WO2017097179A1 - 碳刷筒和电机 - Google Patents

碳刷筒和电机 Download PDF

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Publication number
WO2017097179A1
WO2017097179A1 PCT/CN2016/108680 CN2016108680W WO2017097179A1 WO 2017097179 A1 WO2017097179 A1 WO 2017097179A1 CN 2016108680 W CN2016108680 W CN 2016108680W WO 2017097179 A1 WO2017097179 A1 WO 2017097179A1
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WO
WIPO (PCT)
Prior art keywords
carbon brush
brush cylinder
cylinder
heat dissipating
motor
Prior art date
Application number
PCT/CN2016/108680
Other languages
English (en)
French (fr)
Inventor
邱湘淮
Original Assignee
广东肇庆爱龙威机电有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 广东肇庆爱龙威机电有限公司 filed Critical 广东肇庆爱龙威机电有限公司
Priority to US16/060,393 priority Critical patent/US20180366895A1/en
Priority to MX2018006909A priority patent/MX2018006909A/es
Priority to EP16872370.8A priority patent/EP3389152A4/en
Priority to KR1020187015463A priority patent/KR20180090799A/ko
Publication of WO2017097179A1 publication Critical patent/WO2017097179A1/zh

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/28—Cooling of commutators, slip-rings or brushes e.g. by ventilating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/38—Brush holders
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/38—Brush holders
    • H01R39/41—Brush holders cartridge type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/14—Means for supporting or protecting brushes or brush holders
    • H02K5/143—Means for supporting or protecting brushes or brush holders for cooperation with commutators
    • H02K5/145—Fixedly supported brushes or brush holders, e.g. leaf or leaf-mounted brushes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/14—Means for supporting or protecting brushes or brush holders
    • H02K5/143—Means for supporting or protecting brushes or brush holders for cooperation with commutators
    • H02K5/148—Slidably supported brushes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/10—Connectors or connections adapted for particular applications for dynamoelectric machines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/38—Brush holders
    • H01R39/388—Brush holders characterised by the material of the brush holder
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/38—Brush holders
    • H01R39/39—Brush holders wherein the brush is fixedly mounted in the holder

