Die-casting aluminum automobile anti-collision beam with multi-stage collapse guide groove

Abstract

The application discloses a die-casting aluminum automobile anti-collision beam with multistage collapse guide grooves, which belongs to the technical field of anti-collision beams and comprises a beam body, an energy absorption box assembly and a gasket assembly arranged on the beam body; the energy absorption box assembly comprises a first box body, and a plurality of inwardly bent first collapse grooves are arranged on the side surface of the first box body. The gasket assembly is arranged in the energy absorption box assembly and is used for supporting the plurality of first collapse grooves of the first box body from the inner side, only one set of first collapse grooves is reserved, so that the first box body can collapse when being impacted, and the first box body is prevented from being bent. The gasket assembly slides with the collapse of the first box body, releases the first collapse grooves one by one, and can guide the first collapse grooves to be released step by step, so that the first box body can be prevented from being abnormally bent to a certain extent, and the energy absorption effect of fully guiding the collapse is achieved.

Description

Technical Field

[0001] This invention relates to the field of crash beams, and more specifically to a die-cast aluminum automotive crash beam with multi-stage crumple zone guide grooves. Background Technology

[0002] Car crash beams are typically located at the lower front of a car and are connected to the chassis. They are used to transfer the impact force to the chassis when the front of the car is hit, thus protecting the front compartment. Furthermore, after an impact, in order to absorb the impact energy, a pair of energy-absorbing boxes are installed between the crash beam and the chassis. Guide grooves are cut into the energy-absorbing boxes so that they can completely collapse along the guide grooves after an impact, thereby absorbing energy and cushioning the impact.

[0003] The existing crash beam energy absorption box has the following shortcomings: when the impact angle of the crash beam is not directly aligned with the energy absorption box, it is easy to cause abnormal collapse of the energy absorption box, such as bending to one side. As a result, it cannot guide the multiple guide slots to collapse in stages, and fails to fully utilize the energy absorption effect of all guide slots. Summary of the Invention

[0004] The purpose of this invention is to provide a die-cast aluminum automotive crash beam with multi-stage collapse guide grooves, which solves the problem that the energy-absorbing box of the existing crash beam cannot fully utilize all the collapse guide grooves for staged collapse.

[0005] The present invention achieves the above objectives through the following technical solutions: A die-cast aluminum automotive crash beam with multi-stage crumple zone guide grooves includes a beam body, on which are provided... An energy-absorbing box assembly includes a first box body, and a plurality of inwardly bent first collapse grooves are provided on the side surface of the first box body. The padding assembly includes a second box body slidably disposed within a first box body for supporting the inner side wall of the first box body. The inner wall of the first box body near the beam body is provided with a pusher connected to the second box body, which is used to drive the second box body to slide when the first box body collapses, thereby causing the first collapse groove to collapse in stages.

[0006] As a preferred embodiment of the present invention, an installation part is provided between the first box body and the beam body, and the pusher is provided on the installation part. In this embodiment, the installation part is provided and is connected to the side wall of the beam body by welding or bolting.

[0007] As a preferred embodiment of the present invention, the two ends of the pusher are connected to the two boxes respectively by elastic rubber seats or by ball cage shaft. When the beam is impacted, the mounting part may not be able to remain parallel to the end face of the second box due to the energy absorption of the first box collapsing. Therefore, this embodiment provides the pusher with a movable space so that the mounting part can apply the thrust to the second box during the collapse process to make the second box slide.

[0008] As a preferred embodiment of the present invention, the end of the first box body away from the beam body is further provided with a connecting component for connecting with the frame. The connecting component includes a connecting seat for accommodating the sliding of the second box body. This embodiment enables the second box body to slide in by providing the connecting component.

[0009] In a preferred embodiment of the present invention, the second box body is a hollow box body with a regular octagonal cross-section. Each of the four sides supporting the inner wall of the first box body has a second collapse groove. Each of the second collapse grooves has a pad embedded in it to prevent collapse. The connecting seat has a guide mechanism for removing the pads one by one. This embodiment further provides a second collapse groove on the second box body so that it can also collapse and absorb energy. To prevent disorderly collapse and loss of support for the first box body, this embodiment sets it to a regular octagonal structure, with four grooves on the horizontal or vertical sides to support the inner wall of the first box body, and four grooves on the inclined sides, forming four triangular cavities with the inner wall of the first box body to facilitate the removal of the pads.

