A new energy automobile front longitudinal beam front support connecting structure

Abstract

This invention discloses a front longitudinal beam support connection structure for new energy vehicles, including a load-relieving component, an anti-loosening component, and a strength control component. The load-relieving component includes a metal membrane, a load-relieving hole, a support box, and a device housing. The load-relieving hole is located on the side wall of the support box, and the metal membrane is fixedly connected inside the load-relieving hole. The upper surface of the support box is fixedly connected to the inner upper surface of the device housing, and the lower surface of the support box is fixedly connected to the inner lower surface of the device housing. By setting up the load-relieving component, when the vehicle is subjected to impact loads, after the energy-absorbing box is damaged, the load-relieving component allows the device to deform slowly through a throttling principle, thereby further absorbing the impact load and protecting the longitudinal beam behind the device, thus avoiding higher maintenance costs due to damage to the longitudinal beam.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle technology, and in particular to a front longitudinal beam front bracket connection structure for new energy vehicles. Background Technology

[0002] The front longitudinal beam and front bracket connection structure is the connecting part used to connect the front longitudinal beam and front bracket of a car. It is usually fixed together by bolts or welding.

[0003] Existing devices of this type have insufficient protection for the front longitudinal beam. For example, the vehicle body bracket, vehicle body bracket assembly, and electric vehicle with a fixed rear beam disclosed in Chinese Patent Publication No. CN113120085B use a fixed connection method for the entire device. In actual production, this is usually achieved through welding or threaded connections. However, when subjected to impact loads, this connection method will first damage the energy-absorbing box, and then the force will act directly on the front longitudinal beam, causing significant damage to the front longitudinal beam and increasing subsequent repair costs. Therefore, this application proposes a front longitudinal beam front bracket connection structure for new energy vehicles. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a front longitudinal beam and front bracket connection structure for new energy vehicles.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A front longitudinal beam front bracket connection structure for a new energy vehicle includes a load relief component, an anti-loosening component, and a strength control component. The load relief component includes a metal membrane, a load relief hole, a support box, and a device housing.

[0007] The unloading hole is opened on the side wall of the support box, the metal film is fixedly connected to the inside of the unloading hole, the upper surface of the support box is fixedly connected to the inner upper surface of the device housing, and the lower surface of the support box is fixedly connected to the inner lower surface of the device housing.

[0008] A flow tube is fixedly connected to the side wall of the support box, and a hydraulic bladder is fixedly connected to the end of the flow tube away from the support box. A flow hole is opened on the side wall of the support box, and the internal space of the flow hole is connected to the internal space of the flow tube. The flow tube is connected to the internal space of the hydraulic bladder.

[0009] Preferably, the anti-loosening component includes a connecting bolt, a limiting post, a limiting hole, a connecting nut, a cover plate, and a limiting ring;

[0010] The number of connecting bolts is several, the connecting nut is fixedly connected to the cover plate, and the number of limiting holes is several, which are evenly opened on the limiting ring and the connecting nut.

[0011] Preferably, the strength control component includes an angle limiting plate, a support plate, a transition plate, and a rotating shaft;

[0012] The support plate consists of multiple sets, with two support plates in each set. The two support plates are at a certain angle to each other, and an angle limiting plate is welded between the two support plates.

[0013] Preferably, the support plate is fixedly connected to the rotating shaft, the rotating shaft is rotatably connected to the adapter plate, and the end of the support plate away from the adapter plate is fixedly connected to the cover plate.

[0014] Preferably, the limiting post is fixedly connected in the cover plate, the limiting post and the limiting hole are fixedly connected by interference fit, and the connecting bolt is fixedly connected to the front longitudinal beam or the front bracket.

[0015] Preferably, the connecting nut is threadedly connected to the connecting bolt, the limiting ring is threadedly connected to the connecting bolt, and the limiting ring is also fixedly connected to the front bracket or the front longitudinal beam.

[0016] Preferably, the connecting bolt is fixedly connected to the front bracket or the front longitudinal beam, and the limiting post needs to pass through the front bracket or the front longitudinal beam and be fixedly connected with the limiting hole by interference fit;

[0017] The upper and lower surfaces of the hydraulic bladder are fixedly connected to the surface of the cover plate. The inlet end of the flow tube communicates with the internal space of the hydraulic bladder, and the outlet end of the flow tube communicates with the flow hole.

