US 2011/0308902 A1 · ELECTRIC PARKING BRAKE ACTUATOR

Abstract

An electric parking brake actuator has an actuator device, a brake device and a cable-tension measuring device. The brake device has a cable and a tube assembly. The cable is mounted through the actuator device. The tube assembly is mounted around the cable and has a first tube, a second tube, a spring, a Hall IC and a magnet. The cable-tension measuring device has a first member and a second member which are mounted around the cable. The second member is capable of moving toward the first member relatively. The compressible spring is mounted between and abuts the first member and the second member. The Hall IC and the magnet are respectively mounted securely on the first member and the second member. The Hall IC is capable of measuring how much the spring is compressed to further measure the tension of the cable.

Claims10

Dependent claims

An electric parking brake actuator comprising:

an actuator device;
a brake device connected with the actuator device and having
a cable mounted through the actuator device;
and
a tube assembly mounted around the cable, located outside the actuator device, mounted securely on the actuator device and having a first tube and a second tube;
and
a cable-tension measuring device connected with the tube assembly and having
a first member mounted around the cable;
a second member mounted around the cable and capable of moving toward the first member relatively;
a compressible spring mounted between the first member and the second member and abutting the first member and the second member;
a Hall IC mounted securely on one of the first member and the second member;
and
a magnet mounted securely on the other one of the first member and the second member.

10 more elements

Dependencies are inferred from the claim text.

Electric parking brake actuator

Life of this patent

Electric parking brake actuator

Life of this patent

Abstract

Claims10