Suspension system and vehicle

Abstract

A suspension system and a vehicle. The suspension system comprises a controller, an oil pump, and a shock absorber; the controller is electrically connected to the oil pump, the oil pump is communicated with the shock absorber by means of an oil pipe, and the controller adjusts the oil pressure in the shock absorber by means of the oil pump to drive the shock absorber to extend and contract; and a pressure sensor is provided on the oil pipe, the pressure sensor is communicationally connected to the controller, and the pressure sensor is configured to measure the oil pressure in the oil pipe.

Description

Suspension systems and vehicles

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on November 30, 2023, with application number 202323276797.1 and invention name “Suspension System and Vehicle”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present disclosure relates to the field of vehicle technology, and in particular to a suspension system and a vehicle. Background Art

[0003] The suspension system connects the vehicle's frame (also known as the body) and wheels, serving as a crucial component for transmitting forces and torques acting between them. Shock absorbers in the suspension system cushion the impact of road surface irregularities on the vehicle frame, reducing the resulting vibrations and ensuring a smooth ride. Hydraulic suspension systems, in particular, utilize hydraulic pressure provided by an oil pump to drive the shock absorbers. Hydraulic suspension systems are widely used in vehicles due to their low cost and high reliability.

[0004] However, the hydraulic suspension system in the prior art is usually unable to collect the magnitude of the hydraulic pressure acting on the shock absorber, which is not conducive to the autonomous adjustment of the suspension system.

[0005] Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the existing technology, the present disclosure aims to provide a suspension system that, by optimizing its structure, ensures that the suspension system can achieve autonomous adjustment while also optimizing the suspension system's spatial layout and improving space utilization. Furthermore, the present disclosure provides a vehicle equipped with the suspension system. Specifically, the present disclosure includes the following solutions:

[0007] In a first aspect, the present disclosure provides a suspension system, comprising a controller, an oil pump, and a shock absorber; the controller is electrically connected to the oil pump, and the oil pump and the shock absorber are connected via an oil pipe. The controller adjusts the oil pressure in the shock absorber via the oil pump to drive the shock absorber to extend and retract;

[0008] A pressure sensor is provided on the oil pipe, which is communicatively connected to the controller and is used to detect the oil pressure in the oil pipe.

[0009] The suspension system disclosed in the present invention controls the state of the oil pump by setting a controller, that is, controlling the speed and direction of the motor in the oil pump, so as to control the oil pressure in the oil pipe and the flow direction of the hydraulic oil. Based on the fact that the shock absorber is connected between the frame and the wheel of the vehicle, the oil pump is set to provide a certain oil pressure to the shock absorber to drive the shock absorber to expand and contract, thereby adjusting the relative position between the frame and the wheel. Furthermore, a pressure sensor is set on the oil pipe connecting the oil pump and the shock absorber to detect the oil pressure in the oil pipe in real time. At the same time, a pressure sensor is set to communicate with the controller so as to transmit the detection signal to the controller. The controller adjusts the speed and / or direction of the oil pump according to the detection signal and the driving conditions of the vehicle (such as the vehicle's operating state and road conditions) to correct the oil pressure in the oil pipe, thereby accurately controlling the expansion and contraction of the shock absorber.

[0010] As you can understand, the disclosed suspension system utilizes a pressure sensor installed on the oil pipe to monitor the pressure within the pipe in real time. This allows the controller to dynamically and adaptively adjust the shock absorber based on the vehicle's driving conditions, ensuring the shock absorber maintains optimal expansion and contraction. Furthermore, integrating the pressure sensor into the oil pipe optimizes space layout and improves space utilization.

[0011] In one embodiment, the shock absorber includes a hydraulic cylinder and a piston rod, wherein one end of the piston rod extends into the hydraulic cylinder to separate the hydraulic cylinder into a first inner chamber and a second inner chamber.

[0012] In this embodiment, the relative position between the vehicle frame and wheels, and thus the vehicle's height, is adjusted by adjusting the position of the piston rod within the hydraulic cylinder. By controlling the oil volume differential between the first and second cavities using an oil pump, the piston rod undergoes reciprocating telescopic motion, thereby adjusting the relative position between the vehicle frame and wheels.

[0013] In one embodiment, the oil pipe includes a joint connected to the oil pump or the shock absorber. The joint is provided with a through hole penetrating one side along its radial direction, and the pressure sensor is embedded in the through hole.

