DE20321828U1 - Wiring element for an electric motor - Google Patents

Abstract

Wiring element (1) for supplying power to an electric motor, which has a three-dimensional molded conductor element (2) and a plastic sheath (3) of the conductor element (2) and carries at least two carbon brushes (4) for powering a commutator of the electric motor, wherein the Beschaltungselement (1 ) is modularly connected to a holding part (5) of the electric motor and at least one clip portion (9) for clip connection with the holding part (5) of the electric motor and / or at least one ultrasonic welding section (11) for ultrasonic welding connection with the holding part (5) of the electric motor aufweißt.

Description

The The invention relates to a wiring element for supplying power to a Electric motor and a corresponding electric motor.

For electric drives, that is electric motors, which For example, as sunroof motors in the automotive industry manufactured and installed, it is generally necessary that Such electric motors or their rotating parts reliable be powered. This is generally done via Carbon brush plates, which is the power supply of a ensure appropriate commutator of electric motors. Depending on the application, especially in the case of use in a vehicle, additional suppression components provided which electrically suppress corresponding electric motors. Generally requires both the conception of power supply and the Arrangement of suppression relatively high design effort. In particular, appropriate power supply and / or Suppressor components individually installed on each Be matched with electric motor types. Also, one is possible Stable construction required especially in the automotive industry.

From the US patent US 4,593,220 a carbon brush carrier unit for electric motors is known, which is substantially U-shaped, so that a specially matched commutator of an electric motor can be accommodated there in the U-shaped recess. A relatively filigree executed circuit pattern is applied to this unit and provides the conduction path for the power supply of the electric motor. About coal brushes, the current then reaches the commutator of the actual electric motor. However, the known from the aforementioned US Patent, essentially newly trained assembly, which is tuned individually to the respective engine, but of relatively complicated construction, is relatively delicate and does not fulfill any other maintenance tasks for the engine.

It is the object of the present invention, the disadvantages of the prior art overcome the art and in particular a wiring element for Power supply to an electric motor and a corresponding electric motor provide which / which is inexpensive to produce and at the same time with a simple assembly a largely standardized Construction and high stability allows.

The The object is achieved by a wiring element for supplying power to an electric motor according to claim 1 or a corresponding electric motor according to claim 10th

preferred Embodiments of the invention are in the subclaims Are defined.

According to the invention the wiring element for supplying power to an electric motor is a three-dimensional molded conductor element on and a plastic sheath this Conductor element. Furthermore, at least two carbon brushes provided for the power supply of a commutator of the electric motor, which with the conductor element according to the invention be in electrical connection. The wiring element is modular according to the invention connectable to a holding part of the electric motor. It can do that Holding part directly be part of the electric motor itself or it may be a carrier part for attaching the actual Electric motor act. The wiring element according to the invention may preferably have standardized power connections, which both in terms of their geometric arrangement as well are standardized in terms of electrical connection values and also when using different electric motors as an interface towards the electrical leads, for example of the wiring harness in a vehicle, kept unchanged can be.

By the inventive design of the Beschaltungselements is the design effort for the power supply to a Electric motor is reduced, even if different types of electric motors Should be used, furthermore, the assembly is simplified, what in total in the field of industrial production and Assembly leads to significant cost savings. So can For example, a specific base engine are mounted on which then at the end of the assembly line only a specifically according to the invention modular designed Beschaltungselement with conductor element and plastic coating is placed in order to allow the power supply to the electric motor. In the Beschaltungselement invention are then the conductor element together with the carbon brushes in the Plastic coating integrated, so that also an additional Holding function of the electric motor through modular interaction with the Holding part of the electric motor and the invention Beschaltungselement can be achieved. Through the plastic coating also increases the stability of the Beschaltungselements or the entire arrangement Beschaltungselement-electric motor achieved according to the invention.

According to a preferred embodiment of the Beschaltungselements invention, the conductor element may be modularly connected to suppression components, preferably consisting of at least one choke coil and / or at least one capacitor, preferably consisting of two choke coils and / or two capacitors. Also an embodiment of the Beschaltungselements invention is preferred in which the conductor element additionally comprises a thermal switch, which can serve for thermal protection of the electric motor. Thus, a customized, tailored to the particular application suppression of the electric motor can be achieved in a particularly simple manner, for different requirements, that is, for different types of electric motors and / or suppression specifications, only different modular wiring elements must be provided. In addition to the ease of installation, for example at the end of an assembly line, such a circuit element according to the invention can also be produced inexpensively.

Especially can be produced inexpensively according to the invention Beschaltungselement, in which according to a preferred Embodiment of the invention, the conductor element by punching, three-dimensional In-mold bending and, if necessary, removal of webs between the contacts of the conductor element with the associated suppression components can be produced. The plastic coating can then, for example by corresponding encapsulation of the thus designed conductor element be provided. The conductor element can be made of sheet metal or metal be punched out of a metal alloy.

to especially easy assembly, and a good extra Holding effect for the electric motor and an improved To ensure stability, the wiring element has according to a preferred embodiment the invention at least one clip section on the clip connection with the holding part of the electric motor. Thus, by simple Clip on a secure connection of the invention Beschaltungselements with the electric motor or with its holding part be given. According to another preferred Embodiment, the inventive Beschaltungselement have at least one rivet section for riveting with the holding part of the electric motor. This can be a special secure and permanent connection can be realized.

According to one Still another preferred embodiment of the invention Beschaltungselements this can at least one ultrasonic welding section have, with which an ultrasonic weld can be made with the holding part of the electric motor. This increases stability in addition and Nevertheless, a not particularly complex and thus cost-effective, because simple, mounting option.

According to one preferred embodiment of the invention, the inventive Beschaltungselement be provided with tipping hooks over which the carbon brushes on the Beschaltungselement solvable are fastened. Thus, a simple exchange of in operation worn carbon brushes possible, if necessary to change the entire wiring element or without the complete electric motor assembly with the invention Disassemble the wiring element. This is special inexpensive. The tilting hook is stuck by a corresponding Clamp the carbon brush and take care of a safe contact of the carbon brush with the corresponding Conductor element.

Generally the carbon brushes can be resiliently mounted, thus a secure conductor connection between the conductor element and To ensure commutator of the electric motor.

The The invention further relates to an electric motor, which with a Beschaltungselement of the type described above is provided, wherein Wiring element and electric motor adapted to each other accordingly are.

The The invention will be described below by way of example with reference to the attached Drawing will be described in more detail.

It demonstrate:

1 a perspective view of an embodiment of the Beschaltungselements invention before connection to a holding part of an electric motor;

2 , a perspective view of the Beschaltungselements the 1 in the assembled state with a holding part of an electric motor;

3 a perspective, partially cutaway view of a Beschaltungselements according to an embodiment of the present invention;

4 a perspective view of another embodiment of the Beschaltungselements invention;

5 a perspective view of an embodiment of the Beschaltungselements invention, which substantially according to the embodiment according to 1 corresponds;

6 a perspective view of yet another embodiment of the Beschaltungselements invention; and

7 a perspective view still ei ner additional embodiment of the Beschaltungselements invention.

1 shows a perspective view of an embodiment of a Beschaltungselements invention 1 for supplying power to an electric motor (not shown) prior to connection to a retaining member 5 of the electric motor. The holding part 5 is executed in this case as an independent support member for fixing the actual engine, wherein the actual engine in 1 not shown. The holding part 5 but could also be part of the electric motor itself. the wiring element 1 has a three-dimensionally shaped conductor element, which in the view in 1 not visible, as it is there by a plastic coating 3 of the wiring element 1 is covered, or of this plastic sheath 3 is surrounded. The wiring element 1 has carbon brushes 4 on, which ensure the power supply to the electric motor, not shown. As suppression components are two inductors 6 as well as a capacitor 7 intended. Also a thermal switch (in 1 not shown) can be used as part of the Beschaltungselements invention 1 be provided. The wiring element 1 according to 1 has two rivet sections 10 to rivet connection with the holding part 5 of the electric motor. The rivet connection is riveted by 13 made, which through corresponding openings in the holding part 5 and through the rivet section 10 of the wiring element -1 according to the in 1 shown preferred embodiment of the invention out and riveted accordingly. Through the wiring element 1 According to the invention, a simple and inexpensive installation of an electric motor can be achieved. In particular, by the modular design of the holding part 5 be ensured that preferably standard power connections for the power supply to the electric motor are possible. The standard power connections of the conductor element 1 of the wiring element 1 are in 1 (as in the other figures) shown as square connection plates. The wiring element according to the invention 1 can at the end of an assembly line after installation of the actual electric motor in its holding part 5 Simply connected to the corresponding holding part of the electric motor and thus the power supply and / or interference suppression, individually to the electric motor used, provide in a simple manner.

2 shows the wiring element 1 of the 1 in one with the holding part 5 of the electric motor (also in 2 not shown) connected state. The connection is made by rivets 13 which pass through corresponding openings of the holding part 5 and the rivet sections 10 of the wiring element 1 are guided.

3 shows in a partially cutaway view a representation of an embodiment of the Beschaltungselements invention 1 , Good to see here is the three-dimensionally shaped ladder element 2 , which may preferably consist of a metal or a metal alloy. The plastic casing 3 is in 3 reproduced as a bright shadow. Good to see is that the conductor element 2 provides standardized power connections in the form of quadrangular connection plates for supplying power to the wiring element and thus to the electric motor. The terminal plates can, as shown in the figures, an integral part of the conductor element 2 be. 3 also shows an assembly of the Beschaltungselements invention with suppression components. You can see choke coils 6 as well as a capacitor 7 , The bridges 8th of the conductor element 2 , what a 3 are still shown for illustration, are actually removed, otherwise they would short-circuit the contacts of the respective suppression components with the conductor element. Good to see in 3 the resilient mounting of the carbon brushes 4 via coil springs, which ensure the power supply to the commutator of the electric motor.

