Piston and disc brake using same

• Main Authors: INOUE HAYURU, MATSUMURA SADATOMO
• Format: Patent
• Language: Chinese; English
• Published: 16.02.2018
• Subjects: BLASTING; BRAKES; CLUTCHES; COUPLINGS FOR TRANSMITTING ROTATION; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

A piston is provided with: a cylindrical wall section (52) having an opening (51) at one axial end thereof; and a bottom section (53) closing the other axial end of the wall section (52). The bottom section (53) has: an annular first region (71) provided on the inside radially of the wall section (52) so as to be continuous with the wall section (52); and a second region (72) provided on the inside radially of the first region (71) and formed so as to be recessed axially. The second region (72) has a changing-thickness region (103) having an axial thickness reduced toward the inside radially. 本发明的活塞具有：在轴线方向端具有开口部(51)的筒状的壁部(52)、以及将壁部(52)的轴线方向另端堵塞的底部(53)，底部(53)具有：与壁部(52)相连地设置在壁部(52)的径向内侧的环状的第区域(71)、以及设置在第区域(71)的径向内侧并在轴线方向上形成为凹状的第二区域(72)，第二区域(72)具有越到径向内侧轴线方向厚度越薄的厚度变化区域(103)。