CN203645113U - 一种新型电刷 - Google Patents

一种新型电刷 Download PDF

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Publication number
CN203645113U
CN203645113U CN201320733854.1U CN201320733854U CN203645113U CN 203645113 U CN203645113 U CN 203645113U CN 201320733854 U CN201320733854 U CN 201320733854U CN 203645113 U CN203645113 U CN 203645113U
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brush
commutator
spring
electric brush
motor
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CN201320733854.1U
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刘武
孙文钊
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Shaanxi Aerospace Times Navigation Equipment Co ltd
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BAOJI HUAKE AEROSPACE ELECTRO-MECHANICAL INDUSTRYL Co Ltd
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Abstract

本实用新型目的是设计一种新型电刷，以克服现有电刷容易卡死的弊端。具体地说，新型电刷，由换向器、弹簧、电刷箱体、电刷构成，换向器安装在电刷箱体中部，其特征是电刷为弯钩状，且一端和换向器接触，另外一端通过铆钉直接铆接在电刷箱体上以铆接点为中心旋转，弹簧一端伸出的外钩压在电刷弯钩的最高点。本实用新型解决了弹簧卡死的现象；由于电刷是一次铆接的，装配容易。采用此种新型电刷的电机转动平滑，空载启动电压小，提高了电机的可靠性。通过数据分析，电机满足了设计要求。

Description

一种新型电刷
技术领域
本实用新型涉及航空、航天、兵器、医疗器械、机器人和一些特殊领域，甚至在纺织机械、激光测量仪器等技术领域。
背景技术
目前国内空心杯电机的电刷都采用传统的电刷设计方案，电刷和弹簧在一条直线上，电刷为长方体式，弹簧在电刷后端被压缩使电刷作用在换向器上，起到电机机械换向的作用，弹簧和电刷都是装配时放到电刷箱体上安装的电刷盒中，如图1所示，这种电刷的缺点是：由于弹簧在装配时，是放到电刷盒之后，再在前端装配电刷，装配难度大，电刷对换向器的压力的一致性很难保证，弹簧的变形量也很难保证，这样就直接影响电机的空载启动电压，在以前的电机中出现过弹簧卡死的现象，而使电刷不能接触到换向器，电机停转。
在这种背景下，就需要寻求一种新型电刷的设计方法，解决以上电刷的缺点。
发明内容
本实用新型目的是设计一种新型电刷，以克服现有电刷容易卡死的弊端。
具体地说，新型电刷，由换向器、弹簧、电刷箱体、电刷构成，换向器安装在电刷箱体中部，其特征是电刷为弯钩状，且一端和换向器接触，另外一端通过铆钉直接铆接在电刷箱体上以铆接点为中心旋转，弹簧一端伸出的外钩压在电刷弯钩的最高点。
本实用新型解决了弹簧卡死的现象；由于电刷是一次铆接的，装配容易。采用此种新型电刷的电机转动平滑，空载启动电压小，提高了电机的可靠性。通过数据分析，电机满足了设计要求。
附图说明
图1为现有结构电刷结构示意图。
图号说明：1-1弹簧；1-2换向器；1-3电刷；1-4电刷箱体；1-5电刷盒。
图2为本实用新型结构示意图。
图号说明：1-换向器；2-弹簧；3-电刷箱体；4-电刷。
具体实施方式
如图2所示给出了本实用新型具体实施方式。电刷4结构上设计为弯钩状，一端和换向器1接触，一端通过铆钉直接铆接在电刷箱体3上，以铆接点为中心旋转，弹簧2一端伸出的外钩压在电刷弯钩的最高点，这样就通过弹簧的扭力来使电刷作用在换向器上，设计中要求保证空心杯电机在转动时一对电刷和换向器的接触为3或4片换向片，弹簧的扭力一致性好，这样空心杯电机的空载启动电压就小。和传统的电刷相比，此新型电刷没有电刷盒，为无刷握电刷，空间利用率高，工作行程长，工作寿命长，利于小尺寸空间中石墨电刷的安装。

Claims (1)

1.新型电刷，由换向器（1）、弹簧（2）、电刷箱体（3）、电刷（4）构成，换向器（1）安装在电刷箱体（3）中部，其特征是电刷（4）为弯钩状，且一端和换向器接触，另外一端通过铆钉直接铆接在电刷箱体（3）上以铆接点为中心旋转，弹簧（2）一端伸出的外钩压在电刷（4）弯钩的最高点。
CN201320733854.1U 2013-11-18 2013-11-18 一种新型电刷 Expired - Lifetime CN203645113U (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103633525A (zh) * 2013-11-18 2014-03-12 宝鸡航天华科机电工业有限公司 一种新型电刷

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103633525A (zh) * 2013-11-18 2014-03-12 宝鸡航天华科机电工业有限公司 一种新型电刷

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Owner name: SHAANXI AEROSPACE NAVIGATION EQUIPMENT CO., LTD.

Free format text: FORMER OWNER: BAOJI HUAKE AEROSPACE ELECTRO-MECHANICAL INDUSTRYL CO., LTD.

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Address after: Baoji City, Shaanxi Province, 721006 West Road Weibin District No. 43

Patentee after: SHAANXI SPACEFLIGHT NAVIGATION EQUIPMENT CO.,LTD.

Address before: 721000 No. 2 factory building, hi tech Development Zone, Shaanxi, Baoji

Patentee before: BAOJI AEROSPACE HUAKE ELECTROMECHANICAL INDUSTRY CO.,LTD.

C41 Transfer of patent application or patent right or utility model
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Effective date of registration: 20161010

Address after: 430056 hi tech park, Wuhan economic and Technological Development Zone, Hubei

Patentee after: Aerospace Times Electronic Technology Co.,Ltd.

Address before: Baoji City, Shaanxi Province, 721006 West Road Weibin District No. 43

Patentee before: SHAANXI SPACEFLIGHT NAVIGATION EQUIPMENT CO.,LTD.

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20171215

Address after: 721006 Baoji hi tech Development Zone, new town, science and technology, Shaanxi

Patentee after: SHAANXI AEROSPACE TIMES NAVIGATION EQUIPMENT Co.,Ltd.

Address before: 430056 hi tech park, Wuhan economic and Technological Development Zone, Hubei

Patentee before: Aerospace Times Electronic Technology Co.,Ltd.

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20140611