JP2001198374A - Sewing equipment for trim cover of car seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attach a fixing member of a trim cover that fixes integrally the trim cover at a requested position with a simple equipment. SOLUTION: Instead of the current pressing metal of a sewing machine, a core member (2) is attached with an upper thread (1) by sewing with a sewing machine in a zigzag manner the core member (2) supplied by a guide tube (52) with the upper thread (1), using a pressing metal (5) composed of a pressing plate (50) with a sewing machine needle insertion hole (56) having an hole laterally longer than in feed direction of the trim cover and the guide tube (52) that passes through the center of insertion hole of a sewing machine needle (56).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a trim cover sewing apparatus for a vehicle seat.

[0002]

2. Description of the Related Art A vehicle seat is formed by supporting a cushion made of foam on a frame and covering the cushion with a trim cover.

After the trim cover is covered with the cushion body, a part of the trim cover is suspended from the cushion body or sewn in a bag shape so as to be in close contact with the outer shape of the cushion body. By closing or narrowing the opening, it is fixed to the cushion body.

[0006] Overlock sewing is performed at the end of the trim cover sewn in the above-mentioned bag shape, a tension thread is inserted along the end of the opening, and the tension is pulled to narrow the opening. In the case where the portion is fixed to the cushion body side (for example, U.S. Pat. No. 4,732,097), it is not necessary to bind the terminal of the opening to the frame supporting the cushion body with a number of hog rings, so that the terminal treatment of the opening is simplified In addition, there is an advantage that it can be easily performed.

[0005]

The trim cover in which the tension thread is slidably inserted through the end of the trim cover and slidably inserted therein has a problem that a large number of accessories must be attached to a conventional sewing machine.

Further, there is a defect that cannot be provided at the hanging point or the like other than the terminal of the trim cover, for example, at the center of the trim cover.

Accordingly, the present invention provides a sewing machine in which a fixing member for fixing a trim cover to a cushion body, a frame, or the like can be provided at a desired position on the trim cover, and simple accessories are attached to a conventional sewing machine. An object of the present invention is to provide a sewing device capable of sewing.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a vehicle in which an upper thread is stitched in a staggered manner so as to straddle a long core material provided at an appropriate position of a trim cover. A trim cover sewing device for a sheet for use, wherein the presser foot of the trim cover includes a presser plate having a sewing machine needle insertion port having a long hole extending in the left-right direction with respect to a feed direction of the trim cover, and A guide tube fixed in the front-rear direction and penetrating through the center in the left-right direction of the sewing machine needle insertion port and penetrating the core material therein.

The above-mentioned core material is a suspension member for suspending the trim cover on, for example, the uneven upper surface of the cushion body, or a tension member for narrowing the opening of the trim cover sewn in a bag shape. The trim cover having the tension member can be easily and easily stitched by replacing the conventional presser foot.

A slide plate made of synthetic resin is provided on the bottom surface of the holding plate, and a cutout is provided in front of the guide tube in the slide plate, and the core is pressed by the holding plate from the cutout. Since the trim cover can be smoothly fed by being placed on the trim cover, the core material is fed following the feed of the trim cover.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show a presser foot (5) attached to a presser core instead of the presser foot of the conventional sewing machine.
The holding plate (50) is provided with a sewing needle insertion port (56) having a long hole extending in the left-right direction with respect to the feed direction of the trim cover (3) shown in FIG. A sliding plate (51) made of a synthetic resin is attached to improve the sliding property of (1).

A guide tube (52) is fixed on the holding plate (50) at the center of the sewing machine needle insertion port (56) in the feed direction of the sewing machine.

A notch (55) is formed in the center of the rear side of the sliding plate (51), and a guide is provided such that one end opening of the guide tube (52) faces the notch (55). A pipe (52) is provided, and a core material (2) to be described later is inserted through the guide pipe (52) and supplied onto a trim cover (3) fed by a feed dog while being pressed by a holding plate (50). You.

In the drawing, (53) is a lever (5) shown in FIG.
A fixing piece screwed to the presser core (5A) of the sewing machine which moves up and down by the operation of B), (53A) is a screw insertion hole,
(54) indicates a mounting piece for attaching the holding plate (54) to the fixing piece (53). The feed dog (not shown) has the same width as the left and right width of the holding plate (50).

FIG. 3 shows a sewing state of the sewing machine. The sewing machine needle insertion holes (56) (5) provided in the presser plate (50) are shown.
The sewing needle (6) slides to the left and right of 6) and sew in a staggered manner as shown in the figure with the upper thread (1).

Then, the sewing machine is sewn while inserting the core material (2) supplied from the guide tube (52) into each of the upper threads (1). The upper thread (1) is looped on the trim cover (3) so that the core material (2) inserted therein can be slid in the length direction without being tightened by the upper thread (1). The sewing machine is sewn in a staggered manner with room, but the lower thread (not shown) entangled with this upper thread (1)
Sewn without slack.

