High-efficiency compact starting motor

Abstract

The utility model discloses a high-efficiency compact starting motor, which relates to the technical field of motors and comprises a casing, a front end cover and a rear end cover are respectively clamped at two ends of the casing, a screw is arranged on the front end cover in a threaded manner, and a screw hole matched with the screw in a threaded manner is arranged on the rear end cover. Through the arrangement of the rotor body, the two punching sheets, the plurality of copper wires, the plurality of wiring grooves and the plurality of S-shaped insulation paper, the arrangement of the S-shaped insulation paper increases the wiring grooves without increasing the size of the rotor body, so that two copper wires can pass through each wiring groove, and the number of the S-shaped insulation paper is reduced. According to the utility model, the copper wire is arranged in the motor, the full slot rate of the copper wire is ensured to reach 75-85%, the efficiency of the motor is greatly improved under the condition of ensuring that the motor has a smaller volume, and the S-shaped insulation paper is arranged, so that the copper wire forms two circles and does not interfere with each other, and the safety of the motor is ensured.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a high-efficiency, compact starter motor. Background Technology

[0002] With the rapid development of microelectromechanical systems, portable electronic devices, and automated equipment, compact drive devices are widely used in consumer electronics, medical devices, industrial robots, and other fields. Traditional micro motors generally adopt the interaction principle of permanent magnets and electromagnetic coils, and their typical structure includes components such as stator assembly, rotor assembly, commutation mechanism, and support housing.

[0003] The spatial layout of electromagnetic components in existing technologies lacks systematic optimization. There are ineffective gaps between the winding ends and the yoke, resulting in insufficient power density per unit volume and low space utilization of the motor. Although increasing the amount of wiring can improve motor efficiency, it can easily lead to copper wire interference and cause motor overheating. Utility Model Content

[0004] This utility model provides a solution that is significantly different from existing technologies, addressing the problem that existing technologies are too simplistic. Specifically, the purpose of this utility model is to provide a high-efficiency, compact starter motor to solve the problems mentioned in the background.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency compact starter motor, comprising a housing, with a front cover and a rear cover respectively snapped onto both ends of the housing. A screw is threaded onto the front cover, and a threaded hole mates with the screw on the rear cover. A carbon brush holder is fixedly mounted inside the rear cover, and carbon brush modules are arrayed on the carbon brush holder. An output shaft is rotatably mounted at the center of the front and rear covers. A sealing ring is fixedly mounted inside the front cover. A rotor module is mounted on the upper limit of the output shaft, and a commutator is fixedly sleeved on the output shaft near the carbon brush modules.

[0006] Preferably, oil seals are provided at the connection points of the front end cover and the rear end cover with the output shaft, and a first sealing ring is provided at the connection points of the housing with the front end cover and the rear end cover.

[0007] Preferably, the housing contains a plurality of magnets arranged in a circular array inside.

[0008] Preferably, the rotor module includes a rotor body, two laminations, several copper wires, several wiring slots, and several S-shaped insulating papers. The rotor body is fixedly mounted on the output shaft. The two laminations are respectively fixedly mounted at both ends of the rotor body. The several wiring slots are arranged in a circular array on the rotor body and the two laminations. The several S-shaped insulating papers are arranged inside the corresponding wiring slots. The several copper wires pass through two holes in the S-shaped insulating papers in an alternating manner.

[0009] Preferably, the carbon brush module includes a plurality of carbon brush blocks and a plurality of carbon brush springs. The plurality of carbon brush blocks are arranged in a circular array and inserted into the carbon brush holder. The plurality of carbon brush springs are respectively fixedly arranged between the plurality of carbon brush blocks and the carbon brush holder.

[0010] Preferably, the rear cover is provided with a positive terminal outlet, which is electrically connected to the commutator.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] (1) This utility model achieves the goal of increasing the wiring slots by setting up a rotor body, two laminations, several copper wires, several wiring slots and several S-shaped insulating paper without increasing the volume of the rotor body. This allows two copper wires to pass through each wiring slot, ensuring that the full slot rate of the copper wires reaches between 75% and 85%. This significantly improves the efficiency of the motor while ensuring that the motor has a small volume. Furthermore, the setting of the S-shaped insulating paper ensures that the copper wires form two loops without interference, thus ensuring the safety of the motor. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the fan structure of this utility model;

[0015] Figure 3 This is a cross-sectional view of the internal structure of the fan in this utility model;

[0016] Figure 4 This is a cross-sectional view of the oil replenishment mechanism of this utility model;

[0017] Figure 5 This is a schematic diagram of the internal structure of the dust collection mechanism of this utility model;

[0018] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0019] In the diagram: 1. Housing; 2. Front cover; 3. Rear cover; 4. Positive terminal post; 5. Screw; 6. Output shaft; 7. Sealing ring; 8. Oil seal; 9. Magnet; 10. First sealing ring; 11. Commutator; 12. Carbon brush bracket; 13. Carbon brush spring; 14. Carbon brush block; 15. Lamination; 16. Copper wire; 17. Wiring groove; 18. S-shaped insulating paper; 19. Rotor body. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-6 This utility model provides an embodiment of a high-efficiency compact starter motor, comprising a housing 1, with a front cover 2 and a rear cover 3 respectively snapped onto both ends of the housing 1. The front cover 2 is threaded with screws 5, and the rear cover 3 is provided with screw holes that engage with the screws 5. A carbon brush holder 12 is fixedly disposed inside the rear cover 3, and carbon brush modules are arrayed on the carbon brush holder 12. An output shaft 6 is rotatably disposed at the center of the front cover 2 and the rear cover 3. A sealing ring 7 is fixedly disposed inside the front cover 2. A rotor module is disposed at the upper limit of the output shaft 6, and a commutator 11 is fixedly sleeved on the output shaft 6 near the carbon brush modules.

