Fluid distribution device and pneumatic comfort system

Abstract

The utility model relates to a fluid distribution device, in particular to a fluid distribution device and a pneumatic comfort system.The fluid distribution device comprises a shell, a first fluid channel and a second fluid channel, the first valve module is used for controlling on-off of a first air inlet, communicated with an air source, of the first fluid channel; the second valve module is used for controlling on-off of a second air inlet, communicated with the air source, of the second fluid channel; and the third valve module is used for controlling the first fluid channel and the second fluid channel to synchronously open and close a first inflation inlet and a second inflation inlet which are respectively used for being communicated with an external air bag. According to the fluid distribution device, the single valve module is used for controlling the synchronous opening and closing of the at least two inflation ports, communicated with the at least two air bags, of the at least two fluid channels, so that the number of valve modules for controlling the opening and closing of the inflation ports is effectively reduced, and the cost of the fluid distribution device is reduced; and the integrated volume of the whole fluid distribution device is further reduced.

Description

Technical Field

[0001] The embodiments of the present utility model relate to the technical field of fluid distribution devices, and in particular to a fluid distribution device and a pneumatic comfort system. Background Art

[0002] Pneumatic comfort systems (for example, pneumatic massage systems or pneumatic support systems) usually include an air source device and an air bag connected to the air source device through a fluid distribution device. During operation, the air source device supplies air and the fluid distribution device controls the inflation and deflation of the air bag.

[0003] Currently, in pneumatic comfort systems, the fluid distribution device typically utilizes a solenoid valve module, which contains multiple solenoid valves. Typically, one solenoid valve is connected to each airbag, and each solenoid valve controls the inflation and deflation of the corresponding airbag. Pneumatic comfort systems typically include multiple airbags, requiring multiple solenoid valves to control the inflation and deflation of each bag. This results in a large number of solenoid valves, which in turn results in an excessively large solenoid valve module integrating multiple solenoid valves. This not only increases the cost of the pneumatic comfort system but also increases the space required. Furthermore, when at least two airbags require the same inflation and deflation actions during use, the multiple solenoid valves corresponding to the at least two airbags must be controlled and configured identically, adding complexity and difficulty to the control process. Utility Model Content

[0004] The main technical problem solved by the embodiments of the present utility model is to provide a fluid distribution device and a pneumatic comfort system. The fluid distribution device adopts a single valve module to control the synchronous opening and closing of at least two inflation ports respectively connected to at least two air bags, thereby reducing the number of valve modules and the integrated volume of the fluid distribution device, thereby reducing the space occupancy rate of the fluid distribution device integrated by the valve module, and further reducing the space occupancy rate and cost of the overall pneumatic comfort system.

[0005] In order to solve the above technical problems, a technical solution adopted in an embodiment of the present utility model is: providing a fluid distribution device, including a shell, a first valve module, a second valve module and a third valve module; the shell is provided with a first fluid channel and a second fluid channel, and the shell is also provided with a first inflation port for connecting the first fluid channel and the external air bag, a second inflation port for connecting the second fluid channel and the external air bag, a first air inlet for connecting the first fluid channel and the external air source, and a second air inlet for connecting the second fluid channel and the external air source; the first valve module is arranged in the shell for controlling the on and off of the first air inlet; the second valve module is arranged in the shell for controlling the on and off of the second air inlet; the third valve module is arranged in the shell for controlling the synchronous opening or closing of the first inflation port and the second inflation port.

[0006] Optionally, the third valve module includes a valve core and an actuator; the valve core includes a first sealing part, a second sealing part and a connecting part, the first sealing part and the second sealing part are fixed to the connecting part, the first sealing part is located at the first inflation port, and is used to close the first inflation port, and the second sealing part is located at the second inflation port, and is used to close the second inflation port; the actuator is connected to the connecting part, and the actuator is used to drive the connecting part to move so that the first sealing part and the second sealing part move synchronously with the connecting part.

[0007] Optionally, the shell is further provided with a first flow chamber and a second flow chamber; the first flow chamber is connected to the first fluid channel through the first inflation port, and the first flow chamber is used to communicate with an external air bag, and the second flow chamber is connected to the second fluid channel through the second inflation port, and the second flow chamber is used to communicate with an external air bag; the shell is also provided with an actuating chamber, the actuating chamber is isolated from the first flow chamber and the second flow chamber, and the actuator is arranged in the actuating chamber.

[0008] Optionally, a first telescopic seal is provided between the first sealing portion and the wall of the actuating chamber for sealing and isolating the first flow chamber and the actuating chamber; and / or a second telescopic seal is provided between the second sealing portion and the wall of the actuating chamber for sealing and isolating the second flow chamber and the actuating chamber.

[0009] Optionally, the first flow chamber is provided with a first interface for connecting the first flow chamber and an external air bag, and a first air release port for connecting the first flow chamber and the external atmosphere; the third valve module is also provided with a first valve block, and the first valve block is linked to the first sealing part through a connecting rod. When the first sealing part moves to close the first inflation port, the connecting rod drives the first valve block to open the first air release port. When the first sealing part moves to open the first inflation port, the connecting rod drives the first valve block to close the first air release port.