[0018] Preferably, the buffer assembly includes a buffer box, a plate, a connecting plate, a connecting plate, a spring, a damping plate, an energy-absorbing plate, a pressure ring, a connecting shaft, a front support assembly, an output rod, and a damping connecting plate.

[0019] The buffer box is fixedly connected to the side wall of the connecting plate, the plate is fixedly connected to the output rod, the connecting disc is threadedly connected to the connecting bolt, the connecting plate is fixedly connected to the side wall of the device housing, one end of the spring is fixedly connected to the inside of the buffer box, and the other end of the spring is fixedly connected to the energy-absorbing plate.

[0020] Preferably, the energy-absorbing plate is slidably and sealed to the buffer box, the energy-absorbing plate has micropores, the anti-collision beam is fixedly connected to the plate, both ends of the anti-collision beam are located in the damping connecting plate, the damping connecting plate is fixedly connected to the inside of the end of the front bracket assembly away from the connecting plate, the pressure ring is fixedly connected to the connecting shaft, and the connecting shaft is fixedly connected to both ends of the anti-collision beam.

[0021] The present invention has the following beneficial effects:

[0022] 1. By setting up a load relief component, when the energy absorption box is damaged when the vehicle is subjected to impact load, the load relief component allows the device to deform slowly through the throttling principle, thereby further absorbing the impact load and protecting the longitudinal beam behind the device, thus avoiding higher maintenance costs caused by damage to the longitudinal beam.

[0023] 2. By setting up a strength control component, the overall strength of the device can be controlled by adjusting the number of support plates and the angle between the two support plates during use, thereby controlling the overall support strength of the support plates and thus controlling the strength of the device when subjected to impact loads.

[0024] 3. By setting anti-loosening components, multiple limit pins can lock the position between the connecting nut and the limit ring through interference fit during use, thereby preventing the nut from loosening due to vibration during use.

[0025] 4. By setting up a buffer component, when this device is in use, the buffer component allows the anti-collision beam to absorb the impact force through the output rod of the buffer box when it is subjected to a low impact force, thereby preventing the force from being transmitted to the front longitudinal beam. When the impact force is large, the damping plate can clamp and lock the connecting shaft, thereby allowing the energy absorption box to work. At this time, the buffer component can offset part of the impact force to assist the work of the energy absorption box. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the front longitudinal beam and front bracket connection structure for a new energy vehicle proposed in this invention.

[0027] Figure 2 This is a schematic diagram showing the position of the front bracket in a front longitudinal beam front bracket connection structure for a new energy vehicle proposed in this invention.

[0028] Figure 3 This is a schematic diagram of the connecting plate of the front longitudinal beam front bracket connection structure for a new energy vehicle proposed in this invention;

[0029] Figure 4 This is a schematic diagram of the spring structure of the front longitudinal beam front bracket connection structure of a new energy vehicle proposed in this invention.

[0030] Figure 5 This is a schematic diagram of the damping plate of the front longitudinal beam front bracket connection structure of a new energy vehicle proposed in this invention.

[0031] Figure 6 This is a schematic diagram showing the position of the pressure ring in the front support connection structure of the front longitudinal beam of a new energy vehicle proposed in this invention.

[0032] Figure 7This is a schematic diagram showing the distribution of the limiting columns in the front support connection structure of the front longitudinal beam of a new energy vehicle proposed in this invention.

[0033] Figure 8 This is a schematic diagram showing the position of the connecting bolts in the front longitudinal beam front bracket connection structure of a new energy vehicle proposed in this invention.

[0034] Figure 9 This is a schematic diagram showing the distribution of the support plates in the front longitudinal beam front bracket connection structure of a new energy vehicle proposed in this invention.

[0035] Figure 10 This is a schematic diagram showing the location of the hydraulic bladder in the front longitudinal beam and front bracket connection structure of a new energy vehicle proposed in this invention.

[0036] Figure 11 This is a schematic diagram of the hydraulic bladder of the front longitudinal beam and front bracket connection structure of a new energy vehicle proposed in this invention.

