公开(公告)号：US10086815B2

公开(公告)日：2018-10-02

申请号：US15182211

申请日：2016-06-14

Applicant: NTN CORPORATION

Inventor： Makoto Muramatsu ,  Yuuki Saoyama ,  Tatsuya Yamasaki ,  Masaaki Eguchi ,  Yui Masuda

IPC: B60T13/74 ,  B60T17/22 ,  B60T17/00 ,  F16D55/227 ,  F16D65/18 ,  F16D66/00 ,  F16D125/40 ,  F16D125/48 ,  F16D125/50 ,  F16D127/06 ,  F16D55/225 ,  F16D121/24

Abstract: An electric brake device includes an electric motor; a braking force application mechanism configured to apply a braking force on a vehicle wheel; a lock mechanism configured to assume one of a locked condition; a temperature sensor configured to measure an ambient temperature of a vehicle; and a freezing preventive power supply unit configured to initiate supply of an electric power to the electric motor or a drive source of the lock mechanism. The freezing preventive power supply unit interrupts the supply of the electric power to the electric motor or the drive source of the lock mechanism when the temperature detected by the temperature sensor exceeds a second preset temperature T2 that is higher than a first preset temperature T1.

公开(公告)号：US10816052B2

公开(公告)日：2020-10-27

申请号：US16076751

申请日：2017-02-03

Applicant: NTN CORPORATION

Inventor： Masaaki Eguchi

IPC: F16D65/18 ,  B60T13/74 ,  F16D55/2265 ,  F16J15/52 ,  F16J3/04 ,  F16D65/00 ,  F16J15/32 ,  F16D125/50

Abstract: An electromechanical brake system includes a caliper body having a housing portion in which is received a linear motion mechanism for pressing a brake pad against a brake disk. A boot is coupled at its one end to an outer ring member of the linear motion mechanism, and at its other end to a support ring. The support ring abuts and is mechanically and fixedly fastened to an open end surface of the housing portion to close the open end of housing portion with the support ring and the boot.

公开(公告)号：US10508722B2

公开(公告)日：2019-12-17

申请号：US15527928

申请日：2015-11-04

Applicant: NTN CORPORATION

Inventor： Tatsuya Yamasaki ,  Masaaki Eguchi

IPC: F16H25/22 ,  F16D65/18 ,  H02K7/06 ,  B60T13/74 ,  F16D55/226 ,  F16H19/02 ,  F16D121/24 ,  F16D125/40 ,  F16D125/48 ,  F16D125/50 ,  F16H25/20

Abstract: An electric linear motion actuator is provided which includes an outer ring member, a rotary shaft, planetary rollers, and a carrier including a disk, and in which the outer ring member is formed with a helical rib, each of the planetary rollers being formed with circumferential grooves in which the helical rib is engaged. When the rotary shaft rotates, the planetary rollers rotate about their axes while revolving around the rotary shaft so that the outer ring member axially linearly moves. The actuator includes thrust roller and retainer assemblies each mounted between one of the planetary roller and the disk of the carrier, and each guided by a raceway, i.e., an end surface of the corresponding planetary roller. The actuator includes a common raceway disk common to all of the thrust roller and retainer assemblies, and mounted between the thrust roller and retainer assemblies and the disk of the carrier.

公开(公告)号：US10882503B2

公开(公告)日：2021-01-05

申请号：US15748897

申请日：2016-07-27

Applicant: NTN CORPORATION

Inventor： Masaaki Eguchi

IPC: F16D65/18 ,  B60T13/74 ,  F16D65/02 ,  F16D65/00 ,  F16D55/226 ,  F16D121/26 ,  F16H25/20

Abstract: An electromechanical brake system includes a linear motion mechanism configured to convert the rotation transmitted from the electric motor to a linear motion, thereby pressing a friction pad against a brake disk; a linear motion mechanism housing in which the linear motion mechanism is received as a single assembly with the components of the linear motion mechanism assembled together; and a caliper body shaped to extend across the outer periphery of the brake disk. The caliper body includes a claw portion axially supporting a friction pad; a housing-fixing plate which is arranged on the side of the linear motion mechanism housing opposite from the brake disk; and an outer shell portion through which the claw portion and the housing-fixing plate are coupled together.