Definitions

  • Embodiments of the present disclosure relate to the field of machinery, and more particularly to a carbon brush cartridge and an electric motor.
  • a carbon brush is a device that transfers energy or signals between a fixed portion and a rotating portion of a motor or other rotating machine. It is generally made of a pure carbon plus coagulant and is generally square in shape. The carbon brush is generally in contact with the commutator of the motor as a sliding contact for conducting current. Almost all DC motors use carbon brushes, which are an important part of the motor. Typically, a carbon brush cartridge is provided on the plastic end cap of the DC motor by injection molding for carrying the carbon brush.
  • FIG. 1 is a cross-sectional view showing a carbon brush cylinder of the prior art.
  • the intermediate position of the four inner surfaces of the carbon brush cylinder 1 is provided with a heat dissipating groove a so as to be spaced apart from the carbon brush by a certain amount. The distance is used to dissipate heat during operation, and the four inner corners of the carbon brush cylinder 1 are in direct contact with the carbon brush 2 to carry the carbon brush 2.
  • embodiments of the present disclosure provide a carbon brush cylinder, the carbon brush cylinder
  • the inner surface encloses a space for carrying the carbon brush, wherein a heat dissipating groove is formed at a position of the inner corner of the carbon brush cylinder.
  • an intermediate position of the inner surface of the carbon brush cylinder is in contact with the carbon brush.
  • the heat dissipating groove is opened at an end of two opposite inner surfaces of the carbon brush cylinder, and no heat dissipating groove is disposed at an end of the other two opposite inner surfaces of the carbon brush cylinder. Thereby a portion of each inner corner of the carbon brush cylinder is not in contact with the carbon brush.
  • the ends of the four inner surfaces of the carbon brush cylinder are provided with heat dissipation grooves such that each inner corner of the carbon brush cylinder is completely out of contact with the carbon brush.
  • the heat dissipation groove has a square shape in cross section.
  • the cross-sectional shape of the heat dissipation groove is an arrow shape.
  • Embodiments of the present disclosure also provide an electric machine including a carbon brush and the above-described carbon brush cylinder provided by an embodiment of the present disclosure, the carbon brush cylinder being disposed on an end cover of the motor by injection molding.
  • the carbon brush cylinder and the motor of the embodiment of the present disclosure have at least the following advantages: the inner corner of the carbon brush cylinder of the embodiment of the present disclosure is provided with a heat dissipating groove so that the inner corner of the carbon brush cylinder The accumulated heat in the position is quickly released, avoiding the excessive temperature at the inner corner of the carbon brush cylinder, reducing the risk of plastic melting at the inner corner of the carbon brush cylinder, thereby prolonging the service life of the carbon brush cylinder and the carbon brush.
  • Figure 1 shows a cross-sectional view of a prior art carbon brush cartridge
  • FIG. 2 illustrates a perspective view of an end cap of a motor in accordance with an embodiment of the present disclosure
  • FIG. 3 illustrates a cross-sectional view of an end cap of a motor in accordance with an embodiment of the present disclosure
  • FIG. 4 illustrates a cross-sectional view of a carbon brush cartridge in accordance with an embodiment of the present disclosure
  • FIG. 5 illustrates a cross-sectional view of a carbon brush cartridge in accordance with another embodiment of the present disclosure
  • FIG. 6 shows a cross-sectional view of a carbon brush cartridge in accordance with yet another embodiment of the present disclosure
  • FIG. 7 illustrates a cross-sectional view of a carbon brush cartridge in accordance with still another embodiment of the present disclosure.
  • FIGS. 2 and 3 respectively show a perspective view and a cross-sectional view of an end cap of a motor in accordance with an embodiment of the present disclosure.
  • the carbon brush cylinder 1 is placed on the end cover 3 of the motor by injection molding.
  • FIG. 4 illustrates a carbon brush cartridge in accordance with an embodiment of the present disclosure.
  • the ends of the two opposite inner surfaces 11, 12 of the carbon brush cylinder 1 i.e., the upper inner surface and the lower inner surface in Fig. 4
  • the other two of the carbon brush cylinders are provided.
  • the ends of the opposite inner surfaces 13, 14 i.e., the left inner surface and the right inner surface in Fig. 4
  • the intermediate position of the inner surface of the carbon brush cylinder 1 is in contact with the carbon brush 2, thereby functioning to support the carbon brush 2.
  • the heat dissipating groove b shown in Fig. 4 has a square shape in cross section.
  • One of ordinary skill in the art can also provide heat sinks of other shapes according to actual needs to achieve heat dissipation effects, and these modifications do not depart from the scope of protection of the present disclosure.
  • FIG. 5 illustrates a carbon brush cartridge in accordance with another embodiment of the present disclosure.
  • the ends of the upper inner surface 11 and the lower inner surface 12 of the carbon brush cylinder 1 shown in FIG. 5 are not provided with heat dissipation grooves, and the left inner surface 13 and the right inner side of the carbon brush cylinder.
  • the end of the surface 14 is provided with a heat dissipation groove c.
  • the heat dissipating groove c shown in Fig. 5 has a square shape in cross section.
  • One of ordinary skill in the art can also provide heat sinks of other shapes according to actual needs to achieve heat dissipation effects, and these modifications do not depart from the scope of protection of the present disclosure.
  • FIG. 6 and 7 respectively show cross-sectional views of a carbon brush cartridge in accordance with still another embodiment of the present disclosure and still another embodiment.
  • the four inner surfaces of the carbon brush cylinder 1 The ends of the faces 11, 12, 13, 14 are each provided with a heat dissipating groove so that the four inner corners of the carbon brush cylinder 1 are completely out of contact with the carbon brush 2. That is, a heat dissipating groove capable of completely separating the corner portion of the carbon brush 2 from the carbon brush cylinder 1 is provided at a position of the four inner corners of the carbon brush cylinder 1.
  • the intermediate position of the inner surface of the carbon brush cylinder 1 is in contact with the carbon brush 2, thereby functioning to support the carbon brush 2.
  • Figures 6 and 7 show two differently shaped heat sinks d and e, respectively.
  • the cross-sectional shape of the heat dissipation groove d shown in Fig. 6 is an arrow shape, and the heat dissipation groove e shown in Fig. 7 has a square shape in cross section.
  • One of ordinary skill in the art can also provide heat sinks of other shapes according to actual needs to achieve heat dissipation effects, and these modifications do not depart from the scope of protection of the present disclosure.
  • the heat dissipating groove is opened at the position of the inner corner of the carbon brush cylinder, the accumulated heat at the position of the inner corner of the carbon brush cylinder is quickly released, and the temperature at the inner corner of the carbon brush cylinder is prevented from being excessively high and lowered.
  • the risk of plastic melting at the inner corners of the carbon brush cylinder extends the life of the carbon brush cartridge and carbon brushes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Current Collectors (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

