Pneumatic comfort system and seat

Abstract

The embodiment of the utility model relates to the technical field of pneumatic comfort systems, and particularly discloses a pneumatic comfort system and a seat, the pneumatic comfort system comprises an air source, a fluid switching device and a plurality of air bags, the fluid switching device comprises an actuator, a transmission mechanism and valve units communicated with the air bags in a one-to-one correspondence mode, the air bag is communicated with an air source and an external environment through the valve unit, and in the process that the actuator actuates the valve unit through the transmission mechanism, the valve unit is switched from an air release state for releasing air from the air bag to an inflation state for inflating the air bag and then switched to the air release state; the actuator sequentially actuates the multiple valve units so as to control the multiple air bags to sequentially and alternately complete air inflation and air deflation. By means of the mode, according to the embodiment of the utility model, a pneumatic comfort system which is originally controlled by an electromagnetic valve can be changed into a mode that the gas distribution mechanism and the driving mechanism are matched for control, the integration level of the pneumatic comfort system is improved, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of pneumatic comfort systems, and in particular to a pneumatic comfort system and a seat. Background Art

[0002] With the rapid development of science and technology, people's quality of life is gradually improving. Car massage seats, as a device to enhance users' car driving experience, are favored by more and more users. The pneumatic comfort system is the main operating structure to realize the massage function of car seats. Its final cost and the size of the space it occupies determine the popularity of car massage seats in the automotive field.

[0003] In the process of realizing the utility model, the inventor of the utility model found that: currently, the existing pneumatic comfort system includes an air source, multiple air bags and a gas distribution device. In order to realize the function of inflating different air bags, the gas distribution device usually adopts solenoid valves to control the inflation and deflation of each air bag. However, each solenoid valve can only control one or a group of air bags. The number of solenoid valves required for multiple air bags is relatively large, resulting in a relatively high overall cost of the gas distribution device. In addition, the space occupied by the multiple solenoid valves is also relatively large, which is not conducive to the layout and popularization of the pneumatic comfort system in car massage seats. Utility Model Content

[0004] The utility model is mainly to solve the technical problems that the traditional pneumatic system uses multiple electromagnetic valves to control the inflation and deflation of air bags, the overall cost of the entire air distribution device is high, and the space occupied is also large; to provide a pneumatic comfort system and a seat. The utility model can reduce the manufacturing cost of the pneumatic comfort system.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a pneumatic comfort system, including: an air source, a fluid switching device and a plurality of air bags, the fluid switching device includes an actuator, a transmission mechanism and a valve unit connected to the plurality of air bags in a one-to-one correspondence, the air bags are connected to the air source and the external environment through the valve unit, when the actuator actuates the valve unit through the transmission mechanism, the valve unit switches from a deflated state of deflating the air bag to an inflated state of inflating the air bag, and then switches to the deflated state; the actuator actuates the plurality of valve units in turn to control the plurality of air bags to alternately complete inflation and deflation in turn.

[0006] Optionally, the transmission mechanism includes a first slider, and the actuator is connected to the first slider. The actuator is used to drive the first slider to reciprocate in a preset direction. When the first slider abuts against an actuator in any valve unit, the first slider actuates the valve unit to enter an inflated state. When the first slider is misaligned with the actuator, the actuator causes the valve unit in which it is located to be in a deflated state.

[0007] Optionally, the valve units are arranged side by side on the same side of the moving path of the first slider. Optionally, the valve units are distributed on two opposite sides of the moving path of the first slider.

[0008] Optionally, the valve units are staggered on opposite sides of the moving path of the first sliding block.

[0009] Optionally, the valve units are symmetrically arranged on opposite sides of the moving path of the first sliding block.

[0010] Optionally, the actuator includes a motor and a screw rod, and the first slider is threadedly connected to the screw rod.

[0011] Optionally, the transmission mechanism also includes a second slider, the screw rod has a first half section and a second half section with opposite threads, the first slider is located in the first half section, and the second slider is located in the second half section, so that when the screw rod rotates, the first slider and the second slider move in opposite directions.

[0012] Optionally, the number of the valve units is 4, 5, 8 or 10.

[0013] In order to solve the above technical problems, another technical solution adopted by the present invention is: to provide a chair, comprising a chair body and the above pneumatic comfort system, wherein the pneumatic comfort system is arranged on the chair body.

[0014] The beneficial effects of the embodiments of the utility model are as follows: the embodiments of the utility model adopt an actuator linear drive method to alternately open and close multiple valve units. The valve unit is a purely mechanical structure, replacing the original multi-solenoid valve integrated structure, and does not require a large circuit board to control the valve assembly, so the manufacturing cost is lower, especially for the pneumatic comfort system with multiple air bags, the advantages are more obvious; and because there are not many solenoid valves, the valve group of the entire pneumatic comfort system generates less heat, runs more stably, and has a longer service life.