[0010] Optionally, the second flow chamber is provided with a second interface for connecting the second flow chamber and an external air bag, and a second air release port for connecting the second flow chamber and the external atmosphere; the third valve module is also provided with a second valve block, and the second valve block is linked to the second sealing part through a connecting rod. When the second sealing part moves to close the second inflation port, the connecting rod is driven to link the second valve block to open the second air release port. When the second sealing part moves to open the second inflation port, the connecting rod is driven to link the second valve block to close the second air release port.

[0011] Optionally, the actuator includes a shape memory alloy wire, and the shape memory alloy wire actuates the valve core in a direction of opening the first inflation port and the second inflation port.

[0012] Optionally, the actuator further includes a reset element, which actuates the valve core in a direction of closing the first inflation port and the second inflation port.

[0013] In order to solve the above technical problems, another technical solution adopted in the embodiment of the present utility model is: to provide a pneumatic comfort system, including an air bag, an air source device and the above-mentioned fluid distribution device, and the air bag is ventilatedly connected to the air source through the above-mentioned fluid distribution device.

[0014] The beneficial effects of the embodiments of the present utility model are:

[0015] The fluid distribution device of the present invention is provided with at least two fluid channels, and the air inlet of each fluid channel used to communicate with the air source is controlled by an independent valve module, and a single valve module is provided to control the synchronous opening and closing of at least two inflation ports of the at least two fluid channels respectively used to communicate with at least two air bags, thereby effectively reducing the setting of the valve modules for controlling the opening and closing of the inflation ports, reducing the cost of the fluid distribution device, and further reducing the integrated volume of the overall fluid distribution device.

[0016] The valve module controlling the synchronous opening and closing of at least two inflation ports can be configured as a valve actuated by a shape memory alloy wire, ensuring high stability in the synchronous opening and closing. Furthermore, a flow chamber can be further provided to connect the inflation ports and the airbag, and a deflation port with linked opening and closing control can be provided within the flow chamber to achieve independent inflation and deflation functions.

[0017] The pneumatic comfort system of this utility model utilizes the aforementioned fluid distribution device to control the inflation and deflation of the air bags. At least two air bags connected to at least two inflation ports, whose opening and closing are synchronized by a single valve module on the fluid distribution device, can be controlled to achieve efficient, consistent, and stable synchronized inflation and deflation. Furthermore, the configuration of the aforementioned fluid distribution device reduces the overall space usage and cost of the pneumatic comfort system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0019] Figure 1 This is a schematic diagram of the overall structure of the pneumatic comfort system provided by an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the fluid distribution device provided by the embodiment of the utility model Figure 1 ;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the fluid distribution device provided by the embodiment of the utility model Figure 2 ;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the fluid distribution device provided by the embodiment of the utility model Figure 3 ;

[0023] Figure 5 This is a schematic diagram of the cross-sectional structure of the fluid distribution device provided by the embodiment of the utility model Figure 4 .

[0024] Description of reference numerals:

[0025] 1 housing, 11 first fluid channel, 12 second fluid channel, 13 first inflation port, 14 second inflation port, 15 first air inlet, 16 second air inlet, 17 first flow chamber, 171 first interface, 172 first air release port, 18 second flow chamber, 181 second interface, 182 second air release port, 19 actuation chamber;

[0026] 2 first valve module;

[0027] 3 second valve module;

[0028] 4 third valve module, 41 valve core, 411 first sealing portion, 412 second sealing portion, 413 connecting portion, 414 first telescopic seal, 415 second telescopic seal, 42 actuator, 421 shape memory alloy wire, 422 reset element, 43 first valve block, 44 second valve block;

[0029] 5 air bags;

[0030] 6. Gas source device;

[0031] 71 is a first positioning spring, 72 is a second positioning spring. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as being "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. The terms "upper", "lower", "inside", "outside", "vertical", "horizontal", etc. used in this specification indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0033] Unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art to which this utility model belongs. The terms used in this specification and in the description of this utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model. The term "and / or" used in this specification includes any and all combinations of one or more of the relevant listed items.

[0034] See also Figures 1 to 3 The fluid distribution device of the embodiment of the present invention includes a housing 1 , a first valve module 2 , a second valve module 3 and a third valve module 4 .

[0035] Among them, the shell 1 is provided with a first fluid channel 11 and a second fluid channel 12, which are independent channels isolated from each other and can respectively allow fluid circulation, such as gas circulation, and the first fluid channel 11 and the second fluid channel 12 can be specifically integrally formed on the shell 1, or assembled on the shell 1.

[0036] The housing 1 is further provided with a first inflation port 13 for connecting the first fluid channel 11 and the external air bag 5, and a second inflation port 14 for connecting the second fluid channel 12 and the external air bag 5. During operation, fluid can flow between the first fluid channel 11 and the corresponding connected air bag 5 through the first inflation port 13, such as gas flowing from the first fluid channel 11 into the corresponding connected air bag 5 to inflate the air bag 5, or from the air bag 5 into the first fluid channel 11 to deflate the air bag. Similarly, fluid can flow between the second fluid channel 12 and the corresponding connected air bag 5 through the second inflation port 14, such as gas flowing from the second fluid channel 12 into the corresponding connected air bag 5 to inflate the air bag 5, or from the air bag 5 into the second fluid channel 12 to deflate the air bag.

