Showa Corporation

Astemo, Ltd.

Satomi Hojo

Gota Nakano

Seiryo Konakai

Nobuyuki Muraguchi

This hydraulic damping device comprises a cylinder for containing oil; a reservoir chamber R which is provided in the outer part of the cylinder and in which liquid accumulates; a piston provided so as to be axially movable within the cylinder and dividing the space within the cylinder into a first oil chamber and a second oil chamber, which contain oil; a baffle member provided as a separate element from the cylinder, the baffle member having a body which is provided in the reservoir chamber R, and also having a protrusion which protrudes from the body, the baffle member preventing the waving of the surface of oil in the reservoir chamber R; and a limiting section (first section to be held) provided to the baffle member and limiting the movement of the baffle member on both one side and the other side in the axial direction.

Hydraulic damping device

The hydraulic shock absorber includes a cylinder containing a fluid, a damper case positioned outside the cylinder to form a reserving chamber, a piston housed inside the cylinder, a piston rod supporting the piston, a rod guide covering one end of the cylinder, and a guide bushing provided with a through hole through which the piston rod penetrates. The rod guide has an outer circumferential groove formed by spacing apart at least a part of the rod guide from the cylinder in a circumferential direction of the cylinder for allowing the fluid to flow from inside of the cylinder to the reserving chamber, and has an inner circumferential groove for supplying the fluid into an inner circumferential gap between an inner circumferential surface of the guide bushing and an outer circumferential surface of the piston rod as the fluid flows through the outer circumferential groove.

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Gyoda, Japan

Satomi Hojo