摘要:
The vibration suppression system (601) includes a vibration isolator (401) located in each corner in a four corner pylon mount structural assembly. The combination of four vibration isolators (401), two being forward of the transmission (607), and two being aft of the transmission (607), collectively are effective at isolating main rotor vertical shear, pitch moment, as well as roll moment induced vibrations. Each opposing pair of vibration isolators (401) can efficiently react against the moment oscillations because the moment can be decomposed into two antagonistic vertical oscillations at each vibration isolator (401). A pylon structure (615a, 615b) extends between a pair of vibration isolators (401) thereby allowing the vibration isolators (401) to be spaced a away from a vibrating body (607) to provide increased control.
摘要:
A damping system for fittings, in particular for domestic appliances and furniture, comprises a first fitting part (2) which can be moved relative to a second fitting part (3), wherein a damping element (4, 4') with a housing (5) and a piston (7, 14), which is mounted such that it can move in the housing (5), is provided in order to brake the relative movement of the first fitting part (2) to the second fitting part (3) before an end position is reached, wherein a knitted fabric (6) comprising threads is arranged in the housing (5), it being possible for said knitted fabric to be compressed by the piston (7, 14) for the purpose of damping the movement of the fitting parts (2, 3).
摘要:
A mirror is disclosed for use in a limited rotation motor system, wherein the mirror includes a body, an aperture within the body, and a high density material within the aperture. The body, formed of one or more materials, has an exposed mirror surface and is mountable with the limited rotation motor system for rotation with respect to an axis of mirror rotation. The aperture is positioned at least proximate to a portion of the axis of mirror rotation. The high density material is provided within the aperture such that it is capable of movement within the aperture, and the high density material has a density that is greater than a density of the material of the body of the mirror.
摘要:
A damping and shock absorbing method and apparatus for permanent or non-permanent use in the human body consists out of a shape memory alloy material which is cycled through the stress-strain hysteresis to dissipate energy for an effective damping. A sufficiently high pre-stress is applied to the damping element(s) to ensure that the damping working range is within the superelastic cycle. The damping apparatus can be designed to work in tension or compression or - by combination of compression and tension elements - both in tension and compression. Moreover, damping elements from a shape memory alloy can be designed to work also in flexion and extension as well in rotation. The damping apparatus can be designed to have a stroke and force suitable for use in the human body by the design, the structure and the chemical composition of the shape memory alloy and their pre-set properties, such as plateau stresses of the superelastic cycle depend on the ambient temperature, the force of damping elements can also be changed in-situ by changing the temperature of the damping elements. The damping elements out of a shape memory alloy can be combined with elastic elements out of other materials to achieve stress- strain behaviour more suitable for use in the individual human body.
摘要:
A vibrating toothbrush is provided with vibration-isolating zones that substantially isolate vibrations in the head and reduce vibrations transmitted to the handle without sacrificing structural integrity around the vibration-isolation zones. Such zones may generally comprise neck material that is reduced in cross-section, thinned, replaced by dampening material, or removed altogether to create transmission-inhibiting voids. The vibration-isolating zones may be further supported by the housing of the vibratory element to maintain the structural integrity around the zones and to thereby alleviating weakness conditions that might subject the toothbrush to fatigue and breakage conditions.
摘要:
A shaft assembly includes: a shaft (1); and a rolling bearing (3) for rotatably supporting the shaft (1). The shaft (1) has a hollow configuration and is provided with a different nature member (25), formed from a material different from that forming the shaft (1), in a hollow portion (24) thereof. Thus, the shaft assembly accomplishes torque reduction by reducing the frictional resistance of the bearing (3) and is adapted to reduce vibrations and noises associated with the use of the rolling bearing (3).
摘要:
A damping and shock absorbing method and apparatus for permanent or non-permanent use in the human body consists out of a shape memory alloy material which is cycled through the stress-strain hysteresis to dissipate energy for an effective damping. A sufficiently high pre-stress is applied to the damping element(s) to ensure that the damping working range is within the supererlastic cycle. The damping apparatus can be designed to work in tension or compression or - by combination of compression and tension elements - both in tension and compression. Moreover, damping elements from a shape memory alloy can be designed to work also in flexion and extension as well in rotation. The damping apparatus can be designed to have a stroke and force suitable for use in the human body by the design, the structure and the chemical composition of the shape memory alloy and their pre-set properties, such as plateau stresses and transformation temperature. Since plateau stresses of the superelastic cycle depend on the ambient temperature, the force of damping elements can also be changed in-situ by changing the temperature of the damping elements. The damping elements out of a shape memory alloy can be combined with elastic elements out of other materials to achieve stress-strain behaviour more suitable for use in the individual human body.
摘要:
A cushioning member is located between each support frame and the corresponding side of the shutter. The cushioning member includes a pair of belt-shaped base members and pile yarns bridging between the base members. Some of the pile yarns are cut at intermediate portion between the base members, which forms opposing first and second cut pile yarns with a cut in between. One of the base members is attached to each support frame, and the other base member contacts the shutter. The cut permits the cushioning member to flexibly respond to movements of the shutter and satisfactorily exerts a cushioning function to suppress swaying of the shutter.
摘要:
L'invention concerne un dispositif d'amortissement de vibrations pour le montage d'un premier appareil (1), source de vibrations, sur un second appareil (2), soumis à des contraintes thermiques et susceptible de recevoir et de transmettre les vibrations, le dispositif comprenant des moyens de découplage de transmission (22, 23, 24) des vibrations réalisés en un matériau de friction. L'invention concerne également un moteur à combustion interne comprenant un tel dispositif d'amortissement et un véhicule automobile comprenant un tel dispositif d'amortissement.
摘要:
A hollow impact absorbing body (1) for a vehicle manufactured by blow-molding thermoplastic resin and internally mounted on vehicle component members for preventing the impact absorptivity of the recessed ribs to be lowered by buckling and preventing resin accumulation from occurring in a blow molding process, comprising walls (3) and (4) opposed to each other, wherein the tip parts of the plurality of recessed ribs (5) and (6) formed by recessing the walls toward the other opposed walls are welded to each other, the height of the recessed ribs from the walls to welded surfaces (7) is set to 15 to 45 mm and the thickness of all the ribs is 30 to 90 mm, and connection ribs for connecting the adjacent recessed ribs to each other are provided to support the recessed ribs, whereby the accumulation of the resin can be prevented by providing swelled parts at parts of the weld surfaces.