Quick lift and drop air valve

Abstract

The utility model relates to a kind of speed rising and falling air valves, the speed rising and falling air valve including valve seat, valve rod, rotary disc and elastic element, the valve seat is provided with valve chamber, the valve rod can be axially reciprocated in the valve chamber, the upper end of the valve rod is from the upper end of the valve seat, three sealing rings are provided on the inner wall of the valve chamber, first airflow cavity and second airflow cavity are spaced out in the valve chamber, three gas path interfaces are provided on the valve seat and are respectively communicated with the first airflow cavity, second airflow cavity and outside, recess is provided on the outer wall of the valve rod, valve rod is inserted to different depth in valve chamber, recess is respectively communicated with first airflow cavity and second airflow cavity, the second airflow cavity and outside.According to the technical scheme provided, the seat can be quickly lowered from the height in use to the lowest height, facilitating the driver to get on and off the vehicle, and when driving is needed again, the seat can be quickly restored from the lowest height state to the original memory height position.

Description

Technical Field

[0001] This utility model belongs to the field of automotive seat technology, specifically relating to a rapid increase and decrease air valve. Background Technology

[0002] Current car driver seats are typically equipped with pneumatic height adjustment devices to improve ride comfort and provide dynamic shock absorption. This device not only adjusts the seat height according to the driver's needs but also automatically inflates or deflates during driving to mitigate the impact of bumpy road conditions and maintain a stable seat height.

[0003] Traditional structures mainly include airbags, articulated rods, drive mechanisms, and switching valves. The airbag, as the primary supporting element, is supplied with air by an onboard air pump or reservoir. Inflation and deflation are controlled by opening and closing the switching valve, thus changing the seat height. The adjustment process has two modes: manual and automatic. When the driver gets in the vehicle, they manually adjust the seat to the desired position; while the vehicle is in motion, the drive mechanism automatically controls the adjustment to maintain the preset height.

[0004] However, existing technology suffers from insufficient response speed. For example, when the driver is preparing to get out of the car, the seat cannot quickly lower to its lowest position; upon restarting, it cannot quickly return to the previous memory height, requiring manual readjustment, which affects ease of use and user experience. Utility Model Content

[0005] In order to solve all or some of the above problems, the purpose of this utility model is to provide a rapid rise and fall air valve that can quickly adjust the height of the seat, realize rapid rise and fall, and improve the ease of operation of the seat height adjustment device.

[0006] This utility model provides a rapid rise and fall air valve, including a valve seat, a valve stem, a rotating disk, and an elastic element;

[0007] The valve seat is provided with a valve chamber, the valve stem can move axially back and forth in the valve chamber, the upper end of the valve stem extends from the upper end of the valve seat, three sealing rings are provided on the inner wall of the valve chamber, a first airflow chamber and a second airflow chamber are separated in the valve chamber, and the valve seat is provided with three air passage interfaces that are respectively connected to the first airflow chamber, the second airflow chamber and the outside.

[0008] The outer wall of the valve stem is provided with a groove, and the valve stem is inserted into the valve chamber to different depths. The grooves are respectively connected to the first airflow chamber and the second airflow chamber, the second airflow chamber and the outside.

[0009] The rotary disk is disposed in the valve chamber and below the valve stem;

[0010] The elastic element is disposed in the valve chamber and the upper end of the elastic element pushes against the rotating disk. A limit structure is provided on the inner wall of the valve seat. Pressing the valve stem drives the rotating disk to slide in the limit structure. The rotating disk, the elastic element and the limit structure cooperate to keep the valve stem at different depths in the valve chamber.

[0011] The bottom of the valve stem has several first inclined surfaces evenly distributed, and the side wall has several radially extending first guide blocks evenly distributed. The top of the rotating disk has several second inclined surfaces evenly distributed, and the side wall has several radially extending second guide blocks evenly distributed. When the valve stem is pressed, the first inclined surfaces drive the second inclined surfaces to move and, under the elastic force of the elastic element, drive the rotating disk to slide in the limiting structure.

