The invention discloses a hidden double-action
disc brake, which comprises a left caliper, a left static disk, a left dynamic disk, a traction arm, a right dynamic disk, a right static disk, a right caliper and a
brake line. The caliper and the right caliper are connected and fixed by the caliper locking screw, the left static disc and the right static disc are riveted inside the left caliper and the right caliper respectively, and the
steel ball raceways of the left static disc and the right static disc are respectively A left
steel ball and a right
steel ball are provided, and the traction arm is installed on the inner side of the left static disk and the right static disk. In the present invention, the
brake pads move in opposite directions during braking, so that the disc is centered and does not deform, prolonging the service life of the disc. When loading and adjusting, just pinch the
brake handle to lock the
disc brake and it can be adjusted. The adjustment is similar to
oil pressure, and the adjustment is simple and easy. ;The
trailing arm is hidden in the top cover, so the appearance is simple and beautiful. It is a product that undertakes high-end mechanical disc brakes and low-end hydraulic disc brakes. The market prospect has potential.