A rapid rise and fall valve

Abstract

This utility model relates to a rapid raising and lowering valve, which includes a valve body, a valve stem, a valve seat, a rotating disk, an elastic element, and a pressing rod. The valve body contains a valve chamber, and the valve stem can reciprocate axially within the valve chamber. Three sealing rings are provided on the inner wall of the valve chamber, creating a first airflow chamber and a second airflow chamber within it. The valve body has three air passage interfaces connecting the first airflow chamber, the second airflow chamber, and the outside. A groove is provided on the outer wall of the valve stem, allowing the valve stem to be inserted into the valve chamber to different depths. The groove connects the first airflow chamber, the second airflow chamber, and the outside. According to the technical solution provided by this utility model, the seat can be quickly lowered from its operating height to its lowest possible height, facilitating driver entry and exit. When driving resumes, the seat can be quickly restored to its original memory height position.

Description

Technical Field

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

[0002] In automotive pneumatic seat height adjustment systems, seat height is typically achieved by controlling the air pressure within the airbag. Existing devices generally employ components such as an airbag, a drive mechanism, and a switching valve to achieve manual or automatic seat height adjustment through the inflation and deflation of gas.

[0003] When a driver first sits in the seat, they need to manually adjust it to a suitable height. While the vehicle is in motion, the system automatically adjusts to maintain the set height. However, when it is necessary to quickly lower the seat height (when getting out of the car) or quickly restore it to the original height (when getting back in the car), the traditional valve structure has problems with small air passages and slow exhaust or inflation speeds, resulting in sluggish seat height adjustment response, inconvenient operation, and a poor user experience.

[0004] Furthermore, existing valves are not quick enough to switch between inflation and deflation states, which can easily cause pressure fluctuations and affect adjustment stability. Therefore, it is necessary to design a new type of rapid-rise and rapid-fall valve structure, which improves the speed and responsiveness of seat height adjustment by optimizing the air passage and valve core switching method, thereby improving operational efficiency and comfort. 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 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 valve, which includes a valve body, a valve stem, a valve seat, a rotating disk, an elastic element, and a pressing rod;

[0007] The valve body is disposed within the valve seat, and a valve chamber is disposed within the valve body. The valve stem can move axially back and forth within the valve chamber. Three sealing rings are disposed on the inner wall of the valve chamber. A first airflow chamber and a second airflow chamber are separated within the valve chamber. The valve body 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 rotating disk is disposed at the upper end of the valve seat, and the rotating disk presses against the upper end of the valve stem;

[0010] The elastic element is disposed in the valve chamber and the upper end of the elastic element pushes against the valve stem. A limit structure is provided on the inner wall of the valve seat. Pressing the pressing rod 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 pressing rod is disposed at the upper end of the valve seat. The bottom of the pressing rod has a plurality of first inclined surfaces evenly distributed, and the side wall has a plurality of radially extending first guide blocks evenly distributed. The top of the rotating disk has a plurality of second inclined surfaces evenly distributed, and the side wall has a plurality of radially extending second guide blocks evenly distributed. When the pressing rod is pressed, the first inclined surfaces drive the second inclined surfaces to move and drive the rotating disk to slide in the limiting structure under the elastic force of the elastic element.

[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, and 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 pressing rod, 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 pressing rod to rotate relative to each other and move axially a predetermined distance.

[0015] Preferably, the valve stem has a central groove in the middle, the upper end of the elastic element extends into the central groove to push the valve stem, 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, an opening is provided on one side of the valve seat, and the air passage interface extends from the opening;

[0018] 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.

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

[0020] The rapid rise and fall 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 valve of this invention integrates all components into a single module, making installation convenient and assembly highly efficient.

[0022] The rapid rise and fall 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 rapid rise and fall valve in an embodiment of this utility model;

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

[0025] Figure 3 This is a perspective view of the rapid rise and fall valve in an embodiment of this utility model;

[0026] Figure 4 This is a perspective view of the push rod of the rapid rise and fall valve in an embodiment of this utility model;

[0027] Figure 5 This is a perspective view of the rotating disk of the rapid rise and rapid fall valve in an embodiment of this utility model;

[0028] Figure 6 This is a perspective view of the valve stem of the rapid rise and rapid fall valve in an embodiment of this utility model;

[0029] Figure 7 This is a cross-sectional view of the valve seat of the rapid rise and rapid fall valve in an embodiment of this utility model;

[0030] Figure 8 This is a front view of the valve body of the rapid rise and rapid fall valve in this embodiment of the present invention;

[0031] Figure 9 for Figure 8 A cross-sectional view along the middle BB.

