Decoupling structure, hydraulic mount and vehicle

Abstract

The utility model provides a decoupling structure, a hydraulic suspension and a vehicle, and relates to the technical field of automobile hydraulic suspensions.The decoupling structure is used for being installed in a containing cavity of the suspension and dividing the containing cavity into a first cavity body and a second cavity body, the decoupling structure comprises two flow channel plates, and the decoupling film is located between the two flow channel plates, an inertia channel used for communicating the first cavity and the second cavity is defined by the middles of the two flow channel plates, the decoupling film is located on the peripheral side of the inertia channel, and damping holes are formed in the portions, corresponding to the decoupling film, of the flow channel plates. The decoupling structure can solve the problem that when an existing hydraulic suspension is under the high-frequency working condition, hydraulic fluid flows to drive the whole decoupling film to float up and down to clap the runner plate, local deformation of the decoupling film is achieved, the up-down floating amplitude of the decoupling film is reduced, and therefore the abnormal sound risk between the decoupling film and the runner plate can be reduced, and the service life of the decoupling film is prolonged. And the NVH performance of the whole vehicle is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile hydraulic suspension, especially relates to a decoupling structure. BACKGROUND

[0002] With the rapid development of the automobile industry towards high power density and light weight, the suspension system as the core damping device of the automobile power assembly, its core function lies in realizing the bidirectional isolation and dynamic support of the power system vibration energy. At the same time, as the key component connecting the power assembly and the frame, the device not only needs to bear the static load of the power assembly and the transmission system, but also needs to implement accurate control on multidirectional vibration under complex working conditions, and significantly improve the NVH (Noise, Vibration, Harshness) performance of the vehicle by optimizing the vibration transmission path.

[0003] Among them, the hydraulic suspension exhibits better dynamic response capability through the unique combination design of internal hydraulic fluid and elastic element, and when the power assembly produces severe vibration, the reciprocating flow of the hydraulic fluid in the closed chamber will form a controllable damping effect, which can not only quickly absorb impact energy, but also disperse the peak value of vibration transmission through the inertia delay characteristics of the hydraulic fluid.

[0004] This design not only can significantly reduce the vibration impact intensity under the scenes of power assembly start-stop, sudden acceleration or bumpy road, but also can maintain more stable vibration isolation effect in a multi-frequency vibration environment. Since the hydraulic suspension is more adaptable in balancing support stiffness and dynamic vibration isolation demand, it has gradually become the mainstream solution to improve the ride comfort of modern vehicles.

[0005] However, in the existing hydraulic suspension, the decoupling structure usually includes a flow channel plate and a decoupling film located on the flow channel plate. Under high-frequency working conditions, when the hydraulic fluid flows up and down, it will drive the entire decoupling film to float up and down and hit the flow channel plate, thereby causing obvious abnormal noise problem, which directly affects the NVH performance of the vehicle. SUMMARY

[0006] Therefore, the utility model aims at providing a decoupling structure to reduce the abnormal noise risk and ensure the NVH performance of the vehicle.

[0007] To achieve the above purpose, the technical scheme of the utility model is as follows:

[0008] A decoupling structure is used to install into a containing cavity of a suspension, and the containing cavity is divided into a first cavity and a second cavity located on both sides of the decoupling structure.

[0009] The decoupling structure comprises two flow channel plates and a decoupling film between the two flow channel plates;

[0010] The middle part of each of the two flow channel plates is formed with an inertia channel for connecting the first cavity and the second cavity, the decoupling film is located at the circumferential side of the inertia channel, and each of the flow channel plates is provided with a damping hole corresponding to the decoupling film.

[0011] Further, the decoupling film is annular, the damping holes on each of the flow channel plates are a plurality of holes arranged around the inertia channel, and the damping holes on the two flow channel plates are arranged correspondingly; and / or, each side of the decoupling film is provided with a plurality of protrusions, and each of the plurality of protrusions on each side is used for abutting against the flow channel plate on the corresponding side.

[0012] Further, one of the two flow channel plates is provided with a positioning column, and the other of the two flow channel plates is provided with a positioning hole, the positioning column is inserted into the positioning hole, and the relative position of the two flow channel plates along the circumferential direction thereof can be limited.

[0013] The decoupling film is provided with an avoiding part for avoiding the positioning column.

[0014] Further, one of the two flow channel plates is provided with a first folded edge folded to one side of the flow channel plate, and the first folded edge is arranged on the outside of the other of the two flow channel plates.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] The decoupling structure separates the suspension accommodating cavity into a first cavity and a second cavity, and sets an inertia channel to connect the two cavities, when the suspension is excited by low frequency, the hydraulic fluid flows in the inertia channel to generate inertia force, and the inertia force interacts with the vibration excitation to consume vibration energy, thereby playing a role in attenuating vibration. Furthermore, the inertia channel is located in the middle part of the flow channel plate, the decoupling film and the damping hole are located at the circumferential side of the inertia channel, which is an optimization of the structure design of the flow channel plate, under the condition that the connecting area is the same, the distance between the damping holes can be increased, the problem that the hydraulic fluid flows to drive the entire decoupling film to float up and down to hit the flow channel plate under the high frequency working condition of the existing hydraulic suspension can be solved, when the hydraulic fluid flows up and down between the first cavity and the second cavity, the local deformation of the decoupling film can be realized, and the up and down floating amplitude of the decoupling film under the high frequency working condition can be effectively reduced, the collision between the decoupling film and the two flow channel plates is relieved, thereby the risk of abnormal sound can be reduced, and the NVH performance of the vehicle can be improved.

[0017] Secondly, the decoupling film is arranged in a ring shape, which can avoid large-area contact between the decoupling film and the flow channel plates, thereby reducing the knocking noise of the decoupling film between the two flow channel plates under high-frequency working conditions. Meanwhile, in combination with the arrangement of the damping holes being arranged around the inertial channels, the hydraulic fluid can flow more uniformly between the flow channel plates, the local flow can be prevented from being too large or too small, the stability and reliability of the decoupling film in operation can be improved, the flow capacity of the hydraulic fluid in the damping holes can be reduced under low-frequency working conditions, the hydraulic fluid is forced to flow back and forth in the inertial channels, and thus the vibration absorption efficiency of the system is strengthened. In addition, the damping holes on the two flow channel plates are arranged in correspondence, the smoothness and symmetry of the flow of the hydraulic fluid between the upper and lower flow channel plates can be ensured, the flow path and flow capacity of the hydraulic fluid can be accurately controlled, and thus the decoupling function can be better achieved.

[0018] Furthermore, the contact area between the decoupling film and the two flow channel plates is reduced by arranging a plurality of protrusions on the two sides of the decoupling film, so that the collision area between the decoupling film and the two flow channel plates during vibration can be reduced, and the abnormal noise caused by the collision can be reduced.

[0019] In addition, the cooperation of the positioning column and the positioning hole can accurately determine the relative position of the two flow channel plates, can prevent assembly errors caused by position deviation during assembly, and thus can improve the assembly accuracy of the entire device, can ensure that the flow channels between the flow channel plates can be accurately connected, and can ensure the smooth flow of the hydraulic fluid in the flow channels. Meanwhile, by limiting the relative position of the two flow channel plates along the circumferential direction of the two flow channel plates, the two flow channel plates can be kept relatively fixed during operation, the stability of the overall structure can be enhanced, the relative displacement between the flow channel plates caused by factors such as vibration and external force can be reduced, and the leakage of the hydraulic fluid can be prevented.

