Automobile front cross beam with multi-stage crumple energy absorption function

Abstract

The utility model discloses a multi-stage crumple energy absorption automobile front cross beam, which belongs to the technical field of automobile anti-collision beams and comprises an anti-collision beam body, guide columns are mounted at the left end and the right end of the anti-collision beam body, one end of each guide column extends into an energy absorption column, and the other end of each guide column is fixed on the anti-collision beam body. Connecting grooves are evenly distributed in the surfaces of the upper side and the lower side of an energy absorption column, and the interior of the energy absorption column is connected with the end of a guide column through a sleeving spring. The air storage bag is located between the end, stretching into the energy absorption column, of the guide column and the buffer plate, the buffer plate is connected with the interior of the energy absorption column through an auxiliary spring, and the air storage bag is connected with a guide rod through a conveying pipe. According to the automobile front cross beam with the multi-stage collapse energy absorption function, the multi-stage buffer protection function can be achieved when the automobile front cross beam is violently impacted in the using process, meanwhile, the flame-retardant protection function can be achieved, and the spontaneous combustion phenomenon of an automobile caused by too large impact force is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile anti-collision beams, in particular to a multi-stage crushing energy-absorbing automobile front cross beam. Background Art

[0002] Cars are important means of transportation. During the manufacturing process of cars, anti-collision beams are usually installed at the front and rear. Anti-collision beams can reduce the collision energy received by the vehicle when a collision occurs. Therefore, anti-collision beams are important components in cars.

[0003] For example, a multi-shock-absorbing automobile anti-collision beam with publication number CN216232079U comprises a main beam, energy absorbers symmetrically arranged at both ends of the main beam, the main beam comprises an arc-shaped front panel, an intermediate shell, an internal hollow crossbeam, and a corrugated core plate arranged between the front panel and the intermediate shell, a connecting rod is arranged between the outer wall of the crossbeam and the inner wall of the intermediate shell, and sliding seats are hinged at both ends of the connecting rod, the sliding seat connected to one end of the connecting rod slides linearly on the inner wall of the intermediate shell, and the sliding seat connected to the other end of the connecting rod slides linearly on the outer wall of the crossbeam, and elastic members are connected between two adjacent sliding seats;

[0004] There are technical problems in the above-mentioned prior art: although the existing anti-collision beam can play an impact buffering role through multiple buffer structures when in use, it is not convenient to play a fire retardant measure after being hit from a distance. When the car is hit with a large force, it is easy to cause short circuit damage to various circuits or modules inside the car. When the circuit and other components are damaged, the car is prone to catch fire.

[0005] Therefore, we propose a multi-stage crumple energy-absorbing front crossbeam for automobiles in order to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of the utility model is to provide a multi-stage crumple energy-absorbing automobile front cross beam to solve the problem raised by the above-mentioned background technology that the existing anti-collision beams on the market can play an impact buffering role through multiple buffer structures when in use, but are not convenient to play a fire retardant measure after being hit from a distance. When the car is hit with a large force, it is easy to cause short circuit damage to various circuits or modules inside the car, and when the circuit and other components are damaged, the car is prone to natural fire.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-stage crumple energy-absorbing front cross beam of an automobile, comprising an anti-collision beam body, guide columns are installed at the left and right ends of the anti-collision beam body, and one end of the guide column extends into the interior of the energy-absorbing column, and the other end of the guide column is fixed to the anti-collision beam body, and the upper and lower surfaces of the energy-absorbing column are evenly distributed with connecting grooves, and the interior of the energy-absorbing column is connected to each other through a sleeve spring and the end of the guide column;

[0008] Also includes:

[0009] An air storage bag is located between one end of the guide column extending into the interior of the energy absorbing column and the buffer plate, the buffer plate is connected to the interior of the energy absorbing column through a booster spring, the air storage bag is connected to the guide rod through a delivery pipe, and a vortex spring is sleeved on the outer side of the guide rod, and the vortex spring provides a restoring and rotating elastic force for the guide rod;

[0010] A movable plate is fixed to one end of the guide rod extending outward from the energy absorbing column, and an air outlet is provided on the movable plate;

[0011] A pull rope, used to connect the guide rod and the inner wall of the energy absorbing column, a cutting blade is installed on the side of the pull rope, and the cutting blade is fixed on the buffer plate;

[0012] A support block is fixed on the side of the energy absorbing column facing the inside of the vehicle body. A sealing rubber pad is installed on the support block, and the sealing rubber pad is used to seal and block the air outlet on the movable plate in the initial state.

[0013] Preferably, the outer wall of one end of the guide column extending into the interior of the energy absorbing column and the inner wall of the energy absorbing column fit each other, and the guide column forms an elastic telescopic structure by sleeve-connecting the spring and the energy absorbing column.

[0014] By adopting the above technical solution, after the guide column moves inside the energy absorbing column, the elastic deformation of the sleeve spring plays a buffering role.

[0015] Preferably, the air storage bag is made of elastic rubber material, and the interior of the air storage bag is filled with flame-retardant inert gas.

[0016] By adopting the above technical solution, when the air storage bag is subjected to pressure, it can also play a buffering role through its own elasticity, and at the same time, it can play a flame retardant protection role by utilizing the ejection of the air flow inside the air storage bag.

[0017] Preferably, the buffer plate and the cutting blade are vertically distributed, and the outer wall of the buffer plate and the inner wall of the energy absorbing column are in contact with each other, and the buffer plate and the energy absorbing column are slidably connected.

[0018] By adopting the above technical solution, when the buffer plate moves inside the energy absorbing column, it can drive the cutting blade thereon to move synchronously.

[0019] Preferably, the end joint of the conveying pipe is connected to the middle part of the guide rod by a bearing, and the guide rod can rotate on the energy absorbing column.

[0020] By adopting the above technical solution, the spraying range of the flame retardant inert gas can be conveniently increased by rotating the guide rod on the energy absorbing column.

[0021] Preferably, the interiors of the guide rod and the movable disk are both configured as hollow structures, and the interiors of the guide rod and the movable disk are interconnected.

[0022] By adopting the above technical solution, when the gas enters the interior of the guide rod, the gas can enter the interior of the movable disk.

[0023] Preferably, the air outlet holes are eccentrically arranged on the side of the movable disk, and the air outlet holes on the movable disk are tightly fitted with the sealing rubber pad in an initial state.

[0024] By adopting the above technical solution, the airflow inside the movable disk will not flow out through the air outlet hole by utilizing the close fit between the sealing rubber pad and the air outlet hole.

[0025] Compared with the prior art, the utility model has the following beneficial effects: the multi-stage crush energy absorbing front cross beam of the automobile can play a multi-stage buffering and protective role when subjected to a severe impact during use, and can also play a flame retardant and protective role, thereby preventing the automobile from spontaneously igniting due to excessive impact force;

[0026] 1. A guide column is provided. When the anti-collision beam is hit, the guide column can move inside the energy-absorbing column after being subjected to force. After the guide column moves, the elastic deformation of the sleeve spring can be used to buffer and absorb energy. At the same time, after the guide column moves under force, it can squeeze the air storage bag, and the deformation of the air storage bag after being compressed can also play a buffering role. When the air storage bag is deformed to a certain extent, it can push the buffer plate to move inside the energy-absorbing column. After the buffer plate moves, the elastic deformation of the booster spring can once again play a buffering role, and the damage caused by the impact force can be reduced through multiple energy absorption buffering.

[0027] 2. A cutting blade is provided. When the impact force is large, the buffer plate is pushed and can drive the cutting blade to cut off the draw rope. At this time, the guide rod loses the pulling force of the draw rope and resets and reverses under the action of the vortex spring. When the guide rod reverses, it can drive the movable disk to rotate synchronously. When the air outlet on the movable disk and the sealing pad on the supporting baffle are detached during the rotation of the movable disk, the flame-retardant airflow inside the air storage bag enters the movable disk through the delivery pipe and is sprayed toward the inner side of the vehicle body through the air outlet. The sprayed airflow plays a flame-retardant protection role. At the same time, the movable disk sprays air during the rotation process, so when the air is sprayed through the air outlet, it can spray toward different positions to increase the spray range. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the front three-dimensional structure of the utility model;

[0029] Figure 2 This is a schematic diagram of the exploded structure of the guide column and the energy absorbing column of the utility model;

[0030] Figure 3 It is a schematic diagram of the cutaway three-dimensional structure of the energy absorbing column and the air storage bag of the utility model;

[0031] Figure 4 This is a schematic diagram of the three-dimensional structure of the buffer plate and cutting blade of the utility model;

[0032] Figure 5 This is a schematic diagram of the exploded structure of the guide rod and vortex spring of the utility model.

