WO2023123527A1 - Stator de moteur sans balais, procédé de fixation de stator de moteur sans balais et moteur sans balais - Google Patents

Stator de moteur sans balais, procédé de fixation de stator de moteur sans balais et moteur sans balais Download PDF

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Publication number
WO2023123527A1
WO2023123527A1 PCT/CN2022/000115 CN2022000115W WO2023123527A1 WO 2023123527 A1 WO2023123527 A1 WO 2023123527A1 CN 2022000115 W CN2022000115 W CN 2022000115W WO 2023123527 A1 WO2023123527 A1 WO 2023123527A1
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WO
WIPO (PCT)
Prior art keywords
stator
reducer housing
stator assembly
brushless motor
reducer
Prior art date
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PCT/CN2022/000115
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English (en)
Chinese (zh)
Inventor
李有刚
杨永辉
何国栋
Original Assignee
贵阳万江航空机电有限公司
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Application filed by 贵阳万江航空机电有限公司 filed Critical 贵阳万江航空机电有限公司
Publication of WO2023123527A1 publication Critical patent/WO2023123527A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation

Definitions

  • the invention relates to a motor power system, in particular to a brushless motor stator, a fixing method for the brushless motor stator and a brushless motor.
  • the wiper motors on the market are all brushed motors, whether they are mechanical motors or electronic motors.
  • the brushes and commutators of brushed motors are indispensable as functional components, but friction noise will be generated during the work process, causing the motor to The overall noise is high.
  • commutation sparks will be generated due to commutation discharge, which will cause brush ablation and rapid wear, making it difficult to improve the service life.
  • the generation of commutation sparks will also affect the EMC performance of the motor.
  • both car owners and car companies have put forward higher requirements for the comfort of the car.
  • the wiper system cannot be cancelled.
  • the distance to the central control components is very close, the noise of the motor will directly affect the driver's ear comfort, and the EMC performance will also directly affect the instruments and equipment in the cab.
  • the rotor of the existing wiper motor is fixed by the reducer housing, and the mechanical fixation of the axial limit is used.
  • the stator provides the magnetic field, which is realized by bonding the permanent magnet on the inner surface of the motor housing, and finally the motor
  • the casing and the reducer casing are assembled together so that the rotor is in the center of the magnetic field. After the power supply is supplied to the motor, the rotor wire is a charged conductor in the magnetic field, and it starts to rotate under the action of the ampere force.
  • the car wiper motor includes a permanent magnet brushless DC motor and a reducer, and the armature shaft of the permanent magnet brushless DC motor
  • the left end of the armature shaft is processed into a worm, and the middle of the armature shaft is supported by a rolling bearing.
  • the rolling bearing is limited by an open collar, a pair of disc-shaped elastic washers, and an open washer.
  • the left end of the shaft consists of the sliding bearing at the worm end, the support hole at the worm end, the adhesive material, and the sealing ring to form an adaptive support structure at the worm end.
  • the assembly When assembling, first complete the rolling bearing in the middle of the armature shaft and the powder metallurgy spherical sliding bearing at the right end of the armature shaft The assembly makes the armature shaft become the second supporting static fixed shaft, and then fills the adhesive material into the supporting hole of the worm end, so that the outer ring of the sliding bearing at the worm end and the reducer box are bonded and fixed, so that the armature shaft forms three
  • the supporting statically determinate structure can avoid the abnormal force phenomenon caused by the super-statically indeterminate three-support of the armature shaft.
  • Patent CN201720180170.1 discloses a three-phase DC brushless motor device, including a reducer, a motor shaft, a stator and a rotor.
  • the stator includes stator coils and stator cores
  • the rotor includes magnetic steel and rotor iron cores.
  • the motor shaft contains a magnetic ring.
  • the invention is easy to assemble, and the production cost is low, and the motor adopts the stator chute, which weakens the harmonic wave during the operation of the motor, can effectively reduce the noise, reduce the temperature rise of the motor and the driver, ensure the stable and reliable operation of the driver, and improve the performance of the motor device. Efficiency, prolonging the service life of the motor unit.
  • This patent is a purely theoretical design patent, that is, a patent without actual production products.
  • Patent CN201510932639.8 discloses a front wiper motor, including a motor housing, an armature, a brush holder ring, a reducer housing, a worm gear part, and a gland part, and the brush holder ring is electrically connected to the integrated block.
