CN219428065U - High-safety light-weight automobile anti-collision beam - Google Patents

Abstract

The utility model provides a lightweight car crashproof roof beam of high security, crashproof roof beam includes crossbeam body, energy-absorbing box, mounting panel and local reinforcement, the energy-absorbing box is provided with two, fixes respectively the crossbeam body both ends, the mounting panel is fixed the bottom of energy-absorbing box, the inside die cavity that is provided with of crossbeam body, local reinforcement is fixed in the die cavity. The anti-collision beam body is divided into a plurality of sections of arc bending at a large angle, the included angle of the inner wall of the cavity of the anti-collision beam is limited, the bending resistance in collision is improved, and a local reinforcing piece is arranged in an anti-collision Liang Xingqiang, so that the rigidity of the anti-collision beam is enhanced.

Description

High-safety light-weight automobile anti-collision beam

Technical Field

The utility model relates to an automobile anti-collision beam, in particular to a lightweight automobile anti-collision beam with bending resistance and high-speed collision safety.

Background

The automobile anti-collision beam is an important safety component for collision energy absorption at the front end of the automobile, and particularly has obvious effect under the high-speed collision working condition, such as MPDB working condition, the relative collision speed of two automobiles reaches 100km/h, the collision energy is large, and the requirements on the bending resistance and the energy absorption efficiency of the automobile anti-collision beam are higher. Meanwhile, the automobile is required to be light, and particularly the development of the industrialization application of the light technology of the automobile is promoted along with the rapid development of new energy electric vehicles in recent years. The large amount of data shows that per 100 kg of automobile quality reduction, per 100km of running, the gasoline consumption of 0.7L can be saved, and the carbon dioxide emission can be reduced by about 5 g/km, which is significant for realizing the peak of carbon before 2030 and the strategic aim of carbon neutralization before 2060 in the country. Therefore, under the condition of ensuring less weight increase, the local structural optimization of the automobile anti-collision beam assembly is very urgent to cope with high-speed collision safety.

At present, the following method is adopted to improve the bending resistance of an anti-collision beam in high-speed collision: (1) The optimization means of the conventional anti-collision beam is to increase the material thickness or increase the material strength to integrally increase the rigidity of the anti-collision beam, but the method greatly increases the production cost of the anti-collision beam and simultaneously loses the competitive advantage in the aspect of automobile weight reduction. (2) The existing anti-collision beam is poor in rigidity due to unreasonable structural design and material thickness distribution or weak in local area of the beam, so that the phenomenon that the local area of the beam is collapsed or even broken and the welding seam of the mounting plate and the energy absorption box is torn in high-speed collision often occurs, the situation occurs, the anti-collision beam cannot exert the effect of actual collision energy absorption, and the effect of the anti-collision beam serving as a safety part at the front end of a vehicle is greatly reduced.

Disclosure of Invention

The utility model provides a high-safety lightweight automobile anti-collision beam, which aims to overcome the defects in the prior art, wherein an anti-collision beam body is divided into a plurality of sections of arc bending at a large angle, an included angle of the inner wall of an anti-collision beam cavity is limited, the bending resistance in collision is improved, a local reinforcing piece is arranged in the anti-collision beam cavity, and the rigidity of the anti-collision beam is enhanced.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides a lightweight car crashproof roof beam of high security, crashproof roof beam includes crossbeam body, energy-absorbing box, mounting panel and local reinforcement, the energy-absorbing box is provided with two, fixes respectively the crossbeam body both ends, the mounting panel is fixed the bottom of energy-absorbing box, the inside die cavity that is provided with of crossbeam body, local reinforcement is fixed in the die cavity.

Above-mentioned high security's lightweight car anticollision roof beam, the crossbeam body is curved for the arcuation through the cross-section stretch bending, sets up to three sections at least, and the contained angle beta of middle fixed arc top tangent line and tip straightway is less than or equal to 45.

Above-mentioned high security's lightweight car anticollision roof beam, the inside first die cavity that seals, second seal die cavity and third seal the die cavity that is provided with side by side of crossbeam body, the first lateral wall of first seal die cavity and the third lateral wall of third seal the die cavity with the inner wall contained angle alpha of crossbeam body is 82-90, two lateral walls of second seal the die cavity set up to the arc, and the radian is R80-R110, the both ends of the inner wall and the outer wall of crossbeam body all are provided with the flange limit.

Above-mentioned high security's lightweight car anticollision roof beam, local reinforcement sets up to the cavity tubulose, and it sets up along the Y direction in first closed die cavity and/or the third closed die cavity, the outer wall of local reinforcement with clearance 0mm < L between the inner wall of first closed die cavity and/or the third closed die cavity is less than or equal to 1mm, local reinforcement outer wall both ends all pass through blind rivet with the outer wall fixed connection of crossbeam body avoids the vehicle to travel and jolts the in-process and appear abnormal sound.

