CN201656211U - Commutator - Google Patents
Commutator Download PDFInfo
- Publication number
- CN201656211U CN201656211U CN2010201974145U CN201020197414U CN201656211U CN 201656211 U CN201656211 U CN 201656211U CN 2010201974145 U CN2010201974145 U CN 2010201974145U CN 201020197414 U CN201020197414 U CN 201020197414U CN 201656211 U CN201656211 U CN 201656211U
- Authority
- CN
- China
- Prior art keywords
- commutator
- matrix
- commutating
- sheets
- commutator segment
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a commutator which comprises a base body and a plurality of independent commutating sheets spliced on the columnar face of the base body. The commutator is characterized in that the splicing faces of the commutating sheets are provided with opening holes; the middle part of splicing faces at both sides of the commutating sheets is respectively provided with an arc curved face; and the arc curved face is arranged along the length direction of the commutating sheets. The commutator has good intensity and long service life.
Description
[technical field]
The utility model relates to a kind of improvement invention of commutator.
[background technology]
Commutator generally uses in electric tool, at present, hook that specification is bigger or tank commutator, generally all have a plurality of independently commutator segments, a plurality of independently commutator segments and phenolic moulding powder matrix are fixed together by the pressure injection method, commutator segment is plugged on the face of cylinder of matrix, its ubiquitous shortcoming is, present commutator structure intensity is relatively poor, under the operational environment that commutator runs up, because insufficient strength, a lot of commutator segments can become flexible with being connected of matrix, cause commutator to damage, the useful life of commutator is shorter.
[summary of the invention]
At the deficiencies in the prior art, the purpose of this utility model aims to provide that a kind of intensity is good, the commutator of long service life.
The utility model is achieved through the following technical solutions:
A kind of commutator comprises matrix and a plurality of independently commutator segments that are plugged on the described matrix face of cylinder, and it is characterized in that: the plug surface of described commutator segment is provided with perforate.The both sides plug surface mid portion of described commutator segment respectively has one section arc-shaped curved surface, and arc-shaped curved surface is provided with along the commutator segment length direction.
The beneficial effects of the utility model are: all be provided with perforate on the plug surface of each commutator segment, like this when commutator segment connects with phenolic moulding powder matrix pressure injection, phenolic moulding powder can squeeze in the above-mentioned perforate, between all commutator segments, form an annular reinforcing ring, increased the bonding strength of matrix and all commutator segments, the bulk strength of commutator just is greatly improved like this, and prolonged useful life; In addition, the both sides plug surface mid portion of commutator segment respectively has one section arc-shaped curved surface, this arc-shaped curved surface has increased the contact area between commutator segment and the matrix, bonding strength between the two is improved, play the effect that improves the commutator bulk strength equally, thereby improve the useful life of commutator.
[description of drawings]
Fig. 1 is a structural representation of the present utility model
Fig. 2 is the A-A view of Fig. 1
Fig. 3 is the enlarged drawing of commutator segment among Fig. 2
[embodiment]
As accompanying drawing 1,2, shown in 3, this commutator is a tank commutator, comprise matrix 1, commutator segment 2, lining 6 and reinforcing ring 5, described commutator segment 2 has 32, be plugged on the face of cylinder of described matrix 1, the material of matrix 1 is a phenolic moulding powder, fixedly connected between matrix 1 and the commutator segment 2 by the pressure injection mode, the plug surface of described commutator segment 2 is provided with perforate 3, this perforate is a circular hole, it can certainly be slotted hole, other shape such as square hole, when commutator segment 2 connects with phenolic moulding powder matrix 1 pressure injection, phenolic moulding powder can squeeze in the above-mentioned perforate 3, between all commutator segments 2, form an annular reinforcing ring 4, increased the bonding strength of matrix and all commutator segments, the bulk strength of commutator just is greatly improved like this, the both sides plug surface mid portion of described commutator segment 2 respectively has one section arc-shaped curved surface 7, arc-shaped curved surface 7 is along commutator segment 2 length direction settings, this arc-shaped curved surface 7 has increased the contact area between commutator segment 2 and the matrix 1, bonding strength between the two is improved, plays the effect that improves the commutator bulk strength equally, described lining 6 is located at matrix 1 endoporus, described reinforcing ring 5 is located in the groove of commutator segment 2, mainly plays a part to reinforce.
In sum, commutator intensity height of the present utility model, under the operational environment that runs up, commutator segment was difficult for becoming flexible the long service life of commutator with being connected of matrix.
Claims (2)
1. commutator comprises matrix (1) and is plugged on a plurality of independently commutator segments (2) on described matrix (1) face of cylinder that it is characterized in that: the plug surface of described commutator segment (2) is provided with perforate (3).
2. a kind of commutator as claimed in claim 1 is characterized in that: the both sides plug surface mid portion of described commutator segment (2) respectively has one section arc-shaped curved surface (7), and arc-shaped curved surface (7) is along commutator segment (2) length direction setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201974145U CN201656211U (en) | 2010-05-10 | 2010-05-10 | Commutator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201974145U CN201656211U (en) | 2010-05-10 | 2010-05-10 | Commutator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201656211U true CN201656211U (en) | 2010-11-24 |
Family
ID=43121451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201974145U Expired - Fee Related CN201656211U (en) | 2010-05-10 | 2010-05-10 | Commutator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201656211U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958294A (en) * | 2016-06-24 | 2016-09-21 | 吴清照 | Mica slot type commutator |
-
2010
- 2010-05-10 CN CN2010201974145U patent/CN201656211U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958294A (en) * | 2016-06-24 | 2016-09-21 | 吴清照 | Mica slot type commutator |
| CN105958294B (en) * | 2016-06-24 | 2018-04-06 | 吴清照 | There is mica tank commutator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20170510 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |