Fluid control device, valve module and pneumatic comfort system
By embedding a buffer pad in the mounting groove of the valve core and setting a buffer space between its inner walls, the problem of poor buffering effect is solved, noise and vibration are reduced, and the performance of fluid control devices and pneumatic comfort systems is improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TANGTRING SEATING TECH INC
- Filing Date
- 2025-07-29
- Publication Date
- 2026-08-04
AI Technical Summary
The existing air valve lacks buffer space between the buffer pad and the mounting groove, resulting in poor buffering effect and serious noise and vibration problems.
A buffer pad is embedded in the mounting groove of the valve core to create a buffer space between it and the inner wall of the mounting groove. This increases the deformation of the buffer pad, and the deformation of the buffer pad within the buffer space enhances the buffering effect, reducing noise and vibration.
It improves the cushioning effect of the shock absorber, reduces noise and vibration in the fluid control device and pneumatic comfort system, and enhances the user experience.
Smart Images
Figure CN224592815U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fluid control technology, and in particular to a fluid control device, valve module and pneumatic comfort system. Background Technology
[0002] In pneumatic comfort systems, air valves, such as solenoid valves, control the inflation and deflation of air bags or regulate air pressure in the air passages. The air valve controls the opening and closing of the air inlet by switching the position of its valve core, thereby controlling the interruption or directional delivery of airflow. The valve core has a buffer pad at its end, which cushions the air inlet edge, reducing noise caused by the valve core impacting the edge of the air inlet during position switching and enhancing the sealing effect.
[0003] The buffer pad is usually installed by embedding it into the mounting groove at the end of the valve core. The buffer pad and the mounting groove are interference fit, which results in a lack of buffer space between the buffer pad and the inner wall of the mounting groove. Consequently, when the buffer pad comes into contact with the edge of the vent, it cannot be further compressed, resulting in small deformation of the buffer pad during the impact buffering process and poor buffering effect. Utility Model Content
[0004] The present invention aims to provide a fluid control device, valve module, and pneumatic comfort system to at least improve the poor cushioning effect of the buffer pad installed on the valve core.
[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0006] In a first aspect, embodiments of the present invention provide a fluid control device, the fluid control device comprising a valve body, a valve core, and a first buffer pad; the valve body is provided with a conduction chamber and a first medium opening and a second medium opening in fluid communication with the conduction chamber; the valve core is disposed in the conduction chamber; the fluid control device has a first conduction state in which the valve core is displaced to close the first medium opening, and a second conduction state in which the valve core is displaced to open the first medium opening; a first mounting groove is provided at a first end of the valve core; the first buffer pad is embedded in the first mounting groove, the first buffer pad being used to bufferably seal the first medium opening in the first conduction state; wherein, a first buffer space is provided between the first buffer pad and the inner wall of the first mounting groove.
[0007] In some embodiments, the first mounting groove includes a first segment groove and a second segment groove that are in communication with each other, the first segment groove being adjacent to the first medium opening and the second segment groove being away from the first medium opening; the first buffer pad passing through the first segment groove and being fitted into the second segment groove; the first buffer pad being in an interference fit with the first segment groove; and a first buffer space being provided between the first buffer pad and the inner wall of the second segment groove.
[0008] In some embodiments, the inner diameter of the first groove is smaller than the inner diameter of the second groove; the end of the first buffer pad abuts against the bottom wall of the second groove, and the first buffer pad has a first buffer space in the radial direction between itself and the inner wall of the second groove.
[0009] In some embodiments, a limiting platform is provided between the first segment groove and the second segment groove, and a buckle is provided on the outer periphery of the first buffer pad. The buckle engages with the limiting platform to prevent the first buffer pad from detaching from the first mounting groove.
[0010] In some embodiments, the first conduction state further includes the valve core displacement opening the second medium opening; the second conduction state further includes the valve core displacement closing the second medium opening; the fluid control device further includes a second buffer pad, the second buffer pad being disposed at the second end of the valve core, the second buffer pad being used to bufferably seal the second medium opening in the second conduction state.
[0011] In some embodiments, the second end of the valve core is provided with a second mounting groove; the second buffer pad is embedded in the second mounting groove, and a second buffer space is provided between the second buffer pad and the inner wall of the second mounting groove.
[0012] In some embodiments, the fluid control device further includes an actuator for actuating the valve core to close or open the first medium opening.
[0013] In some embodiments, the fluid control device further includes an elastic reset member for causing the valve core to normally open or close the first medium opening.
[0014] In some embodiments, the valve body is further provided with a third medium opening that is in fluid communication with the conduction chamber; in the first conduction state, the third medium opening is in communication with the second medium opening; in the second conduction state, the third medium opening is in communication with the first medium opening.
[0015] Secondly, this utility model provides a valve module, which includes the fluid control device as described in any of the above embodiments.
[0016] Thirdly, this utility model provides a pneumatic comfort system, which includes an air source device, a plurality of air bags, and a valve module. The air source device is in fluid communication with the plurality of air bags through the valve module.
[0017] The fluid control device of this utility model has a buffer pad embedded in the mounting groove of the valve core, and there is a buffer space between the buffer pad and the inner wall of the mounting groove. This allows the buffer pad to deform within the buffer space when the valve core is displaced and closes the medium opening corresponding to the buffer pad, and the buffer pad makes buffering contact with the edge of the medium opening. This increases the deformation of the buffer pad, enhances the buffering effect, and achieves displacement buffering of the valve core, reducing vibration and noise generated by the fluid control device, while ensuring that the medium opening is sealed.
[0018] The valve module includes a fluid control device. The valves in the valve module used to control the directional delivery of fluid and regulate the fluid pressure can all adopt the above-mentioned fluid control device. Based on the buffer space between the buffer pad of the fluid control device and the inner wall of the mounting groove, the vibration and noise generated by the valve module can be reduced.
[0019] The pneumatic comfort system includes an air source device, air bags, and a valve module, enabling functions such as pneumatic support and pneumatic massage. The valve module includes valves for controlling the inflation and deflation of the air bags and valves for regulating air pressure, both of which can utilize the aforementioned fluid control device. The buffer space between the buffer pad of the fluid control device and the inner wall of the mounting groove reduces valve noise, thereby reducing vibration and noise generated by the pneumatic comfort system and improving the user experience.
[0020] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description
[0021] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.
[0022] Figure 1 This is a schematic diagram of the structure of the fluid control device according to an embodiment of the present invention;
[0023] Figure 2 This is a cross-sectional view of the fluid control device according to an embodiment of the present invention;
[0024] Figure 3 This is a cross-sectional view of a portion of the structure of the fluid control device according to an embodiment of the present invention;
[0025] Figure 4 This is an exploded view of the fluid control device according to an embodiment of the present invention;
[0026] Figure 5 This is an exploded view of the fluid control device according to another embodiment of the present invention;
[0027] Figure 6 yes Figure 2 A partially enlarged cross-sectional view of the valve core;
[0028] Figure 7 This is an exploded view of a portion of the structure of the fluid control device according to an embodiment of the present invention.
[0029] The reference numerals in the detailed embodiments are as follows:
[0030] 100. Fluid control device;
[0031] 1. Valve body; 11. Conducting chamber; 12. First medium opening; 13. Second medium opening; 14. First valve shell; 141. First mounting port; 142. Snap hole; 15. Second valve shell; 151. Snap groove; 16. Third medium opening; 17. Sealing contact surface; 18. Protruding wall;
[0032] 2. Valve core; 21. First mounting groove; 211. First section groove; 212. Second section groove; 213. Limiting platform; 214. Conical groove; 22. Assembly column;
[0033] 3. First buffer pad; 31. Buckle; 32. Abutment part;
[0034] 4. Yoke; 41. Clamping post; 42. Clamping arm;
[0035] 5. Actuating element; 6. Resilient reset element;
[0036] 7. Second buffer pad; 71. Assembly slot;
[0037] a. First buffer space. Detailed Implementation
[0038] To facilitate understanding of this utility model, it will be described in more detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the utility model. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or there may be one or more intervening elements between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or there may be one or more intervening elements between them.
