Coreless motor
By designing the combination of the dial ring and the repair ring in the hollow cup motor, repair without disassembly of the winding is achieved, the problem of winding expansion and deformation is solved, the service life of the brush is extended and the internal structure of the motor is protected.
Patent Information
- Application Number
- CN202510561755.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2025-08-12
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The windings of existing hollow cup motors are prone to expansion and deformation when rotating at high speed. The traditional repair method requires the removal of the windings, which is complicated and damages the internal structure.
A hollow cup motor is designed, which drives the angle ring and the large gear to rotate simultaneously through the ring, and drives the repair ring to move in the winding direction. The repair ring and the winding thread cooperate to achieve winding repair without disassembly.
The repair of the winding is achieved without disassembling the winding, extending the use cycle of the brush, avoiding damage to the internal structure, and ensuring the safety of the repair process and the durability of the brush.
Smart Images
Figure CN120474259A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of motors, and more particularly to a coreless motor. Background Art
[0002] Coreless motors are categorized as brushed and brushless. The operating principle of a brushless coreless motor is that current flowing through the coreless windings generates a magnetic field around the windings. This magnetic field interacts with the magnetic field of the stator's permanent magnets, generating torque and thus rotating the rotor. The coreless rotor windings are typically made of highly conductive enameled wire, such as copper or aluminum, to reduce resistance, improve power transmission efficiency, and enhance motor performance. Coreless motors are relatively simple in structure, low in cost, and offer simple control methods, making them easy to implement for various control requirements. Therefore, they are widely used in industrial automation.
[0003] In existing technology, the windings of coreless rotors lack support, resulting in weak resistance to centrifugal forces and prone to expansion and deformation under high-speed rotation. Therefore, to maintain the excellent performance of coreless motors, the windings must be repaired during maintenance. Traditionally, this requires individual removal and repair of the windings, a cumbersome maintenance process that is both time-consuming and labor-intensive. Furthermore, repeated removal of the rotor windings can cause irreversible damage to the delicate internal structure. Summary of the Invention
[0004] In view of the deficiencies in the prior art, the present invention aims to provide a coreless motor.
[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions: a hollow cup motor, comprising a front end cover and a rear end cover, the front end cover and the rear end cover being connected by a casing, a main shaft being rotatably mounted at the center of the front end cover and the rear end cover, the main shaft being provided with a rotor group, the rotor group comprising a turntable, a winding and a converter, the turntable being fixedly mounted on the main shaft, the winding being vertically arranged on one side of the turntable, and the converter being vertically arranged on the other side of the turntable; an angular ring being rotatably mounted on the casing, four screws being rotatably mounted on the front end cover and located inside the casing along the circumferential direction, a small gear being provided at the end of the screw, a large gear being provided at the center of the four small gears, the four small gears being meshed with the large gear together, the large gear being fixedly mounted on the angular ring, and the screw being rotatably mounted on a rotating seat, the rotating seat being fixed on the inner wall of the casing, a repair ring for repairing the winding being provided inside the casing and between the front end cover and the rotating seat, the hollow circle diameter of the repair ring being equal to the diameter of the winding, and the repair ring forming a threaded fit with the four large gears.
[0006] As a preferred technical solution of the present invention, two bridge connectors are symmetrically installed on the cylindrical side of the casing, and a ring gap is provided on the casing between the two connection points of the bridge connector. The angular ring extends to the outside of the casing through the ring gap. A dial ring is provided on the angular ring. The dial ring is rotatably connected to the outer wall of the casing, and the dial ring and the outer wall of the casing are tightly sealed.
[0007] As a preferred technical solution of the present invention, the outer side surface of the shift ring is provided with a pattern for increasing friction.
[0008] As a preferred technical solution of the present invention, the repair ring is provided with a chamfer to facilitate contact with the winding.
[0009] As a preferred technical solution of the present invention, two conducting components are provided on the rear end cover, and the conducting components include a terminal pole and a brush. One end of the terminal pole extends to the outside of the casing, and the other end of the terminal pole is connected to a sliding guide. The sliding guide is embedded in the rear end cover and is located on the side inside the casing. The brush is connected by a brush stand and a brush ring. The brush stand is in contact with the sliding guide, and the side surface of the brush ring is in contact with the converter.
