| 摘要 |
<p>PURPOSE:To provide an accumulator which is simple without complicating the structure, and compact-sized, by which the set time for gear stage pressure can be secured to be long by perceiving a member for controlling operating oil pressure. CONSTITUTION:In an accumulator comprising a back pressure chamber 301 to which line pressure is supplied, a pressure accumulating chamber 302 for accumulating the pressure of operating oil supplied for connection of 3-4 clutch, and a piston 303 which strokes while partitioning between the back pressure chamber 301 and the pressure accumulating chamber 302, a limiting and discharging means 315 is provided for limiting operating oil in the main pressure accumulating chamber 302a through an orifice 314 by the stroke of the piston 303 to the back pressure chamber 301 side and discharging the same to a drain passage 313. In the process from the midway of the stroke of the piston 303 to the vicinity of the stroke end, the limiting and discharging means 315 communicates a third port 316 with the main pressure accumulating chamber 302a so that operating oil in the main pressure accumulating chamber 302a is limited by the orifice 314 in a U-shaped pipe 318 and discharged to the drain passage 313 through 2 sub-pressure accumulating chamber 302b.</p> |
