JPH0580B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial Application Field" The present invention provides a cushion pad with a concave groove for retracting the pull part provided on the trim cover, and the pull part of the trim cover is stuck in the concave groove. The present invention relates to a cushion in which a trim cover is attached along the cushion pad, and a manufacturing method thereof.

"Conventional technology" Conventional cushions of this type include, for example,
There is one shown in Utility Model Publication No. 62-70900.

That is, after applying a mold release agent to the inner surface of the mold in which the protrusion for forming the concave groove of the cushion pad is integrally provided, a foamed resin stock solution is injected to mold the cushion pad having the concave groove. This is a cushion in which the pull part of the trim cover is attached by injecting adhesive into the groove and the trim cover is attached along the cushion pad.

In manufacturing such cushions, a release agent is also applied to the surface of the groove-forming protrusion that is integrally provided inside the mold, so there is no release agent in the grooves of the demolded cushion pad. Molding agent remains.

Since a mold release agent generally inhibits the adhesive action of the adhesive, after removing the mold release agent from the concave groove of the cushion pad, an adhesive is injected into the concave groove to attach the pull part of the trim cover. It is desirable to do so.

Then, the cushion is manufactured by pasting the pull part of the trim cover into the concave groove of the cushion pad with adhesive and attaching the trim cover along the cushion pad.

``Problems to be Solved by the Invention'' However, in manufacturing such conventional cushions, if the release agent in the grooves of the cushion pad is removed and then the adhesive is injected into the grooves, the release agent is removed. The process of removing the molding agent itself is troublesome and time consuming, resulting in an increase in production costs.

Additionally, it is difficult to completely remove the mold release agent from the concave groove of the cushion pad, and if even a small amount of mold release agent remains, the adhesive force of the adhesive will weaken, and it will take time to attach the trim cover to the cushion pad. There was a problem in that the production cost increased.

On the other hand, if adhesive is injected without removing the mold release agent from inside the concave groove of the cushion pad, the adhesive strength of the adhesive will be weakened by the mold release agent and the trim cover will easily peel off from the cushion pad. There was a problem in that wrinkles were likely to occur in the fabric, impairing the appearance quality of the cushion.

Furthermore, there was a problem in that the pull part of the trim cover was not sufficiently stuck in the groove of the cushion pad, and the trim cover could come off and shift due to body pressure when sitting.

In this case, it is conceivable to inject, for example, a strong adhesive into the groove that is not adversely affected by the mold release agent, but this would significantly limit the types of adhesive, leading to increased costs.

The present invention has been developed by focusing on these conventional problems.The adhesive force of the adhesive is not weakened by the release agent, and the trim cover does not peel off from the cushion pad, improving seating comfort and appearance quality. It is an object of the present invention to provide a cushion that can be used in a variety of ways, and a manufacturing method that can reduce production costs.

"Means for Solving the Problems" The gist of the present invention for achieving the above object is as follows: 1. A groove is formed in the cushion pad into which a pull part provided on the trim cover is drawn, and a groove is formed in the groove. By pasting the pull part of the trim cover,
In a cushion in which a trim cover is attached along the cushion pad, the cushion pad is formed by applying a mold release agent to the inner surface of the mold, and then protruding a groove forming material at a portion of the inner surface corresponding to the groove of the cushion pad. A foamed resin stock solution is injected into the installed mold and molded, and after the cushion pad is removed from the mold, a groove forming material is removed to form a groove in the cushion pad, and a groove is formed in the groove of the cushion pad. This cushion is characterized in that the trim cover is attached along the cushion pad by injecting adhesive into the cushion pad, inserting the pulling part of the trim cover into the concave groove of the cushion pad, and pasting the trim cover.

2. By forming a concave groove in the cushion pad into which the pull part provided on the trim cover is drawn, and pasting the pull part of the trim cover into the concave groove,
In a method of manufacturing a cushion in which a trim cover is attached along the cushion pad, a mold release agent is applied to the inner surface of the mold, and then a concave groove forming material is protruded from the inner surface of the cushion pad at a portion corresponding to the concave groove of the cushion pad. Then, a foamed resin stock solution is injected into the mold to form a cushion pad, the cushion pad is demolded, and a groove forming material is separated from the cushion pad to form a groove of the cushion pad, and the groove of the cushion pad is filled with the groove of the cushion pad. The method of manufacturing a cushion is characterized in that the trim cover is injected with adhesive, the pull part of the trim cover is inserted into the concave groove of the cushion pad, and the trim cover is attached along the cushion pad.

