Miniature DC brush motor commutator

Abstract

The invention discloses a miniature DC brush motor commutator, which comprises a rotor body and a stator body, the rotor body is rotatably connected in the stator body, and one end of the rotor body is provided with a metal pole piece substrate. By arranging the placing groove, the clamping groove, the circuit connector and the positioning nut, one end of the metal pole piece body is clamped in the clamping groove through the positioning block, the circuit connector is also clamped in the clamping groove and is attached to the surface of the positioning block and the surface of the metal pole piece body, and the clamping block at the other end of the metal pole piece body is clamped by the positioning nut. The metal pole piece body is stabilized through the positioning nut, the containing groove, the clamping block and the positioning block, the metal pole piece body is not prone to loosening, the circuit connector is clamped and makes contact with the metal pole piece body to achieve electric connection, wire hanging operation is not needed, the stability of the metal pole piece body is improved, the metal pole piece body and the circuit connector can be conveniently separated, and the service life of the metal pole piece body is prolonged. When the positioning nut is rotated to be separated from the connecting disc, the metal pole piece body can be easily taken down to maintain and replace a single metal forging body.

Description

Technical Field

[0001] The present invention relates to the field of motor technology, and in particular to a miniature DC brushed motor commutator. Background Art

[0002] With the development of electrical technology, the equipment used for it has also made great progress, among which brush motors have been widely used. The brush motor was originally called a brush motor, which is a power device, and a micro DC brush motor is a type of brush motor. It is a very miniaturized brush motor, which is mainly composed of a stator and a rotor, brushes, commutator and other components. The stator generally includes a brush motor housing and a magnet, and some will add a heat sink to the housing to dissipate the heat of the brush motor; the rotor, as the rotating part of the motor, is usually composed of a core and a coil wound thereon; the commutator is located at one end of the rotor and is composed of many metal segments, and then the brush is used to exchange contact with the metal segments to change the direction of the current, so that the rotor continues to rotate.

[0003] The commutator is an important component of the brushed motor, which is used to realize the continuous rotation of the rotor. During the production process of the commutator in the prior art, when the copper wire winding is hung on the metal segment on the rotor commutator, the metal segment on the commutator may move, resulting in the failure of hanging the wire, and then causing the brushed motor to have a bad open circuit. Another situation is that the wire may have been hung, but the rotor is pulled by the movement of the metal segment, causing the brushed motor to break the wire and cause a bad open circuit.

[0004] Secondly, the entire metal segment on the micro DC brushed motor is now placed on the base in advance, and then the line is hung on one end of the metal segment, and then the machine is operated to press and fix the metal segment and the line at the joint to make the metal segment and the line stable. However, this method is not convenient for later maintenance of the commutator, and the pressed metal segment is not easy to remove, and the metal segment is deformed after pressing and firmly connected to the line, which makes it more difficult to remove a single metal segment and is not conducive to maintenance operations.

[0005] Therefore, how to provide a miniature DC brush motor commutator is a problem that those skilled in the art need to solve urgently. Summary of the invention

[0006] One purpose of the present invention is to provide a micro DC brush motor commutator, which solves the problems in the prior art that the commutator metal segment hanging wire is unstable and easily causes open circuit failure and the metal segment is not easy to be removed individually for maintenance.

[0007] A micro DC brushed motor commutator according to an embodiment of the present invention comprises a rotor body and a stator body, wherein the rotor body is rotatably connected inside the stator body, a metal pole piece substrate is arranged at one end of the rotor body, a placement slot is arranged at the side of the metal pole piece substrate, a clamping slot is arranged at a side of the placement slot close to the rotor body, a line connector and a positioning block are movably arranged inside the clamping slot, the side of the line connector is movably connected to the side of the positioning block, a metal pole piece is movably arranged inside the placement slot, the positioning block is fixed at one side of the metal pole piece, a clamping block is arranged at the other end of the metal pole piece, the clamping block is movably arranged inside the placement slot, a wire is arranged at one end of the line connector, and the wire is fixedly connected to the rotor body;

[0008] A connecting plate is arranged at one end of the metal pole piece substrate away from the rotor body, and a side of the connecting plate away from the metal pole piece substrate is rotatably connected to the inner wall of the stator body. A positioning nut is movably sleeved on the side of the connecting plate, and the positioning nut is stuck on the surface of the block.

