CN211017681U - Hook-type commutator - Google Patents
Hook-type commutator Download PDFInfo
- Publication number
- CN211017681U CN211017681U CN201922197688.8U CN201922197688U CN211017681U CN 211017681 U CN211017681 U CN 211017681U CN 201922197688 U CN201922197688 U CN 201922197688U CN 211017681 U CN211017681 U CN 211017681U
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- CN
- China
- Prior art keywords
- commutator
- bakelite powder
- copper sheet
- switching
- over copper
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- 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.)
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Abstract
The utility model discloses a hook-type commutator, by integrative pressure injection molding's bakelite powder base member with make the switching-over copper sheet that the circumference was arranged at the excircle of bakelite powder base member and constitute, carry out the intertone through the dead slot between the adjacent switching-over copper sheet and insulate, the top of switching-over copper sheet is equipped with bonding wire crotch, its characterized in that: the insulation groove is filled with bakelite powder at a position close to the top and is not penetrated up and down, the top end face of the bakelite powder substrate is provided with an upward conical bulge, and the conical surface of the conical bulge is uneven. The utility model discloses can make the commutator when the insulation treatment is done behind the bonding wire, prevent that insulating varnish from flowing to the insulating groove in and make insulating varnish can firmly freeze the top terminal surface at the commutator, solve the commutator during operation insulating varnish and drop and at the accumulational technical problem in carbon brush surface.
Description
Technical Field
The utility model relates to a commutator technical field, concretely relates to hook-type commutator.
Background
The hook-type commutator comprises a bakelite powder substrate and commutation copper sheets circumferentially arranged on the excircle of the bakelite powder substrate, wherein the adjacent commutation copper sheets are isolated from each other through an insulating groove, the top of each commutation copper sheet is provided with a welding wire hook, and the commutation copper sheets and the bakelite powder substrate are integrally molded by pressure injection. After the hook-type commutator is assembled on a motor shaft, a welding wire hook of the commutator needs to be connected with a coil connecting wire on the motor shaft in a spot welding mode, after spot welding, paint dripping treatment is carried out on spot welding positions to ensure insulation, but the condition is easy to occur that insulating paint flows into an insulating groove of the commutator and also flows to the top end face of the commutator, so that the insulating paint falling off from the insulating groove can be accumulated on the surface of a carbon brush along with the sliding of an electric brush on the cylindrical surface of the commutator when the commutator operates at a high speed, and serious adverse effects are caused on the operation of the motor; meanwhile, the insulating paint can fall off from the top end face of the commutator, and the insulating paint falling off from the top end face of the commutator can move randomly in the motor, so that potential safety hazards are caused to the motor.
Disclosure of Invention
In view of the deficiencies of the prior art, an object of the present invention is to provide a hook-type commutator which can prevent the insulating paint from flowing into the insulating groove and making the insulating paint firmly freeze on the top end surface when the insulating treatment is performed after the bonding wire, so as to solve the technical problem of the shedding of the insulating paint and the accumulation of the insulating paint on the surface of the carbon brush during the operation.
The utility model discloses a realize through following technical scheme:
hook-type commutator comprises integrative pressure injection molding's bakelite powder base member and the switching-over copper sheet of making the circumference at the excircle of bakelite powder base member and arranging, carries out the interband insulation through the insulating bath between the adjacent switching-over copper sheet, and the top of switching-over copper sheet is equipped with bonding wire crotch, its characterized in that: the insulation groove is filled with bakelite powder at a position close to the top without being penetrated up and down. The top end face of the bakelite powder substrate is provided with an upward conical bulge, and the conical surface of the conical bulge is uneven. The unevenness is small annular grooves densely distributed on the conical surface.
According to the hook-type commutator in the technical scheme, firstly, the insulation groove is filled with the bakelite powder at the position close to the top and is not penetrated up and down, so that the insulation paint cannot enter the insulation groove from the end face of the top of the commutator, the insulation paint falling off from the insulation groove cannot be accumulated on the surface of the carbon brush when the commutator works, and the influence on the work of a motor is avoided; secondly, the top end face of the bakelite powder substrate is uneven, so that the insulating paint flowing to the top end face of the commutator can be firmly combined with the bakelite powder substrate after being frozen, the commutator is effectively prevented from falling off during operation, and the potential safety hazard of the motor during operation is eliminated.
Drawings
The utility model discloses there is following figure:
fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
As shown in the figure, the utility model discloses a hook-type commutator, by integrative pressure injection molding's bakelite powder base member 7 with make the 6 pieces of switching-over copper that the circumference was arranged at the excircle of bakelite powder base member 7 and constitute, carry out the piece-to-piece insulation through insulating groove 1 between the adjacent switching-over copper sheet 6, insulating groove 1 is being close to the top position and is being filled by bakelite powder 2 and not run through from top to bottom, the top of switching-over copper sheet 6 is equipped with bonding wire crotch 5, the top terminal surface of bakelite powder base member 7 has ascending toper arch 3, the toper surface of toper arch 3 has unevenness, unevenness is for the little recess 4 of annular that sets up at the dense cloth of toper surface.
Claims (2)
1. Hook-type commutator comprises integrative pressure injection molding's bakelite powder base member and the switching-over copper sheet of making the circumference at the excircle of bakelite powder base member and arranging, carries out the interband insulation through the insulating bath between the adjacent switching-over copper sheet, and the top of switching-over copper sheet is equipped with bonding wire crotch, its characterized in that: the insulation groove is filled with bakelite powder at a position close to the top and is not penetrated up and down; the top end face of the bakelite powder substrate is provided with an upward conical bulge, and the conical surface of the conical bulge is uneven.
2. The hook-type commutator of claim 1, wherein: the unevenness is small annular grooves densely distributed on the conical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922197688.8U CN211017681U (en) | 2019-12-10 | 2019-12-10 | Hook-type commutator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922197688.8U CN211017681U (en) | 2019-12-10 | 2019-12-10 | Hook-type commutator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211017681U true CN211017681U (en) | 2020-07-14 |
Family
ID=71477680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922197688.8U Active CN211017681U (en) | 2019-12-10 | 2019-12-10 | Hook-type commutator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211017681U (en) |
-
2019
- 2019-12-10 CN CN201922197688.8U patent/CN211017681U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 325200 Rui'an Economic Development Zone, Wenzhou City, Zhejiang Province Patentee after: Zhejiang Lifeng Electric Appliance Co.,Ltd. Address before: 325200 Rui'an Economic Development Zone, Wenzhou City, Zhejiang Province Patentee before: ZHEJIANG LIFENG ELECTRIC APPLIANCES Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |