CN203787731U

CN203787731U - Micro motor brush

Info

Publication number: CN203787731U
Application number: CN201420073362.9U
Authority: CN
Inventors: 孙涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-02-20
Filing date: 2014-02-20
Publication date: 2014-08-20
Anticipated expiration: 2024-02-20

Abstract

The utility model relates to a micro motor brush, which comprises a brush holder and a brush sheet fixedly connected with the brush holder, wherein the brush sheet is strip-shaped; the brush sheet and the brush holder are vertically connected; the size of the brush holder along the length direction of the brush sheet is increased by 1+/-0.2mm; and the brush sheet has a length of 10+/-0.1mm, a width of 0.9+/-0.05mm and a thickness of 0.07+/-0.005mm. As the overall size of the brush sheet 2 provided by the utility model is smaller than the overall size of the brush sheet provided by the prior art, metal (generally nickel silver copper) used by the brush sheet 2 is little, the production cost of the brush sheet 2 is thus reduced, and mass production is facilitated; in addition, as the width of the brush sheet 2 is reduced, the sizes of a commutator and a varistor corresponding to the brush sheet are also reduced, precious metal (generally silver) used on the outer surfaces of the commutator and the varistor is reduced, and the production cost of the micro motor is thus reduced.

Description

Micro-motor brush

Technical field

The utility model relates to a kind of micro-motor brush.

Background technology

At present, the brushing piece length of existing micro-motor brush is that 11mm, width are that 1.2mm, thickness are 0.07mm, and on the one hand because the overall dimensions of brushing piece is large, brushing piece need to be used more metal (being generally foreign copper-nickel alloy) to produce, cause the production cost of brushing piece high, be unfavorable for batch production; On the other hand, because the width dimensions of brushing piece is large, make the size of corresponding with it commutator and piezo-resistance large, the noble metal (being generally silver) that causes commutator and piezo-resistance outer surface to use is more, and then causes the production cost of electrical micro-machine high.

Utility model content

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and the micro-motor brush that a kind of production cost is low, can manufacture is provided.

The utility model is to realize like this, a kind of micro-motor brush, comprise a brush holder and a brushing piece being fixedly connected with described brush holder, described brushing piece is bar shaped, between described brushing piece and described brush holder, vertically connect, described brush holder increases by 1 ± 0.2mm along the size of described brushing piece length direction, and described brushing piece is of a size of: length 10 ± 0.1mm, width 0.9 ± 0.05mm, thickness 0.07 ± 0.005mm.

Particularly, described brush holder is coated with the metallic plate punch forming of electrodeposited coating by a whole surface, and the whole surface of described brush holder after punch forming is also coated with an electrodeposited coating.

Particularly, described electrodeposited coating is zinc electrodeposited coating or chromium electrodeposited coating.

Further, on described brushing piece middle part, be also stained with an amortisseur bar of being made by quality of rubber materials.

Further, micro-motor brush of the present utility model also comprises a location material strip being fixedly connected with described brush holder, and described location material strip, brush holder and brushing piece are all positioned at same plane.

Particularly, described brush holder is riveted with described brushing piece and described location material strip respectively.

The overall dimensions of the brushing piece that the utility model provides is less than the overall dimensions of brushing piece of the prior art, and the metal (being generally foreign copper-nickel alloy) that therefore brushing piece is used reduces, thereby has reduced the production cost of brushing piece, is conducive to batch production; In addition, because the width dimensions of brushing piece reduces, with it corresponding commutator and the size of piezo-resistance are also reduced, thereby the noble metal (being generally silver) that commutator and piezo-resistance outer surface use also reduces, and then reduced the production cost of electrical micro-machine.

Brief description of the drawings

In order to be illustrated more clearly in the technical solution of the utility model, to the accompanying drawing of required use in embodiment be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the schematic diagram of the micro-motor brush that provides of the utility model embodiment.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described.