[0009] The line connector includes an electrical connection strip and an electrical connection head. The electrical connection strip is clamped inside the slot, the electrical connection head is fixed on the top of the electrical connection strip, and the top of the electrical connection head extends to the outside of the slot after passing through the slot. The wire is fixed on a side of the electrical connection head away from the metal segment body.

[0010] A pressing block is arranged on one side of the metal segment body close to the positioning block, and the pressing block is movably fitted on the top position of the electrical connector.

[0011] The positioning nut is provided with a through slot, the connection position between the connecting plate and the stator body is movable inside the through slot, and the outer side surface of the positioning nut is provided with a hand-operated block.

[0012] A protective ring is movably sleeved on the connecting plate, and two sides of the protective ring are respectively fitted on opposite surfaces of the metal segment body and the positioning nut.

[0013] A brush assembly is arranged on the inner wall of the stator body corresponding to the position of the metal segment body, the brush assembly comprises a fixing cylinder, a brush body, a limiting groove and a placement assembly, the fixing cylinder is fixed on the inner wall of the stator body, the limiting groove is in four groups, the four groups of limiting grooves are arranged on the four sides of the fixing cylinder to connect the side of the fixing cylinder with the inner wall, the brush body moves inside the fixing cylinder, one end of the placement assembly moves inside the limiting groove and is stuck on the surface of the brush body, the other end of the brush body is attached to the surface of the metal segment body, a positioning groove is arranged on the side of the stator body corresponding to the position of the fixing cylinder, a connecting groove matching the placement assembly is arranged inside the positioning groove, the connecting groove connects the inner wall of the stator body with the positioning groove, one end of the placement assembly away from the brush body passes through the connecting groove and extends to the inside of the positioning groove, a fastener is fixed on the side of the stator body corresponding to the position of the positioning groove, the fastener positions the placement assembly on the stator body.

[0014] The placement assembly includes a stabilizing block, a positioning cylinder, four clamping plates and a spring member. The stabilizing block moves inside the positioning groove. The positioning cylinder is fixed on one side of the positioning block. The other end of the positioning cylinder passes through the connecting groove and extends to the inside of the fixing cylinder. The four clamping plates are respectively fixed on the four side surfaces of the positioning cylinder. The four clamping plates move inside the four limiting grooves respectively, and the opposite surfaces of the four clamping plates are clamped on the side surfaces of the brush body. The spring member moves inside the positioning cylinder, and one end of the spring member located inside the positioning cylinder is attached to the surface of the stabilizing block, and the other end of the spring member is attached to the end surface of the brush body.

[0015] One side of the stabilizing block extends to the outside of the positioning groove, and a protrusion is fixed on the surface of the stabilizing block outside the positioning groove. The fastener includes an annular seat and an externally threaded knob. The annular seat is fixed to the side of the stator body at a position corresponding to the positioning groove, the externally threaded knob is threadedly connected to the annular seat, and one end of the externally threaded knob is against the surface of the stabilizing block.

[0016] An electrical connection assembly is provided on the side of the fixed cylinder, and the electrical connection assembly includes a fixed block, an elastic sheet and an electric column. The fixed block is fixed to the position of the limiting groove on the side of the fixed cylinder, the elastic sheet is fixed to one side of the fixed block located at the limiting groove, the elastic sheet is movably fitted on one of the four clamping plates, the electric column is fixed to the other end of the fixed block, and the other end of the electric column passes through the stator body and extends to the outside of the stator body.

[0017] The beneficial effects of the present invention are:

[0018] By providing a placement slot, a card slot, a line connector and a positioning nut, the placement slot is used to place the metal pole piece, one end of the metal pole piece is clamped in the card slot through a positioning block, the line connector is also clamped in the card slot and fits the positioning block and the surface of the metal pole piece, and then the card block at the other end of the metal pole piece is clamped with the positioning nut, and the metal pole piece is stabilized by the positioning nut, the placement slot, the card block and the positioning block, so that the metal pole piece is not easy to loosen, and the line connector is clamped and contacts the metal pole piece to achieve electrical connection, so there is no need to hang the line, which not only improves the stability of the metal pole piece, but also achieves The line connector is clamped and in contact with the metal pole piece body to achieve electrical connection. There is no need for wire hanging operation, which is not only convenient for connection, but also easy to separate the metal pole piece body from the line connector. After the positioning nut is turned to separate from the connection disk, the metal pole piece body can be removed from the placement groove and separated from the line connector by moving the metal pole piece body. In this way, the metal pole piece body can be easily removed to repair and replace a single metal forging body, thereby achieving the effect of easy disassembly of the metal pole piece body, and solving the problems in the prior art that the unstable hanging wire of the commutator metal segment easily causes open circuit failure and the metal segment is not easy to be removed individually for repair.

