Air suspension system of light motor home
By designing an air suspension system suitable for light RVs, using components such as guide arms, air springs, etc., the body height is dynamically adjusted, solving the problem of insufficient suspension performance of light RVs, and improving driving comfort and fuel economy.
Patent Information
- Application Number
- CN202420302108.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-19
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-02-19
AI Technical Summary
Light vehicle lacks an adaptable air suspension system, resulting in insufficient driving comfort and fuel economy.
A light-duty RV air suspension system is designed, using guide arms, air springs, height sensors, brake air chambers, gas storage tanks and gas distribution valves. By controlling the charging and deflation action of the air spring, the body height is adjusted to optimize the Suspension performance.
It improves driving comfort and fuel economy, and reduces wind resistance and improves the passing of bad roads through dynamic adjustment of body height.
Smart Images
Figure CN222473850U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of air suspensions, in particular to an air suspension system for a light RV. Background Art
[0002] As one of the important devices in the vehicle system, the suspension is used to transmit the force and torque from the road surface to the vehicle body, and to suppress the vibration of the vehicle by converting the mechanical energy in the impact and vibration caused by the unevenness of the road surface into heat energy and other forms of energy. With the continuous improvement of customers' requirements for vehicle riding comfort, the air suspension technology has been continuously innovated and developed. In the early days, air suspension was mostly used in commercial vehicles such as large buses and high-end passenger cars, and there was no unified manufacturing and production standard. For light RVs, some models still do not have suitable air suspension systems. Utility Model Content
[0003] The utility model aims to solve the above problems and provides an air suspension system for a light RV, the technical solutions of which are as follows:
[0004] A light RV air suspension system, wherein guide arms are connected to both sides of a frame, one end of the guide arm is fixedly connected to the frame via a guide arm bracket, an air spring is connected between the other end of the guide arm and the frame, and the middle part of the guide arm is fixedly connected to the axle; a height sensor is arranged between the frame and the guide arm; a brake air chamber is arranged on the frame, and the brake air chamber is connected to the air circuit of the air spring; a thrust rod is arranged laterally on the inner side of the frame, one end of the thrust rod is fixedly connected to the frame via a thrust rod bracket, and the other end is fixedly connected to the upper part of the axle; a control unit is arranged on the frame.
[0005] On the basis of the above scheme, shock absorbers are symmetrically arranged inside both sides of the frame, the upper ends of the shock absorbers are fixedly connected to the frame, and the lower ends are fixedly connected to the lower part of the axle.
[0006] Preferably, the height sensor comprises a mounting frame, a horizontal swing rod and a longitudinal rod which are connected in sequence.
[0007] On the basis of the above solution, the bottom of the longitudinal rod is fixedly connected to the inner side of the guide arm and is located above the connection portion between the guide arm and the axle.
[0008] Preferably, the guide arm is a Z-shaped variable-section rod, the upper cross bar of the guide arm is connected to the guide arm bracket and the axle, the air spring is arranged between the lower cross bar of the guide arm and the frame, and the air spring is closer to the axle than the guide arm bracket.
[0009] Preferably, an air storage tank is also provided on the vehicle frame, and the air storage tank is respectively connected to the brake air chamber and the air spring air circuit.
[0010] Preferably, it also includes a gas distribution valve for controlling the air intake of each air spring, and the brake air chamber is electrically connected to the gas distribution valve.
[0011] Preferably, the gas tank is fixedly connected to the inside of the vehicle frame via a bracket, and the bracket supports the gas tank from the bottom.
[0012] On the basis of the above solution, the control unit is fixedly connected to the bracket, and the control unit is tilted.
[0013] Preferably, the gas distribution valve is fixedly connected to the bracket.
[0014] The beneficial effects of the utility model are as follows: an adaptive air suspension system is designed specifically for the frame and axle structure of the light RV. Compared with the original vehicle leaf spring suspension, this solution can not only improve driving comfort, but also reduce wind resistance by lowering the vehicle body height under high-speed conditions, thereby having good fuel economy, and improve the passability on bad roads by increasing the vehicle body height; the air spring is arranged close to the axle to bear the main load; the brake air chamber and the air tank are used to supply air to the air spring to meet the needs of different air supply scenarios and air supply speed requirements. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 : Schematic diagram of the structure of the utility model;
[0016] Figure 2 : Schematic diagram of the bottom structure of the utility model. DETAILED DESCRIPTION
[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments:
[0018] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0019] In the description of the present utility model, it should be understood that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, 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 utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.
[0020] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0021] like Figure 1 and Figure 2As shown, a light RV air suspension system, the frame 11 is connected to the guide arm 21 on both sides, one end of the guide arm 21 is fixedly connected to the frame 11 through the guide arm bracket, the other end of the guide arm 21 is connected to the frame 11 with an air spring 22, and the middle of the guide arm 21 is fixedly connected to the axle 12; specifically, the guide arm 21 is a Z-shaped variable cross-section rod, the upper cross bar of the guide arm 21 is connected to the guide arm bracket and the axle 12, the connection position of the guide arm 21 and the axle 12 is close to the bending of the upper cross bar, the air spring 22 is arranged between the lower cross bar of the guide arm 21 and the frame 11, and the air spring 22 is closer to the axle 12 than the guide arm bracket to bear the main load. A height sensor is arranged between the frame 11 and the guide arm 21; the height sensor includes a mounting frame 42, a horizontal swing bar 43 and a longitudinal bar 44 connected in sequence, the bottom of the longitudinal bar 44 is fixedly connected to the guide arm 21, and is located above the connection position between the guide arm 21 and the axle 12. When the relative height between the axle 12 and the frame 11 changes, the longitudinal rod 44 moves in the vertical direction relative to the horizontal swing rod 43, driving the horizontal swing rod 43 to change its angle, and then the relative distance between the axle 12 and the frame 11 is calculated by detecting the angle of the horizontal swing rod 43, so as to adjust the inflation and deflation of the air spring 22. A brake air chamber 23 is arranged on the frame 11, and the brake air chamber 23 is connected to the air circuit of the air spring 22 to control the inflation and deflation of the air spring 22. In the structural form without the brake air chamber 23, an electric air pump can be used to replace the brake air chamber 23. A thrust rod 31 is arranged laterally on the inner side of the frame 11, and one end of the thrust rod 31 is fixedly connected to the frame 11 through a thrust rod bracket 32, and the other end is fixedly connected to the upper part of the axle 12, so as to transmit and bear the relative lateral force between the frame 11 and the axle 12. Shock absorbers 33 are symmetrically arranged inside both sides of the vehicle frame 11 . The upper ends of the shock absorbers 33 are fixedly connected to the vehicle frame 11 through shock absorber brackets, and the lower ends of the shock absorbers 33 are fixedly connected to the lower part of the axle 12 .
