Integrated shock absorber

Abstract

The present application relates to an integrated shock absorber, which includes a first shock absorption module, a second shock absorption module and an energy storage module; the first shock absorption module is provided with a buffer cylinder body having a first chamber, a first movable member and a pushing portion, the first movable member and the pushing portion are arranged at intervals along a first direction, and at least the first movable member is slidably connected to the buffer cylinder body; the second shock absorption module includes a shock absorption cylinder body provided with a second chamber and a second movable member disposed in the second chamber, the second movable member is slidably connected to the shock absorption cylinder body and divides the second chamber into a recovery chamber and a compression chamber; the energy storage module includes an energy storage cylinder body having a third chamber and a third movable member, the third movable member is disposed in the third chamber and is slidably connected to the energy storage cylinder body, and the third movable member is connected to the pushing portion, and the third chamber is connected to the compression chamber and / or the recovery chamber at a portion of the third movable member facing away from the buffer cylinder body. With such a setting, the functions of shock absorption and buffering are achieved, and the first shock absorption module and the energy storage module are integrated into one body, reducing the externally occupied space and making the assembly easier.

Description

Technical Field

[0001] This application relates to the technical field of automobiles, and particularly to an integrated shock absorber. Background Art

[0002] When manufacturing automobiles, in order to meet the needs of user comfort, air springs and hydraulic shock absorbers are usually provided and connected in parallel between the vehicle wheels and the vehicle body. Among them, the air spring is used to relieve the impact force from the ground, and the hydraulic shock absorber is used to absorb the impact energy. However, when the air spring and the hydraulic shock absorber are arranged in parallel at the vehicle suspension part, the accumulator externally connected to the hydraulic shock absorber occupies a large space, and there are often problems with difficult assembly, which affects the assembly efficiency of the vehicle. Summary of the Invention

[0003] Based on this, it is necessary to provide an integrated shock absorber that simultaneously has the functions of an air spring and a hydraulic shock absorber and simplifies the assembly.

[0004] The integrated shock absorber includes a first shock module, a second shock module, and an energy storage module; the first shock module is provided with a buffer cylinder body having a first chamber, a first movable member, and a pushing portion. The first movable member and the pushing portion are arranged at intervals in a first direction, and at least the first movable member is slidably connected to the buffer cylinder body. One end of the first movable member facing away from the pushing portion is used to connect a load; the second shock module includes a shock cylinder body provided with a second chamber and a second movable member provided in the second chamber. The second movable member is slidably connected to the shock cylinder body and divides the second chamber into a recovery chamber and a compression chamber. A part of the second movable member extends out of the shock cylinder body from the recovery chamber and is used to connect the load; the energy storage module includes an energy storage cylinder body having a third chamber and a third movable member. The third movable member is provided in the third chamber and is slidably connected to the energy storage cylinder body, and the third movable member is connected to the pushing portion. The third chamber is connected to the compression chamber and / or the recovery chamber at a part of the third movable member facing away from the buffer cylinder body.

[0005] It is understandable that during the vibration reduction process, the first vibration reduction module and the second vibration reduction module respectively play a vibration reduction role. When subjected to vibration, the second vibration reduction module squeezes the compression chamber, and the medium in the compression chamber has a reaction force on the squeezing and thus plays a damping effect, which is beneficial to vibration reduction. At the same time, the medium in the compression chamber enters the third chamber, and the energy storage module plays a role of temporarily storing the medium. Since the third movable part of the energy storage module is connected to the push part, after the medium pressure in the third chamber increases, the third movable part drives the push part to move to reduce the space between the push part and the first movable part. The medium between the push part and the first movable part generates a reaction force after being squeezed, thereby achieving the effect of buffering vibration reduction. In other words, such a setting realizes the function of vibration reduction and buffering, and also integrates the first vibration reduction module and the energy storage module into one, reduces the space occupied by the outside, is conducive to adapting to the compact assembly environment of the automobile suspension, and makes assembly easier.

[0006] In one embodiment, at least a portion of the damping cylinder is assembled in the first cavity, one end of the damping cylinder is slidably connected to the first movable member, and the other end extends from the first cavity and is connected to the energy storage cylinder; the first movable member is provided with a first opening, and the second movable member is connected to the load through the first opening.

[0007] In one embodiment, the portion of the first chamber located between the first movable member and the pushing portion forms a buffer chamber, and the third chamber located at the portion of the third movable member away from the buffer cylinder body serves as an energy storage chamber, and the energy storage chamber is connected to the compression chamber; the third movable member is configured to move along the first direction in response to changes in pressure of the energy storage chamber and the buffer chamber.

[0008] In one embodiment, the cross-sectional area of ​​the buffer chamber is larger than the cross-sectional area of ​​the energy storage chamber.

[0009] In one embodiment, along the first direction, the pushing portion is integrally formed on the side of the buffer cylinder body facing the energy storage cylinder body; or, the pushing portion is installed in the first cavity and movably connected to the inner wall of the buffer cylinder body, the buffer cylinder body is fixedly connected to the energy storage cylinder body, and the side of the pushing portion facing away from the buffer cavity is jointly enclosed with the buffer cylinder body and the third movable part to form an auxiliary cavity.

[0010] In one embodiment, the first vibration reduction module is provided with a connecting arm, and the connecting arm is connected between the pushing portion and the third movable member.

[0011] In one of the embodiments, at least one of the damping cylinder and the second movable member is configured with an external oil passage.

