JPH057672A - Structure for enveloping and fitting cover of cushion body - Google Patents

Abstract

PURPOSE:To maintain a good appearance without impairing the cushion property of a seat and without generating wrinkles and position-shifting in the seat cover by long-term use. CONSTITUTION:The seat cover 2 can be enveloped and fitted with simple equipment by devising the method for enveloping and fitting the seat cover 2 of the seat 1, for example, for rolling stock. Easy correction is possible if the degree of enveloping and fitting is defective; in addition, many hooks 3b to 3b are densely implanted on the rear surface of the cover 3 to form hooking members on one side of a surface fastener 4. On the other hand, many hoop pieces 4a to 4a to form the detaining members on the other side of the surface fastener 4 are densely implanted on a cushion pad 2 in correspondence to these hook pieces 3b to 3b. The cover 3 can be enveloped and fitted in the state of maintaining tight contact with the cushion pad 2 over the entire surface thereof by the surface fastener 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for wrapping a cover in a cushion body such as a vehicle seat on a cushion pad.

[0002]

2. Description of the Related Art Conventionally, for example, in the above-mentioned vehicle seat, as a method of wrapping a seat cover in a seat pad, there are a method using an adhesive and a method using a surface fastener.

In the former case, as shown in FIG. 5, the seat surface of the seat pad 10 (or the back surface of the seat surface of the seat cover).
For example, hot-melt type adhesive 11 is applied to 10a to make it dry beforehand, and then, as shown in FIG. 6, the seat pad 10 is set in the pressing die 12, while the seat cover 13 is pressed. The upper mold 14 is set, both molds 12 and 14 are clamped, and the seat cover 13 is pressed against the seat pad 10. And in this pressed state,
The seat cover 13 can be bonded to the seat pad 10 by heating and melting the adhesive 11 with a heating device (not shown) and then cooling and solidifying the adhesive.

In the latter method, as shown in FIG. 8, one hook member 20a of the hook-and-loop fastener 20 is integrally molded and attached to an appropriate number of places of the seat pad 21, while it is attached to the back surface of the seat cover 22. Is the other loop member 20
The seat cover 22 can be wrapped around the seat pad 21 by attaching b and attaching and locking both members 20a and 20b.

Here, the hook members 20a to 20a were integrally attached to the seating surface of the seat pad 21 when the seat pad 21 was formed by the following method.

That is, as shown in FIG. 7, the magnets 25 to 25 are embedded in predetermined positions of a molding die (shown by a lower die in the figure) 23 on the side for molding the seat surface of the seat pad 21, while the magnets 25 to 25 are mounted. As shown in FIG. 9, a steel tape 26 is attached to the back surface of each hook member 20a to be attached, and the steel tape 26 is attached to the magnet with the hook member 20a positioned between the steel tape 26 and the magnet 25. The hook member 20a is set on the lower mold 23 by adsorbing it onto the lower mold 23, and then a predetermined molten resin is poured onto the molding surface of the lower mold 23, and then the upper mold 2
By closing the mold 4 and cooling and solidifying the molten resin, the seat pad 21 in which the hook members 20a to 20a are integrally formed on the seat surface can be obtained.

[0007]

Conventionally, the seat cover has been wrapped by the above method, but these conventional packaging methods have the following problems.

That is, in the case of the former method, a device for applying the adhesive 11, upper and lower pressing dies 12, 14 and devices for heating and cooling are required, which requires a lot of equipment and processes. In addition, there is also a problem that it cannot be corrected if there is a wrinkle or other finish defect after bonding.

On the other hand, in the case of the latter method, the steel tape 26 attached to the back surface of the hook member 20a.
Remains inside the seat pad 21, which gives a seated person a feeling of foreign matter. Further, according to this method, the seat cover 22 is wrapped in the seat pad 21 in a state where the seat cover 22 and the seat pad 21 are partially in contact with each other.
As shown in FIG. 3, there is a drawback that wrinkles 22a are generated on the seat cover 22 due to, for example, expansion or displacement of the seat cover 22 due to use.