[0010] As a preferred technical solution of the present invention, the guide assembly also includes a round body, which is installed in the middle part of the brush, and a rotating shaft is vertically provided on the round body. The middle part of the rotating shaft is rotatably provided on the slide, and the slide is provided on the rear end cover. The rotating shaft is connected to the inner ring of the one-way bearing, and two arc pieces are symmetrically installed on the outer ring of the one-way bearing. The arc pieces are provided with inclined grooves, and a square body is provided on the side of the arc piece. The side of the square body is provided with a pin that slides with the inclined groove. The bottom surface of the square body is vertically provided with a sliding shaft, and the two sliding shafts are slidably provided on the slide together. A spring 1 is provided on the outer sleeve of the sliding shaft, and the two ends of the spring 1 are respectively connected to the square body and the slide.
[0011] As a preferred technical solution of the present invention, the slide is slidably arranged on the rear end cover, and a connecting plate is commonly connected between the corresponding cubes on the two guide assemblies. A telescopic shaft is connected between the connecting plate and the casing. A spring 2 is provided on the outer sleeve of the telescopic shaft. The two ends of the spring 2 are respectively connected to the connecting plate and the casing. Two inclined slides are symmetrically installed on the side of the connecting plate away from the center of the casing. A sliding table is slidably provided in the inclined slide, and the two slides are respectively fixed on the two slides. Both ends of the connecting plate are provided with elastic plates for contacting the repair ring.
[0012] As a preferred technical solution of the present invention, screws for fixing the shift ring are provided on the outside of the bridge connecting piece.
[0013] The beneficial effects of the present invention compared with the prior art are: (1) The present invention drives the shifting ring to rotate synchronously with the angular ring and the large gear. The large gear drives the four small gears to rotate synchronously at the same time. The four screws also rotate synchronously. The four screws simultaneously drive the repair ring to move in the direction of the winding. The diameter of the hollow circle of the repair ring is equal to the diameter of the winding. When the repair ring reciprocates on the winding, the repair ring brings the expanded winding toward the center, that is, the winding can be repaired without disassembling the winding.
[0014] (2) When the repair ring of the present invention repairs the winding, when the repair ring moves toward the winding, the repair ring separates from the elastic plate, the spring 2 provides elastic force, the telescopic shaft extends, and the connecting plate moves away from the slide. During this process, the slide slides in the opposite direction in the inclined slide seat, so the two slides slide away from the converter at the same time, and the converter and the brush ring separate, so that the winding must be in a power-off state during the repair process, ensuring the safety of the repair work.
[0015] (3) After the repair ring of the present invention repairs the winding, the brush ring is replaced in another position to contact the winding, avoiding the need to replace the entire brush due to increased wear of one position of the brush ring, thereby extending the cycle of replacing the brush and disassembling the motor.
[0016] (4) After the repair ring of the present invention repairs the winding, the pressure applied by the repair ring to the elastic plate is maintained, so that the connecting plate tends to move toward the slide, and the slide also tends to move toward the converter. Therefore, the brush ring can be pressed tightly against the converter to ensure good conductivity. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic structural diagram of the present invention as a whole.
[0018] Figure 2 It is a schematic structural diagram of the cross section of the casing of the present invention.
[0019] Figure 3 It is a structural schematic diagram of the overall cross-section of the present invention.
[0020] Figure 4 This is a structural diagram of the installation of the repair ring of the present invention.
[0021] Figure 5 for Figure 4 A partial enlarged view of point A in the middle.
[0022] Figure 6 This is a schematic structural diagram of the brush installation of the present invention.
[0023] Figure 7 It is a structural schematic diagram of the brush of the present invention.
[0024] Figure 8 It is a structural schematic diagram of the joint plate installation of the present invention.
[0025] Figure 9 for Figure 8 A partial enlarged view of point B in the middle.
[0026] Figure 10 This is a schematic structural diagram of the repair ring and elastic plate of the present invention.
[0027] Reference numerals: 1-front cover; 2-rear cover; 3-housing; 301-bridge connection; 302-ring gap; 4-main shaft; 5-rotor assembly; 501-turntable; 502-winding; 503-converter; 6-angle ring; 7-screw; 8-pinion; 9-gear; 10-swivel seat; 11-repair ring; 1101-chamfer; 12-shift ring; 13-terminal pole; 14-sliding guide ;15-brush;1501-brush stand;1502-brush ring;16-round body;17-rotating shaft;18-one-way bearing;19-arc piece;1901-bevel groove;20-square body;21-pull pin;22-sliding shaft;23-slide;24-spring 1;25-connecting plate;26-telescopic shaft;27-spring 2;28-oblique slide seat;29-slide;30-elastic plate;31-screw. DETAILED DESCRIPTION
[0028] In the present invention, unless otherwise specified, directions such as "up" and "down" are generally used with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" are generally used with respect to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.
