A new energy automobile suspension support arm structure capable of elastically collapsing and resetting

Abstract

The application discloses a new energy automobile suspension support arm structure capable of elastically collapsing and resetting, and relates to the field of automobile suspension structures. In the application, the flow rate of hydraulic oil in a damping buffer assembly during damping can be adjusted, so that the contraction range between a hydraulic sleeve and a buffer shaft is adjusted. When the flow rate of the hydraulic oil is adjusted to decrease, the buffer contraction range between the hydraulic sleeve and the buffer shaft is reduced, so that the overall suspension is relatively hard. When the flow rate of the hydraulic oil is adjusted to increase, the buffer contraction range between the hydraulic sleeve and the buffer shaft is increased, so that the overall suspension is relatively soft. Therefore, the contraction damping range of the suspension can be adjusted according to the driving habit of a driver, and the driving comfort and the applicability of the suspension are improved. On the other hand, when a vehicle travels on a relatively flat road surface, the flow rate of the hydraulic oil can be adjusted to increase, so that the overall suspension is relatively soft, and better damping effect is provided. When the vehicle travels on a road surface with unevenness, the flow rate of the hydraulic oil can be adjusted to decrease, so that the buffer damping range of the vehicle is reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of automobile suspension structure, and particularly relates to a new energy automobile suspension support arm structure capable of being elastically collapsed and reset. BACKGROUND

[0002] The automobile suspension is an important part for ensuring the comfort of riding. Meanwhile, as a force transmission machine connecting the frame (or the vehicle body) and the axle (or the wheel), the automobile suspension is also an important part for ensuring the safety of automobile driving. In the prior art, a hydraulic shock absorber is installed on the automobile suspension, and the vehicle body is buffered and damped through the damping principle of the hydraulic shock absorber. The damping effect of the existing hydraulic shock absorber is mostly fixed design, that is, the damping amplitude is fixed, and cannot be adjusted according to the habits of the driver and the actual road conditions, thereby affecting the comfort of vehicle driving. SUMMARY

[0003] In view of the problems in the related art, the present application provides a new energy automobile suspension support arm structure capable of being elastically collapsed and reset, so as to overcome the above technical problems existing in the prior art.

[0004] To solve the above technical problems, the present application is realized by the following technical scheme:

[0005] The present application is a new energy automobile suspension support arm structure capable of being elastically collapsed and reset, comprising a support mechanism, wherein the support mechanism comprises a main frame, a hub connecting frame and a movable connecting piece, the movable connecting piece is installed between the main frame and the hub connecting frame, and a buffer mechanism is further installed between the main frame and the hub connecting frame.

[0006] The buffer mechanism comprises a hydraulic sleeve, a buffer shaft, an elastic buffer support assembly, a damping buffer assembly and a flow rate adjusting assembly; the hydraulic sleeve and the buffer shaft are movably connected, the elastic buffer support assembly is supported between the hydraulic sleeve and the buffer shaft, the damping buffer assembly is arranged in the interior of the hydraulic sleeve, the buffer shaft can drive the hydraulic oil in the damping buffer assembly to flow and be extruded in the hydraulic sleeve when the buffer shaft is contracted and damped, and the flow rate adjusting assembly can adjust the flow rate of the hydraulic oil when damped.

[0007] Further, the movable connecting piece comprises an upper connecting arm, a lower connecting arm and two universal ball connectors, the two universal ball connectors are respectively fixedly installed at the upper and lower ends of the inner side of the hub connecting frame, one end of the upper connecting arm is rotationally connected with the upper end of the main frame, the other end of the upper connecting arm is movably connected with the universal ball connector at the upper end of the inner side of the hub connecting frame, one end of the lower connecting arm is rotationally connected with the lower end of the main frame, and the other end of the lower connecting arm is movably connected with the universal ball connector at the lower end of the inner side of the hub connecting frame.

[0008] Further, one end of the inner side of the hub connecting frame is fixedly provided with a steering connecting head.

[0009] Further, the main frame is made of elastic metal material, and the main frame is in U-shaped structure, and an elastic connecting plate is arranged at the opening of the U-shaped structure.

