Abstract: A clamping mechanism includes a positioning member, a support plate, a frame, a fastening assembly, and an operating assembly. The support plate defines a through hole. The fastening assembly is fixed to the frame. The fastening assembly includes a fastening member and an elastic member. The positioning member extends through the through hole of the support plate, and is fastened by the fastening member under an elastic force of the elastic member. The operating assembly resists the fastening member, thereby driving the fastening member away from the positioning member.

Abstract: An expansion assembly includes a connecting plug, a deformable sealing sleeve, and an expansion sleeve. The connecting plug defines a through hole configured for air flow to pass therethrough. The deformable sealing sleeve is sleeved on the connecting plug. The expansion sleeve houses the deformable sealing sleeve and is sleeved on the connecting plug. The expansion sleeve comprises a number of resilient arms separated from each other. When airflow is introduced into the deformable sealing sleeve via the connecting plug, the deformable sealing sleeve is expanded, causing the number of resilient arms of the expansion sleeve to expand outward. A positioning mechanism employing the expansion assembly is also disclosed.

Abstract: A clamping mechanism includes a positioning member, a support plate, a frame, a fastening assembly, and an operating assembly. The support plate defines a through hole. The fastening assembly is fixed to the frame. The fastening assembly includes a fastening member and an elastic member. The positioning member extends through the through hole of the support plate, and is fastened by the fastening member under an elastic force of the elastic member. The operating assembly resists the fastening member, thereby driving the fastening member away from the positioning member.

Abstract: A clamp mechanism includes a support plate, a frame, a positioning member, a resisting member, an operating assembly. The support plate defines an assembly hole. The frame is fixed to the support plate, and defines a positioning groove and a sliding groove. The positioning member extends through the assembly hole of the support plate, and received in the positioning groove. The operating assembly is connected to the resisting member. The resisting member is movably received in the sliding groove and opposite to the positioning member. The sliding groove has a first end adjacent to the positioning member and a second end away from the positioning member, such that the operating assembly drives the resisting member to move in the sliding groove from the second end to the first end, thereby clamping the positioning member in the positioning groove of the frame.