CN218112561U - Anti-collision beam for improving vehicle offset collision safety and maintainability - Google Patents

Abstract

The anti-collision beam comprises a cross beam and an energy absorption box, wherein two middle arc forming areas and two side arc forming areas are symmetrically arranged on the cross beam in the length direction, the outer convex parts of the two middle arc forming areas are soft areas, the side arc forming areas and the end parts of the cross beam on the same side are small offset collision corresponding areas, the strength of the soft areas is 30% -40% of that of other parts of the cross beam, the length of the soft areas is L2, and L2 is not less than 30mm and not more than 100mm. The cross beam of the utility model is provided with the four arc forming areas on the appearance structure, thereby ensuring that the contact area between the cross beam and the barrier is increased on the premise that the cross beam meets the formability requirement and the shape requirement; the beam is provided with the soft area, so that the requirements of the overall strength of the beam are met, and the requirements of weakening the local strength and generating a linear deformation mode under a specific working condition are met; the energy-absorbing box structure can guarantee that the root of the energy-absorbing box provides enough supporting force in the small offset collision process, and the energy-absorbing box contracts along the direction of the vehicle body, so that the forward transmission of force values is guaranteed.

Description

Anti-collision beam for improving vehicle offset collision safety and maintainability

Technical Field

The utility model relates to an automobile safety part, especially an improve the crashproof roof beam of vehicle biasing collision security, maintainability.

Background

The safety performance of automobiles is an increasing concern for consumers. The middle insurance research formally releases a small offset collision test and evaluation rule in 2017, the contact area of the small offset collision and a barrier is only 25% of the width of a vehicle, the small offset collision basically avoids a longitudinal beam, the energy in collision is also directly transmitted to a passenger compartment without being blocked, a front suspension, wheels and a steering mechanism of the vehicle can also displace backwards, and the vehicle can also invade the passenger compartment to hurt passengers in serious cases. Under such circumstances, it is required that the impact beam cross member has sufficient strength and the impact beam is extended as far as possible with respect to the side member structure, so that the impact force can be effectively transmitted to the side member, and the intrusion amount of the passenger compartment can be reduced. In the prior art, the width direction of the cross beam is expanded by adding the reinforcing piece to increase the contact with the barrier in the small offset collision process, so that the safety of members in the vehicle is ensured. However, the structure needs to be added with more reinforcing parts, the tool input cost is high, the process is complex, and the risk of cracking of the welding part in the collision process exists, so that the collision safety is influenced.

The automobile crashworthiness and the maintenance economy are used for carrying out subdivision evaluation tests on the dimensions of the structural crashworthiness, the maintainability, the maintenance economy and the vehicle compatibility of the anti-collision beam. In the repairability operating mode test of car, it is just better not to require the intensity uniformity of crashproof roof beam crossbeam, and the intensity of crossbeam is identical can produce "V style of calligraphy" deformation mode completely, relatively with crashproof roof beam rear portion structure, the great structure that can destroy the rear portion of crossbeam invasion volume, and maintenance economy type is relatively poor. If the local strength of the cross beam is weakened, the intrusion amount of the anti-collision beam is smaller in the generated linear deformation mode relative to the rear structure of the anti-collision beam, the vehicle body structure at the rear part of the anti-collision beam cannot be damaged, and the economic maintainability is better.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's problem, provide an improve vehicle biasing collision security, the anticollision roof beam of maintainability that compromise security, economic nature and technology are simple relatively.

The problem of the utility model is realized with following technical scheme:

the utility model provides an improve crashproof roof beam of vehicle biasing collision security, maintainability, includes the crossbeam and is located the energy-absorbing box of crossbeam both sides, the crossbeam sets up two middle parts and becomes the arc district and two limit portion become the arc district in its long-side symmetry, and two middle parts become the arc district evagination position and be soft district, and limit portion becomes the arc district and bumps corresponding district to crossbeam homonymy tip for little biasing, and soft district intensity is 30% -40% of other position intensity of crossbeam, and soft district length is L2, and L2 is not less than 30mm is not more than 100mm.

According to the anti-collision beam for improving the offset collision safety and maintainability of the vehicle, the distance between the centers of the two soft areas is L3, the total length of the cross beam is L, the L3 is equal to 0.30L-0.40L, the length of the corresponding small offset collision area is L1, and the L1 is equal to 0.18L-0.22L.

