CN110606038B - Connecting structure of automobile anti-collision beam and energy absorption box - Google Patents

Abstract

The invention provides a connecting structure of an automobile anti-collision beam and an energy absorption box, and belongs to the technical field of automobiles. The problem of how to make the connection structure assemble simple and improve the safety performance of whole car collision is solved. This connection structure of car anticollision roof beam and energy-absorbing box includes the connecting piece, and the connecting piece adopts the steel sheet to make and is cyclic annular, and the connecting piece parcel just links firmly through the fastener in the periphery of energy-absorbing box, and the one end that the connecting piece is close to the anticollision roof beam has connecting portion, and connecting portion support with the upper and lower side of anticollision roof beam and lean on and link firmly through the bolt, and the bolt is along vertical crashproof roof beam that runs through. This connection structure assembly is simple, and structural design is reasonable, and joint strength is high, is difficult to the fracture of taking place when the high-speed center post collides to but the crash box link crushing performance influence is less, has showing the improvement to the security performance of whole car collision.

Description

A connection structure between an automobile anti-collision beam and an energy-absorbing box

technical field

The invention belongs to the technical field of automobiles and relates to a connection structure between an automobile anti-collision beam and an energy-absorbing box.

Background technique

With the popularization of automobiles and the maturity of automobile technology at the present stage, people pay more and more attention to the safety performance of automobiles, and the requirements of national regulations on the safety performance of automobiles are becoming more and more strict. Among collision accidents, frontal high-speed collision accidents occur frequently, and the fatality rate is very high. In order to better protect the safety of the occupants in the car, major automobile companies have increased the development of automobile safety performance, optimized the body structure, increased force transmission channels and safety auxiliary equipment, etc., so as to improve vehicle safety performance.

Among them, the anti-collision beam assembly is a device that absorbs the energy of the collision when the car is hit. In low-speed collision accidents, the anti-collision beam assembly can completely absorb energy, protect important and expensive parts from damage, and reduce property losses; in high-speed collisions, the anti-collision beam assembly can absorb and disperse energy to the greatest extent Reduced damage to the crew compartment.

In the prior art, for the sake of light weight, aluminum alloy materials are gradually used instead of steel to manufacture anti-collision beam assemblies. The anti-collision beam assembly generally includes the anti-collision beam and the energy-absorbing box. In the event of a collision, the connection between the anti-collision beam and the energy-absorbing box is easily broken, which will cause the collision force to fail to be transmitted to the The whole vehicle affects the safety performance of the whole vehicle collision. At present, in order to improve the connection strength between the anti-collision beam and the energy-absorbing box, the connection strength between the two is often increased by adding connectors, but this makes the structure of the anti-collision beam assembly more complicated and difficult to assemble.

Contents of the invention

The purpose of the present invention is to solve the above-mentioned problems in the existing technology, and propose a connection structure between an automobile anti-collision beam and an energy-absorbing box. safety performance.

The purpose of the present invention can be achieved through the following technical solutions: a connection structure between an automobile anti-collision beam and an energy-absorbing box, including a connecting piece, characterized in that the connecting piece is made of a steel plate and is ring-shaped, and the connecting piece The parts are wrapped on the outer periphery of the energy-absorbing box and fixed by fasteners. The connecting part has a connecting part near the end of the anti-collision beam, and the connecting part is against the upper and lower sides of the anti-collision beam and is fixed by bolts. The bolt vertically penetrates the anti-collision beam.