[0029] Example: See Figure 1-10 Structural schematic diagram, a hollow cup motor, including a front end cover 1 and a rear end cover 2, the front end cover 1 and the rear end cover 2 are connected by a casing 3, a main shaft 4 is rotatably mounted at the center of the front end cover 1 and the rear end cover 2, a rotor group 5 is provided on the main shaft 4, the rotor group 5 includes a turntable 501, a winding 502 and a converter 503, the turntable 501 is fixedly mounted on the main shaft 4, the winding 502 is vertically arranged on one side of the turntable 501, and the converter 503 is vertically arranged on the other side of the turntable 501.
[0030] A stator permanent magnet is vertically mounted on the side of the front cover 1 inside the housing 3. The stator permanent magnet has a through hole along its axis. The main shaft 4 passes through the through hole of the stator permanent magnet. The winding 502 is located outside the stator permanent magnet.
[0031] An angular ring 6 is rotatably provided on the casing 3, and four screws 7 are provided on the front end cover 1 and located inside the casing 3 and rotate evenly along the circumferential direction. A small gear 8 is provided at the end of the screw 7, and a large gear 9 is provided at the center of the four small gears 8. The four small gears 8 are meshed with the large gear 9. The large gear 9 is fixedly mounted on the angular ring 6, and the screw 7 is rotatably provided on the swivel seat 10. The swivel seat 10 is fixed on the inner wall of the casing 3. A repair ring 11 for repairing the winding 502 is provided inside the casing 3 and between the front end cover 1 and the swivel seat 10. The diameter of the hollow circle of the repair ring 11 is equal to the diameter of the winding 502. The repair ring 11 and the four large gears 9 form a threaded fit.
[0032] Specifically, when the main shaft 4 rotates at high speed, the rotor assembly 5 rotates along with it, causing the winding 502 to expand and deform due to centrifugal force. Rotating the angular ring 6 drives the large gear 9 to rotate synchronously, which in turn drives the four small gears 8 and four screws 7 to rotate synchronously. These four screws 7 simultaneously drive the repair ring 11 toward the winding 502. As the repair ring 11 reciprocates on the winding 502, it pulls the expanded winding 502 toward the center, completing the repair of the winding 502.
[0033] Two bridge connectors 301 are symmetrically installed on the cylindrical side of the casing 3, and a ring gap 302 is provided on the casing 3 between the two connection points of the bridge connector 301. The angular ring 6 extends to the outside of the casing 3 through the ring gap 302. The angular ring 6 is provided with a dial ring 12, which is rotatably connected to the outer wall of the casing 3. The dial ring 12 and the outer wall of the casing 3 are tightly sealed, which facilitates improving the protection level of the casing 3. The outer side surface of the dial ring 12 is provided with a pattern for increasing friction.
[0034] Specifically, when performing equipment maintenance, the dial ring 12 is rotated, and the dial ring 12 drives the angle ring 6 to rotate synchronously, so that the winding 502 can be repaired without disassembling the motor.
[0035] The repair ring 11 is provided with a chamfer 1101 for facilitating contact with the winding 502 . The chamfer 1101 facilitates the winding 502 to enter the repair ring 11 and avoids scratching the winding 502 .
[0036] Two conducting components are provided on the rear end cover 2, and the conducting components include a terminal pole 13 and a brush 15. One end of the terminal pole 13 extends to the outside of the housing 3, and the other end of the terminal pole 13 is connected to a sliding guide 14. The sliding guide 14 is embedded in the rear end cover 2 and is located on the side surface inside the housing 3. The brush 15 is connected by a brush base 1501 and a brush ring 1502. The brush base 1501 is in contact with the sliding guide 14, and the side surface of the brush ring 1502 is in contact with the converter 503.
[0037] Specifically, the turntable 501 and the converter 503 are conductive, the terminal 13 and the sliding guide 14 are made of conductive material, the terminal 13 of the two conductive components are connected to the positive and negative poles of the power supply, and the current is transmitted to the converter 503 through the sliding guide 14, the brush base 1501, and the brush ring 1502 in sequence, so that the winding 502 can be energized.
