| 主权项 |
1. A hydraulic damper comprising:
a bladder made of elastic material and formed into a cylindrical shape having a spherical closed end portion at its one end and an open end portion at its the other end, the open end portion including an annular flange portion extending outwardly in the radial direction; a core including an inserted portion to be inserted into the bladder and an annular flange portion extended outwardly in the radial direction and contacted with an end face of the open end portion of the bladder, the inserted portion having a large-diameter portion to be fitted in the open end portion of the bladder to seal the open end portion in a liquid-tight manner, a small-diameter portion extending in the bladder from the large-diameter portion toward the spherical closed end portion of the bladder and a gradually-changing diameter portion formed between the large-diameter portion and the small-diameter portion and forming an air chamber in the bladder together with the small chamber; and a plug accommodating the annual flange portion of the bladder and the annual flange portion of the core and binding the bladder to the core at the annual flange portion of the bladder and the annual flange portion of the core, wherein the hydraulic damper is disposed in a discharge-side passage of a hydraulic pump. |
