Waterproof and dustproof permanent magnet motor

Abstract

The utility model relates to the technical field of permanent magnet motor, and disclose a waterproof dustproof permanent magnet motor, including stator and rotor, the outside of stator sleeve joint installation has the shell, the outside of shell is matched and installed and has the heat dissipation board, the front and rear end of shell is installed with front cover and back cover respectively, the inside of front cover and back cover is installed with motor protective cover through bolt, the front end fixed of front cover has axle end protective cover, the inside installation of axle end protective cover has second bearing. The waterproof dustproof permanent magnet motor, install the outside of heat dissipation board in the shell, and the outside of shell is sleeved with motor protective cover, and the position of motor protective cover is limited through front cover and back cover at both ends of shell, wherein the heat of motor use is absorbed to heat dissipation board, and the outside of motor protective cover is sleeved in heat dissipation board, avoid rainwater to enter the inside of heat dissipation board, and the inside of motor protective cover forms opening, that is, effectively block rainwater and dust at the same time, improve the heat dissipation effect.

Description

Technical Field

[0001] This utility model relates to the field of permanent magnet motor technology, specifically a waterproof and dustproof permanent magnet motor. Background Technology

[0002] A permanent magnet motor is an electric motor that uses a permanent magnet to generate a magnetic field to drive the motor. Compared with traditional motors (such as induction motors), a significant feature of permanent magnet motors is that they use permanent magnets to provide the magnetic field, without the need for external current to generate the magnetic field.

[0003] Existing permanent magnet motors are used outdoors, where dust and rain can enter and damage the motor. While sealing improves waterproofing and dustproofing, poor heat dissipation during sealing can lead to overheating and damage. Therefore, we propose a waterproof and dustproof permanent magnet motor. Summary of the Invention

[0004] This invention provides a waterproof and dustproof permanent magnet motor, which solves the problem that in the prior art, when the motor is sealed to improve the waterproof and dustproof performance of the equipment, the heat dissipation performance is poor, which leads to easy damage due to high temperature during use.

[0005] This utility model provides the following technical solution: a waterproof and dustproof permanent magnet motor, including a stator and a rotor, the rotor passing through the stator, a housing being sleeved on the outside of the stator, a heat sink being fitted on the outside of the housing, a front cover plate and a rear cover plate being installed at the front and rear ends of the housing respectively, a motor protective cover being installed between the front cover plate and the rear cover plate by bolts, a shaft end protective cover being fixed at the front end of the front cover plate, a second bearing being installed inside the shaft end protective cover, a rotor being snapped into the second bearing, and a waterproof baffle being fixed on the outside of the rotor, a baffle protective cover being installed on one side of the front cover plate and outside the shaft end protective cover, the waterproof baffle being located between the shaft end protective cover and the baffle protective cover.

[0006] Preferably, the outer casing includes a housing, an inner limiting block is fixed on the inner side of the housing and is snapped into the inner side of the stator, and an outer limiting block is fixed on the outer side of the housing, wherein the heat sink is sleeved on the outer side of the outer limiting block at equal intervals.

[0007] Preferably, a sealing strip is installed between the front cover and the rear cover and the housing, and the inner sides of the front cover and the rear cover are fitted onto the outer peripheral surface of the heat sink.

[0008] Preferably, a bracket is fixedly connected to the lower end of the motor protective cover, and an opening is formed at the lower end of the motor protective cover, with the motor protective cover fitted over the outside of the heat sink.

[0009] Preferably, the rotor is installed inside the stator, with both ends of the rotor passing through the interior of the front cover plate and the rear cover plate in sequence.

[0010] Preferably, a rear sleeve is fixed to the rear end of the rear cover plate, a first bearing is installed in the middle of the rear end of the rear cover plate, a sealing sleeve that contacts the outside of the rotor is installed at the rear end of the first bearing, and the rear sleeve is fitted over the outside of the first bearing and the sealing sleeve.

[0011] Preferably, the waterproof baffle is fitted to the outside of the second bearing, the outside of the waterproof baffle is provided with an overflow groove, and the baffle protective cover is fitted to the outside of the waterproof baffle.

