Braking device

A braking device, comprising:

• a base, having a sliding groove therein;
• a braking component, comprising a first clamping block, disposed on the base in a manner that the first clamping block is capable of moving along a first axis;
• and
• a driving component, comprising:
• a driving member, disposed in the sliding groove, and having a chamber therein, and a first butting portion at one end;
• a movable member, disposed in the sliding groove, and passing the driving member in a manner that the movable member is capable of shifting relative to the driving member, one end of the movable member having a piston accommodated in the chamber, and the other end of the movable member has a second butting portion;
• and
• a reset member, disposed in the chamber, two opposite ends of the reset member butting the piston and an inner wall of the chamber respectively;
• wherein when the piston butts the reset member under an external force, the first butting portion of the driving member and the second butting portion of the movable member are kept away from each other along a second axis intersecting the first axis, so that the first clamping block is at a first starting position, and when the external force vanishes, the reset member performs reset and butts the piston, the first butting portion of the driving member and the second butting portion of the movable member are kept close to each other along the second axis, and the first butting portion or the second butting portion butts the first clamping block, so that the first clamping block shifts from the first starting position to a first braking position along the first axis towards a direction away from the second axis.