Fluid distribution device, air source device and pneumatic comfort system

Abstract

The embodiment of the utility model relates to the technical field of fluid distribution, and particularly discloses a fluid distribution device, an air source device and a pneumatic comfort system.The fluid distribution device comprises a seat body, a plurality of switching assemblies, a rotor and a driver, each fluid distribution unit comprises a first medium opening, a second medium opening, a third medium opening, a first valve port and a second valve port, the switching assembly is arranged at the relative positions of the seat body and the first valve port and the second valve port, the rotor is rotationally arranged in the seat body and abuts against the switching assembly, and the driver is connected to the rotor. At the same time, at most one of the first valve port and the second valve port is opened. According to the embodiment of the utility model, the rotor is driven to rotate through the driver, so that the switching assembly switches the opening and closing of the first valve port or the opening and closing of the second valve port, and further the second medium opening is alternately communicated with the first medium opening or the third medium opening, so that the functions of air inflation and air deflation are realized.

Description

Technical Field

[0001] The embodiments of the present utility model relate to the technical field of fluid distribution, and particularly to a fluid distribution device, a gas source device and a pneumatic comfort system. Background Technique

[0002] In a pneumatic comfort system, electromagnetic valves are usually used to control the opening and closing of air circuits, and thus control the inflation and deflation of air bags. With the diversification of massage modes, higher requirements are put forward for the opening and closing response speed and frequency of the valve body. Moreover, each electromagnetic valve can only control one air circuit. When there are many air bags in the whole pneumatic comfort system, many electromagnetic valves need to be correspondingly arranged, resulting in increased costs and more requirements for the layout space. In the current technical means, a multi-way valve with a rotating switching path can also be used, but its control method and air circuit design cannot meet the requirements of the current pneumatic massage system, especially in a pneumatic comfort system with high-frequency vibration.

[0003] However, in the process of implementing the embodiments of the present utility model, the inventors found that: at present, for the fluid valve with a rotating switching method, its air circuit design can only meet the connection or closure of each shunt channel and the main channel, and cannot realize the function of deflating the shunt channel during the rotating switching process. Summary of the Utility Model

[0004] The present utility model provides a fluid distribution device to solve the technical problem that in the current technical means, for the fluid valve with a rotating switching method, its air circuit design can only meet the connection or closure of each shunt channel and the main channel, and cannot realize the function of deflating the shunt channel during the rotating switching process. The present utility model can realize the function of rotating switching for inflation and deflation.

[0005] To solve the above technical problem, a technical solution adopted by the present utility model is: to provide a fluid distribution device, including:

[0006] A seat body provided with a plurality of fluid distribution units. Each fluid distribution unit includes a first medium opening, a second medium opening, a third medium opening, a first valve port and a second valve port. The first medium opening is connected to the second medium opening through the first valve port, and the third medium opening is connected to the second medium opening through the second valve port;

[0007] A plurality of switching components, each switching component including a first valve core, a second valve core and a reset component. The first valve core is used to open or close the first valve port, the second valve core is used to open or close the second valve port, and the reset component is used to drive the first valve core or the second valve core to move from the closed position to the open position;

[0008] A rotor rotatably arranged in the seat body;

[0009] A driver, connected to the rotor, is configured to drive the rotor to rotate by a preset angle, so that the rotor pushes the first valve core and / or the second valve core relative to the seat body from an open position to a closed position, and at the same time, in the same fluid distribution unit, at most one of the first valve port and the second valve port is opened.

[0010] Optionally, one end of the first valve core close to the first valve port is a first plug, and the end facing away from the first valve port is a first pusher; one end of the second valve core close to the second valve port is a second plug, and the end facing away from the second valve port is a second pusher; the outer side surface of the rotor is provided with a first groove and a second groove. When the first valve core is in the open position, at least a part of the first pusher is located in the first groove, and when the second valve core is in the open position, at least a part of the second pusher is located in the second groove.

[0011] Optionally, in the same fluid distribution unit, the first valve port and the second valve port are aligned along the axial direction of the rotor, and the first groove and the second groove are arranged in a circumferentially offset manner.

[0012] Optionally, in the same fluid distribution unit, the first valve port and the second valve port are arranged in a circumferentially offset manner, and the corresponding first groove and second groove on the rotor are aligned along the axial direction of the rotor.

[0013] Optionally, in the same fluid distribution unit, the first valve port and the second valve port are arranged in a circumferentially offset manner, and the corresponding first groove and second groove on the rotor are arranged in a circumferentially offset manner.

