyurethane resin is injected into this cushion layer space and foamed, the foam synthetic resin material is folded into the folded piece portion. The cushion layer 3 is formed by filling the main body 2a with the cushion thin layer 3a attached between the gaps 2c and the skin material 4 and the cushion thin layer 3a being mounted therebetween. Then, after the completion of the foam molding, the mold is opened and the mold is released, and the molded article shown in FIG. 4 is taken out. The folded piece portion 2c to which the peripheral edge of the skin material 4 is adhered is joined to the cushion thin layer 3a and the molding base material 2 together. It is folded into the back surface, and the locking hole 5 of the folding piece part 2 is inserted and locked into the arrowhead-shaped locking pin 6, and thereafter, the surplus part of the skin material 4 reaching the back side of the forming base material 2 is cut off. Terminal molding base material 2
The adhesive may be adhered to the substrate by an ordinary adhesive means such as an adhesive or a tucker.

[0008]

As apparent from the above description, according to the present invention, a folded piece portion is connected to the periphery of the molding base via a hinge portion, and a thin cushion layer around the periphery is layered on the folded piece portion. Since the cushion layer is molded and integrated as described above, the folded piece portion is folded back from the hinge portion together with the cushion thin layer and the skin material is covered in a state held on the back side of the molded base material, so that the molded base material is A molded product having a good finish in which a part of the foamed synthetic resin does not leak and adhere to the back surface can be molded with a good yield, and there is no occurrence of defective mounting to a vehicle and a decrease in mounting accuracy. In addition, the peripheral edge of the molding base material is wrapped with the thin cushion layer, and the edge of the molded product becomes elastic and soft, so that the impact on the human body during a traffic accident can be reduced and damage can be prevented. In addition, there are various advantages such that the skin material can be used for a long period without being damaged by the periphery of the molding base material. Further, according to the method of the present invention, it is possible to easily produce a skin-covered molded cushion body having the above-mentioned features with a high yield. Therefore, the present invention greatly contributes to the development of the industry as a skin-molded cushion body which solves the conventional problems and a method for manufacturing the same.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing an example of a preferred embodiment of a skin-covered molded cushion body of the present invention.

FIG. 2 is a partially cutaway perspective view showing one example of a molding base material of the present invention.

FIG. 3 is a sectional view showing an example of a vacuum forming apparatus used in the method of the present invention.

FIG. 4 is a partially cutaway perspective view showing a molded product according to the method of the present invention in a detached state.

[Explanation of symbols]

 2 Molding base material 2b Hinge part 2c Folding piece part 3 Cushion layer 3a Cushion thin layer 4 Skin material 5 Lock hole 6 Lock pin 10 Lower mold 11 Upper mold

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B68G 5/00 A47C 31/02 B68G 7/00

Claims (4)

(57) [Claims] 1. A cushion layer (3) on a surface of a molding substrate (2).
A covering material (4) is covered via the base material (2).
In the skin-covered molded cushion body fixed to the back side of
The molding base material (2) is formed into a plurality of pieces through a hinge portion (2b) on the periphery.
Assuming that the divided folded portion (2c) is continuously provided, a thin cushion layer (3a) extending from the periphery of the cushion layer (3) is laminated on the surface of the folded portion (2c). And the folded piece portion (2c) is a hinge portion (2b) together with the cushion thin layer (3a).
A skin-covered molded cushion body folded back to the back side and held on the back surface of the molded base material (2). 2. A locking hole (5) is provided in the folded piece portion (2c), and the locking hole (5) is provided on a back surface of the molding base (2). ) To engage the folded piece (2c)
The skin-covered molded cushion body according to claim 1, which is held on the back surface of (2). 3. The molded cushion body according to claim 1, wherein the skin material (4) is adhered to the cushion layer (3) including the cushion thin layer (3a). 4. A skin material is attracted and adhered to the inner surface of the lower mold, while the upper mold is divided into a plurality of parts by a hinge at the periphery of the main body.
A molding base on which the split pieces are successively set is set, and the upper mold and the lower mold are matched to form a cushion layer space between the molding base and the skin material. A cushion layer including the cushion thin layer is formed by injecting a foamed synthetic resin material into the space for the layer and foaming the foam to form a cushion layer on the surface of the molding base so that the periphery thereof reaches the folded-back portion as a cushion thin layer. It is characterized in that the molding base material and the skin material are adhered and integrated through the intermediary, and after removal from the mold, the periphery of the skin material is folded back from the hinge portion together with the folded piece portion on which the thin cushion layer is layered, and held on the back side of the molding base material. Method for producing a skin-covered molded cushion body.