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Sewing machine

A sewing machine and needle technology, applied in the field of sewing machines, can solve the problems of good operability

Inactive Publication Date: 2004-03-03
AISIN SEIKI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, according to the technology of the above-mentioned Japanese Patent Application Laid-Open No. 4-64386, it is necessary to simultaneously operate the operation lever and hold the thread with fingers during the threading operation.
For this reason, when threading, the user needs to operate with both hands at the same time, so it cannot be said that its operability is good.

Method used

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Examples

Experimental program
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Embodiment Construction

[0026] According to the sewing machine of the present invention, at least one of the following solutions can be adopted.

[0027] A threading lever that holds a threading hook rotatably provided on the needle bar arm may be provided, and the thread guide is rotated in a direction opposite to that of the threading hook in conjunction with the threading lever as the threading lever rotates. scheme of the gear mechanism. At this time, it is possible to insert the hook of the threading hook into the eye of the machine needle by rotating the threading lever around its axis in accordance with the operation of the operating lever, so that the threading hook and the thread guide rotate in opposite directions to each other. scheme. The rotation of the threading hook body and the rotation of the thread guide body can be synchronized. It is possible to employ a speed-increasing mechanism that makes the rotation speed of the thread guide that holds the thread in the horizontal direction...

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Abstract

Provided is a sewing machine with a threading device having good operability without simultaneous operation of both hands of a user for threading. This threading device includes: a needle bar thread hanging part 6 for hanging a thread of the needle bar; a thread holding part 25 for holding a thread part 24c of a thread 24; a thread guide body 14 for holding the thread 24 hung on the needle bar thread hanging part 6 and held on the thread holding part 25 in the horizontal direction with rotation; a threading hook body 13 rotatably provided and having a hook part inserted in an eye of a needle 7; a cam part 21 for automatically releasing pressing and holding of the thread holding part 25 to the thread part 24c when the hook part of the threading hook body 13 is on standby or rotated in the reverse direction; and an operating lever part 8B for interlocking rotation of the thread guide body 14, rotation of a mediating gear 16, reverse rotation of the threading hook body 13 and the operation of the cam part 21.

Description

technical field [0001] The present invention relates to a sewing machine with a threading device for automatically threading a thread into the eye of a machine needle. Background technique [0002] When tailoring, the more troublesome work is to thread the thread into the eye of the needle. For this reason, a sewing machine including a needle bar for mounting a needle base of a machine needle having an eye and a threading device for threading a thread into the eye of the needle has conventionally been proposed (JP-A-4-64386). The threading device of the above-mentioned publication has an operating lever portion arranged to be raised and lowered, a support body that moves up and down between a retracted position and a threading position according to the operation of the operating lever portion, and a needle that is inserted into the eye of the machine needle as the support body rotates. The hook part and the guide piece that supplement the thread part in the middle between t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B87/02
Inventor 吉田宪司
Owner AISIN SEIKI KK
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