Above-mentioned high security's lightweight car anticollision roof beam, be provided with the bundle on the first lateral wall of first closed die cavity and/or the third lateral wall of third closed die cavity from outside to inside and rivet the sunken, it is in to prick the sunken both ends that are in local reinforcement respectively.

Above-mentioned high security's lightweight car anticollision roof beam, two crumple holes are respectively opened to energy-absorbing box inner wall side fillet department, and there is a crumple hole everywhere to outer wall side fillet, the mounting panel is in energy-absorbing box outer wall side root is equipped with the turn-ups structure, turn-ups height H is 15mm-25mm, the upper edge of turn-ups structure with the welding of energy-absorbing box lateral surface, the other lateral surface root of energy-absorbing box directly with the mounting panel welding.

The beneficial effects of the utility model are as follows: according to the utility model, the local reinforcing piece is arranged in the closed cavity of the beam body, two ends of the local reinforcing piece are limited in the Y direction of the closed cavity through the rivet penetration recess, the beam body and the local reinforcing piece are jointly bent into arc-shaped bending, and are fixedly connected through the self-plugging rivet, so that the rigidity of the beam is locally enhanced, the safety of high-speed collision of a vehicle is improved, and meanwhile, the weight is reduced. The root of the energy-absorbing box is welded with the mounting plate in a sectional mode, so that stress concentration caused by welding heat influence of the root of the energy-absorbing box and the mounting plate can be avoided, the risk of tearing a welding line caused by overlarge Y-direction force on the outer wall side of the energy-absorbing box in high-speed collision can be reduced, and the situation that the energy-absorbing box is abnormally crushed and is torn with the welding line of the mounting plate is avoided. The anti-collision beam is suitable for various modeling and installation requirements of the outer part of the front end of the automobile.

Drawings

The utility model is further described below with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of an assembly structure of the present utility model;

FIG. 2 is a schematic view of an arc-shaped structure of an anti-collision beam body;

FIG. 3 is a schematic cross-sectional view of a beam body;

FIG. 4 is a schematic view of the connection structure of the beam body and the local reinforcement;

FIG. 5 is a schematic cross-sectional view of a beam body and local stiffener connection;

FIG. 6 is a schematic view of a left side crash box assembly.

In the figure: 1. a beam body; 1-1, a first closed cavity; 1-11, a first outer side wall; 1-2, a second closed cavity; 1-3, a third closed cavity; 1-31, a third outer side wall; 1-4, inner wall; 1-5, outer wall; 1-6, flange edges; 2. an energy absorption box; 2-1, collapsing holes; 3. a mounting plate; 3-1, a flanging structure; 4. a local reinforcement; 5. a blind rivet; 6. and (5) riveting the concave.

Description of the embodiments

The utility model is further described below with reference to the accompanying drawings.

Referring to fig. 1, 2 and 4, the high-safety lightweight automobile anti-collision beam comprises a beam body 1, an energy absorption box 2, a mounting plate 3 and a local reinforcing piece 4, wherein the beam body 1 is bent into an arc shape through a uniform cross section, large-angle bending is realized, the beam body is at least three sections, an included angle beta between a tangent line at the top end of a middle fixed arc and a straight line section at the end is less than or equal to 45 degrees, so as to better adapt to the modeling change of the front part of a vehicle, the energy absorption box 2 is provided with two energy absorption boxes which are respectively welded and fixed below two ends of the beam body 1, the mounting plate 3 is fixed at the bottom of the energy absorption box 2, a cavity is formed in the beam body 1, and the local reinforcing piece 4 is fixed in the cavity.

Referring to fig. 3, a first closed cavity 1-1, a second closed cavity 1-2 and a third closed cavity 1-3 are arranged in the beam body 1 side by side, included angles alpha between a first outer side wall 1-11 of the first closed cavity 1-1 and a third outer side wall 1-31 of the third closed cavity and an inner wall 1-4 of the beam body 1 are 82-90 degrees, two side walls of the second closed cavity 1-2 are arc-shaped, the radian is R80-R110, and flange edges 1-6 are arranged at two ends of the inner wall 1-4 and the outer wall 1-5 of the beam body 1. The cross section structure of the cross beam body has good bending resistance in vehicle collision, and meanwhile, the middle fracture risk of the cross beam is reduced.