[0037] For the above-mentioned fluid distribution device, the first inflation port 13 can be opened as at least one, such as one or more than two, so that the first fluid channel 11 is used to connect at least one air bag 5 through at least one first inflation port 13, that is, the first fluid channel 11 connects multiple air bags 5, and one first inflation port 13 is connected to one air bag 5. The at least one air bag 5 that is fluidically connected by the first fluid channel 11 through at least one first inflation port 13 constitutes a first air bag group. The multiple air bags 5 are uniformly supplied with air through the first fluid channel 11, and there may be multiple air bags 5 that are also refluxed and deflated through the first fluid channel 11. Similarly, the second inflation port 14 can be opened as at least one, such as one or more than two, so that the second fluid channel 12 is used to connect at least one air bag 5 through at least one second inflation port 14, that is, the second fluid channel 12 connects multiple air bags 5, and one second inflation port 14 is connected to one air bag 5. The at least one air bag 5 that is fluidically connected by the second fluid channel 12 through at least one second inflation port 14 constitutes a second air bag group. The multiple air bags 5 are uniformly supplied with air through the second fluid channel 12, and there may be multiple air bags 5 that are also refluxed and deflated through the second fluid channel 12.

[0038] In addition, the shell 1 is also provided with a first air inlet 15 for connecting the first fluid channel 11 and the external air source, so that the gas of the air source device 6 can enter the first fluid channel 11 through the first air inlet 15 or flow out from the first fluid channel 11 through the first air inlet 15; and is provided with a second air inlet 16 for connecting the second fluid channel 12 and the external air source, so that the gas of the air source device 6 can enter the second fluid channel 12 through the second air inlet 16 or flow out from the second fluid channel 12 through the second air inlet 16.

[0039] The first valve module 2 is disposed within the housing 1 and is used to control the opening and closing of the first air inlet 15 to control the fluid communication between the external air source and the first fluid channel 11. In some preferred embodiments, the first valve module 2 may also have a degassing function. For example, a three-position, three-way solenoid valve may be used to control the opening and closing of the first air inlet 15 to control the flow of fluid from the air source device 6 to the first fluid channel 11. Gas that flows back from the first fluid channel 11 to the first air inlet 15 can be degassed through the first valve module 2.

[0040] The second valve module 3 is disposed within the housing 1 and is used to control the opening and closing of the second air inlet 16 to control the fluid communication between the external air source and the second fluid channel 12. In some preferred embodiments, the second valve module 3 may also have a degassing function. For example, a three-position, three-way solenoid valve may be used to control the opening and closing of the second air inlet 16 to control the fluid flow from the air source device 6 to the second fluid channel 12. Gas flowing back from the second fluid channel 13 to the second air inlet 16 can be degassed through the second valve module 3.

[0041] The third valve module 4 is disposed in the housing 1 and is used to control the synchronous opening or closing of the first inflation port 13 and the second inflation port 14, so as to control the synchronous inflation or deflation of the air bags 5 respectively connected to the first inflation port 13 and the second inflation port 14. In a preferred embodiment, when a plurality of first inflation ports 13 are provided and are respectively connected to a plurality of air bags 5, that is, when a plurality of second inflation ports 14 are provided and are respectively connected to a plurality of air bags 5, that is, when a plurality of second inflation ports 14 are provided and are respectively connected to a plurality of air bags 5, that is, when a second fluid channel 12 is connected to a second air bag group through at least one second inflation port 14, each first inflation port 13 connected to the first fluid channel 11 and each second inflation port 14 connected to the second fluid channel 12 correspond to each other one to one, and the synchronous opening or closing of a corresponding first inflation port 13 and a corresponding second inflation port 14 is controlled by a third valve module 4. When there is at least one airbag 5 in the first airbag group and at least one airbag 5 in the second airbag group, the corresponding third valve module 4 is set to be at least one corresponding to the number of airbags 5 in the first airbag group and / or the airbags 5 in the second airbag group.

[0042] During operation, the air source device 6 supplies air, the first valve module 2 and the second valve module 3 are opened to the air intake state, and the air enters the first fluid channel 11 and the second fluid channel 12 through the first air inlet 15 and the second air inlet 16, respectively. After the third valve module 4 is opened, the air in the first fluid channel 11 is supplied to the corresponding connected air bag 5 through the first inflation port 13 for inflation. Simultaneously, the air in the second fluid channel 12 is supplied to the corresponding connected air bag 5 through the second inflation port 14 for inflation. After the third valve module 4 is closed, the air bag 5 corresponding to the first inflation port 13 and the air bag 5 corresponding to the second inflation port 14 are in a pressure-maintaining state. Alternatively, the third valve module 4 remains open, and when the first valve module 2 and the second valve module 3 are switched to the deflated state, the gas in the air bag 5 corresponding to the first inflation port 13 flows back to the first valve module 2 through the first fluid channel 11 and the first air inlet 15 for deflation. Synchronously, the gas in the air bag 5 corresponding to the second inflation port 13 flows back to the second valve module 3 through the second fluid channel 12 and the second air inlet 16 for deflation, thereby realizing the synchronous inflation and deflation of the corresponding air bags 5 of the first air bag group and the second air bag group.

