Telescopic pipe with toothed locking structure

A telescopic pipe with a toothed locking structure, comprising a plurality of sequentially connected pipe fittings;

• wherein in adjacent two pipe fittings, one pipe fitting is defined as a front pipe, and the other pipe fitting is defined as a rear pipe;
• wherein the rear pipe has an adjustment hole and a plurality of limit teeth;
• the plurality of limit teeth are protruded from a wall of the adjustment hole and are spaced apart in a length direction of the adjustment hole to form a plurality of limit grooves;
• one end of the front pipe is inserted into the adjustment hole and is capable of moving relative to the rear pipe along the adjustment hole,
• wherein one end of the front pipe inserted into the rear pipe is movably connected with a clamp block that matches with the limit grooves,
• when the front pipe moves relative to the rear pipe, the clamp block is driven to move away from the limit grooves by the limit teeth and move into another adjacent limit groove.