[0014] Optionally, both the first pusher and the second pusher are spheres, the first groove is a spherical groove matching the first pusher, and the second groove is a spherical groove matching the second pusher.

[0015] Optionally, in the same switching assembly, the reset assembly is an elastic substrate, the elastic substrate is fixed in the seat body, the first plug and the second plug are both arranged on one side surface of the elastic substrate, the first pusher and the second pusher respectively abut against the other side surface of the elastic substrate. When at least a part of the first pusher is located in the first groove, the elastic substrate moves the first valve core from the closed position to the open position, and when at least a part of the second pusher is located in the misaligned second groove, the elastic substrate moves the second valve core from the closed position to the open position.

[0016] Optionally, the seat body includes an inner housing and an outer housing sleeved on the inner housing. The rotor is located inside the inner housing. The first valve port and the second valve port are formed on the inner side wall of the outer housing. The elastic substrate is partially fixedly clamped between the inner housing and the outer housing.

[0017] To solve the above technical problems, another technical solution adopted by the present utility model is: to provide a gas source device, including an air pump and the above-mentioned fluid distribution device. The air pump is connected to the seat body, and the air outlet of the air pump communicates with the first medium opening.

[0018] To solve the above technical problems, another technical solution adopted by the present utility model is: to provide a pneumatic comfort system, including a gas source, a plurality of air bags and the above-mentioned fluid distribution device. The gas source communicates with the first medium opening, the air bags communicate with the second medium opening, and the fluid distribution device drives the rotor to rotate through the driver, so that the plurality of air bags are alternately inflated and deflated.

[0019] In the embodiment of the present utility model, the driver drives the rotor to rotate at a preset angle, so that the switching component switches the opening and closing of the first valve port or the second valve port, and further enables the second medium opening to communicate with the first medium opening or the third medium port alternately, realizing the functions of inflation and deflation. When applied to a pneumatic comfort system, a single fluid distribution unit can control the inflation and deflation of a single air-using unit. Combining the rotation switching method, the fluid distribution device can alternately realize the inflation and deflation of multiple air bags, making the overall air circuit design more concise and the structure more miniaturized, and can be effectively applied to the pneumatic comfort system for high-frequency inflation and deflation switching control.

[0020] Furthermore, since neither the first plug nor the second plug is in direct contact with the rotor, it will not be affected by the frictional force of the rotor rotation, reducing the friction suffered by the first plug and the second plug and thus reducing wear, extending the service life of the first valve core and the second valve core, and reducing the airtightness requirements for the first plug and the second plug; the spherical push member cooperates with the groove of the rotor, with better sound insulation effect and less frictional loss to the rotor.

[0021] Furthermore, compared with solenoid valves, the driver can better control the switching frequency, and the rotor, the first valve core and the second valve core respond synchronously, with a faster response speed and lower noise generated. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained according to the drawings without creative efforts.

[0023] Figure 1 is a schematic structural diagram of the fluid distribution device of the present utility model;

[0024] Figure 2 is an exploded schematic structural diagram of the fluid distribution device of the present utility model;

[0025] Figure 3 is a schematic sectional structural diagram of the fluid distribution device of the present utility model;

[0026] Figure 4 is a schematic structural diagram of the seat body of the fluid distribution device of the present utility model;

[0027] Figure 5 is an exploded schematic structural diagram of the switching assembly of the fluid distribution device of the present utility model;

[0028] Figure 6 is a schematic diagram of the positions of the valve port and the groove of the rotor of the fluid distribution unit of the present utility model;

[0029] Figure 7 is the first schematic diagram when the fluid distribution device of the present utility model is in the process of switching between the charging and deflating states;

[0030] Figure 8 is a schematic diagram when the fluid distribution device of the present utility model is in the process of switching between the charging, pressure maintaining and deflating states;

[0031] Figure 9 is the second schematic diagram when the fluid distribution device of the present utility model is in the process of switching between the charging and deflating states;

[0032] Figure 10 is the third schematic diagram when the fluid distribution device of the present utility model is in the process of switching between the charging and deflating states.