[0037] Figure 12 This is a schematic diagram of the support box for a front longitudinal beam front bracket connection structure of a new energy vehicle proposed in this invention.

[0038] Figure 13 This is a schematic diagram of the angle limiting plate of the front longitudinal beam front bracket connection structure of a new energy vehicle proposed in this invention;

[0039] Figure 14 This is a schematic diagram of the rotating shaft of the front longitudinal beam front bracket connection structure for a new energy vehicle proposed in this invention.

[0040] In the diagram: 1. Cover plate, 2. Connecting bolt, 3. Limiting ring, 4. Connecting nut, 5. Limiting hole, 6. Device housing, 7. Limiting post, 8. Support box, 9. Rotary shaft, 10. Hydraulic bladder, 11. Angle limiting plate, 12. Support plate, 13. Flow hole, 14. Metal membrane, 15. Unloading hole, 16. Adapter plate, 17. Flow pipe, 18. Front longitudinal beam, 19. Anti-collision beam, 20. Front bracket assembly, 21. Plate, 22. Connecting disc, 23. Connecting plate, 24. Buffer box, 25. Spring, 26. Energy absorbing plate, 27. Microhole, 28. Output rod, 29. Damping plate, 30. Damping connecting plate, 31. Pressure ring, 32. Connecting shaft. Detailed Implementation

[0041] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0042] Example 1:

[0043] A front longitudinal beam front bracket connection structure for a new energy vehicle includes a load relief component, an anti-loosening component, and a strength control component. The load relief component includes a metal membrane 14, a load relief hole 15, a support box 8, and a device housing 6.

[0044] The unloading hole 15 is opened on the side wall of the support box 8. The metal film 14 is fixedly connected to the inside of the unloading hole 15. The upper surface of the support box 8 is fixedly connected to the inner upper surface of the device housing 6, and the lower surface of the support box 8 is fixedly connected to the inner lower surface of the device housing 6.

[0045] The upper and lower surfaces of the hydraulic bladder 10 are fixedly connected to the surface of the cover plate 1. The inlet end of the flow tube 17 is connected to the internal space of the hydraulic bladder 10, and the outlet end of the flow tube 17 is connected to the flow hole 13.

[0046] A flow tube 17 is fixedly connected to the side wall of the support box 8. A hydraulic bladder 10 is fixedly connected to the end of the flow tube 17 away from the support box 8. A flow hole 13 is opened on the side wall of the support box 8. The internal space of the flow hole 13 is connected to the internal space of the flow tube 17. The flow tube 17 is connected to the internal space of the hydraulic bladder 10.

[0047] One side of the upper surface of this device needs to be in contact with the front longitudinal beam, while the lower surface needs to be in contact with the front bracket. In actual use, the front bracket is located in front of the front longitudinal beam, so it will bear the impact load generated by the impact first. The tail end of the support plate 12 faces upward, and this surface will be connected to the front longitudinal beam.

[0048] When an impact occurs, since this device is located between the front longitudinal beam and the front support, it will bear the impact load from the front support. This impact load will cause the device, which is a connecting structure, to deform. When the impact load is too large, the force generated by the impact load will first act on the front support, and then act on the cover plate 1 of this device through the front support. Since the cover plate 1 is fixedly connected to the outer shell 6 of the device, the impact load will be transmitted from the cover plate 1 to the outer shell 6 of the device.

[0049] When the outer casing 6 of the device is subjected to impact loads, it will deform. Since the support box 8 is located between the two cover plates 1, it will also deform when the cover plates 1 are subjected to impact loads. The support box 8 contains multiple sets of support plates 12, which simultaneously support the support box 8. Because the cross-section of each support plate 12 is an isosceles triangle, this structure is used to increase the strength of the support, and the strength can be adjusted according to requirements. The combined action of the multiple sets of support plates 12 inside the support box 8 helps to distribute the load, thereby making the support plates 12 more stable.

[0050] The tail end of the support plate 12 is fixedly connected to the cover plate 1, that is, the upper end of the support plate 12 is fixedly connected to the lower surface of the cover plate 1. The support box 8 contains a liquid medium, and multiple evenly distributed relief holes 15 are formed on the side wall of the support box 8. The relief holes 15 are formed on both sides of the support box 8. Since both the upper and lower surfaces of the support box 8 are fixedly connected to the cover plate 1, the support box 8 is in a sealed state during use. A metal membrane 14 is also fixedly connected inside the relief holes 15.

[0051] The metal membrane 14 blocks the unloading hole 15, thereby creating a seal inside the support box 8 and sealing the liquid medium inside the support box 8 within it. When the support box 8 deforms, it compresses the liquid medium, causing it to be squeezed out of the unloading hole 15. The diameter of the unloading hole 15 is small, so when the support box 8 deforms, the liquid medium inside cannot flow out instantly from the unloading hole 15. It can only flow out relatively slowly over a certain period of time, thus completing a relatively slow unloading process.

[0052] It should be noted that a one-way valve is installed inside the flow orifice 13. The inlet end of the one-way valve communicates with the flow tube 17, and the outlet end communicates with the internal space of the support box 8. A hydraulic bladder 10 is fixedly connected to the upper part of the flow tube 17, and the internal space of the hydraulic bladder 10 communicates with the flow tube 17. The hydraulic bladder 10 is also located between the two cover plates 1, and both the upper and lower surfaces of the hydraulic bladder 10 are fixedly connected to the surfaces of the cover plates 1. Therefore, when the cover plates 1 also deform, they will also compress the hydraulic bladder 10.

[0053] Therefore, when the cover plate 1 is subjected to impact load, because the inlet end of the flow pipe 17 is connected to the internal space of the hydraulic bladder 10, the outlet end of the flow pipe 17 is connected to the inlet end of the one-way valve, and the outlet end of the one-way valve is connected to the inside of the support box 8, the liquid medium inside the hydraulic bladder 10 will enter the support box 8 under the pressure of the deformed cover plate 1. Because a one-way valve is provided in the flow hole 13, the liquid medium will only be squeezed from the internal space of the hydraulic bladder 10 into the support box 8. This allows the liquid medium in the support box 8 to flow out completely, and then continues to provide liquid medium for load relief inside the support box 8.

[0054] Example 2:

[0055] The strength control assembly includes an angle limiting plate 11, a support plate 12, an adapter plate 16, and a rotating shaft 9. There are multiple sets of support plates 12, with two support plates 12 in each set. The two support plates 12 are at a certain angle to each other, and the angle limiting plate 11 is welded between the two support plates 12.

[0056] The support plate 12 is fixedly connected to the rotating shaft 9, the rotating shaft 9 is rotatably connected to the adapter plate 16, and the end of the support plate 12 away from the adapter plate 16 is fixedly connected to the cover plate 1.

[0057] When subjected to impact loads, the two support plates 12 are at a certain angle and form a triangular shape. A rotating shaft 9 is fixedly connected to each support plate 12, and the rotating shaft 9 is rotatably connected to the adapter plate 16. Therefore, the two support plates 12 can rotate along the axis of the rotating shaft 9, thereby achieving angle adjustment.

[0058] An angle limiting plate 11 is fixedly connected between the two support plates 12 by welding. The vertical position of the angle limiting plate 11 between the two support plates 12 determines the angle between them. Therefore, when it is necessary to reduce the support strength of the support plates 12, the angle limiting plate 11 can be moved downward to increase the angle between the two support plates 12, thereby reducing the strength of the support plates 12.

[0059] When it is necessary to increase the support strength between the two support plates 12, the position of the angle limiting plate 11 can be moved upward to reduce the angle between the two support plates 12, thereby increasing the support strength.

[0060] It should be noted that an angle between 60 and 90 degrees between the two support plates 12 is suitable for enhancing strength. Within this angle range, pressure can be efficiently transmitted along the hypotenuse of the support plate 12 in the form of axial pressure, fully utilizing the compressive strength of the plate, with smaller bending and shear components, making it less prone to local buckling and deformation. This avoids the problem of excessively steep support and insufficient lateral restraint due to an excessively small angle, while also preventing insufficient support height and weak overall stiffness due to an excessively large angle.

[0061] The end of the support plate 12 furthest from the adapter plate 16 is fixedly connected to the cover plate 1. The end of the support plate 12 closest to the adapter plate 16 abuts against the inner wall of the support box 8. Furthermore, the cross-section of each set of support plates 12 is triangular.

