Patent ID: 9726242
Date: 2017-08-08
CPC Classifications: F16D

Claim:
1. A caliper unit comprising: a piston configured to linearly reciprocate in a cylinder; a pushrod configured to move along with the piston; an operating ramp configured to linearly move the pushrod in one direction; a high compression spring supported by the cylinder and configured to restore the pushrod to an original position; and a floating ramp interposed between the high compression spring and the operating ramp to transfer elastic force of the high compression spring to the operating ramp, wherein the pushrod comprises: an installation portion having a step difference formed in an external side in a radial direction so as to install a low compression spring; and an extension portion having a step difference from another side of the installation portion to the external side in a radial direction, wherein one surface of the extension portion contacts a depression surface of the floating ramp.