[0033] Explanation of reference numerals:

[0034] 100, fluid distribution device; 1, seat body; 11, inner housing; 111, rotating groove; 112, communicating groove; 113, second communicating groove; 114, moving groove; 115, second moving groove; 116, receiving groove; 117, first correction position; 118, installation groove; 12, outer housing; 121, first outer housing; 13, fluid distribution unit; 131, first medium opening; 132, second medium opening; 133, third medium opening; 134, first valve port; 135, second valve port;

[0035] 2. Switching component; 21. First valve core; 211. First plug; 212. First pushing member; 22. Second valve core; 221. Second plug; 222. Second pushing member; 23. Reset component; 231. Elastic substrate; 2311. First receiving groove; 2312. Second receiving groove;

[0036] 3. Rotor; 31. First groove; 32. Second groove; 33. Second correction position;

[0037] 4. Driver;

[0038] 5. Pressure regulating valve. Detailed implementation manners

[0039] For the convenience of understanding the present utility model, the present utility model will be described in more detail below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is expressed as "locked to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is expressed as "connected to" another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are only for the purpose of illustration.

[0040] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in this specification in the description of the present utility model are only for the purpose of describing specific embodiments, and are not intended to limit the present utility model. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0041] Please refer to Figures 1-3, the fluid distribution device 100 includes a base body 1, a plurality of switching components 2, a rotor 3 and a driver 4. The base body 1 is provided with a plurality of fluid distribution units 13. The fluid distribution unit 13 includes a first medium opening 131, a second medium opening 132, a third medium opening 133, a first valve port 134 and a second valve port 135. The first medium opening 131 communicates with the second medium opening 132 through the first valve port 134. The first medium opening 131 is used for communicating with a gas source, the second medium opening 132 is used for communicating with a gas-using unit, and the third medium opening 133 communicates with the second medium opening 132 through the second valve port 135. The third medium opening 133 is used for communicating with the outside. The switching component 2 includes a first valve core 21 and a second valve core 22. The first valve core 21 and the second valve core 22 are respectively arranged at the relative positions of the base body 1 and the first valve port 134 and the second valve port 135. The first valve core 21 and the second valve core 22 can move relative to the base body 1. The first valve core 21 is used for opening or closing the first valve port 134, and the second valve core 22 is used for opening or closing the second valve port 135; the switching component 2 further includes a reset component 23, and the reset component 23 is used for driving the first valve core 21 and the second valve core 22 to move from the closed position to the open position respectively.

[0042] The rotor 3 is rotatably arranged in the base body 1, and partial side walls of the rotor 3 can abut against the first valve core 21 and the second valve core 22. The driver 4 is fixed to the base body 1. The driver 4 is connected to the rotor 3 and is used for driving the rotor 3 to rotate at a preset angle to push the first valve core 21 and / or the second valve core 22 to move radially relative to the base body 1 from the open position to the closed position, so as to switch the opening and closing of the first valve port 134 or the opening and closing of the second valve port 135. Among them, in the same fluid distribution unit 13 and at the same moment, at most one of the first valve port 134 and the second valve port 135 is opened. In other words, in the same fluid distribution unit 13 and at the same moment, when the first valve port 134 is opened by the first valve core 21, the second valve port 135 is closed by the second valve core 22, or when the first valve port 134 is closed by the first valve core 21, the second valve port 135 is opened by the second valve core 22, or the first valve port 134 and the second valve port 135 are simultaneously closed by the switching component 2. By driving the rotor 3 to rotate at a preset angle by the driver 4, the switching component 2 is enabled to switch the opening and closing of the first valve port 134 or the opening and closing of the second valve port 135, so that the second medium opening 132 is alternately communicated with the first medium opening 131 or the third medium opening 133, realizing the functions of inflation and deflation, or so that the second medium opening 132 is alternately communicated with the first medium opening 131, the first medium opening 131 is disconnected or the third medium opening 133 is communicated, realizing the functions of inflation, pressure maintaining and deflation switching.

[0043] For the above-mentioned base body 1, please refer to Figure 4, the base body 1 includes an inner housing 11 and an outer housing 12. The outer housing 12 is sleeved on the inner housing 11. The inner housing 11 is provided with a rotation groove 111, a plurality of first communication grooves 112 and a plurality of second communication grooves 113. The rotation groove 111 communicates with the first communication grooves 112 and the second communication grooves 113 respectively. The rotation groove 111 is used for accommodating the rotor 3. The first communication grooves 112 and the second communication grooves 113 are both located on the outer wall of the inner housing 11. The first communication grooves 112 are used for allowing a part of the first valve core 21 to extend into the rotation groove 111, and the second communication grooves 113 are used for allowing a part of the second valve core 22 to extend into the rotation groove 111. The first medium opening 131 penetrates through the inner housing 11 and the outer housing 12. The second medium opening 132, the third medium opening 133, the first valve port 134 and the second valve port 135 are all arranged on the inner side wall of the outer housing 12.

