Fluid distribution device and pneumatic comfort system

Abstract

The embodiment of the utility model relates to the technical field of fluid distribution, in particular to a fluid distribution device and a pneumatic comfort system.The fluid distribution device comprises a sealing gasket, a shell and an actuating assembly, the sealing gasket comprises a base part and a first sealing part, and the first sealing part is arranged on the base part; the shell is provided with a first medium opening and a second medium opening, the base divides the inner space of the shell into an actuating chamber and a flowing chamber, the first medium opening is communicated with the second medium opening through the flowing chamber, and at least one first valve port leading to the second medium opening from the flowing chamber is formed in the shell. At least a portion of the actuation assembly is disposed within the actuation chamber, and the actuation assembly cooperates with the base portion to move the first seal portion from the open position to the closed position or from the closed position to the open position. By means of the mode, the inner space of the shell is divided into the actuating chamber and the flowing chamber through the base part, the actuating chamber and the flowing chamber are sealed and isolated, and therefore the sealing performance is good.

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 and a pneumatic comfort system. Background Art

[0002] In order to improve the comfort of riding, automobile seats are all equipped with a pneumatic comfort system. In the pneumatic comfort system, an air pump supplies air to a plurality of air bags, and a control valve group is used to switch and control the deflation of the plurality of air bags, so as to realize the inflation and deflation of the air bags, thereby massaging the passengers.

[0003] However, in the process of implementing the embodiments of the present utility model, the inventors found some rotation-switching solutions. For example, some control valve groups include a switching mechanism, a valve body and a sealing member. The valve body is provided with a plurality of deflation ports and communication ports. The switching mechanism includes a driver and a switching disk. The switching disk is arranged in the valve body. The switching disk and the valve body clamp the sealing member. The switching disk is provided with a valve port. The driver is opposite to the valve port. The driver drives the switching disk to rotate to switch the valve port, so that the valve port is communicated with the deflation port, and the gas is discharged along the deflation port, the valve port and the communication port. In this way, the rotating components need to be able to cooperate with rotation and also need to achieve dynamic sealing at the valve port. During long-term use, it is easy to cause poor sealing performance. 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, it is impossible to make such rotating components both be able to cooperate with rotation and be able to achieve dynamic sealing at the valve port, and it is easy to cause poor sealing performance during long-term use. The present utility model can achieve the sealed isolation between the flow chamber and the flow chamber, and can also achieve very good dynamic sealing.

[0005] To solve the above technical problem, a technical solution adopted by the present utility model is: to provide a fluid distribution device, including a gasket, a housing and an actuating assembly;

[0006] The gasket includes a base portion and a first sealing portion, and the first sealing portion is arranged on the base portion; the housing is provided with a first medium opening and a second medium opening. The base portion divides the internal space of the housing into an actuating chamber and a flow chamber. The first medium opening is communicated with the second medium opening through the flow chamber. At least one first valve port leading from the flow chamber to the second medium opening is arranged inside the housing. The first sealing portion can move between a closed position for closing the first valve port and an open position for opening the first valve port; at least a part of the actuating assembly is arranged in the actuating chamber, and the actuating assembly cooperates with the base portion to enable the first sealing portion to move from the open position to the closed position or from the closed position to the open position.

[0007] Optionally, the actuating assembly includes an actuator and a transmission mechanism. The actuator is connected to the transmission mechanism and cooperates with the base through the transmission mechanism so that the first sealing portion can move from an open position to a closed position or from a closed position to an open position.

[0008] Optionally, the fluid dispensing device further includes a pusher. The pusher is disposed on the base, and the transmission mechanism cooperates with the base through the pusher. Optionally, the actuating assembly includes an actuator and a transmission mechanism. The actuator is connected to the transmission mechanism and drives the first sealing portion to move from an open position to a closed position through the transmission mechanism;

[0009] The base has an elastic restoring force, and the base can drive the first sealing portion to move from a closed position to an open position.

[0010] Optionally, the actuating assembly includes an actuator and a transmission mechanism. The actuator is connected to the transmission mechanism and drives the first sealing portion to move from a closed position to an open position through the transmission mechanism;

[0011] The base has an elastic restoring force, and the base can drive the first sealing portion to move from an open position to a closed position.

