Valve body, pneumatic comfort system and seat

Abstract

The application relates to the technical field of valve bodies, in particular to a valve body, a pneumatic comfort system and a seat. The valve body comprises a shell, a first valve chamber and a second valve chamber enclosed in the shell, the first valve chamber and the second valve chamber are sealed and separated, the first valve chamber is provided with a plurality of valve ports, the second valve chamber is provided with a plurality of valve ports, the valve ports in the first valve chamber are in one-to-one fluid communication with the valve ports in the second valve chamber through fluid channels, valve core supports are arranged in the first valve chamber and the second valve chamber, a plurality of valve assemblies are arranged on the valve core supports, the valve assemblies in the first valve chamber are used for one-to-one opening or closing of the valve ports in the first valve chamber, and the valve assemblies in the second valve chamber are used for one-to-one opening or closing of the valve ports in the second valve chamber. Through the above mode, when the valve body is assembled, the valve rod is first installed on the valve core support, and then the valve core support is installed on the shell, so that the installation of the valve rod is facilitated, and the problem of difficult assembly of the valve rod is improved.

Description

Technical Field

[0001] This application relates to the field of valve body technology, and more particularly to a valve body, a pneumatic comfort system, and a seat. Background Technology

[0002] Seats are typically equipped with a seat comfort system to provide comfort for occupants. This system includes an air pump, air valves, and air bags. The air pump controls the airflow through the air valves, switching the air path to control the expansion and contraction of the air bags, thus providing a massage effect to the occupant.

[0003] In related technologies, the valve body includes a housing, a valve stem, an SMA wire, and a circuit board. The housing has a valve cavity, within which the circuit board, valve stem, and SMA wire are housed. The circuit board powers the SMA wire to drive the valve stem. The housing has a valve port; the valve stem seals and opens the valve port, enabling the valve body to switch and control the airflow. However, the limited space within the valve cavity makes valve stem assembly difficult. Utility Model Content

[0004] The embodiments of this application aim to provide a valve body, a pneumatic comfort system, and a seat, so as to at least improve the problem of difficult valve stem assembly.

[0005] In order to solve the above-mentioned technical problems, the embodiments of this application adopt the following technical solutions:

[0006] In a first aspect, embodiments of this application provide a valve body, the valve body including a housing and a first valve chamber and a second valve chamber enclosed within the housing, the first valve chamber and the second valve chamber being sealed and separated, the first valve chamber having a plurality of valve ports, the second valve chamber having a plurality of valve ports, the valve ports in the first valve chamber being fluidly connected to the valve ports in the second valve chamber one-to-one through provided fluid channels, each of the fluid channels being sealed and separated from each other, and each of the fluid channels having a normally open port, the normally open port being fluidly connected to a user connector provided on the housing, the side wall of the first valve chamber also having a fluid inlet, the first valve chamber and the second valve chamber each having a valve core support, the valve core support having a plurality of valve assemblies, the valve assemblies in the first valve chamber being used to open or close the valve ports in the first valve chamber one-to-one, the valve assemblies in the second valve chamber being used to open or close the valve ports in the second valve chamber one-to-one.

[0007] In some embodiments, the valve core support has a first boss and a second boss spaced apart along a first direction. The first boss has a first guide hole, and the second boss has a second guide hole. The valve assembly includes a valve stem, a reset member, and an actuator. The valve stem passes through the first guide hole and the second guide hole. The valve stem has a first stop and a second stop, which are located on opposite sides of the first boss along the first direction. The distance between the first stop and the second stop along the first direction is greater than the width of the first boss along the first direction. One end of the reset member abuts against the valve core support, and the other end abuts against the valve stem. The reset member is used to drive the valve stem to move closer to the valve port to seal the valve port. One end of the actuator is connected to the housing, and the other end of the actuator is connected to the valve stem. The actuator is used to drive the valve stem away from the valve port. The second stop is located between the first boss and the second boss. The second stop is used to deform radially along the valve stem to pass through the first guide hole during the installation of the valve stem on the valve core support.

[0008] In some embodiments, the valve stem has a stepped surface facing the second boss, one end of the reset member abuts against the stepped surface, and the other end of the reset member abuts against the second boss; one end of the actuator is connected to the valve stem, and the other end of the actuator is connected to the housing on the side of the second boss away from the first boss, and the actuator is used to retract to drive the valve stem away from the valve port.

