Pedestrian protection beam of aluminum alloy extrusion part and stamping part combined structure

Abstract

The utility model relates to the technical field of automobile accessories. A pedestrian protection beam of an aluminum alloy extrusion part and stamping part combined structure comprises a cross beam, the cross beam is a stamping forming part, a mounting hole is formed in the cross beam, and the cross beam is detachably connected with a plastic protection plate through the mounting hole; the cross beam comprises a first bending part and a second bending part which are connected in sequence, and the second bending part is horizontally arranged; supporting frames of the same structure are fixedly welded to the left side and the right side of the cross beam, and energy absorption boxes are fixedly welded to the supporting frames. The supporting frame comprises a horizontally-arranged transverse plate part and a vertically-arranged vertical plate part, and the transverse plate part and the vertical plate part are connected through an obliquely-arranged reinforcing part. A transverse plate part is welded and fixed to the upper side of the second bent part, and the end, connected with the vertical plate part, of the transverse plate part extends out of the second bent part; an energy absorption box is welded and fixed to the upper end of the side, away from the first bent part, of the vertical plate part, and the lower end of the energy absorption box is higher than the transverse plate part. The utility model is convenient to process. And external connection of a plastic protection plate is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to pedestrian protection beams. Background Technology

[0002] Due to their high specific strength, aluminum alloys are widely used in various automotive structural components, especially in pedestrian protection beams. Furthermore, automotive safety requirements are becoming increasingly stringent, demanding protection not only for vehicle occupants but also for pedestrians to minimize injuries in accidents.

[0003] Chinese patent CN204978542U discloses a pedestrian protection beam structure for automobiles, comprising: a tubular beam, the tubular beam including a tubular section and bent sections at both ends of the tubular section; and connecting frames fixedly connected to the bent sections on the side facing the bending direction, the connecting frames being connected to a connecting plate located between the automobile energy-absorbing box and the longitudinal beam support. By setting up this pedestrian protection beam structure, the impact force concentrated on the anti-collision beam during a collision with a pedestrian can be dispersed, protecting the pedestrian and reducing the probability of fractures after a collision.

[0004] In this patent, the protective cover cannot be externally attached to the side of the tube beam, which is detrimental to the decoration of the pedestrian protection beam side. Furthermore, the connecting frame in this patent has a left-right mirror symmetrical structure, requiring the avoidance of material mixing during assembly. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a pedestrian protection beam with a combined structure of aluminum alloy extrusion and stamping parts, in order to solve at least one of the above technical problems.

[0006] To achieve the above objectives, this utility model provides a pedestrian protection beam with a combination structure of aluminum alloy extrusion and stamping, including a crossbeam. The crossbeam is a stamped part, and mounting holes are provided on the crossbeam. The crossbeam is detachably connected to a plastic protective plate through the mounting holes.

[0007] The crossbeam includes a first bent portion and a second bent portion connected in sequence, wherein the second bent portion is horizontally arranged;

[0008] The left and right sides of the crossbeam are welded and fixed with identical support frames, and energy-absorbing boxes are welded and fixed on the support frames.

[0009] Both the energy-absorbing box and the support frame are aluminum alloy extrusion parts;

[0010] The support frame includes a horizontally arranged horizontal plate and a vertically arranged vertical plate, which are connected by an inclined reinforcing part;

[0011] The horizontal plate portion is welded and fixed to the upper side of the second bending portion, and the end of the horizontal plate portion that connects to the vertical plate portion extends out of the second bending portion;

[0012] The energy-absorbing box is welded to the upper end of the vertical plate on the side away from the first bend, and the lower end of the energy-absorbing box is higher than the horizontal plate.

[0013] This invention combines stamped parts and extruded aluminum alloy parts for easy processing. Simultaneously, the optimized beam structure facilitates the connection of an external plastic protective plate. The optimized support frame structure facilitates the transition connection to the energy-absorbing box, transferring force to it. This invention uses a support frame with a consistent structure, avoiding the risk of material mixing.

[0014] More preferably, both the first bend and the second bend are provided with the mounting hole, and the mounting hole is a hexagonal hole;

[0015] The mounting hole is used to fix the rivet nut.

[0016] More preferably, the top of the first bend is provided with an upwardly extending extension, and each extension has a mounting hole.

[0017] More preferably, the second bent portion is provided with a positioning hole.

[0018] It facilitates positioning during assembly.

