62results about How to "Effectively absorb impact energy" patented technology

A flip-up type hood for a vehicle, includes a vehicle body forming the vehicle, a hood body pivotally supported by the vehicle body through a pair of hood hinges attached to a rear end of hood body, and actuators provided in the vehicle body to apply a flip-up forces on rear portions of the hood body 10 and wires for connecting a designated part of the hood body with the vehicle body. In the hood, a length of each wire is established so as to allow the wire to be strained on condition that the hood body is flipped up. In operation, the strained wires operate so as to constrain the hood body to the side of the vehicle body, it is possible to suppress the rear portion of the hood body from being flipped up excessively and also possible to prevent an occurrence of flip-flop action of the hood body when the rear portions of the hood body is raised by the actuators.

A roof airbag apparatus, may include an inflator, a housing mounted to an opening frame provided in a vehicle roof, the opening frame defining an opening therein to receive the housing, an airbag cushion contained in the housing, the airbag cushion being deployed downwards by gas supplied from the inflator to protect a passenger, an airbag door coupled to the housing by a hinge to support the airbag cushion, and angle limiting means for limiting a rotating angle to a predetermined angle when the airbag door is rotated to open.

An energy absorbing tubular structure is formed of a molded or extruded polymer. The tube has a quadrangular cross-section with rounded corners. The walls of tube are corrugated with alternating convex and concave corrugations surfaces having a continuous constant radius, preferably with no flat spots. The corrugated walls have a constant thickness. The corrugations progressively deform during impact thereby providing a near perfect square wave force vs. deflection energy absorption curve at any predetermined nearly constant force level. The tube may be filled with polymer foam to vary the impact performance of the structure.

The invention relates to a shock-absorption buffer shaft. The shock-absorption buffer shaft comprises an input shaft, an input end cover, a force transfer pin, an input toothed sleeve, an input toothed wheel, a double toothed wheel, a spring, an output toothed sleeve, an output toothed wheel, an output shaft, an output end cover, a limiting bolt, a fastening bolt and an external sleeve. Force is transferred to the input toothed sleeve by virtue of the teeth of the first internal toothed ring of the input toothed sleeve in a manner of compressing a spring through the teeth of an external toothed ring on the input toothed wheel, later the force is transferred to the double toothed wheel by virtue of the teeth of the first external toothed ring of the double toothed wheel in a manner of compressing the spring through the teeth of the second internal toothed ring of the input toothed sleeve, then the force is transferred to the output toothed sleeve by virtue of the teeth of the first internal toothed ring of the output toothed ring in a manner of compressing the spring through the teeth of the second external toothed ring of the double toothed wheel, and then the force is transferred to the output toothed wheel by virtue of the teeth of the external toothed ring of the output toothed wheel in a manner of compressing the spring through the teeth of the second internal toothed ring of the output toothed sleeve, and finally, the output toothed wheel is used for transmitting the torque by virtue of the force transfer pin through the output shaft.

An air bag device of the present invention includes an bag member formed by a circular front-side cloth and a circular reverse-side cloth which are sewn together at their outer peripheral edge portions. The air bag device is provided with an annular lid member for closing a plurality of gas discharge portions formed in the reverse-side cloth. Therefore, in this air bag device, the bag member can be instantaneously inflated and expanded to effectively restrain the passenger and also to effectively absorb an impact energy acting on the passenger.

An engine hood structure including a hood panel, and a porous metal layer disposed on an inside of the hood panel. The porous metal layer has a density increased in a direction extending from an outer periphery of the engine hood structure toward a central portion of the engine hood structure. The porous metal layer is constructed such that a plateau stress generated in the porous metal layer upon a compression test is increased in a direction extending from an outer periphery of the engine hood structure toward a central portion of the engine hood structure.