Rear anti-collision beam of automobile

Abstract

The invention provides an automobile rear anti-collision beam. The automobile rear anti-collision beam comprises a beam body. The two energy absorption devices are installed at the two ends of the beam body in the first direction respectively, each energy absorption device is of a hollow structure and extends in the second direction, each energy absorption device is provided with an energy absorption induction groove extending in the first direction, and each energy absorption induction groove is a recess formed by inwards protruding and bending the corresponding energy absorption device; wherein the first direction is crossed with the second direction. By means of the arrangement, when the rear portion of the automobile is collided in the second direction, the bent and sunken energy absorption induction groove can guide the energy absorption device to be folded and deformed in the second direction, and therefore collision energy from a rear automobile is effectively absorbed.

Description

Technical Field

[0001] The present application relates to the technical field of automobile accessories, and in particular to a rear anti-collision beam for an automobile. Background Art

[0002] The rear anti-collision beam of a car is located at the rear end of the car body and is used to cushion and absorb energy when the car collides from the rear.

[0003] At present, the rear anti-collision beam structure of automobiles on the market is relatively simple, and only uses a metal beam and a mounting bracket structure to be fixed at the rear end of the vehicle body, and the collision energy absorption effect is poor. In the low-speed collision condition of automobiles (speed less than 15km / h), the rear vehicle rear-ends the front vehicle, and the low-speed collision of the rear vehicle on the front vehicle will cause large-scale deformation of the rear floor, rear panel and other areas of the body frame of the front vehicle, and the damage to the rear-end vehicle is relatively large, causing users to suffer relatively heavy repair cost losses. Summary of the invention

[0004] In view of this, the present application provides a rear anti-collision beam for an automobile, which can effectively absorb collision energy and reduce the degree of damage to the automobile when it is hit.

[0005] Specifically, the following technical solutions are included:

[0006] The embodiment of the present application provides a rear anti-collision beam for an automobile, the rear anti-collision beam for an automobile comprising:

[0007] Beam body;

[0008] Two energy absorbing devices are respectively installed at two ends of the beam body in the first direction, the energy absorbing device is a hollow structure and extends along the second direction, the energy absorbing device is provided with an energy absorbing induction groove extending along the first direction, and the energy absorbing induction groove is a depression formed by the energy absorbing device bulging inwardly and bending;

[0009] The first direction intersects with the second direction.

[0010] In an optional embodiment, the crossbeam body includes a main body and two side wall portions, the two side wall portions are respectively located on both sides of the main body in a third direction, and the two side wall portions are convex relative to the main body along a second direction, wherein the third direction is respectively perpendicular to the first direction and the second direction;

[0011] The main body is provided with a recessed area, the recessed area is a recess formed by the main body being convexly bent along the convex direction of the side wall, and the recessed area extends along the first direction.

[0012] In an optional embodiment, an end of each of the side wall portions facing away from the main body portion is provided with an outwardly folded edge.

[0013] In an optional embodiment, the crossbeam body further includes a wire harness limiting plate, the wire harness limiting plate is connected to the outer flange and is located in the same plane as the outer flange, and the wire harness limiting plate is provided with an accommodating through hole for accommodating the wire harness.

[0014] In an optional embodiment, the energy absorbing device comprises an upper shell portion and a lower shell portion butted together along a third direction, and both the upper shell portion and the lower shell portion are provided with the energy absorbing inducing groove;

[0015] There are a plurality of energy absorption inducing grooves, and at least one pair of the energy absorption inducing grooves are arranged relatively along the third direction, wherein the third direction is perpendicular to the first direction and the second direction respectively.

[0016] In an optional embodiment, the upper shell portion and the lower shell portion are respectively provided with a plurality of weakened energy absorption holes, the energy absorption inducing groove and the plurality of weakened energy absorption holes are spaced apart along the second direction, and at least two of the weakened energy absorption holes are spaced apart along the first direction.

