Anti-collision beam, anti-collision beam assembly and vehicle

Abstract

The utility model belongs to the technical field of vehicles, and particularly relates to an anti-collision beam, an anti-collision beam assembly and a vehicle. The anti-collision beam comprises an anti-collision beam body and at least one reinforcing rib, the anti-collision beam body is provided with a closed gas storage cavity, the reinforcing ribs are arranged in the gas storage cavity, the gas storage cavity is divided into a plurality of sub gas storage cavities distributed in the height direction of the reinforcing rib body by the reinforcing ribs, and the sub gas storage cavities are communicated with one another. According to the anti-collision beam, the closed air storage cavity is formed in the anti-collision beam body, so that the anti-collision beam body has the air storage function, an air storage tank and related mounting structures of the air storage tank can be omitted for the vehicle adopting the anti-collision beam, and therefore the weight of the whole vehicle is reduced, and the cost of the whole vehicle is reduced; the whole vehicle arrangement space is saved; and the trafficability of the whole vehicle is improved. Furthermore, reinforcing ribs are arranged in the air storage cavity, the deformation resistance of the anti-collision beam body in the limit air storage pressure intensity state can be improved, and meanwhile the reinforcing ribs are beneficial to improving the deformation resistance of the anti-collision beam body under the collision working condition.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a bumper beam, a bumper beam assembly and a vehicle. Background Art

[0002] An air spring air storage tank is an air storage device in an automobile, which is used to store rated high-pressure air within an effective pressure maintaining time. The air spring air storage tank is connected to an air spring in a conducting manner and is used to supply air to the air spring.

[0003] In the prior art, generally, the air spring air storage tank is arranged at the rear of the whole vehicle, such as at the bottom of the trunk, and is connected to the vehicle body by means of a mounting bracket; or the air spring air storage tank is arranged at the front of the whole vehicle, such as on the front subframe or the front top cross beam, and is connected by means of a mounting bracket or directly welded.

[0004] The deficiencies of the prior art are as follows: First, the air storage tank is heavy, and the vehicle body also needs to be equipped with additional mounting brackets and reinforcing beams and other structures, resulting in an increase in the weight of the whole vehicle. Second, the air storage tank is large in volume. When arranged at the rear of the vehicle, it occupies the rear layout space, affects the trunk volume, and also affects the layout space of other rear functional modules; when arranged at the front of the vehicle, it occupies the front engine compartment layout space and affects the layout space of each module in the front engine compartment. Third, when the air storage tank is installed at the rear of the vehicle, the distance from the ground is small, affecting the passing performance and endangering driving safety. Finally, the cost of the air storage tank is high, and at the same time, the installation structure matching the air storage tank also requires additional costs, resulting in an increase in the overall cost. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a bumper beam, a bumper beam assembly and a vehicle, which can reduce the weight of the whole vehicle, reduce the cost of the whole vehicle, save the layout space of the whole vehicle, improve the passing performance of the whole vehicle, and the bumper beam has excellent anti-deformation ability under the ultimate air storage pressure and collision conditions.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The bumper beam includes:

[0008] A bumper beam body having a sealed air storage cavity, and an interface communicating with the air storage cavity is provided on the bumper beam body;

[0009] At least one reinforcing rib is arranged in the bumper beam body, and the reinforcing rib divides the air storage cavity into a plurality of sub-air storage cavities distributed along the height direction of the bumper beam body, and the plurality of sub-air storage cavities communicate with each other.

[0010] As a preferred technical solution of the anti-collision beam, the anti-collision beam body includes a beam body and two end caps. Both ends of the beam body in the length direction have openings, and the two end caps respectively close the two openings. The beam body and the two end caps jointly enclose to form the air storage cavity.

[0011] As a preferred technical solution of the anti-collision beam, a positioning boss is provided at one end of the end cap facing the beam body, and the positioning boss is inserted into the beam body.

[0012] As a preferred technical solution of the anti-collision beam, the reinforcing rib extends along the length direction of the anti-collision beam. The length of the reinforcing rib is less than the length of the anti-collision beam body. There is a gap between both ends of the reinforcing rib and the same-side ends of the anti-collision beam body, and the gap forms a communication channel for multiple sub-air storage cavities.

