Waterproof sealing structure of permanent magnet direct current motor

Abstract

The utility model discloses a waterproof sealing structure of a permanent magnet direct current motor. The waterproof sealing structure comprises a shell, a sealing cover and a sealing cover, radiating fins and a sealing bearing are arranged on the shell, a sealing junction box and a sealing bearing are arranged on the sealing cover, and a first extension part and a second extension part are arranged on the sealing cover; the heat dissipation fins are annularly arranged along the outer wall of the shell, the sealing bearing is located in the center of one end of the shell, the sealing cover is installed at the other end of the shell, and the sealing junction box is located on the upper surface of the sealing cover. The first extending part and the second extending part are located on the surface of the side, close to the sealing cover, of the sealing cover. The waterproof motor is reasonable in design, the first extension part is in threaded connection with the sealing cover, and the second extension part is in threaded connection with the annular clamping edge, so that the interior of the motor is sealed, the waterproof effect is achieved, the waterproof motor can be used in some places with relatively high air humidity, and the problems of electric leakage and the like are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of permanent magnet DC motors, in particular to a waterproof and sealing structure for a permanent magnet DC motor. Background Art

[0002] Permanent magnet DC motors can be divided into permanent magnet brushless DC motors and permanent magnet brushed DC motors according to whether they have brushes. A permanent magnet DC motor is a kind of DC motor that uses permanent magnets to establish a magnetic field. Permanent magnet DC motors are widely used in various portable electronic devices or appliances, such as tape recorders, VCD players, record players, electric massagers and various toys. They are also widely used in industries such as automobiles, motorcycles, hand dryers, electric bicycles, battery vehicles, ships, aviation, machinery, etc., and are also widely used in some high-precision products, such as video recorders, copiers, cameras, mobile phones, precision machine tools, bank note counting machines, banknote bundling machines, etc.

[0003] Most traditional permanent magnet DC motors adopt an assembled motor structure. In order to have better heat dissipation effect, the motor housing is generally non-closed. When used in some places with high air humidity, there will be danger, easy electric leakage, and it will affect the service life of the motor.

[0004] Therefore, it is necessary to design a waterproof and sealing structure for a permanent magnet DC motor to solve the above problems. Summary of the Utility Model

[0005] A waterproof and sealing structure for a permanent magnet DC motor proposed by the utility model aims to solve the problem of poor waterproof performance in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A waterproof and sealing structure for a permanent magnet DC motor includes a housing, a sealing cover and a sealing hood; heat dissipation fins and a sealing bearing are provided on the housing, a sealing junction box and a sealing bearing are provided on the sealing cover, and a first extension part and a second extension part are provided on the sealing hood; the heat dissipation fins are arranged in a ring along the outer wall of the housing, the sealing bearing is located at the central position of one end of the housing, the sealing cover is installed at the other end of the housing, the sealing junction box is located on the upper surface of the sealing cover, and the first extension part and the second extension part are located on the surface of the sealing hood close to the sealing cover.

[0008] Preferably, a stator is provided on the inner wall of the housing, a rotor in the shape of a shaft is provided in the housing, and the rotor is sleeved with the sealing bearing.

[0009] Preferably, the sealing cover is in a U shape and has threads on the inner wall, and a sealing gasket is provided at the opening of the sealing cover.

[0010] Preferably, one side of the outer shell close to the sealing cover is provided with an inwardly extending annular clamping edge, the inner wall of the annular clamping edge is aligned with the inner wall of the sealing cover, and the outer wall of the annular clamping edge is provided with a thread.

[0011] Preferably, the first extension part and the second extension part provided on the sealing cover are annular, the outer wall of the first extension part and the inner wall of the second extension part are provided with threads, and rubber rings are provided on the tops of the first extension part and the second extension part.

[0012] Preferably, the first extension part is threadedly connected to the sealing cover, and the second extension part is threadedly connected to the annular clamping edge.

[0013] In the present utility model, it includes an outer shell, a sealing cover and a sealing cover; heat dissipation fins and a sealed bearing are provided on the outer shell, a sealed junction box and a sealed bearing are provided on the sealing cover, and a first extension part and a second extension part are provided on the sealing cover; the heat dissipation fins are arranged annularly along the outer wall of the outer shell, the sealed bearing is located at the central position of one end of the outer shell, the sealing cover is installed at the other end of the outer shell, the sealed junction box is located on the upper surface of the sealing cover, and the first extension part and the second extension part are located on the surface of the sealing cover close to the sealing cover side; in the present utility model, by screwing on the sealing cover, the sealing cover is driven to rotate, and the sealing cover is screwed tightly with the annular clamping edge, so that the sealing gasket on the sealing cover is clamped with the outer shell, and the rubber rings on the first extension part and the second extension part are respectively clamped with the inner wall of the sealing cover and the inner wall of the outer shell. At the same time, sealed bearings are installed on both sides of the motor to make the inside of the motor in a sealed state, improving its waterproof performance. At the same time, the heat dissipation fins provided on the outer shell can dissipate heat from the motor. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of a waterproof sealing structure of a permanent magnet DC motor proposed by the present utility model;

[0015] Figure 2 It is a rear view of a waterproof sealing structure of a permanent magnet DC motor proposed by the present utility model;

[0016] Figure 3 It is a top view of a waterproof sealing structure of a permanent magnet DC motor proposed by the present utility model;

[0017] Figure 4 It is a sectional view of a waterproof sealing structure of a permanent magnet DC motor proposed by the present utility model;

[0018] Figure 5 It is a schematic structural diagram of the sealing cover proposed by the present utility model.

