Automobile chassis height valve assembly

Abstract

The utility model relates to the technical field of height valve assemblies, in particular to an automobile chassis height valve assembly which comprises a valve body, a connecting rod support assembly, a transverse connecting rod and a connecting rod rubber part. A sealing cavity is formed between the upper shell and the lower shell; the rotor assembly comprises a rotating shaft, a rotor, a first O-shaped sealing ring, a second O-shaped sealing ring and a gasket; the rotating shaft penetrates through the sealing cavity and is pivoted with the upper shell and the lower shell; the end of the rotating shaft extending out of the valve body is fixedly connected with the connecting rod bracket assembly; the connecting rod bracket assembly comprises a connecting rod bracket, a square nut and a connecting rod supporting plate, and comprises a rotating shaft for driving a rotor positioned in the sealing cavity to rotate relative to the stator assembly; pollutants possibly existing in the valve body are effectively prevented from entering the gas transmission system through the gas inlet; the exhaust port of the chassis height valve is provided with the dustproof noise reduction device, on one hand, the exhaust noise is low, dust and pollutants can be effectively prevented from invading, and the service life is long.

Description

Technical Field

[0001] This utility model relates to the technical field of height valve assembly, specifically to an automotive chassis height valve assembly. Background Technology

[0002] The chassis height valve is used in the chassis suspension system of vehicles with air springs (airbags). By dynamically sensing changes in the vehicle chassis height, it promptly performs air intake or exhaust actions to adjust the height of the chassis air springs (airbags), improving the vehicle's driving quality under different road conditions, protecting transported goods and the chassis, and preventing road surface damage from wheel impacts.

[0003] Chinese invention patent CN202211551358.4 describes an active control device and method for bus body height. The method connects the output shaft of a drive mechanism with the adjusting rod of a mechanical height valve, using the output shaft to actively control the length of the adjusting rod. This allows for active control of the rod's swing angle, which in turn controls the inflation and deflation of the air spring, thus achieving active control of the bus body height. The device is simple in structure and low in cost, overcoming the problem that existing ECAS systems are complex and expensive, increasing the cost per vehicle by approximately 3000 yuan compared to mechanical height valves.

[0004] However, the current chassis height valve is installed on the vehicle chassis, and the working environment is complex and variable. Therefore, it requires a stronger housing than traditional height valves. In addition, the vehicle chassis is subjected to complex stress conditions. When the connecting rod receives impact vibration perpendicular to the valve body surface, the connecting rod bracket exerts a large torque on the shaft of the chassis height valve. After repeated occurrences, the shaft position is prone to failure, thereby reducing the service life of the chassis height valve. At the same time, the exhaust port of the height valve is open, which not only results in loud exhaust noise, but also allows dust to easily enter the valve core through the exhaust port, accelerating the deterioration of the valve core. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides an automotive chassis height valve assembly, which can effectively solve the problems of the prior art, such as the shaft position failure caused by the cumulative number of times, thereby reducing the service life of the chassis height valve, and the problem caused by the open exhaust port of the height valve.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides an automotive chassis height valve assembly, including a valve body, a connecting rod bracket assembly, a cross link, and connecting rod rubber parts. The valve body includes an upper housing, a lower housing, a rotor assembly, and a stator assembly. A sealed cavity is formed between the upper and lower housings, and the rotor assembly includes a shaft, a rotor, a first O-ring, a second O-ring, and a gasket. The shaft passes through the sealed cavity and is pivotally connected to the upper and lower housings. The end of the shaft extending out of the valve body is fixedly connected to the connecting rod bracket assembly. The connecting rod bracket assembly includes a connecting rod bracket, a square nut, and a connecting rod support plate. The shaft drives the rotor located in the sealed cavity to rotate relative to the stator assembly. The lower housing has two sides... The valve body is equipped with one air inlet, two air bladder ports, and one exhaust port, which are located on different sides of the valve body. The outer end of the exhaust port is fitted with a sealing gasket that can be pushed outwards from the inner end of the exhaust port. When the shaft rotates, it drives the rotor to move relative to the stator, achieving either a conductive air intake state between the air inlet and air bladder ports, a conductive air exhaust state between the air bladder ports and the exhaust port, or a balanced state where the air inlet, air bladder ports, and exhaust port are not interconnected. The valve body is fixedly connected to a connecting rod rubber component via a horizontal connecting rod. The connecting rod rubber component includes a clamp, a gasket, and a cotter pin. The top of the clamp is fitted with a gasket, and the top of the gasket is fitted with a cotter pin.

[0008] Furthermore, it includes an air inlet transition seat and a sealing ring. The air inlet is provided with a stepped structure. The air inlet transition seat is fixedly connected to the air inlet, and the sealing ring is disposed between the air inlet transition seat and the stepped structure.

[0009] Furthermore, airbag filter screens are installed at the bottom of both airbag openings, and each airbag is fixed by a filter screen pressure ring. An air inlet filter screen is installed at the bottom of the air inlet.

[0010] Furthermore, a sealing diaphragm is provided at the bottom of the air inlet transition seat, and an air inlet spring is provided at the bottom of the sealing diaphragm.

[0011] Furthermore, a limiting ring is provided on the outer sleeve of the square nut, and the limiting ring abuts against the end face of the air inlet and the airbag opening.

[0012] Furthermore, the lower housing is also provided with an exhaust port, the exhaust port is provided with a third O-ring and a fourth O-ring, the outer side of the stator is provided with a fifth O-ring, and the outer side of the fifth O-ring is provided with a stator spring.

[0013] Furthermore, the third O-ring is an elastic retaining ring, the third O-ring is attached to the end face of the exhaust port, and one end of the third O-ring is fixed to the lower housing, and the fourth O-ring is sleeved on the outside of the rotating shaft gasket.

[0014] Furthermore, the rotor is a silicon carbide rotor and an alumina ceramic rotor structure, and both the upper and lower end faces of the rotor are smooth. The connecting rod support is a bent structure, and the top of the connecting rod support is provided with a square nut, an external hexagonal bolt and a flange locking nut. The connecting rod support plate is disposed inside the connecting rod support. The external hexagonal bolt passes through the connecting rod support and is fixedly connected to the square nut. The flange locking nut passes through the connecting rod support and is fixedly connected to the rotating shaft.

[0015] Furthermore, the valve body is provided with two positioning mounting holes parallel to the rotating shaft, and valve body fixing bolts are installed in the positioning mounting holes. The valve body fixing bolts are interference-fitted with the positioning mounting holes. Positioning mounting posts are provided on both sides of the top end of the lower housing, and the positioning mounting posts are provided with direction marks and misalignment slots.

[0016] Furthermore, the end of the rotating shaft located outside the valve body is provided with a threaded countersunk hole, and an external hexagonal bolt is provided in the threaded countersunk hole. A rocker arm is fixed on the rotating shaft through the threaded countersunk hole and a clamping screw. A polymer bushing is sleeved on the inner and outer sides of the rotating shaft, and a rotating shaft washer is sleeved on the outer side of the rotating shaft.

[0017] The technical solution provided by this utility model has the following advantages compared with the known public technology:

[0018] This utility model has a simple structure. By setting the two airbag ports on the same horizontal line, it improves installation efficiency and layout convenience. The positioning mounting column ensures the installation accuracy of the valve body components and also provides mounting holes for the valve body, achieving two goals at once. Both the air inlet and the airbag port adopt end face sealing, which can ensure sealing performance even if the air pipe layout requires a large bending radius. The air inlet sealing diaphragm ensures that the airbag port pressure is lower than the air inlet pressure, so that the air inlet and airbag port can conduct, and effectively prevents contaminants that may be present in the valve body from entering the air transmission system through the air inlet. The exhaust port of the chassis height valve is equipped with a dustproof and noise reduction device, which not only reduces exhaust noise but also effectively prevents dust and contaminants from entering, acting as a one-way valve with a long service life. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a front view schematic diagram of the chassis height valve assembly disclosed in a preferred embodiment of the present utility model;

[0021] Figure 2 This is a schematic perspective view of the chassis height valve assembly disclosed in a preferred embodiment of the present invention;

[0022] Figure 3 This is a schematic perspective view of the chassis height valve assembly with the upper housing removed, as disclosed in the preferred embodiment of this utility model;

[0023] Figure 4 This is a rear view schematic diagram of the chassis height valve assembly disclosed in a preferred embodiment of the present utility model;

[0024] Figure 5 This is a schematic diagram of the first internal structure of the chassis height valve assembly disclosed in a preferred embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the second internal structure of the chassis height valve assembly disclosed in a preferred embodiment of the present invention;

