The rotary inertial mass damper has a configuration in which the rotary shaft of the oil-pressure motor rotates due to oil pressure of operating oil that is extruded from an oil chamber through reciprocating movement of the piston rod, and viscosity resistance is produced in operating oil that circulates in the connection pipes.

The rotary inertial mass damper has a configuration in which the rotary shaft of the oil-pressure motor rotates due to oil pressure of operating oil that is extruded from an oil chamber through reciprocating movement of the piston rod, and viscosity resistance is produced in operating oil that circulates in the connection pipes.

The present invention relates to, among other things, a rotational damper comprising a fluid-filled damper housing and within the damper housing a piston rotatably accommodated by a rotation axis of the rotational damper in a first direction and an opposite second direction with a piston rod extending in the direction of the rotation axis; whereby the piston has at least one opening with a flow cross-section which allows for the flow of fluid through the piston, whereby a total flow cross-section is calculated as the sum of the flow cross-sections of the at least one opening. A blocking device can be furthermore assigned to the piston which is capable of reducing the flow cross-section of at least one of the openings during a rotation of the piston in a first direction relative to a rotation of the piston in the second direction.

The present invention relates to, among other things, a rotational damper comprising a fluid-filled damper housing and within the damper housing a piston rotatably accommodated by a rotation axis of the rotational damper in a first direction and an opposite second direction with a piston rod extending in the direction of the rotation axis; whereby the piston has at least one opening with a flow cross-section which allows for the flow of fluid through the piston, whereby a total flow cross-section is calculated as the sum of the flow cross-sections of the at least one opening. A blocking device can be furthermore assigned to the piston which is capable of reducing the flow cross-section of at least one of the openings during a rotation of the piston in a first direction relative to a rotation of the piston in the second direction.

Shock absorbers (33) are attached to a press apparatus (10). The press apparatus (10) has a lower die unit (11) and an upper die unit (21) that is movable in vertical directions; the lower die unit and the upper die unit are capable of cooperating with each other to perform press-forming on a blank (W). The upper die unit (21) has an upper forming die (22) that serves as a forming die to perform press-forming on the blank (W) and upper blank holders (25) that partially serve as blank holders. The shock absorbers (33) are respectively disposed between the upper forming die (22) and the upper blank holders (25), and when the upper die unit (21) is moved upward away from the lower die unit (11) to open the upper and lower forming dies after press-forming is performed on the blank (W), impact applied to the upper blank holders (25) by the upper forming die (22) are respectively absorbed by the shock absorbers (33).

Shock absorbers (33) are attached to a press apparatus (10). The press apparatus (10) has a lower die unit (11) and an upper die unit (21) that is movable in vertical directions; the lower die unit and the upper die unit are capable of cooperating with each other to perform press-forming on a blank (W). The upper die unit (21) has an upper forming die (22) that serves as a forming die to perform press-forming on the blank (W) and upper blank holders (25) that partially serve as blank holders. The shock absorbers (33) are respectively disposed between the upper forming die (22) and the upper blank holders (25), and when the upper die unit (21) is moved upward away from the lower die unit (11) to open the upper and lower forming dies after press-forming is performed on the blank (W), impact applied to the upper blank holders (25) by the upper forming die (22) are respectively absorbed by the shock absorbers (33).

An SMA-STF based viscous damper includes a first connector, a piston rod, a piston which is sheathed on the piston rod; a damping cylinder; first and second end covers which are respectively provided at two sides of the damping cylinder; a second connector which is fixedly connected to the second end cover; and first and second SMA springs which are respectively sheathed on the piston rod. The damping cylinder has first and second damping cavities between which the piston is arranged. One end of the piston rod passes through the first end cover and is connected to the first connector, and the other end passes through the second connector. The first and second SMA springs are respectively held in the first and second damping cavities in an elastic state. The first and second damping cavities are respectively filled with the STF.

A shock absorber includes a cylinder and a piston. The piston is configured to partition an internal space of the cylinder into two oil chambers and is capable of sliding in an axial direction of the cylinder. The piston having formed therethrough a communication path configured to bring the two oil chambers into communication with each other. The shock absorber also includes a first rod and a second rod. The first rod extends in a first direction of the axial direction with respect to the piston. The second rod has a diameter larger than a diameter of the first rod, and extends in a second direction of the axial direction, which is opposite to the first direction, with respect to the piston. The shock absorber further includes a rod mounting member, which is provided on the first rod, and a cylinder mounting member, which is provided on the cylinder and arranged as offset from an axis of the cylinder.

A shock absorber includes a cylinder and a piston. The piston is configured to partition an internal space of the cylinder into two oil chambers and is capable of sliding in an axial direction of the cylinder. The piston having formed therethrough a communication path configured to bring the two oil chambers into communication with each other. The shock absorber also includes a first rod and a second rod. The first rod extends in a first direction of the axial direction with respect to the piston. The second rod has a diameter larger than a diameter of the first rod, and extends in a second direction of the axial direction, which is opposite to the first direction, with respect to the piston. The shock absorber further includes a rod mounting member, which is provided on the first rod, and a cylinder mounting member, which is provided on the cylinder and arranged as offset from an axis of the cylinder.

A damper assembly includes a housing defining at least one or more cavities. A piston is in operable communication with the housing. A rod end is operatively coupled to the piston, the rod end having at least two cartridges.