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Sewing machine needle

A sewing machine needle and needle eye technology, which is applied in the directions of machine needles, sewing machine components, sewing equipment, etc., to prevent and promote untwisting, reduce extrusion force, and enhance the effect of untwisting prevention.

Active Publication Date: 2013-08-21
ORGAN NEEDLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventionally, there are currently no sewing machine needles that prevent untwisting of the needle thread itself

Method used

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  • Sewing machine needle
  • Sewing machine needle
  • Sewing machine needle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0025] exist Figure 2 to Figure 4 An embodiment of a sewing machine needle according to the invention is shown in .

[0026] exist figure 2 Among them, the sewing machine needle includes a needle bar 1 which is the base body of the sewing machine needle and has a needle point 5 formed at its distal end so as to meet the needle shaft centerline Z-Z, and a needle eye 3 is formed above the needle point 5 at a predetermined distance from the needle point. 5, the needle eye 3 passes from the front side of the needle bar 1 to the rear side. Also, on the front side of the needle shank 1, a long groove 2 for guiding the needle thread to the eye of the needle 3 is formed up to the eye of the needle 3 in the longitudinal direction of the needle shank 1, the long groove 2 having a rectangular cross section. On the rear side of the needle bar 1 (the side opposite ...

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PUM

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Abstract

The present invention provides a sewing machine needle capable of preventing needle thread (T) untwisting during sewing. The sewing machine needle (T) includes a needle bar (1), wherein, the needle bar (1) has a needlepoint (5), a needle hole (3) formed nearby the needlepoint (5) and a long groove (2), the needlepoint (5) is formed at the far-end of the needle bar in order to meet with the needleaxis central line, the long groove (2) is located at the front side of the needle bar (1), and extending from the upside of the needle bar (1) to the needle hole (3). Part of the needle hole (3) close to the front connected to the long groove (2)of the needle hole (3) slopes an angle (alpha) from the needle axis central line (Z-Z) which is roughly equal to the twist direction (m) tilt angle (theta) of the needle thread (T), to provide for a sloping portion (4), so that the main portion of a long groove(2) extending parallel to the needle axis central line (Z-Z) is in mutual connection to the needle hole (3) through a tilt part (4).

Description

technical field [0001] The present invention relates to a sewing machine needle capable of preventing untwisting of needle thread during sewing. Background technique [0002] One of the problems in sewing is the needle thread problem where the needle thread is cut or fluffed. This needle thread problem is known to occur when there is a high sliding resistance between the needle thread and the fabric, the needle thread and the needle, or the needle thread and the sewing machine thread path. In addition, when stitches are formed by a sewing machine, the occurrence of untwisting (non-twisting or twisting movement) of the needle thread due to the positional relationship between the needle point and the needle thread extending from the previous stitch is one of the main causes of the above-mentioned problems. one. When the untwisting of the needle thread occurs, the thread is easily separated, and there arises a problem that the rotating hook cannot catch the needle thread smoo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D05B85/00D05B51/00
CPCD05B85/02D05B35/00D05B35/02
Inventor 松田俊彦
Owner ORGAN NEEDLE CO LTD