Clamping mechanism with detachable positioning member

1. A clamping mechanism, comprising:

a positioning member;

a support plate defining a through hole;

a frame fixed on the support plate and defining a positioning hole;

a fastening assembly comprising:

a fastening member rotatably positioned on the frame, and

an elastic member compressed between the frame and the fastening member, wherein the positioning member extends through the through hole of the support plate and the positioning hole to resist the fastening member, and is configured to push the fastening member and being fastened by the fastening member under an elastic force of the elastic member; and

an operating assembly resisting the fastening member and configured to push the fastening member, and being capable of driving the fastening member away from the positioning member to release the positioning member.

2. The clamping mechanism of claim 1 , wherein the frame is fixed to the support plate, and the fastening assembly and the positioning member are positioned on the frame.

3. The clamping mechanism of claim 2 , wherein the frame comprises a bottom plate and two side plates extending from an edge of the bottom plate in parallel, each side plate defines a pivot hole, the fastening assembly comprises a pivot shaft extending through the pivot holes of the side plates, and the fastening member is sleeved on the pivot shaft.

4. The clamping mechanism of claim 3 , wherein the elastic member is compressed between the bottom plate and the fastening member.

5. The clamping mechanism of claim 3 , wherein each side plate defines an assembly hole, and the operating assembly comprises an operating pole extending through the assembly holes of the side plates.

6. The clamping mechanism of claim 5 , wherein the operating assembly further comprises a resisting member sleeved on the operating pole, and a pin fixing the resisting member to the operating pole.

7. The clamping mechanism of claim 6 , wherein the resisting member has an elliptical cross-section perpendicular to an axis of the resisting member.

8. The clamping mechanism of claim 5 , wherein the operating pole comprises a shaft portion and an operating portion extending from an end of the shaft portion.

9. A clamping mechanism, comprising:

a positioning member;

a support plate defining a through hole;

a frame fixed to the support plate and defining a receiving groove, wherein the frame comprises a bottom plate and two side plates extending from an edge of the bottom plate in parallel, each side plate defining a pivot hole and an assembly hole;

a fastening assembly rotatably received in the receiving groove of the frame, wherein the fastening assembly comprises a fastening member sleeved on the pivot shaft, a pivot shaft extending through the pivot holes of the side plates, and an elastic member compressed between the bottom plate and the fastening member, the positioning member extends through the through hole of the support plate, and is clamped between the fastening member and the frame under an elastic force of the elastic member; and

an operating assembly resisting the fastening member and configured to push the fastening member, thereby driving the fastening member away from the positioning member, wherein the operating assembly comprises an operating pole extending through the assembly holes of the side plates, a resisting member sleeved on the operating pole, and a pin fixing the resisting member to the operating pole.

10. The clamping mechanism of claim 9 , wherein the elastic member is compressed between the bottom plate and the fastening member.

11. The clamping mechanism of claim 9 , wherein the resisting member has an elliptical cross-section perpendicular to an axis of the resisting member.

12. The clamping mechanism of claim 9 , wherein the operating pole comprises a shaft portion and an operating portion extending from an end of the shaft portion.

13. A clamping mechanism, comprising:

a positioning member;

a support plate defining a through hole;

a frame fixed to the support plate, wherein the frame comprises a bottom plate and two side plates extending from an edge of the bottom plate in parallel, each side plate defining a pivot hole and an assembly hole;

a fastening assembly, the fastening assembly fixed to the frame, wherein the fastening assembly comprises a pivot shaft extending through the pivot holes of the side plates, a fastening member sleeved on the pivot shaft, and an elastic member, the positioning member extends through the through hole of the support plate, and fastened by the fastening member under an elastic force of the elastic member; and

an operating assembly resisting the fastening member and configured to push the fastening member, thereby driving the fastening member away from the positioning member, wherein the operating assembly comprises an operating pole extending through the assembly holes of the side plates, a resisting member sleeved on the operating pole, and a pin fixing the resisting member to the operating pole.