| 摘要 |
A folding door having panels pivoted about vertical axes, top and bottom pivot assemblies, the bottom assembly comprising a bracket mountable beneath the door. The bracket defines a track along which a pivot block is guided. A sleeve is mounted in a vertical opening of the door and a pivot pin threaded into the sleeve, which pin is vertically adjustable relative to the door. The block has a vertical opening therein and the pivot pin has a lower end thereof extending therethrough. The pin and block have vertical teeth which are engaged when the pin is moved relatively downward onto said block and are disengaged when the pin is moved relatively upwardly. The pivot block and the bracket have vertically engageable teeth such that when the block is moved downwardly onto the bracket, the teeth are engaged, and when moved upwardly, the teeth are disengaged. The pin and block are constructed and arranged such that upon lifting the door, first the pivot pin teeth are disengaged from the block teeth permitting the pivot pin to be rotated to adjust the door vertically, and upon further lifting the block teeth will disengage from the bracket teeth permitting horizontal adjustment of the block relative to the bracket. Further lifting of the door disengages the pivot pin from the block when the pivot block contacts the bracket causing pressure to snap the pivot pin out of the block opening.
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