[0020] In addition, the first flange folded to one side of one of the two flow channel plates can block the other flow channel plate, so that wear between the blocked flow channel plate and the hydraulic suspension can be avoided, and liquid leakage can be avoided. Meanwhile, when the vibration load is borne, the first flange can serve as a solid barrier to prevent unnecessary rubbing of the blocked flow channel plate in the hydraulic suspension, so that the pressing force between the blocked flow channel plate and the hydraulic suspension can be well maintained, and thus the risk of liquid leakage can be reduced.

[0021] In addition, another purpose of the utility model is to provide a hydraulic suspension, which comprises the decoupling structure described above, further comprises a shell, a rubber main spring and a leather cup which form the containing cavity together with the shell, and a connecting part in the inner core of the rubber main spring is arranged for connecting with a power assembly.

[0022] Further, the two ends of the rubber main spring are vulcanization connected with the shell and the inner core respectively; and / or, a recess is arranged on the side of the rubber main spring facing the accommodating cavity, and the recess is recessed away from the side of the accommodating cavity.

[0023] Further, a limiting portion is arranged on the inner core, and a first limiting fitting portion and a second limiting fitting portion are arranged at intervals on the shell; the first limiting fitting portion and the second limiting fitting portion are respectively located on the two sides of the limiting portion along the suspension axial direction, and are used for limiting the limit position of the rubber main spring moving along the suspension axial direction.

[0024] Further, the limiting portion comprises a limiting plate connected to the inner core, and an elastic body wrapped on at least part of the limiting plate; and / or, the first limiting fitting portion comprises a second flange arranged on the side of the shell provided with the rubber main spring, the second limiting fitting portion comprises a limiting fitting plate arranged at an interval from the second flange, and the limiting fitting plate is connected to the shell through a supporting column arranged on the side of the limiting fitting plate.

[0025] Further, the edge of the leather cup is provided with a third flange folded to one side, and the third flange is clamped between the shell and the decoupling structure; and / or, the side of the shell provided with the leather cup is provided with a fourth flange bent inward, and the side of the leather cup away from the rubber main spring is provided with a blocking ring, and the blocking ring is clamped between the fourth flange and the leather cup.

[0026] The hydraulic suspension disclosed by the utility model can reduce the abnormal sound risk of the hydraulic suspension under high-frequency working conditions, and improve the NVH performance of the whole vehicle. The accommodating cavity formed by the shell, the rubber main spring and the leather cup is filled with hydraulic fluid, the above-mentioned decoupling structure is integrated in the accommodating cavity, the flow energy of the hydraulic fluid between the inertia channel or the decoupling membrane is consumed, and the abnormal sound generated by high-frequency vibration is further attenuated.

[0027] Meanwhile, the connecting portion on the inner core is directly hard-connected with the power assembly, high-rigid support is provided, the positioning of the power assembly is accurate, the static load and dynamic torque of the power assembly can be borne, the vibration of the power assembly can be effectively transmitted to the suspension, and the damping and vibration isolation are realized through the synergistic effect of the decoupling structure, the rubber main spring and other components. The rubber main spring has a certain elastic deformation capacity, can absorb part of the vibration energy, the decoupling structure further attenuates the vibration, the influence of the vibration of the power assembly on other components of the vehicle is reduced, and the comfort and reliability of the vehicle are improved.

[0028] Secondly, the rubber main spring is connected with the shell and the inner core through vulcanization, which is very firm and can ensure that the rubber main spring will not be separated from the shell and the inner core during long-term use, maintaining the structural integrity and performance stability of the hydraulic mount. The recess on the rubber main spring can reduce the stiffness of the rubber main spring in the radial direction, avoiding damage caused by excessive local stress, and improving the carrying capacity and stability of the product. At the same time, it can also increase the deformation space of the rubber main spring under stress, and when subjected to vibration, the rubber main spring can produce greater elastic deformation, thereby absorbing more vibration energy, which can significantly enhance the damping performance of the hydraulic mount.

[0029] The inner core is provided with a limiting portion, and the shell is provided with a first limiting cooperation portion and a second limiting cooperation portion, which are located on both sides of the limiting portion along the suspension axial direction, for limiting the extreme position of the rubber main spring moving along the suspension axial direction. In this way, it can prevent the rubber main spring from being deformed or damaged excessively under the action of excessive axial force, protect the performance and service life of the rubber main spring, and also ensure that the hydraulic mount operates stably within the normal working range, avoiding affecting the vibration isolation effect of the mount due to excessive axial displacement of the rubber main spring. At the same time, the limiting design can ensure that the rubber main spring can remain within the predetermined motion range when subjected to dynamic load, thereby optimizing the dynamic performance of the mount.

[0030] Moreover, the limiting portion is composed of limiting plates connected to the inner core and an elastomer wrapped on at least part of the limiting plates, which has a simple structure and is easy to design and implement. Connecting the limiting plates on the inner core can ensure the stability of the limiting portion. At the same time, the elastomer wrapped on at least part of the limiting plates can play a buffering role during limiting, reducing the rigid impact during limiting, providing additional buffering and limiting effect when the rubber main spring is subjected to axial force, preventing the rubber main spring from being damaged due to excessive displacement, and making the limiting process more stable.

[0031] Furthermore, by arranging the distance between the second flange and the limiting cooperation plate, the displacement range of the rubber main spring can be accurately limited. When the rubber main spring deforms or displaces during operation, the distance between the limiting cooperation plate and the second flange can limit the deformation of the rubber main spring within the designed range. The limiting cooperation plate is connected to the shell through the support column, which can provide reliable support for the limiting cooperation plate and enhance the stability of the entire limiting structure, thereby ensuring the effectiveness of the limiting function.

[0032] Furthermore, the third flange is clamped between the housing and the decoupling structure, which can effectively fill the gap between the two and form a reliable sealing structure to prevent hydraulic fluid leakage and ensure the normal operation of the working medium inside the hydraulic suspension. Moreover, since the third flange is folded to one side and has a certain elasticity, when the housing and the decoupling structure are subjected to vibration or impact, the third flange can absorb and disperse energy through its own elastic deformation, thereby playing a buffering and shock-absorbing role and reducing damage to the boot cup and other related components.

[0033] By providing the fourth flange on the housing, the installation stability of the boot cup can be enhanced, so that it is not easy to be displaced due to external pressure or vibration, thereby further improving the reliability of the seal. Moreover, the stop ring is clamped between the fourth flange and the boot cup, which can avoid damage to the boot cup caused by the direct pressure of the fourth flange on the boot cup. At the same time, the fourth flange and the stop ring can increase the sealing contact area between the boot cup and the housing, reduce the possibility of leakage, maintain a stable pressure environment inside the hydraulic suspension, and ensure its normal operation.

[0034] In addition, another purpose of the present application is to provide a vehicle, wherein the vehicle is provided with the hydraulic suspension as described above.