[0009] In some embodiments, the housing is provided with a plug-in hole and a third stop portion, the valve core bracket is provided with a plug-in post, the plug-in post is inserted into the plug-in hole along a first direction, and the third stop portion abuts against the valve core bracket to prevent the plug-in post from disengaging from the plug-in hole; the third stop portion is provided with a guide slope, the guide slope being used to install the valve core bracket in the housing along the first direction.

[0010] In some embodiments, the housing is provided with a snap-fit ​​seat, the snap-fit ​​seat is provided with a snap-fit ​​groove, the actuator includes an actuator wire and a snap-fit ​​member, the snap-fit ​​member is detachably disposed in the snap-fit ​​groove; the two ends of the actuator wire are respectively connected to two snap-fit ​​members; the valve stem is provided with a hook portion, and the actuator wire is wound around the hook portion.

[0011] In some embodiments, the hook bends away from the snap-fit ​​seat, and the width of the hook gradually decreases in the direction toward the end.

[0012] In some embodiments, the actuating wire is made of shape memory alloy; the snap-fit ​​component has a conductive spring that protrudes from the snap-fit ​​base and is electrically connected to the actuating wire; the valve body further includes a circuit board that is disposed in the housing and contacts and conducts electricity with the conductive spring.

[0013] In some embodiments, the housing is provided with a plurality of fluid channels and a plurality of valve ports, each of the plurality of fluid channels being in fluid communication with the first valve chamber and the second valve chamber through two of the valve ports respectively; the valve body includes a plurality of valve assemblies, the plurality of valve assemblies being used to seal or open the plurality of valve ports in a one-to-one correspondence.

[0014] In some embodiments, please refer to Figure 3 and Figure 4 The housing includes a first wall, which is flat, and the valve port is located on the first wall.

[0015] Secondly, embodiments of this application provide a pneumatic comfort system, the pneumatic comfort system including an air source device, a plurality of air bags and a valve body as described in any of the above; the air source device is in fluid communication with the fluid inlet; the plurality of air bags are respectively in fluid communication with the plurality of user connectors.

[0016] Thirdly, embodiments of this application provide a seat, the seat including the pneumatic comfort system.

[0017] In the valve body assembly of this application embodiment, the valve stem is first installed on the valve core bracket, and then the valve core bracket is installed on the housing, which facilitates the installation of the valve stem and improves the problem of difficult valve stem assembly.

[0018] When installing the valve stem onto the valve core bracket, simply pass the valve stem through the first guide hole and the second guide hole in sequence, and then pass the second stop through the first guide hole. This simplifies the valve stem installation process and improves the difficulty of valve stem assembly. The first and second guide holes improve the accuracy of the valve stem installation on the valve core bracket, ensuring alignment between the valve stem and the valve port, thus addressing the issue of low valve stem assembly accuracy.

[0019] When installing the valve core bracket onto the housing, simply insert the plug into the plug hole and pass the valve core bracket over the third stop, simplifying the installation steps of the valve core bracket.

[0020] The valve stems are mounted on the valve core brackets in the same direction, and the valve core brackets are mounted on the housing in the same direction, which facilitates the installation of the valve stems and valve core brackets.

[0021] The valve core support is inserted into the plug hole in the opposite direction to the direction in which the actuator drives the valve stem to move. When the valve core support is installed and the valve stem contacts the housing, the force exerted by the housing on the valve stem causes the reset element to deform, thereby improving the problem of valve stem damage.

[0022] The actuator is detachably connected to the housing via a snap-fit ​​connector. The actuator's actuation wire is wound around the hook of the valve stem, facilitating actuator installation. The snap-fit ​​connector contacts and conducts electricity to the circuit board via a conductive spring, eliminating the need for soldering and minimizing the risk of damaging the actuator.

[0023] The pneumatic comfort system features the aforementioned valve body, which inflates, deflates, and maintains pressure in the airbag, thereby providing massage and support. The pneumatic comfort system also benefits from the valve body, which will not be elaborated upon here.

[0024] The seat is equipped with the aforementioned pneumatic comfort system, which provides massage to the occupants. The seat also features the beneficial effects of the valve body, which will not be elaborated upon here.