[0012] Optionally, the actuating assembly includes an actuator and a transmission mechanism. The actuator is connected to the transmission mechanism and drives the first sealing portion to move from an open position to a closed position through the transmission mechanism;

[0013] The fluid dispensing device further includes a reset element, and the reset element can drive the first sealing portion to move from a closed position to an open position.

[0014] Optionally, the actuating assembly includes an actuator and a transmission mechanism. The actuator is connected to the transmission mechanism and drives the first sealing portion to move from a closed position to an open position through the transmission mechanism;

[0015] The fluid dispensing device further includes a reset element, and the reset element can drive the first sealing portion to move from an open position to a closed position.

[0016] Optionally, the transmission mechanism includes a slider, a lead screw, and a guide rail. The slider is mounted on the guide rail and can slide along the guide rail. The slider is provided with a threaded hole, and the lead screw is connected to the slider through the threaded hole. One end of the lead screw is connected to the rotating shaft of the actuator, and the slider abuts against the pusher during at least a part of the sliding process along the guide rail.

[0017] Optionally, the housing is provided with a plurality of the second medium openings and a plurality of the first valve openings, and the plurality of the first valve openings are arranged linearly;

[0018] The gasket includes a plurality of the first sealing portions, and the plurality of the first sealing portions are disposed on the base;

[0019] The fluid distribution device includes a plurality of the pushing members, and the plurality of the pushing members correspond to the plurality of the first sealing portions one by one;

[0020] During the sliding of the sliding member along the guide rail, the sliding member abuts against the plurality of the pushing members in sequence.

[0021] Optionally, the pushing member is provided with at least one arc surface, and the pushing member cooperates with the transmission mechanism through the arc surface.

[0022] Optionally, the pushing member is a sphere, the base is provided with a receiving groove, and at least a part of the pushing member is received in the receiving groove and can rotate freely in the receiving groove.

[0023] Optionally, the transmission mechanism includes a rotating member, the rotating member is connected to the rotating shaft of the actuator, a groove is provided on the outer side surface of the rotating member, during the rotation of the rotating member, the pushing member abuts against the outer side surface of the rotating member, and at least a part of the pushing member enters the groove for at least one stroke, so that the first sealing portion moves relative to the first valve opening.

[0024] Optionally, the housing includes an inner housing and a plurality of outer housings, the inner housing is provided with the actuation chamber, each outer housing is provided with a flow chamber, the plurality of outer housings are mounted on the inner housing, and the plurality of flow chambers surround the actuation chamber;

[0025] The number of the gaskets is equal to the number of the outer housings, and the gaskets are mounted between the outer housings and the inner housing to seal the gap between the outer housings and the inner housing;

[0026] Both the first medium opening and the second medium opening are provided on the outer housing;

[0027] The fluid distribution device includes a plurality of the pushing members, and the plurality of the pushing members correspond to the plurality of the first sealing portions one by one;

[0028] When the rotating member rotates, at least a part of the plurality of the pushing members enters the groove in sequence, so that the plurality of the first sealing portions move relative to the first valve opening in sequence.

[0029] Optionally, the gasket further includes a second sealing portion;

[0030] The housing is provided with a third medium opening, the third medium opening is communicated with the second medium opening through the flow chamber, a second valve port leading from the flow chamber to the third medium opening is arranged inside the housing, and the second sealing portion can move from an open position to a closed position or from a closed position to an open position;

[0031] The actuating assembly cooperates with the base so that the second sealing portion moves from an open position to a closed position or from a closed position to an open position.

[0032] To solve the above technical problems, another technical solution adopted by the present utility model is: to provide a pneumatic comfort system, including an airbag, an air source and the above-mentioned fluid distribution device, and the air source is communicated with the airbag through the fluid distribution device.

[0033] In the embodiment of the present utility model, the inner space of the housing is divided into an actuating chamber and a flow chamber by the base, and the actuating chamber and the flow chamber are sealed and isolated from each other. The base is not clamped and fixed with the actuating assembly through the housing, so that the sealing performance is good.

