This is an electric crutch with length locking mechanism.It is driven and locked through one of the internal mechanisms.Prevent electric crutches from accidentally changing their length.The mechanism comprises a transmission seat,Drive plate and at least one locking column,The drive base can be connected with a constant current motor in an electric crutch.And a plurality of push blocks are convex at the bottom；The drive plate is provided with a plurality of displacement grooves along the circumference.One end of the displacement groove is concave with a locking groove.For the installation of lock posts,The pushing block can extend into the displacement groove.By pushing against the lock post,Drive the drive disk to rotate.Then the length of the electric crutch is changed.When the drive plate is loose due to external force,Because the lock column will be resisted by the inner wall of the electric crutch,Therefore, the drive disk can be locked in the non rotating state.To lock the length of the electric crutch.本創作係一種具長度鎖定機制之電動拐杖，係透過內部之一驅動及鎖定機構，防止電動拐杖意外改變其長度，該機構包括傳動座、驅動盤及至少一鎖制柱，該傳動座能與電動拐杖內之一直流馬達相連接，且底部凸設有複數個推動塊；驅動盤沿圓周向設有複數個位移槽，該位移槽之一端凹設有鎖制槽，以供安裝鎖制柱，推動塊能伸入位移槽中，以透過推抵鎖制柱，帶動驅動盤旋轉，進而改變電動拐杖之長度；在驅動盤因外力影響鬆動時，由於鎖制柱會被電動拐杖之內壁所牴觸，故能將驅動盤鎖制於無法轉動之狀態，以鎖定電動拐杖之長度。
