JPH04364883A - Seat cover groove bonding method and mold pad structure - Google Patents

Abstract

PURPOSE:To enable a seat cover sewed part to surely adhere to a deep groove formed in a mold pad. CONSTITUTION:A slide receiving piece 29 having a press piece 30 directed toward a deep groove 26 in a mold pad 23 is embedded on the lower surface 28 side corresponding to the deep groove. A lower mold is provided with a projecting stripe on which a seat cover sewed part 14a and the deep groove 26 of the mold pad 23 can be inserted in parallel, while an upper mold is provided with a slide plate 43 capable of exposing and concealing opposite a ridge 38 of the lower mold. The mold pad 23 is compressed by lowering the upper mold and the slide receiving piece 29 is directed toward the deep groove 26 and elastically deformed by lowering the slide plate 43 so that the deep groove 26 can adhere to the sewed part 14a.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for bonding a seat cover to a groove formed in a mold pad of a vehicle seat, for example, and a mold pad structure.

0002

2. Description of the Related Art Conventionally, a seat cushion 2 of this type, for example, a vehicle seat, is composed of a molded pad 3 and a seat cover 8 that encloses the molded pad 3. This molded pad 3 has a central main pad portion 4. A side pad portion 5 is formed in a raised shape on the left and right sides of the main pad portion 4, and a deep groove portion 6 is recessed between the main pad portion 4 and the side pad portion 5. A recess 7 for attaching a seat frame 17 is formed in the seat.

[0003] The seat cover 8 also includes a main piece 11 cut into a predetermined shape from a skin material made by laminating and molding a skin material 9 made of fabric or a synthetic resin sheet, etc. and a cover pad 10 made of a urethane slab, and a main piece 11 and left and right frame pieces. 12 and side pieces 13 are sewn together 14a and 14b.Before wrapping the seat cover 8 on the mold pad 3, an adhesive 15 is applied to the surface and deep groove portion 6 of the mold pad 3. After that, the seat cover 8 is wrapped, and during this wrapping, the sewn portion 14 of the seat cover 8 is wrapped.
a is inserted into the deep groove portion 6 and bonded, and a decorative groove 16 is formed on the surface side.

0004

[Problems to be Solved by the Invention] However, in the seat cushion 2 formed in this manner, when an occupant gets on and off, weight is applied to the side pad portion 5, so the side pad portion 5 is elastically deformed and forms a deep groove. Since the portion 6 deforms into an expanded shape and is acted on to pull the seat cover 8 in the direction of the arrow shown in the figure, for example, even if the adhesive 15 is applied to the deep groove portion 6, the sewn portion 14a remains in the deep groove. Part 6
If the sewn part 14a is not fully inserted, the tip of the sewn part 14a and the groove bottom 6
If the adhesion to a is not sufficient, the adhesion will peel off and the decorative grooves 16 will meander, blister, etc., resulting in loss of linear uniformity.

The present invention has been made to solve the above-mentioned conventional problems, and provides an adhesion method and a mold pad structure for reliably adhering the sewn portion of a seat cover to a deep groove formed in a mold pad. The purpose is to

[0006]

[Means for Solving the Problems] In order to solve the above-mentioned technical problems, the present invention has raised side pad portions on the left and right sides of the main pad portion, and deep groove portions are recessed in the partitioned portions of both pad portions. A seat cover is made by sewing a mold pad, a main piece cut into a predetermined shape, a frame piece, and a side piece to enclose the mold pad, by applying adhesive to the surface and deep grooves of the mold pad. In the method of pressure bonding using a pressure bonding mold consisting of a lower mold and an upper mold, a slide receiving piece having a pressing piece directed toward the deep groove is embedded in the lower surface side of the mold pad corresponding to the deep groove. , the lower mold is provided with a protruding strip to allow attachment and insertion of the sewn portion of the seat cover and the deep groove of the mold pad, and the upper mold is provided with a protruding strip that is connected to the protruding strip of the lower mold. A slide plate is provided opposite to the slide plate so as to be retractable, and as the upper mold descends, the mold pad is clamped, and as the slide plate descends, the slide receiving piece is elastically displaced toward the deep groove side, thereby forming the deep groove. This is a method for bonding a seat cover groove part and a sewn part.Furthermore, the molded pad structure of the seat to be sewn with the seat cover is such that side pad parts are formed in raised shapes on the left and right sides of the main pad part. A deep groove is recessed in the partitioned portions of both pad portions, and a substantially T-shaped cross section is formed on the corresponding lower surface side of the deep groove by a pressing piece oriented toward the deep groove and a receiving portion having a receiving recess. The molded pad structure includes a shaped slide receiving piece with its receiving portion buried in substantially the same manner as the lower surface.

[0007]

[Operation] With the above structure, the mold pad is directed toward the deep groove through the slide plate and is locally elastically deformed, thereby reliably adhering the sewn portion of the seat cover to the deep groove.