[0034] Furthermore, the transmission mechanism cooperates with the base through the pushing member to open and close the first valve port by the first sealing portion. During the process of the first sealing portion opening and closing the first valve port, the base does not directly contact with the transmission mechanism to generate friction, thereby achieving good dynamic sealing.

[0035] Furthermore, since the pushing member is a sphere, the cooperation mode between the sphere and the transmission mechanism changes the sliding friction into rolling friction, and both the friction resistance and heat generation are significantly reduced, reducing noise during the process of the pushing member actuating the base and improving the mute effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in 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.

[0037] Figure 1 is a schematic structural diagram of a fluid distribution device of the present utility model;

[0038] Figure 2 is a schematic cross-sectional view of the structure of a fluid distribution device of the present utility model;

[0039] Figure 3 is another schematic cross-sectional view of the structure of a fluid distribution device of the present utility model;

[0040] Figure 4It is a schematic structural diagram of a partial housing, a gasket, a pushing member, and a reset element of a fluid distribution device of the present utility model;

[0041] Figure 5 It is a schematic cross-sectional structural diagram of a partial housing, a gasket, a pushing member, and a reset element of a fluid distribution device of the present utility model;

[0042] Figure 6 It is a schematic structural diagram of another actuating assembly of a fluid distribution device of the present utility model;

[0043] Figure 7 It is a schematic structural diagram of another fluid distribution device of the present utility model;

[0044] Figure 8 It is a schematic cross-sectional structural diagram of another fluid distribution device of the present utility model;

[0045] Figure 9 It is an exploded schematic structural diagram of another fluid distribution device of the present utility model;

[0046] Figure 10 It is a schematic structural diagram of yet another fluid distribution device of the present utility model

[0047] Figure 11 It is a schematic cross-sectional structural diagram of yet another fluid distribution device of the present utility model;

[0048] Figure 12 It is an exploded schematic structural diagram of yet another fluid distribution device of the present utility model;

[0049] Explanation of reference numerals:

[0050] 100, fluid distribution device;

[0051] 1, gasket; 11, base; 12, first sealing portion; 13, second sealing portion; 14, receiving groove; 15, clamping groove;

[0052] 2, housing; 21, inner housing; 22, outer housing; 201, first medium opening; 202, second medium opening; 203, actuating chamber; 204, flow chamber; 205, first valve port; 206, communication groove; 207, third medium opening; 208, second valve port;

[0053] 3, actuating assembly; 31, actuator; 32, transmission mechanism; 321, sliding member; 3211, threaded hole; 322, lead screw; 323, guide rail; 324, moving member; 325, rotating member; 3251, groove;

[0054] 4, pushing member;

[0055] 5, reset element. Detailed implementation mode

[0056] 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.

[0057] 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 used 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.

[0058] Please refer to Figures 1 - 2 , the fluid distribution device 100 includes a gasket 1, a housing 2 and an actuating assembly 3. The gasket 1 includes a base 11 and a first sealing portion 12, and the first sealing portion 12 is disposed on the base 11; the housing 2 is provided with a first medium opening 201 and a second medium opening 202, and the base 11 divides the internal space of the housing 2 into an actuating chamber 203 and a flow chamber 204. The first medium opening 201 communicates with the second medium opening 202 through the flow chamber 204. At least one first valve port 205 leading from the flow chamber 204 to the second medium opening 202 is provided inside the housing 2. The first sealing portion 12 can move between a closed position for closing the first valve port 205 and an open position for opening the first valve port 205 to switch the opening and closing state of the first valve port 205; at least a part of the actuating assembly 3 is disposed in the actuating chamber 203, and the actuating assembly 3 cooperates with the base 11 to enable the first sealing portion 12 to move from the open position to the closed position or from the closed position to the open position. By dividing the internal space of the housing 2 into the actuating chamber 203 and the flow chamber 204 through the base 11 and sealingly isolating the actuating chamber 203 and the flow chamber 204, the base 11 is not clamped and fixed by the housing 2 and the actuating assembly 3, so that the sealing performance is good.