[0012] Compared with existing waterproof and dustproof permanent magnet motors, this utility model has the following advantages: 1. This waterproof and dustproof permanent magnet motor is mounted on the outside of the housing via a heat sink plate, and a motor protective cover is fitted over the outside of the housing. The position of the motor protective cover is defined at both ends of the housing by a front cover plate and a rear cover plate. The heat sink plate absorbs the heat during motor operation, and the motor protective cover is fitted over the outside of the heat sink plate to prevent rainwater from entering the inside of the heat sink plate. The inside of the motor protective cover has an opening, which effectively blocks rainwater and dust while improving the heat dissipation effect.

[0013] 2. This waterproof and dustproof permanent magnet motor is fixed at both ends of the outer casing by heat sink plates and a front cover plate, which improves the sealing effect of the equipment. At the same time, the waterproof baffle is fitted outside the second bearing. When the rotor rotates, the rotor drives the waterproof baffle to rotate, and the waterproof baffle drives rainwater out, thereby improving the waterproof efficiency of the equipment. The baffle protective cover is fitted outside the waterproof baffle, further improving the external protective performance of the waterproof baffle. Thus, the equipment improves the convenience of disassembly, waterproof and dustproof effect, and protective performance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of the present utility model; Figure 2 This is a schematic diagram of the exploded structure of the main body of this utility model; Figure 3 This is a schematic cross-sectional view of the main body of this utility model; Figure 4 This is a schematic diagram of the side cross-sectional structure of the main body of this utility model; Figure 5 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0015] In the diagram: 1. Stator; 2. Rotor; 3. Outer shell; 31. Housing; 32. Inner limit block; 33. Outer limit block; 4. Heat sink; 5. Front cover plate; 6. Rear cover plate; 7. Rear sleeve; 8. Motor protective cover; 9. Bracket; 10. First bearing; 11. Sealing sleeve; 12. Shaft end protective cover; 13. Second bearing; 14. Waterproof baffle; 15. Baffle protective cover. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A waterproof and dustproof permanent magnet motor includes a stator 1 and a rotor 2. A housing 3 is sleeved around the stator 1, protecting the stator 1 and reducing rainwater penetration. A heat dissipation plate 4 is installed on the outside of the housing 3 to absorb the heat generated by the stator 1 during operation, improving heat dissipation while ensuring waterproofing. A front cover plate 5 and a rear cover plate 6 are installed at the front and rear ends of the housing 3, respectively, on both sides of the housing 3. The front cover plate 5 and the rear cover plate 6 seal the front and rear ends of the stator 1. A motor protective cover 8 is bolted to the inner side of the rear cover plate 6. A shaft end protective cover 12 is fixed to the front end of the front cover plate 5. A second bearing 13 is installed inside the shaft end protective cover 12. The second bearing 13 reduces the frictional resistance when the front end of the rotor 2 rotates. A waterproof baffle 14 is fixed to the outside of the rotor 2. A baffle protective cover 15 is installed on one side of the front cover plate 5 outside the shaft end protective cover 12. The baffle protective cover 15 is fitted over the outside of the waterproof baffle 14. The baffle protective cover 15 protects the outside of the waterproof baffle 14. When the waterproof baffle 14 rotates, it rotates and throws out the inflowing liquid, improving its waterproof and dustproof effect.

[0018] Please see Figure 2The outer casing 3 includes a housing 31. An inner limiting block 32 is fixed on the inner side of the housing 31. The inner limiting block 32 is snapped into the inner side of the stator 1. An outer limiting block 33 is fixed on the outer side of the housing 31. The heat dissipation plate 4 is sleeved on the outer side of the outer limiting block 33 at equal intervals. A sliding groove is opened on the outer side of the stator 1. The inner limiting block 32 installed on the inner side of the housing 31 is movably sleeved in the sliding groove. That is, the position of the housing 31 outside the stator 1 can be limited. The outer limiting block 33 is fixed on the outer side of the housing 31. The heat dissipation plate 4 is sleeved on the outer side of the outer limiting block 33. That is, the heat dissipation plate 4 is installed on the outer side of the housing 3, which improves the convenience of the installation of the heat dissipation plate 4. The housing 3 encapsulates the outside of the stator 1. At the same time, the heat dissipation plate 4 effectively absorbs the heat generated by the stator 1 and rotor 2 during use. While maintaining its seal, it improves the heat dissipation effect of the equipment.