[0019] More preferably, the crossbeam is made of 6063 aluminum-magnesium alloy.

[0020] More preferably, the support frame is made of 6063 aluminum-magnesium alloy.

[0021] More preferably, the energy-absorbing box is made of 6063 aluminum-magnesium alloy.

[0022] More preferably, the cross-section of the energy-absorbing box is a rounded rectangle, and the lateral length of the energy-absorbing box is greater than the longitudinal length of the energy-absorbing box.

[0023] More preferably, the end of the energy-absorbing box away from the support frame has a mounting hole for connecting to the vehicle subframe.

[0024] More preferably, the wall thickness of the energy-absorbing box is 1.8mm-2.2mm.

[0025] More preferably, the wall thickness of the support frame is 3.4mm-3.6mm.

[0026] More preferably, the lower end of the energy-absorbing box is lower than the connection between the reinforcing part and the vertical plate part.

[0027] Compared with the prior art, the beneficial effects of this utility model are:

[0028] Energy-absorbing boxes are symmetrically arranged at both ends of the crossbeam and welded to the support frame. The crossbeam is manufactured using a stamping process, while the energy-absorbing boxes and reinforcing parts are made of extruded profiles. This invention achieves lightweight design while featuring a simple structure, uniform wall thickness distribution, high stability, easy manufacturing process, and satisfactory rigidity and modal characteristics, along with excellent energy absorption performance. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a specific embodiment 1 of the present utility model;

[0030] Figure 2 This is a top view of a specific embodiment 1 of the present utility model;

[0031] Figure 3 This is a bottom view of a specific embodiment 1 of the present utility model;

[0032] Figure 4 This is a schematic diagram of a specific embodiment 1 of the present utility model;

[0033] Figure 5 This is a cross-sectional view of the support frame in specific embodiment 1 of this utility model;

[0034] Figure 6 This is a cross-sectional view of the energy-absorbing box in specific embodiment 1 of this utility model.

[0035] In the diagram: 1 is the crossbeam, 2 is the support frame, 3 is the energy-absorbing box, 11 is the first bend, 12 is the second bend, 13 is the mounting hole, 14 is the positioning hole, 21 is the horizontal plate, 22 is the vertical plate, and 23 is the reinforcing part. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings.

[0037] See Figures 1 to 6Specific Embodiment 1: A pedestrian protection beam with a combined structure of aluminum alloy extrusion and stamping parts includes a crossbeam 1, which is a stamped part. The crossbeam 1 has mounting holes and is detachably connected to a plastic protective plate through these holes. The crossbeam 1 includes a first bent portion 11 and a second bent portion 12 connected in sequence, with the second bent portion 12 horizontally positioned. Identical support frames 2 are welded and fixed to the left and right sides of the crossbeam 1, and energy-absorbing boxes 3 are welded and fixed to the support frames 2. The energy-absorbing boxes 3... Both the support frame 2 and the support frame 2 are aluminum alloy extrusion parts. The support frame 2 includes a horizontally arranged horizontal plate 21 and a vertically arranged vertical plate 22, which are connected by an inclined reinforcing part 23. The horizontal plate 21 is welded and fixed to the upper side of the second bending part 12, and the end of the horizontal plate 21 connecting to the vertical plate 22 extends into the second bending part 12. The energy-absorbing box 3 is welded and fixed to the upper end of the side of the vertical plate 22 away from the first bending part 11, and the lower end of the energy-absorbing box 3 is higher than the horizontal plate 21. This utility model combines stamping parts and aluminum alloy extrusion parts, which facilitates processing. At the same time, by optimizing the structure of the crossbeam 1, it is easy to connect an external plastic protective plate. By optimizing the structure of the support frame 2, it is easy to transition and connect the energy-absorbing box 3, so that the force can be transferred to the energy-absorbing box 3. This utility model uses a support frame 2 with the same structure, which avoids the risk of material mixing.

[0038] The end of the second bend 12 away from the first bend 11 is provided with a downwardly bent arc-shaped flange.

[0039] The angle between the reinforcing part 23 and the horizontal plate part 21 is greater than the angle between the reinforcing part 23 and the vertical plate part 22. The angle between the reinforcing part 23 and the horizontal plate part 21 is 65°-68°.

[0040] The length of the contact point between the vertical plate and the second bend is greater than the length of the vertical plate protruding from the second bend. The length direction refers to the axial direction of the opening in the energy-absorbing box. The length of the contact point between the vertical plate and the second bend is 18mm-22mm. The length of the vertical plate protruding from the second bend is 8mm-12mm.