[0038] Considering that when the brush ring 1502 is always in contact with the converter 503 at a fixed position, the brush ring 1502 may be damaged by friction. The conductive assembly also includes a round body 16, which is mounted in the middle of the brush 15. A rotating shaft 17 is vertically mounted on the round body 16. The middle portion of the rotating shaft 17 is rotatably mounted on the slide 23, which is mounted on the rear end cover 2. The rotating shaft 17 is connected to the inner ring of the one-way bearing 18. Two arc pieces 19 are symmetrically mounted on the outer ring of the one-way bearing 18. The arc pieces 19 are provided with inclined grooves 1901. A square body 20 is mounted on the side of the arc piece 19. A detent pin 21 is mounted on the side of the square body 20 to form a sliding fit with the inclined groove 1901. A sliding shaft 22 is vertically mounted on the bottom surface of the square body 20. The two sliding shafts 22 are slidably mounted on the slide 23. A spring 24 is mounted on the outer sleeve of the sliding shaft 22. The ends of the spring 24 are respectively connected to the square body 20 and the slide 23.
[0039] The one-way bearing 18 consists of an inner ring and an outer ring. When the outer ring of the one-way bearing 18 rotates forward, the inner ring of the one-way bearing 18 rotates forward accordingly; when the outer ring of the one-way bearing 18 rotates backward, the inner ring of the one-way bearing 18 stops rotating.
[0040] Specifically, when the two blocks 20 on the guide assembly simultaneously move toward the carriage 23, spring 1 24 is compressed, causing the detent pin 21 to move synchronously with the blocks 20 and slide forward in the inclined slot 1901. Because the inclined slot 1901 is arranged at an angle relative to the axis of the rotating shaft 17, the detent pin 21 drives the arc piece 19 and the outer ring of the one-way bearing 18 to rotate forward about the rotating shaft 17. The inner ring of the one-way bearing 18 rotates forward synchronously with the rotating shaft 17, causing the rotating shaft 17 to rotate with the brush ring 1502. As a result, the brush ring 1502 moves to another position to contact the winding 502, preventing increased wear on the previous position of the brush ring 1502 and the need to replace the entire brush 15. Spring 1 24 provides the elastic force to drive the two blocks 20 on the guide assembly simultaneously away from the carriage 23. The detent pin 21 drives the arc piece 19 and the outer ring of the one-way bearing 18 to rotate in the opposite direction, while the inner ring of the one-way bearing 18 does not rotate.
[0041] The slide 23 is slidably arranged on the rear end cover 2, and a connecting plate 25 is commonly connected between the corresponding cubes 20 on the two guide assemblies. A telescopic shaft 26 is connected between the connecting plate 25 and the casing 3. A spring 27 is provided on the outer sleeve of the telescopic shaft 26. The two ends of the spring 27 are respectively connected to the connecting plate 25 and the casing 3. Two inclined slides 28 are symmetrically installed on the side of the connecting plate 25 away from the center of the casing 3. A slide 29 is slidably provided in the inclined slide 28. The two slides 29 are respectively fixed on the two slides 23. Both ends of the connecting plate 25 are provided with an elastic plate 30 for contacting the repair ring 11.
[0042] Specifically, when the repair ring 11 repairs the winding 502, when the repair ring 11 moves toward the winding 502, the repair ring 11 separates from the elastic plate 30, the spring 27 provides elastic force, the telescopic shaft 26 extends, that is, the connecting plate 25 moves away from the slide 23. During this process, the slide 29 slides in the opposite direction in the inclined slide 28, so the two slides 23 slide away from the converter 503 at the same time, and the converter 503 and the brush ring 1502 are separated, so that the winding 502 must be in a power-off state during the repair process to ensure the safety of the repair work. At the same time, the spring 1 24 extends. The cube 20 moves in the direction away from the slide 23; when the repair ring 11 completes the repair of the winding 502, the repair ring 11 contacts the elastic plate 30 again, thereby driving the connecting plate 25 to move in the direction of the slide 23, the spring 27 is compressed, the telescopic shaft 26 is shortened, and the connecting plate 25 drives the cube 20 to move in the direction of the slide 23, and the slide 29 slides forward in the inclined slide 28, so that the two slides 23 move in the direction of the converter 503 at the same time, and the converter 503 contacts the brush ring 1502 again, so that the converter 503 is powered again, and at the same time the spring 1 24 is compressed, and the cube 20 moves in the direction of the slide 23. When the repair ring 11 contacts the elastic plate 30 again, the repair ring 11 applies pressure to the elastic plate 30, causing the elastic plate 30 to undergo elastic deformation. Due to the self-locking between the repair ring 11 and the screw 7, applying pressure to the repair ring 11 cannot drive the screw 7 to rotate. Therefore, after loosening the shift ring 12, the pressure applied by the repair ring 11 to the elastic plate 30 can be maintained. Therefore, the connecting plate 25 tends to move toward the slide 23, and the slide 23 also tends to move toward the direction of the converter 503. The brush ring 1502 is pressed tightly against the converter 503.
