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Dustproof structure of sewing machine housing

A dust-proof structure, sewing machine technology, applied in the field of sewing machines, can solve the problems of encoder, grating influence, dust, and sewing work cannot be carried out in an orderly manner, and achieves the effect of good dust-proof effect, prolonging service life and small gap.

Inactive Publication Date: 2016-08-31
JACK SEWING MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When sewing some special fabrics, a lot of dust is caused. When the hand wheel of the sewing machine rotates, the dust will be brought into the protective cover. The dust brought in can easily enter the encoder and affect the encoder and the grating. This will affect the normal operation of the motor, resulting in the inability to carry out the sewing work in an orderly manner.

Method used

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  • Dustproof structure of sewing machine housing
  • Dustproof structure of sewing machine housing
  • Dustproof structure of sewing machine housing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The dust-proof structure refers to a filter screen arranged on the hand wheel 4 to prevent dust from entering the protective cover 2 . The filter screen is arranged on the inner wall or the outer wall of the hand wheel 4 to directly block the dust, and the wind can still enter the protective cover 2 through the filter screen. This structure is simple and convenient, but the filter screen needs to be cleaned frequently.

Embodiment 2

[0031] The dust-proof structure can also be a small multi-bending air inlet air duct formed between the hand wheel 4 , the protective cover 2 and the main shaft 1 . like figure 1 , 2 , 3, 4 shown.

[0032] The multi-bending air inlet duct is as follows: an annular groove 5 is provided on the inner surface of the hand wheel 4, and an annular protrusion 6 extends outward along the axial direction of the main shaft 1 on the corresponding outer surface of the protective cover 2. One end of the protrusion 6 is inserted in the annular groove 5, a gap is formed between the annular protrusion 6 and the annular groove 5, and between the outer side wall of the annular groove 5 and the outer cylindrical surface of the annular protrusion 6, Between the end surface of the annular protrusion 6 and the inner bottom of the annular groove 5, between the inner wall of the annular groove 5 and the inner cylindrical surface of the annular protrusion 6, between the inner cylindrical surface of t...

Embodiment 3

[0036] This embodiment and the second embodiment adopt different multi-bending air inlet ducts: on the outer surface of the protective cover 2, there is an annular protrusion 6 extending axially outward along the main shaft 1, and the outer end of the annular protrusion 6 is close to the handwheel 4, and form a gap between the outer end surface of the annular protrusion 6 and the inner side wall of the hand wheel 4, between the outer end surface of the annular protrusion 6 and the inner side wall of the hand wheel 4, the inner side wall of the annular protrusion 6 Between the inner cylindrical surface and the main shaft, and between the inner hole wall of the protective cover 2 and the main shaft 1, a multi-bending air inlet air duct is formed. like Figure 5 shown.

[0037] Wherein, the distance D3 between the outer end surface of the annular protrusion 6 and the inner side wall of the hand wheel 4 is 1±0.05mm, generally 1mm is selected, which can effectively prevent dust wi...

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Abstract

The invention belongs to the technical field of sewing machines and particularly provides a dustproof structure of a sewing machine housing. The dustproof structure comprises a spindle, wherein a protective cover for covering a motor assembly is arranged on the spindle, a hand wheel is arranged on the spindle outside the protective cover, and a dustproof structure body for preventing outside dust from falling into the protective cover is arranged on the hand wheel or between the hand wheel and the protective cover. The dustproof structure can effectively prevent dust from falling into the protective cover and affecting components including encoders, gratings and the like, prolong the service life of a motor and ensure orderly production.

Description

Technical field: [0001] The invention belongs to the technical field of sewing machines, in particular to a dustproof structure for a sewing machine cover. Background technique: [0002] Current sewing machines generally adopt a direct drive structure. One end of the main shaft of the sewing machine is provided with a direct-drive motor assembly, and the motor assembly includes components such as an encoder and a grating. The motor assembly is arranged inside the protective casing, the main shaft extends out of the protective casing, and a hand wheel is connected to it. There are gaps between the existing protective case and the main shaft, and between the protective case and the hand wheel. When sewing some special fabrics, a lot of dust is caused. When the hand wheel of the sewing machine rotates, the dust will be brought into the protective cover. The dust brought in can easily enter the encoder and affect the encoder and the grating. And then affect the normal operati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B73/02
CPCD05B73/02
Inventor 颜文祥钟亚强
Owner JACK SEWING MASCH CO LTD
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