Motor brush holder assembly with sealing structure

Abstract

The utility model relates to the technical field of motor brush holder assemblies, in particular to a motor brush holder assembly with a sealing structure, which comprises a brush holder shell, a plurality of groups of connecting screw holes are arranged in the brush holder shell, a sealing ring is arranged at the top of the brush holder shell along the edge, and sealing soft rubber is arranged in the sealing ring. A plurality of sets of bosses are arranged at the positions, tightly attached to the inner wall, in the brush carrier shell, sealing short rods are fixed to the tops of the bosses, spring assemblies are arranged on the middle sections of the sealing short rods, and the top ends of the multiple sets of sealing short rods are jointly connected with a stress pressing plate. The whole structure well improves the sealing performance of the brush holder shell.

Description

Technical Field

[0001] The utility model relates to the technical field of motor brush holder components, in particular to a motor brush holder component with a sealing structure. Background Art

[0002] Generally, in small motors, sealing rings need to be installed between the motor brush holder and the metal shell of the motor part, as well as between the gear box of the output part, so that the connection between the upper and lower parts is sealed to achieve a sealing and waterproof effect.

[0003] However, the existing motor brush holder sealing structure is simple and the sealing effect achieved is limited.

[0004] Therefore, it is particularly important to design a motor brush holder assembly with a sealed structure to change the above technical defects and improve overall practicality. Utility Model Content

[0005] The purpose of the present utility model is to provide a motor brush holder assembly with a sealing structure to solve the problems raised in the above background technology.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A motor brush holder assembly with a sealing structure includes a brush holder shell, multiple groups of connecting screw holes are opened inside the brush holder shell, a sealing ring is provided at the top and along the edge of the brush holder shell, a sealing soft rubber is provided inside the sealing ring, and multiple groups of bosses are provided inside the brush holder shell and close to the inner wall, a sealing short rod is fixed on the top of the boss, the middle section of the sealing short rod is set as a spring assembly, and the top ends of multiple groups of the sealing short rods are commonly connected to a stress pressure plate.

[0008] As a preferred solution of the present invention, there are four groups of connecting screw holes, which are distributed in a matrix on the inner side of the brush holder housing.

[0009] As a preferred solution of the present invention, an annular groove for fixing the sealing soft glue is opened inwardly at the top of the sealing ring, and the sealing ring and the sealing soft glue are designed to be detachable.

[0010] As a preferred solution of the present invention, the sealing soft glue adopts a sealing rubber ring with an annular structure.

[0011] As a preferred solution of the present invention, the bosses are provided in four groups in total and are distributed in a matrix on the inner side wall of the brush holder housing.

[0012] As a preferred solution of the present invention, the stress pressure plate is designed as a flat annular structure.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] In the utility model, a motor brush holder assembly with a sealing structure is provided, a group of sealing rings are added along the edge of the top of the brush holder shell, and a sealing soft glue protruding upward is embedded in the inside of the sealing ring. When the brush holder shell is connected, it is connected to the metal shell of the motor part by inserting the bolt into the connecting screw hole. At this time, the sealing ring is in close contact with the surface of the metal shell, and the sealing soft glue ensures the sealing of the contact part. After the connection, the spring assembly of the middle section of the sealing short rod on the boss will drive the stress pressure plate and the metal shell surface to form an extrusion force under the action of elastic potential energy, form a counterstress with the bolt, increase the tightness of the bolt, thereby reducing the possibility of loosening of the brush holder shell, and the entire structure greatly improves the sealing of the brush holder shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the partial structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the local structure of the utility model.