In FIG. 3, (M) shows a drive section of the sewing machine, (T) shows a table board of the sewing machine, and (30) shows a terminal section of the trim cover (3).

FIG. 4 shows a state in which the end portion (30) of the bottom cloth (3) of the trim cover is sewn using the presser foot (5), and the upper thread (1) is stitched in a staggered manner. The core material (2) is inserted by the upper threads (1) without falling off.

The upper thread (1) is a transparent nylon thread having a count of about 20 and preferably has a pitch of about 3 mm and a swing width of about 6 mm.

As shown in FIGS. 5 and 6, the core material (2) is used inside the end portion (30) of the opening formed in the bottom cloth (3) of the trim cover (A) sewn in a bag shape. What you do
For use as a tension member, a thread or a string made of a synthetic resin (for example, polyethylene) having a diameter of about 2 mm and having flexibility and sliding properties is selected and used.

As shown in FIGS. 7 to 9, when the core member (20) is used as a suspension member for the trim cover (A), a rigid synthetic resin wire or a metal wire having rigidity is used. It is preferred to use.

FIGS. 5 and 6 show a trim cover (A) in which a core material (2) is sewn in a bag shape and provided along an end portion (30) of an opening in a bottom cloth (3). When both ends of the material (2) are pulled and joined together, as shown in FIG. 6, the end portion (30) is squeezed to narrow the opening, and the trim cover (A) is fixed to the cushion body (B) side. Is done.

The above-mentioned core material (2) is provided with the upper thread (1) on the inner surface side of the trim cover (A) using the presser foot (5).

In FIGS. 5 and 6, (C) is a spring member that supports the cushion body (B) by being stretched around a frame (not shown), and (21) and (21) are spring materials of the cushion body (B). The hanging groove provided on the left and right of the recess on the upper surface is shown.

By using the sewing device shown in FIGS. 1 to 3, as shown in FIGS. 7 to 9, the upper thread (1) is located on the left and right inside the body portion (4) of the trim cover (A).
The core material (20) attached according to (0) can be provided. Then, the core material (20) is inserted into the suspension groove (21) of the cushion body (B), and is bonded to the insert wire (22) in the cushion body (B) by a hog ring (23). The body part (4) of the trim cover (A) can be stuck to the upper surface of the cushion body (B) without wrinkles or blemishes.

In FIG. 8, (4A) indicates a recess formed by sewing, (41) indicates a skin of the body (4), (42) indicates the wadding, and (43) indicates a wading cover.

[0027]

According to the present invention, by replacing the presser foot of the conventional sewing machine, a core material for fixing the trim cover to the cushion body or the like can be attached by the sewing machine.

Further, the core material can be attached to desired positions on the front and back of the trim cover. Therefore, the fixing portion of the trim cover can be freely set, so that the degree of freedom is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a presser foot constituting a device of the present invention.

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

FIG. 3 is a perspective view showing a use state.

FIG. 4 is a partially enlarged perspective view of a trim cover sewn by the sewing machine according to the present invention.

FIG. 5 is a partially cutaway perspective view of a trim cover in which a core material is attached as a tension member by sewing with the device of the present invention, and a cushion body covered by the trim cover.

6 is a perspective view of the vehicle seat formed by the trim cover shown in FIG. 5 as viewed from the bottom.

FIG. 7 is a partially cutaway perspective view of a trim cover in which a core material is attached as a hanging member by sewing with the device of the present invention.

8 is a sectional view taken along line VIII-VIII in FIG. 7;

FIG. 9 is a partial sectional view showing a suspended state of the trim cover shown in FIG. 7;

[Explanation of symbols]

 A Trim cover 1 Needle thread 2 Core material 5 Presser foot 50 Presser plate 51 Sliding plate 52 Guide tube 56 Sewing machine needle insertion port

Claims (2)

[Claims] 1. A trim cover sewing apparatus for a vehicle seat, which stitches a stitch-like upper thread so as to straddle a long core material provided at an appropriate position of a trim cover, wherein the trim cover is held down. The holding plate is provided with a sewing machine needle insertion port having a long hole extending in the left-right direction with respect to the feed direction of the trim cover, and is fixed to the holding plate in the front-rear direction. And a guide tube that penetrates through the center in the direction of the core and into which the core material is inserted. 2. A sliding plate made of a synthetic resin is provided on the bottom surface of the holding plate, and a cutout is provided in front of the guide tube in the sliding plate, and the core is pressed by the holding plate from the cutout. The apparatus for sewing a trim cover of a vehicle seat according to claim 1, which is mounted on a trim cover.