[0015] In addition, the control of the pneumatic comfort system only needs to control the rotation of the motor according to the frequency of inflation and deflation, which has lower power consumption. In addition, compared with the impact noise generated by the instantaneous response of the solenoid valve, this system has no obvious impact noise when running, which is more suitable for pneumatic massage products with high requirements for silence. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use 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 ordinary technicians in this field, other drawings can be obtained based on the drawings without paying creative work.

[0017] Figure 1 It is an exploded schematic diagram of the pneumatic comfort system provided by an embodiment of the utility model;

[0018] Figure 2 It is an assembly structure diagram of the pneumatic comfort system provided by the embodiment of the utility model;

[0019] Figure 3 is a cross-sectional view of a fluid switching device provided by an embodiment of the utility model;

[0020] Figure 4 It is a schematic diagram of the exploded structure of the pneumatic comfort system with additional air bags and valve units provided in an embodiment of the utility model;

[0021] Figure 5 It is a cross-sectional structural schematic diagram of the valve units provided by the embodiment of the utility model, which are arranged side by side on the same side of the actuating member;

[0022] Figure 6 It is a cross-sectional structural schematic diagram of a pneumatic comfort system in a catwalk mode provided by an embodiment of the utility model;

[0023] Figure 7 It is a cross-sectional structural schematic diagram of another pneumatic comfort system in catwalk mode provided by an embodiment of the utility model;

[0024] Figure 8 It is a cross-sectional structural schematic diagram of another pneumatic comfort system in catwalk mode provided by an embodiment of the utility model;

[0025] Fig. 9 It is a cross-sectional structural schematic diagram of a pneumatic comfort system in a wave mode provided by an embodiment of the utility model;

[0026] Fig.10 It is a schematic diagram of the three-dimensional structure of the actuator provided by the embodiment of the utility model;

[0027] Fig.11 It is a three-dimensional structural schematic diagram of another actuator provided by an embodiment of the utility model;

[0028] Fig.12 is another cross-sectional view of the fluid switching device provided by an embodiment of the utility model;

[0029] Fig.13 yes Fig.12 A partial enlarged view of part A in the middle. DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of the utility model, the utility model is 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 "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 "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 "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by technicians in the technical field of the present invention. The terms used in this specification are only for the purpose of describing specific embodiments and are not used to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0032] See also Figure 1 to Figure 2 The pneumatic comfort system 1000 includes: an air source 1, a plurality of air bags 2 and a fluid switching device 3, wherein the plurality of air bags 2 are connected to the air source 1 through the fluid switching device 3, the air source 1 is used to provide the inflation source of the internal gas for the plurality of air bags 2, and the fluid switching device 3 is used to control the connection or disconnection between the air source 1 and the plurality of air bags 2, so that the plurality of air bags 2 present different states, and the multi-mode switching of the different states of the plurality of air bags 2 is realized by using the fluid switching device 3. The utility model changes the way of controlling the connection state of the air source 1 and the plurality of air bags 2 in the pneumatic comfort system 1000, and no longer relies on the solenoid valve for control, but uses the mechanical method of the fluid switching device 3 for control, so that the manufacturing cost of the pneumatic comfort system 1000 is greatly reduced, and the installation space required for the pneumatic comfort system 1000 as a whole is saved. Compared with the pneumatic comfort system controlled by the solenoid valve, the utility model does not have the heating of related electronic components and the noise problem of the start and stop of a large number of solenoid valves, and only involves the tiny noise and local heating generated by the driver in the fluid switching device 3. In actual work, the utility model has less noise and lower temperature.

[0033] As for the above-mentioned gas source 1, it can be understood that the gas source 1 includes but is not limited to an air pump, a gas cylinder, an air compressor or any other device capable of supplying gas. In this embodiment, preferably, the gas source device is an air pump.

[0034] For the above-mentioned multiple air bags 2, please refer to Figure 2The multiple air bags 2 include multiple first air bags 21, which are distributed according to a preset layout. The air bags 2 are used to abut against the human body in an inflated state, and achieve a massage-like effect on the human body by changing the filling degree of the gas in the air bags 2.

[0035] It is understandable that the preset layout of the multiple first air bags 21 in the multiple air bags 2 needs to be set according to actual needs and pre-planned massage modes, including but not limited to: a rectangular array, a partition arrangement according to human body parts, etc.

[0036] It can be understood that the shape of the first air bag 21 includes but is not limited to: a circle, a square, a polygon or any irregular shape.

