An external dual chamber hydraulic suspension assembly and a vehicle comprising the same

Abstract

This invention discloses an external dual-cavity hydraulic suspension assembly and a vehicle including the assembly, which can be divided into four parts: a frame assembly, a rubber main spring assembly, an internal hydraulic assembly, and an external hydraulic cavity assembly. A schematic diagram and exploded view of the external dual-cavity hydraulic suspension assembly are provided. The four parts are assembled into a single unit through a vulcanization process and dimensional interference fit. The internal hydraulic assembly is sequentially assembled inside the rubber main spring and placed in the lower half of the frame assembly. Then, the upper cover of the frame assembly is assembled with the lower half through dimensional interference fit. The external hydraulic cavity assembly is inserted into the component through a connector to form an internal seal, and finally, hydraulic fluid is injected to complete the final process.

Description

Technical Field

[0001] This invention belongs to the field of automotive technology and relates to an external dual-chamber hydraulic suspension assembly and a vehicle. Background Technology

[0002] As automobiles become a primary mode of transportation, their user base is growing, leading to increasing demands for overall vehicle comfort and noise reduction. Consequently, more and more issues arise during project development that require optimization and solutions through the suspension assembly. While current hydraulic suspensions offer improved performance, their optimizable frequency band remains limited by space constraints.

[0003] Patent CN 202210217450.0 discloses an automotive suspension structure, including: a suspension frame, a connecting support arm, a rubber main spring, a main spring base, and a hydraulic module; the suspension frame has an inner groove, the connecting support arm is inserted into the inner groove, the suspension frame is used to connect to the subframe, and the connecting support arm is used to connect to the powertrain; an inner cavity is formed between the suspension frame and the connecting support arm, the rubber main spring and the main spring base are both located in the inner cavity, and the rubber main spring is respectively bonded to the inner wall of the connecting support arm and the main spring base; the hydraulic module is detachably disposed on the upper side of the rubber main spring in the inner cavity; the hydraulic module includes: an assembly frame, a rubber cup, an upper flow channel cover, a decoupling membrane, and a lower flow channel cover, the assembly frame is barrel-shaped, and the rubber cup, the upper flow channel cover, the decoupling membrane, and the lower flow channel cover are arranged sequentially from top to bottom in the assembly frame, the rubber... An upper liquid chamber is formed between the rubber cup and the upper flow channel cover plate. At least one corresponding through hole is provided at the bottom of the rubber cup, the upper flow channel cover plate, the lower flow channel cover plate, and the assembly frame. A lower liquid chamber is formed between the bottom surface of the hydraulic module and the rubber main spring. The upper and lower liquid chambers are filled with damping fluid. However, this patent is limited by space constraints, resulting in a limited hydraulic chamber volume. Performance parameters such as dynamic stiffness and hysteresis angle sometimes fail to meet the requirements of the vehicle curve. Simultaneously, the outer edge of the decoupling membrane in this patent is recessed inward to form a flow channel. Under low-frequency, large-amplitude vibrations, the decoupling membrane is stretched to a larger position, resulting in greater stiffness, and fluid can only flow through the inertial channel. Under high-frequency, small-amplitude vibrations, the inertial channel is self-locking, and under small displacements, the decoupling membrane stiffness is smaller. Therefore, the fluid in the upper and lower liquid chambers can achieve dynamic pressure balance through the deformation of the decoupling membrane, thereby achieving vibration reduction. This vibration reduction method has a poor vibration reduction effect under low-frequency, large-amplitude vibrations. Summary of the Invention

[0004] To address the limitations of existing technologies, such as limited hydraulic chamber volume, performance parameters like dynamic stiffness and hysteresis angle sometimes failing to meet vehicle curve requirements, and poor vibration damping, the present invention aims to provide an external dual-chamber hydraulic suspension assembly and vehicle. Within the same space, by expanding the external hydraulic chamber, the fluid pressure within the flow channel is increased, thereby widening the adjustment range of dynamic stiffness and hysteresis angle. Simultaneously, by incorporating a switching hole in the middle of the decoupling diaphragm, the vibration damping effect of the suspension assembly under low-frequency, high-amplitude vibrations is improved.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0006] This invention discloses an external dual-chamber hydraulic suspension assembly, comprising: a frame assembly, a rubber main spring assembly, an internal hydraulic assembly, and an external hydraulic chamber assembly; the rubber main spring assembly is installed inside the frame assembly, the internal hydraulic assembly is installed inside the rubber main spring assembly, and the external hydraulic chamber assembly is installed outside the frame assembly, and the external hydraulic chamber assembly is connected to the internal hydraulic assembly installed inside the rubber main spring assembly; this invention, by providing an external hydraulic chamber, increases the overall hydraulic capacity, improves the liquid pressure, and expands the effective adjustment range of dynamic stiffness and hysteresis angle.