[0019] Please see Figure 3 A sealing strip is installed between the front cover plate 5 and the rear cover plate 6 and the outer shell 3. The inner sides of the front cover plate 5 and the rear cover plate 6 are fitted onto the upper end of the heat sink 4. After being installed on the outside of the stator 1 through the outer shell 3, the front cover plate 5 and the rear cover plate 6 are respectively fitted onto the front and rear ends of the outer shell 3. A sealing strip is installed between the front cover plate 5 and the rear cover plate 6 and the outer shell 3 to improve the sealing between the outer shell 3, the front cover plate 5 and the rear cover plate 6. At the same time, the front cover plate 5 and the rear cover plate 6 are fitted onto the upper end of the heat sink 4. That is, the front cover plate 5 and the rear cover plate 6 limit the position of the heat sink 4 outside the outer shell 3, ensuring that the position of the heat sink 4 outside the outer shell 3 is limited, improving the convenience of heat sink 4 assembly and the stability of positioning.

[0020] Please see Figure 4 The lower end of the motor protective cover 8 is fixedly connected to a bracket 9, and an opening is formed at the lower end of the motor protective cover 8. The motor protective cover 8 is fitted onto the outside of the heat sink 4 and onto the outside of the outer shell 3. The two sides of the motor protective cover 8 contact the front cover plate 5 and the rear cover plate 6. After bolts are installed inside the front cover plate 5 and the rear cover plate 6, the motor protective cover 8 drives the front cover plate 5 and the rear cover plate 6 installed at both ends to splice and limit them. The bracket 9 extends to the lower end, and the lower end of the motor protective cover 8 forms an opening to facilitate air circulation. The motor protective cover 8 covers the upper end of the heat sink 4. In rainy or snowy weather, the motor protective cover 8 effectively blocks rainwater, preventing rainwater from entering the interior of the heat sink 4 and causing corrosion damage to the heat sink 4, thereby improving the waterproof and dustproof effect and service life of the equipment.

[0021] Please see Figure 2 The rotor 2 is installed inside the stator 1. Both ends of the rotor 2 pass through the interior of the front cover plate 5 and the rear cover plate 6 in sequence. The rotor 2 is installed inside the stator 1 and passes through the front cover plate 5 and the rear cover plate 6 in sequence. That is, when the stator 1 is energized, it can drive the rotor 2 to rotate.

[0022] Please see Figure 4 A rear sleeve 7 is fixed to the rear end of the rear cover plate 6. A first bearing 10 is installed in the middle of the rear end of the rear cover plate 6. A sealing sleeve 11 that contacts the outside of the rotor 2 is installed at the rear end of the first bearing 10. The rear sleeve 7 is sleeved on the outside of the first bearing 10 and the sealing sleeve 11. The rear sleeve 7 is installed on the outside of the rear cover plate 6 to seal and protect the first bearing 10 and the sealing sleeve 11 installed at the rear end of the rear cover plate 6. The first bearing 10 reduces the frictional resistance when the rotor 2 rotates, and the sealing sleeve 11 seals the outside of the rotor 2 to reduce rainwater leakage.

[0023] Please see Figure 5 A waterproof baffle 14 is fitted to the outside of the second bearing 13. An overflow groove is provided on the outside of the waterproof baffle 14. A baffle protective cover 15 is fitted to the outside of the waterproof baffle 14. The second bearing 13 is installed inside the shaft end protective cover 12. The second bearing 13 reduces the frictional resistance when the front end of the rotor 2 rotates. At the same time, the waterproof baffle 14 is installed outside the second bearing 13, and the baffle protective cover 15 is sleeved on the outside of the waterproof baffle 14. The baffle protective cover 15 provides protection for the outside of the waterproof baffle 14. When leakage occurs, when the waterproof baffle 14 rotates, the waterproof baffle 14 drives the leaking liquid to rotate. Under the action of centrifugal force, the liquid is thrown out through the overflow groove, reducing the leakage of liquid.