[0019] By providing a brush assembly, the fasteners are opened from the outside of the stator body, and then the brush body can be taken out through the brush assembly without opening the stator body. The existing brush body replacement requires the removal of the outer shell, which makes the brush body replacement operation very complicated. The brush assembly can quickly take out the brush body without opening the stator body, thereby achieving the effect of facilitating the replacement of the brush body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 This is an overall three-dimensional flow chart of a micro DC brushed motor commutator proposed by the present invention.

[0022] Figure 2 A cross-sectional stereoscopic flow chart showing the positions of metal pole pieces and brush assemblies in a commutator of a micro DC brushed motor proposed by the present invention.

[0023] Figure 3 The present invention provides a cross-sectional three-dimensional flow chart of the positions of the metal pole piece body and the positioning nut in the commutator of a micro DC brushed motor.

[0024] Figure 4 A cross-sectional stereoscopic flow chart of the position of a brush body in a brush assembly in a commutator of a micro DC brushed motor proposed by the present invention.

[0025] Figure 5 Another cross-sectional stereoscopic flow chart of the position of a brush assembly in a commutator of a micro DC brushed motor proposed by the present invention.

[0026] Figure 6 The present invention provides a three-dimensional flow chart of the connection status of a metal pole piece body, a clamping block, a positioning block and a circuit connector in a micro DC brushed motor commutator.

[0027] Figure 7 The present invention provides a three-dimensional flow chart of placing slots, connecting plates and metal pole piece substrates in a commutator of a micro DC brushed motor.

[0028] Figure 8 A three-dimensional flow chart of an electrical connection assembly in a commutator of a micro DC brushed motor proposed by the present invention.

[0029] Fig. 9 The present invention provides a three-dimensional flow chart of a brush assembly in a commutator of a micro DC brushed motor.

[0030] Fig.10The present invention provides a flow chart of the connection status of a brush assembly and an electrical connection assembly in a commutator of a micro DC brushed motor.

[0031] Fig.11 The present invention provides a three-dimensional flow chart of a positioning nut in a commutator of a micro DC brushed motor.

[0032] The attached drawings indicate: 1. rotor body; 2. stator body; 3. metal pole piece substrate; 4. placement groove; 5. clamping groove; 6. line connector; 7. positioning block; 8. metal pole piece body; 9. clamping block; 10. wire; 11. connection plate; 12. positioning nut; 13. electrical connection clamping strip; 14. electrical connector; 15. pressure block; 16. through groove; 17. hand-operated block; 18. protective ring; 19. brush assembly; 20. fixing cylinder; 21. brush body; 22. limiting groove; 23. placement assembly; 24. positioning groove; 25. connection groove; 26. fastener; 27. stabilizing block; 28. positioning cylinder; 29. ​​splint; 30. spring member; 31. protrusion; 32. annular seat; 33. external threaded knob; 34. electrical connection assembly; 35. fixing block; 36. elastic sheet; 37. electric column. DETAILED DESCRIPTION