The present invention has been made to solve these problems of the prior art, and the seat cover can be wrapped with simple equipment, and if the packaging condition is poor, it can be easily corrected. It is an object of the present invention to provide a cover wrapping structure in a cushion body that can maintain the good appearance even when used for a long period of time without impairing the cushioning property.

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems of the present invention, a large number of hook pieces are densely formed on the back surface of the cover to form one hook-stop member of a surface fastener. Corresponding to the hook pieces, a large number of loop pieces are densely formed on the cushion pad to form the other locking member of the surface fastener, and the cover is adhered to the cushion pad over the entire surface by the surface fastener. It is characterized in that it has a structure in which it is wrapped in a closed state.

[0012]

According to the above structure, the cover is wrapped around the entire surface by the surface fastener so as to be in close contact with the cushion pad. Further, the cover can be easily removed from the cushion pad by peeling off the hook piece of the surface fastener from the loop piece.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to FIGS. In the following description, a vehicle seat is used as an example of the cushion body, and both the seat cushion and the seat back of this seat have the same structure, so both are collectively referred to as a "seat".

First, as shown in FIG. 1, the seat cover 3 of the seat 1 is wrapped around the seat pad 2 by a surface fastener 4.

Although not shown, the seat pad 2 is formed, for example, by foam-molding a soft urethane foam using upper and lower molds, and its seat surface 2a is formed in a substantially concave shape on both sides. Has a slightly raised side holder portion (top plate side portion). Further, wood grain grooves 2b to 2b for decorative grooves are formed along the boundary between the side holder portion and the central main seating portion (top plate portion). Further, on the lower surface of the seat pad 2, concave grooves 2c to 2c for terminal processing of the seat cover 3 are formed as shown in the figure.

As shown in FIG. 2, a large number of loops 4a to 4a are formed on the seating surface 2a and the front, rear, left and right side surfaces of the seat pad 2 thus formed, as shown in FIG. It is densely formed over the entire surface.

These loops 4a to 4a are formed by molding melt fiber (binder fiber) mixed with synthetic fiber cotton and thermoforming it, and molding the seating surface side thereof before molding the seat pad 2. The sheet is preliminarily set in a mold, and after that, urethane foam that has been heated and melted is injected to form the seat pad 2, so that the seat pad 2 is integrally formed. Here, since the synthetic fiber cotton and the melt cotton that are the raw materials have a melting point sufficiently higher than that of the urethane foam to be injected, they do not melt when the molten urethane foam is injected, A large number of loops are densely formed on the seat surface or the like of the seat pad 2 so as to form one locking member of the fastener 4.

On the other hand, the seat cover 3 is formed by, for example, sewing a plurality of skin pieces cut into a predetermined shape, and the back surface thereof has the surface fastener 4 as shown in FIG.
Numerous hook pieces 4b to 4b for forming the other hooking member of
Are formed densely over the entire surface. The hook members (hook pieces 3b to 3b) on the side of the seat cover 3 are formed by, for example, sewing a hook-side sheet material of a generally used surface fastener.

The seat cover 3 formed in this way
The sewn portions 3b to 3b are pushed in along the wood grain grooves 2b to 2b of the seat pad 2 so that the decorative groove 1 of the seat 1
a to 1a are formed, and the end portion 3c thereof is pressed into the concave grooves 2c to 2c formed on the bottom surface of the seat pad 2 and the end portion 3c is subjected to the end treatment, and is affixed to the seat pad 2 ( (See FIG. 1).

The present embodiment has the above-mentioned encapsulation structure, and thus has the following operational effects.
That is, since the seat cover 3 is tightly wrapped around the seat surface of the seat pad 2 and the like by the surface fastener 4, it is not necessary to apply an adhesive unlike the conventional case.
Therefore, no equipment such as upper and lower pressing molds, a vacuuming device connected to the pressing molds, a heating / cooling device, etc. is required at all, so that each of these steps can be eliminated.
Further, since the surface fastener is used for wrapping instead of the adhesive, the seat cover 3 can be peeled off when the wrapping finish is poor, and the defective portion can be easily corrected. ..

Further, the surface fastener 4 in this example is
Since the seat surface and the side surface of the seat 1 are attached over the entire surface, the seat cover 3 is wrapped in the state of being closely attached over the front surface. As a result, wrinkles do not occur due to the seat cover being stretched or displaced due to long-term use as in the conventional case.