[0025] The above description is merely an overview of the technical solution of this application. In order to better understand the technical means of this application 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 application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0026] 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.

[0027] Figure 1 This is a schematic diagram of the valve body according to an embodiment of this application;

[0028] Figure 2 This is an exploded view of the valve body according to an embodiment of this application;

[0029] Figure 3 yes Figure 2 Exploded view of a portion of the valve body structure;

[0030] Figure 4 yes Figure 3 An exploded view of the valve body from another perspective;

[0031] Figure 5 yes Figure 3 Exploded view of the valve core support and valve assembly.

[0032] The reference numerals in the detailed embodiments are as follows:

[0033] 100. Valve body;

[0034] 1. Housing; 11. First valve chamber; 12. Second valve chamber; 13. Fluid passage; 14. Valve port; 15. Upper shell; 16. Lower shell; 161. First valve groove; 162. Second valve groove; 163. Fluid groove; 164. Air inlet nozzle; 165. User connector; 166. Vent; 167. Mounting groove; 17. Silencing component; 18. Snap-fit ​​seat; 181. Snap-fit ​​groove; 19. Insertion hole; 1a. Third stop; 1a1. Guide slope; 1b. First wall;

[0035] 2. Valve core bracket; 21. First boss; 211. First guide hole; 22. Second boss; 221. Second guide hole; 23. Insertion post;

[0036] 3. Valve assembly; 31. Valve stem; 311. First stop; 312. Second stop; 313. Stepped surface; 314. Hook; 32. Reset member; 33. Actuator; 331. Actuating wire; 332. Snap-fit ​​member; 3321. Conductive spring;

[0037] 4. Circuit board;

[0038] X, the first direction. Detailed Implementation

[0039] To facilitate understanding of this application, the following description, in conjunction with the accompanying drawings and specific embodiments, will provide a more detailed account. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. 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 one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them.

[0040] 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 application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0041] In the description of the embodiments of this application, 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 application 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. Therefore, they should not be construed as limitations on the embodiments of this application.

[0042] In the description of the embodiments of this application, 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 application. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0043] 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 application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0044] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0045] Please see Figure 1 and Figure 2 This application provides a valve body 100, which includes a housing 1, a valve core support 2, and at least two valve assemblies 3. The valve core support 2 is mounted on the housing 1, and the valve assemblies 3 are mounted on the valve core support 2. The housing 1 is in fluid communication with a gas source device, the component to be inflated, and the external environment. The valve assemblies 3 are movable relative to the housing 1 to change the fluid communication state between the component to be inflated and the gas source device and the external environment, thereby realizing the inflation, deflation, and pressure maintenance of the component to be inflated. Alternatively, the housing 1 may not be in fluid communication with the external environment but may be in fluid communication with a negative pressure device to enhance the deflation effect of the component to be inflated.

[0046] For housing 1 mentioned above, please refer to Figure 3 and Figure 4The housing 1 encloses a first valve chamber 11 and a second valve chamber 12, which are sealed and separated. The first valve chamber 11 and the second valve chamber 12 each have multiple valve ports 14. The valve ports 14 in the first valve chamber 11 are fluidly connected to the valve ports 14 in the second valve chamber 12 through fluid channels 13, which are mutually sealed and each has a normally open port. A fluid inlet is also provided on the side wall of the first valve chamber 11. Both the first and second valve chambers 11 and 12 are equipped with valve core supports 2, which have multiple valve assemblies 3. The valve assemblies 3 in the first valve chamber 11 are used to open or close the valve ports 14 in the first valve chamber 11, and the valve assemblies 3 in the second valve chamber 12 are used to open or close the valve ports 14 in the second valve chamber 12.

[0047] The system includes a first valve chamber 11 for fluid communication with a gas source device via a fluid inlet, a second valve chamber 12 for fluid communication with a negative pressure device or the external environment, and a fluid channel 13 for fluid communication with the component to be inflated via a normally open port. The gas source device can be an air pump, which introduces gas into the first valve chamber 11. When the valve port 14 in the first valve chamber 11 is open and the valve port 14 in the second valve chamber 12 is closed, gas is introduced into the component to be inflated (which can be an air bladder), causing it to inflate. When the valve port 14 in the second valve chamber 12 is open and the valve port 14 in the first valve chamber 11 is closed, gas is discharged from the component to be inflated into the second valve chamber 12, causing it to deflate and contract. When both the valve ports 14 in the first and second valve chambers 11 are closed, the component to be inflated is pressurized. By providing multiple fluid channels 13, and multiple sets of valve ports 14 and valve assemblies 3 corresponding to these fluid channels 13, multiple components to be inflated can be independently inflated and deflated.