[0033] In the figure: 1. anti-collision beam; 2. guide column; 3. energy absorption column; 4. connecting groove; 5. sleeve spring; 6. air storage bag; 7. buffer plate; 8. booster spring; 9. delivery pipe; 10. guide rod; 11. vortex spring; 12. movable plate; 13. air outlet; 14. pull rope; 15. cutting blade; 16. support block; 17. sealing pad. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0035] See also Figure 1-5 The utility model provides a technical solution: a multi-stage crumple energy-absorbing front cross beam of a car, comprising an anti-collision beam body 1, guide columns 2 are installed at the left and right ends of the anti-collision beam body 1, and one end of the guide column 2 extends into the interior of the energy-absorbing column 3, and the other end of the guide column 2 is fixed on the anti-collision beam body 1, and connecting grooves 4 are evenly distributed on the upper and lower surfaces of the energy-absorbing column 3, and the interior of the energy-absorbing column 3 is connected to each other through a sleeve spring 5 and the end of the guide column 2; an air storage bag 6 is installed between the end of the guide column 2 extending into the interior of the energy-absorbing column 3 and the buffer plate 7, and the buffer plate 7 is connected to the interior of the energy-absorbing column 3 through a booster spring 8, and the outer wall of the end of the guide column 2 extending into the interior of the energy-absorbing column 3 and the inner wall of the energy-absorbing column 3 are in contact with each other, and the guide column 2 forms an elastic telescopic structure through the sleeve spring 5 and the energy-absorbing column 3. The air storage bag 6 is set to be made of elastic rubber material;

[0036] like Figure 1-3As shown, when the anti-collision beam 1 is hit during the driving of the vehicle, the guide column 2 on the side of the anti-collision beam 1 moves inside the energy absorbing column 3 after the force is applied to the anti-collision beam 1. The movement of the guide column 2 can utilize the sleeve spring 5 to achieve a primary elastic energy absorption effect. After the guide column 2 moves, it can squeeze the air bag 6, and achieve a secondary elastic energy absorption effect through the elastic deformation of the air bag 6 itself. At the same time, in the initial state, the air outlet 13 on the side of the movable plate 12 is blocked by the sealing pad 17. At this time, the internal airflow of the air bag 6 will not leak out after being squeezed. After the air bag 6 is deformed to the limit, the guide column 2 can push the buffer plate 7 to move inside the energy absorbing column 3 after moving. After the buffer plate 7 moves, the elastic deformation of the booster spring 8 can achieve a second buffering and energy absorption effect. Therefore, the damage caused by the collision can be reduced through multiple energy absorption and buffering.

[0037] The air storage bag 6 is connected to the guide rod 10 through the delivery pipe 9, and the outer side of the guide rod 10 is sleeved with a vortex spring 11, which provides the guide rod 10 with a reset rotation elastic force through the vortex spring 11; the movable disk 12 is fixed to the end of the guide rod 10 extending out of the energy absorption column 3, and the movable disk 12 is provided with an air outlet 13; the pull rope 14 is used to connect the guide rod 10 and the inner wall of the energy absorption column 3, and the side of the pull rope 14 is installed with a cutting blade 15, and the cutting blade 15 is fixed on the buffer plate 7; the support block 16 is fixed to the side of the energy absorption column 3 facing the inside of the vehicle body, and the support block 16 is installed with a sealing pad 17, which is used to seal and block the air outlet 13 on the movable disk 12 in the initial state. The air storage bag 6 is filled with flame-retardant inert gas. The buffer plate 7 and the cutting blade 15 are vertically distributed, and the outer wall of the buffer plate 7 and the inner wall of the energy absorbing column 3 fit each other, and the buffer plate 7 and the energy absorbing column 3 are slidably connected. The end joint of the conveying pipe 9 is connected to the middle of the guide rod 10 by a bearing, and the guide rod 10 can rotate on the energy absorbing column 3. The interior of the guide rod 10 and the movable disk 12 are both set as hollow structures, and the interiors of the guide rod 10 and the movable disk 12 are connected to each other. The air outlet 13 is eccentrically arranged on the side of the movable disk 12, and the air outlet 13 on the movable disk 12 is tightly fitted with the sealing pad 17 in the initial state.

[0038] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, when the impact force is too great, the buffer plate 7 can drive the cutting blade 15 on the side to move synchronously after it moves, and the movement of the cutting blade 15 can cut off the pull rope 14 inside the energy absorbing column 3. At this time, after the guide rod 10 loses the pulling force of the pull rope 14, the guide rod 10 resets and reverses under the action of the vortex spring 11, and can drive the movable disk 12 to rotate synchronously when the guide rod 10 reverses. When the movable disk 12 rotates, the air outlet 13 on its side and the sealing rubber pad 17 on the support block 16 are separated from each other, and the flame-retardant gas inside the air storage bag 6 is discharged outwardly through the delivery pipe 9, the guide rod 10 and the air outlet 13 on the side of the movable disk 12. The flame-retardant gas sprayed toward the inner side of the vehicle body through the air outlet 13 can reduce the risk of spontaneous combustion of the vehicle after the collision, and the movable disk 12 sprays outward when rotating, so that the air outlet 13 on the movable disk 12 can spray toward different positions, thereby increasing the outward spray range of the air outlet 13.

