| 摘要 |
Device for indicating wear of the pads of friction material in so-called floating calipers used in the disc brakes of vehicle wheels and generally comprising a caliper body (13) which is mounted so that it can slide axially by means of at least one hole (12) on at least one guide pin (10, 11), one end of which is rigidly connected, directly or indirectly, to the wheel stub axle, the axis of the guide pin and of the corresponding hole in the caliper body being perpendicular to the plane of the brake disc (18), a pair of pads (19, 20) positioned so that they straddle the disc (18), and a hydraulic piston (26) which acts directly on one (19) of the said pads and indirectly on the other pad (20), via the said caliper body (13).The device includes a linear electrical displacement transducer (34, 35) positioned between a point (32) integral with the said guide pin (10, 11) and a point (38) integral with the said caliper body (13) which slides with respect to the guide pin (10, 11).A signal is obtained which gives the current state of wear of the pad and from which the remaining mileage safely permitted by the pad can also be calculated.
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