[0010] Further, the elastic buffer supporting assembly comprises a buffer spring and two spring seats, the two spring seats are fixedly arranged on the hydraulic sleeve and the buffer shaft respectively, the buffer spring is sleeved on the outer ring of the hydraulic sleeve and the buffer shaft, and abuts between the two spring seats.

[0011] Further, the damping buffer assembly comprises a hydraulic piston, the hydraulic piston is sealingly and slidingly arranged in the inner part of the hydraulic sleeve, and the inner part of the hydraulic sleeve is divided into left and right two hydraulic buffer cavities, the two hydraulic buffer cavities are filled with hydraulic oil, one end of the hydraulic piston is fixedly connected with the inner side end of the buffer shaft, and the hydraulic piston is provided with a flow guide hole for connecting the left and right two hydraulic buffer cavities.

[0012] Further, the flow rate adjusting assembly comprises a sliding groove and an air pressure driving unit, the sliding groove is arranged in the inner part of the hydraulic piston, one end of the sliding groove is communicated with the flow guide hole, and a pore adjusting plate is slidingly arranged in the inner part of the sliding groove, the pore adjusting plate is movable to the flow guide hole under the driving of the air pressure driving unit, so as to adjust the pore size of the flow guide hole.

[0013] Further, the air pressure driving unit comprises an interface, a gas guide cavity and a pressure cavity, the pressure cavity is arranged in the inner part of the hydraulic piston and located at one side of the sliding groove, an adjusting piston is slidingly arranged in the inner part of the pressure cavity, one end of the adjusting piston is fixedly provided with a connecting rod, one end of the connecting rod extends into the sliding groove and is fixedly connected with the pore adjusting plate, a pressure spring is sleeved on the outer ring of the connecting rod, one end of the pressure spring abuts against the end of the adjusting piston, and the other end of the pressure spring abuts against the end wall of the pressure cavity.

[0014] The gas guide cavity is arranged in the inner part of the buffer shaft, the interface is fixedly arranged on the outer side end of the buffer shaft and communicated with the gas guide cavity, the outer side end of the interface is communicated with the gas source, and one end of the pressure cavity is provided with a gas guide hole communicated with the gas guide cavity.

[0015] Further, an air piston is slidingly and sealingly arranged in the inner part of the hydraulic sleeve, the air piston is arranged at the end of the inner part of the hydraulic sleeve to form a gas pressure buffer cavity, and the gas pressure buffer cavity is filled with buffer gas.

[0016] Further, one end of the air piston located in the hydraulic buffer cavity is fixedly provided with an air nozzle, the air nozzle is provided with a through hole communicated with the air nozzle, and a gas guide pipe is connected and arranged on the air nozzle, and one end of the gas guide pipe is communicated with the gas guide cavity.

[0017] The present application has the following advantages:

[0018] 1. The present application can buffer and dampen the vehicle through the cooperation of the elastic buffer support assembly, the hydraulic sleeve, the buffer shaft and the damping buffer assembly, thereby improving the comfort of the vehicle during driving, and the flow rate of the hydraulic oil in the damping buffer assembly can be adjusted by the flow rate adjusting assembly to adjust the contraction range between the hydraulic sleeve and the buffer shaft, when the flow rate of the hydraulic oil is adjusted to decrease, the contraction range of the buffer between the hydraulic sleeve and the buffer shaft decreases, making the suspension overall harder, and when the flow rate of the hydraulic oil is adjusted to increase, the contraction range of the buffer between the hydraulic sleeve and the buffer shaft increases, making the suspension overall softer, thereby adjusting the contraction and damping range of the suspension according to the driving habits of the driver, which is beneficial to improve the comfort of driving and the applicability of the suspension; on the other hand, when the vehicle is driving on a relatively flat road, the flow rate of the hydraulic oil can be adjusted to increase, making the suspension overall softer, providing better damping effect, and when the vehicle is driving on a bumpy road, the flow rate of the hydraulic oil can be adjusted to decrease, making the suspension overall harder, preventing excessive contraction and damping from causing the vehicle chassis to touch the bottom or the suspension to be damaged by excessive deformation, which is beneficial to improve the safety of vehicle driving.

