Patent ID: 9528597
Filing Date: 2016-12-27
CPC Classification: B62D,F16H

Claim Text:
1. A power steering apparatus comprising a worm driven by a motor for assistance, a worm wheel engaged with the worm and transmitting an assist force to a steering shaft, a housing which houses the worm and the worm wheel, a plug having a male screw on an outer peripheral surface of the plug, the male screw being screwed with a female screw formed at the housing, an elastic member, one end of which in a biasing direction of the elastic member is supported by the worm and other end of which in the biasing direction is supported by the plug, giving a preload between the worm and the worm wheel, a plug fixing member for fixing the plug, a position of which is adjusted to a screwing position at which the preload is a predetermined value, so that the plug is unrotatable with respect to the housing, a gauge-head insertion hole formed at the housing, which is for inserting, from an outside of the housing, a gauge head for measuring a load of the worm with regard to the preload; and a closing member which closes the gauge-head insertion hole.