Automobile body height adjusting system and automobile

Abstract

The embodiment of the utility model relates to the technical field of automobile parts, and discloses an automobile body height adjusting system and an automobile. The vehicle body height adjusting system comprises an air spring adjusting assembly and a hydraulic adjusting assembly, and the air spring adjusting assembly comprises a plurality of air spring devices installed between a wheel suspension and a vehicle body support; the hydraulic adjusting assembly comprises hydraulic devices installed at the acting ends of the air spring devices, and the direction of first acting force applied to the vehicle body support by the air spring devices and the direction of second acting force applied to the vehicle body support by the hydraulic devices are located on the same straight line. According to the invention, no matter whether the automobile is in a static state or a driving state, rapid and accurate control of the height adjustment of the automobile body can be realized.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of automobile parts, and in particular to a vehicle body height adjustment system and an automobile. Background Art

[0002] Cars are one of the important means of transportation in today's society. With the development of social economy and the improvement of people's living standards, people have higher and higher requirements for the comfort of travel tools.

[0003] Most of the existing automobile body height adjustment systems are implemented using air spring devices, and their control principle is: first, the controller uses the output signals of the body height sensor modules of the front and rear axles of the automobile to determine the body height, and then uses an air compressor to produce compressed air, and through the control of the corresponding solenoid valve, distributes the compressed air to the air spring device to change the body height so that the body always remains at the same level.

[0004] Since air springs have the characteristics of slow adjustment speed and large adjustment stroke, they are generally suitable for adjusting the height of a stationary vehicle, that is, when the vehicle is parked on an uneven surface, the air spring can be used to adjust the height of the vehicle to keep the vehicle balanced. However, when the vehicle is in motion, the air spring cannot respond to the bumps of the vehicle and make timely adjustments and feedback, so that the height adjustment of the vehicle cannot be achieved quickly and accurately by relying on the air spring.

[0005] It should be noted that the above contents are only used to assist in understanding the technical solution of the present utility model, and do not constitute an admission that the above contents are prior art. Utility Model Content

[0006] In view of this, the embodiments of the present application provide a vehicle body height adjustment system and a vehicle, so that rapid and accurate control of the vehicle body height adjustment can be achieved regardless of whether the vehicle is in a stationary state or in a driving state.

[0007] In order to achieve the above-mentioned purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0008] In a first aspect, an embodiment of the present application provides a vehicle height adjustment system, which is applied to a vehicle;

[0009] The vehicle height adjustment system comprises:

[0010] An air spring adjustment assembly, the air spring adjustment assembly comprising a plurality of air spring devices mounted between the wheel suspension and the vehicle body support;

[0011] A hydraulic adjustment assembly, the hydraulic adjustment assembly includes a hydraulic device installed at the action end of each of the air spring devices, and the direction of a first force applied by the air spring device to the vehicle body bracket is on the same straight line as the direction of a second force applied by the hydraulic device to the vehicle body bracket.

[0012] The vehicle body height adjustment system provided in the embodiment of the present application has the characteristics of faster adjustment speed and smaller adjustment stroke in the hydraulic device compared to the air spring device which has the characteristics of slower adjustment speed and larger adjustment stroke. The vehicle body height adjustment system is formed by combining the air spring device with the hydraulic device, and the first force direction applied by the air spring device to the vehicle body bracket is on the same straight line as the second force direction applied by the hydraulic device to the vehicle body bracket, so that the advantages of the air spring device and the hydraulic device can complement each other, so that the vehicle body height adjustment can be quickly and accurately controlled regardless of whether the vehicle is in a stationary state or in a driving state.

[0013] In a possible implementation of the present application, the air spring adjustment assembly includes four air spring devices, and each of the air spring devices is respectively installed on the wheel suspension corresponding to each wheel.

[0014] In a possible implementation of the present application, the automobile includes a vehicle height sensor module and a vehicle state identification module, the vehicle height sensor module is electrically connected to the air spring adjustment component and the hydraulic adjustment component, and the vehicle state identification module is electrically connected to the air spring adjustment component and the hydraulic adjustment component.

[0015] In a possible implementation of the present application,

[0016] When the vehicle state recognition module detects that the vehicle is in a stationary state, switching to using the air spring adjustment component to adjust the height of the vehicle body bracket;

[0017] When the vehicle state recognition module detects that the vehicle is in a driving state, it switches to using the hydraulic adjustment component to adjust the height of the vehicle body bracket.

[0018] In a possible implementation of the present application, the air spring adjustment assembly also includes an air tank and a plurality of gas pipelines, and each of the air spring devices is connected to the air tank via the gas pipeline; each section of the air spring device is equipped with an air pressure regulating valve, and the air pressure regulating valve is electrically connected to the vehicle height sensor module.