[0019] 2. The present application further provides an air piston and a gas pressure buffer cavity in the hydraulic cylinder, which cooperate with the damping buffer assembly to buffer and dampen, when the hydraulic piston in the damping buffer assembly reciprocates, the oil needs to flow in both directions during compression and rebound, and the elastic buffer of the gas pressure buffer cavity can reduce the sudden change of oil flow resistance, making the damping force more linear, thereby making the suspension buffer and damping process more stable, which is beneficial to improve the comfort of vehicle driving.

[0020] 3. The present application drives the aperture adjusting plate to move towards the direction of the flow guide hole on the hydraulic piston through the gas pressure, to adjust the aperture size of the flow guide hole, and then adjust the flow rate of the hydraulic oil flowing through the flow guide hole and the buffer and damping effect of the buffer mechanism, through the driving of the gas pressure, the aperture adjusting process is more convenient by adjusting the apertures of multiple flow guide holes, and the gas pressure cavity is communicated with the gas pressure buffer cavity, when the buffer mechanism contracts and damps, the greater the contraction range, the greater the gas pressure in the gas pressure cavity and the gas pressure buffer cavity, thereby driving the aperture adjusting plate to continue to move towards the direction of the flow guide hole through the gas pressure, to adjust and reduce the aperture of the flow guide hole and the flow rate of the hydraulic oil, and then slow down the contraction speed of the buffer mechanism, preventing the buffer mechanism from contracting excessively and causing the vehicle chassis to touch the bottom or the suspension to be damaged by excessive deformation.

[0021] Of course, any product implementing the present application does not necessarily need to achieve all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed for the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative effort.

[0023] Figure 1 Fig. 1 is a perspective view of a suspension support arm structure according to the present application;

[0024] Figure 2 Fig. 2 is a partial enlarged view of A of the suspension support arm structure according to the present application; Figure 1

[0025] Figure 3 Fig. 3 is a perspective view of another suspension support arm structure according to the present application;

[0026] Figure 4 Fig. 4 is a perspective view of another suspension support arm structure according to the present application;

[0027] Figure 5 Fig. 5 is a partial enlarged view of B of the suspension support arm structure according to the present application; Figure 4

[0028] Figure 6 Fig. 6 is a perspective view of another suspension support arm structure according to the present application;

[0029] Figure 7 Fig. 7 is a partial enlarged view of C of the suspension support arm structure according to the present application; Figure 6

[0030] Fig. 8 is a perspective view of another suspension support arm structure according to the present application; Figure 8

[0031] Fig. 9 is a partial enlarged view of D of the suspension support arm structure according to the present application; Figure 9 Figure 8 Fig. 10 is a perspective view of another suspension support arm structure according to the present application;

[0032] Figure 10 Fig. 11 is a partial enlarged view of E of the suspension support arm structure according to the present application.

[0033] Figure 11 Figure 10

[0034] ​​​​​In the figure: 1, support mechanism; 11, main frame; 12, upper connecting arm; 13, lower connecting arm; 14, hub connecting frame; 15, universal ball connector; 16, steering connector; 2, buffer mechanism; 21, hydraulic sleeve; 22, spring seat; 23, buffer spring; 24, buffer shaft; 25, hydraulic piston; 26, flow guide hole; 27, hydraulic buffer cavity; 28, air piston; 29, air pressure buffer cavity; 210, interface; 211, air nozzle; 212, air guide tube; 213, air guide cavity; 214, sliding groove; 215, interstitial adjustment plate; 216, pressure spring; 217, pressure cavity; 218, connecting rod; 219, adjustment piston; 220, air guide hole; 221, through hole. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments of the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0036] In the description of the application, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner" and the like indicate the orientation or positional relationship, and are only used to facilitate the description of the application and simplify the description, and do not indicate or imply that the referred components or elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the application.

