CN216269143U - Automobile front bumper lower supporting beam structure beneficial to pedestrian protection - Google Patents

Abstract

The utility model discloses an automobile front bumper lower supporting beam structure beneficial to pedestrian protection, which comprises a front protection supporting structure, wherein the front protection supporting structure comprises a front protection supporting frame, the front protection supporting frame comprises an energy absorption part and supporting parts, the supporting parts are arranged on two sides of the rear end of the energy absorption part, and the energy absorption part is composed of a plurality of longitudinal ribs. The utility model provides a lower supporting beam structure of a front bumper of an automobile, which is beneficial to protecting pedestrians and has the advantage of reducing the injury of legs of the pedestrians during collision.

Description

Automobile front bumper lower supporting beam structure beneficial to pedestrian protection

Technical Field

The utility model relates to the technical field of automobile pedestrian protection, in particular to an automobile front bumper lower supporting beam structure beneficial to pedestrian protection.

Background

As a large number of automobile reserves and large population countries in China, the conditions of mixed roads of people and vehicles are common, and the collision accidents of automobiles and pedestrians are greatly increased along with the rapid increase of the automobile reserves. Automobile pedestrian protection performance gradually gets more attention, a GB/T2450recommendation standard of automobile-pedestrian collision protection is issued in 2009 in China, and pedestrian protection performance evaluation items are introduced into C-NCAP evaluation rules in 2018. In pedestrian collision accident, the shank fracture, the pedestrian's injured condition of knee ligament fracture for very easily appearing, for better protecting pedestrian's shank, need reserve sufficient energy-absorbing space between car front end anticollision roof beam and the front bumper, rationally match vehicle upper portion (aircraft bonnet region) simultaneously, middle part (anticollision roof beam region), lower part (preceding under-support structure) support rigidity, form effective support to pedestrian's shank, pedestrian's shank is crooked too big in avoiding the collision accident, cause great injury to the pedestrian.

Chinese patent application publication No. CN111516634A, entitled "integrated structure for protecting leg of pedestrian" with publication date of 2020, 08, month 11, discloses an integrated structure for protecting leg of pedestrian. This protection integrated configuration, including lower protective plate, energy-absorbing piece and crashproof roof beam, the lower protective plate is installed between front end frame and front bumper covering, and the lower protective plate both ends are passed through the collateral branch brace and are connected with crashproof roof beam, and crashproof roof beam is connected with the longeron, and the energy-absorbing piece is fixed on crashproof roof beam. The lower guard plate is integrated with a shank supporting beam, and part of the collision energy at the lower part of the shank is transmitted to the side supporting bracket through the shank supporting beam and then transmitted to the vehicle body through the front anti-collision beam; a part of the collision energy is transmitted to the front end frame through the lower guard plate and then transmitted to the longitudinal beam. The lower guard plate is connected with the lower cross beam of the front end frame, and a gap between the front bumper and the bottom of the front end frame is closed. The utility model not only realizes light weight, but also can effectively absorb the impact energy at the lower part of the leg of the pedestrian, reduces the number of parts and the cost, improves the mode of the whole front end, and is beneficial to the improvement of NVH. But the hardness of the lower guard plate and the anti-collision beam is still higher, so that the injury to the legs of the pedestrian cannot be avoided, and the pedestrian cannot be prevented from being involved into the vehicle bottom.

Disclosure of Invention

The utility model provides a lower support beam structure of a front bumper of an automobile, which is beneficial to pedestrian protection and has the advantage of reducing the injury of legs of pedestrians during collision, in order to overcome the defects that the lower guard plate and an anti-collision beam of a pedestrian leg protection integrated structure in the prior art are still higher in hardness and cannot avoid the injury to the legs of the pedestrians and the condition that the pedestrians are involved in the bottom of the automobile.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a be favorable to pedestrian's protection's car front bumper under bracing crossbeam structure, protects bearing structure including preceding, and preceding support structure of protecting includes preceding support frame of protecting, and preceding support frame of protecting includes energy-absorbing portion and supporting part, energy-absorbing portion rear end both sides are located to the supporting part, energy-absorbing portion comprises the vertical muscle of a plurality of.

Above-mentioned technical scheme's structure can reduce pedestrian's shank injury. The energy absorption part is composed of a plurality of longitudinal ribs, has a softer structure, can deform when a pedestrian collision accident occurs, and can fully absorb collision energy; the structure and the front anti-collision beam or the front protective foam energy absorption block of the automobile jointly form effective support for the legs of pedestrians, and serious injuries such as fracture, ligament breakage and the like caused by excessive bending of the legs of the pedestrians are avoided.

Preferably, the support portion is provided with reinforcing ribs, and the number of the reinforcing ribs is larger than that of the energy absorbing portion. The structural rigidity is stronger, also can form the supporting role to pedestrian's shank on the basis of guaranteeing structural installation stability, avoids taking place the accident that the pedestrian was drawn into the vehicle bottom.

Preferably, the front protection supporting structure further comprises an airflow guide structure, and the airflow guide structure is fixed in front of the energy absorption part and is composed of a plurality of longitudinal ribs. The structure comprises a small amount of longitudinal ribs, is weaker in structure, is easy to bend and deform when a collision accident occurs between a vehicle and a pedestrian, absorbs collision energy, avoids causing excessive damage to legs of the pedestrian, and can play a certain guiding role in air flow entering the cooling module through the lower grille of the front bumper.

Preferably, the front protection support structure further comprises a buffer structure, wherein the buffer structure is made of foam and fixed below the airflow guide structure. The foam structure is mainly used for supporting the front bumper and avoiding abnormal sound caused by vibration of the front bumper in the driving process.

Preferably, the front bumper supporting structure further comprises a front bumper mounting point fixed behind the supporting portion. The structure is connected with the outer skin of the front bumper, and the periphery of the structure is provided with a reinforcing structure, so that the strength of a mounting point is increased, the stability of the front bumper is ensured, and the front bumper is prevented from accidentally falling.

Preferably, the front protection support structure further comprises a lower support structure mounting point fixed behind the support portion. The structure is connected with the auxiliary anti-collision beam energy absorption box baffle, so that the installation stability is ensured.

Preferably, the front protection support structure is a one-time injection molding structure. The structure quality is lighter, is favorable to alleviateing whole car weight, realizes the lightweight.

The utility model has the beneficial effects that: (1) the structure can avoid serious injuries such as fracture, ligament breakage and the like caused by excessive bending of the leg of the pedestrian; (2) the structure can avoid the accident that the pedestrian is involved in the vehicle bottom; (3) the structure can prevent abnormal sound; (4) the structure can play a certain role in guiding airflow; (5) the structure is stable in installation and light in weight.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic illustration of the position of the present invention in a vehicle;

FIG. 3 is a schematic top view of the present invention;

fig. 4 is a schematic view of the utility model with longitudinal ribs arranged in a bottom view.

In the figure: the energy-absorbing structure comprises a front bumper lower grid 1, a front bumper supporting structure 2, a front bumper supporting frame 2.1, an energy-absorbing part 2.1.1, a supporting part 2.1.2, a lower supporting structure mounting point 2.2, a buffering structure 2.3, a front bumper mounting point 2.4, an airflow guide structure 2.5 and an auxiliary anti-collision beam energy-absorbing box 3.

Detailed Description

The utility model is further described with reference to the following figures and specific embodiments.

As shown in fig. 1 and 2, the lower supporting beam structure of the front bumper of the automobile, which is beneficial to protecting pedestrians, comprises a lower front bumper grid 1, a front protection supporting structure 2 and an auxiliary anti-collision beam energy absorption box 3. The front bumper supporting structure 2 is arranged between the front bumper lower grid 1 and the auxiliary anti-collision beam energy absorption box 3. The front protection support structure 2 comprises a front protection support frame 2.1, a lower support structure mounting point 2.2, a buffer structure 2.3, a front bumper mounting point 2.4 and an airflow guide structure 2.5. The front protective support frame 2.1 comprises an energy absorption part 2.1.1 and a support part 2.1.2. The supporting parts 2.1.2 are arranged on two sides of the rear end of the energy absorbing part 2.1.1.

As shown in fig. 1 and 2, the front protection support structure 2 is a one-time injection molding structure and is made of a plastic structure. The airflow guiding structure 2.5 is arranged in front of the energy absorbing part 2.1.1 and is composed of a plurality of longitudinal ribs. The buffer structure 2.3 is arranged below the airflow guide structure 2.5, and is made of foam cotton and is in interference fit with a front bumper skin between the front bumper lower grid 1 and the front bumper support frame 2.1. Front bumper mounting point 2.4 sets up in the supporting part rear side, and every mounting point is equipped with 1 bolted connection hole, and bolted connection hole periphery is equipped with the strengthening rib, is connected through bolt and front bumper outer skin. The lower supporting structure mounting point 2.2 is arranged on the rear side of the supporting part, each mounting point is provided with two bolt connecting holes, reinforcing ribs are arranged on the peripheries of the bolt connecting holes, the bolt connecting holes are connected with the auxiliary anti-collision beam energy absorption box 3 through bolts, and the mounting structure is of an L-shaped structure.