  • the integrated block is connected with the external plug; the brush holder ring is provided with a through groove, and the reducer housing is provided with two U-shaped grooves.
  • the through groove and the U-shaped groove are aligned, and the three grooves
  • the groove width is 1-3mm larger than the diameter of the worm shaft of the armature; the invention redesigns the convenience of motor assembly, motor sealing, gland plug pieces, etc., which reduces the manufacturing cost of the motor and saves Assembly time.
  • the patented design mechanism can indeed achieve rapid assembly, but in the actual production process, there will be inconsistent matching dimensions due to tolerances in the groove width dimensions of several parts.
  • the waterproof level of the integrated circuit and the gland parts after assembly is reduced. The assembly of the original design The process cannot meet the protection requirements of IP67.
  • the brushless wiper motor chooses the inner rotor (used to provide the permanent magnet magnetic field), and the stator is a combination of punching and winding.
  • the stator is a combination of punching and winding.
  • most of the conventional processes use longer screws to pass through the holes reserved on the punching.
  • the holes are screwed together with the reducer housing.
  • This kind of structure is bulky.
  • fixed holes are reserved on the punching sheet.
  • the structure of the punching sheet is complicated, and the maximum outer diameter becomes larger.
  • the fixing bolts fix the stator through the holes. This design structure and fixing method will cause the stator, rotor and The reducer housing will have the problem that the coaxiality cannot meet the requirements.
  • the object of the present invention is to provide a new type of brushless motor, especially the innovation and improvement of the stator part, so as to solve the problems of large volume, uncompact structure, heavy weight and fixed stator of the brushless front wiper motor.
  • Coaxial problem The structure of the reducer housing of the front wiper motor is innovatively designed; a long cylindrical reducer housing is designed, the motor stator is all embedded in the reducer housing for assembly, and an axial shaft is designed in the long cylinder of the reducer housing.
  • the limit table is used to fix the axial limit when the stator is press-fitted, so as to prevent the stator from being not vertical during press-fitting, or the depth of the press-fitting is too deep to cause the winding to be damaged and short-circuited.
  • the limit table and other positions of the reducer housing are clamped and processed at one time, so the perpendicularity between the surface of the limit table and the axial direction of the motor after processing is guaranteed, which provides support for the coaxiality requirements of the stator after press-fitting.
  • a brushless motor stator including a stator assembly, also includes:
  • the reducer housing adopts a variable-diameter long cylindrical housing; the stator assembly is installed in the reducer housing; it is partially interference fit with the reducer housing;
  • a limit step is designed to ensure the position consistency of the stator assembly after press-fitting;
  • the stator assembly includes a punching piece, a first insulating sleeve, a second insulating sleeve, and a terminal board.
  • the two ends of the punching piece are respectively provided with a first insulating sleeve and a second insulating sleeve.
  • the punching piece is connected to the reducer housing
  • the body part is contact-fitted, and the terminal board passes through the reducer housing and is connected with an external power supply.
  • the interference fit portion of the stator assembly and the reducer housing is set at 0.03 mm to 0.1 mm on one side.
  • the reducer casing is a long cylindrical casing with symmetrical reinforcement ribs on the outer wall and riveting platforms at the ends.
  • the reducer housing is designed as a long cylinder, which can increase the space in the housing, keep the parts of the reducer housing in accurate mutual positional relationship, and coordinate actions according to the prescribed kinematic relationship.
  • the reducer housing includes three-part walls, and the thickness of the three-part walls decreases gradually.
  • Equal thickness reduction is used for thickness reduction, because the long barrel of the reducer housing is designed in a circular shape, and the use of equal thickness reduction can ensure that the matching size with the stator assembly is consistent and the strength does not deteriorate.
  • the reinforcing ribs are arranged symmetrically on the outer wall of the reducer housing.
  • the ribs play the role of supporting the strength of the long barrel of the reducer housing, and at the same time provide enough space for the riveting table to press-fit the stator assembly for riveting axial limit, further ensuring that the stator will not move axially during work.
  • a limiting end cover is provided at the end of the reducer housing, and the limiting end cover is tightly fitted with the reducer housing to protect the internal structure of the housing on the one hand and prevent the stator assembly from being axially dislodged on the other hand.
