Small -size calliper

The utility model relates to a small -size calliper, including the pincers body, piston and dust cover, be equipped with the piston chamber on the pincers body, the piston intracavity is located to the piston, and the dust cover is installed at the piston mouth, its characterized in that the dust cover includes rubber spare, rubber spare upper end is equipped with the lip of inside extension, lip and piston interference fit on the dust cover adopt lip interference design to reach sealed effect through dust cover and piston contact position to it makes piston surface remain the cleanness throughout to make the piston swipe to piston surface through the dust cover lip in actuating the motion process, the interference fit assembly that increases by a skeleton and clamp the body on rubber spare improves the high assembly efficiency of dust cover assembly, simplification assembly operations. 本实用新型涉及的是种小型卡钳，包括有钳体、活塞和防尘罩，所述钳体上设有活塞腔，所述活塞设于活塞腔内，防尘罩安装在活塞口，其特征在于所述防尘罩包括橡胶件，所述橡胶件上端设有向内延伸的唇口，所述防尘罩上的唇口与活塞过盈配合，通过防尘罩与活塞接触部位采用