| 摘要 |
PURPOSE: Sealing structure of a kickdown servo is provided to prevent a leakage of an actuating fluid between a case and a servo retainer by changing the shape of a chamfer surface formed between a first stepped surface and a second stepped surface to eliminate breakage of an O-ring in assembling. CONSTITUTION: A kickdown servo comprises a case(10) having an uneven groove part for installation of a snap ring(20) and forming a chamfer surface of an inclined form to a stepped part, and a servo retainer(12) assembled to the inside of the case after an O-ring(22) is mounted to the outer peripheral surface. In sealing structure of the kickdown servo, a starting point of the chamfer surface is set up to a position recessed toward a bottom surface part from the inlet of the uneven groove part and the chamfer surface has a dual rake angle.
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