[0012] In one embodiment, the damping cylinder block includes a first housing and a second housing. The first housing is slidably connected to the second movable member and encloses to form the compression chamber and the restoration chamber. A gap between the first housing and the second housing forms the external oil passage. The first housing is provided with a first oil port, which communicates with the compression chamber or the restoration chamber. The second housing is provided with a second oil port, and the external oil passage communicates between the first oil port and the second oil port.

[0013] In one embodiment, the first damping module is provided with an air connection port, and the air connection port communicates with the first chamber; the first chamber is inflated or deflated through the air connection port.

[0014] In one embodiment, the first damping module is provided with a first sealing structure. The first movable member extends into the first chamber, and the first sealing structure is pressed between the first movable member and the side wall of the buffer cylinder block; and / or, the first damping module is provided with a second sealing structure. The second sealing structure is located in the first chamber and is connected between the first movable member and the pushing portion. The second sealing structure is made of an elastic material and is attached to the inner side wall of the buffer cylinder block and / or the first movable member.

[0015] In one embodiment, the integrated damper further includes a first limiting member, which is arranged on one side of the energy storage cylinder block facing the buffer cylinder block and is used to limit the moving stroke of the pushing portion towards the third movable member and the moving stroke of the third movable member towards the pushing portion; and / or, the integrated damper further includes a second limiting member, which is connected to the damping cylinder block; the first movable member is provided with a limiting portion, and the limiting portion is used to abut against the second limiting member, and the second limiting member is used to limit the moving stroke of the first movable member along the first direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic diagram of the first embodiment of the integrated damper provided by the present application;

[0018] Figure 2 It is a schematic structural diagram of the first embodiment of the integrated damper provided by the present application;

[0019] Figure 3Schematic diagram of the second embodiment of the integrated shock absorber provided by this application;

[0020] Figure 4 Structural schematic diagram of a sealing method in the second embodiment of the integrated shock absorber provided by this application;

[0021] Figure 5 Structural schematic diagram of another sealing method in the second embodiment of the integrated shock absorber provided by this application;

[0022] Figure 6 Structural schematic diagram of an external oil passage implementation method in the second embodiment of the integrated shock absorber provided by this application.

[0023] Reference numerals: 100, integrated shock absorber; 10, first shock absorption module; 11, buffer cylinder body; 12, first moving part; 121, first opening; 122, limiting part; 13, pushing part; 14, connecting arm; 101, first chamber; 1011, buffer chamber; 1012, auxiliary chamber; 102, air intake port; 20, second shock absorption module; 21, shock absorption cylinder body; 211, first housing; 2111, first oil port; 212, second housing; 2121, second oil port; 22, second moving part; 201, second chamber; 2011, recovery chamber; 2012, compression chamber; 202, external oil passage; 30, energy storage module; 31, energy storage cylinder body; 32, third moving part; 301, third chamber; 3011, energy storage chamber; 3012, second opening; 41, first sealing structure; 42, second sealing structure; 43, third sealing structure; 44, fourth sealing structure; 51, first limiting part; 511, first flow port; 52, second limiting part; 61, first buffer part; 611, second flow port; 62, second buffer part; 71, first adjusting component; 72, second adjusting component; 73, third adjusting component. Detailed implementation manners

[0024] To make the above objects, features, and advantages of this application more obvious and understandable, the following will describe the detailed implementation manners of this application with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of this application. Therefore, this application is not limited by the specific embodiments disclosed below.

[0025] It should be noted that when a component is referred to as being "fixed to" or "provided on" or "arranged on" another component, it can be directly on the other component or there can also be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the description of this application are only for illustrative purposes and do not represent the only implementation.

[0026] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0027] In this application, unless otherwise clearly specified and limited, the first feature may be in direct contact with the second feature "on" or "under" the second feature, or the first feature and the second feature may be in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature has a lower horizontal height than the second feature.

[0028] Unless otherwise defined, all technical and scientific terms used in the description of this application have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the description of this application are only for the purpose of describing specific implementations and are not intended to limit this application. The term "and / or" used in the description of this application includes any and all combinations of one or more of the related listed items.

[0029] Please refer to Figures 1 to 6 , this application provides an integrated shock absorber 100, which includes a first shock absorption module 10, a second shock absorption module 20 and an energy storage module 30. By integrating the energy storage module 30 and the first shock absorption module 10 into one body, this application reduces the overall occupied space on the basis of realizing the energy storage function of the energy storage module 30 and the shock absorption function of the first shock absorption module 10, making the assembly simpler.

[0030] The first damping module 10 is provided with a buffer cylinder body 11 having a first cavity 101, a first movable member 12, and a pushing portion 13. The first movable member 12 and the pushing portion 13 are arranged at intervals in a first direction. At least the first movable member 12 is slidably connected to the buffer cylinder body 11. One end of the first movable member 12 facing away from the pushing portion 13 is used to connect a load. In this way, when subjected to vibration impact, the external force of vibration causes at least one of the first movable member 12 and the pushing portion 13 to move closer to the other, squeezing the space between the first movable member 12 and the pushing portion 13, so that the medium between the first movable member 12 and the pushing portion 13 generates a reaction force, thereby achieving a damping effect. After the vibration stops, the external force of vibration disappears, and the first movable member 12 and the pushing portion 13 move away from each other under the pressure generated by the compression of the medium to achieve reset.

