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Sewing machine with automatic needle threader

A sewing machine and sewing needle technology, applied in the field of sewing machines, can solve the problems of difficulty in improving the threading efficiency of sewing needles and the like

Inactive Publication Date: 2006-03-15
BROTHER KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, even when the automatic threading mechanism completes the needle threading, manual operation is still required, and the efficiency of the needle threading process is difficult to improve
[0006] The lifting device disclosed above only automatically moves the presser foot to the predetermined lifting position, and does not cooperate with the automatic threading mechanism to automatically move the presser foot

Method used

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  • Sewing machine with automatic needle threader
  • Sewing machine with automatic needle threader
  • Sewing machine with automatic needle threader

Examples

Experimental program
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Embodiment Construction

[0038] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. As shown in Figures 1-3, the sewing machine M has a sewing table 1, a column 2 located on the right side of the sewing table, a sewing arm 3 extending leftward from the upper end of the column so as to meet the sewing table 1, and a Sewing head 4 on the left side of sewing arm 3. There is a needle plate 1a on the sewing table 1, and a rotating hook member (not shown) is located under the needle plate 1a in the middle of the sewing table 1 part. A bobbin wound with a bottom line is detachably connected to a liquid crystal display 5 on the front surface of the column 2 for rotation. On the front surface of slightly lower sewing arm 3, there are sewing start switch 21, sewing end switch 22, automatic thread preparation switch 23, presser foot moving switch 24 and automatic threading start switch 25 (corresponding to threading operation unit).

[0039] An opena...

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PUM

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Abstract

A sewing machine includes a needle bar (11) holding a sewing needle (19) having an eye hole (19a), a needle threading mechanism (17) including a threading hook (74) passing a needle thread (10) through the eye hole (19a) of the sewing needle, a presser bar (12) with a presser foot (20) attached to its lower end, a vertically moving mechanism (80) vertically moving the presser bar (12), a drive mechanism (83) driving the vertically moving mechanism (80), a threading operation unit (25) operating the needle threading mechanism (17), and a drive mechanism controlling unit (C) controlling the drive mechanism (83) vertically moving the presser bar (12) to a position where interference between the presser foot (20) and threading hook (74) is avoided when the needle threading operation unit (25) unit is operated.

Description

technical field [0001] The invention relates to a sewing machine which has a sewing needle threading mechanism capable of automatically passing the sewing thread through the eyelet of the sewing needle. Background technique [0002] A conventional sewing machine has many threading parts (thread tension adjuster, thread take-up spring, thread take-up lever, needle bar thread guide, etc.) through which the upper thread from the bobbin passes. After passing through these threading parts in a predetermined order and path, the upper thread passes through the eyelet of a sewing needle connected to the needle bar. Some conventional sewing machines also have automatic needle threaders, which have a suture grip and a threading element to hold the end of the upper thread so as to automatically thread the upper thread through the eye of the needle. In the above-mentioned sewing machine, when the thread holder holding the upper thread moves the upper thread to a turning position near t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B29/02D05B87/02D05B69/00D05B19/12
CPCD05B69/00D05B87/02D05B19/12
Inventor 藤原慎也水野昇庄子善久
Owner BROTHER KOGYO KK
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