[0043] In another preferred embodiment, for the above-mentioned fluid distribution device, the fluid channel is not limited to the first fluid channel 11 and the second fluid channel 12, but may be multiple, and the multiple fluid channels are independent of each other and may be integrally formed on the housing 1 or assembled on the housing 1. When there are multiple fluid channels, a third fluid channel, a fourth fluid channel, a fifth fluid channel, etc. are correspondingly provided, and a third inflation port, a fourth inflation port, or a fifth inflation port, etc. are correspondingly provided, wherein the third inflation port, the fourth inflation port, or the fifth inflation port, etc. can be respectively provided as at least one, so that the third fluid channel, the fourth fluid channel, and the fifth fluid channel, etc. are respectively fluidically connected to the third air bag group, the fourth air bag group, and the fifth air bag group, etc.

[0044] Moreover, for the above-mentioned fluid distribution device, it is configured that between each air bag group, such as the first air bag group, the second air bag group, the third air bag group, the fourth air bag group and the fifth air bag group, the multiple air bags 5 in each group correspond one to one with the multiple air bags 5 in another group, and the corresponding multiple air bags 5 can be uniformly controlled to be opened or closed synchronously through a third valve module 4, so as to realize that a single third valve module 4 controls the synchronous inflation and deflation of multiple air bags 5.

[0045] For the third valve module 4, see Figures 1 to 3The third valve module 4 includes a valve core 41 and an actuator 42. The valve core 41 includes a first sealing portion 411, a second sealing portion 412, and a connecting portion 413. The first sealing portion 411 and the second sealing portion 412 are fixed to the connecting portion 413. The first sealing portion 411 is located at the first inflation port 13 to close the first inflation port 13, and the second sealing portion 412 is located at the second inflation port 14 to close the second inflation port 14. The actuator 42 is connected to the connecting portion 413 and is used to drive the connecting portion 413 to move, so that the first sealing portion 411 and the second sealing portion 412 move synchronously with the connecting portion 413, thereby realizing the synchronous opening and closing of the first inflation port 13 and the second inflation port 14.

[0046] In some embodiments, the first sealing portion 411 is specifically disposed within the first fluid channel 11 at a location corresponding to the first inflation port 13. It can extend and retract within the first fluid channel 11 following the movement of the connecting portion 413 to open or close the first inflation port 13. Specifically, the first sealing portion 411 moves against the first inflation port 13 to seal the first inflation port 13. When the first sealing portion 411 moves away from the first inflation port 13, a gap is formed, thereby opening the first inflation port 13. The second sealing portion 412 is specifically disposed within the second fluid channel 12 at a location corresponding to the second inflation port 14. It can extend and retract within the second fluid channel 12 following the movement of the connecting portion 413 to open or close the second inflation port 14. Specifically, the second sealing portion 412 moves against the second inflation port 14 to seal the second inflation port 14. When the second sealing portion 412 moves away from the second inflation port 14, a gap is formed, thereby opening the second inflation port 14.

[0047] In some other embodiments, when the fluid distribution device is provided with a third fluid channel, a fourth fluid channel, a fifth fluid channel, etc., and is correspondingly provided with a third inflation port, a fourth inflation port or a fifth inflation port, etc., it is obvious that the valve core 41 can also be correspondingly provided with a third sealing portion, a fourth sealing portion, a fifth connecting portion, etc. fixed to the connecting portion 413.

[0048] The above-mentioned fluid distribution device is provided with a third valve module 4 for controlling the synchronous opening and closing of the first inflation port 13 of the first fluid channel 11 and the second inflation port 14 of the second fluid channel 12, thereby effectively reducing the setting of the valve module for controlling the opening and closing of the inflation port, reducing the cost of the fluid distribution device, and thereby reducing the integrated volume of the overall fluid distribution device.

[0049] In some preferred embodiments, for the above-mentioned fluid distribution device, please refer to Figures 1 to 3The housing 1 is further provided with a first flow chamber 17 and a second flow chamber 18. The first flow chamber 17 and the second flow chamber 18 are isolated from each other and may be integrally formed or assembled on the housing 1. The first flow chamber 17 is connected to the first fluid channel 11 via the first inflation port 13 and is used to communicate with the external air bag 5. The second flow chamber 18 is connected to the second fluid channel 12 via the second inflation port 14 and is used to communicate with the external air bag 5.

[0050] In some embodiments of the fluid distribution device, corresponding to the at least one first inflation port 13 provided on the first fluid channel 11, at least one first flow chamber 17 is provided, such as one or more first flow chambers 17, and the plurality of first flow chambers 17 are isolated and independent from each other. The plurality of first flow chambers 17 are respectively connected to the first fluid channel 11 through the plurality of first inflation ports 13, i.e., one first flow chamber 17 is connected to the first fluid channel 11 through one first inflation port 13, and each first flow chamber 17 is fluidically connected to one air bag 5. Similarly, corresponding to the at least one second inflation port 14 provided on the second fluid channel 12, at least one second flow chamber 18 is provided, such as one or more second flow chambers 18, and the plurality of second flow chambers 18 are isolated and independent from each other. The plurality of second flow chambers 18 are respectively connected to the second fluid channel 12 through the plurality of second inflation ports 14, i.e., one second flow chamber 18 is connected to the second fluid channel 12 through one second inflation port 14, and each second flow chamber 18 is fluidically connected to one air bag 5.

