JP2747714B2 - Manufacturing method of vehicle seat - Google Patents

Description

The present invention relates to a method for manufacturing a vehicle seat.

b. Conventional technology Generally, a vehicle seat is provided with a pad serving as a cushioning material fixedly supported by a seat frame and a skin covering the surface of the pad. In many cases, the so-called inverse shape is formed in which a concave portion is formed more continuously than the portion. In order to manufacture such an inverse-shaped vehicle seat, it is necessary to bond the pad and the skin to each other. For example, a urethane adhesive is applied to the surface of the pad, and then the pad is covered with the skin. And a hot-melt adhesive film is interposed between the pad and the skin, and the skin is pressed against the pad surface side with a press device, and heated in this state, whereby the skin is padded. For example, a method of sticking to the surface of a member is adopted.

c. Problems to be solved by the invention However, in the conventional manufacturing method described above,
The adhesive applied to the surface of the pad may be scattered to other parts, so the manufactured vehicle seat gets dirty,
There was a risk that the covered skin would adhere to unrelated parts. However, the covering operation of the skin needs to be performed with care, and the workability is extremely poor and requires a lot of work time, so that mass production of vehicle seats has been difficult. Further, in such a manufacturing method, it is difficult to obtain a vehicular seat having a good appearance, because the adhered skin is easily peeled off and wrinkles and deviations in the skin cannot be corrected. On the other hand, the production method using the hot-melt adhesive film has a drawback that the processing cost increases and the production cost increases because special equipment and heating energy are required.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a method of manufacturing a vehicle seat that can solve the above-described disadvantages.

d. Means for Solving the Problems In order to solve the problems of the above prior art, in the present invention, a through hole is provided in each of a pad having a recess at a substantially upper center and a seat frame holding the pad. Then, the surface covering the surface of the pad is covered from above and fixed by engaging the lower end with the seat frame. In this state, a nozzle is inserted into the through hole of the seat frame and the pad, and the adhesive is applied from the nozzle. Is sprayed between the pad and the surface of the pad, and then the surface is pressed until the surface of the pad is in close contact with the surface of the pad and adhered to the adhesive, thereby attaching the surface to the surface of the pad.

e. Embodiment Hereinafter, the present invention will be described in detail based on the illustrated embodiment.

1 to 4 show an embodiment of a method for manufacturing a vehicle seat according to the present invention. In the drawings, reference numeral 1 denotes a vehicle seat on which an occupant sits, and the vehicle seat 1 is mounted on a vehicle body. The seat cushion unit 2 includes a seat cushion unit 2 and a seat back unit (not shown) which is connected to a rear end of the seat cushion unit 2 via a reclining mechanism. The seat cushion portion 2 is formed in an inverse shape in which the upper surface is substantially concave at the center, and covers a seat frame 3 forming the same, a pad 4 serving as a cushioning material fixedly supported on the upper portion of the seat frame 3, and a surface of the pad 4. Each has a skin 5.

The seat frame 3 has a dish shape with a concave upper portion, and a concave portion 6 is formed at a substantially central portion of the upper surface of the pad 4. In addition, through holes 7, 8 are provided at substantially corresponding centers of the seat frame 3 and the pad 4, respectively, and the through holes 7, 8 are large enough to receive a nozzle 10 for ejecting the adhesive 9. Is formed. The adhesive 9 is sent from the adhesive supply device to the nozzle 10 by compressed air or the like sent from a compressor (not shown). The space formed by the pad 4 and the skin 5 has a high airtightness, and the nozzle 10
When the adhesive 9 cannot be sufficiently sprayed from above, an air vent (not shown) for an air vent may be provided in the pad 4 or the skin 5. The through holes 7, 8 and the air holes can also be used as a supply port of dry air for promoting the drying of the adhesive 9 sprayed.

On the other hand, a plurality of engaging pieces 11 formed by cutting and raising the seat frame 3 are provided on the lower surface of the seat frame 3, and these engaging pieces 9 interact with the hog ring 12 attached to the lower end of the skin 5. It is configured to engage with. In FIG. 3, reference numeral 13 denotes a pressing plate for pressing the skin 5, and the pressing surface of the pressing plate 13 is formed in an inverse shape corresponding to the upper surface of the pad 4.

The method for manufacturing the vehicle seat 1 is as follows.
First, the pad 4 is placed and fixed on the upper part of the seat frame 3 with the concave portion 6 being arranged on the upper side. Next, the skin 5 is fixed to the seat frame 3 by covering the skin 5 from above and engaging the hog rings 12 at the lower end with the corresponding engagement pieces 11 respectively. If there is no wrinkle or the like on the fixed outer skin 5 (if necessary, re-covering), insert the tip of the nozzle 10 into the through holes 8 and 7 of the seat frame 3 and the pad 4 and project from the upper surface of the pad 4 Then, it is arranged in a state where it can be ejected (see FIG. 2).