[0008]

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings. As in the conventional case, the seat cover 8 is made of a skin material formed by laminating a skin 9 and a cover pad 10 made of a urethane slab into a predetermined shape. Cut main piece 1
1, left and right frame pieces 12 and side pieces 13 are sewn 14
a, 14b and are sewn into a predetermined shape.

In addition, the molded pad 23 has a main pad part 24 in the center and raised side pad parts 25 on the left and right sides of the main pad part 24, as in the conventional case.
A deep groove portion 26 is formed between the side pad portion 25 and the side pad portion 25, and a recess portion 27 for attaching the seat frame 17 is formed on the lower surface side of the side pad portion 25. Further, a deep groove portion 2 is provided on the lower surface 28 of this mold pad 23.
6, a slide receiving piece 29 is integrally disposed in a buried manner.

The slide receiving piece 29 is made of synthetic resin or the like, and has a length approximately corresponding to the deep groove portion 26, and has a cross-sectional shape in which the pressing piece 30 and the receiving piece 31 are formed into a substantially T-shape. A surface 31a of this receiving piece 31 is buried substantially flush with the lower surface 28, and a receiving recess 31b is formed in the same surface 31a along its longitudinal direction.

Next, the pressure bonding mold 33 for pressure bonding the seat cover 8 molded as described above and the mold pad 23 will be explained. This adhesive lower mold 34 has a molding surface 35 on which the seat cover 8 is attached.
The molding surface 35 has a main pressure surface 36 that follows the main pad portion 24 of the mold pad 23, and side pressure surfaces 37 that follow the raised surfaces of the side pads 25 of the mold pad 23 on the left and right sides thereof. Projecting strips 38 having a predetermined length are provided on the partitions 36 and 37 so as to be insertable into the deep grooves 26 recessed in the mold pad 23 along the longitudinal direction thereof. The adhesive lower mold 34 formed in this manner is set on the base.

The upper adhesive mold 39 is disposed opposite the lower adhesive mold 34 and is moved up and down by a drive device (not shown). A pressing surface 41 to follow is formed, and recesses 27 are formed in the mold pad 23 on both sides thereof.
A protruding portion 42 is provided so as to protrude so that it can be inserted into. Further, on the left and right sides of this pressing surface 41, there are slide receiving pieces 2 adjacent to the protruding stripes 42 and corresponding to the protruding stripes 38 of the lower adhesive mold 34.
A slide plate 43 for pressing the adhesive mold 9 is provided so as to be vertically retractable, and the slide plate 43 is connected to an operating mechanism linked to the drive mechanism of the adhesive upper mold 39, and is normally inserted into the upper mold 39. When the mold 39 descends to a predetermined position and presses the mold pad 23, it is configured to slide down in conjunction with this.

Pressure bonding mold 33 thus formed
In order to adhesively mold the mold pad 23 and the seat cover 8, first, the seat cover 8 is set on the molding surface 35 of the lower adhesive mold 34. In this case, the sewn portion 14a that becomes the decorative groove 16 is attached to the convex strip portion 38, and the main piece 11 and the stile piece 12 are attached to the main pressure surface 36 and the side pressure surface 37 in close contact with each other. Then, adhesive 15 is applied to the main pad part 24, side pad part 25, and deep groove part 26 of the mold pad 23, and the deep groove part 26 is attached to the convex strip part 38 of the lower mold 34 in the inverted state as shown in the figure. Place it in a crown shape on the sewn portion 14a. In this state, the convex strip 38 of the lower mold 34, the slide receiving piece 29 of the mold pad 23, and the slide plate 43 of the upper mold 39 are provided on the same line.

With the seat cover 8 and mold pad 23 set in this manner, the adhesive upper mold 39 is lowered. As the upper mold 39 descends, the protrusions 42 formed on the left and right sides of the pressing surface 41 are inserted into the recesses 27 formed in the mold pad 23, and as the upper mold 39 descends further, the pressing surface 41 becomes the lower surface of the mold pad 23. 28 and presses the mold pad 23 with a predetermined pressure. The upper mold 39 is stopped while the mold pad 23 is pressurized with this predetermined pressure, and the slide plate 43 is lowered with a predetermined stroke along with this stop.

By lowering the slide plate 43,
Press the slide receiving piece 29 located directly below it. Due to this pressing force, the slide receiving piece 29 elastically deforms the mold pad 23 and is linearly displaced toward the protruding strip 38 of the lower mold 34, and due to this displacement, the deep groove 26 of the mold pad 23 is moved toward the protruding strip 38. The distal end of the sewn portion 14a is moved slightly along the wrapped seat cover (sewn portion 14a), and the tip side of the sewn portion 14a becomes crushed as shown in the figure and comes into contact with the bottom portion 26a of the deep groove portion 26. The seat cover 10 is fully inserted into a predetermined range from the sewn portion 14a. By heating and cooling in this state, the seat cover 10 and the mold pad 23 are bonded together with the adhesive 15.