[0037] Embodiment one

[0038] Please refer to Figures 1-3 , Figure 8 , Figure 9 The application is a new energy automobile suspension support arm structure capable of elastic collapse reset, which comprises a support mechanism 1. The support mechanism 1 comprises a main frame 11, a hub connecting frame 14 and a movable connecting piece. The movable connecting piece is installed between the main frame 11 and the hub connecting frame 14. A buffer mechanism 2 is also installed between the main frame 11 and the hub connecting frame 14. The buffer mechanism 2 comprises a hydraulic sleeve 21, a buffer shaft 24, an elastic buffer support assembly, a damping buffer assembly and a flow rate adjustment assembly. The hydraulic sleeve 21 and the buffer shaft 24 are movably connected. The elastic buffer support assembly is supported between the hydraulic sleeve 21 and the buffer shaft 24. The damping buffer assembly is arranged inside the hydraulic sleeve 21. The buffer shaft 24 can drive the hydraulic oil in the damping buffer assembly to flow in the hydraulic sleeve 21 to perform damping shock absorption when the buffer shaft 24 is in contraction shock absorption. The flow rate adjustment assembly can adjust the flow rate of the hydraulic oil during shock absorption.

[0039] The main frame 11 is fixedly connected with the new energy automobile chassis, and the hub connecting frame 14 is fixedly connected with the new energy automobile hub, so that the new energy automobile is supported through the suspension support arm structure. When the vehicle runs bumpily, the buffer shaft 24 is retracted into the hydraulic sleeve 21, so as to drive the elastic buffer support assembly to retract, buffer and absorb shock, and the hydraulic oil in the damping buffer assembly is extruded and flows in the hydraulic sleeve 21, so as to dampen and absorb shock, so that the vehicle is buffered and damped through the cooperation of the elastic buffer support assembly, the hydraulic sleeve 21, the buffer shaft 24 and the damping buffer assembly, the comfort of the vehicle during running is improved, and the flow rate of the hydraulic oil in the damping buffer assembly during shock absorption can be adjusted through the flow rate adjusting assembly, so as to adjust the retraction amplitude between the hydraulic sleeve 21 and the buffer shaft 24. When the flow rate of the hydraulic oil is adjusted to decrease, the buffer retraction amplitude between the hydraulic sleeve 21 and the buffer shaft 24 decreases, so that the overall suspension is relatively hard. When the flow rate of the hydraulic oil is adjusted to increase, the buffer retraction amplitude between the hydraulic sleeve 21 and the buffer shaft 24 increases, so that the overall suspension is relatively soft. Therefore, the retraction and damping amplitude of the suspension can be adjusted according to the driving habit of the driver, which is beneficial to improve the comfort of driving and the applicability of the suspension. On the other hand, when the vehicle runs on a relatively flat road surface, the flow rate of the hydraulic oil can be adjusted to increase, so that the overall suspension is relatively soft, and better shock absorption effect is provided. When the vehicle runs on a bumpy road surface, the flow rate of the hydraulic oil can be adjusted to decrease, so that the overall suspension is relatively hard, and the vehicle chassis is prevented from touching the bottom or the suspension from being damaged due to excessive deformation during excessive retraction and damping, which is beneficial to improve the safety of vehicle running.

[0040] Embodiment two

[0041] Please refer to Figures 1-3 The difference between the embodiment and the above-mentioned embodiment is that the movable connecting piece includes an upper connecting arm 12, a lower connecting arm 13 and two universal ball connectors 15. The two universal ball connectors 15 are fixedly installed on the upper and lower ends of the inner side of the hub connecting frame 14. One end of the upper connecting arm 12 is rotatably connected with the upper end of the main frame 11, and the other end of the upper connecting arm 12 is movably connected with the universal ball connector 15 on the upper end of the inner side of the hub connecting frame 14. One end of the lower connecting arm 13 is rotatably connected with the lower end of the main frame 11, and the other end of the lower connecting arm 13 is movably connected with the universal ball connector 15 on the lower end of the inner side of the hub connecting frame 14. By arranging the upper and lower connecting arms, the stability of the connection between the main frame 11 and the hub connecting frame 14 can be improved. The connecting arm and the hub connecting frame 14 are connected through the universal ball connector 15, so that the connecting arm and the hub connecting frame 14 have sufficient rotational freedom during shock absorption and wheel steering, so as to ensure the stability of the vehicle during steering and shock absorption.