[0017] In an optional embodiment, the cross-sectional shape of the energy absorbing device is a rounded rectangle, and at least two of the weakened energy absorbing holes spaced apart along the second direction are located in a rounded chamfered area of ​​the energy absorbing device.

[0018] In an optional embodiment, the rear anti-collision beam of the automobile also includes a trailer connection assembly, which is installed in the energy absorption device. The trailer connection assembly includes a connecting pipe with a hollow structure, and a trailer guide hole is opened on the beam body. The connecting pipe extends along the second direction and is connected to the trailer guide hole.

[0019] In an optional embodiment, the trailer connection assembly further includes a “J”-shaped reinforcement member, the reinforcement member is provided with two mounting holes spaced apart along the second direction, the connecting pipe passes through the two mounting holes and is fixedly connected to the reinforcement member.

[0020] In an optional embodiment, the automobile rear anti-collision beam further includes a mounting plate and a mounting bracket, the mounting plate is connected to an end of the energy absorbing device facing away from the beam body, and the mounting bracket is connected to the beam body.

[0021] The beneficial effects of the technical solution provided in the embodiment of the present application include at least: by arranging energy absorbing devices at both ends of the beam body in the first direction, and the energy absorbing device has an energy absorbing inducing groove extending along the first direction, when the rear of the car is hit along the second direction, the bent and recessed energy absorbing inducing groove can guide the energy absorbing device to fold and deform along the second direction, thereby effectively absorbing the collision energy from the rear vehicle, reducing the deformation of other parts of the car body and the degree of damage to the car during the collision process, and the car can be repaired by simply replacing the rear anti-collision beam of the car, which greatly saves maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A schematic diagram of the structure of a rear anti-collision beam for an automobile provided in an embodiment of the present application;

[0024] Figure 2 A partial exploded schematic diagram of a rear anti-collision beam of an automobile provided in an embodiment of the present application;

[0025] Figure 3 A schematic diagram of the structure of the beam body provided in an embodiment of the present application;

[0026] Figure 4 A schematic cross-sectional view of a beam body provided in an embodiment of the present application;

[0027] Figure 5 A schematic structural diagram of the upper shell of the energy absorbing device provided in an embodiment of the present application;

[0028] Figure 6 A schematic structural diagram of the lower shell portion of the energy absorbing device provided in an embodiment of the present application;

[0029] Figure 7 A schematic diagram of the structure of a connecting pipe of a trailer connecting assembly provided in an embodiment of the present application;

[0030] Figure 8 A schematic structural diagram of a reinforcement member of a trailer connection assembly provided in an embodiment of the present application;

[0031] Fig. 9 A schematic diagram of the structure of the mounting bracket provided in an embodiment of the present application.

[0032] The reference numerals in the figures represent respectively:

[0033] 1- beam body; 11- main body; 111- recessed area; 12- side wall; 121- outer flange; 13- harness limit plate; 131- accommodating through hole; 14- trailer guide hole; 15- positioning hole; 16- installation guide hole;

[0034] 2-energy absorption device; 21-energy absorption induction groove; 22-upper shell; 221-welding hole; 222-round chamfer; 23-lower shell; 24-weakened energy absorption hole;

[0035] 3-trailer connection assembly; 31-connecting pipe; 311-internal thread; 32-reinforcement member; 321-mounting hole; 322-flange;

[0036] 4-Mounting plate;

[0037] 5-mounting bracket; 51-long round hole; 52-flanged structure; 53-connecting through hole.

[0038] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] The directional nouns involved in the embodiments of the present application, such as "upper", "lower", "side", etc., are generally based on the relative relationship of the directions shown in the figures, and these directional nouns are used only to more clearly describe the relationship between structures, and are not intended to describe absolute directions. When the product is placed in different postures, the direction may change, for example, "upper" and "lower" may be interchangeable.

[0041] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by those of ordinary skill in the art.

