ELECTRICAL POWER ASSISTED STEERING DEVICE

摘要

An electrical power assisted steering device has a lower shaft, an upper shaft module, a pre-torsion module and a torsion bar. The upper shaft module has an upper shaft, a detecting unit mounted around the upper shaft, and an assembling space annularly formed between the detecting unit and the pushing portions. The pre-torsion module is mounted in the assembling space and has a maintaining unit mounted around the upper shaft and in the assembling space, multiple sliding blocks mounted in the maintaining unit and respectively abutting the upper shaft, and multiple springs mounted in the maintaining unit and respectively abutting between the maintaining unit and the sliding blocks. The torsion bar is connected between the upper shaft and the lower shaft.

主权项

1. An electrical power assisted steering device mounted in a vehicle and having:
a sensing module having an upper rotor and a lower rotor mounted under the upper rotor; a lower shaft engaged with the lower rotor; an upper shaft module mounted above the lower shaft and having
an upper shaft;a detecting unit mounted around the upper shaft and engaged with the upper rotor of the sensing module;multiple pushing portions formed in the upper shaft; andan assembling space annularly formed between the detecting unit and the pushing portions; a pre-torsion module mounted in the assembling space and having
a maintaining unit mounted around the upper shaft and in the assembling space;multiple sliding blocks mounted in the maintaining unit and respectively abutting the pushing portions; andmultiple springs mounted in the maintaining unit and respectively abutting between the maintaining unit and the sliding blocks; and a torsion bar connected between the upper shaft and the lower shaft.