The anti-collision beam for improving the offset collision safety and the maintainability of the vehicle has the side arc forming area angle theta 1, the angle theta 1 is more than 90 degrees and less than 180 degrees, the middle arc forming area angle theta 2 is more than 90 degrees and less than theta 2 and less than 180 degrees.

Above-mentioned improve crashproof roof beam of vehicle offset collision security, maintainability, the energy-absorbing box includes energy-absorbing box main part and bottom plate, and it bumps the enhancement turn-ups to correspond energy-absorbing box main part medial surface and lateral surface department on the bottom plate to be equipped with the little off-set of bottom plate, and the medial surface and the lateral surface of energy-absorbing box main part set up respectively to be equipped with the little off-set of energy-absorbing box and bump the enhancement turn-ups, and the little off-set of energy-absorbing box bumps enhancement turn-ups upper portion and is equipped with the plug welding hole, and energy-absorbing box main part and bottom plate welding are as an organic whole.

Above-mentioned improve crashproof roof beam of vehicle biasing collision security, maintainability, the outside and the front and back side of bottom plate set up unhook operating mode respectively and strengthen the turn-ups.

The utility model has the main advantages as follows: the anti-collision beam comprises a cross beam and an energy absorption box, the cross beam passes through four arc forming areas on the appearance structure, and the contact area between the cross beam and a barrier is improved on the premise that the cross beam meets the formability requirement and the shape requirement; the soft area is arranged according to the structure performance of the cross beam, so that the requirements of the overall strength of the cross beam are met, and the requirements of weakening the local strength and generating a linear deformation mode under a specific working condition are met, so that the anti-collision beam has good economic maintainability and is compatible with the requirements of small offset collision and maintenance economy; the energy-absorbing box structure can guarantee that the root of the energy-absorbing box provides enough supporting force in the small offset collision process, and the energy-absorbing box contracts along the direction of the vehicle body, so that the forward transmission of force values is guaranteed.

Drawings

The present invention will be further explained with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of a cross beam;

FIG. 3 is a schematic view of a construction of the crash box;

FIG. 4 is a schematic structural view of the inner portion of the energy absorber box;

FIG. 5 is a schematic structural view of an outboard portion of the energy absorption box;

FIG. 6 is a cross-sectional view of the crash box;

fig. 7 is a schematic view of the structure of the base plate.

The list of labels in the figure is: 1. the energy absorption box comprises a beam, 1-1 parts of small offset collision corresponding areas, 1-2 parts of soft areas, 2 parts of energy absorption boxes, 2-1 parts of energy absorption box main bodies, 2-1-1 parts of energy absorption box small offset collision reinforcing flanges, 2-1-2 parts of plug welding holes, 2-2 parts of bottom plates, 2-2-1 parts of bottom plate small offset collision reinforcing flanges and 2-2 parts of unhooking working condition reinforcing flanges.

Detailed Description

Referring to fig. 1 and 2, the utility model discloses a crossbeam 1 and be located the energy-absorbing box 2 that crossbeam both sides symmetry set up. The beam is symmetrically provided with two middle arc forming areas and two edge arc forming areas in the length direction, the angle of the edge arc forming areas is theta 1, and theta 1 is more than 90 and less than 180; the angle of the middle arc forming area is theta 2, and theta 2 is more than 90 degrees and less than 180 degrees. The small offset collision corresponding area 1-1 is arranged from the center of the side arc forming area to the end part on the same side of the cross beam, the total length of the cross beam is L, the length of the small offset collision corresponding area is L1, and L1 is equal to 0.18L-0.22L. The crossbeam makes the crossbeam both can satisfy the anterior molding needs of car through the setting of forming the arc district everywhere, again can multiplicable little offset when colliding contact area between crossbeam and the barrier, promotes the security performance of the little offset collision of vehicle. An important improvement of the beam is that soft areas 1-2 are arranged at the convex parts of the middle arc forming areas of the two parts, the strength of the soft areas is 30% -40% of that of other parts of the beam, the length of the soft areas is L2, and L2 is more than or equal to 30mm and less than or equal to 100mm. The distance between the centers of the two soft areas is L3, the total length of the cross beam is L, and then L3 is equal to 0.30L-0.40L. This structure is when crossbeam main part guarantees intensity, and the part of crossbeam sets up the soft district that intensity is lower, has guaranteed the requirement that local intensity needs the weakening under specific operating mode condition, is favorable to the crossbeam to produce "style of calligraphy" deformation mode under the specific operating mode condition, makes anticollision roof beam economic maintainability better. The low strength properties of the soft zones can be obtained by means of a heat treatment.