``Operation'' To manufacture a cushion, first, a mold release agent is applied to the entire inner surface of the mold, and then
A concave groove forming material is projected and attached to a portion of the inner surface corresponding to the concave groove of the cushion pad.

The concave groove forming material is attached to a predetermined part of the inner surface of the mold coated with a mold release agent using adhesive, etc. as a bonding means so that it will not shift even if the foamed resin stock solution is injected into the mold. It is something that will be done.

Next, a foamed resin stock solution is injected into the mold and hardened to form a cushion pad.

After the cushion pad is foam-molded, the cushion pad is removed from the opened mold, and the groove forming material buried near the upper surface of the cushion pad is separated from the cushion pad to form a groove.

As a result, in the concave groove of the cushion pad,
No mold release agent will adhere.

Adhesive for attaching the trim cover to the upper surface of the cushion pad is injected into the groove of the cushion pad.

In this case, since no mold release agent adheres to the grooves of the cushion pad, there is no need to remove the mold release agent from the grooves before injecting the adhesive.

When attaching the trim cover to the upper surface of the cushion pad, place the trim cover along the upper surface of the cushion pad so that the pull part of the trim cover corresponds to the groove in the cushion pad.

With the trim cover drawn to the cushion pad, the pull part of the trim cover is inserted into the concave groove of the cushion pad and adhered with the adhesive, and the trim cover is attached along the cushion pad.

Since no mold release agent adheres to the grooves of the cushion pad, the adhesive force of the adhesive in the grooves is not weakened by the release agent, and the trim cover can be attached to the cushion pad in a short time.

In the cushion manufactured as described above, the release agent does not adhere to the grooves of the cushion pad, and the adhesive force of the adhesive is not weakened, so the pulling part of the trim cover is firmly held in the grooves. It's attached.

This prevents the trim cover from coming off and shifting from the cushion pad due to body pressure from the buttocks and the like when seated, and does not impair sitting comfort.

In addition, since the trim cover does not easily peel off from the cushion pad, the trim cover does not have wrinkles and has a sharp outer shape that matches the shape of the cushion pad, which prevents the appearance quality of the cushion from being impaired. There isn't.

“Embodiment” An embodiment of the present invention will be described below based on the drawings.

1 and 2 show one embodiment of the present invention, and FIGS. 3 to 9 are diagrams for explaining the manufacturing process of the cushion 10. FIG.

As shown in FIGS. 1 and 2, the cushion 10 has a main portion 1 that directly supports the buttocks of a seated person.
1 and side parts 12, 12, which support the lateral load of the seated person on both sides of the main part 11, are integrally molded.

A pull part 3 of the trim cover 30 is located slightly behind the approximate center of the main part 21 of the cushion pad 20.
A concave groove 23 having a substantially U-shaped cross section is formed in the left-right direction for drawing in the recess 3 .

As shown in FIG.
0 is applied, and then a predetermined portion 72 of the inner surface 72 is applied.
This groove is formed by detaching the concave groove forming material 50 that is attached to protrude from the cushion pad 20 after the cushion pad 20 is demolded.

The concave groove 23 of the cushion pad 20 is formed on the cushion pad 20 after the cushion pad 20 is removed from the mold.
Since the groove forming material 50 is formed by hollowing out and separating from the upper surface 22 of the groove 23, the mold release agent 40 will not adhere to the inside of the groove 23 including the bottom 23a.

The groove forming material 50 is made of silicone rubber or the like, which can be easily separated from the cushion pad 20 after demolding and has excellent heat resistance, and is shaped to correspond to the inside of the groove 23 extending into a narrow width. It is molded.

The groove forming material 50 is attached to a predetermined portion 72a of the inner surface 72 of the lower mold to which the mold release agent 40 has been applied, using a bonding means such as an adhesive, so as not to shift.

The trim cover 30 includes a front cover 31 that covers the front part of the cushion pad 20 and a rear cover 32 that covers the rear part of the cushion pad 20, which are sewn together in accordance with the shape of the cushion pad 20.
Together, the upper surface 22 of the cushion pad 20
It covers the

Both the front cover 31 and the rear cover 32 of the trim cover 30 have a three-layer structure, and are composed of a wading 30b, a wading cover 30c that covers the lower surface of the wadding 30b, and a skin member 30a that covers the upper surface.

The inner edges 31a and 32a of the front cover 31 and the rear cover 32, which face each other, are sewn to each other and form a pull part 33 of the trim cover 30 in correspondence with the groove 23 of the cushion pad 20. are doing.

