Integrated shock absorber

Abstract

The invention relates to an integrated shock absorber which comprises a first shock absorption module, a second shock absorption module and an energy storage module. The first vibration reduction module is provided with a buffering cylinder body with a first cavity, a first movable part and a pushing part, the first movable part and the pushing part are arranged in a spaced mode in the first direction, and at least the first movable part is slidably connected to the buffering cylinder body; the second vibration reduction module comprises a vibration reduction cylinder body provided with a second cavity and a second movable part arranged in the second cavity, and the second movable part is in sliding connection with the vibration reduction cylinder body and divides the second cavity into a recovery cavity and a compression cavity; the energy storage module comprises an energy storage cylinder with a third cavity and a third movable part, the third movable part is arranged in the third cavity and slidably connected with the energy storage cylinder, the third movable part is connected with the pushing part, and the part, located on the third movable part and deviating from the buffering cylinder, of the third cavity is connected with the compression cavity and / or the recovery cavity. By means of the arrangement, the damping and buffering functions are achieved, the first damping module and the energy storage module are integrated, the external occupied space is reduced, and assembling is easier.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to an integrated shock absorber. Background Art

[0002] When manufacturing cars, in order to meet the needs of user comfort, air springs and hydraulic shock absorbers are usually installed and connected in parallel between the car wheels and the car body. The air springs relieve the impact force from the ground, and the hydraulic shock absorbers absorb the impact force. However, when air springs and hydraulic shock absorbers are arranged in parallel on the suspension part of the car, the accumulators connected to the hydraulic shock absorbers take up a large space, which often makes assembly difficult and affects the assembly efficiency of the car. Summary of the invention

[0003] Based on this, it is necessary to provide an integrated shock absorber to have the functions of both an air spring and a hydraulic shock absorber and to simplify assembly.

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

[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 body includes a first shell and a second shell, the first shell is slidably connected to the second movable part and encloses the compression chamber and the restoring chamber, the gap between the first shell and the second shell forms the external oil channel, the first shell is provided with a first oil port, the first oil port is connected to the compression chamber or the restoring chamber, the second shell is provided with a second oil port, and the external oil channel is connected between the first oil port and the second oil port.

[0013] In one of the embodiments, the first vibration reduction module is provided with an air inlet, and the air inlet is communicated with the first cavity; the first cavity is inflated or deflated through the air inlet.

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

[0015] In one embodiment, the integrated shock absorber also includes a first limit member, which is arranged on the side of the energy storage cylinder body facing the buffer cylinder body and is used to limit the moving stroke of the pushing part toward the third movable part and the moving stroke of the third movable part toward the pushing part; and / or, the integrated shock absorber also includes a second limit member, which is connected to the shock absorbing cylinder body; the first movable part is provided with a limit member, which is used to abut against the second limit member, and the second limit member is used to limit the moving stroke of the first movable part 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 the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of a first embodiment of an integrated vibration absorber provided in this application; Figure 2 A schematic structural diagram of a first embodiment of the integrated shock absorber provided in the present application; Figure 3 A schematic diagram of a second embodiment of an integrated vibration absorber provided in this application; Figure 4 A structural schematic diagram of a sealing method in the second embodiment of the integrated shock absorber provided in the present application; Figure 5 A schematic structural diagram of another sealing method in the second embodiment of the integrated shock absorber provided in the present application; Figure 6 This is a schematic structural diagram of an external oil passage implementation in the second embodiment of the integrated shock absorber provided in the present application.

[0018] Reference numerals: 100, integrated shock absorber; 10, first shock-absorbing module; 11, buffer cylinder; 12, first movable member; 121, first opening; 122, limiting portion; 13, pushing portion; 14, connecting arm; 101, first cavity; 1011, buffer cavity; 1012, auxiliary cavity; 102, air inlet; 20, second shock-absorbing module; 21, shock-absorbing cylinder; 211, first housing; 2111, first oil port; 212, second housing; 2121, second oil port; 22, second movable member; 201, second cavity; 2011, recovery cavity; 201 2. Compression chamber; 202. External oil channel; 30. Energy storage module; 31. Energy storage cylinder; 32. Third movable 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 member; 511. First flow port; 52. Second limiting member; 61. First buffer member; 611. Second flow port; 62. Second buffer member; 71. First adjusting component; 72. Second adjusting component; 73. Third adjusting component. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0020] It should be noted that when a component is referred to as being "fixed on" or "set on" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0022] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0023] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0024] See also Figures 1 to 6 The present application provides an integrated shock absorber 100, which includes a first shock absorber module 10, a second shock absorber module 20 and an energy storage module 30. The present application integrates the energy storage module 30 with the first shock absorber module 10 to reduce the overall occupied space and make assembly simpler while realizing the energy storage function of the energy storage module 30 and the vibration reduction function of the first shock absorber module 10.

[0025] The first vibration reduction module 10 is provided with a buffer cylinder 11 having a first cavity 101, a first movable member 12 and a push portion 13. The first movable member 12 and the push portion 13 are arranged at intervals along the first direction. At least the first movable member 12 is slidably connected to the buffer cylinder 11, and the end of the first movable member 12 away from the push portion 13 is used to connect the load. In this way, when subjected to vibration impact, the external force of the vibration prompts at least one of the first movable member 12 and the push portion 13 to move toward the other, squeezing the space between the first movable member 12 and the push portion 13, so that the medium between the first movable member 12 and the push portion 13 generates a reaction force, thereby achieving a vibration reduction effect. After the vibration stops, the external force of the vibration disappears, and the first movable member 12 and the push portion 13 move in opposite directions under the pressure generated by the compression of the medium to achieve resetting.

[0026] Furthermore, the second vibration reduction module 20 includes a vibration reduction cylinder 21 provided with a second cavity 201 and a second movable member 22 provided in the second cavity 201. The second movable member 22 is slidably connected to the vibration reduction cylinder 21 and divides the second cavity 201 into a recovery cavity 2011 and a compression cavity 2012. A portion of the second movable member 22 extends out of the vibration reduction cylinder 21 from the recovery cavity 2011 to connect the load. In this way, when subjected to vibration, at least one of the second movable member 22 and the vibration reduction cylinder 21 moves toward the other to squeeze the medium in the compression cavity 2012, and the medium in the compression cavity 2012 generates a reaction force in response, thereby achieving a vibration reduction effect. After the vibration stops, the compression cavity 2012 causes the second movable member 22 and the vibration reduction cylinder 21 to move in opposite directions under the pressure generated by the compression of the internal medium to achieve resetting.

[0027] Further, the energy storage module 30 includes an energy storage cylinder 31 having a third chamber 301 and a third movable member 32, the third movable member 32 is arranged 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 push part 13, and the third chamber 301 is located at the part 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. In this way, when the medium in the compression chamber 2012 or the recovery chamber 2011 is squeezed, it will flow into the third chamber 301, so that the pressure in the third chamber 301 increases, thereby prompting the third movable member 32 to move outward, and the energy storage module 30 plays a role in temporarily storing energy. Since the third movable member 32 is connected to the push part 13, it can drive the push part 13 to move accordingly, thereby causing the push part 13 to move relative to the first movable member 12 to squeeze the medium between the push part 13 and the first movable member 12. During the recovery process of the compression chamber 2012, the medium in the compression chamber 2012 pushes the second movable member 22 and the vibration reduction cylinder 21 to move in opposite directions, the cavity space of the compression chamber 2012 increases, and the energy storage module 30 releases energy to release the medium into the compression chamber 2012 to achieve volume compensation. At the same time, as the energy storage module 30 releases energy to the outside, the pressure in the third chamber 301 decreases, and the push part 13 drives the third movable member 32 to move toward the bottom of the energy storage cylinder 31, so as to achieve simultaneous reset of the third movable member 32 and the push part 13.

[0028] In summary, by integrating the energy storage module 30 with the first vibration reduction module 10, the energy storage module 30 can store and release energy, and the first vibration reduction module 10 can buffer and reduce vibration, while reducing the space occupied by the energy storage module 30, making assembly easier. In addition, during installation, there is no need to assemble the energy storage module 30 and the first vibration reduction 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 vibration reduction module 10, which makes the operation easier and helps improve assembly efficiency.

[0029] For the convenience of explanation, the first direction is defined as the axial direction of the buffer cylinder 11 .

[0030] In a specific embodiment, the load is a car body, the end of the first movable member 12 away from the pushing portion 13 is connected to the car body, a portion of the second movable member 22 extends from the recovery chamber 2011 out of the damping cylinder 21 to connect to the car body, and at the same time, the energy storage cylinder 31 is connected to the wheel. Since the third chamber 301 is connected to the compression chamber 2012 and / or the recovery chamber 2011, when the wheel is subjected to the impact force of vibration, the energy storage cylinder 31 can transmit the external force of the wheel and at the same time receive the corresponding medium in the compression chamber 2012 and / or the recovery chamber 2011.

[0031] like Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, in a further embodiment, at least a portion of the damping cylinder 21 is assembled in the first chamber 101, one end of the damping cylinder 21 is slidably connected to the first movable member 12, and the other end extends from the first chamber 101 and is connected to the energy storage cylinder 31. After being impacted by the vibration of the wheel, the energy storage cylinder 31 can transmit force to the damping cylinder 21 to drive the damping cylinder 21 to move, and the second movable member 22 has no time to react, so that the medium in the compression chamber 2012 is squeezed to produce a damping effect.

[0032] like Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, in a specific embodiment, the first movable member 12 is provided with a first opening 121, and the second movable member 22 is connected to the load through the first opening 121. The first opening 121 can facilitate the assembly of the second movable member 22 and provide an avoidance space for the second movable member 22 to move along the first direction.

[0033] This arrangement makes full use of the space of the first cavity 101 of the first vibration damping module 10, and the first vibration damping module 10 and the second vibration damping module 20 are also assembled together, reducing the space occupied by the second vibration damping module 20, achieving further optimization of the spatial layout, and making it easier to assemble the entire integrated shock absorber 100, thereby improving assembly efficiency.

[0034] like Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, in a specific embodiment, the first chamber 101 is located between the first movable member 12 and the pusher 13 to form a buffer chamber 1011, and the third chamber 301 is located at the portion of the third movable member 32 away from the buffer cylinder 11 as an energy storage chamber 3011, and the energy storage chamber 3011 is connected with the compression chamber 2012. In this way, the medium in the compression chamber 2012 after being pressurized 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 is expanded, and the energy storage chamber 3011 can play the role of compensating volume, storing energy and releasing energy.

[0035] Further, the third movable member 32 is configured to move along the first direction in response to the pressure change of 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 pusher 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 pusher 13 will drive the third movable member 32 to squeeze the energy storage chamber 3011 to expand the space of the buffer chamber 1011. The pressure difference between the energy storage chamber 3011 and the buffer chamber 1011 is used to accurately control the movement of the pusher 13 to achieve the target vibration reduction effect.

[0036] When the vehicle is empty, a user enters the vehicle and the weight of the vehicle increases, causing the first movable member 12 to move toward the pushing portion 13, and the second movable member 22 to move toward 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 toward 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.

[0037] In a specific embodiment, the medium in the buffer chamber 1011 is gas, and vibration reduction is achieved by compression of the gas; the medium in the compression chamber 2012 and the recovery chamber 2011 is oil, and a damping effect is produced by the oil, and the medium of the corresponding energy storage chamber 3011 is also oil.

[0038] In a specific embodiment, the vibration reduction cylinder 21 is provided with an oil storage space, and the oil storage space is connected between the compression chamber 2012 and the energy storage chamber 3011 .

