CN109038959B - Electric erosion preventing structure of motor bearing, stator and motor - Google Patents
Electric erosion preventing structure of motor bearing, stator and motor Download PDFInfo
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- CN109038959B CN109038959B CN201811069219.1A CN201811069219A CN109038959B CN 109038959 B CN109038959 B CN 109038959B CN 201811069219 A CN201811069219 A CN 201811069219A CN 109038959 B CN109038959 B CN 109038959B
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- 230000003628 erosive effect Effects 0.000 title claims abstract description 18
- 238000005536 corrosion prevention Methods 0.000 claims abstract description 12
- 230000007797 corrosion Effects 0.000 claims description 33
- 238000005260 corrosion Methods 0.000 claims description 33
- 238000005452 bending Methods 0.000 claims description 23
- 238000003825 pressing Methods 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/0094—Structural association with other electrical or electronic devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/03—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations
- H01R11/05—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations the connecting locations having different types of direct connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/70—Insulation of connections
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention provides an electric corrosion prevention structure of a motor bearing, a stator and a motor. The motor bearing anti-electric erosion structure comprises a front end cover (1), a rear end cover (2) and a conductive connecting piece connected between the front end cover (1) and the rear end cover (2), wherein one end of the conductive connecting piece is matched with the front end cover (1) through a boss (3) and a groove (4) to form a self-locking tight-fit clamping position. According to the electric erosion preventing structure of the motor bearing, the problem of low reliability of the electric erosion preventing structure on the motor can be effectively solved.
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to an electric corrosion prevention structure of a motor bearing, a stator and a motor.
Background
The direct current plastic package motor becomes the main stream of motor industry development in the future, and solves the problem of electric erosion prevention of the plastic package motor bearing. As shown in fig. 1, the bearing anti-electric corrosion method adopted by the plastic package motor at present mainly comprises the steps of sticking a conductive adhesive tape on a plastic package shell to connect a front end cover 1 and a rear end cover 2 of the motor, but has low reliability and great potential safety hazard; or the stator core is connected with the end cover by the contact pin, but the method can not completely solve the problem of electric corrosion of the bearing of the plastic package motor.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to provide the motor bearing anti-electric erosion structure, the stator and the motor, and the problem that the reliability of the anti-electric erosion structure on the motor is low can be effectively improved.
In order to solve the problems, the invention provides an electric erosion prevention structure of a motor bearing, which comprises a front end cover, a rear end cover and a conductive connecting piece connected between the front end cover and the rear end cover, wherein one end of the conductive connecting piece is matched with the front end cover through a boss and a groove to form a self-locking close-fitting clamping position.
Preferably, one end of the conductive connecting piece is in a shape like a Chinese character 'ji', a boss is formed on at least one side wall of the Chinese character 'ji', a groove is formed on the front end cover, the Chinese character 'ji' is clamped on the front end cover, and the boss is clamped in the groove.
Preferably, the grooves are through grooves, two bosses are respectively arranged on two side walls of the L-shaped structure, and the bosses are clamped into the through grooves from two ends of the through grooves.
Preferably, the boss comprises a cylindrical section and a ball head section, the ball head section and the cylindrical section are clamped into the groove, and the cylindrical section is matched with the side wall surface of the groove.
Preferably, the boss is a sphere, the groove is a cylindrical through groove, and the distance between two side walls of the L-shaped structure is h T The thickness of the position where the front end cover is matched with the conductive connecting piece is h D The diameter of the groove is L K The diameter of the matched position of the boss and the groove is L T The sphere diameter of the boss is R, the central angle of the boss is theta, wherein,
preferably, one side of the inverted-V-shaped structure is provided with a bevel edge section and a straight edge section in sequence from the opening end to the position where the boss is located, and the distance between the bevel edge section and the other side increases gradually along the direction away from the boss.
Preferably, the oblique angle of the hypotenuse section is 15 DEG.gtoreq.beta.gtoreq.5 DEG with respect to the straight section.
Preferably, a plurality of bosses are arranged on one side wall of the U-shaped structure, and a plurality of grooves are arranged on the front end cover.
Preferably, the front end cap is connected in the circumferential direction with a plurality of conductive connectors.
