Sewing machine

A technology for sewing machines and needle clips, which is applied to sewing machine components, sewing machine needle holders, sewing equipment, etc., and can solve the problems of complicated and difficult replacement operations of needle clip parts 3

Inactive Publication Date: 2003-03-05
YAMATO SEWING MASCH MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, it is more difficult to embed the front end of the screwdriver inserted from the through hole 13 into the screw head groove of the fixed threaded part 19.
This also makes the replacement operation of the needle clip part 3 complicated

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0044] Refer to Figure 1 to Figure 5 A first embodiment of the present invention will be described. And in the sewing machine of the present invention, the structures other than the connecting portion of the needle bar and the needle clamp member are different from those in the Figure 12 It is the same as the past flat chain sewing machine 1 explained in Fig. 15, and Figure 12 The drawing descriptions related to each drawing of FIG. 15 are used in the first embodiment here.

[0045] Fig. 1 shows the exploded perspective view of the needle bar 20 and the needle clip part 21 of the present embodiment, figure 2 A longitudinal sectional view showing the connecting portion of the needle bar 20 and the needle clamp member 21, image 3 Representing the cross-sectional view of the connecting portion of the needle bar 20 and the needle clamp member 21 at right angles to the axis, Figure 4 express figure 2 An enlarged cross-sectional view of a part of Figure 5 Indicated by ...

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PUM

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Abstract

To provide a sewing machine that eliminates the need for or facilitates the height adjustment of a needle bar and position adjustment of a needle plate with regard to a needle location hole that are required in replacing a needle clamp, and can facilitate the replacement of the needle clamp itself. A needle bar (20) is hollow and is provided with a screw insertion hole (28a) at the lower end. A tapped hole (29) is formed in the radial direction of a positioning member (22) mounted to the lower end of the needle bar (20). An insertion shaft (26) extending parallel with a needle (23) is formed at the upper part of a needle clamp (21). A flat portion (27) is formed on the side of the insertion shaft (26). In mounting the needle clamp (21), the positioning member (22) is mounted to the lower end of the needle bar (20), the insertion shaft (26) of the needle clamp (21) is inserted from the lower end of the needle bar 20, and a needle clamp fixing screw (24) is threadedly attached to the tapped hole (29) of the positioning member (22). The top face (33) of the needle clamp fixing screw (24) butts the flat face (27) of the insertion shaft (26) of the needle clamp (21) and thereby determines the position around the axis of the needle clamp (21).

Description

technical field [0001] The present invention relates to a sewing machine which can replace a needle clip part for fixing a sewing needle. Background technique [0002] Figure 12 It is a perspective view showing the structure around the sewing needle of the conventional flat chain stitch sewing machine 1 . The flat chain stitch sewing machine 1 is horizontally equipped with a needle jack 5 on the sewing machine base plate 6 , and is provided with a plurality of needle jacks 5 , here are 3 sewing needles 4 . The sewing needle 4 is fixed on the needle clamp part 3, and the needle clamp part 3 is fixed on the lower end of the vertically arranged needle bar 2. The top of the needle bar 2 is connected with the crankshaft 66 (referring to Fig. 14), and the rotation of the crankshaft 66 makes the needle bar 2 reciprocate in the up and down direction, and the sewing needle 4 is inserted in the wrong foot hole 9 of the needle jack plate 5. A pressing member (not shown) for pressing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B55/02D05B1/10D05B55/10
Inventor 水崎隆丸山隆
Owner YAMATO SEWING MASCH MFG CO LTD
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