Referring to fig. 3-7, the energy absorption box comprises an energy absorption box main body 2-1 and a bottom plate 2-2, wherein the energy absorption box main body is formed by welding an outer side part of the energy absorption box and an inner side part of the energy absorption box. The lower part of the energy absorption box main body is provided with an energy absorption box small offset collision strengthening flanging 2-1-1 and a plug welding hole 2-1-2. The bottom plate is correspondingly provided with a bottom plate small offset collision strengthening flanging 2-2-1. The small offset of the energy-absorbing box bumps the reinforcing flange and the small offset of the bottom plate bumps the reinforcing flange and is overlapped together, the small offset of the energy-absorbing box is connected together in a welding mode, enough supporting force can be guaranteed to be arranged on the inner side and the outer side of the energy-absorbing box in the collision process, the energy-absorbing box is guaranteed not to topple inwards due to the fact that the cross beam and the energy-absorbing box which is small in obstacle avoidance overlapping amount and uneven in stress, normal crumpling and shrinking of the energy-absorbing box are influenced, and the crumpling and shrinking rib on the energy-absorbing box is arranged according to the requirement of energy absorption. The outer side and the front side and the rear side of the bottom plate are respectively provided with unhooking working condition reinforcing flanges 2-2-2, the unhooking working condition reinforcing flanges meet the requirements of trailer performance under the condition of a compound angle, and the bottom plate cannot deform greatly to generate functional damage in the trailer process due to insufficient rigidity of the energy absorption box assembly.

To sum up, the cross beam provided by the utility model can be well compatible with the requirements of small offset collision and maintenance economy, thereby not only ensuring the requirement of the overall strength of the cross beam, but also ensuring the requirement of the local strength to be weakened under the specific working condition; the energy-absorbing box structure can guarantee that the root of the energy-absorbing box provides sufficient supporting force in the collision process with the small overlapping amount barrier, and the energy-absorbing box collapses along the direction of the vehicle body, so that the forward transmission of force values is guaranteed.

Claims (5)

1. The utility model provides an improve crashproof roof beam of vehicle biasing collision security, maintainability, includes the crossbeam and is located the energy-absorbing box of crossbeam both sides, its characterized in that: the beam is symmetrically provided with two middle arc forming areas and two edge arc forming areas in the length direction, the convex parts of the two middle arc forming areas are soft areas, the small offset collision corresponding areas are arranged from the edge arc forming areas to the end parts on the same side of the beam, the strength of the soft areas is 30% -40% of that of other parts of the beam, the length of the soft areas is L2, and L2 is larger than or equal to 30mm and smaller than or equal to 100mm.

2. The impact beam for enhancing vehicle offset crash safety and serviceability of claim 1, wherein: the distance between the centers of the two soft areas is L3, the total length of the cross beam is L, the L3 is equal to 0.30L-0.40L, the length of the small offset collision corresponding area is L1, and the L1 is equal to 0.18L-0.22L.

3. The impact beam for improving vehicle offset crash safety and serviceability of claim 2, wherein: the angle of the arc forming area of the side part is theta 1, the angle of the theta 1 is more than 90 degrees and less than 180 degrees, the angle of the arc forming area of the middle part is theta 2, and the angle of the theta 2 is more than 90 degrees and less than 180 degrees.

4. The impact beam for improving vehicle offset crash safety and serviceability of claim 3, wherein: the energy absorption box comprises an energy absorption box main body and a bottom plate, a bottom plate small bias collision strengthening flanging is arranged on the bottom plate corresponding to the inner side face and the outer side face of the energy absorption box main body, the inner side face and the outer side face of the energy absorption box main body are respectively provided with the energy absorption box small bias collision strengthening flanging, a plug welding hole is formed in the upper portion of the energy absorption box small bias collision strengthening flanging, and the energy absorption box main body and the bottom plate are welded into a whole.

5. The impact beam for improving vehicle offset crash safety and serviceability of claim 4, wherein: the outside and the front and back sides of the bottom plate are respectively provided with unhooking working condition reinforcing flanges.

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