[0037] For the above-mentioned fluid switching device 3, please refer to Figure 3 The fluid switching device 3 includes an actuator 31, a transmission mechanism 32, and a valve unit 33 connected to a plurality of air bags in one-to-one correspondence, wherein the transmission mechanism 32 is movably arranged on the actuator 31, the actuator 31 is used to drive the transmission mechanism 32 to move, the actuator 31 and the valve unit 33 are arranged adjacent to each other, and in the process of the actuator 31 driving the transmission mechanism 32 to move, the transmission mechanism 32 can drive the valve unit 33 to move to change the state of the valve unit 33, and the valve unit 33 is used to control the connection state between the air bag and the air source and the external environment, specifically:

[0038] The airbag 2 is connected to the air source 1 and the external environment through the valve unit 33. When the actuator 31 actuates the valve unit 33 through the transmission mechanism 32, the valve unit 33 switches from a deflated state for deflated the airbag 2 to an inflated state for inflated the airbag 2, and then switches to a deflated state; the actuator 31 sequentially actuates multiple valve units 33 to control multiple airbags 2 to alternately complete inflation and deflation in sequence.

[0039] For the actuator 31 mentioned above, see Figure 3 The actuator 31 is disposed at one side of the valve unit 33 along the second direction Y, and the actuator 31 includes a motor and a lead screw.

[0040] For the above-mentioned transmission mechanism 32, please refer to Figure 3 The transmission mechanism 32 includes a first slider 321, and the actuator 31 is connected to the first slider 321, that is, the first slider 321 is threadedly connected to the screw rod. The actuator 31 is used to drive the first slider 321 to reciprocate along a preset direction. When the first slider 321 abuts against an actuator in any valve unit 33, the first slider 321 actuates the valve unit 33 to enter an inflated state. When the first slider 321 is misaligned with the actuator, the actuator causes the valve unit 33 in which it is located to be in a deflated state.

[0041] It should be noted that the above-mentioned preset directions are selected according to actual design requirements, including but not limited to horizontal directions, vertical directions or straight or curved movement directions at any other angles. For ease of understanding, in this embodiment, the movement direction of the first slider 321 is designated as the first direction X, and the movement direction of the valve unit 33 is designated as the second direction Y, wherein the first direction X and the second direction Y are perpendicular.

[0042] Specifically, the actuator 31 is connected to the first slider 321, that is, the first slider 321 is rotatably connected to the actuator 31, and the actuator 31 is used to drive the first slider 321 to reciprocate along the first direction X. When the first slider 321 abuts against a valve unit 33, the first slider 321 actuates the valve unit 33 to move in the opposite direction of the second direction Y so that the first air bag 21 enters an inflated state. When the first slider 321 is separated from the valve unit 33, the valve unit 33 moves along the second direction Y so that the first air bag 21 enters a deflated state.

[0043] It is worth mentioning that in the above-mentioned inflation state and deflation state, the gas source 1 is always in a gas supply state to ensure that the actuator 31 provides sufficient gas in real time when driving the valve unit 33 in the working state, to ensure the timely response of the pneumatic comfort system 1000, and to avoid the situation where the valve unit 33 is in an inflated state due to untimely startup of the gas source mechanism 2, and the gas source mechanism 2 fails to provide gas, and the first air bag 21 is not inflated in time, resulting in a poor user experience of the pneumatic comfort system 1000.

[0044] It can be understood that in the above-mentioned pneumatic comfort system 1000, the switching of the multiple valve units 33 between the two modes of inflation state and deflation state depends on the actuator 31 driving the first slider 321 to move along the first direction X, and the multiple valve units 33 are arranged side by side along the first direction X. Therefore, in the process of the driving component 31 driving the first slider 321 along the first direction X, the first slider 321 sequentially abuts against the multiple valve units 33, and the multiple valve units 33 take turns to execute the inflation state first and then the deflation state.

[0045] In some embodiments, the fluid switching device 3 further includes a shell 34 , and the shell 34 is provided with a receiving cavity, and the fluid switching device 3 is received in the receiving cavity to improve the integration of the pneumatic comfort system 1000 and facilitate installation and maintenance.

[0046] In order to enrich the massage modes of the pneumatic comfort system 1000, such as zone massage for different areas of the human body, improve the massage accuracy of the pneumatic comfort system 1000, etc., it can be understood that the massage modes of the pneumatic comfort system 1000 can be enriched by adding devices or mechanisms that realize corresponding massage functions, including but not limited to adding air bags, adding fluid switching devices, adding air sources, or arbitrarily adding at least two of the above mechanisms or devices.

[0047] Considering the cost of adding corresponding parts and the richness of massage modes, in some preferred embodiments, air bags and fluid switching devices are added, and in order to achieve the control of the newly added flow distribution components at a low cost, a new slider is added without adding a new actuator to achieve this purpose. Figures 4 to 9 As shown, the plurality of air bags 2 further include a first air bag 21 and a second air bag 22 , the valve unit 33 includes a plurality of first valve units 331 and a plurality of second valve units 332 , and the transmission mechanism 32 includes a first slider 321 and a second slider 322 .

[0048] In some preferred embodiments, the valve units 33 are arranged side by side on the same side of the moving path of the first slider 321, that is, the valve units 33 are arranged side by side on the left or right side of the moving path of the first slider 321. It can be understood that in order to coordinate the control of the valve units 33 arranged side by side on the same side, the length of the first slider 321 should be appropriately increased or the first slider 321 and the second slider 322 should be fixedly connected. In this embodiment, it is preferred to extend the length of the first slider 321 so that it can simultaneously control the valve units 33 arranged side by side, and the valve units 33 arranged side by side form a wave mode control method during the movement of the first slider 321.