[0018] In the figure: 1. Brush holder housing; 2. Connecting screw hole; 3. Sealing ring; 301. Sealing soft rubber; 4. Boss; 401. Sealing short rod; 402. Spring assembly; 403. Stress pressure plate. DETAILED DESCRIPTION

[0019] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are for the purpose of describing specific embodiments only and are not intended to limit this invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0023] For examples, see Figure 1-3 , the utility model provides a technical solution:

[0024] A motor brush holder assembly with a sealing structure includes a brush holder housing 1, wherein the interior of the brush holder housing 1 is provided with multiple groups of connecting screw holes 2, a sealing ring 3 is provided at the top of the brush holder housing 1 and along the edge, a sealing soft rubber 301 is provided inside the sealing ring 3, and multiple groups of bosses 4 are provided inside the brush holder housing 1 and close to the inner wall, a sealing short rod 401 is fixed to the top of the boss 4, the middle section of the sealing short rod 401 is provided with a spring assembly 402, and the tops of the multiple groups of sealing short rods 401 are commonly connected to a stress pressure plate 403. After connection, the spring assembly 402 in the middle section of the sealing short rod 401 on the boss 4 will drive the stress pressure plate to form an extrusion force with the surface of the metal shell under the action of elastic potential energy, form a counterforce with the bolt, improve the tightness of the bolt, and thus reduce the possibility of loosening of the brush holder housing;

[0025] There are four groups of connecting screw holes 2, which are distributed in a matrix on the inner side of the brush holder housing 1. An annular groove is provided inward at the top of the sealing ring 3 for fixing the sealing soft glue 301. The sealing ring 3 and the sealing soft glue 301 are designed as a detachable structure. The sealing soft glue 301 adopts a sealing rubber ring with an annular structure. There are four groups of bosses 4, which are distributed in a matrix on the inner wall of the brush holder housing 1. The stress pressure plate 403 is a flat annular structure design.

[0026] The working process of the utility model is as follows: a group of sealing rings 3 are added along the edge of the top of the brush holder housing 1, and an upwardly protruding sealing soft glue 301 is embedded in the inside of the sealing ring 3. When the brush holder housing 1 is connected, it is connected to the metal shell of the motor part by inserting the bolt into the connecting screw hole 2. At this time, the sealing ring 3 is in close contact with the surface of the metal shell, and the sealing soft glue 301 ensures the sealing of the contact part. After the connection, the spring assembly 402 in the middle section of the sealing short rod 401 on the boss 4 will drive the stress pressure plate to form an extrusion force with the metal shell surface under the action of elastic potential energy, form a counterstress with the bolt, increase the tightness of the bolt, thereby reducing the possibility of loosening of the brush holder housing, and the entire structure greatly improves the sealing of the brush holder housing.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A motor brush holder assembly with a sealed structure, comprising a brush holder housing (1), characterized in that: The brush holder housing (1) is provided with a plurality of connecting screw holes (2) inside, a sealing ring (3) is provided at the top and along the edge of the brush holder housing (1), a sealing soft glue (301) is provided inside the sealing ring (3), a plurality of bosses (4) are provided inside the brush holder housing (1) and close to the inner wall, a sealing short rod (401) is fixed on the top of the boss (4), the middle section of the sealing short rod (401) is provided as a spring assembly (402), and the top ends of the plurality of sealing short rods (401) are connected to a stress pressure plate (403) in common.

2. The motor brush holder assembly with a sealing structure according to claim 1, characterized in that: The connecting screw holes (2) are provided in four groups in total and are distributed in a matrix on the inner side of the brush holder housing (1).

3. The motor brush holder assembly with a sealing structure according to claim 1, characterized in that: An annular groove for fixing the sealing soft glue (301) is provided inwardly at the top of the sealing ring (3), and the sealing ring (3) and the sealing soft glue (301) are designed to be detachable.

4. The motor brush holder assembly with a sealing structure according to claim 1, characterized in that: The sealing soft rubber (301) is a sealing rubber ring with an annular structure.

5. The motor brush holder assembly with a sealing structure according to claim 1, characterized in that: The bosses (4) are provided in four groups in total and are distributed in a matrix on the inner side wall of the brush holder housing (1).

6. The motor brush holder assembly with a sealing structure according to claim 1, characterized in that: The stress pressing plate (403) is designed as a flat annular structure.

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