Motor end cover

Abstract

The utility model discloses a motor end cover, which comprises an end cover main body and an electric brush, the end cover is provided with a fixing groove for fixing the electric brush, the motor end cover also comprises an electric brush lead sheet, the electric brush lead sheet and the electric brush are jointed and connected and then are clamped into the fixing groove, the bottom of the fixing groove is provided with a through groove extending to the surface of the end cover, and the through groove is provided with a through hole. And the electric brush lead sheet is provided with an extension end extending out of the through groove. The end cover is provided with the fixing groove, and the electric brush lead sheet and the electric brush are clamped into the fixing groove after being attached and connected, so that the installation of the electric brush is simpler and faster, and meanwhile, the connection stability and the electric connectivity between the electric brush and the electric brush are ensured. The extension end of the electric brush lead sheet extends out of the through groove at the bottom of the fixing groove, so that electrical connection and testing are facilitated, and automatic assembly and testing are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of motor accessories, and particularly to a motor end cover. Background Art

[0002] In a motor, a brush is an important component, which is responsible for introducing the current of an external power supply into the rotating part (such as a rotor) of the motor, thereby realizing the transmission of current. In the traditional design of a motor end cover, the brush is usually installed on a fixed brush holder and connected to an external circuit through a lead wire. For example, in a previous application of our company, the application number is 2018210161906, a disclosed end cover with a brush. However, the brush of this kind of end cover is led out and connected through a lead wire from a through hole. During the commissioning stage of the motor, it is necessary to conduct connection tests on the lead wires of the brush. The traditional method usually uses alligator clips to clamp the lead wires respectively for testing. This method is not only time-consuming but also inefficient and difficult to achieve automated operation.

[0003] Therefore, this application improves the structure of the cover body and the brush piece, and proposes an improved motor end cover. Utility Model Content

[0004] Aiming at the deficiencies in the background art, the present utility model provides a motor end cover.

[0005] The technical solution adopted by the present utility model is: a motor end cover, including an end cover body and a brush. A fixing groove for fixing the brush is provided on the end cover, and a brush lead piece is further included. After the brush lead piece is attached to the brush, they are together clamped into the above-mentioned fixing groove. The bottom of the fixing groove has a through groove extending to the surface of the end cover, and the brush lead piece has an extending end extending out from the through groove.

[0006] Further, four positioning notches are equidistantly arranged on the outer circle of the end cover surface, and the extending end is located within the positioning notch.

[0007] Further, the vertex of the extending end is lower than the surface of the end cover, and the vertex of the extending end is higher than the bottom surface of the positioning notch.

[0008] Further, the distance from the vertex of the extending end to the surface of the end cover is 0.1 - 1 cm.

[0009] Further, the distance between the vertex of the extending end and the bottom surface of the positioning notch is 0.3 - 1.5 cm.

[0010] Further, reinforcing ribs are provided on the end cover body outside the positioning notch.

[0011] Further, the brush lead piece includes an integrally formed fixing piece and the above-mentioned extending end, and guiding inclined surfaces are provided on the four side walls at the top of the extending end.

[0012] Furthermore, the fixing piece is attached to the fixing part of the carbon brush. A connection hole is provided on the fixing part of the carbon brush, and a connection stud for connecting into the above connection hole is provided on the fixing piece.

[0013] Furthermore, after the connection stud passes through the connection hole, a part of it protrudes from the surface of the fixing part of the carbon brush, and a groove for engaging with the connection stud protruding from the surface of the fixing part is provided on the side wall of the fixing groove.

[0014] Furthermore, both the connection stud and the connection hole are two.

[0015] The beneficial effects of the present utility model are as follows:

[0016] 1. Simplify the debugging process: By providing an extension end that extends out of the surface of the end cover body in this application as a connection point for the automated tooling, it is no longer necessary to use alligator clips to clamp the leads one by one. Instead, the test can be directly carried out by using the working point on the extension end. This method greatly simplifies the debugging steps, facilitates the realization of automated assembly and testing, improves the debugging efficiency, and reduces the debugging time.

