CN110371062A - A kind of Efficient automobile crash energy absorption equipment - Google Patents

Abstract

The invention provides a high-efficiency buffer energy-absorbing device for automobiles, which includes a first connecting plate, a second connecting plate and a housing, the first connecting plate and the second connecting plate are respectively arranged at two ends of the housing, and the housing is filled with porous aluminum The alloy segment and the hard rubber segment, wherein the porous aluminum alloy segment is provided with a group of large hole horizontal grooves and a group of small hole horizontal grooves, and the large hole horizontal grooves and the small hole horizontal grooves are arranged at intervals in sequence. The distance between adjacent large hole transverse grooves is equal, and the distance between adjacent small hole transverse grooves is equal, so that when the force is applied, the force is uniform everywhere.

Description

A high-efficiency buffer energy-absorbing device for automobiles

technical field

The invention relates to the technical field of automobile parts, in particular to an automobile high-efficiency buffer energy-absorbing device.

Background technique

With the increasing number of automobiles and the increasing number of automobile safety accidents, people pay more and more attention to the collision safety performance of automobiles. As an important part of the passive safety of automobiles, the energy-absorbing box absorbs the kinetic energy of the collision and reduces the maximum impact force through the compression deformation of the energy-absorbing box when a collision accident occurs, so as to alleviate the impact and reduce the damage to the car body and the injury of personnel caused by the collision accident. . The traditional energy-absorbing box is composed of steel sheet metal parts. This kind of energy-absorbing box is heavy. In recent years, most of the energy-absorbing boxes developed are made of aluminum alloy. However, due to its simple extrusion structure, its crushing characteristics, Energy absorption capacity and crash stability are also not high.

Contents of the invention

Purpose of the invention: The technical problem to be solved by the present invention is to provide a high-efficiency buffer energy-absorbing device for automobiles in view of the deficiencies in the prior art.

In order to solve the above technical problems, the present invention provides a high-efficiency buffer energy-absorbing device for automobiles, which includes a first connecting plate, a second connecting plate and a housing, the first connecting plate and the second connecting plate are respectively arranged at two ends of the housing, The casing is filled with porous aluminum alloy segments and hard rubber segments, wherein the porous aluminum alloy segment is provided with a group of large hole horizontal grooves and a group of small hole horizontal grooves, and the large hole horizontal grooves and small hole horizontal grooves are arranged at intervals in sequence.

In the present invention, the distances between adjacent large hole transverse grooves are equal, and the distances between adjacent small hole transverse grooves are equal, so that when a force is applied, the force is uniform everywhere.

In the present invention, the ratio of the length of the porous aluminum alloy segment to the hard rubber segment is between 1:2 and 2:1, and the ratio of the porous aluminum alloy segment to the hard rubber segment is moderate, and they cooperate with each other to help buffer the impact force. In the process of car collision, the hard rubber block is squeezed and deformed, which can play a buffer role, and the porous aluminum alloy section is deformed, which can play the role of energy absorption. The length of the porous aluminum alloy section and the hard rubber section The ratio is between 1:2 and 2:1, and the cushioning effect and energy absorption effect of the energy-absorbing device can be optimized through reasonable ratio matching.

In the present invention, the porous aluminum alloy segment and the hard rubber segment are fixedly connected by an adhesive

In the present invention, the housing is arranged in a wave structure or a broken line structure, and the housing is arranged in a wave structure or a broken line structure, which can play a buffering role and prevent the shell from being damaged when it is directly impacted.

In the present invention, the cross-sections of the large-hole horizontal groove and the small-hole horizontal groove are both circular, which is convenient for buffering and absorbing energy.

In the present invention, the cross-sections of the large-hole horizontal groove and the small-hole horizontal groove are both elliptical, which is convenient for buffering and absorbing energy.

In the present invention, the cross-sections of the large hole transverse groove and the small hole transverse groove are both regular polygons, which is convenient for buffering and absorbing energy.

In the present invention, the centerlines of the large-hole transverse grooves and the small-hole transverse grooves are perpendicular to the centerline of the casing, which is convenient for buffering and absorbing energy.

In the present invention, the groove wall of the large-hole horizontal groove is arranged in a wave structure, and the groove arm of the horizontal groove is also arranged in a wave structure, which can increase the overall shock absorption and energy absorption effect of the device, and distribute part of the force in the longitudinal direction to the horizontal direction. .

In the present invention, the groove wall of the horizontal groove of the small hole is arranged in a wave structure.