[0062] It should be noted that the triangular structure can uniformly convert external loads into axial forces on each side, avoiding the generation of bending moments or shear forces that could easily lead to structural failure. When external pressure is applied to the support plate 12, the force is transmitted through the support plate 12 to the two vertices supported by the support plate 12, at the end of the support plate 12 furthest from the transition plate 16. At this time, the force can be transmitted axially along the support plate 12, so that the support plate 12 mainly bears simple pressure. Since the support plate 12 is an inclined plate-shaped part, and the axial load-bearing capacity of the plate is much stronger than its bending and shear resistance, it is not prone to buckling, bending, or fracture, and can stably bear the load.

[0063] Example 3:

[0064] The anti-loosening assembly includes connecting bolts 2, limiting posts 7, limiting holes 5, connecting nuts 4, cover plate 1, and limiting ring 3. There are several connecting bolts 2. The connecting nuts 4 are fixedly connected to the cover plate 1. There are several limiting holes 5, which are evenly distributed on the limiting ring 3 and the connecting nuts 4.

[0065] The limiting post 7 is fixedly connected to the cover plate 1. The limiting post 7 and the limiting hole 5 are fixedly connected by an interference fit. The connecting bolt 2 is fixedly connected to the front longitudinal beam or the front bracket. The connecting nut 4 is threadedly connected to the connecting bolt 2, and the limiting ring 3 is threadedly connected to the connecting bolt 2. The limiting ring 3 is also fixedly connected to the front bracket or the front longitudinal beam. The connecting bolt 2 is fixedly connected to the front bracket or the front longitudinal beam, and the limiting post 7 needs to pass through the front bracket or the front longitudinal beam for fixed connection and have an interference fit with the limiting hole 5.

[0066] The anti-loosening assembly is used to prevent the connection between the connecting bolts 2 and the connecting nuts 4 from loosening. When this device is in use, four of the connecting bolts 2 are threaded to the front bracket, and the other four connecting bolts 2 are threaded to the front longitudinal beam. The limiting ring 3 is threaded to the connecting bolts 2 and is also fixedly connected to the front longitudinal beam and the front bracket. It should be noted that the front longitudinal beam and the front bracket need to have openings for the limiting posts 7 to pass through.

[0067] The limiting post 7 does not engage with the front longitudinal beam or the front bracket. The limiting post 7 passes through the limiting ring 3 and is interference-fitted with multiple limiting holes 5 on the limiting ring 3 and the connecting nut 4. Since the connecting nut 4 is fixedly connected to the surface of the cover plate 1, and the limiting ring 3 is fixedly connected to the front longitudinal beam and the front bracket, and both are simultaneously threaded onto the connecting bolt 2, they are pressed together due to the self-locking property of the threads. This provides a preload force between the connecting nut 4 and the limiting ring 3, thus achieving initial preload. Because multiple limiting posts 7 are interference-fitted with both the connecting nut 4 and the limiting holes on the limiting ring 3, and there is a preload force between the connecting nut 4 and the limiting ring 3, the multiple limiting posts 7 restrict the position between the connecting nut 4 and the limiting ring 3 through the interference fit, thus locking this preload force.

[0068] Example 4:

[0069] The buffer assembly includes a buffer box 24, a mounting plate 21, a connecting disc 22, a connecting plate 23, a spring 25, a damping plate 29, an energy-absorbing plate 26, a pressure ring 31, a connecting shaft 32, a front support assembly 20, an output rod 28, and a damping connecting plate 30. The buffer box 24 is fixedly connected to the side wall of the connecting plate 23, the mounting plate 21 is fixedly connected to the output rod 28, the connecting disc 22 is threadedly connected to the connecting bolt 2, the connecting plate 23 is fixedly connected to the side wall of the device housing 6, one end of the spring 25 is fixedly connected to the inside of the buffer box 24, and the other end of the spring 25 is fixedly connected to the energy-absorbing plate 26.

[0070] The energy-absorbing plate 26 is slidably and sealed to the buffer box 24. The energy-absorbing plate 26 has micro-holes 27. The anti-collision beam 19 is fixedly connected to the plate 21. Both ends of the anti-collision beam 19 are located in the damping connecting plate 30. The damping connecting plate 30 is fixedly connected to the inside of the end of the front bracket assembly 20 away from the connecting plate 22. The pressure ring 31 is fixedly connected to the connecting shaft 32. The connecting shaft 32 is fixedly connected to both ends of the anti-collision beam 19.