[0059] For the above-mentioned actuating assembly 3, please refer to Figure 2, the actuating assembly 3 includes an actuator 31 and a transmission mechanism 32. The actuator 31 is connected to the transmission mechanism 32 and cooperates with the base 11 through the transmission mechanism 32 so that the first sealing portion 12 can move from the open position to the closed position or from the closed position to the open position. Specifically, the actuator 31 actuates the transmission mechanism 32 to move, and cooperates with the base 11 through the transmission mechanism 32 to move the first sealing portion 12 to open or close the first valve port 205, thereby enabling the first medium opening 201 to communicate with the second medium opening 202 through the flow chamber 204, or disconnecting the first medium opening 201 from the second medium opening 202.

[0060] In some embodiments, the fluid dispensing device 100 further includes a pushing member 4. The pushing member 4 is disposed on the base 11, and the transmission mechanism 32 cooperates with the base 11 through the pushing member 4 so that the transmission mechanism 32 does not come into contact with the base 11 during movement to generate friction, thereby achieving a good dynamic seal between the actuating chamber 203 and the flow chamber 204.

[0061] In some embodiments, in order to enable the transmission mechanism 32 to cooperate with the base 11 through the pushing member 4, the housing 2 is provided with a communication groove 206. The communication groove 206 communicates with the actuating chamber 203, and a part of the pushing member 4 extends into the actuating chamber 203 from the communication groove 206.

[0062] In some embodiments, please refer to Figure 2 , the pushing member 4 is provided with at least one arc surface, and the pushing member 4 cooperates with the transmission mechanism 32 through the arc surface, thereby reducing the friction force between the transmission mechanism 32 and the pushing member 4.

[0063] In some embodiments, please refer to Figure 2 , the pushing member 4 is a sphere. One end of the base 11 away from the first sealing portion 12 is provided with a receiving groove 14. At least a part of the pushing member 4 is received in the receiving groove 14 and can rotate freely in the receiving groove 14, so that the transmission mechanism 32 is in rolling contact with the pushing member 4, thereby reducing the friction force between the transmission mechanism 32 and the pushing member 4.

[0064] In some embodiments, the actuating assembly 3 includes an actuator 31 and a transmission mechanism 32. The actuator 31 is connected to the transmission mechanism 32 and drives the first sealing portion 12 to move from the open position to the closed position through the transmission mechanism 32. The first sealing portion 12 is disposed on the side of the first valve port 205 facing the base portion 11, and the base portion 11 has an elastic restoring force, such that the base portion 11 can drive the first sealing portion 12 to move from the closed position to the open position. Specifically, when the transmission mechanism 32 actuates the pusher 4, a part of the base portion 11 and the first sealing portion 12 to move, so that the first sealing portion 12 moves from the open position to the closed position, thereby closing the first valve port 205. When the actuating force of the transmission mechanism 32 acting on the pusher 4 is less than the elastic restoring force of the base portion 11, under the action of the elastic restoring force of the base portion 11, the base portion 11 drives the first sealing portion 12 to move from the closed position to the open position, thereby opening the first valve port 205. Furthermore, in another embodiment, please refer to Figure 2 , the first sealing portion 12 is disposed on the side of the first valve port 205 facing away from the base portion 11, and the base portion 11 can drive the first sealing portion 12 to move from the open position to the closed position. Specifically, when the transmission mechanism 32 actuates the pusher 4, a part of the base portion 11 and the first sealing portion 12 to move, so that the first sealing portion 12 moves from the closed position to the open position, thereby opening the first valve port 205. When the actuating force of the transmission mechanism 32 acting on the pusher 4 is less than the elastic restoring force of the base portion 11, under the action of the elastic restoring force of the base portion 11, the base portion 11 drives the first sealing portion 12 to move from the closed position to the open position, thereby closing the first valve port 205.

[0065] It should be noted that the first sealing portion 12 can be disposed on the side of the first valve port 205 facing the base portion 11 or on the side of the first valve port 205 facing away from the base portion 11 according to actual requirements.

