KR20080004446U - Apparatus for needle stalk safety guider of buoyancy - Google Patents

Abstract

The present invention relates to a needle bar safety guider device of a sewing machine.

The present invention provides a sewing needle for supplying the upper thread through the vertical reciprocating motion, a kiln providing the lower thread by interaction with the sewing needle, and a fabric pressing member for guiding the sewing material between the sewing needle and the sewing material. A sewing machine comprising: a receiving member attached to the cloth pressing member; An inner guider member detachable from the receiving member; An elastic member installed between the inner guider member and the head of the sewing machine; And an outer guider member in which the inner guider member and the elastic member are accommodated.

According to the above design, since the inner guider member is easily detached from the accommodating member, the replacement operation is facilitated due to the breakage of the sewing needle, the sewing workability is improved, and the broken sewing needle is ejected during the sewing operation by the accommodating member. It has an effect of preventing the injury of the finger stuck by the sewing needle during the operation by the operator.

Sewing machine, needle bar, sewing needle, storage member, guider member

Description

Needle bar safety guider device of sewing machine {Apparatus for needle stalk safety guider of buoyancy}

1 is a side view showing a needle bar guider installation structure of a conventional sewing machine

Figure 2 is a perspective view showing the assembly state of the needle bar safety guider device of the sewing machine according to an embodiment of the present invention

3 is an exploded perspective view of the needle bar safety guider device shown in FIG.

Figures 4a and 4b is a partial cross-sectional view showing the state of use of the locking (locking) and unlocking device in the needle bar safety guider device according to the present invention

<Explanation of symbols for main parts of drawing>

10 head 12 needle bar

14: sewing needle 16: upper thread

18: cloth pressing member 20: storage member

30: inner guider member 32: upper thread groove

40: elastic member 50: outer guider member

60: hinge hole 66: spring

The present invention relates to a sewing machine, and more particularly to a needle bar safety guider device of the sewing machine.

A general sewing machine includes a sewing needle for supplying the upper thread while reciprocating up and down, a kiln providing the lower thread by interaction with the sewing needle, and a fabric pressing member (aka, presser foot) for guiding the sewing material during sewing. ), The cloth pressing member includes a rectangular through hole through which the sewing needle passes through the sewing material.

The sewing operation is fixed to the fabric pressing member, the sewing needle passes through the sewing material and supplies the upper thread while moving up and down, while the kiln providing the sewing needle and the lower thread interact with each other. While the sewing operation is in progress, the worker should supply the sewing work under the fabric pressing member according to the sewing speed while fixing the sewing shape by hand with respect to the sewing work. In this case, the worker is stuck the finger by the sewing needle. Occurs.

This phenomenon is because the sewing needle is exposed to the outside while the sewing needle is reciprocating up and down through the cloth pressing member through-hole, and thus, while the sewing needle is exposed up and down, When a finger is placed in the through hole of the cloth pressing member, a phenomenon occurs in which the needle is injured by the sewing needle.

On the other hand, in order to solve the above problems, Figure 1 is a part of the needle bar 2 installed in the lower portion of the head 1, the guider 6 of the form surrounding the sewing needle 3, a plurality of connecting members (7) It is shown that the support 4 and the cloth pressing member 5 are installed through. The sewing machine having the guider 6 can prevent a safety accident in which the worker is stuck by the sewing needle 3 by mistake during the sewing operation, but the guide 6 is installed by fixing means such as the bolt 8. Therefore, if you want to replace it by the breakage of the sewing needle (3), the need to tighten the bolt (8) again after replacing the sewing needle (3) by canceling the fastening state of the bolt (8) have.

In addition, the sewing needle (3) damaged during the sewing operation is bounced out through the lower portion of the guider (6) there was a problem that injured by stabbing the hand of the worker.

The present invention has been made in view of the above problems of the prior art, an object of the present invention is to provide a needle bar safety guider device of the sewing machine easy to replace the sewing needle.

Another object of the present invention is to provide a needle bar safety guider device of the sewing machine that can prevent the safety accident of the operator due to the broken sewing needle during the sewing operation.

An object of the present invention described above is a sewing needle for supplying the upper thread through a vertical reciprocating motion, a kiln providing the lower thread by interaction with the sewing needle, and gripping the sewing material between the sewing needle and the sewing material. A sewing machine comprising a cloth pressing member, comprising: a receiving member attached to the cloth pressing member; An inner guider member detachable from the receiving member; An elastic member installed between the inner guider member and the head of the sewing machine; And it is achieved by the needle bar safety guider device of the sewing machine comprising an inner guider member and an outer guider member which is accommodated elastic member.

