Energy absorption box and automobile

Abstract

The utility model provides an energy absorption box and an automobile provided with the energy absorption box. The energy absorption box comprises an energy absorption body and a supporting piece. The energy absorption main body is of a rectangular box-shaped structure, and a cavity is formed in the energy absorption main body; the supporting piece is fixedly arranged in the cavity, and the energy absorption body is fixedly installed on the inner side of the vehicle door ring. According to the energy absorption box, structural optimization and adaptability enhancement are conducted on the structure of an existing energy absorption box accessory, the energy absorption effect of the energy absorption box is improved through cooperation of the energy absorption body and the supporting piece, the invasion amount of a vehicle in the column collision working condition is reduced, the living space of a dummy is guaranteed, the protection effect is improved, and the requirements of the side face column collision laws and regulations are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile accessories, and particularly relates to an energy absorption box and a car equipped with the energy absorption box. Background Art

[0002] In order to meet market development trends and expand more international markets, current collision safety should not only meet domestic regulations, but also take into account the regulations of other markets during vehicle development, such as the EU ECE regulations, the Gulf GSO regulations, and the Australian ADR regulations. In 2024, both Russia and Brazil added mandatory regulatory requirements for ECE R135 side column collision conditions. With the development of the automotive industry, various technical indicators and laws and regulations in the domestic and international markets will inevitably be improved.

[0003] The regulations for side column collision clearly stipulate that the maximum deformation of the chest ribs of the dummy is ≤55mm, and the maximum deformation of the abdominal ribs is ≤65mm. Considering the severity of the column collision working conditions, it is not easy to achieve such injury indicators. To obtain small deformation of the chest ribs and abdominal ribs, it is necessary to ensure that the intrusion of the vehicle's door ring sheet metal is small enough and the passenger seat can remain stable. Therefore, the door sill of the vehicle must absorb enough energy so that the vehicle's B-pillars, door rings, seat crossbeams and other parts bear less impact and collision energy, thereby reducing their deformation and ensuring the dummy's living space and good posture.

[0004] Through the study of passenger cars on the market, it is found that the energy absorption boxes in the door sills of current passenger cars are mostly small energy absorption boxes evenly distributed, generally with a number ranging from 2 to 4. This type of energy absorption box cannot play an effective supporting role due to its small size and low strength, and cannot achieve a good energy absorption effect in the limited space of the door sill. This structure often cannot play an effective protective role in the column collision condition, resulting in excessive vehicle intrusion, insufficient dummy survival space, and even worse situations such as the seat flipping over, resulting in the dummy's injury index not meeting regulatory requirements. Therefore, inventing an energy absorption box with good energy absorption effect is a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0005] In view of the above problems, the utility model proposes an energy absorption box to solve the technical problem that the energy absorption box in the prior art cannot achieve a good energy absorption effect in the limited space of the door sill part, resulting in excessive vehicle intrusion and failure to play an effective protective role.

[0006] An energy absorbing box comprises an energy absorbing body and a supporting member;

[0007] The energy absorbing body is a rectangular box-shaped structure, and a cavity is arranged inside the energy absorbing body;

[0008] The support member is fixedly arranged in the cavity, and the energy absorbing body is fixedly installed on the inner side of the vehicle door ring.

[0009] In order to better realize the utility model, further optimization is made in the above structure. The cross-sectional shape of the energy absorbing body is "U"-shaped, and connecting parts connected to the inner side of the vehicle door ring are provided on both sides of the opening of the energy absorbing body, and the free ends of the connecting parts extend to both sides of the energy absorbing body.

[0010] In order to better realize the utility model, further optimization is made in the above structure, the energy absorbing body includes an energy absorbing front section and an energy absorbing rear section;

[0011] The fixed end of the energy absorbing front section is connected to the fixed end of the energy absorbing rear section, and the axes of the energy absorbing front section and the energy absorbing rear section coincide with each other.

[0012] In order to better realize the utility model, further optimization is made in the above structure, the length of the energy absorbing front section is 630mm, and the length of the energy absorbing rear section is 162mm.

[0013] In order to better realize the utility model, further optimization is made in the above structure. The energy absorbing body is made of HC340 / 590DP automobile steel, and the thickness of the energy absorbing body is 1.5 mm.

[0014] In order to better realize the utility model, further optimization is made in the above structure, the number of the support members is multiple, and the multiple support members are arranged along the length direction of the energy absorbing body.

[0015] In order to better realize the utility model, further optimization is made in the above structure, and the support member includes a support plate and a support sheet;

[0016] There are multiple support sheets, and the multiple support sheets are arranged around the circumference of the support plate, and the plane where the support sheets are located is perpendicular to the plane where the support plate is located.