[0035] The vehicle and the hydraulic suspension described above have the same beneficial effects, and will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0036] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The embodiments of the present application illustrated in the drawings and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0037] Figure 1 An assembly drawing of the hydraulic suspension using the decoupling device of the first embodiment of the present application between the power assembly and the vehicle frame;

[0038] Figure 2 A structural schematic view of the hydraulic suspension using the decoupling device of the first embodiment of the present application;

[0039] Figure 3 A structural schematic view of the first flow channel plate according to the first embodiment of the present application; Figure 2 A sectional view along line A-A in the figure;

[0040] Figure 4 An enlarged view of the structure shown at B in the figure; Figure 3

[0041] Figure 5

[0042] Figure 6 ​​Structure schematic view of the second flow channel plate of the utility model embodiment one;

[0043] Figure 7 Structure schematic view of the decoupling film of the utility model embodiment one;

[0044] Figure 8 Bottom view of the limiting cooperation plate of the utility model embodiment two;

[0045] Figure 9 For along Figure 8 Sectional view along C-C line;

[0046] Figure 10 Structure schematic view of the rubber main spring of the utility model embodiment two;

[0047] Figure 11 Top view of the inner core of the utility model embodiment two;

[0048] Figure 12 For along Figure 11 Sectional view along D-D line;

[0049] Figure 13 Exploded schematic view of the limiting portion of the utility model embodiment two.

[0050] Mark explanation:

[0051] 1, decoupling structure; 2, hydraulic suspension; 3, power assembly; 4, frame;

[0052] 11, flow channel plate; 11A, first flow channel plate; 11A1, positioning hole; 11A2, flow channel hole; 11A3, first flanging; 11B, second flow channel plate; 11B1, positioning column;

[0053] 12, decoupling film; 121, protrusion; 122, avoiding groove; 13, inertia passage; 131, communication port; 14, damping hole;

[0054] 21, shell; 211, containing cavity; 2111, first cavity; 2112, second cavity; 212, first limiting cooperation portion; 2121, second flanging; 213, connecting boss; 214, fourth flanging;

[0055] 22, rubber main spring; 221, embedding groove; 2211, first connecting surface; 2212, second connecting surface; 2213, third connecting surface; 222, recessed portion; 2221, recessed groove;

[0056] 23, inner core; 231, rotation-stopping groove; 232, positioning rivet; 233, weight-reducing hole; 234, connecting portion; 2341, sleeve; 2342, rotation-stopping boss; 24, leather bowl; 241, third flanging;

[0057] 25, limiting part; 251, limiting plate; 2511, horizontal plate; 2512, web; 2513, connecting hole; 2514, avoiding hole; 252, elastic body;

[0058] 26, second limiting matching part; 261, limiting matching plate; 2611, matching part; 2612, supporting column; 26121, threaded hole; 26122, through hole; 2613, avoiding hole; 27, stop ring; 271, horizontal section; 272, vertical section. DETAILED DESCRIPTION

[0059] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0060] In the following description, specific details are set forth such as particular system configurations, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application can be practiced without these specific details. In other instances, well-known systems, structures, circuits, and techniques have not been shown in detail in order to avoid obscuring the application.

[0061] In the description of the utility model, it should be explained that if the terms indicating the orientation or position relationship such as "upper", "lower", "inner", "outer" appear, it is based on the orientation or position relationship shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation of the utility model. In addition, if the terms "first", "second" appear, they are also used for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0062] In addition, in the description of the utility model, unless otherwise explicitly limited, the terms "mounting", "connection", "connecting", "connecting piece" should be understood broadly. For example, it can be fixedly connected, or can be detachably connected, or integrally connected; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood in combination with specific circumstances.

[0063] The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0064] Embodiment one

[0065] The embodiment relates to a decoupling structure which can realize local deformation of a decoupling film, avoid up-and-down floating of a flow channel plate to strike the decoupling film, thereby reducing the risk of abnormal sound between the decoupling film and the flow channel plate, and improving the NVH performance of a whole vehicle.

[0066] In terms of the overall structure, referring to the embodiments shown in Figs. Figure 3 and Figure 4 The decoupling structure 1 of the embodiment is used for being mounted into a suspended accommodating cavity 211 and dividing the accommodating cavity 211 into a first cavity 2111 and a second cavity 2112 located on two sides of the decoupling structure 1. The decoupling structure 1 comprises two flow channel plates 11 and a decoupling film 12 located between the two flow channel plates 11.

[0067] Meanwhile, the middle part of each flow channel plate 11 is configured to form an inertia channel 13 for communicating the first cavity 2111 and the second cavity 2112, the decoupling film 12 is located on the circumferential side of the inertia channel 13, and each flow channel plate 11 is provided with a damping hole 14 corresponding to the decoupling film 12.

[0068] Here, the decoupling structure 1 of the utility model, by dividing the suspended accommodating cavity 211 into the first cavity 2111 and the second cavity 2112, and setting the inertia channel 13 to communicate the two, when the suspension is excited by low frequency, the inertia force is generated by the flow of the hydraulic fluid in the inertia channel 13, and interacts with the vibration excitation, thereby consuming the vibration energy and playing a role of attenuating vibration.

[0069] And, since the inertia channel 13 is located in the middle part of the flow channel plate 11, and the decoupling film 12 and the damping hole 14 are located on the circumferential side of the inertia channel 13, it is an optimization of the structure design of the flow channel plate 11. Under the condition of the same communication area, the distance between the damping holes 14 can be increased, and the problem that the existing hydraulic suspension 2 drives the whole decoupling film 12 to float up and down to strike the flow channel plate 11 when the hydraulic fluid flows under high frequency working condition can be solved. When the hydraulic fluid flows up and down between the first cavity 2111 and the second cavity 2112, the local deformation of the decoupling film 12 can be realized, and the up-and-down floating amplitude of the decoupling film 12 under high frequency working condition can be effectively reduced, so that the collision between the decoupling film 12 and the two flow channel plates 11 is relieved, thereby reducing the risk of abnormal sound and improving the NVH performance of the whole vehicle.

[0070] In the specific implementation, the hydraulic fluid is injected into the accommodating cavity 211, and in the low-frequency working condition, the hydraulic fluid reciprocates between the first cavity 2111 and the second cavity 2112 through the inertia passage 13, so as to form a controllable damping effect. Secondly, in the high-frequency working condition, the vibration energy cannot be effectively attenuated only through the inertia passage 13, at this time, part of the hydraulic fluid flows between the first cavity 2111 and the second cavity 2112 through the damping hole 14. In the prior art hydraulic suspension, the damping hole is located at the center position, and when the hydraulic fluid flows through the damping hole, the whole decoupling film is up and down floating to strike the flow channel plate, which increases the risk of abnormal sound.

[0071] In the embodiment, the inertia passage 13 is arranged at the center position, and the damping hole 14 is arranged at the position corresponding to the decoupling film 12 on the side of the inertia passage 13. When the hydraulic fluid flows through the damping hole 14, the partial deformation of the decoupling film 12 can be realized, so as to reduce the collision area between the decoupling film 12 and the two flow channel plates 11, which is beneficial to reduce the risk of abnormal sound.

[0072] It is worth mentioning that the hydraulic fluid in the embodiment can adopt the damping liquid known by those skilled in the art, such as silicone oil, glycerol or hydraulic oil, etc. The specific structure of the inertia passage 13 can be arranged according to the prior art, which will not be repeated here.