[0042] The rear anti-collision beam of a car is located at the rear end of the car body and is used to cushion and absorb energy when the car collides from the rear.

[0043] At present, the rear anti-collision beam structure of automobiles on the market is relatively simple, and only uses a metal beam and a mounting bracket structure to be fixed at the rear end of the vehicle body, and the collision energy absorption effect is poor. In the low-speed collision condition of automobiles (speed less than 15km / h), the rear vehicle rear-ends the front vehicle, and the low-speed collision of the rear vehicle on the front vehicle will cause large-scale deformation of the rear floor, rear panel and other areas of the body frame of the front vehicle, and the damage to the rear-end vehicle is relatively large, causing users to suffer relatively heavy repair cost losses.

[0044] In response to the above technical problems, the present application provides a rear anti-collision beam for an automobile, which can effectively absorb collision energy and reduce the degree of damage to the automobile when it is hit by a collision.

[0045] In order to make the technical solutions and advantages of the present application more clear, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0046] like Figure 1 As shown, the automobile rear anti-collision beam provided by the present application includes a beam body 1 and two energy absorbing devices 2.

[0047] The two energy absorbing devices 2 are respectively installed at the two ends of the beam body 1 in the first direction X. The energy absorbing device 2 is a hollow structure and extends along the second direction Y. The energy absorbing device 2 is provided with an energy absorbing induction groove 21 extending along the first direction X. The energy absorbing induction groove 21 is a depression formed by the energy absorbing device 2 protruding inwardly and bending. The first direction X intersects with the second direction Y, for example, the first direction X is inclined to the second direction Y, or the first direction X is perpendicular to the second direction Y.

[0048] Optionally, when the beam body 1 extends in a straight line, the length direction of the beam body 1 is the first direction X; or, when the beam body 1 is bent, the line connecting the two ends of the beam body 1 extends along the first direction X.

[0049] The crossbeam body 1 is provided with a plurality of positioning holes 15 and installation guide holes 16 for realizing modular assembly of the rear anti-collision crossbeam of the automobile.

[0050] The energy absorbing device 2 is hollow inside, and one of the open ends of the energy absorbing device 2 is fixedly connected to the cross beam body 1. The energy absorbing device 2 is located on a side closer to the vehicle interior relative to the cross beam body 1. Exemplarily, the energy absorbing device 2 is welded to the cross beam body 1.

[0051] The energy absorption induction groove 21 is formed by the side wall of the energy absorption device 2 convexly bending toward the inner cavity. The energy absorption induction groove 21 is recessed inwardly relative to the side wall of the energy absorption device 2 , and the energy absorption induction groove 21 extends along the first direction X.

[0052] When the rear anti-collision beam of the automobile is hit in the second direction Y, the energy absorption inducing groove 21 can serve as the crease line of the energy absorption device 2, guiding the energy absorption device 2 to fold and deform in the second direction Y, thereby absorbing a large amount of collision energy so that only the rear anti-collision beam and the rear guard skin of the automobile are damaged after the automobile is hit by the rear vehicle. The user only needs to replace the rear anti-collision beam of the automobile to complete the car body repair, without replacing the rear surround, rear floor and other body frame assemblies, which greatly saves the user's maintenance cost.

[0053] Optionally, there may be one or more energy absorption induction grooves 21. Optionally, the energy absorption induction grooves 21 may be located at an end region in the extending direction of the energy absorption device 2, or may be located at a middle region in the extending direction of the energy absorption device 2.

[0054] The automobile rear anti-collision beam provided in the embodiment of the present application is provided with energy absorbing devices 2 at both ends of the beam body 1 in the first direction X, and the energy absorbing device 2 has an energy absorbing inducing groove 21 extending along the first direction X. When the rear of the automobile is hit along the second direction Y, the bent and recessed energy absorbing inducing groove 21 can guide the energy absorbing device 2 to generate folding deformation along the second direction Y, thereby effectively absorbing the collision energy from the rear vehicle, reducing the deformation of other parts of the vehicle body and the degree of damage to the automobile during the automobile collision. The automobile can be repaired by simply replacing the rear anti-collision beam, which greatly saves the maintenance cost.

[0055] In a further embodiment, the beam body 1 includes a main body portion 11 and two side wall portions 12, the two side wall portions 12 are respectively located on both sides of the main body portion 11 in a third direction Z, and the two side wall portions 12 protrude outward relative to the main body portion 11 along a second direction Y, wherein the third direction Z is respectively perpendicular to the first direction X and the second direction Y.

[0056] The main body 11 is provided with a recessed area 111 . The recessed area 111 is a recess formed by the main body 11 being bent along the protruding direction of the side wall 12 . The recessed area 111 extends along the first direction X.

[0057] The main body 11 and the side wall 12 are both roughly plate-shaped. Figure 4 is a schematic diagram of a cross section of the beam body 1, wherein the cross section of the beam body 1 is a cross section obtained by cutting with a plane perpendicular to the first direction X, such as Figure 4 As shown, the two side wall portions 12 are spaced apart along the third direction Z, the cross beam body 1 has an opening on one side in the second direction Y, the opening faces the interior of the vehicle, and the other side of the cross beam body 1 in the second direction Y faces the rear of the vehicle and is opposite to the side where the collision occurs.

[0058] like Figure 4As shown, the recessed area 111 is located in the middle area in the height direction of the main body 11. The recessed area 111 is formed by the bending and depression of the main body 11, and is bent and convex along the direction in which the side wall 12 convexes relative to the main body 11. The recessed area 111 is concave toward the interior of the vehicle relative to other areas of the main body 11, so that the cross-section of the beam body 1 is roughly "M"-shaped.

[0059] Compared with the straight top surface structure of the beam, by setting the recessed area 111 in the main body 11, the stress can be better dispersed, the bending can be reduced, and the bending resistance of the beam body 1 can be effectively improved, so that the rear anti-collision beam of the automobile can maintain the structural integrity and rigidity when a collision occurs, thereby preventing the rear anti-collision beam of the automobile from being seriously deformed and damaged.

[0060] Among them, the depth, width and length of the recessed area 111 can be set according to actual needs, and this application does not make any specific limitations.

[0061] In a further embodiment, each side wall portion 12 is provided with an outwardly folded outer edge 121 at one end away from the main body portion 11 .

[0062] like Figure 4 As shown, the outer flange 121 of each side wall portion 12 protrudes outward in a direction away from the other side wall portion 12 , and the two outer flanges 121 extend in opposite directions.

[0063] By providing the outer flange 121 and combining it with the design of the recessed area 111, the bending resistance of the beam body 1 is greatly improved. In the applicant's actual vehicle test, the bending resistance of the beam body 1 with the outer flange 121 and the recessed area 111 is improved by about 50% compared with the beam body 1 without the outer flange 121 and the recessed area 111.

[0064] The crossbeam body 1 further includes a wire harness limiting plate 13 , which is connected to the outer flange 121 and is located in the same plane as the outer flange 121 . The wire harness limiting plate 13 is provided with an accommodating through hole 131 for accommodating the wire harness.

[0065] The number of the harness limiting plates 13 is one or more, which can be set according to actual needs. Figure 3 As shown, there are seven wire harness limiting plates 13 , and the seven wire harness limiting plates 13 are arranged at intervals along the extension direction of the crossbeam body 1 .

[0066] The harness limiting plate 13 is plate-shaped, and the accommodating through hole 131 penetrates the harness limiting plate 13 along the thickness direction of the harness limiting plate 13 . The accommodating through hole 131 is used to allow the harness of the car to pass through, so that the harness in the car is more neat and organized.

[0067] Since the wire harness limiting plate 13 and the outer flange 121 are located in the same plane, the wire harness limiting plate 13 will not affect the anti-collision bending deformation capability of the cross beam body 1 .

[0068] In this embodiment, the beam body 1 integrates the limiting and fixing structure of the wire harness, so that the rear anti-collision beam of the automobile can realize multiple functions, reduce the cost of designing and developing a mold solely for the limiting and fixing structure of the wire harness, and is beneficial to controlling the production cost of the automobile.

[0069] In one embodiment, the energy absorption device 2 includes an upper shell portion 22 and a lower shell portion 23 connected along a third direction Z, and both the upper shell portion 22 and the lower shell portion 23 are provided with energy absorption inducing grooves 21. There are multiple energy absorption inducing grooves 21, and at least one pair of energy absorption inducing grooves 21 are relatively arranged along the third direction Z, wherein the third direction Z is perpendicular to the first direction X and the second direction Y, respectively.

[0070] like Figure 2 As shown, the upper shell 22 is located above the lower shell 23, and both the upper shell 22 and the lower shell 23 are roughly "U"-shaped. The openings of the upper shell 22 and the lower shell 23 are opposite and the two are fixedly connected by buckling up and down to form an internal hollow energy absorption device 2.

[0071] Exemplarily, the upper shell portion 22 and the lower shell portion 23 are connected by welding.

[0072] The positions of at least one pair of energy absorption induction grooves 21 correspond to each other. Through this arrangement, when the rear anti-collision beam of the automobile is hit, the energy absorption device 2 uses the upper and lower corresponding energy absorption induction grooves 21 as creases to generate regular folds along the collision direction, thereby better absorbing the collision energy.

[0073] In a further embodiment, the upper shell portion 22 and the lower shell portion 23 are respectively provided with a plurality of weakened energy absorbing holes 24, the energy absorption inducing groove 21 and the plurality of weakened energy absorbing holes 24 are arranged at intervals along the second direction Y, and at least two weakened energy absorbing holes 24 are arranged at intervals along the first direction X.

[0074] like Figure 5 As shown, two of the weakened energy absorbing holes 24 in the upper shell portion 22 are arranged opposite to each other along the first direction X; Figure 6 As shown, two of the weakened energy absorbing holes 24 of the lower shell portion 23 are arranged opposite to each other along the first direction X.

[0075] The weakened energy absorbing hole 24 is a through hole that passes through the upper shell portion 22 or the lower shell portion 23. By arranging at least two weakened energy absorbing holes 24 spaced apart along the first direction X, the two weakened energy absorbing holes 24 form a crease line extending along the first direction X. Since the energy absorption inducing groove 21 and the plurality of weakened energy absorbing holes 24 are spaced apart along the second direction Y, the energy absorbing device 2 can be guided to fold layer by layer along the second direction Y, thereby better absorbing the collision energy.

[0076] Optionally, the multiple weakened energy absorption holes 24 of the upper shell portion 22 and the multiple weakened energy absorption holes 24 of the lower shell portion 23 are arranged relative to each other along the third direction Z, that is, the positions of the multiple weakened energy absorption holes 24 of the upper shell portion 22 and the multiple weakened energy absorption holes 24 of the lower shell portion 23 correspond to each other, which is conducive to guiding the upper shell portion 22 and the lower shell portion 23 to produce corresponding upper and lower creases.

[0077] In a further embodiment, the cross-section of the energy absorbing device 2 is a rounded rectangle, and at least two weakened energy absorbing holes 24 spaced apart along the second direction Y are located in the rounded chamfer 222 region of the energy absorbing device 2. It can be understood that the cross-section of the energy absorbing device 2 is a cross-section obtained by cutting with a plane perpendicular to the extension direction of the energy absorbing device 2.

[0078] The upper shell 22 and the lower shell 23 are connected to form a "mouth" shaped energy absorbing device 2. Figure 5 As shown, two of the weakened energy absorbing holes 24 in the upper shell portion 22 are located on the rounded chamfer 222 of the upper shell portion 22; Figure 6 As shown, two of the weakened energy absorbing holes 24 in the lower shell portion 23 are located on the rounded chamfers 222 of the lower shell portion 23 .

[0079] By rounding the edges of the energy absorbing device 2, the cross-sectional shape of the energy absorbing device 2 is made into a rounded rectangle, which is beneficial to reducing stress concentration and improving the strength of the energy absorbing device 2; by arranging at least two weakened energy absorbing holes 24 in the rounded chamfer 222 area of ​​the energy absorbing device 2, the energy absorbing device 2 can be better guided to fold along the folding line formed by the weakened energy absorbing holes 24, thereby improving the collision energy absorption effect of the energy absorbing device 2.

[0080] In one embodiment, the rear anti-collision beam of the automobile also includes a trailer connection assembly 3, which is installed in the energy absorption device 2. The trailer connection assembly 3 includes a connecting pipe 31 with a hollow structure. A trailer guide hole 14 is opened on the beam body 1. The connecting pipe 31 extends along the second direction Y and is connected to the trailer guide hole 14.

[0081] When a car breaks down in a ditch, snow or other special conditions, it needs to be towed by the car's traction device. In addition, according to the light vehicle traction device standard: the structure and shape of the motor vehicle traction device is determined by the vehicle manufacturer, and the light vehicle traction device should be able to withstand a static traction load of at least half of the maximum allowable gross weight of the vehicle. At the same time, after the test, the traction device and its fixings should not fail, break or have deformation that affects normal use, and other components installed near the traction device (such as the vehicle's lights, signal devices, brake system, steering system, etc.) should not be damaged in a way that affects their normal operation.

[0082] The traction devices on cars currently on the market are arranged in various forms due to the influence of the tail shape, and there are generally problems with unreasonable layout positions and structures, which directly lead to insufficient strength of the traction devices and cannot meet the above requirements, thus having a relatively large impact on the performance of the entire vehicle.

[0083] In the embodiment of the present application, by installing the trailer connection assembly 3 in the energy absorbing device 2, the trailer hook passes through the trailer guide hole 14 and is connected to the connection pipe 31, and the connection pipe 31 transmits the traction force to the cross beam body 1 through the energy absorbing device 2. Since the cross beam body 1 is connected to the rear longitudinal beam of the vehicle body frame, and the rear longitudinal beam is the most important frame structure at the rear of the vehicle body frame, the traction force is transmitted to the rear longitudinal beam, the structural layout is reasonable, and the trailer force transmission path is clear, which can greatly improve the reliability of the car when being towed. In addition, by setting the trailer connection assembly 3, the rear anti-collision cross beam of the car is integrated with the traction device, so that the rear anti-collision cross beam of the car can realize multiple functions, reducing the mold cost and production cycle of the parts of the traction device that are developed separately, which is conducive to improving economic benefits.

[0084] Alternatively, if Figure 7 As shown, an internal thread 311 is provided in the connecting pipe 31, and the internal thread 311 is used for threaded connection with the trailer hook.

[0085] In a further embodiment, the trailer connection assembly 3 further includes a “J”-shaped reinforcement member 32 , the reinforcement member 32 has two mounting holes 321 spaced apart along the second direction Y, and the connecting pipe 31 passes through the two mounting holes 321 and is fixedly connected to the reinforcement member 32 .

[0086] Specifically, the connecting pipe 31 passes through the two mounting holes 321 and is connected to the reinforcing member 32 by welding, and both ends of the reinforcing member 32 in the height direction are respectively connected to the upper shell portion 22 and the lower shell portion 23 by welding.

[0087] like Figure 8 As shown, a flange 322 is further provided at the bottom of the reinforcement 32 , and the flange 322 is used to increase the contact area between the reinforcement 32 and the lower shell portion 23 , thereby increasing the connection strength between the reinforcement 32 and the lower shell portion 23 .