4 shows a further preferred embodiment of the Beschaltungselements invention in a perspective plan view. According to the in 4 shown embodiment of the Beschaltungselements invention 1 has this tipping hook 12 on, with which the carbon brushes 4 on the wiring element 1 are releasably fastened. By pulling up the tipping hooks 12 at their formed on the top "noses" is the corresponding carbon brush 4 released and can be pulled out and replaced if wear is present. In 4 You can also see the standardized connections of the conductor element 2 for power supply and a choke coil 6 the suppression components.

5 shows a preferred embodiment of the inventive Beschaltungselements 1 which substantially corresponds to the embodiment as already described in 1 is shown in perspective plan view.

In 5 good to see is at least one rivet section 10 , which preferably in the plastic casing 3 of the wiring element 1 is present, which is a rivet connection with the holding part 5 of the electric motor (in 5 not shown) over a rivet 13 allows. In the embodiment according to 5 are each left front and right rear two such rivet sections 10 intended. As in the other figures, the remaining same reference numerals designate like elements.

6 shows a perspective top view a still further embodiment of the Beschaltungselements 1 of the present invention. In the embodiment according to 6 has the plastic casing 3 of the wiring element 1 left and right one clip section each 9 on, with which a clip connection to the holding part of the electric motor (not shown) can be made. The clip connection is done in a conventional manner and will therefore not be described in detail here.

7 shows yet an additional, further embodiment of the Beschaltungselements invention 1 in a perspective plan view. In the embodiment according to 7 has the wiring element 1 on his plastic jacket 3 two ultrasonic welding sections 11 on, with which an ultrasonic welding connection can be made with the holding part of the electric motor. Holding part and electric motor are in 7 not shown for reasons of clarity. The material of the plastic casing 3 in the area of an ultrasonic welding section 11 is thereby deformed by ultrasonic welding and establishes a corresponding connection with the corresponding holding part of the electric motor.

It It should be noted that in general the embodiments, such as they are exemplified in the figures, on the one hand easy installation and also a cost-effective design from a generally flexible usable Beschaltungselement high Provide stability according to the invention. According to the plastic casing, for example also a simple adaptability in terms of shaping be used differently to use electric motors, which at the same time an additional holding effect for different electric motors can be easily realized. The structure of the invention thus allows a stable, simple and modular design of inventive Wiring element or electric motor.

1

snubber

2

conductor element

3

Plastic sheathing

4

carbon brush

5

holding part

6

inductor

7

capacitor

8th

web

9

clip section

10

rivet

11

Ultrasonic welding portion

12

Toggle Clasp

13

rivet

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - US 4593220 [0003]

Claims (10)

Wiring element ( 1 ) for supplying power to an electric motor which comprises a three-dimensional molded conductor element ( 2 ) and a plastic casing ( 3 ) of the conductor element ( 2 ) and at least two carbon brushes ( 4 ) for supplying power to a commutator of the electric motor, wherein the wiring element ( 1 ) modular with a holding part ( 5 ) of the electric motor is connectable and at least one clip section ( 9 ) for clip connection with the holding part ( 5 ) of the electric motor and / or at least one ultrasonic welding section ( 11 ) for ultrasonic welding connection with the holding part ( 5 ) of the electric motor. Wiring element ( 1 ) for supplying power to an electric motor which comprises a three-dimensional molded conductor element ( 2 ) and a plastic casing ( 3 ) of the conductor element ( 2 ) and at least two carbon brushes ( 4 ) for supplying power to a commutator of the electric motor, wherein the wiring element ( 1 ) modular with a holding part ( 5 ) of the electric motor is connectable, and wherein the conductor element at least one capacitor ( 7 ) and / or a thermal switch welißt. A wiring element according to claim 1 and claim 2. Wiring element ( 1 ) according to one of claims 1 to 3, wherein the conductor element ( 2 ) is connected modularly with suppressor components, preferably consisting of at least one choke coil ( 6 ) and / or at least one capacitor ( 7 ), preferably consisting of two inductors ( 6 ) and / or two capacitors ( 7 ). Wiring element ( 1 ) according to one of claims 1 to 4, wherein the conductor element ( 2 ) by punching, three-dimensional in-mold bending and removal of webs ( 8th ) between the contacts of the conductor element ( 2 ) can be produced with the associated suppression components. Wiring element ( 1 ) according to one of claims 1 to 5, wherein the wiring element ( 1 ) at least two distinct clip sections ( 9 ) for clip connection with the holding part ( 5 ) of the electric motor. Wiring element ( 1 ) according to one of claims 1 to 5, wherein the wiring element ( 1 ) at least one rivet section ( 10 ) for riveting connection with the holding part ( 5 ) of the electric motor. Wiring element ( 1 ) according to one of claims 1 to 5, wherein the wiring element ( 1 ) at least two distinct ultrasonic welding sections ( 11 ) for ultrasonic welding connection with the holding part ( 5 ) of the electric motor. Wiring element ( 1 ) according to one of claims 1 to 8, wherein the carbon brushes ( 4 ) via tipping hooks ( 12 ) on the wiring element ( 1 ) are releasably attachable. Electric motor, which with a wiring element ( 1 ) according to any one of claims 1 to 9, this wiring element ( 1 ) is adapted to the electric motor.