[0043] A screw 31 for fixing the dial ring 12 is provided on the outside of the cross-bridge connection 301. The screw 31 penetrates the cross-bridge connection 301 and contacts the dial ring 12. When the dial ring 12 needs to be rotated, the screw 31 is loosened to separate the end of the screw 31 from the dial ring 12; when the dial ring 12 does not need to be rotated, the screw 31 is tightened to make the end of the screw 31 contact with the dial ring 12 to lock the dial ring 12.
[0044] Working principle: When performing maintenance on the equipment, loosen the screw 31 to separate the end of the screw 31 from the dial ring 12. Manually rotate the dial ring 12, which drives the angle ring 6 and the large gear 9 to rotate synchronously. The large gear 9 also drives the four small gears 8 to rotate synchronously. The four screws 7 also rotate synchronously. The four screws 7 simultaneously drive the repair ring 11 to move toward the winding 502. The diameter of the hollow circle of the repair ring 11 is equal to the diameter of the winding 502. When the repair ring 11 reciprocates on the winding 502, the repair ring 11 brings the expanded winding 502 toward the center, thus completing the repair of the winding 502.
[0045] When the repair ring 11 repairs the winding 502, when the repair ring 11 moves toward the direction of the winding 502, the repair ring 11 separates from the elastic plate 30, the spring 27 provides elastic force, and the telescopic shaft 26 extends, that is, the connecting plate 25 moves in the direction away from the slide 23. During this process, the slide 29 slides in the opposite direction in the inclined slide 28, so the two slides 23 slide in the direction away from the converter 503 at the same time, and the converter 503 and the brush ring 1502 are separated, so that the winding 502 must be in a power-off state during the repair process to ensure the safety of the repair work. At the same time, the spring 1 24 extends, and the square body 20 moves in the direction away from the slide 23. The pin 21 drives the arc piece 19 and the outer ring of the one-way bearing 18 to rotate in the opposite direction, and the inner ring of the one-way bearing 18 does not rotate.
[0046] When the repair ring 11 has repaired the winding 502, the dial ring 12 is rotated to make the repair ring 11 contact with the elastic plate 30 again, driving the connecting plate 25 to move toward the slide 23. The spring 27 is compressed, the telescopic shaft 26 is shortened, and the connecting plate 25 drives the cube 20 to move toward the slide 23. The slide 29 slides forward in the inclined slide seat 28, so that the two slides 23 move toward the converter 503 at the same time. The converter 503 contacts the brush ring 1502 again, so that the converter 503 is powered again. At the same time, the spring 1 24 is compressed, and the cube 20 moves toward the slide 23. , the push pin 21 moves synchronously with the cube 20, and the push pin 21 slides positively in the inclined slot 1901, so the push pin 21 drives the arc piece 19 and the outer ring of the one-way bearing 18 to rotate positively around the rotating shaft 17, and the inner ring of the one-way bearing 18 and the rotating shaft 17 rotate positively synchronously, and the rotating shaft 17 rotates with the brush ring 1502, so the brush ring 1502 replaces another position to contact the winding 502, avoiding the increased wear of one position of the brush ring 1502 and the need to replace the entire brush 15, thereby extending the cycle of replacing the brush 15 and disassembling the motor.
[0047] When the repair ring 11 contacts the elastic plate 30 again, it applies pressure to the elastic plate 30, causing the elastic plate 30 to elastically deform. Due to the self-locking between the repair ring 11 and the screw 7, applying pressure to the repair ring 11 does not drive the screw 7 to rotate. Therefore, after loosening the shift ring 12, the pressure applied by the repair ring 11 on the elastic plate 30 can be maintained, causing the connecting plate 25 to move toward the slide 23, and the slide 23 to move toward the converter 503. Therefore, the brush ring 1502 can be pressed against the converter 503, ensuring good electrical conductivity. At the same time, tighten the screw 31 so that the end of the screw 31 contacts the shift ring 12, locking the shift ring 12 and further preventing the repair ring 11 from moving.
[0048] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications based on the present invention to solve substantially the same technical problems and achieve substantially the same technical effects are all included in the scope of protection of the present invention.