[0039] Working principle: When using the multi-stage crumple energy absorbing front cross beam of the car, firstly according to Figure 1-5 As shown, after the anti-collision beam body 1 is subjected to force, the guide column 2 on its side moves inside the energy absorbing column 3. The movement of the guide column 2 can utilize the sleeve spring 5 to achieve a primary elastic energy absorption effect, and the elastic deformation of the air storage bag 6 itself can achieve a secondary elastic energy absorption effect. After the air storage bag 6 is deformed to the limit, the guide column 2 can move to push the buffer plate 7 to move inside the energy absorbing column 3. After the buffer plate 7 moves, the elastic deformation of the booster spring 8 can achieve a second buffering and energy absorption effect. Therefore, multiple energy absorption and buffering can reduce the damage caused by the collision. The movement of the cutting blade 15 can cut off the pull rope 14 inside the energy absorbing column 3. When the air outlet 13 on the side of the movable disk 12 is separated from the sealing pad 17 on the supporting block 16 during the rotation of the movable disk 12, the flame-retardant gas inside the air storage bag 6 is discharged outwardly through the air outlet 13. The flame-retardant gas sprayed toward the inner side of the vehicle body through the air outlet 13 can reduce the risk of spontaneous combustion after the vehicle impact. The movable disk 12 sprays outward when rotating, so that the air outlet 13 on the movable disk 12 can spray toward different positions, thereby increasing the outward spray range of the air outlet 13.

[0040] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-stage crush energy absorption front cross beam for an automobile, comprising an anti-collision beam body (1), guide columns (2) being installed at both left and right ends of the anti-collision beam body (1), one end of the guide column (2) extending into the interior of an energy absorption column (3), the other end of the guide column (2) being fixed to the anti-collision beam body (1), connecting grooves (4) being evenly distributed on the upper and lower surfaces of the energy absorption column (3), and the interior of the energy absorption column (3) being connected to the end of the guide column (2) via a sleeve spring (5); It is characterized in that Also includes: An air storage bag (6) is located between one end of the guide column (2) extending into the interior of the energy absorbing column (3) and the buffer plate (7); the buffer plate (7) is connected to the interior of the energy absorbing column (3) via a booster spring (8); the air storage bag (6) is connected to the guide rod (10) via a delivery pipe (9); and a vortex spring (11) is sleeved on the outer side of the guide rod (10); the vortex spring (11) provides a return rotation elastic force for the guide rod (10); A movable plate (12) is fixed to one end of the guide rod (10) extending outside the energy absorbing column (3), and an air outlet hole (13) is provided on the movable plate (12); A pull rope (14) is used to connect the guide rod (10) and the inner wall of the energy absorbing column (3), a cutting blade (15) is installed on the side of the pull rope (14), and the cutting blade (15) is fixed on the buffer plate (7); A support block (16) is fixed on a side of the energy absorbing column (3) facing the inside of the vehicle body, and a sealing rubber pad (17) is installed on the support block (16). The sealing rubber pad (17) is used to seal and block the air outlet hole (13) on the movable plate (12) in an initial state.

2. The multi-stage crush energy absorbing front cross beam of an automobile according to claim 1, characterized in that: The outer wall of one end of the guide column (2) extending into the interior of the energy absorbing column (3) and the inner wall of the energy absorbing column (3) fit together, and the guide column (2) forms an elastic telescopic structure by sleeve-connecting the spring (5) and the energy absorbing column (3).

3. The multi-stage crush energy absorbing front cross beam of an automobile according to claim 1, characterized in that: The air storage bag (6) is made of an elastic rubber material, and the interior of the air storage bag (6) is filled with a flame-retardant inert gas.

4. The multi-stage crush energy absorbing front cross beam of an automobile according to claim 1, characterized in that: The buffer plate (7) and the cutting blade (15) are vertically distributed, and the outer wall of the buffer plate (7) and the inner wall of the energy absorbing column (3) are in contact with each other, and the buffer plate (7) and the energy absorbing column (3) are slidably connected.

5. The multi-stage crush energy absorbing front cross beam of an automobile according to claim 1, characterized in that: The end joint of the delivery pipe (9) is connected to the middle part of the guide rod (10) via a bearing, and the guide rod (10) is capable of rotating on the energy absorbing column (3).

6. The multi-stage crush energy absorbing front cross beam of an automobile according to claim 1, characterized in that: The interiors of the guide rod (10) and the movable disk (12) are both configured as hollow structures, and the interiors of the guide rod (10) and the movable disk (12) are interconnected.

7. The multi-stage crush energy absorbing front cross beam of an automobile according to claim 1, characterized in that: The air outlet hole (13) is eccentrically arranged on the side of the movable disk (12), and the air outlet hole (13) on the movable disk (12) is tightly fitted with the sealing rubber pad (17) in an initial state.

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