CN108964335B - Structure for reducing shaft voltage and plastic package motor adopting structure for reducing shaft voltage - Google Patents
Structure for reducing shaft voltage and plastic package motor adopting structure for reducing shaft voltage Download PDFInfo
- Publication number
- CN108964335B CN108964335B CN201811021220.7A CN201811021220A CN108964335B CN 108964335 B CN108964335 B CN 108964335B CN 201811021220 A CN201811021220 A CN 201811021220A CN 108964335 B CN108964335 B CN 108964335B
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- Prior art keywords
- end cover
- wire
- stator core
- shaft voltage
- metal terminal
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- 239000002184 metal Substances 0.000 claims description 55
- 229910052751 metal Inorganic materials 0.000 claims description 55
- 239000002390 adhesive tape Substances 0.000 claims description 21
- 239000004020 conductor Substances 0.000 claims description 21
- 238000003466 welding Methods 0.000 claims description 16
- 238000005452 bending Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 6
- 210000002105 tongue Anatomy 0.000 description 25
- 238000004804 winding Methods 0.000 description 6
- 238000001746 injection moulding Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000011889 copper foil Substances 0.000 description 3
- 239000012778 molding material Substances 0.000 description 3
- 239000005022 packaging material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
Classifications
-
- 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
-
- 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
Abstract
The invention discloses a structure for reducing shaft voltage and a plastic package motor adopting the structure for reducing shaft voltage, which relate to the field of motors. The invention comprises a wire, a stator core electric connector and an end cover electric connector; the first end of the wire is electrically connected with the first end cover, the wire is electrically connected with the stator core through the stator core electrical connector, and the second end of the wire is electrically connected with the second end cover through the end cover electrical connector arranged on the insulating framework, so that the first end cover, the stator core and the second end cover are in an equipotential state. According to the technical scheme, through the structure, the end covers on the two sides are effectively conducted with the stator core to form equipotential, so that the shaft voltage is greatly reduced, the bearing electric corrosion risk is reduced, the service life and reliability of the motor are ensured, and the applicability of the product is wider.
Description
Technical Field
The invention relates to the field of motors, in particular to a structure for reducing shaft voltage and a plastic package motor adopting the structure for reducing the shaft voltage.
Background
In the existing plastic package EC (BLDC) motor, since a stator core is insulated from a front end cover and a rear end cover after the stator is plastic-packaged, a bearing raceway oil film is broken down by shaft voltage due to over-high shaft voltage caused by unbalanced high-frequency current and winding, and electric corrosion of an inner ring and an outer ring and a ball is always a key factor influencing the service life of the motor. The current industry countermeasure mainly uses electric wires to weld and conduct the front and rear end covers, or uses conductive adhesive tape to bond the front and rear end covers on the surface of the stator (the reliability of the method is poor), so that the front and rear end covers form equal potential.
Disclosure of Invention
The invention aims to solve the technical problems and the technical task of improving the prior art, and provides a structure for reducing the shaft voltage and a plastic package motor adopting the structure for reducing the shaft voltage so as to achieve the aims of preventing bearing electric corrosion and improving the service life and reliability of the motor. For this purpose, the present invention adopts the following technical scheme.
A structure for reducing shaft voltage comprises a wire, a stator core electric connector and an end cover electric connector; the first end of the wire is electrically connected with the first end cover, the wire is electrically connected with the stator core through the stator core electrical connector, and the second end of the wire is electrically connected with the second end cover through the end cover electrical connector arranged on the insulating framework, so that the first end cover, the stator core and the second end cover are in an equipotential state. According to the technical scheme, through the structure, the end covers on the two sides are effectively conducted with the stator core to form equipotential, so that the shaft voltage is greatly reduced, the bearing electric corrosion risk is reduced, the service life and reliability of the motor are ensured, and the applicability of the product is wider.
As a preferable technical means: one section of the wire is provided with an insulating sleeve, the conductor of the other section of wire is exposed, the wire part is axially arranged along the outer periphery of the stator core, and the exposed conductor part is clung to the outer periphery of the stator core through an electric connector of the stator core. According to the technical scheme, the exposed part of the conductor is electrically connected with the stator core, so that the conductor is electrically connected with the stator core.