  • a method for fixing a stator of a brushless motor comprising the steps of:
  • Step A Assemble the stamping piece, the first insulating sleeve, the second insulating sleeve, and the wiring board into parts, wind the copper wire on the stator assembly, leave the wire ends on the terminal of the second insulating sleeve, and pass the wiring
  • the board is assembled into a stator assembly after welding the terminals;
  • Step B Fix the reducer housing, clamp the stator assembly and press it into the reducer housing, so that the stator assembly and the reducer housing are axially matched, and the punching pieces of the stator assembly are aligned with the reducer Partial contact fit of the inner wall of the shell;
  • Step C After the stator assembly is press-fitted into the reducer housing, the wiring board in the stator assembly passes through the reducer housing, and the wiring board is connected to the external power supply to assist in limiting the axial displacement of the stator assembly during work.
  • the punching piece of the stator assembly starts to contact and fit with the middle part of the inner wall of the reducer housing, and the length of the mating surface of the punching piece is 1/4 to 1/2 of the length of the punching piece;
  • the position of the riveting platform on the inner wall of the device housing is pier riveted to further axially limit the punching piece.
  • a brushless motor includes a motor stator and a rotor, and the rotor is coaxially arranged in the motor stator.
  • the brushless motor is applied in an automobile wiper system.
  • the present invention firstly uses reinforcing ribs outside the casing of the variable-diameter long-tube structure reducer to increase the strength of the long-tube, and then uses the interference fit between the reducer casing and the stator punch to replace the screws
  • the positioning can also be fixed by riveting structure at the end to increase the safety margin design of the axial limit.
  • the design of the reducer housing and the stator is an interference fit, and the stator is pressed into the structure of the reducer housing. , the position between the stator and the reducer housing is kept still due to friction, that is, the circumferential direction does not rotate, and then it is fixed with the limit end cover.
  • the stator is riveted and fixed at the position of the riveting table on the end face to ensure that it does not come out in the axial direction. .
  • the present invention solves the problem of large volume, heavy weight and non-coaxiality of the fixed stator of the brushless front wiper motor, and innovatively designs the structure of the reducer housing of the front wiper motor; the reducer housing adopts variable diameter Long barrel shell structure; the variable diameter shell can be understood as a conical profile, the conical profile design has good guidance, which can effectively ensure that the stator assembly always moves in a straight line along the axis during the process of press-fitting, until the press-fitting is in place The coaxiality of the fixed stator can be ensured by being in contact with the limit step.
  • the present invention designs a long cylinder type reducer housing, the motor stator is all embedded in the reducer housing for assembly, and an axial limit table is designed in the long cylinder of the reducer housing to fix the stator when pressing.
  • Axial limit close to the position of the bearing chamber in the middle of the reducer housing, design a limit step to ensure the position consistency of the stator assembly after press-fitting, the thickness here is 2.5mm ⁇ 3.2mm to prevent the stator from being press-fitted during press-fitting Not vertical, or the pressing depth is too deep, causing the winding to be damaged and short-circuited.
  • the limit table and other positions of the reducer housing are clamped and processed at one time, so the perpendicularity between the surface of the limit table and the axial direction of the motor after processing is guaranteed, which provides support for the coaxiality requirements after the stator is press-fitted.
  • Fig. 1 is an isometric view after the stator of the present invention is press-fitted into the reducer housing;
  • Fig. 2 is a cross-sectional view of the stator of the present invention after being press-fitted into the reducer housing;
  • Fig. 3 is a sectional view of the reducer housing of the present invention.
  • stator assembly 11, punching sheet; 12, first insulating sleeve; 13, second insulating sleeve; 14, wiring board; 2, reducer housing; 201, reinforcing rib; wall; 205 riveting platform; 206 limit steps.
  • Figure 1 is an isometric view of the stator of the present invention after being press-fitted into the reducer housing.
  • a brushless motor stator includes a stator assembly 1, and also includes: a reducer housing 2, a reducer housing 2 is a long cylindrical housing, and the reducer housing 2 includes three walls 202, 203, 204. The thickness of the wall 202, the wall 203, and the wall 204 decreases gradually.
  • the purpose of designing the long cylinder wall of the reducer housing into three sections is to manufacture a limit table to fix the press-fitting position of the stator assembly, and to design a section that interferes with the stator assembly to prevent the rotation and axial movement of the stator assembly.
