JP3146250B2 - Decorative wrinkle forming method for trim cover - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile seat (seat).
The present invention relates to a method for forming decorative wrinkles on a trim cover constituting the surface of the above.

[0002]

2. Description of the Related Art As shown in FIG. 9, there is a conventional automobile seat in which a trim cover forming a seating portion of the seat is formed with decorative wrinkles using leather on the body. In the figure, (SB) indicates a seat back, and (SC) indicates a seat cushion. The body (10) of the seat back (SB) and the seat cushion (SC) is obtained by sewing leather pieces (10A), (10B), and (10C) cut into a plurality (three pieces) along the joints thereof. And decorative wrinkles ...
After forming (b), the leather pieces (10A) are joined together, and after this joining, the hanging of the body (10) is suspended along the joining point on the back side of the body (10). An embedded material (not shown) is integrally sewn.

[0003]

The above-mentioned leather pieces (10)
A) (10B) and (10C) are sewn with a sewing machine. If the sewn with the sewing machine is described using a leather piece (10B) as an example, the terminal side is sewn in the direction of the arrow. Since this stitching is performed while pressing the leather pieces (10A)..., The wrinkles (a) and (b) are formed so as to face the feed direction of the sewing machine. Therefore, each leather piece (10
A)... The decorative wrinkles (a) and (b) formed on one side edge and the other side edge have opposite directions. Therefore, since the directions of the right and left wrinkles (a) and (b) at the joining portions of the leather pieces (10A) are reversed, the appearance of the trim cover is impaired. In view of the above, an object of the present invention is to improve the appearance quality of a trim cover in which a decorative wrinkle is formed by a sewing machine as in the related art.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a sewing method in which a single piece of skin material is sewn from one end to the other end by a sewing machine, and the left and right sides of the sewn place are sewn. Form decorative wrinkles on the surface side of the skin material along
On the back side of the skin material at the gathering point, the gathering point is pinched in a direction orthogonal to the gathering direction, and a hanging material is integrally sewn along the knob portion.

[0005]

The decorative wrinkles formed by the sewing of the skin material have deeper wrinkles formed by the knobs at the closing stitches, and the deep wrinkles are kept constant by the sewing of the hanging material.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 4 show a first embodiment of the present invention, and FIGS. 1 and 2 show decorative wrinkles (a) formed by sewing on a trim cover which is a skin material (1).
..., (b) ... The skin material (1) uses leather and leather made of synthetic resin. As shown in FIG. 1, in order to facilitate sewing with the sewing machine (in the processing of the sewing thread), the approach sewing by the sewing machine is performed along the left and right side edges of the skin material (1) and two places in the center or in reverse order. Is performed while feeding the skin material (1).
In the figure, (11A), (11B), (11C), and (11D) indicate sewing threads.

[0007] The sewn-on sewing with this sewing machine is performed using a skin material (1).
Is moved in the feed direction of the sewing machine, and the wrinkles (a), (b),... Is located rearward with respect to the feed direction of the sewing machine. In the figure (1A)
(1B) shows a sewn place of the skin material (1). Therefore, the wrinkles (a) and (a) formed along the sewing threads (11A) and (11C) are formed in the same direction, and the sewing thread (1) is formed.
1B) The wrinkles (b) formed along (11D) are formed in the opposite direction to the wrinkles (a) and (a), and are formed on the left and right sides of the sewing threads (11B) and (11C). The wrinkles are
Formed in the same direction.

FIGS. 3 and 4 show the back side of the seam (1A) (1A) (1B) (1B) of the skin material (1) perpendicular to the sewing thread (11A)... The hanging material (2) is integrally sewn along the knob (1C)... With a sewing thread (12). In this way, the pinch portions (1A) (1B)... Are pinched to increase the depth of each wrinkle (a) (b). In the figure (1
1) and (11) show a frame joined to the skin material (1).

The above-mentioned hanging material (2) is formed into a bag shape by folding a band-shaped cloth in the width direction and sewing both free ends thereof to the skin material (1) with sewing threads (12). , A core wire (wire) (21) is inserted through the core wire (21).
At the same time, the hanging material (2) is inserted into a groove or a slit provided on the surface of a foam pad (not shown) which is covered with the skin material (1), and is inserted into an insert wire in the pad and a support member for supporting the pad. The skin material (1) is suspended by binding the tip.