[0042] Further, the steering connecting head 16 is fixedly installed at one end of the inner side of the hub connecting frame 14, and can be connected with the steering system of the new energy vehicle, so as to drive the wheels to steer through the steering system and the steering connecting head 16.

[0043] Further, the main frame 11 is made of elastic metal material, and the main frame 11 is in U-shaped structure, and the elastic connecting plate is installed at the opening of the U-shaped structure, so that when the hydraulic sleeve 21 and the buffer shaft 24 are contracted and damped, the main frame 11 can be elastically collapsed and deformed, and after damping is completed, the main frame 11 can be elastically reset to the original state, and the elastic connecting plate can elastically limit the main frame 11, thereby improving the stability of the main frame 11.

[0044] Embodiment three

[0045] As shown in Figure 1 , Figure 2 , the difference between the present embodiment and the above-mentioned embodiments is that the elastic buffer support assembly includes a buffer spring 23 and two spring seats 22, the two spring seats 22 are respectively fixedly installed on the hydraulic sleeve 21 and the buffer shaft 24, and the buffer spring 23 is sleeved on the outer circle of the hydraulic sleeve 21 and the buffer shaft 24 and abuts between the two spring seats 22.

[0046] The buffer spring 23 is used for supporting the vehicle, when the vehicle bumps, the buffer shaft 24 is contracted into the hydraulic sleeve 21, so that the two spring seats 22 move close to each other, the two spring seats 22 cooperate to extrude and contract the buffer spring 23, so as to buffer and damp the vehicle, and then the buffer spring 23 is reset and elongated under the action of the reset elastic force, and drives the buffer shaft 24 to move outward along the hydraulic sleeve 21 and extend to reset.

[0047] Embodiment four

[0048] As shown in Figure 2 , Figure 4 , Figure 5 , the difference between the present embodiment and the above-mentioned embodiments is that the damping buffer assembly includes a hydraulic piston 25, the hydraulic piston 25 is sealingly and slidingly installed in the inside of the hydraulic sleeve 21, and divides the inside of the hydraulic sleeve 21 into left and right two hydraulic buffer cavities 27, the two hydraulic buffer cavities 27 are filled with hydraulic oil, one end of the hydraulic piston 25 is fixedly connected with the inside end of the buffer shaft 24, and the hydraulic piston 25 is provided with a flow guide hole 26 which can communicate the left and right two hydraulic buffer cavities 27.

[0049] When the buffer shaft 24 is retracted into the hydraulic sleeve 21 for shock absorption, the buffer shaft 24 drives the hydraulic piston 25 to move to the right hydraulic buffer cavity 27, so as to extrude the hydraulic oil in the right hydraulic buffer cavity 27, and the hydraulic oil in the right hydraulic buffer cavity 27 is delivered to the left hydraulic buffer cavity 27 through the flow guide hole 26 on the hydraulic piston 25. Correspondingly, when the buffer shaft 24 is moved out of the hydraulic sleeve 21 for reset under the reset elastic force of the buffer spring 23, the buffer shaft 24 drives the hydraulic piston 25 to move to the left hydraulic buffer cavity 27, so as to extrude the hydraulic oil in the left hydraulic buffer cavity 27 to the right hydraulic buffer cavity 27. In this way, the hydraulic oil is delivered back and forth in the two hydraulic buffer cavities 27 during the shock absorption process, and the kinetic potential energy is converted into heat energy through viscous friction during the back and forth flow of the hydraulic oil, so as to realize the shock absorption process.

