Waist support supporting system and seat

Abstract

The utility model relates to the technical field of pneumatic waist supports, in particular to a waist support supporting system and a seat, the waist support supporting system comprises a first waist support air bag, a plurality of second waist support air bags, an air source, an air distribution device, a pressure sensor and a controller, and the first waist support air bag and the plurality of second waist support air bags are connected with the air source through the air distribution device. And the controller is in communication connection with the gas distribution device and the pressure sensor. By means of the mode, when the sitting posture of the human body changes, the pressure sensor can obtain the air pressure value change trend of the first waist supporting air bag by detecting the pressure of the first waist supporting air bag, then the air pressure value change trend is fed back to the controller, the air distribution device and the air source are controlled, and the inflation height of all the waist supporting air bags is adjusted; therefore, the inflation heights of all the waist support air bags change along with the movement change of the human body, personalized support adjustment and dynamic support adaptability are achieved, the system relates is simplified, and the waist support effect which is more comfortable, stable, high in adaptability and low in cost is provided.

Description

Technical Field

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

[0002] Intelligent seats have become a hot research area in the automotive and furniture industries. Equipped with various sensors and control systems, intelligent seats can achieve a variety of intelligent functions such as automatic adjustment, automatic massage, and automatic temperature control. Among them, lumbar support follow-up is an important research direction for intelligent seats and is particularly valued by the automotive and furniture industries. Lumbar support follow-up means that the seat can intelligently adapt to different sitting postures of the human body, and by adjusting the height of the lumbar support airbag, fill the gap between the human waist and the chair back, thereby automatically fitting and supporting the human waist.

[0003] At present, smart seats with lumbar support tracking function all rely on the detection data of multiple sensors to identify human posture, and adjust the height of each lumbar support air bag according to the currently identified human posture. For example, the pressure sensor set in each lumbar support air bag or at the air inlet of the lumbar support air bag detects the air pressure value of each lumbar support air bag and the capacitive / piezoresistive pressure pad set in the seat cushion detects the pressure distribution of the human buttocks on the seat cushion, and combines the above detection data to identify the human posture, and then adjust the height of each lumbar support air bag to adapt to different sitting postures of the human body. Although the detection data of multiple sensors can more accurately identify human posture, the price of sensors is generally expensive, which will greatly increase the cost of smart seats. Utility Model Content

[0004] The main technical problem solved by the embodiments of the utility model is to provide a lumbar support system and a seat, which can overcome the above problems or at least partially solve the above problems.

[0005] In order to solve the above technical problems, a technical solution adopted in an embodiment of the utility model is: to provide a lumbar support system, including a first lumbar support air bag, a plurality of second lumbar support air bags, an air source, a gas distribution device, a pressure sensor and a controller, the first lumbar support air bag and the plurality of second lumbar support air bags are connected to the air source through the gas distribution device, the gas distribution device controls the first lumbar support air bag and the plurality of second lumbar support air bags to enter an inflated, maintained or deflated state, the pressure sensor is used to monitor the air pressure value of the first air bag; the controller is communicatively connected with the gas distribution device and the pressure sensor, and can control the gas distribution device to adjust the inflation height of the first lumbar support air bag and the inflation height of the plurality of second lumbar support air bags according to the change of the air pressure value of the first lumbar support air bag monitored by the pressure sensor, so that the first lumbar support air bag and the second lumbar support air bag can maintain close support with human body movements.

[0006] Optionally, the pressure sensor is arranged on the first lumbar support airbag.

[0007] Optionally, the pressure sensor is arranged on the connecting air path between the first waist support air bag and the gas distribution device.

[0008] Optionally, a plurality of second lumbar support air bags are arranged in sequence and partially overlap in the first direction.

[0009] Optionally, the first waist support air bag is arranged in the middle of a plurality of second waist support air bags stacked in sequence, and the first waist support air bag partially overlaps with adjacent second waist support air bags.