[0073] Meanwhile, in the specific structure, the damping holes 14 on each flow channel plate 11 in the embodiment can be arranged one or multiple around the inertia passage 13 at irregular intervals, and the specific number can be designed and adjusted according to actual needs, for example, two, three or four, etc. Of course, it can be understood that the damping holes 14 on each flow channel plate 11 are multiple arranged around the inertia passage 13 at irregular intervals, which is also possible.

[0074] Based on the above overall introduction, in the embodiment, as an exemplary structure, referring to Figure 5 , Figure 6 and Figure 7 , the decoupling film 12 is annular, the damping holes 14 on each flow channel plate 11 are multiple arranged at intervals around the inertia passage 13, and the damping holes 14 on the two flow channel plates 11 are arranged correspondingly.

[0075] Here, the decoupling film 12 is arranged in a ring shape, which can avoid large-area contact between the decoupling film 12 and the two flow channel plates 11, thereby reducing the knocking noise of the decoupling film 12 between the two flow channel plates 11 under high-frequency working conditions. Meanwhile, in combination with the arrangement of the damping holes 14 being arranged at intervals around the inertial channel 13, not only can the flow of the hydraulic fluid between the two flow channel plates 11 be more uniform, thereby avoiding local excessive or insufficient flow and improving the stability and reliability of the working of the decoupling film 12, but also the flow capacity of the hydraulic fluid in the damping holes 14 can be reduced under low-frequency working conditions, so as to force the hydraulic fluid to flow back and forth in the inertial channel, thereby strengthening the vibration absorption efficiency of the system.

[0076] In addition, the damping holes 14 on the two flow channel plates 11 are arranged correspondingly, which can ensure the smoothness and symmetry of the flow of the hydraulic fluid between the upper and lower flow channel plates 11, and is helpful to accurately control the flow path and flow capacity of the hydraulic fluid, thereby better realizing the decoupling function.

[0077] It should be noted that, in order to facilitate the description of the two flow channel plates 11 in the embodiment, the flow channel plate 11 located above the decoupling film 12 is referred to as the first flow channel plate 11A, and the flow channel plate located below the decoupling film 12 is referred to as the second flow channel plate 11B. In the specific structure, the inertial channel 13 is arranged at the middle part of the second flow channel plate 11B, the first flow channel plate 11A is provided with a flow channel hole 11A2 in communication with the inertial channel 13, and the end of the inertial channel 13 away from the flow channel hole 11A2 is provided with a communication port 131 in communication with the second cavity 2112.

[0078] In specific implementation, the decoupling film 12 can be arranged on the second flow channel plate 11B to shield each damping hole 14 on the second flow channel plate 11B. Under high-frequency working conditions, part of the hydraulic fluid flows up and down through the inertial channel 13, and part of the hydraulic fluid flows up and down through each damping hole 14, thereby ensuring the normal flow of the hydraulic fluid. In addition, the damping holes 14 on each flow channel plate 11 can be arranged as eighteen, of course, appropriate design and adjustment can also be made according to actual needs, for example, they can be arranged as sixteen, seventeen or nineteen, etc.

[0079] Furthermore, in order to further reduce the collision noise between the decoupling film 12 and the two flow channel plates 11, in the embodiment, as shown in Figure 7 , the two sides of the decoupling film 12 are each provided with a plurality of protrusions 121, and the plurality of protrusions 121 on each side are used to abut against the flow channel plate 11 on the corresponding side.

[0080] Therefore, by arranging a plurality of protrusions 121 on both sides of the decoupling film 12, the contact area between the decoupling film 12 and the two flow channel plates 11 is reduced, thereby reducing the collision area between the decoupling film 12 and the two flow channel plates 11 during vibration, which is conducive to reducing the noise caused by collision.

[0081] In specific implementation, the material of the protrusion 121 can be selected to be a material that is compatible with the main material of the decoupling membrane 12 and has good elasticity, such as rubber, nylon or polyurethane. Thus, when the decoupling membrane 12 collides with the two flow channel plates 11, each protrusion 121 can absorb part of the vibration energy and reduce the impact between the decoupling membrane 12 and the two flow channel plates 11, further reducing the generation of noise and abnormal sounds.

[0082] Furthermore, to facilitate the assembly between the first flow channel plate 11A and the second flow channel plate 11B, in this embodiment, as follows: Figure 5 and Figure 6 As shown, one of the two flow channel plates 11 is provided with a positioning post 11B1, and the other of the two flow channel plates 11 is provided with a positioning hole 11A1. The positioning post 11B1 is inserted into the positioning hole 11A1, which can limit the relative position of the two flow channel plates 11 along their own circumference.

[0083] The advantage of this design is that the relative positions of the two flow channel plates 11 can be accurately determined by the cooperation of the positioning pin 11B1 and the positioning hole 11A1. This can prevent assembly errors caused by positional deviations during assembly, thereby improving the assembly accuracy of the entire device and ensuring that the flow channels between the flow channel plates 11 can be accurately connected, thus ensuring the smooth flow of hydraulic fluid in the flow channels.

[0084] Meanwhile, by limiting the relative position of the two flow channel plates 11 along their own circumference, the two flow channel plates 11 can be kept relatively fixed during operation, which can enhance the stability of the overall structure, help reduce the relative displacement between the flow channel plates 11 caused by factors such as vibration and external force, and prevent hydraulic fluid leakage.

[0085] In the specific structure, the second flow channel plate 11B is provided with four positioning posts 11B1 arranged at intervals along its circumference, and the first flow channel plate 11A is provided with positioning holes 11A1 corresponding to each positioning post 11B1. Of course, in other embodiments, it is also possible to set the positioning posts 11B1 on the first flow channel plate 11A and the positioning holes 11A1 on the second flow channel plate 11B. Furthermore, the number of positioning posts 11B1 can also be designed and adjusted according to actual needs, for example, it can be set to one, two, or three, etc.

[0086] It is worth mentioning that the decoupling membrane 12 in this embodiment is provided with clearance grooves 122 for avoiding each positioning post 11B1. When assembling the decoupling membrane 12, the decoupling membrane 12 can be restricted from rotating axially along the second flow channel plate 11B simply by aligning the clearance grooves 122 with the positioning posts 11B1. This can eliminate additional noise and vibration caused by the rotation of the decoupling membrane 12, thereby further reducing the risk of abnormal noise.

[0087] In a specific structure, both sides of the decoupling film 12 are provided with a plurality of groups of protrusions 121 arranged at a distance along the circumferential direction of the decoupling film 12, and the number of groups of protrusions 121 can be designed and adjusted according to actual requirements, for example, four groups, eight groups, or seventy-two groups, etc. In the embodiment, seventy-two groups of protrusions 121 are provided.

[0088] Meanwhile, each group of protrusions 121 is provided with a plurality of protrusions 121 arranged at a distance along the radial direction of the decoupling film 12, and the number of protrusions 121 in each group of protrusions 121 can be designed and adjusted according to actual requirements, for example, three, four, or five. In the embodiment, five protrusions 121 are provided in each group of protrusions 121, and four protrusions 121 are provided in each group of protrusions 121 corresponding to each avoidance groove 122.