[0031] Further, the second damping module 20 includes a damping cylinder body 21 having a second cavity 201 and a second movable member 22 disposed in the second cavity 201. The second movable member 22 is slidably connected to the damping cylinder body 21 and divides the second cavity 201 into a recovery cavity 2011 and a compression cavity 2012. A part of the second movable member 22 extends out of the damping cylinder body 21 from the recovery cavity 2011 and is used to connect a load. In this way, when subjected to vibration, at least one of the second movable member 22 and the damping cylinder body 21 moves closer to the other to squeeze the medium in the compression cavity 2012, and the medium in the compression cavity 2012 correspondingly generates a reaction force, thereby achieving a damping effect. After the vibration stops, the compression cavity 2012 causes the second movable member 22 and the damping cylinder body 21 to move away from each other under the pressure generated by the compression of the internal medium to achieve reset.

[0032] Further, the energy storage module 30 includes an energy storage cylinder block 31 having a third chamber 301 and a third moving member 32. The third moving member 32 is disposed in the third chamber 301 and is slidably connected to the energy storage cylinder block 31. The third moving member 32 is connected to the pushing portion 13. The third chamber 301 is located at a portion of the third moving member 32 facing away from the buffer cylinder block 11 and is connected to the compression chamber 2012 and / or the restoration chamber 2011. Thus, when the medium in the compression chamber 2012 or the restoration chamber 2011 is squeezed, it will flow into the third chamber 301, increasing the pressure in the third chamber 301, thereby causing the third moving member 32 to move outward. The energy storage module 30 plays a role in temporarily storing energy. Also, since the third moving member 32 is connected to the pushing portion 13, it can drive the pushing portion 13 to move accordingly, and then cause the pushing portion 13 to move relative to the first moving member 12 to squeeze the medium between the pushing portion 13 and the first moving member 12. During the restoration process of the compression chamber 2012, the medium in the compression chamber 2012 pushes the second moving member 22 to move away from the damping cylinder block 21, increasing the cavity space of the compression chamber 2012. The energy storage module 30 releases energy and releases the medium into the compression chamber 2012 to achieve volume compensation. At the same time, as the energy storage module 30 releases energy externally, the pressure in the third chamber 301 decreases, and the pushing portion 13 drives the third moving member 32 to move toward the bottom of the energy storage cylinder block 31 to achieve simultaneous resetting of the third moving member 32 and the pushing portion 13.

[0033] In summary, by integrating the energy storage module 30 and the first damping module 10 into one body, while realizing the energy storage and release function of the energy storage module 30 and the buffer and damping function of the first damping module 10, the space occupied by the energy storage module 30 externally is reduced, making the assembly simpler. In addition, during installation, there is no need to assemble the energy storage module 30 and the first damping module 10 one by one. Only one installation is required to achieve simultaneous assembly and positioning of the energy storage module 30 and the first damping module 10. The operation is more convenient and conducive to improving the assembly efficiency.

[0034] For the convenience of description, the first direction is defined as the axial direction of the buffer cylinder block 11.

[0035] In a specific embodiment, the load is the body of an automobile. One end of the first moving member 12 facing away from the pushing portion 13 is connected to the body. A part of the second moving member 22 extends out of the damping cylinder block 21 from the restoration chamber 2011 to connect to the body. At the same time, the energy storage cylinder block 31 is connected to the wheel. Since the third chamber 301 is communicated with the compression chamber 2012 and / or the restoration chamber 2011, when the wheel is subjected to the impact force of vibration, the energy storage cylinder block 31 can transmit the external force of the wheel and at the same time receive the medium in the corresponding compression chamber 2012 and / or restoration chamber 2011.

[0036] Such as Figure 2 、 Figure 4 、 Figure 5 and Figure 6As shown, in a further embodiment, at least a part of the shock-absorbing cylinder body 21 is assembled in the first chamber 101. One end of the shock-absorbing cylinder body 21 is slidably connected to the first movable member 12, and the other end extends out of the first chamber 101 and is connected to the energy storage cylinder body 31. After the energy storage cylinder body 31 is subjected to the vibration impact of the wheel, it can transmit the force to the shock-absorbing cylinder body 21 to drive the shock-absorbing cylinder body 21 to move. The second movable member 22 has no time to react, and thus the medium in the compression chamber 2012 is squeezed to produce a damping effect.

[0037] As Figure 2 , Figure 4 , Figure 5 and Figure 6 shown, in a specific embodiment, the first movable member 12 is provided with a first opening 121. The second movable member 22 passes through the first opening 121 and is connected to the load. The first opening 121 can facilitate the assembly of the second movable member 22 and provide an avoidance space for the movement of the second movable member 22 in the first direction.

[0038] With such a setting, the space of the first chamber 101 of the first shock-absorbing module 10 is fully utilized, and the first shock-absorbing module 10 and the second shock-absorbing module 20 are also assembled together, reducing the space occupied by the second shock-absorbing module 20 externally, realizing the optimization of the further space layout, and also being more convenient for the assembly of the entire integrated shock absorber 100, improving the assembly efficiency.

[0039] As Figure 2 , Figure 4 , Figure 5 and Figure 6 shown, in a specific embodiment, the part of the first chamber 101 located between the first movable member 12 and the pushing part 13 forms a buffer chamber 1011. The part of the third chamber 301 facing away from the buffer cylinder body 11 of the third movable member 32 serves as an energy storage chamber 3011, and the energy storage chamber 3011 is communicated with the compression chamber 2012. Thus, the medium after being pressed in the compression chamber 2012 can enter the energy storage chamber 3011 for energy storage, and the energy storage chamber 3011 can also release the internal medium to the compression chamber 2012 when the space of the compression chamber 2012 expands. The energy storage chamber 3011 can play a role in compensating the volume and storing and releasing energy.

