CN108880015B - High-density winding punching sheet - Google Patents
High-density winding punching sheet Download PDFInfo
- Publication number
- CN108880015B CN108880015B CN201810695559.9A CN201810695559A CN108880015B CN 108880015 B CN108880015 B CN 108880015B CN 201810695559 A CN201810695559 A CN 201810695559A CN 108880015 B CN108880015 B CN 108880015B
- Authority
- CN
- China
- Prior art keywords
- winding
- density
- yoke portion
- thermal expansion
- tooth portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004804 winding Methods 0.000 title claims abstract description 82
- 238000004080 punching Methods 0.000 title claims abstract description 13
- 230000007704 transition Effects 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 claims description 2
- 239000002966 varnish Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 238000009413 insulation Methods 0.000 description 7
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
High-density winding punching sheet relates to a motor component, including yoke portion, yoke portion include interior circle, interior even circumference is provided with a plurality of tooth portion on the circle, yoke portion still is provided with winding entrance hole and winding wire hole, all is provided with the connection in winding entrance hole and the winding wire hole the preceding link and the back link of winding, preceding link with the back link between connect through conductive buckle, be provided with thermodetector in the tooth portion, all still be provided with in winding entrance hole and the winding wire hole and let the insulating wedge of conductive buckle switching by thermodetector control. Be provided with winding power-off device in this towards piece, can be when the winding is overheated automatic cutout winding power, thereby prevent because the winding is overheated to the damage that the motor caused, can the automatic connection power after the temperature drops to reasonable interval, guarantee the normal use of motor.
Description
Technical Field
The invention relates to a motor component, in particular to a stator punching sheet.
Background
The motor can produce a large amount of heat in the operation, for this reason all can design wind-guiding structure in the stator of motor and rotor, let the inside heat of outside air with the motor take away through the kinetic energy that the motor produced in the operation, let the winding can both keep normal temperature at the during operation, guarantee the motor normal operating. However, once the motor is short-circuited or overloaded, the temperature of the winding will rise sharply, which will cause great influence on the operation of the motor, and in severe cases, the winding will be blown or the motor will explode.
Disclosure of Invention
The invention provides a high-density winding punching sheet aiming at the defects in the prior art, a winding power-off device is arranged in the punching sheet, a winding power supply can be automatically cut off when a winding is overheated, the damage to a motor caused by the overheating of the winding is prevented, the power supply can be automatically connected after the temperature is reduced to a reasonable interval, and the normal use of the motor is ensured.
In order to solve the technical problem, the invention is solved by the following technical scheme: high density winding punching sheet, including yoke portion, yoke portion include interior circle, interior circle on even circumference be provided with a plurality of tooth portion, yoke portion still be provided with winding entrance hole and winding wire hole, winding entrance hole and winding wire hole in all be provided with the connection the preceding link and the back link of winding, preceding link with the back link between connect through conductive buckle, tooth portion in be provided with thermodetector, winding entrance hole and winding wire hole in all still be provided with by thermodetector control lets the insulating wedge of conductive buckle switching.
In the above technical solution, preferably, an arc transition is provided between adjacent teeth.
In the above technical solution, preferably, the yoke and the tooth surface are coated with an insulating varnish.
In the above technical solution, preferably, the top of the tooth portion is provided with a stopper.
In the above technical solution, preferably, the tooth portion is provided with heat dissipation holes.
In the above technical solution, preferably, the bottom of the insulating wedge is provided with a stepping motor, the insulating wedge is provided with a return spring, and the insulating wedge has a tip.
In the above technical solution, preferably, the temperature detector is a thermal expansion sheet, the rear connection end and the thermal expansion sheet are connected with a first lead, the first lead is provided with a transformer, the thermal expansion sheet and the stepping motor are connected with a second lead, and when the thermal expansion sheet expands due to heat, the first lead and the second lead are conducted.
In the above technical solution, preferably, the yoke portion is provided with a winding entering slot and a winding leaving slot corresponding to the tooth portion, and the winding entering slot and the winding leaving slot are further provided with anti-falling pieces respectively.
