CN111799926B - Miniature motor and rotor winding method thereof - Google Patents
Miniature motor and rotor winding method thereof Download PDFInfo
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- CN111799926B CN111799926B CN202010642860.0A CN202010642860A CN111799926B CN 111799926 B CN111799926 B CN 111799926B CN 202010642860 A CN202010642860 A CN 202010642860A CN 111799926 B CN111799926 B CN 111799926B
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- rotor
- lead
- pole piece
- pulled
- wound
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/14—Means for supporting or protecting brushes or brush holders
- H02K5/143—Means for supporting or protecting brushes or brush holders for cooperation with commutators
- H02K5/145—Fixedly supported brushes or brush holders, e.g. leaf or leaf-mounted brushes
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
- H02K13/04—Connections between commutator segments and windings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/04—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines
- H02K15/0435—Wound windings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/08—Forming windings by laying conductors into or around core parts
- H02K15/09—Forming windings by laying conductors into or around core parts by laying conductors into slotted rotors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
Abstract
The invention relates to the technical field of motors, in particular to a micro motor which comprises a casing, a magnetic ring arranged on the inner wall of the casing in a surrounding manner, a rotor arranged in the casing in a rotating manner and an end cover arranged on the casing, wherein the rotor comprises a rotating shaft, a commutator and a plurality of rotor sheets which are overlapped and sleeved on the rotating shaft, and six winding bodies with the same structure are arranged at equal intervals on the outer edge of each rotor sheet along the circumferential direction of the rotor sheet; the commutator comprises six commutating pole pieces which are arranged around the circumference of the rotating shaft at equal intervals. The invention designs six equally spaced winding bodies distributed in a radial shape on the rotor sheet and matches with six reversing pole pieces of the commutator, so that the rotor can be reversed when rotating 60 degrees, thereby improving the reversing efficiency of the rotor and improving the working stability and the working efficiency of the motor. The invention also provides a rotor winding method, and the working stability of the whole motor can be improved by adopting the winding method under the matching of the six winding bodies and the six reversing pole pieces.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a micro motor and a rotor winding method thereof.
Background
Micro motors are more and more introduced into daily life of people, and products such as a vibrating toothbrush, a wrinkle removing vibrating massager, a mobile phone and the like need to be internally provided with the micro motors. At present, with the development of the trend of diversified purposes, higher requirements are put forward on the micro motor, so that the simplified assembly process enables the end cover structure of the micro motor to be continuously researched, developed and improved.
However, the rotor of the existing micro motor adopts a structure of three winding bodies, and the rotor of the motor needs to rotate 120 degrees to perform one-time reversing, so that the reversing efficiency is low, the working efficiency of the motor is low, and the development requirement of the market cannot be met. Meanwhile, the winding structure of the three winding bodies is complicated, the winding is not easy to operate, and the wire breakage is easy to occur during winding; and the windings of the three windings are not uniformly distributed, so that the performance of the motor is unstable and the power of the motor is low. This drawback is quite evident and an effective solution is needed.
Disclosure of Invention
The invention aims to provide a micro motor with simple and compact structure, stable and reliable operation and high working efficiency aiming at the defects of the prior art, and also provides a motor rotor winding method which has simple winding, is easy to operate, is not easy to break, can ensure uniform winding of a rotor and ensures the performance of the motor.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a micro motor which comprises a casing, a magnetic ring, a rotor and an end cover, wherein the magnetic ring is annularly arranged on the inner wall of the casing, the rotor is rotatably arranged in the casing, the end cover is arranged on the casing, the rotor comprises a rotating shaft, a commutator and a plurality of rotor sheets which are overlapped and sleeved on the rotating shaft, and the commutator is arranged on the rotating shaft and is positioned at one end of each rotor sheet; the magnetic ring is sleeved outside the rotor sheet, one end of the rotating shaft, which is far away from the commutator, extends out of the machine shell, and one end of the rotating shaft, which is close to the commutator, is rotatably connected with the end cover; six winding bodies with the same structure are arranged on the outer edge of the rotor sheet at equal intervals along the circumferential direction of the rotor sheet; the commutator comprises six commutating pole pieces which are arranged around the circumference of the rotating shaft at equal intervals.