Preferably, the conductive connecting piece comprises an elastic piece and a lug plate, a self-locking tight-fit clamping position is formed between the elastic piece and the front end cover through the matching of the boss and the groove, and the lug plate is connected with the rear end cover.
Preferably, the thickness of the spring plate is 0.3 mm-0.8 mm.
Preferably, the spring plate is in clamping fit with the wiring lug.
Preferably, one end of the elastic sheet, which is far away from the boss, is provided with a clamping groove, and the wiring lug is provided with a buckle which is clamped into the clamping groove.
Preferably, the end part of the elastic sheet is provided with a bending sheet, and the clamping groove is arranged on the bending sheet.
Preferably, the buckle is a bending plate, and the bending plate extends towards the clamping groove.
Preferably, the outer edge of the bending piece is provided with a flange for limiting the buckle.
Preferably, the lug further comprises a guide rail, the guide rail is sleeved outside the bending piece, and the buckle is arranged on one side edge of the guide rail.
Preferably, the motor bearing anti-electric erosion structure further comprises an insulating sheath, wherein the insulating sheath is positioned at the connecting position of the elastic sheet and the wiring lug and is sleeved outside the elastic sheet and the wiring lug.
Preferably, the insulating sheath is provided with a limit boss for pressing the elastic sheet.
Preferably, the motor bearing anti-electric erosion structure further comprises a stator core, wherein the stator core is provided with an embedded groove, and the end part of the wiring lug is embedded into the stator core.
According to another aspect of the present invention, there is provided a stator including the above-described motor bearing galvanic corrosion prevention structure.
According to still another aspect of the present invention, there is provided a motor including the above-described motor bearing galvanic corrosion preventing structure.
The invention provides an electric corrosion prevention structure of a motor bearing, which comprises a front end cover, a rear end cover and a conductive connecting piece connected between the front end cover and the rear end cover, wherein one end of the conductive connecting piece is matched with the front end cover through a boss and a groove to form a self-locking close-fitting clamping position. The front end cover of the motor bearing anti-electric corrosion structure and the conductive connecting piece form a self-locking tight-fit clamping position in a mode of matching with the grooves through the boss, so that the connection strength and connection reliability between the front end cover and the conductive connecting piece can be enhanced, the bearing anti-electric corrosion function of the motor is guaranteed, and meanwhile, the EMC performance of the motor can be improved.
Drawings
FIG. 1 is a cross-sectional view of a motor with an anti-galvanic corrosion structure for a bearing of a prior art plastic-packaged brushless motor;
FIG. 2 is a cross-sectional view of a motor bearing anti-galvanic corrosion structure according to an embodiment of the invention;
FIG. 3 is an exploded view of an electrical erosion preventing structure for a motor bearing according to a first embodiment of the present invention;
FIG. 4 is a disassembled cross-sectional view of the electric motor bearing anti-galvanic corrosion structure according to the first embodiment of the invention;
fig. 5 is an enlarged view at L of fig. 4;
FIG. 6 is an enlarged view at M of FIG. 4;
fig. 7 is a sectional view of a motor bearing anti-galvanic corrosion structure according to a first embodiment of the invention;
FIG. 8 is a diagram showing the structure of the cooperation between the elastic sheet and the front end cover of the anti-galvanic corrosion structure of the motor bearing according to the first embodiment of the invention;
FIG. 9 is a diagram showing a structure of matching between a spring plate and a lug plate of an anti-galvanic corrosion structure of a motor bearing according to a first embodiment of the invention;
FIG. 10 is a perspective view of a spring plate of an anti-galvanic corrosion structure of a motor bearing according to a first embodiment of the invention;
FIG. 11 is a schematic view of a lug of an anti-galvanic corrosion structure of a motor bearing according to a first embodiment of the invention;
fig. 12 is a perspective view showing an insulating sheath of an electric corrosion prevention structure of a motor bearing according to a first embodiment of the present invention;
fig. 13 is a schematic perspective view of a front end cover of a motor bearing anti-galvanic corrosion structure according to a first embodiment of the invention;
FIG. 14 is a cross-sectional view of a motor bearing anti-galvanic corrosion structure according to a second embodiment of the invention;
FIG. 15 is a diagram showing the structure of the cooperation between the spring plate and the front end cover of the anti-galvanic corrosion structure of the motor bearing according to the second embodiment of the invention;
FIG. 16 is a diagram showing a structure of matching between a spring plate and a lug plate of an anti-galvanic corrosion structure of a motor bearing according to a second embodiment of the invention;
FIG. 17 is a perspective view of a spring plate of an anti-galvanic corrosion structure of a motor bearing according to a second embodiment of the invention;
fig. 18 is a perspective view showing a terminal plate of an electric corrosion prevention structure of a motor bearing according to a second embodiment of the present invention.