As a preferable technical means: the stator core electric connector is a conductive adhesive tape, and the conductive adhesive tape clings the exposed part of the conductor to the stator core. And covering the exposed conductor part of the lead with the outer circle of the stator core to firmly bond and conduct. The conductive adhesive tape of the technical scheme can be a double-sided conductive adhesive tape.
As a preferable technical means: the outside of conductive tape wrap insulating tape outside, the width of insulating tape is greater than conductive tape width, and insulating tape's width is greater than the length that is located the exposed portion of stator core periphery side conductor in order to cover the exposed portion of conductor. The insulating tape is wound outside the conductive tape to prevent the injection molding plastic packaging material from entering.
As a preferable technical means: the end cover electric connecting piece is provided with a wire connecting part and an elastic seesaw, the elastic seesaw is propped against the second end cover, and the second end of the wire is electrically connected with the end cover electric connecting piece through the wire connecting part; the end cover electric connecting piece is electrically connected with the second end cover through an elastic seesaw pressed against the second end cover. The elastic seesaw abuts against the second end cover, and reliable electric connection is achieved.
As a preferable technical means: the end cover electric connector comprises a first metal terminal and a second metal terminal, wherein the first metal terminal is provided with a wire connecting part, a connecting tongue and an inserting part, the second metal terminal is provided with an elastic seesaw and a connecting port matched with the first metal connecting tongue, the inserting part is inserted into the outer end part of the insulating framework, and the elastic seesaw is inserted into the connecting port and fixed. The end cover electric connecting piece is formed by the first metal terminal and the second metal terminal, the processing is convenient, the assembly is convenient, the first metal terminal is connected with the lead, the second metal terminal is connected with the second end cover, and the connection is reliable.
As a preferable technical means: the first metal terminal is formed by stamping and bending a metal plate, and the wire connecting part is a U-shaped wire welding groove; one end of the first metal terminal is a plug-in part, the other end of the first metal terminal is divided into two pieces, one piece is a connecting tongue, the other piece is bent to form a wire welding groove and an axial positioning surface which can be propped against the end face of the insulating framework, and the outer end of the plug-in part is provided with a guide bevel edge; after the wire is embedded into the wire welding groove, the wire is welded and fixed. The lead welding groove is adopted, the lead connection reliability is high, the axial positioning surface is propped against the end face of the insulating framework and counteracts the elastic seesaw, and the axial positioning surface and the elastic seesaw are tightly propped against the second end cover.
As a preferable technical means: the second metal terminal is formed by stamping and bending a metal plate, is L-shaped and comprises a second end cover connecting part provided with an elastic tilting tongue and a connecting tongue connecting part provided with a connecting port, wherein the second end cover connecting part and the connecting tongue connecting part are vertically arranged, the elastic tilting tongue is formed by stamping and tilting the middle material of the connecting part of the second end cover, and the back surface of the elastic tilting tongue is propped against the inner side surface of the second end cover; the connecting tongue is vertically inserted into the connecting port and welded and fixed, and the width of the connecting part of the second end cover is larger than that of the connecting tongue. The technical scheme has the advantages of simple structure, convenient processing, and reliable operation, and the elastic seesaw and the second metal terminal are of an integrated structure. And the width of the second end cover connecting part is large, the end part of the second end cover connecting part can be propped against the inner side surface of the second end cover, the connection stability is improved, and the inclination of the second end cover connecting part is avoided.
As a preferable technical means: the first end of the lead is welded and fixed with the first end cover, and the lead is axially arranged along the outer side surface of the stator core after being bent by 90 degrees. An insulating sleeve is arranged at the 90-degree bending position of the lead, so that the insulativity is improved.
Another object of the present invention is to provide a plastic package motor adopting a structure for reducing shaft voltage, which comprises a stator assembly, a rotor assembly, a first end cover and a second end cover, wherein the stator assembly comprises a stator core, an insulating framework and a structure for reducing shaft voltage.
The beneficial effects are that: according to the technical scheme, through the structure, the end covers on the two sides are effectively conducted with the stator core to form equipotential, so that the shaft voltage is greatly reduced, the bearing electric corrosion risk is reduced, the service life and reliability of the motor are ensured, and the applicability of the product is wider.