[0071] When subjected to a small impact force, the anti-collision beam 19 is fixedly connected to the plate 21, the plate 21 is fixedly connected to the output rod 28, and the other end of the output rod 28 is fixedly connected to the energy-absorbing plate 26. The output rod 28 is also slidably sealed to the buffer box 24. After receiving a small impact force, the anti-collision beam 19 transmits the impact force to the plate 21, which then transmits the force to the energy-absorbing plate 26, causing it to move towards the spring 25. Since the micro-holes 27 are located on the energy-absorbing plate 26, the liquid medium inside flows slowly out through the micro-holes 27 to the other side of the energy-absorbing plate 26. Because the diameter of the micro-holes 27 is small, the liquid medium can only flow relatively slowly to the other side. This limits the range of motion of the anti-collision beam 19 when subjected to impact force, prolonging the movement time of the anti-collision beam 19, thus achieving the effect of absorbing energy when subjected to a small impact force.

[0072] When subjected to a large impact force, the buffer assembly operates in the same way as described above, still absorbing energy. However, the energy-absorbing box, which is integrated with the front bracket assembly 20, participates in the subsequent energy absorption. One end of the front bracket assembly 20 is the energy-absorbing box, and the other end is the front bracket. The energy-absorbing box is located at the end of the front bracket assembly 20 near the anti-collision beam 19. The damping connecting plate 30 is fixedly connected to this end from the inside of the front bracket assembly 20. A damping plate 29 is also fixedly connected to the damping connecting plate 30. The damping plate 29 is a divided cylinder with a concentric connecting shaft 32 inside. The protrusions on the connecting shaft 32 correspond to the positions of the damping plate 29.

[0073] The protrusion on the connecting shaft 32 and the part of the damping plate 29 that contacts the protrusion on the connecting shaft 32 need to be machined into a relatively rough surface to enhance friction. The inner ring of the pressure ring 31 is beveled, and this bevel faces the end of the damping plate 29 closest to the pressure ring 31. When subjected to a large impact force, if the output rod 28 moves too much, the pressure ring 31 will move towards the damping plate 29 and come into contact with it.

[0074] Because the inner ring of the pressure ring 31 is inclined, and this inclined surface is directly opposite one end of the damping plate 29, it will contact one end of the damping plate 29 when the pressure ring 31 moves. Since the inclination direction of this inclined surface is towards the rear end of the anti-collision beam 19, that is, towards the side of the front longitudinal beam 18, when the pressure ring 31 moves, it will press the damping plate 29 downward, thereby making it fit against the protruding part on the connecting shaft 32. As the pressure ring 31 continues to move, the contact area between the inclined surface and the damping plate 29 will gradually increase.

[0075] This increases the downward pressure of the damping plate 29, thereby increasing the contact area between the damping plate 29 and the connecting shaft 32. Since the energy-absorbing box is located at the end of the front bracket assembly 20 near the anti-collision beam 19, and the damping connecting plate 30 is fixedly connected to this location from the inside of the front bracket assembly 20, the energy-absorbing box located in the front bracket assembly 20 will also bear the force from the anti-collision beam 19. At the same time, since the depth of the damping plate 29 is limited, after the front end of the connecting shaft 32 is completely inserted into the damping plate 29, the energy-absorbing box will also directly bear the impact force.

[0076] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A front longitudinal beam front bracket connection structure for a new energy vehicle, comprising a load-relieving assembly, an anti-loosening assembly, a strength control assembly, and a buffer assembly, characterized in that, The unloading assembly includes a metal membrane (14), an unloading hole (15), a support box (8), and a device housing (6). The unloading hole (15) is opened on the side wall of the support box (8), the metal film (14) is fixedly connected to the inside of the unloading hole (15), the upper surface of the support box (8) is fixedly connected to the inner upper surface of the device housing (6), and the lower surface of the support box (8) is fixedly connected to the inner lower surface of the device housing (6). A flow tube (17) is fixedly connected to the side wall of the support box (8). A hydraulic bladder (10) is fixedly connected to one end of the flow tube (17) away from the support box (8). A flow hole (13) is provided on the side wall of the support box (8). The internal space of the flow hole (13) is connected to the internal space of the flow tube (17). The flow tube (17) is connected to the internal space of the hydraulic bladder (10).