[0007] As a further technical solution, the rubber main spring assembly comprises a spindle, a rubber main spring, and a hydraulic outdoor frame. The rubber main spring is mounted on the hydraulic outdoor frame, and the spindle is inserted into its top. The inside of the rubber main spring is an inverted cavity, which can house the hydraulic component assembly. The hydraulic outdoor frame is a metal shell, which serves to fix the rubber main spring and protect the hydraulic components.

[0008] As a further technical solution, the spindle, rubber main spring, and hydraulic outdoor frame are connected into one piece through a vulcanization process.

[0009] As a further technical solution, the built-in hydraulic assembly consists of an upper flow channel cover, a lower flow channel cover, a bottom membrane, a bottom membrane skeleton, and a decoupling membrane; the upper flow channel cover is installed on the top inner ring of the lower flow channel cover, the two are inserted together, aligned at the center and hollow, and a decoupling membrane is set in the hollow position; both the upper and lower flow channel covers are provided with liquid flow ports, which allow the damping fluid to flow between the rubber main spring cavity and the bottom membrane; a bottom membrane is set at the bottom of the lower flow channel cover, and the bottom membrane is secured to the bottom of the skeleton assembly by the bottom membrane skeleton.

[0010] As a further technical solution, a switch hole is provided in the middle of the decoupling membrane to act as a switch, so that the damping fluid can flow in a single-channel mode or a dual-channel mode under different operating conditions.

[0011] As a further technical solution, the side wall of the lower flow channel cover is provided with an insertion port for installing the external hydraulic cavity assembly.

[0012] As a further technical solution, the frame assembly includes an upper cover housing and a lower cover housing assembled together; brackets are provided on both sides of the lower cover housing, and an insertion port for installing an external hydraulic cavity assembly is provided on the lower cover housing.

[0013] As a further technical solution, the bracket is provided with mounting holes for connecting to other parts of the vehicle.

[0014] As a further technical solution, the external hydraulic cavity assembly consists of an external hydraulic cavity and a sleeve; the external hydraulic cavity is a rubber cavity, which can fully absorb the impact force generated when the damping liquid flows; the opening is provided with a two-layer barbed structure, the sleeve and the external hydraulic cavity are integrated, one side of the sleeve extends into the cavity; the other side extends to the outside of the cavity neck.

[0015] Secondly, the present invention also provides an automobile equipped with the aforementioned external dual-chamber hydraulic suspension assembly.

[0016] The beneficial effects of the above embodiments of the present invention are as follows:

[0017] 1. This invention increases the overall hydraulic capacity and improves the liquid pressure by providing an external hydraulic chamber, thereby increasing the effective adjustment range of dynamic stiffness and hysteresis angle.

[0018] 2. The decoupling membrane of this invention has a switch hole in the middle, which acts as a switch, allowing the damping fluid to flow in either a single-channel or dual-channel mode under different operating conditions. Specifically, under low-frequency, large-amplitude conditions, the decoupling membrane is stretched to a larger position, and the switch hole in the middle is opened. The damping fluid flows between the upper and lower liquid chambers through the switch hole in the middle, and also flows through the liquid outlets on the upper and lower flow channel covers, achieving rapid vibration reduction. Under high-frequency, small-amplitude conditions, the decoupling membrane undergoes slight displacement, and the switch hole in the middle is not opened. The damping fluid only flows through the liquid outlets on the upper and lower flow channel covers. Therefore, by setting a switch hole in the middle of the decoupling membrane, rapid vibration reduction under low-frequency, large-amplitude conditions and vibration reduction under high-frequency, small-amplitude conditions can be achieved.

[0019] 3. The external hydraulic cavity assembly of the present invention consists of an external hydraulic cavity and a sleeve. The external hydraulic cavity is a rubber cavity, which can fully absorb the impact force generated during the flow of damped liquid. The opening is provided with a two-layer barb structure. When the cavity is inserted into the flow channel of the built-in hydraulic assembly, the inner barb deforms and can fully fit against the inner wall of the flow channel without falling out. The outer barb structure is squeezed by the deformation of the inner layer, forming a rebound force and improving the sealing ability between the inner barb and the inside of the flow channel. The sleeve is integrated with the external hydraulic cavity through a vulcanization process. One side of the sleeve extends into the cavity, which can reduce the risk of cracking or breaking of the cavity neck and body under stress. The other side extends to the outside of the cavity neck, which increases the hardness of the neck plug and makes it firmly connected to the built-in hydraulic chamber without deformation. Attached Figure Description

[0020] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0021] Figure 1 Schematic diagram of external dual-chamber hydraulic suspension assembly;

[0022] Figure 2 Exploded view of the external dual-chamber hydraulic suspension assembly;

[0023] Figure 3 : Schematic diagram of the skeleton assembly structure;

[0024] Figure 4 Exploded view of the skeleton assembly structure;

[0025] Figure 5 Schematic diagram of the rubber main spring assembly

[0026] Figure 6 Exploded view of the rubber main spring assembly structure;

[0027] Figure 7 : Schematic diagram of the built-in hydraulic assembly;

[0028] Figure 8 Exploded view of the built-in hydraulic assembly structure;

[0029] Figure 9 Schematic diagram of the external hydraulic cavity assembly;

[0030] Figure 10 Exploded view of the external hydraulic cavity assembly;

[0031] Figure 11 : Cross-sectional view of the internal structure of the external dual-chamber hydraulic suspension assembly assembled together;

[0032] In the diagram: 1. Rubber main spring assembly; 2. Frame assembly; 3. External hydraulic cavity assembly; 4. Internal hydraulic assembly.

[0033] 1-1 Mandrel, 1-2 Rubber Main Spring, 1-3 Hydraulic Outdoor Frame;

[0034] 2-1 Upper housing, 2-2 Lower housing, 2-3 Side supports;

[0035] 3-1 Upper flow channel cover, 3-2 Lower flow channel cover, 3-3 Bottom membrane, 3-4 Bottom membrane skeleton, 3-5 Decoupling membrane, 3-5-1 Switch hole.

[0036] 2-2-1 First socket, 1-3-1 Second socket, 3-2-1 Third socket;

[0037] 4-1 External hydraulic cavity, 4-2 Sleeve. Detailed Implementation

[0038] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0039] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0040] For ease of description, the words "up," "down," "left," and "right" appearing in this invention only indicate that they are consistent with the up, down, left, and right directions of the accompanying drawings themselves, and do not limit the structure. They are merely for the purpose of facilitating the description of this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0041] As described in the background section, existing automotive suspension structures are limited by space constraints and hydraulic chamber volume, and performance parameters such as dynamic stiffness and hysteresis angle sometimes fail to meet the requirements of the vehicle curve. To solve the above technical problems, this invention proposes an external dual-chamber hydraulic suspension assembly, which is mainly divided into four parts: the first part is the skeleton assembly, the second part is the rubber main spring assembly, the third part is the built-in hydraulic assembly, and the fourth part is the external hydraulic chamber assembly.

[0042] The first part, the skeleton assembly, is a simple structural component that serves to fix the internal structure and form a transmission connection with the outer boundary.

[0043] The second part is the rubber main spring assembly, which has a built-in threaded mandrel through a vulcanization process. The mandrel is fixed to the outer boundary. Through the vulcanization process, it is connected to the outdoor frame assembly, providing assembly space for the hydraulic components.

[0044] The third part is the built-in hydraulic assembly, which consists of a flow channel plate, flow channel, decoupling membrane, bottom membrane, bottom membrane skeleton, damping fluid, and steel balls; together with the rubber main spring, it forms a sealed hydraulic space; the damping fluid flows in a single-channel mode or a dual-channel mode under the action of external load.