[0017] In order to better realize the utility model, further optimization is made in the above structure, and the axis of the energy absorbing body is perpendicular to the plane where the support plate is located.

[0018] In order to better realize the utility model, further optimization is made in the above structure. The support member is made of HC420 / 780DP dual-phase steel, and the thickness of the support member is 1.2 mm.

[0019] In addition, the utility model also provides a car, which includes a car body and the above energy absorption box;

[0020] The energy absorption box is fixedly mounted on the inner side of the door ring of the automobile body.

[0021] In summary, the energy absorption box provided by the utility model has at least the following technical effects:

[0022] The energy absorption box has been structurally optimized and has enhanced its adaptability on the basis of the existing energy absorption box accessories. The energy absorption effect is improved through the coordination of the energy absorption body and the support member, the intrusion of the vehicle in the pole collision condition is reduced, the survival space of the dummy is ensured, and the protection effect is improved to meet the requirements of the side pole collision regulations.

[0023] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is the result diagram of the CAE simulation analysis and research on other vehicles on the same platform after the collision;

[0026] Figure 2 This is a result diagram of a CAE simulation analysis of a vehicle equipped with the energy absorption box of the utility model after a collision;

[0027] Figure 3 It is a structural schematic diagram of an energy absorption box of the utility model;

[0028] Figure 4 It is a structural schematic diagram of the opening side of an energy absorption box of the utility model;

[0029] Figure 5 It is a structural schematic diagram of a support member in an energy absorption box of the utility model;

[0030] Figure 6 The utility model is a structural schematic diagram of the inner side of a vehicle door ring of a vehicle.

[0031] Reference numerals:

[0032] 1. Energy absorbing body; 11. Energy absorbing front section; 12. Energy absorbing rear section; 13. Connecting part;

[0033] 2. Support member; 21. Support plate; 22. Support sheet;

[0034] 3. Vehicle door knocker. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] Embodiment 1:

[0037] like Figures 1 to 5 As shown:

[0038] An energy absorbing box comprises an energy absorbing body 1 and a supporting member 2, see Figure 3 and Figure 4 ;in,

[0039] The energy absorbing body 1 is a rectangular box-shaped structure, a cavity is provided inside the energy absorbing body 1, and one side of the energy absorbing body 1 is welded and fixed to the inner side of the vehicle door ring 3, that is, the side of the vehicle door frame facing the interior of the vehicle;

[0040] The support member 2 is fixedly arranged in the cavity, and the position of the support member 2 is limited by the energy absorbing body 1 , and the support member 2 can effectively improve the strength of the energy absorbing body 1 .

[0041] The energy absorption box improves its energy absorption effect through the cooperation of the energy absorption body 1 and the support member 2. Compared with the existing energy absorption box accessories, the energy absorption box provided in this embodiment has been structurally optimized (the combination of the energy absorption body 1 and the support member 2) and has enhanced adaptability, thereby reducing the intrusion of the vehicle in the pole collision condition and ensuring the survival space of the dummy. When a vehicle equipped with the energy absorption box is subjected to a side collision, the energy absorption box can effectively absorb the energy of the impact and collision to reduce the deformation of the vehicle, ensure the safety of the passengers on the vehicle, and improve the protection effect of the vehicle to meet the requirements of the side pole collision regulations.

[0042] Through CAE simulation analysis of other vehicles on the same platform (vehicles equipped with small energy absorption boxes (the existing energy absorption box accessories mentioned in the background technology)), it is found that when the small energy absorption box is used, the door sill is completely crushed, and the seat beam is bent and turned over. Obviously, the energy absorption efficiency of the door sill is too low. The CAE collision results are as follows: Figure 1 As shown in the figure, the front and rear cross beams of the front seats are severely deformed, the middle of the rear cross beam is deformed, and the center channel between the main cab and the co-driver cab is severely deformed. If the necessary optimization of the body structure is not carried out, it will be difficult to meet the ECE R135 regulations.

[0043] By performing CAE simulation analysis on a vehicle equipped with the energy absorption box provided in this embodiment, the CAE post-collision results are as follows: Figure 2 As shown, there is no obvious bending in the front and rear cross beams of the seat, no obvious tearing in the floor, the deformation of the center channel between the main driver's cab and the co-driver's cab is small, and the dummy's survival space is significantly improved, which improves the vehicle's protection of passengers and enables it to meet the requirements of ECE R135 regulations.

[0044] Optimally, the cross-sectional shape of the energy absorbing body 1 is "U"-shaped, that is, an opening is provided on the side wall of the energy absorbing body 1 of the rectangular box-shaped structure to reduce the use of materials, and at the same time, connecting parts 13 connected to the inner side of the vehicle door ring 3 are provided on both sides of the opening of the energy absorbing body 1, and the free ends of the connecting parts 13 extend to both sides of the energy absorbing body 1, and the energy absorbing body 1 is welded and fixed to the inner side of the vehicle door ring 3 through the connecting parts 13 to improve the stability of the connection between the energy absorbing box and the vehicle.

[0045] It should be noted that the above-mentioned opening is arranged on the side wall of the longer side of the energy absorbing body 1, see Figure 4 , when installed, the opening is set toward the vehicle door ring 3, and the length direction of the energy absorbing body 1 is parallel to the length direction of the vehicle;

[0046] The length of a car refers to the direction from the head to the tail of the car.

[0047] Optimally, the energy absorbing body 1 comprises an energy absorbing front section 11 and an energy absorbing rear section 12; wherein,

[0048] The fixed end of the energy absorbing front section 11 is connected to the fixed end of the energy absorbing rear section 12, and the axes of the energy absorbing front section 11 and the energy absorbing rear section 12 coincide with each other;

[0049] During installation, the connection between the energy absorbing front section 11 and the energy absorbing rear section 12 is avoided from the impact position of the side column collision, and the middle position of the energy absorbing front section 11 is aligned with the impact position of the side column collision condition, so that the energy absorbing body 1 can better absorb the impact and collision energy.

[0050] It should be noted that the middle position of the energy absorbing front section 11 refers to the middle of the length direction of the energy absorbing front section 11. The middle position of the energy absorbing front section 11 is not the midpoint of the length direction of the energy absorbing front section 11, but the part between the two ends of the energy absorbing front section 11. This part has sufficient strength and good energy absorption effect, and can better absorb impact and collision energy.

[0051] The fixed end of the energy absorbing front section 11 and the fixed end of the energy absorbing rear section 12 are connected and fixed by welding, so that the connection between the energy absorbing front section 11 and the energy absorbing rear section 12 is more stable;

[0052] The energy absorbing body 1 is divided into the energy absorbing front section 11 and the energy absorbing rear section 12 mainly to adapt to the design of the vehicle platform so that the energy absorbing body 1 can be installed in the limited space of the vehicle door sill part.

[0053] Optimized, the length of the energy-absorbing front section 11 is 630 mm, and the length of the energy-absorbing rear section 12 is 162 mm. After detailed CAE analysis and comprehensive consideration of the energy-absorbing efficiency on the entire energy-absorbing path, the most appropriate length is selected to meet the side column collision regulations with the most cost-effectiveness.

[0054] Of course, there are also integral energy absorption boxes in the prior art. The energy absorption boxes are made of aluminum profiles and generally extend from the front end of the door sill to the rear end of the door sill. This type of aluminum profile energy absorption box has high energy absorption efficiency and performs excellently in column collision conditions.

[0055] However, due to its large size and the high price of aluminum profiles, the cost of this structure is high, which will cause the cost of a single bicycle to increase significantly.

[0056] The overall energy absorption box provided in this embodiment has a smaller scope of modification based on the original energy absorption box accessories, avoiding major changes to the vehicle configuration, body parts and platform parts, solving the problems of energy absorption effect and cost within a smaller development scope, meeting the requirements of side column collision conditions, and the energy absorption body 1 does not use an aluminum profile energy absorption box solution, effectively reducing the cost of a single vehicle.

[0057] Optimally, the energy absorbing body 1 is made of HC340 / 590DP automotive steel, and the thickness of the energy absorbing body 1 is 1.5 mm;

[0058] HC340 / 590DP automotive steel has excellent comprehensive properties, including high strength, good plasticity, toughness and fatigue resistance.

[0059] In addition, HC340 / 590DP automotive steel also has good toughness. The excellent toughness of HC340 / 590DP automotive steel can effectively absorb the impact of external energy, improve the energy absorption effect of the energy absorption box, and thus effectively improve the safety performance of the vehicle.

[0060] In addition, when the energy absorbing body 1 made of HC340 / 590DP automobile steel is too long, its deformation is likely to develop in an uncontrollable direction during the stamping process; and dividing the energy absorbing body 1 into two parts, the energy absorbing front section 11 and the energy absorbing rear section 12, can well meet the process requirements of the energy absorbing body 1 and improve its energy absorbing effect.

[0061] Preferably, the upper and lower surfaces of the energy absorbing body 1 are both provided with a plurality of process grooves, see Figure 3The extension direction of the process groove is perpendicular to the length direction of the energy absorbing body 1 . The setting of the process groove can further improve the structural strength of the energy absorbing body 1 to improve the energy absorbing effect of the energy absorbing body 1 .

[0062] Optimally, the number of the above-mentioned support members 2 is multiple, and the multiple support members 2 are arranged along the length direction of the energy absorbing body 1, see Figure 4 , so as to improve the overall structural strength of the energy absorption box and make it have a good energy absorption effect.

