PROBLEM TO BE SOLVED: To facilitate operation of a lock unit, perform lock or lock release of an extensible poll simply and instantaneously, and adjust a height or length of the extensible poll easily.SOLUTION: A lock unit U is configured such that in a housing 1 (extensible side poll insertion part 12) provided at one end part of a stationary side poll P1, an extensible side poll P2 is pressure-welded into a substantially chevron shape and locked by a pair of annular lock members 2 with this state as a normal state, and with single pressing operation of an operation button 40 on a peripheral surface of the housing 1, the gap between the respective annular lock members 2 is forcibly opened by a wedge-shaped part 41 inside the housing 1, to release lock of the extensible poll P2.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2017,JPO&INPIT【課題】ロックユニットの操作がしやすく、伸縮式ポールのロック及びロック解除を簡単かつ瞬時に行え、伸縮式ポールの高さ又は長さの調節を容易にする。【解決手段】このロックユニットUでは、固定側のポールP1の一端部に設けたハウジング1(伸縮側ポール挿通部12)内で伸縮側のポールP2を、常態として、一対の環状ロック部材2により略ハの字形に圧接してロックし、ハウジング1周面の操作ボタン40のワンタッチの押操作により、ハウジング1内でクサビ形形状部41により各環状ロック部材2間を押し開き、伸縮側のポールP2のロックを解除するようにした。【選択図】図3
