Drum brake with postponed fitting of the mechanical control cable

• Main Author: MALIGNE; JEANARLES
• Format: Patent
• Language: English
• Published: 04.12.1990
• Subjects: BLASTING; BRAKES; CLUTCHES; COUPLINGS FOR TRANSMITTING ROTATION; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

The invention relates to a drum brake with two shoes, each having a web (16) and a rim (18), of which the face confronting the drum receives a friction lining (20). The drum brake is arranged on a supporting plate (10) and also includes a mechanical control lever (34) comprising a body of considerable length and of small thickness in relation to its width, the body having, at a first end (36), an orifice (38) intended for receiving an articulated connection with the web (16) of one of the shoes (14) at an intermediate point near the orifice, and a notch intended for interacting with a spacer (62) making it possible to subject the shoes (12, 14) to a stress moving them away from one another, and at the second end (40), a fastening point for an actuating cable (54) of the lever. The cable is equipped with a ferrule (60) at its end interacting with the lever. According to the invention, that face of the body confronting the web (16) is substantially plane between the first end (36) and an intermediate point (42) near the second end; at this latter point (42), the body is bent so as to define a part (44) diverging substantially from the web (16), the fastening point (48) being formed by bending the end part (46) of the second end (40) in such a way that it comes to rest between the web (16) and the part (44) diverging substantially from the web, all this in such a way that, between substantially the intermediate point (42) near the second end and the latter (40), the divergence between the web (16) and that part of the body confronting the web is substantially greater than the diameter of the cable (54 ) and less than that of the ferrule (60).