[0010] In a preferred embodiment of the present invention, the length of the pad strip is longer than the second collapse groove, and the guiding mechanism includes a guide strip with a guide slope to guide both ends of the pad strip away from the second collapse groove. In this embodiment, a guiding mechanism is provided in the connecting seat, which extends into four triangular cavities to contact both ends of the pad strip and lift them up. The second box body that loses the pad strip can collapse step by step along the second collapse groove, while the part of the second box body that does not enter the connecting seat continues to support the first box body.

[0011] As a preferred embodiment of the present invention, the four corners of the inner sidewall of the connecting seat are provided with obliquely extending extensions, and each extension is provided with two mutually perpendicular guide strips. The connecting seat is provided with a baffle for collapsing and absorbing energy in the second box. This embodiment utilizes a triangular cavity to specifically set up a guiding mechanism.

[0012] As a preferred embodiment of the present invention, elastic connecting ribs are connected in series between the pads on each side of the second box body. The elastic connecting ribs are used to contact and support the bending protrusion formed inward by the first collapse groove. This embodiment uses elastic connecting ribs as pads to directly support the protrusion formed on the inner wall of the first box body. The elastic connecting ribs have the supporting capacity when under pressure and the elastic deformation capacity when lifted by the guide strip.

[0013] The beneficial effects of the present invention are as follows: The present invention provides a padding assembly inside the energy-absorbing box assembly to support multiple first collapse grooves of the first box body from the inside, leaving only one set of first collapse grooves so that it can collapse when impacted to prevent bending. Moreover, the padding assembly slides as the first box body collapses, releasing the first collapse grooves one by one, thereby guiding the first collapse grooves to release in stages. This can avoid abnormal bending of the first box body to a certain extent and achieve a fully guided energy absorption effect. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 This is a top view of the overall structure of the present invention; Figure 3 The energy-absorbing box assembly of the present invention is along Figure 2 A three-dimensional cross-sectional view along the AA direction; Figure 4 For the present invention Figure 3 Enlarged view of the structure of section B; Figure 5 For the present invention Figure 3 Schematic diagram after removing the gasket assembly; Figure 6 This is a top sectional view of the energy-absorbing box assembly of the present invention; Figure 7 For the present invention Figure 6 C-axis view; Figure 8 This is a schematic diagram of the gasket assembly of the present invention; Figure 9 This is a schematic diagram of the cross-sectional shape of the pad strip in Embodiment 2 of the present invention; In the diagram: 1. Beam; 2. Energy-absorbing box assembly; 21. First box; 22. First collapse groove; 23. Mounting part; 24. Pushing part; 3. Pad assembly; 31. Second box; 32. Second collapse groove; 33. Pad strip; 34. Elastic connecting rib; 4. Connecting assembly; 41. Connecting seat; 42. Extension part; 43. Guide strip; 44. Guide slope; 45. Baffle. Detailed Implementation

[0015] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0016] Example 1

[0017] like Figure 1-8As shown, a die-cast aluminum automotive crash beam with multi-stage collapse guide grooves includes a beam body 1, an energy-absorbing box assembly 2 and a liner assembly 3 disposed on the beam body 1; the energy-absorbing box assembly 2 includes a first box body 21, and a plurality of inwardly bent first collapse grooves 22 are disposed on the side surface of the first box body 21; the liner assembly 3 includes a second box body 31 slidably disposed inside the first box body 21 for supporting the inner side wall of the first box body 21, and a pusher 24 connected to the second box body 31 is disposed on the inner wall of the first box body 21 near the beam body 1, so as to drive the second box body 31 to slide when the first box body 21 collapses, thereby causing the first collapse grooves 22 to collapse step by step.

[0018] This solution incorporates a padding assembly 3 inside the energy-absorbing box assembly 2 to support multiple first collapse grooves 22 of the first box body 21 from the inside. Only one set of first collapse grooves 22 is left to collapse upon impact, preventing bending. The padding assembly 3 slides as the first box body 21 collapses, releasing the first collapse grooves 22 one by one. This guides the first collapse grooves 22 to release gradually, which can, to a certain extent, prevent abnormal bending of the first box body 21 and achieve a fully guided energy absorption effect.