[0044] In some embodiments, please refer to Figure 2 and Figure 4 , the outer housing 12 includes a plurality of first outer housings 121. The plurality of first outer housings 121 are circumferentially fixed to the inner housing 11, thus facilitating production, processing and assembly.

[0045] For the above-mentioned first valve core 21 and second valve core 22, in some embodiments, the first valve core 21 includes a first plug 211 and a first pushing member 212, and the second valve core 22 includes a second plug 221 and a second pushing member 222. The first plug 211 is located at a position facing the first valve port 134, the first pushing member 212 is located near the rotor 3, and the first pushing member 212 can abut against the first plug 211; the second plug 221 is located at a position facing the second valve port 135, the second pushing member 222 is located near the rotor 3, and the second pushing member 222 can abut against the second plug 221; the outer side surface of the rotor 3 is provided with a first groove 31 and a second groove 32. When the first valve core 21 is in the open position, at least a part of the first pushing member 212 passes through the first communication groove 112 and is located in the first groove 31. When the second valve core 22 is in the open position, at least a part of the second pushing member 222 passes through the second communication groove 113 and is located in the second groove 32. That is, when the first pushing member 212 sinks into the first groove 31, the reset assembly 23 will push the first valve core 21 from the closed position to the open position due to the reset action to open the first valve port 134 for inflation. At the same time, the second pushing member 222 will be in a position misaligned with the second groove 32. At this time, the outer side wall of the rotor 3 will abut against the second valve core 22 to keep it in the closed position to close the second valve port 135 at the same time; when the first pushing member 212 is misaligned with the corresponding first groove 31, the outer side wall of the rotor 3 will push the first valve core 21 from the open position to the closed position. When the second pushing member 222 sinks into the corresponding second groove 32, the reset assembly 23 will push the second valve core 22 from the closed position to the open position due to the reset action to open the second valve port 135 for deflation. At the same time, the first pushing member 212 will be in a position misaligned with the first groove 31. At this time, the outer side wall of the rotor 3 will abut against the first valve core 21 to keep it in the closed position to close the first valve port 134 at the same time; when the second pushing member 222 is misaligned with the corresponding second groove 32, the outer side wall of the rotor 3 will push the second valve core 22 from the open position to the closed position. This cycle repeats.

[0046] For the above-mentioned reset component 23, in some embodiments, within the same switching component 2, the reset component 23 is an elastic substrate 231. The elastic substrate 231 is partially fixedly clamped between the inner housing 11 and the outer housing 12. Both the first plug 211 and the second plug 221 are provided on one side surface of the elastic substrate 231, that is, the elastic substrate 231 is integrally formed with the first plug 211 and the second plug 221. The portions of the first plug 211 and the second plug 221 located on the elastic substrate 231 are protruding parts. The first pushing member 211 and the second pushing member 222 respectively abut against the other side surface of the elastic substrate 231. The first pushing member 211 and the second pushing member 222 can be integrally integrated on the other side surface of the elastic substrate 231, or can be designed separately from the elastic substrate 231 to achieve movable abutment. When at least a part of the first pushing member 212 sinks into the first groove 31, the elastic substrate 231 moves the first valve core 21 from the closed position to the open position through its self-restoring force. When at least a part of the second pushing member 222 is located in the misalignment of the second groove 32, the elastic substrate 231 moves the second valve core 22 from the closed position to the open position through its self-restoring force. The reset component 23 is not limited to the above structure. In some other embodiments, the reset component 23 can also be other structures, such as springs respectively abutting against or connecting to the first valve core 21 and the second valve core 22. Through the self-restoring force of the springs, it is also possible that when at least a part of the first pushing member 211 sinks into the first groove 31, or when at least a part of the second pushing member 222 sinks into the second groove 32, the springs move the first valve core 21 or the second valve core 22 from the closed position to the open position through their self-restoring force.

[0047] In some embodiments, referring to Figure 4 , the inner housing 11 is provided with a plurality of first movable grooves 114 and a plurality of second movable grooves 115. The first communication groove 112 is provided at the bottom of the first movable groove 114. The first communication groove 112 communicates with the first movable groove 114. The first pushing member 212 is movably arranged in the first movable groove 114. The second communication groove 113 is provided at the bottom of the second movable groove 115. The second communication groove 113 communicates with the second movable groove 115. The second pushing member 222 is movably arranged in the second movable groove 115.

