Telescopic device
A telescoping device and connecting sleeve technology, which is applied in the connection of rods, connecting components, supporting machines, etc., can solve the problems of easy slipping, poor stability of the tripod, and large shaking range, etc., to achieve simple and fast operation, improve stability, and stabilize sex high effect
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[0029] Reference Figure 1 to Figure 13 , A telescopic device, comprising an outer tube 1, an inner tube 2 and a connecting sleeve 3. The upper end of the inner tube 2 extends into the outer tube 1, and the upper end of the connecting sleeve 3 and the lower end of the outer tube 1 For fixed connection, a locking sleeve 4 sleeved on the inner tube 2 is installed in the lower part of the connecting sleeve 3, and the locking sleeve 4 is provided with an axial opening 5 to form a C-shaped opening ring, so The inner wall of the connecting sleeve 3 is provided with an internal thread 6, the outer wall of the locking sleeve 4 is provided with an outer thread 7, the outer wall of the locking sleeve 4 is provided with a tapered portion 8, the inner tube 2 and the lock An anti-rotation structure is provided between the tight sleeve 4, and the anti-rotation structure prevents the inner tube 2 and the locking sleeve 4 from rotating relative to the circumferential direction, so that the inne...
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