[0014] In this embodiment, a joint is provided to ensure the reliability of the connection between the oil pipe and the oil pump or the shock absorber. A through hole is provided on the joint to facilitate the fixing of the pressure sensor and ensure that the pressure sensor can accurately detect the pressure in the oil pipe.

[0015] In one embodiment, the pressure sensor includes a detection section and a fixing section. The detection section is closer to the interior of the joint than the fixing section, and the fixing section is provided with threads.

[0016] In this embodiment, the pressure sensor is provided with a detection section and a fixing section. The detection section is used to connect to the oil pipe and detect the oil pressure in the oil pipe. The fixing section is provided with threads and engages with the inner wall of the through hole to securely fix the pressure sensor to the oil pipe.

[0017] In one embodiment, a sealing member is further provided between the pressure sensor and the through hole, and the sealing member is used to prevent the hydraulic oil in the oil pipe from leaking from the through hole.

[0018] In this embodiment, a seal is provided between the pressure sensor and the through hole to seal the through hole, thereby preventing the hydraulic oil in the oil pipe from leaking from the through hole, thereby improving the safety performance of the suspension system disclosed herein.

[0019] In one embodiment, a temperature sensor is provided on the oil pipe, the temperature sensor is communicatively connected to the controller, and the temperature sensor is used to detect the oil temperature in the oil pipe.

[0020] In this embodiment, a temperature sensor is provided on the oil pipe, and the temperature sensor transmits the detected oil temperature in the oil pipe to the controller, so that the controller can intelligently adjust the working status of other functional components in the suspension system according to the detection signal to ensure that the oil temperature is maintained within a normal range.

[0021] In one embodiment, the pressure sensor and the temperature sensor are integrated into one structure.

[0022] In this embodiment, the pressure sensor and the temperature sensor are set as an integrated structure to ensure that the suspension system can collect both the oil pressure and the oil temperature in the oil pipe, which facilitates the intelligent adjustment of the controller, while also reducing costs and improving space utilization.

[0023] In one embodiment, the suspension system includes an accumulator connected to the oil pipe. The accumulator is used to absorb hydraulic oil in the oil pipe or release hydraulic oil into the oil pipe to adjust pressure fluctuations in the oil pipe.

[0024] In this embodiment, an accumulator connected to the oil pipe is provided to convert excess hydraulic energy into elastic potential energy for storage when the pressure in the oil pipe is too high. This can effectively offset pressure fluctuations in the oil pipe and avoid hydraulic shock, thereby reducing noise, protecting components in the system and improving the operating stability of the system; when the pressure in the oil pipe is insufficient, the accumulator releases the stored energy to improve the response speed of the system.

[0025] In one embodiment, the accumulator includes a shell having a receiving cavity, an air bag received in the receiving cavity, and an interface connecting the outside with the receiving cavity.

[0026] In one embodiment, there are two accumulators, which are arranged on both sides of the pressure sensor along the length direction of the oil pipe.

[0027] In this embodiment, by arranging accumulators on both sides of the pressure sensor along the length direction of the oil pipe, it is possible to effectively prevent the pressure sensor from being damaged by hydraulic shock in the oil pipe.

[0028] In one embodiment, the oil pipe includes a flexible section for allowing the oil pipe to be displaced relative to the oil pump or the shock absorber.

[0029] In this embodiment, a flexible section is provided in the oil pipe to facilitate the layout of the suspension system. The flexible section also has the function of absorbing pressure fluctuations in the oil pipe, thereby reducing noise to a certain extent.

[0030] In one embodiment, the flexible section and the joint are connected by a press-fitting process.

[0031] In this embodiment, the press-fitting process is relatively simple. Using the press-fitting process to connect the joint and the flexible section can not only ensure the connection reliability and sealing between the joint and the flexible section, but also simplify the structure of the oil pipe and reduce production costs.

[0032] In a second aspect, the present disclosure provides a vehicle comprising a frame, wheels, and a suspension system according to any one of the above embodiments, wherein the suspension system is connected between the frame and the wheels and is used to adjust the height of the frame.

