EP0208701A1 - Kommutator für elektrische maschinen - Google Patents
Kommutator für elektrische maschinenInfo
- Publication number
- EP0208701A1 EP0208701A1 EP19860900055 EP86900055A EP0208701A1 EP 0208701 A1 EP0208701 A1 EP 0208701A1 EP 19860900055 EP19860900055 EP 19860900055 EP 86900055 A EP86900055 A EP 86900055A EP 0208701 A1 EP0208701 A1 EP 0208701A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bearing bush
- commutator
- segments
- insulating body
- face
- 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.)
- Withdrawn
Links
Classifications
-
- 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
Definitions
- the invention is based on a commutator according to the preamble of the main claim.
- the segments on the end face are additionally anchored in the insulating body by a collar molded onto the insulating material body, the anchoring for the segments is disadvantageously not sufficient.
- the transition area of the bush-shaped insulating body into the frontal collar there is the greatest insulating material concentration in such commutators. At the same time, it forms the area where the maximum centrifugal and pull-out forces occur which act on the commutator with rotor winding ends attached to the flags.
- the invention has for its object to provide a commutator, the spin resistance is improved especially in the connection area of the rotor winding ends, so that the segments are no longer thrown out of the insulating body or torn.
- the measures specified in the characterizing part of the main claim are provided to achieve this object.
- the reinforcement section provided with a U-shaped cross section is provided in the transition region to the shaft of the bearing bush with additional anchoring means in the form of beads pressed outwards and sheared through in the longitudinal direction.
- FIG. 1 shows a commutator in longitudinal section
- FIG. 2 shows a view of the bearing sleeve of the commutator in the direction of arrow II in FIG. 1.
- a commutator for electrical machines consists of a large number of segments, for example of copper.
- a connecting lug 2 is formed for winding ends of a rotor winding which are known per se and are not shown in detail.
- the end face 3 of each segment 3 is formed with a groove h which lies in the region of the connecting lug 2 and which is delimited by a projection 5 which protrudes beyond the end face 3 at the edge of the segment 1.
- the segments 1 are still connected to a commutator segment ring when the commutator is manufactured, for example.
- the segments 1 are already in the position they have in the finished commutator.
- the grooves 4 in the end face 3 then form an interrupted annular groove 6 between the individual connecting lugs 2. It includes an annular projection 7, which is also interrupted and is formed from the projections 5.
- a metal bearing bush 8 is designed, for example, as a deep-drawn part.
- the bearing bush 8 has a longitudinal bore 9 which serves to receive the commutator on the rotor shaft (not shown).
- the flange 10 essentially has an irregular profile.
- six beads 11, for example, are pressed outwards at the same angular distance from one another. The beads 11 are sheared through on their long sides 12.
- the bearing bush 8 is arranged within the ring formed by the segments 1 at a distance from the anchoring means known per se and not shown in detail on the side 13 of the segments 1 facing the bearing bush 8.
- the flange 10 of the bearing bush 8 encompasses the projections 5, which form the annular extension 7 of the segment ring, also with respect.
- the beads 11 extend to the side 13 of the segments 1, while the bent edge 14 of the flange 10 again projects into the annular groove 6 at a distance from the segments 1.
- the space between the individual segments 1 and between the segments 1 and the bearing bush 8 is filled with a plastic, for example a duroplastic, forming an insulating body 15.
- the insulating body 15 extends on the one hand to the end face of the flange 10 of the bearing bush 8, surrounds the edge 14 of the flange 10 on the end face 3 of the segments 1 approximately up to the height of the flag slots 16 and fills the beads 11.
- the beads 11 form additional anchoring means in the area of the greatest material concentration in the insulating body 15.
- the insulating body 15 projects beyond the other end of the bearing bush 8 and segments 1 and rests with a collar 17 on this end of the segments 1.
- the bearing bush 8 with flange 10, 1 4 and beads 11 can be produced, for example, as a deep-drawn part in an economical manner even with large-scale production.
- the bearing bush 8 is provided, for example, in the shaft with bores in a manner known per se and not shown in detail, into which the plastic of the insulating body 15 extends in an anchoring manner.
- the surface of the shaft of the bearing bush 8 has a knurling or similar molded radial ridges and / or recesses exercises.
- the surface of the shaft can also be sandblasted, steel gravel or phosphated, for example.
- the end face of the flange 10 also enables a good reception of the bearing bush 8 in the injection mold, in order to be able to reliably maintain a uniform insulation distance between the flange 10 and the edge 14 of the bearing bush 8 and the projection 5 and groove 4 on the end face 3 of the segments 1.
Landscapes
- Motor Or Generator Current Collectors (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3501378 | 1985-01-17 | ||
DE19853501378 DE3501378A1 (de) | 1985-01-17 | 1985-01-17 | Kommutator fuer elektrische maschinen |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0208701A1 true EP0208701A1 (de) | 1987-01-21 |
Family
ID=6260046
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19860900055 Withdrawn EP0208701A1 (de) | 1985-01-17 | 1985-12-13 | Kommutator für elektrische maschinen |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0208701A1 (de) |
DE (1) | DE3501378A1 (de) |
ES (1) | ES8706354A1 (de) |
WO (1) | WO1986004459A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3823844A1 (de) * | 1988-07-14 | 1990-01-18 | Kautt & Bux Kg | Kommutator fuer elektrische maschinen und verfahren zu seiner herstellung |
US5272404A (en) * | 1991-03-01 | 1993-12-21 | Mabuchi Motor, Co., Ltd. | Miniature motor having a built-up commutator |
DE10034517A1 (de) * | 2000-07-15 | 2002-01-24 | Valeo Auto Electric Gmbh | Elektromotor |
JP3972729B2 (ja) * | 2002-05-23 | 2007-09-05 | 株式会社デンソー | 直流モータおよびエンジン始動装置 |
CN108418064A (zh) * | 2018-05-18 | 2018-08-17 | 瑞安市拓博机电有限公司 | 大功率电机换向器 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR732946A (fr) * | 1931-03-11 | 1932-09-28 | Alsthom Cgee | Collecteur à lames pour machines et appareils électriques |
US2061821A (en) * | 1935-04-27 | 1936-11-24 | Darroch Gourley | Commutator |
NL44528C (de) * | 1935-08-21 | |||
US4376254A (en) * | 1981-06-10 | 1983-03-08 | General Motors Corporation | Annular molded article secured to a shaft |
-
1985
- 1985-01-17 DE DE19853501378 patent/DE3501378A1/de not_active Withdrawn
- 1985-12-13 WO PCT/DE1985/000521 patent/WO1986004459A1/de unknown
- 1985-12-13 EP EP19860900055 patent/EP0208701A1/de not_active Withdrawn
-
1986
- 1986-01-17 ES ES550998A patent/ES8706354A1/es not_active Expired
Non-Patent Citations (1)
Title |
---|
See references of WO8604459A1 * |
Also Published As
Publication number | Publication date |
---|---|
ES550998A0 (es) | 1987-05-01 |
WO1986004459A1 (en) | 1986-07-31 |
ES8706354A1 (es) | 1987-05-01 |
DE3501378A1 (de) | 1986-07-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19861218 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: BUSCHE, HUBERT Inventor name: DEIERLING, HANS-HEINRICH Inventor name: KURZ, KARL-HEINZ Inventor name: SCHWERDTLE, MARTIN Inventor name: LAUTER, FRANZ-GEORG |