[0050] Example Five

[0051] Please refer to Figure 8 、 Figure 9 , the difference between the embodiment and the above-mentioned embodiments is that the flow rate adjusting assembly includes a chute 214 and an air pressure driving unit. The chute 214 is arranged in the interior of the hydraulic piston 25, one end of the chute 214 is communicated with the flow guide hole 26, and the aperture adjusting plate 215 is slidably arranged in the interior of the chute 214. The aperture adjusting plate 215 can be driven by the air pressure driving unit to move to the direction of the flow guide hole 26, so as to adjust the aperture size of the flow guide hole 26. The air pressure driving unit includes an interface 210, a gas guide cavity 213 and a pressure cavity 217. The pressure cavity 217 is arranged in the interior of the hydraulic piston 25 and located at one side of the chute 214. The adjusting piston 219 is slidably arranged in the interior of the pressure cavity 217. The connecting rod 218 is fixedly arranged at one end of the adjusting piston 219. One end of the connecting rod 218 extends into the interior of the chute 214 and is fixedly connected with the aperture adjusting plate 215. The pressure spring 216 is sleeved on the outer circle of the connecting rod 218. One end of the pressure spring 216 abuts against the end of the adjusting piston 219, and the other end of the pressure spring 216 abuts against the end wall of the pressure cavity 217. The gas guide cavity 213 is arranged in the interior of the buffer shaft 24. The interface 210 is fixedly arranged on the outer side of the buffer shaft 24 and communicated with the gas guide cavity 213. The outer side of the interface 210 is communicated with the gas source. The one end of the pressure cavity 217 is provided with the gas guide hole 220 communicated with the gas guide cavity 213.

[0052] When the hydraulic piston 25 reciprocates left and right to drive the hydraulic oil flow damping, the larger the aperture of the flow guide hole 26, the faster the flow rate of the hydraulic oil flowing through the flow guide hole 26, so that the hydraulic oil in the hydraulic buffer cavity 27 can be more easily transported to the other side of the hydraulic buffer cavity 27, thereby increasing the moving stroke of the hydraulic piston 25 to increase the contraction buffer amplitude. Correspondingly, the smaller the aperture of the flow guide hole 26, the slower the flow rate of the hydraulic oil flowing through the flow guide hole 26, so that the speed of the hydraulic oil in the hydraulic buffer cavity 27 transported to the other side of the hydraulic buffer cavity 27 is slowed down, thereby reducing the moving stroke of the hydraulic piston 25 to reduce the contraction buffer amplitude.

[0053] Specifically, when it is necessary to reduce the contraction buffer amplitude of the buffer shaft 24 and the hydraulic sleeve 21, the gas source continues to inflate and pressurize the guide air cavity 213 and the pressure cavity 217 through the interface 210. At this time, the air pressure in the pressure cavity 217 overcomes the elastic force of the pressure spring 216 to extrude and move the adjusting piston 219 in the direction of the aperture adjusting plate 215, so that the adjusting piston 219 drives the aperture adjusting plate 215 to move in the direction of the flow guide hole 26 through the connecting rod 218, so that the aperture adjusting plate 215 increases the sealing and shielding area of the flow guide hole 26, thereby adjusting and reducing the aperture size of the flow guide hole 26, so that the speed of the hydraulic oil flowing through the flow guide hole 26 during buffering and damping is slowed down.

[0054] When it is necessary to increase the contraction buffer amplitude of the buffer shaft 24 and the hydraulic sleeve 21, the gas in the guide air cavity 213 and the pressure cavity 217 is extracted and depressurized through the interface 210. At this time, the reset elastic force of the pressure spring 216 in the pressure cavity 217 overcomes the air pressure to push and move the adjusting piston 219 away from the aperture adjusting plate 215, so that the adjusting piston 219 drives the aperture adjusting plate 215 to move away from the flow guide hole 26 through the connecting rod 218, so that the aperture adjusting plate 215 gradually moves away from the flow guide hole 26 to reduce the sealing and shielding area of the flow guide hole 26, thereby adjusting and increasing the aperture size of the flow guide hole 26, so that the speed of the hydraulic oil flowing through the flow guide hole 26 during buffering and damping is increased.

