18 results about "Lower body structure" patented technology

A vehicle lower body structure reduces upward displacement of a tunnel section due to a collision load applied from a vehicle lateral side. The structure includes a tunnel section protruding upward in a central position of a front floor panel in a vehicle width direction; a pair of left and right side sills extending in a vehicle front-rear direction at opposing lateral ends of the front floor panel in the vehicle width direction; a floor cross member coupling the pair of left and right side sills in the vehicle width direction across the tunnel section and fixed to an upper surface of the front floor panel; and a battery unit disposed below the front floor panel. A portion of the floor cross member across the tunnel section is coupled to the tunnel section and the battery unit via a coupling member.

A vehicle lower body structure which efficiently transmits a side collision load from one side sill to the other side sill includes a pair of left and right side sills extending in a vehicle front-rear direction at opposed lateral ends of a front floor panel in a vehicle width direction; and plural floor cross members coupling the pair of left and right side sills in the vehicle width direction and fixed to an upper surface of the front floor panel. The floor cross members include a front cross member on a vehicle front side; a rear cross member on a vehicle rear side at a predetermined interval from the front cross member; and an intermediate cross member between the front cross member and the rear cross member in the vehicle front-rear direction and fixed to each of the front cross member and the rear cross member.

This invention discloses a topology optimization method for the stiffening layout of an integrated die-cast and extruded electric vehicle underbody structure, relating to the field of electric vehicles. The method involves finite element mesh generation for the electric vehicle underbody structure, classifying the mesh into extrusion meshes and casting meshes based on the processing technology used for the components. The finite element mesh within a single component is further subdivided into design domains and non-design domains. For the casting design domain, a mathematical model of casting constraints is established to optimize the stiffening of thin-walled die-cast parts. For the extrusion design domain, an extrusion process constraint is applied to establish a mathematical model to optimize the internal stiffening of the cross-section. The mathematical model is solved to obtain the density distribution of each element, determining the stiffening layout form that satisfies both comprehensive service conditions and dual manufacturing process constraints. Based on the calculated element density distribution and load transfer path, the topology optimization results are reconstructed into a CAD model or mesh model with stiffeners.

In order to suppress a side beam front end portion from collapsing and obtain a reaction force in a vehicle width direction against an impact load directed inward in the vehicle width direction input to the side beam front end portion at a small overlap collision, a vehicle lower body structure of the present invention is provided with: a side beam (10) disposed at a lower portion of a vehicle and at an outer side in the vehicle width direction, a closed cross section (10s) extending in a vehicle front-rear direction being formed by an inner side beam (11) and an outer side beam (21) in cooperation; a wheel (6) located in front of the outer side beam (21); an outer side reinforcing member (50) having a shape along a front side surface portion (271) and a side surface portion (24) of a front end portion (27) of the outer side beam (21), and being joined to the front end portion (27) from an inner side of the closed cross section (10s); and an inner side reinforcing member (60) linking between a front side surface portion (171) and a side surface portion (14) of a front end portion (17) of the inner side beam (11) in a cross shape.

This invention discloses a front lower body structure for a vehicle with improved rigidity, the front lower body structure comprising: a front rear lower member, a central floor side upper member, and a reinforcing bracket, the front rear lower member being connected from a front member arranged on one side of a fender to the interior of a longitudinal beam; the central floor side upper member being arranged in the longitudinal direction of the vehicle and extending from the upper surface of the front bulkhead to the central floor panel; the reinforcing bracket connecting the front rear lower member to the central floor side upper member.

The embodiment of the utility model provides a lower vehicle body structure and a vehicle, and belongs to the technical field of vehicle parts, and the lower vehicle body structure comprises a doorsill beam, an inner exhaust pipe, an outer exhaust pipe and a limiting connecting assembly. A containing cavity is formed in the doorsill beam, and an opening communicating with the containing cavity is formed in one side of the doorsill beam; the inner exhaust pipe is arranged in the containing cavity, and the outer exhaust pipe is located on one side of the doorsill beam and communicates with the inner exhaust pipe through the opening; and the limiting connecting assembly is arranged in the containing cavity, the threshold beam and the inner exhaust pipe are connected through the limiting connecting assembly, and the limiting connecting assembly is configured to stretch out and draw back in the preset direction when the inner exhaust pipe vibrates so that the inner exhaust pipe can move relative to the threshold beam. According to the lower vehicle body structure provided by the embodiment of the invention, the problem of resonance of the threshold beam caused by vibration of the exhaust pipe can be avoided, so that the NVH performance of the vehicle is improved.

The invention discloses a casting and extruding integrated electric automobile lower body structure reinforcement layout topological optimization method, and relates to the field of electric automobiles, the method comprises the following steps: carrying out finite element mesh division on an electric automobile lower body structure, and classifying finite element meshes into extrusion part meshes and casting part meshes according to the types of processing technologies adopted by parts; carrying out secondary division on a finite element grid in a single part, and subdividing the finite element grid into a design domain and a non-design domain; aiming at a casting design domain, a mathematical model of casting constraint is established, and optimization of external reinforcement of the thin-wall die casting is realized; applying extrusion process constraint to an extrusion design domain to establish a mathematical model, and realizing optimization of internal reinforcement of the extrusion structure; solving the mathematical model, obtaining the density distribution of each unit, and determining a reinforcement layout form meeting the comprehensive service condition and the dual manufacturing process constraint; and reconstructing a topological optimization result into a CAD (Computer Aided Design) model or a grid model with reinforcing ribs according to the calculated unit density distribution and load transfer path.