[0048] In some embodiments, referring to Figure 4 , in order to reduce the occupied space of the fluid distribution device 100, a plurality of receiving grooves 116 are provided on the surface of the inner housing 11. Both the first movable groove 114 and the second movable groove 115 are provided at the bottom of the receiving groove 116. The receiving groove 116 communicates with the first movable groove 114 and the second movable groove 115 respectively. The reset component 23 of the switching component 2 is fixed in the receiving groove 116.

[0049] In some embodiments, referring to Figure 2 、 Figure 3 andFigure 5 The first pushing member 212 and the second pushing member 222 are both spheres. The spherical first pushing member 212 can move or rotate relative to the first movable groove 114 and the first communication groove 112, and the spherical second pushing member 222 can move or rotate relative to the second movable groove 115 and the second communication groove 113. On the side of the elastic substrate 231 facing away from the first valve port 134 and the second valve port 135, a first receiving groove 2311 and a second receiving groove are respectively provided. A part of the first pushing member 212 is rotatably embedded in the first receiving groove 2311, and a part of the second pushing member 222 is rotatably embedded in the second receiving groove. The sliding friction between the first pushing member 212 and the second pushing member 222 and the rotor 3 is converted into rolling friction, so as to reduce the frictional force between the first pushing member 212 and the second pushing member 222 and the rotor 3 respectively, making the rotor 3 rotate smoothly and having a good sound insulation effect.

[0050] For the above-mentioned rotor 3, please refer to Figure 2 and Figure 3 , the first groove 31 is a spherical groove matching the first pushing member 212, and the second groove 32 is a spherical groove matching the second pushing member 222.

[0051] In other embodiments, the first pushing member 212 is fixed on the side surface of the elastic substrate 231 close to the rotor 3, and the side of the first pushing member 212 close to the rotor 3 is a curved surface or a spherical surface. The first groove 31 is a curved surface groove or a spherical groove matching the first pushing member 212. The second pushing member 222 is fixed on the side surface of the elastic substrate 231 close to the rotor 3, and the side of the second pushing member 222 close to the rotor 3 is a curved surface. The second groove 32 is a curved surface groove or a spherical groove matching the second pushing member 222.

[0052] In some embodiments, within the same fluid distribution unit 13, the first valve port 134 and the second valve port 135 are axially aligned along the axis of the rotor 3, that is, they are located on the same axis, and the corresponding first groove 31 and second groove 32 on the rotor 3 are circumferentially offset. Alternatively, within the same fluid distribution unit 13, the first valve port 134 and the second valve port 135 are circumferentially offset, and the corresponding first groove 31 and second groove 32 on the rotor 3 are axially aligned along the axis of the rotor 3, that is, they are located on the same axis. Alternatively, within the same fluid distribution unit 13, the first valve port 134 and the second valve port 135 are circumferentially offset, and the corresponding first groove 31 and second groove 32 on the rotor 3 are also circumferentially offset. It should be noted that when the first valve port 134 and the second valve port 135 and the corresponding first groove 31 and second groove 32 are all circumferentially offset within the same fluid distribution unit 13, it is necessary to ensure that the central angle corresponding to the first valve port 134 and the second valve port 135 in the circumferential direction is different from the central angle corresponding to the first groove 31 and the second groove 32 in the circumferential direction, so as to achieve that at the same moment, at most one of the first valve port 134 and the second valve port 135 is opened. For example, please refer to Figure 6 , on the inner side wall of the outer housing 12, four valve ports are evenly distributed circumferentially. Two are the first valve ports 134, and two are the second valve ports 135. The two first valve ports 134 are oppositely arranged and are spaced 180° circumferentially. The two second valve ports 135 are oppositely arranged and are also spaced 180° circumferentially. The first valve port 134 and the second valve port 135 are spaced 90° and are circumferentially offset. There is only one first groove 31 and one second groove 32 on the rotor 3, and the first groove 31 and the second groove 32 are also circumferentially offset, spaced 180°. When the first groove 31 is aligned with the first pushing member 212, the first valve port 134 is opened, and at this time, the second pushing member 222 is not aligned with the second groove 32, and the second valve port 135 is closed, which can also achieve that at the same moment, at most one of the first valve port 134 and the second valve port 135 is opened.

[0053] For the above-mentioned driver 4, please refer to Figure 2 , the driver 4 is fixed to the inner housing 11, the driver 4 is connected to the rotor 3, and the driver 4 is used to drive the rotor 3 to rotate relative to the inner housing 11 at a preset angle.

[0054] In some embodiments, the driver 4 is a stepper motor. The stepper motor can better control the rotation of the rotor 3, so that the rotor 3 rotates in a stepped manner, and thus better control the switching frequency.