一种碳刷筒和电机，所述碳刷筒（1）的内表面围成用于承载碳刷（2）的空间，其中，在所述碳刷筒（1）的内角的位置开设有散热槽（b，c，d，e）。由于碳刷筒的内角的位置开设有散热槽，从而使得在碳刷筒的内角的位置累计的热量得以快速释放，避免了碳刷筒的内角处温度过高，降低了碳刷筒的内角处的塑料融化的风险，从而延长了碳刷筒和碳刷的使用寿命。

Description

碳刷筒和电机
相关申请的交叉引用
本申请要求于2015年12月09日递交的中国专利申请第201521015615.8号的优先权和权益，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。
技术领域
本公开的实施例涉及机械领域，特别涉及一种碳刷筒和电机。
背景技术
碳刷是在电机或其它旋转机械的固定部分和转动部分之间传递能量或信号的装置，一般由纯碳加凝固剂制成，外型一般是方块状。碳刷一般与电机的换向器接触，作为传导电流的滑动接触体。几乎所有的直流电机都使用碳刷，碳刷是电机的重要组成部件。通常，在直流电机的塑料端盖上通过注塑成型而设置有碳刷筒以用于承载碳刷。
图1示出了现有技术中的碳刷筒的截面图，从图1中可以看出，碳刷筒1的四个内表面的中间位置开设有散热槽a从而与碳刷间隔开一定的距离以用于在工作过程中散热，而碳刷筒1的四个内角则与碳刷2直接接触以承载碳刷2。
现有技术中，由于碳刷筒的四个内角与碳刷直接接触，从而导致碳刷筒的四个内角的位置因为火花导致温度升高。由于在碳刷筒的四个内角累计的热量比内表面的中间位置更加难以释放，从而导致碳刷筒的内角处温度过高，造成碳刷筒的内角处的塑料融化并附着在碳刷上，从而降低了碳刷筒和碳刷的使用寿命。
发明内容
为了解决上述问题，本公开的实施例提供了一种碳刷筒，所述碳刷筒 的内表面围成用于承载碳刷的空间，其中，在所述碳刷筒的内角的位置开设有散热槽。
可选地，所述碳刷筒的内表面的中间位置与所述碳刷接触。
可选地，在所述碳刷筒的两个相对的内表面的端部开设有所述散热槽，在所述碳刷筒的另外两个相对的内表面的端部不设置有散热槽，从而使得所述碳刷筒的每个内角的一部分不与所述碳刷接触。
可选地，所述碳刷筒的四个内表面的端部均开设有散热槽，从而使得所述碳刷筒的每个内角完全不与所述碳刷接触。
可选地，所述散热槽的截面形状为方形。
可选地，所述散热槽的截面形状为箭头形。
本公开的实施例还提供了一种电机，所述电机包括碳刷和本公开的实施例提供的上述碳刷筒，所述碳刷筒通过注塑成型设置在所述电机的端盖上。
与现有技术相比，本公开的实施例的碳刷筒和电机至少具有以下优点：由于本公开的实施例的碳刷筒的内角的位置开设有散热槽，从而使得在碳刷筒的内角的位置累计的热量得以快速释放，避免了碳刷筒的内角处温度过高，降低了碳刷筒的内角处的塑料融化的风险，从而延长了碳刷筒和碳刷的使用寿命。
附图说明
图1示出了现有技术中的碳刷筒的截面图；
图2示出了根据本公开的一个具体实施方式的电机的端盖的立体图；
图3示出了根据本公开的一个具体实施方式的电机的端盖的截面图；
图4示出了根据本公开的一个具体实施方式的碳刷筒的截面图；
图5示出了根据本公开的另一个具体实施方式的碳刷筒的截面图；
图6示出了根据本公开的又一个具体实施方式的碳刷筒的截面图；