[0051] In some embodiments, for the above-mentioned fluid dispensing device, see Figure 2 and Figure 3 The first flow chamber 17 is provided with a first interface 171 for connecting the first flow chamber 17 with the external air bag 5, and a first air vent 172 for connecting the first flow chamber 17 with the external atmosphere. Furthermore, the third valve module 4 is further provided with a first valve block 43, which is linked to the first sealing portion 411 via a connecting rod. The connecting rod can be a toggle lever structure, with its middle position supported on a raised fulcrum and its ends connected to the first valve block 43 and the first sealing portion 411, respectively.

[0052] The linkage function of the first sealing portion 411 on the first valve block 43 includes the following: when the first sealing portion 411 moves to close the first inflation port 13, it drives the connecting rod to link with the first valve block 43 to open the first deflation port 172, so that when the first sealing portion 411 closes the first inflation port 13, the corresponding connected air bag 5 stops inflating, and the first deflation port 172 is opened, allowing the gas in the corresponding air bag 5 to be discharged to the atmosphere through the first deflation port 172, thereby achieving an independent deflation function. When the first sealing portion 411 moves to open the first inflation port 13, it drives the connecting rod to link with the first valve block 43 to close the first deflation port 172, so that when the first sealing portion 411 opens the first inflation port 13, the corresponding connected air bag 5 starts inflating, and the first deflation port 172 is closed to prevent deflation of the air bag 5, thereby ensuring effective inflation of the air bag 5.

[0053] In some embodiments, only the first flow chamber 17 may be provided without the second flow chamber 18. When only the first flow chamber 17 is provided, the air bag connected to the first flow chamber 17 can be deflated through the first deflation port 172 without having to flow back to the first fluid channel 11 for deflation. This allows the air bag 5 connected to the first flow chamber 17 to not have a pressure-maintaining function when the first inflation port 13 is closed, so that the corresponding air bag 5 can be adapted to a pneumatic massage system that cyclically inflates and deflates the air bag to achieve a massage effect. At the same time, the air bag 5 connected to the second inflation port 14 needs to flow back to the second fluid channel 12 for deflation, so that the air bag 5 connected to the second inflation port 14 has a pressure-maintaining function when the second inflation port 14 is closed, so that the corresponding air bag 5 can be adapted to a pneumatic lumbar support system that maintains pressure after the air bag is inflated.

[0054] In some embodiments, for the above-mentioned fluid dispensing device, see Figure 2 and Figure 3 The second flow chamber 18 is provided with a second port 181 for connecting the second flow chamber 18 with the external air bag 5, and a second vent 182 for connecting the second flow chamber 18 with the external atmosphere. Furthermore, the third valve module 4 is further provided with a second valve block 44, which is linked to the second sealing portion 412 via a connecting rod. The connecting rod can be a toggle lever structure, with its middle position supported on a raised fulcrum and its ends connected to the second valve block 43 and the second sealing portion 412, respectively.

[0055] The linkage effect of the first sealing portion 411 on the first valve block 43 includes: when the second sealing portion 412 moves to close the second inflation port 14, it drives the connecting rod to link the second valve block 44 to open the second deflation port 182, so that when the second sealing portion 412 closes the second inflation port 14, the corresponding connected air bag 5 stops inflating, and the second deflation port 182 is opened, allowing the gas in the corresponding air bag 5 to be discharged to the atmosphere through the second deflation port 182, thereby achieving an independent deflation function. When the second sealing portion 412 moves to open the second inflation port 14, it drives the connecting rod to link the second valve block 44 to close the second deflation port 182, so that when the second sealing portion 412 opens the second inflation port 14, the corresponding connected air bag 5 starts inflating, and the second deflation port 182 is closed to prevent deflation of the air bag 5, thereby ensuring effective inflation of the air bag 5.

[0056] In some embodiments, only the second flow chamber 18 may be provided without the first flow chamber 17. When only the second flow chamber 18 is provided, the air bag connected to the second flow chamber 18 can be deflated through the second deflation port 182 without having to flow back to the second fluid channel 12 for deflation, so that the air bag 5 connected to the second flow chamber 18 does not have a pressure-maintaining function when the second inflation port 14 is closed, so that the corresponding air bag 5 can be adapted to a pneumatic massage system that cyclically inflates and deflates the air bag to achieve a massage effect; at the same time, the air bag 5 connected to the first inflation port 13 needs to flow back to the first fluid channel 11 for deflation, so that the air bag 5 connected to the first inflation port 13 has a pressure-maintaining function when the first inflation port 13 is closed, so that the corresponding air bag 5 can be adapted to a pneumatic lumbar support system that maintains pressure after the air bag is inflated.

[0057] It can be understood that when the first flow chamber 17 and the second flow chamber 18 exist at the same time, the air bag connected to the first flow chamber 17 can be deflated through the first deflation port 172, and the air bag connected to the second flow chamber 18 can be deflated through the second deflation port 182, and both do not need to flow back to the first fluid channel 11 and the second fluid channel 12 for deflation respectively.