[0055] Embodiment six

[0056] Please refer to Figures 4-11 The difference between the present embodiment and the above-mentioned embodiments is that the air piston 28 is also slidingly and sealingly installed in the interior of the hydraulic sleeve 21, and the air piston 28 forms an air pressure buffer cavity 29 at the end of the interior of the hydraulic sleeve 21, and the air pressure buffer cavity 29 is filled with buffer gas.

[0057] When the hydraulic piston 25 moves to the right hydraulic buffer cavity 27 direction to contract and reduce the shock, the hydraulic piston 25 extrudes and pressurizes the hydraulic oil in the right hydraulic buffer cavity 27, at this time the hydraulic buffer cavity 27 extrudes and moves the air piston 28 to the air pressure buffer cavity 29 direction through the hydraulic pressure of the hydraulic oil, so that the air pressure buffer cavity 29 space is reduced, the internal air pressure is increased, and correspondingly, when the hydraulic piston 25 moves to the left hydraulic buffer cavity 27 direction, the right hydraulic buffer cavity 27 space is increased and the hydraulic pressure is reduced, at this time the air pressure buffer cavity 29 extrudes and moves the air piston 28 to the hydraulic buffer cavity 27 direction through the air pressure, so as to contract and assist the buffer through the air pressure in the air pressure buffer cavity 29, the elastic buffer of the air pressure buffer cavity 29 can reduce the flow resistance of the hydraulic oil, so that the damping force is more linear, so that the suspension buffer shock absorbing process is more stable, which is beneficial to improve the comfort of the vehicle when driving.

[0058] Further, the air nozzle 211 is fixedly installed on one end of the air piston 28 located in the hydraulic buffer cavity 27, the through hole 221 is formed in the air piston 28 and communicates with the air nozzle 211, and the air guide pipe 212 is connected and installed on the air nozzle 211, one end of the air guide pipe 212 communicates with the air guide cavity 213.

[0059] When the buffer shaft 24 contracts and reduces the shock in the hydraulic sleeve 21, the greater the contraction amplitude, the greater the moving amplitude of the air piston 28 to the air pressure buffer cavity 29 direction, so that the internal space of the air pressure buffer cavity 29 is smaller and the air pressure is higher, at this time, because the air guide cavity 213 communicates with the air pressure buffer cavity 29 through the through hole 221, the air nozzle 211 and the air guide pipe 212, the air pressure in the air guide cavity 213 and the pressure cavity 217 is increased synchronously, so that the air pressure in the pressure cavity 217 drives the aperture adjusting plate 215 to move to the flow guide hole 26 direction to adjust and reduce the size of the air gap of the flow guide hole 26 and the flow rate of the hydraulic oil, thereby slowing down the buffer contraction speed of the hydraulic piston 25 and the buffer shaft 24, preventing the buffer shaft 24 from over-contracting to cause the vehicle chassis to touch the bottom or the suspension to be damaged by over-deformation, and improving the safety of the vehicle driving.

[0060] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the invention. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0061] The preferred embodiments of the application disclosed above are only to facilitate the elucidation of the application. The preferred embodiments do not describe all the details of the application and limit the application to the specific embodiments described. Obviously, many modifications and variations can be made in light of the teachings above. The description is chosen and described in order to provide the best illustration of the application principles and their practical application, so that those skilled in the art can well understand and utilize the application.