[0017] 2. Enhance the reliability of electrical connection: After the carbon brush lead piece is attached to the carbon brush and then the two are snapped into the fixing groove together, it ensures good electrical contact between the two. The design of the fixing groove ensures the stable positions of the carbon brush and the lead piece, avoiding loosening or falling off caused by vibration or other factors, and enhancing the reliability of the electrical connection.

[0018] 3. Improve the heat dissipation performance: The extension end of the carbon brush lead piece can extend out from the through groove on the surface of the end cover, which helps with heat dissipation. It increases the air circulation space, contributes to the overall thermal management of the motor, and prolongs the service life of the carbon brush.

[0019] 4. Reduce costs: By simplifying the installation and debugging process, the labor cost and time cost are reduced.

[0020] In addition to the purposes, features, and advantages described above, the present utility model has other purposes, features, and advantages. The following will refer to the accompanying drawings for a further detailed description of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the present utility model.

[0022] Figure 2 is a schematic diagram of another perspective of the present utility model.

[0023] Figure 3 is a schematic connection diagram of the carbon brush and the carbon brush lead.

[0024] Figure 4 is a schematic structural diagram of the end cover body.

[0025] Figures 1-4 In the figure: 1. End cover body; 2. Brush; 3. Fixed groove; 4. Brush lead piece; 7. Through groove; 8. Extension end; 9. Positioning notch; 10. Reinforcing rib; 11. Fixed piece; 13. Introduction bevel; 14. Connecting hole; 15. Connecting stud; 16. Groove. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0028] The present utility model provides a motor end cover.

[0029] In this embodiment, referring to Figures 1-4 , this motor end cover includes an end cover body 1 and a brush 2. A fixed groove 3 for fixing the brush is provided on the end cover. It also includes a brush lead piece 4. After the brush lead piece 4 is attached to the brush, they are together clamped into the above-mentioned fixed groove 3. The bottom of the fixed groove 3 has a through groove 7 extending to the surface of the end cover, and the brush lead piece has an extension end 8 extending out from the through groove 7.

[0030] In the above technical solution, by providing a fixed groove on the end cover and clamping the brush lead piece and the brush together into the fixed groove after they are attached, the installation of the brush is made simpler and faster, while ensuring the connection stability and electrical connectivity between the two. The extension end of the brush lead piece extends out from the through groove at the bottom of the fixed groove, which is convenient for electrical connection and testing, and is also convenient for automated assembly and testing.

[0031] Specifically, four positioning notches 9 are equally spaced on the outer circle of the end cover surface, and the extension end is located within the positioning notch.

[0032] In this embodiment, four positioning notches are equally spaced on the outer circle of the end cover surface. The positioning notches are used for positioning and assembling with the motor housing to ensure accurate alignment between the end cover and the motor housing. At the same time, the positioning notches are used to position the extension end, without major modification to the original cover body.

[0033] Specifically, the vertex of the extension end is lower than the surface of the end cover and higher than the bottom surface of the positioning notch.

[0034] In this embodiment, the vertex of the extension end is lower than the surface of the end cover and lower than the bottom surface of the positioning notch. This can prevent external objects from accidentally contacting the brush lead piece, protect the brush lead piece from damage, and at the same time reduce electrical connection problems caused by collisions.

[0035] Specifically, the distance between the vertex of the extension end and the surface of the end cover is 0.1 - 1 cm.

[0036] In this embodiment, the distance between the vertex of the extension end and the surface of the end cover is 0.1 - 1 cm. Such a design not only ensures the electrical connection requirements of the brush lead piece but also avoids the risk of interference or damage that may be caused by excessive protrusion, balancing functionality and safety.

[0037] Specifically, the distance between the vertex of the extension end and the bottom surface of the positioning notch is 0.3 - 1.5 cm.

[0038] In this embodiment, the distance between the vertex of the extension end and the bottom surface of the positioning notch is 0.3 - 1.5 cm. Such a design further optimizes the protruding length of the brush lead piece, ensures sufficient protection without affecting electrical connection, and is convenient for the contact of the tooling point to point.

[0039] Specifically, a reinforcing rib 10 is provided on the end cover body outside the outer ring of the positioning notch 9.