Drawings
Fig. 1 is a schematic diagram of an assembly structure of a motor according to the present invention, in which a part of a molding material, an insulating tape, etc. is removed.
Fig. 2 is a schematic view of another view direction of the motor assembly of the present invention with a portion of the molding material removed.
FIG. 3 is a schematic view of the structure of the present invention and the end cap.
Fig. 4 is a structural view of a first metal terminal according to the present invention.
Fig. 5 is a structural view of a second metal terminal of the present invention.
Fig. 6 is a schematic view of the structure of the electrical end cap connector of the present invention.
In the figure: 1-conducting wires; 2-a first end cap; 3-a second end cap; 4-conductive adhesive tape; 5-insulating tape; 6-a first metal terminal; 601-a wire welding groove; 602-an axial locating surface; 603-connecting tongues; 604-plug-in part; 7-a second metal terminal; 701-resilient tabs; 702—connection port; 703-a second end cap connection; 704-connecting tongue connection; 8-an insulating framework; 9-stator core.
Detailed Description
The technical scheme of the invention is further described in detail below with reference to the attached drawings.
A structure for reducing shaft voltage comprises a lead 1, a stator core electric connector and an end cover electric connector; the first end of the wire 1 is electrically connected with the first end cover 2, the wire 1 is electrically connected with the stator core 9 through the stator core electrical connector, and the second end of the wire 1 is electrically connected with the second end cover 3 through the end cover electrical connector arranged on the insulating framework 8, so that the first end cover 2, the stator core 9 and the second end cover 3 are in an equipotential state. According to the technical scheme, through the structure, the end covers on the two sides are effectively conducted with the stator iron core 9 to form equipotential, so that the shaft voltage is greatly reduced, the bearing electric corrosion risk is reduced, the service life and reliability of the motor are ensured, and the applicability of the product is wider. The assembly structure of the shaft voltage reducing structure in the plastic package motor is shown in fig. 1, 2 and 3.
In order to realize reliable connection between the wire 1 and the stator core 9, one section of the wire 1 is provided with an insulation sleeve, the conductor of the other section of wire 1 is exposed, the part of the wire 1 is axially arranged along the outer periphery of the stator core 9, and the exposed part of the conductor is tightly attached to the outer periphery of the stator core 9 through an electric connector of the stator core. According to the technical scheme, the exposed part of the conductor is electrically connected with the stator core 9, so that the conductor 1 is electrically connected with the stator core 9.
In order to improve the connection reliability, the stator core electrical connector is a conductive adhesive tape 4, and the conductive adhesive tape 4 clings the exposed part of the conductor to the stator core 9. The exposed conductor part of the lead wire 1 is covered and firmly bonded with the outer circle of the stator core 9. The conductive adhesive tape 4 in the technical scheme can be a double-sided conductive adhesive tape 4, such as a double-sided conductive copper foil adhesive tape.
In order to prevent the plastic packaging material from entering between the wire 1 and the conductive adhesive tape 4 and between the wire 1 and the stator core 9 and affecting the conductivity of the wire 1 and the stator core 9, the outside of the conductive adhesive tape 4 is covered with an insulating adhesive tape 5, the width of the insulating adhesive tape 5 is greater than that of the conductive adhesive tape 4, and the width of the insulating adhesive tape 5 is greater than the length of the exposed part of the conductor at the outer periphery side of the stator core 9 so as to cover the exposed part of the conductor. Wrapping the insulating tape 5 around the conductive tape 4 prevents the injection molding material from entering.
As shown in fig. 4, 5 and 6, the end cover electrical connector is provided with a connection part of a wire 1 and an elastic seesaw 701, the elastic seesaw 701 is pressed against the second end cover 3, and the second end of the wire 1 is electrically connected with the end cover electrical connector through the connection part of the wire 1; the end cap electrical connector is electrically connected to the second end cap 3 by means of a resilient tab 701 which abuts against the second end cap 3. The resilient tabs 701 abut the second end cap 3 to achieve a reliable electrical connection.