[0048] In some embodiments, please refer to Figures 2 to 4 The housing 1 includes an upper housing 15 and a lower housing 16. The lower housing 16 is provided with a first valve groove 161, a second valve groove 162, and a fluid groove 163. The upper housing 15 and the lower housing 16 are fastened together. The upper housing 15 and the lower housing 16 enclose each other at the first valve groove 161 to form a first valve chamber 11, at the second valve groove 162 to form a second valve chamber 12, and at the fluid groove 163 to form a fluid channel 13. Both the upper housing 15 and the lower housing 16 can be injection molded, reducing the manufacturing cost of the housing 1. Optionally, the upper housing 15 and the lower housing 16 are connected by snap-fit ​​or adhesive.

[0049] In some embodiments, please refer to Figures 2 to 4The lower housing 16 is provided with an air inlet nozzle 164 and a user connector 165. The air inlet nozzle 164 is in fluid communication with the fluid inlet of the first valve chamber 11, that is, the air inlet nozzle 164 is in fluid communication with the first valve chamber 11. The normally open port is in fluid communication with the user connector 165, that is, the user connector 165 is in fluid communication with the fluid channel 13. The air inlet nozzle 164 is used to connect to the pipeline, which facilitates the fluid communication between the first valve chamber 11 and the air source device; the user connector 165 is used to connect to the pipeline, which facilitates the fluid communication between the fluid channel 13 and the component to be filled.

[0050] In some embodiments, please refer to Figures 2 to 4 The lower shell 16 is provided with a vent 166. When the upper shell 15 and the lower shell 16 are fastened together, the vent 166 connects the second valve chamber 12 with the external environment, so that the gas in the second valve chamber 12 can be directly discharged to the external environment.

[0051] In some embodiments, please refer to Figures 2 to 4 The housing 1 also includes a sound-absorbing component 17, which covers the vent 166. Exemplarily, the lower housing 16 has a mounting groove 167 communicating with the vent 166. The sound-absorbing component 17 is disposed within the mounting groove 167, thereby covering the vent 166. The sound-absorbing component 17 can be a sound-absorbing sheet, sound-absorbing cotton, etc. The sound-absorbing component 17 can reduce the noise generated when the second valve chamber 12 exhausts gas to the external environment through the vent 166, reducing adverse effects on surrounding personnel. It is understood that the sound-absorbing component 17 is gas-permeable.

[0052] For the valve core bracket 2 mentioned above, please refer to Figures 3 to 5The valve core support 2 has a first boss 21 and a second boss 22 spaced apart along a first direction X. The first boss 21 has a first guide hole 211, and the second boss 22 has a second guide hole 221. The valve assembly 3 includes a valve stem 31, a reset member 32, and an actuator 33. The valve stem 31 passes through the first guide hole 211 and the second guide hole 221. The valve stem 31 has a first stop portion 311 and a second stop portion 312, which are located on opposite sides of the first boss 21 along the first direction X. The distance between the first stop portion 311 and the second stop portion 312 along the first direction X is greater than the width of the first boss 21 along the first direction X. The valve stem 31 is slidably mounted on the valve core support 2 through the first guide hole 211 and the second guide hole 221. When assembling the valve body 100, the valve stem 31 is first installed on the valve core support 2, and then the valve core support 2 is installed on the housing 1, which facilitates the installation of the valve stem 31. The first guide hole 211 and the second guide hole 221 improve the accuracy of the valve stem 31 installation on the valve core support 2, ensuring that the valve stem 31 is aligned with the valve port 14 and addressing the issue of low assembly accuracy of the valve stem 31. Optionally, the first guide hole 211 and the second guide hole 221 are spaced apart along a first direction X, and the sliding direction of the valve stem 31 relative to the valve core support 2 is parallel to the first direction X. Optionally, a sealing block is provided at the end of the valve stem 31, and the sealing port is used to seal the valve port 14, enhancing the sealing effect on the valve port 14.