Beneficial effect: the buffering energy-absorbing device has good buffering and energy-absorbing effect. By designing and manufacturing the aluminum alloy shell, aluminum alloy material section and hard rubber section with a structure with high cushioning and energy-absorbing performance, the energy-absorbing potential of the energy-absorbing box can be maximized, which can effectively reduce vehicle collision damage and personal injury.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, and the advantages of the above and other aspects of the present invention will become clearer.

Fig. 1 a is the structural representation of embodiment 1;

Figure 1b is a schematic diagram of installation;

Fig. 2 is a schematic sectional view of embodiment 1;

Fig. 3 is the schematic diagram of embodiment 1 plane structure housing;

Figure 4a is a schematic diagram of the working principle;

Figure 4b schematic diagram of working principle II;

Figure 4c schematic diagram of working principle three;

Fig. 5 is the schematic diagram of embodiment 2 wave structure housing;

Fig. 6 is a schematic diagram of a housing with a folded line structure in embodiment 3;

Fig. 7 is a schematic diagram of the housing of Embodiment 4;

Fig. 8 is a schematic diagram of the housing of Embodiment 5;

Fig. 9 is a schematic cross-sectional view of the large hole transverse groove and the small hole transverse groove of embodiment 6;

Fig. 10 is a schematic cross-sectional view of the large hole transverse groove and the small hole transverse groove of embodiment 7;

Fig. 11 is a cross-sectional schematic view of the large hole transverse groove and the small hole transverse groove of embodiment 8;

Fig. 12a is a schematic diagram of the wall of the large hole transverse groove in embodiment 9;

Fig. 12b is a schematic diagram of the wall of the horizontal groove of the small hole in Embodiment 9.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings.

Example 1:

As shown in Figure 1a, a kind of high-efficiency buffer energy-absorbing device for automobiles provided by this embodiment includes a first connecting plate 1, a second connecting plate 2 and a housing 3, and the first connecting plate 1 and the second connecting plate 2 are respectively arranged on the shell The two ends of the body are respectively used to connect the anti-collision beam and the longitudinal beam of the car.

As shown in Figure 1b, it includes a buffer energy-absorbing device 8, an anti-collision beam 9 and a longitudinal beam 10, the first connecting plate 1 of the buffering energy-absorbing device 8 is fixedly connected to the anti-collision beam 9, and the second connecting plate 2 is fixedly connected to the longitudinal beam 10 , a buffer energy-absorbing device 8 is connected to the longitudinal beams 9 on both sides.

As shown in Figure 2, the shell 3 is provided with a porous aluminum alloy section 4 and a hard rubber section 5, the porous aluminum alloy section 4 is close to the side of the longitudinal beam, and the hard rubber section 5 is close to the side of the anti-collision beam. A group of large hole horizontal grooves 6 and a group of small hole horizontal grooves 7 are arranged on the porous aluminum alloy section, and the large hole horizontal grooves and the small hole horizontal grooves are arranged at intervals in sequence. Arranged at intervals both axially and radially. The distances between adjacent large hole transverse grooves are equal, and the distances between adjacent small hole transverse grooves are equal. The center line of the large hole transverse groove and the small hole transverse groove is perpendicular to the shell center line.

The length ratio of the porous aluminum alloy segment to the hard rubber segment is between 1:2 and 2:1, and in this embodiment is 1.5:1.

As shown in Figure 3, the shell 3 is a planar structure, and the shell 3 is made of aluminum alloy, which is extruded and heat-treated to make it have excellent impact energy absorption performance and compression deformation mode.

The porous aluminum alloy segment 4 is casted and heat-treated to make it have excellent impact energy absorption performance and compression deformation mode.

In the high-efficiency buffering and energy-absorbing device for automobiles provided in this embodiment, the aluminum alloy shell can absorb a certain amount of collision energy, the hard rubber can improve the buffering capacity, and the porous aluminum alloy material block can effectively absorb the collision energy and have buffering capacity.

Specifically, the hard rubber segment is first deformed, and then the porous aluminum alloy segment is deformed, so that the entire buffer energy-absorbing structure is uniformly compressed and deformed, and its energy-absorbing potential is maximized.

working principle:

1. Set holes of different sizes, and use the stress concentration at the edge of the round hole. Under the action of the impact force, the stress at the edge of the hole increases sharply, forming a plastic zone and entering the plastic flow, as shown in Figure 4a and Figure 4b.

