A conductive carbon brush structure for motor end cover
By installing conductive carbon brushes on the inner side of the end cover of the aluminum motor and strengthening the structure of the bearing chamber, the problem of the external installation of conductive carbon brushes in the prior art is solved, and a bearing structure with higher strength and longer life is achieved, and noise is reduced.
Patent Information
- Application Number
- CN202421228890.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-05-31
AI Technical Summary
In the prior art, conductive carbon brushes are fixed to the outside of the aluminum end cap, reducing the strength of the bearing chamber. After long-term operation, the bearing chamber deforms, resulting in bearing damage.
A conductive carbon brush structure of the motor end cover is designed. The conductive carbon brush is installed at the bottom of the bearing chamber inside the aluminum end cover, and multiple annular reinforcement ribs are installed in the bearing chamber to improve the overall strength of the end cover body.
By installing conductive carbon brushes on the inside of the end cover, the strength of the bearing chamber is improved, deformation after long-term operation is reduced, the service life of the bearing is extended, and noise is reduced, making it suitable for higher speed operation.
Smart Images
Figure CN222706345U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motor end covers, in particular to a conductive carbon brush structure of a motor end cover. Background Art
[0002] The motor end cover is a part of the motor, usually used to close the end of the motor and protect the internal mechanical structure and electrical components from the external environment.
[0003] A carbon brush is a device that transfers energy or signals between the fixed part and the rotating part of an electric motor, generator or other rotating machinery. It is generally made of pure carbon and a solidifying agent. It is generally square in shape and is stuck on a metal bracket. There is a spring inside to press it tightly against the shaft. When the motor rotates, the electrical energy is transmitted to the coil through the commutator. In order to reduce the weight of the motor and reduce production costs, some motor end covers are usually made of aluminum. At present, the carbon brush assembly is installed on the outside of the aluminum end cover. This structure requires 2 mounting screws to fix the conductive carbon brush to the bearing chamber of the end cover, which reduces the strength of the bearing chamber. After long-term operation, the bearing chamber is deformed, resulting in bearing damage. Therefore, we propose a motor end cover conductive carbon brush structure to solve the above problems. Utility Model Content
[0004] The utility model aims to solve the shortcomings in the prior art that the conductive carbon brush is fixed on the outside of the aluminum end cover, which reduces the strength of the bearing chamber, causes deformation of the bearing chamber after long-term operation, and leads to bearing damage, and proposes a conductive carbon brush structure for the motor end cover.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A motor end cover conductive carbon brush structure comprises an end cover body, wherein a bearing chamber is arranged at the center of the end cover body, an installation cavity is opened at the bottom of the bearing chamber, and a conductive carbon brush is installed in the installation cavity.
[0007] As a preferred technical solution of the utility model, the end cover body is made of aluminum material. The use of aluminum material can reduce the processing cost. At the same time, aluminum material is easier to process than iron material.
[0008] As a preferred technical solution of the utility model, a plurality of reinforcing ribs are arranged inside the end cover body, and the reinforcing ribs are evenly distributed in an annular shape on the outside of the bearing chamber.
[0009] As a preferred technical solution of the utility model, the number of the reinforcing ribs is three to eight, and the overall strength of the end cover body is improved by the reinforcing ribs.
[0010] As a preferred technical solution of the utility model, the installation cavity is concentrically arranged with the bearing chamber, and the outer end of the installation cavity is provided with a chamfer, which is convenient for the installation of the motor shaft and makes the motor shaft fit with the conductive carbon brush.
[0011] The beneficial effects of the utility model are:
[0012] The new type installs the conductive carbon brush at the bottom of the bearing chamber inside the aluminum end cover, thereby ensuring the strength of the bearing chamber, reducing deformation after long-term operation, and increasing the service life of the bearing. At the same time, the motor shaft and the carbon brush rub inside the bearing chamber, which also reduces noise, and this structure is conducive to higher speed operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of a top view of a conductive carbon brush structure for a motor end cover proposed by the utility model;
[0014] Figure 2 for Figure 1 Schematic diagram of the local structure at AA in the middle;
[0015] Figure 3 This is a schematic structural diagram of a front view of a conductive carbon brush structure of a motor end cover proposed by the utility model.
[0016] In the figure: 1. End cover body; 2. Bearing chamber; 3. Conductive carbon brush; 4. Reinforcing rib. DETAILED DESCRIPTION
[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0018] Reference Figure 1-3 A motor end cover conductive carbon brush structure includes an end cover body 1, the end cover body 1 is made of aluminum material, and the use of aluminum material can reduce the processing cost. At the same time, aluminum material is easier to process than iron material;
[0019] Among them, a bearing chamber 2 is arranged at the inner center of the end cover body 1, and the bearing chamber 2 is used to install the end bearing of the motor shaft. At the same time, a plurality of reinforcing ribs 4 are directly arranged on the inner wall of the bearing chamber 2 and the end cover body 1. The number of reinforcing ribs 4 is three to eight. The overall strength of the end cover body 1 is improved by the reinforcing ribs 4. The reinforcing ribs 4 are evenly distributed in a ring shape on the outside of the bearing chamber 2. An installation cavity is opened at the bottom of the bearing chamber 2, and a conductive carbon brush 3 is installed in the installation cavity. Secondly, the installation cavity is concentrically arranged with the bearing chamber 2, and the outer end of the installation cavity is provided with a chamfer, which is convenient for the installation of the motor shaft so that the motor shaft and the conductive carbon brush 3 fit together.
[0020] In this embodiment: by installing the conductive carbon brush 3 at the bottom of the bearing chamber 2, the strength of the bearing chamber 2 is ensured by utilizing this structure. At the same time, the motor shaft and the conductive carbon brush 3 can rub inside the bearing chamber 2, which reduces noise compared to friction outside the end cover body 1, and this structure is conducive to operation at a higher speed.
[0021] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A motor end cover conductive carbon brush structure, comprising an end cover body (1), characterized in that: A bearing chamber (2) is arranged at the center of the end cover body (1), and a mounting cavity is provided at the bottom of the bearing chamber (2), in which a conductive carbon brush (3) is installed.
2. A motor end cover conductive carbon brush structure according to claim 1, characterized in that: The end cover body (1) is made of aluminum material.
3. A motor end cover conductive carbon brush structure according to claim 1, characterized in that: A plurality of reinforcing ribs (4) are arranged inside the end cover body (1), and the reinforcing ribs (4) are evenly distributed in an annular shape on the outside of the bearing chamber (2).
4. A motor end cover conductive carbon brush structure according to claim 3, characterized in that: The number of the reinforcing ribs (4) is three to eight.
5. The motor end cover conductive carbon brush structure according to claim 1, characterized in that: The installation cavity is arranged concentrically with the bearing chamber (2), and the outer end of the installation cavity is provided with a chamfer.