The end cover comprises a cover plate and two electric brushes, two fixing grooves for fixing the two electric brushes are formed in the inner side of the cover plate respectively, the two fixing grooves are symmetrically formed in the two sides of the cover plate through the central plane of the cover plate, and a lead inlet and a lead outlet are formed in one end, located between the two fixing grooves, of the cover plate; after the electric brush is embedded into the fixing groove, two ends of the electric brush respectively extend out of the fixing groove, one end of the electric brush is bent and extends towards the center of the cover plate to form a contact end, and the other end of the electric brush extends towards the direction of the lead inlet and outlet to form a terminal; the two electric brushes are respectively positioned at two sides of the commutator and are abutted against the commutating pole pieces, and the two contact ends are combined to form a V shape.
Furthermore, a first fixing block and a second fixing block are respectively arranged at two ends of the inner side of the cover plate in a protruding mode, the first fixing block and the second fixing block are arranged in parallel at intervals, and fixing grooves are formed by the first fixing block and the second fixing block in a surrounding mode; the length direction of the fixing groove is crossed with the center line c-c of the cover plate.
Furthermore, two lead positioning blocks which are arranged at intervals are respectively arranged at one end of the cover plate between the two fixing grooves, and a lead inlet and a lead outlet are formed between the two lead positioning blocks in a surrounding manner; and the lead guide blocks are positioned above the two lead positioning blocks and correspond to the lead inlets and outlets, and the lead guide blocks and the two lead positioning blocks are enclosed to form lead slots.
Furthermore, wire clamping flanges are respectively arranged above the lead inlet and the lead outlet of the two lead positioning blocks in a protruding mode.
Furthermore, an avoidance opening is formed between the lead positioning block and the first fixing block along the circumferential direction of the cover plate.
Furthermore, the diapire of fixed slot is concave to be equipped with the constant head tank, the brush is equipped with the location portion with constant head tank complex.
The commutator also comprises a pole piece fixing frame sleeved on the rotating shaft and pole piece pressing blocks arranged on the pole piece fixing frame, wherein six commutator pole pieces are arranged around the circumference of the pole piece fixing frame at equal intervals, and the pole piece pressing blocks are used for pressing the commutator pole pieces on the pole piece fixing frame; one end of the pole piece fixing frame is connected with the rotor piece.
Further, the center of rotor piece is provided with the mounting hole that is used for supplying the pivot installation, the circumference distribution of the inner wall of mounting hole is equipped with the spacing groove, the pole piece mount is close to the one end of rotor piece be provided with spacing groove complex spacing inserted block.
The invention also provides a motor rotor winding method, which comprises the micro motor and the electromagnetic wire, wherein six winding bodies are sequentially marked as N1, N2, N3, N4, N5 and N6 according to the circumference, six reversing pole pieces are sequentially marked as P1, P2, P3, P4, P5 and P6 according to the circumference, and the winding steps are as follows: the magnet wire is pulled up from P1 and is wound from the top of N1 to N circles; after N1 is wound, the electromagnetic wire is pulled out from the bottom of N1 and pulled to the bottom of N4, and the electromagnetic wire is wound by N4 to N circles; after N4 is wound, the electromagnetic wire is pulled out from the top of N4, pulled to P2 and wound around P2, pulled to P5 and wound around P5 from the lower part of the reversing pole piece after being wound around P2, pulled to N2 after being wound around P5 and wound around N2 from the top of N2 to N circles; after N2 is wound, the electromagnetic wire is pulled out from the bottom of N2 and pulled to the bottom of N5, and the battery wire is wound by N5 to N circles; after N5 is wound, the electromagnetic wire is taken out from the top of N5 and is pulled to P3 to bypass P3, and after the electromagnetic wire bypasses P3, the electromagnetic wire is pulled to P6 from the lower part of the reversing pole piece to bypass P6; the magnet wire is pulled to N3 after passing around P6 and is wound around N3 to N circles from the top of N3; after the electromagnetic wire is wound by N3, the electromagnetic wire is pulled out from the bottom of N3 and pulled to the bottom of N6, and the battery wire is wound by N6 to N circles; and after the electromagnetic wire is wound by the N6, the electromagnetic wire is pulled out from the top of the N6 to the P4 and bypasses the P4, and after the electromagnetic wire bypasses the P4, the electromagnetic wire is pulled to the P1 from the lower part of the reversing pole piece to finish winding.