[0058] In another preferred embodiment, the housing 1 is further provided with an actuation chamber 19, which is isolated from the first flow chamber 17 and the second flow chamber 18. The actuator 42 is disposed in the actuation chamber 19. A first sealing portion 411 is disposed in the first fluid channel 11, and a second sealing portion 412 is disposed in the second fluid channel 12. One end of a connecting portion 413 extends from the actuation chamber 19 into the first fluid channel 11 and the second fluid channel 12, respectively, and is connected to the first sealing portion 411 and the second sealing portion 412. The other end of the connecting portion 413 extends into the actuation chamber 19 to connect to the actuator 42.

[0059] Also, see Figures 1 to 3A first telescopic seal 414 is provided between the first sealing portion 411 and the wall of the actuating chamber 19 to seal and isolate the first flow chamber 17 from the actuating chamber 19; and / or a second telescopic seal 415 is provided between the second sealing portion 412 and the wall of the actuating chamber 19 to seal and isolate the second flow chamber 18 from the actuating chamber 19. Thus, the actuator 42 in the actuating chamber 19 is isolated from the first fluid channel 11, the second fluid channel 12, the first flow chamber 17, and the second flow chamber 18, preventing gas in the first fluid channel 11, the second fluid channel 12, the first flow chamber 17, and the second flow chamber 18 from entering the actuating chamber 19 and affecting the operation of the actuator 42.

[0060] For the first telescopic seal 414 and the second telescopic seal 415, please refer to Figure 2 and Figure 3 In some embodiments, one end of the first telescopic seal 414 is sleeved over the portion of the first sealing portion 411 near the first inflation port 13 and acts as a sealing cushion. The other end of the first telescopic seal 414 is fixedly connected to the inner wall of the first fluid channel 11. A telescopic structure, such as a telescopic tube structure, is formed between the two ends of the first telescopic seal 44, so that the first telescopic seal 414 seals the connection between the first fluid channel 11 and the actuation chamber 19. Similarly, the second telescopic seal 415 is sleeved over the portion of the second sealing portion 412 near the second inflation port 14 and acts as a sealing cushion. The other end of the second telescopic seal 415 is connected to the inner wall of the second fluid channel 12. A telescopic structure, such as a telescopic tube structure, is formed between the two ends of the second telescopic seal 44, so that the second telescopic seal 415 seals the connection between the second fluid channel 12 and the actuation chamber 19.

[0061] For the first telescopic seal 414 and the second telescopic seal 415, please refer to Figure 4In some other embodiments, one end of the first telescopic seal 414 is sleeved on the part of the first sealing portion 411 close to the first inflation port 13 and acts as a sealing gasket. The other end of the first telescopic seal 414 extends from the first fluid channel 11 through the partition wall between the first fluid channel 11 and the actuating chamber 19 into the actuating chamber 19 and extends outward to form an elastic foot and is connected to the inner wall of the actuating chamber 19. The elastic foot of the first telescopic seal 414 elastically expands and contracts with the movement of the first sealing portion 411, thereby enhancing the sealing effect when closing the first inflation port 13, and the first telescopic seal 414 maintains the first fluid channel 11 and the actuating chamber 19 sealed and isolated. And / or, one end of the second telescopic seal 415 is sleeved on the part of the second sealing portion 412 close to the second inflation port 14 and acts as a sealing pad, and the other end of the second telescopic seal 415 extends from the second fluid channel 12 through the partition wall between the second fluid channel 12 and the actuating chamber 19 into the actuating chamber 19 and extends outward to form an elastic foot and is connected to the inner wall of the actuating chamber 19. The elastic foot of the second telescopic seal 415 elastically expands and contracts with the movement of the second sealing portion 412, thereby enhancing the sealing effect when closing the second inflation port 14, and the second telescopic seal 415 maintains the second fluid channel 12 and the actuating chamber 19 sealed and isolated.

[0062] For the actuator 42, see Figures 1 to 3 The actuator 42 includes a shape memory alloy wire 421, and a circuit board is provided in the shell 1. The two ends of the shape memory alloy wire 421 are electrically connected to the circuit board, and the middle part is connected to the connecting part 413 of the valve core 41. The shape memory alloy wire 421 actuates the valve core 41 in the direction of opening the first inflation port 13 and the second inflation port 14.

[0063] The actuator 42 includes a shape memory alloy wire 421, that is, the third valve module 4 is configured as a valve actuated by the shape memory alloy wire, so that the third valve module 4 has high actuation stability in controlling the synchronous opening and closing of the first and second inflation ports 13 and 14.

[0064] Regarding the process of the actuator 42 opening the first inflation port 13 and the second inflation port 14, in some embodiments, the shape memory alloy wire 421 is energized by the circuit board to heat the shape memory alloy wire 421, thereby causing the shape memory alloy wire 421 to shrink, thereby pulling the connecting portion 413 to move, so that the first sealing portion 411 and the second sealing portion 412 follow the movement of the connecting portion 413 to open the first inflation port 13 and the second inflation port 14 respectively.

[0065] In addition, the actuator 42 also includes a reset element 422, which is optional but not limited to a spring. The reset element 422 actuates the valve core 41 in the direction of closing the first inflation port 13 and the second inflation port 14, so that after the shape memory alloy wire 421 stops working after power is cut off, the reset element 422 actuates the valve core 41 to reset and normally close the first inflation port 13 and the second inflation port 14.

[0066] Regarding the process of the actuator 42 closing the first and second inflation ports 13 and 14, in some embodiments, the circuit board stops supplying power to the shape memory alloy wire 421 to allow the shape memory alloy wire 421 to cool, thereby restoring the shape memory alloy wire 421 to its original shape, thereby causing the reset element 422 to provide a reverse thrust, pushing the connecting portion 413 back to its original position, so that the first sealing portion 411 and the second sealing portion 412 follow the connecting portion 413 back to their original positions and respectively close the first and second inflation ports 13 and 14. Furthermore, under normal conditions, the reset element 422 is used to provide a reverse thrust to the first and second sealing portions 411 and 412 when the first and second sealing portions 411 and 412 respectively close the first and second inflation ports 13 and 14, thereby improving the sealing performance of the first and second sealing portions 411 and 412.

[0067] Based on the arrangement of the reset element 422, for the first telescopic seal 414 and the second telescopic seal 415, in some other embodiments, please refer to Figure 5The first telescopic seal 414 can be an elastic film, such as a film made of elastic rubber, and is covered on the inner wall of the connection between the actuation chamber 19 and the first fluid channel 11. The arm of the connecting portion 413 of the valve core 41 corresponding to the first sealing portion 411 is abutted against the side of the first telescopic seal 414 away from the first sealing portion 411 through the action of the reset element 422. A first positioning spring 71 is provided between the side of the first sealing portion 411 close to the first inflation port 13 and the housing 1. The action of the first positioning spring 71 causes the first sealing portion 411 to be positioned against the side of the first telescopic seal 414 away from the connecting portion 413, and the action of the first positioning spring 71 is less than the action of the reset element 422, so that the first telescopic seal 414 is clamped by the corresponding arms of the first sealing portion 411 and the connecting portion 413. When the device 42 actuates the first sealing part 411 to open the first inflation port 13, the shape memory alloy wire 421 pulls the connecting part 413 to overcome the force of the reset element 422 and move away from the first inflation port 13. The first sealing part 411 moves closely following the connecting part 413 under the force of the first positioning spring 71 to open the first inflation port 13, and the first telescopic seal 414 is stretched along with the first sealing part 411; when the shape memory alloy wire 421 is powered off and stops working, the connecting part 413 moves and resets under the force of the reset element 422, and the first telescopic seal 414 acts on the first sealing part 411 to prompt the first sealing part 411 to reset and close the first inflation port 13. Similarly, the arm of the second sealing portion 412 corresponding to the connecting portion 413 of the valve core 41 abuts against the side of the second telescopic seal 415 facing away from the second sealing portion 412 through the action of the reset element 422, and a second positioning spring 72 is provided between the side of the second sealing portion 412 close to the second inflation port 14 and the housing 1, and the action of the second positioning spring 72 causes the second sealing portion 412 to be positioned and abut against the side of the second telescopic seal 415 facing away from the connecting portion 413, and the action of the second positioning spring 72 is smaller than the action of the reset element 422, so that the second telescopic seal 415 is clamped by the corresponding arms of the second sealing portion 412 and the connecting portion 413; When the actuator 42 actuates the second sealing part 412 to open the second inflation port 14, the shape memory alloy wire 421 pulls the connecting part 413 to overcome the force of the reset element 422 and move away from the second inflation port 14, and the second sealing part 412 moves closely following the connecting part 413 under the force of the second positioning spring 72 to open the second inflation port 14, and the second telescopic seal 415 is stretched along with the second sealing part 412; when the shape memory alloy wire 421 is powered off and stops working, the connecting part 413 moves and resets under the force of the reset element 422, and the second telescopic seal 415 acts on the second sealing part 412 to prompt the second sealing part 412 to reset and close the second inflation port 14.

[0068] The present invention also provides an embodiment of a pneumatic comfort system, which includes an air bag 5, an air source device 6, and the aforementioned fluid distribution device. The air bag 5 is ventilated to the air source device 6 via the aforementioned fluid distribution device. The air source device 6 is fluidically connected to the first valve module 2 and the second valve module 3 at the first air inlet 15 and the second air inlet 16 of the fluid distribution device. Each inflation port or the corresponding flow chamber is ventilated to an air bag 5, each first inflation port 13 or the corresponding first flow chamber 17 is ventilated to an air bag 5, and each second inflation port 14 or the corresponding second flow chamber 18 is ventilated to an air bag 5. The specific structure and function of the aforementioned fluid distribution device can be found in the aforementioned embodiments and will not be detailed here.

[0069] The pneumatic comfort system utilizes the aforementioned fluid distribution device to control the inflation and deflation of the airbags 5, particularly multiple airbags 5. At least two airbags 5 connected to the first and second inflation ports 13, 14, which are synchronously opened and closed by the third valve module 4, can be controlled to achieve efficient and consistent synchronous inflation and deflation. Furthermore, the provision of the aforementioned fluid distribution device reduces the overall space usage and cost of the pneumatic comfort system.

