Front bumper assembly

Abstract

The utility model discloses a front bumper assembly which comprises a chassis longitudinal beam provided with a first energy absorption box, channel steel fixedly installed on a chassis, a second energy absorption box fixedly installed on the chassis longitudinal beam, a third energy absorption box fixedly installed on the chassis longitudinal beam, a fourth energy absorption box fixedly installed on the second energy absorption box and a fifth energy absorption box fixedly installed on the second energy absorption box, the sliding part of the second energy absorption box is inserted into the first sliding groove and is in sliding connection with the side wall of the first sliding groove in the X-axis direction, cross beams arranged in the Y-axis direction are arranged on the two sides of the second energy absorption box correspondingly, inserting grooves allowing the energy absorption part of the second energy absorption box to be inserted are formed in the cross beams, and the energy absorption part is fixedly connected with the sliding part; a pushing plate abutting against the end wall of the energy absorption part is fixedly arranged in the inserting groove, the first energy absorption box is slidably connected with the cross beam in the Y-axis direction, when the front bumper is subjected to lateral impact load, the cross beam is pushed to move towards the second energy absorption box by component force in the Y-axis direction, and the second energy absorption box deforms to absorb the impact load. And therefore, the lateral impact bearing capability of the front bumper is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile bumper, in particular to the front bumper assembly. BACKGROUND

[0002] The front bumper assembly comprises a cross beam located at the front of the automobile, the cross beam is installed on the longitudinal beam of the automobile chassis, and an energy absorption box is installed between the cross beam and the longitudinal beam, wherein the cross beam is provided with an outer skin, a flow guide plate, a side support and a wing panel installed on the side support; the outer skin and the flow guide plate are mainly responsible for protecting the vehicle body and guiding airflow, and the cross beam, the energy absorption box and the side support can effectively absorb and alleviate the impact from the outside.

[0003] When the front part of the vehicle body bumper is impacted, the cross beam will move to the tail side and press the energy absorption box, and the energy absorption box absorbs the impact in the vertical direction of the front side of the bumper; if the automobile front bumper is impacted from the side, the wing panel will be impacted, and the impact energy is directly transmitted to the longitudinal beam of the chassis, the energy absorption box cannot play a role at this time, the lateral buffering capacity of the automobile is weak, and the chassis is easily damaged.

[0004] Therefore, how to design a front bumper assembly with improved lateral buffering capacity has become a technical problem to be solved by those skilled in the art. UTILITY MODEL CONTENT

[0005] In order to solve at least one technical problem mentioned in the background art, the purpose of the utility model is to provide a front bumper assembly to solve the problem of weak lateral impact bearing capacity of the front bumper damaging the chassis.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] The front bumper assembly comprises a chassis longitudinal beam fixedly installed on the chassis, a first energy absorption box fixedly installed at the front end of the chassis longitudinal beam, a channel steel fixedly installed on the chassis and arranged in parallel with the chassis longitudinal beam, the channel steel being arranged along the X-axis direction, the channel steel being provided with a first sliding groove with an opening facing upward, a second energy absorption box, a sliding part of the second energy absorption box being inserted into the first sliding groove and being connected with the side wall of the first sliding groove along the X-axis direction, the two sides of the second energy absorption box being respectively provided with a cross beam arranged along the Y-axis direction, the cross beam being provided with an insertion slot for inserting an energy absorption part of the second energy absorption box, the energy absorption part being fixedly connected with the sliding part, the insertion slot being fixedly provided with a push plate abutting against the end wall of the energy absorption part, and the first energy absorption box being connected with the cross beam along the Y-axis direction.

[0008] Further, the first connecting plate is fixedly arranged on one side of the chassis longitudinal beam close to the first energy absorption box, and the second connecting plate is further arranged, one end of the first energy absorption box is fixedly connected with the first connecting plate, and the other end of the first energy absorption box is fixedly connected with the second connecting plate, and the second connecting plate is slidably connected with the cross beam along the Y-axis direction.