Different from the prior art, the connection structure between the anti-collision beam and the energy-absorbing box of the automobile is not only simple to assemble, but also not easy to break; the specific design principle is as follows: the connection structure only includes three parts: connectors, fasteners and bolts , and the connecting piece itself is ring-shaped and matches the design of the connecting part, which makes it very convenient to assemble the connecting piece with the crash box and the anti-collision beam; at the same time, because the connecting piece is wrapped on the outer periphery of the crash box, the crash box Located on the inner side of the anti-collision beam, when the inner side of the anti-collision beam bears the compressive load, it is borne by the steel connecting piece and the energy-absorbing box together; since the connecting piece is connected with the anti-collision beam through the connecting part, then when the energy-absorbing box and the anti-collision box When the outer side of the beam joint bears the tensile load, it is borne by the steel connecting plate; through the above design, the connecting piece is the main load-bearing part in the collision process, and the high strength of the steel connecting plate can ensure that the connecting structure does not break; and, Through the design of the bolt vertically penetrating the anti-collision beam, the bolt not only plays the role of connecting the anti-collision beam and the connector, but also can disperse the collision force to the inside of the anti-collision beam, so that the force is not concentrated on the anti-collision beam The top surface and the bottom surface, so as to further ensure that the connection between the steel connecting plate and the anti-collision beam is not broken; combined with the above-mentioned annular design of the connector, it has little impact on the crushing performance of the energy-absorbing box; thus ensuring that the anti-collision beam The impact force received is transmitted to the vehicle through the energy-absorbing box to ensure that the front-end structure is fully deformed, energy is absorbed, and the safety performance of the vehicle collision is improved.

In the above connection structure between the automobile anti-collision beam and the energy-absorbing box, the connecting piece includes a U-shaped upper connecting plate and a U-shaped lower connecting plate, and the upper connecting plate and the lower connecting plate are respectively sleeved on the absorbing On the energy box, the upper connecting plate and the lower connecting plate overlap each other and surround the periphery of the energy-absorbing box; the upper connecting plate, the lower connecting plate and the overlap of the two are connected to the energy-absorbing box by fasteners Fixed connection. Through the design of the above U-shaped upper connecting plate and lower connecting plate, and using the overlapping fit of the two, the connecting piece can be wrapped on the outside of the energy-absorbing box, so that the energy-absorbing box and the connecting piece can jointly withstand the inner side of the collision. The compression load improves the safety performance of the vehicle collision; moreover, the connector adopts a split design, which is conducive to improving the convenience of assembling the connector and the energy-absorbing box.

In the above connection structure between the anti-collision beam and the crash box of the automobile, the connection part includes an upper connection part located at one end of the upper connection plate close to the anti-collision beam and extending toward the anti-collision beam, and an upper connection part located at the end of the lower connection plate close to the anti-collision beam. One end of the anti-collision beam and the lower connection part extending to the anti-collision beam, the upper connection part abuts on the upper side of the anti-collision beam, the lower connection part abuts on the lower side of the anti-collision beam, and the bolt is connected by the upper Pass through the upper connection part, the anti-collision beam and the lower connection part successively to the bottom. Through the above design, the connection between the connecting piece and the anti-collision beam can be realized, and the function of the above-mentioned bolt can be combined to improve the safety performance of the collision of the whole vehicle.

In the above connection structure between the anti-collision beam and the crash box of the automobile, the end of the connecting piece away from the crash beam has an extension extending along the length direction of the crash box, and the extension is connected to the crash box through a fastener. Fixed connection. Through the above design of the extension part, the connection area between the connector and the crash box is increased, which can improve the connection strength of the connection structure, making the connection difficult to break, thereby improving the safety performance of the vehicle collision.

In the connection structure between the anti-collision beam and the crash box of the automobile mentioned above, the extension part has a raised part raised outwards. The bulge of the extension plate can reduce its impact on the crushability of the crash box, so that the crash box can be fully deformed and crushed in a collision, so as to better absorb the crash energy, thereby improving the safety performance of the vehicle collision .

In the above-mentioned connection structure between the anti-collision beam and the energy-absorbing box of the automobile, a sleeve is sheathed on the bolt, and the sleeve is passed through the anti-collision beam. Through the above sleeve design, the bolt itself is not easy to bend in the collision, so that the bolt can better transmit the collision force to the inside of the anti-collision beam, thereby improving the safety performance of the vehicle collision.

As a preference, in the connection structure between the automobile anti-collision beam and the crash box, there are two bolts, and the screw positions of the two bolts correspond to the positions of the left and right sides of the crash box respectively. Through the arrangement design of the above bolts, the collision force can be better transmitted and dispersed, and the force transmitted to the energy-absorbing box can be directly facing the energy-absorbing box, so that the energy-absorbing box can play a better role, thereby improving the overall car crash safety performance.

