EP1902447A1 - Resistor component for an electric motor with fixing element - Google Patents
Resistor component for an electric motor with fixing elementInfo
- Publication number
- EP1902447A1 EP1902447A1 EP06761764A EP06761764A EP1902447A1 EP 1902447 A1 EP1902447 A1 EP 1902447A1 EP 06761764 A EP06761764 A EP 06761764A EP 06761764 A EP06761764 A EP 06761764A EP 1902447 A1 EP1902447 A1 EP 1902447A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- resistor
- resistance component
- insulating material
- resistance
- electrical machine
- 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- Withdrawn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
- H01C—RESISTORS
- H01C3/00—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids
- H01C3/14—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids the resistive element being formed in two or more coils or loops continuously wound as a spiral, helical or toroidal winding
- H01C3/20—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids the resistive element being formed in two or more coils or loops continuously wound as a spiral, helical or toroidal winding wound on cylindrical or prismatic base
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/01—Mounting; Supporting
- H01C1/012—Mounting; Supporting the base extending along and imparting rigidity or reinforcement to the resistive element
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
- H01C1/034—Housing; Enclosing; Embedding; Filling the housing or enclosure the housing or enclosure being formed as coating or mould without outer sheath
- H01C1/036—Housing; Enclosing; Embedding; Filling the housing or enclosure the housing or enclosure being formed as coating or mould without outer sheath on wound resistive element
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C3/00—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids
- H01C3/14—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids the resistive element being formed in two or more coils or loops continuously wound as a spiral, helical or toroidal winding
Definitions
- the invention relates to a resistance component for an electrical machine with at least one resistor and insulating material, wherein the resistor is surrounded by the insulating material.
- the resistance component is preferably configured as a hollow cylinder or hollow cylinder segment whose radius of curvature substantially corresponds to the radius of curvature of a jacket housing of the electrical machine.
- the invention relates to a brush bridge and an electrical machine with such a resistance component.
- Resistor components of the generic type are known for example from DE 295 12 310 U1 and DE 291 26 245 U1. From the German utility model DE 295 12 310 U1 a series resistor and surrounding this, made of ceramic, insulation are known.
- the arrangement of series resistor and ceramic insulation is preferably circular arc-shaped and adapted to the inside of a motor housing.
- the shape and arrangement of the resistor component provide good heat transfer from the ceramic insulation to the environment via the motor housing.
- the ceramic insulation has an internal cavity which serves to receive the resistor. The cavity is accessible via an opening in the ceramic insulation, with the result that the resistor is not tightly enclosed on all sides by the ceramic insulation is.
- the ceramic insulation is relatively difficult to produce and the introduction of the resistor is associated with high production costs.
- German Utility Model DE 291 26 245 U1 discloses a resistance component in the form of a hollow cylinder segment which comprises a resistor embedded in an insulating compound. The resistor is thereby enclosed by the insulating material with the exception of the necessary electrical connections close fitting.
- the insulating compound is an organo-inorganic composite that enhances heat transfer from the insulating material to a motor housing.
- separate fasteners are necessary. Separate fasteners mean additional cost and manufacturing costs.
- the invention is therefore based on the object, a resistance component of the type mentioned in such a way that the assembly of other components, in particular on a brush bridge, is simplified. Furthermore, it should be easy and inexpensive to manufacture. Further objects of the invention are to provide a brush bridge and an electric machine with such a resistance component.
- the resistance component has at least one resistor and insulating material, wherein the insulating material comprises at least one integrally formed fastening element, wherein the same can be formed on the insulating material.
- the insulating material preferably further comprises at least one support member.
- the support member is advantageously used to receive the outer connection cable of the resistor and secure to secure. A loose arrangement of the connection cables can lead to their damage, which in turn can impair the operational readiness of the electrical machine.
- the insulating material is essentially made of ceramic, preferably of polymer ceramic.
- Polymeric ceramics are materials that have the properties of electrical insulation and thermal conductivity.
- materials other than insulating material with the stated properties such as temperature-resistant plastics.
- the insulating material and the fastening element are formed as a one-piece injection molded part.
- the insulating material, the fastening element and the support member are formed as a one-piece injection-molded part.
- Polyceramic materials are very suitable for use in injection molding.
- the resistor is overmolded with the insulating material and at the same time, ie, during one operation, the fastener and the support member is molded so that the insulating material, the fastener and the support member are integrally formed.
