CN2045909U

CN2045909U - Electric brush device for motor

Info

Publication number: CN2045909U
Application number: CN88208373U
Authority: CN
Inventors: 李展雄
Original assignee: Johnson Electric Industrial Manufactory Ltd
Current assignee: Johnson Electric Industrial Manufactory Ltd
Priority date: 1987-07-14
Filing date: 1988-07-13
Publication date: 1989-10-11
Also published as: GB2207293A; JPS6416160U; DE8808999U1; GB8716517D0

Abstract

The utility model discloses an electric brush device for motor which comprises a brush arm (10) and a brush arm bear (11). The brush arm comprises two conduction band board which respectively form a wire connecting part (12) and an elastic electric brush supporting part (13). Two band boards are fixedly connected together with the interlapped relationship by making at least one projecting portion (14) which is transversely extended by the band board (12) be bent and crimpled relative to another band board (13). The brush arm bear (11) is provided with a groove (16) and a cutting groove (18) which is arranged on one side surface of the groove (16). The overlapped section of the band board is fixed in the groove (16) by slack match. The crimpling part of the projecting portion (14) is arranged in the cutting groove (18) by press fit. The crimpling part is firmly fixed between the walls (17) surface to surface of the cutting groove to prevent the brush arm from longitudinal shift.

Description

Electric brush device for motor

The utility model relates to the brushgear that is used for motor, and relates to the motor that this brush is housed.

Comprise a brush arm and the device that is supporting brush arm according to the brushgear that is used for motor that the utility model proposed, brush arm comprises that the band plate of two conductions forms the wiring part respectively and has more flexible brush supporting part, by make in the band plate at least one projection that crosses out of one relatively another band plate bending curl and two band plates are linked with the relation of mutual overlapping be fixed into one, the device of supporting brush arm has a grooving, is used to place crimping portion projection or each projection.The edge of a pair of opposite face of crimping portion contacts in two walls of grooving, and the wall of grooving extends along the overlapping parts transversely of two band plates.

Can clamp brush arm with this structure and to prevent that it from vertically moving, and this also has the following advantages, can be so that be positioned at brush on the brush supporting part of arm with respect to the accurate set of brush arm supporting arrangement, such as with respect to being positioned at the accurate set of brush arm supporting arrangement that motor terminal covers.

Consult accompanying drawing now, the utility model is described in more detail in conjunction with example, wherein:

Fig. 1 is the partial plan layout of an embodiment of the utility model brushgear.

Fig. 2 is the perspective view of brush arm shown in Figure 1.

Consult accompanying drawing now, brushgear comprises among two brush arm 10(figure has only represented one) and a brush arm supporting 11.The plastic end cover of a p.m.d.c. motor for example.

Brush arm 10 comprises that two conducting metal band plates 12 and 13 form a wiring part and a brush supporting part respectively.Band plate 12 and 13 is made by different metal, and band plate 12 is a kind of metals that can weld securely as the outside connection of brass and so on, and band plate 13 is a kind of flexible metals such as beallon or nickel iron chains alloy that have more.

Band plate 12 and 13 conllinear ground extend, wherein two projections, 14 relative band plate 13 bendings of stretching out from the opposite edges of band plate 12 are curled and are made band plate 12 and 13 be fixed into one with aspectant relation binding, and two measure-alike projections 14 are along indulging bearing of trend vertical direction alignings with band plate 12.

Band plate 12 has a through hole 19 and is used to admit outside the connection, is supporting a carbon brush 15 away from the end of band plate 12 by the method for routine at band plate 13.

Two band plates 12 and 13 overlapping part cooperate in the groove 16 that is fixed on brush arm supporting 11 with lax, and the crimping portion of projection 14 is fixed between aspectant two walls of grooving 18 on 16 the side with pressure fitted.Engages fixed brush arm 10 between the crimping portion of projection 14 and the wall 17, stop brush arm 10 to be along the longitudinal movement, and the wall 20 of groove 16 is supporting brush arm 10, stops brush arm 10 to move along direction shown in the arrow A among Fig. 1, does not deviate from from grooving 18 to guarantee crimping portion.

Above-described embodiment just provides by way of example, is apparent and do various improvement for a person skilled in the art in the situation that does not deviate from the utility model scope that is limited by attached claim. For example, only has a crimping portion. Yet in this case, single crimping portion is overlapped on the band plate 13, and the Extendible Extent of crimping portion is bigger than each Extendible Extent in the crimping portion shown in the accompanying drawing. In addition, this or each crimping portion can be by the two or more littler Partial Replacements along the vertical bearing of trend interval of brush arm.

Two or more Partial Replacements along the bearing of trend interval of brush arm.

Claims

1, the brushgear that is used for motor, its feature comprises a brush arm and is supporting the device of brush arm, brush arm comprises that two conduction band plates form the wiring part respectively and have more flexible brush supporting part, by at least one projection that crosses out making in the band plate relatively another band plate bending curl and two band plates are linked with the relation of mutual overlapping be fixed into one, the device of supporting brush arm has grooving and is used to place crimping portion projection or each projection.The edge of a pair of opposite face of crimping portion contacts in two walls of grooving, and the wall of grooving extends along the overlapping parts transversely of two band plates.

2, according to the brushgear of claim 1, the overlapping that it is characterized in that two band plates partly is positioned at groove on the brush arm supporting arrangement and the grooving on side of this groove holds.

3, brushgear according to claim 1 and 2, it is characterized in that a described band plate has two bendings and curling projection, one of them projection stretches out from an edge of a described band plate, and another projection stretches out from the opposite edges of described band plate.

4,, it is characterized in that a described band plate is the wiring part according to any described brushgear in the claim 1 to 3.

5, according to any described brushgear in the claim 1 to 4, its feature comprises two brush arms and two groovings, and described grooving is positioned on the brush arm supporting arrangement, and the crimping portion of two brush arms places two groovings respectively.

6,, it is characterized in that the brush arm supporting arrangement is positioned on the end cap of motor according to any described brushgear in the aforementioned claim.