Automatic slack adjuster for braking systems of automotive vehicles, braking system and corresponding wheels

An automatic slack adjuster (1, 101, 201) for a braking system of an automotive vehicle, the automatic slack adjuster comprising:

• a lever (3, 103, 203) configured to be operatively coupled to a push rod of a brake actuator,
• wherein the lever pivots about a rotational axis (R) when actuated by the push rod (117, 217), the rotational axis (R) having a predetermined fixed location relative to the vehicle,
• wherein a stroke level of the slack adjuster (1, 101, 201) is moveable between a predetermined zero stroke position (7a, 107a, 207a) and a working stroke range (7b), and
• an electronic detection unit (9, 109, 209) that determines a current stroke level of the automatic slack adjuster (1, 101, 201), wherein the electronic detection unit (109) comprises:
• a link (119) that is pivotably coupled to the lever (103) and abuts against a push rod (117) that is operatively coupled to the lever and that actuates lever, and
• a sensor arrangement (113) arranged at the lever (103),
• wherein the sensor arrangement (113) determines a relative angle (121) between the link (119) and the lever (103) that is indicative of a current stroke level of the automatic slack adjuster (101);
• wherein the link (119) includes a spring element (125) that forces the link (119) against the push rod (117).

An automatic slack adjuster (1, 101, 201) for a braking system of an automotive vehicle, the automatic slack adjuster comprising:

• a lever (3, 103, 203) configured to be operatively coupled to a push rod of a brake actuator,
• wherein the lever pivots about a rotational axis (R) when actuated by the push rod (117, 217), the rotational axis (R) having a predetermined fixed location relative to the vehicle,
• wherein a stroke level of the slack adjuster (1, 101, 201) is moveable between a predetermined zero stroke position (7a, 107a, 207a) and a working stroke range (7b), and an electronic detection unit (9, 109, 209) that determines a current stroke level of the automatic slack adjuster (1, 101, 201)
• wherein the electronic detection unit (209) comprises:
• a first link (231) that is pivotably coupled to the lever (203) and a second link (229) that is pivotably coupled to a push rod (217) that is operatively coupled to the lever and that actuates the lever, wherein the first link (231) and the second link (229) are coupled to one another by way of a slot guide (233) such that the first and second links (231, 229) slide relative to one another as a function of the current stroke level of the automatic slack adjuster (201), and
• a sensor arrangement (213) that determines a relative position of the first link (231) to the second link (229) at the slot guide (233).