[0019] Specifically, during use, when the beam 1 is impacted, the impact force acts on the first box 21 and the pusher 24. The first unsupported first collapse groove 22 at the front row deforms and collapses inward. The pusher 24 pushes the second box 31 to slide towards the frame, thereby exposing the second row of first collapse grooves 22, thus causing gradual collapse. In order to make the energy-absorbing box structure stable, this embodiment adopts aluminum die-casting process for production.

[0020] Preferably, a mounting part 23 is provided between the first box body 21 and the beam body 1, and the pusher 24 is provided on the mounting part 23. In this embodiment, the mounting part 23 is provided and is connected to the side wall of the beam body 1 by welding or bolts.

[0021] Preferably, the two ends of the pusher 24 are connected to the two boxes respectively by elastic rubber seats or by ball cage shaft. When the beam 1 is impacted, the mounting part 23 may not be able to remain parallel to the end face of the second box 31 due to the energy absorption of the first box 21 collapsing. Therefore, this solution provides the pusher 24 with a space for movement so that the mounting part 23 can continuously apply the thrust to the second box 31 during the collapse process, so that the second box 31 can slide. Specifically, as a feasible implementation, in this embodiment, the pusher 24 adopts a rigid rod in the middle, and rubber seats that can be bent slightly are provided between the two ends and the mounting part 23 and the second box 31. Alternatively, ball joints can be provided at both ends of the pusher, and corresponding ball joint seats can be provided on the mounting part 23 and the second box 31.

[0022] The first box 21 is also provided with a connecting component 4 for connecting to the frame at the end away from the beam 1. The connecting component 4 includes a connecting seat 41, which is used to accommodate the sliding of the second box 31. In this embodiment, by setting the connecting component 4, the second box 31 can slide in.

[0023] Preferably, the second box 31 is a hollow box with a regular octagonal cross-section. The four sides of the box 31 that support the inner wall of the first box 21 are provided with second collapse grooves 32. The second collapse grooves 32 are respectively embedded with pads 33 to prevent the second collapse grooves 32 from collapsing. The connecting seat 41 is provided with a guide mechanism for removing the pads 33 one by one. In this embodiment, the second box 31 is further provided with second collapse grooves 22 so that it can also collapse and absorb energy. For further details, please refer to Figure 8 In order to prevent the second collapse groove 22 from collapsing disorderly and losing its ability to support the first box 21, this embodiment is set as a regular octagonal structure with four horizontal or vertical sides, which are used to support the inner wall of the first box 21 respectively, and four inclined sides, which form four triangular cavities with the inner wall of the first box 21 so that the pad 33 can be removed.

[0024] Preferably, the length of the pad strip 33 is longer than the second shrinkage groove 32. The guiding mechanism includes a guide strip 43 with a guide slope 44 to guide both ends of the pad strip 33 away from the second shrinkage groove 32. In this embodiment, a guiding mechanism is provided in the connecting seat 41, which extends into four triangular cavities to contact both ends of the pad strip 33 and lift them up. The second box 21, which loses the pad strip 33, can shrink step by step along the second shrinkage groove 32, while the part of the second box 31 that does not enter the connecting seat 41 continues to support the first box 21.

[0025] Preferably, the inner sidewall of the connecting seat 41 is provided with obliquely extending extensions 42 at the four corners, and each extension 42 is provided with two mutually perpendicular guide bars 43. The connecting seat 41 is provided with a baffle 45 for collapsing and absorbing energy in the second box 31.

[0026] Preferably, elastic connecting ribs 34 are connected in series between the pads 33 on each side of the second box body 31. The elastic connecting ribs 34 are used to contact and support the bending protrusion formed inward by the first collapse groove 22. In this embodiment, by setting the elastic connecting ribs 34 as pads, they directly support the protrusion formed on the inner wall of the first box body 21. The elastic connecting ribs 34 have the supporting capacity when under pressure and the elastic deformation capacity when lifted by the guide strip 43.

[0027] Working principle: In this embodiment, the first box 21 and the second box 31 collapse in opposite directions, making full use of multiple collapse grooves to absorb energy. When the beam 1 is impacted, the mounting part 23 applies pressure to the first box 21, and the first collapse groove 22 in the front row, which is not supported by the second box 21, collapses and deforms. At the same time, the pushing part 24 drives the second box 31 to slide into the connecting seat 41, exposing the second row of first collapse grooves 22 for collapse and energy absorption. Simultaneously, the pad strip 33 that enters the connecting seat 41 is lifted by the guide slope 44, and the second collapse groove 32 loses its support. When the second box 31 contacts the baffle 45, it also collapses. The lifted pad strip 33 and the elastic connecting rib 34 are also folded and bent in the connecting seat 41. Thus, the first collapse groove 22 and the second collapse groove 32 collapse in stages from both ends, greatly improving the energy absorption effect of the energy absorption box.

[0028] Example 2

[0029] Please see Figure 9 Based on Embodiment 1, in order to increase the ability of the pad strip 33 to prevent the second shrinkage groove 32 from collapsing prematurely, the cross-section of the pad strip 33 and the second shrinkage groove 32 is set to a gourd shape. When the second box 31 is subjected to a load parallel to the axial direction, the pad strip 33 is fitted and clamped in the second shrinkage groove 32 to prevent the second shrinkage groove 32 from collapsing disorderly.

[0030] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A die-cast aluminum automotive crash beam with multi-stage crumple zone guide grooves, characterized in that, Includes a beam body (1), on which are provided a The energy-absorbing box assembly (2) includes a first box body (21), and a plurality of inwardly bent first collapse grooves (22) are provided on the side surface of the first box body (21). The padding assembly (3) includes a second box (31) slidably disposed within the first box (21) for supporting the inner wall of the first box (21). The inner wall of the first box (21) near the beam (1) is provided with a pusher (24) connected to the second box (31) for driving the second box (31) to slide when the first box (21) collapses, thereby causing the first collapse groove (22) to collapse step by step.

2. The die-cast aluminum automotive anti-collision beam with multi-stage crumple zone guide grooves according to claim 1, characterized in that, An installation part (23) is provided between the first box body (21) and the beam body (1), and the pusher (24) is provided on the installation part (23).

3. A die-cast aluminum automotive anti-collision beam with multi-stage crumple zone guide grooves according to claim 2, characterized in that, The pusher (24) is connected to the two boxes at both ends by elastic rubber seats or by ball cage shaft.

4. A die-cast aluminum automotive anti-collision beam with multi-stage crumple zone guide grooves according to claim 1, characterized in that, The first box (21) is also provided with a connecting component (4) for connecting to the frame at one end away from the beam (1). The connecting component (4) includes a connecting seat (41) for accommodating the sliding of the second box (31).

5. A die-cast aluminum automotive anti-collision beam with multi-stage crumple zone guide grooves according to claim 4, characterized in that, The second box (31) is a hollow box with a regular octagonal cross section. The four sides of the box that support the inner wall of the first box (21) are provided with second collapse grooves (32). The second collapse grooves (32) are respectively embedded with pads (33) to prevent the second collapse grooves (32) from collapsing. The connecting seat (41) is provided with a guide mechanism for removing the pads (33) one by one.

6. A die-cast aluminum automotive anti-collision beam with multi-stage crumple zone guide grooves according to claim 5, characterized in that, The length of the pad (33) is longer than the second collapse groove (32). The guiding mechanism includes a guide strip (43) and a guide slope (44) is provided on the guide strip (43) to guide both ends of the pad (33) away from the second collapse groove (32).

7. A die-cast aluminum automotive anti-collision beam with multi-stage crumple zone guide grooves according to claim 6, characterized in that, The inner sidewall of the connecting seat (41) is provided with obliquely extending extensions (42) at the four corners. Each extension (42) is provided with two mutually perpendicular guide strips (43). The connecting seat (41) is provided with a baffle (45) for collapsing and absorbing energy in the second box (31).

8. A die-cast aluminum automotive anti-collision beam with multi-stage crumple zone guide grooves according to claim 5, characterized in that, The second box body (31) has elastic connecting ribs (34) connected in series between the pads (33) on each side, and the elastic connecting ribs (34) are used to contact and support the inward bending protrusion formed by the first collapse groove (22).

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