A new energy vehicle frame and door with energy-absorbing self-restoring safety structure

Abstract

The present invention discloses a new energy vehicle frame and door adopting an energy-absorbing self-restoring safety structure, including a frame body and an energy-absorbing self-restoring safety structure, the energy-absorbing self-restoring safety structure including a thin-walled corrugated disk, a mounting plate, an air inlet, a gas overflow valve and an air charging port, the mounting plate is fixedly connected to the large end of the conical shell-shaped thin-walled corrugated disk to form an airtight cavity, the air charging port is connected to the airtight cavity through the air inlet for inflation, the air charging port is provided with a gas overflow valve for discharging gas when the gas pressure in the airtight cavity reaches a threshold value, when the thin-walled corrugated disk is subjected to force, the thin-walled corrugated disk is compressed and deformed to absorb energy; when the force disappears, the thin-walled corrugated disk is inflated from the air charging port to restore its shape. When subjected to force, the internal gas and the outer shell of the thin-walled corrugated disk absorb energy at the same time, thereby improving the bearing capacity of the overall structure, so that it maintains the stability and continuity of energy absorption, and has high bearing capacity and good stability. In addition, the corrugated disk structure is recoverable and reusable, thereby reducing the maintenance cost of the automobile.

Description

Technical Field

[0001] The invention relates to a passive safety device for an automobile, and in particular to a frame and a door of a new energy automobile adopting an energy-absorbing self-restoring safety structure. Background Art

[0002] At present, when a car is driving, it may be hit due to improper operation by itself or others. The severity of a side collision of a vehicle often depends on the side structure and equipment of the vehicle. Among them, the frame is the structural basis of the car and is equipped with various power structures. The safety of the frame is crucial in a collision. In addition, the door is the part of the car body that directly contacts the occupants in a side collision accident. The safety structure of the door plays an important protective role in side collisions, which can not only reduce the damage to the driver and passengers, but also reduce the property loss caused by the accident. However, the existing frames and doors have not fully considered the complex influence of various factors, resulting in insufficient side collision protection performance of the doors for the occupants, and the existing energy absorption mechanism is a one-time collapse structure, which needs to be replaced after use, and the maintenance cost is high. Summary of the invention

[0003] Purpose of the invention: In view of the above shortcomings, the present invention provides a new energy vehicle frame with an energy-absorbing self-restoring safety structure, which has high energy absorption efficiency and reduces maintenance costs.

[0004] The present invention also provides a new energy vehicle door adopting an energy-absorbing self-restoring safety structure.

[0005] Technical solution: To solve the above problems, the present invention adopts a new energy vehicle frame with an energy-absorbing self-restoring safety structure, including a frame body and an energy-absorbing self-restoring safety structure arranged on the frame body, the frame body includes a main frame, a front sub-frame located at the front end of the main frame and a rear sub-frame located at the rear end of the main frame, the front end of the front sub-frame, the rear end of the rear sub-frame and both sides of the main frame are all provided with energy-absorbing self-restoring safety structures, the energy-absorbing self-restoring safety structure includes a thin-walled corrugated disk, a mounting plate, an air inlet, a gas overflow valve and an air charging port, the thin-walled corrugated disk is made of high-elasticity and high-strength metal material, and the initial state is an unfolded Cone shell type, the mounting plate is fixedly connected to the large end of the cone shell type thin-walled corrugated disk, an airtight cavity is formed inside the mounting plate and the thin-walled corrugated disk, the inflation port is connected to the airtight cavity through the air inlet, and air is inflated into the airtight cavity through the inflation port, and a gas overflow valve is provided at the inflation port to discharge gas when the gas pressure in the airtight cavity reaches a threshold value, when a vehicle collides with the large end and the small end of the cone shell type thin-walled corrugated disk and is subjected to force, the thin-walled corrugated disk is compressed and deformed to absorb energy, and at the same time, the internal gas volume is reduced to absorb energy; when the force on the large end and the small end of the compressed and deformed thin-walled corrugated disk disappears, the thin-walled corrugated disk is inflated from the inflation port to restore its shape.

[0006] Furthermore, the frame also includes an anti-collision plate, and the energy-absorbing self-restoring safety structure is located between the anti-collision plate and the frame body. A plurality of thin-walled corrugated disks are arranged between the anti-collision plate and the frame body, and each thin-walled corrugated disk forms an airtight cavity by connecting the mounting plate, and the airtight cavities of the plurality of thin-walled corrugated disks are connected by connecting airways.

[0007] Furthermore, one of the thin-walled corrugated disks is connected to at least two connecting air passages, and every two thin-walled corrugated disks are connected via one connecting air passage.

[0008] Furthermore, the thin-walled corrugated disk is integrally plastic-formed with a high-elasticity and high-strength metal material. The wave crest and wave trough sections of the thin-walled corrugated disk are plastic deformation zones, and the slope section is an elastic deformation zone. The unfolded state of the thin-walled corrugated disk is a flat-topped cone shell type, and the contracted state at the compression limit is a disc type. The high-elasticity and high-strength material includes titanium alloy material, stainless steel material, high-strength steel material and high-temperature alloy material.

[0009] Furthermore, the initial peak force of the energy-absorbing self-restoring safety structure is adjusted by changing the overflow pressure of the gas overflow valve.

[0010] The present invention also adopts a new energy vehicle door adopting an energy-absorbing self-restoring safety structure, including a door outer panel and a door inner panel, and the above-mentioned energy-absorbing self-restoring safety structure is fixedly arranged between the door outer panel and the door inner panel.

[0011] Furthermore, a plurality of thin-walled corrugated disks are distributed in an array on the inner wall of the door outer panel and are connected to each other through connecting air passages.

[0012] Furthermore, the mounting plate is provided with a plurality of mounting holes, and screws are screwed into the mounting holes to fix the mounting plate to the outer panel of the vehicle door.

[0013] Furthermore, the connecting air duct adapts to the curvature of the door structure.

[0014] The thin-walled corrugated disc structure is an airtight cavity. While the gas absorbs part of the energy, the shell also absorbs part of the energy, improving the bearing capacity of the overall structure, so that it maintains the stability and continuity of energy absorption, with high bearing capacity and good stability. In addition, the corrugated disc structure is recoverable and reusable, reducing the maintenance cost of new energy vehicles. By optimizing the structure of the door that is in direct contact with the occupants when the vehicle is in a side collision, the side collision safety of the occupants is guaranteed to the maximum extent.

[0015] Specifically, the corrugated disc is a disc-shaped structure with multiple layers of corrugated shapes, which is plastically formed as a whole from high-elasticity and high-strength metal materials such as titanium alloy, stainless steel, high-strength steel, and high-temperature alloy. These alloys have strong elastic deformation capabilities at room temperature, which can effectively improve the bearing capacity of the side impact safety structure. At the same time, the corrugated structure changes to a contracted state under the action of positive pressure, and the deformation of the structure itself and the gas in the structure absorb energy at the same time, giving the structure a higher energy absorption effect; and it has the characteristic of returning to its original state through inflation after deformation. This is mainly because when the internal pressure changes, the corrugated disc structure will undergo a mutual transition between the contraction and expansion states, thereby realizing the deformation recovery of the structure.

[0016] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages:

[0017] The energy absorption property is excellent. Different from the energy absorption principle of ordinary energy absorption structures, the energy absorption structure proposed by the present invention absorbs energy simultaneously with the structure itself and the gas inside the structure, thereby improving the carrying capacity while improving energy absorption, so that the stability and continuity of energy absorption are maintained, and the collision resistance of new energy vehicles is improved.

[0018] Reusable, reducing the maintenance cost of new energy vehicles. The structure adopted by the present invention is a structure with two states of contraction and expansion that can be transformed into each other. It can automatically restore to its original shape under a certain air pressure. Due to this characteristic, after the present invention absorbs energy and deforms, it can be inflated to restore its original shape and can be reused, thereby reducing the maintenance cost of new energy vehicles. When the door of a new energy vehicle is dented by a certain degree of collision, the shape of the door can be quickly restored by inflating a thin-walled corrugated disk through the inflation port.

[0019] Easy to adjust the initial peak force. A gas overflow valve is provided on the connecting airway. By changing the overflow pressure, the initial peak force can be effectively adjusted, ensuring the versatility in different use processes and effectively ensuring the personal safety of passengers. The collision energy absorption effect under different use environments can also be achieved by adjusting the air pressure of the corrugated disk connected overflow valve.

[0020] High load-bearing capacity and good stability. Titanium alloy is an alloy composed of multiple elements. Due to its high elasticity, it can effectively improve the load-bearing capacity of the corrugated disk and improve the load-bearing stability of the corrugated disk.

[0021] Plastic forming is a process that uses the plasticity of materials to process parts with less or no cutting under the external force of tools and molds. Plastic forming has better mechanical properties than castings of the same material; no cutting, less metal loss; suitable for specialized large-scale production, and suitable for the new requirements of the development of green manufacturing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the energy-absorbing self-restoring safety structure in the present invention.

[0023] Figure 2 It is a schematic diagram of the overall structure of the thin-wall corrugated disk unit structure in the present invention.

[0024] Figure 3 It is a cross-sectional view of the thin-wall corrugated disk unit structure in the present invention.

[0025] Figure 4 It is a schematic diagram of the overall structure of the frame installation safety structure in the present invention.

[0026] Figure 5 It is a side view of the vehicle frame installation safety structure in the present invention.

[0027] Figure 6 It is a schematic diagram of the overall structure of the thin-walled corrugated disk unit structure connected to the air inlet on the frame of the present invention.

[0028] Figure 7 It is a schematic diagram of the compression and deployment process of the safety structure on the frame of the present invention.

[0029] Figure 8 The figure is a three-dimensional exploded view of the installation of the safety door in the present invention.

[0030] Fig. 9 It is a front view of the vehicle door outer panel installation safety structure in the present invention.

[0031] Fig.10 It is a side view of the vehicle door outer panel installation safety structure in the present invention.

[0032] Fig.11 It is a schematic diagram of the overall structure of the thin-walled corrugated disk unit structure connected to the air inlet on the door outer panel in the present invention.

[0033] Fig.12 It is a cross-sectional view of the connection between the thin-wall corrugated disk and the door outer panel in the present invention.

[0034] Fig.13 It is a schematic diagram of the partial contraction of the thin-walled corrugated disk unit structure after being compressed in the present invention.

[0035] Fig.14 It is a cross-sectional view of the thin-walled corrugated disk unit structure of the present invention after being fully compressed.

[0036] Fig.15 It is a cross-sectional view of a part of the thin-wall corrugated disk unit structure after being inflated in the present invention.

[0037] Fig.16 It is a cross-sectional view of the thin-walled corrugated disk unit structure of the present invention when it is fully expanded after being inflated. DETAILED DESCRIPTION

[0038] like Figures 1 to 7 As shown, in this embodiment, a new energy vehicle frame adopts an energy absorbing self-restoring safety structure, such as Figures 1 to 3 As shown, the energy absorption self-restoring safety structure includes several connected thin-walled corrugated disk unit structures 10, an air inlet 11, a gas overflow valve 4 and an inflation port 5. The thin-walled corrugated disk unit structure 10 includes a thin-walled corrugated disk 1, a mounting plate 2 and several connecting air channels 3 connected thereto; the mounting plate 2 is fixedly provided at the large end of the bottom of the thin-walled corrugated disk 1, and the mounting plate 2 and the inside of the thin-walled corrugated disk 1 form an airtight cavity, and the side of the thin-walled corrugated disk 1 is connected to several connecting air channels 3, and the connecting air channels 3 are connected to the airtight cavity. The air inlet 11 is connected to one of the thin-walled corrugated disk unit structures 10, one end of the air inlet is connected to the airtight cavity inside the thin-walled corrugated disk 1, and a gas overflow valve 4 is provided at the other end, and the outlet of the gas overflow valve 4 is connected to the inflation port 5, and the inflation port 5 is connected to the atmosphere.

[0039] like Figures 4 to 6 As shown, the new energy vehicle frame includes a frame body, an anti-collision plate 15 and an energy-absorbing self-restoring safety structure arranged on the frame body. The frame body includes a main frame, a front sub-frame located at the front end of the main frame and a rear sub-frame located at the rear end of the main frame. The front end of the front sub-frame, the rear end of the rear sub-frame and both sides of the main frame are provided with energy-absorbing self-restoring safety structures. A plurality of mounting holes 21 are provided on the mounting plate 2, and the thin-walled corrugated disk unit structure 10 is detachably connected to the frame body through the mounting holes 21. The fixing screw 8 is used to connect the thin-walled corrugated disk unit structure 10 and the frame body into one. The small end of the thin-walled corrugated disk is fixedly connected to the anti-collision plate 15.

[0040] When a vehicle collides, the force is transferred from the anti-collision plate to the thin-walled corrugated disk unit structure 10, and finally to the frame body. The thin-walled corrugated disk unit structure 10 can absorb the energy of the vehicle collision. And part of the energy is transferred from the thin-walled corrugated disk 10 to the gas in the thin-walled corrugated disk 10, and the gas is discharged along the connecting air channel 3, through the air inlet 11, the gas overflow valve 4, and the charging port 5, releasing energy.

[0041] By optimizing the structure of the main frame, front subframe and rear subframe when the vehicle collides, the collision safety of the passengers is guaranteed to the maximum extent and the maintenance cost is reduced. On the one hand, by arranging the thin-walled corrugated disc unit structure 10, such a structure can absorb the energy of the vehicle side collision to the maximum extent and reduce the force when the frame is deformed. On the other hand, Figure 7 As shown, the thin-wall corrugated disk unit structure 10 also has a good recoverability effect, is convenient for repeated use, and reduces the maintenance cost of the car.

[0042] like Figures 8 to 12As shown, the new energy vehicle door includes a door outer panel 6 and a door inner panel 7, and an energy absorbing self-restoring safety structure is fixedly arranged in the interlayer between the door outer panel 6 and the door inner panel 7. A plurality of mounting holes 21 are arranged on the mounting plate 2, and the thin-walled corrugated disk unit structure 10 is detachably connected to the inner wall of the vehicle door outer panel 6 through the mounting holes 21. The fixing screw 8 is used to connect the thin-walled corrugated disk unit structure 10 and the door outer panel 6 into one body.

[0043] The doors of new energy vehicles include doors connected to the left and right sides of the vehicle body. The side impact safety of the passengers is ensured by designing the doors for side impact.

[0044] like Figures 9 to 12 As shown, the door of the new energy vehicle includes a fixed door outer panel 6 and a door inner panel 7, and several thin-walled corrugated disc unit structures 10 are fixed on the inner wall of the door outer panel 6. When the vehicle is hit from the side, it can collide with the door inner panel 7 area to absorb energy, effectively reducing the side impact of the occupants. The gap arrangement between the thin-walled corrugated disc unit structures 10 also increases the uniformity of the door's anti-collision energy absorption. When the vehicle is hit from the side or hit from the side, the force is transferred from the door outer panel 6 to the thin-walled corrugated disc unit structure 10, and finally to the vehicle personnel. The thin-walled corrugated disc unit structure 10 can absorb the energy when the vehicle is hit from the side. The high-elasticity and high-strength metal material structure such as titanium alloy, stainless steel, high-strength steel, and high-temperature alloy itself deforms and absorbs energy at the same time as the gas in the structure, giving the structure a higher energy absorption effect. And part of the energy is transmitted from the thin-walled corrugated disc 1 to the gas in the thin-walled corrugated disc 1, and the gas is discharged along the connecting airway 3 through the air inlet 11, the gas overflow valve 4, and the inflation port 5 to release energy.

[0045] like Figures 13 to 16 As shown, the working principle and process of the energy-absorbing self-restoring safety structure are as follows: when in use, when a car collides, the thin-walled corrugated disk 1 is compressed and deformed, and the internal gas absorbs energy by reducing the volume, reducing the initial peak force and reducing the damage to the passengers; after the collision, the plastic deformation of the thin-walled corrugated disk 1 ends, the internal gas volume pressure is restored, and part of the energy is released; it is inflated through the inflation port 5 to restore it to its original state, thereby achieving reuse. The advantages of the deployable thin-walled structure and the inflatable structure are fully combined. The cross-section of the thin-walled shell of the thin-walled corrugated disk 1 is a corrugated type, which can effectively reduce the initial peak force. It not only has the best comprehensive performance and reduces the damage to the passengers, but also the corrugated disk can effectively restore its original state to ensure the reusability of the structure.

[0046] By optimizing the structure of the door that is in direct contact with the occupants when the vehicle is in a side collision, the side collision safety of the occupants is guaranteed to the maximum extent and the maintenance cost is reduced. On the one hand, by arranging the thin-walled corrugated disk unit structure 10, such a structure can absorb the energy of the vehicle side collision to the maximum extent and reduce the force when the human body contacts the door. On the other hand, the thin-walled corrugated disk unit structure 10 also has a good recovery effect, is convenient for repeated use, and reduces the maintenance cost of the car.

Claims

1. A new energy vehicle frame adopting an energy-absorbing self-restoring safety structure, characterized in that: The invention comprises a frame body and an energy-absorbing self-restoring safety structure arranged on the frame body, wherein the frame body comprises a main frame, a front sub-frame located at the front end of the main frame, and a rear sub-frame located at the rear end of the main frame, and the front end of the front sub-frame, the rear end of the rear sub-frame, and both sides of the main frame are all provided with the energy-absorbing self-restoring safety structure, and the energy-absorbing self-restoring safety structure comprises a thin-walled corrugated disk (1), a mounting plate (2), an air intake duct (11), a gas overflow valve (4), and an air charging port (5), wherein the thin-walled corrugated disk (1) is made of a high-elasticity and high-strength metal material, and is in an unfolded cone shell shape in its initial state, and the mounting plate (2) is fixedly connected to the cone shell-shaped thin-walled corrugated disk (1) The large end of the mounting plate (2) and the thin-walled corrugated disk (1) form an airtight cavity inside, the inflation port (5) is connected to the airtight cavity through the air inlet (11), and the airtight cavity is inflated through the inflation port. The inflation port (5) is provided with a gas overflow valve (4) for discharging gas when the gas pressure in the airtight cavity reaches a threshold value. When a vehicle collides with the large end and the small end of the cone shell type thin-walled corrugated disk (1), the thin-walled corrugated disk (1) is compressed and deformed to absorb energy, and the internal gas volume is reduced to absorb energy; when the force on the large end and the small end of the compressed and deformed thin-walled corrugated disk (1) disappears, the thin-walled corrugated disk (1) is inflated from the inflation port to restore its shape.

2. The new energy vehicle frame adopting the energy absorbing self-restoring safety structure according to claim 1 is characterized in that: The vehicle also comprises an anti-collision plate (15), wherein the energy absorbing self-restoring safety structure is located between the anti-collision plate (15) and the vehicle frame body, and a plurality of thin-walled corrugated disks (1) are arranged between the anti-collision plate (15) and the vehicle frame body, each thin-walled corrugated disk forms an airtight cavity by connecting the mounting plate (2), and the airtight cavities of the plurality of thin-walled corrugated disks (1) are connected by connecting air passages (3).

3. The new energy vehicle frame adopting the energy absorbing self-restoring safety structure according to claim 1 is characterized in that: One of the thin-walled corrugated disks (1) is connected to at least two connecting air passages (3), and every two thin-walled corrugated disks (1) are connected via one connecting air passage (3).

4. The new energy vehicle frame adopting the energy absorbing self-restoring safety structure according to claim 3 is characterized in that: The thin-walled corrugated disk (1) is integrally plastically formed of a high-elasticity and high-strength metal material; the wave crests and wave troughs of the thin-walled corrugated disk (1) are plastic deformation zones, and the slope zone is an elastic deformation zone; the thin-walled corrugated disk (1) is in a flat-topped cone shell shape in an expanded state, and in a compressed state at the limit of compression, is in a disc shape.

5. The new energy vehicle frame adopting the energy absorbing self-restoring safety structure according to claim 4 is characterized in that: The high-elasticity and high-strength materials include titanium alloy materials, stainless steel materials, high-strength steel materials and high-temperature alloy materials.

6. The new energy vehicle frame adopting the energy absorbing self-restoring safety structure according to claim 1 is characterized in that: The initial peak force of the energy-absorbing self-restoring safety structure is adjusted by changing the overflow pressure of the gas overflow valve (4).

7. A new energy vehicle door adopting an energy absorbing self-restoring safety structure, comprising a door outer panel (6) and a door inner panel (7), characterized in that: The energy absorbing self-restoring safety structure according to any one of claims 1 to 6 is fixedly arranged between the vehicle door outer panel (6) and the vehicle door inner panel (7).

8. The new energy vehicle door with energy absorption self-restoring safety structure according to claim 7 is characterized in that: A plurality of thin-wall corrugated discs (1) are distributed in an array on the inner wall of a vehicle door outer panel (6) and are connected to each other via connecting air passages.

9. The new energy vehicle door with energy absorption self-restoring safety structure according to claim 8 is characterized in that: The mounting plate (2) is provided with a plurality of mounting holes (21), and fixing screws (8) are screwed into the mounting holes (21) to fix the mounting plate (2) to the vehicle door outer panel (6).

10. The new energy vehicle door with energy absorption self-restoring safety structure according to claim 8 is characterized in that: The connecting air channel (3) adapts to the bending of the vehicle door structure.

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