[0049] For details, please refer to Figure 5 The valve units 33 are arranged side by side on the left side of the moving path of the first slider 321 along the first direction X, that is, multiple first valve units 331 and multiple second valve units 332 are arranged side by side on the left side of the moving path of the first slider 321 along the first direction X, the air inlets of the multiple first valve units 331 and the multiple second valve units 332 are all connected to the air source 1, the inflation port of a first valve unit 331 is connected to a first air bag 21, and any two first valve units 331 are independent of each other and do not affect each other, so that each first valve unit 331 can independently control the connection and disconnection between the control air source 1 and each corresponding first air bag 21; the inflation port of a second valve unit 332 is connected to a second air bag 21, and any two second valve units 332 are independent of each other and do not affect each other, so that each second valve unit 332 can independently control the connection and disconnection between the control air source 1 and each corresponding second air bag 21.

[0050] In other preferred embodiments, in order to further reduce the volume of the fluid switching device 3 in the pneumatic comfort system 1000, the valve unit 33 is distributed on opposite sides of the moving path of the first slider 321, that is, the first valve unit 331 and the second valve unit 332 are distributed on opposite sides of the moving path of the first slider 321.

[0051] Specifically, the first valve unit 331 is arranged on the left side of the moving path of the first slider 321, and the second valve unit 332 is arranged on the right side of the moving path of the first slider 321, or the first valve unit 331 is arranged on the right side of the moving path of the first slider 321, and the second valve unit 332 is arranged on the left side of the moving path of the first slider 321. For the convenience of description, this embodiment is combined with the situation that the first valve unit 331 is arranged on the left side of the moving path of the first slider 321 and the second valve unit 332 is arranged on the right side of the moving path of the first slider 321. Figures 6 to 9 , for explanation.

[0052] like Figure 6 As shown, a plurality of first valve units 331 are arranged side by side along the first direction X on the left side of the moving path of the first slider 321, and a plurality of second valve units 332 are arranged side by side along the first direction on the right side of the moving path of the first slider 321, and the air inlets of the plurality of first valve units 331 and the plurality of second valve units 332 are all connected to the air source 1, and the inflation port of a first valve unit 331 is connected to a first air bag 21, and any two first valve units 331 are independent of each other and do not affect each other, so that each first valve unit 331 can independently control the connection and disconnection between the control air source 1 and each corresponding first air bag 21; the inflation port of a second valve unit 332 is connected to a second air bag 21, and any two second valve units 332 are independent of each other and do not affect each other, so that each second valve unit 332 can independently control the connection and disconnection between the control air source 1 and each corresponding second air bag 21.

[0053] It should be noted that for the convenience of description, the direction perpendicular to the first direction X and the second direction Y is designated as the third direction Z.

[0054] The working principle of the plurality of second valve units 332 is briefly described here. The plurality of second valve units 332 are arranged side by side along the first direction X. The actuator 31 is located between the plurality of first valve units 331 and the plurality of second valve units 332 along the third direction Z. The air inlets of the plurality of second valve units 332 are all connected to the air source 1, and the inflation port of a second valve unit 332 is connected to a second air bag 22. The actuator 31 is also used to drive the second slider 322 to reciprocate along the first direction X. When the second slider 322 abuts against a second valve unit 332, the second slider 322 actuates the second valve unit 332 to enter an inflation state. When the second slider 322 is separated from the second valve unit 332, the second valve unit 332 enters a deflated state. The first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0055] In some preferred embodiments, when the second air bag 22, the second valve unit 332 and the second slider 322 are added, the massage modes of the pneumatic comfort system 1000 can be enriched by changing the distribution positions of the first air bag 21 and the second air bag 22, or changing the arrangement positions of the first valve unit 331 and the second valve unit 332, as follows:

[0056] In some preferred embodiments, the valve units 33 are staggered on opposite sides of the moving path of the first slider 321, that is, the first valve unit 331 and the second valve unit 332 are staggered on both sides of the moving path of the first slider 321, so that the pneumatic comfort system 1000 has the following mode.

