Height valve integrated cockpit suspension assembly

Abstract

The utility model relates to an altitude valve integrated cockpit suspension assembly which integrates an air shock absorber, a damping shock absorber and an altitude valve. The air shock absorber comprises an air bag and an upper cover assembly. The damping shock absorber comprises a piston cylinder and a piston rod. A valve body of the altitude valve is matched with the vibration direction through four-cavity graded airflow control (a first air inlet cavity, a second air inlet cavity and an exhaust cavity) and guide groove segmented design (air channels such as rapid inflation and slow exhaust), and a pin shaft drives a swing support to accurately open and close an air hole. Optimization comprises the steps that the sliding lengths of the air charging / discharging channels are different, and the large-aperture air inlet cavity and the small-aperture air discharging cavity cooperatively adjust the flow; a valve core moving plate sealing positioning hole and an elastic cushion enhance sealing; the positioning sleeve is concentric with the thin-wall inserting ring through the flange ring; the air bag curled edge comprises a steel wire ring for displacement resistance; a piston rod cushion and an elastic gasket are used for damping; and an emergency stopper in the air bag prevents collapse. The design realizes the self-adaptive adjustment of the height of the suspension, improves the comfort, the energy efficiency and the safety, and is suitable for vehicles with complex road conditions.

Description

Technical Field

[0001] This utility model specifically relates to an integrated height valve cockpit suspension assembly. Background Technology

[0002] Chinese invention patent application CN114135618B discloses an air spring integrated height valve, which consists of a cover, a valve body, a drive assembly, and auxiliary structures. The cover has an axial cavity and a mounting groove, with an air inlet and an air outlet on its end face. A return spring is installed at the bottom of the cavity. The valve body includes a valve seat, a stationary valve core, and a moving valve core. The stationary valve core has staggered air inlet and air outlet holes, and the moving valve core can slide and rotate to open or close the holes. The drive assembly consists of a guide, a swing bracket, and a pin. The guide has a guide groove on its side wall and is elastically connected to the bottom of the cavity via the return spring. The pin is embedded in the guide groove, converting the up-and-down movement of the guide into the rotational movement of the swing bracket, which in turn drives the moving valve core to rotate. The auxiliary structures include a positioning sleeve, a sealing gasket, and a snap-fit.

[0003] During operation, the valve core's moving plate initially closes all holes. When the vehicle body vibrates upwards, the guide component moves upwards due to the vibration, causing the pin to slide along the guide groove. This drives the valve core's moving plate to rotate and open the exhaust port. Small vibrations open the small hole, while large vibrations open both the large and small holes, lowering the airbag height. When the vehicle body vibrates downwards, the guide component moves downwards, driving the valve core's moving plate to rotate and open the intake port. Small vibrations open the small hole, while large vibrations open both the large and small holes, raising the airbag height. After the vibration ends, the return spring pushes the guide component back to its initial position, closing all holes.

[0004] For those skilled in the art, the key to achieving the "opening or closing of the air inlet and exhaust port" in the height valve lies in the specific structural shape of the "guide groove," because how the swing bracket achieves left swing, right swing, and the speed of each swing all depend on the specific structural shape of the "guide groove." However, the specific structural shape of the "guide groove" is not disclosed in this document, and those skilled in the art cannot achieve the "height valve" based on the text and drawings in the document.

[0005] For example, when the guide groove is a straight channel arranged along the axial direction of the guide member, the pin can only slide linearly in the vertical direction and cannot generate rotational motion. The rotation of the swing bracket depends on the rotational action of the pin, but the straight groove cannot convert the up-and-down movement of the guide member into rotational motion. The valve core moving plate cannot rotate, causing the air inlet and exhaust ports to remain closed, and the height valve completely fails.

[0006] Alternatively, when the guide groove is a closed annular groove in the horizontal plane (such as a circle or ellipse), the pin will slide cyclically within the annular groove, causing the swing bracket to rotate without direction. When the vehicle body vibrates, the up-and-down movement of the guide will drive the pin to slide along the annular groove, but the rotation direction of the swing bracket cannot correspond to the vibration direction of the vehicle body (e.g., it needs to turn left for upward vibration and right for downward vibration). The valve core's rotation direction is chaotic, making it impossible to open specific air intake or exhaust ports as needed, resulting in the height valve remaining in a malfunctioning state.

[0007] In summary, it is necessary to improve the existing air springs with height valves, design a reasonable guide groove structure, and combine the height valve with the air springs for use in the cockpit suspension assembly. Utility Model Content

[0008] The technical problem to be solved by this utility model is to provide an integrated height valve cockpit suspension assembly to address the shortcomings of the prior art, thereby solving the problems of chaotic rotation direction, pin jamming, and non-compact structure of the existing height valve, optimizing the inflation and deflation control logic, and improving the system response accuracy and stability.

[0009] To achieve the above objectives, this utility model provides the following technical solution: an integrated height valve cockpit suspension assembly, including an air shock absorber, a damping shock absorber, and a height valve. The air shock absorber includes a top cover assembly and an airbag. The damping shock absorber includes a piston cylinder and a piston rod linked to the piston cylinder. The upper end of the airbag is fixedly connected to the top cover assembly, and the middle part of the top cover assembly is sleeved on the upper outer periphery of the piston rod. The height valve includes a valve sleeve, a valve body, and a drive assembly. The valve sleeve has a cavity extending axially along the valve sleeve and a mounting groove on the side wall of the cavity. The valve sleeve is sleeved on the outer periphery of the piston cylinder through the cavity and is fixedly connected to the piston cylinder. The lower end of the airbag is fixed to the valve sleeve. The valve body includes a valve seat, a moving valve core, and a stationary valve core fixed on the valve seat. The moving valve core and the stationary valve core are opposite each other. The valve seat is fixed in the mounting groove, and fluid discharge occurs between the stationary valve core and the valve seat. The unit structure includes a guide member and a swing bracket. The guide member has a guide groove on its side wall. One end of the guide member is slidably disposed in the cavity and elastically connected to the bottom end of the cavity. The middle part of the swing bracket is hinged to the valve seat. One end of the swing bracket is linked with the valve core moving plate. The other end of the swing bracket is equipped with a pin, which is inserted into the guide groove. The guide groove includes a rapid inflation channel, an inflation opening channel, a middle channel, a slow exhaust channel, and a rapid exhaust channel arranged sequentially along the axial direction of the guide member. The rapid inflation channel, inflation opening channel, middle channel, slow exhaust channel, and rapid exhaust channel are arranged in a staggered manner along the circumference of the guide member and in the same direction. There are connecting channels between the inflation opening channel and the rapid inflation channel, and between the slow exhaust channel and the rapid exhaust channel. Each set of connecting channels is inclined.