[0009] Further, the first energy absorption box is provided with the first positioning baffle on one end, and the second positioning baffle is arranged on the other end, the first positioning baffle is fixedly connected with the first connecting plate through the first bolt, and the second positioning baffle is fixedly connected with the second connecting plate through the second bolt.

[0010] Further, a plurality of reinforcing ribs are fixedly arranged between the side wall of the chassis longitudinal beam and the first connecting plate.

[0011] Further, the first energy absorption box is provided with the energy absorption cavity, the energy absorption spring is arranged in the energy absorption cavity along the X-axis direction, one end of the energy absorption spring is abutted with the inner wall of the energy absorption cavity, and the other end of the energy absorption spring is abutted with the end wall of the second connecting plate.

[0012] Further, the cross beam is provided with the second sliding groove on one side wall close to the first energy absorption box, the sliding block is fixedly arranged on the second connecting plate and inserted into the second sliding groove, and the side wall of the sliding block is slidably connected with the inner wall of the second sliding groove along the Y-axis direction.

[0013] Further, the cross section of the second sliding groove is dovetail-shaped, and the sliding block is matched with the second sliding groove.

[0014] Further, the cross beam is provided with the waist-shaped hole arranged along the Y-axis direction on one side close to the first energy absorption box, the second bolt extends into the inner cavity of the cross beam through the waist-shaped hole, the nut is threadedly connected with the second bolt, and the end wall of the nut is abutted with the inner wall of the inner cavity of the cross beam.

[0015] Further, the cross beam is provided with the placing hole opposite to the waist-shaped hole on the side away from the first energy absorption box.

[0016] Compared with the prior art, the utility model has the advantages that: the first energy absorption box and the cross beam are slidably connected along the Y-axis direction, the second energy absorption box is arranged at the end of the cross beam, when the front bumper is subjected to the lateral impact load, one of the cross beams is pushed to move the cross beam to the second energy absorption box along the Y-axis direction, the second energy absorption box is deformed to absorb the impact load, thereby improving the ability of the front bumper to bear the lateral impact, and only one side of the cross beam is damaged at this time, compared with the traditional front bumper replacing the whole cross beam, the loss cost is reduced.

[0017] When the current bumper is subjected to a positive load, the two cross beams become integrated under the action of the second energy absorption box, and during the positive impact process, the two cross beams and the second energy absorption box move to the rear side of the vehicle, and at the same time, the second energy absorption boxes on both sides are extruded to absorb the positive impact load. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the expansion of the cross beam;

[0020] Figure 3 It is a schematic diagram of the installation of the first energy absorption box;

[0021] Figure 4 It is a first angle sectional view of the utility model;

[0022] Figure 5 It is a second angle sectional view of the utility model.

[0023] In the drawing: 1, channel steel; 10, first sliding groove; 2, chassis longitudinal beam; 21, first connecting plate; 22, reinforcing rib; 3, cross beam; 31, second sliding groove; 32, plug-in slot; 321, push plate; 33, waist-shaped hole; 34, placing hole; 4, first energy absorption box; 40, energy absorption cavity; 41, first positioning baffle; 42, second positioning baffle; 5, second energy absorption box; 51, energy absorption part; 52, sliding part; 6, energy absorption spring; 7, second connecting plate; 71, sliding block; 81, first bolt; 82, second bolt. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be described clearly and completely below, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] The embodiment provides a front bumper assembly, which is mainly used for improving the ability of the front bumper to resist lateral impact.

[0026] Here, the direction is redefined, as shown in the three coordinate axes in Figure 1 X-axis direction is the length direction of the automobile; Y-axis direction is the width direction of the automobile; and Z-axis direction is the height direction of the automobile.

[0027] As shown in Figure 1As shown, it comprises a channel steel 1 fixedly installed on the chassis of the automobile, wherein the channel steel 1 is arranged along the X-axis direction, and the channel steel 1 is provided with a first sliding groove 10 with an upward opening, and it is worth noting that the cross section of the first sliding groove 10 is in the shape of a C with an upward opening.