The invention has the beneficial effects that:
according to the micro motor provided by the invention, six reversing pole pieces of the commutator are connected with six winding bodies on a plurality of superposed rotor pieces in a winding way through electromagnetic wires, and the commutator is electrified to commutate the rotor pieces so as to drive the rotor to continuously rotate in a magnetic ring of a shell. In the embodiment, the rotor sheet is provided with six equally-spaced winding bodies distributed in a radial manner and is matched with six reversing pole pieces of the commutator, so that the rotor can be reversed when rotating for 60 degrees, the reversing efficiency of the rotor is improved, and the working stability and the working efficiency of the motor are improved. The invention also provides a winding method of the motor rotor, which is adopted under the matching of the six winding bodies and the six reversing pole pieces, has simple winding operation, is convenient for winding the rotor, and is not easy to break in the winding process, thereby ensuring that the winding of the rotor is uniform, improving the production yield of the rotor and being beneficial to improving the overall performance of the motor.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a front view of the rotor of the present invention;
FIG. 4 is a top view of the rotor of the present invention;
FIG. 5 is a schematic structural view of a rotor sheet of the present invention;
FIG. 6 is a schematic structural diagram of the commutator of the present invention, wherein FIG. a is a front view of the commutator and FIG. b is a top view of the commutator;
FIG. 7 is an exploded view of the commutator of the present invention;
FIG. 8 is a top view of the pole piece holder of the present invention;
FIG. 9 is a schematic structural view of an end cap of the present invention;
FIG. 10 is a perspective view of the cover plate of the present invention;
FIG. 11 is a schematic structural diagram of a cover plate of the present invention, wherein FIG. a is a top view of the cover plate, and FIG. b is a front view of the cover plate;
fig. 12 is a schematic structural view of a brush of the present invention, in which fig. a is a top view of the brush, and fig. b is a right side view of the brush;
fig. 13 is a schematic view of a winding structure of the rotor of the present invention.
Description of the reference numerals
1. A rotor; 2. an end cap; 3. a magnetic ring; 4. a housing; 11. a rotating shaft; 12. a commutator; 13. a rotor sheet; 14. a voltage dependent resistor; 15. an oil baffle plate; 121. reversing the pole piece; 122. a pole piece fixing frame; 123. pressing the pole piece; 124. an annular convex ring; 125. a pole piece positioning block; 126. limiting an insert block; 1211. a master slice; 1212. a leg; 1241. a leg fixing groove; 1242. mounting grooves; 131. a winding body; 132. a winding section; 133. a limiting section; 134. mounting holes; 135. a limiting groove; 136. riveting the concave cavity; 21. a cover plate; 22. an electric brush; 23. a bearing; 211. fixing grooves; 2111. positioning a groove; 2112. a positioning part; 2113. a through hole; 212. a lead inlet and outlet; 213. a first fixed block; 214. a second fixed block; 215. a lead guide block; 216. a lead positioning block; 2161. a wire clamping flange; 217. a lead slot; 218. avoiding the opening; 223. an elastic contact portion; 224. a wiring portion.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention is further described below with reference to the following examples and the accompanying drawings, which are not intended to limit the present invention. The present invention is described in detail below with reference to the attached drawings.
As shown in fig. 1 to 12, the micro motor provided by the present invention includes a casing 4, a magnetic ring 3 annularly disposed on an inner wall of the casing 4, a rotor 1 rotatably disposed in the casing 4, and an end cover 2 disposed on the casing 4, wherein the rotor 1 includes a rotating shaft 11, a commutator 12, and a plurality of rotor segments 13 overlapped and sleeved on the rotating shaft 11, and the commutator 12 is disposed on the rotating shaft 11 and located at one end of the rotor segments 13; the magnetic ring 3 is sleeved outside the rotor sheet 13, one end of the rotating shaft 11, which is far away from the commutator 12, extends out of the casing 4, and one end of the rotating shaft 11, which is close to the commutator 12, is rotatably connected with the end cover 2; six winding bodies 131 with the same structure are arranged on the outer edge of the rotor sheet 13 at equal intervals along the circumferential direction of the rotor sheet 13; the commutator 12 includes six commutator segments 121 equally spaced around the circumference of the rotating shaft 11.
