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Threading device of sewing machine

A technology of threading device and sewing machine, which is applied in the direction of threading device, sewing machine components, sewing equipment, etc., and can solve the problems of cumbersome, hook positioning, etc.

Active Publication Date: 2011-11-09
积家国际株式会社
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the above-mentioned conventional threading device, if the hook cannot be positioned at the same level as the thread hole of the needle, it is necessary to adjust the engagement position of the support shaft and the restricting member inside the sewing machine arm.
At this time, the sewing machine arm must be opened, which will be a very tedious job

Method used

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  • Threading device of sewing machine
  • Threading device of sewing machine
  • Threading device of sewing machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Next, an embodiment example of the threading device according to the present invention will be described.

[0024] Figure 1 to Figure 8 Among them, the needle bar arm 10 is swingably mounted on a bracket 14 via a pin 16 , and the bracket 14 is fixed to a predetermined position of the sewing machine arm 12 . As is well known, the swinging of the needle bar arm 10 is swinging in the left and right directions when viewed from an operator positioned in front of the sewing machine arm 12 .

[0025] The needle bar arm 10 holds the needle bar 20 at portions 10A and 10B separated by a predetermined distance in the vertical direction, and the needle bar 20 is movable in the vertical direction. A needle bar holder 22 is fixed to the needle bar 20, and the needle bar holder 22 is connected to a crank mechanism (not shown). A needle 26 detachably attached via a needle holder 24 is attached to the front end portion of the needle bar 20 . Threading hook 64 ( Figure 9 ) is inser...

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PUM

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Abstract

The invention provides a threading device of a sewing machine, which can easily location the hook part to the same level height of the needle line hole. The threading body is installed on the support shaft and can move along the direction of the shaft, whose force application direction is downwards under the function of a spring. The lower end of the threading body is interlocked with the head ofthe bolt component. The external thread part of the bolt component is tighten by the internal thread part of the downward opening of the support shaft and can move along the direction of the shaft. Therefore, the level height of the threading body can be adjusted by adjusting the screw depth, and the guide part of the hook part can be easily locationed to the same level height of the needle line hole at the external side of the sewing machine arm.

Description

technical field [0001] The invention relates to a threading device of a sewing machine. Background technique [0002] As shown in Patent Document 1, there is provided a conventional "when the knob is pressed down and the hook at the front end of the support shaft is positioned at the same level as the thread hole of the needle, the knob is horizontally moved in one direction A threading device for a sewing machine that uses a swing operation to hang the needle thread on the hook to thread the needle. [0003] However, in this threading device, the hook is positioned at the same level as the thread hole by engaging the support shaft with the restricting member inside the sewing machine arm. [0004] Patent Document 1: Japanese Patent Utility Model Registration No. 25867832 [0005] However, in the above-mentioned conventional threading device, when the hook cannot be positioned at the same level as the thread hole of the needle, it is necessary to adjust the engagement posi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D05B87/02
Inventor 石川均
Owner 积家国际株式会社