Pressure reducing valve device

Abstract

This utility model discloses a pressure reducing valve device, including a housing, an upper valve assembly, and a lower valve assembly. The housing has an air inlet chamber at its upper end and an air outlet chamber at its lower end. The housing contains vent holes communicating with both the air inlet and outlet chambers. The upper valve assembly includes an upper cover, an upper valve core, and an upper elastic element. The upper cover is positioned over the end of the air inlet chamber and has an air inlet port communicating with it. The upper elastic element is connected at both ends to the upper cover and the upper valve core, with a gap between the upper valve core and the upper end of the vent hole. The lower valve assembly includes a lower cover, a lower valve core, and a lower elastic element. The lower cover is positioned over the end of the air outlet chamber. The lower valve core is slidably fitted within the air outlet chamber. The lower elastic element is connected at both ends to the lower cover and the lower valve core. A gap is left between the lower valve core and the lower end of the vent hole. An air outlet communicating with the air outlet chamber is located on the side wall of the housing above the lower valve core on the side wall of the housing. The air inlet is connected to a gas source, and the air outlet is connected to a gas-using unit.

Description

Technical Field

[0001] This utility model belongs to the technical field of pressure reducing valve equipment, specifically a pressure reducing valve device. Background Technology

[0002] With the popularization of new energy vehicles and the continuous improvement of vehicle intelligence, users' requirements for in-vehicle comfort are increasing. Automotive seat comfort systems, especially seats with integrated pneumatic massage functions, have become an important feature for enhancing the cabin experience. Pneumatic massage systems achieve massage actions through inflation and deflation, and typically consist of an air pump, air bag, control valve, and connecting pipes. Currently, to simplify the system structure and reduce overall costs, the industry generally prefers to directly utilize the vehicle's existing air source (such as compressed air systems used for other functions) as the air source for pneumatic massage systems.

[0003] However, the operating pressure of the vehicle's air supply is typically high, far exceeding the safe operating pressure range of the seat massage airbags. Directly connecting a high-pressure air source to the massage air circuit can easily cause the airbags to over-inflate and rupture due to excessive pressure or pressure fluctuations, severely impacting their lifespan and system reliability. Furthermore, unstable pressure can lead to uneven massage intensity, affecting the user experience. Therefore, when using the vehicle's high-pressure air source to supply air to the massage air circuit, effective pressure reduction is essential to ensure that the pressure output to the airbags remains stable within a safe and suitable range.

[0004] While some general-purpose pressure reducing valves exist in the existing technology, they are mostly designed for industrial or pneumatic tools and often have problems such as large size, complex structure, high cost, or poor compatibility with the compact space of car seat systems and the need for frequent start-stop operations, making it difficult to directly integrate them into the specific application scenario of car seat massage.

[0005] Therefore, there is an urgent need for a pressure reducing valve device that is compact, responsive, has good pressure stabilization performance, and is specifically designed for automotive seat pneumatic massage systems, in order to solve the pressure stability problem under high-pressure air source input, thereby ensuring the smooth operation of the massage air circuit and the safe use of the air bag. Utility Model Content

[0006] The purpose of this utility model is to provide a pressure reducing valve device. This pressure reducing valve device integrates an air inlet chamber, an air outlet chamber, and a vent hole through the housing. With the coordinated work of the upper valve group and the lower valve group, it realizes the integrated function of gas pressure reduction and stabilization, simplifies the overall structure, and facilitates installation and maintenance.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A pressure reducing valve device includes a housing, an upper valve assembly, and a lower valve assembly. The housing has an inlet chamber at its upper end and an outlet chamber at its lower end. The housing contains vent holes communicating with both the inlet and outlet chambers. The upper valve assembly includes an upper cover, an upper valve core, and an upper elastic element. The upper cover is positioned over the end of the inlet chamber and has an inlet port communicating with it. The upper elastic element is connected at both ends to the upper cover and the upper valve core, respectively, with a gap between the upper valve core and the upper edge of the vent hole. The lower valve assembly includes… The device includes a lower cover, a lower valve core, and a lower elastic element. The lower cover is located at the end of the air outlet chamber. The lower valve core is slidably sleeved within the air outlet chamber. The two ends of the lower elastic element are connected to the lower cover and the lower valve core, respectively. A gap is left between the lower valve core and the lower end of the vent hole. An air outlet communicating with the air outlet chamber is provided on the side wall of the housing above the lower valve core. The air inlet is connected to the air source, and the air outlet is connected to the air-using unit. The gas is depressurized after passing through the air inlet, air inlet chamber, vent hole, air outlet chamber, and air outlet before entering the air-using unit.

[0009] Furthermore, a protruding rod is fixed to the inner side of the upper end of the lower valve core; the upper end of the protruding rod passes through the vent hole and abuts against the bottom of the upper valve core, and a gap is left between the protruding rod and the vent hole; an adjusting component is provided on the lower cover, and the lower end of the lower elastic component is connected to the adjusting component; the elastic coefficient of the lower elastic component is greater than that of the upper elastic component, and the distance between the upper valve core and the upper edge of the vent hole is adjusted by changing the installation height of the protruding rod through the adjusting component.

[0010] Furthermore, the adjusting component includes a stop block, a mounting rod, a screw, and a screw sleeve; the stop block abuts against the lower cover at the lower end of the air outlet chamber; the mounting rod is fixed to the lower end of the stop block and its lower end protrudes outward from the lower cover; the screw is fixed to the upper end of the stop block, and the screw sleeve is threadedly connected to the screw; the lower end of the lower elastic element is connected to the screw sleeve, and the height of the upper valve core is adjusted by rotating the screw sleeve to raise the convex rod, thereby adjusting the distance between the upper valve core and the upper edge of the vent hole.

[0011] Furthermore, the convex rod and the lower valve core are provided with vent holes in the axial direction.

[0012] Furthermore, a protrusion is provided at the upper end of the vent along the circumference, which limits the maximum descent height of the upper valve core.

[0013] Furthermore, the housing on the side wall of the air intake chamber is provided with multiple protrusions at intervals; the upper valve core is slidably disposed between the multiple protrusions, and the gas enters below the upper valve core through the air intake port and the gap between the protrusions.

[0014] Furthermore, a first sealing ring is provided between the upper cover and the housing to improve the sealing performance between the upper cover and the housing; a second sealing ring is provided between the lower valve core and the housing to improve the sealing performance between the lower valve core and the housing.

[0015] Furthermore, the upper cover is provided with upper hooks on both sides, and upper hook blocks are provided on the two outer side walls at the upper end of the housing. The upper cover is detachably attached to the housing by fastening the upper hooks to the upper hook blocks. The lower cover is provided with lower hooks on both sides, and lower hook blocks are provided on the two outer side walls at the lower end of the housing. The lower cover is detachably attached to the housing by fastening the lower hooks to the lower hook blocks.

[0016] Furthermore, both the lower elastic element and the upper elastic element are springs.

[0017] After adopting the above technical solution, the present invention has the following beneficial effects:

[0018] 1. This utility model discloses a pressure reducing valve device. The core feature is that the small gap between the upper valve core and the upper edge of the vent hole reduces the gas flow through the vent hole, thereby achieving gas pressure reduction. Specifically, the upper valve assembly controls the gap between the upper valve core and the upper edge of the vent hole through the upper elastic element, initially regulating the airflow. The lower valve assembly, through the lower elastic element and the lower valve core, dynamically responds to changes in the outlet pressure, further finely regulating the airflow to achieve stable outlet pressure output. This is suitable for gas-using units with high requirements for gas pressure stability. Simultaneously, by integrating the inlet chamber, outlet chamber, and vent hole into the housing, and coordinating the work of the upper and lower valve assemblies, an integrated function of gas pressure reduction and stabilization is achieved, simplifying the overall structure and facilitating installation and maintenance.