[0033] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0034] Example 1

[0035] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7, including a rotor body 1 and a stator body 2, the rotor body 1 is rotatably connected to the inside of the stator body 2, the stator body 2 and the rotor body 1 are prior art components, the stator body 2 is a shell and ferromagnetic on the shell, etc., which will not be described in detail here. A metal pole piece substrate 3 is provided at one end of the rotor body 1, and the metal pole piece substrate 3 is a cylindrical component for setting a metal pole piece body 8, which is used to install and fix the metal pole piece body 8. A placement groove 4 is provided on the side of the metal pole piece substrate 3, and the placement groove 4 is used to locate the position of the metal pole piece body 8, and the inside of the placement groove 4 is close to A slot 5 is provided on one side of the rotor body 1. A line connector 6 and a positioning block 7 are movable inside the slot 5. The line connector 6 and the positioning block 7 are positioned through the slot 5 to prevent the line connector 6 and the positioning block 7 from displacement and movement. The side of the line connector 6 is movably connected to the side of the positioning block 7. The line connector 6 includes an electrical connection card strip 13 and an electrical connection head 14. The electrical connection head 14 is used to contact the metal pole piece 8. The electrical connection card strip 13 is mainly for stabilizing the electrical connection head 14. The electrical connection card strip 13 is clamped inside the slot 5. The electrical connector 14 is fixed on the top of the electrical connector card strip 13, and the top of the electrical connector 14 passes through the card slot 5 and extends to the outside of the card slot 5. The electrical connector card strip 13 in the line connector 6 is stuck in the card slot 5. The electrical connector 14 is attached to the side of the metal pole piece 8 for conduction. The wire 10 is fixed on the side of the electrical connector 14 away from the metal segment body. A pressure block 15 is provided on the side of the metal segment body close to the positioning block 7. The pressure block 15 is movably attached to the top position of the electrical connector 14. The metal pole piece 8 and the positioning block 7 are movably placed inside the placement slot 4. It is fixed on one side of the metal pole piece 8, and a clamping block 9 is provided at the other end of the metal pole piece 8. The clamping block 9 moves inside the placement slot 4. Positioning blocks 7 and clamping blocks 9 are respectively provided on both sides of the metal pole piece 8. The metal block at one end is clamped in the clamping slot 5 to stabilize one end of the metal pole piece 8. The clamping block 9 is clamped by the positioning nut 12 to stabilize the other end of the metal pole piece 8, so that the metal pole piece 8 is fixed and stable. A wire 10 is provided at one end of the line connector 6. The wire 10 is fixedly connected to the rotor body 1, and the wire 10 transmits electricity to the rotor body 1;

[0036] refer to Figure 3 , Figure 4 , Figure 5 and Fig.11The end of the metal pole piece substrate 3 away from the rotor body 1 is provided with a connecting plate 11, and the side of the connecting plate 11 away from the metal pole piece substrate 3 is rotatably connected to the inner wall of the stator body 2. A positioning nut 12 is movably sleeved on the side of the connecting plate 11. The positioning nut 12 is stuck on the surface of the clamping block 9. A through groove 16 is provided on the positioning nut 12. The connection position of the connecting plate 11 and the stator body 2 is movable inside the through groove 16. A hand-operated block 17 is provided on the outer side of the positioning nut 12. A protective ring 18 is movably sleeved on the connecting plate 11. The two sides of the protective ring 18 are respectively attached to the opposite surfaces of the metal segment body and the positioning nut 12. , used to protect the surface of the metal pole piece 8 to avoid deformation under the extrusion of the positioning nut 12. It should be noted that the metal pole piece substrate 3, the connecting plate 11, the positioning nut 12 and the protective ring 18 are all insulating parts, which are not easy to cause the wire 10. During operation, first insert the electrical connection card strip 13 into the card slot 5 so that it stabilizes the electrical connector 14, and then place the metal pole piece 8 in the placement slot 4, move the metal pole piece 8 so that it moves inside the placement slot 4 and make the positioning block 7 stuck in the card slot 5 and lower on the electrical connection card strip 13, so that the electrical connection card strip 13 can be further stabilized, and when the positioning block 7 is lowered After the electrical connection card strip 13 is in position, the pressing block 15 will also press on the electrical connection head 14 to stabilize the electrical connection head 14 and increase the contact area between the metal pole piece 8 and the electrical connection head 14. Then, the protective ring 18 is put on the surface of the connection disk 11, and then the positioning nut 12 is rotated and put on the connection disk 11 and squeezes the protective ring 18, so that the positioning nut 12 squeezes the metal pole piece 8 through the protective ring 18, so that the block 9 of the metal pole piece 8 is pressed by the positioning nut 12, and the positioning nut 12 squeezes the metal pole piece 8 during movement to make it fit tightly on the electrical connection head 14, so that power can be turned on, so there is no need to move the conductor The wire 10 is hung on the metal pole piece 8, and there is no need for wire hanging operation, so it is not easy for the metal pole piece 8 to move. Electricity can be turned on by contact with the electrical connector 14, and the metal pole piece 8 is clamped in the slot 5 and the placement slot 4 by the positioning nut 12, which improves the stability of the metal pole piece 8 and makes it difficult to move. When removing it, the positioning nut 12 is rotated in the reverse direction to separate it from the connecting plate 11, and then the metal pole piece 8 is moved away from the electrical connector 14 to drive the positioning block 7 away from the slot 5 and the electrical connector 14. In this way, a single metal pole piece 8 can be easily removed and replaced.