A vehicle lower body structure ensures desired side collision performance when a floor panel is joined to a portion higher than a center position of a side sill. A floor cross member coupling a pair of left and right side sills includes an upper member fixed to a floor panel upper surface protruding upward in the vehicle, and having a cross member upper surface facing upward in the vehicle; and a lower member fixed to a floor panel lower surface and protruding downward in the vehicle. The side sill and the floor cross member are joined to align positions of a side sill upper surface and the cross member upper surface in a vehicle up-down direction, and form a closed cross section with the front floor panel disposed between the upper member and the lower member, the upper member, and the lower member in a front-rear direction vertical cross section.

The utility model relates to the technical field of humanoid robots, disclose a humanoid robot lower body structure and humanoid robot thereof, including first driver, second driver, third driver, fourth driver, fifth driver, sixth driver, waist structure, thigh structure, shank structure and foot structure, waist structure includes waist first support, waist second support, waist third support, waist connecting block and two waist connecting rods, through using six drivers, divide into two groups, three in each group, realize lower body structure multidirectional flexible movement, make lower body structure flexible simulation human leg's action. The multi -freedom degree design can improve the adaptability and stability of humanoid robot significantly, solve the problem that the flexibility, reliability is deficient when humanoid robot is applied in complex environment.

This application relates to a lower body structure and a vehicle. The lower body structure includes a sill beam, a seat crossbeam, and a battery pack. The first and second energy-absorbing zones of the sill beam can fully absorb collision energy, the bending zone provides reliable bending support, and the inclined structure of the load-bearing zone can effectively transfer the collision force to the seat crossbeam, avoiding insufficient performance caused by a single structure bearing all the collision force. The end of the seat crossbeam is fixedly connected to the sill beam and cooperates with the load-bearing zone, enhancing the connection stability between the seat crossbeam and the sill beam and effectively suppressing the upward flipping and bending tendency of the seat crossbeam during a side pole collision. The force of the bending zone can be transferred to the bottom guard plate assembly through the lower shell beam. The supporting functions of the lower shell beam and the bottom guard plate assembly, combined with the supporting function of the seat crossbeam, form a stable force transmission closed loop, improving the overall rigidity and strength of the lower body, preventing the bottom battery pack from being severely squeezed during a side pole collision, and ensuring the safety of the occupants and the battery pack.

The utility model provides a kind of lower body structure and including its hybrid car, lower body structure includes exhaust pipe threshold integrated structure and heat sink, exhaust pipe in exhaust pipe threshold integrated structure is worn in threshold, heat exchange pipe is set in the outer periphery of exhaust pipe and has communicating port;Heat sink includes multiple heat exchanger and the flow path switching component between multiple heat exchanger and communicating port is set, flow path switching component can selectively communicate one heat exchanger with communicating port, to make heat exchange pipe and corresponding heat exchanger communicate and form cooling circuit.Exhaust pipe is integrated with threshold, save the space occupied by exhaust pipe in lower body, save the space for the arrangement of power battery, utilize cooling medium in heat exchange pipe and exhaust pipe heat exchange, avoid high temperature exhaust pipe harm threshold and peripheral parts;Cooling medium after exhaust pipe heat exchange can select and heat exchange in multiple heat exchanger, to dissipate heat to outside, or utilize the heat of exhaust pipe.

The objective is to provide a vehicle lower body structure that can suppress upward displacement of the tunnel section due to lateral impact loads applied from the side of the vehicle. [Solution] The lower body structure of the vehicle 1 comprises a tunnel section 5 that protrudes upward at the center of the front floor panel 4 in the vehicle width direction, a pair of left and right side sills 3 that extend in the vehicle front-rear direction at both ends of the front floor panel 4 in the vehicle width direction, a floor cross member 6 that connects the pair of left and right side sills 3 in the vehicle width direction across the tunnel section 5 and is fixed to the upper surface of the front floor panel 4, and a battery unit 7 disposed below the front floor panel 4. The portion of the floor cross member 6 that straddles the tunnel section 5 is connected to the tunnel section 5 and the battery unit 7 via a connecting member 80.

The objective is to provide a vehicle underbody structure that can ensure desired side impact performance even when the floor panel is joined to the side sill above the center position in the vertical direction of the vehicle. [Solution] The lower body structure of the vehicle 1 comprises a floor cross member 6 connecting a pair of left and right side sills 3, an upper member 70 fixed to the upper floor panel surface 4a which is the upper surface of the front floor panel 4, and having a cross member upper surface 711 that protrudes upward of the vehicle and faces upward of the vehicle, and a lower member 80 fixed to the lower floor panel surface 4b which is the lower surface of the front floor panel 4, and protruding downward of the vehicle, and the side sills 3 and the floor cross member 6 are joined so that the upper side sill surface 3c and the cross member upper surface 711 are aligned in the vertical direction of the vehicle, and the front floor panel 4 positioned between the upper member 70 and the lower member 80, the upper member 70 and the lower member 80 form a closed cross section in the longitudinal direction.