[0010] Optionally, the first lumbar support airbag and the plurality of second lumbar support airbags are arranged in sequence and partially overlap in the first direction.

[0011] Optionally, the gas distribution device has a plurality of gas valves, and the plurality of gas valves are respectively connected to the first waist support air bag and a plurality of second waist support air bags in a one-to-one correspondence.

[0012] Optionally, the gas source includes an air pump, and the air pump is connected to the first waist support air bag and a plurality of second waist support air bags through the gas distribution device.

[0013] Optionally, the gas distribution device includes an integrated gas valve and an air pump.

[0014] In order to solve the above technical problems, another technical solution adopted by the embodiment of the utility model is: to provide a seat, wherein the seat is provided with a lumbar support system as described in any one of the above items.

[0015] The beneficial effects of the embodiments of the utility model are as follows: different from the prior art, the embodiments of the utility model provide a lumbar support system, which includes a first lumbar support air bag, a plurality of second lumbar support air bags, a gas source, a gas distribution device, a pressure sensor and a controller; the first lumbar support air bag and the plurality of second lumbar support air bags are connected to the gas source through the gas distribution device; the gas distribution device controls the first lumbar support air bag and the plurality of second lumbar support air bags to enter the inflation, holding or deflation device; the pressure sensor is used to monitor the air pressure value of the first lumbar support air bag; and the controller is communicatively connected with the gas distribution device and the pressure sensor. Based on the lumbar support system of the utility model, when the sitting posture of the human body changes, the pressure sensor can monitor and obtain the pressure change trend of the air pressure value by detecting the pressure of the first lumbar support air bag, and then feed back to the controller, so that the controller controls the gas distribution device and the gas source according to the pressure value change monitored by the pressure sensor, and then determines to control the inflation, maintenance or deflation state of the first lumbar support air bag and determines to control the inflation, maintenance or deflation state of several second lumbar support air bags, adjusts the gas volume of the first lumbar support air bag and several second lumbar support air bags, so that the inflation height of the first lumbar support air bag and several second lumbar support air bags changes to meet the support requirements of the human body's lumbar support due to changes in human body movements, controls the lumbar support system to adjust to the support mode that adapts to the sitting intention of the occupant, realizes the function of the lumbar support system to adjust the support mode in real time according to the occupant's movement intention, realizes personalized support adjustment and dynamic support adaptive design, and provides users with a more comfortable, stable and adaptable lumbar support effect with low cost.

[0016] The lumbar support system of the utility model only needs to be provided with a single pressure sensor for monitoring the first lumbar support air bag, without the need to provide multiple pressure sensors, so that the follow-up precise control of the lumbar support system can be achieved, which not only effectively reduces the system setting cost, but also effectively simplifies the control procedure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0018] Figure 1 The overall structure of the lumbar support system provided by the embodiment of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 2 The overall structure of the lumbar support system provided by the embodiment of the utility model is shown in FIG. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the use of the lumbar support system provided by the embodiment of the utility model. Figure 1 ;

[0021] Figure 4 This is a schematic diagram of the use of the lumbar support system provided by the embodiment of the utility model. Figure 2 ;

[0022] Figure 5 This is a schematic diagram of the use of the lumbar support system provided by the embodiment of the utility model. Figure 3 ;

[0023] Figure 6 It is a schematic diagram of the overall structure of a seat provided by an embodiment of the utility model.

[0024] Description of reference numerals:

[0025] 100 lumbar support system, 200 seat, 1 first lumbar support air bag, 2 second lumbar support air bag, 3 gas distribution device, 4 pressure sensor, 5 controller, 6 back support, 7 elastic pad. DETAILED DESCRIPTION

[0026] 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 another 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 another element or there can be one or more centered elements therebetween. The orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "vertical", "horizontal", etc. used in this specification is based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] 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.

[0028] See also Figures 1 to 5The utility model provides an embodiment of a lumbar support system 100, wherein the lumbar support system 100 comprises a first lumbar support air bag 1, a plurality of second lumbar support air bags 2, a gas source, a gas distribution device 3, a pressure sensor 4 and a controller 5. The first lumbar support air bag 1 and the plurality of second lumbar support air bags 2 are respectively connected to the gas source through the gas distribution device 3, the gas distribution device 3 controls the first lumbar support air bag 1 and the plurality of second lumbar support air bags 2 to enter an inflated, maintained or deflated state, the pressure sensor 4 monitors the air pressure value of the first lumbar support air bag 1, and the controller 5 is in communication connection with the gas source, the gas distribution device 3 and the pressure sensor 4.

[0029] For the above lumbar support system 100, see Figure 1 and Figure 2 The lumbar support system 100 can be arranged on the seat 200. In some embodiments, the seat 200 further includes a backrest bracket 6 and an elastic pad 7. The backrest bracket 6 is a plate-shaped support structure. The first lumbar support airbag 1 and the plurality of second lumbar support airbags 2 are fixed to the surface of the backrest bracket 6 by one or more of bonding, screwing, snapping, clamping or magnetic attraction, etc., and the pressure sensor 4 is connected to the interior of the chamber of the first lumbar support airbag 1 by one or more of bonding, snapping or clamping, etc., or the pressure sensor 4 is connected to the air path of the first lumbar support airbag 1 by one or more of bonding, snapping or clamping, etc., etc.

[0030] It is understandable that by setting the pressure sensor 4 to monitor the air pressure value of the first lumbar support airbag 1, the pressure sensor 4 and its line arrangement distribution and control program can be simplified, thereby reducing the overall cost of the lumbar support system 100. That is, compared with the traditional structure of configuring one airbag with one pressure sensor 4, the lumbar support system 100 of the utility model only uses one pressure sensor 4 to realize pressure detection, and then cooperates with the controller 5 to realize the control of multiple airbags, thereby effectively simplifying the pressure sensor 4 and its line arrangement distribution and control program. The elastic pad 7 includes but is not limited to being covered on the surface of the back support bracket 6 by one or more of bonding, screwing, clamping or clamping, and the first lumbar support airbag 1 and the plurality of second lumbar support airbags 2 are arranged between the elastic pad 7 and the back support bracket 6. The elastic pad 7 may be made of, but is not limited to, sponge or elastic rubber, and can provide flexible support for the seated person when sitting, and can be used to generate elastic deformation to adapt to the volume changes of the first lumbar support airbag 1 and the plurality of second lumbar support airbags 2. When inflated, the first lumbar support airbag 1 and the second lumbar support airbag 2 prop up the elastic pad 7, causing the elastic pad 7 to bulge in a direction away from the backrest bracket 6.

[0031] The arrangement of the plurality of second lumbar support airbags 2 on the backrest of the seat 200 conforms to the human back, that is, they are arranged in sequence along the lumbar line of the seated person, such as being arranged in sequence from top to bottom corresponding to the human back, that is, being arranged in sequence in the first direction. In some embodiments, the first lumbar support airbag 1 can of course be used as a support airbag with the same function as the second lumbar support airbag 2, or can be used only as an airbag for pressure monitoring; when the support airbag has the same function as the second lumbar support airbag 2, the first lumbar support airbag 1 and the plurality of second lumbar support airbags 2 are arranged in sequence in the first direction, and when inflated, they can cooperate with the plurality of second lumbar support airbags 2 to provide lumbar support and can be used as the air pressure monitoring object of the pressure sensor 4.

[0032] Furthermore, to ensure continuous support for the human back, a plurality of air bags arranged in sequence, such as a plurality of second lumbar support air bags 2 arranged in sequence in the first direction, or a first lumbar support air bag 1 and a plurality of second lumbar support air bags 2 arranged in sequence in the first direction, have a partial overlap between two adjacent air bags.

