The disclosed head-mounted device may include a frame, a temple, at least one cable communicatively coupled to the temple and the frame, and a hinge assembly coupling the temple to the frame. The hinge assembly may include (1) a stationary member coupled to the frame, (2) a rotary member coupled to the temple and rotatable with respect to the stationary member about a rotational axis, (3) a wiring passage defined within the stationary member and the rotary member, the wiring passage surrounding and extending along the rotational axis and configured to accommodate at least one cable passing therethrough, and (4) a biasing member positioned to apply a biasing force to hold the rotary member in one of a plurality of selected orientations relative to the stationary member. Various other devices, assemblies, systems, and methods are also disclosed.

Example embodiments provide mechanical dampers. The mechanical dampers may be applied to dissipate energy in a structure that arises for example from a dynamic load such as seismic activity, vehicle impact, vibration of the structure, wind forces, an explosion, etc. The damper comprises a pair of clamping plates. A shear plate is held between the clamping plates. The shear plate is movable in transverse directions relative to the clamping plates. The damper also comprises a conical wedge coupled between one of the clamping plates and the shear plate. The conical wedge comprises a female conical element and a male conical element that projects into a conical indentation of the female conical element.

An adjustable vibration isolator for limiting transfer of vibrations from a first element to a second element coupled to the first element. The isolator includes conical disc spring members, each having a first end including a central opening, a central axis, and a second end opposite the first end. The second end includes an outer edge of the spring member. A spacer is coupled to each spring member so as to enable a transfer of forces between the spring member and the spacer. Spring member deflection resistance mechanisms are operable to adjustably resist movement of the outer edges of the spring members in directions radially outwardly during loading of the spring members. Resistance of movement of the outer edges of the spring members enables control of a force required to deflect the spring members, and control of the force-deflection curve of the vibration isolator.

Provided is an energy storage structure, comprising a housing and a piston. An accommodating cavity and a piston cylinder part communicating with each other are arranged within the housing. The piston is slidably and sealingly arranged within the piston cylinder part for transferring impact energy. A self-pressure of an energy storage medium, arranged within the accommodating cavity and the piston cylinder part, acts on the piston, tending to push the piston to move. An energy storage structure provided by the present invention has a simple structure, is convenient for use, and can ensure that a thrust or impact force remains unchanged or slightly changes during operation, to achieve stable release of potential energy. Moreover, the adjustment of the thrust or impact force can be achieved by changing the temperature of the energy storage medium in the accommodating cavity, thereby achieving change in total impact energy of the energy storage structure.

An adjustable vibration isolator for limiting transfer of vibrations from a first element to a second element coupled to the first element. The isolator includes conical disc spring members, each having a first end including a central opening, a central axis, and a second end opposite the first end. The second end includes an outer edge of the spring member. A spacer is coupled to each spring member so as to enable a transfer of forces between the spring member and the spacer. Spring member deflection resistance mechanisms are operable to adjustably resist movement of the outer edges of the spring members in directions radially outwardly during loading of the spring members. Resistance of movement of the outer edges of the spring members enables control of a force required to deflect the spring members, and control of the force-deflection curve of the vibration isolator.

A vibration isolator mechanism is provided for limiting transfer of vibrations from a first element to a second element coupled to the first element. The vibration isolator mechanism may include a vibration isolator structured to provide a quasi-zero/negative stiffness response to a force applied to the vibration isolator when the applied force is within a predetermined range. The vibration isolator mechanism may also include a force application mechanism structured to apply a force to the vibration isolator. The vibration isolator mechanism may also include a force adjustment mechanism structured to adjust the force applied to the vibration isolator by the force application mechanism so that the applied force is within the predetermined range.

An energy-absorbing structure for a vibration isolator includes a conical disc spring member having a first end including a central opening and a second end opposite the first end. The structure also includes at least one spacer having a base portion with a first side. The base portion first side defines a cavity structured to receive therein a second end of the spring member. The cavity has a floor, and a second end of the spring member is positioned in contact with the floor. The floor includes an opening formed therein and positioned so as to reside opposite the first end of the spring member when the second end of the spring member is positioned in contact with the cavity floor. The opening is structured to receive at least a portion of the first end of the spring member therein during an inversion of the spring member.

Presented herein, inter alia, are suspension system components having tuned accumulator sizing and/or stiffness. Such suspension system components are envisioned for use in a distributed active suspension system of a vehicle. In particular, through appropriate sizing of accumulators of a suspension system component of a vehicle, ride quality of the vehicle may be improved and so called rough ride issues may be precluded. Alternatively or additionally, various valves or alternative compliant mechanisms may be included in the suspension system component, so that desirable performance may be obtained for a range of operating conditions.

An apparatus includes at least two disk spring washers, at least one ring-shaped outer spacer coupled to the outer edges of one or two of the disk spring washers, and at least one ring-shaped inner spacer coupled to the inner edges of one or two of the disk spring washers. The apparatus also includes a central shaft concentric with the disk spring washers, the outer spacers, and the inner spacers. The apparatus also includes a bottom attachment portion coupled to the bottom of the central shaft to support the at least two disk spring washers, and a top attachment portion configured to slide vertically along the central shaft. The top attachment portion is configured to, with an application of a downward force, compress the at least two disk spring washers.

Provided is an energy storage structure, comprising a housing and a piston. An accommodating cavity and a piston cylinder part communicating with each other are arranged within the housing. The piston is slidably and sealingly arranged within the piston cylinder part for transferring impact energy. A self-pressure of an energy storage medium, arranged within the accommodating cavity and the piston cylinder part, acts on the piston, tending to push the piston to move. An energy storage structure provided by the present invention has a simple structure, is convenient for use, and can ensure that a thrust or impact force remains unchanged or slightly changes during operation, to achieve stable release of potential energy. Moreover, the adjustment of the thrust or impact force can be achieved by changing the temperature of the energy storage medium in the accommodating cavity, thereby achieving change in total impact energy of the energy storage structure.