[0033] It can be understood that the vehicle provided in the second aspect of the present disclosure adopts the suspension system provided in the first aspect of the present disclosure, and thus also has all possible beneficial effects of the suspension system in any embodiment of the first aspect of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0035] FIG1 is a schematic structural diagram of a suspension system provided in one embodiment of the present disclosure;

[0036] FIG2 is a schematic structural diagram of an oil pipe provided in one embodiment of the present disclosure;

[0037] FIG3 is a schematic diagram of a cross-sectional structure of an oil pipe provided in an embodiment of the present disclosure;

[0038] FIG4 is a partial enlarged view of point A in FIG3 ;

[0039] FIG5 is a schematic diagram of a cross-sectional structure of an oil pipe provided in another embodiment of the present disclosure;

[0040] FIG6 is a schematic diagram of the cross-sectional structure of an oil pipe provided in yet another embodiment of the present disclosure.

[0041] Figure numbers: 200-suspension system; 10-controller; 20-oil pump; 30-oil pipe; 30a-first oil pipe; 30b-second oil pipe; 31-connector; 31a-first connector; 31b-second connector; 311-fixed block; 312-through hole; 32-flexible section; 33-through hole; 34-mounting hole; 40-shock absorber; 41-hydraulic cylinder; 41a-first inner cavity; 41b-second inner cavity; 42-piston rod; 50-pressure sensor; 51-detection section; 52-fixed section; 60-seal; 70-temperature sensor; 80-accumulator; 81-housing; 82-airbag; 83-receiving cavity; 84-interface. DETAILED DESCRIPTION

[0042] To facilitate understanding of the present disclosure, a more comprehensive description of the present disclosure will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present disclosure. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure.

[0043] The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present disclosure can be used to implement. The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present disclosure include direct and indirect connections (couplings) unless otherwise specified. The directional terms mentioned in the present disclosure, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the present disclosure, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0044] In the description of this disclosure, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. A person of ordinary skill in the art will understand the specific meanings of the above terms in this disclosure based on the specific circumstances. It should be noted that the terms "first," "second," and so on, in the specification, claims, and drawings of this disclosure are used to distinguish between different objects, not to describe a specific order. Furthermore, the terms "include," "may include," "comprise," or "may include" used in this disclosure indicate the presence of the corresponding functions, operations, components, etc. disclosed, and do not limit the presence or absence of one or more additional functions, operations, components, etc. Furthermore, the terms "include" or "comprising" indicate the presence of the corresponding features, numbers, steps, operations, elements, components, or combinations thereof disclosed in the specification, and do not exclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof, and are intended to cover non-exclusive inclusions.

[0045] It should be noted that, in one embodiment, the suspension system provided by the present disclosure can be used in a vehicle. The suspension system connects the vehicle body and wheels and is used to transmit force and torque. The suspension system can also adjust the relative distance between the frame and wheels to change the ground clearance of the frame. In other words, the suspension system can adjust the height of the vehicle, making it suitable for different operating conditions and mitigating the impact of the road on the frame, thereby improving the vehicle's driving stability and comfort.

[0046] For example, when the vehicle is driving at high speed, the suspension system can reduce the relative distance between the frame and the wheels to reduce wind resistance and improve the vehicle's driving stability; when the vehicle is driving on a low road, the suspension system can increase the relative distance between the frame and the wheels to improve the vehicle's passability.

[0047] Please refer to FIG. 1 , which is a schematic structural diagram of a suspension system 200 provided in an embodiment of the present disclosure.

[0048] As shown in FIG1 , in one embodiment, the suspension system 200 of the present disclosure includes a controller 10, an oil pump 20, an oil pipe 30, and a shock absorber 40. The oil pump 20 is electrically connected to the controller 10, and the oil pump 20 and the shock absorber 40 are connected via the oil pipe 30. The controller 10 controls the state of the oil pump 20 to adjust the oil pressure provided to the shock absorber 40, thereby controlling the extension and contraction of the shock absorber 40 to adjust the relative position between the vehicle frame and the wheel.

[0049] Specifically, the shock absorber 40 includes a hydraulic cylinder 41 and a piston rod 42. One end of the piston rod 42 extends into the hydraulic cylinder 41, and the other end is fixedly connected to the vehicle frame. The hydraulic cylinder 41 is then fixedly connected to the wheel (not shown). The controller 10 controls the speed of the oil pump 20 to pressurize the hydraulic oil. The oil pump 20 delivers the pressurized hydraulic oil to the hydraulic cylinder 41 via the oil pipe 30. The hydraulic oil pushes the piston rod 42 to slide relative to the hydraulic cylinder 41. By adjusting the position of the piston rod 42 within the hydraulic cylinder 41, the relative position between the vehicle frame and the wheel can be adjusted, thereby adjusting the height of the vehicle.