In practical application, six commutating pole pieces 121 of the commutator 12 are connected with six windings 131 on a plurality of overlapped rotor sheets 13 in a winding way through magnet wires, and the commutator 12 is electrified to commutate the rotor sheets 13 so as to drive the rotor 1 to continuously rotate in the magnetic ring 3 of the casing 4. In the embodiment, the rotor sheet 13 is designed to have six winding bodies 131 which are equally spaced and radially distributed, and the six winding bodies are matched with the six reversing pole pieces 121 of the commutator 12, so that the rotor 1 can be reversed when rotating by 60 degrees, thereby improving the reversing efficiency of the rotor 1 and improving the working stability and the working efficiency of the motor.
In the present technical solution, the end cap 2 includes a cover plate 21 and two brushes 22, two fixing grooves 211 for fixing the two brushes 22 are disposed on an inner side of the cover plate 21, the two fixing grooves 211 are symmetrically disposed on two sides of the cover plate 21 with respect to a central plane of the cover plate 21, and a lead inlet/outlet 212 is disposed at one end of the cover plate 21 between the two fixing grooves 211; after the brush 22 is embedded in the fixing groove 211, two ends of the brush 22 respectively protrude out of the fixing groove 211, one end of the brush 22 is bent and extends towards the center of the cover plate 21 to form a contact end, and the other end of the brush 22 extends towards the direction of the lead inlet and outlet 212 to form a terminal; the two brushes 22 are respectively located on two sides of the commutator 12 and abut against the commutation pole pieces 121, and the two contact ends are combined to form a V shape.
In practical application, the two fixing grooves 211 fix the two brushes 22 on two sides of the inner side of the end cover 2 respectively, and the lead passes through the inner side of the end cover 2 through the lead inlet and outlet 212 and is connected with the terminals of the two brushes 22 respectively; after the lead is connected with the electric brush 22, and the end cover 2 is assembled on the machine shell 4, the end cover 2 can cover the lead in the machine shell 4 so as to prevent the terminal of the lead and the electric brush 22 from being exposed out of the end cover 2, thereby solving the problems that the lead is easy to break and short circuit is easy to occur and improving the working stability of the motor; meanwhile, two contact ends of the two brushes 22 are used for abutting against the commutator 12 of the rotating shaft 11 of the motor and are designed in a V shape, so that the two contact ends are distributed on two sides of the commutator 12 and are in good contact with the commutating pole pieces 121 of the commutator 12, and the two contact ends form an acute included angle, so that the abrasion of the brushes 22 on the commutator 12 can be effectively reduced relative to a parallel structure, and the working reliability and the service life of the motor are improved.
In the present embodiment, the brush 22 includes a V-shaped elastic contact portion 223 and a bent wire connection portion 224, the thickness of the elastic contact portion 223 is smaller than that of the wire connection portion 224, one end of the elastic contact portion 223 protrudes toward the center of the cover plate 21 to form a contact end, the other end of the elastic contact portion 223 is connected to one end of the wire connection portion 224, the connection point of the elastic contact portion 223 and the wire connection portion 224 is embedded in the fixing groove 211, and one end of the wire connection portion 224, which is far away from the elastic contact portion 223, extends toward the direction of the lead inlet/outlet 212 to form a wire connection end. In practical applications, the thickness of the wire connection portion 224 is greater than that of the elastic contact portion 223, so as to enhance the strength and weight of the brush 22 as a whole, and on one hand, when the brush 22 is assembled, the brush 22 can be conveniently embedded into the fixing groove 211, so that the fixing groove 211 clamps the brush 22; on the other hand, it is possible to enhance the stability after the brush 22 is fitted into the fixing groove 211 and to improve the stability of the connection of the lead wire to the terminal. The thickness of the elastic contact portion 223 is small, so that the elastic contact portion 223 has certain elasticity, and the abrasion of the commutator 12 caused by the excessive pressure of the elastic contact portion 223 on the commutator 12 is avoided. The brush 22 has simple and compact structural design, low manufacturing cost and stable and reliable operation.
