JPH0647424Y2 - Sewing machine cloth holding device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a cloth holding device for holding a sewing material such as cloth in a sewing machine or the like.

[Prior art]

When sewing a cloth using a sewing machine or the like, it is necessary to hold the cloth to be sewn so as not to cause a cloth shift or a cloth wrinkle.

For this reason, a device for gripping the cloth is used, and various cloth gripping devices corresponding to various sewn products are prepared.

FIG. 3 is a view showing a cloth holding device used for fastener sewing as one of such cloth holding devices.

In the figure, A is a fastener sewing cassette as a cloth holding device, and this cassette A has a fastener F at the center.
A lower frame 2 having a hole for exposing the upper frame 3, an upper frame 3 having the same shape as that of the lower frame 2, and an opening / closing shaft 4 for pivotally supporting one end of the both for opening and closing the both, and an upper frame 3 It is composed of a pressing pin 5 for maintaining the closed state of the lower frame body 2.

Then, in order to use the cloth holding device A, a front cloth 1b as a sewn product and a back cloth 1a provided with a fastener F in advance.
And are superposed at a predetermined position, and the cloth is held between the cloth and the cloth to be fixed as shown in FIG.

In this way, the sewn product fixed at the predetermined position is sewn by a sewing machine or the like.

By the way, in such a cloth gripping device, it is necessary to properly fix the cloth so that the cloth does not become misaligned or wrinkle as a sewn product. In the illustrated fastener sewing cassette A, the locking tool is provided on the upper surface of the lower frame body 2.

Conventionally, elastic materials such as a file and a sponge are known as such a locking tool.In the case of a paper file, a cloth is locked by friction with a cloth surface, and a sponge body is used when it is pressed. The cloth is locked by elastic force.

[Problems to be solved by the device]

However, the above conventional technique has the following problems.

That is, the paper file as a locking tool of the cloth gripping device is difficult to align when setting the cloth due to being caught by friction with the cloth, which lowers work efficiency, and when the paper file is wrinkled, The surface locks the cloth with the cloth wrinkles, which causes a shift in the stitch position on the cloth, which deteriorates the quality of the sewn product.

On the other hand, in the case of an elastic body such as a sponge, when the cloth largely swings during sewing, the elastic body changes its shape and swings accordingly, and the function as a locking tool is impaired.

[Means for Solving the Problems]

According to this invention, the above-mentioned locking tool of a cloth holding device including an upper plate and a lower plate which can be brought into contact with and separated from each other and a locking tool provided on at least one inner surface of these is pressed against a locking body. Along with the elastic body, the locking body is composed of a plate body and a plurality of locking needles arranged at appropriate intervals on the plate body, and the elastic body has the locking needles. A through hole to be engaged is provided, and the elastic body is composed of an elastic plate and a smooth body provided on the upper surface. Alternatively, the smooth body is formed as a separate body from the elastic plate, and when the upper plate and the lower plate are closed and pressed, the locking needle of the locking body protrudes from the through hole of the elastic body due to contraction of the elastic body. In order to solve the above-mentioned conventional problems by engaging with cloth.

[Action]

In the cloth holding device according to the present invention, when the upper plate and the lower plate are closed and pressed, the elastic body contracts, and a plurality of locking needles mounted on the plate body protrude from the through hole of the elastic body, The locking needle engages with the cloth located on the upper surface of the locking tool to properly fix the cloth to the locking tool.

[Example of device]

 An embodiment of the present invention will be described with reference to the drawings.

The same parts as those in the conventional example are designated by the same reference numerals, and a duplicate description will be omitted.

1 and 2 are views showing an embodiment of the present invention.

FIG. 1 is an exploded perspective view of a locking tool of a cloth holding device according to the present invention. In FIG. 1, 6 is a locking body.
Is composed of a plate body 6b made of a metal or a resin material, and a plurality of barb-like locking needles 6a vertically arranged at appropriate intervals on the upper surface of the plate body 6b.