2. The front longitudinal beam front bracket connection structure for a new energy vehicle according to claim 1, characterized in that, The anti-loosening component includes a connecting bolt (2), a limiting post (7), a limiting hole (5), a connecting nut (4), a cover plate (1), and a limiting ring (3); The number of connecting bolts (2) is several, the connecting nut (4) is fixedly connected to the cover plate (1), the number of limiting holes (5) is several, and the limiting holes (5) are evenly opened on the limiting ring (3) and the connecting nut (4).

3. The front longitudinal beam front bracket connection structure for a new energy vehicle according to claim 1, characterized in that, The strength control component includes an angle limiting plate (11), a support plate (12), a transition plate (16), and a rotating shaft (9). The support plate (12) has multiple sets, and each set has two support plates (12). The two support plates (12) are at a certain angle, and the angle limiting plate (11) is welded between the two support plates (12).

4. The front longitudinal beam front bracket connection structure for a new energy vehicle according to claim 4, characterized in that, The support plate (12) is fixedly connected to the rotating shaft (9), the rotating shaft (9) is rotatably connected to the adapter plate (16), and the end of the support plate (12) away from the adapter plate (16) is fixedly connected to the cover plate (1).

5. The front longitudinal beam front bracket connection structure for a new energy vehicle according to claim 3, characterized in that, The limiting post (7) is fixedly connected in the cover plate (1), and the limiting post (7) and the limiting hole (5) are fixedly connected by interference fit. The connecting bolt (2) is fixedly connected to the front longitudinal beam or the front bracket.

6. The front longitudinal beam front bracket connection structure for a new energy vehicle according to claim 3, characterized in that, The connecting nut (4) is threadedly connected to the connecting bolt (2), the limiting ring (3) is threadedly connected to the connecting bolt (2), and the limiting ring (3) is also fixedly connected to the front bracket or the front longitudinal beam.

7. The front longitudinal beam front bracket connection structure for a new energy vehicle according to claim 3, characterized in that, The connecting bolt (2) is fixedly connected to the front bracket or the front longitudinal beam, and the limiting post (7) needs to pass through the front bracket or the front longitudinal beam and be fixedly connected with the limiting hole (5) with an interference fit. The upper and lower surfaces of the hydraulic bladder (10) are fixedly connected to the surface of the cover plate (1). The inlet end of the flow tube (17) is connected to the internal space of the hydraulic bladder (10), and the outlet end of the flow tube (17) is connected to the flow hole (13).

8. The front longitudinal beam front bracket connection structure for a new energy vehicle according to claim 1, characterized in that, The buffer assembly includes a buffer box (24), a plate (21), a connecting plate (22), a connecting plate (23), a spring (25), a damping plate (29), an energy-absorbing plate (26), a pressure ring (31), a connecting shaft (32), a front bracket assembly (20), an output rod (28), and a damping connecting plate (30). The buffer box (24) is fixedly connected to the side wall of the connecting plate (23), the plate (21) is fixedly connected to the output rod (28), the connecting plate (22) is threadedly connected to the connecting bolt (2), the connecting plate (23) is fixedly connected to the side wall of the device housing (6), one end of the spring (25) is fixedly connected to the inside of the buffer box (24), and the other end of the spring (25) is fixedly connected to the energy-absorbing plate (26).

9. The front longitudinal beam front bracket connection structure for a new energy vehicle according to claim 1, characterized in that, The energy-absorbing plate (26) is slidably and sealed to the buffer box (24). The energy-absorbing plate (26) has micro-holes (27). The anti-collision beam (19) is fixedly connected to the plate (21). Both ends of the anti-collision beam (19) are located in the damping connecting plate (30). The damping connecting plate (30) is fixedly connected to the inside of the front bracket assembly (20) away from the connecting plate (22). The pressure ring (31) is fixedly connected to the connecting shaft (32). The connecting shaft (32) is fixedly connected to both ends of the anti-collision beam (19).

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