[0033] Considering that there are multiple second lumbar support airbags 2, there are multiple situations for the location of the first lumbar support airbag 1 based on the multiple second lumbar support airbags 2, as follows:

[0034] In some embodiments, a plurality of second waist support airbags 2 are partially overlapped in the first direction and arranged in sequence, and the first waist support airbag 1 is arranged in the middle of the plurality of second waist support airbags 2 stacked in sequence, wherein the first direction is the height direction of the backrest bracket 6. The first waist support airbag 1 has the same inflatable waist support function as the second waist support airbag 2, and can also be used as the air pressure monitoring object of the pressure sensor 4.

[0035] Alternatively, in other embodiments, the first waist support airbag 1 and the plurality of second waist support airbags 2 are arranged in sequence with partial overlap in the first direction, that is, the first waist support airbag 1 is arranged at the head or tail of the plurality of second waist support airbags 2 stacked in sequence, wherein the first direction is the height direction of the backrest bracket 6. The first waist support airbag 1 has the same inflatable waist support function as the second waist support airbag 2, and can also be used as the air pressure monitoring object of the pressure sensor 4.

[0036] Alternatively, in some other embodiments, the first waist support airbag 1 and the plurality of second waist support airbags 2 are separately arranged in the first direction, that is, the first waist support airbag 1 is arranged at intervals on the side or other positions of the plurality of second waist support airbags 2. In this case, the first waist support airbag 1 can only be used as an air pressure monitoring object of the pressure sensor 4, and is not used as an airbag with waist support function, and the first waist support airbag 1 is connected to a branch air path independently led out from the gas distribution device 3, and the first waist support airbag 1 can also be designed to be a non-waist support airbag shape structure different from the second waist support airbag 2.

[0037] For the above-mentioned lumbar support system 100, its operation process can be as follows: first, the pressure sensor 4 can monitor the air pressure value of the first lumbar support air bag 1 in real time; when the human body sits, the back is against the seat 200 and fits the first lumbar support air bag 1 and the plurality of second lumbar support air bags 2. Then, when the human body adjusts the sitting posture due to sitting posture requirements, sitting posture habits or long-term sitting, the air pressure value of the first lumbar support air bag 1 changes. At this time, the pressure sensor 4 detects the change of the air pressure value of the first lumbar support air bag 1 and feeds it back to the controller 5, so that the controller 5 obtains the change of the air pressure value, estimates the sitting intention of the occupant, and thus determines the need to inflate, maintain or deflate the first lumbar support air bag 1 and the plurality of second lumbar support air bags 2. Then, the gas distribution device 3 and the gas source are controlled to inflate, maintain or deflate the first lumbar support air bag 1 and the plurality of second lumbar support air bags 2 respectively, so that the first lumbar support air bag 1 and the plurality of second lumbar support air bags 2 form different support modes and adapt to different sitting postures of the human body, thereby realizing the follow-up function of the lumbar support system 100.

[0038] In order to facilitate further understanding of the positional relationship between the first waist support airbag 1 and the plurality of second waist support airbags 2 and their working control principle, as an example, please refer to Figures 3 to 5 The figure shows a lumbar support system including a first lumbar support airbag 1 and two second lumbar support airbags 2, wherein the first lumbar support airbag 1 and the two second lumbar support airbags 2 are sequentially arranged in a partially overlapping manner in a first direction. In the specific embodiment shown, the first lumbar support airbag 1 and the two second lumbar support airbags 2 are sequentially arranged from top to bottom along the first direction.

[0039] The inflation height of the first waist support airbag 1 and the two second waist support airbags 2 can be adjusted respectively, so that each airbag can keep close support with the human body movement, so as to realize the follow-up function, specifically including: in the forward leaning mode, please refer to Figure 3 When the human body is leaning forward, the inflation height of the first waist support airbag 1 from top to bottom along the first direction is greater than the inflation height of the two second waist support airbags 2 in the middle and lower parts; in the backward mode, please refer to Figure 4 When the human body sits back, along the first direction from top to bottom, the inflation height of the first waist support air bag 1 is lower than the inflation height of the two second waist support air bags 2 in the middle and lower parts; in the sitting mode, please refer to Figure 5 When a human body sits still and the lumbar curve of the human body is substantially flush with the back support 6, the inflation heights of the first lumbar support airbag 1 and the two second lumbar support airbags 2 are substantially the same from top to bottom along the first direction.