- the production of one-piece injection-molded parts represents a much simpler manufacturing process compared to the production of separate components with subsequent assembly.
- the production by means of injection molding allows high volumes at low cost.
- the insulating material has two integrally formed fastening elements. By means of two fastening elements, the attachment of the resistance component to the brush bridge relative to only one fastener can be made safer.
- the resistance component according to the invention has a base body on which the resistor is arranged.
- this arrangement is such that the resistor is wound around the base body, wherein the windings can be made in any direction.
- This winding technique makes it possible to arrange large amounts of resistance material in a space-saving manner.
- the resulting large resistance surface ensures low heat development of the resistor.
- notches are formed on the base body, by means of which the resistance windings are fixed to the base body, which prevents slippage of the resistance windings.
- the base body has radial openings, which improve the adhesion between the base body and injected insulating material.
- the base body is essentially made of ceramic, preferably of polymer ceramics.
- the base body can thus absorb first heat developments of the resistance due to its heat storage capacity.
- the resistor has at least one coil-like winding.
- a large resistance surface can be provided, which ensures a low heat development of the resistance.
- different resistance values can be realized.
- a suitable device different coil-like resistance windings within a resistor component, whereby also different resistance values are adjustable.
- Such a device can be, for example, an automatic switching device with processor-controlled electronic power amplifiers and integrated temperature sensors for current and / or current switching.
- the resistance component as a series resistor for setting the speed of an electric vehicle cooling fan thus different fan speeds can be realized.
- a brush bridge for an electrical machine has a resistance component according to the invention.
- the brush bridge is preferably made of plastic and designed so that it has various elements for the arrangement of the required electrical components, such as throttles or capacitors, and electrical fixed contacts.
- the brush bridge is designed such that the resistance component according to the invention is easy to assemble.
- an electrical machine has a resistance component according to the invention.
- the electric machine is a DC motor.
- the resistance component is suitable as a series resistor for single or multi-speed speed setting of the electric vehicle cooling fan.
- An electrical machine preferably has a brush bridge with a resistance component according to the invention.
- the brush bridge is preferably made of plastic and designed so that it has various elements for the arrangement of the required electrical components, such as throttles or capacitors, and electrical fixed contacts.
- the brush bridge is formed such that the resistance device according to the invention is easy to assemble.
- FIG. 1 shows a resistance component according to the invention of a first embodiment of the present invention in a plan view
- a resistor of the first embodiment is arranged on a base body of the first embodiment
- Resistor component of the first embodiment in a plan view
- Resistor component of the first embodiment in a view from below,
- Fig. 1 a brush bridge according to the invention with the invention
- Resistor component of the second embodiment in a plan view
- Resistor component of the second embodiment in a view from below.
- FIG. 1 shows a top view of a resistance component 1 according to the invention of a first embodiment of the present invention.
- the resistance component 1 has the shape of a hollow cylinder or hollow cylinder segment whose radius of curvature essentially corresponds to the radius of curvature of a jacket housing of an electrical machine.
- the insulating material 2 comprises two integrally formed fastening elements 3. By means of the two fastening elements 3, the arrangement of the resistance component 1 on a brush bridge, not shown, or an electric machine, not shown, can be done safely and without separate fasteners.
- the insulating material 2 also has two support elements 4.
- the support members 4 serve to receive external connection cable 5 and securely fix. A loose arrangement of the connection cable 5 can lead to their damage, which in turn can affect the operational readiness of the electrical machine.
- the connecting cables 5 have an electrical insulation 6 for securing against other components, not shown. With connecting elements 7, the resistance component 1 is turned on in the corresponding circuit.
- the Isoliermateriäl 2 is essentially made of ceramic,
- a resistance component 1 of the first embodiment according to the invention is shown in a view from below. It can be seen particularly well in FIG. 2 that the insulating material 2 and the fastening elements 3 are formed as a one-piece injection-molded part. With particular advantage, the insulating material 2, the fasteners 3 and the support members 4 are formed as a one-piece injection-molded part. Furthermore, the connecting cables 5, the electrical insulation 6 of the connecting cable 5 and the connecting elements 7 are shown.
- a base body 8 of the first embodiment is shown.
- notches 9 for fixing windings of a device shown in FIG. 4 can be seen.
- FIG. 4 shows the resistor 10 of the first exemplary embodiment with the connection cables 5 and the connection elements 7.
- the resistor 10 is already shaped as it is arranged on the base body 8 shown in Fig. 3.
- the resistor 10 is preferably in the form of a wire.