The reference numerals are expressed as:
1. a front end cover; 2. a rear end cover; 3. a boss; 4. a groove; 5. a cylindrical section; 6. a ball head section; 7. a table; 8. a hypotenuse segment; 9. a spring plate; 10. a wire connection piece; 11. a clamping groove; 12. a buckle; 13. bending the sheet; 14. a flange; 15. a guide rail; 16. an insulating sheath; 17. and a limit boss.
Detailed Description
Referring to fig. 2 to 18 in combination, according to an embodiment of the present invention, the motor bearing anti-galvanic corrosion structure includes a front end cover 1, a rear end cover 2, and a conductive connecting member connected between the front end cover 1 and the rear end cover 2, wherein one end of the conductive connecting member and the front end cover 1 cooperate to form a self-locking tight-fitting clamping position through a boss 3 and a groove 4.
The front end cover 1 of the motor bearing anti-electric erosion structure and the conductive connecting piece form a self-locking tight-fit clamping position in a mode of matching with the grooves 4 through the boss 3, so that the connection strength and connection reliability between the front end cover 1 and the conductive connecting piece can be enhanced, the bearing anti-electric erosion function of the motor is ensured, and meanwhile, the EMC performance of the motor can be improved.
Meanwhile, through the connection mode, the problems that the traditional plastic package brushless motor bearing has relatively complex anti-electric corrosion process, the conductive adhesive tape is not resistant to high temperature and high humidity environment, and is easy to fall off and damage in the transportation, installation and operation processes and low in reliability can be solved.
By adopting the mode of the invention, the structure of the motor is hardly changed, so that the transformation cost can be reduced, the processing cost is saved, and the motor is easy to popularize and realize.
The structure has good reliability, effectively ensures that the front end cover 1 is connected and conducted with the rear end cover 2, reduces the voltage difference between the front bearing and the rear bearing to zero, can avoid the bearing from being corroded, has simple structure, safety and reliability, simple processing technology, can improve the performance of the product, and is favorable for actual processing production and mass production application.
Preferably, one end of the conductive connecting piece is in a shape like a Chinese character 'ji', a boss 3 is formed on at least one side wall of the Chinese character 'ji', a groove 4 is formed on the front end cover 1, the Chinese character 'ji' is clamped on the front end cover 1, and the boss 3 is clamped into the groove 4. The U-shaped structure is clamped on two end faces of the front end cover 1, a first layer of clamping connection can be formed between the conductive connecting piece and the front end cover 1, the boss 3 is clamped in the groove 4, a second layer of clamping connection can be formed between the conductive connecting piece and the front end cover 1, the boss 3 can be stably pressed in the groove 4 through clamping fit between the conductive connecting piece and the front end cover 1, separation between the conductive connecting piece and the front end cover 1 is effectively prevented, and stability and reliability of a connecting structure between the conductive connecting piece and the front end cover 1 are improved.
The grooves 4 are through grooves, two bosses 3 are respectively arranged on two side walls of the U-shaped structure, and the bosses 3 are clamped into the through grooves from two ends of the through grooves. The boss 3 is clamped in from the two sides of the through groove, so that on one hand, the installation difficulty can be reduced, on the other hand, the through groove can be clamped in from the two sides, and the clamping effect is improved.
The boss 3 may be one, and provided on one side wall of the figure-shaped structure, and then snapped into the groove 4 from one side of the groove 4.