[0022] Specifically, oil seals 8 are provided at the connection points between the front cover 2 and the rear cover 3 and the output shaft 6, and a first sealing ring 10 is provided at the connection points between the housing 1 and the front cover 2 and the rear cover 3.

[0023] Specifically, the housing 1 has several magnets 9 arranged in a circular array inside.

[0024] Specifically, the rotor module includes a rotor body 19, two laminations 15, several copper wires 16, several wiring slots 17, and several S-shaped insulating papers 18. The rotor body 19 is fixedly mounted on the output shaft 6. The two laminations 15 are respectively fixedly mounted at both ends of the rotor body 19. The wiring slots 17 are arranged in a circular array on the rotor body 19 and the two laminations 15. The S-shaped insulating papers 18 are disposed inside the corresponding wiring slots 17. The copper wires 16 are staggered through the two holes of the S-shaped insulating papers 18. By staggering the insertion of the copper wires 16 into the two holes of the S-shaped insulating papers 18, the copper wires 16 form two loops, increasing the slot fill rate of the copper wires 16 and ensuring that the copper wires 16 do not interfere with each other while maintaining the slot fill rate. Furthermore, the arrangement of the S-shaped insulating papers 18 further enhances this effect.

[0025] Specifically, the carbon brush module includes several carbon brush blocks 14 and several carbon brush springs 13. The carbon brush blocks 14 are arranged in a circular array and inserted into the carbon brush holder 12. The carbon brush springs 13 are respectively fixed between the carbon brush blocks 14 and the carbon brush holder 12. The elastic force of the carbon brush springs 13 ensures that the carbon brush blocks 14 always abut against the side wall of the commutator 11.

[0026] Specifically, the rear cover 3 is provided with a positive terminal post 4, which is electrically connected to the commutator 11.

[0027] Working principle: By energizing the positive terminal 4, the current flows along the commutator 11 to the rotor body 19, causing the rotor body 19 to form an electromagnet. Under the action of the magnet 9, the rotor body 19 rotates, driving the output shaft 6 to rotate. Because the carbon brushes, under the action of the carbon brush spring 13, abut against the commutator 11, and in conjunction with the rotation of the commutator 11, the carbon brush blocks 14 change contacts through the grooves in the commutator 11, thereby commutating the current. Furthermore, a wiring groove 17 is provided between the rotor bodies 19, and an S-shaped insulating paper 18 is placed inside, allowing the copper wires to... The arrangement of the S-shaped insulating paper 18 forms two rings, increasing the number of wiring slots 17 while avoiding mutual interference between the copper wires 16. This achieves the goal of increasing the number of wiring slots 17 without increasing the volume of the rotor body 19, allowing each wiring slot 17 to pass through two copper wires 16. This ensures that the full slot rate of the copper wires 16 reaches between 75% and 85%, significantly improving the efficiency of the motor while maintaining a small motor size. Furthermore, the S-shaped insulating paper 18 ensures that the copper wires 16 form two rings without interference, guaranteeing the safety of the motor.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-efficiency compact starter motor, comprising a housing (1), wherein a front cover (2) and a rear cover (3) are respectively snapped onto both ends of the housing (1), characterized in that: The front cover (2) is threaded with a screw (5), the rear cover (3) is threaded with a screw hole that engages with the screw (5), a carbon brush bracket (12) is fixedly installed inside the rear cover (3), a carbon brush module is arrayed on the carbon brush bracket (12), an output shaft (6) is rotatably installed at the center of the front cover (2) and the rear cover (3), a sealing ring (7) is fixedly installed inside the front cover (2), a rotor module is installed at the upper limit of the output shaft (6), and a commutator (11) is fixedly sleeved on the output shaft (6) near the carbon brush module.

2. The high-efficiency compact starter motor according to claim 1, characterized in that: Oil seals (8) are provided at the connection points between the front cover (2) and the rear cover (3) and the output shaft (6), and a first sealing ring (10) is provided at the connection points between the housing (1) and the front cover (2) and the rear cover (3).

3. The high-efficiency compact starter motor according to claim 1, characterized in that: The casing (1) contains a number of magnets (9) arranged in a circular array inside.

4. A high-efficiency compact starter motor according to claim 2, characterized in that: The rotor module includes a rotor body (19), two laminations (15), several copper wires (16), several wiring slots (17), and several S-shaped insulating papers (18). The rotor body (19) is fixedly mounted on the output shaft (6). The two laminations (15) are fixedly mounted at both ends of the rotor body (19). The several wiring slots (17) are arranged in a circular array on the rotor body (19) and the two laminations (15). The several S-shaped insulating papers (18) are arranged inside the corresponding wiring slots (17). The several copper wires (16) pass through the two holes of the S-shaped insulating paper (18) in an alternating manner.

5. A high-efficiency compact starter motor according to claim 1, characterized in that: The carbon brush module includes several carbon brush blocks (14) and several carbon brush springs (13). The several carbon brush blocks (14) are arranged in a circular array and inserted into the carbon brush holder (12). The several carbon brush springs (13) are respectively fixed between the several carbon brush blocks (14) and the carbon brush holder (12).

6. A high-efficiency compact starter motor according to claim 1, characterized in that: The rear cover (3) is plugged in with a positive terminal post (4), which is electrically connected to the commutator (11).

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