[0039] In a specific embodiment, since oil is stored in the energy storage chamber 3011 and gas is stored in the buffer chamber 1011, the pressure of the oil is greater than the pressure of the gas. Therefore, the cross-sectional area of ​​the buffer chamber 1011 is greater than the cross-sectional area of ​​the energy storage chamber 3011, so as to facilitate the gas pressure in the buffer chamber 1011 and the oil pressure in the energy storage chamber 3011 to reach a balance.

[0040] 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 push 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 not initially vibrated and maintain a balanced state, .

[0041] like Figure 1 and Figure 2 As shown, in the first embodiment, along the first direction, the pushing portion 13 is integrally formed on the side of the buffer cylinder 11 facing the energy storage cylinder 31, that is, the wall of the buffer cylinder 11 facing the energy storage cylinder 31 is set as the pushing portion 13, and the third movable part 32 is connected to the pushing portion 13. At this time, the first cavity 101 is the buffer cavity 1011. This arrangement is conducive to reducing the number of components, simplifying installation, and reducing manufacturing costs.

[0042] like Figure 2As shown, further, the first vibration reduction module 10 is provided with an air inlet 102, and the air inlet 102 is connected to the buffer chamber 1011; the buffer chamber 1011 is inflated or deflated through the air inlet 102, and the buffer chamber 1011 is inflated through the air inlet 102 to increase the pressure in the buffer chamber 1011, so that the pressure in the energy storage chamber 3011 is less than the pressure in the buffer chamber 1011, and at least one of the first movable member 12 and the pushing portion 13 moves in a direction away from the other; by deflation through the air inlet 102, the gas pressure in the buffer chamber 1011 can be reduced, so that the pressure in the energy storage chamber 3011 is greater than the pressure in the buffer chamber 1011, prompting at least one of the first movable member 12 and the pushing portion 13 to move in a direction close to the other.

[0043] like Figure 2 As shown, in a further embodiment, 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 between the first movable member 12 and the side wall of the buffer cylinder 11 to achieve sealing between the first movable member 12 and the buffer cylinder 11 to prevent gas leakage. Exemplarily, the first sealing structure 41 is set as a sealing ring, and at least one of the first movable member 12 and the buffer cylinder 11 is provided with a sealing groove to assemble the first sealing structure 41; or, the first sealing structure 41 is set as a sealing pad. At this time, the air inlet 102 can avoid the first sealing structure 41.

[0044] In a specific embodiment, the first movable member 12 is sleeved on the buffer cylinder 11, that is, the inner wall of the first movable member 12 is slidably connected to the outer wall of the buffer cylinder 11, and at this time, the first sealing structure 41 is pressed between the inner wall of the first movable member 12 and the outer wall of the buffer cylinder 11. Figure 2 As shown, in another specific embodiment, the first movable member 12 is slidably connected to the inner wall of the buffer cylinder 11 , and the first sealing structure 41 is pressed between the outer wall of the first movable member 12 and the inner wall of the buffer cylinder 11 .

[0045] like Figure 2As shown, further, the first vibration reduction module 10 is provided with a second sealing structure 42, the second sealing structure 42 is located in the buffer cavity 1011 and connected between the first movable part 12 and the push part 13, the second sealing structure 42 is made of elastic material and is attached to the inner wall of the buffer cylinder 11 and / or the first movable part 12, at this time, the air inlet 102 is arranged 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 part 12 and the push part 13 are surrounded to form the buffer cavity 1011 to avoid gas leakage in the buffer cavity 1011, and the second sealing structure 42 is made of elastic material to adapt to the relative or opposite movement of the first movable part 12 and the push part 13, the relative or opposite movement of the first movable part 12 and the push part 13 will cause the second sealing structure 42 to produce elastic deformation, when the first movable part 12 and the push part 13 are reset, the second sealing structure 42 can accelerate the reset speed under the action of elastic force. Exemplarily, the second sealing structure 42 is a bladder skin.

[0046] In a specific embodiment, the first sealing structure 41 and the second sealing structure 42 can be provided separately or used simultaneously.

