CN110459930B - Groove type commutator - Google Patents
Groove type commutator Download PDFInfo
- Publication number
- CN110459930B CN110459930B CN201910874593.7A CN201910874593A CN110459930B CN 110459930 B CN110459930 B CN 110459930B CN 201910874593 A CN201910874593 A CN 201910874593A CN 110459930 B CN110459930 B CN 110459930B
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- CN
- China
- Prior art keywords
- half body
- copper sheet
- right half
- left half
- reversing
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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
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/04—Commutators
Abstract
The invention discloses a groove-shaped commutator, which comprises a bakelite powder substrate and a plurality of commutation copper sheets uniformly distributed on the periphery of the bakelite powder substrate, wherein the adjacent commutation copper sheets are insulated and isolated by mica sheets, the top of each commutation copper sheet is provided with a welding wire step, the welding wire step is provided with a welding wire groove, and the inner side surface of each commutation copper sheet is provided with a fixing pin which is embedded into the bakelite powder substrate, and the groove-shaped commutator is characterized in that: each reversing copper sheet is composed of a left half body and a right half body which are split in the middle and have the same shape, the left half body and the right half body are in close contact with each other, and the fixing feet are arranged on the inner side surfaces of the left half body and the right half body. The invention solves the technical problem that the fixed leg can not be punched from the side surface direction due to the large circumferential angle of the reversing copper sheet in the prior art, and simultaneously effectively solves the problem of large working noise caused by the large circumferential size and large thermal deformation during working of the reversing copper sheet.
Description
Technical Field
The invention relates to an improved groove type commutator.
Background
The groove-shaped commutator in the prior art comprises an bakelite powder substrate and a plurality of reversing copper sheets uniformly distributed on the outer circle of the bakelite powder substrate in a circumferential mode, wherein fixing pins are arranged on the inner side surface of each reversing copper sheet, the shape of the cross section of each reversing copper sheet is firstly pulled out from the copper sheet during forming, then the reversing copper sheets are punched from the side surface direction, and the fixing pins are formed during punching. When two welding wire grooves are formed in one reversing copper sheet, the number of the reversing copper sheets is small, the circumferential angle is large, the inner sides of two side wings of the reversing copper sheet block partial punching paths of fixing feet due to the increase of the circumferential angle, and therefore the forming of the fixing feet is influenced. In addition, the commutation copper sheet with a large circumferential angle is large in circumferential dimension and large in thermal deformation during working, so that the circumferential surface of the commutator in contact with the carbon brush is not smooth, and the working noise is large.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a groove-type commutator which solves the technical problem that the fixed pins cannot be punched from the side surface direction due to the large circumferential angle of the commutation copper sheet in the prior art, and also solves the problem of large working noise caused by the large circumferential dimension and large thermal deformation during working of the commutation copper sheet.
The invention is completed by adopting the following technical scheme:
cell type commutator, including the bakelite powder base member and make many switching-over copper sheets of circumference equipartition at the excircle of bakelite powder base member, carry out insulation by the mica sheet between the adjacent switching-over copper sheet and keep apart, the top of switching-over copper sheet is equipped with the bonding wire step, and the bonding wire groove is seted up to the bonding wire step, and the medial surface of switching-over copper sheet is equipped with fixed foot and implants its characterized in that in the bakelite powder base member: each reversing copper sheet is composed of a left half body and a right half body which are split in the middle and have the same shape, the left half body and the right half body are in close contact with each other, and the fixing feet are arranged on the inner side surfaces of the left half body and the right half body.
And reinforcing ring grooves are formed in the upper end and the lower end of the fixing foot, and reinforcing rings are placed in the reinforcing ring grooves.
The groove-shaped commutator in the technical scheme has the innovative key that a commutating copper sheet with a larger circumferential angle is split from the middle into a left half body and a right half body with the same size, so that the circumferential angle of the original commutating copper sheet is halved, and fixing feet are respectively arranged on the inner side surfaces of the left half body and the right half body, so that the inner sides of two side wings of the commutating copper sheet cannot block punching paths of the fixing feet, further the commutating copper sheet can form the fixing feet in the punching process, and the technical problem that the fixing feet cannot be punched from the side surface direction due to the large circumferential angle of the commutating copper sheet in the prior art is solved; meanwhile, through the design, when the upper end and the lower end of the fixing leg are provided with the reinforcing ring grooves, the punching of the reinforcing ring grooves cannot be influenced, if the original design is adopted, the inner sides of the two side wings of the reversing copper sheet can also block part of the punching path of the reinforcing ring grooves, and the method is obviously not suitable unless the size of the reinforcing ring grooves is changed. In addition, the circumference size of the commutation copper sheet is reduced, the thermal deformation is small during working, the circumferential surface of the commutator contacted with the carbon brush is smooth, and the generation of working noise is reduced.
