Front bumper assembly mounting structure with protection function

Abstract

The utility model discloses a front bumper assembly mounting structure with a protection function. The front bumper assembly mounting structure with the protection function comprises an energy absorption box, a cover plate is mounted on the energy absorption box, an air bag is mounted in the energy absorption box, the front side of the air bag is fixed to the tail of a front bumper mounting support, and a retaining frame is fixedly mounted in the energy absorption box. According to the front bumper assembly installation structure with the protection function, the energy absorption box, the cover plate, the front bumper installation support, the air bag and the retaining frame are arranged, the front bumper installation support is fixed in the energy absorption box to be used through the air bag with the adjustable pressure, the effect of supporting a front bumper assembly can be achieved, and the front bumper assembly is prevented from being damaged. Compared with the prior art, the front bumper assembly has the advantages that the front bumper assembly can absorb energy in a multi-progressive mode, damage of a rigid energy absorption structure to pedestrians is avoided, protection to the pedestrians is improved, structural damage cannot be caused when the structure is impacted by small and medium force, and the maintenance cost can be reduced easily.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to a front bumper assembly mounting structure with a protective function. Background Art

[0002] In recent years, the automobile industry has developed rapidly, the number of cars has increased rapidly, and the data on automobile traffic accidents has also increased year by year. Pedestrians, as vulnerable users in road traffic, are very likely to be seriously injured in traffic accidents. my country's C-NCAP and CIASI versions of the regulations have incorporated pedestrian protection into the evaluation system, providing industry standard requirements for the development of pedestrian protection in my country. In the C-NCAP2021 version and CIASI2020 version of the regulations, new assessment requirements for pedestrians' thighs have been added to promote automobile manufacturers to design structures that are more conducive to reducing injuries to pedestrians' thighs in automobile research and development.

[0003] The existing announcement number discloses a front bumper assembly mounting structure for protecting pedestrian thighs. The structure comprises a front frame, a front bumper mounting bracket, and a front bumper assembly, arranged sequentially along the vehicle's forward direction. The front bumper mounting bracket comprises a fixedly connected bracket body and a mounting plate. The bracket body is wedge-shaped, narrower at the front and wider at the rear. The mounting plate is fixedly mounted at the rear end of the bracket body, and a weakened groove is provided at the connection between the mounting plate and the bracket body. The front frame is provided with a wedge-shaped buffer hole that matches the bracket body. The bracket body and the wedge-shaped buffer hole are loosely fitted, and the mounting plate is fixedly connected to the front frame. The front bumper assembly is fixedly connected to the front end of the bracket body. This mounting structure not only solves the problem of buffering the front bumper assembly during collisions, protecting pedestrians from collisions, but also provides gravity support for the front bumper assembly.

[0004] However, when the mounting structure is hit with a certain force, the weakened groove position of the front bumper mounting bracket will break, which will make the wallet mounting bracket unable to be reused, thereby increasing the maintenance cost.

[0005] Therefore, it is necessary to provide a front bumper assembly mounting structure with a protective function to solve the above technical problems. Utility Model Content

[0006] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a front bumper assembly mounting structure with a protective function, which can help reduce maintenance costs.

[0007] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0008] A front bumper assembly mounting structure with a protective function includes: an energy absorption box, a cover plate installed on the energy absorption box, the cover plate is fixedly connected to the front end frame of the car, a front bumper mounting bracket is installed in the energy absorption box, the front bumper mounting bracket is fixedly connected to the front bumper assembly of the car, an airbag is installed in the energy absorption box, the front side of the airbag is fixed to the rear end of the front bumper mounting bracket, the airbag maintains a certain pressure, so that the front bumper mounting bracket is fixed in the energy absorption box, thereby fixing the front bumper support, and a rubber stop frame is fixedly installed in the energy absorption box, so that there is a gap between the airbag and the inner wall of the rear end of the energy absorption box, and when the airbag contacts the stop frame and slides relative to it, a damping effect is generated.

[0009] Preferably, crushing nails are installed on the inner wall of the rear end of the energy absorption box.