[0028] The chassis is provided with chassis longitudinal beams 2 located on both sides of the channel steel 1 and arranged in parallel with the channel steel 1, wherein the chassis longitudinal beams 2 are fixedly installed with first energy-absorbing boxes 4 at the end close to the front of the automobile, and further comprising cross beams 3 arranged along the Y-axis direction, wherein the cross beams 3 are connected with the chassis longitudinal beams 2 through the first energy-absorbing boxes 4.

[0029] The first sliding groove 10 is provided with a second energy-absorbing box 5 slidingly connected along the X-axis direction, wherein the cross beam 3 is provided with two cross beams 3 respectively located on both sides of the second energy-absorbing box 5, and the two cross beams 3 are distributed along the Y-axis direction, as Figure 2 As shown, the end of the cross beam 3 is provided with a plug-in groove 32, and the two ends of the second energy-absorbing box 5 are respectively plugged into the plug-in grooves 32 on both sides; the cross beam 3 and the first energy-absorbing box 4 on the same side are slidingly connected along the Y-axis direction.

[0030] It is worth noting here that the plug-in groove 32 is provided with a push plate 321, and when the second energy-absorbing box 5 is plugged into the plug-in groove 32, at this time, the second energy-absorbing box 5 abuts against the push plate 321.

[0031] Through the above arrangement, when the front of the bumper is subjected to impact load, at this time, the two cross beams 3 are integrated under the action of the second energy-absorbing box 5, and with the impact, the cross beam 3 and the second energy-absorbing box 5 move to the side of the tail along the X-axis direction, and since the chassis longitudinal beams 2 and the channel steel 1 are fixed, the cross beam 3 extrudes the first energy-absorbing box 4, and the deformation of the first energy-absorbing box 4 absorbs the impact load, reducing the damage degree of the chassis.

[0032] When the bumper is subjected to lateral impact load, at this time, the component of the impact load in the Y-axis direction will push the cross beam 3 on one side to move to the side of the channel steel 1, and since the second energy-absorbing box 5 only slides along the X-axis direction, the second energy-absorbing box 5 is limited in the Y-axis direction, the cross beam 3 and the first energy-absorbing box 4 move relatively along the Y-axis direction, and then extrude the second energy-absorbing box 5, and the second energy-absorbing box 5 absorbs the lateral impact load of the front bumper, improving the ability of the front bumper to resist lateral impact.

[0033] It is worth mentioning here that the traditional cross beam 3 is generally a whole, when the cross beam 3 is damaged by impact, the whole cross beam 3 needs to be replaced, but in the technical scheme, when the cross beam 3 is impacted laterally, only one of the cross beams 3 will be impacted, and then the second energy absorption box 5 is used for energy absorption treatment, and the other cross beam 3 is not affected in the case of slight impact, so that the replacement cost of the cross beam 3 can be reduced.

[0034] In order to realize the installation of the second energy absorption box 5, in the embodiment, as shown in Figure 1 and Figure 2 , the second energy absorption box 5 comprises an energy absorption part 51 and a sliding part 52, wherein the energy absorption part 51 is horizontally arranged and inserted into the two-sided plug-in slot 32 at both ends, the end wall of the energy absorption part 51 abuts against the push plate 321, and the sliding part 52 is fixedly installed on the bottom wall of the energy absorption part 51 and vertically extends downward, the sliding part 52 is plugged into the first sliding groove 10, and the side wall of the sliding part 52 abuts against the side wall of the first sliding groove 10.

[0035] It is worth mentioning here that the top wall of the channel steel 1 is lower than the bottom wall of the cross beam 3, so as to avoid collision between the cross beam 3 and the channel steel 1 when the cross beam 3 moves along the Y-axis direction.

