JP4330033B1 - Sewing needle - Google Patents

Abstract

To provide a sewing needle that can easily pass a thread, hardly damage a thread or a cloth, and prevent the thread that has passed through from coming out.
A gentle raised portion 3 is provided on one side 1a near the needle head, and a threading slit 2 that opens in the side 1a on the needle head side of the raised portion 3 and extends in the direction of the needle head is formed. Both sides of the opening of the slit 2 are smoothly chamfered, and thread detent protrusions 5 that are inclined so that the tip faces the back end are alternately provided on both sides near the back end of the threading slit 2.
[Selection] Figure 1

Description

  The present invention relates to a sewing needle that can be easily threaded.

A typical sewing needle has a needle hole for threading through the head of the needle body, and thread is passed through the tip of this small needle hole. It was very difficult to do threading.
2. Description of the Related Art Conventionally, an instrument for easily passing a thread through a sewing needle is known. For example, Patent Document 1 has an insertion portion that can be inserted into the eye of the sewing needle and an elastically deformable loop-shaped thread holding portion, and the insertion portion is previously passed through the eye hole, A threading device is described in which the thread is passed through the thread, and then pulled out from the eye hole while deforming the thread holding portion, and the thread is passed through the eye hole.
However, it is troublesome to use an instrument different from the sewing needle in this way, and if the needle hole is too small, it is difficult to pass the instrument.

In addition, a sewing needle in which a needle hole that allows easy threading is formed has been proposed as a device that does not require threading.
In Patent Document 2, an oblique cut is provided on the side surface of the needle hole, a depression for guiding the thread to the cut is provided on the upper part of the needle hole, and the thread is slid into the needle hole from the side through the cut line. The sewing needle that has been used is described.
However, this sewing needle is interrupted by a thin rocking piece between the recess and the needle hole, and a cut is formed at the tip of the rocking piece. If the piece breaks, the thread passed through the needle hole will easily escape. In addition, there was a concern that if the cloth bites into the cut, the swing piece may be damaged.

Patent Document 3 describes a sewing needle in which needle holes and notches are provided on both left and right sides, and a thread can be easily inserted from both sides.
Although the above-mentioned sewing needle has both sides of the notch facing inward, the tip of the notch is pointed, so that it is easy to damage the bite cloth. Further, since only a small notch serving as a thread insertion opening is formed on the side surface, it is difficult to find the position of the notch by groping.

JP 2000-237484 A Registered Utility Model No. 3108663 JP 2005-125033 A

  The problem to be solved by the present invention is that the thread can be easily passed by simply sliding the thread along the needle toward the head of the needle, and the thread and cloth are not easily damaged. It is to provide a sewing needle to prevent.

The sewing needle of the present invention forms a gentle raised portion on one side surface near the needle head, and has a threading slit that opens in the one side surface adjacent to the needle head side of the raised portion and extends in the needle head direction. The threading slit is formed so that both sides of the opening part of the threading slit are smoothly chamfered, and a thread detent protrusion is provided in the threading slit so as to be inclined so that the tip is directed to the back end part.
The thread detent protrusions may be alternately provided on both sides near the back end of the threading slit.
The back end of the threading slit may be recessed in a V shape.
The threading slit may be formed to meander toward the left and right sides of the threading slit, and a portion closer to one side across the meandering portion may become thicker toward the needle tip direction.

According to the first aspect of the present invention, the thread can be slid along the side surface of the sewing needle toward the needle head and passed through the threading slit, so that even an elderly person or a blind person can easily search by hand. You can thread.
Also, a gentle raised part is provided on one side, and a threading slit is opened on the needle head side of this raised part, so that the thread can easily slide along the side, and the position of the opening of the threading slit is Easy to understand. Moreover, since the thread slip can be stopped once at the raised portion, the thread can be prevented from passing through the opening of the threading slit.
Furthermore, since both sides of the opening part of the threading slit are rounded, the thread can be smoothly guided into the threading slit, and there is no fear that the thread or the cloth is caught by the opening part of the threading slit and damaged. Further, since the yarn detent projection is provided, the yarn that has entered the depth of the threading slit is prevented from coming out of the opening.