[0010] Using the above technical solution, the guide channel is divided into a rapid inflation channel, an inflation opening channel, a mid-section channel, a slow exhaust channel, and a rapid exhaust channel. Each section is arranged in a staggered manner along the circumference, and an inclined connecting channel is set to ensure that the pin's movement trajectory strictly corresponds to the direction of vehicle body vibration, solving the problem of chaotic rotation direction. Simultaneously, the pin will not get stuck when switching between channels. When the road surface is relatively flat, the pin is located in the mid-section channel, and the swing bracket does not swing. During the inflation phase, the vehicle body vibrates downwards, the guide component moves downwards, and the pin enters the inflation opening channel from the rapid inflation channel through the connecting channel, driving the swing bracket to rotate to the right, gradually opening the air intake (small opening for small holes, large opening for large holes). During the exhaust phase, the vehicle body vibrates upwards, the guide component moves upwards, and the pin enters the rapid exhaust channel from the slow exhaust channel through the connecting channel, driving the swing bracket to rotate to the left, gradually opening the exhaust port (small opening for small holes, large opening for large holes). The valve sleeve is fitted around the piston cylinder through a cavity and is directly fixed to the lower end of the airbag, forming a compact integrated structure.

[0011] The aforementioned height valve integrated cockpit suspension assembly can be further configured such that the rapid inflation airway, rapid exhaust airway, and slow exhaust airway are all straight and parallel to the axial direction of the guide member, the inflation opening airway is inclined, and the inclination angle of the inflation opening airway is smaller than the inclination angle of the connecting airway.

[0012] Using the above technical solution, the rapid inflation airway is set as a "straight line parallel to the axis of the guide component." When the vehicle body vibrates significantly downwards, the pin moves rapidly downwards along the straight groove, driving the swing bracket to rotate clockwise at a large angle, opening the air intake and achieving rapid airbag inflation. The rapid exhaust airway is set as a "straight line parallel to the axis of the guide component." When the vehicle body vibrates significantly upwards, the pin moves rapidly upwards along the straight groove, driving the swing bracket to rotate counterclockwise at a large angle, simultaneously opening the exhaust port and achieving rapid airbag deflation. The operating logic and performance of the height valve have been optimized to achieve rapid adjustment of suspension height and reduce severe vehicle body sway. The inflation opening airway is set as a "low-angle tilt." When the vehicle body vibrates slightly downwards, the pin moves slowly along the low-angle airway, driving the swing bracket to rotate clockwise at a small angle, opening only the air intake port, achieving micro-inflation of the airbag and avoiding excessive airflow during small vibrations.

[0013] The aforementioned height valve integrated cockpit suspension assembly can be further configured such that: the sliding length of the rapid inflation air passage is shorter than the sliding length of the rapid exhaust air passage, and the sliding lengths of the inflation opening air passage and the slow exhaust air passage are both shorter than the sliding length of the rapid inflation air passage.

[0014] Using the above technical solution, when the vehicle body vibrates downwards significantly, the pin shaft slides quickly across a short inflation channel, driving the swing bracket to rotate at a large angle and rapidly opening the large-diameter air inlet, enabling rapid airbag inflation and improving inflation response speed. This is suitable for emergency obstacle avoidance or severe bumpy scenarios, reducing the vehicle body's downward drop. When the vehicle body vibrates upwards significantly, the pin shaft slides along a longer air channel, driving the swing bracket to rotate slowly and simultaneously opening the large-diameter exhaust port, extending the exhaust time and avoiding sudden changes in suspension height caused by a sudden drop in airbag pressure, thus improving vehicle stability. With a short to medium sliding length for both the air inlet and exhaust channels, the pin shaft's movement is limited during minor vehicle body vibrations, only driving the valve core moving plate to rotate at a small angle, slightly opening the small-diameter air inlet, preventing overshoot during minor vibrations.

[0015] The aforementioned height valve integrated cockpit suspension assembly can be further configured as follows: the fluid discharge unit structure includes four non-communicating first intake chambers, second intake chambers, first exhaust chambers, and second exhaust chambers disposed between the valve core stationary plate and the valve seat. The first and second intake chambers are arranged vertically, as are the first and second exhaust chambers, and both are located on the same side of the first and second intake chambers. The valve seat is provided with an intake channel, an intake port communicating with the intake channel, an exhaust channel, and an exhaust port communicating with the exhaust channel. The intake port is connected to an air source, and the exhaust port is connected to the atmosphere. The intake channel and the exhaust channel are not interconnected. The first intake chamber is configured with a first... The intake port and the second intake chamber are respectively connected to the intake channel through the second intake port. The first exhaust chamber is respectively connected to the exhaust channel through the first exhaust port and the second exhaust chamber through the second exhaust port. The inner diameter of the first intake port is larger than the inner diameter of the second intake port, and the inner diameter of the first exhaust port is smaller than the inner diameter of the second exhaust port. The valve core stationary plate is provided with a first intake port connected to the first intake chamber, a second intake port connected to the second intake chamber, a first exhaust port connected to the first exhaust chamber, and a second exhaust port connected to the second exhaust chamber. The valve core moving plate is slidably disposed on the valve core stationary plate and is capable of closing the first intake port or the second intake port or the first exhaust port or the second exhaust port.

[0016] Compared with existing technologies, the above technical solution, by setting "connecting holes" at the ends of each air chamber to directly connect with the air intake or exhaust port, eliminates the need for additional connecting pipes. Furthermore, the inner diameter of each connecting hole is rationally planned to meet the vehicle's shock absorption needs under different road conditions. On the intake side, the first large intake connecting hole opens first to quickly fill the airbag and cope with sudden large-amplitude impacts; the second small intake connecting hole provides supplementary adjustment to maintain stable air pressure. On the exhaust side, the first small exhaust connecting hole slowly exhausts air to reduce vehicle rebound; the second large exhaust connecting hole provides emergency pressure relief to prevent suspension overload. Specifically, during the inflation phase: When facing small-amplitude vibrations, the valve core rotates clockwise to open the first air inlet, allowing airflow to quickly inflate through the first air inlet chamber and the first air inlet connecting hole (with a larger inner diameter). When facing large-amplitude vibrations, the valve core continues to rotate clockwise, simultaneously opening the second air inlet. Building upon the previous inflation, airflow further inflates through the second air inlet chamber and the second air inlet connecting hole (with a smaller inner diameter), supplementing the flow to balance the high-pressure demand. During the deflation phase: When facing small-amplitude vibrations, the valve core rotates counterclockwise to open the first exhaust port, allowing airflow to slowly release gas through the first exhaust chamber and the first exhaust connecting hole (with a smaller inner diameter). When facing large-amplitude vibrations, the valve core further rotates counterclockwise to open the second exhaust port. Building upon the previous inflation, airflow quickly depressurizes through the second exhaust chamber and the second exhaust connecting hole (with a larger inner diameter).

[0017] The aforementioned height valve integrated cockpit suspension assembly can be further configured such that: a sealing positioning hole is provided in the middle of the valve core moving plate, a sealing element is installed at the sealing positioning hole, the lower end of the swing bracket is provided with an insertion hole for fixing the valve core moving plate, and an elastic pad distributed between the valve core moving plate and the swing bracket is also provided at the insertion hole.

[0018] Using the above technical solution, the swing bracket drives the valve core moving plate to move (similar to the operation of a windshield wiper). The seals on the valve core moving plate will seal different holes. The seals dynamically compensate for the gap between the contact surfaces (between the valve core moving plate and the valve core stationary plate) when the valve core moving plate rotates, preventing gas leakage. The elastic gasket is used to supplement the gap between the valve core moving plate and the swing bracket, further improving the sealing performance of the valve core moving plate to each hole and preventing gas leakage.

[0019] The aforementioned height valve integrated cockpit suspension assembly can be further configured as follows: one end of the pin is fixed with a sliding block inserted into a guide groove; the upper part of the sliding block is provided with an upwardly inclined surface symmetrically distributed on both sides; the lower part of the sliding block is provided with a downwardly inclined surface symmetrically distributed on both sides; the other end of the pin is provided with a groove; a shock-absorbing spring is installed in the groove; the end of the shock-absorbing spring away from the groove abuts against the swing bracket; a return spring is installed on the bottom surface of the cavity; the return spring is fixedly connected to one end of the guide member.

[0020] Using the above technical solution, two sets of upper inclined surfaces and two sets of lower inclined surfaces form a wedge-shaped guide structure, reducing the friction between the pin and the inner wall of the guide groove, making the pin slide and rotate more smoothly. A damping spring is placed between the pin and the swing bracket, which reduces wear between the pin and the swing bracket, absorbs high-frequency vibration energy, and the elastic force of the damping spring stably inserts the pin into the guide groove, preventing it from slipping out. The return spring assists in the reset of the guide component.

[0021] The aforementioned height valve integrated cockpit suspension assembly can be further configured as follows: the height valve also includes a positioning sleeve, a connecting flange ring is provided above the positioning sleeve and a thin-walled insertion ring is provided below the positioning sleeve, the middle of the positioning sleeve is provided with a connecting hole that passes through the connecting flange ring and the thin-walled insertion ring sequentially along the axial direction of the positioning sleeve, the connecting flange ring is sleeved on the outer periphery of the guide member through the connecting hole, the thin-walled insertion ring is inserted into the cavity, the connecting flange ring is provided with a number of sets of screw holes arranged sequentially at intervals along the circumference of the connecting flange ring, the valve sleeve is provided with a set of threaded positioning holes corresponding to each set of screw holes, and the connecting flange ring is provided with a guide hole that is clearance-fitted with the upper end of the swing bracket.

[0022] The above technical solution ensures precise fixing of the positioning sleeve and valve sleeve through circumferentially distributed screw holes and threaded positioning holes, guaranteeing a detachable and fixed connection and concentricity between them. A guide hole is added to the connecting flange ring to limit radial displacement of the swing bracket during movement.

[0023] The aforementioned height valve integrated cockpit suspension assembly can be further configured such that: a limiting ring is provided on the outer periphery of the connecting flange ring, and a rolled edge is provided at the lower end of the airbag to abut against the lower end of the limiting ring; the rolled edge is also fixedly connected to the lower end of the valve sleeve, and a steel wire ring is provided inside the rolled edge.

[0024] Using the above technical solution, the limiting ring limits the lower end of the airbag to prevent it from moving up and down. The lower edge of the airbag has an embedded steel wire ring, which is fixed to the lower end of the valve sleeve by a pressing process to form a rigid locking structure.

[0025] The aforementioned height valve integrated cockpit suspension assembly can be further configured such that: a buffer pad distributed between the piston cylinder and the upper cover assembly is sleeved on the outer periphery of the piston rod, and an elastic pad fixed above the piston cylinder is provided below the buffer pad.

[0026] Using the above technical solution, the buffer pad is sleeved on the outer periphery of the piston rod, between the piston cylinder and the upper cover assembly, forming the first-level buffer layer. The elastic pad is used to position the buffer pad as the second-level elastic support, avoiding large impacts between the piston cylinder and the upper cover assembly.

[0027] The aforementioned height valve integrated cockpit suspension assembly can be further configured such that: an emergency stop distributed within the airbag is fixed below the upper cover assembly.

[0028] Using the above technical solution, when the airbag is compressed, the emergency stop replaces the piston cylinder in contact with the upper cover assembly above the airbag, further protecting the piston, airbag, and upper cover assembly.

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0030] Figure 1 This is a cross-sectional schematic diagram of an embodiment of the present utility model;

[0031] Figure 2 This is a schematic diagram of the height valve structure according to an embodiment of the present utility model. Figure 1 ;

[0032] Figure 3 This is an exploded view of an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the valve core moving plate in an embodiment of the present utility model;

[0034] Figure 5 This is a schematic diagram of the swing bracket according to an embodiment of the present utility model;

[0035] Figure 6 This is a schematic diagram of the positioning sleeve according to an embodiment of the present utility model;

[0036] Figure 7 This is a schematic diagram of the pin shaft according to an embodiment of the present utility model;

[0037] Figure 8 This is a schematic diagram of the valve seat according to an embodiment of the present utility model;

[0038] Figure 9 This is a schematic diagram of the valve core stationary plate in an embodiment of the present utility model;

[0039] Figure 10 This is a schematic diagram of the height valve structure according to an embodiment of the present utility model. Figure 2 ;

[0040] Figure 11 for Figure 10 Enlarged view of a portion of point A in the middle;

[0041] Figure 12 This is a schematic diagram of the air inlet area versus compression displacement curve during operation of an embodiment of this utility model.

[0042] Figure 13 This is a schematic diagram of the exhaust port area versus tensile displacement curve during operation of an embodiment of this utility model.

[0043] Label annotations: 1. Top cover assembly; 2. Airbag; 3. Piston cylinder; 4. Piston rod; 5. Valve sleeve; 5a. Cavity; 5b. Mounting groove; 5c. Threaded positioning hole; 6. Valve seat; 6a. First intake chamber; 6b. Second intake chamber; 6c. First exhaust chamber; 6d. Second exhaust chamber; 6e. Intake channel; 6f. Exhaust channel; 6g. Exhaust port; 6h. First intake connecting hole; 6j. Second intake connecting hole; 6k. First exhaust connecting hole; 6m. Valve core moving plate; 7. Sealing positioning hole; 7a. Seal; 7b. Valve core stationary plate; 8. First intake hole; 8a. Second intake hole; 8b. First exhaust hole; 8m. c. Second exhaust port 8d; guide component 9, rapid inflation airway 9a, inflation opening airway 9b, mid-section airway 9c, slow exhaust airway 9d, rapid exhaust airway 9e; swing bracket 10, insertion hole 10a, elastic pad 10b; pin 11, sliding block 11a, upper inclined surface 11b, lower inclined surface 11c, groove 11d; shock absorption spring 12, return spring 13; positioning sleeve 14, connecting flange ring 14a, thin-walled insertion ring 14b, connecting hole 14c, limiting ring 14d, guide hole 14e; steel wire ring 15, buffer pad 16, elastic gasket 17, emergency stop 18. Detailed Implementation

[0044] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0045] like Figures 1 to 4 The height valve integrated cockpit suspension assembly shown includes an air shock absorber, a damping shock absorber, and a height valve. The air shock absorber includes a top cover assembly 1 and an airbag 2. The damping shock absorber includes a piston cylinder 3 and a piston rod 4 linked to the piston cylinder 3. The upper end of the airbag 2 is fixedly connected to the top cover assembly 1, and the middle part of the top cover assembly 1 is sleeved on the upper outer periphery of the piston rod 4. The height valve includes a valve sleeve 5, a valve body, and a drive assembly. The valve sleeve 5 has a cavity 5a extending through the valve sleeve 5 axially and a mounting groove 5b set on the side wall of the cavity 5a. The valve sleeve 5 is sleeved on the outer periphery of the piston cylinder 3 through the cavity 5a and the valve sleeve 5 is fixedly connected to the piston cylinder 3. The lower end of the air bag 2 is fixed on the valve sleeve 5. The valve body includes a valve seat 6, a valve core moving plate 7, and a valve core stationary plate 8 fixed on the valve seat 6. The valve core moving plate 7 and the valve core stationary plate 8 are opposite to each other. The valve seat 6 is fixed in the mounting groove 5b. There is a fluid discharge unit structure between the valve core stationary plate 8 and the valve seat 6.

[0046] The drive assembly includes a guide member 9 and a swing bracket 10. The side wall of the guide member 9 is provided with a guide groove. One end of the guide member 9 is slidably disposed in the cavity 5a and elastically connected to the bottom end of the cavity 5a. The middle part of the swing bracket 10 is hinged to the valve seat 6. One end of the swing bracket 10 is linked with the valve core moving plate 7. The other end of the swing bracket 10 is equipped with a pin 11, which is inserted into the guide groove.

[0047] The guide groove includes a rapid inflation channel 9a, an inflation opening channel 9b, a mid-section channel 9c, a slow exhaust channel 9d, and a rapid exhaust channel 9e arranged sequentially along the axial direction of the guide member 9. The rapid inflation channel 9a, the inflation opening channel 9b, the mid-section channel 9c, the slow exhaust channel 9d, and the rapid exhaust channel 9e are arranged sequentially and staggered in the same direction along the circumference of the guide member 9. There are connecting channels between the inflation opening channel 9b and the rapid inflation channel 9a, and between the slow exhaust channel 9d and the rapid exhaust channel 9e. Each set of connecting channels is inclined. The guide channel is divided into a rapid inflation channel 9a, an inflation opening channel 9b, a mid-section channel 9c, a slow exhaust channel 9d, and a rapid exhaust channel 9e. Each section is arranged in a staggered manner along the circumference, and an inclined connecting channel is set to ensure that the movement trajectory of the pin 11 strictly corresponds to the direction of vehicle body vibration, solving the problem of chaotic rotation direction. At the same time, the pin 11 will not get stuck when switching between channels. When the road surface is relatively flat, the pin 11 is located at the mid-section channel 9c, and the swing bracket 10 does not swing. During the inflation stage, the vehicle body vibrates downward, the guide 9 moves downward, and the pin 11 enters the inflation opening channel 9b from the rapid inflation channel 9a through the connecting channel, driving the swing bracket 10 to rotate to the right, gradually opening the air intake. During the exhaust stage, the vehicle body vibrates upward, the guide 9 moves upward, and the pin 11 enters the rapid exhaust channel 9e from the slow exhaust channel 9d through the connecting channel, driving the swing bracket 10 to rotate to the left, gradually opening the exhaust port (small opening for small amplitude, large opening for large amplitude). Among them, the valve sleeve 5 is sleeved on the outer periphery of the piston cylinder 3 through the cavity 5a and directly fixed to the lower end of the airbag 2, forming a compact integrated structure.

[0048] The rapid inflation airway 9a, rapid deflation airway 9e, and slow deflation airway 9d are all straight and parallel to the axis of the guide member 9. The inflation opening airway 9b is tilted, and the tilt angle of the inflation opening airway 9b is smaller than the tilt angle of the connecting airway. The rapid inflation airway 9a is set as "straight and parallel to the axis of the guide member 9." When the vehicle body vibrates significantly downwards, the pin 11 moves rapidly downwards along the straight groove, driving the swing bracket 10 to rotate clockwise at a large angle, opening the air intake and achieving rapid inflation of the airbag 2. The rapid deflation airway 9e is set as "straight and parallel to the axis of the guide member 9." When the vehicle body vibrates significantly upwards, the pin 11 moves rapidly upwards along the straight groove, driving the swing bracket 10 to rotate counterclockwise at a large angle, simultaneously opening the exhaust port and achieving rapid deflation of the airbag 2. The operating logic and performance of the height valve have been optimized to achieve rapid adjustment of the suspension height and reduce severe vehicle body swaying. When the air inlet 9b is set to "low tilt angle", the pin 11 moves slowly along the low tilt angle air inlet when the vehicle body vibrates slightly downward, driving the swing bracket 10 to rotate slightly to the right, opening only the air inlet hole, so as to achieve micro-inflation of the airbag 2 and avoid excessive airflow during small vibrations.

[0049] The sliding length of the rapid inflation airway 9a is shorter than that of the rapid exhaust airway 9e. The sliding lengths of the inflation opening airway 9b and the slow exhaust airway 9d are also shorter than those of the rapid inflation airway 9a. When the vehicle body vibrates downwards significantly, the pin 11 slides quickly across the short inflation airway, driving the swing bracket 10 to rotate at a large angle, rapidly opening the large-diameter air inlet, enabling rapid inflation of the airbag 2, improving inflation response speed, and suitable for emergency obstacle avoidance or severe bumpy scenarios, reducing the vehicle body's downward drop. When the vehicle body vibrates upwards significantly, the pin 11 needs to slide along the longer airway, driving the swing bracket 10 to rotate slowly, simultaneously opening the large-diameter exhaust port, extending the exhaust time, avoiding sudden drops in airbag 2 pressure that could cause abrupt changes in suspension height, and improving vehicle stability. The air opening passage and the slow exhaust passage 9d have a short sliding length. When the vehicle body vibrates slightly, the movement range of the pin shaft 11 is limited, and it only drives the valve core moving plate 7 to rotate at a small angle, slightly opening the small-diameter air hole to avoid overshoot during small vibrations.

[0050] The fluid discharge unit structure includes four non-communicating first intake chambers 6a, second intake chambers 6b, first exhaust chambers 6c, and second exhaust chambers 6d disposed between the valve core stationary plate 8 and the valve seat 6. The first intake chambers 6a and 6b are arranged vertically, as are the first exhaust chambers 6c and 6d, with the first exhaust chambers 6c and 6d located on the same side of the first intake chambers 6a and 6b. The valve seat 6 is provided with an intake channel 6e, an intake port 6f communicating with the intake channel 6e, an exhaust channel 6g, and an exhaust port 6h communicating with the exhaust channel 6g. The intake port 6f is connected to the air source, and the exhaust port 6h is connected to the atmosphere. The intake channel 6e and the exhaust channel 6g are not interconnected. The first intake chamber 6a is connected to the second intake chamber 6b through a first intake communication hole 6i. The first exhaust chamber 6c is connected to the intake channel 6e via a second intake communication hole 6j, and the second exhaust chamber 6d is connected to the exhaust channel 6g via a first exhaust communication hole 6k and a second exhaust communication hole 6m, respectively. The inner diameter of the first intake communication hole 6i is larger than that of the second intake communication hole 6j, and the inner diameter of the first exhaust communication hole 6k is smaller than that of the second exhaust communication hole 6m. The valve core stationary plate 8 is provided with a first intake hole 8a connected to the first intake chamber 6a, a second intake hole 8b connected to the second intake chamber 6b, a first exhaust hole 8c connected to the first exhaust chamber 6c, and a second exhaust hole 8d connected to the second exhaust chamber 6d. The valve core moving plate 7 is slidably mounted on the valve core stationary plate 8 and can close the first intake hole 8a, the second intake hole 8b, the first exhaust hole 8c, or the second exhaust hole 8d. Inflation Stage: When facing small-amplitude vibrations, the valve core moving plate 7 rotates clockwise to open the first air inlet 8a, and the airflow quickly inflates through the first air inlet chamber 6a, the first air inlet connecting hole 6i (with a larger inner diameter), and the air inlet 6f. When facing large-amplitude vibrations, the valve core moving plate 7 continues to rotate clockwise, simultaneously opening the second air inlet 8b. Based on the previous inflated state, the airflow further inflates through the second air inlet chamber 6b, the second air inlet connecting hole 6j (with a smaller inner diameter), and the air inlet 6f, supplementing the flow to balance the high-pressure demand. Exhaust Stage: When facing small-amplitude vibrations, the valve core moving plate 7 rotates counterclockwise to open the first exhaust hole 8c, and the airflow slowly releases gas through the first exhaust chamber 6c, the first exhaust connecting hole 6k (with a smaller inner diameter), and the exhaust port 6h. When facing large-amplitude vibrations, the valve core moving plate 7 further rotates counterclockwise to open the second exhaust hole 8d. Based on the previous inflated state, the airflow quickly depressurizes through the second exhaust chamber 6d and the second exhaust connecting hole 6m (with a larger inner diameter).