[0066] It can be understood that, in some embodiments, please refer to Figure 5, the base 11 does not have an elastic restoring force. The fluid distribution device 100 further includes a reset element 5. One end of the reset element 5 abuts against the first sealing portion 12, and the other end of the reset element 5 abuts against the wall surface of the flow chamber 204. The reset element 5 can drive the first sealing portion 12 to move from the closed position to the open position. Specifically, when the transmission mechanism 32 actuates the pusher 4, a part of the base 11 and the first sealing portion 12 to move, so that the first sealing portion 12 moves from the open position to the closed position, thereby closing the first valve port 205. When the actuating force of the transmission mechanism 32 acting on the pusher 4 is less than the restoring force of the reset element 5, under the action of the reset element 5, the first sealing portion 12 is actuated to move from the closed position to the open position, thereby opening the first valve port 205. Furthermore, in another embodiment, the reset element 5 can drive the first sealing portion 12 to move from the open position to the closed position. Specifically, when the transmission mechanism 32 actuates the pusher 4, a part of the base 11 and the first sealing portion 12 to move, so that the first sealing portion 12 moves from the closed position to the open position, thereby opening the first valve port 205. When the actuating force of the transmission mechanism 32 acting on the pusher 4 is less than the restoring force of the reset element 5, under the action of the reset element 5, the first sealing portion 12 is actuated to move from the closed position to the open position, thereby closing the first valve port 205.

[0067] In some embodiments, the reset member is an elastic member. Specifically, the reset member is a spring.

[0068] In some embodiments, please refer to Figure 2 and Figure 3 , the base 11 and the first sealing portion 12 are integrally designed, so that the structure and manufacturing process of the gasket 1 are simple, and the assembly process is optimized to reduce costs.

[0069] In some embodiments, please refer to Figure 4 and Figure 5 , a part of the base 11 and another part of the base 11 are separately designed. A clamping groove 15 is provided on the other part of the base 11. One part of the base 11 is sealingly clamped in the clamping groove 15. The other part of the base 11, the pusher 4 and the first sealing portion 12 are integrally designed.

[0070] In some embodiments, please refer to Figure 2, the transmission mechanism 32 includes a sliding member 321, a lead screw 322, and a guide rail 323. The sliding member 321 is disposed in the actuation chamber 203. The sliding member 321 is mounted on the guide rail 323 and slides along the guide rail 323. The sliding member 321 is provided with a threaded hole 3211. The guide rail 323 is fixed to the side wall of the actuation chamber 203. The lead screw 322 is disposed in the actuation chamber 203. The lead screw 322 is connected to the sliding member 321 through the threaded hole 3211. The actuator 31 is fixed in the actuation chamber 203. The rotating shaft of the actuator 31 is connected to one end of the lead screw 322. Among them, the actuator 31 is used to drive the lead screw 322 to rotate, so as to drive the sliding member 321 to reciprocate along the guide rail 323, so that at least a section of the stroke of the sliding member 321 abuts against the pushing member 4 during the sliding process along the guide rail 323, so that the first sealing portion 12 is pushed by the base portion 11 to move relative to the first valve port 205 to close or open the first valve port 205. In this embodiment, the actuator 31 is a motor.

[0071] It can be understood that, in some embodiments, the structure of the transmission mechanism 32 is not limited to the above structure. The structure of the transmission mechanism 32 is other structures. The sliding member 321 is connected to the pushing member 4. The actuator 31 is used to drive the lead screw 322 to rotate, so as to drive the sliding member 321 to reciprocate along the guide rail 323, and cooperate with the base portion 11 to actuate the first sealing portion 12 to reciprocate relative to the first valve port 205, so that the first sealing portion 12 reciprocates between the closed position and the open position. In this embodiment, the actuator 31 is a motor.

[0072] It can be understood that, in some embodiments, please refer to Figure 6 , the structure of the transmission mechanism 32 is not limited to the above structure. The structure of the transmission mechanism 32 is other structures. The transmission mechanism 32 includes a moving member 324. The moving member 324 is connected to the pushing member 4. The actuator 31 generates a magnetic force to actuate the moving member 324 to move after being powered on, and cooperates with the base portion 11 to actuate the first sealing portion 12 to move relative to the first valve port 205. In this embodiment, the actuator 31 is an electromagnetic coil.