[0047] like Figures 3 to 6 As shown, in the second embodiment, the push part 13 is installed in the first cavity 101 and movably connected to the inner wall of the buffer cylinder 11, that is, the push part 13 and the buffer cylinder 11 are separately arranged. The buffer cylinder 11 is fixedly connected to the energy storage cylinder 31, and the side of the push part 13 away from the buffer cavity 1011 is jointly surrounded by the buffer cylinder 11 and the third movable part 32 to form an auxiliary cavity 1012, which can control the opening and closing of the auxiliary cavity 1012 and the buffer cavity 1011 to adjust the gas flow in the buffer cavity 1011, and then adjust the stiffness of the first vibration reduction module 10 to meet different vibration reduction requirements.

[0048] In the second embodiment, the position of the air inlet 102 is different, and the way of inflation and deflation is also different. Figure 4 As shown, when the air inlet 102 is arranged to communicate with the buffer chamber 1011, the implementation of the air inlet 102 is similar to that of the first embodiment, and will not be described in detail here; Figure 5 and Figure 6 As shown, when the air inlet 102 is configured to be connected to the auxiliary chamber 1012, the capacity of the auxiliary chamber 1012 can be adjusted. Specifically, when the air inlet 102 inflates the auxiliary chamber 1012, the capacity of the auxiliary chamber 1012 increases, the pushing portion 13 and the third movable member 32 move opposite to each other, while the capacities of the buffer chamber 1011 and the energy storage chamber 3011 remain unchanged; when the auxiliary chamber 1012 is deflated through the air inlet 102, the capacity of the auxiliary chamber 1012 decreases, the pushing portion 13 and the third movable member 32 move closer to each other, while the capacities of the buffer chamber 1011 and the energy storage chamber 3011 remain unchanged.

[0049] like Figures 4 to 6 As shown, the first vibration damping module 10 also includes a first adjustment component 71, which is assembled on the push part 13 and is used to adjust the connection between the buffer chamber 1011 and the auxiliary chamber 1012 to change the capacity and pressure of the buffer chamber 1011. When the first adjustment component 71 adjusts the connection between the buffer chamber 1011 and the auxiliary chamber 1012, the gas in the auxiliary chamber 1012 can enter the buffer chamber 1011, increasing the pressure in the buffer chamber 1011, so that the volume of the buffer chamber 1011 becomes larger, while the volume of the auxiliary chamber 1012 becomes smaller, thereby reducing the stiffness of the first vibration damping module 10, which is conducive to meeting greater vibration damping requirements and improving driving stability and comfort. When the first adjustment component 71 adjusts the disconnection between the buffer chamber 1011 and the auxiliary chamber 1012, the stiffness of the first vibration damping module 10 is relatively high, which is in line with the requirements of specific working conditions, such as switching to a high stiffness mode during emergency braking to reduce the degree of "diving" of the vehicle body forward. Exemplarily, the first regulating component 71 is provided with a solenoid valve or the like, which can control the flow of the fluid and adjust the flow rate.

[0050] like Figure 4 and Figure 6 As shown, in a specific embodiment, the first vibration reduction 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 body 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 be referred to the first embodiment, which will not be described here.

[0051] In this case, the air inlet 102 may be in communication with the buffer cavity 1011 or with the auxiliary cavity 1012 .

[0052] like Figure 5 As shown, in a further embodiment, 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 member 12 and the pusher 13, and the second sealing structure 42 is made of elastic material and is attached to the inner wall of the buffer cylinder 11 and / or the first movable member 12. At this time, the air inlet 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 repeated here.

[0053] The first sealing structure 41 and the second sealing structure 42 can be used alone or simultaneously, which is not limited here.

[0054] like Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, in an optional embodiment, the energy storage module 30 further includes a third sealing structure 43, which is pressed between the third movable member 32 and the side wall of the energy storage cylinder 31 to prevent leakage of oil in the energy storage chamber 3011. Exemplarily, the third sealing structure 43 may be 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 to install the sealing ring; or, the third sealing structure 43 may also be a sealing gasket.

