CN203707536U - Powder forming carbon surface commutator - Google Patents
Powder forming carbon surface commutator Download PDFInfo
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- CN203707536U CN203707536U CN201320894036.XU CN201320894036U CN203707536U CN 203707536 U CN203707536 U CN 203707536U CN 201320894036 U CN201320894036 U CN 201320894036U CN 203707536 U CN203707536 U CN 203707536U
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- hook
- copper sheet
- main supporter
- embedded
- carbon
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Abstract
The utility model relates to a powder forming carbon surface commutator comprising a carbon matrix, a main supporting body, an intermediate filler and hook-shaped commutation strips. The carbon matrix is fixed on the internal side of the lower end of the main supporting body in an embedded way. The intermediate filler is arranged in the middle of the main supporting body. Multiple copper sheets are evenly installed on the upper end of the main supporting body along a circumference in the embedded way. Each copper sheet is provided with the hook-shaped commutation strip in an erection way. The lower end of each hook-shaped commutation strip is embedded in the carbon matrix. Bakelite powder layers are filled in gaps among the intermediate filler, the copper sheets and the main supporting body. The carbon matrix is formed in a way that graphite powder is added into the main supporting body and then pressing is performed, and the hook-shaped commutation strips are wrapped inside simultaneously. The commutator is exquisite in structure, and a welding step in technology is removed so that cost is reduced. A problem of oversized temperature in point welding of a corresponding motor rotor is solved by utilizing assembling of the copper sheets and commutator segments.
Description
Technical field
The utility model relates to commutator field, particularly relates to a kind of powder compacting carbon face commutator.
Background technology
Carbon commutator is with the corrosion-resistant and anti-wear performance of its excellence, is widely used in motor that common commutator cannot adapt to, and its structure mainly comprises by insulation support body, conductor part and carbon plate and forming.At present, the carbon plate of carbon commutator and conductive component be fixedly connected with general employing conductive adhesive, welding procedure or mosaic technology, wherein adopt conductive adhesive many.
But conducting resinl price is very expensive, cause the production cost of carbon commutator high, in addition, conductive glue adhesion is relatively poor, and is easily heated and comes unstuck, and heat resisting temperature is low, and useful life is short, and operating difficulties makes the quality stability of carbon commutator have hidden danger.
And welding procedure needs under special welding equipment and welding atmosphere just can weld, and technical process is more difficult, unreliable, the precious metal that its scolder adopts in addition, and price is very expensive, and scolder is preserved trouble, is not suitable for the large-scale production of carbon commutator.
If use in gapless the carbon plate of moulding pressing-in commutator assembly, accomplish that the carbon plate of manufactured goods is coordinated to precision with conductor part be very difficult in technique, cannot be applied in large-scale production.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of powder compacting carbon face commutator, simple in structure, has reduced cost, the problem of excess Temperature while utilizing the assembling of copper sheet and commutator segment to solve corresponding rotor spot welding.
The utility model solves the technical scheme that its technical problem adopts: a kind of powder compacting carbon face commutator is provided, comprise carbon base body, main supporter, middle obturator and hook-type commutation bar, described carbon base body embeds the inner side, lower end that is fixed on main supporter, the intermediate arrangement of described main supporter has middle obturator, the upper end of described main supporter embeds some copper sheets is installed along even circumferential, the every added hook-type commutation bar that is provided with of copper sheet, the lower end of described hook-type commutation bar is embedded in carbon base body, in gap between described middle obturator and copper sheet and main supporter, be filled with bakelite bisque.
The top of described main supporter is the T shape post of vertically arranging along even circumferential, and between adjacent T shape post, inner side is connected with positioning step, and the medial surface of this positioning step has commutation bar location notch between two parties.
Between described T shape post, vertical inserting is embedded with copper sheet, and the lateral surface of this copper sheet flushes with the lateral surface of T shape post, and the upper surface of described copper sheet has locating notch between two parties, and the both sides vertical edge of this copper sheet is furnished with the flanging matching with T shape post.
The first half of described hook-type commutation bar is " n " shape, Lower Half is L-shaped, this n shape first half is connected with L shaped Lower Half global formation and by the transiting rod of vertically arranging, the top of the described n shape first half is horizontal part, this horizontal part is embedded in the locating notch of copper sheet upper end, described transiting rod is embedded in commutation bar location notch, the bottom extension of described L shaped Lower Half is embedded in carbon base body, and the outside external part of described horizontal part is connected with the extension upper end, outside of oblique lower layout.
Described carbon base body is divided into and the scallop of hook-type commutation bar equal number uniformly by some the insulation grooves by its center of circle, on described main supporter, also has breach with the position of insulation groove.
Beneficial effect
The utility model relates to a kind of powder compacting carbon face commutator, and commutator structure is simple, and copper sheet and hook-type commutation bar matches assembling one by one, and in gap, has filled up phenolic moulding powder, has guaranteed the insulating properties that adjacent copper sheet or hook-type commutate between bar; The problem of excess Temperature while utilizing the assembling of copper sheet and commutator segment to solve corresponding rotor spot welding; Hook-type commutation bar is embedded in carbon plate in the time of carbon plate moulding, has saved welding or technique for sticking step; The carbon commutator finished product obtaining by this law; carbon plate is connected closely with conductive component and supporting mass; very close to each other; more than carbon plate tensile strength can reach 10N; and integrated artistic is simple, cost is low, and versatility is good; can apply and scale processing, and avoid the bonding and poor shortcoming of steady quality welding procedure in the past.
Accompanying drawing explanation
Fig. 1 is perspective view of the present utility model;
Fig. 2 is the structural representation that partly cuts open of the present utility model;
Fig. 3 is the schematic perspective view of main supporter described in the utility model;
Fig. 4 is the schematic perspective view of copper sheet described in the utility model;
Fig. 5 is the schematic perspective view of hook-type commutation bar described in the utility model;
Fig. 6 is partial structurtes schematic diagram of the present utility model.
Embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiment are only not used in restriction scope of the present utility model for the utility model is described.In addition should be understood that those skilled in the art can make various changes or modifications the utility model after having read the content of the utility model instruction, these equivalent form of values fall within the application's appended claims limited range equally.
As shown in Fig. 1-6, execution mode of the present utility model relates to a kind of powder compacting carbon face commutator, comprise carbon base body 6, main supporter 1, middle obturator 4 and hook-type commutation bar 3, described carbon base body 6 embeds the inner side, lower end that is fixed on main supporter 1, the intermediate arrangement of described main supporter 1 has middle obturator 4, the upper end of described main supporter 1 embeds some copper sheets 2 is installed along even circumferential, the every added hook-type commutation bar 3 that is provided with of copper sheet 2, the lower end of described hook-type commutation bar 3 is embedded in carbon base body 6, in gap between described middle obturator 4 and copper sheet 2 and main supporter 1, be filled with bakelite bisque 7.
The top of described main supporter 1 is the T shape post 11 of vertically arranging along even circumferential, and between adjacent T shape post 11, inner side is connected with positioning step 12, and the medial surface of this positioning step 12 has commutation bar location notch 13 between two parties.
Between described T shape post 11, vertical inserting is embedded with copper sheet 2, and the lateral surface of this copper sheet 2 flushes with the lateral surface of T shape post 11, and the upper surface of described copper sheet 2 has locating notch 22 between two parties, and the both sides vertical edge of this copper sheet 2 is furnished with the flanging 21 matching with T shape post 11.
The first half of described hook-type commutation bar 3 is " n " shape, Lower Half is L-shaped, this n shape first half is connected with L shaped Lower Half global formation and by the transiting rod 33 of vertical layout, the top of the described n shape first half is horizontal part 31, this horizontal part 31 is embedded in the locating notch 22 of copper sheet 2 upper ends, described transiting rod 33 is embedded in commutation bar location notch 13, the bottom extension 34 of described L shaped Lower Half is embedded in carbon base body 6, and the outside external part of described horizontal part 31 is connected with outside extension 32 upper ends of oblique lower layout.
Described carbon base body 6 is divided into and the scallop of hook-type commutation bar 3 equal numbers uniformly by some the insulation grooves 5 by its center of circle, on described main supporter 1, also has breach with the position of insulation groove 5.
Embodiment 1:
The commutator that need to manufacture now a said structure, concrete manufacturing technology steps is as follows:
A: get 2 and 8 hook-type commutation bars 3 of the copper sheet of 8 of moulding, and copper sheet 2 and hook-type commutation bar 3 surfaces are carried out Ultrasonic Cleaning and carry out zinc-plated;
B: with the compressing main supporter 1 of phenolic moulding powder and middle obturator 4;
C: 2 and 8 hook-type commutation bars 3 of 8 copper sheets are arranged in main supporter 1;
D: the main supporter 1 arranging is transferred in particular manufacturing craft, graphite powder is poured in the lower end of main supporter 1 and is pressed into pie, compacting is carried out at normal temperatures, and pressing pressure is 18Mpa, pressurize 10 seconds, carbon base body 6 is compressed together with hook-type commutation bar 3;
E: after carbon base body 6 has been suppressed, pack middle obturator 4 into, and in gap between middle obturator 4 and main supporter 1, fill full phenolic moulding powder composition bakelite bisque 7, then the temperature of 155 ℃, bakelite bisque 7 is applied the pressure of 20Mpa, pressurize moulding in 10 seconds, bakelite bisque 7 is separated adjacent hook-type commutation bar 3 completely;
F: the commutator matrix that compacting is completed is placed in baking oven, the temperature of sintering is shown in 38～241 ℃ and changes according to the Curves of Fig. 7, and sintering time is 12 hours, makes the bonding between carbon base body 6 and bakelite bisque 7 molecules more firm;
G: bore one in the center of middle obturator 4 and carbon base body 6 and connect upper and lower through hole;
H: milling insulation groove 5;
I: be up to the standards.
The component ratio of the graphite powder in step D is, in mass fraction:
Base material powder: 60%
Tin bronze powder: 40%
Wherein base material powder formula is as follows
Graphous graphite powder 88%
Phenolic resins 12%
Further arranging is after graphite powder in step D joins in main supporter 1, then to adding in graphite powder the acetone of 20 parts as dispersant, all volatilizations of acetone in step f and g process.
Further setting is, after the graphite powder in step D joins in main supporter 1, also to add and have the zinc stearate of 0.1 part as release agent.
Embodiment 2
The commutator that need to manufacture now a said structure, concrete manufacturing technology steps is as follows:
A: get 2 and 12 hook-type commutation bars 3 of the copper sheet of 12 of moulding, and copper sheet 2 and hook-type commutation bar 3 surfaces are carried out Ultrasonic Cleaning and carry out zinc-plated;
B: with the compressing main supporter 1 of phenolic moulding powder and middle obturator 4;
C: 2 and 12 hook-type commutation bars 3 of 12 copper sheets are arranged in main supporter 1;
D: the main supporter 1 arranging is transferred in particular manufacturing craft, graphite powder is poured in the lower end of main supporter 1 and is pressed into pie, compacting is carried out at normal temperatures, and pressing pressure is 24Mpa, pressurize 10 seconds, carbon base body 6 is compressed together with hook-type commutation bar 3;
E: after carbon base body 6 has been suppressed, pack middle obturator 4 into, and in gap between middle obturator 4 and main supporter 1, fill full phenolic moulding powder composition bakelite bisque 7, then the temperature of 165 ℃, bakelite bisque 7 is applied the pressure of 26Mpa, pressurize moulding in 10 seconds, bakelite bisque 7 is separated adjacent hook-type commutation bar 3 completely;
F: the commutator matrix that compacting is completed is placed in baking oven, the temperature of sintering is shown in 38～241 ℃ and changes according to the Curves of Fig. 7, and sintering time is 12.5 hours, makes the bonding between carbon base body 6 and bakelite bisque 7 molecules more firm;
G: bore one in the center of middle obturator 4 and carbon base body 6 and connect upper and lower through hole;
H: milling insulation groove 5;
I: be up to the standards.
The component ratio of the graphite powder in step D is, in mass fraction:
Base material powder: 60%
Tin bronze powder: 40%
Wherein base material powder formula is as follows
Graphous graphite powder 88%
Phenolic resins 12%
Further arranging is after graphite powder in step D joins in main supporter 1, then to adding in graphite powder the acetone of 20 parts as dispersant, all volatilizations of acetone in step f and g process.
Further setting is, after the graphite powder in step D joins in main supporter 1, also to add and have the zinc stearate of 0.1 part as release agent.
