Air spring with height detection function

Abstract

The utility model discloses an air spring with a height detection function, which comprises an air spring body, and a sensor assembly is arranged at the lower end of the air spring. The sensor assembly comprises a through hole formed in the lower end of the air spring body, a sealing sleeve is fixedly connected into the through hole, a tempered glass plate is arranged in the sealing sleeve, an internal thread is formed in the lower end of the through hole, and the lower end of the through hole is in threaded connection with a connecting sleeve. According to the air spring, the photoelectric sensor is arranged at the bottom of the air spring body in the mode that the sensor assembly is arranged and matched with the sealing sleeve and the tempered glass, the vehicle height change is detected according to the shape change of the air spring, the layout is reasonable, the product structure is optimized, the anti-interference performance is improved, and the debugging and calibration difficulty is reduced; the production and maintenance cost is reduced, and meanwhile, a sensor laying platform does not need to be additionally arranged on the automobile.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to an air spring with height detection function. Background Technology

[0002] Air springs are made by filling a sealed container with compressed air, utilizing the compressibility of gas to achieve their elastic effect. Air springs have ideal non-linear elastic characteristics. With the addition of a height adjustment device, the vehicle height does not change with the increase or decrease of load. The spring stiffness can be designed to be lower, resulting in good ride comfort. However, air spring suspension structures are complex and have high manufacturing costs.

[0003] In existing technologies, the stress on the suspension of a car varies depending on its weight, the number of passengers, and the cargo load during actual use. This necessitates the use of a height detection unit in conjunction with the vehicle's infotainment system to adjust the air springs. However, the placement of the detection sensors differs across car models, requiring additional calibration and adjustment to work with the air springs, significantly increasing vehicle production and maintenance costs. To address these issues, we propose an air spring with height detection functionality. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing an air spring with height detection function.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An air spring with height detection function includes an air spring body, and a sensor assembly is provided at the lower end of the air spring;

[0007] The sensor assembly includes a through hole at the lower end of the air spring body, a sealing sleeve fixedly connected inside the through hole, a tempered glass plate disposed inside the sealing sleeve, an internal thread at the lower end of the through hole, a connecting sleeve threaded to the lower end of the through hole, a photoelectric sensor fixedly connected inside the connecting sleeve, and a support sleeve fixedly connected inside the connecting sleeve, the support sleeve abutting against the tempered glass plate, and a wiring sleeve disposed on the lower side wall of the connecting sleeve.

[0008] Preferably, the air spring body is provided with a plurality of crossbars, an extension rod is fixedly connected to the crossbar, a reflector is fixedly connected to the lower end of the extension rod, a sleeve is fixedly connected to the extension rod, and a connecting pipe is slidably connected to the lower end of the sleeve, and the lower end of the connecting pipe is fixedly connected to the sealing sleeve.

[0009] Preferably, the air spring body includes an upper cover plate, a rubber air bladder, a waist ring, and a bottom plate, and the crossbar is fixedly connected to the upper cover plate and the waist ring respectively.

[0010] Preferably, the through hole is located at the bottom plate, the lower surface of the bottom plate has a horizontal groove, and the wiring sleeve is located in the horizontal groove.

[0011] Preferably, the support sleeve is made of a rigid material, and the lower end of the support sleeve passes through the connecting sleeve.

[0012] Preferably, the connector sleeve is made of rubber.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. This utility model, by setting up a sensor assembly, and by using a sealing sleeve and tempered glass, places the photoelectric sensor at the bottom of the air spring body, and detects changes in vehicle height based on changes in the shape of the air spring. This not only optimizes the product structure with a reasonable layout, but also improves anti-interference performance, reduces debugging and calibration difficulty, and reduces production and maintenance costs. At the same time, it eliminates the need to set up an additional sensor deployment platform on the car.

[0015] 2. This utility model improves the sensing accuracy of the viewpoint sensor by setting a crossbar in conjunction with an extension rod and a reflector. Furthermore, the sleeve and connecting pipe reduce the influence of the air spring's internal filling material on the detection results. On the other hand, setting multiple crossbars allows for mutual reference and comparison, further improving the detection accuracy and enabling the detection of the air spring's own elastic deformation state, thus promptly identifying any faults in the air spring. Attached Figure Description

[0016] Figure 1 This is a cross-sectional structural diagram of an air spring with height detection function proposed in this utility model;

[0017] Figure 2 for Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0018] Figure 3 for Figure 1 A magnified structural diagram at point B in the middle.

[0019] In the diagram: 1. Air spring body; 101. Top cover plate; 102. Rubber air bladder; 103. Waist ring; 104. Base plate; 2. Sealing sleeve; 3. Tempered glass plate; 4. Connecting sleeve; 5. Photoelectric sensor; 6. Support sleeve; 7. Wiring sleeve; 8. Crossbar; 9. Extension rod; 10. Reflector; 11. Sleeve; 12. Connecting pipe; 13. Horizontal groove. Detailed Implementation

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Reference Figure 1-3 An air spring with height detection function includes...

[0022] In this utility model, an air spring with height detection function includes an air spring body. A sensor assembly is provided at the lower end of the air spring. The height detection function is used to detect the relative displacement of the lower suspension arm or shock absorber bracket in the vertical direction of the car suspension, thereby achieving the purpose of car height detection. This is to adjust the air pressure in the air spring in conjunction with the air spring control device to ensure that the car is kept in a near-level state when the car body is in different load conditions and when the load is uneven, so as to improve the cushioning and shock absorption effect of the air spring when driving on bumpy roads.

[0023] The sensor assembly includes a through hole at the lower end of the air spring body, a sealing sleeve fixedly connected inside the through hole, a tempered glass plate disposed inside the sealing sleeve, an internal thread at the lower end of the through hole, a connecting sleeve threaded to the lower end of the through hole, a photoelectric sensor fixedly connected inside the connecting sleeve, and a support sleeve fixedly connected inside the connecting sleeve, the support sleeve abutting against the tempered glass plate, and a wiring sleeve disposed on the lower side wall of the connecting sleeve;

[0024] In this design, the sealing sleeve is used to ensure the air spring body is sealed, while the tempered glass plate ensures that the photoelectric sensor can detect from the outside of the air spring body and detect the relative vertical displacement of the car suspension by changing the spacing inside the air spring body. This not only makes the reference object more accurate and has strong anti-interference ability, but also allows it to be directly mounted on the air spring body without the need for an additional deployment platform, effectively optimizing the product structure.

[0025] In addition, this design allows users to unscrew the connecting sleeve to replace the photoelectric sensor, making it convenient for users to repair and replace precision sensor equipment. The operation is more convenient. The support sleeve is set to support the tempered glass, reduce the load on the sealing sleeve, and prevent the sealing sleeve from deforming too much when the air pressure inside the air spring is high, which would cause a gap between the tempered glass plate and the sealing sleeve.

[0026] Furthermore, the air spring body is provided with multiple crossbars, an extension rod is fixedly connected to the crossbar, a reflector is fixedly connected to the lower end of the extension rod, a sleeve is fixedly connected to the extension rod, and a connecting pipe is slidably connected to the lower end of the sleeve, and the lower end of the connecting pipe is fixedly connected to the sealing sleeve.

[0027] In this design, since the filling material used in some air spring bodies is an oil-gas mixture, which can affect the photoelectric sensor, a reflector is set up in conjunction with a sleeve and connecting pipe to improve reflectivity while shielding the filling material from affecting the detection results and improving detection accuracy.

[0028] Furthermore, the air spring body includes an upper cover plate, a rubber air bladder, a waist ring, and a bottom plate, and the crossbar is fixedly connected to the upper cover plate and the waist ring respectively;

[0029] In this design, the air spring body is similar to the basic air spring housing in existing technology, but the crossbars are respectively set on the upper cover plate and the waist ring. When the air spring body deforms, different references can be used for comparative measurement, which can not only improve the detection accuracy, but also monitor the condition of the rubber air bladder and detect whether the rubber air bladder is aging in time.

[0030] Furthermore, the through hole is located at the bottom plate, and a horizontal groove is formed on the lower surface of the bottom plate, with the wiring sleeve located within the horizontal groove;

[0031] The transverse slots are designed to facilitate the wiring layout of the sensor components, without requiring the existing frame structure to accommodate the wiring, thus improving the adaptability of this type of air spring.

[0032] Furthermore, the support sleeve is made of rigid material, and the lower end of the support sleeve passes through the connecting sleeve. The lower end of the air spring is often connected to a rigid rotating frame component. This design can effectively improve the support effect of the support sleeve on the tempered glass plate, thereby reducing the stress on the sealing sleeve during the operation of the air spring body and preventing leakage of the sealing sleeve that could lead to failure of the air spring body.

[0033] Furthermore, the connector sleeve is made of rubber. Since the connector sleeve needs to be inserted into the horizontal groove, a flexible connector sleeve is provided. This effectively protects the cable without interfering with the user's installation and removal of the connector sleeve.

[0034] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An air spring with height detection function, comprising an air spring body (1), characterized in that, A sensor assembly is provided at the lower end of the air spring; The sensor assembly includes a through hole at the lower end of the air spring body (1), a sealing sleeve (2) is fixedly connected in the through hole, a tempered glass plate (3) is disposed in the sealing sleeve (2), an internal thread is provided at the lower end of the through hole, a connecting sleeve (4) is threaded to the lower end of the through hole, a photoelectric sensor (5) is fixedly connected in the connecting sleeve (4), and a support sleeve (6) is fixedly connected in the connecting sleeve (4), the support sleeve (6) abuts against the tempered glass plate (3), and a wiring sleeve (7) is provided on the lower side wall of the connecting sleeve (4).

2. An air spring with height detection function according to claim 1, characterized in that, The air spring body (1) is provided with multiple crossbars (8), an extension rod (9) is fixedly connected to the crossbar (8), a reflector plate (10) is fixedly connected to the lower end of the extension rod (9), a sleeve (11) is fixedly connected to the extension rod (9), and a connecting pipe (12) is slidably connected to the lower end of the sleeve (11), and the lower end of the connecting pipe (12) is fixedly connected to the sealing sleeve (2).

3. An air spring with height detection function according to claim 2, characterized in that, The air spring body (1) includes an upper cover plate (101), a rubber air bladder (102), a waist ring (103) and a base plate (104), and the crossbar (8) is fixedly connected to the upper cover plate (101) and the waist ring (103) respectively.

4. An air spring with height detection function according to claim 3, characterized in that, The through hole is located on the bottom plate (104), and a horizontal groove (13) is provided on the lower surface of the bottom plate (104). The wiring sleeve (7) is located in the horizontal groove (13).

5. An air spring with height detection function according to claim 1, characterized in that, The support sleeve (6) is made of rigid material, and the lower end of the support sleeve (6) passes through the connecting sleeve (4).

6. An air spring with height detection function according to claim 2, characterized in that, The connector sleeve (7) is made of rubber.

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