[0036] When the bumper is currently subjected to impact load, the first energy absorption box 4 will be damaged due to absorbing the impact load, so that the first energy absorption box 4 needs to be replaced later, in the embodiment, as shown in Figure 1 , Figure 3 and Figure 5 , the first connecting plate 21 is arranged on the side close to the car head of the chassis longitudinal beam 2, and the second connecting plate 7 is slidably connected with the cross beam 3 along the Y-axis direction, wherein one end of the first energy absorption box 4 is fixedly connected with the first connecting plate 21, and the other end of the first energy absorption box 4 is fixedly connected with the second connecting plate 7.

[0037] Specifically, in the embodiment, as shown in Figure 3 , one end of the first energy absorption box 4 is provided with a first positioning stop edge 41, and the other end of the first energy absorption box 4 is provided with a second positioning stop edge 42, wherein the first positioning stop edge 41 is fixedly connected with the first connecting plate 21 through the first bolt 81, and the second positioning stop edge 42 is fixedly connected with the second connecting plate 7 through the second bolt 82.

[0038] In order to strengthen the ability of the first energy absorption box 4 to absorb impact load, in the embodiment, as shown in Figure 3 and Figure 5 , the first energy absorption box 4 is provided with an energy absorption cavity 40, and the energy absorption spring 6 arranged along the X-axis direction is arranged in the energy absorption cavity 40, wherein one end of the energy absorption spring 6 abuts against the inner wall of the energy absorption cavity 40, and the other end of the energy absorption spring 6 abuts against the end wall of the second connecting plate 7.

[0039] It is worth mentioning here that the energy absorption cavity 40 of the first energy absorption box 4 is opened outward on one side to install the energy absorption spring 6 in the energy absorption cavity 40, and then the opening of the energy absorption cavity 40 is blocked by the second connecting plate 7, which can prevent the energy absorption spring 6 from moving out of the first energy absorption box 4.

[0040] Through the above setting, when the current bumper is impacted by a positive load, after the first energy absorption box 4 is damaged, the first energy absorption box 4 can be replaced by removing the first bolt 81 and the second bolt 82.

[0041] When the current bumper is impacted by a positive load, in order to reduce the risk of damage to the first connecting plate 21, in the embodiment, as shown in Figure 3 , a plurality of reinforcing ribs 22 are welded between the first connecting plate 21 and the side wall of the chassis longitudinal beam 2.

[0042] In order to realize the sliding connection between the second connecting plate 7 and the cross beam 3, in the embodiment, as shown in Figure 2 and Figure 5 , the cross beam 3 is provided with a second sliding groove 31 on the side wall close to the tail, and the second connecting plate 7 is fixedly provided with a sliding block 71 inserted into the second sliding groove 31, wherein the side wall of the sliding block 71 and the inner wall of the second sliding groove 31 are slidingly connected along the Y-axis direction.

[0043] In order to stabilize the sliding of the cross beam 3 along the Y-axis direction, in the embodiment, as shown in Figure 5 , the second sliding groove 31 is a dovetail groove, and the cross section of the sliding block 71 is adapted to the second sliding groove 31.

[0044] In order to further improve the stability of the cross beam 3 and prevent the relative movement of the cross beam 3 and the second connecting plate 7 along the X-axis direction, in the embodiment, as shown in Figure 2 and Figure 5 , the cross beam 3 is provided with a waist-shaped hole 33 arranged along the Y-axis direction, wherein the second bolt 82 extends into the inner cavity of the cross beam 3 through the second connecting plate 7 and the waist-shaped hole 33, and then a nut is installed on the second bolt 82, so that the end wall of the nut abuts against the end wall of the inner cavity of the cross beam 3, thereby improving the stability of the installation of the second connecting plate 7 and the cross beam 3.

[0045] In order to facilitate the installation of the nut, in the embodiment, as shown in Figure 5 , the cross beam 3 is provided with a placement hole 34 on the side away from the chassis longitudinal beam 2, wherein the placement hole 34 is aligned with the waist-shaped hole 33, and the nut can extend into the inner cavity of the cross beam 3 from the placement hole 34, thereby facilitating the cooperation between the second bolt 82 and the nut and realizing the installation of the second connecting plate 7.