[0057] Catwalk mode:

[0058] Specifically, Figure 6 As shown, a plurality of first air bags 21 and a plurality of second air bags 22 are arranged side by side and symmetrically along the central axis, each first air bag 21 is independently connected to each first valve unit 33, each second air bag 22 is independently connected to each second valve unit 332, along the third direction Z, the first valve unit 33 and the second valve unit 332 are staggered, and the first slider 321 and the second slider 322 are symmetrically arranged side by side. When the actuator 31 drives the first slider 321 and the second slider 322 to move synchronously along the first direction X, the first slider 321 abuts against the first valve unit 331, the first valve unit 331 is in an inflated state, and the first air bag 21 connected to the first valve unit 331 is inflated. As the actuator 31 drives the first slider 321 and the second slider 322 to move along the first direction X, the first slider 321 is separated from the first valve unit 331, the first valve unit 331 is switched from an inflated state to a deflated state, and the first air bag 21 connected to the first valve unit 331 is deflated. Then the second slider 322 abuts against the second valve unit 332. At this time, the first slider 321 is in an inflated state. 21 is located between the two first valve units 331, the second valve unit 332 is in an inflated state, and the second air bag 22 connected to the second valve unit 332 is inflated. As the actuator 31 drives the first slider 321 and the second slider 322 to move along the first direction X, the second slider 322 disengages from the second valve unit 332, and the second valve unit 332 switches from an inflated state to a deflated state, and the second air bag 22 connected to the second valve unit 332 is deflated. According to the above working logic, as the actuator 31 moves along the first direction X, the multiple second air bags 22 and the multiple first air bags 21 in the first direction X are in an inflated state and a deflated state respectively.

[0059] Or, if Figure 7As shown, when the actuator 31 drives the second slider 322 and the first slider 321 to move synchronously along the first direction X, the second slider 322 abuts against the second valve unit 332, the second valve unit 332 is in an inflated state, and the second air bag 22 connected to the second valve unit 332 is inflated. As the actuator 31 drives the second slider 322 and the first slider 321 to move along the first direction X, the second slider 322 is separated from the second valve unit 332, the second valve unit 332 is switched from an inflated state to a deflated state, and the second air bag 22 connected to the second valve unit 332 is deflated; then the first slider 321 abuts against the first valve unit 331, at this time The second slider 322 is located between the two second valve units 332, the first valve unit 331 is in an inflated state, and the first bag connected to the first valve unit 331 is inflated. As the actuator 31 drives the second slider 322 and the first slider 321 to move along the first direction X, the first slider 321 is separated from the first valve unit 331, and the first valve unit 331 is switched from an inflated state to a deflated state, and the first air bag 21 connected to the first valve unit 331 is deflated. According to the above working logic, as the actuator 31 moves along the first direction X, the multiple second air bags 22 and the multiple first air bags 21 in the first direction X are in the inflated and deflated states in turn.

[0060] In other preferred embodiments, the valve units 33 are symmetrically arranged on opposite sides of the moving path of the first slider 321, that is, the first valve unit 331 and the second valve unit 332 are symmetrically arranged, and the first slider 321 and the second slider 322 are matched so that the pneumatic comfort system 1000 has the following working mode.

[0061] Catwalk mode:

[0062] In some preferred embodiments, Figure 8As shown, a plurality of first air bags 21 and a plurality of second air bags 22 are arranged side by side and symmetrically along the central axis, each first air bag 21 is independently connected to each first valve unit 331, each second air bag 22 is independently connected to each second valve unit 332, and along the third direction Z, the first valve unit 331 and the second valve unit 332 are arranged side by side in a one-to-one correspondence, the first slider 321 and the second slider 322 are staggered, and the staggered distance between the first slider 321 and the second slider 322 along the first direction X is half of the spacing between two adjacent first valve units 331. When the actuator 31 drives the first slider 321 and the second slider 322 to move synchronously along the first direction X, the first slider 321 abuts against the first valve unit 331 which is in the first position in the first direction X, the first valve unit 331 is in an inflated state, and the first air bag 21 connected to the first valve unit 331 is inflated. As the actuator 31 drives the first slider 321 and the second slider 322 to move synchronously along the first direction X, the first slider 321 disengages from the first valve unit 331, the first valve unit 331 is in a deflated state, and the first air bag 21 connected to the first valve unit 331 is inflated. The bag 21 is deflated, and then the second slider 322 abuts against the second valve unit 332 which is in the first position along the first direction X. At this time, the first slider 321 is located between the two first valve units 331, and the second valve unit 332 is in an inflated state. The second air bag 22 connected to the second valve unit 332 is inflated. As the actuator 31 drives the second slider 322 and the first slider 321 to move along the first direction X, the second slider 322 is separated from the second valve unit 332, and the second valve unit 332 is in a deflated state. The second air bag 22 connected to the second valve unit 332 is deflated. According to the above working logic, as the actuator 31 moves along the first direction X, the multiple second air bags 22 and the multiple first air bags 21 in the first direction X are in an inflated state and a deflated state in turn.