[0026] Figure 7 This is a front view schematic diagram of the chassis height valve connecting rod bracket assembly structure disclosed in a preferred embodiment of this utility model;

[0027] Figure 8 This is a top view schematic diagram of the chassis height valve connecting rod bracket assembly structure disclosed in a preferred embodiment of this utility model;

[0028] Figure 9 This is a schematic perspective view of the chassis height valve cross linkage assembly structure disclosed in a preferred embodiment of this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Valve body; 2. Lower housing; 3. Upper housing; 4. Valve body fixing bolts; 5. Inlet transition seat; 51. Rocker arm; 6. First O-ring seal; 7. Sealing diaphragm; 8. Inlet spring; 9. Inlet filter; 10. Airbag filter; 11. Filter pressure ring; 12. Second O-ring seal; 13. Polymer bushing; 14. Shaft; 15. Shaft gasket; 16. Third O-ring seal; 17. Fourth O-ring seal; 18. Rotor; 19. Stator; 20. Fifth O-ring seal; 21. Stator spring; 22. Flange lock nut; 23. Connecting rod bracket assembly; 24. Connecting rod bracket; 25. Square nut; 26. Connecting rod support plate; 27. External hex bolt; 28. Cross link; 29. ​​Connecting rod rubber parts; 30. Cotter pin; 31. Gasket; 32. Clamp; 33. Sealing gasket; 34. Air inlet; 35. Airbag inlet; 36. Exhaust outlet; 37. Positioning mounting post; 38. Direction indicator; 39. Misaligned oblong hole. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0032] The present invention will be further described below with reference to the embodiments.

[0033] See attached document Figure 1-9 A height valve assembly for an automobile chassis includes a valve body 1, a connecting rod bracket assembly 23, a cross connecting rod 28, and a connecting rod rubber component 29. The valve body 1 includes an upper housing 3, a lower housing 2, a rotor assembly, and a stator assembly. A positioning sleeve 4 is interference-fitted with the upper housing 6 and the lower housing 7, serving both a positioning function and improving the strength of the valve body 1. The inner hole of the positioning sleeve 4 serves as a positioning mounting hole for the height valve assembly and the vehicle, making the height valve easy and quick to install. A sealed cavity is formed between the upper housing 3 and the lower housing 2, and the rotor assembly includes a rotating shaft 14, a rotor 18, and a stator assembly. O-ring 6, second O-ring 12, gasket 31; rotating shaft 14 passes through the sealing cavity and is pivotally connected to the upper housing 3 and lower housing 2; the end of rotating shaft 14 extending out of valve body 1 is fixedly connected to connecting rod support assembly 23; connecting rod support assembly 23 includes connecting rod support 24, square nut 25, and connecting rod support plate 26, including rotating shaft 14 driving rotor 18 located in the sealing cavity to rotate relative to stator assembly; the lower housing 2 is provided with an air inlet 34, two air bladder ports 35, and an exhaust port 36 on both sides. An exhaust port 36 is located on different sides of the valve body 1; the outer end of the exhaust port 36 is provided with a sealing gasket 33 that can be pushed outward from the inner end of the exhaust port 36; when the rotating shaft 14 rotates, it drives the rotor 18 to move relative to the stator 19, realizing the conduction intake state between the air inlet 34 and the air bladder port 35, or the conduction exhaust state between the air bladder port 35 and the exhaust port 36, or the balanced state in which the air inlet 34, the air bladder port 35, and the exhaust port 36 are not connected to each other. The valve body 1 is fixedly connected to the connecting rod rubber component 29 through the horizontal connecting rod 28, and the connecting rod rubber component 29 contains a... The system includes a clamp 32, a gasket 31, and a cotter pin 30. The clamp 32 has a gasket 31 at its top, and the gasket 31 has a cotter pin 30 at its top. The stator 13 is tightly fitted to the rotor 11 under the elastic force of the spring 15, and the contact surface is coated with grease. This sealing technology better prevents failure modes caused by dust and contaminant intrusion. The rotor 11 is made of silicon carbide or alumina ceramic material with smooth upper and lower sides. It is hard and wear-resistant, which enables it to maintain excellent performance in high-frequency motion and contaminated environments, effectively ensuring the long service life of the height valve.

[0034] The system includes an air inlet transition seat 5 and a sealing ring. The air inlet 34 has a stepped structure. The air inlet transition seat 5 is fixedly connected to the air inlet 34, and the sealing ring is located between the air inlet transition seat 5 and the stepped structure. Air inlet filters 10 are installed at the bottom of both air bladder ports 35, and each is fixed by a filter pressure ring 11. An air inlet filter 9 is installed at the bottom of the air inlet 34. This system can prevent dust and pollutants from entering and further protect the valve core of the valve body 1.

[0035] A sealing diaphragm 7 is provided at the bottom of the air inlet transition seat 5, and an air inlet spring 8 is provided at the bottom of the sealing diaphragm 7; a limit retaining ring is provided on the outer sleeve of the square nut 25, and the limit retaining ring abuts against the end face of the air inlet 34 and the air bladder opening 35; when the swing rod 5 swings downward, the waist hole groove of the rotor 11 is connected to the stator 13 in the air inlet groove 22, and compressed air enters the air inlet groove 22 from the air inlet 2, and then enters the valve body sealing cavity through the connected stator 13 and rotor 11, and finally enters the air bladder through the air bladder opening 3 to realize the inflation of the air bladder; when the swing rod 5 swings upward, the waist hole groove of the rotor 11 is connected to the stator 13 in the exhaust groove 23, and the compressed gas in the air bladder enters the exhaust groove 23 through the connected stator 13 and rotor 11, and finally exits the height valve sealing cavity through the exhaust port 24.

[0036] The lower housing 2 is also provided with an exhaust port 36, which is provided with a third O-ring 16 and a fourth O-ring 17. A fifth O-ring 20 is fitted on the outside of the stator 19, and a stator spring 21 is fitted on the outside of the fifth O-ring 20. The third O-ring 16 is an elastic retaining ring, which fits against the end face of the exhaust port 36, and one end of the third O-ring 16 is fixed to the lower housing 2. The fourth O-ring 17 is fitted on the outside of the rotating shaft washer 15.

[0037] The rotor 18 is a silicon carbide rotor and an alumina ceramic rotor structure. The upper and lower end faces of the rotor 18 are smooth. The connecting rod support 24 is a bent structure, and the top of the connecting rod support 24 is provided with a square nut 25, an external hex bolt 27 and a flange locking nut 22. The connecting rod support plate 26 is set inside the connecting rod support 24. The external hex bolt 27 passes through the connecting rod support 24 and is fixedly connected to the square nut 25. The flange locking nut 22 passes through the connecting rod support 24 and is fixedly connected to the rotating shaft 14.

[0038] The valve body 1 is provided with two positioning mounting holes of parallel rotating shaft 14. Valve body fixing bolts 4 are installed in the positioning mounting holes. Valve body fixing bolts 4 are interference fit with the positioning mounting holes. Positioning mounting posts 37 are provided on both sides of the top of the lower housing 2. The positioning mounting posts 37 are provided with direction marks 38 and misaligned waist-shaped holes 39.

[0039] The end of the rotating shaft 14 located outside the valve body 1 is provided with a threaded countersunk hole, and an external hexagon bolt 27 is provided in the threaded countersunk hole. A rocker arm 51 is fixed on the rotating shaft 14 through the threaded countersunk hole and the clamping screw. A polymer bushing 13 is sleeved on the inner and outer sides of the rotating shaft 14, and a rotating shaft gasket 15 is sleeved on the outer side of the rotating shaft 14.

[0040] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A chassis height valve assembly for automobiles, characterized in that, The system includes a valve body (1), a connecting rod support assembly (23), a cross connecting rod (28), and a connecting rod rubber component (29). The valve body (1) includes an upper housing (3), a lower housing (2), a rotor assembly, and a stator assembly. A sealed cavity is formed between the upper housing (3) and the lower housing (2). The rotor assembly includes a shaft (14), a rotor (18), a first O-ring seal (6), a second O-ring seal (12), and a gasket (31). The shaft (14) passes through the sealed cavity and is connected to the upper housing. The housing (3) and the lower housing (2) are pivotally connected; the end of the rotating shaft (14) extending out of the valve body (1) is fixedly connected to the connecting rod support assembly (23); the connecting rod support assembly (23) includes a connecting rod support (24), a square nut (25), and a connecting rod support plate (26), including the rotating shaft (14) which drives the rotor (18) located in the sealed cavity to rotate relative to the stator assembly; the lower housing (2) has an air inlet (34) and two air bladder ports (35) on both sides. The valve body (1) has an air inlet (34), two air bladder ports (35), and an exhaust port (36) located on different sides of the valve body (1). The outer end of the exhaust port (36) is provided with a sealing gasket (33) that can be pushed outward from the inner end of the exhaust port (36). When the rotating shaft (14) rotates, it drives the rotor (18) to move relative to the stator (19), achieving a conductive air intake state between the air inlet (34) and the air bladder ports (35), or between the air bladder ports (35). In the state of conduction and exhaust between the exhaust port (36) or the balanced state of non-connection between the air inlet (34), the air bladder port (35), and the exhaust port (36), the valve body (1) is fixedly connected to the connecting rod rubber component (29) through the horizontal connecting rod (28). The connecting rod rubber component (29) includes a clamp (32), a gasket (31), and a cotter pin (30). The top of the clamp (32) is provided with a gasket (31), and the top of the gasket (31) is provided with a cotter pin (30).

