4results about How to "Improved impact protection" patented technology

The invention relates to the technical field of automobile bodies, in particular to an automobile body in white and an automobile. The body-in-white comprises a top cover assembly, a front wall assembly, a rear wall assembly and a floor assembly, the front wall assembly comprises an air window upper cross beam with the cross section being a closed cross section, the rear wall assembly comprises a rear wall plate, a rear wall upper cross beam and two rear wall vertical beams, and the rear wall plate and the rear wall upper cross beam are fixedly connected and define the closed cross section; the rear wall plate and the rear wall vertical beam are fixedly connected and define a closed section. The top cover assembly comprises a beam frame assembly and a cover plate, the beam frame assembly comprises two top longitudinal beams, and the bottom face of the cover plate and the top longitudinal beams are fixedly connected and define a closed section. The front end of the top longitudinal beam is fixedly connected with the air window upper cross beam, and the rear end of the top longitudinal beam is fixedly connected with the rear wall upper cross beam and one corresponding rear wall vertical beam; the floor assembly comprises a floor mask and two bottom plate frameworks, the floor mask and the two bottom plate frameworks are partially overlapped and jointly define two floor closed sections, and the rear wall vertical beams correspond to the floor closed sections one to one and are fixedly connected with the floor closed sections.

This invention relates to a one-piece molded Whipple's Shield impact protection structure textile composite material and its preparation method. The product comprises, from top to bottom, an impact-facing fabric layer, a spacer fabric layer, and a back fabric layer. The impact-facing fabric layer is a single-layer or multi-layer fabric, with adjacent layers bonded together by resin. The spacer fabric layer is a hollow multi-layer structure consisting of a top layer, a bottom layer, and a spacer layer. The back fabric layer is also a multi-layer fabric, with adjacent layers bonded together by resin. The spaces between the impact-facing fabric layer and the top layer of the spacer fabric layer, as well as between the bottom layer of the spacer fabric layer and the back fabric layer, are filled with resin. Resin is impregnated between the back fabric layer, the spacer fabric layer, and the impact-facing fabric layer using a vacuum-assisted resin transfer molding process. After impregnation, the vacuum is removed, and the product is cured and demolded to obtain the final product. This invention features a simple preparation method; the product has high energy absorption, low specific gravity, high damage tolerance, and good impact protection performance.

This application relates to the field of vehicle body technology and provides a crash beam assembly and a vehicle equipped with it. The crash beam assembly includes a crash beam and energy-absorbing boxes disposed at both ends near the crash beam. Each end of the crash beam has a vehicle body connection portion, and both ends of the crash beam form a vehicle body connection end directly connected to a longitudinal beam of the vehicle body. The energy-absorbing boxes at each end are connected to the same end of the vehicle body connection end, and each energy-absorbing box is connected to the side of the same end of the vehicle body connection end facing away from the longitudinal beam of the vehicle body. This application allows for maximum design space for the energy-absorbing boxes, which helps to increase the energy-absorbing length of the energy-absorbing boxes, improve the energy-absorbing effect of the energy-absorbing boxes, and thus enhance the collision protection effect of the crash beam assembly.

The invention discloses a protective structure of a rotary power device, which relates to the technical field of unmanned equipment accessories and comprises a protective net assembly and a connecting assembly. The protective net assembly is in an ellipsoid shape and used for being arranged outside a propeller of the rotating power device in a covering mode. A plurality of through holes which are uniformly distributed are formed in the peripheral side of the protective net assembly, a flow guide structure is further arranged on the inner side of the protective net assembly, and the flow guide structure is configured to guide fluid to flow in the preset direction when the propeller rotates so as to discharge impurities in the through holes; the connecting assembly is used for fixing the protective net assembly to a protected device. Based on the technical scheme disclosed by the invention, the collision protection capability and the equipment safety can be improved, self-cleaning can be realized, the flow resistance can be reduced, the endurance time of the equipment can be prolonged, and the anti-winding effect can be greatly improved.