US 2026/0097809 A1Published application

Rear wheel steering apparatus

AssigneeHyundai Mobis Co., Ltd.

InventorsKwang Yoon KIM, Sun Young CHEONG, Byoung Ook SON, Soon Ho BAEK

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Abstract

Disclosed is a rear wheel steering apparatus that easily measures an absolute position of a rear wheel steering system including a steering shaft and a drive motor. This apparatus includes a driving force generator providing a driving force, a gear-shaped drive pulley connected to the driving force generator, a gear-shaped driven pulley configured to rotate by receiving a driving force from the drive pulley, a first measurement unit including a rotating sub-gear engaged with the drive pulley and a first magnetic force generator generating a magnetic field variation as the sub-gear rotates, a second measurement unit including a rotating main gear engaged with the driven pulley and a second magnetic force generator generating a magnetic field variation as the main gear rotates, and a printed circuit board detecting magnetic field variations of the first and second magnetic force generators and measuring steering angles of the drive and driven pulleys.

Claims10

Dependent claims

A rear wheel steering apparatus comprising:

a driving force generator configured to provide a driving force;
a drive pulley having a first gear shape and connected to the driving force generator;
a belt connected to and driven by the drive pulley;
a driven pulley having a second gear shape, connected to and rotated by the belt, and receiving and rotated by a driving force from the drive pulley;
a first measurement unit including (1) a sub-gear arranged on an inner side of the belt and configured to rotate in engagement with the drive pulley, and (2) a first magnetic force generator configured to generate a first magnetic field variation in response to rotation of the sub-gear;
a second measurement unit including (1) a main gear arranged on the inner side of the belt and configured to rotate in engagement with the driven pulley, and (2) a second magnetic force generator configured to generate a second magnetic field variation in response to rotation of the main gear;
and
a printed circuit board configured to detect magnetic fields of the first and second magnetic force generators, and measure rotational angles of the drive pulley and the driven pulley.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/246,895Filed 24 Jun 2025
Priority: KR 10-2024-01368158 Oct 2024
Published: 9 Apr 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

B62D 7/159
Characterised by means varying the ratio between the steering angles of the steered wheels: characterised by computing methods or stabilisation…
B62D 5/0403
Electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear: characterised by constructional features, e.g.…
B62D 5/0424
Electric motor acting on or near steering gear: the axes of motor and final driven element of steering gear, e.g. rack, being parallel
B62D 5/0481
Characterised by control features of the drive means as such: monitoring the steering system, e.g. failures