In the connection structure between the automobile anti-collision beam and the energy-absorbing box, the anti-collision beam has reinforcement ribs arranged in the horizontal direction, and the bolts pass through the reinforcement ribs and are perpendicular to the reinforcement ribs. Through the cooperation of the above bolts and reinforcement bars, the collision force on the anti-collision beam can be transmitted to the reinforcement bars through the bolts, so that the force is not concentrated on the upper and lower sides of the anti-collision beam, so that the anti-collision beam and the connection The joints where the parts are connected by bolts are not easy to break, thereby improving the safety performance of the vehicle collision.

In the above connection structure between the anti-collision beam and the crash box of the automobile, the fastener is a blind rivet. Blind rivets have a simple process and high connection strength; as an alternative, the above fasteners can also use screws.

Compared with the prior art, the connection structure of the automobile anti-collision beam and the energy-absorbing box has the following advantages: the connection structure is simple to assemble, the structure design is reasonable, the connection strength is high, it is not easy to break when the high-speed center column collides, and the absorption The impact on the crushability of the connection end of the energy box is small, and the safety performance of the collision of the whole vehicle is significantly improved.

Description of drawings

Fig. 1 is a schematic diagram of the connection structure of the automobile anti-collision beam and the energy-absorbing box.

Fig. 2 is a schematic diagram of the structure of the connecting piece and the bolt.

In the figure, 1, connecting piece; 11, upper connecting plate; 12, lower connecting plate; 1a, connecting part; 1a1, upper connecting part; 1a2, lower connecting part; 1b, extending part; 1b1, raised part; 3, bolt ; 4. Sleeve; a. Energy-absorbing box; b. Anti-collision beam; b1. Reinforcement bar.

Detailed ways

The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

Specifically, as shown in FIG. 1 , the automobile includes an anti-collision beam b and an energy-absorbing box a made of aluminum alloy materials. The connection structure includes a ring-shaped connecting piece 1 made of steel plate, which is wrapped on the outer periphery of the energy-absorbing box a and fixed by fasteners. The end of the connecting piece 1 near the anti-collision beam b has a connection part 1a, the connecting part 1a abuts against the upper and lower sides of the anti-collision beam b and is fixedly connected by bolts 3 . There are two bolts 3, which vertically penetrate the anti-collision beam b, and the positions of the screw rods of the two bolts 3 correspond to the positions of the left and right sides of the energy-absorbing box a respectively. At the same time, in this embodiment, the anti-collision beam b has reinforcement bars b1 arranged in the horizontal direction, the bolts 3 are covered with sleeves 4, and the sleeves 4 pass through the reinforcement bars b1 and are perpendicular to the reinforcement bars b1 .

More specifically, as shown in FIG. 2 , the connecting piece 1 includes a U-shaped upper connecting plate 11 and a U-shaped lower connecting plate 12, the upper connecting plate 11 and the lower connecting plate 12 are respectively set on the crash box a, The upper connecting plate 11 and the lower connecting plate 12 overlap each other and surround the periphery of the energy-absorbing box a; the upper connecting plate 11, the lower connecting plate 12 and the overlap between them are all fixedly connected with the energy-absorbing box a by fasteners . The connecting portion 1a includes an upper connecting portion 1a1 located at one end of the upper connecting plate 11 close to the anti-collision beam b and extending toward the anti-collision beam b, and a lower connecting portion 1a1 located at one end of the lower connecting plate 12 close to the anti-collision beam b and extending toward the anti-collision beam b. The connecting part 1a2, the upper connecting part 1a1 abuts against the upper side of the anti-collision beam b, the lower connecting part 1a2 abuts against the lower side of the anti-collision beam b, and the bolts 3 pass through the upper connecting part 1a1, The anti-collision beam b and the lower connection part 1a2. The end of the connecting piece 1 away from the anti-collision beam b has an extension part 1b extending along the length direction of the crash box a, and the extension part 1b is fixedly connected to the crash box a through fasteners. The extension portion 1b has a protruding portion 1b1 protruding outward. In this embodiment, the above-mentioned fasteners are blind rivets.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the present invention or go beyond the definition of the appended claims range.