图7示出了根据本公开的再一个具体实施方式的碳刷筒的截面图。
具体实施方式
下面参照附图描述根据本公开的实施例的碳刷筒和电机。在下面的描述中，阐述了许多具体细节以便使所属技术领域的技术人员更全面地了解本公开。但是，对于所属技术领域内的技术人员明显的是，本公开的实现可不具有这些具体细节中的一些。此外，应当理解的是，本公开并不限于所介绍的特定实施例。相反，可以考虑用下面的特征和要素的任意组合来实施本公开，而无论它们是否涉及不同的实施例。因此，下面的方面、特征、实施例和优点仅作说明之用而不应被看作是权利要求的要素或限定，除非在权利要求中明确提出。
图2和图3分别示出了根据本公开的一个具体实施方式的电机的端盖的立体图和截面图。如图2和图3所示，碳刷筒1通过注塑成型设置在电机的端盖3上。
图4示出了根据本公开的一个具体实施方式的碳刷筒。如图4所示，碳刷筒1的两个相对的内表面11、12(即图4中的上内表面和下内表面)的端部开设有散热槽b，而碳刷筒的另外两个相对的内表面13、14(即图4中的左内表面和右内表面)的端部不设置有散热槽，从而使得碳刷筒1的每个内角的一部分不与碳刷2接触。碳刷筒1的内表面的中间位置与碳刷2接触，从而起到支承碳刷2的作用。图4中示出的散热槽b的截面形状为方形。本领域普通技术人员也可以根据实际需要设置其它形状的散热槽以达到散热效果，这些变型不脱离本公开的保护范围。
图5示出了根据本公开的另一个具体实施方式的碳刷筒。与图4的实施方式不同的是，图5所示的碳刷筒1的上内表面11和下内表面12的端部不设置有散热槽，而碳刷筒的左内表面13和右内表面14的端部开设有散热槽c。图5中示出的散热槽c的截面形状为方形。本领域普通技术人员也可以根据实际需要设置其它形状的散热槽以达到散热效果，这些变型不脱离本公开的保护范围。
图6和图7分别示出了根据本公开的又一个具体实施方式和再一个具体实施方式的碳刷筒的截面图。如图6和图7所示，碳刷筒1的四个内表 面11、12、13、14的端部均开设有散热槽，从而使得碳刷筒1的四个内角完全不与碳刷2接触。也就是说，在碳刷筒1的四个内角的位置处开设有能够完全将碳刷2的角部与碳刷筒1间隔开的散热槽。碳刷筒1的内表面的中间位置与碳刷2接触，从而起到支承碳刷2的作用。与图4和图5中的仅在碳刷筒的两个相对的内表面的端部开设有散热槽的技术方案相比，图6和图7中的在碳刷筒的四个内表面的端部均开设有散热槽的技术方案可以获得更好的散热效果。
图6和图7分别示出了两种不同形状的散热槽d和e。图6中示出的散热槽d的截面形状为箭头形，而图7中示出的散热槽e的截面形状为方形。本领域普通技术人员也可以根据实际需要设置其它形状的散热槽以达到散热效果，这些变型不脱离本公开的保护范围。
本公开的实施例中，由于碳刷筒的内角的位置开设有散热槽，从而使得在碳刷筒的内角的位置累计的热量得以快速释放，避免了碳刷筒的内角处温度过高，降低了碳刷筒的内角处的塑料融化的风险，从而延长了碳刷筒和碳刷的使用寿命。
虽然本公开已以较佳实施例披露如上，但本公开并非限定于此。任何本领域技术人员，在不脱离本公开的精神和范围内所作的各种更动与修改，均应纳入本公开的保护范围内，因此本公开的保护范围应当以权利要求所限定的范围为准。