[0013] As a preferred technical solution of the anti-collision beam, the interface is arranged at the bottom of the anti-collision beam body, and the interface is aligned with any one of the communication channels on both sides of the reinforcing rib.

[0014] As a preferred technical solution of the anti-collision beam, the air storage volume of the air storage cavity is greater than or equal to 10L.

[0015] As a preferred technical solution of the anti-collision beam, the wall thickness of the anti-collision beam body is 3mm - 5mm, and the thickness of the reinforcing rib is 2mm - 4mm.

[0016] The anti-collision beam assembly includes the anti-collision beam according to any one of the above solutions, and further includes an energy absorption box, and the energy absorption box is arranged on the anti-collision beam body.

[0017] As a preferred technical solution of the anti-collision beam assembly, it further includes an end plate. The end plate is arranged on the energy absorption box and is used for connecting with the vehicle body;

[0018] A plurality of bolt holes are formed in the end plate, and at least part of the projections of the bolt holes in the thickness direction of the anti-collision beam body are located on the anti-collision beam body. At least one avoidance hole penetrating along the thickness direction of the anti-collision beam body is formed in the anti-collision beam body. The avoidance holes correspond to the bolt holes projected on the anti-collision beam body one by one. A sleeve is arranged in each avoidance hole, and the sleeve is hermetically connected to the two side walls of the anti-collision beam body in the thickness direction.

[0019] The vehicle includes the anti-collision beam assembly according to any one of the above solutions, and further includes a vehicle body and an air spring. The energy absorption box is connected to the vehicle body, and the air storage cavity is connected to the air spring through the interface.

[0020] The beneficial effects of the present utility model:

[0021] The present utility model provides a bumper beam. By arranging a sealed gas storage cavity inside the bumper beam body, the bumper beam body can have the function of storing gas at the same time. For a vehicle adopting this bumper beam, the gas storage tank and its related installation structures can be omitted, thereby reducing the weight of the whole vehicle and the cost of the whole vehicle; saving the layout space of the whole vehicle and improving the layout freedom; improving the passing performance of the whole vehicle and avoiding the risk of the gas storage tank rubbing against the ground. Further, by arranging at least one reinforcing rib in the gas storage cavity and dividing the gas storage cavity into multiple sub-gas storage cavities distributed along the height direction of the reinforcing rib body, the anti-deformation ability of the bumper beam body under the extreme gas storage pressure state can be improved, and the deformation of the bumper beam body under the internal pressure can be avoided. At the same time, the reinforcing rib is beneficial to improving the anti-deformation ability of the bumper beam body under the collision condition and reducing the intrusion amount of the bumper beam body into the vehicle body. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of a bumper beam assembly provided by an embodiment of the present utility model;

[0023] Figure 2 is an exploded structural diagram of a bumper beam assembly provided by an embodiment of the present utility model;

[0024] Figure 3 is a partial schematic diagram of a bumper beam assembly provided by an embodiment of the present utility model Figure 1 ;

[0025] Figure 4 is a partial schematic diagram of a bumper beam assembly provided by an embodiment of the present utility model Figure 2 ;

[0026] Figure 5 is a partial schematic diagram of a bumper beam assembly provided by an embodiment of the present utility model Figure 3 .

[0027] In the figure:

[0028] 10, bumper beam body; 11, beam body; 111, interface; 112, avoidance hole; 12, end cover; 20, reinforcing rib; 30, joint; 40, energy absorption box; 50, end plate; 51, bolt hole; 60, sleeve; 70, bolt. Detailed Embodiment

[0029] The present utility model will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the convenience of description, only some parts related to the present utility model are shown in the drawings, rather than all the structures.