The boss 3 comprises a cylindrical section 5 and a ball head section 6, the ball head section 6 and the cylindrical section 5 are clamped into the groove 4, and the cylindrical section 5 is matched with the side wall surface of the groove 4. By making the cylindrical section 5 and the groove 4 form a surface fit, good fit between the boss 3 and the groove can be realized, the problem that the ball head section 6 is easy to slide out of the groove 4 due to the existence of a guiding inclined plane when being matched with the side wall of the groove 4 is avoided, and the boss 3 is effectively prevented from being separated from the groove 4. The existence of the ball head section 6 can play a guiding role in the installation of the boss 3 in the groove 4, reduce the resistance of the boss 3 in the groove 4, reduce the installation difficulty of the boss 3 in the groove 4 and improve the installation efficiency.
In addition, an annular matching structure is formed between the boss 3 and the groove 4 of the front end cover 1, so that the problems of relatively complex anti-electric corrosion process and low reliability of the traditional motor bearing can be solved, and the matching is more firm.
In another embodiment, the boss 3 is a ball table 7, the groove 4 is a cylindrical through groove, and the distance between two side walls of the L-shaped structure is h T The thickness of the position where the front end cover 1 is matched with the conductive connecting piece is h D The diameter of the groove 4 is L K The diameter of the position where the boss 3 is matched with the groove 4 is L T The sphere diameter of the boss 3 is R, the central angle of the boss 3 is theta, wherein,
through limiting the above-mentioned size relation, not only can realize the self-locking function between conductive connection piece and the front end housing 1, can ensure simple to operate moreover, can guarantee the cooperation intensity between the two.
Preferably, one side edge of the inverted-V-shaped structure is provided with a bevel edge section 8 and a straight edge section in sequence from the opening end to the position of the boss 3, and the distance between the bevel edge section 8 and the other side edge increases gradually along the direction away from the boss 3. The bevel edge section 8 can play a role in guiding when the front end cover 1 is clamped into the groove of the Chinese character 'ji' -shaped structure, so that the matching difficulty between the front end cover 1 and the Chinese character 'ji' -shaped structure is reduced, and the assembly efficiency is improved. The straight-edge section can enable the front end cover 1 to be clamped between the two side walls of the U-shaped structure, a stable clamping structure can be formed, and self-locking cooperation is ensured to be more reliable.
Preferably, the inclination angle of the hypotenuse section 8 relative to the straight section is 15 degrees or more and is 5 degrees or more, so that the guiding function can be effectively achieved.
Preferably, the front end cap 1 is connected in the circumferential direction with a plurality of conductive connectors. When two grooves 4 are circumferentially arranged on the front end cover 1, the centers of the two grooves 4 and the center of the front end cover 1 are positioned on the same straight line, and when three grooves 4 are circumferentially arranged on the front end cover 1, the connecting lines between the centers of the three grooves form a regular triangle. Through making the front end housing 1 form conductive connection with a plurality of conductive connection piece in circumference direction, can further guarantee the reliability of conductive connection between the front and back end housing to can realize dual or multiple close-fitting screens, further improve connection structure's stability and reliability.
Referring to fig. 2 to 13 in combination, according to the first embodiment of the present invention, the conductive connecting piece includes a spring plate 9 and a wire connecting piece 10, a self-locking tight-fitting clamping position is formed between the spring plate 9 and the front end cover 1 through cooperation of the boss 3 and the groove 4, and the wire connecting piece 10 is connected with the rear end cover 2. The conductive connecting piece is divided into the elastic sheet 9 and the wiring lug 10, so that the conductive connecting piece is convenient to process, different matching forms and materials can be selected according to different matching structures, and the conductive connection between the conductive connecting piece and the front end cover 1 and the rear end cover 2 can be realized more conveniently. In addition, the elastic deformation capability of the elastic sheet 9 can more conveniently realize the clamping fit with the front end cover 1.
The thickness of the elastic sheet 9 is 0.3-0.8 mm, so that the defect of insufficient deformation capability caused by overlarge thickness of the elastic sheet 9 can be avoided, the assembly difficulty between the elastic sheet 9 and the front end cover 1 is increased, the elastic sheet 9 can be ensured to have enough structural strength, and good matching is realized between the wiring lug 10 and the front end cover 1.
Preferably, the elastic sheet 9 and the wiring sheet 10 are matched in a clamping way, so that the matching of the elastic sheet 9 and the wiring sheet 10 can be realized without tools, the matching structure is simpler, and the matching operation is more convenient.