[0040] That is, the support modes of the lumbar support system with the first lumbar support airbag 1 and the two second lumbar support airbags 2 may include mode 1, mode 2 and mode 3. Among them, mode 1 may correspond to a mode in which the seated person leans back, mode 2 may correspond to a mode in which the seated person sits still, and mode 3 may correspond to a mode in which the seated person leans forward. The lumbar support system may switch back and forth between these three modes, for example, from mode 1 to mode 2, from mode 2 to mode 3, from mode 3 to mode 2, from mode 2 to mode 1, and so on.

[0041] When the seated person leans back, the first lumbar support airbag 1 is pressed to increase its air pressure value. The pressure sensor 4 detects the increase in air pressure value and estimates that the seated person intends to lean back, and controls the lumbar support system to enter the first support mode (i.e., mode 1). Figure 4 As shown, the first waist support air bag 1 is controlled to be deflated to lower the inflation height of the first waist support air bag 2 , and the two second waist support air bags 2 are controlled to be inflated to raise the inflation heights of the two second waist support air bags 2 .

[0042] When the seated person leans forward, the seated person releases the pressing contact with the first lumbar support airbag 1, causing the air pressure value to drop. The pressure sensor 4 detects the drop in air pressure value, and then estimates that the seated person intends to lean forward, and controls the lumbar support system to enter the third support mode (i.e., mode 3). Figure 3 As shown, the inflation height of the first waist support air bag 2 is increased by controlling the inflation of the first waist support air bag 1 , and the inflation height of the two second waist support air bags 2 is increased by controlling the deflation of the two second waist support air bags 2 .

[0043] When the seated person is in a sitting position, the seated person's pressing state on the first lumbar support air bag 1 remains basically unchanged, so that its air pressure value remains unchanged. The pressure sensor 4 detects that the air pressure value has not changed, and then estimates that the seated person's sitting intention is to sit quietly, and controls the lumbar support system to enter the second support mode (i.e., mode 2). Specifically, Figure 5 As shown, the first lumbar support airbag 1 and the two second lumbar support airbags 2 are adjusted to be in a pressure-maintaining state and to maintain substantially the same inflation height. Specifically, based on the supporting action of the lumbar support system with the first lumbar support airbag 1 and the two second lumbar support airbags 2 in accordance with the sitting intention of the seated person, the specific control method is as follows:

[0044] After the lumbar support system is powered on, the signal switches to an initialization signal. First, the first lumbar support air bag 1 and the two second lumbar support air bags 2 are simultaneously deflated for a set time (e.g., 15 seconds) to make them deflated to a substantially similar deflated state; then the first lumbar support air bag 1 and the two second lumbar support air bags 2 are simultaneously inflated, wherein the pressure sensor 4 monitors the inflation of the first lumbar support air bag 1 to a set air pressure value (e.g., 150 Hpa), so that the first lumbar support air bag 1 and the two second lumbar support air bags 2 are inflated to a substantially similar height, and then wait for 2 seconds to ensure that the air pressure value of the first lumbar support air bag 1 is stable during the waiting time, reaching the initial mode state, and then enter the execution of the follow-up function.

[0045] Before entering the follow-up function, the initial mode corresponding to the lumbar support system can be mode 2, such as Figure 5 As shown, in mode 2, the first waist support airbag 1 and the two second waist support airbags 2 maintain the same inflation height. When the follow-up signal is received, the air pressure value filtering is performed. The air pressure value filtering can smooth and stabilize the air pressure signal, reduce possible noise and interference, and provide more accurate and reliable air pressure feedback, ensuring that the air pressure data provided to the system has a certain degree of continuity and stability.