[0030] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include that the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "above the", and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below the", and "under the" second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0032] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0033] As Figures 1 to 5 shown, the present utility model provides an anti-collision beam, which is a protection device in an automobile for absorbing collision energy to reduce the damage of the vehicle caused by collision. In this embodiment, the anti-collision beam is a rear anti-collision beam located at the rear of the vehicle body, but it is not limited thereto, and it may also be an anti-collision beam located at other positions of the vehicle body. The anti-collision beam includes an anti-collision beam body 10 and at least one reinforcing rib 20. The anti-collision beam body 10 has a sealed air storage cavity, and at least one reinforcing rib 20 is arranged in the air storage cavity. Each reinforcing rib 20 connects the two side walls of the anti-collision beam body 10 along the thickness direction of the anti-collision beam body 10. The reinforcing rib 20 divides the air storage cavity into a plurality of sub-air storage cavities distributed along the height direction of the anti-collision beam body 10, and the plurality of sub-air storage cavities communicate with each other. In this embodiment, the number of the reinforcing ribs 20 is two, and the two reinforcing ribs 20 divide the air storage cavity into three sub-air storage cavities distributed along the height direction of the reinforcing rib 20 body. Of course, the number of the reinforcing ribs 20 is not limited thereto.

[0034] By arranging a sealed gas storage cavity inside the anti-collision beam body 10, the anti-collision beam body 10 can have the function of storing gas. For a vehicle adopting this anti-collision beam, the gas storage tank and its related installation structures can be omitted, thereby reducing the weight of the whole vehicle and the cost of the whole vehicle; saving the layout space of the whole vehicle and improving the layout freedom; improving the passability of the whole vehicle and avoiding the risk of the gas storage tank rubbing against the ground. Further, by arranging at least one reinforcing rib 20 inside the gas storage cavity and dividing the gas storage cavity into multiple sub-gas storage cavities distributed along the height direction of the anti-collision beam body 10, the anti-deformation ability of the anti-collision beam body 10 under the extreme gas storage pressure state can be improved, and the anti-collision beam body 10 can be prevented from deforming under the action of internal pressure (i.e., the cross-sectional shape changes from a "mouth" shape to an "O" shape). At the same time, the reinforcing rib 20 is beneficial to improving the anti-deformation ability of the anti-collision beam body 10 under the collision condition and reducing the intrusion amount of the anti-collision beam body 10 into the vehicle body.

[0035] Specifically, the anti-collision beam body 10 includes a beam body 11 and two end caps 12. Both ends of the beam body 11 in the length direction have openings, and the two end caps 12 respectively seal the two openings. The beam body 11 and the two end caps 12 jointly enclose a sealed gas storage cavity. Optionally, a positioning boss is machined at one end of the end cap 12 facing the beam body 11. The positioning boss is inserted and matched with the cavity of the beam body 11. While realizing the positioning of the end cap 12 and the beam body 11, the connection reliability is improved, and then the end cap 12 and the beam body 11 are connected by welding to realize the sealing of the gas storage cavity. Optionally, the end cap 12 and the beam body 11 can be connected by CMT (cold metal transfer) welding process.

[0036] In this embodiment, the reinforcing rib 20 extends along the length direction of the anti-collision beam body 10. The length of the reinforcing rib 20 is less than the length of the anti-collision beam body 10. There are gaps between both ends of the reinforcing rib 20 and the end cap 12 on the same side, and the gaps are the communication channels of the multiple sub-gas storage cavities. Optionally, the distance between the end of the reinforcing rib 20 and the end cap 12 on the same side is 20 mm - 50 mm.

[0037] An interface 111 communicating with the gas storage cavity is arranged on the anti-collision beam body 10. The interface 111 is located at the bottom of the anti-collision beam body 10, and the interface 111 is directly opposite to any one of the communication channels on both sides of the reinforcing rib 20, that is, the projection of the interface 111 along the height direction of the anti-collision beam body 10 is located in the communication channel, that is, the interface 111 is not blocked by the reinforcing rib 20 to reduce the noise generated by the inflation airflow. The interface 111 is used for welding and installing a nozzle base, the nozzle base is used for installing a general joint 30, the joint 30 is used for installing a nozzle, and the nozzle is used for connecting with an air spring air pump, so as to realize the connection between the gas storage cavity and the air spring air pump.

[0038] In this embodiment, the anti-collision beam body 10 realizes the expansion of the volume through the expansion of the cross-section type, so that the gas storage volume of the gas storage cavity is greater than or equal to 10L to meet the gas storage volume requirement of the air spring.