In this embodiment, a clamping groove 11 is provided at one end of the elastic sheet 9 away from the boss 3, a buckle 12 is provided on the lug 10, and the buckle 12 is clamped into the clamping groove 11.
Preferably, the end of the spring plate 9 is provided with a bending plate 13, and the clamping groove 11 is arranged on the bending plate 13. Through setting up the piece 13 of bending, can change the structural style of draw-in groove 11 to can set up the structural style of draw-in groove 11 according to the structural style of buckle 12, the joint cooperation between buckle 12 and the draw-in groove 11 is realized more conveniently, reduces the cooperation degree of difficulty.
The buckle 12 is a bending plate, and the bending plate extends towards the clamping groove 11. The bending plate extends towards the clamping groove 11, so that when the clamping engagement between the clamping buckle 12 and the clamping groove 11 is required to be realized, the wiring lug 10 is only required to be pressed down, so that the clamping buckle 12 is pressed down towards the clamping groove 11 and clamped into the clamping groove 11.
Preferably, the outer edge of the bending piece 13 is provided with a flange 14 forming a limit for the catch 12. An embedded groove is formed between the flange 14 and the outer edge of the bending piece 13, when the buckle 12 of the wiring piece 10 is clamped into the clamping groove 11, the wiring piece 10 can be embedded into the embedded groove, and a stop effect is formed through the flange 14, so that a good fit is formed between the elastic piece 9 and the wiring piece 10.
The motor bearing anti-electric erosion structure further comprises an insulating sheath 16, wherein the insulating sheath 16 is positioned at the connecting position of the elastic sheet 9 and the wiring lug 10 and sleeved outside the elastic sheet 9 and the wiring lug 10. The insulating sheath 16 is arranged on the winding framework, so that on one hand, an installation foundation can be provided for the installation of the elastic sheet 9 and the wiring lug 10, the stability and the reliability of the connection structure of the elastic sheet 9 and the wiring lug 10 are ensured, and on the other hand, insulating protection can be formed for the elastic sheet 9 and the wiring lug 10.
The insulating sheath 16 is provided with a limit boss 17 for pressing the spring plate 9. The limit boss can limit the installation of the elastic sheet 9 in the insulating sheath 16, so that the assembly effect between the elastic sheet 9 and the wiring lug 10 is ensured, and the installation between the elastic sheet 9 and the wiring lug 10 is convenient and the cooperation is reliable.
Preferably, the anti-electric erosion structure of the motor bearing further comprises a stator core, wherein the stator core is provided with a caulking groove, and the end part of the wiring piece 10 is embedded into the stator core, so that the wiring piece 10 can penetrate into the stator core, and the matching strength is increased.
Referring to fig. 14 to 18 in combination, according to the second embodiment of the present invention, which is different from the first embodiment, the tab 10 further includes a guide rail 15, the guide rail 15 is sleeved outside the bending piece 13, and the buckle 12 is disposed on one side of the guide rail 15. The guide rail here is for example U-shaped.
In this embodiment, the wire connector lug 10 is clamped onto the bending piece 13 from the side wall through the guide rail 15, and the buckle 12 is clamped into the clamping groove 11 on the bending piece 13, so that the two are clamped and matched. Through the cooperation of guide rail 15 and bending piece 13 and the cooperation of buckle 12 and draw-in groove 11, can make realize dual close-fitting screens between shell fragment 9 and the lug 10, not only be convenient for install more, realize auto-lock cooperation moreover easily.
In this embodiment, a plurality of bosses 3 are provided on one side wall of the figure-shaped structure, and a plurality of grooves 4 are provided on the front end cover 1.
When the motor bearing anti-electric erosion structure is assembled, firstly, the boss 3 on the U-shaped structure is clamped into the groove 4 of the front end cover 1 through the U-shaped structure on the elastic sheet 9, then the buckle 12 on the wiring lug 10 is clamped into the clamping groove 11 on the elastic sheet 9, the clamping fit between the elastic sheet 9 and the wiring lug 10 is realized, the insulating sheath 16 is sleeved at the connecting position of the elastic sheet 9 and the wiring lug 10, the elastic sheet 9 is fixed through the limiting boss 17 on the insulating sheath 16, finally, the stator assembly is injection molded, the rotor assembly is pressed into the stator assembly, and the rear end cover 2 is buckled onto the stator assembly, so that the rear end cover 2 is in contact connection with the wiring lug 10.
