DE7037863U - COAL BRUSH BRACKET - Google Patents

Description

Licentia

Patent-Verwaltungs-GmbH

6 Frankfurt / M., Theodor-Stern-Kai 1

FST (FEW) 70/15 - Wß Frankfurt, October 12, 1970

PT-FST / Wß / de

Carbon brush holder

The innovation relates to a carbon brush holder for electrical machines, especially in housings for power tools, consisting of a plate-shaped carrier made of insulating material or metal and a brush holder attached to this.

A carbon brush holder for small electrical machines is already known (DT-GM 1 796 789), which consists of an insulating support plate and two metal guide parts attached to this for the two carbon brushes. The Isolierstofftragplatte two through holes, by means of which the plate is fixed in the housing.

It has been found, however, that it is particularly in Power tools with limited space was not possible, for example with so-called mittens, where the There is a requirement to keep the dimensions of the housing as small as possible, the carbon brush holder in the housing in such a way that the housing dimensions are not affected.

stay sighted.

To enable this, renewal proposed in accordance with that in the housing halves of a two shells MASC-hineriKehäuses perpendicular to Trermebene and above and - \ rnt.e ~ r lialb the collector outside diameter arranged grooves receive the brush holder, wherein after further feature, the grooves can be arranged for receiving a brush holder carrier in different or in each case half of the housing.

The exemplary embodiments shown in the drawing serve to explain the innovation in more detail.

1 shows one consisting of two shell halves 1 and 2

Machine housing in cross-section, specifically in the area of the collector 3 *, the parting plane 4 · of the two shell halves coinciding with the collector center line. ^{In each shell half 1, 2, grooves 1 ', 1 ·· and 2 1} , 2 ¹¹ are now perpendicular to the parting plane 4 and above and below the outer collector diameter 3, the grooves 1 ¹ and 2 ¹ the brush holder carrier 5 and the Grooves 1 '' and 2 '' accommodate the brush holder carrier 6.

The brush holder supports consist of plate-shaped supports to which the brush holders 5 ¹ and 6 'are attached by caulking or riveting. The connection of the connection line to be connected to the carbon brush in question can take place via a screw terminal 7 or via a connection lug S arranged on the brush holder support, see FIG. 3a. The assembly or installation of the bracket is now done in the following way: ^{the brush holder supports 5 and 6 are inserted into the grooves 2 1} and 2 ″ of the shell half 2, which has already been completed with the other motor parts. Then the other half of the housing 1 (cover) is placed in such a way that the brush holder supports 5 and 6 can engage in the grooves 1 'and 1''.

In order to ensure that it is easy to intervene, follow Another characteristic of the innovation is the brush holder carrier with lead-in bevels 9 (Fig. 3 b) and the grooves 1 ' and 1 ″ provided with lead-in bevels 10.

Fig. 2 shows a further embodiment of the innovation, in which the grooves 11 '(12 *) for receiving a brush holder carrier 5 (6) are each located in a shell half 11 (12).

The advantages achieved with the innovation are in particular that a carbon brush holder can be achieved by simple measures is achieved, which does not require any dimensional or design changes in terms of the housing shape and beyond a separate replacement of the brush holder carrier and the coals guaranteed, without this the magnet body and the Anchors must be removed from one half of the shell.

Claims (4)

Licentia Patent-Verwaltungs-GmbH 6 Frankfurt / M., Theodor-Stern-Kai 1 FST (FEW) 70/15 - Vß Frankfurt, October 12, 1970 PT-FST / Wß / de Sc ^ utzrechte 1. Carbon brush holder for electrical machines, especially in housings for power tools, consisting of a plate-shaped carrier made of insulating material or metal and to one. this attached brush holder, characterized that in the housing halves (1, 2; 11, 12) one of two Shells of the existing machine housing perpendicular to the parting plane (4-) as well as above and below the outer collector diameter (3) arranged grooves (1 ', 1 ", 2', 2"; 11 ·, 12 ') take up the brush holder supports (5, β). 2. Carbon brush holder according to claim 1, characterized in that the grooves (1 ·, 2 ¹ ; 1 ¹¹ , 2 ¹¹ ) for receiving a brush holder carrier (5, 6) are arranged in different housing halves (1, 2). -2- 3. Carbon brushes long after. Claim 1, characterized in that that the grooves (11 ': 12 *) for receiving a brush holder carrier (5; 6) each arranged in a housing half (11; 12) are. 4. Carbon brush holder according to claim 1, characterized in that that the brush holder carrier (5, 6) has a connecting lug (8) for has the connection line to be connected to the carbon brush in question. 5 · Carbon brush holder according to claims 1, 2 and 4, characterized in that the brush holder supports (5 »6) and the grooves (1 ·, I ¹¹ ) of a housing half (1) (cover) are provided with bevels (9, 10) .