The present invention includes a first attachment member (11, 111), a second attachment member (12, 112), an elastic body (13, 113), a partition member (16, 116), and a movable member (41, 141). An orifice passage (24, 124), a plurality of first communication holes (42a, 142a), and a second communication hole (42b, 142b) are formed in the partition member (41, 141). A tubular member (21, 121) is disposed on a first wall surface (16b, 116b) in the partition member (16, 116). The plurality of first communication holes (42a, 142a) are open to both an inner portion (16f, 116f) and an outer portion (16g, 116g) on the first wall surface (16b, 116b), and one of the partition member (16) and the tubular member (121) forms an elasticity adjusting unit (Z).

An enclosure with a vortex-induced vibration suppression function and a method for suppressing vortex-induced vibration are provided. The enclosure is provided with suction through holes extending through a peripheral wall thereof, the suction through holes are distributed in a circumferential direction of the enclosure. The enclosure is further provided with a suction apparatus, and the suction apparatus can perform suctioning to the suction through holes from outside to inside, to restrain a boundary layer at an outer surface of the enclosure from being detached from the outer surface. By the suctioning, the boundary layer can be “adsorbed” on the outer surface of the tower, thereby restraining or directly preventing the boundary layer from being detached from the outer surface of the tower, and reducing or eliminating the cause of the vertex-induced vibration.

An engine damper includes a drive disc having a plurality of studs circumferentially arranged to be received in a flex plate and a driven disc connected to the drive disc by a resilient member. The driven disc defines a plurality of circumferentially arranged first holes arranged in a first pattern. A hub is configured to non-rotatably connect to a shaft. The hub defines a plurality of second holes circumferentially arranged in a second pattern that corresponds to the first pattern. Connectors are disposed in the first and second holes to connect the hub to the driven disc.

Various embodiments provide a bush for isolating vibrations, the bush comprising: a first anchor part defining a longitudinal axis; a second anchor part disposed coaxially with respect to the first anchor part; a first resilient body operably engaged with the first anchor part; a second resilient body operably engaged with the second anchor part; and an inertial mass element disposed between the first anchor part and the second anchor part. The inertial mass element is independently connected to the first resilient body and the second resilient body. Also, the first resilient body, second resilient body and inertial mass element are arranged to isolate vibrations between the first anchor part and the second anchor part within a predetermined operational frequency range. Further, the inertial mass element is arranged to isolate the first anchor part and second anchor part from dynamic stiffness increases associated with eigenmodes of the first resilient body and the second resilient body in the predetermined operational frequency range.

A diaphragm holder for an oleo-pneumatic-type shock absorber includes a tubular body made of thermoplastic material, having one end arranged to hold a diaphragm and an opposite end defining an arched bottom for withstanding pressure forces. An insert is housed in the bottom of the tubular body and is arranged to mechanically reinforce the bottom and to distribute the pressure forces evenly.

A fluid mount for a vehicle includes a main bush mounted on an outer circumferential surface of an inner pipe and to which an outer pipe is coupled so that a fluid-contained internal region is sealed, and a middle bush dividing the internal region into a front liquid chamber and a rear liquid chamber and configured to, when vibration is generated along an axial direction of the inner pipe, form a fluid path extending a vibration-generating direction to allow the fluid to selectively flow from the front liquid chamber to the rear liquid chamber or from the rear liquid chamber to the front liquid chamber in the internal region.

The present disclosure relates to a frequency sensitive shock absorber, and the frequency sensitive shock absorber includes a piston rod coupled so that one side is located inside a cylinder and the other side is located outside the cylinder, a main valve coupled to the piston rod and partitioning an inner space of the cylinder into a compression chamber and a tension chamber, a sub-piston rod coupled to one side of the piston rod and interlocked with the piston rod to reciprocate along a longitudinal direction of the cylinder, and a sub-valve module coupled to the sub-piston rod and generating a damping force according to a frequency during a tension stroke.

A torque limiter includes a friction mechanism, a pressure plate, a first side plate, an urging member, and a second side plate. The friction mechanism includes a first friction member and a second friction member. The pressure plate includes a first contact surface and a plurality of first drainage grooves. The first contact surface is a surface that makes contact with the first friction member. The first drainage grooves radially extend. The second side plate includes a second contact surface that makes contact with the second friction member. The second side plate is disposed on a second side with respect to the second friction member in an axial direction. The second side plate is attached to the first side plate to be unitarily rotated therewith.

A motor includes a case; and a partition that is fitted into the case and has an easily deformable part formed on an outer peripheral surface for dispersing and dissipating vibration transmitted between the case and the partition. A space is formed in the easily deformable part.

A flexible flywheel includes: a shaft fastening portion fixed to an end portion of an engine crankshaft; an annular inertia ring provided around the shaft fastening portion; a plurality of elastic spoke portions that extend in the radial direction between the shaft fastening portion and the inertia ring and connect the shaft fastening portion and the inertia ring to each other, and that absorb vibration acting on the crankshaft by undergoing deflection; and weight portions provided between adjacent elastic spoke portions, side edge-side boundary ends, to which boundaries with the weight portions are connected, are provided on both sides edges of the elastic spoke portion, respectively, when the elastic spoke portions are vibrated, stress concentrates on the side edge-side boundary ends.