According to an embodiment of the invention, the stator comprises the above-mentioned motor bearing galvanic corrosion protection structure.
According to an embodiment of the invention, the motor comprises the motor bearing anti-electric corrosion structure.
It will be readily appreciated by those skilled in the art that the above advantageous ways can be freely combined and superimposed without conflict.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention. The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (20)
1. The electric erosion prevention structure of the motor bearing is characterized by comprising a front end cover (1), a rear end cover (2) and a conductive connecting piece connected between the front end cover (1) and the rear end cover (2), wherein one end of the conductive connecting piece is matched with the front end cover (1) through a boss (3) and a groove (4) to form a self-locking tight-fit clamping position;
one end of the conductive connecting piece is of a Chinese character 'ji' shape, at least one side wall of the Chinese character 'ji' shape is provided with the boss (3), the front end cover (1) is provided with the groove (4), the Chinese character 'ji' shape is clamped on the front end cover (1), and the boss (3) is clamped in the groove (4);
the boss (3) is a ball table (7), the groove (4) is a cylindrical through groove, and the distance between the two side walls of the L-shaped structure is h T The thickness of the position where the front end cover (1) is matched with the conductive connecting piece is h D The diameter of the groove (4) is L K The diameter of the position where the boss (3) is matched with the groove (4) is L T The sphere diameter of the boss (3) is R, the central angle of the boss (3) is theta, wherein,
2. the electric corrosion prevention structure of a motor bearing according to claim 1, wherein the grooves (4) are through grooves, the number of the bosses (3) is two, the bosses are respectively arranged on two side walls of the inverted-V-shaped structure, and the bosses (3) are clamped into the through grooves from two ends of the through grooves.
3. The electric corrosion prevention structure of a motor bearing according to claim 1, wherein the boss (3) comprises a cylindrical section (5) and a ball head section (6), the ball head section (6) and the cylindrical section (5) are clamped into the groove (4), and the cylindrical section (5) is matched with a side wall surface of the groove (4).
4. The electric corrosion prevention structure of a motor bearing according to claim 1, wherein a hypotenuse section (8) and a straight section are sequentially arranged from an open end to a position where the boss (3) is located on one side of the zigzag structure, and the hypotenuse section (8) is gradually increased in a distance from the boss (3) to the other side.
5. The electrical bearing galvanic protection structure according to claim 4, wherein the oblique edge section (8) has an inclination angle of 15 ° > β Σ > 5 ° with respect to the straight edge section.
6. The electric corrosion prevention structure of a motor bearing according to claim 1, wherein a plurality of bosses (3) are provided on one side wall of the figure-shaped structure, and a plurality of grooves (4) are provided on the front end cover (1).
7. The motor bearing galvanic corrosion protection structure according to claim 1, wherein the front end cap (1) is connected in a circumferential direction with a plurality of the conductive connection members.
8. The electric motor bearing anti-electric corrosion structure according to any one of claims 1 to 7, wherein the conductive connecting piece comprises an elastic piece (9) and a wiring piece (10), a self-locking tight-fit clamping position is formed between the elastic piece (9) and the front end cover (1) through matching of a boss (3) and a groove (4), and the wiring piece (10) is connected with the rear end cover (2).
9. The electric motor bearing anti-cavitation structure according to claim 8, characterized in that the thickness of the spring plate (9) is 0.3 mm-0.8 mm.
10. The electrical corrosion protection structure of a motor bearing according to claim 8, wherein the spring plate (9) and the lug (10) are in snap fit.
11. The electric corrosion prevention structure of a motor bearing according to claim 10, wherein a clamping groove (11) is formed in one end, far away from the boss (3), of the elastic sheet (9), a buckle (12) is arranged on the wiring lug (10), and the buckle (12) is clamped into the clamping groove (11).
12. The electric corrosion prevention structure of a motor bearing according to claim 11, wherein the end of the spring plate (9) is provided with a bending plate (13), and the clamping groove (11) is arranged on the bending plate (13).