[0040] In this embodiment, a reinforcing rib is provided on the end cover body outside the outer ring of the positioning notch, enhancing the overall structural strength of the end cover, improving durability and impact resistance, and extending the service life of the motor end cover.

[0041] Specifically, the brush lead piece includes an integrally formed fixing piece 11 and the above-mentioned extension end 8, and guiding inclined surfaces 13 are provided on the four side walls at the top of the extension end.

[0042] In this embodiment, the brush lead piece includes an integrally formed fixing piece and an extension end, and guiding inclined surfaces are provided on the four side walls at the top of the extension end. Such a design facilitates the insertion, installation, and positioning of the brush lead piece, and at the same time the guiding inclined surfaces help to reduce the friction force during the installation process and simplify the installation steps.

[0043] Specifically, the fixing piece is fitted to the fixing part of the brush, a connection hole 14 is provided on the fixing part of the brush, and a connection stud 15 for connecting to the above-mentioned connection hole is provided on the fixing piece.

[0044] In this embodiment, a connection stud is provided on the fixing piece. Through the cooperation of the connection stud and the connection hole on the fixing part of the brush, a firm connection between the brush and the brush lead piece is achieved, enhancing the reliability of the electrical connection.

[0045] Specifically, after the connecting convex post 15 passes through the above-mentioned connecting hole 14, a part of it protrudes from the surface of the fixing part of the brush, and a groove 16 that engages with the connecting convex post 15 protruding from the surface of the fixing part is provided on the side wall of the fixing groove.

[0046] In this embodiment, the connecting convex post passes through the connecting hole and a part of it protrudes from the surface of the fixing part of the brush, and engages with the groove on the side wall of the fixing groove, further enhancing the mechanical connection strength between the brush lead piece and the brush, and avoiding the loosening problem that may occur during the operation of the motor.

[0047] Specifically, both the connecting convex post and the connecting hole are two.

[0048] In this embodiment, both the connecting convex post and the connecting hole are two. Such a design ensures the double fixation between the brush lead piece and the brush, improves the stability and reliability of the connection, and reduces the risk of unstable connection caused by single-point connection.

[0049] All technicians should note that although the present utility model has been described according to the above specific embodiments, the idea of the present utility model is not limited to this utility model only. Any modification using the idea of the present utility model will be included in the scope of protection of this patent right.

Claims

1. A motor end cover, comprising an end cover body and a brush, wherein the end cover is provided with a fixing groove for fixing the brush, characterized in that: It also includes a brush lead, which is inserted into the fixing groove after being fitted and connected with the brush. The bottom of the fixing groove has a through groove extending to the surface of the end cover, and the brush lead has an extended end extending from the through groove.

2. The motor end cover according to claim 1, characterized in that: Four positioning notches are arranged at equal intervals on the outer circle of the surface of the end cover, and the extension end is located in the positioning notches.

3. The motor end cover according to claim 2, characterized in that: The apex of the extension end is lower than the surface of the end cover, and the apex of the extension end is higher than the bottom surface of the positioning notch.

4. The motor end cover according to claim 3, characterized in that: The vertex of the extension end is 0.1-1 cm away from the surface of the end cover.

5. The motor end cover according to claim 3, characterized in that: The distance between the vertex of the extension end and the bottom surface of the positioning notch is 0.3-1.5 cm.

6. The motor end cover according to claim 2, characterized in that: A reinforcing rib is provided on the end cover body of the outer circle of the positioning notch.

7. The motor end cover according to claim 1, characterized in that: The brush lead piece comprises an integrally formed fixing piece and the above-mentioned extension end, and the four side walls of the top of the extension end are provided with introduction inclined surfaces.

8. The motor end cover according to claim 7, characterized in that: The fixing plate is fitted with a fixing portion of the brush, a connecting hole is arranged on the fixing portion of the brush, and a connecting boss connected to the connecting hole is arranged on the fixing plate.

9. The motor end cover according to claim 8, characterized in that: The connecting protrusion passes through the connecting hole and partially protrudes from the surface of the fixing part of the brush. The side wall of the fixing groove is provided with a groove which engages with the connecting protrusion protruding from the surface of the fixing part.

10. The motor end cover according to claim 8, characterized in that: There are two connecting bosses and two connecting holes.

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