[0055] In some embodiments, please refer to Figure 2, To perform angle correction for each rotation of the rotor 3 and prevent angle deviation of the rotor 3 after long-term operation, which may cause the switching component 2 to fail to normally switch the opening and closing of the first valve port 134 or the second valve port 135, the inner housing 11 is provided with a first correction position 117, and the rotor 3 is provided with a second correction position 33. For each rotation of the rotor 3, the second correction position 33 corresponds to the first correction position 117.

[0056] In some embodiments, please refer to Figure 3 and Figure 4 , To prevent excessive intake pressure, the fluid distribution device 100 further includes a pressure regulating valve 5. The inner housing 11 is provided with a mounting groove 118. The mounting groove 118 is respectively communicated with the first medium opening 131 and the rotating groove 111. The pressure regulating valve 5 is installed in the mounting groove 118. The pressure regulating valve 5 is used to connect or disconnect the first medium opening 131 and the rotating groove 111. When the threshold value of the intake pressure at the first medium opening 131 exceeds the preset threshold value of the pressure regulating valve 5, the pressure regulating valve 5 is opened, and part of the gas in the first medium opening 131 is discharged outward through the pressure regulating valve 5 and the rotating groove 111 to regulate the gas flowing through the first medium opening 131.

[0057] To facilitate the reader's understanding of the inventive concept of the present invention, the working process of the present invention will be described.

[0058] In some embodiments, in combination with Figures 1-7 , In the general working state, one of the switching components 2 has the first pushing member 212 corresponding to the first valve port 134 embedded in the corresponding first groove 31, releasing the corresponding elastic substrate 231. The first plug 211 opens the corresponding first valve port 134, so that the corresponding fluid distribution unit 13 is in the inflated state. At the same time, the second pushing member 222 abuts against the outer wall of the rotor 3, so that the corresponding second valve port 135 is kept in the closed position, and the air release channel is closed; by setting the number of the first grooves 31 and the second grooves 32, one or more first valve ports 134 can be opened simultaneously. When the driver 4 drives the rotor 3 to rotate a preset angle, the first pushing member 212 disengages from the corresponding first groove 31, and the outer side wall of the rotor 3 pushes the first pushing member 212 to further squeeze the elastic substrate 231 so that the first plug 211 closes the corresponding first valve port 134. At the next moment or the same moment, the second pushing member 222 will fall into the corresponding second groove 32, releasing the elastic substrate 231. Due to the self-restoring force of the elastic substrate 231, the second valve core 22 moves from the closed position to the open position, the second valve port 135 is opened, and the corresponding fluid distribution unit 13 is in the air release state. By rotating the rotor 3, the inflation and deflation state switching of several fluid distribution units 13 is alternately realized.

[0059] In other embodiments, please combine Figures 1-6 and Figure 8, in order to enable the fluid distribution unit 13 to maintain a constant pressure state, when a fluid distribution unit 13 switches from an inflated state to a deflated state, the rotor 3 needs to rotate at least one step. If the intermediate step is increased by adjusting the angle so that both the first valve port 134 and the second valve port 135 are in a closed state in the intermediate state, the airbag can maintain pressure, that is, a fluid distribution unit 13 can be in an inflated, pressure-maintaining, and deflated state in sequence. Specifically, initially, the first pushing member 212 corresponding to the first valve port 134 of a switching assembly 2 is embedded in the corresponding first groove 31, releasing the corresponding elastic substrate 231 to open the corresponding first valve port 134, so that the corresponding fluid distribution unit 13 is in an inflated state. When the driver 4 drives the rotor 3 to rotate a preset angle, the first pushing member 212 corresponding to the first valve port 134 of the switching assembly 2 disengages from the corresponding first groove 31, squeezing the elastic substrate 231 to close all the first valve ports 134 with the first plug 211. At the same time, the second pushing member 222 corresponding to the second valve port 135 of the switching assembly 2 is still misaligned with the corresponding second groove 32, so that the corresponding fluid distribution unit 13 is in a pressure-maintaining state. When the driver 4 drives the rotor 3 to rotate another preset angle, the second pushing member 222 corresponding to the second valve port 135 of the switching assembly 2 is embedded in the corresponding second groove 32, releasing all the corresponding elastic substrates 231 to open the corresponding second valve ports 135, so that the corresponding fluid distribution unit 13 is in a deflated state.