Preferably in the present invention, the inner guider member is formed with an upper thread groove in which the upper thread is guided along the longitudinal direction of one side of the outer circumferential surface, and a recess is formed at the lower side of the outer peripheral surface.

In the present invention, the inner circumferential surface of the outer guider member is coupled to the protrusion formed on the outer circumferential surface of the inner guider member.

In addition, the elastic member in this invention is characterized in that the coil spring.

Furthermore, the present invention further includes a locking and unlocking device unit installed in the housing member and the outer guider member to selectively lock and release the inner guider member.

Hereinafter, the needle bar safety guider device of the sewing machine according to the present invention by the accompanying drawings in detail as follows.

Figure 2 is a perspective view showing the assembly state of the needle bar safety guider device of the sewing machine according to an embodiment of the present invention, Figure 3 is an exploded perspective view of the needle bar safety guider device shown in Figure 2, in Figure 3 The provided hinge hole is rotated 180 degrees and is attached to the processing portions of the storage member and the outer guider member described later.

2 and 3, the needle bar safety guider device according to the present invention includes a housing member largely attached to a cloth pressing member, an inner guider member detachable from the housing member, and between the inner guider member and the head of the sewing machine. It includes an elastic member provided, and an outer guider member for receiving the inner guider member and the elastic member.

The housing member 20 is a hollow pipe shape, the bottom surface is fixedly attached to the upper surface of the cloth pressing member 18, the locking and unlocking (to be described later to one side of the outer peripheral surface of the housing member 20 ( unlocking) The device unit D is installed.

The inner guider member 30 has a cylindrical shape in which an upper surface center portion and a bottom surface are opened, and an elliptic upper thread groove 32 for guiding the upper thread 16 along one longitudinal direction of the outer circumferential surface thereof is formed, so that the upper thread 16 is Passed through the upper thread groove 32 is fitted to the needle ear of the sewing needle 14, the groove portion 34 is formed on the lower side of the outer peripheral surface of the inner guider member (30).

At this time, the inner guider member 30 is made of a transparent (透明) material so that it is easy to check whether the damage to the needle bar 12 from the outside, it is preferable to have a diameter smaller than the diameter of the receiving member (20). .

The inner guider member 30 is fitted to the inner circumferential surface of the accommodating member 20 through an outer circumferential surface thereof, and the inner guider member 30 is pulled upward to be detachable to the accommodating member 20 as necessary.

The elastic member 40 formed of a coil spring has an upper end fixedly installed at a lower portion of the head 10 of the sewing machine, and a lower end fixedly installed at an upper end of the inner guider member 30. In accordance with the detachment of the (30) maintains the inner guider member 30 is suspended to the elastic member (40).

The outer guider member 50 is a transparent material in the form of a hollow pipe having a diameter larger than the diameter of the inner guider member 30, the communication groove 52 communicating with the upper thread groove 32 along one longitudinal direction of the outer circumferential surface thereof. ) Is formed, and the above-described locking and unlocking device unit D is installed at one end of the outer circumferential surface.

Figures 4a and 4b is a partial cross-sectional view showing a state of use of the locking (locking) and unlocking (unlocking) device in the needle bar safety guider device according to the present invention, the locking and unlocking device unit according to the present invention (D ) Are respectively installed on the housing member 20 and the outer guider member 50, and will be described with reference to the housing member 20 for convenience.

4A and 4B, a rectangular machining portion 22 is formed on one side of the outer circumferential surface of the housing member 20, and screw holes 24 and 26 are respectively formed on the upper and lower ends of the machining portion 22. Is formed, the spring coupling piece 28 having a '-' shaped cross section on one side of the processing portion 22 is formed to protrude. The spring engagement piece 28 is formed radially at intervals of about 90 °.

In addition, the screw hole 24 in the processing unit 22 formed in the receiving member 20 through the hinge 68, the hinge hole 60, the left and right wing 61, 62 is protruded on the outer circumferential surface A hinge coupled to 26, a semicircular protrusion 64 protrudes from a rear surface of the left wing 61, and a spring coupling piece 28 of the accommodation member 20 formed on the front surface of the right wing 62. One end of the spring 66 is fitted to the spring engaging piece 62a having the same number and shape as the other, and the other end of the spring 66 is fitted to the spring engaging piece 28 so that the spring 66 can stretch and contract. do.

