Caliper brake
The disclosed caliper brake includes a piston configured to move forward and backward in an axial direction and a back plate provided to face a front side of the piston, wherein the piston is provided with a suction plate provided on a front surface of the piston and having a center concavely formed rearward to adsorb the back plate during the piston moving forward.
1 . A caliper brake comprising:
a piston ( 100 ) configured to move forward and backward in an axial direction; and
a back plate ( 200 ) provided to face a front side of the piston ( 100 ),
wherein the piston ( 100 ) is provided with a plurality of suction plates ( 110 ) provided on a front surface of the piston ( 100 ), each suction plate ( 110 ) having a center concavely formed rearward to adsorb the back plate ( 200 ) during the piston ( 100 ) moving forward,
wherein the plurality of suction plates ( 110 ) are disposed on an edge of the front surface of the piston ( 100 ) and are radially symmetrically disposed with respect to an axis of the piston ( 100 ), and
wherein, upon a forward movement of the piston ( 100 ), a space provided in the center of each suction plate ( 110 ) is reduced in size and air present in the space is discharged to the outside so that the respective suction plate ( 110 ) adsorbs the back plate ( 200 ), and when the piston ( 100 moves backwards, pulls the back plate ( 200 ) rearward together with the piston ( 100 ) in order to prevent a drag torque problem.
2 . The caliper brake of claim 1 , wherein at least one of the suction plates ( 110 ) is disposed to be spaced apart from an adjacent suction plate ( 110 ).
3 . The caliper brake of claim 1 , wherein the piston ( 100 ) includes a screw or a rivet configured to fix at least one of the suction plates ( 110 ) to the front surface.
4 . The caliper brake of claim 1 , wherein at least one of the suction plates ( 110 ) is formed of at least one of a metal, a plastic, and rubber.