Adhesive 6 is applied to the concave groove 23 of the cushion pad 20.
0 is injected and the trim cover 30 is attracted to the cushion pad 20, the pull part 33 of the trim cover 30 is inserted into the groove 23 of the cushion pad 20, and the pull part 33 is inserted into the bottom 23a of the groove 23.
The adhesive 60 is used to adhere the adhesive 60 to the adhesive 60.

The outer edge 31b of the front cover 31 and the outer edge 32b of the rear cover 32 are inserted and attached to the lower surface 24 of the cushion pad 10, respectively, so that the trim cover 30 is stretched along the upper surface 22 of the cushion pad 20. ing.

Cushion 10 according to FIGS. 3 to 9
The manufacturing method will be explained below.

First, as shown in FIG. 3, after applying the mold release agent 40 to the entire inner surface 74 of the upper mold 73 and the inner surface 72 of the lower mold 71 of the mold 70, the cushion pad 20 on the inner surface 72 of the lower mold 71 is coated. The groove forming material 50 is attached to a portion 72a corresponding to the groove 23 in a protruding manner.

The concave groove forming material 50 is attached to a predetermined portion 72a of the inner surface 72 of the lower mold 71 coated with the mold release agent 40 with an adhesive or the like so that it will not shift even if the foamed resin stock solution is injected into the inside 70a of the mold 70. Installing.

Next, as shown in FIG. 4, the upper mold 73 and the lower mold 71 are overlapped, and
A urethane stock solution, which is a foamed resin stock solution, is injected into the interior 70a of the mold 70 coated with the mold release agent 40, thereby molding the cushion pad 20.

After foam molding, as shown in FIG. 5, the cushion pad 20 is removed from the mold 70, and then
As shown in the figure, the demolded cushion pad 20
Concave groove forming material 50 buried in the main part 21 of
is removed to form a groove 23.

As shown in FIG.
Inject 0. Concave groove 23 of cushion pad 20
Since the mold release agent 40 is not attached to the inside of the groove 23, there is no need to remove the mold release agent 40 from the inside of the groove 23.

As shown in FIG. 8, when attaching the trim cover 30 to the upper surface 22 of the cushion pad 20,
First, the trim cover 30 is placed along the upper surface 22 of the cushion pad 20 on the wading cover 30c side so that the pull portion 33 of the trim cover 30 corresponds to the groove 23 of the cushion pad 20.

Next, with the trim cover 30 drawn to the cushion pad 20, the pull portion 33 of the trim cover 30 is inserted into the groove 13 of the cushion pad 20.

As shown in FIG. 9, the pulling part 33 inserted into the groove 13 of the cushion pad 20 is held on the receiving jig 80 by the adhesive 6 injected into the bottom 23a of the groove 23.
0, apply the pressurizing part 81 of the press from above the pull part 33 and press it to stick it.

The pull part 33 of the trim cover 30 is attached to the bottom 23a of the concave groove 23 of the cushion pad 20, and then the outer edges 31b, 32b of the trim cover 30 are turned and attached to the lower surface 24 of the cushion pad 10.

Cushion 10 manufactured as above
The seat cushion is attached to a seat frame and fixed to the vehicle floor via a rail unit, thereby forming a seat cushion for a vehicle seat used in a general passenger car.

In the cushion pad 20 foam-molded in the interior 70a of the mold 70, a groove 23 is formed by removing the groove forming material 50 after demolding, and the mold release agent 40 does not adhere to the inside of the groove 23. adhesive 60
Since the adhesive strength of the groove 23 is not weakened, the bottom 2 of the groove 23
The pull part 33 of the trim cover 30 is firmly attached to 3a.

This causes the trim cover 30 to press against the cushion pad 2 due to body pressure from the buttocks when sitting.
It does not deviate from 0 and does not affect the comfort of the cushion 10.

Further, since the trim cover 30 does not easily peel off from the cushion pad 20, wrinkles do not occur on the trim cover 30 and the cushion pad 2
It is possible to obtain a sharp outer shape that matches the shape of the cushion 10, and to improve the luxury feel of the cushion 10.

In the manufacturing process of the cushion 10, after the cushion pad 20 foam-molded in the interior 70a of the mold 70 is removed from the mold, the groove forming material 50 is removed from the cushion pad 20 to form the groove 23. Since the mold release agent 40 does not adhere to the inside of the groove 23, there is no need to remove the mold release agent 40 from the inside of the groove 23 before injecting the adhesive 60.