[0037] Example 2

[0038] refer to Figure 2 , Figure 4 , Figure 5 , Fig. 9 and Fig.10A brush assembly 19 is provided on the inner wall of the stator body 2 at a position corresponding to the metal segment body. The brush assembly 19 is used to introduce external current into the rotor body 1. The brush assembly 19 includes a fixed cylinder 20, a brush body 21, a limiting groove 22 and a placement assembly 23. The fixed cylinder 20 is fixed on the inner wall of the stator body 2. It should be noted that the end of the fixed cylinder 20 close to the stator body 2 is not conductive, and this part is designed for insulation. The surface current is conducted to the stator body 2. There are four groups of limiting grooves 22 here. The four groups of limiting grooves 22 are opened on the four sides of the fixed cylinder 20 to connect the side of the fixed cylinder 20 with the inner wall. The shape of the fixed cylinder 20 is square, and there are limiting grooves 22 on the four sides of the fixed cylinder 20. This arrangement is balanced, and the brush body 21 moves in Inside the fixed cylinder 20, one end of the placement component 23 moves inside the limiting groove 22 and is stuck on the surface of the brush body 21, and the other end of the brush body 21 is attached to the surface of the metal segment body. A positioning groove 24 is provided on the side of the stator body 2 corresponding to the position of the fixed cylinder 20, and a connecting groove 25 matching the placement component 23 is provided inside the positioning groove 24. The connecting groove 25 connects the inner wall of the stator body 2 with the positioning groove 24. The end of the placement component 23 away from the brush body 21 passes through the connecting groove 25 and extends to the inside of the positioning groove 24. A fastener 26 is fixed on the side of the stator body 2 corresponding to the position of the positioning groove 24. The fastener 26 positions the placement component 23 on the stator body 2. The fastener 26 stably positions the placement component 23 on the stator body 2, so that the placement component 23 is not easy to move. The placement component 23 includes a stabilizing block 27, a positioning cylinder 28, four clamping plates 29 and a spring member 30. The stabilizing block 27 moves inside the positioning groove 24. The positioning cylinder 28 is fixed on one side of the positioning block 7. The other end of the positioning cylinder 28 passes through the connecting groove 25 and extends to the inside of the fixing cylinder 20. The four clamping plates 29 are respectively fixed on the four side surfaces of the positioning cylinder 28. The four clamping plates 29 are respectively movable inside the four limiting grooves 22, and the opposite surfaces of the four clamping plates 29 are clamped on the side surfaces of the brush body 21. The four clamping plates 29 clamp the brush body 21 from the four side surfaces of the brush body 21, so that the brush body 21 is stably clamped and is not easy to separate from the clamping plates 29. The spring member 30 moves inside the positioning cylinder 28, and the spring member 30 is located at the positioning One end of the inner part of the tube 28 is fitted on the surface of the stabilizing block 27, and the other end of the spring member 30 is fitted on the end face of the brush body 21. One side of the stabilizing block 27 extends to the outside of the positioning groove 24, and a protrusion 31 is fixed on the surface of the stabilizing block 27 outside the positioning groove 24. The fastener 26 includes an annular seat 32 and an externally threaded knob 33. The annular seat 32 is fixed to the side of the stator body 2 at a position corresponding to the positioning groove 24. The externally threaded knob 33 is threadedly connected to the annular seat 32, and one end of the externally threaded knob 33 is against the surface of the stabilizing block 27. It should be noted that the stabilizing block 27 is an insulating block, and the stabilizing block 27 is stabilized by the externally threaded knob 33 against the stabilizing block 27, and then the clamping plate 29 and the spring member 30 are stabilized by the stabilizing block 27. When in use,One end of the spring member 30 will rest against one end of the brush body 21, so that the other end of the brush body 21 will stably rest against the surface of the metal pole piece 8, so that the brush body 21 will stably fit on the metal pole piece 8. When the brush body 21 is almost consumed, it needs to be replaced. First, we need to turn the external threaded knob 33 to separate it from the annular seat 32, then pinch the stabilizing block 27 with our fingers and move the stabilizing block 27 to a position away from the positioning groove 24. The movement of the stabilizing block 27 will drive the positioning cylinder 28, the four clamping plates 29, the spring member 30 and the clamped brush body 21 to be removed from the fixing cylinder 20 and the stator body 2, then remove the worn brush body 21 from the four clamping plates 29, and then place the new brush body 21 between the four clamping plates 29 and clamp it stably through the four clamping plates 29. One end of the spring member 30 is also lower than one end of the brush body 21, and then the replaced brush body 21 is replaced again according to the above operation. The brush body 21 and four clamps 29 are placed in the fixing tube 20, so that the four clamps 29 are located in the limiting groove 22, and then the stabilizing block 27 is pushed, and the stabilizing block 27 will push the clamps 29 and the brush body 21 to move together, so that the brush body 21 will fit on the surface of the metal pole piece 8, and the stabilizing block 27 will be pushed again to squeeze the spring member 30 through the stabilizing block 27 and the positioning tube 28, so that the spring member 30 shrinks under the thrust and applies elastic force to the brush body 21, so that the brush body 21 is stably fitted on the surface of the metal pole piece 8, and finally the external threaded knob 33 is turned to dock with the annular seat 32 to position the stabilizing block 27, thereby stabilizing the entire placement assembly 23. The above assembly operation does not require disassembling the stator body 2 to replace the brush body 21. The fastener 26 can be directly removed to remove the placement assembly 23 to replace the brush body 21. The operation is simple, which greatly improves the convenience of replacing the brush body 21.