[0070] Regarding the above-mentioned pneumatic comfort system, it should be noted that the air source device 6 includes but is not limited to an air pump, an air compressor or a pump-valve integrated structure, etc.

[0071] Regarding the above-mentioned pneumatic comfort system, it should also be noted that the pneumatic comfort system includes but is not limited to a pneumatic massage system, a pneumatic lumbar support system, a pneumatic wing support system or a combination of the two or more. Among them, when the pneumatic comfort system is a combination of a pneumatic massage system and a pneumatic lumbar support system, there may be a setting mode: a first inflation port 13 of the first fluid channel 11 can be connected to a massage air bag (or a massage air bag can be connected through the first flow chamber 17), and a second inflation port 14 of the corresponding second fluid channel 12 can be connected to a lumbar support air bag (or a lumbar support air bag can be connected through the second flow chamber 18), or a first inflation port 13 of the first fluid channel 11 can be connected to a lumbar support air bag (or a lumbar support air bag can be connected through the first flow chamber 17). 7 is connected to a lumbar support air bag), and a second inflation port 14 of the corresponding second fluid channel 12 can be connected to a massage air bag (or can be connected to a massage air bag through the second flow chamber 18); or, the first inflation port 13 and the second inflation port 14 controlled by the same third valve module 4 are respectively connected to a massage air bag, or are respectively connected to a lumbar support air bag; or, the first inflation port 13 and the second inflation port 14 controlled by the same third valve module 4 are respectively connected to a massage air bag, or are respectively connected to a lumbar support air bag, through the first flow chamber 17 and the second flow chamber 18.

[0072] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A fluid distribution device, characterized in that: include: a housing provided with a first fluid channel and a second fluid channel, the housing further provided with a first inflation port for communicating the first fluid channel with an external air bag, a second inflation port for communicating the second fluid channel with the external air bag, a first air inlet for communicating the first fluid channel with an external air source, and a second air inlet for communicating the second fluid channel with an external air source; a first valve module, disposed in the housing, for controlling the opening and closing of the first air inlet; a second valve module, disposed in the housing, for controlling the opening and closing of the second air inlet; The third valve module is disposed in the housing and is used to control the synchronous opening or closing of the first inflation port and the second inflation port.

2. The fluid dispensing device according to claim 1, wherein: The third valve module includes a valve core and an actuator; The valve core includes a first sealing portion, a second sealing portion, and a connecting portion, wherein the first sealing portion and the second sealing portion are fixed to the connecting portion, the first sealing portion is located at the first inflation port and is used to close the first inflation port, and the second sealing portion is located at the second inflation port and is used to close the second inflation port; The actuator is connected to the connecting portion, and is used to drive the connecting portion to move, so that the first sealing portion and the second sealing portion move synchronously with the connecting portion.

3. The fluid dispensing device according to claim 2, wherein: The housing is further provided with a first flow chamber and a second flow chamber; the first flow chamber is connected to the first fluid channel through the first inflation port, and the first flow chamber is used to communicate with an external air bag; the second flow chamber is connected to the second fluid channel through the second inflation port, and the second flow chamber is used to communicate with an external air bag; The housing is further provided with an actuation chamber, which is isolated from the first flow chamber and the second flow chamber, and the actuator is provided in the actuation chamber.

4. The fluid distribution device according to claim 3, characterized in that: A first telescopic seal is provided between the first sealing portion and the wall of the actuating chamber, for sealing and isolating the first flow chamber and the actuating chamber; and / or, A second telescopic sealing member is provided between the second sealing portion and the wall of the actuating chamber, for sealing and isolating the second flow chamber from the actuating chamber.

5. The fluid dispensing device according to claim 3, wherein: The first flow chamber is provided with a first interface for connecting the first flow chamber with an external air bag, and a first air release port for connecting the first flow chamber with the external atmosphere; The third valve module is also provided with a first valve block, which is linked to the first sealing part through a connecting rod. When the first sealing part moves to close the first inflation port, it drives the connecting rod to link the first valve block to open the first deflation port. When the first sealing part moves to open the first inflation port, it drives the connecting rod to link the first valve block to close the first deflation port.

6. The fluid dispensing device according to claim 3, wherein: The second flow chamber is provided with a second interface for connecting the second flow chamber with an external air bag, and a second air release port for connecting the second flow chamber with the external atmosphere; The third valve module is also provided with a second valve block, which is linked to the second sealing part through a connecting rod. When the second sealing part moves to close the second inflation port, the connecting rod drives the second valve block to open the second deflation port. When the second sealing part moves to open the second inflation port, the connecting rod drives the second valve block to close the second deflation port.

7. The fluid dispensing device according to claim 2, wherein: The actuator includes a shape memory alloy wire that actuates the valve core in a direction to open the first and second inflation ports.

8. The fluid dispensing device according to claim 2, wherein: The actuator further includes a restoring element configured to actuate the valve core in a direction of closing the first and second inflation ports.

9. A pneumatic comfort system, characterized in that: include: airbags; Air source device; The fluid distribution device according to any one of claims 1 to 8, wherein the air bag is ventilatedly connected to the air source device through the fluid distribution device.

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