[0073] In some embodiments, please refer to Figure 2 , the housing 2 is provided with a plurality of second medium openings 202 and a plurality of first valve ports 205. The plurality of first valve ports 205 are linearly arranged. The gasket 1 includes a plurality of first sealing portions 12. The plurality of first sealing portions 12 are disposed on the base portion 11. The plurality of first sealing portions 12 are linearly arranged. The fluid distribution device 100 includes a plurality of pushing members 4. The plurality of pushing members 4 correspond to the plurality of first sealing portions 12 one by one. The sliding member 321 abuts against the plurality of pushing members 4 in sequence during the sliding process along the guide rail 323.

[0074] In some embodiments, please refer to Figures 1 - 3, the gasket 1 further includes a second sealing portion 13 which is an extension of the first sealing portion 12. The housing 2 is provided with a third medium opening 207 which communicates with the second medium opening 202 through a flow chamber 204. A second valve port 208 leading from the flow chamber 204 to the third medium opening 207 is provided inside the housing 2. The second valve port 208 is disposed opposite to the first valve port 205. The second sealing portion 13 is capable of moving between a closed position closing the second valve port 208 and an open position opening the second valve port 208. The actuating assembly 3 cooperates with the base portion 11 to move the second sealing portion 13 from the open position to the closed position or from the closed position to the open position. Specifically, when the first sealing portion 12 moves from the open position to the closed position to close the first valve port 205, the transmission mechanism 32 actuates the second sealing portion 13 to move through the pusher 4 and the base portion 11, so that the second sealing portion 13 moves from the closed position to the open position to open the second valve port 208. When the first sealing portion 12 moves from the closed position to the open position to open the first valve port 205, under the elastic restoring force of the base portion 11 or the restoring force of the resetting element 5, the base portion 11 or the resetting element 5 drives the second sealing portion 13 to move from the open position to the closed position to close the second valve port 208. In other words, when the first sealing portion 12 is in the state of opening the first valve port 205, the second sealing portion 13 is in the state of closing the second valve port 208, and when the first sealing portion 12 is in the state of closing the first valve port 205, the second sealing portion 13 is in the state of opening the second valve port 208.

[0075] It can be understood that in some embodiments, the structures of the transmission mechanism 32, the housing 2 and the gasket 1 are not limited to the above structures, and the structures of the transmission mechanism 32, the housing 2 and the gasket 1 can all be other structures.

[0076] Specifically, please refer to Figures 7 - 9 , the transmission mechanism 32 includes a rotating member 325 which is disposed in the actuating chamber 203. The rotating member 325 is rotatable relative to the actuating chamber 203. The rotating member 325 is connected to the rotating shaft of the actuator 31. A groove 3251 is provided on the outer side surface of the rotating member 325. The actuator 31 is disposed outside the actuating chamber 203 and is fixed to the housing 2. Among them, the actuator 31 is used to drive the rotating member 325 to rotate. During the rotation of the rotating member 325, the pusher 4 abuts against the outer side surface of the rotating member 325, and at least a part of the pusher 4 enters the groove 3251 during at least one stroke, so that the first sealing portion 12 moves relative to the first valve port 205.

[0077] Specifically, the housing 2 includes an inner housing 21 and a plurality of outer housings 22. The actuation chamber 203 is disposed in the inner housing 21. Each outer housing 22 is provided with a flow chamber 204. The plurality of outer housings 22 are mounted on the inner housing 21, and the plurality of flow chambers 204 surround the actuation chamber 203. The first medium opening 201 and the second medium opening 202 are both disposed in the outer housing 22, and the communication groove 206 is disposed in the inner housing 21. The number of the gaskets 1 is equal to the number of the outer housings 22. The gaskets 1 are mounted between the outer housings 22 and the inner housing 21 to seal the gap between the outer housings 22 and the inner housing 21. The fluid distribution device 100 includes a plurality of push members 4, and the plurality of push members 4 correspond to the plurality of first sealing portions 12 one by one. The actuator 31 is fixed to the inner housing 21. When the actuator 31 drives the rotating member 325 to rotate, at least a part of the plurality of push members 4 sequentially enters the groove 3251, so that the plurality of first sealing portions 12 sequentially move relative to the first valve port 205.

