JP2000237484A - Needle threader - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a needle threader capable of easily passing a thread through a needle even in a narrow threading space such as the vicinity of a needle mounted to the lower end of a needle bar in a sewing machine. SOLUTION: This needle threader is constructed of an insertion part 3, which can be inserted into an eye 5a of a needle 5, and a thread holding part 2, which is kept in a diamond-shape in a free condition and can be easily deformed by resistance in penetration into the eye 5a. Alternatively, the needle threader is constructed of an insertion part insertable into an eye 5a of a needle 5 and a thread holding part held in a loop-shape in a free condition and easily deformable by resistance in penetration through the eye 5a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a threading device for passing a thread through an eye of a sewing machine needle or the like.

[0002]

2. Description of the Related Art As threading devices for easily passing a thread through an eye hole of a sewing needle, for example, Japanese Utility Model Publication No. 8-4948, Japanese Patent Application Laid-Open No. 10-235063, and Japanese Patent Application Laid-Open No. 10-2722.
An example is disclosed in Japanese Patent Publication No. 76-76. This threading device is configured to include a thread introduction portion at the tip of a grip portion, and the grip portion is made of, for example, an aluminum thin plate so as to be picked and held by a finger. The thread introduction portion is formed by bending a thin metal wire having a circular cross section into a substantially rhombus shape, and is set to a size that allows the bent portion at the tip end to pass through the eye hole of the sewing needle. In order to use the threading device configured as described above, first, the gripping portion is pinched with a finger to push the thread introduction portion into the eye hole of the needle, and further pushed, so that the thread introduction portion is elastically deformed and the eye introduction portion is deformed. It protrudes to the opposite side. When the yarn introduction portion protrudes to the opposite side of the eye hole, that portion elastically recovers and returns to the original shape. By retracting the threading tool after passing the thread through the threading section, the threading section is pulled out of the eye of the needle with the thread. As a result, the thread passes through the eye of the needle, and the threading is completed.

[0003]

In the threading operation performed using the above-described threading device, first, the thread introduction portion of the threading device is passed through the eye of the sewing needle, and then the thread is passed through the thread introduction portion. ,
Thereafter, an operation of pulling out the threading tool from the eye hole is required. For this reason, when the thread is passed through the sewing needle of the sewing machine, the workability of the threading is very poor due to the small working space. In particular, when the interval between adjacent sewing needles is extremely small, such as in a multi-needle sewing machine having a large number of sewing needles, there is a disadvantage that the threading device as described above cannot be used substantially.

[0004]

SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks inherent in the threading device according to the prior art, the present invention has been proposed to solve the problem, and is provided at the lower end of a needle bar of a sewing machine. It is an object of the present invention to provide a threading tool that can easily thread a sewing needle even when a working space for threading is narrow, such as around a sewing needle.

[0005]

SUMMARY OF THE INVENTION In order to overcome the above-mentioned problems and appropriately achieve the intended purpose, a threading device according to the present invention comprises an insertion portion which can be inserted into an eye of a sewing needle, and a free portion. And a thread holding portion which can be easily deformed by resistance when passing through the eye hole while maintaining a loop shape in the state.

[0006]

After the thread has been held in the thread holding section in advance, the insertion section is inserted into the eye of the sewing needle and moved to the opposite side of the eye, so that the thread holding section is moved when passing through the eye. The yarn is deformed by the resistance and passes through the eye with the yarn, so that the threading to the eye is completed.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a threading device according to the present invention. FIG. 1 is a schematic view of a threading device 1 according to a first embodiment. The threading device 1 is formed by bending a small-diameter, elastic steel wire into a required shape. In other words, the steel wire is folded back at the center to form a substantially rhombus-shaped thread holding portion 2.
Are formed, and the insertion portion 3 is formed by overlapping the folded portions in a straight line. This insertion part 3
Are joined by means such as brazing. Further, as shown in FIG. 2B, the insertion portion 3 of the threading device 1 is set to have such a thickness that it can be inserted into the eye 5a of the sewing needle 5 with a margin.

A threading operation by the threading device 1 according to this embodiment will be described with reference to FIG. As shown in FIG. 2 (a), the thread a is passed through the thread holding portion 2 having a substantially rhombic shape of the threading device 1, and then the tip of the insertion portion 3 is moved to the sewing needle 5 as shown in FIG. 2 (b). And the threading tool 1 is pushed forward. When the insertion portion 3 protrudes to the opposite side of the eye hole 5a to a certain extent, the threader 1 is pulled out to the opposite side of the sewing needle 5 as shown in FIG. That is, the yarn holding portion 2 is
a, the thread holding portion 2 is easily elastically deformed by resistance caused by rubbing against the inner periphery of the eye hole 5a, whereby the eye hole 5a is allowed to pass. Thread holding part 2 has eye holes 5
When it comes out of a, it is elastically restored as shown in FIG. With the above operation, the operation of threading the thread a into the eye 5a is completed.