  • the three-part wall The purpose and technical advantages of decreasing thickness, first of all, the thickest part is the bearing chamber near the middle of the reducer housing, where a limit step is needed to ensure the position consistency of the stator assembly after press-fitting, the thickness here is 2.5mm ⁇ 3.2mm, the middle part is the part designed for interference fit with the stator assembly, the length is 1/4 to 1/2 of the length of the stator assembly, because if the entire stator assembly has interference, the pressure will be very large during press-fitting, and it is easy to press If the stator assembly is damaged or the reducer casing is crushed, this part needs to be machined later to ensure the interference, and then the third part is the thickness near the mouth of the reducer casing, which is naturally drawn, and the thickness here is 1.5mm ⁇ 2mm, it is a clearance fit with the stator assembly.
  • the outer wall of the reducer housing 2 is provided with reinforcing ribs 201, and there are two reinforcing ribs 201, and the reinforcing ribs 201 are arranged on the outer wall of the reducer housing 2 in a symmetrical manner.
  • Two reinforcing ribs are designed on the outer wall of the long cylinder of the reducer housing to support the strength of the long cylinder of the reducer housing.
  • a riveting table 205 is provided in the protruding space of the inner wall of the reducer housing 2 corresponding to the reinforcing ribs 201.
  • a riveting structure can also be designed on the reducer housing at the outermost end of the stator to ensure that the stator will not move axially after assembly; in order to ensure the consistency of the matching position between the outer surface of the stator and the reducer housing ,
  • the stator laminations are rotated and riveted, each piece is rotated 60 degrees (but not limited to 60 degrees), and every 6 pieces is a rotation cycle.
  • the length of the entire stator there are at least 3 or more rotation riveting cycles; even if it is installed in a long cylindrical shell, it can still effectively ensure the coaxiality of the outer diameter and inner diameter of the stator at each position, allowing the stator to be pressed in and decelerated After the reducer housing, the coaxiality between the inner diameter of the stator and the reducer housing meets the design tolerance requirements.
  • the stator assembly 1 includes a punching plate 11, a first insulating sleeve 12, a second insulating sleeve 13, wiring Plate 14, the two ends of the punching piece 11 are respectively provided with a first insulating sleeve 12 and a second insulating sleeve 13, the punching piece 11 is partially in contact with the reinforcing rib 201, and the middle part of the punching piece 11 and the reinforcing rib 201 starts to contact and cooperate, and the punching piece 11
  • the length of the mating surface is 1/4 to 1/2.
  • the terminal board 14 passes through the reducer housing 2 and is connected to an external power source.
  • stator assembly 1 and the reducer housing 2 are interference fit, and the unilateral interference between the stator assembly 1 and the reducer housing 2 is set at 0.03 mm to 0.1 mm.
  • the assembly of the stator assembly 1 and the reducer housing 2 does not have any fasteners, and the stator assembly 1 is assembled by a punching piece 11, a first insulating sleeve 12, a second insulating sleeve 13 and a terminal block 14
  • the stator assembly 1 is press-fitted into the reducer housing 2 to provide a fixed energized wire condition for the wiper motor to work.
  • the magnetic field lines will cut the energized wire to obtain rotational force.
  • the front view section of the assembled components is made to form Figure 2.
  • the invention also proposes a brushless motor product.
  • the designed brushless motor includes a motor stator and a rotor, and the rotor is coaxially arranged in the motor stator. It can be mainly used in the wiper system of automobiles (it can also be used in other fields), providing power for windshield wipers or other equipment.
  • the invention solves the problems of large volume, complex structure, heavy weight and non-coaxiality of the fixed stator of the brushless front wiper motor.
  • An innovative design of the shell structure of the wiper motor reducer.
  • a method for fixing the stator of a brushless motor which is particularly suitable for fixing any of the motor stators as described above, the fixing method includes the following steps:
  • Step A Assemble the stamping piece 11, the first insulating sleeve 12, the second insulating sleeve 13, and the wiring board 14 into parts, wind the copper wire on the stator assembly 1, and leave the wire ends in the terminal of the second insulating sleeve 13 On, the terminal assembly is assembled into the stator assembly 1 after being welded through the terminal block 14;
  • Step B Fix the reducer housing 2, clamp the stator assembly 1 and press it into the reducer housing 2, so that the stator assembly 1 and the reducer housing 2 are matched in the axial direction, and the punching piece 11 of the stator assembly 1 and the wall 202 part Interference fit, and then a riveting platform 205 is designed above the position of the wall 204, and the tooling is riveted to the riveting platform 205, and the punching piece 11 is pressed inward to further increase the axial fixing force;
  • Step C after the stator assembly 1 is press-fitted into the reducer housing 2, the terminal board 14 in the stator assembly 1 passes through the reducer housing 2, the terminal board 14 is connected to the external power supply, and the auxiliary limit stator assembly 1 is working Axial displacement in .
