| 摘要 |
<P>PROBLEM TO BE SOLVED: To simplify structure and reduce manufacturing cost in a vehicular braking device. <P>SOLUTION: A relief valve 86 is movably supported in a chamber 81 in an input piston 13, thereby dividing a first suction chamber R<SB>11</SB>, a second suction chamber R<SB>12</SB>, and a restraint chamber R<SB>13</SB>. A pressurizing chamber R<SB>5</SB>is communicated to the second suction R<SB>12</SB>through a communicating hole 83. A first discharging port 41 is communicated to the first suction chamber R<SB>11</SB>through a suction port 84. A supplying port 37 is communicated to the restraint chamber R<SB>13</SB>through the communicating hole 85. The relief valve 86 is energized by an energizing in a direction closing the communicating hole 83 and supported, and the communicating hole 83 can be opened by suction force from the suction port 84 to the first suction chamber R<SB>11</SB>. <P>COPYRIGHT: (C)2008,JPO&INPIT |
