| 摘要 |
A goal joint structure includes a first section and a second section pivoted to each other. The first section has a hook member provided thereon. The second section has two spaced walls define therebetween a distance large enough to receive therein the hook. Each of the walls has an elongated slot formed thereon to be in alignment with each other and each has two expanded lengthwise ends defined by circular holes. A retaining bar extends through the two slots and is dimensioned to be movable along the slots. An expanded section that has a diameter substantially corresponding to the circular holes and larger than the width of the slots is provided on the retaining bar. The retaining bar is spring-biased to have the expanded section located within one expanded ends of the slots so as to make the retaining bar fixed in the lengthwise direction of the slots. Pulling the retaining bar against the spring to have the expanded section disengage from the expanded end of the slots allows the retaining bar to move from one end of the slot to the other end. Rotating the first section relative to the second section to have the hook moved into between the walls of the second section and moving the retaining bar to engage the hook maintain the first section and second section in the expanded condition.
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