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    • 2. 发明专利
    • Hydraulic motor parking brake
    • JP2004300985A
    • 2004-10-28
    • JP2003093632
    • 2003-03-31
    • Nachi Fujikoshi Corp株式会社不二越
    • HAYASHI SHINGO
    • F03C1/26F04C15/00F16D55/08
    • F04C15/0084
    • PROBLEM TO BE SOLVED: To provide a hydraulic motor parking brake that dispenses with drilling a number of round holes, has a small number of components and can be assembled easily, and can uniformly press the entire periphery of an annular brake piston.
      SOLUTION: The hydraulic motor parking brake comprises a rotary shaft 2 that is supported by a casing 1 and is rotated around the axis 10 and a cylinder block 3 fixed to the rotary shaft 2; a brake disk 5 that is supported so that it cannot be rotated at a cylinder block outer periphery 31 and can come into contact with a casing inner periphery step section 16; an annular brake piston 4 that is supported so that it can travel in an axial direction between a casing inner-periphery wall 18 and the cylinder block 3 and can come into contact with the brake disk 5; and a spring subassembly 60 that is arranged between a casing inner wall 19 and the brake piston 4, and fixes coil springs 6 that are equally and annularly arranged to one annular retainer 61 so that it can be energized toward the brake disk 5 over the entire periphery of the brake piston 4.
      COPYRIGHT: (C)2005,JPO&NCIPI