Tool structure facilitating the adjustment of blade tension

1. A folding knife comprising:

a shank, a blade foldable in the shank, a sleeve, a lock lever, a cover plate, and adjusting screws;

wherein the shank comprises a left handle and a right handle, and a storage slot formed between the left handle and the right handle for receiving the blade;

wherein the left and right handles are both provided with a transverse mounting hole, and the sleeve is installed in the transverse mounting holes;

wherein the sleeve has a guide hole extending along a longitudinal axis of the sleeve and a guide slot arranged on a right end of the sleeve;

wherein the lock lever is T-shaped and has a button lever and a guide lever connected to a right end of the button lever, wherein the guide lever further comprises a first lock catch and a second lock catch;

wherein the button lever is received in the guide hole of the sleeve, and the guide lever is received in the guide slot of the sleeve, wherein the blade has a lock hole adapted to receive the first lock catch and the second lock catch; and

wherein the cover plate is located on a right side of the right handle and is connected to a right end of the sleeve by the adjusting screws, and the cover plate is further provided with a compression portion for pressing against the right handle.

2. The folding knife of claim 1 , further comprises an elastic reset component that drives the lock lever to reset.

3. The folding knife of claim 2 , wherein the elastic reset component is a reset spring, the lock lever is provided with a spring hole for mounting one end of the reset spring, and the cover plate has a guide pillar for receiving the other end of the reset spring.

4. The folding knife of claim 3 , wherein a left end of the button lever is an unlocking press portion, the sleeve has a sink corresponding to the unlocking press portion, and the left end of the button lever is located in the sink.

5. The folding knife of claim 4 , wherein a left end of the sleeve is provided with a stop step.

6. The folding knife of claim 3 , wherein the left handle has a left side panel and a left lining located on the right side of the left side panel, while the right handle has a right side panel and a right lining located on the left side of the right side panel, and the blade is located between the left lining and the right lining.

7. The folding knife of claim 3 , wherein the shank has a limit rod provided in the storage slot.

8. The folding knife of claim 3 , wherein the shank is provided with a clip.