Miniature gear motor rotor

Abstract

The utility model relates to a miniature gear motor rotor. The technical problem to be solved by the utility model is to provide the miniature gear motor rotor. According to the technical scheme, the rotor comprises a rotor rotating shaft assembly, an iron core assembly and a rotor bearing, the rotor rotating shaft assembly comprises a rotating shaft, a rotating shaft inner core and a rotating shaft end cover, an inner core imbedding hole is formed in one end of the rotating shaft, an inner core butt joint seat is arranged at the bottom of a rotating shaft water inlet hole, a butt joint seat threaded hole is formed in the inner core butt joint seat, and the rotor bearing is arranged in the butt joint seat threaded hole. And the rotating shaft inner core comprises an inner core main body, an inner core bearing boss and an inner core thread mounting part which are arranged in sequence. The motor rotor has the advantages that the rotor water inlet channel of the rotating shaft and the inner core water outlet hole structure of the rotating shaft inner core form circulating flow of cooling water, heat generated in the operation process of the motor rotor is effectively taken away, the temperature of the motor rotor in the operation process is remarkably reduced, attenuation of magnetic force of the powerful magnets is delayed, and the service life of the motor rotor is prolonged. And the problem of motor stalling or noise caused by overheating is reduced.

Description

Technical Field

[0001] This utility model relates to a miniature geared motor rotor. Background Technology

[0002] The rotor of a miniature geared motor is the core component for power transmission. It includes a rotor shaft, an iron core assembly mounted on the rotor shaft assembly, and rotor bearings. Existing motor rotors generate a lot of heat during rotation but lack a good heat dissipation structure. Excessive heat can cause the strong magnets inside the motor to weaken rapidly, resulting in the motor not turning and generating noise. The lubrication effect of the rotor bearings is greatly reduced, affecting the motor speed, shortening its service life, and posing safety hazards. Improvements and optimizations are needed to address these issues. Utility Model Content

[0003] To solve the above problems, the technical problem to be solved by this utility model is to provide a miniature geared motor rotor.

[0004] The technical solution adopted by the rotor of this micro geared motor is as follows: It includes a rotor shaft assembly, an iron core assembly sleeved on the rotor shaft assembly, and a rotor bearing. The rotor shaft assembly comprises a shaft, a shaft inner core, and a shaft end cap. One end of the shaft has an inner core insertion hole for inserting the inner core. The bottom of the inner core insertion hole has an inner core mating seat, and the inner core mating seat has a mating seat threaded hole. The shaft inner core includes, in sequence, an inner core body, an inner core receiving boss placed on the inner core mating seat, and an inner core threaded mounting part threadedly connected to the mating seat threaded hole. The inner core insertion hole... A rotor water inlet channel is formed between the inner core body and the outer wall of the inner core body. The outer wall of the shaft end is provided with a shaft water inlet hole communicating with the rotor water inlet channel. The inner core body is provided with an inner core water outlet hole. The outer wall of the inner core body is provided with an inner core connecting hole at intervals around the inner core receiving boss, which connects the inner core water outlet hole with the rotor water inlet channel. The shaft end cover is provided on the shaft end. The shaft end cover includes an end cover end. The end cover end is provided with an end cover inner post. The end cover inner post is provided with an end cover mating hole for the shaft inner core to pass through.

[0005] The inner core receiving boss is provided with an inner core arc transition groove.

[0006] The rotor shaft assembly includes a first sealing gasket, and a shaft positioning groove for mounting the first sealing gasket is formed between the inner core mating seat and the inner wall of the shaft.

[0007] The rotor shaft assembly also includes a second sealing gasket, which is sleeved on the inner post of the end cap, and the end of the inner post of the end cap is provided with an end cap limiting stop for preventing the second sealing gasket from falling off.

[0008] The inner wall of the rotating shaft is provided with convex inner edges at intervals.

[0009] The shaft end cap is threaded to the outer wall of the shaft end.

[0010] The advantages of this micro geared motor rotor are: the rotor water inlet channel of the shaft and the water outlet hole structure of the inner core of the shaft form a cooling water circulation flow, which effectively removes the heat generated during the operation of the motor rotor, significantly reduces the temperature of the motor rotor during operation, slows down the attenuation of the magnetic force of the strong magnet, and reduces motor stoppage or noise problems caused by overheating. Attached Figure Description

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0012] Figure 1 This is a schematic diagram of the rotor structure of the miniature geared motor of this utility model;

[0013] Figure 2 This is a half-sectional view of the rotor shaft assembly of this utility model;

[0014] Figure 3 This is a half-sectional view of the rotating shaft of this utility model;

[0015] Figure 4 This is a schematic diagram of the structure of this utility model;