[0032] Explanation of reference numerals in the attached drawings: 1. Pressing rod; 1-1. First connecting rod; 1-2. First guide block; 1-3. First inclined surface; 1-4. Center hole; 1-5. Fifth inclined surface; 2. Rotating disk; 2-1. Second connecting rod; 2-2. Claw; 2-3. Second guide block; 2-4. Second inclined surface; 3. Valve seat; 3-1. Mounting plate; 3-2. Guide groove; 3-3. Third inclined surface; 3-4. Fourth inclined surface; 3-5. Notch; 3-6. Locking hole; 4. Valve stem; 4-1. Groove; 4-2. Center groove; 5. Spring; 6. End cap; 7. Valve body; 7-1. Air inlet; 7-2. Airbag connection port; 7-3. Exhaust port; 7-4. Spring seat; 8. Base support; 9. First sealing ring; 10. Second sealing ring; 11. Third sealing ring. Detailed Implementation

[0033] To better understand the purpose, structure, and function of this utility model, a rapid rise and fall valve of this utility model will be described in further detail below with reference to the accompanying drawings.

[0034] like Figure 1 , Figure 2 , Figure 3 The above is Embodiment 1 of the present invention, which discloses a rapid rise and fall valve, including a valve body 7, a valve stem 4, a valve seat 3, a rotating disk 2, an elastic element and a pressing rod 1;

[0035] The valve body 7 is located inside the valve seat 3. A valve chamber is provided inside the valve body 7. The valve stem 4 can move axially back and forth inside the valve chamber. 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 body 7 is provided with three air passage interfaces that connect to the first airflow chamber, the second airflow chamber and the outside. A groove 4-1 is provided on the outer wall of the valve stem 4. The valve stem 4 is inserted into the valve chamber to different depths. The groove 4-1 connects to the first airflow chamber and the second airflow chamber, and the second airflow chamber and the outside.

[0036] When groove 4-1 connects the first airflow chamber and the second airflow chamber, the airbag can be rapidly inflated. When groove 4-1 connects the second airflow chamber and the outside, the airbag can be rapidly deflated. The outside can be the atmosphere or a gas storage tank for recovering gas. The rapid rise and fall valve in this embodiment reconstructs an inflation and deflation path for the airbag, enabling the rapid raising and lowering of the car seat. The reciprocating movement of valve stem 4 can be manually driven, such as by manual pressing, or in an automatic drive mode, such as by an electric motor.

[0037] like Figure 2As shown, the three sealing rings are the first sealing ring 9, the second sealing ring 10, and the third sealing ring 11. Because the valve chamber wall, valve stem 4, and the three sealing rings are in a tight fit, 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 4-1 does not participate in the connection. When the groove 4-1 crosses the second sealing ring 10, the first airflow chamber and the second airflow chamber are connected through the groove 4-1, and the second airflow chamber is still isolated from the outside. When the groove 4-1 crosses the third sealing ring 11, the second airflow chamber is connected to the outside through the groove 4-1, and the first airflow chamber and the second airflow chamber are restored to the isolated state.

[0038] The sealing rings are made of rubber and can have a suitable cross-section, such as circular, rectangular, or grooved. The cross-sectional diameter (or height) of at least the second sealing ring 10 and the third sealing ring 11 must be less than the length of the groove 4-1 to ensure that the groove 4-1 connects to the separated chambers. The length of the groove 4-1 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.

[0039] like Figure 3 As shown, the air passage interfaces from top to bottom are air inlet 7-1, airbag connection port 7-2, and exhaust port 7-3. Air inlet 7-1 is connected to the first airflow chamber, airbag connection port 7-2 is connected to the second airflow chamber, and exhaust port 7-3 is connected to the outside. The air inlet 7-1 connects to the air pump or air tank installed in the car, the airbag connection 7-2 connects to the airbag under the car seat, and the exhaust port 7-3 connects to the atmosphere. When the first airflow chamber and the second airflow chamber are connected through the groove 4-1, the air inlet 7-1 and the airbag connection 7-2 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 4-1, the airbag connection 7-2 and the exhaust port 7-3 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 7-3, thereby quickly lowering the car seat to the predetermined minimum height.

[0040] In this embodiment, the pressing rod 1 and the rotating disk 2 are disposed on the upper end of the valve seat 3, and the rotating disk 2 presses against the upper end of the valve rod 4;

[0041] An elastic element is disposed within the valve chamber, and its upper end pushes against the valve stem 4. A limiting structure is provided on the inner wall of the valve seat 3. Pressing the pressing rod 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 4 at different depths within the valve chamber. The elastic element can be a spring, a silicone column, or other suitable elastic element, preferably a cylindrical spring 5.