[0060] In some embodiments, please refer to Figures 8-10, the first valve port 134 and the second valve port 135 are arranged axially aligned along the outer housing 12, and a plurality of fluid distribution units 13 are arranged along the circumferential direction of the outer housing 12. For example, there can be four fluid distribution units A, B, C, and D. On average, one fluid distribution unit 13 can be arranged every 90 degrees. Assuming that the first groove 31 and the second groove 32 are arranged offset axially on the rotor 3, and when the number of the first groove 31 and the second groove 32 is only one, assuming that the first valve core 21 of the A fluid distribution unit 13 is in the open position and the second valve core 22 is in the closed position at the initial position, when the rotor 3 rotates step by step, the four fluid distribution units A, B, C, and D of 13 will sequentially perform inflation-deflation switching one by one. And assuming that there are two first grooves 31 and two second grooves 32 on the rotor 3 respectively, and the two first grooves 31 and the two second grooves 32 are arranged opposite to each other (for example, the two first grooves 31 are spaced 180° central angle in the circumferential direction, and the two second grooves 32 are spaced 180° central angle in the circumferential direction), then the A fluid distribution unit 13 and the C fluid distribution unit 14 will be inflated or deflated simultaneously, and the B fluid distribution unit 13 and the D fluid distribution unit 14 will be inflated or deflated simultaneously. Therefore, according to the different settings of the airbag, different numbers of fluid distribution units 13 can be correspondingly set. According to the different inflation-deflation sequences of the airbag, the number and position of the first groove 31 and the second groove 32 can be adjusted. Again, assuming that there are two first grooves 31 and two second grooves 32 on the rotor 3 respectively, but the spacing between the first groove 31 and the second groove 32 is different, and the adjacent first groove 31 and the second groove 32 are spaced 45° central angle in the circumferential direction, and the two first grooves 31 are arranged adjacent to each other (and the two first grooves 31 are spaced 90° central angle in the circumferential direction), then when the A fluid distribution unit 13 is inflated, the B fluid distribution unit 14 is also in the inflated state, and the C fluid distribution unit 13 and the D fluid distribution unit 14 are both in the state where the first valve port 134 and the second valve port 135 are closed simultaneously. Then the rotor 3 rotates 45°, the A fluid distribution unit 13 is in the deflated state, and the B fluid distribution unit 13 is also in the deflated state. The C fluid distribution unit 13 and the D fluid distribution unit 13 are still in the state where the first valve port 134 and the second valve port 135 are closed simultaneously. The rotor 3 rotates another 45 degrees, and the B and C fluid distribution units 13 enter the above cyclic action. In this setting, the inflation-deflation actions of two adjacent fluid distribution units 13 are sequentially controlled. Therefore, according to the different settings of the airbag, different numbers of fluid distribution units 13 can be correspondingly set. According to the different inflation-deflation sequences of the airbag, the number and position of the first groove 31 and the second groove 32 can be adjusted.

[0061] It should be noted that in addition to the above-mentioned work processes, there are other processes in this application, which are not listed one by one here.

[0062] When the fluid distribution device 100 in the embodiment of the present utility model is applied to a pneumatic comfort system, a single fluid distribution unit 13 can control the inflation and deflation of a pneumatic unit. Combined with the rotation switching method, the fluid distribution device 100 can alternately realize the inflation and deflation of multiple air bags, making the overall air circuit design more concise and the structure more miniaturized, and can be effectively applied to the pneumatic comfort system for high-frequency inflation and deflation switching control.

[0063] The present utility model also provides an embodiment of a gas source device. The gas source device includes the above-mentioned fluid distribution device 100, including an air pump and the above-mentioned fluid distribution device 100. The air pump is connected to the inner housing 11 of the seat body 1 of the fluid distribution device 100, and the air outlet of the air pump communicates with the first medium opening 131. For the structure and function of the fluid distribution device 100, reference can be made to the above-mentioned embodiment, and details will not be repeated here.

[0064] The present utility model also provides an embodiment of a pneumatic comfort system. The pneumatic comfort system includes a gas source, several air bags and the above-mentioned fluid distribution device 100. The gas source communicates with the first medium opening 131, and the air bags communicate with the second medium opening 132 of the seat body 1 of the fluid distribution device 100. The fluid distribution device 100 drives the rotor 3 of the fluid distribution device 100 to rotate through the driver 4 of the fluid distribution device 100, so that several air bags are alternately inflated and deflated, thereby massaging the same area of the human body and achieving the kneading massage effect. For the structure and function of the fluid distribution device 100, reference can be made to the above-mentioned embodiment, and details will not be repeated here.