[0055] like Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, in an optional embodiment, the first vibration reduction module 10 further includes a fourth sealing structure 44, which is pressed between the first movable member 12 and the side wall of the vibration reduction cylinder 21 to prevent gas leakage in the buffer chamber 1011. Specifically, the fourth sealing structure 44 is similar to the first sealing structure 41 and the third sealing structure 43, so it is not repeated again.

[0056] like Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, in a specific embodiment, 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 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, and of course, it can also be separately provided with the pushing portion 13.

[0057] 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 limiter 51, which is disposed on the side of the energy storage cylinder 31 facing the buffer cylinder 11 and is used to limit the movement stroke of the pusher 13 toward the third movable member 32 and the movement stroke of the third movable member 32 toward the pusher 13, so as to control the moving distance and achieve accurate positioning. Specifically, the first limiter 51 is sleeved on the outer side of the connecting arm 14.

[0058] like 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 blocks at least a portion of the first opening 121 to form a larger abutting area, which is convenient for the first limiting member 51 to abut against the pushing portion 13, or the first limiting member 51 to abut against the third movable member 32.

[0059] 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 .

[0060] 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.

[0061] 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.

[0062] 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.

[0063] like Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, in a further embodiment, the integrated shock absorber 100 also includes a second buffer member 62, and at least one of the limiting portion 122 and the second limiting portion 52 is connected with the second buffer member 62, and the second buffer member 62 is located between the limiting portion 122 and the second limiting portion 52. In this way, the second buffer member 62 can play a buffering role to reduce the impact force generated by direct contact during the limiting process. The specific settings can refer to the first buffer member 61 and will not be repeated here.

[0064] like Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, in an optional embodiment, at least one of the damping cylinder 21 and the second movable member 22 is configured with an external oil passage 202 to facilitate the input of hydraulic oil into the compression chamber 2012 and / or the recovery chamber 2011, or the output of 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 strengthen the functions of the hydraulic shock absorber, such as active damping adjustment, active work, etc. Specifically, through the provision of the external oil passage 202, the integrated shock absorber 100 can achieve more flexible control of 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 repeated here.

[0065] like Figure 2 , Figure 4 and Figure 5 As shown, in a specific embodiment, the damping cylinder 21 and the second movable part 22 are respectively provided with an external oil passage 202, and the external oil passage 202 of the damping cylinder 21 is connected with the compression chamber 2012 to realize the input or output of the oil in the compression chamber 2012; the external oil passage 202 provided on the second movable part 22 is connected with the restoring chamber 2011 to realize the input or output of the oil in the restoring chamber 2011.

[0066] like Figure 6As shown, in a specific embodiment, the damping cylinder 21 includes a first shell 211 and a second shell 212. The first shell 211 is slidably connected to the second movable part 22 and encloses a compression chamber 2012 and a restoring chamber 2011. The gap between the first shell 211 and the second shell 212 forms an external oil passage 202. The first shell 211 is provided with a first oil port 2111, and 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. Thus, this arrangement 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 flows out from the first oil port 2111 to the compression chamber 2012 or the recovery chamber 2011 after being buffered by the external oil passage 202, thereby extending the oil flow path, having a certain buffering effect on the oil, avoiding direct impact of the oil flow, reducing noise, and improving riding comfort. At the same time, it is also conducive to the heat dissipation of the oil, thereby improving the heat dissipation efficiency and avoiding the performance degradation caused by excessive oil temperature.

[0067] In a specific embodiment, the second oil port 2121 is disposed at the bottom of the damping cylinder 21 near the compression chamber 2012 for external connection, and the first oil port 2111 is communicated with the recovery chamber 2011, so as to facilitate the input of oil into the recovery chamber 2011. The second oil port 2121 is located below the first oil port 2111, so the oil needs to overcome the gravity to flow, so as to further slow down the speed of the oil flow and promote the heat dissipation of the oil.