Drawings
The invention has the following drawings:
figure 1 is a top view of the present invention,
figure 2 is a cross-sectional view B-B of figure 1,
figure 3 is an enlarged view of the commutator sheet of figure 1,
fig. 4 is a block diagram of a prior art commutator copper sheet.
Detailed Description
As shown in fig. 1-3, the groove-type commutator of the invention comprises a bakelite powder substrate 1 and thirteen commutating copper sheets 2 uniformly distributed on the outer circle of the bakelite powder substrate 1, wherein adjacent commutating copper sheets 2 are insulated and isolated by mica sheets 3, each commutating copper sheet 2 consists of a left half body 21 and a right half body 21 which are split in the middle (split line A) and have the same shape, the left half body 21 and the right half body 21 are mutually clung and contacted, the top of the commutating copper sheets 2 is provided with a welding line step 7, the left half body 21 and the right half body 21 are respectively provided with a welding line groove 4 at the welding line step, the inner side surface of the commutating copper sheets 2 is provided with a fixed pin 5 implanted into the bakelite powder substrate, the fixed pins 5 are arranged on the inner side surface of the left half body 21 and the inner side surface of the right half body 21, the upper end and the lower end of the fixed pin 5 are provided with reinforcing ring grooves 8, and rings 6 are arranged in the reinforcing ring grooves 8.
Fig. 4 shows a groove-type commutator copper sheet of the prior art, and it is obvious that, when the commutator copper sheet 10 is punched from the side direction (arrow direction), the inner sides (portions 11) of the two side wings of the commutator copper sheet 10 block part of the punching path of the fixing leg 12, so that the fixing leg 12 cannot be punched.
Claims (2)
1. Cell type commutator, including the bakelite powder base member and make many switching-over copper sheets of circumference equipartition at the excircle of bakelite powder base member, carry out insulation by the mica sheet between the adjacent switching-over copper sheet and keep apart, the top of switching-over copper sheet is equipped with the bonding wire step, and the bonding wire groove is seted up to the bonding wire step, and the medial surface of switching-over copper sheet is equipped with fixed foot and implants its characterized in that in the bakelite powder base member: each reversing copper sheet is composed of a left half body and a right half body which are split in the middle and have the same shape, the left half body and the right half body are in close contact with each other, the fixing feet are arranged on the inner side surfaces of the left half body and the right half body, and the inner sides of the two side wings of the reversing copper sheet cannot block the punching path of the fixing feet.
2. The slot type commutator of claim 1, wherein: and reinforcing ring grooves are formed in the upper end and the lower end of the fixing foot, and reinforcing rings are placed in the reinforcing ring grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910874593.7A CN110459930B (en) | 2019-09-17 | 2019-09-17 | Groove type commutator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910874593.7A CN110459930B (en) | 2019-09-17 | 2019-09-17 | Groove type commutator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110459930A CN110459930A (en) | 2019-11-15 |
| CN110459930B true CN110459930B (en) | 2021-07-27 |
Family
ID=68492149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910874593.7A Active CN110459930B (en) | 2019-09-17 | 2019-09-17 | Groove type commutator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110459930B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5175463A (en) * | 1989-08-07 | 1992-12-29 | Kirkwood Industries | Carbon commutator |
| CN201910559U (en) * | 2011-01-01 | 2011-07-27 | 浙江顺达机电有限公司 | Reversing sheet for commutator |
| CN203119257U (en) * | 2013-03-25 | 2013-08-07 | 浙江利丰电器股份有限公司 | Groove-type reverser |
| CN205960383U (en) * | 2016-06-13 | 2017-02-15 | 薛瑞华 | Take commutator of beaded finish location |
| CN206931810U (en) * | 2017-06-20 | 2018-01-26 | 瑞安市双峰换向器有限公司 | Reinforce tank commutator |
-
2019
- 2019-09-17 CN CN201910874593.7A patent/CN110459930B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110459930A (en) | 2019-11-15 |
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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. |
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| CP01 | Change in the name or title of a patent holder |