CN110429766B - Motor grounding structure and motor - Google Patents
Motor grounding structure and motor Download PDFInfo
- Publication number
- CN110429766B CN110429766B CN201910786289.7A CN201910786289A CN110429766B CN 110429766 B CN110429766 B CN 110429766B CN 201910786289 A CN201910786289 A CN 201910786289A CN 110429766 B CN110429766 B CN 110429766B
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- Prior art keywords
- pad
- circuit board
- motor
- grounding structure
- housing
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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
- H02K11/40—Structural association with grounding devices
Abstract
The invention provides a motor grounding structure and a motor, wherein the grounding structure comprises: a housing, and a circuit board mounted within the housing; the circuit board at least partially penetrates out of the shell; the circuit board is provided with a first bonding pad, the first bonding pad is arranged at the staggered position of the circuit board and the shell, the first bonding pad is connected with the shell, and the shell is grounded through the first bonding pad. The motor grounding structure solves the grounding problem of the metal shell of the motor, the shell is grounded through the circuit board, the grounding performance is better, the ground wire is directly connected to the circuit board, the connection is convenient, and the cost of the shell is saved. The motor production process is simplified, and the production efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to a motor grounding structure and a motor.
Background
The shell of the motor is metal, U, V, W is generally electrified with 220V or 380V strong electricity, and if the strong electricity leaks to the metal shell of the motor, a person touches the shell to get an electric shock, so that personal injury is caused. Therefore, the housing needs to be grounded.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is that the motor has potential safety hazard of strong current leaking to the metal shell, so that the invention provides a motor grounding structure and a motor.
In order to solve the above problems, the present invention provides a motor grounding structure, including:
a housing, and a circuit board mounted within the housing;
the circuit board at least partially penetrates out of the shell;
the circuit board is provided with a first bonding pad, the first bonding pad is arranged at the staggered position of the circuit board and the shell, the first bonding pad is connected with the shell, and the shell is grounded through the first bonding pad.
Preferably, a notch is formed in the peripheral wall of the casing, the circuit board comprises a protruding portion, and the protruding portion penetrates out of the casing through the notch.
Preferably, the first pad is U-shaped, the opening of the first pad faces the casing, the edge of the notch is wrapped by the first pad, and the casing is in contact conduction with the first pad.
Preferably, the circuit board is further provided with a second bonding pad, the second bonding pad is connected with a ground wire, and the first bonding pad is conducted with the second bonding pad through a printed wiring.
Preferably, the circuit board is further provided with a third bonding pad, the third bonding pad is connected with the U-phase line, and/or the circuit board is further provided with a fourth bonding pad, the fourth bonding pad is connected with the V-phase line, and/or the circuit board is further provided with a fifth bonding pad, and the fifth bonding pad is connected with the W-phase line.
Preferably, a sixth bonding pad is further arranged on the circuit board, the sixth bonding pad is arranged on the circuit board located inside the casing, the sixth bonding pad is conducted with the second bonding pad through printed wiring, and the sixth bonding pad is connected with a stator core of the motor.
Preferably, the sixth pad is provided with a pin, and the tail end of the pin is connected with the stator core of the motor.
Preferably, the circuit board is further provided with a plurality of winding bonding pads, each of the plurality of winding bonding pads is conducted to the third bonding pad, the fourth bonding pad or the fifth bonding pad through a printed wiring, and the stator winding of the motor is correspondingly connected with the winding bonding pads.
Preferably, the circuit board further comprises an annular part, the annular part is arranged in the casing, and the annular part corresponds to the stator of the motor; a plurality of winding pads are arranged on the annular part at intervals.
A motor adopts foretell motor ground structure.
The motor grounding structure and the motor provided by the invention at least have the following beneficial effects:
the motor grounding structure solves the grounding problem of the metal shell of the motor, the shell is grounded through the circuit board, the grounding performance is better, the ground wire is directly connected to the circuit board, the connection is convenient, and the cost of the shell is saved. The motor production process is simplified, and the production efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of a motor grounding structure according to an embodiment of the present invention;
FIG. 2 is a schematic view of an assembly of a housing and a circuit board according to an embodiment of the invention;
FIG. 3 is a schematic diagram of a circuit board wiring according to an embodiment of the present invention;
fig. 4 is a schematic view of the installation of the pin member according to the embodiment of the present invention.
The reference numerals are represented as:
1. a housing; 2. a circuit board; 3. a first pad; 4. a notch; 5. a projection; 6. a second pad; 7. a third pad; 8. a fourth pad; 9. a fifth pad; 10. a sixth pad; 11. a pin member; 12. a stator core; 13. a winding pad; 14. a stator winding; 15. an annular portion; 16. a ground wire; 17. a U-phase line; 18. a V-phase line; 19. and W phase lines.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 4, a grounding structure of a motor includes a housing 1, and a circuit board 2 mounted in the housing 1, specifically, mounted on a motor frame; the circuit board 2 at least partially penetrates out of the shell 1; the circuit board 2 is provided with a first bonding pad 3, the first bonding pad 3 is arranged at the staggered position of the circuit board 2 and the casing 1, the first bonding pad 3 is connected with the casing 1, and the casing 1 is grounded through the first bonding pad 3.
The motor grounding structure of this embodiment has solved among the motor the problem that the metal casing was leaked to the high voltage electricity, probably caused personnel to electrocute, sets up the pad at the side position of casing 1 and the crisscross contact of circuit board 2, need not set up extra conductor and connect, and the pad is walked line rethread ground wire ground connection through the printing on the circuit board 2, reaches the purpose of casing 1 ground connection anticreep. Compared with the design that the ground wire is directly pressed on the outer surface of the shell through the screw in the prior art, the motor structure of the embodiment also has the advantage of small occupied area, and is favorable for miniaturization of the motor outlet box. The casing does not need to be drilled, and the casing can be thinner, so that the material cost of the motor can be effectively reduced. The casing passes through circuit board ground connection, can effectively save the technology degree of difficulty of motor, improves production efficiency. The reliability of the grounding of the bonding pad is higher than that of the screw line pressing mode.
In this embodiment, breach 4 has been seted up to the perisporium of casing 1, and circuit board 2 includes bulge 5, and bulge 5 wears out to the casing 1 outside through breach 4, and first pad 3 is the U-shaped, and the opening of first pad 3 is towards casing 1, and the edge of breach 4 is wrapped up by first pad 3, and casing 1 switches on with the contact of first pad 3. The U-shaped bonding pad is matched with the shell 1, and after the circuit board 2 is installed on the shell 1, the first bonding pad 3 is naturally contacted and conducted with the shell, secondary process treatment is not needed, and the process flow is saved. The housing 1, which is in contact with the U-shaped first pad 3, may be an edge naturally formed by the notch 4 or may be a specially prepared protrusion. The U-shaped first pad 3 may be designed to be in contact with the edge of one side of the notch 4, or may be designed to be in contact with the edges of both sides of the notch 4.
In this embodiment, in a three-phase motor, a cable externally connected to the motor is a three-phase power line, and includes a U-phase line 17, a V-phase line 18, a W-phase line 19, and a ground line 16, a second pad 6 is further disposed on the protruding portion 5 of the circuit board 2, the second pad 6 is connected to the ground line 16, the first pad 3 and the second pad 6 are connected through a printed trace, and the casing 1 is connected to the ground line 16. The convex part 5 of the circuit board 2 is also provided with a third pad 7, the third pad 7 is connected with a U-phase line 17, and/or the circuit board 2 is also provided with a fourth pad 8, the fourth pad 8 is connected with a V-phase line 18, and/or the circuit board 2 is also provided with a fifth pad 9, and the fifth pad 9 is connected with a W-phase line 19.
The three-phase power line is connected with the motor through the bulge part 5 which bulges out of the outer side of the machine shell 1, the wiring is convenient, the ground wire 16 does not need to be connected independently, the wiring mode is uniform, and the process flow is simplified.
In this embodiment, the circuit board 2 is further provided with a sixth pad 10, the sixth pad 10 is disposed on the circuit board 2 located inside the housing 1, the sixth pad 10 is electrically connected to the second pad 6 through a printed trace, the sixth pad 10 is provided with a pin 11, and the end of the pin 11 is connected to a stator core 12 of the motor. The stator core 12 is well conducted with the sixth land 10 on the circuit board 2 by the pin members 11. The sixth pad 10 and the second pad 6 are conductive inside the circuit board. Therefore, the ground wire 16 is well conducted with the stator core 12, and the stator core 12 is well contacted with the inner wall of the casing 1, so that the purpose of grounding the casing can be achieved.
In this embodiment, the circuit board 2 is further provided with a plurality of winding pads 13, each of the plurality of winding pads 13 is conducted to the third pad 7, the fourth pad 8, or the fifth pad 9 through a printed trace, the stator winding 14 of the motor is correspondingly connected to the winding pads 13, ends of copper wires of the stator winding 14 are sequentially welded to the winding pads 13 of the circuit board 2 according to a fixed sequence, and a specific winding loop is formed with the circuit board 2.
In this embodiment, the circuit board 2 further includes an annular portion 15, the annular portion 15 is disposed in the casing 1, and the annular portion 15 corresponds to a stator of the motor; the plurality of winding pads 13 are provided at intervals on the annular portion 15. More than one sixth bonding pad 10 and pin 11 can be disposed on the annular portion 15 to ensure good conduction between the stator core 12 and the circuit board 2.