As shown in Figure 1, a kind of micro-motor brush that the utility model embodiment provides, comprise a brush holder 1 and a brushing piece 2 being fixedly connected with brush holder 1, brushing piece 2 is bar shaped, between brushing piece 2 and brush holder 1, vertically connect, brush holder 1 increases by 1 ± 0.2mm along the size of brushing piece 2 length directions, and brushing piece 2 is of a size of: length 10 ± 0.1mm, width 0.9 ± 0.05mm, thickness 0.07 ± 0.005mm.

Due to the length dimension 10 ± 0.1mm of brushing piece 2 of the present utility model, reduce 1mm left and right than the length dimension of brushing piece of the prior art, but brush holder 1 has increased 1mm left and right along the size of brushing piece 2 length directions, therefore the total length that brush holder 1 and brushing piece 2 total length after linking together can link together with brush holder of the prior art and brushing piece is consistent, and has ensured the normal use of brush.

The overall dimensions of the brushing piece that the overall dimensions of the brushing piece 2 providing due to the utility model provides than prior art is little, and the metal (being generally foreign copper-nickel alloy) that brushing piece 2 is used is less, thereby has reduced the production cost of brushing piece 2, is conducive to batch production; In addition, because the width dimensions of brushing piece 2 reduces, with it corresponding commutator and the size of piezo-resistance are also reduced, thereby the noble metal (being generally silver) that commutator and piezo-resistance outer surface use also reduces, and then reduced the production cost of electrical micro-machine.

Further, brush holder 1 is coated with the metallic plate (not shown) punch forming of electrodeposited coating (not shown) by a whole surface, the whole surface (comprise section) of brush holder 1 after punch forming is also coated with electrodeposited coating, therefore can prevent that the section of brush holder 1 after punch forming is oxidized and gets rusty by airborne acidic materials, be conducive to brush holder 1 firm with miscellaneous part welding, be not easy to come off, can not cause product bad.

Particularly, described electrodeposited coating is zinc electrodeposited coating or chromium electrodeposited coating, and zinc electrodeposited coating or chromium electrodeposited coating good antirust property, be not easy brush holder oxidized.

Further, described brushing piece is also stained with an amortisseur bar of being made up of quality of rubber materials 21 on 2 middle parts, and amortisseur bar 21 can increase the elasticity of brushing piece 2, improves the useful life of brushing piece 2.

Further, micro-motor brush of the present utility model also comprises a location material strip 3 being fixedly connected with brush holder 1, and location material strip 3, brush holder 1 and brushing piece 2 are all positioned at same plane, are convenient to the installation of brush.

Particularly, described brush holder 1 is riveted with brushing piece 2 and location material strip 3 respectively, uses the connected mode of riveted joint, brushing piece, brush holder and location tablet closely can be linked together simultaneously, and good stability, simple to operate, easy to connect.

The above is preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications are also considered as protection range of the present utility model.

Claims

1. a micro-motor brush, comprise a brush holder and a brushing piece being fixedly connected with described brush holder, it is characterized in that, described brushing piece is bar shaped, between described brushing piece and described brush holder, vertically connect, described brush holder increases by 1 ± 0.2mm along the size of described brushing piece length direction, and described brushing piece is of a size of: length 10 ± 0.1mm, width 0.9 ± 0.05mm, thickness 0.07 ± 0.005mm.

2. micro-motor brush according to claim 1, is characterized in that, described brush holder is coated with the metallic plate punch forming of electrodeposited coating by a whole surface, and the whole surface of described brush holder after punch forming is also coated with an electrodeposited coating.

3. micro-motor brush according to claim 2, is characterized in that, described electrodeposited coating is zinc electrodeposited coating or chromium electrodeposited coating.

4. micro-motor brush according to claim 1, is characterized in that, described brushing piece is also stained with an amortisseur bar of being made up of quality of rubber materials on middle part.

5. according to the micro-motor brush described in any one in claim 1 ~ 4, it is characterized in that, also comprise a location material strip being fixedly connected with described brush holder, described location material strip, brush holder and brushing piece are all positioned at same plane.

6. micro-motor brush according to claim 5, is characterized in that, described brush holder is riveted with described brushing piece and described location material strip respectively.