13. The electrical bearing galvanic protection structure according to claim 11, wherein the clasp (12) is a bending plate extending towards the clamping groove (11).
14. The electrical bearing anti-galvanic corrosion structure according to claim 12, characterized in that the outer edge of the bent piece (13) is provided with a flange (14) forming a limit for the snap (12).
15. The electrical corrosion preventing structure for a motor bearing according to claim 12, wherein the terminal (10) further comprises a guide rail (15), the guide rail (15) is sleeved outside the bending piece (13), and the buckle (12) is disposed on one side edge of the guide rail (15).
16. The motor bearing galvanic corrosion protection structure according to claim 8, further comprising an insulating sheath (16), wherein the insulating sheath (16) is located at a connection position of the elastic sheet (9) and the lug (10) and is sleeved outside the elastic sheet (9) and the lug (10).
17. The motor bearing anti-galvanic corrosion structure according to claim 16, characterized in that a limit boss (17) for pressing the spring plate (9) is arranged on the insulating sheath (16).
18. The electrical machine bearing galvanic corrosion protection structure according to claim 8, further comprising a stator core provided with a caulking groove, the end of the terminal piece (10) being embedded in the stator core.
19. A stator comprising the motor bearing galvanic corrosion protection structure of any one of claims 1 to 18.
20. An electric machine comprising the electric machine bearing galvanic corrosion protection structure according to any one of claims 1 to 18.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811069219.1A CN109038959B (en) | 2018-09-13 | 2018-09-13 | Electric erosion preventing structure of motor bearing, stator and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811069219.1A CN109038959B (en) | 2018-09-13 | 2018-09-13 | Electric erosion preventing structure of motor bearing, stator and motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109038959A CN109038959A (en) | 2018-12-18 |
| CN109038959B true CN109038959B (en) | 2023-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811069219.1A Active CN109038959B (en) | 2018-09-13 | 2018-09-13 | Electric erosion preventing structure of motor bearing, stator and motor |
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| Country | Link |
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| CN (1) | CN109038959B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111835105B (en) | 2019-04-18 | 2022-12-06 | 佛山市威灵洗涤电机制造有限公司 | Stator module and motor |
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|---|---|---|---|---|
| CN202488283U (en) * | 2012-02-27 | 2012-10-10 | 广东威灵电机制造有限公司 | Direct current motor with electrolytic corrosion prevention structure |
| CN202931046U (en) * | 2012-09-17 | 2013-05-08 | 珠海格力电器股份有限公司 | Plastic packaging motor stator assembly having electric corrosion resistance structure |
| CN203135653U (en) * | 2012-12-28 | 2013-08-14 | 中山大洋电机制造有限公司 | Plastic-packaged motor |
| CN204615586U (en) * | 2015-05-27 | 2015-09-02 | 湖州越球电机有限公司 | One prevents motor bearings electroerosion apparatus |
| CN208754147U (en) * | 2018-09-13 | 2019-04-16 | 珠海凯邦电机制造有限公司 | The anti-electric arbor of motor bearings, Stator and electrical machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201317459A (en) * | 2011-10-26 | 2013-05-01 | Assoma Inc | Permanent magnet canned pump structure improvement |
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2018
- 2018-09-13 CN CN201811069219.1A patent/CN109038959B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202488283U (en) * | 2012-02-27 | 2012-10-10 | 广东威灵电机制造有限公司 | Direct current motor with electrolytic corrosion prevention structure |
| CN202931046U (en) * | 2012-09-17 | 2013-05-08 | 珠海格力电器股份有限公司 | Plastic packaging motor stator assembly having electric corrosion resistance structure |
| CN203135653U (en) * | 2012-12-28 | 2013-08-14 | 中山大洋电机制造有限公司 | Plastic-packaged motor |
| CN204615586U (en) * | 2015-05-27 | 2015-09-02 | 湖州越球电机有限公司 | One prevents motor bearings electroerosion apparatus |
| CN208754147U (en) * | 2018-09-13 | 2019-04-16 | 珠海凯邦电机制造有限公司 | The anti-electric arbor of motor bearings, Stator and electrical machine |
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| Publication number | Publication date |
|---|---|
| CN109038959A (en) | 2018-12-18 |
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