[0039] In this embodiment, the anti-collision beam body 10 is arc-shaped and has a large radius of curvature, for example, the radius of curvature is greater than 2600mm. This avoids the generation of granular structures on the inner metal tensile surface of the gas storage cavity due to excessive stretching during the stretch-bending process. After the stretch-bending process, it is necessary to perform high-pressure cleaning and air blowing treatment on the inner surface of the gas storage cavity to avoid leaving dust and impurities inside to meet the cleanliness requirements of the gas storage cavity. Or in other embodiments, the anti-collision beam body 10 may not be provided with a curvature.

[0040] The load-bearing air pressure requirement of the gas storage cavity is 15 bar - 20 bar in the working state and 50 bar - 60 bar in the ultimate bursting state. To meet this requirement, it is necessary to use an anti-collision beam body 10 with a larger thickness. Conventional gas storage tanks are designed as cylindrical with equal thickness, and the wall thickness is 1.5 mm - 3 mm. In this embodiment, the wall thickness of the anti-collision beam body 10 is designed to be 3 mm - 5 mm to prevent cracking or deformation due to the inability to bear the air pressure at stress concentration points such as the cut-off corners or at the connection between the beam body 11 and the end cover 12. The thickness of the reinforcing rib 20 is designed to be 2 mm - 4 mm to improve the anti-deformation ability of the anti-collision beam body 10 under the ultimate gas storage pressure state.

[0041] As Figures 1 to 5 shown, the present utility model also provides an anti-collision beam assembly, which includes the above-mentioned anti-collision beam, and also includes two energy absorption boxes 40 and two end plates 50. Both of the two energy absorption boxes 40 are arranged on the anti-collision beam body 10, and the two energy absorption boxes 40 are spaced apart along the length direction of the anti-collision beam body 10. The two end plates 50 are correspondingly arranged on the two energy absorption boxes 40, and the end plates 50 are used to connect with the vehicle body. The energy absorption box 40 is communicated with the gas storage cavity, and the energy absorption box 40 can assist in absorbing the impact energy generated by the collision when the anti-collision beam collides.

[0042] In this embodiment, the anti-collision beam body 10 is connected to the energy absorption box 40 and the energy absorption box 40 is connected to the end plate 50 by welding. Optionally, the anti-collision beam body 10 can be connected to the energy absorption box 40 and the energy absorption box 40 can be connected to the end plate 50 by using the MAG (Metal Active Gas Arc Welding, argon-rich mixed gas protection) welding process.

[0043] The end plate 50 is provided with a plurality of bolt holes 51, through which bolts 70 connect the end plate 50 to the vehicle body. Due to the enlarged cross-section of the anti-collision beam body 10, the projections of some of the bolt holes 51 connecting the end plate 50 along the thickness direction of the anti-collision beam body 10 are located on the anti-collision beam body 10, that is, they are blocked by the anti-collision beam body 10. In other words, the working path of the tool for installing the bolts 70 is blocked by the anti-collision beam body 10. Therefore, the anti-collision beam body 10 is provided with at least one avoidance hole 112 that passes through along its thickness direction. The avoidance holes 112 correspond one-to-one with the bolt holes 51 on the end plate 50 that are blocked by the anti-collision beam body 10. Each avoidance hole 112 is provided with a sleeve 60, which is sealed to the two side walls of the anti-collision beam body 10 along the thickness direction. The sleeve 60 not only prevents the installation of the bolt 70 , but also strengthens the pressure resistance of the anti-collision beam body 10 by connecting the two side walls of the anti-collision beam body 10 along the thickness direction.

[0044] In this embodiment, each end plate 50 is provided with four bolt holes 51, that is, each end plate 50 is connected to the vehicle body by four bolts 70, and the four bolt holes 51 are distributed at the four corners of the end plate 50. The two bolt holes 51 located at the upper part are not blocked by the anti-collision beam body 10, and the two bolt holes 51 located at the lower part are blocked by the anti-collision beam body 10. Therefore, a total of four avoidance holes 112 are provided on the anti-collision beam body 10, of which two avoidance holes 112 correspond to the two bolt holes 51 located at the lower part of one end plate 50, and the other two avoidance holes 112 correspond to the two bolt holes 51 located at the lower part of the other end plate 50.