Claims

1. A new energy vehicle suspension support arm structure capable of elastically collapsing and resetting, comprising a support mechanism, characterized in that: The supporting mechanism comprises a main frame, a wheel hub connecting frame and a movable connecting piece, the movable connecting piece is installed between the main frame and the wheel hub connecting frame, and a buffering mechanism is further installed between the main frame and the wheel hub connecting frame; The buffering mechanism comprises a hydraulic sleeve, a buffering shaft, an elastic buffering support assembly, a damping buffering assembly and a flow rate adjusting assembly; the hydraulic sleeve and the buffering shaft are movably connected, the elastic buffering support assembly is supported between the hydraulic sleeve and the buffering shaft, the damping buffering assembly is arranged in the hydraulic sleeve, and the buffering shaft can drive the hydraulic oil in the damping buffering assembly to flow in the hydraulic sleeve to perform damping shock absorption when the buffering shaft is contracted to perform shock absorption; and the flow rate adjusting assembly can adjust the flow rate of the hydraulic oil during shock absorption. The damping buffering assembly comprises a hydraulic piston, the hydraulic piston is movably and sealingly installed in the hydraulic sleeve to separate the inside of the hydraulic sleeve into two hydraulic buffering cavities, and the hydraulic piston is provided with a flow guide hole for connecting the two hydraulic buffering cavities. The flow rate adjusting assembly comprises a sliding groove and a gas pressure driving unit, the sliding groove is arranged in the hydraulic piston, one end of the sliding groove is connected with the flow guide hole, and a porosity adjusting plate is movably installed in the sliding groove; the porosity adjusting plate can move towards the flow guide hole under the driving of the gas pressure driving unit to adjust the porosity of the flow guide hole. The gas pressure driving unit comprises a connector, a gas guide cavity and a pressure cavity, the pressure cavity is arranged in the hydraulic piston and located at one side of the sliding groove, a regulating piston is movably installed in the pressure cavity, one end of the regulating piston is fixedly connected with a connecting rod, one end of the connecting rod extends into the sliding groove and is fixedly connected with the porosity adjusting plate, a pressure spring is sleeved on the outer circle of the connecting rod, one end of the pressure spring abuts against the end of the regulating piston, and the other end of the pressure spring abuts against the end wall of the pressure cavity. The gas guide cavity is arranged in the buffering shaft, the connector is fixedly installed on the outer side of the buffering shaft and connected with the gas guide cavity, the outer side of the connector is connected with a gas source, and the pressure cavity is provided with a gas guide hole connected with the gas guide cavity.

2. The elastic collapsible resettable new energy vehicle suspension support arm structure according to claim 1, characterized in that: The movable connecting piece comprises an upper connecting arm, a lower connecting arm and two universal ball connectors, the two universal ball connectors are fixedly installed on the upper and lower ends of the inner side of the wheel hub connecting frame, one end of the upper connecting arm is rotatably connected with the upper end of the main frame, the other end of the upper connecting arm is movably connected with the universal ball connector on the upper end of the inner side of the wheel hub connecting frame, one end of the lower connecting arm is rotatably connected with the lower end of the main frame, and the other end of the lower connecting arm is movably connected with the universal ball connector on the lower end of the inner side of the wheel hub connecting frame.

3. The elastic collapsible resettable new energy vehicle suspension support arm structure according to claim 1, characterized in that: One end of the inner side of the wheel hub connecting frame is fixedly connected with a steering connector.

4. The elastic collapsible resettable new energy vehicle suspension support arm structure according to claim 1, characterized in that: The main frame is made of elastic metal material and has a U-shaped structure, and an elastic connecting plate is installed at the opening of the U-shaped structure.

5. The elastic collapsible resettable new energy vehicle suspension support arm structure according to claim 1, characterized in that: The elastic buffering support assembly comprises a buffering spring and two spring seats, the two spring seats are fixedly installed on the hydraulic sleeve and the buffering shaft, and the buffering spring is sleeved on the outer circles of the hydraulic sleeve and the buffering shaft and abuts against the two spring seats.

6. The elastically collapsible and resettable suspension support arm structure of a new energy vehicle according to claim 1, characterized in that: The two hydraulic buffering cavities are filled with hydraulic oil, and one end of the hydraulic piston is fixedly connected with the inner end of the buffering shaft.

7. The elastic collapsible resettable new energy vehicle suspension support arm structure according to claim 1, characterized in that: The interior of the hydraulic sleeve is also slidingly sealed with an air piston, which is isolated at the end of the interior of the hydraulic sleeve to form an air pressure buffer cavity, which is filled with buffer gas.

8. The elastically collapsible and resettable suspension support arm structure of a new energy vehicle according to claim 7, characterized in that: One end of the air piston is fixedly provided with an air nozzle, and a through hole is formed in the air piston and communicates with the air nozzle. An air guide pipe is connected to the air nozzle, and one end of the air guide pipe communicates with an air guide cavity.

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