[0019] In a possible implementation of the present application, the air spring device includes an air spring base and a first drive rod, the first drive rod is relatively slidably connected to the air spring base; one end of the first drive rod away from the air spring base is connected to the hydraulic device.

[0020] In a possible implementation of the present application, the hydraulic adjustment component also includes an oil storage tank and an oil pump, and the oil pump is used to transfer oil between the oil storage tank and the hydraulic device to drive the hydraulic device to apply a second force to the vehicle body bracket; the oil pump is electrically connected to the vehicle body height sensor module.

[0021] In a possible implementation of the present application, the hydraulic device includes a hydraulic base and a second drive rod, the second drive rod is relatively slidably connected to the hydraulic base; one end of the second drive rod away from the hydraulic base is connected to the vehicle body support.

[0022] In a possible implementation of the present application, a sliding distance of the second driving rod relative to the hydraulic base is 30 mm to 50 mm.

[0023] In a second aspect, an embodiment of the present application provides a car, comprising any of the above-mentioned vehicle height adjustment systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of a vehicle height adjustment system provided in an embodiment of the present application;

[0025] Figure 2 A first structural schematic diagram of an air spring device of a vehicle height adjustment system provided in an embodiment of the present application;

[0026] Figure 3 The second structural schematic diagram of an air spring device of the vehicle body height adjustment system provided in an embodiment of the present application.

[0027] Reference numerals:

[0028] 10. Air spring adjustment assembly; 11. Air spring device; 12. Air storage tank; 13. Gas pipeline; 20. Hydraulic adjustment assembly; 21. Hydraulic device; 22. Oil storage tank; 23. Oil pump. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0030] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more.

[0031] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to the changes in the orientation of the components in the drawings.

[0032] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0033] In the embodiments of the present application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0034] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0035] The embodiment of the present application provides a vehicle height adjustment system, which is applied to a car (not shown in the drawings);

[0036] Reference Figure 1-3 , the vehicle height adjustment system comprises:

[0037] An air spring adjustment assembly 10, the air spring adjustment assembly 10 comprises a plurality of air spring devices 11 installed between a wheel suspension (not shown in the drawings) and a vehicle body bracket (not shown in the drawings);

[0038] The hydraulic adjustment assembly 20 includes a hydraulic device 21 installed at the action end of each air spring device 11, and the first force direction applied by the air spring device 11 to the vehicle body bracket is on the same straight line as the second force direction applied by the hydraulic device 21 to the vehicle body bracket.

[0039] The vehicle body height adjustment system provided in the embodiment of the present application has the characteristics of faster adjustment speed and smaller adjustment stroke compared to the air spring device 11 which has the characteristics of slower adjustment speed and larger adjustment stroke. The vehicle body height adjustment system is formed by combining the air spring device 11 with the hydraulic device 21, and the first force direction applied by the air spring device 11 to the vehicle body bracket is on the same straight line as the second force direction applied by the hydraulic device 21 to the vehicle body bracket, so that the advantages and disadvantages of the air spring device 11 and the hydraulic device 21 can compensate for each other, so that the vehicle body height adjustment can be quickly and accurately controlled regardless of whether the vehicle is stationary or in motion.

[0040] For example, for some air spring adjustment assemblies 10, the air spring adjustment assemblies 10 include four air spring devices 11, and each air spring device 11 is installed on the wheel suspension corresponding to each wheel. In this arrangement, since a general family car includes four wheels, the air spring devices 11 are respectively installed on the wheel suspensions corresponding to the four wheels, and the height of the car is adjusted at four points to ensure that the car body is in a horizontal balance state after adjustment.

[0041] On this basis, the automobile includes a vehicle height sensor module and a vehicle state recognition module, the vehicle height sensor module is electrically connected to the air spring adjustment component 10 and the hydraulic adjustment component 20, and the vehicle state recognition module is electrically connected to the air spring adjustment component 10 and the hydraulic adjustment component 20. When the vehicle state recognition module detects that the automobile is in a stationary state, it switches to using the air spring adjustment component 10 to adjust the height of the vehicle body bracket; when the vehicle state recognition module detects that the automobile is in a driving state, it switches to using the hydraulic adjustment component 20 to adjust the height of the vehicle body bracket.

[0042] First, the vehicle state recognition module is used to detect whether the vehicle is in a stationary state or a driving state, so as to determine whether the air spring adjustment component 10 or the hydraulic adjustment component 20 should be used to adjust the vehicle height;

[0043] It can be understood that since the air spring device 11 has the characteristics of slow adjustment speed and large adjustment stroke, when the car is at rest, such as when the vehicle is parked on uneven ground, the height of the vehicle body changes greatly and the frequency of change is slow. At this time, it is appropriate to use the air spring device 11 to adjust the height of the vehicle body.

[0044] It is understandable that, since the hydraulic device 21 has the characteristics of fast adjustment speed and small adjustment stroke, when the car is in driving state, for example, the pitch and roll of the vehicle body change when the vehicle is driving on a bumpy road or a curve, the height of the vehicle body changes with a small amplitude and a fast frequency. At this time, it is appropriate to use the hydraulic device 21 to adjust the height of the vehicle body to offset the wheel impact force caused by the uneven road surface and improve the smoothness and stability of the vehicle during driving. The height adjustment through hydraulic control improves the high-efficiency and high-precision control of the vehicle body during dynamic driving, can realize active control in the dynamic process, and improve the smoothness and stability of the vehicle on bumpy and undulating roads in real time, and improve the driving quality of the whole vehicle.

[0045] Subsequently, the vehicle height sensor module is used to detect the current vehicle height, and the height is adjusted by using the air spring devices 11 in the air spring adjustment assembly 10 or the hydraulic devices 21 in the hydraulic adjustment assembly 20 according to the current vehicle height data to ensure that the vehicle body is in a horizontally balanced state.

[0046] Among them, the vehicle height sensor module usually adopts a photoelectric sensor; the sensor body is installed at the end of the vehicle body, and the up and down movement of the suspension is converted into the rotational movement of the disk slot through the control link, and the vehicle height is detected by the change of the output of the photointerrupter, and it is converted into an electrical signal and input into the control device. Since the vehicle height sensor module belongs to the existing technology, this application will not describe its structure in detail.

[0047] It should be noted that, in the embodiments of the present application, the specific form of the air spring adjustment assembly 10 is not limited, and can be configured according to the site conditions. Figure 1 The air spring adjustment assembly 10 also includes an air tank 12 and a plurality of gas pipelines 13. Each air spring device 11 is connected to the air tank 12 via a gas pipeline 13. Each section of the air spring device 11 is equipped with an air pressure regulating valve (not shown in the drawings), and the air pressure regulating valve is electrically connected to the vehicle height sensor module. In this way, the air spring adjustment assembly 10 is formed by combining the air tank 12, the gas pipeline 13 and the air spring device 11, etc., and has a simple structure and strong practicality. It can be understood that in addition to the above structural components, the air spring adjustment assembly 10 may also include other structural components, such as an air pressure control valve, etc., which will not be described one by one in this application.

[0048] Since the air spring device 11 belongs to the prior art, the present application will not describe it in detail; in a certain embodiment, the air spring device 11 includes an air spring base (not shown in the drawings) and a first drive rod (not shown in the drawings), and the first drive rod is relatively slidably connected to the air spring base; one end of the first drive rod away from the air spring base is connected to the hydraulic device 21. In this way, the air spring base and the first drive rod are combined to form the air spring device 11, which has a simple structure and strong practicality.

[0049] It should be noted that in the embodiments of the present application, the specific form of the hydraulic adjustment assembly 20 is not limited, and can be configured according to the site conditions. Figure 2-3 The hydraulic adjustment component 20 also includes an oil tank 22 and an oil pump 23. The oil pump 23 is used to transfer oil between the oil tank 22 and the hydraulic device 21 to drive the hydraulic device 21 to apply a second force to the vehicle body support; the oil pump 23 is electrically connected to the vehicle body height sensor module. In this way, the hydraulic adjustment component 20 is formed by combining the oil tank 22, the oil pump 23 and the hydraulic device 21, etc., and has a simple structure and strong practicality. It can be understood that in addition to the above structural components, the hydraulic adjustment component 20 may also include other structural components, such as oil pipelines, etc., which will not be described one by one in this application.

[0050] Since the hydraulic device 21 belongs to the prior art, this application will not elaborate on it in detail; in a certain embodiment, the hydraulic device 21 includes a hydraulic base (not shown in the drawings) and a second drive rod (not shown in the drawings), and the second drive rod is connected to the hydraulic base in a relatively sliding manner; the end of the second drive rod away from the hydraulic base is connected to the vehicle body support. In this way, the hydraulic base and the second drive rod are combined to form the hydraulic device 21; in actual operation, the hydraulic base is fixedly connected to the action end of the air spring device 11, and the second drive rod is fixedly connected to the vehicle body support, so as to ensure that the first force direction applied by the air spring device 11 to the vehicle body support is on the same straight line as the second force direction applied by the hydraulic device 21 to the vehicle body support, thereby ensuring the smooth implementation of the technical solution of this application.

