Protective cover of electric brush shell

Abstract

The utility model relates to the technical field of motors, in particular to an electric brush shell protection cover which is installed on a motor end cover, an electric brush and a bolt connected with a motor body are arranged on the motor end cover, a sinking groove for installing the bolt is formed in the end face of the motor end cover, the electric brush shell protection cover comprises a cover shell body, and the cover shell body is in an annular hoop shape. The housing body is provided with ribs correspondingly embedded in the sinking grooves and a cover cap correspondingly covering the electric brush, the ribs are in interference fit with the sinking grooves, and the cover cap protects the side faces and the end faces of the electric brush. The electric brush shell protection cover is in interference fit with the sinking groove for installing the bolt on the existing motor end cover through the convex ribs, the cover shell body and the motor end cover are fastened, assembly and disassembly are convenient, the electric brush is covered through the cover cap, the electric brush is effectively prevented from being damaged by external force, the existing motor structure does not need to be changed, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a brush housing protective cover. Background Art

[0002] The brush is an important component of the brushed motor, responsible for conducting current between the rotating parts and the stationary parts. The brush is mostly installed on the commutator or slip ring, and is a sliding contact body, so the brush is a consumable part. In order to facilitate the replacement and wiring of the brush, the brush is generally installed on the end cover of the motor, and may even be exposed to the outside, which inevitably causes the brush to be damaged after being subjected to force.

[0003] In this regard, it is hoped to design a protective cover for the motor, but the installation of a protective cover may complicate the motor structure and affect the motor performance. In addition, the original motor casing may need to be adaptively modified. The installation cost is high and difficult, and the protection effect is average. Therefore, the protective cover needs to be optimized in design. Utility Model Content

[0004] Based on the above problems, the purpose of the utility model is to provide a brush housing protective cover, so as to be more suitable for existing motors and provide better protection for motor brushes.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A brush housing protective cover is installed on a motor end cover. The motor end cover is provided with brushes and bolts connected to the motor body. A recessed groove for installing the bolts is formed on the end face of the motor end cover. The brush housing protective cover includes a cover body. The cover body is in the shape of an annular hoop. The cover body is provided with convex ridges corresponding to those embedded in the recessed grooves and a cover corresponding to those covering the brushes. The convex ridges are interference fit with the recessed grooves. The cover protects the side and end faces of the brushes.

[0007] Preferably, the motor end cover is in a truncated cone shape, and the side wall curved surface of the housing body is adapted to the truncated cone surface.

[0008] Preferably, the recessed groove forms a notch on the side of the motor end cover, and the convex ridge is formed on the inner surface of the side wall of the housing body.

[0009] Preferably, the side surface of the cover is a force-bearing surface, a concave-convex surface is arranged on the force-bearing surface, and the brush is correspondingly located on the concave back side of the concave-convex surface.

[0010] Preferably, the housing body, the ridges and the cover are integrally formed by injection molding.

[0011] Preferably, two bolts and two brushes are provided respectively, and the two bolts and the two brushes are distributed in a cross shape on the end surface of the motor end cover, and the two ridges and the two covers are also distributed in a cross shape accordingly.

[0012] The beneficial effects of the utility model are as follows: the brush housing protective cover has an interference fit with the recessed groove of the mounting bolt on the existing motor end cover through the convex ridge, so that the cover body and the motor end cover are fastened together, which is convenient for assembly and disassembly, and the brush position is covered by the cover, which effectively prevents the brush from being damaged by external forces, and there is no need to change the existing motor structure, so the application range is wide. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the brush housing protective cover provided by the embodiment of the utility model;

[0014] Figure 2 It is a schematic diagram of the assembly of the brush housing protective cover and the motor provided by the embodiment of the utility model;

[0015] Figure 3 yes Figure 2 End view of .

[0016] In the attached figure:

[0017] 1. Shell body; 2. Raised ridges; 3. Cover; 4. Concave and convex surfaces;

[0018] 10. Motor end cover; 11. Sink; 12. Brush. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0020] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0022] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0023] See also Figures 1 to 3 As shown, this preferred embodiment provides a brush housing protective cover, which is installed on the motor end cover 10. The existing motor end cover 10 is provided with brushes 12 and bolts connected to the motor body, and a recessed groove 11 for installing the bolts is formed on the end surface of the motor end cover 10.