[0040] Further, the third movable member 32 is configured to move in the first direction in response to the pressure changes in the energy storage chamber 3011 and the buffer chamber 1011. When the pressure in the energy storage chamber 3011 is greater than that in the buffer chamber 1011, the third movable member 32 will drive the pushing part 13 to squeeze the buffer chamber 1011; conversely, when the pressure in the buffer chamber 1011 is greater than that in the energy storage chamber 3011, the pushing part 13 will drive the third movable member 32 to squeeze the energy storage chamber 3011 to expand the space of the buffer chamber 1011. By using the pressure difference between the energy storage chamber 3011 and the buffer chamber 1011, it is beneficial to accurately control the movement of the pushing part 13 to achieve the target shock-absorbing effect.

[0041] In the empty vehicle state, when the user enters the vehicle, the vehicle body weight increases, causing the first movable member 12 to move towards the pushing portion 13, and the second movable member 22 to move towards the compression chamber 2012 to squeeze the compression chamber 2012. The medium in the compression chamber 2012 has a reaction force to achieve a damping effect. At the same time, the medium in the compression chamber 2012 is squeezed into the energy storage chamber 3011, prompting the third movable member 32 to drive the pushing portion 13 to move towards the first movable member 12. At this time, the first movable member 12 and the pushing portion 13 move closer to each other and jointly squeeze the medium between the first movable member 12 and the pushing portion 13. The medium has a reaction force to achieve buffering and vibration reduction.

[0042] In a specific embodiment, the medium in the buffer chamber 1011 is gas, and vibration reduction is achieved through the compression of the gas; the media in the compression chamber 2012 and the restoration chamber 2011 are oil, and damping effects are generated by the oil. The medium in the corresponding energy storage chamber 3011 is also oil.

[0043] In a specific embodiment, the vibration damping cylinder body 21 is provided with an oil storage space, and the oil storage space is communicated between the compression chamber 2012 and the energy storage chamber 3011.

[0044] In a specific embodiment, since the oil is stored in the energy storage chamber 3011 and the gas is stored in the buffer chamber 1011, and the pressure of the oil is greater than the pressure of the gas, the cross-sectional area of the buffer chamber 1011 is larger than the cross-sectional area of the energy storage chamber 3011, so as to facilitate the balance between the gas pressure in the buffer chamber 1011 and the oil pressure in the energy storage chamber 3011.

[0045] Exemplarily, the pressure in the buffer chamber 1011 is P1, and the pressure in the energy storage chamber 3011 is P2; along the first direction, the cross-sectional area of the pushing portion 13 in the buffer chamber 1011 is A1, and the cross-sectional area of the energy storage chamber 3011 is A2. When the energy storage chamber 3011 and the buffer chamber 1011 are in a balanced state without being vibrated initially, .

[0046] As Figure 1 and Figure 2 shown, in the first embodiment, along the first direction, the pushing portion 13 is integrally formed on the side of the buffer cylinder body 11 facing the energy storage cylinder body 31, that is, the wall body of the buffer cylinder body 11 facing the energy storage cylinder body 31 is set as the pushing portion 13, and the third movable member 32 is connected to the pushing portion 13. At this time, the first chamber 101 is the buffer chamber 1011. Such a setting is beneficial to reducing the number of components, simplifying the installation, and reducing the manufacturing cost.

[0047] As Figure 2As shown in the figure, further, the first shock absorption module 10 is provided with an air intake port 102, and the air intake port 102 is communicated with the buffer cavity 1011; the buffer cavity 1011 is inflated or deflated through the air intake port 102. By inflating the buffer cavity 1011 through the air intake port 102, the pressure in the buffer cavity 1011 is increased, so that the pressure in the energy storage cavity 3011 is less than the pressure in the buffer cavity 1011, and at least one of the first moving member 12 and the pushing portion 13 moves in a direction away from the other; by deflating the air through the air intake port 102, the gas pressure in the buffer cavity 1011 can be reduced, so that the pressure in the energy storage cavity 3011 is greater than the pressure in the buffer cavity 1011, prompting at least one of the first moving member 12 and the pushing portion 13 to move in a direction closer to the other.

[0048] As Figure 2 shown, in a further embodiment, the first shock absorption module 10 is provided with a first sealing structure 41. The first moving member 12 extends into the first cavity 101, and the first sealing structure 41 is pressed between the first moving member 12 and the side wall of the buffer cylinder 11 to achieve the seal between the first moving member 12 and the buffer cylinder 11 and prevent gas leakage. Exemplarily, the first sealing structure 41 is set as a sealing ring, and at least one of the first moving member 12 and the buffer cylinder 11 is provided with a sealing groove for assembling the first sealing structure 41; alternatively, the first sealing structure 41 is set as a gasket. At this time, the air intake port 102 can be avoided from the first sealing structure 41.

[0049] In a specific embodiment, the first moving member 12 is sleeved on the buffer cylinder 11, that is, the inner side wall of the first moving member 12 is slidably connected to the outer side wall of the buffer cylinder 11. At this time, the first sealing structure 41 is pressed between the inner side wall of the first moving member 12 and the outer side wall of the buffer cylinder 11. As Figure 2 shown, in another specific embodiment, the first moving member 12 is slidably connected to the inner side wall of the buffer cylinder 11, and the first sealing structure 41 is pressed between the outer side wall of the first moving member 12 and the inner side wall of the buffer cylinder 11.

[0050] As Figure 2As shown, further, the first damping module 10 is provided with a second sealing structure 42. The second sealing structure 42 is located in the buffer cavity 1011 and is connected between the first movable member 12 and the pushing portion 13. The second sealing structure 42 is made of an elastic material and is attached to the inner side wall of the buffer cylinder 11 and / or the first movable member 12. At this time, the air intake port 102 is provided at the bottom of the buffer cylinder 11 to avoid the second sealing structure 42. In this way, the second sealing structure 42, the first movable member 12 and the pushing portion 13 enclose to form the buffer cavity 1011 to prevent the gas in the buffer cavity 1011 from leaking. And the second sealing structure 42 is made of an elastic material to adapt to the relative or opposite movement of the first movable member 12 and the pushing portion 13. The relative or opposite movement of the first movable member 12 and the pushing portion 13 will cause the second sealing structure 42 to have an elastic deformation. When the first movable member 12 and the pushing portion 13 are reset, the second sealing structure 42 can accelerate the reset speed under the action of the elastic force. Exemplarily, the second sealing structure 42 is made of a bladder skin.

[0051] In a specific embodiment, the first sealing structure 41 and the second sealing structure 42 can be separately provided or used simultaneously.

[0052] As Figures 3 to 6 shown, in the second embodiment, the pushing portion 13 is installed in the first cavity 101 and is movably connected to the inner side wall of the buffer cylinder 11, that is, the pushing portion 13 and the buffer cylinder 11 are separately provided. The buffer cylinder 11 is fixedly connected to the energy storage cylinder 31. The side of the pushing portion 13 facing away from the buffer cavity 1011 and the buffer cylinder 11 and the third movable member 32 together enclose to form an auxiliary cavity 1012. The on-off of the auxiliary cavity 1012 and the buffer cavity 1011 can be controlled to adjust the gas flow in the buffer cavity 1011, and further adjust the stiffness of the first damping module 10 to meet different damping requirements.

[0053] In the second embodiment, when the air intake port 102 is set at different positions, there are also certain differences in the way of inflating and deflating. As Figure 4 shown, when the air intake port 102 is set to communicate with the buffer cavity 1011, it is similar to the implementation manner of the air intake port 102 in the first embodiment and will not be elaborated here; as Figure 5 and Figure 6 shown, when the air intake port 102 is set to communicate with the auxiliary cavity 1012, the capacity of the auxiliary cavity 1012 can be adjusted. Specifically, when the air intake port 102 inflates the auxiliary cavity 1012, the capacity of the auxiliary cavity 1012 increases, and the pushing portion 13 and the third movable member 32 move away from each other. While the capacities of the buffer cavity 1011 and the energy storage cavity 3011 remain unchanged. When the air intake port 102 deflates the auxiliary cavity 1012, the capacity of the auxiliary cavity 1012 decreases, and the pushing portion 13 and the third movable member 32 move closer to each other. While the capacities of the buffer cavity 1011 and the energy storage cavity 3011 remain unchanged.

[0054] As Figures 4 to 6 shown, the first damping module 10 further includes a first adjusting component 71. The first adjusting component 71 is assembled on the pushing part 13 and is used to adjust the on-off between the buffer cavity 1011 and the auxiliary cavity 1012, so as to change the capacity and pressure of the buffer cavity 1011. When the first adjusting component 71 adjusts the connection between the buffer cavity 1011 and the auxiliary cavity 1012, the gas in the auxiliary cavity 1012 can enter the buffer cavity 1011, increasing the pressure in the buffer cavity 1011, making the volume of the buffer cavity 1011 larger and the volume of the auxiliary cavity 1012 smaller. Furthermore, the stiffness of the first damping module 10 is reduced, which is beneficial to meeting larger damping requirements and improving driving stability and comfort. When the first adjusting component 71 adjusts the disconnection between the buffer cavity 1011 and the auxiliary cavity 1012, the stiffness of the first damping module 10 is relatively high, meeting the requirements of specific working conditions. For example, during emergency braking, it switches to a high-stiffness mode to reduce the degree of the vehicle body diving forward. Exemplarily, the first adjusting component 71 is provided with an electromagnetic valve or the like, which can control the on-off of the fluid and adjust the flow rate.

[0055] As Figure 4 and Figure 6 shown, in a specific embodiment, the first damping module 10 is provided with a first sealing structure 41. The first movable part 12 extends into the first cavity 101, and the first sealing structure 41 is pressed between the first movable part 12 and the side wall of the buffer cylinder 11 to achieve sealing. The first sealing structure 41 in the second embodiment is similar to the first sealing structure 41 in the first embodiment and can refer to the first embodiment, so it will not be elaborated here.

[0056] In this case, the air intake port 102 can be connected to the buffer cavity 1011 or the auxiliary cavity 1012.

[0057] As Figure 5 shown, in a further embodiment, the first damping module 10 is provided with a second sealing structure 42. The second sealing structure 42 is located in the first cavity 101 and is connected between the first movable part 12 and the pushing part 13. The second sealing structure 42 is made of an elastic material and is attached to the inner side wall of the buffer cylinder 11 and / or the first movable part 12. At this time, the air intake port 102 is connected to the auxiliary cavity 1012 to avoid interference with the second sealing structure 42. The specific effect of the second sealing structure 42 can refer to the second sealing structure 42 in the first embodiment and will not be elaborated here.

[0058] The first sealing structure 41 and the second sealing structure 42 can be used alone or simultaneously, which is not limited here.

[0059] As Figure 2 , Figure 4 , Figure 5 andFigure 6 As shown, in an optional embodiment, the energy storage module 30 further includes a third sealing structure 43, and the third sealing structure 43 is pressed between the third movable member 32 and the side wall of the energy storage cylinder 31 to prevent the leakage of the hydraulic oil in the energy storage cavity 3011. Exemplarily, the third sealing structure 43 may adopt a sealing ring, and at least one of the corresponding energy storage cylinder 31 and the third movable member 32 is provided with a corresponding sealing groove for installing the sealing ring; alternatively, the third sealing structure 43 may also adopt a gasket.

[0060] As Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, in an optional embodiment, the first damping module 10 further includes a fourth sealing structure 44, and the fourth sealing structure 44 is pressed between the first movable member 12 and the side wall of the damping cylinder 21 to prevent the leakage of the gas in the buffer cavity 1011. Specifically, the fourth sealing structure 44 is similar to the first sealing structure 41 and the third sealing structure 43, so it will not be elaborated here again.

[0061] As Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, in a specific embodiment, the first damping module 10 is provided with a connecting arm 14, and the connecting arm 14 is connected between the pushing portion 13 and the third movable member 32 to make up for the distance between the pushing portion 13 and the third movable member 32. Specifically, the connecting arm 14 is integrally formed with the pushing portion 13. Of course, it may also be separately provided from the pushing portion 13.

[0062] As Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, in a further embodiment, the integrated shock absorber 100 further includes a first limiting member 51, and the first limiting member 51 is disposed on the side of the energy storage cylinder 31 facing the buffer cylinder 11 and is used to limit the moving stroke of the pushing portion 13 towards the third movable member 32 and the moving stroke of the third movable member 32 towards the pushing portion 13 to control the moving distance and achieve accurate positioning. Specifically, the first limiting member 51 is sleeved on the outside of the connecting arm 14.

[0063] As Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, in a specific embodiment, a second opening 3012 is provided on the side of the third cavity 301 facing the buffer cavity 1011, and the first limiting member 51 abuts against the edge of the first opening 121 and covers at least part of the first opening 121 to form a larger abutting area, facilitating the abutment of the first limiting member 51 against the pushing portion 13 or the abutment of the first limiting member 51 against the third movable member 32.

[0064] like Figures 4 to 6 As shown, in the above second embodiment, the first limiting member 51 is located in the auxiliary cavity 1012 , and the first limiting member 51 is provided with a first flow opening 511 to open up the space on both sides of the first limiting member 51 to form the auxiliary cavity 1012 .

[0065] like Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, in a further embodiment, the integrated shock absorber 100 further includes a first buffer 61; specifically, the first limiter 51 and at least one of the pushers 13 are connected with the first buffer 61; and / or, the first limiter 51 and one of the third movable members 32 are connected with the first buffer 61; in this way, the first buffer 61 can play a buffering role and reduce the impact force generated by direct contact during the limiting process. The first buffer 61 is usually made of elastic material such as rubber or polyurethane to ensure that it can be effectively deformed and quickly restored to its original state when under pressure. Correspondingly, when the first limiter 51 is connected to the first buffer 61, the first buffer 61 is also provided with a second flow port 611 to communicate with the first flow port 511.

[0066] like Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, in a further embodiment, the integrated shock absorber 100 also includes a second limit member 52, which is connected to the shock absorbing cylinder 21; the first movable member 12 is provided with a limit portion 122, which is used to abut against the second limit member 52, and the second limit member 52 is used to limit the movement stroke of the first movable member 12 along the first direction to control the movement distance of the first movable member 12 and prevent the first movable member 12 from falling off along the first direction.

[0067] like Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, in a specific embodiment, the first movable part 12 is provided with two spaced-apart limiting parts 122 along the first direction, and the second limiting part 52 is located between the two limiting parts 122, wherein the limiting part 122 close to the buffer cavity 1011 abuts against the second limiting part 52 to limit the first movable part 12 from slipping outward, and the limiting part 122 away from the buffer cavity 1011 abuts against the second limiting part 52 to prevent the first movable part 12 from falling into the buffer cylinder 11 in the direction of the buffer cavity 1011.

[0068] like Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, in a further embodiment, the integrated shock absorber 100 further includes a second buffer member 62. At least one of the limiting portion 122 and the second limiting member 52 is connected to the second buffer member 62, and the second buffer member 62 is located between the limiting portion 122 and the second limiting member 52. In this way, the second buffer member 62 can play a buffering role and reduce the impact force generated by direct contact during the limiting process. The specific setting can refer to the first buffer member 61 and will not be elaborated here.

[0069] As Figure 2 , Figure 4 , Figure 5 and Figure 6 shown, in an alternative embodiment, at least one of the shock absorber cylinder 21 and the second movable member 22 is configured with an external oil passage 202 to facilitate the input of hydraulic oil into and / or out of the compression chamber 2012 and / or the recovery chamber 2011, or to output hydraulic oil from the compression chamber 2012 and / or the recovery chamber 2011. In this way, the external oil passage 202 can be externally connected to a hydraulic pump, an energy storage chamber 3011, a valve system, etc. to increase or enhance the functions of the hydraulic shock absorber, such as functions of active damping adjustment, active work, etc. Specifically, through the setting of the external oil passage 202, the integrated shock absorber 100 can more flexibly control the damping characteristics to adapt to different road conditions and driving modes. Since this part of the content is well-known to those skilled in the art, it will not be elaborated here.

[0070] As Figure 2 , Figure 4 and Figure 5 shown, in a specific embodiment, the shock absorber cylinder 21 and the second movable member 22 are respectively provided with an external oil passage 202. The external oil passage 202 of the shock absorber cylinder 21 is communicated with the compression chamber 2012 to realize the input or output of the oil fluid in the compression chamber 2012; the external oil passage 202 provided on the second movable member 22 is communicated with the recovery chamber 2011 to realize the input or output of the oil fluid in the recovery chamber 2011.