[0051] A sealing positioning hole 7a is provided in the middle of the valve core moving plate 7, and a sealing element 7b is installed at the sealing positioning hole 7a. The lower end of the swing bracket 10 is provided with an insertion hole 10a for fixing the valve core moving plate 7, and an elastic pad 10b distributed between the valve core moving plate 7 and the swing bracket 10 is also provided at the insertion hole 10a. The swing bracket 10 drives the valve core moving plate 7 to move (similar to the operation of a windshield wiper). The sealing element 7b on the valve core moving plate 7 will seal different holes. The sealing element 7b dynamically compensates the gap between the contact surface (between the valve core moving plate 7 and the valve core stationary plate 8) when the valve core moving plate 7 rotates, preventing gas leakage. The elastic pad 10b is used to supplement the gap between the valve core moving plate 7 and the swing bracket 10, further improving the sealing performance of the valve core moving plate 7 for each hole and preventing gas leakage.

[0052] One end of the pin 11 is fixed with a sliding block 11a inserted into a guide groove. Above the sliding block 11a are symmetrically distributed upper inclined surfaces 11b on both sides, and below the sliding block 11a are symmetrically distributed lower inclined surfaces 11c on both sides. The other end of the pin 11 has a groove 11d, in which a shock-absorbing spring 12 is installed. The end of the shock-absorbing spring 12 away from the groove 11d abuts against the swing bracket 10. A return spring 13 is installed on the bottom surface of the cavity 5a, and the return spring 13 is fixedly connected to one end of the guide member 9. The two sets of upper inclined surfaces 11b and the two sets of lower inclined surfaces 11c form a wedge-shaped guide structure, reducing the friction between the pin 11 and the inner wall of the guide groove, making the sliding and rotation of the pin 11 smoother. The damping spring 12 is positioned between the pin 11 and the swing bracket 10. It reduces wear between the pin 11 and the swing bracket 10, absorbs high-frequency vibration energy, and the elastic force of the damping spring 12 keeps the pin 11 stably inserted in the guide groove, preventing it from slipping out. The return spring 13 assists the guide member 9 in resetting.

[0053] The height valve also includes a positioning sleeve 14. A connecting flange ring 14a is located above the positioning sleeve 14, and a thin-walled insertion ring 14b is located below it. A connecting hole 14c is located in the middle of the positioning sleeve 14, passing sequentially through the connecting flange ring 14a and the thin-walled insertion ring 14b along the axial direction of the positioning sleeve 14. The connecting flange ring 14a is fitted onto the outer periphery of the guide member 9 through the connecting hole 14c, and the thin-walled insertion ring 14b is inserted into the cavity 5a. The connecting flange ring 14a has several sets of screw holes arranged at intervals along its circumference. The valve sleeve 5 has a set of threaded positioning holes 5c corresponding to each set of screw holes. The connecting flange ring 14a has a guide hole 14e that is clearance-fitted with the upper end of the swing bracket 10. The circumferentially evenly distributed screw holes and the threaded positioning holes 5c of the valve sleeve 5 are precisely fixed, ensuring a detachable and fixed connection between the positioning sleeve 14 and the valve sleeve 5, as well as their concentricity. A guide hole 14e is added to the connecting flange ring 14a. When the swing bracket 10 moves, the guide hole 14e restricts its radial displacement.

[0054] A limiting ring 14d is provided on the outer periphery of the connecting flange ring 14a. The lower end of the airbag 2 is provided with a rolled edge that abuts against the lower end of the limiting ring 14d. The rolled edge is also fixedly connected to the lower end of the valve sleeve 5, and a steel wire ring 15 is provided inside the rolled edge. The limiting ring 14d limits the lower end of the airbag 2 to prevent the airbag 2 from moving up and down. The steel wire ring 15 is embedded in the rolled edge at the lower end of the airbag 2 and is fixed to the lower end of the valve sleeve 5 by a crimping process to form a rigid locking structure.

[0055] A buffer pad 16 is fitted around the outer periphery of the piston rod 4, distributed between the piston cylinder 3 and the upper cover assembly 1. An elastic gasket 17 is fixed above the piston cylinder 3 below the buffer pad 16. The buffer pad 16 is fitted around the outer periphery of the piston rod 4, between the piston cylinder 3 and the upper cover assembly 1, forming a first-level buffer layer. The elastic gasket 17 is used to position the buffer pad 16 as a second-level elastic support, preventing the piston cylinder 3 from having a large impact with the upper cover assembly 1.

[0056] An emergency stop 18 is fixed below the upper cover assembly 1 and distributed within the airbag 2. When the airbag 2 is compressed, the emergency stop 18 replaces the piston cylinder 3 and contacts the upper cover assembly 1 above the airbag 2, further protecting the piston, airbag 2, and upper cover assembly 1.

[0057] Working principle of this embodiment:

[0058] Road surface grade Maximum travel under bumpy conditions Valve port opening status Corresponding slide rail area Class A road surface Design height H±4 Inlet 6f closed, exhaust 6h closed Mid-airway 9c Class B road surface Stretching 4-18mm Air intake 6f closed, exhaust 6h slowly exhausting air Slow exhaust channel 9d Class C road surface and above Stretching > 18mm Intake port 6f closed, exhaust port 6h rapid exhaust Rapid exhaust channel 9e Class B road surface Compression 4-16mm Exhaust port closed for 6 hours, air inlet slowly inflated for 6 hours. Inflate and open the airway 9b Class C road surface and above Compression >16mm Exhaust port closed at 6h, air inlet rapidly inflated at 6f 9a Quick-inflation airway

[0059] Grade A road surface (smooth road condition)

[0060] Guide groove position: Pin 11 is located in the middle section air passage 9c, the swing bracket 10 is not swinging, and the valve core moving plate 7 is in the initial position.

[0061] The first air inlet 8a, the second air inlet 8b, the first exhaust 8c, and the second exhaust 8d are all sealed by the valve core moving plate 7.

[0062] No airflow passes through any of the air chambers, and airbag 2 maintains its current altitude.

[0063] Grade B road surface (moderate bumpiness)

[0064] (a) Tensile vibration (suspension tension 4-18mm)

[0065] Pin 11 enters the slow exhaust passage 9d, guide 9 moves upward, driving swing bracket 10 to rotate counterclockwise.

[0066] The valve core moving plate 7 rotates counterclockwise to open the first exhaust port 8c, while the second exhaust port 8d, the first air inlet port 8a, and the second air inlet port 8b remain closed. The first exhaust chamber 6c is connected to the exhaust channel 6g through the first exhaust connecting hole 6k, allowing for slow exhaust.

[0067] Airflow path: Airbag 2 → First exhaust port 8c → First exhaust chamber 6c → Exhaust channel 6g → Atmosphere. Slowly lower the height of airbag 2 to reduce upward amplitude and improve smoothness.

[0068] (b) Compression vibration (suspension compression 4-16mm)

[0069] Pin 11 enters the inflation opening air passage 9b, guide 9 moves down, driving the swing bracket 10 to rotate clockwise.

[0070] The valve core moving plate 7 rotates clockwise to open the first air inlet 8a, while the second air inlet 8b remains closed, and the first exhaust port 6h and the second exhaust port 6h remain closed.

[0071] The first air intake chamber 6a is connected to the air intake channel 6e through the first air intake connecting hole 6i, and is quickly inflated;

[0072] Airflow path: Air source → Inlet channel 6e → First intake chamber 6a → First intake port 8a → Airbag 2. Rapidly replenishing gas raises the height of airbag 2 and suppresses downward vibration.

[0073] Road surfaces of grade C or above (severe bumps)

[0074] (a) Tensile vibration (suspension tension > 18 mm)

[0075] Pin 11 enters the rapid exhaust passage 9e, guide 9 moves upward rapidly, driving swing bracket 10 to rotate leftward at a large angle.

[0076] The valve core moving plate 7 rotates counterclockwise to simultaneously open the first exhaust port 8c and the second exhaust port 8d, while the first air inlet port 8a and the second air inlet port 8b remain closed.

[0077] The second exhaust chamber 6d is connected to the exhaust channel 6g through the second exhaust connecting hole 6m, allowing for rapid pressure relief.

[0078] Airflow path: Airbag 2 → First exhaust port 8c → First exhaust chamber 6c + Second exhaust port 8d → Second exhaust chamber 6d → Exhaust channel 6g → Atmosphere. The dual exhaust ports work together to rapidly reduce the height of airbag 2, preventing suspension overload.

[0079] (b) Compression vibration (suspension compression > 16 mm)

[0080] Pin 11 enters the rapid inflation air passage 9a, guide 9 moves down rapidly, driving the swing bracket 10 to rotate to the right at a large angle.

[0081] The valve core moving plate 7 rotates clockwise to simultaneously open the first air inlet 8a and the second air inlet 8b, while the first exhaust port 6h and the second exhaust port 6h remain closed.

[0082] The second air intake chamber 6b is supplied with gas through the second air intake communication hole 6j;

[0083] Airflow path: Air source → Intake channel 6e → First intake chamber 6a + Second intake chamber 6b → First intake port 8a + Second intake port 8b → Airbag 2. Dual intake ports work together to inflate, quickly restoring suspension height and preventing bottoming out.

Claims

1. A height valve integrated cockpit suspension assembly, comprising an air shock absorber, a damping shock absorber, and a height valve. The air shock absorber includes a top cover assembly and an airbag. The damping shock absorber includes a piston cylinder and a piston rod linked to the piston cylinder. The upper end of the airbag is fixedly connected to the top cover assembly, and the middle part of the top cover assembly is sleeved on the upper outer periphery of the piston rod. The height valve includes a valve sleeve, a valve body, and a drive assembly. The valve sleeve has a cavity extending axially along the valve sleeve and a mounting groove on the side wall of the cavity. The valve sleeve is sleeved on the outer periphery of the piston cylinder through the cavity, and the valve sleeve is fixedly connected to the piston cylinder. The lower end of the airbag is fixed to the valve sleeve. The valve body includes a valve seat, a moving valve core, and a stationary valve core fixed on the valve seat. The moving valve core and the stationary valve core are opposite each other. The valve seat is fixed in a mounting groove, and a fluid discharge unit structure exists between the stationary valve core and the valve seat. The drive assembly includes a guide member and a swing bracket. The side wall of the guide member has a guide groove. One end of the guide member slides in the cavity and is elastically connected to the bottom end of the cavity. The middle part of the swing bracket is hinged to the valve seat. One end of the swing bracket is linked with the moving valve core, and the other end of the swing bracket is equipped with a pin. The pin is inserted into the guide groove. The characteristic feature is that: The guide groove comprises a rapid inflation air channel, an inflation opening air channel, a middle section air channel, a slow exhaust air channel and a rapid exhaust air channel arranged in sequence along the axial direction of the guide piece, the rapid inflation air channel, the inflation opening air channel, the middle section air channel, the slow exhaust air channel and the rapid exhaust air channel are arranged in sequence in the same direction along the circumferential direction of the guide piece, and the inflation opening air channel and the rapid inflation air channel and the slow exhaust air channel and the rapid exhaust air channel are respectively provided with a communication air channel, and each group of communication air channels is arranged obliquely.

2. The high valve integrated cockpit suspension assembly of claim 1, wherein: The rapid inflation air channel, the rapid exhaust air channel and the slow exhaust air channel are respectively in a straight line and parallel to the axial direction of the guide piece, the inflation opening air channel is arranged obliquely, and the inclination angle of the inflation opening air channel is smaller than the inclination angle of the communication air channel.

3. The high valve integrated cockpit suspension assembly of claim 2, wherein: The sliding length of the rapid inflation air channel is shorter than the sliding length of the rapid exhaust air channel, and the sliding length of the inflation opening air channel and the sliding length of the slow exhaust air channel are shorter than the sliding length of the rapid inflation air channel.

4. The high valve integrated cockpit suspension assembly of any of claims 1-3, wherein: The fluid discharge unit structure comprises four first air inlet cavities, second air inlet cavities, first air outlet cavities and second air outlet cavities which are not communicated with each other and are arranged between the valve core static sheet and the valve seat, the first air inlet cavities and the second air inlet cavities are arranged in an upper and lower manner, the first air outlet cavities and the second air outlet cavities are arranged in an upper and lower manner, and the first air outlet cavities and the second air outlet cavities are arranged on the same side of the first air inlet cavities and the second air inlet cavities; the valve seat is provided with an air inlet channel, an air inlet port communicated with the air inlet channel, an air outlet channel and an air outlet port communicated with the air outlet channel, the air inlet port is communicated with an air source, the air outlet port is communicated with the atmosphere, the air inlet channel and the air outlet channel are not communicated with each other, the first air inlet cavities are communicated with the air inlet channel by arranging first air inlet communication holes, the second air inlet cavities are communicated with the air inlet channel by arranging second air inlet communication holes, the first air outlet cavities are communicated with the air outlet channel by arranging first air outlet communication holes, and the second air outlet cavities are communicated with the air outlet channel by arranging second air outlet communication holes, the inner diameter of the first air inlet communication hole is larger than the inner diameter of the second air inlet communication hole, and the inner diameter of the first air outlet communication hole is smaller than the inner diameter of the second air outlet communication hole; the valve core static sheet is provided with a first air inlet hole communicated with the first air inlet cavity, a second air inlet hole communicated with the second air inlet cavity, a first air outlet hole communicated with the first air outlet cavity and a second air outlet hole communicated with the second air outlet cavity, and the valve core dynamic sheet is slidably arranged on the valve core static sheet and can close the first air inlet hole, the second air inlet hole, the first air outlet hole or the second air outlet hole.

5. The high valve integrated cockpit suspension assembly of claim 4, wherein: The middle part of the valve core dynamic sheet is provided with a sealing positioning hole, a sealing element is mounted at the sealing positioning hole, the lower end of the swing support is provided with a plug-in hole for fixing the valve core dynamic sheet, and an elastic pad distributed between the valve core dynamic sheet and the swing support is arranged at the plug-in hole.

6. The high valve integrated cockpit suspension assembly of claim 5, wherein: One end of the pin shaft is fixed with a sliding block inserted into the guide groove, the upper side of the sliding block is provided with symmetrical upper inclined surfaces distributed on both sides, the lower side of the sliding block is provided with symmetrical lower inclined surfaces distributed on both sides; the other end of the pin shaft is provided with a groove, the damping spring is installed in the groove, the end of the damping spring away from the groove is in abutment with the swing support; the bottom surface of the cavity is installed with the return spring, the return spring is fixedly connected with one end of the guide piece.

7. The high valve integrated cockpit suspension assembly of any of claims 1-3, wherein: The height valve further comprises a positioning sleeve, the upper side of the positioning sleeve is provided with a connecting flange ring, the lower side is provided with a thin-walled plug-in ring, the middle part of the positioning sleeve is provided with a connecting hole which penetrates the connecting flange ring and the thin-walled plug-in ring along the axial direction of the positioning sleeve, the connecting flange ring is sleeved on the outer periphery of the guide piece through the connecting hole, the thin-walled plug-in ring is inserted into the cavity, a plurality of groups of screw holes are arranged on the connecting flange ring, the valve sleeve is provided with a group of threaded positioning holes corresponding to each group of screw holes, the connecting flange ring is provided with a guide hole matched with the upper end of the swing support.

8. The high valve integrated cockpit suspension assembly of claim 7, wherein: The outer periphery of the connecting flange ring is provided with a limiting ring strip, the lower end of the air bag is provided with a curled edge abutting against the lower end of the limiting ring strip, the curled edge is fixedly connected with the lower end of the valve sleeve, a steel wire ring is arranged in the curled edge.

9. The high valve integrated cockpit suspension assembly of claim 7, wherein: The outer periphery of the piston rod is sleeved with a buffer pad distributed between the piston cylinder and the upper cover assembly, the lower side of the buffer pad is provided with an elastic gasket fixedly connected with the upper side of the piston cylinder.

10. The high valve integrated cockpit suspension assembly of claim 9, wherein: The lower side of the upper cover assembly is fixed with an emergency stop distributed in the air bag.

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