[0065] In some embodiments, the fluid distribution device 100 drives the rotor 3 of the fluid distribution device 100 to rotate through the driver 4 of the fluid distribution device 100, so that the air bag realizes inflation, pressure holding or deflation. When the air bag is in the pressure holding state, it supports the human body part.

[0066] It should be noted that the description and drawings of the present utility model give preferred embodiments of the present utility model. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described in this specification. These embodiments are not additional limitations to the content of the present utility model. The purpose of providing these embodiments is to make the understanding of the disclosed content of the present utility model more thorough and comprehensive. Further, the above technical features continue to be combined with each other to form various embodiments not listed above, which are all regarded as within the scope described in the description of the present utility model; furthermore, for those of ordinary skill in the art, improvements or changes can be made according to the above description, and all such improvements and changes should fall within the protection scope of the appended claims of the present utility model.

Claims

1. A fluid distribution device, characterized in that: include: The seat body is provided with a plurality of fluid distribution units, wherein the fluid distribution units include a first medium opening, a second medium opening, a third medium opening, a first valve port, and a second valve port, wherein the first medium opening is connected to the second medium opening through the first valve port, and the third medium opening is connected to the second medium opening through the second valve port; A plurality of switching components, wherein the switching components include a first valve core, a second valve core, and a reset component, wherein the first valve core is used to open or close the first valve port, the second valve core is used to open or close the second valve port, and the reset component is used to drive the first valve core or the second valve core to move from a closed position to an open position; A rotor is rotatably disposed in the seat; A driver is connected to the rotor, and is used to drive the rotor to rotate at a preset angle so that the rotor pushes the first valve core and / or the second valve core to move from an open position to a closed position relative to the seat body, and at the same time, in the same fluid distribution unit, at most one of the first valve port and the second valve port is opened.

2. The fluid dispensing device according to claim 1, characterized in that: One end of the first valve core close to the first valve port is a first plug, and the end opposite to the first valve port is a first pusher; one end of the second valve core close to the second valve port is a second plug, and the end opposite to the second valve port is a second pusher; the outer side surface of the rotor is provided with a first groove and a second groove, when the first valve core is in the open position, at least a part of the first pusher is located in the first groove, and when the second valve core is in the open position, at least a part of the second pusher is located in the second groove.

3. The fluid dispensing device according to claim 2, characterized in that: In the same fluid distribution unit, the first valve port and the second valve port are aligned along the axial direction of the rotor, and the first groove and the second groove are staggered in the circumferential direction.

4. The fluid dispensing device according to claim 2, characterized in that: In the same fluid distribution unit, the first valve port and the second valve port are staggered in the circumferential direction, and the corresponding first groove and second groove on the rotor are aligned along the axial direction of the rotor.

5. The fluid dispensing device according to claim 2, characterized in that: In the same fluid distribution unit, the first valve port and the second valve port are staggered in the circumferential direction, and the corresponding first groove and second groove on the rotor are staggered in the circumferential direction.

6. The fluid dispensing device according to claim 2, characterized in that: The first pushing member and the second pushing member are both spheres, the first groove is a spherical groove matching the first pushing member, and the second groove is a spherical groove matching the second pushing member.

7. The fluid dispensing device according to any one of claims 2 to 6, characterized in that: In the same switching component, the reset component is an elastic substrate, the elastic substrate is fixed in the seat body, the first plug and the second plug are both arranged on one side of the elastic substrate, the first pusher and the second pusher are respectively abutted against the other side of the elastic substrate, when at least a part of the first pusher is located in the first groove, the elastic substrate moves the first valve core from the closed position to the open position, and when at least a part of the second pusher is located in the misaligned second groove, the elastic substrate moves the second valve core from the closed position to the open position.

8. The fluid dispensing device according to claim 7, characterized in that: The seat body includes an inner shell and an outer shell sleeved on the inner shell, the rotor is located in the inner shell, the first valve port and the second valve port are opened on the inner side wall of the outer shell, and the elastic substrate is partially fixedly clamped between the inner shell and the outer shell.

9. A gas source device, characterized in that: It comprises an air pump and the fluid dispensing device as described in any one of claims 1 to 8, wherein the air pump is connected to a seat body, and an air outlet of the air pump is connected to the first medium opening.

10. A pneumatic comfort system, characterized in that: It comprises an air pump, a plurality of air bags and a fluid distribution device as described in any one of claims 1 to 8, wherein the air pump is connected to the first medium opening, the air bags are connected to the second medium opening, and the fluid distribution device drives the rotor to rotate through the driver so that the plurality of air bags are alternately inflated and deflated.

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