Meanwhile, as shown in FIG. 3, a protrusion 36 having a semicircle shape is formed along one outer length of the outer circumferential surface of the inner guider member 30, and along one inner length of the inner circumferential surface of the outer guider member 50. The groove portion 54 into which the protrusion 36 is inserted is formed, and thus the left and right flows of the inner guider member 30 are prevented while the inner guider member 30 slides on the inner circumferential surface of the outer guider member 50. You can prevent it.

Hereinafter, the operation of the present invention having the configuration as described above.

As shown in FIG. 2, the sewing material (not shown) is fixed to the fabric pressing member 18, and the upper thread 16 is the upper thread groove while the sewing needle 14 moves vertically through the sewing material. 32 is connected to the sewing needle 14 and supplied, and the sewing needle 14 and the kiln providing the lower thread interact with each other to proceed with the sewing operation. In this case, the elastic member 40 includes the head 10 ) And the inner guider member 30 as a predetermined length.

During the above operation, the operator may recognize whether the sewing needle 14 is damaged through the inner and outer guider members 30 and 50 having the transparent material. On the other hand, if the sewing needle 14 is broken during the sewing operation as described above to replace it, as shown in Figure 4a, 4b, the spring 66 is compressed by pressing the right wing 62 forward. While the left wing 61 of the opposite side is pushed backward, the projection 64 inserted in the groove 34 of the inner guider member 30 is pushed backward and at the same time the inner guider member 30 Is separated from the accommodating member 20, wherein the inner guider member 30 maintains a predetermined distance from the accommodating member 20 by a restoring force of the elastic member 40. Replace the sewing needle 14 with a new one.

On the other hand, to fix the inner guider member 30 to the outer guider member 50 as necessary, as described above, by pressing the right wing 62 forward, the projection 64 is retracted backward. After the recess 34 of the inner guider member 30 is positioned behind the processing unit 22 in a state of being released, if the worker releases his or her hand while pressing the right wing 62, the restoring force of the spring 66 is reduced. As the left wing 61 moves forward, the protrusion 64 is inserted into the groove 34 of the inner guider member 30, and the inner guider member 30 is supported by the outer guider member 50.

That is, according to the present invention, the inner guider member 30 can be selectively locked or released to the housing member 20 or the outer guider member 50 as necessary, and after replacing the sewing needle 14 The inner guider member 30 is coupled to the locking and unlocking device unit D of the accommodation member 20 to perform a sewing operation.

In the above process, since the inner guider member 30 is detachably coupled to and separated from the receiving member 20, the detachable operation of the inner guider member 30 is easily performed, and the upper thread groove 32 and communication therewith. It is easy to fit the upper thread 16 to the sewing needle 14 through the communication groove 52.

In addition, since the receiving member 20 is installed between the inner guider member 30 and the cloth pressing member 18, it is possible to prevent the sewing needle 14, which is damaged during the sewing operation, from being thrown out and causing injury to the worker in advance. It becomes possible.

Although the needle bar safety guider device of the sewing machine according to the present invention has been described with reference to the illustrated drawings, the present invention is not limited by the embodiments and the drawings disclosed herein and by those skilled in the art within the technical scope of the present invention. Of course, various modifications may be made.

As described above, according to the present invention, the inner guider member is easily detached from the accommodating member, thereby facilitating the replacement operation due to the damage of the sewing needle, and improving the sewing workability.

In addition, it is possible to prevent the sewing needle that is broken during the sewing operation by the housing member to bounce off, and prevent the worker from being injured by the sewing needle during the operation.

Claims (5)

It comprises a sewing needle for supplying the upper thread through the vertical reciprocating motion, a kiln providing the lower thread by interaction with the sewing needle, and a fabric pressing member for guiding the sewing material between the sewing needle and the sewing material. In the sewing machine, An accommodating member attached to the cloth pressing member; An inner guider member detachable from the receiving member; An elastic member installed between the inner guider member and the head of the sewing machine; And Needle bar safety guider device of the sewing machine comprising an inner guider member and an outer guider member for receiving the elastic member. The method of claim 1, The inner guider member is a needle bar safety guider device of the sewing machine, characterized in that the upper thread groove is formed to guide the upper thread in one longitudinal direction of the outer circumferential surface, the groove is formed on one side of the lower peripheral surface. The method of claim 1, The needle guide safety guide device of the sewing machine, characterized in that the inner circumferential surface of the outer guider member, the groove formed in the slide is coupled with the protrusion formed on the outer circumferential surface of the inner guider member. The method of claim 1, Needle bar safety guider device of the sewing machine, characterized in that the elastic member is a coil spring. The method of claim 1, And a locking and unlocking device unit installed at the receiving member and the outer guider member to selectively lock or unlock the inner guider member.

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