[0010] Preferably, a spring is installed between the energy absorption box and the front bumper mounting bracket.

[0011] Preferably, an integrally formed guide plate is provided in the energy absorption box.

[0012] Preferably, guide grooves are provided on the energy absorption box and the cover plate, and guide bars are installed on the top and bottom of the front guard mounting bracket.

[0013] Preferably, a front guard positioning groove and a front guard mounting hole are provided on the front guard mounting bracket, and a frame connecting hole is provided on the cover plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) The utility model provides an energy absorption box, a cover plate, a front bumper mounting bracket, an airbag and a stop frame, and uses an airbag with adjustable pressure to fix the front bumper mounting bracket in the energy absorption box. This not only supports the front bumper assembly, but also absorbs the energy of the front bumper assembly in multiple progressive ways when it is hit, thus avoiding the damage to pedestrians caused by the rigid energy absorption structure and improving the protection for pedestrians. Moreover, the structure will not cause structural damage under small and medium impacts, which can help reduce maintenance costs.

[0016] (2) The utility model is equipped with a crushing nail at the rear of the energy absorption box, which can easily puncture the airbag, release the pressure of the airbag, reduce the reaction force on the pedestrian, and improve the protection of the pedestrian;

[0017] (3) The utility model can improve the stability of the front bumper and play an energy-absorbing role by installing a spring between the energy absorption box and the front bumper mounting bracket;

[0018] (4) The utility model provides an integrally formed guide plate in the energy absorption box, which can facilitate the movement of the front bumper mounting bracket;

[0019] (5) The present invention can conveniently guide the movement of the front guard mounting bracket by providing guide grooves and guide strips;

[0020] (6) The present invention facilitates the connection between the structure and automobile parts by providing a front guard mounting hole, a front guard positioning groove, and a frame connection hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the front bumper assembly installation structure with a protective function provided by the utility model;

[0022] Figure 2 for Figure 1 A schematic diagram of the internal structure of the energy absorption box in the installation structure of the front bumper assembly with a protective function is shown;

[0023] Figure 3 for Figure 1 A schematic top view of the cross-sectional structure of the front bumper assembly installation structure with a protective function is shown;

[0024] Figure 4 for Figure 1 The schematic diagram of the structure of the energy absorption box in the installation structure of the front bumper assembly with a protective function is shown;

[0025] Figure 5 for Figure 1 The figure shows a schematic diagram of the structure of the front bumper mounting bracket in the front bumper assembly mounting structure with protective function.

[0026] Among them, the names corresponding to the figure marks are: 1-energy absorption box, 2-cover plate, 3-front guard mounting bracket, 4-airbag, 5-retraction frame, 6-spring, 7-guide plate, 8-guide groove, 9-guide bar, 10-front guard mounting hole, 11-front guard positioning groove, 12-frame connecting hole. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments. The present invention includes but is not limited to the following embodiments.

[0028] Example 1:

[0029] like Figure 1-5As shown, the front bumper assembly installation structure with a protective function provided by the utility model comprises: an energy absorption box 1, a cover plate 2 is installed on the energy absorption box 1, the cover plate 2 is fixedly connected to the front end frame of the car, a front bumper mounting bracket 3 is installed in the energy absorption box 1, the front bumper mounting bracket 3 is fixedly connected to the front bumper assembly of the car, an airbag 4 is installed in the energy absorption box 1, the front side of the airbag 4 is fixed to the rear end of the front bumper mounting bracket 3, the airbag 4 maintains a certain pressure, so that the front bumper mounting bracket 3 is fixed in the energy absorption box 1, thereby fixing the front bumper support, and a rubber stop frame 5 is fixedly installed in the energy absorption box 1, so that there is a gap of 3-5 cm between the airbag 4 and the inner wall of the rear end of the energy absorption box 1, and when the airbag 4 contacts the stop frame 5 and slides relative to it, a damping effect is generated. When in use, when the front bumper of the car After a collision with a pedestrian or obstacle in front with a certain force, under a smaller force, the front bumper pushes the front bumper mounting bracket 3 to move into the energy absorption box 1, and the front bumper mounting bracket 3 will squeeze the airbag, causing the airbag to deform, and then absorb the collision energy. Under a medium force, if the deformation of the airbag cannot absorb all the collision kinetic energy, the front bumper mounting bracket will push the airbag to deform more severely, and make the airbag pass the stop frame 5, so that the airbag 5 moves to the tail of the energy absorption box 1. The airbag 5 moves until it is close to the inner wall of the tail of the energy absorption box 1 and stops. When the airbag 5 moves, the friction between it and the inner wall of the energy absorption box 1 (especially between the stop frames 5) can further absorb the kinetic energy of the collision. Under a larger force, if it still cannot absorb all the kinetic energy, the front bumper mounting bracket 3 will continue to squeeze the airbag 4, causing it to deform, and even causing the airbag 4 to explode, producing an energy absorption effect. Through multiple progressive energy absorption, it can absorb energy from collisions of different impact intensities, and under small and medium impact intensities, it will not cause structural damage to the installation structure. It can be reused and can reduce maintenance costs.

[0030] By arranging an energy absorption box 1, a cover plate 2, a front bumper mounting bracket 3, an airbag 4 and a retaining frame 5, and using the airbag 4 with adjustable pressure, the front bumper mounting bracket 3 is fixed in the energy absorption box 1 for use, which can not only support the front bumper assembly, but also perform multiple progressive energy absorption on the impact suffered by the front bumper assembly, thereby avoiding damage to pedestrians by the rigid energy absorption structure and improving protection for pedestrians. In addition, the structure will not cause structural damage under small and medium impacts, which can help reduce maintenance costs.

[0031] Example 2:

[0032] In this embodiment, a triangular pyramid-shaped crushing nail is installed on the inner wall of the rear end of the energy absorption box 1, which is not shown in the figure. The tip of the crushing nail is aligned with the airbag 4, so that when the airbag 4 approaches and squeezes the rear end of the energy absorption box 1, it will first touch the crushing nail. The length of the crushing nail is slightly larger than the thickness of the airbag 4. Therefore, as the pressure on the airbag 4 increases, the crushing nail will gradually puncture the airbag 4, causing the airbag 4 to leak and release pressure after being punctured, thereby preventing the internal pressure of the airbag 4 from being too high and the resulting rigidity from being too strong, resulting in insufficient buffering force for pedestrians and causing pedestrian injuries.

[0033] By installing a crushing nail at the rear of the energy absorption box 1, the airbag 4 can be easily punctured to release the pressure of the airbag 4, thereby reducing the reaction force on the pedestrian and improving the protection of the pedestrian.

[0034] Example 3:

[0035] like Figure 2-3 As shown, a spring 6 is installed between the energy absorption box 1 and the front bumper mounting bracket 3. When in use, the front bumper mounting bracket 3 moves toward the inside of the energy absorption box 1, which will pull the spring 6 to extend. The extended spring 6 absorbs kinetic energy and can absorb energy. When it is hit, the contracted spring 6 will play a connecting and fixing role, so that the front bumper mounting bracket 3 can be stably fixed in the energy absorption box 1, thereby making the front bumper more stable.

[0036] By installing the spring 6 between the energy absorption box 1 and the front bumper mounting bracket 3 , the stability of the front bumper can be improved and the energy absorption effect can be achieved.

[0037] Example 4:

[0038] like Figure 2 and Figure 4 As shown, an integrally formed guide plate 7 is provided in the energy absorption box 1 , and both sides of the front guard mounting bracket 3 extend out from the energy absorption box 1 along the guide plate 7 , so that the front guard mounting bracket 3 moves along the guide plate 7 .

[0039] By providing an integrally formed guide plate 7 in the energy absorption box 1 , the movement of the front bumper mounting bracket 3 can be conveniently guided.