By moving the adhesive upper mold 39 upward, the slide plate 43 is also recessed into the upper mold 39, thereby making it possible to take out the mold pad 23 to which the seat cover 10 is adhered. Thereafter, the mold pad 23 and the seat cover 10 are sequentially bonded together by the above-described procedure.

As described above, the present invention is not limited to simply pressing the mold pad with the upper mold as in the conventional method, but presses the mold pad 23 with the adhesive upper mold 39 and simultaneously presses the mold pad 23 with the lowering of the slide plate 43 to create a slide receiver. The bottom part 26a side of the deep groove part 26 is locally elastically deformed through the piece 29, and the tip side of the sewn part 14a is crushed and brought into contact with the bottom part 26a of the deep groove part 26. Since the seat cover 10 is fully inserted into the predetermined range from the sewn portion 14a, the deep groove portion 26 and the inserted portion are sufficiently bonded, and the deep groove portion 26 floats.
It is possible to eliminate poor adhesion and form a uniform decorative groove 16, and since the slide receiving piece 29 is embedded in the lower surface 28 of the mold pad 23,
The sitting comfort of the seat cushion 2 does not give a feeling of discomfort.

[0018]

[Effects of the Invention] With the above configuration, the present invention has the following features:
At the same time as the mold pad is compressed by the adhesive upper mold, the bottom side of the deep groove is locally elastically deformed via the slide receiving piece by lowering the slide plate, and the tip side of the sewn portion is crushed to form the bottom of the deep groove. At the same time,
Since a predetermined range of the seat cover is fully inserted into the deep groove part from the sewn part, the deep groove part and the inserted part are sufficiently bonded to eliminate lifting in the deep groove part and poor adhesion. This makes it possible to form a uniform decorative groove, and since the slide receiving piece is embedded in the lower surface of the molded pad, there is no discomfort in sitting on the seat cushion.

[Brief explanation of drawings]

FIG. 1 is a partial sectional view of a side pad portion side of a seat cushion.

FIG. 2 is a partial cross-sectional view of the side pad portion side of the mold pad.

FIG. 3 is a cross-sectional view of a pressure-adhesive mold,

FIG. 4 is an explanatory diagram of setting the seat cover on the adhesive lower mold.

FIG. 5 is an explanatory diagram of further setting a mold pad in the state of FIG. 4;

FIG. 6 is an explanatory diagram of pressure adhesion.

7 is an enlarged cross-sectional view illustrating the pressed state of the circled portion in FIG. 6. FIG.

FIG. 8 is a partial cross-sectional view of the side pad portion side of a conventional seat cushion.

FIG. 9 is an enlarged sectional view of the deep groove portion.

[Explanation of symbols]

8 Seat cover 11 Main piece 12　Stile piece 13 Side piece 14a Sewing part 15 Adhesive 23 Mold pad 24 Main pad part 25 Side pad part 26 Deep groove part 28 Bottom surface 29 Slide receiving piece 30 Pressing piece 31 Receiving part 31b Receiving recess 33 Pressure adhesive mold 34 Adhesive lower mold 38 Convex part 39 Adhesive upper mold 43 Slide plate

Claims (2)

[Claims] Claim 1: A molded pad having raised side pads on the left and right sides of a main pad, with deep grooves recessed in the compartments of both pads, and a molded pad that is cut into a predetermined shape for wrapping. Apply adhesive to the surface and deep grooves of the mold pad, and then press the seat cover made by sewing the main piece, frame piece, and side pieces together using a pressing adhesive mold consisting of a lower mold and an upper mold. In the bonding method, a slide receiving piece having a pressing piece facing the deep groove is embedded in the lower surface side corresponding to the deep groove of the mold pad, and the lower mold is provided with a sewn portion of the seat cover and a slide receiving piece embedded therein. A protruding strip is provided to allow the deep groove of the mold pad to be attached and inserted, and a slide plate is provided on the upper mold so as to be retractable so as to face the protruding strip on the lower mold. A method for adhering a seat cover groove by pressing the mold pad as it descends, and elastically displacing the slide receiving piece toward the deep groove as the slide plate descends, thereby bonding the deep groove and the sewn part. . 2. A molded pad structure for a seat that is sewn with a seat cover, wherein side pad portions are formed in a raised shape on the left and right sides of a main pad portion, and deep groove portions are recessed in partitioned portions of both pad portions. At the same time, on the corresponding lower surface side of this deep groove part, a slide receiving piece having a substantially T-shaped cross section is buried with the receiving part substantially flush with the lower surface by a pressing piece directed toward the deep groove part and a receiving part having a receiving recess. Molded pad structure configured in a shape.