An oil-storage rotor

Abstract

This utility model discloses an oil-storage rotor, which aims to solve the problem of wear and increased motor noise caused by prolonged operation of existing motor rotors. The rotor includes an injection-molded part and a shaft hole inside the injection-molded part. The injection-molded part includes a rotor body and an output shaft. A magnetic ring is mounted on the outer side of the rotor body. The shaft hole includes a mounting hole inside the rotor body and a first support hole inside the output shaft. An oil-storage bushing is fixedly connected inside the mounting hole. This utility model injects lubricating grease into the first oil-storage stepped groove of the oil-storage bushing, and then inserts it into the mounting hole of the injection-molded part. Because the first oil-storage stepped groove of the oil-storage bushing forms a dedicated oil-storage structure for storing grease, it not only makes injecting lubricating grease more convenient, but also provides lubrication when used with the rotor support shaft, reducing motor noise during operation.

Description

Technical Field

[0001] This utility model belongs to the field of rotor technology, specifically relating to an oil-storage rotor. Background Technology

[0002] In the context of rapid development in modern industry and technology, electric motors, as key devices for energy conversion and transmission, are widely used in numerous fields such as industrial production, transportation, aerospace, and smart homes. The motor rotor, as one of the core components of an electric motor, directly affects the overall performance and reliability of the motor. Existing motor rotors require regular lubrication during operation, especially after prolonged use. Insufficient lubrication leads to increased friction between components, easily causing wear and tear. This not only reduces the rotor's lifespan but also increases motor noise. Utility Model Content

[0003] (1) Technical problems to be solved

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an oil-storage rotor. This rotor is designed to solve the problem that existing motor rotors require regular addition of lubricating oil during operation. Once the lubricating oil is insufficient, the friction between the components will increase, which will easily lead to wear. This will not only reduce the service life of the rotor, but also increase the noise of the motor.

[0005] (2) Technical solution

[0006] To solve the above-mentioned technical problems, this utility model provides an oil-storing rotor, which includes an injection-molded part and a shaft hole opened inside the injection-molded part. The injection-molded part includes a rotor body and an output shaft. A magnetic ring is installed on the outer side of the rotor body. The shaft hole includes a mounting hole opened inside the rotor body and a first support hole opened inside the output shaft. An oil-storing bushing is fixedly connected inside the mounting hole. A second support hole coaxial with the first support hole is opened on the oil-storing bushing. A first oil-storing step groove is opened on the inner wall of the second support hole near the first support hole. The first oil-storing step groove is filled with lubricating grease.

[0007] Preferably, an annular groove is formed on the outer surface of the rotor body, and the magnetic ring is located inside the annular groove and integrally injection molded with the rotor body.

[0008] Furthermore, a groove is provided on the side of the mounting hole away from the first support hole, and the oil storage bushing includes a fixing part and a limiting part. The fixing part is interference-fitted with the inner wall of the mounting hole, and the limiting part is located inside the groove.

[0009] Furthermore, a first chamfer is provided between the mounting hole and the first support hole, and a second chamfer is provided at the end of the fixing part away from the limiting part, with a gap between the first chamfer and the second chamfer.

[0010] Furthermore, an annular second oil storage step groove is provided on the right side of the outer surface of the fixing part, a piston ring is fitted on the outer surface of the second oil storage step groove, and a spring is installed between the piston ring and the left inner wall of the second oil storage step groove.

[0011] Furthermore, the outer side of the piston ring slides in contact with the inner wall of the mounting hole through the first sealing ring, and the inner side of the piston ring slides in contact with the outer surface of the second oil reservoir groove through the second sealing ring.

[0012] Furthermore, the piston ring has fixing grooves at both the upper and lower ends on the left side, and the oil reservoir bushing has through holes on both the upper and lower sides. Screws are installed inside the through holes, and the threaded end of the screws is threaded into the fixing grooves.

[0013] Beneficial effects

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This utility model involves injection molding the injection molded part and the magnetic ring into an assembly, then injecting lubricating grease into the first oil storage step groove of the oil storage sleeve, and then inserting it into the mounting hole of the injection molded assembly. At this time, the fixing part of the oil storage sleeve is fixed with the inner wall of the mounting hole by interference fit. Since the interior of the first oil storage step groove of the oil storage sleeve forms a special oil storage structure for storing grease, it not only makes it easier to inject lubricating grease, but also plays a lubricating role when used with the rotor support shaft, reducing the noise when the motor is running.

[0016] This invention increases the storage capacity of lubricating grease by setting a second oil storage step groove. After the oil storage sleeve is installed in the mounting hole, the screw is removed from the through hole using a tool, thereby causing the spring to apply pressure to the piston ring, so that the second oil storage step groove continuously delivers lubricating grease to the first oil storage step groove, thereby ensuring that the rotor assembly and the rotor support shaft are fully lubricated and effectively extending the service life. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of this utility model.

[0018] Figure 2 This is a cross-sectional structural diagram of Embodiment 1 of this utility model.

[0019] Figure 3 This is an exploded structural diagram of Embodiment 1 of this utility model.

[0020] Figure 4 This is a cross-sectional structural diagram of Embodiment 2 of this utility model.

[0021] Figure 5 This is a cross-sectional structural diagram of Embodiment 2 of this utility model.

[0022] Figure 6 This is a schematic diagram of the oil storage bushing structure of Embodiment 2 of this utility model.

[0023] The markings in the attached diagram are as follows: 1. Injection molded part; 2. Shaft hole; 3. Rotor body; 4. Output shaft; 5. Magnetic ring; 6. Mounting hole; 7. First support hole; 8. Oil reservoir bushing; 9. Second support hole; 10. First oil reservoir step groove; 11. Lubricating grease; 12. First chamfer; 13. Second chamfer; 14. Clearance; 301. Annular groove; 302. Groove; 801. Fixing part; 802. Limiting part; 15. Second oil reservoir step groove; 16. Piston ring; 17. Spring; 18. Through hole; 19. Screw. Detailed Implementation

[0024] Example 1

[0025] This specific embodiment is an oil-storage rotor, the structural schematic diagram of which is shown below. Figures 1-3 As shown, the rotor includes an injection molded part 1 and a shaft hole 2 opened inside the injection molded part 1. The injection molded part 1 includes a rotor body 3 and an output shaft 4. A magnetic ring 5 is installed on the outside of the rotor body 3. The shaft hole 2 includes a mounting hole 6 opened inside the rotor body 3 and a first support hole 7 opened inside the output shaft 4. An oil storage sleeve 8 is fixedly connected inside the mounting hole 6. A second support hole 9 coaxial with the first support hole 7 is opened on the oil storage sleeve 8. A first oil storage step groove 10 is opened on the inner wall of the second support hole 9 near the first support hole 7. The first oil storage step groove 10 is filled with lubricating grease 11.

[0026] like Figure 2 and Figure 3 As shown: In this embodiment, an annular groove 301 is formed on the outer surface of the rotor body 3, and the magnetic ring 5 is located inside the annular groove 301 and integrally injection molded with the rotor body 3; a groove 302 is formed on the side of the mounting hole 6 away from the first support hole 7, and the oil storage sleeve 8 includes a fixing part 801 and a limiting part 802. The fixing part 801 is interference-fitted with the inner wall of the mounting hole 6, and the limiting part 802 is located inside the groove 302. The other end of the fixing part 801 contacts the step between the mounting hole 6 and the first support hole 7 to form an oil storage space.

[0027] In use, the injection molded part 1 and the magnetic ring 5 are first injection molded into an assembly. Then, the lubricating grease 11 is injected into the first oil storage step groove 10 of the oil storage sleeve 8, and then inserted into the mounting hole 6 of the injection molded assembly. At this time, the fixing part 801 of the oil storage sleeve 8 is fixed with the inner wall of the mounting hole 6 by interference fit. Since the first oil storage step groove 10 of the oil storage sleeve 8 forms a special oil storage structure for storing grease, it not only makes it easier to inject the lubricating grease 11, but also plays a lubricating role when used with the rotor support shaft, reducing the noise when the motor is running.

[0028] Example 2

[0029] like Figure 4 and Figure 5 As shown: In this embodiment, a first chamfer 12 is provided between the mounting hole 6 and the first support hole 7, and a second chamfer 13 is provided at the end of the fixing part 801 away from the limiting part 802. A gap 14 is left between the first chamfer 12 and the second chamfer 13. This can increase the storage space of the lubricating grease 11 and better lubricate the rotor assembly and the rotor support shaft.

