JP2751790B2 - Edge of skin material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bead of a skin material used for vehicle seats, furniture and other seats. More specifically, a ridge portion having a substantially semicircular cross section is formed at the center in the longitudinal direction. Further, the present invention relates to a bead of a skin material provided with a band-shaped bead body made of a synthetic resin material and formed with a seam allowance portion extending from the ridge portion.

[0002]

2. Description of the Related Art Conventionally, a skin material used for a vehicle seat, furniture and other seats is formed by sewing a terminal of each part of the skin material divided into a main part, a side part, a horizontal gusset part and the like by sewing. Is formed. At the time of this sewing, the bead is inserted into the end of each part of the skin material and sewn integrally so that the sewing portion is not exposed.

[0003] As a conventional bead of a vehicle seat and a method of manufacturing the bead, there are JP-A-58-16312 and JP-A-58-158217. The bead shown in these publications is formed of a bead core and a band-shaped bead cover covered on the outer periphery of the bead core.

As shown in FIGS. 5 and 6, a conventional bead 1 has a bead portion 3 having a substantially circular cross section at its head, and a sewing portion 5 formed below the bead portion 3. As shown in FIG. ing. The bead portion 3 and the sewn portion 5 are integrally formed in a belt shape from a thermoplastic synthetic resin.

As shown in FIGS. 6 (a) and 6 (b), a bead cover 7 is joined to the outside of the bead portion 3 and the sewn portion 5, and a squeezing surface is formed on the bead cover 7. ing. A terminal of a skin material 9 to be sewn is sewn to a sewn portion 5 of the bead 1.

[0006]

However, in these conventional ball rims 1, the ball rim portion 3 having a substantially circular cross section protrudes outward, which has limitations in terms of molding. In addition, the pulling force acts on the bead portion 3 during the getting on and off, and the bead portion 3 may be rubbed or deformed, resulting in lack of durability and deterioration in appearance.

SUMMARY OF THE INVENTION An object of the present invention is to easily and quickly sew a terminal of a skin material used for a vehicle seat, furniture and other seats using a bead, and to variously deform the shape of the bead. Can be formed, the appearance can be improved, and the size of the protruding portion of the bead portion can be formed small,
It is an object of the present invention to provide a rim of a skin material capable of preventing the rim portion from being rubbed or deformed and improving durability.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has a ridge having a substantially semicircular cross section at the center in the longitudinal direction, and has a width direction from both sides of the ridge. And a reinforcing cloth joined to the back side of the seam allowance portion of the ball body, and a ridge of the ball body. The edge of the skin material is sewn together with the reinforcing cloth to the seam allowance on both sides of the portion.

[0009]

According to the present invention, a strip-shaped bead body made of a synthetic resin material is provided with a ridge having a substantially semi-circular cross section at the center in the longitudinal direction, and a seam allowance is provided in the width direction from both sides of the ridge. The part is extended and formed, the shape embedded in the skin material can be expressed as a model shape, and the reinforcing cloth is joined to the back side of the seam allowance part of the bead body, so that the strength can be improved In addition, the sewing operation of the skin material can be performed easily and quickly, and the seam allowance can be easily curved even when a bead is arranged at the portion located at the curved portion, so that the covering operation of the skin material can be easily and quickly performed. It can be carried out.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a skin material according to the present invention; FIGS. 1 to 4 schematically show one embodiment of a bead of a skin material according to the present invention. The bead 11 of the skin material is a bead of a skin material of a vehicle seat in this embodiment. However, the present invention is not limited to this.

As shown in FIGS. 2 and 3, the bead 11 of the skin material has a band-shaped bead body 13 made of a synthetic resin material, a band-shaped cotton cloth and a metal band bonded to the back side of the bead body 13. ,
And a reinforcing cloth 15 made of non-woven fabric or the like.

The reinforcing cloth 15 can be integrally joined when the bead body 13 is extruded. When the reinforcing cloth 15 is integrally formed at the time of extrusion molding of the ball body 13, the reinforcing cloth 15 is flush with the bottom surface of the ball body 13,
The reinforcing cloth 15 may be retrofitted to the bottom surface of the bead body 13.