[0046] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the present application being defined by the appended claims rather than the above description, and all changes coming within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A front bumper assembly comprising a chassis longitudinal beam (2) fixedly mounted on a chassis, a front end of the chassis longitudinal beam (2) being fixedly mounted with a first energy absorption box (4), characterized in that: The utility model also includes the channel steel (1) fixedly installed on the chassis and arranged in parallel with the chassis longitudinal beam (2), the channel steel (1) is arranged along the X axle direction, and the channel steel (1) is equipped with the first sliding groove (10) with the opening upwards, further includes the second energy absorption box (5), the sliding part (52) of second energy absorption box (5) is inserted into the first sliding groove (10) and is connected with the first sliding groove (10) side wall along the X axle direction sliding, and the both sides of second energy absorption box (5) are equipped with the crossbeam (3) along the Y axle direction, the crossbeam (3) is equipped with the insertion slot (32) for the energy absorption part (51) of second energy absorption box (5) insertion, and the energy absorption part (51) is fixedly connected with the sliding part (52), and the insertion slot (32) is fixedly equipped with the push plate (321) with the end wall of energy absorption part (51) abutment, and the first energy absorption box (4) is connected with the crossbeam (3) along the Y axle direction sliding.

2. The front bumper assembly of claim 1, wherein: The first connecting plate (21) is fixedly arranged on the side of the chassis longitudinal beam (2) close to the first energy absorption box (4), and the second connecting plate (7) is further included, one end of the first energy absorption box (4) is fixedly connected with the first connecting plate (21), the other end of the first energy absorption box (4) is fixedly connected with the second connecting plate (7), and the second connecting plate (7) is slidably connected with the crossbeam (3) along the Y axle direction.

3. The front bumper assembly of claim 2, wherein: The first energy absorption box (4) is provided with a first positioning baffle (41) at one end thereof, and is provided with a second positioning baffle (42) at the other end thereof, the first positioning baffle (41) is fixedly connected with the first connecting plate (21) through a first bolt (81), and the second positioning baffle (42) is fixedly connected with the second connecting plate (7) through a second bolt (82).

4. The front bumper assembly of claim 2, wherein: A plurality of reinforcing ribs (22) are fixedly arranged between the side wall of the chassis longitudinal beam (2) and the first connecting plate (21).

5. The front bumper assembly of claim 2, wherein: The first energy absorption box (4) is provided with an energy absorption cavity (40) therein, the energy absorption cavity (40) is provided with an energy absorption spring (6) arranged along the X axle direction, one end of the energy absorption spring (6) abuts against the inner wall of the energy absorption cavity (40), and the other end of the energy absorption spring (6) abuts against the end wall of the second connecting plate (7).

6. The front bumper assembly of claim 2 or 5, characterized in that: The crossbeam (3) is provided with a second sliding groove (31) on the side wall of the side thereof close to the first energy absorption box (4), and the second connecting plate (7) is fixedly provided with a sliding block (71) inserted into the second sliding groove (31), the side wall of the sliding block (71) is slidably connected with the inner wall of the second sliding groove (31) along the Y axle direction.

7. The front bumper assembly of claim 6, characterized in that: The cross section of the second sliding groove (31) is dovetail-shaped, and the sliding block (71) is adapted to the second sliding groove (31).

8. The front bumper assembly of claim 3, wherein: The crossbeam (3) is provided with a waist-shaped hole (33) arranged along the Y axle direction on the side thereof close to the first energy absorption box (4), the second bolt (82) extends into the inner cavity of the crossbeam (3) through the waist-shaped hole (33), a nut is threadedly connected to the second bolt (82), and the end wall of the nut abuts against the inner wall of the inner cavity of the crossbeam (3).

9. The front bumper assembly of claim 8, characterized in that: The crossbeam (3) is provided with a placement hole (34) aligned with the waist-shaped hole (33) on the side thereof away from the first energy absorption box (4).

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