[0030] like Figure 5 and Figure 6 As shown: In this embodiment, an annular second oil storage step groove 15 is provided on the right side of the outer surface of the fixing part 801. A piston ring 16 is sleeved on the outer surface of the second oil storage step groove 15. A spring 17 is installed between the piston ring 16 and the left inner wall of the second oil storage step groove 15. The outer side of the piston ring 16 slides in contact with the inner wall of the mounting hole 6 through the first sealing ring, and the inner side of the piston ring 16 slides in contact with the outer surface of the second oil storage step groove 15 through the second sealing ring. In this way, lubricating grease 11 can also be filled between the second oil storage step groove 15 and the mounting hole 6, increasing the storage capacity of lubricating grease 11. At the same time, the piston ring 16 can seal, and under the action of the spring 17, the lubricating grease 11 in the second oil storage step groove 15 can be sent into the first oil storage step groove 10 for lubrication.

[0031] like Figure 5 and Figure 6 As shown: In this embodiment, the piston ring 16 has a fixing groove at both the upper and lower ends on the left side, and the oil storage bushing 8 has a through hole 18 on both the upper and lower sides. A screw 19 is provided inside the through hole 18, and the threaded end of the screw 19 is threaded into the fixing groove.

[0032] Before the oil reservoir sleeve 8 is installed in the mounting hole 6, the screw 19 is threadedly fixed to the piston ring 16 and the spring 17 is compressed. Then, the lubricating grease 11 is injected into the first oil reservoir groove 10 and the second oil reservoir groove 15 of the oil reservoir sleeve 8. After the oil reservoir sleeve 8 is installed in the mounting hole 6, the screw 19 is removed from the through hole using a tool, so that the spring 17 applies pressure to the piston ring 16, thereby continuously delivering lubricating grease from the second oil reservoir groove 15 to the first oil reservoir groove 10. This ensures that the rotor assembly and the rotor support shaft are adequately lubricated, effectively extending the service life.

[0033] All technical features in this embodiment can be freely combined according to actual needs.

[0034] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. An oil-storing rotor, comprising an injection-molded part (1) and a shaft hole (2) formed inside the injection-molded part (1), characterized in that: The injection molded part (1) includes a rotor body (3) and an output shaft (4). A magnetic ring (5) is installed on the outside of the rotor body (3). The shaft hole (2) includes a mounting hole (6) opened in the rotor body (3) and a first support hole (7) opened in the output shaft (4). An oil storage sleeve (8) is fixedly connected inside the mounting hole (6). A second support hole (9) coaxial with the first support hole (7) is opened on the oil storage sleeve (8). A first oil storage step groove (10) is opened on the inner wall of the second support hole (9) near the first support hole (7). The first oil storage step groove (10) is filled with lubricating grease (11).

2. The oil-storage rotor according to claim 1, characterized in that, The outer surface of the rotor body (3) is provided with an annular groove (301), and the magnetic ring (5) is located inside the annular groove (301) and is integrally injection molded with the rotor body (3).

3. The oil-storage rotor according to claim 2, characterized in that, The mounting hole (6) has a groove (302) on the side away from the first support hole (7). The oil storage bushing (8) includes a fixing part (801) and a limiting part (802). The fixing part (801) is interference-fitted with the inner wall of the mounting hole (6), and the limiting part (802) is located inside the groove (302).

4. The oil-storage rotor according to claim 3, characterized in that, A first chamfer (12) is provided between the mounting hole (6) and the first support hole (7), and a second chamfer (13) is provided at the end of the fixing part (801) away from the limiting part (802), with a gap (14) between the first chamfer (12) and the second chamfer (13).

5. The oil-storage rotor according to claim 4, characterized in that, The outer surface of the fixing part (801) is provided with an annular second oil storage step groove (15) on the right side. A piston ring (16) is sleeved on the outer surface of the second oil storage step groove (15). A spring (17) is installed between the piston ring (16) and the left inner wall of the second oil storage step groove (15).

6. The oil-storage rotor according to claim 5, characterized in that, The outer side of the piston ring (16) slides in contact with the inner wall of the mounting hole (6) through the first sealing ring, and the inner side of the piston ring (16) slides in contact with the outer surface of the second oil storage step groove (15) through the second sealing ring.

7. The oil-storage rotor according to claim 6, characterized in that, The piston ring (16) has a fixing groove at both the upper and lower ends on the left side, and the oil storage bushing (8) has a through hole (18) on both the upper and lower sides. A screw (19) is installed inside the through hole (18), and the threaded end of the screw (19) is threaded into the fixing groove.

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