[0050] It should be noted that the connection relationship between the hydraulic cylinder 41 and the piston rod 42 and the vehicle frame and wheels in the above embodiment is merely exemplary. That is, in other embodiments of the present disclosure, the hydraulic cylinder 41 may be fixedly connected to the vehicle frame, and the piston rod 42 may be fixedly connected to the wheels. Adjusting the relative position of the piston rod 42 within the hydraulic cylinder 41 can also achieve vehicle height adjustment, and this is not particularly limited in the present disclosure.

[0051] Furthermore, the suspension system 200 of the present disclosure also includes a pressure sensor 50. The pressure sensor 50 is disposed on the oil pipe 30 and is in communication with the controller 10. The pressure sensor 50 can detect the oil pressure in the oil pipe 30 in real time and feed the detection signal back to the controller 10. Based on the detection signal and the driving conditions of the vehicle (such as the vehicle's operating status and road conditions), the controller 10 adjusts the speed and / or direction of the oil pump 20 to correct the oil pressure in the oil pipe 30, thereby precisely controlling the position of the piston rod 42 in the hydraulic cylinder 41, and thus precisely controlling the extension and contraction of the shock absorber 40.

[0052] As will be appreciated, the disclosed suspension system 200 utilizes a pressure sensor 50 disposed on the oil pipe 30 to monitor the pressure within the oil pipe 30 in real time. This allows the controller 10 to dynamically and adaptively adjust the shock absorber 40 based on the vehicle's driving conditions, ensuring that the shock absorber 40 maintains its optimal extension and contraction state. Furthermore, integrating the pressure sensor 50 on the oil pipe 30 optimizes the space layout and improves space utilization.

[0053] In the embodiment shown in Figure 1, the hydraulic cylinder 41 includes a first inner chamber 41a and a second inner chamber 41b. Specifically, the piston rod 42 extends into the hydraulic cylinder 41 and is sealed therewith, dividing the hydraulic cylinder 41 into the first inner chamber 41a and the second inner chamber 41b. For ease of description, the first inner chamber 41a can be defined as being closer to the vehicle frame than the second inner chamber 41b. The oil pipe 30 includes a first oil pipe 30a and a second oil pipe 30b. The first oil pipe 30a connects the oil pump 20 to the first inner chamber 41a, while the second oil pipe 30b connects the oil pump 20 to the second inner chamber 41b. By controlling the oil volume difference between the first inner chamber 41a and the second inner chamber 41b by the oil pump 20, the piston rod 42 can produce reciprocating telescopic motion, thereby adjusting the relative position between the vehicle frame and the wheel.

[0054] As can be appreciated, adjusting the relative position between the vehicle frame and wheels, i.e., adjusting the vehicle's height, based on actual conditions during driving can improve vehicle stability and comfort. For example, when the vehicle is traveling at high speed, the oil pump 20 pumps hydraulic oil from the second inner chamber 41b back to the oil pump 20 via the second oil pipe 30b and delivers it to the first inner chamber 41a via the first oil pipe 30a. This causes the hydraulic oil in the first inner chamber 41a to exceed that in the second inner chamber 41b, thereby causing the piston rod 42 to slide toward the wheel, lowering the vehicle's height and improving its stability. When the vehicle is traveling on a low road, the oil pump 20 pumps hydraulic oil from the first inner chamber 41a back to the oil pump 20 via the first oil pipe 30a and delivers it to the second inner chamber 41b via the second oil pipe 30b. This causes the hydraulic oil in the second inner chamber 41b to exceed that in the first inner chamber 41a, thereby causing the piston rod 42 to slide toward the frame, raising the vehicle's height and improving its maneuverability.

[0055] Please refer to Figures 2 and 3, where Figure 2 is a structural diagram of the oil pipe 30 provided in an embodiment of the present disclosure, and Figure 3 is a cross-sectional structural diagram of the oil pipe 30 provided in an embodiment of the present disclosure.

[0056] As shown in Figures 1 to 3, in one embodiment, the oil pipe 30 includes a joint 31 and a flexible section 32. Specifically, the flexible section 32 can be a rubber hose. There are two joints 31, and the two joints 31 are located at opposite ends of the flexible section 32 along its own length and are connected to the flexible section 32. For ease of introduction, the two joints 31 are defined as a first joint 31a and a second joint 31b. The first joint 31a is used to connect to the oil pump 20, and the second joint 31b is used to connect to the hydraulic cylinder 41 in the shock absorber 40. The first joint 31a is provided with a through hole 33 running through one side along its own radial direction, and the pressure sensor 50 is embedded in the through hole 33.

[0057] As will be appreciated, in this embodiment, the first joint 31a and the second joint 31b are provided to ensure reliable connection between the oil pipe 30 and the oil pump 20 and shock absorber 40. A through hole 33 is also provided in the first joint 31a to facilitate securing the pressure sensor 50 and ensure that the pressure sensor 50 can accurately detect the pressure within the oil pipe 30. Furthermore, a flexible section 32 is provided in the oil pipe 30 to allow displacement of the oil pipe 30 relative to the oil pump 20 or shock absorber 40, thereby facilitating the layout of the suspension system 200. The flexible section 32 also serves to absorb pressure fluctuations within the oil pipe 30, thereby reducing noise to a certain extent.

[0058] It should be noted that the number and position of through holes 33 and pressure sensors 50 in the above embodiment are for illustrative purposes only and do not represent the actual number and position of through holes 33 and pressure sensors 50 in other embodiments. In other words, the number and position of through holes 33 and pressure sensors 50 in the present disclosure can be adaptively adjusted based on actual application scenarios, and this disclosure does not impose any particular limitations on this.

[0059] In one embodiment, the connector 31 is made of a metal material. It is understood that using a metal material to make the connector 31 can ensure the strength of the connection between the connector 31 and the oil pump 20 or the shock absorber 40, and at the same time facilitates the fixed installation of the pressure sensor 50. It should be noted that the materials used to make 31 in the above embodiment are only for illustrative purposes and do not represent the materials used for connectors in other embodiments of the present disclosure. For example, in another embodiment, the connector 31 can be made of hard plastic, which can also ensure the strength of the connection between the connector 31 and the oil pump 20 or the shock absorber 40. This disclosure is not limited to this.

[0060] Please refer to FIG. 4 , which is a partial enlarged view of point A in FIG. 3 .

[0061] As shown in Figures 1 to 4, in one embodiment, the pressure sensor 50 includes a detection section 51 and a fixed section 52. The detection section 51 is closer to the inside of the connector 31 than the fixed section 52, and is used to detect the oil pressure in the oil pipe 30. The fixed section 52 is provided with a thread on the periphery, and the fixed section 52 extends into the through hole 33 and abuts against the inner wall of the through hole 33 to fix the pressure sensor 50 in the through hole 33. Or it can be understood that the pressure sensor 50 and the connector 31 are connected by a thread. It can be understood that in this embodiment, by connecting the pressure sensor 50 and the connector 31 in the form of a threaded connection, the connection reliability between the pressure sensor 50 and the connector 31 can be ensured.

[0062] In one embodiment, the flexible section 32 and the connector 31 are connected using a press-fit process. As will be appreciated, due to the relative simplicity of the press-fit process, utilizing the press-fit process to connect the connector 31 and the flexible section 32 not only ensures connection reliability and sealing between the connector 31 and the flexible section 32, but also simplifies the structure of the oil pipe 30 and reduces production costs.

[0063] In the embodiment shown in FIG4 , a seal 60 is further provided between the pressure sensor 50 and the through hole 33. The seal 60 is used to prevent the hydraulic oil in the oil pipe 30 from leaking from the through hole 33. Specifically, the seal 60 can be configured as a sealing gasket or a sealing ring. The seal 60 is sleeved around the periphery of the fixed section 52 to seal and fill the gap between the pressure sensor 50 and the through hole 33.

[0064] It is understandable that in this embodiment, a seal 60 is provided between the pressure sensor 50 and the through hole 33 to seal the through hole 33 and prevent the hydraulic oil in the oil pipe 30 from leaking from the through hole 33 , thereby improving the safety performance of the suspension system 200 disclosed herein.

[0065] Please refer to FIG5 , which is a schematic diagram of the cross-sectional structure of an oil pipe 30 provided in another embodiment of the present disclosure.

[0066] As shown in FIG5 , in one embodiment, a temperature sensor 70 is provided on the oil pipe 30. Specifically, the temperature sensor 70 may also be provided on the connector 31. The temperature sensor 70 is used to detect the oil temperature within the oil pipe 30 in real time. The temperature sensor 70 can also be communicatively connected to the controller 10 to transmit a detection signal to the controller 10. It will be appreciated that in this embodiment, providing the temperature sensor 70 on the oil pipe 30 to detect the oil temperature within the oil pipe 30 in real time facilitates the controller 10 to intelligently adjust the operating states of other functional components in the suspension system 200 based on the detection signal, ensuring that the oil temperature remains within a normal range and that the suspension system 200 operates normally.

[0067] It should be noted that the connection between the temperature sensor 70 and the controller 10 in the above embodiment is only an example. For example, in another embodiment, the temperature sensor 70 can be electrically connected to the controller 10 and can also transmit the detection signal to the controller 10.

[0068] In one embodiment, the pressure sensor 50 and the temperature sensor 70 are integrated. That is, a two-in-one pressure and temperature sensor can be used to detect both the pressure and temperature within the oil pipe 30. As will be appreciated, integrating the pressure sensor 50 and the temperature sensor 70 ensures that the suspension system 200 can detect both the oil pressure and the oil temperature within the oil pipe 30, facilitating intelligent adjustments by the controller 10 while also reducing costs and improving space utilization.

[0069] Please refer back to Figure 4. In one embodiment, the suspension system 200 disclosed herein further includes an accumulator 80. The accumulator 80 includes a shell 81 formed with a receiving chamber 83, an airbag 82, and an interface 84 connecting the outside with the receiving chamber 83. The airbag 82 is received in the receiving chamber 83, and the airbag 82 is filled with gas. The joint 31 includes a mounting hole 34 that is provided with a side passing through along its own radial direction. The interface 84 is fixed to the oil pipe 30 through the mounting hole 34 and connects the receiving chamber 83 of the accumulator 80 with the oil pipe 30. A small amount of hydraulic oil is also filled in the receiving chamber 83. The accumulator 80 is used to absorb the hydraulic oil in the oil pipe 30 or to release the hydraulic oil into the oil pipe 30 to adjust the pressure fluctuations in the oil pipe 30.

[0070] Specifically, when the oil pressure in the oil pipe 30 suddenly increases, the hydraulic oil in the oil pipe 30 can enter the receiving chamber 83, and the gas volume in the airbag 82 decreases as the oil pressure increases, so that the hydraulic oil is stored in the receiving chamber 83 to offset the pressure fluctuations in the oil pipe 30 and avoid hydraulic shock, thereby reducing noise, protecting components in the suspension system 200 and improving the operating stability of the suspension system 200; when the pressure in the oil pipe 30 suddenly decreases, the gas in the airbag 82 expands to release the hydraulic oil in the receiving chamber 83 into the oil pipe 30, ensuring that there is sufficient oil pressure in the oil pipe 30 to improve the response speed of the suspension system 200 disclosed in the present invention.

[0071] In one embodiment, the accumulator 80 and the joint 31 may be connected by threads to ensure the connection reliability between the accumulator 80 and the oil pipe 30 .

[0072] In one embodiment, a sealing gasket or a sealing ring is provided between the interface 84 of the accumulator 80 and the mounting hole 34 to seal the mounting hole 34 and prevent the hydraulic oil in the oil pipe 30 from leaking from the mounting hole 34 .

[0073] Please refer to FIG. 6 , which is a schematic diagram of the cross-sectional structure of an oil pipe 30 provided in another embodiment of the present disclosure.

[0074] As shown in FIG6 , in one embodiment, two accumulators 80 are provided, one on each side of the pressure sensor 50 along the length of the oil pipe 30. As will be appreciated, providing the accumulators 80 on both sides of the pressure sensor 50 along the length of the oil pipe 30 protects the pressure sensor 50 and effectively prevents damage to the pressure sensor 50 caused by hydraulic shock within the oil pipe 30.

[0075] Referring back to FIG. 4 , in one embodiment, the disclosed suspension system 200 includes two fixing members (not shown), each joint 31 including a fixing block 311, i.e., there are two fixing blocks 311. Each fixing block 311 is provided with a through hole 312 extending axially along the joint 31. One end of one of the fixing members is fixedly connected to the oil pump 20, and the other end passes through the through hole 312 and connects the joint 31 to the oil pump 20. The other fixing member has one end fixedly connected to the shock absorber 40, and the other end passes through the through hole 312 and connects the joint 31 to the shock absorber 40. In a specific embodiment, the fixing member can be configured as a screw. It will be understood that in this embodiment, the fixing member and the fixing block 311 cooperate to securely fix the joint 31 to the oil pump 20 or shock absorber 40, preventing the oil pipe 30 from falling off the oil pump 20 or shock absorber 40 due to pressure fluctuations within the oil pipe 30.