For a large-sized motor, the stator inside is huge, and the winding density wound on the stator is also very high. The passing current of the high-density winding during operation is very high, the winding is rapidly heated once an accident occurs, and the winding can be overloaded to cause a serious accident if the power is not cut off immediately. Therefore, the invention is a device for quickly cutting off the power supply after the winding is rapidly heated. Compared with the existing power-off device, the power-off device is arranged in the stator, so that the complexity of the whole power-off device is reduced, and the extra occupied space is avoided. According to the invention, the power supply of the insulation wedge is conducted through the thermal expansion sheet, once the winding is heated, the thermal expansion sheet expands to conduct the conducting wire, the insulation wedge is separated from the front connecting end and the rear connecting end to cause the power failure of the winding, the winding can be gradually cooled after the power failure, once the temperature is reduced to a reasonable temperature, the thermal expansion sheet can break the insulation wedge, the insulation wedge is separated from the front connecting end and the rear connecting end under the action of the return spring, and the front connecting end and the rear connecting end are jointed again. The power-off setting of the invention is quick in response, manual intervention is not needed, the power-off can be carried out before the winding is in an irreversible state, and meanwhile, the winding can automatically and quickly obtain power again after the winding is in a normal temperature, and the normal work of the motor is not influenced.
Compared with the prior art, the invention has the beneficial effects that: be provided with winding power-off device in this towards piece, can be when the winding is overheated automatic cutout winding power, thereby prevent because the winding is overheated to the damage that the motor caused, can the automatic connection power after the temperature drops to reasonable interval, guarantee the normal use of motor.
Drawings
FIG. 1 is a schematic of the present invention.
FIG. 2 is a schematic enlarged view of a portion of FIG. 1-A of the present invention.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments.
Example 1: as shown in fig. 1 to 2, the high-density winding punching sheet comprises a yoke portion 1, wherein the yoke portion 1 comprises an inner circle, a plurality of tooth portions 2 are uniformly arranged on the inner circle in a circumferential mode, and arc transition is formed between every two adjacent tooth portions 2. The top of the tooth part 2 is provided with a blocking block 21, and the tooth part 2 is provided with a heat radiation hole 22. The surfaces of the yoke part 1 and the tooth part 2 are coated with insulating paint. The yoke part 1 is provided with a winding entering slot 23 and a winding leaving slot 24 corresponding to the tooth part 2, and the winding entering slot 23 and the winding leaving slot 24 are respectively provided with an anti-falling piece 25. The yoke part 1 is further provided with a winding wire inlet hole 3 and a winding wire outlet hole 4, a front connecting end 51 and a rear connecting end 52 for connecting windings are arranged in the winding wire inlet hole 3 and the winding wire outlet hole 4, the front connecting end 51 and the rear connecting end 52 are connected through a conductive buckle 53, and a spring 54 is arranged on the conductive buckle 53. A temperature detector is arranged in the tooth part 2, and an insulating wedge 8 which is controlled by the temperature detector to open and close the conductive buckle 53 is also arranged in the winding wire inlet hole 3 and the winding wire outlet hole 4. The bottom of the insulation wedge 8 is provided with a stepping motor 81, the insulation wedge 81 is provided with a return spring 82, and the insulation wedge 8 is provided with a tip. The temperature detector is a thermal expansion sheet 7, an A lead wire 71 is connected between the rear connecting end 52 and the thermal expansion sheet 7, a transformer 73 is arranged on the A lead wire 71, the thermal expansion sheet 7 and the stepping motor 81 are connected with an B lead wire 72, and when the thermal expansion sheet 7 expands due to heat, the A lead wire 71 and the B lead wire 72 are conducted.
According to the invention, the power supply of the insulating wedge 8 is conducted through the thermal expansion sheet 7, once the winding is heated, the thermal expansion sheet 7 expands to conduct the A lead 71 and the B lead 72, so that the stepping motor 81 is driven to operate to separate the front connecting end 51 from the rear connecting end 52 through the insulating wedge 8. The winding is powered off after the front connecting end 51 and the rear connecting end 52 are separated, the winding is gradually cooled after being powered off, once the temperature is reduced to a reasonable temperature, the first conducting wire 71 and the second conducting wire 72 are powered off by the thermal expansion sheet 7, at the moment, the stepping motor 81 is powered off, the insulating wedge 8 is far away from the front connecting end 51 and the rear connecting end 52 under the action of the return spring 82, and the front connecting end 51 and the rear connecting end 52 are jointed again under the action of the spring 54.