[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the invention, are intended to cover non-exclusive inclusion.
[0040] In the description of the embodiments of this utility model, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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 the embodiments of this utility model 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. Therefore, they should not be construed as limitations on the embodiments of this utility model.
[0041] In the description of the embodiments of this utility model, the terms "first," "second," etc., are used to define components merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this utility model. In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly defined.
[0042] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.
[0043] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0044] Firstly, please refer to Figures 1 to 3This utility model provides a fluid control device 100, which includes a valve body 1, a valve core 2, and a first buffer pad 3. The valve body 1 has a conduction chamber 11 and a first medium opening 12 and a second medium opening 13 in fluid communication with the conduction chamber 11. The valve core 2 is disposed in the conduction chamber 11; the fluid control device 100 has a first conduction state in which the valve core 2 is displaced to close the first medium opening 12, and a second conduction state in which the valve core 2 is displaced to open the first medium opening 12; the first buffer pad 3 is disposed at the first end of the valve core 2, and the first buffer pad 3 is used to buffer and seal the first medium opening 12 in the first conduction state.
[0045] The fluid control device 100 includes, but is not limited to, solenoid valves, electric valves, pneumatic valves, hydraulic valves, manual shut-off valves, and safety valves. Furthermore, depending on the type of fluid control device 100, the valve body 1 may have only a first medium opening 12 and a second medium opening 13, or it may have multiple medium openings, not limited to the first and second medium openings 12 and 13, such as a first medium opening 12, a second medium opening 13, and a third medium opening 16. Further, when the first medium opening 12 is open, the second medium opening 13 may be correspondingly closed or unclosed. When the second medium opening 13 is unclosed, the first medium opening 12 and the second medium opening 13 can be fluidly connected via the conduction chamber 11. When the valve body 1 has multiple medium openings, not limited to the first and second medium openings 12 and 13, when the first medium opening 12 is open and the second medium opening 13 is closed, the first medium opening 12 can be connected to several other medium openings, such as the third medium opening 16.
[0046] In some embodiments, the fluid control device 100 may include, but is not limited to, a pressure regulating valve, wherein the first medium opening 12 and the second medium opening 13 may serve as an airflow inlet and a pressure discharge outlet, respectively. When the first medium opening 12 is opened, the first medium opening 12 and the second medium opening 13 are connected, and airflow flows in from the first medium opening 12 and is discharged from the second medium opening 13, or flows in from the second medium opening 13 and is discharged from the first medium opening 12.
[0047] In other embodiments, the fluid control device 100 may be a valve with fluid distribution function, such as a two-position three-way solenoid valve; see [reference needed]. Figures 2 to 4The valve body 1 also includes a third medium opening 16 that is in fluid communication with the conduction chamber 11. In the first conduction state, the third medium opening 16 is connected to the second medium opening 13; in the second conduction state, the third medium opening 16 is connected to the first medium opening 12. That is, the fluid control device 100 is used to control the third medium opening 16 to selectively connect with the first medium opening 12 or the second medium opening 13. Wherein, when the first medium opening 12 and the second medium opening 13 are respectively the vent and the inlet, and the third medium opening 16 is the inflation port, the fluid control device 100 is used to control the inflation port to selectively connect with the inlet or the vent, thereby controlling the inflation and deflation of the device to be inflated that is in fluid communication with the inflation port. Optionally, the device to be inflated is an air bag. Of course, according to the series connection of multiple fluid control devices 100, it can also be a multi-position control valve with fluid distribution function, such as a three-position three-way solenoid valve; or, according to the setting of multiple medium openings, it can also be a valve with multi-way fluid distribution function.