[0089] In addition, in order to ensure the stability of the second flow channel plate 11B, in the embodiment, as shown in FIG. 1A, one of the two flow channel plates 11 is provided with a first flange 11A3 folded to one side of itself, and the first flange 11A3 is arranged outside the other flow channel plate 11. Figure 4

[0090] The advantage of such an arrangement is that by providing the first flange 11A3 folded to one side of itself on one of the two flow channel plates 11, the other flow channel plate 11 can be arranged, thereby avoiding wear between the arranged flow channel plate 11 and the hydraulic suspension 2, and preventing liquid leakage. At the same time, when subjected to a vibration load, the first flange 11A3 can act as a solid barrier to prevent unnecessary rubbing of the arranged flow channel plate 11 in the hydraulic suspension 2, so that the pressing force between the arranged flow channel plate 11 and the hydraulic suspension 2 is well maintained, thereby reducing the risk of liquid leakage.

[0091] In a specific structure, the first flow channel plate 11A is provided with the first flange 11A3 described above, and the first flow channel plate 11A can be formed by stamping a common metal plate, such as a stainless steel plate, an aluminum plate, etc. The second flow channel plate 11B is made of nylon material, and in order to avoid wear of the second flow channel plate 11B, the first flange 11A3 needs to be arranged on the first flow channel plate 11A to arrange the second flow channel plate 11B.

[0092] ​In summary, in the assembly of the decoupling structure 1 of the embodiment, the decoupling film 12 is placed in the second flow channel plate 11B, and the first flow channel plate 11A is covered on the second flow channel plate 11B. Meanwhile, by the above design, the inertia channel 13 is arranged at the center position, and the plurality of damping holes 14 are arranged at intervals around the inertia channel 13, so that when the hydraulic fluid flows up and down between the first flow channel plate 11A and the second flow channel plate 11B, the decoupling film 12 can be partially deformed, the collision area between the decoupling film 12 and the two flow channel plates 11 is reduced, and the problem that the hydraulic fluid drives the entire decoupling film 12 to float up and down to hit the two flow channel plates 11, thereby increasing the risk of abnormal sound, is solved, thereby reducing the risk of abnormal sound and ensuring the NVH performance of the vehicle.

[0093] Embodiment Two

[0094] The embodiment relates to a hydraulic suspension, as shown in Figure 2 、 Figure 3 and Figure 4 , comprising the decoupling structure 1 in Embodiment One, further comprising a shell 21, and a rubber main spring 22 and a skin cup 24 which form a containing cavity 211 with the shell 21.

[0095] Here, by adopting the above-mentioned decoupling structure 1, the risk of abnormal sound of the hydraulic suspension 2 under high-frequency working conditions can be reduced, and the NVH performance of the vehicle can be improved. The containing cavity 211 formed by the shell 21, the rubber main spring 22 and the skin cup 24 is filled with hydraulic fluid, the above-mentioned decoupling structure 1 is integrated in the containing cavity 211, the energy is consumed through the flow of hydraulic fluid between the inertia channel 13 or the decoupling film 12, and the abnormal sound generated by high-frequency vibration is further attenuated.

[0096] It should be noted that the first cavity 2111 of the embodiment is located between the rubber main spring 22 and the decoupling structure 1, the second cavity 2112 is located between the decoupling structure 1 and the skin cup 24, and the power assembly 3 in the embodiment can refer to the engine in the prior art, which will not be described here.

[0097] As shown in Figure 1 and Figure 2 , the rubber main spring 22 is embedded with an inner core 23, and the inner core 23 is provided with a connecting part 234 for connecting with the power assembly 3. The advantages of this arrangement are that the connecting part 234 on the inner core 23 is directly connected with the power assembly 3, providing high-rigidity support, ensuring accurate positioning of the power assembly 3, bearing the static load and dynamic torque of the power assembly 3, and effectively transmitting the vibration of the power assembly 3 to the suspension and reducing and isolating the vibration through the cooperation of the decoupling structure 1, the rubber main spring 22 and other components.

[0098] Meanwhile, the rubber main spring 22 has a certain elastic deformation capacity, can absorb part of the vibration energy, the decoupling structure 1 further attenuates the vibration, thereby reducing the influence of the power assembly 3 vibration on other parts of the vehicle, improving the comfort and reliability of the vehicle.

[0099] In the specific structure, the inner core 23 is embedded in the rubber main spring 22, and in order to improve the stability between the inner core 23 and the rubber main spring 22, the inner core 23 of the embodiment can be specifically provided in a stepped shape, thereby increasing the contact area between the rubber main spring 22 and the rubber main spring 22, and ensuring the connection stability between the inner core 23 and the rubber main spring 22. Of course, the shape of the inner core 23 can also be set to other common shapes according to actual needs, as long as it can ensure the stable connection between the rubber main spring 22 and the rubber main spring 22.

[0100] Moreover, the connecting part 234 of the embodiment is a sleeve 2341 embedded in the inner core 23, the sleeve 2341 is made of cast steel material, and is cast as an integral structure with the inner core 23. At the same time, the inside of the sleeve 2341 is a threaded structure, which can be screwed in the sleeve 2341 through bolts during assembly, realizing the connection between the rubber main spring 22 and the power assembly 3.

[0101] Here, it is worth mentioning that in order to ensure the stability of the sleeve 2341, as shown in Figure 3 and Figure 12 , a plurality of rotation stopping protrusions 2342 are arranged on the outer side wall of the sleeve 2341 along the circumferential direction, and the inner core 23 is provided with rotation stopping grooves 231 matched with the rotation stopping protrusions 2342, and the number of rotation stopping protrusions 2342 can be designed and adjusted according to actual needs, for example, one, two or three, etc. In order to meet the lightweight design requirements and at the same time ensure the stability of the sleeve 2341, the rotation stopping protrusions 2342 of the embodiment are preferably two.

[0102] In this way, during the process of screwing the bolt into the sleeve 2341, the rotation stopping protrusions 2342 can be clamped by the rotation stopping grooves 231, thereby effectively offsetting the torque generated by the rotation of the bolt, avoiding the rotation of the sleeve 2341 around its axis relative to the insulating part, and further maintaining the stability of the sleeve 2341.

[0103] Moreover, in the embodiment, considering the industry trend of lightweight design, as shown in Figure 11 , a plurality of weight reduction holes 233 are formed on the inner core 23, thereby not only reducing the overall weight of the hydraulic suspension 2 and improving the overall performance of the vehicle, but also reducing the amount of material while ensuring the structural performance, thereby reducing production costs and realizing the rational use of resources.

[0104] Specifically, in order to ensure the stable connection between the rubber main spring 22 and the shell 21 and the inner core 23, in the embodiment, the two ends of the rubber main spring 22 are vulcanizedly connected with the shell 21 and the inner core 23 respectively, as shown in Figure 3 Thus, the two ends of the rubber main spring 22 are vulcanizedly connected with the shell 21 and the inner core 23, and such connection is very firm, which can ensure that the rubber main spring 22 will not be separated from the shell 21 and the inner core 23 during long-term use, maintain the structural integrity and performance stability of the hydraulic mount 2, and support the power assembly 3 and isolate the vibration of the power assembly 3 from being transmitted to the cab.

[0105] In the specific structure, the rubber main spring 22 of the embodiment can be provided in a conical structure, and the bottom of the rubber main spring 22 is provided in an inverted conical structure. The shell 21 in the embodiment is formed by stamping sheet metal, and the upper half of the shell 21 is provided in an inverted conical structure, and the lower half is provided in a straight cylindrical structure. The upper half of the shell 21 is provided with a vulcanization connecting surface matched with the bottom of the rubber main spring 22. In specific implementation, the rubber main spring 22 is vulcanized on the vulcanization connecting surface of the shell 21 to form an integrated structure with the shell 21.