Thus, the sewing thread (1) at the center of the skin material (1)
1B) On both left and right sides of (11C), decorative wrinkles (a) and (b) formed in the same direction are embodied. And
These wrinkles (a) and (b) become deep and excellent in design by sewing the knob and the hanging material together.

FIG. 5 to FIG. 8 show a second embodiment of the present invention. In this embodiment, a foam material having the same size as the skin material (1) is provided on the back side of the skin material (1). A slab material of urethane foam) wadding (3) is added, and together with the wadding (3), seams are stitched in the same manner as in the first embodiment to form decorative wrinkles (a) (b). A method in which the back side of the gathering point (1A ')... Is gripped in a direction orthogonal to the gathering direction, and the hanging material (2) is integrally sewn to the gripping point (1C'). Show.

FIG. 5 shows a state before the stitching is performed.
As the skin material (1), a single piece of leather or the like having a body size is used in the same manner as in the above-described embodiment, and concave grooves (31) and (32) are formed at the place where the wadding (3) is stitched together. I have.

FIGS. 6 and 7 show a state in which the skin material (1) is sewn together with the wadding (3) in the same manner as in the above embodiment. By sewn together with the wadding (3) in this manner, deeper decorative wrinkles (a) and (b) can be obtained. In the figure, (1A ') and (1B') indicate the place of the stitching.

FIG. 8 shows that, after the above-described stitching, the back side of the stitching portions (1A ') and (1B') is gripped in the same manner as in the above embodiment, and the knob portion (1C ') is hung by the hanging material (2).
And a state sewn together. 5 to 8, the same reference numerals as those in FIGS. 1 to 4 denote the same members, and a description thereof will be omitted.

When the decorative wrinkles (a) and (b) are formed on the trim cover together with the wadding (3) on the skin material (1), the trim cover itself has a soft feeling in addition to the effect of the above-described embodiment. Is generated, and wrinkles (a) and (b) having a polish feeling are obtained.

[0016]

According to the first aspect of the present invention, it is not necessary to join a plurality of pieces to form a skin material as in the above-described conventional product, so that not only the number of sewing steps can be reduced, but also the place where the seam is stitched is obtained. Wrinkles that occur on the left and right are formed in the same direction,
In addition, since the left and right wrinkles can be formed substantially uniformly, a trim cover having excellent appearance can be provided. In addition, since the sewn portion is pinched in the direction orthogonal to the sewn direction and the hanging material is integrally sewn along the sewn portion, deep wrinkles can be formed on both sides of the surface of the sewn portion, and this deep The wrinkles are kept constant by sewing the hanging material. According to the second aspect of the present invention, all the decorative wrinkles formed by parallel stitching provided side by side on a single skin material can be oriented in the same direction, and the appearance quality of the skin material can be improved.

[Brief description of the drawings]

FIG. 1 is a plan view of a first embodiment of the present invention, showing a state in which sewing is performed on a skin material.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a sectional view of a trim cover formed according to the first embodiment of the present invention.

FIG. 4 is an enlarged view of a portion A in FIG. 3;

FIG. 5 is a cross-sectional view showing a second embodiment of the present invention, in a state before the close stitching.

FIG. 6 is a plan view of the second embodiment of the present invention in a state of a closed stitch.

FIG. 7 is a sectional view taken along the line VII-VII in FIG. 6;

FIG. 8 is a partially enlarged sectional view of a trim cover according to a second embodiment of the present invention.

FIG. 9 is a perspective view showing a conventional automobile seat.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Skin material 2 Suspended material 3 Wading 1A Pull stitch location 1B Pull stitch location 1C Knob location

Claims (2)

(57) [Claims] 1. A single-piece skin material is sewn from one end to the other end by a sewing machine so as to form decorative wrinkles on the front side of the skin material along the left and right sides of the sewn portion. ,next,
A decorative wrinkle forming method for a trim cover, comprising: gripping a stitching portion in a direction orthogonal to the direction of the stitching on the back side of the skin material at the stitching portion, and integrally sewing a hanging material along the knob portion. 2. The trim cover according to claim 1, wherein a plurality of sewn places are provided in parallel on the one-piece skin material, and the direction of feed of the sewing machine at the adjacent sewn places is opposite. Decorative wrinkle forming method.