[0063] Wave Mode:

[0064] In some embodiments, Fig. 9As shown, along the third direction Z, the first valve unit 331 and the second valve unit 332 are arranged side by side in a one-to-one correspondence, and the first slider 321 and the second slider 322 are arranged side by side. When the actuator 31 drives the first slider 321 and the second slider 322 to move along the first direction X, the first slider 321 abuts against the first valve unit 331 which is in the first position along the first direction X, and the first valve unit 331 is in an inflated state, and the first air bag 21 connected to the first valve unit 331 is inflated, and synchronously, the second slider 322 abuts against the second valve unit 332 which is in the first position along the first direction X, and the second valve unit 332 is in an inflated state, and the second air bag 22 connected to the second valve unit 332 is inflated; as the actuator 31 drives the first slider 321 and the second slider 3 When the actuator 31 continues to move along the first direction X, the first slider 321 is separated from the first valve unit 331, the first valve unit 331 is in a deflated state, and the first air bag 21 connected to the first valve unit 331 is deflated, and synchronously, the second slider 322 is separated from the second valve unit 332, the second valve unit 332 is in a deflated state, and the second air bag 22 connected to the second valve unit 332 is deflated; according to the above working logic, as the actuator 31 moves along the first direction X, the multiple first air bags 21 and the multiple second air bags 22 in the first direction X are in an inflated state and a deflated state respectively.

[0065] It should be noted that when the first valve unit 331 and the second valve unit 332 are staggered, the first slider 321 and the second slider 322 can also be staggered in the same manner, so that the pneumatic comfort system 1000 presents a wave pattern. However, this structure has a relatively high manufacturing cost and is not described in detail here.

[0066] It can be understood that the distance between two adjacent first valve units 331 in each first valve unit 331 in the above-mentioned wave mode needs to be set according to the actual massage design, and the wave mode formed by different distances has different user experience, either rapid or soothing, and the embodiments of the utility model will not illustrate them one by one; similarly, the distance between two adjacent second valve units 332 in each second valve unit 332 needs to be set according to the actual massage design, and the wave mode formed by different distances has different user experience, either rapid or soothing, and the embodiments of the utility model will not illustrate them one by one.

[0067] It is worth noting that in some preferred embodiments, the above-mentioned cat-step mode and wave mode can be realized by adding multiple new air bags 2 and fluid switching devices 3, independently controlling each group of multiple air bags 2 by each fluid switching device 3, and matching the starting sequence and starting interval time of the corresponding actuator 31 in each fluid switching device 3. The specific driving modes will not be illustrated one by one in this embodiment.

[0068] For the actuator 31 mentioned above, see Fig.10 The actuator 31 includes a motor 311 and a screw rod 312. The first slider 321 and the second slider 322 are both screwed to the screw rod 312. The motor 311 is connected to the screw rod 312, that is, the screw rod 312 is fixed to the output end of the motor 311. When the motor 311 drives the screw rod 312 to rotate, the screw rod 312 drives the first slider 321 and the second slider 322 to reciprocate along the first direction X.

[0069] In some other embodiments, the actuator 31 may also be an electric push rod or other device that can push the slider to move.

[0070] In some preferred embodiments, Fig.11 As shown, the screw rod 312 includes a first half section 3121 and a second half section 3122, the first half section 3121 and the second half section 3122 have opposite thread directions, the first slider 321 is located in the first half section 3121, that is, the first slider 321 is screwed to the first half section 3121, and the second slider 322 is located in the second half section 3122, that is, the second slider 322 is screwed to the second half section 3122. It can be understood that by controlling the forward and reverse rotation of the motor 311, the first slider 321 and the second slider 322 screwed on the screw rod 312 can be controlled to move toward or away from each other, so that when the screw rod rotates, the movement directions of the first slider and the second slider are opposite, as follows:

[0071] When the motor 311 drives the screw rod 312 to rotate forward, the screw rod 312 drives the first slider 321 and the second slider 322 to move toward each other; when the motor 311 drives the screw rod 312 to rotate reversely, the screw rod 312 drives the first slider 321 and the second slider 322 to move relative to each other, thereby realizing multi-zone synchronous control of the pneumatic comfort system 1000.

[0072] In some embodiments, Fig.12 As shown, the fluid switching device 3 is provided with a first air inlet channel 35, which is connected to the air source 1; and the first air inlet channel 35 is connected to the air inlets of multiple first valve units 331, that is, the air inlets of multiple first valve units 331 are connected to the air source 1 through the first air inlet channel 35, thereby simplifying the air path layout inside the fluid switching device 3.

[0073] For each of the first valve units 331 described above, see Fig.12 and Fig.13 The first valve unit 331 is provided with a first shunt channel 3311 and a first valve core assembly 3312. The first air inlet channel 35 is communicated with the first shunt channel 3311. The first valve core assembly 3312 is movably arranged in the first shunt channel 3311. The first valve core assembly 3312 can reciprocate along the second direction Y. The first slider 321 is used to drive the first valve core assembly 3312 to move.

[0074] Among them, when the first valve core assembly 3312 is located at the preset first position, the first diverter airway 3311 is connected to the first air inlet channel 35, and the first valve unit 331 is in an inflated state. When the first valve core assembly 3312 is located at the preset second position, the first diverter airway 3311 is cut off from the first air inlet channel 35, and the first valve unit 331 is in a deflated state.