[0042] A button can be installed on the upper end of the push rod 1 to meet the need for manual pressing, or it can be connected to a motor to meet the need for automatic drive. The valve seat 3 serves to assemble the push rod 1, rotating plate 2, valve stem 4, spring 5, and valve body 7, 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 5 As shown, the bottom of the pressing rod 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 pressing rod 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 length of the first inclined surface 1-3 can be less than the length 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 pressing rod 1 during rotation, thus avoiding jamming. The first guide block 1-2 and the second guide block 2-3 have the same radial extension length.

[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 pressing rod 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 pressing rod 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 pressing rod 1 has eight fifth inclined surfaces 1-5 evenly distributed. These fifth inclined surfaces 1-5 and the first inclined surfaces 1-3 are symmetrically continuous, sharing the same inclination length, inclination angle, and axial symmetry. 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 cooperation between the second inclined surfaces 2-4 and the limiting structure.

[0047] like Figure 7 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] The downward tilt of the third inclined plane 3-3 is less than that 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 pressing rod 1 needs to move a shorter distance downward compared to when deflating, allowing the occupant to restore the airbag to its original memory height with a shorter pressing stroke, reducing the pressing force and improving the user experience. Furthermore, the downward tilt of the third inclined plane 3-3 is less than that of the fourth inclined plane 3-4, ensuring that the pressing rod 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 pressing rod 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 pressing rod 1 disappears, and the second guide block 2-3 enters the limiting groove under the elastic force of the reset element. When the groove 4-1 of the valve stem 4 crosses the third sealing ring 11, the second airflow chamber and the outside are connected through the groove 4-1 to achieve exhaust. When the pressing rod 1 presses down on the 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 the pressing rod 1 disappears, and the second guide block 2-3 enters the guide groove 3-2 under the elastic force of the reset element. The rotating disk 2 rises, and when the groove 4-1 of the valve stem 4 crosses the second sealing ring 10, the first airflow chamber and the second airflow chamber are connected through the groove 4-1 to achieve rapid inflation.

[0051] When the pressing rod 1 presses down on the 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 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 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 pressing rod 1 to drive the rotating disk 2 to rotate.

[0053] like Figure 4 , Figure 5As shown, a first connecting rod 1-1 is provided in the middle of the pressing rod 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 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 in the central hole 1-4, allowing the rotating disk 2 and the pressing rod 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 pressing rod 1 will also be limited at the same time. The pressing rod 1 cannot move arbitrarily, which can prevent the pressing rod 1 from moving upward arbitrarily and the distance between it and the rotating disk 2 from becoming too large.

[0054] 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.

[0055] like Figure 6 , Figure 8 As shown, a central groove 4-2 is provided in the middle of the valve stem 4, and an elastic element, such as a spring 5, is provided in the valve chamber. The upper end of the spring 5 extends into the central groove 4-2 to push the valve stem 4, and the lower end of the spring 5 rests against the bottom of the valve chamber. A spring seat 7-4 is provided at the bottom of the valve chamber to fix the spring 5. The spring seat 7-4 can have a protruding or recessed structure. Because the valve stem 4 is hollow, the depth of the groove 4-1 must be less than the wall thickness of the valve stem 4 to avoid penetrating the side wall of the valve stem 4.

[0056] like Figure 9 As shown, an end cap 6 is provided at the upper end of the valve chamber, and the valve stem 4 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 4.

[0057] In a preferred embodiment, the outer wall of the valve stem 4 is provided with two or more grooves 4-1 to ensure reliable communication of the isolation chamber, and the two or more grooves 4-1 are at the same height on the outer wall of the valve stem 4.

[0058] 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 4. Alternatively, a support ring can be provided between adjacent sealing rings to also hold the sealing ring in place and prevent it from moving with the valve stem 4. 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 4. The inner wall of the support ring should not contact the cylindrical surface of the valve stem 4. Furthermore, a step needs to be provided on the inner wall of the valve chamber below the third sealing ring 11, such as... Figure 9As shown, the step can prevent the third sealing ring 11 from moving downwards, and the end cap 6 at the upper end of the valve chamber can prevent the first sealing ring 9 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 4.

[0059] like Figure 3 , Figure 7 As shown, three air inlets extend radially from the side wall of the valve body 7. An opening 3-5 is provided on one side of the valve seat 3, from which the three air inlets extend. From top to bottom, the air inlets are an air inlet 7-1, an airbag connection port 7-2, and an exhaust port 7-3. The three air inlets are pagoda-shaped, making them difficult to separate from the connecting pipes. The air inlet 7-1 connects to the vehicle's air pump or air tank via a pipe. The airbag connection port 7-2 connects to the airbag via a pipe. The exhaust port 7-3 can be emptied directly or via a pipe. It should be noted that the exhaust port 7-3 can also be connected to a recyclable gas storage tank via a pipe.

[0060] like Figure 2 As shown, a step is provided on the inner wall of the valve seat 3 to limit the valve body 7 and restrict its upward movement. The upper end of the valve seat 3 is provided with an inwardly protruding edge to limit the upward movement of the pressing rod 1. When the pressing rod 1 moves to this edge, it cannot disengage from the valve seat 3. At this time, the spring 5 still exerts elastic force on the valve stem 4, the rotating disk 2, and the pressing rod 1, and these three components will not wobble.

[0061] The valve seat 3 has a mounting plate 3-1 on its side wall. The mounting plate 3-1 has a connecting structure, such as mounting holes, so that the rapid rise and fall valve can be mounted and fixed in the vehicle through the mounting plate 3-1. Reinforcing ribs can also be provided between the mounting plate 3-1 and the side wall of the valve seat 3 to enhance the structural strength.

[0062] The lower end of the valve seat 3 is provided with a base support 8 to support the valve body 7. The base support 8 and the valve seat 3 can be detachably combined, for example by snap-fit ​​or threaded connection, to facilitate the assembly of the push rod 1, rotating disk 2, and valve body 7. The push rod 1, rotating disk 2, and valve body 7 can be inserted into the valve seat 3 through the lower opening of the valve seat 3, and then the base support 8 can be combined to realize the assembly of the rapid rise and fall valve.

[0063] In this embodiment, the rapid rise and fall 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.

[0064] In this embodiment, the rapid rise and fall valve integrates all components into a single module, making installation convenient and assembly highly efficient.

[0065] The rapid rise and fall valve in this embodiment has a reasonable structural design, is quick and agile to start, and has high operational reliability.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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 quick opening and closing valve, characterized by, The rapid rise and rapid fall valve includes a valve body, a valve stem, a valve seat, a rotating disk, an elastic element, and a pressing rod; The valve body is disposed within the valve seat, and a valve chamber is disposed within the valve body. The valve stem can move axially back and forth within the valve chamber. Three sealing rings are disposed on the inner wall of the valve chamber. A first airflow chamber and a second airflow chamber are separated within the valve chamber. The valve body 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 rotating disk is disposed at the upper end of the valve seat, and the rotating disk presses against the upper end of the valve stem; The elastic element is disposed in the valve chamber and the upper end of the elastic element pushes against the valve stem. A limit structure is provided on the inner wall of the valve seat. Pressing the pressing rod 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 pressing rod is disposed at the upper end of the valve seat. The bottom of the pressing rod has a plurality of first inclined surfaces evenly distributed, and the side wall has a plurality of radially extending first guide blocks evenly distributed. The top of the rotating disk has a plurality of second inclined surfaces evenly distributed, and the side wall has a plurality of radially extending second guide blocks evenly distributed. When the pressing rod is pressed, the first inclined surfaces drive the second inclined surfaces to move and drive the rotating disk to slide in the limiting structure under the elastic force of the elastic element.

2. The variable speed variable delivery valve according to claim 1, wherein 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 variable speed variable delivery valve according to claim 2, wherein 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 variable speed variable flow valve of claim 1 wherein, The pressing rod has a first connecting rod in the middle, and the rotating disk has a second connecting rod in the middle. The first connecting rod has a central hole in the middle, 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 pressing rod to rotate relative to each other and move axially a predetermined distance.

5. The variable speed variable flow valve of claim 1 wherein, The valve stem has a central groove in the middle, the upper end of the elastic element extends into the central groove to push the valve stem, and the lower end of the elastic element abuts against the bottom of the valve chamber.

6. The variable speed variable flow valve of claim 1 wherein, 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 variable speed variable flow valve of claim 1 wherein, An opening is provided on one side of the valve seat, and the air passage interface extends from the opening; The air path interface is from top to bottom respectively air inlet, air bag connecting port, exhaust port, the air inlet communicates the first air flow cavity, the air bag connecting port communicates the second air flow cavity, the exhaust port communicates the outside.

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