Claims (7)

  1. 一种碳刷筒，所述碳刷筒的内表面围成用于承载碳刷的空间，其特征在于，在所述碳刷筒的内角的位置开设有散热槽。
  2. 根据权利要求1所述的碳刷筒，其特征在于，所述碳刷筒的内表面的中间位置与所述碳刷接触。
  3. 根据权利要求1所述的碳刷筒，其特征在于，在所述碳刷筒的两个相对的内表面的端部开设有所述散热槽，在所述碳刷筒的另外两个相对的内表面的端部不设置有散热槽，从而使得所述碳刷筒的每个内角的一部分不与所述碳刷接触。
  4. 根据权利要求1所述的碳刷筒，其特征在于，所述碳刷筒的四个内表面的端部均开设有散热槽，从而使得所述碳刷筒的每个内角完全不与所述碳刷接触。
  5. 根据权利要求1所述的碳刷筒，其特征在于，所述散热槽的截面形状为方形。
  6. 根据权利要求1所述的碳刷筒，其特征在于，所述散热槽的截面形状为箭头形。
  7. 一种电机，所述电机包括碳刷和根据权利要求1-6中任一项所述的碳刷筒，所述碳刷筒通过注塑成型设置在所述电机的端盖上。
PCT/CN2016/108680 2015-12-09 2016-12-06 碳刷筒和电机 WO2017097179A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US16/060,393 US20180366895A1 (en) 2015-12-09 2016-12-06 Carbon brush cylinder and motor
MX2018006909A MX2018006909A (es) 2015-12-09 2016-12-06 Soporte de cepillo de carbono y motor electrico.
EP16872370.8A EP3389152A4 (en) 2015-12-09 2016-12-06 COAL BRUSH CYLINDER AND MOTOR
KR1020187015463A KR20180090799A (ko) 2015-12-09 2016-12-06 탄소 브러시 실린더 및 모터

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201521015615.8 2015-12-09
CN201521015615.8U CN205231436U (zh) 2015-12-09 2015-12-09 碳刷筒和电机

Publications (1)

Publication Number Publication Date
WO2017097179A1 true WO2017097179A1 (zh) 2017-06-15

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PCT/CN2016/108680 WO2017097179A1 (zh) 2015-12-09 2016-12-06 碳刷筒和电机

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US (1) US20180366895A1 (zh)
EP (1) EP3389152A4 (zh)
KR (1) KR20180090799A (zh)
CN (1) CN205231436U (zh)
MX (1) MX2018006909A (zh)
WO (1) WO2017097179A1 (zh)

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CN205231436U (zh) * 2015-12-09 2016-05-11 广东肇庆爱龙威机电有限公司 碳刷筒和电机
CN112152036B (zh) * 2020-09-22 2022-03-11 广东韶钢松山股份有限公司 电机碳刷加固方法及电机碳刷

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GB2367193A (en) * 2000-09-20 2002-03-27 Johnson Electric Sa Cooling brushes in a miniature electric motor
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EP3389152A4 (en) 2019-07-03
EP3389152A1 (en) 2018-10-17
US20180366895A1 (en) 2018-12-20
MX2018006909A (es) 2018-11-09
KR20180090799A (ko) 2018-08-13

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