Claims
1. A coreless cup motor comprising a front cover (1) and a rear cover (2), wherein the front cover (1) and the rear cover (2) are connected via a housing (3), and a main shaft (4) is rotatably mounted at the center of the front cover (1) and the rear cover (2), characterized in that: The main shaft (4) is provided with a rotor assembly (5), the rotor assembly (5) comprising a turntable (501), a winding (502) and a converter (503), the turntable (501) being fixedly mounted on the main shaft (4), the winding (502) being vertically arranged on one side of the turntable (501), and the converter (503) being vertically arranged on the other side of the turntable (501); The housing (3) is provided with an angular ring (6) for rotation. Four screws (7) are provided on the front cover (1) and are located inside the housing (3) and are rotated uniformly along the circumferential direction. A small gear (8) is provided at the end of the screw (7). A large gear (9) is provided at the center of the four small gears (8). The four small gears (8) are mutually meshed with the large gear (9). The large gear (9) is fixedly mounted on the angular ring (6). The screw (7) is rotatably provided on a rotating seat (10). The rotating seat (10) is fixedly provided on the inner wall of the housing (3). A repair ring (11) for repairing the winding (502) is provided inside the housing (3) and between the front cover (1) and the rotating seat (10). The diameter of the hollow circle of the repair ring (11) is equal to the diameter of the winding (502). The repair ring (11) and the four large gears (9) are threadedly matched.
2. The coreless motor according to claim 1, characterized in that: Two bridge connectors (301) are symmetrically mounted on the cylindrical side of the housing (3), and a ring gap (302) is provided on the housing (3) between two connection points of the bridge connector (301). The angular ring (6) extends to the outside of the housing (3) through the ring gap (302). The angular ring (6) is provided with a shift ring (12), which is rotatably connected to the outer wall of the housing (3), and a tight seal is formed between the shift ring (12) and the outer wall of the housing (3).
3. The coreless motor according to claim 2, characterized in that: The outer side surface of the shift ring (12) is provided with a pattern for increasing friction.
4. The coreless motor according to claim 2, characterized in that: The repair ring (11) is provided with a chamfer (1101) for facilitating contact with the winding (502).
5. The coreless motor according to claim 2, characterized in that: The rear end cover (2) is provided with two conducting components, the conducting components including a terminal pole (13) and a brush (15), one end of the terminal pole (13) extends to the outside of the housing (3), the other end of the terminal pole (13) is connected to a sliding guide (14), the sliding guide (14) is embedded in the rear end cover (2) and is located in the side surface inside the housing (3), the brush (15) is formed by connecting a brush stand (1501) and a brush ring (1502), the brush stand (1501) contacts the sliding guide (14), and the side surface of the brush ring (1502) contacts the converter (503).
6. The coreless motor according to claim 5, characterized in that: The guide assembly further comprises a round body (16), which is mounted on the middle part of the brush (15), and a rotating shaft (17) is vertically provided on the round body (16). The middle part of the rotating shaft (17) is rotatably provided on a slide (23), and the slide (23) is provided on the rear end cover (2). The rotating shaft (17) is connected to the inner ring of the one-way bearing (18), and two arc pieces (19) are symmetrically installed on the outer ring of the one-way bearing (18). The arc piece (19) is provided with There is an inclined groove (1901), a square body (20) is provided on the side of the arc piece (19), a side of the square body (20) is provided with a pin (21) that forms a sliding fit with the inclined groove (1901), a bottom surface of the square body (20) is vertically provided with a sliding shaft (22), two sliding shafts (22) are slidably arranged on a slide (23), and a spring (24) is provided on the outer sleeve of the sliding shaft (22), and the two ends of the spring (24) are respectively connected to the square body (20) and the slide (23).
7. The coreless motor according to claim 6, characterized in that: The slide (23) is slidably arranged on the rear end cover (2), and a connecting plate (25) is commonly connected between the corresponding cubes (20) on the two guide assemblies. A telescopic shaft (26) is connected between the connecting plate (25) and the housing (3). A spring 2 (27) is provided on the outer sleeve of the telescopic shaft (26). The two ends of the spring 2 (27) are respectively connected to the connecting plate (25) and the housing (3). Two inclined slides (28) are symmetrically installed on the side of the connecting plate (25) away from the center of the housing (3). A slide (29) is slidably provided in the inclined slide (28). The two slides (29) are respectively fixed on the two slides (23). Both ends of the connecting plate (25) are provided with elastic plates (30) for contacting the repair ring (11).
8. The coreless motor according to any one of claims 2 to 7, characterized in that: The outer side of the bridge connecting member (301) is provided with a screw (31) for fixing the dial ring (12).