[0106] Meanwhile, the rubber main spring 22 is provided with an embedded groove 221 matched with the structure of the inner core 23. The embedded groove 221 includes a first connecting surface 2211 extending axially upward from the bottom of the rubber main spring 22 along the rubber main spring 22, a second connecting surface 2212 extending radially outward from the end of the first connecting surface 2211 away from the rubber main spring 22, and a third connecting surface 2213 extending axially upward from the end of the second connecting surface 2212 away from the first connecting surface 2211.

[0107] Here, the rubber main spring 22 is vulcanizedly connected with the inner core 23 through the first connecting surface 2211, the second connecting surface 2212 and the third connecting surface 2213, which can increase the contact area between the rubber main spring 22 and the inner core 23, thereby ensuring the strength of the vulcanization connection between the rubber main spring 22 and the inner core 23.

[0108] Meanwhile, in order to improve the damping performance, in the embodiment, as a preferred embodiment, as shown in Figure 3 and Figure 10 the rubber main spring 22 is provided with a recessed portion 222 on the side facing the accommodating cavity 211, and the recessed portion 222 is recessed away from the accommodating cavity 211.

[0109] Here, the recessed portion 222 on the rubber main spring 22 can reduce the rigidity of the rubber main spring 22 in the radial direction, avoid damage caused by excessive local stress, and improve the load-carrying capacity and stability of the product. At the same time, it can also increase the deformation space of the rubber main spring 22 under stress, and when subjected to vibration, the rubber main spring 22 can produce greater elastic deformation, thereby absorbing more vibration energy, which can significantly enhance the damping performance of the hydraulic mount 2.

[0110] In a specific structure, the recessed portion 222 of the embodiment is two recessed grooves 2221 arranged along the radial distance of the rubber main spring 22. The recessed portion 222 reduces the effective load-carrying area of the rubber main spring 22, making it more likely to elastically deform under radial load, thereby reducing static stiffness, and better adjusting the three-way stiffness of the mount, which is conducive to the optimization design of structural reliability.

[0111] In a specific implementation, the rubber main spring 22 will be pressed when subjected to radial vibration. At this time, due to the effect of the recessed groove 2221, the vibration of the rubber main spring 22 will be buffered, improving the damping performance. At the same time, the hydraulic fluid in the recessed groove 2221 will flow more smoothly into the containing cavity 211, thereby reducing the liquid damping and improving the vibration isolation effect.

[0112] In addition, in order to ensure the damping performance of the rubber main spring 22, in the embodiment, as a preferred embodiment, as shown in Figure 3 the inner core 23 is provided with a limiting portion 25, and the shell 21 is provided with a first limiting cooperation portion 212 and a second limiting cooperation portion 26 arranged at intervals. At the same time, the first limiting cooperation portion 212 and the second limiting cooperation portion 26 are respectively located on both sides of the limiting portion 25 along the axial direction of the mount, for limiting the limit position of the rubber main spring 22 moving along the axial direction of the mount.

[0113] Here, the inner core 23 is provided with a limiting portion 25, and the shell 21 is provided with a first limiting cooperation portion 212 and a second limiting cooperation portion 26, and the first limiting cooperation portion 212 and the second limiting cooperation portion 26 are respectively located on both sides of the limiting portion 25 along the axial direction of the mount, for limiting the limit position of the rubber main spring 22 moving along the axial direction of the mount. As described above, it can prevent the rubber main spring 22 from being deformed or damaged under excessive axial force, and protect the performance and service life of the rubber main spring 22.

[0114] At the same time, it can also ensure that the hydraulic mount 2 operates stably within the normal working range, and avoid affecting the vibration isolation effect of the mount due to excessive axial displacement of the rubber main spring 22. At the same time, the limiting design can ensure that the rubber main spring 22 can remain within the predetermined motion range when subjected to dynamic load, thereby optimizing the dynamic performance of the mount.

[0115] In practice, the rubber main spring 22 is vulcanized and connected to the housing 21. When the hydraulic suspension 2 is subjected to axial force during operation, the rubber main spring 22 will undergo axial deformation. When the axial displacement of the rubber main spring 22 reaches a certain level, the limiting part 25 will contact the first limiting mating part 212 or the second limiting mating part 26, thereby limiting the further displacement of the rubber main spring 22 and preventing it from being damaged due to excessive deformation.

[0116] Furthermore, in this embodiment, as a preferred implementation, refer to... Figure 3 and Figure 13 As shown, the limiting part 25 includes a limiting plate 251 connected to the inner core 23, and an elastic body 252 covering at least a portion of the limiting plate 251. It is understood that the limiting part 25, composed of the limiting plate 251 connected to the inner core 23 and the elastic body 252 covering at least a portion of the limiting plate 251, has a simple structure, is easy to design and implement, and connecting the limiting plates 251 to the inner core 23 ensures the stability of the limiting part 25.

[0117] Meanwhile, the elastomer 252 covers at least part of the limiting plate 251, which can play a buffering role during the limiting process, reduce the rigid impact during the limiting process, provide additional buffering and limiting effect when the rubber main spring 22 is subjected to axial force, prevent the rubber main spring 22 from being damaged due to excessive displacement, and make the limiting process more stable.

[0118] In specific implementation, the inner core 23 is embedded with two positioning rivets 232 arranged at circumferential intervals. Each positioning rivet 232 is made of cast steel and is cast integrally with the inner core 23. The limiting plate 251 is provided with connecting holes 2513 corresponding to each positioning rivet 232, and the limiting plate 251 is press-fitted with the positioning rivets 232 through the connecting holes 2513. In addition, the number of positioning rivets 232 in this embodiment can be designed and adjusted according to actual needs; for example, it can also be set to one, three, etc.

[0119] It should be noted that the top of each positioning rivet 232 is tapered, which guides the connecting hole 2513 of the limiting plate 251 to make an interference fit with the positioning rivet 232. Of course, in addition to a tapered structure, other common shapes can be used for the top of the positioning rivet 232, as long as it ensures smooth assembly between the limiting plate 251 and the positioning rivet 232. At the same time, to ensure the stability of the positioning rivets 232, the bottom of each positioning rivet 232 is stepped, which effectively prevents the positioning rivets 232 from loosening.

[0120] Still worth mentioning is that the limiting plate 251 of the embodiment is provided with an avoiding hole 2514 in communication with the sleeve 2341, which can form an avoidance for the screw connection between the bolt and the sleeve 2341 when the hydraulic suspension 2 is connected with the power assembly 3, so as to avoid the interference of the limiting plate 251 on the connection between the bolt and the sleeve 2341.

[0121] Moreover, the elastic body 252 in the embodiment can be made of rubber material which is well known to those skilled in the art, and of course, it is also possible to use other common cushioning materials for manufacturing. In the specific structure, the limiting plate 251 of the embodiment is of T-shaped structure and includes a web plate 2512 connected with the inner core 23 and a transverse plate 2511 orthogonal to the web plate 2512, and the elastic body 252 only wraps the transverse plate 2511 in the limiting plate 251 and is vulcanizedly connected with the transverse plate 2511.