[0071] As Figure 6As shown, in a specific embodiment, the shock-absorbing cylinder block 21 includes a first housing 211 and a second housing 212. The first housing 211 is slidably connected to the second movable member 22 and encloses a compression chamber 2012 and a return chamber 2011. The gap between the first housing 211 and the second housing 212 forms an external oil passage 202. The first housing 211 is provided with a first oil port 2111, and the first oil port 2111 communicates with the compression chamber 2012 or the return chamber 2011. The second housing 212 is provided with a second oil port 2121, and the external oil passage 202 communicates between the first oil port 2111 and the second oil port 2121. In this way, such a setting increases the space of the external oil passage 202, so that the oil enters the external oil passage 202 from the second oil port 2121, and after being buffered by the external oil passage 202, it then flows out from the first oil port 2111 to the compression chamber 2012 or the return chamber 2011, extending the flow path of the oil, having a certain buffering effect on the oil, avoiding direct impact caused by oil flow, reducing noise, and improving the riding comfort. At the same time, it is also beneficial to the heat dissipation of the oil, thereby improving the heat dissipation efficiency and avoiding performance degradation caused by too high oil temperature.

[0072] In a specific embodiment, the second oil port 2121 is arranged at the bottom of the shock-absorbing cylinder block 21 on the side close to the compression chamber 2012 for external connection. The first oil port 2111 communicates with the return chamber 2011 to facilitate the input of oil into the return chamber 2011. The second oil port 2121 is located below the first oil port 2111, so the oil needs to flow against the force of gravity to further slow down the flow speed of the oil and promote the heat dissipation of the oil.

[0073] As Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, in an alternative embodiment, the second shock-absorbing module 20 further includes a second adjustment component 72. The second adjustment component 72 is installed on the second movable member 22 to control the on-off between the return chamber 2011 and the compression chamber 2012 and adjust the flow rate. Exemplarily, the second adjustment component 72 includes a return valve, a flow valve, and a bypass hole. Among them, when the second movable member 22 is stretched outwards or the shock-absorbing cylinder block 21 moves away from the second movable member 22, the main valve plate of the return valve opens to open the return valve control, so that the return chamber 2011 and the compression chamber 2012 can be connected through the return valve hole, and the hydraulic oil in the return chamber 2011 flows into the compression chamber 2012 through the return valve hole and generates a return damping force. When the second movable member 22 is compressed inwards or the shock-absorbing cylinder block 21 moves towards the second movable member 22, the valve of the flow valve opens, and the oil flows from the compression chamber 2012 into the return chamber 2011 through the flow valve, and the oil generates a compression throttling pressure through the flow valve to achieve the damping effect. When the second movable member 22 changes direction, the bypass hole can provide a bypass flow of the oil, improve the smooth transition of the damping force, reduce the impact and vibration during direction change, and improve the riding comfort.

[0074] As Figure 2 , Figure 4 , Figure 5 and Figure 6 shown, in an alternative embodiment, the second damping module 20 further includes a third adjusting component 73. The third adjusting component 73 is installed on the damping cylinder block 21 to control the on-off between the compression chamber 2012 and the energy storage chamber 3011 and adjust the flow rate. Exemplarily, the third adjusting component 73 includes a compression valve, a compensation valve, a bypass hole, etc. Among them, when the damping cylinder block 21 moves under vibration and squeezes the compression chamber 2012, the oil pressure in the compression chamber 2012 increases, and the oil flows through the flow valve to the recovery chamber 2011. Since a part of the recovery chamber 2011 is occupied by the second moving part 22, the increased volume in the recovery chamber 2011 is smaller than the reduced volume in the compression chamber 2012. Therefore, a part of the oil pushes open the compression valve and flows into the energy storage chamber 3011. The throttling of the compression valve and the flow valve causes the damping force of the compression movement of the vehicle suspension.

[0075] When the second moving part 22 stretches outwards or the damping cylinder block 21 moves towards the energy storage chamber 3011, the volume of the recovery chamber 2011 decreases, the oil pressure increases, and the oil pushes open the recovery valve and flows into the compression chamber 2012. Since the second moving part 22 occupies a certain space, the oil flowing in from the recovery chamber 2011 is not enough to fill the increased volume of the compression chamber 2012. The oil in the energy storage chamber 3011 pushes open the compensation valve and flows into the compression chamber 2012 to make up for it. The throttling effect of the compensation valve causes the resistance of the extension movement of the vehicle suspension, and the vibration energy decays.

[0076] The process of the second moving part 22 stretching outwards or the damping cylinder block 21 moving away from the second moving part 22 is defined as the recovery stroke. The opening valve speed is set during the recovery stroke. The second adjusting component 72 is also provided with a normally open throttle hole. When the moving speed of the second moving part 22 or the damping cylinder block 21 is lower than the opening valve speed, the recovery valve does not open, and the oil in the recovery chamber 2011 flows into the compression chamber 2012 from the normally open throttle hole, generating a throttling pressure; when the moving speed of the second moving part 22 or the damping cylinder block 21 is greater than the opening valve speed, the bypass hole starts to participate in the oil flow, providing an additional flow channel, thereby increasing the oil flow rate and reducing the pressure drop of a single normally open throttle hole.

[0077] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0078] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the patent protection scope of the present application shall be subject to the appended claims.

