Patent ID: 6491586
Filing Date: 2002-12-10
Classification: F16H,F16L

Abstract:
A flow passage structure for shaft-press-fitted flange members, comprising:a flange member containing a flange portion and being provided with a press-fit bore extending along a longitudinal axis and being opened at least one axial end thereof, a shaft member press-fitted into the interior of the press-fit bore, first flow passages formed in the shaft member, blind bores formed so as to extend linearly in a direction which is at right angles to the shaft axis from outer circumferential surfaces of the flange portion of the flange member, and said bores further extending transversely through the press-fit bore, and having closed end portions in an inner portion of the flange portion, and communication bores formed to extend from a side surface of the flange member in an axial direction and to communicate with parts of the blind bores which extend from the press-fit bore to the closed end portions thereof, second flow passages being formed of the parts of the blind bores which extend from the press-fit bore to the closed end portions thereof, and the communication bores, and the shaft member being press-fitted into the press-fit bore so that the portions of the second flow passages which are opened in the press-fit bore and the first flow passages communicate with each other, whereby the first and second flow passages are communicated with each other.