[0024] The brush housing protective cover comprises a housing body 1, which is in the shape of an annular hoop. The housing body 1 is provided with a ridge 2 corresponding to the recessed groove 11 and a cover 3 corresponding to the brush 12. The ridge 2 is interference fit with the recessed groove 11, and the cover 3 protects the side and end faces of the brush 12.

[0025] Therefore, the brush housing protective cover is interference fit with the recessed groove 11 of the mounting bolt on the existing motor end cover 10 through the convex ridge 2, so that the cover body 1 and the motor end cover 10 are fastened, which is convenient for assembly and disassembly, and then the position of the brush 12 is covered by the cover 3, which effectively prevents external force from damaging the brush 12, without changing the existing motor structure, and has a wide range of applications.

[0026] In particular, the motor end cover 10 is in a truncated cone shape, and the side wall curved surface of the casing body 1 is adapted to the truncated cone surface, so as to better fit the surface of the motor end cover 10 and facilitate the casing body 1 to be clamped on the motor end cover 10 .

[0027] In particular, the recessed groove 11 forms a notch on the side of the motor end cover 10 , and the ridge 2 is formed on the inner surface of the side wall of the housing body 1 , so that the ridge 2 is designed to cooperate with the recessed groove 11 to form a tight fit.

[0028] Preferably, the side surface of the cover 3 is a force-bearing surface, and a concave-convex surface 4 is provided on the force-bearing surface. The brush 12 is correspondingly located on the concave back side of the concave-convex surface 4. Even if the cover 3 is hit, the convex surface of the concave-convex surface 4 absorbs the impact force first, thereby further protecting the brush 12.

[0029] In particular, the housing body 1, the ridge 2 and the cover 3 are formed into one piece by injection molding, so the processing cost is low and the brush housing protective cover is light in weight as a whole.

[0030] In this embodiment, two bolts and two brushes 12 are respectively provided, and the two bolts and the two brushes 12 are distributed in a cross shape on the end surface of the motor end cover 10, and the two ridges 2 and the two covers 3 are also distributed in a cross shape accordingly, so that the structural design of the cover body 1 is more reasonable and the force is more uniform.

[0031] The above embodiments are only to illustrate the basic principles and characteristics of the utility model. The utility model is not limited by the above embodiments. Without departing from the spirit and scope of the utility model, the utility model has various changes and modifications, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A brush housing protective cover, mounted on a motor end cover (10), the motor end cover (10) being provided with a brush (12) and a bolt connected to a motor body, a recessed groove (11) for mounting the bolt being formed on an end surface of the motor end cover (10), characterized in that: The brush housing protective cover comprises a housing body (1), the housing body (1) is in the shape of an annular hoop, the housing body (1) is provided with a ridge (2) correspondingly embedded in the recessed groove (11) and a cover (3) correspondingly covering the brush (12), the ridge (2) and the recessed groove (11) are interference fit, and the cover (3) protects the side and end faces of the brush (12).

2. The brush housing protective cover according to claim 1, characterized in that: The motor end cover (10) is in the shape of a truncated cone, and the side wall curved surface of the housing body (1) is adapted to the truncated cone surface.

3. The brush housing protective cover according to claim 1, characterized in that: The sink groove (11) forms a notch on the side of the motor end cover (10), and the ridge (2) is formed on the inner surface of the side wall of the housing body (1).

4. The brush housing protective cover according to claim 1, characterized in that: The side surface of the cover (3) is a force-bearing surface, a concave-convex surface (4) is provided on the force-bearing surface, and the brush (12) is located correspondingly on the concave back side of the concave-convex surface (4).

5. The brush housing protective cover according to claim 1, characterized in that: The housing body (1), the ridge (2) and the cover (3) are integrally formed by injection molding.

6. The brush housing protective cover according to claim 1, characterized in that: Two of the bolts and two of the brushes (12) are provided respectively, and the two bolts and the two brushes (12) are distributed in a cross shape on the end surface of the motor end cover (10), and the two ridges (2) and the two covers (3) are also distributed in a cross shape accordingly.

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