The objective is to provide a vehicle underbody structure that can efficiently transmit side impact loads from one side sill to the other side sill. [Solution] The lower body structure of the vehicle 1 comprises a pair of left and right side sills 3 extending in the vehicle longitudinal direction at both ends in the vehicle width direction of the front floor panel 4, and a plurality of floor cross members 6 that connect the pair of left and right side sills 3 in the vehicle width direction and are fixed to the upper surface of the front floor panel 4. The floor cross member 6 comprises a front cross member 20 provided at the front of the vehicle, a rear cross member 40 provided at a predetermined distance from the front cross member 20 at the rear of the vehicle, and an intermediate cross member 30 provided between the front cross member 20 and the rear cross member 40 in the vehicle longitudinal direction and fixed to the front cross member 20 and the rear cross member 40, respectively.

The invention discloses a protective garment special for underground high-temperature operation and a using method thereof, and belongs to the technical field of protective garments for underground high-temperature environment operation. The protective garment comprises a protective garment body, the protective garment body is of an up-down connected structure, a plurality of miniature anti-explosion refrigerating machines and a plurality of miniature anti-explosion exhaust fans are arranged on the back face of the upper garment portion of the protective garment body, and a gear adjusting controller is arranged on the front face of the upper garment portion of the protective garment body. The gear adjusting controller is electrically connected with all the micro anti-explosion refrigerating machines and all the micro anti-explosion exhaust fans. A worker can utilize the gear adjusting controller to adjust the operation gears of the micro anti-explosion refrigerating machine and the micro anti-explosion exhaust fan according to the self-body feeling condition, so that air circulation in the protective clothing is ensured, cooling is achieved, the symptoms such as dysphoria and dizziness caused by body temperature rise of the worker are avoided, and the safety of the worker is improved. And life health of underground high-temperature operating personnel can be ensured, and safe production can be realized.

An outer layer system of the multifunctional mountaineering suit is a conjoined suit integrally formed by an upper body structure and a lower body structure, and a protective layer, a heat preservation layer and a temperature adjusting layer are sequentially distributed on the outer layer system from outside to inside; wherein the temperature adjusting layer is a bio-based phase change material lining, a phase change microcapsule group is packaged in the bio-based phase change material lining, the phase change microcapsule group is formed by mixing at least four phase change microcapsules corresponding to different phase change temperature points, and the at least four phase change microcapsules are packaged in the bio-based phase change material lining according to different proportions; the different phase change microcapsules release heat or absorb heat at the corresponding phase change temperature points so as to adjust the temperature at different temperatures, so that the human body is maintained in a relatively appropriate temperature environment; moreover, the outer layer system is provided with a gradient heat preservation structure in the corresponding activity area, and the filling amount of the heat preservation layer is gradually reduced from the low activity area to the high activity area in a gradient mode, so that the mountaineering wear is more convenient to move, and the flexibility of the mountaineering wear is improved.

The objective is to provide a vehicle underbody structure that allows for the installation of console accessories while ensuring the desired frontal impact performance. [Solution] The lower body structure of a vehicle 1 comprises a tunnel section 5 having a pair of left and right ridge sections 5a at the center in the vehicle width direction, a pair of left and right side sills 3, a first floor cross member 20 connecting the side sills 3 in the vehicle width direction, and a console bracket 10 having an open cross section shape that covers the tunnel section 5 from above the vehicle at the front of the first floor cross member 20 and is open at the bottom of the vehicle and extends in the vehicle front-rear direction. The console bracket 10 has a pair of left and right first parts 11 that protrude upward along the pair of left and right ridge sections 5a and to which console accessories are attached to the upper surface 111, and a second part 12 that is located between the first parts 11 and is located below the upper surface 111 of the first parts 11. The second part 12 is fixed to the tunnel section 5 and the first floor cross member 20.

The present invention provides a vehicle underbody structure that suppresses rear seat displacement across the entire width during a frontal collision, while also suppressing increases in cost and weight. [Solution] The lower body structure is positioned adjacent to the rear of the center of the cross member 4 in the vehicle width direction, and is provided projecting upward from the floor panel 3, and includes a bracket 5 that supports the central seating portion 25A of the rear seat 2. The height of the cross member 4 is higher than the height of the portion P below the rear end of the cushion body 23 of the floor panel 3. The cushion body 23 has a recess 23b formed in the center of the lower surface 23a of the cushion body 23 in the vehicle width direction that fits into the bracket 5, and a protrusion 23c that projects downward from the lower surface 23a of the cushion body 23 at positions on both sides in the vehicle width direction relative to the recess 23b and engages with either the cross member 4 or the raised portion 3a of the front end of the floor panel 3.