For convenience in processing, the end cover electric connector comprises a first metal terminal 6 and a second metal terminal 7, the first metal terminal 6 is provided with a connecting part of the lead 1, a connecting tongue 603 and a plug-in part 604, the second metal terminal 7 is provided with an elastic seesaw 701 and a connecting port 702 matched with the first metal connecting tongue 603, the plug-in part 604 is inserted into the outer end part of the insulating framework 8, and the elastic seesaw 701 is inserted into the connecting port 702 and fixed. The end cover electric connector is formed by the first metal terminal 6 and the second metal terminal 7, the processing is convenient, the assembly is convenient, the first metal terminal 6 is connected with the lead 1, the second metal terminal 7 is connected with the second end cover 3, and the connection is reliable.
In order to improve the working reliability, the first metal terminal 6 is formed by stamping and bending a metal plate, and the connecting part of the lead 1 is a U-shaped lead welding groove 601; one end of the first metal terminal 6 is a plug-in part 604, the other end is divided into two pieces, one piece is a connecting tongue 603, the other piece is bent to form a wire welding groove 601 and an axial positioning surface 602 which can be abutted against the end surface of the insulating framework 8, and the outer end of the plug-in part 604 is provided with a guide bevel edge; after the wire 1 is embedded into the wire welding groove 601, the wire is welded and fixed. By adopting the wire welding groove 601, the connection reliability of the wire 1 is high, and the axial positioning surface 602 abuts against the end face of the insulating framework 8 and counteracts the elastic seesaw 701, and the wire is tightly abutted against the second end cover 3 with the elastic seesaw 701.
The second metal terminal 7 is formed by stamping and bending a metal plate, the second metal terminal 7 is L-shaped and comprises a second end cover connecting part 703 provided with an elastic tilting tongue 701 and a connecting tongue connecting part 704 provided with a connecting port 702, the second end cover connecting part 703 and the connecting tongue connecting part 704 are vertically arranged, the elastic tilting tongue 701 is formed by stamping and tilting the middle material of the second end cover connecting part 703, and the back surface of the elastic tilting tongue 701 is propped against the inner side surface of the second end cover 3; the connecting tongue 603 is vertically inserted into the connecting opening 702 and welded and fixed, and the width of the second end cover connecting portion 703 is larger than that of the connecting tongue connecting portion 704. The technical scheme has simple structure and convenient processing, and the elastic seesaw 701 and the second metal terminal 7 are of an integrated structure, thereby having reliable operation. And the width of the second end cover connecting part 703 is large, the end part of the second end cover connecting part 703 can be propped against the inner side surface of the second end cover 3, so that the stability of connection is improved, and the inclination of the second end cover connecting part 703 is avoided.
In order to improve the working reliability and the supporting force, the situations of wire 1 displacement, off-welding and the like caused in the injection molding process are prevented. The first end of the lead 1 is welded and fixed with the first end cover 2, and the lead is axially arranged along the outer side surface of the stator core 9 after 190-degree bending. An insulating sleeve is arranged at the 190-degree bending position of the lead, so that the insulativity is improved.
Another object of the present invention is to provide a plastic package motor adopting the structure of reducing shaft voltage, as shown in fig. 1 and 2, the plastic package motor adopting the structure of reducing shaft voltage comprises a wire 1, a stator core 9 with windings, an insulating framework 8, a double-sided conductive copper foil tape, an insulating tape 5 wrapping the stator core 9, a second end cover 3 assembled by the whole machine, and the like, wherein the wire is connected with a first end cover 2, a first metal terminal 6, a second metal terminal 7. The method comprises the steps of firstly conducting one end of a wire 1 with a first end cover 2 by spot welding or riveting after insulation skin is stripped, conducting the other end of the wire 1 with a first metal terminal 6 by welding or riveting after insulation skin is stripped by 10-30mm (smaller than the height of a stator core 9), inserting the first metal terminal 6 into a square hole of an insulation framework 8 of a winding stator core 9 for fixing, covering and firmly bonding a part of a bare wire core part of the wire 1 with the outer circle of the stator core 9 by using a section of double-sided conductive copper foil tape (or other conductive adhesive tape 4), then winding an insulating single-sided adhesive tape on the outside to prevent injection molding plastic sealing materials from entering, forming the winding stator core 9 with the first end cover 2, injecting the winding stator core 9 into a plastic sealing stator, exposing a part of a connecting tongue 603 of the first metal terminal 6, welding a hole of a second metal terminal 7 with the exposed tongue part of the first metal terminal 6, loading the parts such as a rotor and the like into the second end cover 3, pressing the second end cover 3 into contact with the elastic tilting tongue 701 of the second metal terminal 7 for conducting, and forming a plastic sealing EC (BLDC) motor.