[0019] 2. This utility model discloses a pressure reducing valve device. Through the linkage design of the lower valve core protrusion and the upper valve core, combined with the adjusting component, the height of the upper valve core can be adjusted by rotating the screw sleeve, thereby adjusting the distance between the upper valve core and the upper edge of the vent hole. This allows for precise adjustment of the upper valve core opening height, enabling flexible setting of the outlet pressure value and improving the applicability and adjustment accuracy of the device. Simultaneously, the upper and lower covers are connected to the housing using a snap-fit ​​structure, allowing for quick disassembly without tools, facilitating the rotation of the screw sleeve and replacement of internal parts or cleaning and maintenance.

[0020] 3. This utility model discloses a pressure reducing valve device. A first sealing ring is provided between the upper cover and the housing, and a second sealing ring is provided between the lower valve core and the housing. This effectively prevents gas leakage and ensures the safety and energy efficiency of the pressure reducing process. In addition, the vent holes axially arranged on the protruding rod and the lower valve core allow the protruding rod to always abut against the lower end of the upper valve core within the normal pressure range. This is because the elastic coefficient of the lower elastic element is greater than that of the upper elastic element. However, when the inlet and outlet chambers are abnormally high, the gas pressure exceeds the elastic force of the lower elastic element, thereby driving the lower valve core to descend and separating the protruding rod from the upper valve core. At this time, the gas can enter the lower valve core from the vent hole and then be discharged outward from the gap between the adjusting element and the housing to achieve pressure relief. This can play an overpressure protection role, avoid device damage, and improve service life and safety.

[0021] 4. The present invention provides a pressure reducing valve device, wherein the upper end of the vent hole is provided with a protrusion along the circumference, and a convex strip structure is provided on the side wall of the air inlet chamber, which can guide the gas to enter the lower part of the upper valve core evenly, reduce turbulence and pressure fluctuation, and improve airflow stability. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the upper and lower valve groups of this utility model when they are not installed in the housing.

[0023] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0025] Figure 4 This is a cross-sectional structural diagram of the shell of this utility model.

[0026] The reference numerals in the figure are as follows:

[0027] 1. Housing; 10. Inlet chamber; 11. Outlet chamber; 12. Vent hole; 13. Outlet; 14. Protrusion; 15. Raised strip; 16. Upper hanging block; 17. Lower hanging block; 2. Upper valve assembly; 20. Upper cover; 200. Inlet; 201. Upper hook; 21. Upper valve core; 22. Upper elastic element; 23. First sealing ring; 3. Lower valve assembly; 30. Lower cover; 300. Lower hook; 31. Lower valve core; 310. Raised rod; 311. Vent hole; 32. Lower elastic element; 33. Adjusting element; 330. Stop block; 331. Mounting rod; 332. Screw; 333. Screw sleeve; 34. Second sealing ring. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] Please see Figures 1 to 4A pressure reducing valve device includes a housing 1, an upper valve assembly 2, and a lower valve assembly 3. The housing 1 has an air inlet chamber 10 at its upper end and an air outlet chamber 11 at its lower end. The housing 1 contains vent holes 12 communicating with the air inlet chamber 10 and the air outlet chamber 11 respectively. The upper valve assembly 2 includes an upper cover 20, an upper valve core 21, and an upper elastic element 22. The upper cover 20 covers the end of the air inlet chamber 10 and has an air inlet 200 communicating with the air inlet chamber 10. The upper elastic element 22 is connected at both ends to the upper cover 20 and the upper valve core 21 respectively, with a gap between the upper valve core 21 and the upper end of the vent hole 12. The lower valve assembly 3 includes... The unit comprises a lower cover 30, a lower valve core 31, and a lower elastic element 32. The lower cover 30 covers the end of the air outlet chamber 11. The lower valve core 31 is slidably sleeved inside the air outlet chamber 11. The two ends of the lower elastic element 32 are respectively connected to the lower cover 30 and the lower valve core 31. A gap is left between the lower valve core 31 and the lower end of the vent hole 12. An air outlet 13 communicating with the air outlet chamber 11 is provided on the side wall of the housing 1 above the lower valve core 31. The air inlet 200 is connected to the air source, and the air outlet 13 is connected to the air-using unit. The gas is depressurized after passing through the air inlet 200, the air inlet chamber 10, the vent hole 12, the air outlet chamber 11, and the air outlet 13 before entering the air-using unit.

[0030] like Figures 1 to 4 As shown, a protruding rod 310 is fixed to the inner side of the upper end of the lower valve core 31; the upper end of the protruding rod 310 passes through the vent hole 12 and abuts against the bottom of the upper valve core 21, and a gap is left between the protruding rod 310 and the vent hole 12; an adjusting member 33 is provided on the lower cover 30, and the lower end of the lower elastic member 32 is connected to the adjusting member 33; the elastic coefficient of the lower elastic member 32 is greater than the elastic coefficient of the upper elastic member 22, and the distance between the upper valve core 21 and the upper edge of the vent hole 12 is adjusted by changing the installation height of the protruding rod 310 through the adjusting member 33.

[0031] like Figures 1 to 4 As shown, the adjusting component 33 includes a stop block 330, a mounting rod 331, a screw 332, and a screw sleeve 333; the stop block 330 abuts against the lower cover 30 at the lower end of the air outlet chamber 11; the mounting rod 331 is fixed to the lower end of the stop block 330 and its lower end protrudes outward from the lower cover 30; the screw 332 is fixed to the upper end of the stop block 330, and the screw sleeve 333 is threadedly connected to the screw 332; the lower end of the lower elastic component 32 is connected to the screw sleeve 333, and the height of the upper valve core 21 is adjusted by rotating the screw sleeve 333 to adjust the distance between the upper valve core 21 and the upper edge of the vent hole 12.

[0032] like Figures 1 to 4 As shown, the convex rod 310 and the lower valve core 31 are axially provided with vent holes 311.

[0033] like Figures 1 to 4As shown, a protrusion 14 is provided on the upper end of the vent 12 along the circumferential direction, and the protrusion 14 limits the maximum descent height of the upper valve core 21.

[0034] like Figures 1 to 4 As shown, multiple protrusions 15 are spaced apart on the housing 1 of the side wall of the air intake chamber 10; the upper valve core 21 is slidably disposed between the multiple protrusions 15, and the gas enters below the upper valve core 21 through the gap between the air intake port 200 and the protrusions 15.

[0035] like Figures 1 to 4 As shown, a first sealing ring 23 is provided between the upper cover 20 and the housing 1 to improve the sealing performance between the upper cover 20 and the housing 1; a second sealing ring 34 is provided between the lower valve core 31 and the housing 1 to improve the sealing performance between the lower valve core 31 and the housing 1.

[0036] like Figures 1 to 4 As shown, the upper cover 20 is provided with upper hooks 201 on both sides, and upper hook blocks 16 are provided on the two outer walls of the upper end of the housing 1. The upper cover 20 is detachably covered on the housing 1 by fastening the upper hooks 201 to the upper hook blocks 16. The lower cover 30 is provided with lower hooks 300 on both sides, and lower hook blocks 17 are provided on the two outer walls of the lower end of the housing 1. The lower cover 30 is detachably covered on the housing 1 by fastening the lower hooks 300 to the lower hook blocks 17.

[0037] like Figures 1 to 4 As shown, both the lower elastic element 32 and the upper elastic element 22 are springs.

[0038] It is understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0039] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0040] It is further understood that the terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation.

[0041] It can be further understood that, unless otherwise specified, "connection" includes both direct connections where no other components exist between the two parties and indirect connections where other components exist between them.

[0042] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0043] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0044] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A pressure reducing valve device, characterized in that: The system includes a housing (1), an upper valve assembly (2), and a lower valve assembly (3); the housing (1) has an air inlet chamber (10) at its upper end and an air outlet chamber (11) at its lower end; the housing (1) has vent holes (12) that communicate with the air inlet chamber (10) and the air outlet chamber (11) respectively; the upper valve assembly (2) includes an upper cover (20), an upper valve core (21), and an upper elastic element (22); the upper cover (20) is placed over the end of the air inlet chamber (10), and the upper cover (20) has an air inlet (200) that communicates with the air inlet chamber (10); the upper elastic element (22) is connected to the upper cover (20) and the upper valve core (21) at both ends respectively, and there is a gap between the upper valve core (21) and the upper end of the vent hole (12); the lower valve assembly (3) includes a lower valve assembly (3) and an upper valve core (21). The unit consists of a cover (30), a lower valve core (31), and a lower elastic element (32). The lower cover (30) is positioned over the end of the air outlet chamber (11). The lower valve core (31) is slidably fitted inside the air outlet chamber (11). The two ends of the lower elastic element (32) are connected to the lower cover (30) and the lower valve core (31) respectively. A gap is left between the lower valve core (31) and the lower end of the vent hole (12). An air outlet (13) communicating with the air outlet chamber (11) is provided on the side wall of the housing (1) above the lower valve core (31). The air inlet (200) is connected to the air source, and the air outlet (13) is connected to the air-using unit. The gas is depressurized after passing through the air inlet (200), the air inlet chamber (10), the vent hole (12), the air outlet chamber (11), and the air outlet (13) before entering the air-using unit.

2. The pressure reducing valve device as described in claim 1, characterized in that: A protruding rod (310) is fixed on the inner side of the upper end of the lower valve core (31); the upper end of the protruding rod (310) passes through the vent hole (12) and abuts against the bottom of the upper valve core (21), and there is a gap between the protruding rod (310) and the vent hole (12); an adjusting member (33) is provided on the lower cover (30), and the lower end of the lower elastic member (32) is connected to the adjusting member (33); the elastic coefficient of the lower elastic member (32) is greater than the elastic coefficient of the upper elastic member (22), and the distance between the upper valve core (21) and the upper edge of the vent hole (12) is adjusted by changing the installation height of the protruding rod (310) through the adjusting member (33).

3. The pressure reducing valve device as described in claim 2, characterized in that: The adjusting component (33) includes a stop block (330), a mounting rod (331), a screw (332), and a screw sleeve (333); the stop block (330) abuts against the lower cover (30) at the lower end of the air outlet chamber (11); the mounting rod (331) is fixed to the lower end of the stop block (330) and its lower end protrudes outward from the lower cover (30); the screw (332) is fixed to the upper end of the stop block (330), and the screw sleeve (333) is threadedly connected to the screw (332); the lower end of the lower elastic component (32) is connected to the screw sleeve (333), and the height of the upper valve core (21) is raised by adjusting the convex rod (310) by rotating the screw sleeve (333), thereby realizing the adjustment of the distance between the upper valve core (21) and the upper edge of the vent hole (12).

4. The pressure reducing valve device as described in claim 3, characterized in that: The convex rod (310) and the lower valve core (31) are provided with vent holes (311) in the axial direction.

5. A pressure reducing valve device as described in claim 2, characterized in that: The upper end of the vent (12) is provided with a protrusion (14) along the circumferential direction, and the protrusion (14) limits the maximum descent height of the upper valve core (21).

6. The pressure reducing valve device as described in claim 1, characterized in that: Multiple protrusions (15) are spaced apart on the housing (1) of the side wall of the air intake chamber (10); the upper valve core (21) is slidably disposed between the multiple protrusions (15), and the gas enters below the upper valve core (21) through the gap between the air intake port (200) and the protrusions (15).

7. A pressure reducing valve device as described in claim 1, characterized in that: A first sealing ring (23) is provided between the upper cover (20) and the housing (1) to improve the sealing performance between the upper cover (20) and the housing (1); a second sealing ring (34) is provided between the lower valve core (31) and the housing (1) to improve the sealing performance between the lower valve core (31) and the housing (1).

8. The pressure reducing valve device as described in claim 1, characterized in that: The upper cover (20) is provided with upper hooks (201) on both sides, and upper hook blocks (16) are provided on the two outer walls of the upper end of the shell (1). The upper cover (20) is detachably covered on the shell (1) by fastening the upper hooks (201) to the upper hook blocks (16); the lower cover (30) is provided with lower hooks (300) on both sides, and lower hook blocks (17) are provided on the two outer walls of the lower end of the shell (1). The lower cover (30) is detachably covered on the shell (1) by fastening the lower hooks (300) to the lower hook blocks (17).

9. A pressure reducing valve device as described in claim 1, characterized in that: Both the lower elastic element (32) and the upper elastic element (22) are springs.

Images