According to the second aspect of the present invention, it is possible to reliably prevent the thread from coming out by forming a complicated labyrinth near the back end of the threading slit.
According to the invention which concerns on Claim 3, the accommodation of a thread | yarn becomes good and it is hard to move.
According to the invention which concerns on Claim 4, in the case of a return needle | hook etc., it can prevent that the part between a threading slit and one side surface bites into cloth.

FIG. 1 shows a first embodiment of the present invention.
The sewing needle 1 of the present invention is slightly thin, and is formed by forming a threading slit 2 near the needle head.
A gentle raised portion 3 is formed on one side 1a near the needle head of the sewing needle 1, and the other side 1b is formed flat like a normal sewing needle.
The threading slit 2 allows the thread to pass smoothly, but has a width that does not have a significant adverse effect on the strength of the sewing needle 1, and is adjacent to the needle head side of the raised portion 3. It opens to one side 1a and extends in the needle head direction.

Both sides of the opening portion of the threading slit 2 are smoothly chamfered guide surfaces 4.
Further, on both sides of the threading slit 2 near the back end, thread detent protrusions 5 that are inclined so that their tips are directed toward the back end are alternately projected, and on the base back end side of each thread detent protrusion 5. A pocket-shaped cavity 6 is formed. The outer periphery of the thread detent protrusion 5 is a smooth curve so that the thread is not caught.
Further, the back end of the threading slit 2 is recessed in a substantially V shape so that the thread passing through is better accommodated.

In order to pass the thread through the sewing needle 1, the thread is slid along one side surface 1a, and the thread is pushed from the opening of the threading slit 2 to the back end. At this time, since the raised portion 3 is formed on one side 1a of the sewing needle 1, it is easy to notice the position of the opening of the threading slit 2 even by hand search, and the thread is guided to the guide surface 4 and smoothly threaded. Enter the slit 2.
Further, since the back end of the threading slit 2 is recessed in a V shape, the thread that has entered is not only difficult to be stably stored and moved in the recessed portion, but also when returning to the opening, It does not get out of the opening due to being interrupted by the stop projection 5 and entering the cavity 6.

FIG. 2 shows a second embodiment of the present invention.
The sewing needle 1 of the present embodiment is thicker than that of the first embodiment, and the meandering portion 7 curved in a substantially S shape is formed by meandering the opening portion of the threading slit 2 to the left and right sides. As a result, the portion closer to the one side surface 1a across the meandering portion 7 becomes thicker toward the needle tip direction.
For this reason, a portion between the threading slit 2 and the one side surface 1a has a chamfered tip shape, and this portion can be prevented from biting into the cloth.
Since other configurations and methods of use are the same as those in the first embodiment, the same portions are denoted by the same reference numerals, and detailed description thereof is omitted.

1 is a front view of a sewing needle showing Example 1. FIG. The front view of the sewing needle which shows Example 2. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sewing needle 1a One side 1b Other side 2 Threading slit 3 Raised part 4 Guide surface 5 Thread return protrusion 6 Cavity 7 Meandering part

Claims (4)

A gentle raised portion is provided on one side near the needle head, and a threading slit that opens in the one side surface adjacent to the needle head side of the raised portion and extends in the direction of the needle head is formed. A sewing needle characterized in that both sides of the opening are smoothly chamfered, and thread detent protrusions that are inclined so that the tip faces the back end are projected into the threading slit.   The sewing needle according to claim 1, wherein the thread detent protrusions are alternately provided on both sides of the threading slit near the back end.   The sewing needle according to claim 1 or 2, wherein a back end of the threading slit is recessed in a V shape.   The portion close to the opening of the threading slit is meandered to the left and right sides, and the portion near the one side is formed so as to become thicker toward the needle tip direction across the meandering portion. The described sewing needle.

Images