Electric caliper brake

Patent metadata

Field	Value
Publication number	US-9874257-B2
Application number	US-201615272384-A
Country	US
Kind code	B2
Filing date	Sep 21, 2016
Priority date	Sep 22, 2015
Publication date	Jan 23, 2018
Grant date	Jan 23, 2018

Abstract

Disclosed is an electric caliper brake. The electric caliper brake includes a carrier including a pair of pad plates installed to be moveable forward and backward, a caliper housing configured to be installed to be slidable on the carrier and to have a cylinder in which a piston of which an inside is dug in a form of a cup is moveable forward and backward due to a brake hydraulic pressure, a power conversion unit including a spindle member installed to pass through a rear of the cylinder and rotating due to a rotational force delivered from an actuator and a nut member screw-coupled to the spindle member, disposed in the piston, moving forward and backward according to rotation of the spindle member, pressurizing the piston, and releasing the pressurizing, and a filling member configured to be disposed in the piston in such a way that rotation of the filling member is limited, the filling member being coupled to the nut member.

First claim

What is claimed is:

1. An electric caliper brake comprising:
a carrier including a pair of pad plates installed to be moveable forward and backward;
a caliper housing configured to be installed to be slidable on the carrier and to have a cylinder in which a piston of which an inside is dug in a form of a cup is moveable forward and backward due to a brake hydraulic pressure;
a power conversion unit including a spindle member installed to pass through a rear of the cylinder and rotating due to a rotational force delivered from an actuator and a nut member screw-coupled to the spindle member, disposed in the piston, moving forward and backward according to rotation of the spindle member, pressurizing the piston, and releasing the pressurizing; and
a filling member having a hollow portion of which a center is hollow and the filling member is fitted and coupled into the piston in such a way that rotation of the filling member is limited, the filling member being coupled to the nut member, wherein an outer circumferential surface of the filling member has a polygonal shape and the hollow portion has a polygonal shape, and the nut member has a shape corresponding to the hollow portion.

2. The electric caliper brake according to claim 1 , wherein the filling member includes an anti-rotation surface having at least one plane on an outer circumferential surface of the filling member, and at least one anti-rotation jaw having a plane corresponding to the anti-rotation surface formed on the outer circumferential surface of the filling member is formed on an inner circumferential surface of the piston.

3. The electric caliper brake of claim 1 , wherein the outer circumferential surface of the filling member has at least six sides, and an inner circumferential surface of the piston comprises at least two anti-rotation jaws.

Assignees

• Mando Corp

Inventors

• Son Jong-Gu
• Kong Young-Hun

Classifications

• F16D2125/06

  Pistons · CPC title

• F16D2125/02

  Fluid-pressure mechanisms · CPC title

• F16D2121/04

  acting on a piston-type actuator, e.g. for liquid pressure · CPC title

• F16D65/183

  with force-transmitting members arranged side by side acting on a spot type force-applying member · CPC title

• F16D65/14 Primary

  Actuating mechanisms for brakes; Means for initiating operation at a predetermined position (brake control systems, parts thereof B60T) · CPC title