[0048] For valve body 1 mentioned above, please refer to Figure 4 and Figure 5 The valve body 1 includes a first valve shell 14 and a second valve shell 15. The first valve shell 14 is cavity-shaped and has a first mounting port 141 at one end that opens its inner cavity. The second valve shell 15 is disposed at the first mounting port 141 and seals the first mounting port 141, thereby enclosing and forming a conduction chamber 11, which facilitates the molding and assembly of the valve body 1. The first valve shell 14 is provided with a second medium opening 13, and the second valve shell 15 is provided with a first medium opening 12. In some embodiments, a third medium opening 16, which serves as an air inlet, may be formed in the first valve shell 14.
[0049] In some embodiments, please refer to Figure 4 and Figure 5 The fluid control device 100 is a solenoid valve, and the valve body 1 also includes a yoke 4. The yoke 4 is configured to correspond to the spool groove of the first valve housing 14, and the conduction chamber 11 is opened to correspond to the spool groove, so as to enhance the excitation effect of the electromagnetic coil wound on the spool groove on the valve core 2 in the conduction chamber 11. The yoke 4 is provided with a retaining post 41, and the first valve housing 14 is provided with a retaining hole 142. The retaining post 41 is inserted into the retaining hole 142 to snap the yoke 4 to the first valve housing 14. The yoke 4 is provided with two retaining arms 42, and the second valve housing 15 is provided with a retaining groove 151. The two retaining arms 42 clamp the second valve housing 15, and the clamping arms are at least partially located in the retaining groove 151, thereby preventing the second valve housing 15 from detaching from the first mounting port 141, so as to detachably install the second valve housing 15 to the first valve housing 14.
[0050] The valve core 2 described above is used to displace within the conduction chamber 11, thereby opening or closing the first medium opening 12. For example, please refer to... Figures 2 to 5The fluid control device 100 also includes an actuator 5, which is used to actuate the valve core 2 to open or close the first medium opening 12. Specifically, for the fluid control device 100 which functions as a solenoid valve, the actuator 5 can be an electromagnetic coil wound around the first valve housing 14 and corresponding to the conduction chamber 11; the valve core 2 is made of ferromagnetic material, including an iron core or a permanent magnet, so that when the electromagnetic coil is energized to generate a magnetic field, it can magnetically excite the valve core 2 to move within the conduction chamber 11.
[0051] In some embodiments, please refer to Figure 2 , Figure 4 and Figure 5 The fluid control device 100 also includes an elastic reset member 6, which is optionally a spring. The elastic reset member 6 is used to elastically cause the valve core 2 to normally close or open the first medium opening 12.
[0052] In some embodiments, the first end of the elastic reset member 6 abuts against the second end of the valve core 2, and the second end of the elastic reset member 6 abuts against the inner wall of the valve body 1 near the second medium opening 13. The elastic reset member 6 is in a compressed state, thereby causing the valve core 2 to tend to move towards the first medium opening 12. Under the action of the elastic reset member 6, the valve core 2 normally closes the first medium opening 12. Alternatively, in other embodiments, the first end of the elastic reset member 6 abuts against the inner wall of the valve body 1 near the first medium opening 12, and the second end of the elastic reset member 6 abuts against the first end of the valve core 2. The elastic reset member 6 is in a compressed state, thereby causing the valve core 2 to tend to move away from the first medium opening 12. Under the action of the elastic reset member 6, the valve core 2 normally opens the first medium opening 12.
[0053] It should be noted that you should refer to [link / reference]. Figure 2 , Figure 6 and Figure 7 The first end of the valve core 2 is provided with a first mounting groove 21; the first buffer pad 3 is embedded in the first mounting groove 21 so that when the valve core 2 moves close to the first medium opening 12, the first buffer pad 3 makes buffer contact with the opening periphery of the first medium opening 12 to avoid the valve core 2 directly hitting the opening periphery of the first medium opening 12 and generating noise, and the first buffer pad 3 seals the first medium opening 12 after the displacement is in place.
