DE102007037900A1 - Brush system for fan i.e. radiator fan, application, has electrical connecting unit including multiple massive wire pieces that are contacted with electrical connecting cable at cable contact point of brush plate - Google Patents

Abstract

The system has two carbon brushes (5) positioned on two carbon brush carriers i.e. brush receptacles (2), respectively. An electrical connecting unit includes multiple massive wire pieces (4) that are contacted with an electrical connecting cable (7) at a cable contact point of a brush plate (1). The massive wire pieces are electrically contacted with the carbon brushes and inductance coils (3) through weld points. A temperature protective unit (9) is fastened to the brush plate. The brush plate forms a plastic molded part in combination with limiting walls and a clamp unit.

Description

The The invention relates to a brush system which, in particular is intended for fan applications.

It Brush systems are already known which a brush plate, Carbon brush holder with or attached to it Carbon brushes, inductors and electrical connection means exhibit. As electrical connection means are in the known Brush systems, for example, punched grids, internally routed Cable sets, strands or fork contacts used.

From the EP 1 564 850 B1 is a particular provided for a radiator fan motor brush plate is known, which has a brush shaft for receiving a carbon brush with carbon brush cable. The brush shaft has in its front region an opening for the axial insertion of the carbon brush cable and a lateral recess for the radial displacement of the carbon brush cable. The carbon brush cable is laid for contacting the carbon brush with the choke coil outside the brush shaft substantially parallel to the brush plate.

The The object of the invention is a brush system in which the brush contacting improves is.

These Task is by a brush system with the in the claim 1 specified characteristics solved. Advantageous embodiments and further developments of the invention are in the dependent Claims specified.

The Advantages of the invention are in particular that the necessary electrical contacts within a brush system with simple handling steps and in less expensive Way can be realized. It must be single Lich one or more cut solid wire pieces, which may be preformed, introduced into the system become.

A Use of solid wire as an electrical connection means has Furthermore, the advantage that even later on any Place the solid wire in a simple way an additional electrical Component, such as a sensor or a capacitor in the System can be integrated to the functionality of the system to expand. This requires no removal of insulation, as in the case of using wire harnesses the case would be.

A Use of solid wire as an electrical connection means has also the advantage that because of compared to a use of strands or brush ropes higher rigidity of the solid wire only comparatively few fixing points in the system necessary to the solid wire piece or the solid wire pieces in the desired manner in the system to position.

Of the Scope of the brush system can easily For example, be extended by a temperature protection element, d. H. a temperature monitor, is integrated into the system.

Preferably is the brush plate with wire guide tracks provided in which the solid wire pieces according to the Invention are used. These wire guide tracks have Clamping means, by means of which the respective solid wire piece in the wire guide track and thus in the brush system in a desired positioning sufficiently recorded becomes.

Preferably forms the brush plate together with the walls the wire guide tracks and said clamping means a one-piece plastic molding, which in a simple Way be made by means of a plastic injection molding process can.

Further advantageous features of the invention will become apparent from the explanation an embodiment of the figures. It shows

1 a view of a brush system from the top,

2 a view of the in the 1 shown brush system from the bottom and

3 an enlarged section of 2 ,

That in the 1 and 2 brush system shown is particularly intended for fan applications. It has a plastic brush plate 1 on, on or on which the other components of the brush system are attached.

These other components of the brush system include two as a brush quiver 2 realized carbon brush holder. In each of these brush quivers is a carbon brush 5 Positioned by a spring 6 is pressed inward in the radial direction.

Other components of the brush system also include two inductors 3 which have anti-interference function. Each of these inductors 3 is with an associated carbon brush 5 electrical contacted. For this purpose is on the carbon brushes 5 one short brush rope each 8th attached, which through a lateral opening of the respective brush holder 2 led to the outside. The tail of this short brush rope 8th is by means of a welding point with a connection of the choke coil 3 connected. The other connection of the choke coil 3 is with a solid wire piece 4 electrically contacted.

The Solid wire piece or have the solid wire pieces the task, the necessary contacts of the components of the brush system bring about.