[0051] Furthermore, the sliding distance of the second drive rod relative to the hydraulic base is 30mm to 50mm. With such a configuration, the sliding distance of the second drive rod relative to the hydraulic base, i.e., the height adjustment range of the hydraulic device 21 to the vehicle body support, is set to 30mm to 50mm, taking into account that the general road bump amplitude is 20mm to 30mm, so the sliding distance of the second drive rod relative to the hydraulic base is sufficient to cope with most road conditions. It should be noted that after understanding the technical solution of the present application, those skilled in the art can think of other intervals without creatively paying attention, such as 60mm to 100mm, etc., which should also fall within the protection scope of the present application.

[0052] In a second aspect, an embodiment of the present application provides a vehicle, the vehicle comprising the vehicle height adjustment system of the above embodiment. The above embodiment may be referred to for the specific structure of the vehicle height adjustment system. Since the vehicle adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0053] It should be noted that the automobile in this application may refer to a large automobile, a small automobile, a special-purpose automobile, etc. For example, according to the vehicle type, the automobile in this application may be a sedan, an off-road vehicle, a multi-purpose vehicle (MPV) or other vehicle types. Generally, an automobile is provided with wheels, a power source, and a transmission system provided between the wheels and the power source. The transmission system can transmit the power provided by the power source to the wheels, so that the wheels rotate, thereby driving the vehicle to travel.

[0054] It should be noted that in the embodiments of the present application, the type of the power source of the automobile is not limited. For example, for a fuel-powered automobile, the power source may refer to a fuel engine such as a gasoline engine or a diesel engine; for an electric automobile, the power source may refer to an electric motor; for a hybrid automobile, the power source may refer to an engine or an electric motor; for an automobile powered by other means, the power source may refer to a device that generates power.

[0055] The serial numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A vehicle height adjustment system, applied to a vehicle; characterized in that: The vehicle height adjustment system comprises: An air spring adjustment assembly, the air spring adjustment assembly comprising a plurality of air spring devices mounted between the wheel suspension and the vehicle body support; A hydraulic adjustment assembly, the hydraulic adjustment assembly includes a hydraulic device installed at the action end of each of the air spring devices, and the direction of a first force applied by the air spring device to the vehicle body bracket is on the same straight line as the direction of a second force applied by the hydraulic device to the vehicle body bracket.

2. The vehicle height adjustment system according to claim 1, characterized in that: The air spring adjustment assembly includes four air spring devices, and each of the air spring devices is respectively installed on the wheel suspension corresponding to each wheel.

3. The vehicle height adjustment system according to claim 1, characterized in that: The automobile includes a vehicle height sensor module and a vehicle state recognition module, the vehicle height sensor module is electrically connected to the air spring adjustment component and the hydraulic adjustment component, and the vehicle state recognition module is electrically connected to the air spring adjustment component and the hydraulic adjustment component.

4. The vehicle height adjustment system according to claim 3, characterized in that: When the vehicle state recognition module detects that the vehicle is in a stationary state, switching to using the air spring adjustment component to adjust the height of the vehicle body bracket; When the vehicle state recognition module detects that the vehicle is in a driving state, it switches to using the hydraulic adjustment component to adjust the height of the vehicle body bracket.

5. The vehicle height adjustment system according to claim 1, characterized in that: The air spring adjustment assembly also includes an air tank and a plurality of gas pipelines, and each of the air spring devices is connected to the air tank via the gas pipelines; each section of the air spring device is equipped with an air pressure regulating valve, and the air pressure regulating valve is electrically connected to the vehicle height sensor module.

6. The vehicle height adjustment system according to claim 5, characterized in that: The air spring device comprises an air spring base and a first driving rod, wherein the first driving rod is connected to the air spring base in a relatively sliding manner; an end of the first driving rod away from the air spring base is connected to the hydraulic device.

7. The vehicle height adjustment system according to claim 1, characterized in that: The hydraulic adjustment component also includes an oil storage tank and an oil pump. The oil pump is used to transfer oil between the oil storage tank and the hydraulic device to drive the hydraulic device to apply a second force to the vehicle body bracket. The oil pump is electrically connected to the vehicle body height sensor module.

8. The vehicle height adjustment system according to claim 7, characterized in that: The hydraulic device comprises a hydraulic base and a second driving rod, wherein the second driving rod is slidably connected to the hydraulic base; and one end of the second driving rod away from the hydraulic base is connected to the vehicle body bracket.

9. The vehicle height adjustment system according to claim 8, characterized in that: The sliding distance of the second driving rod relative to the hydraulic base is 30 mm to 50 mm.

10. An automobile, characterized in that: The vehicle height adjustment system comprises the vehicle height adjustment system according to any one of claims 1 to 9.

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