[0045] The fourth part is the external hydraulic chamber assembly, which is an external component that is connected to the frame assembly and the internal hydraulic assembly through an interference fit. It plays the role of expanding the flow channel and can effectively improve the damping requirements. By setting an external hydraulic chamber, this invention increases the overall hydraulic capacity, improves the liquid pressure, and increases the effective adjustment range of dynamic stiffness and hysteresis angle.

[0046] In a typical embodiment of the present invention, such as Figure 1 As shown, the external dual-cavity hydraulic suspension assembly disclosed in this embodiment can be divided into four parts: the frame assembly 2, the rubber main spring assembly 1, the internal hydraulic assembly 3, and the external hydraulic cavity assembly 4. Figure 1 As shown, the schematic diagram and exploded view of the external dual-cavity hydraulic suspension assembly are shown. The four-part assembly is assembled into one unit through vulcanization and dimensional interference fit. The internal hydraulic assembly 3 is assembled into the rubber main spring assembly 1 in sequence and then placed in the lower half of the frame assembly 2. Then the upper cover of the frame assembly 2 is assembled with the lower half through dimensional interference fit. The external hydraulic cavity assembly is inserted into the component through the insertion port to form an internal seal. Finally, the liquid is injected to complete the final process.

[0047] The structure of skeleton assembly 2 in this embodiment is as follows: Figure 2 The diagram shows a schematic diagram and exploded view of the frame assembly 2. The frame assembly 2 is a sheet metal stamping structure, serving to fix the internal structure and form a transmission connection with the outer boundary. Specifically, it consists of four parts: an upper cover shell 2-1, a lower cover shell 2-2, and two side supports 2-3. The two side supports 2-3 are connected to the outer wall of the lower cover shell 2-2 by welding. One support is installed on the left side of the lower cover shell 2-2, and the other is installed on the right side. Mounting holes are provided on the two side supports 2-3 for connection to the outer boundary, such as the vehicle body longitudinal beam. Furthermore, the lower cover shell 2-2 has a first insertion port 2-2-1 for inserting an external hydraulic chamber. The upper cover shell 2-1 is press-fitted with the lower cover shell 2-2 through dimensional interference fit, protecting the internal rubber hydraulic assembly and connecting to the outer boundary.

[0048] Furthermore, in this embodiment, the upper cover shell 2-1 is a cylindrical body with an open bottom and an open top. The open bottom is mainly for connecting with the lower cover shell 2-2, and the open top is mainly for the spindle of the rubber main spring assembly 1 to pass through.

[0049] Furthermore, in this embodiment, the lower cover housing 2-2 is a cylindrical body with an open top and an open bottom. The open top is mainly for fitting with the top of the upper cover housing 2-1, and the open bottom is mainly for fitting with the bottom diaphragm 3-3 of the built-in hydraulic assembly. In this way, the lower cover housing 2-2 and the upper cover housing 2-1 are combined to form the installation space for the rubber main spring assembly 1 and the built-in hydraulic assembly 3.

[0050] In this embodiment, the rubber main spring assembly 1 is a component in the suspension structure used to provide cushioning, such as... Figure 3 The diagram shows a schematic diagram and an exploded view of the rubber main spring assembly 1. It consists of a mandrel 1-1, a rubber main spring 1-2, and a hydraulic outdoor frame 1-3, which are connected as a single unit through a vulcanization process. The rubber main spring 1-2 has an inverted cavity (smaller upper radius and larger lower radius) that can house the hydraulic component assembly. The hydraulic outdoor frame 1-3 is a metal shell that serves to fix the shape, ensure assembly dimensions, and protect the hydraulic components. The rubber main spring 1-2 is installed on the top and inside of the hydraulic outdoor frame 1-3, and the mandrel 1-1 is inserted into the rubber main spring 1-2. A second insertion port 1-3-1 is provided on the side of the hydraulic outdoor frame 1-3. The position of the second insertion port 1-3-1 corresponds to the position of the first insertion port 2-2-1.

[0051] The rubber main spring 1-2 is a rubber pad structure made of rubber material, which is used to buffer the impact. Its top is connected to the spindle 1-1, and the spindle 1-1 is connected to the car engine through a special-shaped bracket. The rubber main spring 1-2, together with the upper flow channel cover 3-1 and the decoupling membrane 3-5 below, forms an upper liquid chamber, so that the rubber main spring 2-1 can better cooperate with the built-in hydraulic assembly 1, so that the built-in hydraulic assembly 1 can play its role.

[0052] In this embodiment, the built-in hydraulic assembly is installed inside the rubber main spring assembly 1, such as... Figure 4 The diagram shows a schematic diagram and exploded view of the built-in hydraulic assembly 3. The built-in hydraulic assembly 3 consists of an upper flow channel cover 3-1, a lower flow channel cover 3-2, a bottom membrane 3-3, a bottom membrane skeleton 3-4, and a decoupling membrane 3-5.

[0053] The upper flow channel cover 3-1 is installed on the top inner ring of the lower flow channel cover 3-2. The two are inserted together, aligned at the center and hollow, with a decoupling membrane 3-5 placed in the hollow position. A third insertion port 3-2-1 is provided on the side wall of the lower flow channel cover 3-2. The third insertion port 3-2-1 corresponds to the positions of the second insertion port 1-3-1 and the first insertion port 2-2-1, allowing the external hydraulic cavity assembly to be inserted and form an integral part with the internal hydraulic channel, thus expanding the flow channel cavity. Both the channel cover 3-1 and the lower channel cover 3-2 are provided with liquid flow ports, which allow the damping fluid to flow between the rubber main spring cavity and the bottom membrane. The bottom membrane 3-3 is provided at the bottom of the lower channel cover 3-2. The bottom membrane 3-3 is a rubber structure, which can buffer the flow impact of the damping fluid. The bottom membrane skeleton 3-4 can effectively lock the bottom membrane 3-3 into the bottom of the lower cover shell 2-2 of the skeleton assembly to prevent deformation and leakage. The lower channel cover 3-2, the decoupling membrane 3-5, and the bottom membrane 3-3 form a lower liquid cavity.

[0054] A switch hole is provided in the middle of the decoupling membrane 3-5, which acts as a switch, allowing the damping fluid to flow in either a single-channel or dual-channel mode under different operating conditions. Specifically, under low-frequency, large-amplitude conditions, the decoupling membrane is stretched to a larger position, and the switch hole in the middle is opened. The damping fluid flows between the upper and lower liquid chambers through the switch hole in the middle, and also flows through the liquid flow ports on the upper flow channel cover 3-1 and the lower flow channel cover 3-2. Under high-frequency, small-amplitude conditions, the decoupling membrane undergoes slight displacement, and the switch hole in the middle is not opened. The damping fluid flows only through the liquid flow ports on the upper flow channel cover 3-1 and the lower flow channel cover 3-2. Therefore, by providing a switch hole 3-5-1 in the middle of the decoupling membrane 3-5, rapid vibration reduction under low-frequency, large-amplitude conditions can be achieved with good vibration reduction effect, while vibration reduction can also be achieved under high-frequency, small-amplitude conditions.

[0055] Coupling refers to the phenomenon where two or more systems or two forms of motion influence each other and even unite through interaction. Decoupling is the process of breaking this union. The function of the decoupling membrane 3-5 is decoupling.

[0056] The diameter of the aforementioned switch hole can be designed according to the specific structure of the hydraulic suspension assembly in the actual vehicle, as well as the thickness of the decoupling membrane 3-5, vibration reduction requirements, etc., as long as it can achieve the switching effect.

[0057] Furthermore, the aforementioned damping fluid is an oily liquid that can reduce the kinetic energy of moving machinery by relying on the viscous resistance of the liquid medium, thereby shortening the mechanical oscillation or motion time.

[0058] Furthermore, the entire device is equipped with a liquid inlet, which is used to inject damping fluid into the upper and lower liquid chambers. The liquid inlet is sealed by attaching the cover to it. The injected damping fluid flows through the annular channel of the upper flow channel cover, through the liquid outlet on the upper flow channel cover, into the lower flow channel cover, and then into the lower chamber.

