CS209081B1 - Free slide in armature of carbon brush with mechanical securing against falling out - Google Patents

Description

českqsiIoi / SOCIALIST DESCRIPTION OF THE INVENTION 209081 R E P U B L 1 (19) C A CERTIFICATE OF CERTIFICATE (11) (Bl) (22) Enrolled 10 09 79 (21) (PV 6118-79) (51) Int. Cl.3 H 01 R 39/26 H 01 R 39/27 OFFICE AND DISCOVERY (40) Published 31 10 80 (45) Published 01 07 83 (75)

Author of the invention LEGÉ GUSTAV, MICHALIČKA JOZEF and KRCHO MICHAL mg., TO-POLČANY (54) Loose plug-in fitting of carbon brush with mechanical anti-fall protection

SUMMARY OF THE INVENTION The present invention relates to a loose plug-in fitting of a carbon brush with mechanical anti-fall protection, made of plastic, which is pushed through the hole of the spring washer into the opening of the block or split carbon brush by mechanical pin, which is mechanically secured against being loosened by a spring washer.

So far known carbon brush fittings consist of separate spring washers being pulled onto the carbon brush feed cables, possibly having elastic pads in combination with metal material washers or artificial material. The fixing of the metal washers is done by rivets and the fastening of the washers is made either by gluing or threading the carbon brush strand. The plastic armature mat is in some cases provided with thin thin studs that pass through the openings of the flexible mat into the holes in the carbon brush, the mat being fixed against falling out directly on the brush strands. These fittings have the disadvantage of being fastened to the lances, whereby the plastic washer disrupts the vibration of the brushes on the electrical machines and leads. In addition, the multi-pin washer is technologically and technologically difficult. Technological problems are also in the manufacture of glued fittings.

Metal washer fittings have less damp and damping properties. The self-resilient spring washer is missing a plastic backing.

The abovementioned drawbacks are eliminated by the armature of the plastic with one pin provided with two cuts in the upper part of the pin. The fitting pin is pushed through the hole in the spring washer into the carbon brush hole, with the widened edges of the open-end washer engaging the cutouts in the pinch. The spring washer is threaded through the holes on the carbon brush wire. In this way, a mechanical securing of the plastic fitting with a flexible pad against falling out is achieved and at the same time it ensures stabilization of the entire fitting with the carbon brush. Installing a carbon brush with an armature on an electric tool, especially in vibration, can not damage the plastic brushes mechanically and does not move out of the edge and brushes, thus preventing the carbon brush from functioning, while at the same time making use of all the flexible mechanical properties of the carbon brush fittings on the electrical machine.

Figures 1, 2 and 3 show an example of a loose fitting with mechanical anti-fall protection. Washer 1 of 209081

Claims (3)

209081 of a conductive mass with a pin 2 having two cut-outs 3 pushed through an opening 4 with the widened edges 9 of the elastic pad 5 into the cut-outs of the carbon brush 6, wherein the object A loose plug-in fitting of a carbon brush with a mechanical anti-fall protection device, characterized in that the non-conductive pad (1) has a plunger (2) provided with at least one cut-out (3), which engages the widened edge (9) of the opening (4). ) a spring washer (5). 2. The free-plugged carbon brush fitting of item 1, characterized in that the washer pin (2) of the feeder cord 7 passes through the holes 8 of the elastic pad 5. The invention (1) is inserted through the bore (4) of the spring washer (5) into the bore they pass through the openings (8) of the spring washer (5) in the carbon brush (6) and the lead wires (7) of the carbon brush (6). 3. A free-standing carbon brush plug fitting point 1, characterized in that the top surface of the pad (1) is planar or shaped. 3 drawings