[0122] Of course, in other embodiments, the transverse plate 2511 can also be arranged in multiple along the axial direction of the web plate 2512, each transverse plate 2511 is vulcanizedly connected with the elastic body 252, or the transverse plate 2511 extends circumferentially around the web plate 2512, and the elastic body 252 is arranged in a ring shape to wrap the circumferential edge of the elastic body 252.

[0123] In addition, during the whole vehicle experiment stage, different thicknesses of the elastic body 252 can also be replaced according to different NVH performance requirements of the vehicle, and compared with the re-design structure, the replacement of the elastic body 252 has low cost, short cycle and is convenient for quickly testing multiple schemes in the experiment.

[0124] Secondly, as shown in Figure 2 and Figure 3 The first limiting fitting part 212 of the embodiment includes a second flange 2121 on the side of the shell 21 provided with the rubber main spring 22, and the second limiting fitting part 26 includes a limiting fitting plate 261 arranged at a distance from the second flange 2121, and the limiting fitting plate 261 is connected with the shell 21 through a support column 2612 on one side thereof.

[0125] Therefore, by arranging the second flange 2121 and the limiting fitting plate 261 at a distance, the displacement range of the rubber main spring 22 can be accurately limited. When the rubber main spring 22 deforms or displaces during operation, the distance between the limiting fitting plate 261 and the second flange 2121 can limit the deformation of the rubber main spring 22 within the design allowable range. The limiting fitting plate 261 is connected with the shell 21 through the support column 2612, which can provide reliable support for the limiting fitting plate 261 and enhance the stability of the entire limiting structure, thereby ensuring the effectiveness of the limiting function.

[0126] In specific implementation, when the rubber main spring 22 is subjected to axial vibration, it will displace along its axial direction. At this time, through the arrangement of the limiting plate 251, it will abut against the second flange 2121 or the limiting fitting plate 261, thereby preventing the deformation of the rubber main spring 22 from exceeding the designed allowable range, and avoiding the cracking of the rubber main spring 22, which may lead to risks such as liquid leakage and performance failure.

[0127] In specific structure, the edge of the top of the upper half of the shell 21 extends upward along its axial direction to form the second flange 2121. After such design, when the rubber main spring 22 is axially deformed, the elastic body 252 will be in contact with the second flange 2121. Due to the long-term repeated compression state, the contact area between the elastic body 252 and the second flange 2121 will inevitably be worn or damaged.

[0128] Therefore, as another preferred embodiment, a contact platform extending radially outward from the end of the second flange 2121 away from the shell 21 can be arranged on the second flange 2121, thereby increasing the contact area between the elastic body 252 and the second flange 2121, and facilitating the improvement of the service life of the elastic body 252.

[0129] In addition, the limiting fitting plate 261 is integrally cast, and a fitting part 2611 corresponding to the horizontal plate 2511 is arranged on it. When the elastic body 252 only wraps the horizontal plate 2511, the fitting part 2611 corresponding to the elastic body 252 wrapping the horizontal plate 2511 is arranged on the limiting fitting plate 261. Of course, in other embodiments, when the elastic body 252 is arranged in multiple circumferential intervals, the fitting part 2611 on the limiting fitting plate 261 is arranged one-to-one corresponding to the elastic body 252, or when the elastic body 252 is arranged in a ring shape and wraps the circumferential edge of the elastic body 252, the fitting part 2611 on the limiting fitting plate 261 can be arranged along its circumferential direction.

[0130] In specific structure, the limiting fitting plate 261 is provided with a relief opening 2613 for connecting the power assembly 3 and the sleeve 2341, and the support column 2612 of the present embodiment is located on the side facing the shell 21 and extends along its axial direction. The inner side of the support column 2612 is provided with a threaded hole 26121, thereby facilitating the connection between the limiting fitting plate 261 and the shell 21.

[0131] At the same time, as shown in Figure 3 , Figure 8 and Figure 9As shown in the middle of the embodiment, the bottom of the limiting fitting plate 261 is provided with three supporting columns 2612, and the connecting lugs 213 on the upper surface of the shell 21 correspond to the supporting columns 2612 one by one, and the bottom of each supporting column 2612 is provided with a through hole 26122 communicating with a threaded hole 26121, and the limiting fitting plate 261 is sleeved on the corresponding connecting lug 213 through the through hole 26122, so as to facilitate the subsequent bolt connection of the limiting fitting plate 261 and the shell 21.

[0132] Moreover, each through hole 26122 is chamfered towards the side of the connecting lug 213, so as to guide the quick alignment of each connecting lug 213 with the corresponding through hole 26122, reduce the friction resistance between each connecting lug 213 and the corresponding through hole 26122, and facilitate the quick fixing between the limiting fitting plate 261 and the shell 21. It should be noted that the number of connecting lugs 213 in the embodiment can be designed and adjusted according to actual needs, for example, one, two or four, etc.

[0133] In addition, in order to avoid leakage of hydraulic fluid, in the embodiment, as shown in Figure 3 and Figure 4 , the edge of the skin bowl 24 is provided with a third flange 241 folded to one side, and the third flange 241 is clamped between the shell 21 and the decoupling structure 1. By this arrangement, the third flange 241 is clamped between the shell 21 and the decoupling structure 1, which can effectively fill the gap between the two and form a reliable sealing structure to prevent hydraulic fluid leakage and ensure the normal operation of the working medium inside the hydraulic mount 2.

[0134] Moreover, since the third flange 241 is folded to one side and has a certain elasticity, when the shell 21 and the decoupling structure 1 are subjected to vibration or impact, the third flange 241 can absorb and disperse energy through its own elastic deformation, play a buffering and shock-absorbing role, and reduce damage to the skin bowl 24 and other related components.

[0135] In specific implementation, the skin bowl 24 is arranged at the bottom of the decoupling structure 1, the inner wall of the third flange 241 is in contact with the first flange 11A3, and then during assembly, due to the packaging extrusion force of the bottom of the shell 21, the third flange 241 will fill the gap between the shell 21 and the first flange 11A3, and the decoupling structure 1 in the first embodiment is well sealed, ensuring that the hydraulic fluid in the containing cavity 211 will not leak.

[0136] In the specific structure, the cup 24 of the embodiment is made of rubber material, and the cross section of the bottom of the cup 24 is a wave-shaped structure. When the space in the first cavity 2111 is reduced, the hydraulic fluid flows downward into the second cavity 2112 through the inertia channel 13, and the elastic property of the rubber is utilized to increase the space of the second cavity 2112, so that the hydraulic fluid can reciprocate between the first cavity 2111 and the second cavity 2112.

[0137] At the same time, in order to ensure the stability of the cup 24, in the embodiment, as shown in Figure 4 the shell 21 is provided with a fourth flange 214 that is bent inward on the side where the cup 24 is arranged, and the side of the cup 24 that is away from the rubber main spring 22 is provided with a retaining ring 27, which is clamped between the fourth flange 214 and the cup 24.

[0138] Here, the installation stability of the cup 24 can be enhanced by the fourth flange 214 on the shell 21, so that the cup 24 is not easily displaced due to external pressure or vibration, thereby further improving the reliability of the seal. Moreover, the retaining ring 27 is clamped between the fourth flange 214 and the cup 24, which can avoid damage to the cup 24 caused by the direct pressure of the fourth flange 214 on the cup 24. In addition, the arrangement of the fourth flange 214 and the retaining ring 27 can increase the sealing contact area between the cup 24 and the shell 21, reduce the possibility of leakage, and maintain a stable pressure environment inside the hydraulic suspension 2 to ensure normal operation.