[0054] Optionally, the first buffer pad 3 is made of materials such as rubber or silicone.
[0055] In some embodiments, a first buffer space a is provided between the first buffer pad 3 and the inner wall of the first mounting groove 21. For example, please refer to... Figure 2 and Figure 6The first mounting groove 21 includes a first groove 211 and a second groove 212 that are interconnected. The first groove 211 is adjacent to the first medium opening 12, and the second groove 212 is away from the first medium opening 12. The first groove 211 is a through hole, and the second end of the first buffer pad 3 passes through the first groove 211 and is assembled to the second groove 212. The first buffer pad 3 is interference-fitted with the first groove 211. There is a first buffer space a between the first buffer pad 3 and the second groove 212. Therefore, when the valve core 2 moves closer to the first medium opening 12 and the first buffer pad 3 makes buffered contact with the edge of the first medium opening 12 for buffered sealing, the portion of the first buffer pad 3 within the second groove 212 can extend and expand along the first buffer space a, allowing the first buffer pad 3 to be fully compressed in the direction intersecting the extension direction. For example, the first buffer pad 3 can be fully compressed in the depth direction of the first mounting groove 21, increasing the deformation of the first buffer pad 3, enhancing the buffering effect of the first buffer pad 3, achieving displacement buffering of the valve core 2, reducing vibration and noise generated by the fluid control device 100, and ensuring sealing of the first medium opening 12. The first end of the first buffer pad 3 extends out of the first groove 211, or is exposed outward from the first groove 211.
[0056] Specifically, the first buffer pad 3 and the valve core 2 have the same extending direction, such as being coaxial. During buffering contact, the force on the first buffer pad 3 is transmitted primarily axially, causing it to be compressed axially. In a preferred embodiment, the inner diameter of the first groove 211 is smaller than the inner diameter of the second groove 212; the end of the first buffer pad 3 abuts against the bottom wall of the second groove 212, and a first buffer space a exists radially between the first buffer pad 3 and the inner wall of the second groove 212. That is, the outer diameter of the portion of the first buffer pad 3 within the second groove 212 is smaller than the inner diameter of the second groove 212. Thus, the compression direction and the extension / expansion direction of the first buffer pad 3 intersect but do not overlap or are not parallel, such as being orthogonal, allowing the first buffer pad 3 to fully perform its buffering function.
[0057] Optionally, the first buffer pad 3 can be designed as a strip shape that is easy to form and assemble. Alternatively, the first buffer pad 3 can also be designed into a corresponding shape or a required assembly shape according to the shapes of the first groove 211 and the second groove 212. In some other embodiments, the inner diameter of the first groove 211 is greater than or equal to the inner diameter of the second groove 212, the first buffer pad 3 is in the shape of a stepped shaft, and the outer diameter of the portion of the first buffer pad 3 located in the second groove 212 is smaller than the inner diameter of the second groove 212. The portion of the first buffer pad 3 within the second groove 212 can expand radially, increasing the deformation of the first buffer pad 3 and enhancing its buffering effect.
[0058] In some other embodiments, the first buffer pad 3 and the second groove 212 may be interference-fitted; a first buffer space a may be provided between the first buffer pad 3 and the first groove 211. Exemplarily, the outer diameter of the portion of the first buffer pad 3 located in the first groove 211 is smaller than the inner diameter of the first groove 211. The portion of the first buffer pad 3 within the first groove 211 can expand radially, increasing the deformation of the first buffer pad 3 and enhancing its buffering effect.
[0059] In some embodiments, please refer to Figure 2 , Figure 6 and Figure 7 A limiting platform 213 is provided between the first groove 211 and the second groove 212. A buckle 31 is provided on the outer periphery of the first buffer pad 3. The buckle 31 engages with the limiting platform 213 to prevent the first buffer pad 3 from detaching from the first mounting groove 21. Exemplarily, the inner diameter of the first groove 211 is smaller than the inner diameter of the second groove 212, so that the first mounting groove 21 is configured as a stepped groove structure, thereby forming the limiting platform 213. For example, it can be a stepped structure with a turning point between the first groove 211 and the second groove 212. The buckle 31 is located inside the second groove 212. When the first buffer pad 3 is pulled outward, the buckle 31 is locked onto the limiting platform 213, preventing the first buffer pad 3 from detaching from the first mounting groove 21. Optionally, the buckle 31 is a convex ring that extends circumferentially along the first buffer pad 3; or the buckle 31 is a protrusion. In some other embodiments, the limiting platform 213 can be a protrusion that protrudes from the inner wall of the first mounting groove 21 toward the central axis of the first mounting groove 21.
[0060] When the buckle 31 is a convex ring extending circumferentially along the first buffer pad 3, the cross-section of the buckle 31 can be semi-circular, which facilitates the installation of the first buffer pad 3 into the first mounting groove 21.
[0061] In some embodiments, please refer to Figure 2 There is a gap between the buckle 31 and the inner wall of the second groove 212. When the outer peripheral surface of the buckle 31 abuts against the inner wall of the second groove 212, the portion of the first buffer pad 3 corresponding to the buckle 31 cannot expand radially, reducing the deformation of the first buffer pad 3 and weakening its buffering effect. In this embodiment, while ensuring the buckle 31 engages with the limiting platform 213, a gap is maintained between the buckle 31 and the radial sidewall of the second groove 212. When the first buffer pad 3 makes buffering contact with the edge of the first medium opening 12, the portion of the first buffer pad 3 corresponding to the buckle 31 can still expand radially, further improving the problem of weakened buffering effect of the first buffer pad 3.
[0062] In some embodiments, please refer to Figure 2 and Figure 7The outer peripheral surface of the first buffer pad 3 is provided with an abutment portion 32. This abutment portion 32 is a diffusion structure formed by radially extending the end of the first end of the first buffer pad 3. The abutment portion 32 has an outer diameter larger than the opening diameter of the first mounting groove 21, so that the periphery of the opening of the first mounting groove 21 is covered, thereby forming a buffer barrier between the first end face of the valve core 2 and the periphery of the opening of the first medium opening 12, preventing the valve core 2 from moving too fast and directly impacting the periphery of the opening of the first medium opening 12, thus generating noise. Furthermore, the abutment portion 32 prevents the first buffer pad 3 from completely sinking into the first mounting groove 21, keeping the first buffer pad 3 in an embedded manner in the first mounting groove 21, facilitating the installation and removal of the first buffer pad 3, and avoiding the problem of the first medium opening 12 not being sealed due to the first buffer pad 3 sinking into the first mounting groove 21.
[0063] In some embodiments, please refer to Figure 2 and Figure 6 The first mounting groove 21 includes a conical groove 214 communicating with the first section groove 211. The conical groove 214 is connected to the side of the first section groove 211 near the first medium opening 12. The inner diameter of the conical groove 214 gradually decreases, and the end with the smaller inner diameter is in fluid communication with the first section groove 211. An abutment portion 32 extends out of the conical groove 214 along the radial direction of the first mounting groove 21. Exemplarily, the first mounting groove 21 has a chamfer at the opening, thus forming the conical groove 214. When the abutment portion 32 is annular, the inner diameter of the larger end of the conical groove 214 is smaller than the outer diameter of the abutment portion 32, so that the abutment portion 32 extends out of the conical groove 214 along the radial direction of the first mounting groove 21, covering the opening of the first mounting groove 21. By providing the conical groove 214, the chamfered structure of the conical groove 214 facilitates the insertion of the first buffer pad 3 into the first mounting groove 21. Optionally, the angle between the inner circumferential surface of the conical groove 214 and the central axis of the conical groove 214 is 45 degrees.
[0064] In some embodiments, please refer to Figure 2 and Figure 5 A sealing contact surface 17 is provided around the periphery of the first medium opening 12. The sealing contact surface 17 is used to contact the contact portion 32 of the first buffer pad 3, thereby cooperating with the first buffer pad 3 to seal the first medium opening 12.
[0065] In some embodiments, please refer to Figure 2 and Figure 5 A raised wall 18 protruding towards the first buffer pad 3 is provided between the first medium opening 12 and the sealing contact surface 17. The raised wall 18 is used to abut against the first buffer pad 3. The raised wall 18 surrounds the first medium opening 12. By providing the raised wall 18, the sealing effect of the first buffer pad 3 on the first medium opening 12 can be enhanced. Optionally, the angle between the outer side of the raised wall 18 and the sealing contact surface 17 is greater than 90 degrees, that is, the outer side of the raised wall 18 is a slope.
[0066] In some embodiments, particularly as a fluid control device 100 for fluid distribution, such as a two-position three-way solenoid valve, the first conducting state further includes displacement of the valve core 2 to open the second medium opening 13; the second conducting state further includes displacement of the valve core 2 to close the second medium opening 13; see also Figures 2 to 5 The fluid control device 100 also includes a second buffer pad 7, which is disposed at the second end of the valve core 2. The second buffer pad 7 is used to buffer and seal the second medium opening 13 in the second conducting state. By setting the second buffer pad 7, the sealing effect on the second medium opening 13 is enhanced, and the noise from the impact between the valve core 2 and the edge of the second medium opening 13 is reduced.
[0067] The second buffer pad 7 can have the same structure as the first buffer pad 3 and be installed on the valve core 2 in the same way. For example, the second end of the valve core 2 may also have a second mounting groove similar to the first mounting groove 21, and the second buffer pad 7 may be installed through the second mounting groove. A second buffer space exists between the second buffer pad 7 and the inner wall of the second mounting groove at the second end of the valve core 2 to increase the deformability of the second buffer pad 7 when it performs a buffered seal on the second medium opening 13, thereby enhancing the buffering effect of the second buffer pad 7. Alternatively, please refer to... Figure 2 and Figure 7 The valve core 2 has a mounting post 22 at its second end, with an enlarged portion at the end. The second buffer pad 7 has a mounting groove 71 that matches the mounting post 22. The mounting post 22 is disposed within the mounting groove 71, thereby assembling the second buffer pad 7 onto the valve core 2. It is understood that the inner diameter of the opening of the mounting groove 71 is smaller than the inner diameter of the inner portion of the mounting groove 71, to allow the enlarged portion of the mounting post 22 to engage with the mounting groove 71 of the second buffer pad 7. Optionally, the second buffer pad 7 is made of materials such as rubber or silicone.
[0068] Secondly, this utility model embodiment provides a valve module (not shown), which includes a fluid control device 100. The valve module is an assembly integrating multiple fluid control valves, such as two-position three-way solenoid valves, three-position three-way solenoid valves, etc. Each fluid control valve can respectively realize fluid directional delivery control, and at least one of the multiple fluid control valves uses the aforementioned fluid control device 100. Furthermore, the multiple fluid control valves of the valve module have a centralized air supply path, and the valve module may also include a pressure regulating valve located in the air supply path, which can also use the aforementioned fluid control device 100. By employing the aforementioned fluid control device 100, and based on the buffer space provided between the first buffer pad 3 and / or the second buffer pad 7 of the fluid control device 100 and the inner wall of the corresponding mounting groove, the vibration and noise generated by the valve module are reduced.
[0069] Thirdly, this utility model embodiment provides a pneumatic comfort system (not shown). The pneumatic comfort system includes an air source device (not shown), several air bags (not shown), and a valve module. The air source device is fluidly connected to the several air bags through the valve module. Specifically, multiple fluid control valves of the valve module are fluidly connected to one air bag respectively, controlling the inflation and deflation of the corresponding air bag. The valve module is used to control the opening and closing of the air path between the air source device and the several air bags, thereby controllably supplying air to the air bags, causing the air bags to inflate. The valve module is also used to fluidly connect the air bags to the external environment or a negative pressure device, causing the air bags to deflate and contract. Furthermore, the fluid control valves of the valve module can also control the pressure of the gas filled into the air bags. Through the expansion, contraction, and pressure maintenance of the air bags, pneumatic massage and pneumatic support can be achieved. The pressure regulating valve set in the valve module can regulate the gas pressure in the air supply path.
[0070] The valve module includes valves for controlling the inflation and deflation of air bags and valves for regulating air pressure. These can utilize the aforementioned fluid control device 100. The buffer space between the first buffer pad 3 and / or the second buffer pad 7 of the fluid control device 100 and the inner wall of the corresponding mounting groove reduces valve noise, thereby reducing vibration and noise generated by the pneumatic comfort system and improving the user experience. Several air bags can be independently fluidly connected to the respective fluid control valves in the valve module, allowing for independent inflation and deflation of multiple air bags.
[0071] 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; under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail; although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and 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.
Claims
1. A fluid control device, characterized by, include: The valve body is provided with a conduction chamber and a first medium opening and a second medium opening that are in fluid communication with the conduction chamber; The valve core is located in the conduction chamber; The fluid control device has a first conducting state that causes the valve core to displace and close the first medium opening, and a second conducting state that causes the valve core to displace and open the first medium opening; the first end of the valve core is provided with a first mounting groove. A first buffer pad is embedded in the first mounting groove. The first buffer pad is used to buffer and seal the first medium opening in the first conductive state. There is a first buffer space between the first buffer pad and the inner wall of the first mounting groove.
2. The fluid control device according to claim 1, characterized in that, The first mounting groove includes a first section groove and a second section groove that are interconnected. The first section groove is adjacent to the first medium opening, and the second section groove is away from the first medium opening. The first buffer pad passes through the first section groove and is fitted into the second section groove. The first buffer pad is interference-fitted with the first groove. There is a first buffer space between the first buffer pad and the inner wall of the second groove.
3. The fluid control device according to claim 2, characterized in that, The inner diameter of the first groove is smaller than the inner diameter of the second groove; The end of the first buffer pad abuts against the bottom wall of the second groove, and the first buffer pad has a first buffer space in the radial direction between itself and the inner wall of the second groove.
4. The fluid control device according to claim 2, characterized in that, A limiting platform is provided between the first segment groove and the second segment groove, and a buckle is provided on the outer periphery of the first buffer pad. The buckle engages with the limiting platform to prevent the first buffer pad from detaching from the first mounting groove.
5. The fluid control device according to claim 1, characterized in that, The first conduction state also includes the valve core displacement opening the second medium opening; The second conduction state also includes the valve core displacement closing the second medium opening; The fluid control device further includes a second buffer pad, which is disposed at the second end of the valve core. The second buffer pad is used to buffer and seal the second medium opening in the second conducting state.
6. The fluid control device according to claim 5, characterized in that, The valve core is provided with a second mounting groove at its second end; The second buffer pad is embedded in the second mounting groove, and there is a second buffer space between the second buffer pad and the inner wall of the second mounting groove.
7. The fluid control device according to claim 1, characterized in that, It also includes an actuator for actuating the valve core to close or open the first medium opening.
8. The fluid control device according to claim 1, characterized in that, It also includes an elastic reset element, which is used to cause the valve core to normally open or close the first medium opening.
9. The fluid control device according to any one of claims 1 to 8, characterized in that, The valve body is further provided with a third medium opening that is in fluid communication with the conduction chamber; in the first conduction state, the third medium opening is in communication with the second medium opening; in the second conduction state, the third medium opening is in communication with the first medium opening.
10. A valve module characterized by Includes the fluid control device as described in any one of claims 1 to 9.
11. A pneumatic comfort system characterized in that, include: Gas source device; Several air bags; The valve module as described in claim 10, wherein the gas source device is in fluid communication with a plurality of the gas bags through the valve module.