[0078] In some embodiments, in order to achieve the effect of generating vibration massage by the airbag, the fluid distribution device 100 with the above structure is applied to the pneumatic comfort system. The fluid distribution device 100 is an exhaust valve. The airbag is communicated with the air source, the second medium opening 202 is communicated with the airbag, and the first medium opening 201 is communicated with the outside. During the operation of the pneumatic comfort system, the air source continuously supplies air to the airbag. The actuator 31 actuates the rotating member 325 to rotate, so as to actuate the plurality of first sealing portions 12 to move sequentially through the push members 4 and the base portion 11, so that the first sealing portions 12 sequentially open the first valve port 205, thereby enabling the plurality of airbags to deflate sequentially during continuous inflation, and realizing deflation of the plurality of airbags at a preset frequency.

[0079] In some embodiments, please refer to Figures 10 - 12 , a third medium opening 207 is disposed in the inner housing 21, a second valve port 208 is disposed on one side of the first valve port 205, a second sealing portion 13 is disposed on the base portion 11, the second sealing portion 13 is disposed on one side of the first sealing portion 12, the second sealing portion 13 is provided with a receiving groove 14, each second sealing portion 13 and each first sealing portion 12 correspond to a push member 4 one by one, and at least a part of each push member 4 is received in a receiving groove 14. It should be noted that when the first sealing portion 12 is in the state of opening the first valve port 205, the second sealing portion 13 is in the state of closing the second valve port 208. When the first sealing portion 12 is in the state of closing the first valve port 205, the second sealing portion 13 is in the state of opening the second valve port 208.

[0080] In the fluid distribution device 100 in the embodiment of the present utility model, the inner space of the housing is divided into an actuation chamber 203 and a flow chamber 204 by the base portion 11, and the actuation chamber 203 and the flow chamber 204 are hermetically isolated. The base portion 11 is not clamped and fixed by the housing 2 and the actuation assembly 3, so that the sealing performance is good.

[0081] The present utility model further provides an embodiment of a pneumatic comfort system. The pneumatic comfort system includes an airbag, an air source, and the above-mentioned fluid distribution device 100. The air source is communicated with the airbag through the fluid distribution device 100. For the structure and function of the fluid distribution device 100, reference may be made to the above-mentioned embodiment, and details will not be repeated here.

[0082] It should be noted that the description and drawings of the present utility model provide 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 do not serve as 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. Moreover, the above-mentioned 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. Further, 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: A sealing gasket, comprising a base and a first sealing portion, wherein the first sealing portion is disposed on the base; A housing is provided with a first medium opening and a second medium opening, the base divides the internal space of the housing into an actuation chamber and a flow chamber, the first medium opening is communicated with the second medium opening through the flow chamber, at least one first valve port leading from the flow chamber to the second medium opening is provided inside the housing, and the first sealing portion can move between a closed position closing the first valve port and an open position opening the first valve port; An actuating assembly, at least a portion of which is disposed in the actuating chamber, and the actuating assembly cooperates with the base to move the first sealing portion from an open position to a closed position or from a closed position to an open position.

2. The fluid dispensing device according to claim 1, characterized in that: The actuating assembly includes an actuator and a transmission mechanism. The actuator is connected to the transmission mechanism and drives the first sealing part to move from an open position to a closed position or from a closed position to an open position through cooperation between the transmission mechanism and the base.

3. The fluid dispensing device according to claim 2, characterized in that: The fluid distribution device further comprises a pushing member, which is arranged on the base, and the transmission mechanism cooperates with the base through the pushing member.

4. The fluid dispensing device according to claim 3, characterized in that: The actuating assembly includes an actuator and a transmission mechanism, wherein the actuator is connected to the transmission mechanism and drives the first sealing portion to move from an open position to a closed position through the transmission mechanism; The base has elastic restoring force, and the base can drive the first sealing part to move from a closed position to an open position.

5. The fluid dispensing device according to claim 3, characterized in that: The actuating assembly includes an actuator and a transmission mechanism, wherein the actuator is connected to the transmission mechanism and drives the first sealing portion to move from a closed position to an open position through the transmission mechanism; The base has elastic restoring force, and the base can drive the first sealing part to move from an open position to a closed position.

