| 摘要 |
<p>There is provided a power steering apparatus comprising a torque sensor (4) detecting a steering torque capable of discriminating a normal input and an inverse input without a torsion bar. An intermediate gear (15) engaging with rack teeth (14) provided in an outer surface of a rack shaft (1) and a pinion (21) provided in a lower portion of a pinion shaft (2) is interposed between both the rack teeth (14) and the pinion (21). A force applied to the pinion shaft (2) is detected by a first force sensor (41), a force applied to a support shaft (16) of the intermediate gear (15) is detected by a second force sensor (42), and a torque detection value (T) capable of discriminating the normal input and inverse input is calculated by a torque calculating unit (40) to which outputs of both the sensors (41, 42) are given.
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