A single unit that prevents oil leakage

Abstract

This application relates to an oil-leakage-proof single-unit motor, belonging to the technical field of motors. It includes a housing, shaft, rotor, magnets, commutator, middle plate, oil baffle ring, gasket, and rear cover. The housing has a mounting cavity, and one side of the housing has an opening communicating with the mounting cavity. The rear cover is mounted on the opening. The shaft passes sequentially through the rear cover and the side wall of the housing. The rotor is coaxially mounted on the outer periphery of the shaft. The magnets are coaxially mounted on the inner wall of the mounting cavity. The commutator is coaxially mounted on the outer side of the shaft, located on the side of the rotor near the rear cover. The middle plate is mounted between the magnets and the rear cover. The oil baffle ring is coaxially mounted on the outer periphery of the shaft, located on the side of the commutator near the rear cover. The oil baffle ring and the shaft are interference-fitted. The oil baffle ring is made of copper. The gasket is located on the side of the oil baffle ring near the rear cover. This application has the effect of reducing the amount of lubricating oil entering the commutator.

Description

Technical Field

[0001] This application relates to the technical field of electric motors, and in particular to a single-unit motor that prevents oil leakage. Background Technology

[0002] Electric motors, as devices for converting electrical energy into mechanical energy, are widely used in our lives, such as in automobiles, refrigerators, air conditioners, and fans.

[0003] In related technologies, a motor consists of a motor housing, a shaft fixed inside the motor housing, a rotor, a commutator, and a rear cover. Usually, a plastic gasket is added between the commutator and the rear cover to prevent lubricating oil from entering the commutator.

[0004] Regarding the aforementioned technologies, the inventors believe that some motors are used in the thermal management system of automobiles. Due to the high temperature in the thermal management system, the plastic gaskets inside the motor are prone to deformation, causing lubricating oil to flow into the commutator from the gap between the plastic gasket and the shaft, damaging the commutator and reducing the lifespan of the motor. Utility Model Content

[0005] To reduce the risk of lubricating oil entering the commutator, this application provides a leak-proof unit.

[0006] The oil leak prevention unit provided in this application adopts the following technical solution:

[0007] An oil-leakage prevention unit includes a housing, a shaft, a rotor, magnets, a commutator, a middle plate, an oil baffle ring, a gasket, and a rear cover. The housing has a mounting cavity, and one side of the housing has an opening communicating with the mounting cavity. The rear cover is mounted on the opening. The shaft passes through the rear cover and the side wall of the housing in sequence. The rotor is coaxially mounted on the outer periphery of the shaft. The magnets are coaxially mounted on the inner wall of the mounting cavity. The commutator is coaxially mounted on the outer side of the shaft and is located on the side of the rotor near the rear cover. The middle plate is mounted between the magnets and the rear cover. The oil baffle ring is coaxially mounted on the outer periphery of the shaft and is located on the side of the commutator near the rear cover. The oil baffle ring and the shaft are interference-fitted. The oil baffle ring is made of copper. The gasket is located on the side of the oil baffle ring near the rear cover.

[0008] With the above technical solution, since the oil retainer ring is made of copper, it has good heat resistance and is not easily deformed at high temperatures. In addition, the interference fit between the oil retainer ring and the shaft reduces the risk of lubricating oil sliding in between the retainer ring and the shaft, thereby reducing the risk of lubricating oil entering the commutator.

[0009] The beneficial effects of this utility model are as follows: Since the oil baffle is made of copper, it has good heat resistance and is not easily deformed at high temperatures. In addition, the interference fit between the oil baffle and the shaft reduces the risk of lubricating oil sliding in between the baffle and the shaft, thereby reducing the risk of lubricating oil entering the commutator and increasing the life of the motor. Attached Figure Description

[0010] Figure 1 This is a cross-sectional view of the oil leak prevention unit in this application.

[0011] Explanation of reference numerals in the attached drawings: 1. Housing; 11. Mounting cavity; 12. Opening; 2. Shaft; 3. Rotor; 4. Magnet; 5. Commutator; 6. Middle plate; 7. Oil baffle ring; 8. Gasket; 9. Rear cover. Detailed Implementation

[0012] The following is in conjunction with the appendix Figure 1 This application will be described in further detail.

[0013] This application discloses a single-unit oil leak prevention device.

[0014] Reference Figure 1 The oil-proof unit includes a housing 1, a shaft 2, a rotor 3, a magnet 4, a commutator 5, a middle plate 6, an oil baffle ring 7, a gasket 8, and a rear cover 9. The housing 1 has a mounting cavity 11, and an opening 12 communicating with the mounting cavity 11 is provided on one side of the housing 1. The rear cover 9 is installed on the opening 12. The shaft 2 passes through the rear cover 9 and the side wall of the housing 1 in sequence. The rotor 3 is coaxially installed on the outer periphery of the shaft 2. The magnet 4 is coaxially installed on the inner wall of the mounting cavity 11. The commutator 5 is coaxially installed on the outer side of the shaft 2. The commutator 5 is located on the side of the rotor 3 near the rear cover 9. The middle plate 6 is installed between the magnet 4 and the rear cover 9. The oil baffle ring 7 is coaxially installed on the outer periphery of the shaft 2. The oil baffle ring 7 is located on the side of the commutator 5 near the rear cover 9. The oil baffle ring 7 and the shaft 2 are interference-fitted. The oil baffle ring 7 is made of copper. The gasket 8 is located on the side of the oil baffle ring 7 near the rear cover 9.

[0015] The implementation principle of the oil-proof single unit in this application embodiment is as follows: Since the oil baffle ring 7 is made of copper, it has good heat resistance and is not easily deformed at high temperatures. In addition, the oil baffle ring 7 and the shaft 2 are interference-fitted, which reduces the risk of lubricating oil sliding in between the baffle ring and the shaft 2, thereby reducing the risk of lubricating oil entering the commutator 5 and increasing the life of the motor.

[0016] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An oil leak prevention unit, characterized by: The assembly includes a housing (1), a shaft (2), a rotor (3), magnets (4), a commutator (5), a middle plate (6), an oil baffle (7), a gasket (8), and a rear cover (9). The housing (1) has a mounting cavity (11), and one side of the housing (1) has an opening (12) communicating with the mounting cavity (11). The rear cover (9) is mounted on the opening (12). The shaft (2) passes through the rear cover (9) and the side wall of the housing (1) in sequence. The rotor (3) is coaxially (2) mounted on the outer periphery of the shaft (2). The magnets (4) are coaxially (2) mounted on the inner wall of the mounting cavity (11). The commutator (5) is coaxially (2) mounted on the outside of the shaft (2). The commutator (5) is located on the side of the rotor (3) near the rear cover (9). The middle plate (6) is mounted between the magnet (4) and the rear cover (9). The oil baffle (7) is coaxially (2) mounted on the outer periphery of the shaft (2). The oil baffle (7) is located on the side of the commutator (5) near the rear cover (9). The oil baffle (7) and the shaft (2) are interference-fitted. The oil baffle (7) is made of copper. The gasket (8) is located on the side of the oil baffle (7) near the rear cover (9).

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