[0075] In some preferred embodiments, the first valve unit 331 further includes a first inflation port 3313 and a first deflation port 3314, both of which are communicated with the first diversion channel 3311, and the first inflation port 3313 is connected to the first air bag 21;

[0076] When the first valve core component 3312 is located at the preset first position, the first valve core component 3312 blocks the first air leakage port 3314, and the first air charging port 3313 is communicated with the first air inlet channel 35 through the first diversion channel 3311;

[0077] When the first valve core assembly 3312 is located at the preset second position, the first valve core assembly 3312 cuts off the first diversion channel 3311 and the first air inlet channel 35 , and the first valve core assembly 3312 opens the first air release port 3314 , and the first inflation port 3313 and the first air release port 3314 are connected through the first diversion channel 3311 .

[0078] Specifically, for the first branch channel 3311 and the first valve core assembly 3312, please refer to Fig.12 and Fig.13 The first shunt channel 3311 includes a first sub-channel 33111, a second sub-channel 33112 and a first switching valve port 33113. The first sub-channel 33111 is connected to the first air inlet channel 35. The first sub-channel 33111 and the second sub-channel 33112 are connected through the first switching valve port 33113. The first charging port 3313 and the first deflation port 3314 are both connected to the second sub-channel 33112. The first valve core component 3312 is disposed in the first shunt channel 3311, and the first valve core component 3312 can reciprocate along the second direction Y in the first shunt channel 3311. When the first valve core assembly 3312 is located at the first position, the first valve core assembly 3312 opens the first switching valve port 33113 and blocks the first air leakage port 3314, the first inflation port 3313 is connected to the first air inlet channel 35 through the first diversion channel 3311, and the first valve unit 331 is in an inflation state; when the first valve core assembly 3312 is located at the preset second position, the valve core assembly blocks the first switching valve port 33113, the first inflation port 3313 is connected to the first air leakage port 3314 through the second sub-channel 33112, and the first valve unit 331 is in a deflated state.

[0079] In some embodiments, see Fig.13The first valve unit 331 also includes a first actuator 3315, which is arranged at one end of the top of the first valve core assembly 3312 along the second direction Y; the first slider 321 is used to abut the first actuator 3315 so that the first actuator 3315 drives the first valve core assembly 3312 to move.

[0080] It can be understood that the first actuator 3315 is a ball or a first actuator 3315 with an arc top surface. The ball or the first actuator 3315 with an arc top surface makes the first slider 321 move more smoothly along the first direction X due to the existence of the arc surface.

[0081] It is understandable that the first valve unit 331 and the second valve unit 332 may be two types of devices with the same structure or two types of devices with different structures, so that the massage modes of the pneumatic comfort system 1000 are sufficiently rich.

[0082] It is worth noting that the number of the plurality of valve units includes but is not limited to 4, 5, 8 or 10, etc. Further, the number of the first valve unit 331 and the second valve unit 332 also includes but is not limited to 4, 5, 8 or 10, etc. respectively.

[0083] In order to reduce manufacturing costs and simplify the structure of the pneumatic comfort system 1000, in some preferred embodiments, the second valve unit 332 has the same structure as the first valve unit 331, the second valve unit 332 is provided with a second diverter channel and a second valve core assembly, the second air intake channel is connected to the second diverter channel, the second valve core assembly is movably arranged in the second diverter air channel, the second valve core assembly can reciprocate along the second direction Y, and the second slider 322 is used to drive the second valve core assembly to move; wherein, when the second valve core assembly is located at a preset third position, the second diverter air channel is connected to the second air intake channel, and the second gas distribution assembly is in an inflated state, and when the second valve core assembly is located at a preset fourth position, the second diverter air channel is cut off from the second air intake channel, and the second valve unit 332 is in a deflated state.

[0084] Specifically, for the above-mentioned second diverter channel and second valve core assembly, the second diverter channel includes a third sub-channel, a fourth sub-channel and a second switching valve port, the third sub-channel is connected to the second air inlet channel, the third sub-channel and the fourth sub-channel are connected through the second switching valve port, the second inflation port and the second air release port are both connected to the fourth sub-channel, the second valve core assembly is arranged in the second diverter channel, and the second valve core assembly can reciprocate along the first direction X in the second diverter channel, when the second valve core assembly is located at the third position, the second valve core assembly opens the second switching valve port, and blocks the second air release port, the second inflation port is connected to the air inlet channel through the second diverter channel, the second valve unit 332 is in an inflation state, when the second valve core assembly is located at the preset fourth position, the second valve core assembly blocks the second switching valve port, the second inflation port is connected to the second air release port through the fourth sub-channel, and the first valve unit is in a deflated state.

[0085] In some embodiments, the second valve unit 332 further includes a second actuator, which is disposed at one end of the second valve core assembly; the second slider 322 is used to abut against the second actuator so that the second actuator drives the second valve core assembly to move.

