| 摘要 |
<p>PURPOSE:To protect a diaphragm from wear and damage by forming a reservoir by stopping up with the diaphragm the opening end of the larger-diametered portion of a stepped through hole which is formed in a caliper and in which a support shaft is fitted slidably. CONSTITUTION:A support shaft 1 is slidably fitted in the smaller-diametered portion 15 of a stepped through hole 15-15' bored in a caliper 3, and is prevented from slipping off in the axial direction by a flange 2 and a plug 5. The plug 5 stops up a cylinder 6 of an oil-pressure generator 4 incorporated in the shaft 1. A diaphragm 17 is fixed in position by the screwing of a cap 19 having an air vent 20, and there is formed a reservoir 22 between the opening end of the larger-diametered portion 15' of the hole 15-15' and the cap 5. Irrespective of the charged oil amount, the diaphragm 17 scarecely contacts other parts and scarecely receives vibrations with great influence mainly in the radial direction of the shaft 1; therefore, the diaphragm 17 can be protected from wear and damage.</p> |