The motor grounding structure of this embodiment has solved motor metal casing ground connection problem, and the casing passes through circuit board ground connection, and the ground connection performance is better, and the ground wire lug connection is connected on the circuit board, connects conveniently, saves the casing cost. The motor production process is simplified, and the production efficiency is improved.
A motor adopts foretell motor ground structure.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.
Claims (10)
1. An electric machine grounding structure, comprising:
a housing (1), and a circuit board (2) assembled in the housing (1);
the circuit board (2) at least partially penetrates out of the shell (1);
be equipped with first pad (3) on circuit board (2), first pad (3) set up circuit board (2) with the crisscross position of casing (1), first pad (3) with casing (1) are connected, casing (1) are passed through first pad (3) ground connection.
2. The motor grounding structure according to claim 1, characterized in that a gap (4) is opened on the peripheral wall of the housing (1), the circuit board (2) comprises a protrusion (5), and the protrusion (5) penetrates out of the housing (1) through the gap (4).
3. The electrical machine grounding structure of claim 2, characterized in that the first pad (3) is U-shaped, the opening of the first pad (3) faces the housing (1), the edge of the gap (4) is wrapped by the first pad (3), and the housing (1) is in contact conduction with the first pad (3).
4. The motor grounding structure according to claim 1, wherein a second pad (6) is further disposed on the circuit board (2), the second pad (6) is connected to a ground line (16), and the first pad (3) and the second pad (6) are conducted by a printed trace.
5. The motor grounding structure according to claim 1, characterized in that the circuit board (2) is further provided with a third bonding pad (7), the third bonding pad (7) is connected with a U-phase line (17), and/or the circuit board (2) is further provided with a fourth bonding pad (8), the fourth bonding pad (8) is connected with a V-phase line (18), and/or the circuit board (2) is further provided with a fifth bonding pad (9), and the fifth bonding pad (9) is connected with a W-phase line (19).
6. The motor grounding structure according to claim 4, characterized in that a sixth pad (10) is further disposed on the circuit board (2), the sixth pad (10) is disposed on the circuit board (2) inside the housing (1), the sixth pad (10) and the second pad (6) are conducted through a printed trace, and the sixth pad (10) is connected to a stator core (12) of the motor.
7. The electrical machine grounding structure according to claim 6, characterized in that the sixth land (10) is provided with a pin (11), the pin (11) ending in a stator core (12) of the electrical machine.
8. The motor grounding structure according to claim 5, wherein a plurality of winding pads (13) are further disposed on the circuit board (2), each of the plurality of winding pads (13) is conducted to the third pad (7), or the fourth pad (8), or the fifth pad (9) through a printed trace, and the stator winding (14) of the motor is correspondingly connected to the winding pad (13).
9. The electrical machine grounding structure according to claim 8, characterized in that the circuit board (2) further comprises an annular portion (15), the annular portion (15) being arranged inside the casing (1), the annular portion (15) corresponding to a stator of the electrical machine; the plurality of winding pads (13) are provided at intervals on the annular portion (15).
10. An electrical machine, characterized in that an electrical machine earthing structure according to any one of claims 1-9 is employed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910786289.7A CN110429766B (en) | 2019-08-23 | 2019-08-23 | Motor grounding structure and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910786289.7A CN110429766B (en) | 2019-08-23 | 2019-08-23 | Motor grounding structure and motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110429766A CN110429766A (en) | 2019-11-08 |
| CN110429766B true CN110429766B (en) | 2020-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910786289.7A Active CN110429766B (en) | 2019-08-23 | 2019-08-23 | Motor grounding structure and motor |
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| Country | Link |
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| CN (1) | CN110429766B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57116569A (en) * | 1981-01-08 | 1982-07-20 | Nippon Denso Co Ltd | Voltage regulator |
| JPH08317604A (en) * | 1995-05-19 | 1996-11-29 | Shibaura Eng Works Co Ltd | Electric motor |
| FR3067211B1 (en) * | 2017-06-01 | 2019-06-28 | Aptiv Technologies Limited | ELECTRONIC HOUSING ASSEMBLY, ELECTRICAL CONNECTION AND METHOD OF ASSEMBLY. |
| CN208015542U (en) * | 2018-01-22 | 2018-10-26 | 珠海凯邦电机制造有限公司 | Circuit board assemblies, stator and motor |
| CN207896768U (en) * | 2018-03-09 | 2018-09-21 | 中山市湘安电机电器有限公司 | A kind of earth protective device of permanent magnet DC motor |
| CN208489772U (en) * | 2018-08-16 | 2019-02-12 | 江苏曼淇威电气产品有限公司 | A kind of plastic packaging motor |
| CN109005638B (en) * | 2018-09-07 | 2024-04-05 | 英迪迈智能驱动技术无锡股份有限公司 | PCB layout structure for cylindrical motor |
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2019
- 2019-08-23 CN CN201910786289.7A patent/CN110429766B/en active Active
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| CN110429766A (en) | 2019-11-08 |
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