[0040] Example 5:

[0041] like Figure 4-5 As shown, guide grooves 8 are provided on the energy absorption box 1 and the cover plate 2, and guide bars 9 are installed on the top and bottom of the front guard mounting bracket 3. During installation, the guide bars 9 are inserted into the guide grooves 8, so that the front guard mounting bracket 3 moves along the direction of the guide grooves 8 when moving.

[0042] By providing the guide groove 8 and the guide bar 9 , the movement of the front bumper mounting bracket 3 can be conveniently guided.

[0043] Example 6:

[0044] like Figure 1 and Figure 5 As shown, a front bumper positioning groove 11 and a front bumper mounting hole 10 are provided on the front bumper mounting bracket 3, and a frame connecting hole 12 is provided on the cover plate 2. When in use, the positioning protrusion of the front bumper is aligned with the positioning groove 11 and inserted, and the front bumper mounting hole 10 is aligned with the hole position on the front bumper. The front bumper is installed at the front end of the front bumper mounting bracket 3 by screwing into the front bumper mounting hole 10. It is worth noting that the installation of the front bumper requires at least two front bumper mounting brackets 3. Similarly, the energy absorption box 1 can be installed on the front end frame of the car by screwing into the frame connecting hole 12.

[0045] By providing the front guard mounting hole 10, the front guard positioning groove 11, and the frame connecting hole 12, the connection between the structure and the automobile parts can be facilitated.

[0046] Working principle: When in use, when the front bumper of the car collides with a pedestrian or obstacle in front with a certain force, under a smaller force, the front bumper pushes the front bumper mounting bracket 3 to move into the energy absorption box 1, and the front bumper mounting bracket 3 will squeeze the airbag, causing the airbag to deform, and then absorb the collision energy. Under medium force, if the deformation of the airbag cannot absorb the complete collision kinetic energy, the front bumper mounting bracket will push the airbag to deform more severely, and make the airbag pass the stop frame 5, so that the airbag 5 moves to the tail of the energy absorption box 1. The movement of the airbag 5 stops until it is close to the inner wall of the tail of the energy absorption box 1. When the airbag 5 continues to move, its friction with the inner wall of the energy absorption box 1 (especially between the stop frames 5) can further absorb the kinetic energy of the collision. Under a larger force, if it still cannot absorb all the kinetic energy, the front bumper mounting bracket 3 will continue to squeeze the airbag 4, causing it to deform, and even causing the airbag 4 to explode, producing an energy absorption effect. Through multiple progressive energy absorption, it can absorb energy from collisions of different impact intensities, and under small and medium collision intensities, it will not cause structural damage to the installation structure and can be reused, thereby reducing maintenance costs.

Claims

1. A front bumper assembly mounting structure with a protective function, characterized in that: include: An energy absorption box (1) is provided with a cover plate (2) mounted on the energy absorption box (1), an air bag (4) is mounted in the energy absorption box (1), the front side of the air bag (4) is fixed to the rear end of a front bumper mounting bracket (3), a stop frame (5) is fixedly mounted in the energy absorption box (1), the cover plate (2) is connected to the front end frame of the automobile, and the front bumper mounting bracket (3) is connected to the front bumper assembly of the automobile.

2. The front bumper assembly mounting structure with a protective function according to claim 1, characterized in that: A crushing nail is installed at the tail of the energy absorption box (1).

3. The front bumper assembly mounting structure with a protective function according to claim 1, characterized in that: A spring (6) is installed between the energy absorption box (1) and the front guard mounting bracket (3).

4. The front bumper assembly mounting structure with a protective function according to claim 1, characterized in that: An integrally formed guide plate (7) is provided in the energy absorption box (1).

5. The front bumper assembly mounting structure with a protective function according to claim 1, characterized in that: Guide grooves (8) are provided on the energy absorption box (1) and the cover plate (2), and guide bars (9) are installed on the top and bottom of the front protection mounting bracket (3).

6. The front bumper assembly mounting structure with a protective function according to claim 1, characterized in that: The front guard mounting bracket (3) is provided with a front guard positioning groove (11) and a front guard mounting hole (10), and the cover plate (2) is provided with a frame connection hole (12).

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