[0053] In related technologies, the valve stem 31 is directly installed inside the housing 1. Due to the limited space inside the housing 1, the installation of the valve stem 31 is difficult. However, in this embodiment, the valve stem 31 is installed on the housing 1 via the valve core bracket 2. When assembling the valve body 100, the valve stem 31 can be installed on the valve core bracket 2 first, and then the valve core bracket 2 can be installed on the housing 1, which facilitates the installation of the valve stem 31 and improves the problem of difficult assembly of the valve stem 31. The first guide hole 211 and the second guide hole 221 improve the accuracy of the valve stem 31 being installed on the valve core bracket 2, so that the valve stem 31 is aligned with the valve port 14, thus improving the problem of low assembly accuracy of the valve stem 31.

[0054] Regarding the aforementioned reset member 32 and actuator 33, one end of the reset member 32 abuts against the valve core support 2, and the other end of the reset member 32 abuts against the valve stem 31. The reset member 32 is used to drive the valve stem 31 to move closer to the valve port 14 to seal the valve port 14. One end of the actuator 33 is connected to the housing 1, and the other end of the actuator 33 is connected to the valve stem 31. The actuator 33 is used to drive the valve stem 31 away from the valve port 14. For example, please refer to [reference needed]. Figure 4 and Figure 5The valve stem 31 has a stepped surface 313 facing the second boss 22. One end of the reset member 32 abuts against the stepped surface 313, and the other end of the reset member 32 abuts against the second boss 22. One end of the actuator 33 is connected to the valve stem 31, and the other end of the actuator 33 is connected to the housing 1 on the side of the second boss 22 away from the first boss 21. The actuator 33 is used to retract to drive the valve stem 31 away from the valve port 14. Optionally, the reset member 32 is a straight spring. Optionally, the actuator 33 includes an SMA (shape memory alloy) wire.

[0055] Understandably, the reset member 32 applies a thrust toward the valve stem 31 in the first direction X, causing the valve stem 31 to abut against the edge of the valve port 14, thereby sealing the valve port 14; when the actuator 33 retracts, it drives the valve stem 31 to move relative to the housing 1 in the opposite direction of the first direction X, causing the valve stem 31 to move away from the valve port 14, and the valve port 14 to open; when the actuator 33 expands, the reset member 32 drives the valve stem 31 again to seal the valve port 14.

[0056] In some other embodiments, the reset member 32 is used to apply a pulling force toward the valve port 14 to the valve stem 31, and the actuator 33 is used to apply a pushing force away from the valve port 14 to the valve stem 31.

[0057] In some embodiments, please refer to Figure 5 The second stop portion 312 is located between the first boss 21 and the second boss 22. The second stop portion 312 is used to deform radially along the valve stem 31 to pass through the first guide hole 211 during the process of installing the valve stem 31 onto the valve core bracket 2. Exemplarily, the second stop portion 312 is rod-shaped, with one end connected to the body of the valve stem 31, and the angle between the side of the second stop portion 312 adjacent to the first stop portion 311 and the body of the valve stem 31 is an acute angle.

[0058] During the installation of the valve stem 31 onto the valve core bracket 2, the second stop 312 deforms towards the valve stem 31 body under the reaction force of the inner wall of the first guide hole 211, allowing the second stop 312 to pass through the first guide hole 211. After the second stop 312 passes through the first guide hole 211, it returns to its original shape, preventing the valve stem 31 from moving in the opposite direction of the installation direction, thereby preventing the valve stem 31 from detaching from the valve core bracket 2, thus ensuring that the valve stem 31 is installed on the valve core bracket 2. In other words, during the installation of the valve stem 31 onto the valve core bracket 2, it is only necessary to pass the valve stem 31 through the first guide hole 211 and the second guide hole 221 in sequence, and then pass the second stop 312 through the first guide hole 211, simplifying the installation steps of the valve stem 31. When disassembling the valve stem 31, simply press the second stop 312 with external force to make it avoid the first boss 21, and then move the valve stem 31 relative to the valve core bracket 2 along the first direction X.

[0059] In some embodiments, please refer to Figures 3 to 5 The housing 1 is provided with a snap-fit ​​seat 18, and the snap-fit ​​seat 18 is provided with a snap-fit ​​groove 181. The actuator 33 includes an actuator wire 331 and a snap-fit ​​member 332. The snap-fit ​​member 332 is detachably disposed in the snap-fit ​​groove 181. The two ends of the actuator wire 331 are respectively connected to the two snap-fit ​​members 332. The valve stem 31 is provided with a hook portion 314, and the actuator wire 331 is wound around the hook portion 314. The actuator 33 is detachably connected to the snap-fit ​​seat 18 of the housing 1 through the snap-fit ​​member 332. The actuator wire 331 of the actuator 33 is wound around the hook portion 314 of the valve stem 31, which facilitates the installation of the actuator 33. Moreover, one end of the actuator 33 is fixed by the snap-fit ​​seat 18, which can improve the problem of easy desoldering between the actuator 33 and the circuit board 4 compared to soldering one end of the actuator 33 to the circuit board 4. Optionally, the actuator 33 includes two snap-fit ​​members 332, which are respectively connected to both ends of the actuating wire 331. The middle part of the actuating wire 331 only needs to pass around the hook portion 314. Optionally, the opening direction of the snap-fit ​​groove 181 is opposite to that of the valve stem 31, that is, the snap-fit ​​member 332 is installed on the snap-fit ​​seat 18 in the direction towards the valve stem 31, thereby preventing the snap-fit ​​member 332 from disengaging from the snap-fit ​​groove 181 under the pull of the actuating wire 331.

[0060] In some embodiments, please refer to Figures 3 to 5 The hook portion 314 bends away from the latching seat 18, and its width gradually decreases towards the end. The width direction of the hook portion 314 refers to the direction perpendicular to the extension of the hook portion 314 and the direction perpendicular to the tension of the actuating wire 331. In this embodiment, the tension direction of the actuating wire 331 is parallel to the first direction X. When installing the actuator 33, the latching member 332 can be installed on the latching seat 18 first, and then the actuating wire 331 can be wound around the hook. During this process, the actuating wire 331 needs to go around the end of the hook portion 314, resulting in a longer compression length for the reset member 32. In this embodiment, the width of the hook portion 314 gradually decreases towards the end, making it easier for the actuating wire 331 to go around the end of the hook portion 314, and the compression length of the reset member 32 can be appropriately shortened, reducing the assembly difficulty of the actuating wire 331.

[0061] In some embodiments, please refer to Figures 2 to 5The actuating wire 331 is made of shape memory alloy. The snap-fit ​​component 332 has a conductive spring 3321, which protrudes from the snap-fit ​​base 18 and is electrically connected to the actuating wire 331. The valve body 100 also includes a circuit board 4, which is disposed on the housing 1 and contacts and conducts electricity with the conductive spring 3321. When the shape memory alloy is electrically heated, it will recover its deformation. In this embodiment, the actuating wire 331 is in a contracted state, so when the actuating wire 331 is electrically heated, it will contract. The snap-fit ​​component 332 contacts and conducts electricity with the circuit board 4 through the conductive spring 3321, eliminating the need for soldering, reducing the risk of damaging the actuating component 33, and facilitating the assembly and disassembly of the circuit board 4 and the actuating component 33. Optionally, the conductive spring 3321 is made of metal, such as copper or stainless steel.

[0062] In some embodiments, the latching member 332 is made entirely of conductive material. Connecting the actuating wire 331 to the latching member 332 electrically connects the actuating wire 331 to the conductive spring 3321. Optionally, the latching member 332 is made of metal, such as copper or stainless steel.

[0063] In some embodiments, the valve core support 2 is detachably disposed on the housing 1. For example, please refer to... Figures 3 to 5 The housing 1 has a insertion hole 19 and a third stop portion 1a. The valve core support 2 has a insertion post 23. The insertion post 23 is inserted into the insertion hole 19 along a first direction X. The third stop portion 1a abuts against the valve core support 2 to prevent the insertion post 23 from disengaging from the insertion hole 19. For example, the third stop portion 1a abuts against the side of the valve core support 2 opposite to the first direction X, thereby preventing the insertion post 23 from disengaging from the insertion hole 19, allowing the valve core support 2 to be mounted on the housing 1. Furthermore, the direction in which the insertion post 23 of the valve core support 2 is inserted into the insertion hole 19 is opposite to the direction in which the actuator 33 drives the valve stem 31 to move. When the valve core support 2 is installed and the valve stem 31 contacts the housing 1, the force exerted by the housing 1 on the valve stem 31 causes the reset member 32 to deform, thereby improving the problem of valve stem 31 damage. Optionally, there are multiple insertion holes 19 and insertion posts 23 to increase the stability of the connection between the valve core support 2 and the housing 1. It is understood that a valve core support 2 can be used to mount one or more valve stems 31, that is, the number of valve core supports 2 can be one or more. Optionally, there can be two valve core supports 2, which are respectively located in the first valve chamber 11 and the second valve chamber 12.

[0064] In some embodiments, the third stop portion 1a is provided with a guide slope 1a1, which is used to mount the valve core support 2 in the housing 1 along the first direction X. For example, please refer to... Figure 3 and Figure 4One end of the third stop 1a is connected to the body of the housing 1. The angle between the side of the third stop 1a adjacent to the valve core support 2 and the body of the housing 1 is an acute angle. The guide slope 1a1 is located on the side of the third stop 1a away from the valve core support 2. Therefore, the angle between the guide slope 1a1 and the body of the housing 1 is an obtuse angle.

[0065] During the installation of the valve core bracket 2, the valve core bracket 2 contacts the guide slope 1a1. Guided by the guide slope 1a1, the valve core bracket 2 can pass over the third stop 1a, and the insertion post 23 can be inserted into the insertion hole 19, so that the valve core bracket 2 can be detachably installed on the housing 1. During the process, the third stop 1a and / or the valve core bracket 2 can deform, so that the third stop 1a and the valve core bracket 2 avoid each other, which is conducive to the valve core bracket 2 passing over the third stop 1a. After the valve core bracket 2 passes over the third stop 1a, the third stop 1a and / or the valve core bracket 2 restores its deformation. The third stop 1a abuts against the valve core bracket 2 to prevent the valve core bracket 2 from moving relative to the housing 1 in the opposite direction of the first direction X, thereby preventing the insertion post 23 from disengaging from the insertion hole 19, so that the valve core bracket 2 is installed on the housing 1. When installing the valve core bracket 2 onto the housing 1, simply insert the plug pin 23 into the plug hole 19 and move the valve core bracket 2 past the third stop portion 1a, simplifying the installation steps. When disassembling the valve core bracket 2, simply press the third stop portion 1a with external force to make it avoid the valve core bracket 2, and then move the valve core bracket 2 relative to the housing 1 in the opposite direction of the first direction X, reducing the difficulty of disassembling the valve core bracket 2. Optionally, the cross-section of the third stop portion 1a is triangular.

[0066] In some embodiments, please refer to Figure 4 and Figure 5 The housing 1 includes a first wall 1b, which is flat, and a valve port 14 is disposed on the first wall 1b. For example, the first wall 1b is perpendicular to the first direction X. Thus, the valve stems 31 can all abut against the edge of the first wall 1b at the valve port 14 perpendicular to the first wall 1b to seal the corresponding valve port 14. That is, multiple valve stems 31 can be arranged parallel to each other on the valve core support 2, that is, multiple valve stems 31 are installed on the valve core support 2 in the same direction, which facilitates the installation of the valve stems 31. When there are multiple valve core supports 2, all multiple valve core supports 2 are installed on the housing 1 along the first direction X, which facilitates the installation of the valve core supports 2.

[0067] In some embodiments, please refer to Figure 4 and Figure 5 The valve ports 14 are arranged at intervals along a straight line. Thus, multiple valve stems 31 are arranged along a straight line, and the housing 1 can be designed as a whole to be flat, with a small structural size, which is suitable for layout in a seat.

[0068] Based on the same inventive concept, this application also provides a pneumatic comfort system (not shown), which includes an air source device (not shown), multiple air bags (not shown), and a valve body 100; the air source device is in fluid communication with a fluid inlet; the multiple air bags are respectively in fluid communication with multiple user connectors 165. The pneumatic comfort system has the structural features and beneficial effects of the valve body 100, which will not be described in detail here.

[0069] Based on the same inventive concept, this application also provides a seat (not shown), which includes a pneumatic comfort system. The seat has the structural features and beneficial effects of the valve body 100, which will not be described in detail here.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them; under the concept of this application, 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 application as described above, which are not provided in detail for the sake of brevity; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for 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 application.

Claims

1. A valve body, characterized in that, The device includes a housing and a first valve chamber and a second valve chamber enclosed within the housing. The first valve chamber and the second valve chamber are sealed and separated. The first valve chamber has multiple valve ports, and the second valve chamber has multiple valve ports. The valve ports in the first valve chamber are fluidly connected to the valve ports in the second valve chamber through fluid channels. Each fluid channel is sealed and separated from the others, and each fluid channel has a normally open port. The normally open port is fluidly connected to a user connector on the housing. The side wall of the first valve chamber also has a fluid inlet. Both the first valve chamber and the second valve chamber have valve core supports with multiple valve assemblies. The valve assemblies in the first valve chamber are used to open or close the valve ports in the first valve chamber, and the valve assemblies in the second valve chamber are used to open or close the valve ports in the second valve chamber.

2. The valve body according to claim 1, characterized in that, The valve core support is provided with a first boss and a second boss spaced apart along a first direction. The first boss is provided with a first guide hole, and the second boss is provided with a second guide hole. The valve assembly includes a valve stem, a reset member, and an actuator. The valve stem passes through the first guide hole and the second guide hole, and has a first stop and a second stop. The first stop and the second stop are located on opposite sides of the first boss along the first direction, and the distance between the first stop and the second stop along the first direction is greater than the width of the first boss along the first direction. One end of the reset member abuts against the valve core bracket, and the other end abuts against the valve stem. The reset member is used to drive the valve stem to move closer to the valve port to seal the valve port. One end of the actuator is connected to the housing, and the other end of the actuator is connected to the valve stem. The actuator is used to drive the valve stem away from the valve port. The second stop portion is located between the first boss and the second boss, and the second stop portion is used to deform radially along the valve stem to pass through the first guide hole during the process of the valve stem being installed on the valve core bracket.

3. The valve body according to claim 2, characterized in that, The valve stem has a stepped surface facing the second boss, one end of the reset member abuts against the stepped surface, and the other end of the reset member abuts against the second boss; One end of the actuator is connected to the valve stem, and the other end of the actuator is connected to the housing on the side of the second boss away from the first boss. The actuator is used to retract to drive the valve stem away from the valve port.

4. The valve body according to claim 1, characterized in that, The housing is provided with a plug-in hole and a third stop portion. The valve core bracket is provided with a plug-in post. The plug-in post is inserted into the plug-in hole along a first direction. The third stop portion abuts against the valve core bracket to prevent the plug-in post from disengaging from the plug-in hole. The third stop portion is provided with a guide slope. The guide slope is used to install the valve core bracket in the housing along the first direction.

5. The valve body according to claim 2, characterized in that, The housing is provided with a snap-fit ​​seat, the snap-fit ​​seat is provided with a snap-fit ​​groove, the actuator includes an actuator wire and a snap-fit ​​member, and the snap-fit ​​member is detachably disposed in the snap-fit ​​groove; The two ends of the actuation wire are respectively connected to the two snap-fit ​​components; The valve stem is provided with a hook, and the actuating wire is wound around the hook.

6. The valve body according to claim 5, characterized in that, The hook bends away from the snap-fit ​​seat, and the width of the hook gradually decreases towards the end.

7. The valve body according to claim 5, characterized in that, The actuating wire is made of shape memory alloy. The snap-fit ​​component has a conductive spring that protrudes from the snap-fit ​​base and is electrically connected to the actuation wire. The valve body also includes a circuit board, which is disposed in the housing and is in contact with and connected to the conductive spring.

8. The valve body according to claim 1, characterized in that, The housing includes a first wall, which is flat, and the valve port is located on the first wall.

9. A pneumatic comfort system, characterized in that, include: Valve body as described in any one of claims 1 to 8; The gas source device is in fluid communication with the fluid inlet; Multiple air bags are in fluid communication with multiple user connectors, respectively.

10. A type of seat, characterized in that, Includes the pneumatic comfort system as described in claim 9.

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