As shown in fig. 1, 3 and 4, the energy absorbing part 2.1.1 is composed of a small number of longitudinal ribs, has a soft structure, can deform when a pedestrian collision accident happens, and fully absorbs collision energy. Supporting part 2.1.2 structural rigidity is stronger, also can form the supporting role to pedestrian's shank on the basis of guaranteeing structural installation stability, avoids taking place the accident that the pedestrian was drawn into the vehicle bottom. The airflow guide structure 2.5 can absorb part of collision energy through deformation, and can play a certain guiding role in airflow entering the cooling module through the lower grille of the front bumper. The 2.3 material of buffer structure is the bubble cotton, with front bumper covering interference fit, and the primary function is for supporting preceding guarantor, avoids the in-process preceding guarantor shake to take place the abnormal sound of going. Every front bumper mounting point 2.4 is provided with 1 bolted connection hole, and the peripheral design has the strengthening rib for mounting point intensity increases, guarantees the stability of front bumper, prevents that the front bumper is unexpected to drop. Every lower supporting structure mounting point 2.2 has two bolted connection holes, can guarantee installation stability, and the L type structure can improve bolt assembly convenience. The front protection supporting structure 2 is of an injection molding structure, is made of a plastic structure, is light in weight, and is beneficial to reducing the weight of the whole vehicle and realizing light weight.

Above-mentioned technical scheme's structure can reduce pedestrian's shank injury when the collision. The principle is illustrated as follows: when a pedestrian collides with the front end of the vehicle, the upper part of the shank of the pedestrian is contacted with the upper part or the middle part of the front bumper skin, at the moment, collision energy is transmitted to the whole supporting beam structure, and the buffer structure 2.3, the airflow guide structure 2.5 and the energy absorption part 2.1.1 deform to absorb most of the collision energy, so that the injury to the leg of the pedestrian is reduced. When the contact of pedestrian's shank lower part and front bumper covering lower part, the front bumper covering receives impact deformation back and buffer structure 2.3 contact, buffer structure 2.3, airflow guide structure 2.5, most collision energy is absorbed in energy-absorbing portion 2.1.1 deformation, then transmit supporting part 2.1.2 through preceding guarantor support frame 2, supporting part 2.1.2 is strong, backward transmission impact force, and support whole front bumper, prevent that the pedestrian from being rolled into the vehicle below, cause secondary damage.

The utility model has the beneficial effects that: (1) the structure can avoid serious injuries such as fracture, ligament breakage and the like caused by excessive bending of the leg of the pedestrian; (2) this structure can avoid taking place the pedestrian and be drawn into the vehicle bottom accident: (3) the structure can play a certain role in guiding airflow; (4) the structure can prevent abnormal sound; (5) the structure is stable in installation and light in weight.

In the description of the present invention, it should be noted that the terms "front", "rear", and the like are used for indicating the orientation relation based on the orientation relation shown when the vehicle moves, or the orientation or position relation which the utility model is used to put, and are only for facilitating the description of the present invention and simplifying the description, but not for indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

The foregoing shows and describes the general principles and principal structural features of the present invention. The present invention is not limited to the above examples, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which fall within the scope of the claimed invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides a be favorable to pedestrian's protection under bumper supporting beam structure before car, characterized by, including preceding supporting structure (2) of protecting, preceding supporting structure of protecting is including preceding support frame (2.1) of protecting, and preceding support frame (2.1) of protecting is including energy-absorbing portion (2.1.1) and supporting part (2.1.2), energy-absorbing portion (2.1.1) rear end both sides are located in supporting part (2.1.2), energy-absorbing portion (2.1.1) comprises the vertical muscle of a plurality of.

2. A lower supporting beam structure for a front bumper of an automobile beneficial to pedestrian protection according to claim 1, wherein the supporting portion (2.1.2) is provided with a larger number of reinforcing ribs than the energy absorbing portion (2.1.1).

3. A lower supporting beam structure for a front bumper of an automobile beneficial to pedestrian protection according to claim 2, characterized in that the front bumper supporting structure (2) further comprises an air flow guiding structure (2.5), and the air flow guiding structure (2.5) is fixed in front of the energy absorbing part (2.1.1) and is composed of a plurality of longitudinal ribs.

4. A vehicle front bumper lower supporting beam structure beneficial to pedestrian protection according to claim 3, characterized in that the front bumper supporting structure (2) further comprises a buffer structure (2.3), the buffer structure (2.3) is made of foam, and is fixed below the air flow guide structure (2.5).

5. A vehicle front-bumper lower supporting beam structure for pedestrian protection according to claim 1, 2, 3 or 4, characterized in that the front bumper supporting structure (2) further comprises a front bumper mounting point (2.4) fixed behind the supporting portion (2.1.2).

6. A lower support beam structure for front bumpers of cars beneficial for pedestrian protection according to claim 1 or 2 or 3 or 4, characterized in that said front protection support structure (2) further comprises a lower support structure mounting point (2.2) fixed behind the support portion (2.1.2).

7. A vehicle front bumper lower supporting beam structure for pedestrian protection according to claim 1, 2, 3 or 4, characterized in that the front protection supporting structure (2) is a one-shot injection molding structure.

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