Abstract: A telescopic device including an outer pipe, an inner pipe fitted in the outer pipe, and a sleeve disposed between the outer pipe and the inner pipe. The telescopic device contains a lock mechanism, containing two bosses, and located between the inner pipe and the outer pipe. A tripod is also provided.

Abstract: The invention relates to an integrative three-segment tripod. The tripod has a main bracket and at least one stand leg having an upper segment, a middle segment and a lower segment. The upper segment, the middle segment, and the lower segment are each telescopically connected together. The stand leg further includes a locking unit and a safety device. The locking unit fixes the middle segment to the upper segment and simultaneously fixes the lower segment to the middle segment. The safety device is associated with the locking unit and keeps the locking unit in the fixing state when the locking unit is in the locking position. Therefore, each stand leg of the tripod can be controlled easily by a single locking unit, and the safety device prevents the rotation lever from inadvertent release.

Abstract: The present invention discloses a winding tripod, which includes a cradle head and three legs. Each of the legs is connected at one end with the cradle head via a universal joint, and used at the other end for supporting. At least one of the legs therein includes multiple first movable joints and multiple second movable joints, which are connected together alternately and hinged via a locking coupling device. The first and the second movable joints are provided with a hoverball hole. Between the first and the second movable joints are positioned a spring and a hoverball. The hoverball is clipped into the hoverball hole when the first and the second movable joints are pivotally turned to a predetermined angle.

Abstract: The invention relates to an integrative three-segment tripod. The tripod has a main bracket 1 and at least one stand leg, each stand leg including an upper segment, a middle segment and a lower segment, the upper segment is connected to the main bracket 1, the middle segment is telescopically connected to the upper segment, and the lower segment is telescopically connected to the middle segment, wherein the stand leg further includes a locking unit and a safety device, the locking unit is provided at the joints where the middle segment is joined the upper segment and the lower segment, and can fix the middle segment to the upper segment and simultaneously fix the lower segment to the middle segment, and the safety device is associated with the locking unit, which can keep the locking unit in the fixing state when the locking unit is in the locking position.