- the resistor 10 of the first embodiment is shown disposed on the base body 8 of the first embodiment.
- the resistor 10 is preferably wound around the base body 8. This Wickeitechnik makes it possible to arrange large amounts of the resistor 10 in a space-saving manner. The resulting large surface of the resistor 10 ensures a low heat development of the resistor.
- FIG. 6 shows a brush bridge 11 according to the invention with the resistance component 1 according to the invention of the first exemplary embodiment in a top view.
- the brush bridge 11 is preferably made of plastic.
- the resistance component 1 preferably has the shape of a hollow cylinder whose radius of curvature substantially corresponds to the radius of curvature of a jacket housing (not shown) of an electric machine (not shown).
- the resistance component 1 is applied to the jacket housing, not shown, of the electric machine, not shown, whereby a good heat transfer of the heat generated in the interior of the insulating material 2 is ensured over the jacket of the electrical machine to the environment.
- the support elements 4 take the Rabe! 5 and fix it securely.
- the connecting cables 5 have the electrical insulation 6 for protection against other components, not shown.
- FIG. 7 shows a brush bridge 11 according to the invention with the resistance component 1 according to the invention of the first exemplary embodiment in a view from below.
- the brush bridge is designed with particular advantage such that the somebodysbauelemant 1 is easy to assemble.
- the fastening elements 3 are preferably designed as plug-in elements.
- corresponding counterparts 12 with openings or recesses are provided on the brush bridge 11 into which the fastening elements 3 are inserted.
- the connector between the fasteners 3 and the counterparts 12 is particularly advantageous a detachable connection. If necessary, the resistance device 1 can be removed and another resistance device 1 attached. Further, the connector is preferably formed so that the resistance component is pressed against the inner surface of the jacket housing, not shown, of the electric machine, not shown.
- FIG. 8 shows a top view of a resistance component 21 according to the invention of a second exemplary embodiment of the present invention.
- the resistance component 21 essentially has the shape of a hollow cylinder or hollow cylinder segment whose radius of curvature substantially corresponds to the radius of curvature of a jacket housing of an electrical machine.
- the insulating material 22 further includes a support member 25 which serves to receive external connection cable 26 and securely fix.
- the connecting cables 26 have an electrical insulation 27 for securing against other components, not shown. With connection elements 28, the resistance component 21 is turned on in the corresponding circuit.
- the insulating material 22 encloses a multi-coil-wound resistance 29 shown in FIG. 10.
- the resistance 10 which is wound several times in the manner of a coil and is shown in FIG Insulating material 22 enclosed that an interior of each coil-like winding of the resistor 29 shown in Fig. 10 is maintained.
- a ventilation is ensured within the coil-like windings.
- the surface of the insulating material 22 is increased and the heat transfer from the insulating material 22 to an unillustrated jacket housing of an electric machine, not shown further improved.
- FIG. 9 shows a resistance component 21 of the second exemplary embodiment according to the invention in a view from below.
- the insulating material 22 and the fastening elements 24 are formed as a one-piece injection-molded part.
- the insulating material 22 and the fastening elements 24 and the support member 25 are formed as a one-piece injection-molded part.
- the recesses 23 on the outer radius of the resistance component 21 allow a defined air flow between the resistance component 21 and a jacket housing, not shown, of an electrical machine. This defined air flow also leads to better cooling of the entire system.
- the connection cables 26, the electrical insulation 27 of the connection cables 26 and the connection elements 28 are shown.
- FIG. 10 shows a resistor 29 of the second exemplary embodiment with the connection cables 26 and the connection elements 28.
- the resistor 29 is wound several times like a coil, wherein the individual coil-like windings of the resistor 29 are arranged in series. By means of such coil-like windings, a large resistance surface can be provided, which ensures a low heat development of the resistance.
- FIG. 11 shows a brush bridge 30 according to the invention with the resistance component 21 according to the invention of the second exemplary embodiment in a top view.
- the brush bridge 30 is preferably made of plastic.
- the Wi-Fi derstandsbauelement 21 preferably has substantially the shape of a Hohlzy- iinders whose radius of curvature substantially corresponds to the radius of curvature of a jacket housing, not shown, of an electric machine, not shown substantially.
- the resistance component 21 is applied to the jacket housing, not shown, of the electric machine, not shown, whereby a good heat transfer of the heat generated in the interior of the insulating material 22 through the jacket of the electrical machine is ensured to the environment.
- the support member 25 receives the connection cable 26 and fixes them safely.