Referring to fig. 1, 4 and 5, the local reinforcement 4 is provided with a hollow tube shape, and is arranged in the first closed cavity 1-1 and/or the third closed cavity 1-3 along the Y direction, the number, the length and the Y direction positions of the local reinforcement are set according to actual needs, the transition areas of the straight line sections and the radian sections at two ends of the beam body are avoided, the rigidity of the beam body is enhanced locally, the gap between the outer wall of the local reinforcement 4 and the inner wall of the first closed cavity 1-1 and/or the inner wall of the third closed cavity 1-3 is smaller than L and smaller than or equal to 1mm, and two ends of the outer wall of the local reinforcement 4 are fixedly connected with the outer wall 1-5 of the beam body 1 through blind rivets 5, so that abnormal sound in the vehicle running and bumping process is avoided. The first outer side wall 1-11 of the first closed cavity 1-1 and/or the third outer side wall 1-31 of the third closed cavity 1-3 are provided with rivet penetrating depressions 6 from outside to inside, the rivet penetrating depressions 6 are respectively positioned at two ends of the local reinforcing piece 4, and inward protrusions of the rivet penetrating depressions are used for limiting the Y direction of the local reinforcing piece.

Referring to fig. 6, two crumple holes 2-1 are respectively formed at two side fillets of the inner wall of the energy-absorbing box 2, one crumple hole is respectively formed at two side fillets of the outer wall, the energy-absorbing box is guaranteed to be evenly crumpled from front to back in sequence in the collision process, a flanging structure 3-1 is arranged at the root of the side of the outer wall of the energy-absorbing box 2, the flanging height H is 15mm-25mm, the upper edge of the flanging structure 3-1 is welded with the outer side face of the energy-absorbing box, and the root of the other side faces of the energy-absorbing box is directly welded with the mounting plate. The structure breaks through the full welding mode of the root part of the traditional energy-absorbing box and the mounting plate, and is changed into sectional welding, so that stress concentration caused by welding heat influence of the root part of the energy-absorbing box and the mounting plate can be avoided, the risk of tearing a welding line due to overlarge Y-direction force on the outer wall side of the energy-absorbing box in high-speed collision can be reduced, and the situation that the energy-absorbing box is abnormally crushed and is torn with the welding line of the mounting plate is avoided.

The anti-collision beam is always made of aluminum.

Claims (6)

1. A high security's lightweight car anticollision roof beam, its characterized in that: the anti-collision beam comprises a beam body (1), an energy absorption box (2), a mounting plate (3) and local reinforcing pieces (4), wherein the two energy absorption boxes (2) are arranged and fixed at two ends of the beam body (1) respectively, the mounting plate (3) is fixed at the bottom of the energy absorption box (2), a cavity is formed in the beam body (1), and the local reinforcing pieces (4) are fixed in the cavity.

2. The high security lightweight automotive impact beam of claim 1, wherein: the beam body (1) is bent into an arc shape through uniform cross section stretch bending, at least three sections are arranged, and an included angle beta between the vertex tangent line of the middle fixed arc and the end straight line section is less than or equal to 45 degrees.

3. The high security lightweight automotive impact beam of claim 2, wherein: the novel cross beam comprises a cross beam body (1), wherein a first closed cavity (1-1), a second closed cavity (1-2) and a third closed cavity (1-3) are arranged in the cross beam body (1) side by side, an included angle alpha between a first outer side wall (1-11) of the first closed cavity (1-1) and a third outer side wall (1-31) of the third closed cavity and an inner wall (1-4) of the cross beam body (1) is 82-90 degrees, two side walls of the second closed cavity (1-2) are arc-shaped, the radian is R80-R110, and flange edges (1-6) are arranged at two ends of the inner wall (1-4) and the outer wall (1-5) of the cross beam body (1).

4. A high security lightweight automotive impact beam as claimed in claim 3, wherein: the local reinforcement (4) is arranged in a hollow tube shape, the hollow tube shape is arranged in the first closed cavity (1-1) and/or the third closed cavity (1-3) along the Y direction, a gap between the outer wall of the local reinforcement (4) and the inner wall of the first closed cavity (1-1) and/or the inner wall of the third closed cavity (1-3) is more than 0mm and less than or equal to 1mm, and two ends of the outer wall of the local reinforcement (4) are fixedly connected with the outer wall (1-5) of the beam body (1) through blind rivets (5).

5. The high security lightweight automotive impact beam of claim 4, wherein: and a binding riveting concave (6) is arranged on the first outer side wall (1-11) of the first closed cavity (1-1) and/or the third outer side wall (1-31) of the third closed cavity (1-3) from outside to inside, and the binding riveting concave (6) is respectively positioned at two ends of the local reinforcing piece (4).

6. The high security lightweight automotive impact beam of claim 5, wherein: two crumple holes (2-1) are respectively formed in the round corner of the inner wall side of the energy-absorbing box (2), one crumple hole is respectively formed in the round corner of the outer wall side of the energy-absorbing box, a flanging structure (3-1) is arranged on the root of the outer wall side of the energy-absorbing box (2), the flanging height H is 15mm-25mm, the upper edge of the flanging structure (3-1) is welded with the outer side face of the energy-absorbing box, and the root of the other side faces of the energy-absorbing box is directly welded with the mounting plate.