In such a state, a predetermined amount of the adhesive 9 is pressure-fed from a supply device (not shown) to the nozzle 10 and sprayed from the tip of the nozzle 10 to be sprayed between the pad 4 and the skin 5. 4 and dried. After a while, the nozzle
10 is taken out of the through holes 7 and 8, and as shown in FIG.
When the skin 5 is pressed until it comes into close contact with the surface of the pad 4 by 3, the skin 5 adheres to the adhesive 9 with this, and is attached to the surface of the pad 4 via the adhesive 9. The vehicle seat 1 is obtained (see FIG. 4). The through holes 7 and 8 serve as air vent holes for discharging air between the pad 4 and the skin 5 when the skin 5 is pressed by the pressing plate 13.

In the manufacturing method of the above embodiment, the skin 5 is fixed to the seat frame 3 before bonding to the surface of the pad 4, and in this state, the adhesive 9 is sprayed from the nozzle 10 between the pad 4 and the skin 5 to spray. After that, the outer skin 5 is pressed by the pressure plate 13 and adhered to the adhesive 9 to be attached to the surface of the pad 4, so that the adhesive 9 does not scatter to other unrelated parts. , Manufactured vehicle seat 1
Are covered with the outer skin 5 which is fixed in a correct position and has no troubles such as wrinkles. Further, the work of fixing the skin 5 to the seat frame 3 is easy, and when the skin 5 is pressurized, the air between the pad 4 and the skin 5 is discharged to the outside through the through holes 7 and 8. Covering work can be performed easily and quickly.

As described above, one embodiment of the present invention has been described. However, the present invention is not limited to the above-described embodiment, and various modifications and changes can be made based on the technical idea of the present invention.

For example, in the above-described embodiment, the seat cushion 2 of the vehicle seat 1 is manufactured, but it goes without saying that the manufacturing method of the present invention can be applied to an inverse-shaped seat back.

f. Effects of the Invention As described above, the method for manufacturing a vehicle seat according to the present invention covers the surface covering the surface of the pad from above and fixes the lower end to the seat frame. The pad was sprayed between the epidermis by spraying the adhesive from the inserted nozzle, and then the epidermis was pressurized and adhered to the adhesive so that the pad was attached to the surface of the pad, so that the covering was properly performed. It is possible to adhere the epidermis after confirming whether or not the adhesive is present, and the adhesive is not scattered to other unrelated parts. Therefore,
The vehicle seat manufactured by the manufacturing method of the present invention has a good appearance because the surface of the pad is fixed to a correct position and is covered with a skin that is free from wrinkles and other defects. Is high.

Further, the manufacturing method of the present invention is characterized in that, when the adhesive is not applied to the surface of the pad, the skin is fixed to the seat frame, and when the skin is pressed, the air between the pad and the skin is formed through the through-hole. Since more is discharged, workability is improved, work time can be significantly reduced, and vehicle seats can be efficiently mass-produced at low cost.

[Brief description of the drawings]

1 to 4 show an embodiment of a method for manufacturing a vehicle seat according to the present invention. FIG. 1 is a side view of an inverse-shaped vehicle seat, and FIG. 2 is a lower end of a skin. FIG. 3 is a cross-sectional view of a seat frame and a pad in a state where a portion is fixed and a nozzle is inserted into a through-hole, FIG. 3 is a cross-sectional view of a skin pressed by a pressing plate, and FIG. FIG. 2 is a cross-sectional view of the completed vehicle seat. DESCRIPTION OF SYMBOLS 1 ... Vehicle seat, 2 ... Seat cushion part, 3 ... Seat frame, 4 ... Pad, 5 ... Skin, 6 ... Recess, 7,8 ...
Through-hole, 9 ... adhesive, 10 ... nozzle, 11 ... engaging piece, 12 ... hog ring, 13 ... pressure plate.

Claims (1)

(57) [Claims] A through hole is provided in a pad having a concave portion substantially at the center of the upper surface and a seat frame holding the pad, and a skin covering the surface of the pad is covered from above, and a lower end portion is connected to the seat frame. In this state, a nozzle is inserted into the through holes of the seat frame and the pad, and an adhesive is sprayed from the nozzle to spray the pad between the pad and the skin. A method for manufacturing a vehicle seat, characterized in that the seat is attached to the surface of the pad by applying pressure to the surface of the pad until the surface is in close contact with the surface of the pad.