The shaft voltage reducing structure and the plastic package motor adopting the shaft voltage reducing structure shown in the above fig. 1-6 are specific embodiments of the present invention, have already shown the prominent substantial characteristics and significant progress of the present invention, and can be modified in terms of shape, structure, etc. according to practical use requirements, under the teaching of the present invention, all of which are within the scope of protection of the present invention.
Claims (7)
1. A reduced shaft voltage structure, characterized by: comprises a wire (1), a stator iron core electric connector and an end cover electric connector; the first end of the wire (1) is electrically connected with the first end cover (2), the wire (1) enables the wire (1) to be electrically connected with the stator core (9) through the stator core electrical connector, and the second end of the wire (1) is electrically connected with the second end cover (3) through the end cover electrical connector arranged on the insulating framework (8), so that the first end cover (2), the stator core (9) and the second end cover (3) are in an equipotential state;
the end cover electric connector is provided with a wire connecting part and an elastic seesaw (701), the end cover electric connector comprises a first metal terminal (6) and a second metal terminal (7), the first metal terminal (6) is provided with the wire connecting part, the connecting seesaw (603) and an inserting part (604), the second metal terminal (7) is provided with the elastic seesaw (701) and a connecting port (702) matched with the first metal connecting seesaw (603), the inserting part (604) is inserted into the outer end part of the insulating framework (8), and the elastic seesaw (701) is inserted into the connecting port (702) and fixed;
the first metal terminal (6) is formed by stamping and bending a metal plate, and the wire connecting part is a U-shaped wire welding groove (601); one end of the first metal terminal (6) is a plug-in part (604), the other end is divided into two pieces, one piece is a connecting tongue (603), the other piece is bent to form a wire welding groove (601) and an axial positioning surface (602) which can be abutted against the end surface of the insulating framework (8), and the outer end of the plug-in part (604) is provided with a guide bevel edge; after the wire (1) is embedded into the wire welding groove (601), the wire is welded and fixed;
the second metal terminal (7) is formed by stamping and bending a metal plate, the second metal terminal (7) is L-shaped and comprises a second end cover connecting part (703) provided with an elastic tilting tongue (701) and a connecting tongue connecting part (704) provided with a connecting port (702), the second end cover connecting part (703) and the connecting tongue connecting part (704) are vertically arranged, the elastic tilting tongue (701) is formed by stamping and tilting the middle material of the second end cover connecting part (703), and the back surface of the elastic tilting tongue (701) is propped against the inner side surface of the second end cover (3); the connecting tongue (603) is vertically inserted into the connecting port (702) and welded and fixed, and the width of the second end cover connecting part (703) is larger than that of the connecting tongue connecting part (704); an insulating sleeve is arranged at the 90-degree bending position of the lead (1).
2. A reduced shaft voltage structure according to claim 1, wherein: one section of the wire (1) is provided with an insulating sleeve, the conductor of the other section of the wire (1) is exposed, the wire (1) is partially axially arranged along the outer periphery of the stator core (9), and the exposed conductor is tightly attached to the outer periphery of the stator core (9) through an electric connector of the stator core.
3. A reduced shaft voltage structure according to claim 2, wherein: the stator core electric connector is a conductive adhesive tape (4), and the conductive adhesive tape (4) clings the exposed part of the conductor to the stator core (9).
4. A reduced shaft voltage structure according to claim 3, wherein: the outside of conductive tape (4) wrap insulating tape (5), the width of insulating tape (5) is greater than conductive tape (4) width, and the width of insulating tape (5) is greater than the length that is located stator core (9) periphery side conductor exposed part in order to cover conductor exposed part.
5. A reduced shaft voltage structure according to claim 1, wherein: the elastic seesaw (701) is propped against the second end cover (3), and the second end of the lead (1) is electrically connected with an end cover electric connecting piece through a lead connecting part; the end cover electric connector is electrically connected with the second end cover (3) through an elastic seesaw (701) pressed against the second end cover (3).