Claims

1. An integrated shock absorber, characterized in that: include: A first vibration reduction module (10) is provided with a buffer cylinder (11) having a first cavity (101), a first movable member (12) and a pushing portion (13), wherein the first movable member (12) and the pushing portion (13) are arranged at intervals along a first direction, at least the first movable member (12) is slidably connected to the buffer cylinder (11), and an end of the first movable member (12) away from the pushing portion (13) is used for connecting a load; A second vibration reduction module (20) comprises a vibration reduction cylinder (21) provided with a second chamber (201) and a second movable member (22) provided in the second chamber (201), wherein the second movable member (22) is slidably connected to the vibration reduction cylinder (21) and divides the second chamber (201) into a restoring chamber (2011) and a compression chamber (2012), and a portion of the second movable member (22) extends from the restoring chamber (2011) out of the vibration reduction cylinder (21) for connecting to the load; An energy storage module (30) comprises an energy storage cylinder (31) having a third chamber (301) and a third movable member (32), wherein the third movable member (32) is disposed in the third chamber (301) and is slidably connected to the energy storage cylinder (31), and the third movable member (32) is connected to the pushing portion (13), and the third chamber (301) is located at a portion of the third movable member (32) away from the buffer cylinder (11) and is connected to the compression chamber (2012) and / or the recovery chamber (2011); The portion of the first chamber (101) located between the first movable member (12) and the pushing portion (13) forms a buffer chamber (1011); the portion of the third chamber (301) located at the third movable member (32) away from the buffer cylinder (11) serves as an energy storage chamber (3011); the energy storage chamber (3011) is communicated with the compression chamber (2012); the third movable member (32) is configured to move along the first direction in response to changes in pressure of the energy storage chamber (3011) and the buffer chamber (1011); the energy storage module (30) is integrated with the first vibration reduction module (10), thereby reducing the space occupied by the energy storage module (30); The cross-sectional area of ​​the buffer cavity (1011) is greater than the cross-sectional area of ​​the energy storage cavity (3011); The first direction is defined as the axial direction of the buffer cylinder (11).

2. The integrated vibration absorber according to claim 1, characterized in that: At least part of the vibration-damping cylinder (21) is assembled in the first cavity (101); one end of the vibration-damping cylinder (21) is slidably connected to the first movable member (12), and the other end extends out of the first cavity (101) and is connected to the energy storage cylinder (31); The first movable member (12) is provided with a first opening (121), and the second movable member (22) passes through the first opening (121) to be connected to the load.

3. The integrated vibration absorber according to claim 1, characterized in that: Along the first direction, the pushing portion (13) is integrally formed on a side of the buffer cylinder (11) facing the energy storage cylinder (31); or, the pushing portion (13) is installed in the first cavity (101) and movably connected to the inner wall of the buffer cylinder (11), the buffer cylinder (11) and the energy storage cylinder (31) are fixedly connected, and a side of the pushing portion (13) facing away from the buffer cavity (1011) is jointly surrounded by the buffer cylinder (11) and the third movable member (32) to form an auxiliary cavity (1012).

4. The integrated vibration absorber according to claim 1, characterized in that: The first vibration reduction module (10) is provided with a connecting arm (14), and the connecting arm (14) is connected between the pushing portion (13) and the third movable member (32).

5. The integrated vibration absorber according to claim 1, characterized in that: At least one of the vibration-damping cylinder (21) and the second movable member (22) is configured with an external oil passage (202).

6. The integrated vibration absorber according to claim 5, characterized in that: The damping cylinder (21) comprises a first shell (211) and a second shell (212); the first shell (211) is slidably connected to the second movable member (22) and surrounds the compression chamber (2012) and the restoring chamber (2011); a gap between the first shell (211) and the second shell (212) forms the external oil passage (202); the first shell (211) is provided with a first oil port (2111), the first oil port (2111) is connected to the compression chamber (2012) or the restoring chamber (2011); the second shell (212) is provided with a second oil port (2121), the external oil passage (202) is connected between the first oil port (2111) and the second oil port (2121).

7. The integrated vibration absorber according to claim 1, characterized in that: The first vibration reduction module (10) is provided with an air inlet (102), the air inlet (102) being in communication with the first cavity (101); the first cavity (101) is inflated or deflated through the air inlet (102).

8. The integrated vibration absorber according to claim 1, characterized in that: The first vibration reduction module (10) is provided with a first sealing structure (41), the first movable member (12) extends into the first cavity (101), and the first sealing structure (41) is pressed tightly between the first movable member (12) and the side wall of the buffer cylinder (11); and / or, The first vibration reduction module (10) is provided with a second sealing structure (42), the second sealing structure (42) is located in the first cavity (101) and connected between the first movable part (12) and the pushing part (13), the second sealing structure (42) is made of elastic material and is attached to the inner side wall of the buffer cylinder (11) and / or the first movable part (12).

9. The integrated vibration absorber according to claim 1, characterized in that: The integrated shock absorber further comprises a first limiting member (51), the first limiting member (51) being arranged on a side of the energy storage cylinder (31) facing the buffer cylinder (11) and being used for limiting a movement stroke of the pushing portion (13) toward the third movable member (32) and a movement stroke of the third movable member (32) toward the pushing portion (13); and / or, The integrated shock absorber further comprises a second limiting member (52), the second limiting member (52) being connected to the shock absorbing cylinder (21); the first movable member (12) is provided with a limiting portion (122), the limiting portion (122) being used for abutting against the second limiting member (52), the second limiting member (52) being used for limiting the movement stroke of the first movable member (12) along the first direction.

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