[0039] refer to Figure 5 and Figure 8 The side of the fixed cylinder 20 is provided with an electrical connection component 34, which includes a fixed block 35, an elastic sheet 36 and an electric post 37. The fixed block 35 is fixed to the side of the fixed cylinder 20 corresponding to the position of the limiting groove 22, the elastic sheet 36 is fixed to one side of the fixed block 35 located at the limiting groove 22, the elastic sheet 36 is movably attached to one of the four clamping plates 29, and the electric post 37 is fixed to the other end of the fixed block 35, and the other end of the electric post 37 passes through the stator body 2 and extends to On the outside of the stator body 2, the elastic sheet 36 is against the surface of the clamping plate 29. The clamping plate 29 is conductive. The elastic sheet 36 and the clamping plate 29 are both metallic spring sheets with high elasticity. They can be stably connected to the clamping plate 29 through elasticity. The electric post 37 is used to introduce external electricity into the fixed block 35 and the elastic sheet 36, so that the electricity passes through the fixed block 35 and the elastic sheet 36 to the clamping plate 29, and then reaches the brush body 21 through the clamping plate 29, thereby achieving the purpose of stable conduction and not easily causing a circuit breaker.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A miniature DC brush motor commutator, characterized in that: The invention comprises a rotor body (1) and a stator body (2), wherein the rotor body (1) is rotatably connected to the inside of the stator body (2), a metal pole piece substrate (3) is arranged at one end of the rotor body (1), a placement groove (4) is arranged on the side of the metal pole piece substrate (3), a clamping groove (5) is opened on the side of the placement groove (4) close to the rotor body (1), a line connector (6) and a positioning block (7) are movably arranged inside the clamping groove (5), the side of the line connector (6) is movably connected to the side of the positioning block (7), a metal pole piece (8) is movably arranged inside the placement groove (4), the positioning block (7) is fixed to one side of the metal pole piece (8), a clamping block (9) is arranged at the other end of the metal pole piece (8), the clamping block (9) is movably arranged inside the placement groove (4), a wire (10) is arranged at one end of the line connector (6), and the wire (10) is fixedly connected to the rotor body (1); A connecting disk (11) is provided at one end of the metal pole piece substrate (3) away from the rotor body (1); a side of the connecting disk (11) away from the metal pole piece substrate (3) is rotatably connected to the inner wall of the stator body (2); a positioning nut (12) is movably sleeved on the side of the connecting disk (11); and the positioning nut (12) is clamped on the surface of the clamping block (9).

2. A micro DC brush motor commutator according to claim 1, characterized in that: The line connector (6) comprises an electrical connection strip (13) and an electrical connection head (14); the electrical connection strip (13) is clamped inside the clamping slot (5); the electrical connection head (14) is fixed to the top of the electrical connection strip (13); the top of the electrical connection head (14) passes through the clamping slot (5) and extends to the outside of the clamping slot (5); and the wire (10) is fixed to a side of the electrical connection head (14) away from the metal segment body.

