| 摘要 |
The step assembly (20) includes a mounting bracket (26) mounted to an under- carriage of the pick-up truck. A step (30) is pivotally secured to the mounting bracket. The step can rotate between a stowed position with the ste p disposed adjacent the mounting bracket and an operative position with the st ep extending from the bracket. A coil spring is mounted between the bracket and the step for continuously biasing the step toward the stowed position. A ratchet mechanism, having a pawl, a cam and an over-center spring, is mounte d between the bracket and the step. The ratchet mechanism locks the step in th e operative position in response to rotation of the step from the stowed position to the operative position. When in the operative position, a user c an stand on the step assembly to access the bed of the pick-up truck. The ratch et mechanism also unlocks the step in response to over rotation of the step beyond the operative position. Once unlocked, the step automatically counter rotates back to the stowed position. When in the stowed position, the step assembly is concealed underneath the pick-up truck.
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