6. The fluid dispensing device according to claim 3, characterized in that: The actuating assembly includes an actuator and a transmission mechanism, wherein the actuator is connected to the transmission mechanism and drives the first sealing portion to move from an open position to a closed position through the transmission mechanism; The fluid distribution device further comprises a reset element, and the reset element can drive the first sealing portion to move from a closed position to an open position.

7. The fluid dispensing device according to claim 3, characterized in that: The actuating assembly includes an actuator and a transmission mechanism, wherein the actuator is connected to the transmission mechanism and drives the first sealing portion to move from a closed position to an open position through the transmission mechanism; The fluid distribution device further comprises a reset element, and the reset element can drive the first sealing portion to move from an open position to a closed position.

8. The fluid dispensing device according to any one of claims 4 to 7, characterized in that: The transmission mechanism includes a sliding member, a screw rod and a guide rail. The sliding member is installed on the guide rail and can slide along the guide rail. The sliding member is provided with a threaded hole. The screw rod is connected to the sliding member through the threaded hole. One end of the screw rod is connected to the rotating shaft of the actuator. The sliding member abuts against the pushing member for at least a section of the travel during the sliding process along the guide rail.

9. The fluid dispensing device according to claim 8, characterized in that: The housing is provided with a plurality of second medium openings and a plurality of first valve ports, and the plurality of first valve ports are arranged linearly; The sealing gasket comprises a plurality of the first sealing parts, and the plurality of the first sealing parts are arranged on the base; The fluid distribution device comprises a plurality of the pushing members, and the plurality of the pushing members correspond one-to-one to the plurality of the first sealing parts; The sliding member abuts against the plurality of pushing members in sequence during the sliding process along the guide rail.

10. The fluid dispensing device according to claim 8, characterized in that: The pushing member is provided with at least one arc surface, and the pushing member cooperates with the transmission mechanism through the arc surface.

11. The fluid dispensing device according to claim 8, characterized in that: The pushing member is a sphere, the base is provided with a receiving groove, at least a part of the pushing member is received in the receiving groove, and can rotate freely in the receiving groove.

12. The fluid dispensing device according to any one of claims 4 to 7, characterized in that: The transmission mechanism includes a rotating member, which is connected to the rotating shaft of the actuator. A groove is provided on the outer side of the rotating member. During the rotation of the rotating member, the pushing member abuts against the outer side of the rotating member, and at least a part of the pushing member enters the groove for at least a section of the stroke, so that the first sealing portion moves relative to the first valve port.

13. The fluid dispensing device according to claim 12, characterized in that: The housing comprises an inner shell and a plurality of outer shells, the inner shell is provided with the actuation chamber, each of the outer shells is provided with a flow chamber, the plurality of outer shells are mounted on the inner shell, and the plurality of flow chambers surround the actuation chamber; The number of the sealing gaskets is equal to that of the outer shells, and the sealing gaskets are installed between the outer shell and the inner shell to seal the gap between the outer shell and the inner shell; The first medium opening and the second medium opening are both arranged on the housing; The fluid distribution device comprises a plurality of the pushing members, and the plurality of the pushing members correspond one-to-one to the plurality of the first sealing parts; When the rotating member rotates, at least a portion of the plurality of pushing members sequentially enter the groove, so that the plurality of first sealing portions sequentially move relative to the first valve port.

14. The fluid dispensing device according to any one of claims 1 to 7, characterized in that: The sealing gasket further includes a second sealing portion; The housing is provided with a third medium opening, the third medium opening is communicated with the second medium opening through the flow chamber, a second valve port leading from the flow chamber to the third medium opening is provided inside the housing, and the second sealing portion can move between a closed position closing the second valve port and an open position opening the second valve port; The actuating assembly cooperates with the base to move the second sealing portion from an open position to a closed position or from a closed position to an open position.

15. A pneumatic comfort system, characterized in that: The invention comprises an air bag, an air source and the fluid distributing device according to any one of claims 1 to 14, wherein the air source is connected to the air bag through the fluid distributing device.

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