  • Die-casting is made of die-casting aluminum alloy after smelting, and then the mating surface is machined to make the precision meet the design requirements.
  • the punching piece 11, insulating sleeve 12, insulating sleeve 13 and terminal board 14 are assembled into parts, and then wound on the stator assembly 1. Copper wire is made, and the wire ends are all concentratedly left on the terminal posts of the insulating sleeve 13, and then the terminals are welded through the terminal block 14 to become the stator assembly 1.
  • stator assembly 1 is not subject to axial force, so the interference fit between the stator assembly 1 and the reducer housing 2 should not be too large.
  • edge interference 0.03 mm to 0.1 mm, the stator assembly 1 can be easily press-fitted into the reducer housing 2 and stop at the limit platform position of 202 .
  • the reducer housing 2 has a draft angle of 2°.
  • the length of the mating surface reaches 1/4 to 1/2 of the thickness of the part to ensure that the part does not come out. Therefore, in this solution, the position of 202 is close to 203 for a certain distance, which is not in contact with the stator assembly 1, and the contact position is a section of 203.
  • the actual axial cooperation between the stator part 1 and the reducer housing 2 is reflected in the punching plate 11 and the wall 203
  • the length of the mating surface of the punching sheet 11 is 1/4 to 1/2.
  • pier riveting is implemented at the position of the riveting table 205 to strengthen and fix the axial position of the stator component 1 to further ensure that the stator component 1 is fixed at the deceleration speed. There will be no displacement in the device housing 2.
  • the terminal board 14 in the stator assembly 1 passes through the reducer housing 2, and the terminal board 14 is finally connected to the external power supply, which can assist the positioning of the stator assembly 1 during work.
  • the present invention designs a long cylindrical reducer housing, the motor stator is fully embedded in the reducer housing for assembly, and an axial limit table is designed in the long cylinder of the reducer housing to fix the axial limit when the stator is press-fitted. position, to prevent the stator from being not vertical during press-fitting, or the depth of the press-fitting is too deep to cause the winding to be damaged and short-circuited.
  • the limit table and other positions of the reducer housing are clamped and processed at one time, so the perpendicularity between the surface of the limit table and the axial direction of the motor after processing is guaranteed, which provides support for the coaxiality requirements of the stator after press-fitting.
  • Embodiment 1 A stator of a brushless motor, including a stator assembly and a reducer housing, wherein the reducer housing adopts a tapered long cylindrical housing, and the end that cooperates with the end cover has a larger diameter; on the periphery of the reducer housing Two reinforcing ribs are evenly arranged; the stator assembly is installed in the reducer housing; it is interference fit with the reducer housing part, that is, the small diameter part is interference fit, and the length of the matching section is about 1/3 of the length of the stator assembly ; In this embodiment, the length of the stamping piece of the stator assembly is 30mm, and the length of the interference fit with the middle part of the long barrel of the reducer housing is controlled at about 10mm.
  • a limit step is designed to ensure the position consistency of the stator assembly after press-fitting;
  • the verticality is guaranteed, which provides support for the coaxiality requirements of the stator after press-fitting;
  • the tapered long cylindrical shell can effectively ensure that when the stator assembly is press-fitted, it will always move in a straight line along the axis. It is flatly fitted with the limit step surface; that is, the coaxial installation and cooperation are completed.
  • the stator assembly includes a punching piece, a first insulating sleeve, a second insulating sleeve, and a wiring board, and the two ends of the punching piece are respectively provided with a first insulating sleeve and a second insulating sleeve, and the punching piece and The housing part of the reducer is contact-fitted, and the wiring board passes through the housing of the reducer and is connected to an external power supply.
  • the specifically designed brushless motor stator includes a stator assembly and a reducer housing, wherein the reducer housing adopts a variable-diameter long cylindrical housing, and the reducer housing has 2 °Draft slope, the diameter of the end mated with the end cover is larger; three reinforcing ribs are evenly distributed on the periphery of the reducer housing; the stator assembly is installed in the reducer housing; interference fit with the reducer housing part , that is, the small diameter part is interference fit, and the length of the fit section is about 1/2 of the length of the stator assembly; the motor stator assembly is fully embedded in the reducer housing for assembly, and an axial limit table is designed in the long barrel of the reducer housing to fix the Axial limit during stator press-fitting prevents the stator from being not vertical during press-fitting, or the depth of the press-fitting is too deep, causing the winding to be damaged and short-circuited.
