A wideband vibration suppression device utilizing properties of a sonic black hole, comprising: a vibration absorber (101) comprising a uniform portion (1011) of a fixed thickness and a conical portion (1012) integrally connected to the uniform portion (1011), the conical portion (1012) extending from the junction in such a manner that the thickness thereof gradually decreases from the thickness (d1) of the uniform portion (1011) to a predetermined thickness (d2); and a damping layer (102) attached to the conical portion (1012) of the vibration absorber (101).

A cage-type hyperbolic spring structure and a socket are provided. The cage-type hyperbolic spring structure is applied in a jack terminal. The cage-type hyperbolic spring includes multiple copper hyperbolic columnar canted springs and a machined body. The multiple copper hyperbolic columnar canted springs are annularly wound into a closed cylindrical annular structure by laser spot welding or a thin hollow tube, the cylindrical annular spring structure is inserted into the machined body, and then a inclined riveting necked port at an end of a thin-walled tube ensures the cylindrical inclined spring not to fall off during plugging and unplugging of the male terminal and the female terminal, it may also employ an assembling method to install an elastic C-ring to press the end of the thin-walled tube tightly.

A bracket of a cylinder device includes: a tubular portion having a C-shaped cross section, holding an outer periphery of the outer shell, and having a slit in a front portion; and a pair of mounting portions and protruding outward in the radial direction from both ends of the tubular portion in the circumferential direction. The tubular portion includes a hole formed to permit insertion of the protrusion, from at least one side portion to the back portion of the tubular portion.

A cylinder unit includes a cylinder which is closed by a separate bottom. The cylinder is sealed by an annular seal which is accommodated in an annular groove. The annular seal is fixed to the cylinder by a disk element connected to the bottom. The bottom forms a first groove side surface of the annular groove, and the disk element forms a second groove side surface of the annular groove.

A damping valve includes a valve body has at least one through-flow channel for each flow direction of a damping medium through the valve body. Each through-flow channel connects an inlet to an outlet. a valve disk covers the through-flow channels at the outlet opening the valve disk has a first volume flow of the damping medium through the valve body, at least one pre-orifice in the valve disk and at least one pre-orifice throttle arrangement is arranged at least indirectly adjoining the valve disk and adapted to at least partially cover or open the pre-orifice depending on the flow direction of a damping medium. The pre-orifice throttle arrangement includes multiple structural component parts arranged coaxial to one another, at least two of the structural component parts are inseparably connected to one another.

An energy-absorbing assembly for a vehicle includes a carrier plate and a plurality of discrete energy-absorbing elements. The carrier plate includes a first polymer and a first plurality of reinforcing fibers. The plurality of energy-absorbing elements each includes a second polymer and a second plurality of reinforcing fibers. The plurality of energy-absorbing elements is fixed to the carrier plate. Each energy-absorbing element of the first plurality of energy-absorbing elements includes an elongated hollow structure defining a longitudinal axis extending nonparallel to the carrier plate. Another energy-absorbing assembly includes a carrier plate and a plurality of discrete energy-absorbing elements. The carrier plate includes a first polymer and a first plurality of reinforcing fibers. The plurality of energy-absorbing elements each includes a second polymer and a second plurality of reinforcing fibers. Each energy-absorbing element includes a transverse wall and is fixed to the carrier plate.

A viscous torsional-vibration damper has a damper housing with an axis of rotation, an annular working chamber filled with a damping medium, an inertia ring arranged inside the working chamber, and a cover for media-tight closure of the working chamber. The cover is connected to the damper housing peripherally on one side by a sequence of a butt seam and an overlap seam.

A hydraulic damper comprises an outer cylinder, and an inner cylinder slidably mounted within the outer cylinder for movement relative to the outer cylinder along a longitudinal axis. The inner cylinder has a circumferential wall circumscribing a bellows assembly. The bellows assembly comprises a first bellows section, a second bellows section, a damping plate attached to and separating the first and second bellows sections, a first closure element closing an end of the first bellows section opposite the damping plate to define a first chamber, and a second closure element closing an end of the second bellows section opposite the damping plate to define a second chamber. The first closure element is attached to the inner cylinder for movement therewith relative to the outer cylinder. The second closure element is also attached to the inner cylinder for movement therewith relative to the outer cylinder

The present invention relates to a method for fabricating a helical coil spring type seal. The method of the present invention is able to make the stacked layers of ring sharing the same center point during the making of the helical coil spring type seal.

A torque rod comprises: a first annular portion elastically connected to a first attachment member to be connected to a power unit; a second annular portion elastically connected to a second attachment member to be connected to a vehicle; a connection stay portion extending radially outward from an outer circumferential part of the second annular portion and connecting with an outer circumferential part of the first annular portion, and including an upper branch portion and a lower branch portion having lower bending strength than the upper branch portion; a wall portion connecting with the first annular portion and the connection stay portion, and forming a cavity to which part of the first annular portion is exposed; and a projection portion projecting in an axial direction of the first annular portion from a site of the first annular portion exposed to the cavity.