[0139] In the specific structure, the cross section of the retaining ring 27 is a right angle structure, and includes a horizontal segment 271 and a vertical segment 272, and the outer diameter of the retaining ring 27 is the same as the inner diameter of the lower half of the shell 21. Of course, the shape of the retaining ring 27 can also be set to other common shapes according to actual needs, as long as it can achieve the protection of the cup 24.

[0140] Moreover, after the retaining ring 27 is sleeved on the cup 24, the horizontal segment 271 and the vertical segment 272 are both in contact with the cup 24, so as to block and protect the cup 24, avoiding damage to the cup 24 caused by the direct pressure of the fourth flange 214 on the cup 24. It is worth mentioning that the connection between the horizontal segment 271 and the vertical segment 272 of the retaining ring 27 is smoothly processed, so as to ensure that the retaining ring 27 is smoothly sleeved on the cup 24, avoiding scratching the cup 24 by the retaining ring 27.

[0141] In the embodiment, the fourth flange 214 is arranged axially downward along the shell 21 when not assembled, and after the decoupling structure 1 and the skin bowl 24 are installed on the lower half of the shell 21, the first flow channel plate 11A abuts against the top end of the upper half of the shell 21, and then the retaining ring 27 is sleeved on the skin bowl 24, at which time the fourth flange 214 is bent to press against the horizontal section 271 of the retaining ring 27, thereby ensuring the stability of the skin bowl 24 and the decoupling structure 1.

[0142] In the embodiment, the hydraulic suspension 2 is assembled by first forming the sleeve 2341 and the positioning rivet 232 as a cast integral structure with the inner core 23, and connecting the inner core 23 and the shell 21 as an integral structure through the high-temperature vulcanization process of the rubber main spring 22.

[0143] Secondly, the assembled decoupling structure 1 and the skin bowl 24 are placed on the lower half of the shell 21, and then the retaining ring 27 is sleeved on the skin bowl 24, and the fourth flange 214 is bent to fix the skin bowl 24. At this time, it is worth mentioning that, in order to prevent the hydraulic suspension 2 from producing a shaking abnormal sound due to insufficient internal hydraulic fluid, the decoupling structure 1, the skin bowl 24, the retaining ring 27, and the shell 21 need to be assembled while being immersed in the hydraulic fluid to ensure sufficient hydraulic fluid, and the assembly is completed under the liquid, and the fourth flange 214 is bent to realize packaging.

[0144] Furthermore, the limiting plate 251 is fixed on the inner core 23, the limiting fitting plate 261 is buckled on the corresponding connecting protrusion 213 on the shell 21 through the support columns 2612 thereon, and then the bolts are screwed in the sleeve 2341 through the avoiding openings 2613 on the limiting fitting plate 261, thereby installing part of the structure of the hydraulic suspension 2 on the power assembly 3.

[0145] Finally, another group of bolts are screwed on the vehicle frame 4 after being sequentially threaded through the support columns 2612 and the corresponding connecting protrusions 213, thereby realizing the assembly of the power assembly 3, the hydraulic suspension 2, and the vehicle frame 4.

[0146] Meanwhile, the embodiment also relates to a vehicle provided with the hydraulic suspension 2.

[0147] The vehicle of the embodiment has the same beneficial effects as the hydraulic suspension 2 relative to the prior art, and will not be described here.

[0148] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A decoupling structure, characterized in that: The decoupling structure (1) is used to be installed into the suspended receiving cavity (211) and to divide the receiving cavity (211) into a first cavity (2111) and a second cavity (2112) located on both sides of the decoupling structure (1); The decoupling structure (1) includes two flow channel plates (11) and a decoupling membrane (12) located between the two flow channel plates (11); The middle portion of the two flow channel plates (11) forms an inertial channel (13) for connecting the first cavity (2111) and the second cavity (2112). The decoupling membrane (12) is located on the periphery of the inertial channel (13), and each flow channel plate (11) is provided with a damping hole (14) corresponding to the decoupling membrane (12).

2. The decoupling structure according to claim 1, characterized in that: The decoupling membrane (12) is annular, and the damping holes (14) on each of the flow channel plates (11) are multiple holes arranged at intervals around the inertial channel (13), with the damping holes (14) on two flow channel plates (11) arranged correspondingly; and / or, The decoupling membrane (12) has multiple protrusions (121) on both sides, and each of the multiple protrusions (121) on each side is used to abut against the flow channel plate (11) on the corresponding side.

3. The decoupling structure according to claim 1, characterized in that: One of the two flow channel plates (11) is provided with a positioning post (11B1), and the other of the two flow channel plates (11) is provided with a positioning hole (11A1). The positioning post (11B1) is inserted into the positioning hole (11A1) to limit the relative position of the two flow channel plates (11) along their own circumference.

4. The decoupling structure according to any one of claims 1-3, characterized in that: One of the two flow channel plates (11) is provided with a first flange (11A3) that folds toward itself to one side, and the first flange (11A3) is positioned on the other side of the two flow channel plates (11).

5. A hydraulic suspension, characterized in that: The system includes the decoupling structure (1) as described in any one of claims 1-4, and also includes a housing (21), and a rubber main spring (22) and a cup (24) that surround the housing (21) to form the receiving cavity (211); The rubber main spring (22) is fitted with an inner core (23), and the inner core (23) is provided with a connecting part (234) for connecting with the powertrain (3).

6. The hydraulic suspension according to claim 5, characterized in that: The two ends of the rubber main spring (22) are respectively vulcanized to the housing (21) and the inner core (23); and / or, The rubber main spring (22) has a recess (222) on the side facing the receiving cavity (211), and the recess (222) is recessed on the side away from the receiving cavity (211).

7. The hydraulic suspension according to claim 5, characterized in that: The inner core (23) is provided with a limiting part (25), and the shell (21) is provided with a first limiting mating part (212) and a second limiting mating part (26) arranged at intervals; The first limiting engagement part (212) and the second limiting engagement part (26) are located on both sides of the limiting part (25) along the axial direction of the suspension, respectively, to limit the extreme position of the rubber main spring (22) along the axial direction of the suspension.

8. The hydraulic suspension according to claim 7, characterized in that: The limiting portion (25) includes a limiting plate (251) connected to the inner core (23), and an elastomer (252) covering at least a portion of the limiting plate (251); and / or, The first limiting fitting part (212) includes a second flange (2121) located on the side of the housing (21) where the rubber main spring (22) is located. The second limiting fitting part (26) includes a limiting fitting plate (261) arranged at a distance from the second flange (2121). The limiting fitting plate (261) is connected to the housing (21) through a support column (2612) located on one side of itself.

9. The hydraulic suspension according to claim 5, characterized in that: The edge of the leather cup (24) is provided with a third flange (241) that folds to one side, the third flange (241) being used to clamp between the housing (21) and the decoupling structure (1); and / or, The housing (21) has an inwardly bent fourth flange (214) on the side where the cup (24) is located. The cup (24) has a retaining ring (27) on the side facing away from the rubber main spring (22). The retaining ring (27) is sandwiched between the fourth flange (214) and the cup (24).

10. A vehicle, characterized in that: The vehicle is equipped with a hydraulic suspension (2) as described in any one of claims 5-9.

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