[0016] Figure 5 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0017] like Figure 1-5As shown, the miniature geared motor rotor of this utility model includes a rotor shaft assembly 1, an iron core assembly 2 sleeved on the rotor shaft assembly 1, and a rotor bearing 3. The rotor shaft assembly 1 includes a shaft 5, a shaft inner core 6, and a shaft end cap 7. One end of the shaft 5 is provided with an inner core insertion hole 8 for inserting the shaft inner core 6. The bottom of the inner core insertion hole 8 is provided with an inner core mating seat 9. The inner core mating seat 9 is provided with a mating seat threaded hole 10. The shaft inner core 6 includes an inner core body 12 arranged in sequence, an inner core receiving boss 13 placed on the inner core mating seat 9, and an inner core threaded mounting part 14 threadedly connected to the mating seat threaded hole 10. A rotor water inlet channel 16 is formed between the inlet hole 8 and the outer wall of the inner core body 12. The outer wall of the end of the rotating shaft 5 is provided with a rotating shaft water inlet hole 17 communicating with the rotor water inlet channel 16. The inner core body 12 is provided with an inner core water outlet hole 18. The outer wall of the inner core body 12 is provided with an inner core connecting hole 19 at intervals around the inner core receiving boss 13, which connects the inner core water outlet hole 18 with the rotor water inlet channel 16. The rotating shaft end cover 7 is provided on the end of the rotating shaft 5. The rotating shaft end cover 7 includes an end cover end 21. An end cover inner post 22 is provided in the end cover end 21. An end cover mating hole 23 for the rotating shaft inner core 6 to pass through is provided in the end cover inner post 22. The rotor water inlet channel 16 of the rotating shaft 5 and the inner core water outlet hole 18 of the inner core 6 of the rotating shaft form a cooling water circulation flow, which effectively removes the heat generated during the operation of the motor rotor, significantly reduces the temperature of the motor rotor during operation, slows down the attenuation of the magnetic force of the strong magnet, and reduces motor stoppage or noise problems caused by overheating.

[0018] The inner core receiving boss 13 is provided with an inner core arc transition groove 26 to reduce the impact of cooling water on the inner core 6 of the rotating shaft, so that the cooling water can smoothly enter the inner core water outlet 18 and improve the service life of the inner core 6 of the rotating shaft.

[0019] The rotor shaft assembly 1 includes a first sealing gasket 27, and a shaft positioning groove 30 is formed between the inner core mating seat 9 and the inner wall of the shaft 5 for installing the first sealing gasket 27, which effectively prevents cooling water leakage and improves the sealing and reliability of the mating point.

[0020] The rotor shaft assembly 1 also includes a second sealing gasket 28, which is sleeved on the inner post 22 of the end cover. The end of the inner post 22 of the end cover is provided with an end cover limiting flange 24 to prevent the second sealing gasket 28 from falling off, which effectively prevents cooling water leakage and improves the sealing performance and reliability of the joint.

[0021] The inner wall of the rotating shaft 5 is provided with a rotating shaft inner protrusion 31 at intervals, which increases the residence time of cooling water on the inner wall of the rotating shaft 5 and improves the cooling effect.

[0022] The shaft end cap 7 is threaded to the outer wall of the end of the shaft 5, which facilitates disassembly and reduces maintenance time and cost.

[0023] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model are included within the protection scope of the present utility model.

Claims

1. A miniature geared motor rotor, comprising a rotor shaft assembly (1), an iron core assembly (2) sleeved on the rotor shaft assembly (1), and a rotor bearing (3), characterized in that: The rotor shaft assembly (1) includes a shaft (5), a shaft inner core (6), and a shaft end cap (7). One end of the shaft (5) is provided with an inner core insertion hole (8) for inserting the shaft inner core (6). The bottom of the inner core insertion hole (8) is provided with an inner core mating seat (9). The inner core mating seat (9) is provided with a mating seat threaded hole (10). The shaft inner core (6) includes an inner core body (12), an inner core receiving boss (13) placed on the inner core mating seat (9), and an inner core threaded mounting part (14) threadedly connected to the mating seat threaded hole (10). A rotor water inlet channel (16) is formed between the inner core insertion hole (8) and the outer wall of the inner core body (12). The outer wall of the shaft (5) is provided with a shaft water inlet hole (17) communicating with the rotor water inlet channel (16). The inner core body (12) is provided with an inner core water outlet hole (18). The outer wall of the inner core body (12) is provided with an inner core connecting hole (19) at intervals around the inner core receiving boss (13) to connect the inner core water outlet hole (18) with the rotor water inlet channel (16). The shaft end cover (7) is provided on the end of the shaft (5). The shaft end cover (7) includes an end cover end (21). The end cover end (21) is provided with an end cover inner post (22). The end cover inner post (22) is provided with an end cover docking hole (23) for the shaft inner core (6) to pass through.

2. The miniature geared motor rotor according to claim 1, characterized in that: The inner core receiving boss (13) is provided with an inner core arc transition groove (26).

3. The miniature geared motor rotor according to claim 1, characterized in that: The rotor shaft assembly (1) includes a first sealing gasket (27), and a shaft positioning groove (30) for mounting the first sealing gasket (27) is formed between the inner core mating seat (9) and the inner wall of the shaft (5).

4. The miniature geared motor rotor according to claim 1, characterized in that: The rotor shaft assembly (1) further includes a second sealing gasket (28), which is sleeved on the inner post (22) of the end cap. The end of the inner post (22) of the end cap is provided with an end cap limiting flange (24) to prevent the second sealing gasket (28) from falling off.

5. The miniature geared motor rotor according to claim 1, characterized in that: The inner wall of the rotating shaft (5) is provided with a rotating shaft inner protrusion (31) at intervals.

6. The miniature geared motor rotor according to claim 1, characterized in that: The shaft end cap (7) is threaded to the outer wall of the end of the shaft (5).

Images