[0088] The upper shell portion 22 and the lower shell portion 23 are both provided with an oval-shaped welding hole 221 , and the reinforcement member 32 is welded to the upper shell portion 22 and the lower shell portion 23 through the welding hole 221 .

[0089] By providing the reinforcement 32, the strength of the trailer connection assembly 3 is improved, the connecting pipe 31 transmits the traction force to the reinforcement 32, and the reinforcement 32 transmits the traction force to the crossbeam body 1 through the energy absorbing device 2, and finally to the rear longitudinal beam of the vehicle body frame, thereby further improving the reliability of the vehicle when being towed.

[0090] In one embodiment, the rear anti-collision beam of the automobile further includes a mounting plate 4 and a mounting bracket 5 . The mounting plate 4 is connected to an end of the energy absorbing device 2 facing away from the beam body 1 , and the mounting bracket 5 is connected to the beam body 1 .

[0091] like Figure 1 As shown, there are two mounting plates 4, which are spaced apart along the first direction X. The mounting plates 4 are located at one end of the energy absorbing device 2 away from the crossbeam body 1, each mounting plate 4 is welded to an energy absorbing device 2, and the mounting plates 4 are provided with through holes for communicating with the inner cavity of the energy absorbing device 2.

[0092] The mounting plate 4 is used to realize the connection between the rear anti-collision beam of the automobile and the rear longitudinal beam of the vehicle body. Exemplarily, the mounting plate 4 and the rear longitudinal beam of the vehicle body are connected by threaded fasteners.

[0093] The mounting bracket 5 is welded to one of the side wall portions 12, and there may be one or more mounting brackets 5. Figure 1 As shown, there are four mounting brackets 5 , and the four mounting brackets 5 are distributed at intervals along the extension direction of the beam body 1 .

[0094] The mounting bracket 5 is provided with a connecting through hole 53 , and the connecting through hole 53 is used to realize the connection between the mounting bracket 5 and the rear bumper decorative cover.

[0095] like Fig. 9 As shown, the mounting bracket 5 is in a "Z" shape, and is provided with an oblong hole 51 for welding, and the number of the oblong hole 51 is one or more.

[0096] Flanged structures 52 are also provided on both sides of the mounting bracket 5 in the width direction, and the flanging structures 52 are used to strengthen the structure of the mounting bracket 5 .

[0097] Compared with the automobile rear anti-collision beam in the prior art, the automobile rear anti-collision beam provided by the embodiment of the present application has the following technical effects:

[0098] (1) The rear anti-collision beam provided by the embodiment of the present application not only improves the anti-deformation and anti-intrusion capabilities of the rear anti-collision beam after a high-speed collision, but can also effectively absorb collision energy during a low-speed collision, greatly reducing the degree of damage to the car when it is rear-ended, and greatly saving the maintenance cost for the user;

[0099] (2) The rear anti-collision beam of the automobile provided in the embodiment of the present application integrates the trailer connection assembly 3 as a towing device, has a reasonable structural arrangement, and a clear trailer force transmission path, which can greatly improve the reliability of the automobile when being towed;

[0100] (3) The automobile rear anti-collision beam provided in the embodiment of the present application integrates the trailer connection assembly 3 and the harness limiting plate 13, so that the automobile rear anti-collision beam can realize multiple functions as one assembly part, greatly reducing the mold cost and cycle of separately developed parts such as the towing device and the harness limiting fixing structure, thereby improving economic benefits;

[0101] (4) The automobile rear anti-collision beam structural frame provided in the embodiment of the present application can be developed as a platform solution for universal application. Automobiles of different shapes can meet the universal requirements of different models by only changing the position of the energy absorption device 2 and the shape of the beam body 1, thereby minimizing the development cost of the automobile.

[0102] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0103] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the present application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only.