Although the connection piece 1, the upper connection plate 11, the lower connection plate 12, the connection part 1a, the upper connection part 1a1, the lower connection part 1a2, the extension part 1b, the raised part 1b1, the bolt 3, the sleeve 4, Energy-absorbing box a, anti-collision beam b, stiffener b 1 and other terms, but the possibility of using other terms is not excluded. These terms are used only for the purpose of describing and explaining the essence of the present invention more conveniently; interpreting them as any kind of additional limitation is against the spirit of the present invention.

Claims (8)

1. The utility model provides a connection structure of car anticollision roof beam and energy-absorbing box, includes connecting piece (1), its characterized in that, connecting piece (1) adopt the steel sheet to make and be cyclic annular, connecting piece (1) parcel just links firmly through the fastener on the periphery of energy-absorbing box (a), the one end that connecting piece (1) is close to anticollision roof beam (b) has connecting portion (1 a), connecting portion (1 a) and the upper and lower side of anticollision roof beam (b) support to lean on and link firmly through bolt (3), bolt (3) are along vertical crashproof roof beam (b) that runs through, have in anticollision roof beam (b) reinforcing plate muscle (b 1) that arrange along the horizontal direction, and bolt (3) are passed reinforcing plate muscle (b 1) and are perpendicular with reinforcing plate muscle (b 1).

2. The connecting structure of an automobile anti-collision beam and an energy absorption box according to claim 1, characterized in that the connecting piece (1) comprises an upper connecting plate (11) in a U shape and a lower connecting plate (12) in a U shape, the upper connecting plate (11) and the lower connecting plate (12) are respectively sleeved on the energy absorption box (a), and the upper connecting plate (11) and the lower connecting plate (12) are mutually overlapped and surround the periphery of the energy absorption box (a); the upper connecting plate (11), the lower connecting plate (12) and the overlapping part of the upper connecting plate and the lower connecting plate are fixedly connected with the energy absorption box (a) through fasteners.

3. The connecting structure of an anti-collision beam and an energy absorption box of an automobile according to claim 2, wherein the connecting portion (1 a) comprises an upper connecting portion (1 a 1) located at one end of the upper connecting plate (11) close to the anti-collision beam (b) and extending towards the anti-collision beam (b) and a lower connecting portion (1 a 2) located at one end of the lower connecting plate (12) close to the anti-collision beam (b) and extending towards the anti-collision beam (b), the upper connecting portion (1 a 1) abuts against the upper side surface of the anti-collision beam (b), the lower connecting portion (1 a 2) abuts against the lower side surface of the anti-collision beam (b), and the bolt (3) sequentially penetrates through the upper connecting portion (1 a 1), the anti-collision beam (b) and the lower connecting portion (1 a 2) from top to bottom.

4. The connecting structure of an automobile impact beam and an energy absorption box according to claim 1, 2 or 3, characterized in that one end of the connecting piece (1) far away from the impact beam (b) is provided with an extension part (1 b) extending along the length direction of the energy absorption box (a), and the extension part (1 b) is fixedly connected with the energy absorption box (a) through a fastener.

5. The connecting structure of an impact beam and a crash box according to claim 4, wherein said extension portion (1 b) has an outwardly bulging portion (1 b 1).

6. The connecting structure of an automobile anti-collision beam and an energy absorption box according to claim 1, 2 or 3, characterized in that a sleeve (4) is sleeved on the bolt (3), and the sleeve (4) is arranged in the anti-collision beam (b) in a penetrating manner.

7. The connecting structure of an automobile anti-collision beam and an energy absorption box according to claim 1, 2 or 3, characterized in that the number of the bolts (3) is two, and the screw positions of the two bolts (3) correspond to the positions of the left side edge and the right side edge of the energy absorption box (a), respectively.

8. The connecting structure of an automobile impact beam and an energy absorption box according to claim 1, 2 or 3, wherein the fastener is a blind rivet.

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