Reference numeral 7 is an elastic body, and this elastic body 7 has a through hole 7c that engages with the locking needle 6a of the locking body 6, and the locking needle 6a is normally placed in this through hole 7c. Is stored. The elastic body 7 is an elastic plate 7a made of an elastic material that is easily contracted by a pressing pressure such as a sponge, and a smooth body 7b provided above the elastic plate 7a and having a smooth surface on which the cloth can slide smoothly.
It consists of

The locking device configured as described above is installed on at least one inner surface of the lower and upper plates of the cloth holding device with an adhesive or the like.

Next, the operation of the cloth holding device will be described with reference to FIG.

FIG. 2 is a cross-sectional view showing the operation of the fastener sewing cassette A as the cloth holding device.

In the figure, 3 is an upper frame as an upper plate, and 2 is a lower frame as a lower plate.

FIG. 1A is a diagram showing the position of the cloth 1 when the cloth 1 is aligned. Since the cloth 1 can be slid smoothly by the smooth body 7b on the upper surface of the locking tool, the cloth 1 can be easily aligned. The wrinkles formed on the cloth 1 are naturally flat on the upper surface of the smooth body 7b.

After aligning the cloth 1 with the cassette A for fastener sewing,
As shown in FIG. 3B, when the upper frame 3 is closed on the lower frame 2 and the cloth 1 is held by the fastener sewing cassette A, the elastic body 7 of the locking tool is contracted by the pressing pressure.

Due to the contraction of the elastic body 7, the locking needle 6a of the locking body 6 stored in the through hole 7c of the elastic body 7 projects from the through hole 7c.

Then, the locking needle 6a pierces the cloth 1 located on the upper surface of the locking tool, whereby the cloth 1 is fastened to the fastener sewing cassette A.
Properly fixed to.

The cloth holding device having the above-described configuration and operation is as described above.
It is needless to say that the present invention can be applied not only to the cloth holding device for fastener sewing but also to the cloth holding device for other sewing such as pockets and buttons.

Further, in the above-described embodiment, the case where the smooth body and the elastic plate are separately configured has been described, but it goes without saying that these may be integrally formed.

[Effect of device]

As described above, according to the present invention, the cloth locking device in the cloth holding device is provided with the locking body having the locking needle and the elastic body having the smooth body on the surface mounted on the upper surface of the locking body. Configure
When the upper plate and the lower plate are closed and pressed, the elastic needle contracts so that the locking needle protrudes from the surface of the elastic member through the through hole and engages with the cloth. ,
The pressing can be performed quickly, easily, and accurately, and the sewing efficiency can be improved and the quality of the sewn product is also improved.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing the construction of an embodiment of the present invention, and FIG. 2 is a view showing the operation of a fastener sewing cassette, and FIG. 1 (a) is a vertical cross section showing the position alignment of cloth. FIG. 3B is a longitudinal sectional view showing the cloth being held, FIG. 3 is a diagram showing a fastener sewing cassette and a sewn product by the cassette, and FIG. FIG. 3B is a partially cutaway perspective view showing the configuration of the cassette and the sewn product, and FIG. 7B is a partially cutaway perspective view showing the sewn product fixed by the fastener sewing cassette. In the figure, 2 ... lower plate 3 ... upper plate 6 ... locking body 6a ... locking needle 6b ... plate body 7 ... elastic body 7a ... elastic plate 7b ... smooth body 7c ... through hole

Claims (2)

[Scope of utility model registration request] 1. An upper plate and a lower plate which can be brought into contact with and separated from each other, and a locking tool provided on at least one of inner surfaces thereof, the locking tool being a locking body, and a locking body on the locking body. The elastic body is formed of a plate body and a plurality of locking needles arranged at appropriate intervals on the plate body. A through hole that engages with the locking needle is provided, and this elastic plate and the smooth body provided on this upper surface are configured to lock due to contraction of the elastic body when the upper plate and the lower plate are pressed together. The locking needle of the body projects from the through hole of the elastic body,
A cloth holding device for a sewing machine, which is adapted to engage with cloth. 2. The cloth holding device for a sewing machine according to claim 1, wherein the smooth body is formed separately from the elastic plate.