In the present technical solution, a first fixing block 213 and a second fixing block 214 are respectively protruded from two ends of an inner side of the cover plate 21, the first fixing block 213 and the second fixing block 214 are parallel and spaced apart, and a fixing groove 211 is defined by the first fixing block 213 and the second fixing block 214; the fixing grooves 211 are formed to cross the center line c-c of the cover plate 21 in the longitudinal direction. In this embodiment, the fixing slots 211 are vertically distributed. The structure is designed to facilitate the installation of the brush 22 and to enable the two V-shaped elastic contact portions 223 to accurately protrude to the center of the cap plate 21.
In the present technical solution, two lead positioning blocks 216 arranged at intervals are respectively arranged at one end of the cover plate 21 located between the two fixing grooves 211, and a lead access 212 is enclosed between the two lead positioning blocks 216; and the lead guide block 215 is positioned above the two lead positioning blocks 216 and is arranged corresponding to the lead inlet and outlet 212, and the lead guide block 215 and the two lead positioning blocks 216 enclose a lead slot 217. During lead assembly, the lead passes through the lead inlet/outlet 212 and then abuts against the lead guide block 215, the lead guide block 215 stops the lead and divides the lead into two sections, and the two sections of lead are respectively attached to the two lead positioning blocks 216 and extend to the terminal of the brush 22 along the lead positioning blocks 216. The design of this structure is simple compact, not only can carry on spacingly to the lead wire, can also fix the inlet wire end and the wiring end of lead wire effectively to prevent that the easy activity of appearing of the wiring end of lead wire and brush 22 from leading to the unstable problem of motor work to appear.
Preferably, the two lead positioning blocks 216 are located above the lead inlet/outlet 212 and are respectively provided with a wire locking flange 2161 in a protruding manner. The two wire locking flanges 2161 may be connected to each other in a closed manner or in an open manner. The wire clamping flange 2161 is designed to clamp the wire inlet end of the lead wire, so that the stability of the lead wire is further improved; even if the lead wire outside the end cap 2 moves, the connection position of the lead wire and the brush 22 is not moved, so that the connection stability between the lead wire and the brush 22 is improved.
Preferably, the lead positioning block 216 has an escape opening 218 formed between the first fixing block 213 and the circumferential direction of the cover plate 21. The escape opening 218 is provided corresponding to the connection between the lead and the brush 22. The avoiding opening 218 is designed to facilitate welding of the connection between the lead and the brush 22 by a human or an external manipulator, and the avoiding opening 218 provides an avoiding space for soldering tin at the connection between the lead and the brush 22.
In this embodiment, a positioning groove 2111 is concavely provided on the bottom wall of the fixing groove 211, and the brush 22 is provided with a positioning portion 2112 engaged with the positioning groove 2111. Specifically, the positioning slot 2111 and the positioning portion 2112 are both L-shaped. The design of this structure can carry out accurate location and spacing to brush 22, prevents that brush 22 from the skew of position appearing at the during operation to improve the reliability of motor work.
In this technical solution, a through hole 2113 is provided at the bottom wall of the fixing groove 211, and the through hole 2113 penetrates through the cover plate 21. The design of the through-hole 2113 facilitates heat dissipation from the brush 22.
In this technical scheme, the micro motor end cover 2 further includes a bearing 23, a containing groove for containing the bearing 23 is concavely provided in the center of the inner side of the cover plate 21, and the bearing 23 and the cover plate 21 are coaxially arranged. When the motor is assembled, one end of the rotating shaft 11 of the motor passes through the bearing 23, and the bearing 23 is used for positioning the rotating shaft 11 and ensuring the rotating stability of the rotating shaft 11.
In the present technical solution, the commutator 12 further includes a pole piece fixing frame 122 sleeved on the rotating shaft 11 and a pole piece pressing block 123 arranged on the pole piece fixing frame 122, the six commutation pole pieces 121 are arranged around the pole piece fixing frame 122 in the circumferential direction at equal intervals, and the pole piece pressing block 123 is used for pressing the commutation pole pieces 121 on the pole piece fixing frame 122; one end of the pole piece fixing frame 122 is connected with the rotor piece 13. The design of this structure to make six switching-over pole pieces 121 can encircle rotation shaft 11 firmly and establish, thereby improve the stability of motor work.