[0019] In the figure: 1. Outer shell; 11. Heat dissipation fins; 12. Sealed bearing; 13. Rotor; 14. Stator; 15. Annular clamping edge; 2. Sealing cover; 201. Sealing gasket; 21. Sealed junction box; 3. Sealing cover; 31. First extension; 32. Second extension. Specific implementation mode

[0020] 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.

[0021] Refer to Figures 1-5 , a waterproof and sealed structure of a permanent magnet DC motor, including an outer shell 1, a sealing cover 2 and a sealing cover 3; the outer shell 1 is provided with heat dissipation fins 11 and a sealed bearing 12, the sealing cover 2 is provided with a sealed junction box 21 and a sealed bearing 12, and the sealing cover 3 is provided with a first extension 31 and a second extension 32; the heat dissipation fins 11 are arranged in a ring along the outer wall of the outer shell 1, the sealed bearing 12 is located at the central position of one end of the outer shell 1, the sealing cover 2 is installed at the other end of the outer shell 1, the sealed junction box 21 is located on the upper surface of the sealing cover 2, and the first extension 31 and the second extension 32 are located on the surface of the sealing cover 3 close to the sealing cover 2.

[0022] By screwing on the sealing cover 2 to drive the sealing cover 3 to rotate and screwing the sealing cover 3 tightly with the annular clamping edge 15, the sealing gasket 201 on the sealing cover 2 is clamped with the outer shell 1, the rubber rings on the first extension 31 and the second extension 32 are respectively clamped with the inner wall of the sealing cover 2 and the inner wall of the outer shell 1, and at the same time, sealed bearings 12 are installed on both sides of the motor to make the inside of the motor in a sealed state, improving its waterproof performance. At the same time, the heat dissipation fins 11 provided on the outer shell 1 can dissipate heat from the motor.

[0023] The inner wall of the outer shell 1 is provided with a stator 14, a shaft-shaped rotor 13 is arranged inside the outer shell 1, and the rotor 13 is sleeved with the sealed bearing 12, and the sealed bearing 12 can seal the inside of the motor and improve the waterproof performance.

[0024] The sealing cover 2 is in a U shape and its inner wall is provided with threads. A sealing gasket 201 is provided at the opening of the sealing cover 2. After the sealing cover 2 is screwed tightly, the sealing gasket 201 is clamped, which can prevent water from entering the inside of the motor.

[0025] One side of the outer shell 1 close to the sealing cover 2 is provided with an inwardly extending annular clamping edge 15. The inner wall of the annular clamping edge 15 is aligned with the inner wall of the sealing cover 2, and the outer wall of the annular clamping edge 15 is provided with threads.

[0026] The first extension part 31 and the second extension part 32 provided on the sealing cover 3 are annular. Threads are provided on the outer wall of the first extension part 31 and the inner wall of the second extension part 32. Rubber rings are provided at the tops of the first extension part 31 and the second extension part 32, and the rubber rings can further seal the motor.

[0027] The first extension part 31 is threadedly connected to the sealing cover 2, and the second extension part 32 is threadedly connected to the annular card edge 15. When the sealing cover 2 is screwed on, the sealing cover 2 is threadedly connected to the first extension part 31, driving the sealing cover 3 to rotate. The second extension part 32 is threadedly connected to the annular card edge 15, screwing the sealing cover 3 and the annular card edge 15 tightly, clamping the sealing gasket 201 on the sealing cover 2 with the outer shell 1, and clamping the rubber rings on the first extension part 31 and the second extension part 32 with the inner wall of the sealing cover 2 and the inner wall of the outer shell 1 respectively, improving the waterproof performance of the motor.

[0028] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A waterproof sealing structure for a permanent magnet DC motor, characterized in that: It includes a housing (1), a sealing cover (2) and a sealing hood (3); The housing (1) is provided with heat dissipation fins (11) and a sealed bearing (12), the sealing cover (2) is provided with a sealed junction box (21) and a sealed bearing (12), and the sealing hood (3) is provided with a first extension part (31) and a second extension part (32); The heat dissipation fins (11) are arranged annularly along the outer wall of the housing (1), the sealed bearing (12) is located at the central position of one end of the housing (1), the sealing cover (2) is installed at the other end of the housing (1), the sealed junction box (21) is located on the upper surface of the sealing cover (2), and the first extension part (31) and the second extension part (32) are located on the surface of the sealing hood (3) close to the sealing cover (2).

2. The waterproof and sealing structure of a permanent magnet DC motor according to claim 1, characterized in that: A stator (14) is provided on the inner wall of the housing (1), a rotor (13) in a shaft shape is provided in the housing (1), and the rotor (13) is sleeved with the sealed bearing (12).

3. The waterproof and sealing structure of a permanent magnet DC motor according to claim 1, characterized in that: The sealing cover (2) is in a U shape and the inner wall is provided with threads, and a sealing gasket (201) is provided at the opening of the sealing cover (2).

4. The waterproof and sealing structure of a permanent magnet DC motor according to claim 2, characterized in that: An inwardly extending annular clamping edge (15) is provided on one side of the housing (1) close to the sealing cover (2), the inner wall of the annular clamping edge (15) is aligned with the inner wall of the sealing cover (2), and threads are provided on the outer wall of the annular clamping edge (15).

5. The waterproof and sealing structure of a permanent magnet DC motor according to claim 1, characterized in that: The first extension part (31) and the second extension part (32) provided on the sealing hood (3) are in a ring shape, threads are provided on the outer wall of the first extension part (31) and the inner wall of the second extension part (32), and rubber rings are provided at the tops of the first extension part (31) and the second extension part (32).

6. The waterproof and sealing structure of a permanent magnet DC motor according to claim 5, characterized in that: The first extension part (31) is threadedly connected to the sealing cover (2), and the second extension part (32) is threadedly connected to the annular clamping edge (15).

Images