Furthermore, this has in the 1 and 2 shown brush system suppression capacitors 10 . 11 and 12 , which also each have a solid wire piece 4 with the carbon brushes 5 and the choke coils 3 electrically contacted, and a temperature protection element 9 on.

The electrical external contact of the brush system is done using an electrical connection cable 7 , which from the outside to a cable contact point 14 the brush plate 1 is guided and there with the or the solid wire pieces 4 the brush system is electrically contacted.

For easy attachment of the solid wire or pieces 4 at desired positions in the brush system has the brush plate 1 Wire guideways 15 on. Each of these wire guideways has two of the brush plate 1 at right angles projecting and parallel boundary walls 16 on, between which the respective piece of wire 4 runs. An example of such a wire guide track is in 3 shown in which a section of 2 is shown enlarged.

At the mutually facing inner sides of the boundary walls 16 are each clamping means 17 provided, which are material protrusions. These clamping means are provided at each boundary wall spaced from each other. Furthermore, the clamping means 17 the two boundary walls 16 a wire guide track in the longitudinal direction of this wire guide path alternately and spaced apart. This allows a simple and quick impressions of a solid wire piece 4 into the respective wire guide track and ensures that the solid wire piece is held sufficiently firmly in the wire guide track. Furthermore, if required, a solid wire piece can also be removed from a wire guide track quickly and easily.

The brush plate 1 , the boundary walls 16 and the clamping means 17 form advantageously a one-piece plastic molded part, which can be produced by means of a plastic injection molding process.

To All this, the invention provides a brush system, in which the necessary electrical contacts between Carbon brushes, suppression chokes, other electrical Components and an external connection cable using Solid wire are realized as an electrical conductor. This solid wire can be in the form of a single piece of solid wire, which within the brush system with the necessary bends is provided, or in the form of several solid wire pieces. The electrical connection of the respective component with the solid wire piece via welding points. The leadership of the solid wire or pieces in the region of the brush plate is done using wire guideways that the Solid wire at desired positions of the brush plate fix. The guideways have boundary walls and clamping means, which fix the solid wire in the respective Ensure guideway.

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

• EP 1564850 B1 [0003]

Claims (10)

Brush system with - a brush plate ( 1 ), - at least two carbon brush holders ( 2 ), - at least two carbon brushes ( 5 ), each of which on or in one of the brushes ( 2 ), - at least two reactors ( 3 ) and electrical connection means ( 4 ), characterized in that - the electrical connection means ( 4 ) have one or more solid wire pieces. Brush system according to claim 1, characterized in that the brush plate ( 1 ) a cable contact point ( 14 ), on which a solid wire piece ( 4 ) with an electrical connection cable ( 7 ) is contacted. Brush system according to claim 1 or 2, characterized in that the solid wire pieces ( 4 ) with the carbon brushes ( 5 ) and the choke coils ( 3 ) are electrically contacted via welding points. Brush system according to one of the preceding claims, characterized in that the brush plate ( 1 ) a temperature protection element attached to it ( 9 ) having. Brush system according to one of the preceding claims, characterized in that the brush plate ( 1 ) Wire guide tracks ( 15 ) having. Brush system according to claim 5, characterized in that a wire guide track ( 15 ) from the brush plate ( 1 ) projecting at right angles and parallel to each other boundary walls ( 16 ), which on their mutually facing inner sides with clamping means ( 17 ) are provided. Brush system according to claim 6, characterized in that each of the boundary walls ( 16 ) spaced apart clamping means ( 17 ) having. Brush system according to claim 7, characterized in that the clamping means ( 17 ) of the two boundary walls ( 16 ) a wire guide track ( 15 ) are arranged alternately and spaced apart in the longitudinal direction of the wire guide track. Brush system according to one of the preceding claims, characterized in that the brush plate ( 1 ) together with the boundary walls ( 15 ) and the clamping means ( 17 ) forms a one-piece plastic molding. Brush system according to one of the preceding claims, characterized in that it is connected to the solid wire pieces ( 4 ) via welding points electrically contacted suppression capacitors ( 10 . 11 . 12 ) having.