[0022] A control unit 26 is provided on the vehicle frame 11, and the control unit 26 is connected to each component in communication. An air tank 24 is also provided on the vehicle frame 11, and the air tank 24 is connected to the brake air chamber 23 and the air spring 22 respectively. The brake air chamber 23 or the air tank 24 is selected to supply air to the air spring 22 according to the inflation requirement. A gas distribution valve for controlling the air intake of each air spring 22 is also included, and the brake air chamber 23 is electrically connected to the gas distribution valve.
[0023] Preferably, the control unit 26 is fixedly connected to the inside of the frame 11 through a bracket 28, and the control unit 26 is tilted, which changes the previous installation method of the control unit 26 being set on the side of the frame 11. The bracket 28 is used to block the impact of the bottom mud, gravel and other debris on the control unit 26, and at the same time, the tilted setting method facilitates the timely discharge of liquids such as sewage and rainwater splashed on the surface of the control unit 26 to avoid damage to the control unit 26 caused by the accumulated water. The gas tank 24 is fixedly connected to the inside of the frame 11 through a bracket 27, and the bracket 27 supports the gas tank 24 from the bottom, and at the same time, the bracket 27 blocks the impact of the bottom mud, gravel and other debris on the gas tank 24 for the brake air chamber 23. The gas distribution valve 25 is set on the bracket 27 or inside the frame 11, and is located between the upper and lower crossbeams, and the crossbeams are used to protect the gas distribution valve 25.
[0024] The present invention is described above by way of examples, but the present invention is not limited to the above specific embodiments, and any changes or modifications based on the present invention belong to the scope of protection required by the present invention.
Claims
1. A light RV air suspension system, characterized in that: Guide arms (21) are connected to both sides of the vehicle frame (11); one end of the guide arm (21) is fixedly connected to the vehicle frame (11) via a guide arm bracket; an air spring (22) is connected between the other end of the guide arm (21) and the vehicle frame (11); and the middle of the guide arm (21) is fixedly connected to the vehicle axle (12); a height sensor is arranged between the vehicle frame (11) and the guide arm (21); a brake air chamber (23) is arranged on the vehicle frame (11); the brake air chamber (23) is connected to the air path of the air spring (22); a thrust rod (31) is arranged laterally on the inner side of the vehicle frame (11); one end of the thrust rod (31) is fixedly connected to the vehicle frame (11) via a thrust rod bracket (32), and the other end is fixedly connected to the upper part of the vehicle axle (12); and a control unit (26) is arranged on the vehicle frame (11).
2. The air suspension system for a light RV according to claim 1, characterized in that: Shock absorbers (33) are symmetrically arranged inside the two sides of the vehicle frame (11); the upper ends of the shock absorbers (33) are fixedly connected to the vehicle frame (11), and the lower ends are fixedly connected to the lower part of the vehicle axle (12).
3. The light RV air suspension system according to claim 1, characterized in that: The height sensor comprises a mounting frame (42), a horizontal swing rod (43) and a longitudinal rod (44) which are connected in sequence.
4. The air suspension system for a light RV according to claim 3, characterized in that: The bottom of the longitudinal rod (44) is fixedly connected to the inner side of the guide arm (21) and is located above the connection portion between the guide arm (21) and the axle (12).
5. The light RV air suspension system according to claim 1, characterized in that: The guide arm (21) is a Z-shaped variable cross-section rod; an upper cross bar of the guide arm (21) is connected to a guide arm bracket and an axle (12); an air spring (22) is arranged between a lower cross bar of the guide arm (21) and the vehicle frame (11); and the air spring (22) is closer to the axle (12) than the guide arm bracket.
6. The light RV air suspension system according to claim 1, characterized in that: An air storage tank (24) is also provided on the vehicle frame (11), and the air storage tank (24) is respectively connected to the brake air chamber (23) and the air spring (22) air circuit.
7. The air suspension system for a light RV according to claim 1, characterized in that: It also includes a gas distribution valve (25) for controlling the air intake amount of each air spring (22), and the brake air chamber (23) is electrically connected to the gas distribution valve.
8. The air suspension system for a light RV according to claim 6, characterized in that: The gas storage tank (24) is fixedly connected to the inside of the vehicle frame (11) via a bracket (27), and the bracket (27) supports the gas storage tank (24) from the bottom.
9. The air suspension system for a light RV according to claim 8, characterized in that: The control unit (26) is fixedly connected to the bracket (27), and the control unit (26) is arranged at an angle.
10. The air suspension system for a light RV according to claim 7, characterized in that: The gas distribution valve (25) is fixedly connected to the bracket (27).