| 摘要 |
The rear horizontal gate or tailgate of a truck is locked in a vertical or horizontal position by a pivoting horizontal bar. Fingers extend fixedly outward from the rear of the bed of a truck. The bar hinges are slit so that in the horizontal position they swing down over and grasp the fingers, holding the tailgate in a locked downward position. The tailgate is placed into an upward position by swinging the bar outward, freeing it from the fingers and raising the gate vertically. The weight of the horizontal bar swings down and the bar latches against the upper surface of the support fingers, holding the tailgate in a locked upward position. The tailgate thus can be locked in one of the two positions, up or down, while the truck is in motion without requiring the use of lock pins, simply by manipulation of the weighted horizontal bar and hinge member.
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