[0063] Preferably, the support member 2 comprises a support plate 21 and a support sheet 22, see Figure 5 ;in,

[0064] There are multiple support sheets 22 , and the multiple support sheets 22 are arranged around the circumference of the support plate 21 , and the plane where the support sheets 22 are located is perpendicular to the plane where the support plate 21 is located.

[0065] In this embodiment, the support plate 21 is a rectangular plate structure, and the number of the above-mentioned support sheets 22 is four, and the four support sheets 22 are respectively arranged on the four sides of the support plate 21; the arrangement of the support sheets 22 can effectively improve the structural strength of the support plate 21, so as to improve the energy absorption effect of the energy absorption box.

[0066] Optimally, the axis of the energy absorbing body 1 is perpendicular to the plane where the support plate 21 is located. In the installed state, the support member 2 has two sides that fit with the two sides of the opening of the energy absorbing body 1. The support sheets 22 on the two sides of the opening of the energy absorbing body 1 corresponding to the support member 2 are fixedly installed on the inner wall of the energy absorbing body 1 by welding, so as to make the connection between the support member 2 and the energy absorbing body 1 more stable.

[0067] Optimally, the support member 2 is made of HC420 / 780DP dual-phase steel, and the thickness of the support member 2 is 1.2 mm;

[0068] HC420 / 780DP dual-phase steel is a high-strength dual-phase steel. Its fine grain structure and uniform microstructure make the material have high strength and high toughness, can withstand large loads and impact forces, and has good fatigue resistance, so that the support member 2 has good impact resistance and energy absorption effect.

[0069] Embodiment 2:

[0070] A car, comprising a car body (not shown) and the above energy absorption box, see Figure 6 ;

[0071] The energy absorption box is fixedly installed on the inner side of the vehicle door ring 3 of the vehicle body. The energy absorption effect is improved through the cooperation of the energy absorption body 1 and the support member 2 in the energy absorption box, the intrusion amount of the vehicle in the column collision condition is reduced, the safety of the vehicle is ensured, and the safety of the passengers in the vehicle is ensured.

[0072] In the description of the present utility model, it should be noted that, unless otherwise specified, "multiple" means two or more; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0073] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0074] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An energy absorption box, characterized in that: It comprises an energy absorbing body (1) and a supporting member (2); The energy absorbing body (1) is a rectangular box-shaped structure, and a cavity is provided inside the energy absorbing body (1); The support member (2) is fixedly arranged in the cavity, and the energy absorbing body (1) is fixedly installed on the inner side of the vehicle door ring (3).

2. The energy absorption box according to claim 1, characterized in that: The cross-sectional shape of the energy absorbing body (1) is a "U" shape, and connecting parts (13) connected to the inner side of the vehicle door ring (3) are provided on both sides of the opening of the energy absorbing body (1), and the free ends of the connecting parts (13) extend to both sides of the energy absorbing body (1).

3. The energy absorption box according to claim 2, characterized in that: The energy absorbing body (1) comprises an energy absorbing front section (11) and an energy absorbing rear section (12); The fixed end of the energy absorbing front section (11) is connected to the fixed end of the energy absorbing rear section (12), and the axes of the energy absorbing front section (11) and the energy absorbing rear section (12) coincide with each other.

4. The energy absorption box according to claim 3, characterized in that: The energy absorbing front section (11) has a length of 630 mm, and the energy absorbing rear section (12) has a length of 162 mm.

5. The energy absorption box according to claim 1, characterized in that: The energy absorbing body (1) is made of HC340 / 590DP automotive steel, and the thickness of the energy absorbing body (1) is 1.5 mm.

6. The energy absorption box according to any one of claims 1 to 5, characterized in that: There are a plurality of support members (2), and the plurality of support members (2) are arranged along the length direction of the energy absorbing body (1).

7. The energy absorption box according to claim 6, characterized in that: The support member (2) comprises a support plate (21) and a support sheet (22); There are a plurality of support sheets (22), and the plurality of support sheets (22) are arranged around the circumference of the support plate (21), and the plane where the support sheets (22) are located is perpendicular to the plane where the support plate (21) is located.

8. The energy absorption box according to claim 7, characterized in that: The axis of the energy absorbing body (1) is perpendicular to the plane where the supporting plate (21) is located.

9. The energy absorption box according to claim 8, characterized in that: The support member (2) is made of HC420 / 780DP dual-phase steel, and the thickness of the support member (2) is 1.2 mm.

10. An automobile, characterized in that: The invention comprises a vehicle body and an energy absorption box as claimed in any one of claims 1 to 9; The energy absorption box is fixedly mounted on the inner side of a vehicle door ring (3) of the vehicle body.

Images