Claims (5)
1. a powder compacting carbon face commutator, comprise carbon base body (6), main supporter (1), middle obturator (4) and hook-type commutation bar (3), described carbon base body (6) embeds the inner side, lower end that is fixed on main supporter (1), the intermediate arrangement of described main supporter (1) has middle obturator (4), it is characterized in that, the upper end of described main supporter (1) embeds some copper sheets (2) is installed along even circumferential, the added hook-type commutation bar (3) that is provided with of every copper sheet (2), the lower end of described hook-type commutation bar (3) is embedded in carbon base body (6), in gap between described middle obturator (4) and copper sheet (2) and main supporter (1), be filled with bakelite bisque (7).
2. a kind of powder compacting carbon face commutator according to claim 1, it is characterized in that: the top of described main supporter (1) is the T shape post (11) of vertically arranging along even circumferential, between adjacent T shape post (11), inner side is connected with positioning step (12), and the medial surface of this positioning step (12) has commutation bar location notch (13) between two parties.
3. a kind of powder compacting carbon face commutator according to claim 2, it is characterized in that: between described T shape post (11), vertical inserting is embedded with copper sheet (2), the lateral surface of this copper sheet (2) flushes with the lateral surface of T shape post (11), the upper surface of described copper sheet (2) has locating notch (22) between two parties, and the both sides vertical edge of this copper sheet (2) is furnished with the flanging (21) matching with T shape post (11).
4. a kind of powder compacting carbon face commutator according to claim 1, it is characterized in that: the first half of described hook-type commutation bar (3) is " n " shape, Lower Half is L-shaped, this n shape first half is connected with L shaped Lower Half global formation and by the transiting rod (33) of vertically arranging, the top of the described n shape first half is horizontal part (31), this horizontal part (31) is embedded in the locating notch (22) of copper sheet (2) upper end, described transiting rod (33) is embedded in commutation bar location notch (13), the bottom extension (34) of described L shaped Lower Half is embedded in carbon base body (6), the outside external part of described horizontal part (31) is connected with outside extension (32) upper end of oblique lower layout.
5. a kind of powder compacting carbon face commutator according to claim 1, it is characterized in that: described carbon base body (6) is divided into and the scallop of hook-type commutation bar (3) equal number uniformly by some the insulation grooves (5) by its center of circle, and described main supporter (1) is upper also has breach with the position of insulation groove (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320894036.XU CN203707536U (en) | 2013-12-31 | 2013-12-31 | Powder forming carbon surface commutator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320894036.XU CN203707536U (en) | 2013-12-31 | 2013-12-31 | Powder forming carbon surface commutator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203707536U true CN203707536U (en) | 2014-07-09 |
Family
ID=51057921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320894036.XU Withdrawn - After Issue CN203707536U (en) | 2013-12-31 | 2013-12-31 | Powder forming carbon surface commutator |
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| CN (1) | CN203707536U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958292A (en) * | 2016-06-24 | 2016-09-21 | 吴清照 | High-strength commutator |
| CN103762473B (en) * | 2013-12-31 | 2017-03-29 | 宁波胜克换向器有限公司 | A kind of powder compacting carbon face commutator and its manufacturing process |
| CN106787390A (en) * | 2017-01-20 | 2017-05-31 | 陈振宁 | Brushed DC motor |
| CN106787386A (en) * | 2017-01-20 | 2017-05-31 | 黄小红 | A kind of direct current generator |
-
2013
- 2013-12-31 CN CN201320894036.XU patent/CN203707536U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103762473B (en) * | 2013-12-31 | 2017-03-29 | 宁波胜克换向器有限公司 | A kind of powder compacting carbon face commutator and its manufacturing process |
| CN105958292A (en) * | 2016-06-24 | 2016-09-21 | 吴清照 | High-strength commutator |
| CN105958292B (en) * | 2016-06-24 | 2018-03-23 | 吴清照 | High-strength commutator |
| CN106787390A (en) * | 2017-01-20 | 2017-05-31 | 陈振宁 | Brushed DC motor |
| CN106787386A (en) * | 2017-01-20 | 2017-05-31 | 黄小红 | A kind of direct current generator |
| CN106787386B (en) * | 2017-01-20 | 2023-08-01 | 揭阳市顺成发微电机有限公司 | DC motor |
| CN106787390B (en) * | 2017-01-20 | 2024-03-01 | 浙江炬光汽车零部件有限公司 | Brush DC motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140709 Effective date of abandoning: 20170329 |
|
| AV01 | Patent right actively abandoned |