In the present technical solution, the reversing pole piece 121 includes a main piece 1211 and a supporting leg 1212, and the supporting leg 1212 and the main piece 1211 are arranged in a crossing manner; the legs 1212 are located between two adjacent winding bodies 131. Specifically, the center line of the leg 1212 coincides with the center of the space between two adjacent windings 131, that is, the leg 1212 of one commutation pole piece 121 is located at the center position between two adjacent windings 131. Due to the design of the structure, on one hand, the electromagnetic wires can be uniformly wound on the six support legs 1212 and the six winding bodies 131, so that the working stability of the rotor is improved, and the working performance of the motor is ensured; on the other hand, the process difficulty of winding can be reduced, and the winding efficiency is improved.
In the technical solution, an annular convex ring 124 is arranged on the pole piece fixing frame 122, an installation groove 1242 for installing the commutation pole piece 121 is formed between the annular convex ring 124 and the pole piece fixing frame 122, and the main piece 1211 is inserted into the installation groove 1242 and attached to the outer peripheral surface of the pole piece fixing frame 122; six supporting leg fixing grooves 1241 for mounting supporting legs 1212 are arranged at equal intervals in the circumferential direction of the annular convex ring 124, and the supporting legs 1212 pass through the supporting leg fixing grooves 1241 and protrude out of the pole piece fixing frame 122; the pole piece pressing block 123 is sleeved outside the main piece 1211 above the supporting leg 1212 and abuts against the surface of the annular convex ring 124. In practical applications, the inner wall of the pole piece pressing block 123 presses the main piece 1211 of the commutation pole piece 121 against the pole piece fixing frame 122, and the bottom surface of the pole piece pressing block 123 abuts against the top surface of the annular convex ring 124, so as to seal the leg fixing groove 1241 of the annular convex ring 124. Due to the design of the structure, the reversing pole piece 121 can be stably and accurately installed on the pole piece fixing frame 122.
In the technical proposal, the method has the advantages that,the mounting groove 1242 is provided with six mounting grooves at equal intervals around the circumference of the pole piece fixing frame 122 Pole piece positioning block 125，An installation space for installing the main sheet 1211 is formed between the two adjacent pole piece positioning blocks 125. Design of pole piece positioning block 125, one side is toMain sheet 1211Carry out spacing, on the other hand can ensure sixMaster 1211Are equally spaced apart.
In this technical scheme, the circumferential distribution of the inner wall of mounting hole 134 is equipped with spacing groove 135, the pole piece mount 122 is provided with the spacing inserted block 126 with spacing groove 135 complex near the one end of rotor piece 13. During assembly, after the pole piece fixing frame 122 is sleeved on the rotating shaft 11, the position of the pole piece fixing frame 122 is positioned by inserting the limiting insertion block 126 at the bottom into the limiting groove 135, so as to ensure that the commutation pole piece 121 on the pole piece fixing frame 122 is positioned at the correct position.
In this technical solution, the commutator 12 further includes a varistor 14 sleeved outside the pole piece pressing block 123 and an oil baffle 15 disposed above the commutation pole piece 121. The oil baffle 15 is designed to stop the oil from flowing into the reversing pole piece 121 along the rotating shaft 11. The voltage dependent resistor 14 is used for eliminating the commutation spark between the commutation pole piece 121 and the carbon brush in the working process of the commutator 12, thereby effectively eliminating the potential safety hazard and reducing the friction loss, thereby prolonging the service life and improving the working quality of the invention.
In this technical scheme, the center of rotor piece 13 is provided with the mounting hole 134 that is used for supplying pivot 11 to install, the circumference distribution of the inner wall of mounting hole 134 is equipped with spacing groove 135, the one end that pole piece mount 122 is close to rotor piece 13 is provided with the spacing inserted block 126 with spacing groove 135 complex. During assembly, after the pole piece fixing frame 122 is sleeved on the rotating shaft 11, the position of the pole piece fixing frame 122 is positioned by inserting the limiting insertion block 126 at the bottom of the pole piece fixing frame into the limiting groove 135, so as to ensure that the commutating pole piece 121 on the pole piece fixing frame 122 is positioned at the correct position.
In this embodiment, the winding body 131 is provided with a riveting cavity 136 for overlapping and fixing two adjacent rotor sheets 13. Specifically, in the present embodiment, the caulking recesses 136 are provided on the spaced winding bodies 131. When two adjacent rotor sheets 13 are overlapped, the bottom of the riveting concave cavity 136 of the previous rotor sheet 13 is embedded into the riveting concave cavity 136 of the next rotor sheet 13, so that the two rotor sheets 13 are positioned and fixed, the rotor sheets 13 can be aligned and overlapped neatly, and the working stability of the rotor 1 is improved.
In this embodiment, the winding body 131 includes a winding segment 132 and a limiting segment 133 connected to the winding segment 132, and the winding segment 132 and the limiting segment 133 form a T-shaped structure. The electromagnetic wire is wound on the winding section 132 of the winding body 131, and the limiting section 133 limits the electromagnetic wire wound around the winding body 131 in the winding section 132, so as to prevent the electromagnetic wire from separating from the winding section 132.
The invention also provides a motor rotor winding method, which comprises the micro motor and the electromagnetic wire, wherein the six winding bodies 131 are sequentially marked as N1, N2, N3, N4, N5 and N6 according to the circumference, the six reversing pole pieces 121 are sequentially marked as P1, P2, P3, P4, P5 and P6 according to the circumference, and the winding steps are as follows: the magnet wire is pulled up from P1 and wound from the top of N1 to N circles (N is more than or equal to 1); after N1 is wound, the electromagnetic wire is pulled out from the bottom of N1 and pulled to the bottom of N4, and the electromagnetic wire is wound by N4 to N circles (N is more than or equal to 1); after N4 is wound, the electromagnetic wire is pulled out from the top of N4 and is pulled to P2 and bypasses P2, after bypassing P2, the electromagnetic wire is pulled to P5 and bypasses P5 from the lower part of the reversing pole piece 121, after bypassing P5, the electromagnetic wire is pulled to N2 and bypasses N2 to N circles (N is more than or equal to 1) from the top of N2; after N2 is wound, the electromagnetic wire is pulled out from the bottom of N2 and pulled to the bottom of N5, and the battery wire is wound by N5 to N circles (N is more than or equal to 1); after N5 is wound, the electromagnetic wire is taken out from the top of N5, pulled to P3 and wound around P3, and after being wound around P3, the electromagnetic wire is pulled to P6 and wound around P6 from the lower part of the reversing pole piece 121; the electromagnetic wire is drawn to N3 after passing around P6 and is wound around N3 to N circles (N is more than or equal to 1) from the top of N3; after the electromagnetic wire is wound by N3, the electromagnetic wire is pulled out from the bottom of N3 and pulled to the bottom of N6, and the battery wire is wound by N6 to N circles (N is more than or equal to 1); after N6 is wound, the electromagnetic wire is pulled out from the top of N6 to P4 and passes through P4, and after passing through P4, the electromagnetic wire is pulled to P1 from the lower part of the reversing pole piece 121 to finish winding. The winding method is simple to operate, the rotor 1 of the embodiment can be wound conveniently, and the winding process is not prone to breakage, so that the winding of the rotor 1 is uniform, the production yield of the rotor 1 is improved, and the integral performance of the motor can be improved.
Although the present invention has been described with reference to the above preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A motor rotor winding method is characterized in that: the electromagnetic wire type motor comprises a rotor and an electromagnetic wire, wherein the rotor comprises a rotating shaft, a commutator and a plurality of rotor sheets which are overlapped and sleeved on the rotating shaft, and the commutator is arranged on the rotating shaft and positioned at one end of each rotor sheet; the magnetic ring is sleeved outside the rotor sheet, one end of the rotating shaft, which is far away from the commutator, extends out of the machine shell, and one end of the rotating shaft, which is close to the commutator, is rotatably connected with the end cover; six winding bodies with the same structure are arranged on the outer edge of the rotor sheet at equal intervals along the circumferential direction of the rotor sheet; the commutator comprises six commutating pole pieces which are equidistantly arranged around the circumferential direction of the rotating shaft, and also comprises a pole piece fixing frame sleeved on the rotating shaft and a pole piece pressing block arranged on the pole piece fixing frame, wherein the six commutating pole pieces are equidistantly arranged around the circumferential direction of the pole piece fixing frame, and the pole piece pressing block is used for pressing the commutating pole pieces on the pole piece fixing frame; one end of the pole piece fixing frame is connected with the rotor piece, the center of the rotor piece is provided with a mounting hole for mounting the rotating shaft, limiting grooves are circumferentially distributed on the inner wall of the mounting hole, and one end of the pole piece fixing frame, which is close to the rotor piece, is provided with a limiting insert block matched with the limiting grooves;