Claims (7)
1. High density winding punching sheet, including yoke portion, yoke portion include interior circle, interior circle on even circumference be provided with a plurality of tooth portion, characterized in that, yoke portion still be provided with winding entrance hole and winding wire hole, winding entrance hole and winding wire hole in all be provided with the connection the preceding link and the back link of winding, preceding link with the back link between connect through conductive buckle, the tooth portion in be provided with temperature detector, winding entrance hole and winding wire hole in all still be provided with by temperature detector control lets the insulating wedge of conductive buckle switching, insulating wedge bottom be provided with step motor, be provided with the answer spring on the insulating wedge, insulating wedge have most advanced.
2. The high-density winding punch as recited in claim 1, wherein adjacent teeth have circular arc transitions therebetween.
3. The high-density winding punch as recited in claim 1, wherein the yoke portion and the tooth portion are coated with an insulating varnish.
4. The high-density winding punching sheet as claimed in claim 1, wherein the top of the tooth portion is provided with a stop block.
5. The high-density winding punching sheet as claimed in claim 1, wherein the teeth are provided with heat dissipation holes.
6. The high-density winding punching sheet according to claim 1, wherein the temperature detector is a thermal expansion sheet, a first conducting wire is connected between the rear connecting end and the thermal expansion sheet, a transformer is arranged on the first conducting wire, a second conducting wire is connected between the thermal expansion sheet and the stepping motor, and the first conducting wire and the second conducting wire are conducted after the thermal expansion sheet expands due to heating.
7. The high-density winding punching sheet according to claim 1, wherein the yoke portion is provided with a winding entering slot and a winding leaving slot corresponding to the tooth portion, and the winding entering slot and the winding leaving slot are respectively provided with a separation preventing sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810695559.9A CN108880015B (en) | 2018-06-29 | 2018-06-29 | High-density winding punching sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810695559.9A CN108880015B (en) | 2018-06-29 | 2018-06-29 | High-density winding punching sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108880015A CN108880015A (en) | 2018-11-23 |
| CN108880015B true CN108880015B (en) | 2019-12-24 |
Family
ID=64297020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810695559.9A Active CN108880015B (en) | 2018-06-29 | 2018-06-29 | High-density winding punching sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108880015B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203242568U (en) * | 2013-05-18 | 2013-10-16 | 浙江工贸职业技术学院 | Overheat limiter |
| CN104682631A (en) * | 2015-03-18 | 2015-06-03 | 佛山市威灵洗涤电机制造有限公司 | Variable frequency integrated motor and washing machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4252360B2 (en) * | 2003-05-21 | 2009-04-08 | 三菱電機株式会社 | Rotating electric machine stator |
| CN103280377B (en) * | 2013-05-20 | 2015-01-21 | 东南大学 | Micromechanical switch-based temperature protection device |
-
2018
- 2018-06-29 CN CN201810695559.9A patent/CN108880015B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203242568U (en) * | 2013-05-18 | 2013-10-16 | 浙江工贸职业技术学院 | Overheat limiter |
| CN104682631A (en) * | 2015-03-18 | 2015-06-03 | 佛山市威灵洗涤电机制造有限公司 | Variable frequency integrated motor and washing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108880015A (en) | 2018-11-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20191129 Address after: 523000 Guangdong Province, Dongguan city Liaobu town Hengkeng Village Cross Star Road Applicant after: DONGGUAN SWITCHGEAR INDUSTRIAL CO.,LTD. Applicant after: Dongguan Power Supply Bureau of Guangdong Power Grid Co., Ltd Address before: 315020, No. 105, Renmin Road, middle Horse Street, Jiangbei District, Zhejiang, Ningbo (2-28) Applicant before: NINGBO JIANGBEI SIDONG INDUSTRIAL DESIGN CO.,LTD. |
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| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |