# US 10,309,471 B2 · Electric caliper brake > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,309,471 B2 - Document ID: US10309471B2 - Status: Granted - Kind: B2 - Application number: 15/615,533 - Filed: 2017-06-06 - Published: 2017-12-14 - Granted: 2019-06-04 - Earliest claimed: 2016-06-10 - Assignees: Mando Corporation - Applicants: Mando Corporation - Inventors: Kyung-Won Kim - Web page: https://patentgrep.com/patent/US10309471B2 ## CPC - F16D 65/18: adapted for drawing members together {, e.g. for disc brakes} - B60T 13/586: {the retarders being of the electric type} - B60T 13/741: {acting on an ultimate actuator} - F16D 55/22: by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads - F16D 55/226: in which the common actuating member is moved axially {, e.g. floating caliper disc brakes} - F16D 65/183: {with force-transmitting members arranged side by side acting on a spot type force-applying member} - F16H 25/2018: {with both screw and nut being driven, i.e. screw and nut are both rotating} - F16D 2121/04: acting on a piston-type actuator, e.g. for liquid pressure - F16D 2121/24: using motors - F16D 2125/40: Screw-and-nut - F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES - B60T: VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL (electrodynamic brake systems for vehicle, in general B60L; brakes per se, i.e. devices where braking effect occurs, including ultimate brake actuators, F16D); ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES - F16H: GEARING ## Abstract Disclosed herein is an electric caliper brake. Then electric caliper brake which includes a carrier provided with a pair of pad plates movably with respect to a disk, and a caliper housing slidably installed on the carrier and provided with a cylinder in which a piston is movably provided by braking oil pressure, includes a spindle member which is installed to penetrate a rear portion of the cylinder and rotates by receiving a rotational force from an actuator, and a power converting unit including a nut member which is screwed with the spindle member and is disposed in the piston, moves forward and backward in accordance with the rotation of the spindle member so as to press the piston; a filling member coupled to the nut member in the piston; and an anti-rotation surface provided on at least one plane on an outer circumferential surface of the filling member so that the filling member is coupled to the piston in a limited rotation state. ## Claims ### Claim 1 An electric caliper brake which comprises a carrier having a pair of pad plates movably with respect to a disk, and a caliper housing slidably installed on the carrier and having a cylinder in which a piston is movably provided by braking oil pressure , the electric caliper brake comprising: a spindle member which penetrates a rear portion of the cylinder and rotates by receiving a rotational force from an actuator; a power converting unit including a nut member, wherein the nut member is screwed with the spindle member and disposed in the piston so as to move forward and backward in accordance with the rotation of the spindle member to press the piston; a filling member coupled to the nut member in the piston; an anti-rotation surface on at least one plane on an outer circumferential surface of the filling member so that the filling member is coupled to the piston in a limited rotation state; a stopper projection protruding from one surface of the spindle member in a circumferential direction toward the nut member; a stepped portion disposed on the nut member and engaged with the stopper projection when the stopper projection rotates; and a backup protrusion disposed on the filling member and engaged with the stopper projection when the stopper projection rotates, wherein the stepped portion and the backup protrusion facing the stopper projection are disposed at different angles. ### Claim 2 (depends on 1) The electric caliper brake according to claim 1, wherein the nut member comprises a rod portion having thread for screwing to the spindle member and a head portion extending radially from the rod portion, the filling member is integrally formed with the nut member, at least one rotation preventing jaw having a plane surface protrudes on an inner circumferential surface of the piston, and the head portion is not in contact with the at least one rotation preventing jaw. ### Claim 3 (depends on 2) The electric caliper brake according to claim 2, wherein the filling member is in contact with a rear side of the head portion to enclose the rod portion. ### Claim 4 (depends on 2) The electric caliper brake according to claim 2, wherein the anti-rotation surface is in surface contact with the at least one rotation preventing jaw having a plane surface formed on an inner circumferential surface of the piston. ### Claim 5 (depends on 1) The electric caliper brake according to claim 1, wherein the filling member is formed of aluminum or a plastic material. ### Claim 6 (depends on 1) The electric caliper brake according to claim 1, wherein the nut member comprises: a head portion that is in contact with the piston; and a nut rod portion extending from the head portion and threaded on an inner circumferential surface to be screwed with the spindle member, wherein the filling member has a hollow portion at a center thereof, and the nut rod portion is coupled to the hollow portion.