3. A micro DC brush motor commutator according to claim 2, characterized in that: A pressing block (15) is provided on one side of the metal segment body close to the positioning block (7), and the pressing block (15) is movably fitted on the top position of the electrical connector (14).

4. A micro DC brush motor commutator according to claim 3, characterized in that: The positioning nut (12) is provided with a through slot (16), the connection position between the connecting plate (11) and the stator body (2) is movable inside the through slot (16), and the outer side surface of the positioning nut (12) is provided with a hand-operated block (17).

5. A micro DC brush motor commutator according to claim 4, characterized in that: A protective ring (18) is movably sleeved on the connecting plate (11), and two sides of the protective ring (18) are respectively fitted on the opposite surfaces of the metal segment body and the positioning nut (12).

6. A micro DC brush motor commutator according to claim 5, characterized in that: A brush assembly (19) is arranged on the inner wall of the stator body (2) at a position corresponding to the metal segment body. The brush assembly (19) comprises a fixed cylinder (20), a brush body (21), a limiting groove (22) and a placement assembly (23). The fixed cylinder (20) is fixed on the inner wall of the stator body (2). The limiting grooves (22) are four groups. The four groups of limiting grooves (22) are arranged on four side surfaces of the fixed cylinder (20) so that the side surfaces of the fixed cylinder (20) are connected to the inner wall. The brush body (21) moves inside the fixed cylinder (20). One end of the placement assembly (23) moves inside the limiting groove (22) and is clamped on the surface of the brush body (21). The brush body (21) moves inside the limiting groove (22) and is clamped on the surface of the brush body (21). The other end of the brush body (21) is attached to the surface of the metal segment body, a positioning groove (24) is provided on the side of the stator body (2) corresponding to the position of the fixing cylinder (20), a connecting groove (25) matching the placement component (23) is provided inside the positioning groove (24), the connecting groove (25) connects the inner wall of the stator body (2) with the positioning groove (24), one end of the placement component (23) away from the brush body (21) passes through the connecting groove (25) and extends to the inside of the positioning groove (24), a fastener (26) is fixed on the side of the stator body (2) corresponding to the position of the positioning groove (24), and the fastener (26) positions the placement component (23) on the stator body (2).

7. A micro DC brush motor commutator according to claim 6, characterized in that: The placement assembly (23) comprises a stabilizing block (27), a positioning cylinder (28), four clamping plates (29) and a spring member (30); the stabilizing block (27) moves inside the positioning groove (24); the positioning cylinder (28) is fixed on one side of the positioning block (7); the other end of the positioning cylinder (28) passes through the connecting groove (25) and extends to the inside of the fixing cylinder (20); the four clamping plates (29) are respectively fixed on the four side surfaces of the positioning cylinder (28); the four clamping plates (29) move inside the four limiting grooves (22) respectively, and the opposite surfaces of the four clamping plates (29) are clamped on the side surfaces of the brush body (21); the spring member (30) moves inside the positioning cylinder (28); one end of the spring member (30) located inside the positioning cylinder (28) is in contact with the surface of the stabilizing block (27), and the other end of the spring member (30) is in contact with the end surface of the brush body (21).

8. A micro DC brush motor commutator according to claim 7, characterized in that: One side of the stabilizing block (27) extends to the outside of the positioning groove (24), and a protrusion (31) is fixed on the surface of the stabilizing block (27) located outside the positioning groove (24). The fastener (26) comprises an annular seat (32) and an externally threaded knob (33). The annular seat (32) is fixed to a position of the side surface of the stator body (2) corresponding to the positioning groove (24), and the externally threaded knob (33) is threadedly connected to the annular seat (32), and one end of the externally threaded knob (33) abuts against the surface of the stabilizing block (27).

9. A micro DC brush motor commutator according to claim 8, characterized in that: An electrical connection assembly (34) is arranged on the side of the fixed cylinder (20), and the electrical connection assembly (34) comprises a fixed block (35), an elastic sheet (36) and an electric post (37). The fixed block (35) is fixed to a position on the side of the fixed cylinder (20) corresponding to the limiting groove (22), the elastic sheet (36) is fixed to one side of the fixed block (35) located at the limiting groove (22), the elastic sheet (36) is movably fitted on one of the four clamping plates (29), the electric post (37) is fixed to the other end of the fixed block (35), and the other end of the electric post (37) passes through the stator body (2) and extends to the outside of the stator body (2).

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