Motor capable of dissipating heat of carbon brush

Abstract

The utility model provides a motor capable of dissipating heat of a carbon brush. The problems that an existing carbon brush is packaged on a carbon brush holder and buckled on the outer side of the carbon brush through a machine shell, independent heat dissipation is carried out only through a heat dissipation opening in the bottom of the shell in the using process, the heat dissipation effect is poor, and the carbon brush is prone to being damaged when the carbon brush is used in a high-temperature environment for a long time are solved. The motor comprises a casing, a stator, a rotor and a brush holder, the stator and the rotor are arranged in the casing, the brush holder is used for mounting a carbon brush, an opening directly facing the brush holder is arranged on the side wall of the casing, an ear cover is fastened at the opening, an air outlet directly facing the brush holder is arranged on the ear cover, and the opening directly facing the carbon brush is additionally arranged on the casing. According to the utility model, air is discharged through the ear cover buckled on the opening, and in the use process, a part of airflow driven by the fan in the motor flows out from the air outlet on the ear cover and dissipates heat of the carbon brush, so that a good working environment of the carbon brush can be effectively kept.

Description

Technical Field

[0001] The utility model relates to the technical field of electric tools, in particular to a motor for dissipating heat from a carbon brush. Background Art

[0002] Micro motors are small in size and capacity, with output power generally below several hundred watts, and special requirements for use, performance and environmental conditions. When the motor is running, the carbon brushes will wear out due to long-term operation. However, the current carbon brushes are all encapsulated and cannot be replaced. In order to ensure stability during operation, the carbon brushes are usually encapsulated in the carbon brush holder and snapped onto the outside of the carbon brush through the housing. During use, the heat is only dissipated through the heat dissipation port at the bottom of the housing. The heat dissipation effect is poor. When used in a high temperature environment for a long time, the carbon brushes are easily damaged. There is room for improvement in the existing technology. Summary of the invention

[0003] In view of the above-mentioned existing situation, the utility model provides a motor for dissipating heat of carbon brushes, comprising a casing, a stator and a rotor arranged in the casing, and a brush holder for installing the carbon brushes, characterized in that an opening facing the brush holder is provided on the side wall of the casing, an ear cover is fastened at the opening, an air outlet facing the brush holder is provided on the ear cover, a plurality of dustproof rods are respectively arranged in the air outlet, two adjacent dustproof rods are not located in the same horizontal direction and are not located in the same vertical direction, and a certain gap is left between the two adjacent dustproof rods in the horizontal direction.

[0004] Preferably, an inserting plate for inserting into the casing and positioning the ear cover is fixedly provided at one end of the ear cover facing the casing.

[0005] Preferably, the plug board is U-shaped.

[0006] Preferably, a plurality of studs for mounting the ear covers are fixedly disposed in the housing, and a plurality of screw holes matching with the studs are provided on the ear covers.

[0007] Preferably, a buckle plate for buckling on the lower end of the casing is fixedly provided at the bottom of the ear cover.

[0008] Compared with the prior art, in the utility model, an additional opening facing the carbon brush is opened on the casing, and air is discharged through an ear cover that is snapped on the opening. During use, a part of the airflow driven by the fan in the motor flows out from the air outlet on the ear cover and dissipates the heat for the carbon brush, thereby effectively maintaining a good working environment for the carbon brush. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is the overall structural view of the utility model;

[0010] Figure 2 This is an exploded view of the structure of the utility model;

[0011] Figure 3 It is a schematic diagram of the overall structure of the ear cover;

[0012] Figure 4 This is a cutaway view of the ear cover.

[0013] Markings in the figure: 1. Casing; 2. Brush holder; 3. Opening; 4. Ear cover; 5. Air outlet; 6. Dustproof rod; 7. Insert plate; 8. Stud; 9. Screw hole; 10. Buckle plate. DETAILED DESCRIPTION

[0014] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings:

[0015] like Figure 1-4 As shown, a motor for heat dissipation of carbon brushes comprises a housing 1, a stator and a rotor arranged in the housing 1, and a brush holder 2 for installing carbon brushes, an opening 3 facing the brush holder 2 is opened on the side wall of the housing 1, an ear cover 4 is buckled on the opening 3, an air outlet 5 facing the brush holder 2 is opened on the ear cover 4, and a plurality of dustproof rods 6 are respectively arranged in the air outlet 5, two adjacent dustproof rods 6 are not located in the same horizontal direction and are not located in the same vertical direction, a certain gap is left between two adjacent dustproof rods 6 along the horizontal direction, and adjacent dustproof rods 6 are arranged alternately in sequence, which can effectively block external particles and impurities while ventilating. By opening an additional opening 3 facing the carbon brush on the housing 1, and discharging air through the ear cover 4 buckled on the opening 3, during use, a part of the airflow driven by the fan in the motor flows out from the air outlet 5 on the ear cover 4, and dissipates heat for the carbon brush, which can effectively maintain a good working environment for the carbon brush.

[0016] The ear cover 4 is fixedly provided with an insert plate 7 for inserting into the casing 1 and for positioning the ear cover 4 at one end thereof facing the casing 1. The insert plate 7 is U-shaped. A plurality of studs 8 for installing the ear cover 4 are fixedly provided in the casing 1, and a plurality of screw holes 9 for matching with the studs 8 are provided on the ear cover 4. A buckle plate 10 for buckling with the lower end of the casing 1 is fixedly provided at the bottom of the ear cover 4. During installation, the insert plate 7 is inserted into the casing 1 and buckled with the bottom of the casing 1. At this time, the screw holes 9 on the ear cover 4 face the studs 8 in the casing 1, and the fixation can be completed by tightening the screws in the screw holes 9.

[0017] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A motor for dissipating heat from a carbon brush, comprising a housing (1), a stator and a rotor arranged in the housing (1), and a brush holder (2) for mounting the carbon brush, characterized in that: An opening (3) facing the brush holder (2) is provided on the side wall of the housing (1); an ear cover (4) is buckled at the opening (3); an air outlet (5) facing the brush holder (2) is provided on the ear cover (4); a plurality of dustproof rods (6) are respectively arranged in the air outlet (5); two adjacent dustproof rods (6) are not located in the same horizontal direction and are not located in the same vertical direction; and a certain gap is left between the two adjacent dustproof rods (6) in the horizontal direction.

2. A motor for dissipating heat from carbon brushes according to claim 1, characterized in that: An inserting plate (7) for inserting into the casing (1) and for positioning the ear cover (4) is fixedly provided at one end of the ear cover (4) facing the casing (1).

3. A motor for dissipating heat from carbon brushes according to claim 2, characterized in that: The inserting plate (7) is U-shaped.

4. A motor for dissipating heat from carbon brushes according to claim 1, characterized in that: A plurality of studs (8) for mounting the ear covers (4) are fixedly arranged in the housing (1), and a plurality of screw holes (9) matching the studs (8) are provided on the ear covers (4).

5. The motor for dissipating heat from carbon brushes according to claim 1, characterized in that: A buckle plate (10) is fixedly provided at the bottom of the ear cover (4) and is used for buckling onto the lower end of the housing (1).

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