[0012] Preferably, the limiting structure includes several sets of continuous third inclined surfaces, fourth inclined surfaces, and guide grooves evenly distributed together. A limiting groove is provided between the third inclined surfaces and the fourth inclined surfaces. The first guide block slides in the guide groove, and the second guide block slides between the limiting groove and the guide groove.

[0013] Preferably, a fifth inclined plane is provided between adjacent first inclined planes, the fifth inclined plane being continuously arranged facing the first inclined plane, the fifth inclined plane having the same inclination length as the first inclined plane, or the inclination length of the fifth inclined plane being greater than the inclination length of the first inclined plane.

[0014] Preferably, a first connecting rod is provided in the middle of the valve stem, and a second connecting rod is provided in the middle of the rotating disk. A central hole is provided in the middle of the first connecting rod, and a step is provided on the inner wall of the central hole. The second connecting rod is inserted into the central hole, and a pawl is provided at the upper end of the second connecting rod. The pawl cooperates with the step in the central hole, allowing the rotating disk and the valve stem to rotate relative to each other and move axially a predetermined distance.

[0015] Preferably, the rotating disk has a central groove in the middle, the upper end of the elastic element extends into the interior of the central groove to push the rotating disk, and the lower end of the elastic element abuts against the bottom of the valve chamber.

[0016] Preferably, a sealing groove is provided on the inner wall of the valve chamber to install the sealing ring, or a support ring is provided between adjacent sealing rings.

[0017] Preferably, the air passage interfaces are, from top to bottom, an air inlet, an airbag connection port, and an exhaust port. The air inlet is connected to the first airflow chamber, the airbag connection port is connected to the second airflow chamber, and the exhaust port is connected to the outside.

[0018] The air inlet and the airbag connection port extend radially from the side wall of the valve seat.

[0019] As can be seen from the above technical solution, the rapid rise and fall air valve provided by this utility model has the following advantages:

[0020] The rapid rise and fall air valve of this utility model reconstructs an inflation and deflation path for the airbag. Without affecting the function of the original seat height adjustment device, it can quickly inflate and deflate the airbag, and can quickly lower the seat from the height in use to the lowest height to facilitate the driver to get in and out of the vehicle. When it is necessary to drive again, the seat can be quickly restored from the lowest height to the original memory height position.

[0021] The rapid rise and fall air valve of this invention integrates all components into a single module, making installation convenient and assembly highly efficient.

[0022] The rapid rise and fall air valve of this utility model has a reasonable structural design, is quick and agile to start, and has high operational reliability. Attached Figure Description

[0023] Figure 1 This is a front view of the speed-up and speed-down valve in an embodiment of this utility model;

[0024] Figure 2 for Figure 1 A sectional view along the middle AA;

[0025] Figure 3 This is a perspective view of the speed-up and speed-down air valve in an embodiment of this utility model;

[0026] Figure 4 This is a perspective view of the valve stem of the speed-up and speed-down valve in an embodiment of this utility model.

[0027] Figure 5 This is a front view of the valve stem of the speed-up and speed-down valve in this embodiment of the present invention;

[0028] Figure 6 This is a perspective view of the rotating disk of the speed-up and speed-down air valve in an embodiment of this utility model;

[0029] Figure 7 This is a perspective view of the rotating disk of the speed-up and speed-down air valve in an embodiment of this utility model;

[0030] Figure 8 This is a perspective view of the valve seat of the speed-up and speed-down air valve in an embodiment of this utility model.