[0024] Working principle: In use, a housing 3 is fitted onto the outside of the stator 1, with a heat sink 4 fitted inside the housing 3. A front cover 5 and a rear cover 6 are fitted onto both ends of the stator 1, limiting the position of the heat sink 4 inside the housing 3. A motor protective cover 8 is fitted onto the outside of the housing 3, ensuring that the motor protective cover 8 is installed between the front cover 5 and the rear cover 6. Simultaneously, a first bearing 10 and a sealing sleeve 11 are installed at the rear end of the rotor 2, and a waterproof baffle 14 is installed at the front end of the shaft end protective cover 12. The baffle protective cover 15 limits the position of the waterproof baffle 14. When the stator 1 drives the rotor 2 to rotate, the first bearing 10... The waterproof baffle 14 reduces the frictional resistance of the rotor 2 when it rotates. When liquid leaks through the stator 1 and rotor 2, the waterproof baffle 14 rotates synchronously with the shaft end guard 12. At the same time, the centrifugal force generated by the rotation of the waterproof baffle 14 can drive the leaked liquid to rotate and be discharged through the overflow groove opened on the outside of the waterproof baffle 14, further improving its waterproof and dustproof effect. Since the lower end of the motor guard 8 has an opening, the heat sink 4 is installed on the outside of the housing 3. The heat sink 4 absorbs the heat generated by the motor. The opening increases the contact surface with the air and blocks rainwater falling from the top, further improving its heat dissipation performance.

[0025] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waterproof and dustproof permanent magnet motor, comprising a stator (1) and a rotor (2), wherein the rotor (2) is arranged through the stator (1), and a housing (3) is sleeved on the outside of the stator (1), and a heat sink (4) is fitted on the outside of the housing (3), characterized in that: The front and rear ends of the outer casing (3) are respectively equipped with a front cover plate (5) and a rear cover plate (6). A motor protective cover (8) is installed between the front cover plate (5) and the rear cover plate (6) by bolts. A shaft end protective cover (12) is fixed at the front end of the front cover plate (5). A second bearing (13) is installed inside the shaft end protective cover (12). A rotor (2) is snapped into the second bearing (13). A waterproof baffle (14) is fixed outside the rotor (2). A baffle protective cover (15) is installed on one side of the front cover plate (5) and outside the shaft end protective cover (12). The waterproof baffle (14) is located between the shaft end protective cover (12) and the baffle protective cover (15).

2. A waterproof and dustproof permanent magnet motor according to claim 1, characterized in that: The outer shell (3) includes a housing (31), an inner limiting block (32) is fixed on the inner side of the housing (31), the inner limiting block (32) is snapped into the inner side of the stator (1), and an outer limiting block (33) is fixed on the outer side of the housing (31), wherein the heat sink (4) is sleeved on the outer side of the outer limiting block (33) at equal intervals.

3. A waterproof and dustproof permanent magnet motor according to claim 1, characterized in that: A sealing strip is installed between the front cover (5) and the rear cover (6) and the outer shell (3), and the inner sides of the front cover (5) and the rear cover (6) are fitted onto the outer circumferential surface of the heat sink (4).

4. A waterproof and dustproof permanent magnet motor according to claim 1, characterized in that: A bracket (9) is fixedly connected to the lower end of the motor protective cover (8), and an opening is formed at the lower end of the motor protective cover (8). The motor protective cover (8) is fitted onto the outside of the heat sink (4).

5. A waterproof and dustproof permanent magnet motor according to claim 1, characterized in that: The rotor (2) is installed inside the stator (1), and the two ends of the rotor (2) pass through the interior of the front cover plate (5) and the rear cover plate (6) in sequence.

6. A waterproof and dustproof permanent magnet motor according to claim 1, characterized in that: A rear sleeve (7) is fixed to the rear end of the rear cover plate (6). A first bearing (10) is installed in the middle of the rear end of the rear cover plate (6). A sealing sleeve (11) that contacts the outside of the rotor (2) is installed at the rear end of the first bearing (10). The rear sleeve (7) is sleeved on the outside of the first bearing (10) and the sealing sleeve (11).

7. A waterproof and dustproof permanent magnet motor according to claim 1, characterized in that: A waterproof baffle (14) is fitted to the outside of the second bearing (13), and an overflow groove is provided on the outside of the waterproof baffle (14). A baffle cover (15) is fitted to the outside of the waterproof baffle (14).

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