[0104] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A rear anti-collision beam for an automobile, characterized in that: The automobile rear anti-collision beam comprises: A beam body (1); Two energy absorbing devices (2) are respectively installed at two ends of the crossbeam body (1) in a first direction (X); the energy absorbing device (2) is a hollow structure and extends along a second direction (Y); the energy absorbing device (2) is provided with an energy absorbing induction groove (21) extending along the first direction (X); the energy absorbing induction groove (21) is a depression formed by the energy absorbing device (2) protruding inwardly and bending; The first direction (X) intersects with the second direction (Y).

2. The automobile rear anti-collision beam according to claim 1, characterized in that: The crossbeam body (1) comprises a main body (11) and two side wall parts (12), wherein the two side wall parts (12) are respectively located on both sides of the main body (11) in a third direction (Z), and the two side wall parts (12) are convex relative to the main body (11) along a second direction (Y), wherein the third direction (Z) is respectively perpendicular to the first direction (X) and the second direction (Y); The main body (11) is provided with a recessed area (111), the recessed area (111) being a recess formed by the main body (11) being convexly bent along the convex direction of the side wall (12), and the recessed area (111) extending along the first direction (X).

3. The automobile rear anti-collision beam according to claim 2, characterized in that: An end of each of the side wall portions (12) facing away from the main body portion (11) is provided with an outwardly folded outer edge (121).

4. The automobile rear anti-collision beam according to claim 3, characterized in that: The crossbeam body (1) further comprises a wire harness limiting plate (13), the wire harness limiting plate (13) being connected to the outer flange (121) and being located in the same plane as the outer flange (121), and the wire harness limiting plate (13) being provided with an accommodating through hole (131) for accommodating a wire harness.

5. The automobile rear anti-collision beam according to claim 1, characterized in that: The energy absorption device (2) comprises an upper shell portion (22) and a lower shell portion (23) butted against each other along a third direction (Z), and both the upper shell portion (22) and the lower shell portion (23) are provided with the energy absorption induction groove (21); There are a plurality of energy absorption inducing grooves (21), and at least one pair of the energy absorption inducing grooves (21) are arranged relatively along the third direction (Z), wherein the third direction (Z) is respectively perpendicular to the first direction (X) and the second direction (Y).

6. The automobile rear anti-collision beam according to claim 5, characterized in that: The upper shell portion (22) and the lower shell portion (23) are respectively provided with a plurality of weakened energy absorbing holes (24); the energy absorption inducing groove (21) and the plurality of weakened energy absorbing holes (24) are arranged at intervals along the second direction (Y); and at least two of the weakened energy absorbing holes (24) are arranged at intervals along the first direction (X).

7. The automobile rear anti-collision beam according to claim 6, characterized in that: The cross-sectional shape of the energy absorbing device (2) is a rounded rectangle, and at least two of the weakened energy absorbing holes (24) spaced apart along the second direction (Y) are located in the rounded chamfer (222) region of the energy absorbing device (2).

8. The automobile rear anti-collision beam according to claim 1, characterized in that: The automobile rear anti-collision cross beam further comprises a trailer connection assembly (3), the trailer connection assembly (3) being installed in the energy absorbing device (2), the trailer connection assembly (3) comprising a connection pipe (31) of a hollow structure, a trailer guide hole (14) being provided on the cross beam body (1), the connection pipe (31) extending along the second direction (Y) and being in communication with the trailer guide hole (14).

9. The automobile rear anti-collision beam according to claim 8, characterized in that: The trailer connection assembly (3) further comprises a "J"-shaped reinforcement member (32), the reinforcement member (32) being provided with two mounting holes (321) spaced apart along the second direction (Y), the connection pipe (31) passing through the two mounting holes (321) and being fixedly connected to the reinforcement member (32).

10. The automobile rear anti-collision beam according to claim 1, characterized in that: The automobile rear anti-collision beam further comprises a mounting plate (4) and a mounting bracket (5); the mounting plate (4) is connected to an end of the energy absorbing device (2) that is away from the beam body (1); and the mounting bracket (5) is connected to the beam body (1).

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