- the connecting cables 26 have the electrical insulation 27 for securing against other components, not shown.
- FIG. 12 shows a brush bridge 30 according to the invention with the resistance component 21 according to the invention of the second exemplary embodiment in a view from below.
- the brush bridge 30 is designed with particular advantage such that the resistance component 21 is easy to assemble.
- the fastening elements 24 are preferably designed as plug-in elements.
- corresponding counterparts 31 with openings or recesses are provided on the brush bridge 30 into which the fastening elements 24 are inserted.
- the connector between the fasteners 24 and the counterparts 31 is particularly advantageous a detachable connection. If necessary, so the resistance device 21 can be removed and another resistance device 21 are attached.
- the plug connection is preferably designed such that the resistance component 21 is pressed against the inner surface of the jacket housing of the electric machine, not shown, not shown. LIST OF REFERENCE NUMBERS
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Details Of Resistors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510032394 DE102005032394A1 (en) | 2005-07-12 | 2005-07-12 | Resistor component for an electrical machine |
PCT/DE2006/001162 WO2007006270A1 (en) | 2005-07-12 | 2006-07-05 | Resistor component for an electric motor with fixing element |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1902447A1 true EP1902447A1 (en) | 2008-03-26 |
Family
ID=37216059
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06761764A Withdrawn EP1902447A1 (en) | 2005-07-12 | 2006-07-05 | Resistor component for an electric motor with fixing element |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1902447A1 (en) |
DE (1) | DE102005032394A1 (en) |
WO (1) | WO2007006270A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012010483A1 (en) | 2012-05-26 | 2013-11-28 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg | Brush system for an electric motor |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2640132A (en) * | 1951-03-27 | 1953-05-26 | Thom Melvin Arnold | Electrical resistor and method of making same |
DE974070C (en) * | 1952-07-02 | 1960-09-01 | Licentia Gmbh | Process for the production of sets of resistance coils arranged in layers |
AT186740B (en) * | 1955-02-16 | 1956-09-10 | Rosenthal Isolatoren Gmbh | Process for the production of heat-resistant insulated, in particular glazed, electrical wire resistors and resistors produced according to this |
DE1874565U (en) * | 1963-04-26 | 1963-06-27 | Rhein Westfael Isolatoren | ELECTRICAL RESISTOR EMBEDDED IN AN ENCLOSURE. |
CH545060A (en) * | 1972-04-18 | 1973-11-30 | Siemens Ag Albis | Electrical component with a plastic carrier |
US3760323A (en) * | 1972-09-25 | 1973-09-18 | Continental Wirt Electronic | Insulated wire wound resistor |
US4038628A (en) * | 1976-06-21 | 1977-07-26 | Westinghouse Electric Corporation | Electric resistor |
DE8028913U1 (en) * | 1980-10-30 | 1981-02-26 | Hofsaess, Peter, 7530 Pforzheim | Electrical component with an insulation jacket |
GB2161327A (en) * | 1984-07-03 | 1986-01-08 | Dale Electronics | Laser trimmed plate resistor |
US4807488A (en) * | 1987-09-03 | 1989-02-28 | Carrier Corporation | Adjustable coil retainer and spreader and method of use |
DE29512310U1 (en) * | 1995-07-31 | 1996-12-05 | Vogt Gmbh Ceramic Components | Arrangement of a series resistor and a ceramic insulation surrounding it |
DE20117245U1 (en) * | 2001-10-20 | 2002-01-17 | Hermsdorfer Inst Tech Keramik | resistance component |
-
2005
- 2005-07-12 DE DE200510032394 patent/DE102005032394A1/en not_active Withdrawn
-
2006
- 2006-07-05 WO PCT/DE2006/001162 patent/WO2007006270A1/en active Application Filing
- 2006-07-05 EP EP06761764A patent/EP1902447A1/en not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2007006270A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102005032394A1 (en) | 2007-01-18 |
WO2007006270A1 (en) | 2007-01-18 |
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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 |
|
17P | Request for examination filed |
Effective date: 20070613 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR |
|
DAX | Request for extension of the european patent (deleted) | ||
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: GETTA, UDO Inventor name: STAHR, HEIKO Inventor name: GASS, ALEXANDER |
|
17Q | First examination report despatched |
Effective date: 20080619 |
|
DAX | Request for extension of the european patent (deleted) | ||
RBV | Designated contracting states (corrected) |
Designated state(s): DE FR |
|
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: 20081230 |