2. Under the continuous action of the load, the plastic deformation and plastic flow of different hole sizes make a plastic hinge around the hole, as shown in Figure 4c

3. The material around the hole flows in the form of a plastic hinge, so that the hole can produce radial deformation and achieve a buffer effect, while the rotation of the plastic hinge achieves an energy-dissipating effect

4. The plastic deformation and flow of the material around the hole are coordinated with each other, so that the material has a small stiffness in the energy-absorbing stage and has a good cushioning effect. At the same time, all the materials around the hole produce plastic flow and have an efficient energy-absorbing effect.

Example 2:

As shown in FIG. 5 , the difference between this embodiment and embodiment 1 is that the housing 3 has a corrugated structure.

Example 3:

As shown in FIG. 6 , the difference between this embodiment and Embodiment 1 is that the housing 3 has a broken line structure.

Example 4:

As shown in FIG. 7 , the difference between this embodiment and embodiment 2 is that the middle section of the housing 3 has a corrugated structure, and both ends have a planar structure.

Example 5:

As shown in FIG. 8 , the difference between this embodiment and Embodiment 3 is that the middle section of the housing 3 is a broken line structure, and the two ends are plane structures.

Embodiment 6:

As shown in FIG. 9 , this embodiment is based on Embodiment 1, and the cross-sections of the large-hole horizontal groove and the small-hole horizontal groove are both circular. The radius of the large hole transverse groove is 10mm, and the radius of the small hole transverse groove is 4mm.

Embodiment 7:

As shown in Fig. 10, the difference between this embodiment and embodiment 6 is that the transverse grooves of the large holes and the transverse grooves of the small holes are both elliptical in cross-section.

Embodiment 8:

As shown in Figure 11, the difference between this embodiment and Embodiment 6 is that the cross-sections of the large-hole horizontal groove and the small-hole horizontal groove are both diamond-shaped.

Embodiment 9:

As shown in Figure 12a, the groove wall of the large-hole horizontal groove is set in a wave structure. to the landscape.

The present invention provides a high-efficiency buffer energy-absorbing device for automobiles. There are many methods and approaches for realizing the technical solution. The above descriptions are only preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, On the premise of not departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the present invention. All components that are not specified in this embodiment can be realized by existing technologies.

Claims (10)

1. A high-efficiency buffer energy-absorbing device for an automobile, characterized in that it comprises a first connecting plate (1), a second connecting plate (2) and a housing (3), the first connecting plate (1) and the second connecting plate (2) respectively arranged at both ends of the shell (3), filled with porous aluminum alloy segment (4) and hard rubber segment (5), wherein the porous aluminum alloy segment (4) is provided with a group of large hole transverse grooves ( 6) and one group of small hole horizontal grooves (7), the large hole horizontal grooves and the small hole horizontal grooves are arranged at intervals successively. 2. A high-efficiency buffer and energy-absorbing device for automobiles according to claim 1, characterized in that the distances between adjacent large-hole transverse grooves are equal, and the distances between adjacent small-hole transverse grooves are equal. 3. A high-efficiency buffer and energy-absorbing device for automobiles according to claim 1, characterized in that the ratio of the lengths of the porous aluminum alloy segment to the hard rubber segment is between 1:2 and 2:1. 4. A high-efficiency buffer and energy-absorbing device for automobiles according to claim 1, wherein the housing is configured as a wave structure or a broken line structure. 5. A high-efficiency buffer and energy-absorbing device for automobiles according to claim 1, characterized in that the cross-sections of the large-hole transverse grooves and the small-hole transverse grooves are both circular. 6. A high-efficiency buffer and energy-absorbing device for automobiles according to claim 1, characterized in that the cross-sections of the large-hole transverse groove and the small-hole transverse groove are both elliptical. 7. A high-efficiency buffer and energy-absorbing device for automobiles according to claim 1, wherein the cross-sections of the large-hole transverse groove and the small-hole transverse groove are both regular polygons. 8. The high-efficiency buffer and energy-absorbing device for automobiles according to claim 1, characterized in that, the centerlines of the large-hole transverse grooves and the small-hole transverse grooves are perpendicular to the centerline of the casing. 9. A high-efficiency buffer and energy-absorbing device for automobiles according to claim 1, characterized in that, the groove walls of the large-hole horizontal grooves are arranged in a wave structure. 10. A high-efficiency buffer and energy-absorbing device for automobiles according to claim 1, characterized in that, the groove walls of the horizontal grooves of the small holes are arranged in a wave structure.