[0059] In this embodiment, the external hydraulic cavity assembly 4, such as Figure 5 The diagram shows a schematic and exploded view of the external hydraulic cavity assembly 4. It consists of an external hydraulic cavity 4-1 and a sleeve 4-2. The external hydraulic cavity 4-1 is a rubber cavity, which can fully absorb the impact force generated when the fluid flows. The opening is provided with a two-layer barb structure. When the cavity is inserted into the flow channel of the built-in hydraulic assembly, the inner barb deforms and can fully fit against the inner wall of the flow channel, so it will not fall out. The outer barb structure is squeezed by the deformation of the inner layer, forming a rebound force, which improves the sealing ability between the inner barb and the inside of the flow channel. The sleeve 4-2 is integrated with the external hydraulic cavity 4-1 through a vulcanization process. One side of the sleeve 4-1 extends into the cavity, which can reduce the risk of cracking and breakage of the cavity neck and body under stress. The other side extends to the outside of the cavity neck, which increases the hardness of the neck plug and makes it firmly connected to the built-in hydraulic chamber without deformation.

[0060] This embodiment also provides a vehicle whose suspension assembly adopts the aforementioned suspension assembly. Since the vehicle is equipped with the suspension assembly described above, it also possesses all the advantages described above. In some embodiments, the vehicle provided by this invention can be any suitable type of vehicle, such as automobiles, new energy vehicles, etc. This invention is not limited to any particular vehicle type.

[0061] Finally, it should be noted that relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0062] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An externally mounted dual chamber hydraulic suspension assembly, characterized by, include: The frame assembly, the rubber main spring assembly, the built-in hydraulic assembly, and the external hydraulic cavity assembly are all included. The rubber main spring assembly is installed inside the frame assembly, the built-in hydraulic assembly is installed inside the rubber main spring assembly, and the external hydraulic cavity assembly is installed outside the frame assembly. The external hydraulic cavity assembly is connected to the built-in hydraulic assembly installed inside the rubber main spring assembly. The built-in hydraulic assembly consists of an upper flow channel cover, a lower flow channel cover, a bottom membrane, a bottom membrane skeleton, and a decoupling membrane; a switch hole is provided in the middle of the decoupling membrane, which allows the damping fluid to flow in a single-channel mode or a dual-channel mode; The external hydraulic cavity assembly consists of an external hydraulic cavity and a sleeve; the external hydraulic cavity is a rubber cavity, which can fully absorb the impact force generated when the damping liquid flows; the opening is provided with a two-layer barbed structure, the sleeve and the external hydraulic cavity are integrated, one side of the sleeve extends into the cavity; the other side extends to the outside of the cavity neck.

2. The external dual-chamber hydraulic suspension assembly as described in claim 1, characterized in that, The rubber main spring assembly comprises a spindle, a rubber main spring, and a hydraulic outdoor frame. The rubber main spring is mounted on the hydraulic outdoor frame, and the spindle is inserted into its top. The rubber main spring has an inverted cavity inside, housing the hydraulic component assembly. The hydraulic outdoor frame is a metal shell, which serves to fix the rubber main spring and protect the hydraulic components.

3. The external dual-chamber hydraulic suspension assembly as described in claim 2, characterized in that, The spindle, rubber main spring, and hydraulic outdoor frame are connected into one piece through a vulcanization process.

4. The external dual-chamber hydraulic suspension assembly as described in claim 1, characterized in that, The upper flow channel cover is installed on the top inner ring of the lower flow channel cover. The two are inserted together, aligned at the center and hollow. A decoupling membrane is set in the hollow position. Both the upper and lower flow channel covers are provided with liquid flow ports, which allow the damping fluid to flow between the rubber main spring cavity and the bottom membrane. A bottom membrane is set at the bottom of the lower flow channel cover, and the bottom membrane is fixed to the bottom of the frame assembly by the bottom membrane skeleton.

5. The external dual-chamber hydraulic suspension assembly as described in claim 4, characterized in that, The side wall of the lower flow channel cover is provided with an insertion port for installing the external hydraulic cavity assembly.

6. The external dual-chamber hydraulic suspension assembly as described in claim 1, characterized in that, The frame assembly includes an upper cover housing and a lower cover housing assembled together; brackets are provided on both sides of the lower cover housing, and an insertion port for installing an external hydraulic cavity assembly is provided on the lower cover housing.

7. The external dual-chamber hydraulic suspension assembly as described in claim 6, characterized in that, The bracket is provided with mounting holes.

8. A vehicle, characterized in that, Includes the external dual-chamber hydraulic suspension assembly as described in any one of claims 1-7.

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