2. The automotive chassis height valve assembly according to claim 1, characterized in that, It also includes an air inlet transition seat (5) and a sealing ring. The air inlet (34) is provided with a stepped structure. The air inlet transition seat (5) is fixedly connected to the air inlet (34), and the sealing ring is disposed between the air inlet transition seat (5) and the stepped structure.

3. The automotive chassis height valve assembly according to claim 1, characterized in that, The bottom of each of the two airbag openings (35) is equipped with an airbag opening filter (10), and each is fixed by a filter screen pressure ring (11). The bottom of the air inlet (34) is equipped with an air inlet filter (9).

4. The automotive chassis height valve assembly according to claim 2, characterized in that, The bottom of the air inlet transition seat (5) is provided with a sealing diaphragm (7), and the bottom of the sealing diaphragm (7) is provided with an air inlet spring (8).

5. The automotive chassis height valve assembly according to claim 2, characterized in that, A limiting ring is provided on the outer sleeve of the square nut (25), and the limiting ring abuts against the end face of the air inlet (34) and the airbag opening (35).

6. The automotive chassis height valve assembly according to claim 1, characterized in that, The lower housing (2) is also provided with an exhaust port (36), the exhaust port (36) is provided with a third O-ring seal (16) and a fourth O-ring seal (17), the stator (19) is fitted with a fifth O-ring seal (20) on the outside, and a stator spring (21) is fitted on the outside of the fifth O-ring seal (20).

7. The automotive chassis height valve assembly according to claim 6, characterized in that, The third O-ring seal (16) is an elastic retaining ring. The third O-ring seal (16) fits the end face of the exhaust port (36), and one end of the third O-ring seal (16) is fixed to the lower housing (2). The fourth O-ring seal (17) is sleeved on the outside of the rotating shaft gasket (15).

8. The automotive chassis height valve assembly according to claim 7, characterized in that, The rotor (18) is a silicon carbide rotor and an alumina ceramic rotor structure. The upper and lower end faces of the rotor (18) are smooth. The connecting rod bracket (24) is a bent structure. The top of the connecting rod bracket (24) is provided with a square nut (25), an external hexagonal bolt (27) and a flange locking nut (22). The connecting rod support plate (26) is set inside the connecting rod bracket (24). The external hexagonal bolt (27) passes through the connecting rod bracket (24) and is fixedly connected to the square nut (25). The flange locking nut (22) passes through the connecting rod bracket (24) and is fixedly connected to the rotating shaft (14).

9. The automotive chassis height valve assembly according to claim 8, characterized in that, The valve body (1) is provided with two positioning mounting holes parallel to the rotating shaft (14). A valve body fixing bolt (4) is installed in the positioning mounting hole. The valve body fixing bolt (4) is interference-fitted with the positioning mounting hole. Positioning mounting posts (37) are provided on both sides of the top of the lower housing (2). The positioning mounting posts (37) are provided with direction marks (38) and misaligned waist-shaped holes (39).

10. The automotive chassis height valve assembly according to claim 9, characterized in that, The end of the rotating shaft (14) located outside the valve body (1) is provided with a threaded countersunk hole, and an external hexagonal bolt (27) is provided in the threaded countersunk hole. A rocker arm (51) is fixed on the rotating shaft (14) through the threaded countersunk hole and the clamping screw. A polymer bushing (13) is sleeved on the inner and outer sides of the rotating shaft (14), and a rotating shaft washer (15) is sleeved on the outer side of the rotating shaft (14).

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