| 摘要 |
PROBLEM TO BE SOLVED: To allow a joint body 2 to be a shelf support to be projectable/retractable by a rotary operation with respect to a joint supporting body 1 which is fixed to a lower hole by knocking, which is arranged on the sidewall of a storage space in furniture, or the like. SOLUTION: The joint body 2 includes a projection 20a for a male screw, which is arranged on the outer peripheral surface; and a rotary operation part 7, which is arranged at the front end. A female screw groove 21a to which the projection 20a for the male screw of the joint body 2 is fitted is arranged inside the joint supporting body 1. When the joint body 2 is operated by normal/reverse rotation, the joint body 2 is projected/retracted between a shelf support position for projection from the front end of the joint supporting body 1 and a retracting position for storage in the joint supporting body 1 concerning the joint for the shelf support. The joint supporting body 1 is bisected into a front side cylinder member 8 and a rear side cylinder member 9 in an axial direction. When the front and rear side cylinder members 8, 9 are mutually fixed, the female screw groove 21a is formed between end surfaces in a peripheral direction which faces in the direction of the axial center of the front and rear cylinder members 8, 9. COPYRIGHT: (C)2006,JPO&NCIPI
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