2 results about "Collapsible tube" patented technology

This invention belongs to the field of vehicle safety technology and discloses a constant-resistance buffer vehicle energy-absorbing box, including a support tube, a collapsible tube, a pressure-reinforcing spherical crown, and a radial constriction tube. The support tube is slidably connected inside the collapsible tube, and the end of the support tube near the collapsible tube receives the pressure-reinforcing spherical crown, with the support tube and the pressure-reinforcing spherical crown in spherical contact. The inner diameter of the pressure-reinforcing spherical crown is a variable-diameter through hole. The end of the collapsible tube away from the support tube is connected to the radial constriction tube. The other end of the radial constriction tube is interference-fitted to the variable-diameter through hole. The inner collapsible tube structure of this invention can withstand a certain amount of off-center impact. After exceeding the bearing capacity of the inner collapsible tube structure, the radial constriction tube and the pressure-reinforcing spherical crown can bend and deflect with the collapsible tube, and the radial constriction tube and the pressure-reinforcing spherical crown can also remain coaxially aligned, ensuring that the radial constriction tube undergoes constant-resistance deformation after passing through the pressure-reinforcing spherical crown and does not get stuck. The constant-resistance deformation buffer of the vehicle energy-absorbing box generates minimal support reaction force, minimizing damage to people and vehicles, and greatly improving the passive safety of the vehicle.

An apparatus for facilitating control of fluid or slurry movement in a collapsible tube is provided. The apparatus includes the tube. The tube includes first and second opposing wall portions having circumferentially varying thickness including first and second maximum thicknesses respectively, the first and second maximum thicknesses disposed on opposite sides of the tube, and third and fourth opposing wall portions between the first and second opposing wall portions, the third and fourth opposing wall portions having third and fourth circumferentially minimum thicknesses respectively, the third and fourth minimum thicknesses disposed on opposite sides of the tube about halfway between the first and second maximum thicknesses, wherein the first and second opposing wall portions are configured to be engaged by a tube engager to cause the tube to fold at the third and fourth minimum thicknesses to seal the tube. Other apparatuses, systems, and methods are disclosed.