JP2006189148A5 - - Google Patents

Claims (9)

In a disc brake operating device having a parking operating mechanism on one end side of a caliper that slidably supports a piston having a built-in adjuster mechanism, the operating mechanism includes an adjusting spindle of the adjuster mechanism, and an orthogonal to the adjusting spindle. , Have a parking lever at one end and a pair of camshaft-side rolling curved surfaces at two positions on the radially outer side of the outer peripheral surface, and allow displacement in the axial direction of the adjusting spindle at one end of the caliper A supported camshaft, and a pair of thrust transmission assemblies disposed between the camshaft, the adjustment spindle, and a portion fixed to the caliper , respectively, to apply axial thrust to the adjustment spindle by rotation of the camshaft. become, the thrust transmitting assembly, the adjustment and both rolling curved surface provided on the outer peripheral surface of the cam shaft while rotating A pair of rolling rollers that roll between the spindle and the fixed portion to the caliper, the both said rolling roller, wherein a double camshaft rolling curved surface, provided at a base end side of the adjusting spindle A disc brake actuating device comprising a parking operation mechanism in rolling contact with a spindle-side rolling curved surface and a caliper-side rolling curved surface provided on a portion fixed to the caliper . 2. The disc brake actuating device having a parking operation mechanism according to claim 1 , wherein the centers of curvature of both camshaft-side rolling curved surfaces provided on the camshaft are separated from the camshaft shaft center by a predetermined distance. The respectively provided on the adjusting spindle side and the caliper, the spindle side, the caliper-side center of curvature of both the rolling curved surface is a center of curvature of both the camshaft rolling curved surface provided on the cam shaft, at a position close respectively A disc brake actuating device comprising the parking operation mechanism according to claim 2 . The respectively provided on the adjusting spindle side and the caliper, the spindle side, the caliper side both the rolling curved surface, according to claim 3 which is formed a stroke range of both curved in the initial rotation of the cam shaft as a straight portion A disc brake actuator equipped with a parking operation mechanism. Respectively provided on the adjusting spindle side and the caliper, the spindle side, at least one of the rolling curved surface of the caliper-side both the rolling curved surface is formed in a curved member attached to the adjusting spindle or caliper according to claim 3 or 5. A disc brake actuating device comprising the parking operation mechanism according to 4 . A cylindrical hole facing the axial direction of the adjusting spindle and an insertion port facing the direction perpendicular to the cylindrical hole are formed at the end of the caliper on the side opposite to the rotor, and a camshaft inserted from the insertion port is inserted into the cylindrical hole. 6. A disc brake actuating device comprising the parking operation mechanism according to claim 1 , wherein a guide member for sliding support is fixed. The disc brake operating device provided with the parking operation mechanism according to claim 6 , wherein the camshaft is slidably supported by a pair of notch grooves formed in a cylindrical portion of the guide member. A dust boot is disposed between the camshaft and the insertion port formed at the end of the caliper on the opposite side of the rotor, and the dust boot is provided by a parking lever guide that suppresses tilting of the parking lever disposed on one side of the camshaft. A disc brake comprising the parking operation mechanism according to claim 6 or 7 , which is attached. The caliper has a housing connected to an end on the side opposite to the rotor, and the adjustment spindle, the thrust transmission assembly, and the camshaft are integrally assembled in the housing . A disc brake actuating device comprising the parking operation mechanism described in 1.