Gap compensation mechanism and steering gear applying same

Abstract

The invention provides a gap compensation mechanism and a steering gear applying the same, so that the gap between the worm and gear in the steering gear, along the tooth direction, is kept within a predetermined range, the steering comfort of the steering gear is improved, and the noise is reduced. The gap compensation mechanism comprises a gap adjusting seat and an end part supporting seat, wherein the middle part of the gap adjusting seat is provided with a first axial through hole which runs through, and the outer side end of the gap adjusting seat is provided with a protruding arc-shapedwall; the end part supporting seat extends into the arc-shaped wall from the outer side end, the arc-shaped wall is sleeved with a radial spring, two free ends of the radial spring are fixed on the arc-shaped wall, the inner side surface of the radial spring is abutted against the end part supporting seat, the elastic force of the radial spring pulls the end part supporting seat to the axial direction of the first axial through hole; a second axial through hole is arranged at the middle part of the end part supporting seat; a central supporting seat is rotatably arranged on the gap adjusting seat, the central supporting seat and the end part supporting seat are respectively positioned at two sides of the gap adjusting seat; and the middle part of the central supporting seat is provided with a third axial through hole.

Description

technical field [0001] The invention relates to the field of passenger car steering systems, in particular to a gap compensation mechanism and a steering gear using the gap compensation mechanism. Background technique [0002] With the development of technology in the automotive industry, consumers have gradually increased their requirements for vehicle comfort. Electric power steering systems have gradually replaced hydraulic power steering systems and become the mainstream configuration of steering systems. Steering system is the most closely contacted part with the driver, and its noise directly affects the comfort of the driver and the occupants. With the popularization of electric power steering systems, consumers' attention to the original hydraulic noise has gradually shifted to the mechanical abnormal noise of electric power steering systems. The main mechanical abnormal sound of the electric steering column comes from the worm gear reduction mechanism. The tooth cl...

AI Technical Summary

Problems solved by technology

With the wear of the worm gear mechanism, the meshing gap between the two gradually becomes larger. When the vehicle is driving on an uneven road, the ground impact causes the worm shaft to move in the axial direction or the worm shaft deviates from the axial direction at a certain angle to form elastic deformation. Generated vibration and noise, resulting in poor comfort for drivers and passengers

During in-situ steering and reversing operations, due to the increase in the meshing gap between the worm gear and the worm gear, the toothing sound is obvious, which will also cause the driver's control comfort to deteriorate

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