[0068] like Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, in an optional embodiment, the second damping module 20 further includes a second regulating assembly 72, which is installed on the second movable member 22 to control the on-off between the restoring chamber 2011 and the compression chamber 2012 and to adjust the flow rate. Exemplarily, the second regulating assembly 72 includes a restoring valve, a circulation valve and a bypass hole. When the second movable member 22 is stretched outward or the damping cylinder 21 moves away from the second movable member 22, the main valve plate of the restoring valve is opened to open the restoring valve control, so that the restoring chamber 2011 and the compression chamber 2012 can be connected through the restoring valve hole, and the hydraulic oil in the restoring chamber 2011 flows into the compression chamber 2012 through the restoring valve hole and generates a restoring damping force. When the second movable member 22 is compressed inward or the damping cylinder 21 is toward the second movable member 22, the valve of the circulation valve is opened, and the oil flows from the compression chamber 2012 into the restoring chamber 2011 through the circulation valve, and the oil generates a compression throttling pressure through the circulation valve to achieve a damping effect. When the second movable member 22 changes direction, the bypass hole can provide bypass flow of oil, improve the smooth transition of the damping force, reduce the impact and vibration during the change of direction, and improve the riding comfort.

[0069] like Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, in an optional embodiment, the second vibration reduction module 20 further includes a third adjustment component 73, which is installed on the vibration reduction cylinder 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 adjustment component 73 includes a compression valve, a compensation valve, a bypass hole, etc. Among them, when the vibration reduction cylinder 21 is moved by vibration to squeeze the compression chamber 2012, the oil pressure in the compression chamber 2012 increases, and the oil flows to the recovery chamber 2011 through the circulation valve. Since the recovery chamber 2011 is partially occupied by the second movable member 22, the increased volume in the recovery chamber 2011 is less than the reduced volume of the compression chamber 2012, so there is still a part of the oil pushing the compression valve and flowing into the energy storage chamber 3011. The throttling of the oil by the compression valve and the circulation valve creates a damping force on the compression movement of the automobile suspension.

[0070] When the second movable member 22 stretches outward or the damping cylinder 21 moves toward the energy storage chamber 3011, the volume of the restoring chamber 2011 decreases, the oil pressure increases, and the oil pushes the restoring valve open and flows into the compression chamber 2012. Since the second movable member 22 occupies a certain space, the oil flowing from the restoring chamber 2011 is not enough to fill the increase in the volume of the compression chamber 2012, and the oil in the energy storage chamber 3011 pushes the compensation valve open and flows into the compression chamber 2012 to replenish. The throttling effect of the compensation valve creates resistance to the extension movement of the automobile suspension, which attenuates the vibration energy.

[0071] The process of the second movable part 22 stretching outward or the damping cylinder 21 moving away from the second movable part 22 is defined as a recovery stroke. The valve opening speed is set in the recovery stroke. The second adjusting component 72 is also provided with a normally open throttle hole. When the moving speed of the second movable part 22 or the damping cylinder 21 is lower than the valve opening 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 to generate throttling pressure. When the moving speed of the second movable part 22 or the damping cylinder 21 is greater than the valve opening speed, the bypass hole begins to participate in the flow of the oil, providing an additional flow channel, thereby increasing the oil flow rate and reducing the pressure drop of a single normally open throttle hole.

[0072] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, 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, they should be considered to be within the scope of this specification.

[0073] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached 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); the third movable member (32) is disposed in the third chamber (301) and is slidably connected to the energy storage cylinder (31); the third movable member (32) is connected to the pushing portion (13); the third chamber (301) is located at a portion of the third movable member (32) that is away from the buffer cylinder (11) and is connected to the compression chamber (2012) and / or the recovery chamber (2011).

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: 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 on the third movable member (32) away from the buffer cylinder body (11) serves as an energy storage chamber (3011); and 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).

4. The integrated vibration absorber according to claim 3, characterized in that: The cross-sectional area of ​​the buffer chamber (1011) is greater than the cross-sectional area of ​​the energy storage chamber (3011).

5. The integrated vibration absorber according to claim 3, 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).

6. 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).

7. 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).

8. The integrated vibration absorber according to claim 7, 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).

9. 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).

10. 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).

11. 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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