  • the punching piece of the stator assembly, the first insulating sleeve, the second insulating sleeve, and the wiring board are assembled into parts, and the stator assembly is wound on the stator assembly.
  • Make copper wires leave the wire ends on the terminals of the second insulating sleeve, weld the terminals through the terminal board and assemble them into a stator assembly; after the stator assembly is prepared, use an auxiliary fixing mechanism to fix the reducer housing to ensure assembly The position of the reducer housing is fixed during the process; the stator assembly is clamped by the auxiliary fixture and pressed into the reducer housing.
  • the structure Since the reducer housing adopts a conical surface structure, the structure has good guiding performance and can effectively ensure the pressing process.
  • the stator assembly always moves along the axial direction of the reducer housing until the end surface of the stator assembly fits with the limit step surface of the reducer housing; after the assembly is completed, the stator assembly forms an interference fit with the reducer housing in the axial direction , the punching piece of the stator assembly is in contact with the inner wall of the reducer housing to ensure the fixation of the stator assembly; in order to further ensure the stability of the entire assembly, a reinforcing rib is provided on the outer wall of the reducer housing, and the reinforcing rib The corresponding inner wall forms a space protruding outward; the space is filled with a riveting table for pier riveting, and the upper end surface of the riveting table is lower than the upper surface of the punching piece; by pier riveting the riveting table, the stator assembly is further pressed Install the axial limit; at the same time, the end of
  • the structure and assembly method designed by the present invention can realize the coaxial installation and fixation of the stator assembly without any fasteners; specifically; Reinforcing ribs are used on the outside of the body to ensure the support strength of the long cylinder shell, and then the interference fit between the reducer shell and the stator punch is used to replace the positioning of the screws, and the riveting structure can also be used at the end to fix the axial position and increase the axial position.
  • the safety margin design of the limit position is designed to be an interference fit between the reducer housing and the stator.
  • the position between the stator and the reducer housing remains fixed due to friction, that is The circumferential direction does not rotate, and the axial direction, on the one hand, set a limit end cover at the end of the reducer housing to limit the position; Ensure that the axial direction does not come out.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

L'invention concerne un stator de moteur sans balais, un procédé de fixation de stator de moteur sans balais et un moteur sans balais. Un stator comprend un ensemble stator (1) et un boîtier de réducteur de vitesse (2), le boîtier de réducteur de vitesse étant d'une forme de conception de diamètre variable, la paroi externe étant pourvue d'une nervure de renforcement (201) et un épaulement de limitation de position (206) étant disposé au niveau d'une position inférieure de la paroi interne. L'ensemble stator comprend une tôle perforée (11), un premier manchon isolant (12), un second manchon isolant (13) et une carte de câblage (14), les deux extrémités de la tôle perforée étant respectivement pourvues d'un premier manchon isolant et d'un second manchon isolant, la tôle perforée étant en ajustement de contact avec la partie de boîtier de réducteur de vitesse et la carte de câblage pénétrant à travers le boîtier de réducteur de vitesse et étant connectée à une alimentation électrique externe. L'ensemble stator est en ajustement serré avec le boîtier de réducteur de vitesse ; en même temps, une structure de rivetage est conçue sur le boîtier de réducteur de vitesse au niveau de l'extrémité la plus à l'extérieur du stator, garantissant que le stator ne peut pas se déplacer axialement après l'assemblage et résolvant les problèmes selon lesquels un moteur sans balais d'essuie-glace avant est de grande taille et lourd et le stator n'est pas coaxial après avoir été fixé.
PCT/CN2022/000115 2021-12-30 2022-08-11 Stator de moteur sans balais, procédé de fixation de stator de moteur sans balais et moteur sans balais WO2023123527A1 (fr)

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CN202111680221.4 2021-12-30
CN202111680221.4A CN114301195B (zh) 2021-12-30 2021-12-30 一种无刷电机定子、无刷电机定子的固定方法及无刷电机

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WO2023123527A1 true WO2023123527A1 (fr) 2023-07-06

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114301195B (zh) * 2021-12-30 2024-09-13 贵阳万江航空机电有限公司 一种无刷电机定子、无刷电机定子的固定方法及无刷电机

Citations (6)

* Cited by examiner, † Cited by third party
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