초록 ▼

An automatic brake lever (1) with a built-in slack adjuster is intended for transmitting brake force from a brake cylinder and is mounted on a brake actuating cam shaft (2). For the purpose of accomplishing a wear indicating device, a coded disc (10) is connected to the cam shaft, whereas a housing

An automatic brake lever (1) with a built-in slack adjuster is intended for transmitting brake force from a brake cylinder and is mounted on a brake actuating cam shaft (2). For the purpose of accomplishing a wear indicating device, a coded disc (10) is connected to the cam shaft, whereas a housing (9, 11) therefore is connected to the brake lever or a fix-point for the lever. The coded disc is provided with a number of coded paths of circular shape, magnetic areas of equal length being provided in each coded path. A number of hall-elements (15) corresponding to the number of coded paths are provided in the cover (11) of the housing, each hall-element being arranged to sense the magnetic areas in the respective coded path. The signals from the hall-elements together indicate the relative position between the disc and the cover.

대표청구항 ▼

[ What is claimed is:] [1.] A device capable of indicating wear of brake linings in a vehicle brake, such vehicle brake being actuated by an automatic brake lever having a built-in brake adjuster, such automatic brake lever being capable of transmitting brake force from a brake cylinder and being mo

[ What is claimed is:] [1.] A device capable of indicating wear of brake linings in a vehicle brake, such vehicle brake being actuated by an automatic brake lever having a built-in brake adjuster, such automatic brake lever being capable of transmitting brake force from a brake cylinder and being mounted on a brake actuating cam shaft, said device comprising a single coded disc, on its surface being divided into a number of equally large circle sectors, having at least one coded path, shaped as a circle segment, with equally long magnetic areas in each sector, the magnetic areas being of different lengths in the different coded paths, and that a hall-element is provided in a part adjacent to and on one side of the coded disc for sensing each coded path, the coded disc and said part being rotationally arranged in relation to each other.