Motor carbon brush holder convenient to mount
By designing removable carbon brush limit parts on the support plate of the motor carbon brush holder, the radial limiting process of carbon brushes is simplified, the problems of complex limiting structure and high cost in the prior art are solved, and the installation is improved Efficiency and convenience.
Patent Information
- Application Number
- CN202420855364.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-24
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-24
AI Technical Summary
The limit structure of existing motor carbon brush holders is complex, has high cost, and has low assembly and disassembly efficiency. Especially when multiple carbon brush boxes are in the case of multiple carbon brush boxes, it is necessary to run through the limit wire one by one, resulting in trouble in installation and disassembly.
The design of a support plate and a carbon brush box is adopted, in which a central hole is provided on the support plate, and the carbon brush box is distributed between the central hole. The carbon brush box is equipped with radially conductive carbon brush channels and springs, and the central hole can be detached. There are carbon brush limiting parts, which include a cylindrical body and an outer flange limiting part for radial limiting, simplifying the installation and disassembly process.
The rapid radial limit of carbon brushes in multiple carbon brush boxes is achieved, the structure is simplified, the assembly efficiency and convenience are improved, the cost is reduced, and the original structure of the carbon brush box and carbon brush is not changed.
Smart Images
Figure CN222169472U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an improved invention of a motor carbon brush holder, in particular to an improved invention of a portable motor carbon brush holder. Background Art
[0002] The carbon brushes of the motor carbon brush holder are installed in the carbon brush box, and the carbon brushes will move toward the center hole in the carbon brush box due to the action of the spring. Therefore, when installing the commutator, the carbon brushes need to be limited. After the commutator is assembled, the limit of the carbon brushes is released so that the carbon brushes abut against the commutator under the action of the spring. The carbon brushes are usually limited by a limit wire passed through the carbon brush box. The corresponding carbon brush box has a passing hole and the carbon brush has a limit groove. Such a structure is complex and costly. When there are multiple carbon brush boxes, each one needs to be individually passed through a limit wire, and they also need to be removed one by one during disassembly, which makes assembly troublesome and inefficient. Utility Model Content
[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a portable motor carbon brush holder with simple structure and efficient installation.
[0004] In order to solve the above technical problems, the utility model is implemented by adopting the following technical solutions: the portable motor carbon brush holder comprises a support plate and a carbon brush box, the support plate is provided with a center hole for the commutator to extend into, the carbon brush box is distributed on the support plate around the center hole at intervals, and the carbon brush box has a radially conductive carbon brush channel, the carbon brush channel is provided with a carbon brush and a spring for driving the carbon brush to move toward the center hole, and is characterized in that: a carbon brush limiter is detachably provided in the center hole, the carbon brush limiter comprises a cylindrical body and a limiter arranged at the lower end of the cylindrical body, the cylindrical body can be matched and embedded in the center hole, the outer circle of the cylindrical body cooperates with the radial limit of the carbon brush, and the limiter cooperates with the axial limit of the outer surface of the support plate.
[0005] The limiting portion is an outer flange arranged at the lower end of the columnar body.
[0006] The cylindrical body is a hollow tube.
[0007] The carbon brush limiting component is an injection molded component.
[0008] The carbon brush boxes are provided with two or four and are circumferentially and evenly spaced on the support plate.
[0009] The beneficial effect of the utility model is that the improved portable motor carbon brush holder can realize radial limiting of the carbon brushes in multiple carbon brush boxes by quickly embedding the carbon brush limiter in the central hole of the support plate. The structure is simple and the installation is convenient, which improves the assembly efficiency and convenience, and there is no need to change the original structure of the carbon brush box and the carbon brush. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.
[0011] Figure 1 It is a structural schematic diagram of the utility model.
[0012] Figure 2 This is a structural diagram of the carbon brush limiter of the utility model. DETAILED DESCRIPTION
[0013] The accompanying drawings show the structure of the utility model, and the relevant details are further described below in conjunction with the accompanying drawings. In this embodiment, the portable motor brush holder includes a support plate 1 and a brush box 2, the support plate 1 is provided with a center hole 3 for the commutator to extend into, the brush box 2 is spaced around the center hole 3 and is distributed on the support plate 1, and the brush box 2 has a radially conductive brush channel, the brush channel is provided with a brush and a spring for driving the brush to move toward the center hole 3, the center hole 3 is detachably provided with a brush stopper 4, the brush stopper 4 includes a cylindrical body 41 and a stopper 42 arranged at the lower end of the cylindrical body 41, the cylindrical body 41 can be matched and embedded in the center hole 3, the outer circle of the cylindrical body 41 is matched with the radial stopper of the brush, and the stopper 42 is matched with the axial stopper of the outer surface of the support plate 1.
[0014] During the installation process of the utility model, after the spring and the carbon brush are installed in the carbon brush box 2, a manual limit is applied to the carbon brush (with the aid of a special tool), and then the cylindrical body 41 of the carbon brush limiter 4 is embedded in the center hole 3 from the outside of the support plate 1 until the limiter 42 contacts the outer surface of the support plate 1. The corresponding carbon brush will abut against the outer circle of the cylindrical body 41 under the action of the spring, thereby realizing the radial limit of the carbon brush. During disassembly, the carbon brush holder is installed at the corresponding position of the motor, and the carbon brush limiter is pulled out from the outside of the support plate to complete the installation of the commutator.
[0015] As a further improved specific implementation, the limiting portion 42 is an outer flange arranged at the lower end of the columnar body 41 , and the outer flange is integrally formed on the columnar body 41 .
[0016] As a further improved specific implementation, the columnar body 41 is a hollow tube, which reduces material usage, saves costs, and allows the motor shaft to pass through.
[0017] As a further improved specific implementation, the carbon brush limiter 4 is an injection molded part, has a certain plasticity, is easy to be embedded in the center hole 3, and is easy to manufacture and reduce costs.
[0018] As a further improved specific implementation, two or four carbon brush boxes 2 are provided and are circumferentially and evenly spaced on the support plate 1 .
[0019] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A portable motor carbon brush holder, comprising a support plate and a carbon brush box, wherein the support plate is provided with a central hole for the commutator to extend into, the carbon brush boxes are spaced around the central hole on the support plate, and the carbon brush box has a radially conductive carbon brush channel, wherein the carbon brush channel is provided with a carbon brush and a spring for driving the carbon brush to move toward the central hole, characterized in that: A carbon brush limiter is removably provided in the center hole, and the carbon brush limiter includes a cylindrical body and a limiter arranged at the lower end of the cylindrical body. The cylindrical body can be matched and embedded in the center hole, the outer circle of the cylindrical body cooperates with the radial limit of the carbon brush, and the limiter cooperates with the axial limit of the outer surface of the support plate.
2. The portable motor carbon brush holder according to claim 1, characterized in that: The limiting portion is an outer flange arranged at the lower end of the columnar body.
3. The portable motor carbon brush holder according to claim 1, characterized in that: The cylindrical body is a hollow tube.
4. The portable motor carbon brush holder according to claim 1, characterized in that: The carbon brush limiting component is an injection molded component.
5. The portable motor carbon brush holder according to claim 1, characterized in that: The carbon brush boxes are provided with two or four and are circumferentially and evenly spaced on the support plate.