In the threading device 1 according to the first embodiment, the thread a is held in the thread holding portion 2 in advance, and then the threading operation of the sewing needle 5 through the eye 5a is performed. ing. This eliminates the need for a complicated operation such as once inserting the threading tool into the eye hole 5a and setting the thread a to the threading tool on the side opposite to the eye hole as in the conventional threading tool. Therefore,
Even when the space around the sewing needle is too small, as in the case of threading through the sewing needle attached to the lower end of the needle bar of the sewing machine, the threading operation can be easily performed. Further, even when the interval between adjacent sewing needles is small, such as a multi-needle sewing machine, the threading device of the present embodiment can easily perform threading.

Next, a threading device according to a second embodiment of the present invention will be described with reference to FIGS. The threading device 10 shown in FIG. 3 is made of, for example, a small-diameter nylon thread, and is folded at a central portion to form a loop-shaped thread holding portion 20.
Are formed. The folded portions are integrally superposed to form an insertion portion 30. This insertion part 3
The overlapping portions at 0 are joined by an appropriate adhesive or the like. The insertion portion 30 of the threading tool 1 is shown in FIG.
As shown in the figure, the thickness is set so that it can be inserted into the eye a of the sewing needle 5 with a margin.

Next, a threader 10 according to a second embodiment will be described.
Will be described with reference to FIG. First, as shown in FIG.
Then, as shown in FIG. 4B, the leading end of the insertion portion 30 is inserted into the eye 5a of the sewing needle 5, and the threader 1 is inserted.
Push forward. When the insertion portion 30 projects to the opposite side of the eye hole 5a to a certain extent, the threading device 10 is pulled out from the opposite side of the sewing needle 5 as shown in FIG. That is, when the thread holding section 20 passes through the eye 5a, the thread holding section 20 is easily elastically deformed by the resistance accompanying the rubbing with the inner periphery of the eye 5a. Passing is allowed.
When the thread holding portion 20 comes out of the eye hole 5a, the thread holding portion 20 is turned off as shown in FIG.
It returns to its original shape by elastic recovery. With the above operation, the operation of threading the thread a into the eye 5a is completed.

According to the threading device 10 according to the second embodiment, the same effect as that of the threading device according to the first embodiment can be obtained, and the entire threading device can be compared with the first embodiment. There is an advantage that the threading operation can be performed more easily because of high flexibility.

[0013]

[Other Embodiments] (1) Although brazing is exemplified as the joining means of the insertion portion in the first embodiment, the present invention is not limited to this, and bonding or other joining means may be employed. (2) As the shape of the yarn holding portion according to the first embodiment, an example was given in which the yarn holding portion was substantially rhombic, but the shape is not limited to this. For example, any other shape, such as an elliptical shape, may be used as long as it can be easily elastically deformed by sliding against the inner periphery of the eye when passing through the eye of the sewing needle. (3) Nylon yarn is exemplified as the material of the second embodiment. However, if the material has a moderate elasticity and a good sliding property,
Any other material may be used. (4) Although the bonding means of the insertion portion in the second embodiment has been exemplified by bonding with an adhesive, for example, welding, taping,
Any other means such as fitting of a tube body may be adopted.

[0014]

According to the threading device of the present invention, after the thread to be passed is held in the holding portion in advance, the insertion portion is inserted into the eye of the sewing needle, and the insertion is performed from the opposite side of the eye. By pulling out the part, threading can be performed. Therefore, the threading operation can be easily performed even when the working space around the sewing needle is too small.

[Brief description of the drawings]

FIG. 1 is a front view of a threading device according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of a threading operation by the threading device according to the first embodiment.

FIG. 3 is a front view of a threading device according to a second embodiment of the present invention.

FIG. 4 is an explanatory diagram of a threading operation by a threading device according to a second embodiment.

[Explanation of symbols]

 1,10 threader 2,20 insertion section 3,30 thread holder 5 sewing needle 5a eye hole

Claims (2)

[Claims] An insertion portion which can be inserted into an eye hole (5a) of a sewing needle (5).
(3), while maintaining the rhombus in a free state, the eye hole (5
Thread holding part (2) that can be easily deformed by resistance when passing through a)
A threading tool characterized by comprising: 2. An insertion portion which can be inserted into an eye hole (5a) of a sewing needle (5).
(30) and a thread holding portion that can hold a loop in a free state and can be easily deformed by resistance when passing through the eye hole (5a).
(20) A threading tool characterized by comprising: