EP2076945A1 - Kommutator für eine elektrische maschine - Google Patents
Kommutator für eine elektrische maschineInfo
- Publication number
- EP2076945A1 EP2076945A1 EP07788111A EP07788111A EP2076945A1 EP 2076945 A1 EP2076945 A1 EP 2076945A1 EP 07788111 A EP07788111 A EP 07788111A EP 07788111 A EP07788111 A EP 07788111A EP 2076945 A1 EP2076945 A1 EP 2076945A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- commutator
- winding connection
- segment
- segment support
- connection hook
- 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.)
- Granted
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
- H01R39/045—Commutators the commutators being made of carbon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/02—Soldered or welded connections
- H01R4/028—Soldered or welded connections comprising means for preventing flowing or wicking of solder or flux in parts not desired
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/06—Manufacture of commutators
- H01R43/08—Manufacture of commutators in which segments are not separated until after assembly
Definitions
- the invention relates to a commutator according to the preamble of claim 1.
- a hook commutator for an electric motor armature has a plurality of spaced, metallic Segmenttrag kind each having a verkrallten in a hub body mounting portion which is fixedly and electrically connected to a carbon contact segment, wherein the contact segments in total form a brush running surface.
- An axial section adjoins the attachment section of each segment support part in the axial direction, on which end a winding connection hook is provided, with which a winding wire can be electrically connected.
- a winding wire is wound in each winding terminal hook.
- connection process it depends on a necessary connection process of winding wire and winding connection hook on a consistently good mechanical and electrical connection quality of winding connection hook and winding wire.
- a connection process one uses the so-called "hot staking". In this case, the winding connection hook is deformed so that the winding wire is clamped. Thereafter, an electrical voltage is applied to heat the winding terminal hook and the winding wire. In this process, an insulating layer separates from the winding wire and it finds a welding of winding wire and winding connection hook instead.
- the invention is therefore based on the object of proposing a commutator, in which, preferably without reducing the amount of solder, laterally projecting at the mounting portions Lotüber von be avoided.
- the invention is based on the idea to introduce a recess, in particular an elongated recess, into the fastening segment of the segment support part, which is preferably made of copper or a copper alloy, and / or into the underside of the contact segment, preferably made of a carbon-graphite mixture, facing the fastening section which serves as a solder barrier and which, at least in some areas, prevents the solder from flowing over the peripheral edge of the fastening section or the contact segment.
- a solder barrier depression can be used in the production of the segment support be embossed or punched in a simple manner in the mounting portion.
- the depth and width of the solder barrier well should be sized so that sufficient liquid solder can be accommodated to prevent overflow of the solder barrier well.
- the solder barrier depression preferably completely delimits a soldering surface to be provided during the bonding process with solder.
- the commutator is designed as a planar commutator with a planar brush running surface, wherein the attachment portion is formed by a radial portion of the segment support member, it is advantageous to arrange the Lotbarriere-depression at least in a radially outer region of the mounting portion to a leakage of liquid solder to prevent on the peripheral side of the commutator.
- the solder barrier recess has a small edge distance on the contact segment underside and / or on the mounting section top side is arranged.
- the solder barrier depression is preferably designed as a circumferentially closed, trench-like depression.
- a heat barrier region having a reduced cross-sectional area is provided in a region between the winding connection hook and the fastening section.
- the effective cross-sectional area in the thermal barrier area is reduced by introducing into the segment support part at least one circumferentially closed or edge-open recess, which is preferably arcuately contoured, at least partially.
- the thermal barrier region is preferably formed between two open recesses which are spaced apart in the circumferential direction, open at the edge, in particular curved inward, so that only this small cross-sectional surface area is available for heat transport in the direction of the fastening section.
- the extent of the heat barrier region in the circumferential direction corresponds at least approximately to the extent of the winding connection hook in the circumferential direction.
- the Commutator In the production of the Commutator is a metallic stamped and bent part, in particular made of copper for use, which has in the circumferential direction juxtaposed segment support parts. In each case a solder barrier depression is preferably introduced into these segment support parts.
- Each segment support part has a winding connection hook and a fixing section for fixing a contact segment.
- Each two adjacent segment support members are connected to each other via a circumferentially oriented, preferably curved web. Otherwise, there is only one air gap between the adjacent segment support members. In sum, all webs form an annular connection.
- this annular connection is spaced as far as possible from the winding connection hooks, preferably in the region of the free end of the fastening sections remote from the winding connection hooks.
- a contact disk is first soldered onto the fastening sections.
