| 摘要 |
<p>PURPOSE:To prevent the mutual interference between the first coil spring and the second coil spring by providing a guide part supporting the second coil spring on the side of the surrounding wall of a piston in which the first coil spring and the second coil spring are installed. CONSTITUTION:In an accumulator chamber 3, the first coil spring 8 energizing a piston in the direction of the arrow A and the second coil spring 9 which energizes a division wall 5 in the position of the arrow A only when the position of the division wall 5 lies between a position displaced toward the position of the arrow B from the position of the arrow A and the position of the arrow B are arranged. Inside the division wall 5 in which the first coil spring 8 and the second coil spring 9 are arranged, a convex guide part 10 having a smaller diameter than the internal peripheral diameter of the second coil spring 9 is provided so that the internal peripheral side of the second coil spring 9 may be supported even when the division wall 5 is placed in the position of the arrow A.</p> |