[0086] It can be understood that the second actuating member is a ball or a second actuating member with an arc top surface. The ball or the second actuating member with an arc top surface makes the second slider 322 move more smoothly along the first direction X due to the existence of the arc surface.

[0087] In some embodiments, the pneumatic comfort system 1000 also includes a control mechanism, which is electrically connected to the air source mechanism, and the control mechanism is also electrically connected to the fluid switching device. The control component is used to control the air source and the fluid switching device, specifically, including but not limited to controlling the start and stop of the air source, and controlling the working time, rotation direction, etc. of the fluid switching device.

[0088] In an embodiment of the utility model, the pneumatic comfort system 1000 includes a plurality of air bags 2, an air source 1, a fluid switching device 3 and a control mechanism, wherein the plurality of air bags 2 are connected to the air source 1 via the fluid switching device 3, the air source 1 is used to provide an inflation source of internal gas for the plurality of air bags 2, the fluid switching device 3 is used to control the connection or disconnection between the air source and the plurality of air bags 2, so that the plurality of air bags 2 present different states, and the fluid switching device 3 is used to realize multi-mode switching of the different states of the plurality of air bags 2, and the air source 1 and the actuator 31 are both electrically connected to the control mechanism, so that the control component is used to realize the switching of the mode of the fluid switching device 3 by the actuator 31. The utility model changes the way of controlling the connection status between the air source 1 and the multiple air bags 2 in the pneumatic comfort system 1000. The control is no longer based on the solenoid valve. Instead, the control is performed by mechanically controlling the fluid switching device 3 using a control component. This greatly reduces the manufacturing cost of the pneumatic comfort system 1000 and saves the installation space required for the entire pneumatic comfort system 1000. In addition, the pneumatic comfort system 1000 does not have the impact noise generated by the working state of multiple solenoid valves and the large amount of heat generated by the electronic components of the solenoid valves working for a long time. The pneumatic comfort system 1000 of the utility model is quieter and has a lower temperature.

[0089] The utility model also provides a seat embodiment, the seat comprises a chair body and the above-mentioned pneumatic comfort system 1000, and the pneumatic comfort system 1000 is arranged on the chair body. For the structure and function of the pneumatic comfort system 1000, please refer to the above-mentioned embodiment, and the embodiments of the utility model are not introduced one by one.

[0090] It should be noted that the preferred embodiments of the utility model are given in the specification and drawings of the utility model, but the utility model can be implemented in many different forms and is not limited to the embodiments described in the specification. These embodiments are not used as additional restrictions on the content of the utility model. The purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. In addition, the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all regarded as the scope of the description of the utility model; further, for ordinary technicians in this field, they can be improved or transformed according to the above description, and all these improvements and transformations should belong to the scope of protection of the claims attached to the utility model.

Claims

1. A pneumatic comfort system, characterized in that: include: An air source, a fluid switching device and a plurality of air bags, wherein the fluid switching device comprises an actuator, a transmission mechanism and a valve unit connected to the plurality of air bags in a one-to-one correspondence, wherein the air bags are connected to the air source and the external environment through the valve unit, and when the actuator actuates the valve unit through the transmission mechanism, the valve unit switches from a deflated state for deflating the air bags to an inflated state for inflating the air bags, and then switches to the deflated state; the actuator actuates the plurality of valve units in sequence to control the plurality of air bags to alternately complete inflation and deflation in sequence.

2. The pneumatic comfort system according to claim 1, characterized in that: The transmission mechanism includes a first slider, and the actuator is connected to the first slider. The actuator is used to drive the first slider to reciprocate along a preset direction. When the first slider abuts against an actuator in any valve unit, the first slider actuates the valve unit to enter an inflated state. When the first slider is misaligned with the actuator, the actuator causes the valve unit in which it is located to be in a deflated state.

3. The pneumatic comfort system according to claim 2, characterized in that: The valve units are arranged side by side on the same side of the moving path of the first slider.

4. The pneumatic comfort system according to claim 2, characterized in that: The valve units are distributed on two opposite sides of the moving path of the first sliding block.

5. The pneumatic comfort system according to claim 4, characterized in that: The valve units are staggered on opposite sides of the moving path of the first sliding block.

6. The pneumatic comfort system according to claim 4, characterized in that: The valve units are symmetrically arranged on opposite sides of the moving path of the first sliding block.

7. The pneumatic comfort system according to any one of claims 2 to 6, characterized in that: The actuator comprises a motor and a screw rod, and the first sliding block is screwed to the screw rod.

8. The pneumatic comfort system according to claim 7, characterized in that: It also includes a second slider, the screw rod has a first half section and a second half section with opposite threads, the first slider is located in the first half section, and the second slider is located in the second half section, so that when the screw rod rotates, the first slider and the second slider move in opposite directions.

9. The pneumatic comfort system according to claim 8, characterized in that: The number of the valve units is 4, 5, 8 or 10.

10. A chair, comprising a chair body and the pneumatic comfort system according to any one of claims 1 to 9.

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