Bottom 23a of concave groove 23 of cushion 10 pad
Since the mold release agent 40 is not attached to the inside 70a including the mold release agent 40, the bottom part 23 of the groove 23 is
The adhesive strength of the adhesive 60 in a is not weakened, and the trim cover 30 can be attached to the cushion pad 20 in a short time.
It is possible to install the device on the device, reducing manufacturing costs.

As a joining means for attaching the groove-forming material 50 in the above embodiment to a predetermined portion 72a of the inner surface 72 of the lower mold 71 coated with the mold release agent 40, a groove-forming material may be used in addition to an adhesive. Attach a clip or the like to the inner surface 72 of the lower mold 71 to fix the mold 50 to the extent that it does not shift.
It is conceivable to fix it to a predetermined part 72a of the.

In addition, the concave groove 23 of the cushion pad 20 is used to attach the trim cover 30 in the above embodiment.
As the adhesive 60 injected into the bottom portion 23a, a neoprene adhesive, a nitrile rubber adhesive, or the like is suitable.

In addition, if an adhesive made of thermosetting polymer is used, the adhesive 60 can be cured more quickly by heating during pressing, and the trim cover 30 can be attached to the cushion pad 20 in a short time. becomes possible.

In the above embodiment, the cushion 10 for a vehicle seat has been described, but the cushion 10 may be used for general furniture such as a chair.

"Effects of the Invention" According to the cushion and the manufacturing method thereof according to the present invention, the groove of the cushion pad is formed by the groove forming material, so the release agent does not enter the groove, and the adhesive is used to form the trim cover. Since the pull part firmly adheres within the groove, the trim cover does not peel off from the cushion pad, improving durability and maintaining the comfort and appearance quality of the cushion over a long period of time.

Furthermore, according to the method of manufacturing a cushion according to the present invention, since the mold release agent does not adhere to the grooves of the cushion pad, there is no need to remove the mold release agent from the grooves before injecting the adhesive. Since the bonding time is generally shortened, the work of attaching the trim cover to the cushion pad can be shortened, and production costs can be reduced.

[Brief explanation of drawings]

1 and 2 show one embodiment of the cushion of the present invention, FIG. 1 is a sectional view taken along the line -- in FIG. 2, FIG. 2 is a perspective view of the cushion, and FIGS. 3 to 9 3 shows an embodiment of the cushion manufacturing method of the present invention, FIGS. 3 and 4 are explanatory diagrams of forming the cushion pad using a mold, and FIGS. 5 to 7 illustrate the formation of the grooves of the cushion pad. The explanatory drawings up to the injection of adhesive, and FIGS. 8 and 9 are explanatory drawings when attaching the trim cover to the cushion pad. 10...Cushion, 11...Main part, 12
... Side part, 20 ... Cushion pad, 21
...Main part, 22...Top surface, 23...Concave groove, 2
4... Bottom surface, 30... Trim cover, 31... Front cover, 32... Rear cover, 33... Pulling part, 40... Mold release agent, 50... Concave groove forming material, 60
...adhesive, 70 ... mold, 71 ... lower mold, 7
3... Upper mold.

Claims (1)

[Claims] 1. Forming a concave groove in the cushion pad into which the pull part provided on the trim cover is drawn, and sticking the pull part of the trim cover in the groove, so that the trim cover can be attached along the cushion pad. In the attached cushion, the cushion pad is formed by applying a mold release agent to the inner surface of the mold, and then applying a foamed resin to the attached mold by protruding a concave groove forming material into a portion of the inner surface that corresponds to the concave groove of the cushion pad. The cushion pad is molded by injecting a stock solution, and after the cushion pad is removed from the mold, a groove forming material is removed to form a groove, and an adhesive is injected into the groove of the cushion pad. A cushion characterized in that the pull part of the trim cover is inserted and pasted into the concave groove of the cushion pad, and the trim cover is attached along the cushion pad. 2. A method for manufacturing a cushion in which a trim cover is attached along the cushion pad by forming a concave groove in the cushion pad into which the pull part provided on the trim cover is drawn, and pasting the pull part of the trim cover into the groove. After applying a mold release agent to the inner surface of the mold, a concave groove forming material is installed in a protruding manner on the inner surface at a portion corresponding to the concave groove of the cushion pad, and a foamed resin stock solution is injected into the mold. After molding the cushion pad and demolding the cushion pad, the concave groove forming material is removed from the cushion pad to form the concave groove of the cushion pad, and adhesive is injected into the concave groove of the cushion pad, and the pulling part of the trim cover is closed. A method of manufacturing a cushion, characterized in that the cushion is inserted into a concave groove of a cushion pad and adhered thereto, and a trim cover is attached along the cushion pad.