[0045] In this embodiment, the sleeve 60 is connected to both side walls of the anti-collision beam body 10 along the thickness direction by welding. Alternatively, the sleeve 60 and both side walls of the anti-collision beam body 10 along the thickness direction can be connected using a CMT (cold metal transfer) welding process.

[0046] The present invention also provides a vehicle, comprising the above-mentioned anti-collision beam assembly, a vehicle body and an air spring, wherein the end plate 50 is connected to the vehicle body, and the air storage chamber is connected to the air spring through the interface 111, and the air storage chamber is used to supply air to the air spring.

[0047] The vehicle provided by the utility model can eliminate the need for a gas tank and its related mounting structure by adopting the above-mentioned anti-collision beam assembly, thereby reducing the weight of the entire vehicle and lowering the entire vehicle cost; saving the entire vehicle layout space and increasing the layout freedom; improving the vehicle's passability and avoiding the risk of the gas tank rubbing against the ground.

[0048] Obviously, the above-mentioned embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present utility model. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. Anti-collision beam, characterized in that, Comprising: An anti-collision beam body (10) having a sealed gas storage cavity, and an interface (111) communicating with the gas storage cavity is provided on the anti-collision beam body (10); At least one reinforcing rib (20) is disposed within the anti-collision beam body (10), and the reinforcing rib (20) divides the gas storage cavity into a plurality of sub-gas storage cavities distributed along the height direction of the anti-collision beam body (10), and the plurality of sub-gas storage cavities communicate with each other.

2. The anti-collision beam according to claim 1, characterized in that, The anti-collision beam body (10) includes a beam body (11) and two end caps (12). Both ends of the beam body (11) in the length direction have openings, and the two end caps (12) respectively close the two openings. The beam body (11) and the two end caps (12) jointly enclose to form the gas storage cavity.

3. The anti-collision beam according to claim 2, characterized in that, A positioning boss is provided at one end of the end cap (12) facing the beam body (11), and the positioning boss is inserted into the beam body (11).

4. The anti-collision beam according to claim 1, characterized in that, The reinforcing rib (20) extends along the length direction of the anti-collision beam. The length of the reinforcing rib (20) is less than the length of the anti-collision beam body (10). There are gaps between both ends of the reinforcing rib (20) and the same-side ends of the anti-collision beam body (10), and the gaps form communication channels for the plurality of sub-gas storage cavities.

5. The anti-collision beam according to claim 4, wherein The interface (111) is provided at the bottom of the anti-collision beam body (10), and the interface (111) is directly opposite to any one of the communication channels on both sides of the reinforcing rib (20).

6. The anti-collision beam according to any one of claims 1-5, characterized in that The gas storage volume of the gas storage cavity is greater than or equal to 10L.

7. The anti-collision beam according to any one of claims 1-5, characterized in that The wall thickness of the anti-collision beam body (10) is 3mm - 5mm, and the thickness of the reinforcing rib (20) is 2mm - 4mm.

8. Anti-collision beam assembly, characterized in that, Comprising the anti-collision beam according to any one of claims 1 - 7, further comprising an energy absorption box (40), and the energy absorption box (40) is disposed on the anti-collision beam body (10).

9. The bumper beam assembly according to claim 8, wherein, Further comprising an end plate (50), the end plate (50) is disposed on the energy absorption box (40), and the end plate (50) is used for connecting with the vehicle body; A plurality of bolt holes (51) are formed in the end plate (50), and at least a part of the bolt holes (51) is projected on the anti-collision beam body (10) along the thickness direction of the anti-collision beam body (10). At least one avoidance hole (112) penetrating along its own thickness direction is formed in the anti-collision beam body (10). The avoidance holes (112) correspond to the bolt holes (51) projected on the anti-collision beam body (10) one by one. A sleeve (60) is disposed in each avoidance hole (112), and the sleeve (60) is hermetically connected to the two side walls of the anti-collision beam body (10) along the thickness direction.

10. A vehicle, characterized in that, Comprising the anti-collision beam assembly according to claim 8 or 9, further comprising a vehicle body and an air spring. The energy absorption box (40) is connected to the vehicle body, and the gas storage cavity is connected to the air spring through the interface (111).

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