Since a large number of loops 4a to 4a forming one locking member of the surface fastener 4 are set in a molding die so as to be formed over the entire surface of the seat pad 2 such as a seat surface, It is not necessary to use a magnet to position and hold the mold in a predetermined position as in the prior art, and therefore, the conventional steel tape is not necessary, which does not impair the cushioning property of the seat.

Also, the sewn portions 3b to 3b of the seat cover 3
Is pushed into the woodgrain grooves 2b to 2b of the seat pad 2, the hook pieces 4b to 4b on the sewn side are hooked and locked by the loop pieces 4a to 4a formed on the woodgrain groove 2b side. The decorative grooves 1a to 1a of the sheet can be formed easily and with good appearance.

Here, in the present embodiment, the sewn portions 3b to 3b of the seat cover 3 are exemplified with the hook pieces 4b to 4b similar to the other portions, but the sewn portions 3b to 3b will be described. , A large number of reinforcing hook pieces 4c-
It is also possible to sew or adhere the densely packed 4c. The reinforcing hook pieces 4c to 4c are all directed toward the base direction (upward in the drawing) of the sewn portions 3b 'to 3b', and the sewn portions 3b 'to 3b' are made into the woodgrain grooves 2b to 2b of the seat pad 2. When it is pushed in, it is locked to the loop pieces 4a to 4a on the side of the seat pad 2 only in the pulling direction, and functions as a surface fastener. This makes it possible to maintain the decorative groove with a deeper groove feeling for a long period of time.

Further, the terminal processing concave groove 2 formed in the terminal portion 3c of the seat cover 3 and the bottom portion of the seat pad 2.
The hook pieces 4 of the hook-and-loop fastener 4 are also provided in c to 2c.
Since b-4b and loop pieces 4a-4a are formed, the terminal portion 3c is simply hooked and processed by being pushed into the concave grooves 2c-2c.

The present invention is not limited to the above-exemplified seats, but is also applicable to headrests, armrests for rear seats, cushioning bodies such as chairs that are widely used not only for vehicles, but also for beds, for example. It can also be widely applied to cushion bodies.

[0027]

Since the present invention has the above-mentioned structure, the equipment and process for covering can be greatly simplified as compared with the conventional bonding method, and the defective packing can be easily corrected. Becomes

Further, since the entire surface of the cover is closely adhered to the cushion pad, the wrinkles that occur in the case of the conventional partial fixing method using a surface fastener are reliably prevented. Furthermore, since the structure is not such that the surface fastener is partially interposed, the foreign substance feeling as in the prior art is eliminated.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a seat according to an embodiment of the present invention.

FIG. 2 is a partial vertical cross-sectional view of a seat pad.

FIG. 3 is a partial vertical cross-sectional view of a seat cover.

FIG. 4 is an enlarged sectional view of a sewn portion of the seat cover.

FIG. 5 is an explanatory diagram of application of an adhesive to a seat pad in a conventional wrapping method.

FIG. 6 is an explanatory diagram for adhering a seat cover with upper and lower pressing molds.

FIG. 7 is a vertical cross-sectional view of a molding die at the time of molding a seat pad, which is another conventional example of the packaging method.

FIG. 8 is a vertical sectional view of a sheet covered by the same method.

9 is an enlarged view of a main part of FIG.

FIG. 10 is an explanatory diagram of a defect when the conventional packaging method is used.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Seat 2 ... Seat pad 3 ... Seat cover 4 ... Surface fastener 4a ... Clasp member (hook piece), 4b ... Locking member (loop piece)

Claims (1)

Claim: What is claimed is: 1. A covering structure of the cover in a cushion body in which a cover is wrapped in a cushion pad, wherein one hooking member of a surface fastener is provided on the back surface of the cover. While forming a large number of hook pieces to be formed, a large number of loop pieces are formed to form the other locking member of the hook-and-loop fastener on the cushion pad corresponding to the hook pieces. A seat cover wrapping structure in a cushion body, which is wrapped over the entire surface by a surface fastener in a state of being in close contact with the cushion pad.