[0041] Both the first bend 11 and the second bend 12 are provided with mounting holes 13, which are hexagonal holes; the mounting holes are used to fix rivet nuts. The top of the first bend 11 is provided with an upwardly extending extension, and each extension is provided with a mounting hole 13. The second bend 12 is provided with a positioning hole 14 for easy positioning during assembly.

[0042] The crossbeam 1 is made of 6063 aluminum-magnesium alloy. The support frame 2 is made of 6063 aluminum-magnesium alloy. The energy-absorbing box 3 is made of 6063 aluminum-magnesium alloy.

[0043] The cross-section of the energy-absorbing box 3 is a rounded rectangle, and the horizontal length of the energy-absorbing box 3 is greater than the vertical length of the energy-absorbing box 3.

[0044] The end of the energy-absorbing box 3 away from the support frame 2 has a mounting hole for connecting to the vehicle subframe.

[0045] The wall thickness of the energy-absorbing box 3 is 1.8mm-2.2mm. The wall thickness of the support frame 2 is 3.4mm-3.6mm.

[0046] The lower end of the energy-absorbing box 3 is below the connection between the reinforcing part 23 and the vertical plate part 22. The lower end of the energy-absorbing box 3 is adjacent to the connection between the reinforcing part 23 and the vertical plate part 22.

[0047] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A pedestrian protection beam with a combined structure of aluminum alloy extrusion and stamping parts, comprising a crossbeam, characterized in that, The crossbeam is a stamped part, and the crossbeam is provided with mounting holes. The crossbeam is detachably connected to the plastic protective plate through the mounting holes. The crossbeam includes a first bent portion and a second bent portion connected in sequence, wherein the second bent portion is horizontally arranged; The left and right sides of the crossbeam are welded and fixed with identical support frames, and energy-absorbing boxes are welded and fixed on the support frames. Both the energy-absorbing box and the support frame are aluminum alloy extrusion parts; The support frame includes a horizontally arranged horizontal plate and a vertically arranged vertical plate, which are connected by an inclined reinforcing part; The horizontal plate portion is welded and fixed to the upper side of the second bending portion, and the end of the horizontal plate portion that connects to the vertical plate portion extends out of the second bending portion; The energy-absorbing box is welded to the upper end of the vertical plate on the side away from the first bend, and the lower end of the energy-absorbing box is higher than the horizontal plate.

2. The pedestrian protection beam with a combined structure of aluminum alloy extrusion and stamping parts according to claim 1, characterized in that: Both the first bend and the second bend are provided with the mounting hole, which is a hexagonal hole. The mounting hole is used to fix the rivet nut.

3. The pedestrian protection beam with a combined structure of aluminum alloy extrusion and stamping parts according to claim 2, characterized in that: The top of the first bend is provided with an upwardly extending extension, and each extension has a mounting hole.

4. The pedestrian protection beam with a combined structure of aluminum alloy extrusion and stamping parts according to claim 1, characterized in that: The second bend is provided with a positioning hole.

5. The pedestrian protection beam with a combined structure of aluminum alloy extrusion and stamping parts according to claim 1, characterized in that: The crossbeam is made of 6063 aluminum-magnesium alloy; The support frame is made of 6063 aluminum-magnesium alloy; The energy-absorbing box is made of 6063 aluminum-magnesium alloy.

6. The pedestrian protection beam with a combined structure of aluminum alloy extrusion and stamping parts according to claim 1, characterized in that: The cross-section of the energy-absorbing box is a rounded rectangle, and the lateral length of the energy-absorbing box is greater than the longitudinal length of the energy-absorbing box.

7. The pedestrian protection beam with a combined structure of aluminum alloy extrusion and stamping parts according to claim 1, characterized in that: The energy-absorbing box has a mounting hole at one end away from the support frame for connecting to the vehicle subframe.

8. The pedestrian protection beam with a combined structure of aluminum alloy extrusion and stamping parts according to claim 1, characterized in that: The wall thickness of the energy-absorbing box is 1.8mm-2.2mm; The wall thickness of the support frame is 3.4mm-3.6mm.

9. The pedestrian protection beam with a combined structure of aluminum alloy extrusion and stamping parts according to claim 1, characterized in that: The lower end of the energy-absorbing box is below the connection between the reinforcing part and the vertical plate.

Images