[0076] It should be understood that the terms "first," "second," etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance or quantity. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the embodiments of the present disclosure, "plurality" means two or more, unless otherwise specifically defined.

[0077] Throughout this specification, reference to terms such as "some embodiments," "illustrative embodiments," and "examples" indicates that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, illustrative uses of these terms do not necessarily refer to the same embodiment. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments.

[0078] It should be understood that the application of the present disclosure is not limited to the above examples. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the scope of protection of the appended claims of the present disclosure. Those skilled in the art will understand that implementing all or part of the processes of the above embodiments and making equivalent changes in accordance with the claims of the present disclosure still fall within the scope of the present disclosure.

Claims

1. A suspension system (200), characterized in that: The invention comprises a controller (10), an oil pump (20), and a shock absorber (40); the controller (10) is electrically connected to the oil pump (20); the oil pump (20) and the shock absorber (40) are connected via an oil pipe (30); the controller (10) adjusts the oil pressure in the shock absorber (40) via the oil pump (20) to drive the shock absorber (40) to expand and contract; The oil pipe (30) is provided with a pressure sensor (50), the pressure sensor (50) is communicatively connected with the controller (10), and the pressure sensor (50) is used to detect the oil pressure in the oil pipe (30).

2. The suspension system (200) according to claim 1, characterized in that: The shock absorber (40) comprises a hydraulic cylinder (41) and a piston rod (42), one end of the piston rod (42) extending into the hydraulic cylinder (41) to separate the hydraulic cylinder (41) into a first inner chamber (41a) and a second inner chamber (41b).

3. The suspension system (200) according to claim 1 or 2, characterized in that: The oil pipe (30) comprises a joint (31) connected to the oil pump (20) or the shock absorber (40), the joint (31) being provided with a through hole (33) penetrating one side thereof in its radial direction, and the pressure sensor (50) being embedded in the through hole (33).

4. The suspension system (200) according to claim 3, characterized in that: The pressure sensor (50) comprises a detection section (51) and a fixing section (52); the detection section (51) is closer to the inside of the joint (31) than the fixing section (52); and the fixing section (52) is provided with threads.

5. The suspension system (200) according to claim 3, characterized in that: A sealing member (60) is also provided between the pressure sensor (50) and the through hole (33), and the sealing member (60) is used to prevent the hydraulic oil in the oil pipe (30) from leaking from the through hole (33).

6. The suspension system (200) according to any one of claims 1 to 5, characterized in that: The oil pipe (30) is provided with a temperature sensor (70), the temperature sensor (70) is communicatively connected with the controller (10), and the temperature sensor (70) is used to detect the oil temperature in the oil pipe (30).

7. The suspension system (200) according to claim 6, characterized in that: The pressure sensor (50) and the temperature sensor (70) are an integrated structure.

8. The suspension system (200) according to any one of claims 1 to 5, characterized in that: The suspension system (200) comprises an accumulator (80), which is connected to the oil pipe (30). The accumulator (80) is used to absorb the hydraulic oil in the oil pipe (30) or to release the hydraulic oil into the oil pipe (30) to adjust the pressure fluctuation in the oil pipe (30).

9. The suspension system (200) according to claim 8, characterized in that: The accumulator (80) comprises a housing (81) formed with a receiving chamber (83), an air bag (82) received in the receiving chamber (83), and an interface (84) connecting the outside with the receiving chamber (83).

10. The suspension system (200) according to claim 8, characterized in that: The number of the accumulators (80) is two, and along the length direction of the oil pipe (30), the two accumulators (80) are arranged on both sides of the pressure sensor (50).

11. The suspension system (200) according to any one of claims 1 to 5, characterized in that: The oil pipe (30) comprises a flexible section (32), and the flexible section (32) is used to allow the oil pipe (30) to be displaced relative to the oil pump (20) or the shock absorber (40).

12. The suspension system (200) according to claim 11, characterized in that The flexible section (32) and the joint (31) are connected by a press-fitting process.

13. A vehicle, characterized in that: The vehicle comprises a frame, wheels and a suspension system (200) as claimed in any one of claims 1 to 12, wherein the suspension system (200) is connected between the frame and the wheels and is used to adjust the height of the frame.

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