six the winding body marks N1, N2, N3, N4, N5 and N6 according to the circumference in proper order, six the switching-over pole piece marks P1, P2, P3, P4, P5 and P6 according to the circumference in proper order, and its winding step is as follows: the magnet wire is pulled up from P1 and winds around N1 to N circles from the top of N1; after N1 is wound, the electromagnetic wire is pulled out from the bottom of N1 and pulled to the bottom of N4, and the electromagnetic wire is wound by N4 to N circles; after N4 is wound, the electromagnetic wire is pulled out from the top of N4, pulled to P2 and wound around P2, pulled to P5 and wound around P5 from the lower part of the reversing pole piece after being wound around P2, pulled to N2 after being wound around P5 and wound around N2 from the top of N2 to N circles; after N2 is wound, the electromagnetic wire is pulled out from the bottom of N2 and pulled to the bottom of N5, and the battery wire is wound by N5 to N circles; after N5 is wound, the electromagnetic wire is taken out from the top of N5 and is pulled to P3 to bypass P3, and after the electromagnetic wire bypasses P3, the electromagnetic wire is pulled to P6 from the lower part of the reversing pole piece to bypass P6; the magnet wire is pulled to N3 after passing around P6 and is wound around N3 to N circles from the top of N3; after the electromagnetic wire is wound by N3, the electromagnetic wire is pulled out from the bottom of N3 and pulled to the bottom of N6, and the battery wire is wound by N6 to N circles; and after the electromagnetic wire is wound by the N6, the electromagnetic wire is pulled out from the top of the N6 to the P4 and bypasses the P4, and after the electromagnetic wire bypasses the P4, the electromagnetic wire is pulled to the P1 from the lower part of the reversing pole piece to finish winding.
2. A miniature motor incorporating a rotor wound by the method of claim 1, wherein: the end cover comprises a cover plate and two electric brushes, two fixing grooves for fixing the two electric brushes are arranged on the inner side of the cover plate respectively, the two fixing grooves are symmetrically arranged on two sides of the cover plate by using the central plane of the cover plate, and a lead inlet and a lead outlet are arranged at one end of the cover plate between the two fixing grooves; after the electric brush is embedded into the fixing groove, two ends of the electric brush respectively protrude out of the fixing groove, one end of the electric brush is bent and extends towards the center of the cover plate to form a contact end, and the other end of the electric brush extends towards the direction of the inlet and the outlet of the lead to form a wiring terminal; the two electric brushes are respectively positioned at two sides of the commutator and are abutted against the commutating pole pieces, and the two contact ends are combined to form a V shape.
3. A micro-motor according to claim 2, wherein: a first fixing block and a second fixing block are respectively arranged at two ends of the inner side of the cover plate in a protruding mode, the first fixing block and the second fixing block are arranged in parallel at intervals, and fixing grooves are formed by the first fixing block and the second fixing block in an enclosing mode; the length direction of the fixing groove is crossed with the center line c-c of the cover plate.
4. A micro-motor according to claim 2, wherein: one end of the cover plate, which is positioned between the two fixing grooves, is provided with two lead positioning blocks which are arranged at intervals, and a lead inlet and a lead outlet are formed between the two lead positioning blocks in a surrounding manner; and the lead guide blocks are positioned above the two lead positioning blocks and correspond to the lead inlets and outlets, and the lead guide blocks and the two lead positioning blocks are enclosed to form lead slots.
5. A miniature motor according to claim 4, wherein: wire clamping flanges are respectively arranged above the lead inlet and the lead outlet of the two lead positioning blocks in a protruding mode.
6. A miniature motor according to claim 4, wherein: an avoiding opening is formed between the lead positioning block and the first fixing block along the circumferential direction of the cover plate.
7. A micro-motor according to claim 2, wherein: the diapire of fixed slot is concave to be equipped with the constant head tank, the brush is equipped with the location portion with constant head tank complex.
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| CN202010642860.0A CN111799926B (en) | 2020-07-06 | 2020-07-06 | Miniature motor and rotor winding method thereof |
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| CN202010642860.0A CN111799926B (en) | 2020-07-06 | 2020-07-06 | Miniature motor and rotor winding method thereof |
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| CN111799926A (en) | 2020-10-20 |
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