A force damper arranged to progressively arrest a first force imparted by an object moving in a first direction, the force damper including a housing, a driving member and first and second resilient members. The housing includes a first end and a second end, the first end having a first surface, a second surface opposite the first surface and a first connection point secured to the first surface, and the second end having a through bore and a third surface opposingly disposed relative to the second surface. The driving member includes a first end, a second end and a shaft therebetween, the first end having a stop and the second end having a second connection point. At least one of the first and second resilient members is formed from a material that at least partially undergoes plastic deformation when the first force is arrested. The first and second resilient members are disposed between the stop and the third surface and impart a second force on the stop toward the second surface.

A crash box capable of easily deforming into a bellows shape and absorbing impact energy more reliably, and its manufacturing method are provided. The present disclosure is applied to a crash box which is partly deformed in an axial direction to absorb impact energy when the crash box receives an impact in the axial direction. A first layer made of metal and a second layer made of metal containing a larger volume of bubbles than that of the first layer are alternately formed in the axial direction in the crash box according to the present disclosure.

An impact mitigating assembly includes an elongate member formed from a plurality of triangulated cylindrical origami (TCO) unit cells that exhibit coupled rotational and axial motion. The unit cells include an end portion and a tubular member fixed to the end portion. The tubular member has a plurality of concave sides. Each side has a first triangular portion and a second triangular portion sharing an elastic connecting edge with the second triangular portion. The first triangular portion also shares an angled upright edge with the second triangular portion of an adjacent side. Compressing the tubular member longitudinally causes the connecting edge and the angled upright edge to elastically deform, for example by stretching, and causes the second end of the tubular member to rotate with respect to the first end of the tubular member.

Polymeric shock absorbing element for a vehicle including a substantially honeycomb structure having a plurality of channels which has a lateral external surface extending from a first open frontal end to a second open rear end, the shock absorbing element insertable and securable within an internal lateral cavity of a chassis of said vehicle, the internal lateral cavity being defined by at least two metallic plates. The lateral external surface includes at least one substantially planar face positioned on one side of the polymeric shock absorbing element and the additionally includes at least one metallic fixing element having a central portion which in turn includes a first central wall which is made integral with a corresponding substantially planar face of the lateral external surface, the at least one metallic fixing element additionally includes a plurality of side stiffeners which are weldable or made integral with the two metallic sheets.

A seismic isolation apparatus includes a laminated body having alternately laminated rubber plates and steel plates; a hollow portion provided inside the laminated body in a hermetically closed manner and extending in a laminated direction; a lead plug filled densely in the hollow portion and adapted to damp the vibration in a shearing direction of the laminated body by absorbing vibrational energy in the shearing direction; and a lid member having a semispherical concave surface which comes into contact with one end portion in the laminated direction A of the lead plug in order to guide and assist the plastic flow of the lead plug at one end portion in the laminated direction of the hollow portion in the deformation in the shearing direction of the lead plug.

The present invention relates to a sound-insulation shock-absorbing heat-resistant ABS resin composition for automotive interiors and a preparing method thereof. The resin composition comprises: 100 parts of ABS resin, 5-30 parts of heat-resisting agent, 5-20 parts of sound-insulation shock-absorbing polymer, 1-5 parts of hollow glass microspheres, 0.3-1.0 part of light stabilizer and 0.5-2.0 parts of auxiliary. The preparing method comprises the following steps: mixing the raw materials in a high-speed mixer, sending the mixture into a twin screw extruder via a metering device, melting and compounding the material under the delivering, shearing and mixing by screws; and performing extrusion, drawing, cooling and granulating. The method is simple and feasible; and the prepared resin composition has excellent sound-insulation and shock-absorbing effects and favorable mechanical properties, and is able to be applied in the field of automotive interiors.

A radically curable composition includes 100 parts by weight of a (meth)acrylic polymer (I) with an average of at least 0.8 radically-crosslinkable groups, 0.01 to 10 parts by weight of a radical polymerization initiator (II), and 10 to 100 parts by weight of a (meth)acrylate compound (III) having a rosin ester group.

A vehicle includes: a front room disposed at a front part of the vehicle in a longitudinal direction of the vehicle; a fuel cell stack disposed in the front room, the fuel cell stack including multiple cells stacked in the longitudinal direction; a bumper reinforcement disposed at a front part of the front room in the longitudinal direction; and a buffer member disposed between the fuel cell stack and the bumper reinforcement in the longitudinal direction. At least a part of the buffer member overlaps with the bumper reinforcement, as viewed from a direction along the longitudinal direction.

A shock absorber includes a bottom rim, a top wall comprising a raised central portion and a top rim, a side wall extending between the top and bottom rims, and a corrugation surrounding a periphery of the raised central portion that (i) connects the raised central portion to the top rim, (ii) descends to a depth below half a height of the side wall, and (iii) is separated by a distance from a surface. Impact forces imparted on the shock absorber are attenuated by a first amount in a first stage by resistive yielding of the side wall; by a second amount in a second stage by depression of the central portion and resistive yielding of the corrugation associated therewith; and by a third amount in a third stage by resistive yielding of the corrugation in response to a force applied to the top rim upon contact with the surface.

An impact absorber to be mounted between a vehicular panel and a vehicular interior part covering the vehicular panel from a vehicular interior side includes an opposite wall to be opposite the vehicular panel, outer walls extending from edges of the opposite wall toward a vehicular interior side, and an extended wall extending from the opposite wall toward the vehicular interior side and having a side edge connected to the one outer wall, and the extended wall having a thickness that is increased from a vehicular interior end thereof toward a vehicular exterior end thereof, and the extended wall having a cutout hole that is open toward a vehicular exterior side.