[0031] Figure 9 This is a cross-sectional view of the valve seat of the speed-up and speed-down air valve in this embodiment of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Valve stem; 1-1. First connecting rod; 1-2. First guide block; 1-3. First inclined surface; 1-4. Center hole; 1-5. Fifth inclined surface; 1-6. Groove; 1-7. Step; 2. Rotary disk; 2-1. Second connecting rod; 2-2. Claw; 2-3. Second guide block; 2-4. Second inclined surface; 2-5. Center groove; 3. Valve seat; 3-1. Protrusion; 3-2. Guide groove; 3-3. Third inclined surface; 3-4. Fourth inclined surface; 3-5. Protrusion; 3-6. Slot; 3-7. Air inlet; 3-8. Airbag outlet; 3-9. Exhaust outlet; 3-10. Locking hole; 4. Pressure cap; 5. Spring; 6. End cap; 7. First sealing ring; 8. Second sealing ring; 9. Third sealing ring; 10. Base support. Detailed Implementation

[0034] To better understand the purpose, structure, and function of this utility model, a rapid rise and fall air valve of this utility model will be described in further detail below with reference to the accompanying drawings. For example... Figure 1 , Figure 2 , Figure 3 The above is Embodiment 1 of the present invention, which discloses a rapid rise and fall air valve, including a valve seat 3, a valve stem 1, a rotating disk 2 and an elastic element;

[0035] A valve chamber is provided inside the valve seat 3. The valve stem 1 can move axially back and forth inside the valve chamber. The upper end of the valve stem 1 extends from the upper end of the valve seat 3. Three sealing rings are provided on the inner wall of the valve chamber. The valve chamber is divided into a first airflow chamber and a second airflow chamber. The valve seat 3 is provided with three air passage interfaces that connect the first airflow chamber, the second airflow chamber and the outside respectively.

[0036] The outer wall of the valve stem 1 is provided with grooves 1-6. The valve stem 1 is inserted into the valve chamber to different depths. The grooves 1-6 are respectively connected to the first airflow chamber and the second airflow chamber, the second airflow chamber and the outside.

[0037] When grooves 1-6 connect the first and second airflow chambers, the airbag can be rapidly inflated. When grooves 1-6 connect the second airflow chamber to the outside, the airbag can be rapidly deflated. The outside can be the atmosphere or a recovery storage tank. The rapid rise and fall valve in this embodiment reconstructs an inflation and deflation path for the airbag, enabling rapid raising and lowering of the car seat. The reciprocating movement of valve stem 1 can be manually driven, such as by manual pressing, or automatically driven, such as by an electric motor.

[0038] like Figure 2As shown, the three sealing rings are the first sealing ring 7, the second sealing ring 8, and the third sealing ring 9. Because the valve chamber wall, valve stem 1, and the three sealing rings are tightly fitted, the first airflow chamber and the second airflow chamber, as well as the second airflow chamber and the outside, will be isolated when the groove 1-6 does not participate in the connection. When the groove 1-6 crosses the second sealing ring 8, the first airflow chamber and the second airflow chamber are connected through the groove 1-6, and the second airflow chamber is still isolated from the outside. When the groove 1-6 crosses the third sealing ring 9, the second airflow chamber is connected to the outside through the groove 1-6, and the first airflow chamber and the second airflow chamber are restored to the isolated state.

[0039] The sealing rings are made of rubber and can have a suitable cross-section, such as circular, rectangular, or grooved. At least the diameter (or height) of the cross-section of the second sealing ring 8 and the third sealing ring 9 must be less than the length of the grooves 1-6 to ensure that the grooves 1-6 do not affect the connection between the separated chambers. The length of the grooves 1-6 must be at least less than the height of the second airflow chamber to prevent simultaneous connection between the first airflow chamber, the second airflow chamber, and the outside environment.

[0040] like Figure 3 As shown, the air passage interfaces from top to bottom are air inlet 3-7, airbag connection port 3-8, and exhaust port 3-9. Air inlet 3-7 is connected to the first airflow chamber, airbag connection port 3-8 is connected to the second airflow chamber, and exhaust port 3-9 is connected to the outside. The air inlet 3-7 connects to the air pump or air tank installed in the car, the airbag connection 3-8 connects to the airbag under the car seat, and the exhaust port 3-9 connects to the atmosphere. When the first airflow chamber and the second airflow chamber are connected through the groove 1-6, the air inlet 3-7 and the airbag connection 3-8 are connected. At this time, the air pump or air tank can inflate the airbag, thereby quickly raising the car seat to the predetermined maximum height. When the second airflow chamber is connected to the outside through the groove 1-6, the airbag connection 3-8 and the exhaust port 3-9 are connected. At this time, the air pump or air tank cannot inflate the airbag. The airbag is subjected to the pressure of the car seat, and the gas in it will be quickly discharged to the atmosphere through the exhaust port 3-9, thereby quickly lowering the car seat to the predetermined minimum height.

[0041] In this embodiment, the rotating disk 2 is disposed inside the valve chamber and below the valve stem 1. An elastic element is disposed inside the valve chamber, with its upper end pushing against the valve stem 1. A limiting structure is provided on the inner wall of the valve seat 3. Pressing the valve stem 1 drives the rotating disk 2 to slide within the limiting structure. The rotating disk 2, the elastic element, and the limiting structure cooperate to hold the valve stem 1 at different depths within the valve chamber. The elastic element can be a spring, a silicone column, or other suitable elastic element; a cylindrical spring 5 is preferred.

[0042] A button can be installed at the upper end of the valve stem 1 to meet the need for manual pressing, or it can be connected to an electric motor to meet the need for automatic drive. The valve seat 3 serves to assemble the valve stem 1, valve chamber, rotating disk 2, and spring 5, and also provides a mounting structure for the rapid rise and fall valve, enabling the rapid rise and fall valve to be installed and fixed in the automobile.

[0043] like Figure 4 , Figure 6 As shown, the bottom of the valve stem 1 has several first inclined surfaces 1-3 evenly distributed, and the side wall has several first guide blocks 1-2 evenly distributed radially extending. The top of the rotating disk 2 has several second inclined surfaces 2-4 evenly distributed, and the side wall has several second guide blocks 2-3 evenly distributed radially extending. When the valve stem 1 is pressed, the first inclined surfaces 1-3 drive the second inclined surfaces 2-4 to move and drive the rotating disk 2 to slide in the limiting structure under the elastic force of the spring 5.

[0044] The first inclined surface 1-3 and the second inclined surface 2-4 have the same inclination angle, enabling face-to-face driving. Their lengths can be the same, or the inclination length of the first inclined surface 1-3 can be less than that of the second inclined surface 2-4 to prevent the top of the second inclined surface 2-4 of the rotating disk 2 from contacting the lower end of the first inclined surface 1-3 of the valve stem 1 during rotation, thus avoiding jamming. The radial extension lengths of the first guide block 1-2 and the second guide block 2-3 are the same.

[0045] To optimize the structure, an inclined plane was also set between adjacent first inclined planes 1-3, i.e. Figure 4 The fifth inclined surface 1-5 shown can be designed as a continuous opposite side to the first inclined surface 1-3, but with different inclination directions. The fifth inclined surface 1-5 has the same or greater inclination length as the first inclined surface 1-3. The fifth inclined surface 1-5 facilitates the sliding of the second guide block 2-3 from behind the first inclined surface 1-3, which is beneficial for the rotation of the rotating disk 2. Furthermore, the fifth inclined surface 1-5 prevents the top of the second inclined surface 2-4 of the rotating disk 2 from contacting the lower end of the first inclined surface 1-3 of the valve stem 1 during rotation, thus avoiding jamming. This ensures that during airbag inflation, the second inclined surface 2-4 and the first inclined surface 1-3 smoothly re-engage, allowing the first guide block 1-2 and the second guide block 2-3 to slide again in the guide groove 3-3.

[0046] In a preferred embodiment, the bottom of the valve stem 1 has eight first inclined surfaces 1-3 evenly distributed, and four radially extending first guide blocks 1-2 are evenly distributed on the side wall. Four of the first inclined surfaces 1-3 correspond to the four first guide blocks 1-2 and extend to their lower ends, while the other four are positioned between the first guide blocks 1-2. Additionally, the bottom of the valve stem 1 has eight fifth inclined surfaces 1-5 evenly distributed, which are symmetrically continuous with the first inclined surfaces 1-3. The fifth inclined surfaces 1-5 and the first inclined surfaces 1-3 have the same inclination length, the same inclination angle, and are axially symmetrical in their inclination directions. The top of the rotating disk 2 has four second inclined surfaces 2-4 evenly distributed, and four radially extending second guide blocks 2-3 are evenly distributed on the side wall. The second inclined surfaces 2-4 are positioned at the upper ends of the second guide blocks 2-3. The top edges of the second inclined surfaces 2-4 can be rounded to facilitate the fit between the second inclined surfaces 2-4 and the limiting structure.

[0047] like Figure 9 As shown, the limiting structure includes several sets of continuous third inclined surfaces 3-3, fourth inclined surfaces 3-4 and guide grooves 3-2 evenly distributed. A limiting groove is provided between the third inclined surface 3-3 and the fourth inclined surface 3-4. The first guide block 1-2 slides in the guide groove 3-2, and the second guide block 2-3 slides between the limiting groove and the guide groove 3-2.

[0048] In this design, the downward tilt of the third inclined plane 3-3 is less than the downward tilt of the fourth inclined plane 3-4. The rotation angle of the rotating disk 2 when the second guide block 2-3 enters the limiting groove from the guide groove 3-2 via the fourth inclined plane 3-4 is greater than the rotation angle of the rotating disk 2 when the second guide block 2-3 leaves the limiting groove and enters the guide groove 3-2 via the third inclined plane 3-3. For example, when the second guide block 2-3 enters the limiting groove from the guide groove 3-2 via the fourth inclined plane 3-4, the airbag is in a deflated state; when the second guide block 2-4 leaves the limiting groove and enters the guide groove 3-2 via the third inclined plane 3-3, the airbag is in an inflated state. Therefore, when inflating, the valve stem 1 needs a shorter downward movement distance compared to when deflating, allowing the occupant to restore the airbag to its original memory height with a shorter pressing stroke, reducing the occupant's pressing force and improving the user experience. Furthermore, the downward tilt of the third inclined plane 3-3 is less than the downward tilt of the fourth inclined plane 3-4, ensuring that the valve stem 1 drives the rotating disk 2 to rotate normally and avoiding jamming.

[0049] The third inclined surface 3-3 and the fourth inclined surface 3-4 can be formed by protrusions on the inner wall of the valve seat 3. The lower edges of the third inclined surface 3-3 and the fourth inclined surface 3-4 can be rounded to facilitate the second guide block 2-3 passing through this point.

[0050] In a preferred embodiment, the limiting structure includes four sets of continuous third inclined surfaces 3-3, fourth inclined surfaces 3-4, and guide grooves 3-2 evenly distributed. The guide grooves 3-2 extend axially, and the first guide block 1-2 always slides in the guide grooves 3-2. When the valve stem 1 presses down on the rotating disk 2, the first inclined surface 1-3 squeezes the second inclined surface 2-4, generating not only downward pressure but also circumferential rotational force. When the second guide block 2-3 passes the lower end of the fourth inclined surface 3-4, the second guide block 2-3 slides upward along the fourth inclined surface 3-4 and enters the lower part of the limiting groove. At this time, the pressing force of the valve stem 1 disappears, and the second guide block 2-3 enters the limiting groove under the elastic force of the reset element. When the groove 1-6 of the valve stem 1 crosses the third sealing ring 11, the second airflow chamber and the outside are connected through the groove 1-6 to achieve rapid exhaust. When valve stem 1 presses down on rotating disk 2 again, the first inclined surface 1-3 squeezes the second inclined surface 2-4, and the second guide block 2-3 slides down along the side wall of the limiting groove. When the second guide block 2-3 passes the lower end of the third inclined surface 3-3, the second guide block 2-3 slides up along the third inclined surface 3-3 and enters the lower part of the guide groove 3-2. At this time, the pressing force of valve stem 1 disappears, and the second guide block 2-3 enters the guide groove 3-2 under the elastic force of the reset element. Rotating disk 2 rises, and when the groove 1-6 of valve stem 1 crosses the second sealing ring 8, the first airflow chamber and the second airflow chamber are connected through the groove 1-6 to achieve rapid inflation.

[0051] When valve stem 1 presses down on rotating disk 2 for the third time, the first inclined surface 1-3 presses against the second inclined surface 2-4, and the first guide block 1-2 and the second guide block 2-3 move downwards simultaneously, driven by circumferential rotational force. When the second guide block 2-3 reaches the lower end of the fourth inclined surface 3-4, it slides upwards along the fourth inclined surface 3-4 and can re-enter the limiting groove to achieve rapid exhaust. It should be noted that in the actual use of the rapid rise and fall air valve, the second guide block 2-3 can initially be located in the limiting groove or initially in the guide groove 3-2, switching between the limiting groove and the guide groove 3-2 as needed.

[0052] In this embodiment, viewed from the top view of the rapid-rise and rapid-fall valve, the rotating disk 2 rotates clockwise during its sliding motion within the limiting structure. If the inclination directions of the second inclined surface 2-4, the third inclined surface 3-3, and the fourth inclined surface 3-4 are changed, the rotating disk 2 can also rotate counterclockwise. Since the direction of the circumferential rotational force applied by the first inclined surface 1-3 to the second inclined surface 2-4 is fixed (e.g., clockwise or counterclockwise), the rotation direction of the rotating disk 2 within the limiting structure remains fixed during the cyclic pressing of the valve stem 1 to drive the rotating disk 2 to rotate.

[0053] like Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, a first connecting rod 1-1 is provided in the middle of the valve stem 1, and a second connecting rod 2-1 is provided in the middle of the rotating disk 2. A central hole 1-4 is provided in the middle of the first connecting rod 1-1, and a step 1-7 is provided on the inner wall of the central hole 1-4. The second connecting rod 2-1 is inserted into the central hole 1-4, and a pawl 2-2 is provided at the upper end of the second connecting rod 2-1. The pawl 2-2 cooperates with the step 1-7 in the central hole 1-4, allowing the rotating disk 2 and the valve stem 1 to rotate relative to each other and move axially a predetermined distance (this distance is the axial driving distance between the first inclined surface 1-3 and the second inclined surface 2-4). However, the two will not separate. When the rotating disk 2 is limited by the limiting structure, the valve stem 1 will also be limited at the same time. The valve stem 1 cannot move arbitrarily, which can prevent the position of the groove 1-6 from moving arbitrarily and changing the ongoing communication state.

[0054] Because the first connecting rod 1-1 is hollow, the depth of the groove 1-6 must be less than the wall thickness of the first connecting rod 1-1 to avoid penetrating the side wall of the first connecting rod 1-1.

[0055] The upper end of the first connecting rod 1-1 can be provided with a snap-fit ​​hole or thread to facilitate the installation of buttons or connection with a motor.

[0056] like Figure 6 , Figure 7 As shown, a central groove 2-5 is provided in the middle of the rotating disk 2, and an elastic element, which can be a spring 5, is provided in the valve chamber. The upper end of the spring 5 extends into the interior of the central groove 2-5 to push the rotating disk 2, and the lower end of the spring 5 rests against the bottom of the valve chamber. A spring seat is provided at the bottom of the valve chamber to fix the spring 5. The spring seat can have a protruding or grooved structure.

[0057] In order to reduce the frictional resistance between the spring 5 and the rotating disk 2 and facilitate the rotation of the rotating disk 2, a pressure cap 4 can be set at the upper end of the spring 5. The pressure cap 4 can be T-shaped or inverted groove-shaped. The pressure cap 4 can rotate relative to the rotating disk 2 to avoid the spring 5 directly contacting the rotating disk 2.

[0058] like Figure 2 , Figure 9 As shown, an end cap 6 is provided at the upper end of the valve chamber, and the valve stem 1 passes through the end cap 6 and is inserted into the valve chamber. The end cap 6 serves to isolate dust from the valve chamber and provide a certain degree of sealing, while also guiding the valve stem 1.

[0059] In a preferred embodiment, two or more grooves 1-6 are provided on the outer wall of the valve stem 1 to ensure reliable communication of the isolation chamber, and the two or more grooves 1-6 are at the same height on the outer wall of the valve stem 1.

[0060] To secure the sealing ring, a sealing groove is provided on the inner wall of the valve chamber to hold the sealing ring in place, preventing it from moving with the valve stem 1. Alternatively, a support ring can be provided between adjacent sealing rings to maintain their position and prevent movement with the valve stem 1. The thickness of the support ring needs to be smaller than the cross-sectional diameter (or cross-sectional height) of the sealing ring; that is, the inner diameter of the support ring should be larger than the inner diameter of the sealing ring to facilitate the vertical movement of the valve stem 1. The inner wall of the support ring should not contact the cylindrical surface of the valve stem 1. Furthermore, a step needs to be provided on the inner wall of the valve chamber below the third sealing ring 9, such as... Figure 2 As shown, the step can prevent the third sealing ring 9 from moving downwards, and the end cap 6 at the upper end of the valve chamber can prevent the first sealing ring 7 from moving upwards. Due to the upper and lower limiting effect of the end cap 6 and the step, the three sealing rings can be kept in the predetermined position by setting two support rings, and will not move with the valve stem 1.

[0061] like Figure 3 As shown, the air passage interfaces from top to bottom are air inlet 3-7, airbag connection port 3-8, and exhaust port 3-9. Among the three air passage interfaces, at least air inlet 3-7 and airbag connection port 3-8 extend radially from the side wall of valve seat 3, and exhaust port 3-9 can extend radially from the side wall of valve seat 3, or it can not extend and is just an air hole. Figure 3 The three air inlets are pagoda-shaped, making them difficult to separate from the pipes when connecting them. Inlet 3-7 connects to the car's air pump or air tank via a pipe, airbag connector 3-8 connects to the airbag via a pipe, and exhaust port 3-9 can be emptied directly or via a pipe.

[0062] like Figure 2 As shown, the inner wall of the valve seat 3 is provided with an inwardly protruding step to limit the valve stem 1, thereby restricting the upward movement height of the valve stem 1. When the valve stem 1 moves to the step, it cannot disengage from the valve seat 3. At this time, the spring 5 still exerts elastic force on the valve stem 1 and the rotating disk 2, and these two components will not shake.

[0063] In this embodiment, the side wall of the valve seat 3 is provided with a connecting structure. The valve seat 3 is installed and fixed through the connecting structure, and the rapid-rise and rapid-deceleration valve can be installed and fixed inside the vehicle through the connecting structure. The connecting structure includes one or more of the following: mounting plate, ridge, protrusion, and groove. Figure 8 As shown, the valve seat 3 has an annular protrusion 3-1, a wedge-shaped protrusion 3-5, and an annular groove 3-6 on its side wall. These connection structures are designed according to the installation environment.

[0064] like Figure 2As shown, a base support 10 is provided at the lower end of the valve seat 3 to support the spring 5. The base support 10 and the valve seat 3 can be detachably combined, for example, by means of snap-fit ​​or threaded connection, to facilitate the assembly of the valve stem 1, rotating disk 2, and spring 5. The valve stem 1, rotating disk 2, and spring 5 can be inserted into the valve seat 3 through the lower opening of the valve seat 3, and then the base support 10 can be combined to realize the assembly of the rapid rise and rapid fall air valve.

[0065] In this embodiment, the rapid inflation and deflation valve reconstructs an inflation and deflation path for the airbag. Without affecting the function of the original seat height adjustment device, it can quickly inflate and deflate the airbag, and can quickly lower the seat from the height in use to the lowest height to facilitate the driver getting in and out of the vehicle. When it is necessary to drive again, the seat can be quickly restored from the lowest height to the original memory height position.

[0066] In this embodiment, the rapid rise and fall air valve integrates all components into a single module, making installation convenient and assembly highly efficient.

[0067] The rapid rise and fall air valve in this embodiment has a reasonable structural design, is quick and agile to start, and has high operational reliability.

[0068] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0069] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0070] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0071] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not 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 or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A rapid-increase and rapid-decrease air valve, characterized in that, Includes valve seat, valve stem, rotating disk, and elastic element; The valve seat is provided with a valve chamber, the valve stem can move axially back and forth in the valve chamber, the upper end of the valve stem extends from the upper end of the valve seat, three sealing rings are provided on the inner wall of the valve chamber, a first airflow chamber and a second airflow chamber are separated in the valve chamber, and the valve seat is provided with three air passage interfaces that are respectively connected to the first airflow chamber, the second airflow chamber and the outside. The outer wall of the valve stem is provided with a groove, and the valve stem is inserted into the valve chamber to different depths. The grooves are respectively connected to the first airflow chamber and the second airflow chamber, the second airflow chamber and the outside. The rotary disk is disposed in the valve chamber and below the valve stem; The elastic element is disposed in the valve chamber and the upper end of the elastic element pushes against the rotating disk. A limit structure is provided on the inner wall of the valve seat. Pressing the valve stem drives the rotating disk to slide in the limit structure. The rotating disk, the elastic element and the limit structure cooperate to keep the valve stem at different depths in the valve chamber. The bottom of the valve stem has several first inclined surfaces evenly distributed, and the side wall has several radially extending first guide blocks evenly distributed. The top of the rotating disk has several second inclined surfaces evenly distributed, and the side wall has several radially extending second guide blocks evenly distributed. When the valve stem is pressed, the first inclined surfaces drive the second inclined surfaces to move and, under the elastic force of the elastic element, drive the rotating disk to slide in the limiting structure.

2. The rapid rise and fall air valve according to claim 1, characterized in that, The limiting structure includes several sets of continuous third inclined surfaces, fourth inclined surfaces, and guide grooves evenly distributed. A limiting groove is provided between the third and fourth inclined surfaces. The first guide block slides in the guide groove, and the second guide block slides between the limiting groove and the guide groove.

3. The rapid rise and fall air valve according to claim 2, characterized in that, A fifth inclined plane is provided between adjacent first inclined planes. The fifth inclined plane is continuously arranged facing the first inclined plane. The fifth inclined plane has the same inclination length as the first inclined plane, or the inclination length of the fifth inclined plane is greater than that of the first inclined plane.

4. The rapid rise and fall air valve according to claim 1, characterized in that, A first connecting rod is provided in the middle of the valve stem, and a second connecting rod is provided in the middle of the rotating disk. A central hole is provided in the middle of the first connecting rod, and a step is provided on the inner wall of the central hole. The second connecting rod is inserted into the central hole, and a pawl is provided at the upper end of the second connecting rod. The pawl cooperates with the step in the central hole, allowing the rotating disk and the valve stem to rotate relative to each other and move axially a predetermined distance.

5. The rapid rise and fall air valve according to claim 1, characterized in that, The rotating disk has a central groove in the middle, the upper end of the elastic element extends into the interior of the central groove and pushes against the rotating disk, and the lower end of the elastic element abuts against the bottom of the valve chamber.

6. The rapid rise and fall air valve according to claim 1, characterized in that, The valve chamber has a sealing groove on its inner wall for installing the sealing ring, or a support ring is provided between adjacent sealing rings.

7. The rapid rise and fall air valve according to claim 1, characterized in that, The air passage interfaces, from top to bottom, are an air inlet, an airbag connection port, and an exhaust port. The air inlet is connected to the first airflow chamber, the airbag connection port is connected to the second airflow chamber, and the exhaust port is connected to the outside. The air inlet and the airbag connection port extend radially from the side wall of the valve seat.

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