A ridge 17 having a substantially semicircular cross section is formed at the center of the front side of the bead body 13 in the longitudinal direction. A through-hole 17 a having a circular cross section is formed at the center of the ridge 17. The ridge 17 is not limited to the one having a substantially semi-circular cross-section, but may have a shape close to a circular arc or other various shapes. Also, ridge 17
May be omitted.

A pair of left and right seam allowances 19 are formed to extend in the width direction from both sides of the ridge 17 of the bead body 13. The pair of left and right seam allowances 19 are formed to have the same length in the width direction from both sides of the ridge 17. Note that the pair of left and right seam allowances 19 need not have the same length in the width direction from both sides of the ridge 17, and the length can be appropriately adjusted according to the material of the skin material to be sewn.

The reinforcing cloth 15 joined to the back side of the seam allowance 19 of the bead body 13 can be formed over the entire length of the seam allowance 19. The part 19 is joined to a part of the back surface side of the part 19 centered on the ridge part 17. The two reinforcing cloths 15 may be joined to the back surfaces of the left and right seam allowances 19.

As shown in FIG. 1, the length of the left and right seam allowances 19 of the bead body 13 corresponds to the length of the end portion 21a of the skin material 21, for example, 10 mm. It can be used for positioning the folded portion 21a of the skin material 21 at the time of wearing.

Further, as shown in FIG. 3 and FIG. 4, the corrugated portions 1 are provided at the ends of the left and right seam allowances 19 of the bead body 13.
9a are formed, and the waveforms of the left and right wavy portions 19a are formed so as to have opposite phases at the left and right seam allowances 19.

The waveform of the left and right wave-shaped portions 19a may be a rectangular wave or a sawtooth wave. By forming the wavy portion 19a, when the left and right seam allowances 19 are bent in the approaching direction, the bending can be easily performed, and the following ability can be improved. 19
It can be made thinner or omitted.

Next, the folded portion 2 of the end of the skin material 21
The front end of 1a is aligned with the front end of the corrugated portion 19a on the left and right, and the position close to the turning position of the turning portion 21a of the terminal of the skin material 21 is set to the seam allowance on both the left and right sides of the ridge 17 of the bead body 13. By sewn together with the reinforcing cloth 15, the end of the skin material 21 can be sewn via the bead 11.

[0020]

The above is the configuration of the embodiment of the bead of the skin material according to the present invention. According to such a configuration, the center of the band-shaped bead body made of a synthetic resin material in the longitudinal direction is formed. A ridge portion having a substantially semicircular cross section is formed on the ridge portion, and a seam allowance portion is formed to extend from both sides of the ridge portion in the width direction, so that the size of the protrusion portion of the bead portion can be reduced. , Prevents the bead from being rubbed or deformed and improves durability,
In addition, the shape of the bead can be formed by variously deforming the shape of the bead, and the appearance can be improved.

Further, since the reinforcing cloth is joined to the back side of the seam allowance of the bead body, the strength can be improved.
Furthermore, the sewing operation of the skin material can be performed easily and quickly, and the seam allowance can be easily bent even when a bead is disposed at the portion located at the curved portion, so that the coating operation of the skin material can be performed easily and quickly. It is possible to obtain a bead of a skin material that can be made.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a sewing state of a skin material using a bead according to the present invention.

FIG. 2 is a sectional view of a bead of the skin material according to the present invention.

FIG. 3 is a partial perspective view of a bead of the skin material according to the present invention.

FIG. 4 is a partial plan view of a bead of the skin material according to the present invention.

FIG. 5 is a sectional view showing a sewing state of a skin material using a conventional bead.

6A and 6B show a bead of a conventional skin material, in which FIG. 6A is a partial perspective view, and FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 11 bead 13 bead body 15 reinforcing cloth 17 ridge 19 seam allowance 19 a corrugated portion 21 skin material 21 a folded portion

Claims (1)

(57) [Claims] 1. A belt-shaped synthetic resin material having a ridge having a substantially semicircular cross section at the center in the longitudinal direction, extending in the width direction from both sides of the ridge, and forming a seam allowance. A bead body and a reinforcing cloth joined to the back side of a seam allowance of the bead body, and a terminal of a skin material is sewn together with the reinforcing cloth to a seam allowance on both sides of the ridge portion of the bead body. A bead of a skin material characterized by being made.