- the partial encapsulation of the component comprising a metallic stamped and bent part and a contact disc, which preferably consists of carbon or a carbon-graphite mixture, with an insulating material, preferably a molding material, in particular a thermoset with hardening elements, such as glass fibers or glass fiber beads.
- the mutually facing metallic sides of the segment support members are also encapsulated.
- the contact disk In order to realize an electrical insulation of the segment support parts from each other, the contact disk must be divided into individual contact segments in a further step. Furthermore, all connecting webs between the segment supporting parts must be removed. This happens, for example, through a sawing process, where in the width of the saw or the saw blade is preferably less than the air gap between two adjacent segment support parts. After the separation of the connecting webs remain on each segment support member two free, so not isolated from the hub body metal surfaces exist on the heat particularly in the segment support member or its attachment portion "flow" and thus can adversely affect the solder connection to the associated contact segment.
- the invention relates not only to the finished commutator, but also the annular stamped and bent part, in particular made of copper or a copper alloy for its production, in which the connecting webs between the individual segment support parts are located as far away from the winding connection hooks.
- FIG. 1 is a perspective view of a commutator designed as a planar commutator
- Fig. 2 a stamped and bent part for producing a commutator
- FIG. 3 shows a sectional partial view of the stamped bent part along the section line A - A according to FIG. 2.
- a designed as a plan commutator commutator 1 for an otherwise known electric machine (not shown) is shown.
- the invention can also be realized with a commutator having a brush running surface arranged on the lateral surface.
- the commutator 1 is formed symmetrically to a longitudinal axis L and is rotatably mounted in the mounted state on a not shown, a central receiving opening of the commutator passing through the armature shaft.
- the commutator 1 has a formed as a plastic injection molded part hub body 3, which carries a plurality of distributed over the circumference, spaced from each other Segmenttragmaschine 4 made of copper.
- Each segment support part 4 has a plate-shaped fastening section 5 designed as a radial commutator in the commutator 1 designed as a planar commutator, shown in FIG. 2, and an axial section 6 angled away by 90 ° thereto, the latter facing away from the fastening section 5 at its end Winding connection hook 7 carries.
- the winding connection hooks 7 are bent in the direction of a front-side, planar brush tread 8.
- the brush tread 8 is formed by a plurality of contact segments 9 made of carbon or a carbon-graphite mixture.
- Each contact segment 9, which tapers inwardly in the radial direction, is assigned a fastening section 5 of a segment support part 4, wherein each contact segment 9 is soldered firmly and in an electrically conductive manner to the associated fastening section 5.
- the contact segments 9 are metallized on the fastening sections 5 facing side in a known manner.
- two adjacent contact segments 9 are electrically insulated from each other via an air gap 10 extending in the radial direction.
- a stamped and bent part 11 (base) is shown, which is needed for the production of the commutator.
- the stamped and bent part 11 has a multiplicity of segment support parts 4 which are adjacent in the circumferential direction, with two adjacent segment support parts 4 being connected to each other via a connecting web 12.
- the contact segments 9 forming contact disc (not shown) soldered, whereupon the unit of stamped and bent part 11 contact disc is partially encapsulated by hub body material, among others, the facing sides 13, 14 of the mounting portions 5 are encapsulated.
- the connecting webs 12 In order to electrically isolate the individual segment support parts 4 from one another, the connecting webs 12 must be separated from each other in a further step, in particular by a sawing process.
- the connecting webs 12 are arranged at the inner radius of the stamped and bent part 12. Only obliquely downwardly facing anchoring claws, which may also be dispensed with, project beyond the connecting webs 12 in the radial direction obliquely inside.
- solder barrier depression 16 is punched into each fastening section 5, which is intended to prevent a flow of solder beyond the edge 17 of the fastening sections 5.
- the solder barrier depression 16 is a circumferentially closed, essentially triangular-shaped, trench-like depression having a depth t and a width b. The distance of the solder barrier depression 16 from the edge 17 corresponds approximately to the single to double width b of the solder barrier depression 16.
- a heat barrier region 18 is provided, which deteriorates the heat conduction from the winding connection hooks 7, in particular during a hot-staking process for fastening a winding wire in the direction of the fastening section 5.
- the cross-sectional area of the heat barrier region 18 is reduced in a region near the winding terminal hook 7 as compared with the cross-sectional area of the axial portion 6.
- the cross-sectional area reduction is realized by means of two opposing edge-open recesses 19, 20, which are arc-shaped at their inner, mutually facing end are contoured.
- the extent x of the heat barrier region 18 in the circumferential direction approximately corresponds to the extent x of the associated winding connection hook 7 in the circumferential direction.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Motor Or Generator Current Collectors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006046669A DE102006046669A1 (de) | 2006-09-29 | 2006-09-29 | Kommutator für eine elektrische Maschine |
PCT/EP2007/057940 WO2008040586A1 (de) | 2006-09-29 | 2007-08-01 | Kommutator für eine elektrische maschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2076945A1 true EP2076945A1 (de) | 2009-07-08 |
EP2076945B1 EP2076945B1 (de) | 2017-03-22 |
Family
ID=38434423
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07788111.8A Not-in-force EP2076945B1 (de) | 2006-09-29 | 2007-08-01 | Kommutator für eine elektrische maschine |
Country Status (6)
Country | Link |
---|---|
US (1) | US8269394B2 (de) |
EP (1) | EP2076945B1 (de) |
CA (1) | CA2664436C (de) |
DE (1) | DE102006046669A1 (de) |
MX (1) | MX2009003341A (de) |
WO (1) | WO2008040586A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104979731A (zh) * | 2014-04-02 | 2015-10-14 | 德昌电机(深圳)有限公司 | 电机换向器、含碳制品及其制造方法 |
DE102015202349A1 (de) | 2014-12-16 | 2016-06-16 | Volkswagen Aktiengesellschaft | Verschaltungsanordnung einer elektrischen Maschine mit asymmetrischem Querschnitt in einem Verbindungsabschnitt |
CN107453177B (zh) * | 2016-05-30 | 2023-04-28 | 深圳市凯中精密技术股份有限公司 | 一种铜壳,具有其的换向器及换向器制作方法 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4028420A1 (de) | 1990-09-07 | 1992-03-12 | Kautt & Bux Kg | Plankommutator und verfahren zu seiner herstellung |
JP3313509B2 (ja) * | 1994-04-25 | 2002-08-12 | 株式会社ミツバ | コミテータ |
KR100332318B1 (ko) | 1998-02-02 | 2002-04-12 | 오카메 히로무 | 정류자 및 그 제조 방법 |
DE19926900A1 (de) * | 1999-06-12 | 2000-12-21 | Kirkwood Ind Gmbh | Verfahren zur Herstellung eines Plankommutators und nach diesem Verfahren hergestellter Kommutator |
DE19956844A1 (de) * | 1999-11-26 | 2001-06-13 | Kolektor D O O | Plankommutator, Verfahren zu seiner Herstellung sowie Leiterrohling und Kohlenstoffscheibe zur Verwendung bei seiner Herstellung |
US6525445B2 (en) * | 2000-04-13 | 2003-02-25 | Denso Corporation | Plane commutator and method of manufacturing the same |
US6784589B1 (en) * | 2000-05-25 | 2004-08-31 | Sugiyama Seisakusyo Co. Ltd. | Plane carbon commutator |
MXPA05006707A (es) * | 2000-05-31 | 2005-09-08 | Kolektor Group Doo | Conmutador plano. |
DE10042512A1 (de) | 2000-08-30 | 2002-03-28 | Bosch Gmbh Robert | Hakenkommutator |
GB0104915D0 (en) * | 2001-02-28 | 2001-04-18 | Johnson Electric Sa | A planar carbon segment comutator |
DE102004003146B4 (de) * | 2003-01-22 | 2023-08-24 | Aisan Kogyo Kabushiki Kaisha | Motor, Kraftstoffpumpe, Kommutator und Verfahren zur Herstellung eines Kommutators |
US7419084B2 (en) * | 2004-11-24 | 2008-09-02 | Xerox Corporation | Mounting method for surface-mount components on a printed circuit board |
-
2006
- 2006-09-29 DE DE102006046669A patent/DE102006046669A1/de not_active Withdrawn
-
2007
- 2007-08-01 WO PCT/EP2007/057940 patent/WO2008040586A1/de active Application Filing
- 2007-08-01 CA CA2664436A patent/CA2664436C/en active Active
- 2007-08-01 MX MX2009003341A patent/MX2009003341A/es not_active Application Discontinuation
- 2007-08-01 US US12/443,592 patent/US8269394B2/en active Active
- 2007-08-01 EP EP07788111.8A patent/EP2076945B1/de not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
See references of WO2008040586A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2076945B1 (de) | 2017-03-22 |
US8269394B2 (en) | 2012-09-18 |
CA2664436A1 (en) | 2008-04-10 |
WO2008040586A1 (de) | 2008-04-10 |
MX2009003341A (es) | 2009-04-14 |
DE102006046669A1 (de) | 2008-04-03 |
CA2664436C (en) | 2012-04-17 |
US20100019615A1 (en) | 2010-01-28 |
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