Importance

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Abstract

An automatically collapsible prop for propping all kinds of loads such as golf bag, knapsack, coolie rack, etc., comprises a first tubular member having an upper end and an open lower end, a second tubular member relatively moveably inserted in the first tubular member so as to slide down by gravity relative to it to protrude from the open lower end of the first tubular member by a predetermined length when lifting the first member in a sloping or vertical position, and a third member rotationally mounted on a fixed shaft attached to the second tubular member so as to pivot relative to the first and second members about the fixed shaft. A first engaging groove is formed in the surface of the first member in the longitudinal direction to allow the second member with the third member to slide relative to the first member. A rack-gear mechanism is provided to automatically pivot the third member on the fixed shaft by a predetermined propping angle when the part of the second member protruding from the open lower end of the first member is pressed against the ground, and pushed completely into the open lower end of the first member, thereby fixing the third member on the ground in a triangular shape with the first member.

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First Claim