6. A reduced shaft voltage structure according to claim 1, wherein: the first end of the lead (1) is welded and fixed with the first end cover (2), and the lead (1) is axially arranged along the outer side surface of the stator core (9) after being bent by 90 degrees.
7. The plastic package motor adopting the shaft voltage reducing structure comprises a stator assembly, a rotor assembly, a first end cover (2) and a second end cover (3), wherein the stator assembly comprises a stator core (9) and an insulating framework (8); the method is characterized in that: further comprising a structure for reducing shaft voltage according to any of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811021220.7A CN108964335B (en) | 2018-09-03 | 2018-09-03 | Structure for reducing shaft voltage and plastic package motor adopting structure for reducing shaft voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811021220.7A CN108964335B (en) | 2018-09-03 | 2018-09-03 | Structure for reducing shaft voltage and plastic package motor adopting structure for reducing shaft voltage |
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| Publication Number | Publication Date |
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| CN108964335A CN108964335A (en) | 2018-12-07 |
| CN108964335B true CN108964335B (en) | 2023-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811021220.7A Active CN108964335B (en) | 2018-09-03 | 2018-09-03 | Structure for reducing shaft voltage and plastic package motor adopting structure for reducing shaft voltage |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110112854A (en) * | 2019-05-13 | 2019-08-09 | 卧龙电气驱动集团股份有限公司 | A kind of structure of the anti-ponding corrosion of plastic-sealing brushless DC motor rear end cap |
| CN113452187B (en) * | 2019-07-26 | 2022-05-31 | 广东威灵电机制造有限公司 | Brushless motor and electrical equipment |
| CN112311128B (en) * | 2019-07-26 | 2021-11-30 | 广东威灵电机制造有限公司 | Brushless motor and electrical equipment |
| CN110601454A (en) * | 2019-09-25 | 2019-12-20 | 卧龙电气驱动集团股份有限公司 | Structure for reducing voltage of driving type plastic package motor shaft of PWM inverter |
| WO2022067696A1 (en) * | 2020-09-30 | 2022-04-07 | 卧龙电气驱动集团股份有限公司 | Structure for reducing shaft voltage of pwm inverter driven plastic-packaged motor |
| CN113794305A (en) * | 2021-09-27 | 2021-12-14 | 珠海格力电器股份有限公司 | Wiring subassembly, plastic-coated framework and motor |
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| JP2007159302A (en) * | 2005-12-07 | 2007-06-21 | Matsushita Electric Ind Co Ltd | Brushless motor |
| CN202334156U (en) * | 2011-09-30 | 2012-07-11 | 卧龙电气集团股份有限公司 | Electric-corrosion-prevention motor |
| CN104467295A (en) * | 2014-11-21 | 2015-03-25 | 广东威灵电机制造有限公司 | Bearing electro-corrosion preventing structure of motor and brushless direct-current motor |
| CN207117348U (en) * | 2017-09-19 | 2018-03-16 | 浙江联宜电机有限公司 | Plastic packaging motor with anti-electrocorrosion structure |
| CN208638166U (en) * | 2018-09-03 | 2019-03-22 | 卧龙电气集团股份有限公司 | It is a kind of to reduce shaft voltage structure and using the plastic packaging motor for reducing shaft voltage structure |
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2018
- 2018-09-03 CN CN201811021220.7A patent/CN108964335B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007159302A (en) * | 2005-12-07 | 2007-06-21 | Matsushita Electric Ind Co Ltd | Brushless motor |
| CN202334156U (en) * | 2011-09-30 | 2012-07-11 | 卧龙电气集团股份有限公司 | Electric-corrosion-prevention motor |
| CN104467295A (en) * | 2014-11-21 | 2015-03-25 | 广东威灵电机制造有限公司 | Bearing electro-corrosion preventing structure of motor and brushless direct-current motor |
| CN207117348U (en) * | 2017-09-19 | 2018-03-16 | 浙江联宜电机有限公司 | Plastic packaging motor with anti-electrocorrosion structure |
| CN208638166U (en) * | 2018-09-03 | 2019-03-22 | 卧龙电气集团股份有限公司 | It is a kind of to reduce shaft voltage structure and using the plastic packaging motor for reducing shaft voltage structure |
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| Publication number | Publication date |
|---|---|
| CN108964335A (en) | 2018-12-07 |
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