[0046] Next, it is determined whether the first waist support air bag 1 and the two second waist support air bags 2 are being inflated, and whether the first waist support air bag 1 and the two second waist support air bags 2 are being deflated. If yes, the three waist support air bags are kept in their respective states. If no, it is determined whether the pressure value changes. The determination of whether the first waist support air bag 1 is in an inflated or deflated state can be achieved by monitoring the working state of the air valve of the gas distribution device 3 that is connected to the first waist support air bag 1. The determination of whether the two second waist support air bags 2 are in an inflated or deflated state can be achieved by monitoring the working state of the air valves of the gas distribution device 3 that are connected to the second waist support air bags 2 respectively.

[0047] Specifically, it is to determine whether the air pressure value of the first lumbar support air bag 1 changes within a preset time. The pressure sensor 4 can be used to detect whether the air pressure value of the first lumbar support air bag 1 changes within a preset time. The preset time can be 0.1s, 0.2s, 0.5s, 1s or 2s.

[0048] If the air pressure value of the first waist support air bag 1 does not change or the range of change is within the preset range, the state of the three waist support air bags is maintained.

[0049] If the air pressure value of the first lumbar support airbag 1 changes, and the air pressure rise is detected and the number of times the air pressure rises is greater than or equal to the set number (such as 6 times in a row), the controller 5 algorithm estimates that the seated person intends to lean back, then the control signal corresponding to the first lumbar support airbag 1 is a deflation signal, and the control signals corresponding to the two second lumbar support airbags 2 can be inflation signals, and the controller 5 outputs a control signal of the reclining mode to the gas source and gas distribution device 3 to adjust the inflation height of the first lumbar support airbag 1 and the two second lumbar support airbags 2. If the number of times the air pressure value of the first lumbar support airbag 1 rises is less than the set number (such as not reaching 6 times in a row), the control signal corresponding to the first lumbar support airbag 1 can be a holding signal, and the two second lumbar support airbags 2 can also correspond to a holding signal, that is, the three lumbar support airbags maintain their original states.

[0050] If the air pressure value of the first lumbar support airbag 1 changes, and the air pressure drops and the number of air pressure drops detected is greater than or equal to the set number (such as 6 consecutive times), the controller 5 algorithm estimates that the seated person intends to sit forward, then the control signal corresponding to the first lumbar support airbag 1 is an inflation signal, and the control signals corresponding to the two second lumbar support airbags 2 can be deflation signals, and the controller 5 outputs a control signal of the forward tilt mode to the gas source and gas distribution device 3 to adjust the inflation height of the first lumbar support airbag 1 and the two second lumbar support airbags 2. If the number of air pressure drops of the first lumbar support airbag 1 is less than the set number (such as not reaching 6 consecutive times), the control signal corresponding to the first lumbar support airbag 1 can be a holding signal, and the two second lumbar support airbags 2 can also correspond to a holding signal, that is, the three lumbar support airbags maintain their original states.

[0051] According to the above, the inflation signal, deflation signal or holding signal corresponding to the first waist support airbag 1 and the two second waist support airbags 2 can be obtained. The first waist support airbag 1 and the two second waist support airbags 2 are respectively inflated, deflated or held to reach the inflation height to form a support mode of the waist support system.

[0052] Next, the lumbar support system is controlled to execute a corresponding support mode, that is, the first lumbar support airbag 1 and the two second lumbar support airbags 2 are controlled to reach the target inflation heights respectively.

[0053] First, the acquired instruction signal is confirmed to confirm the mode currently required to be executed.

[0054] The control signal instructions include a mode one signal instruction, a hold signal, and a mode two signal instruction, wherein the mode one signal instruction includes an instruction for controlling the first lumbar support air bag 1 to deflate and the two second lumbar support air bags 2 to inflate, the mode two signal instruction includes an instruction for controlling the first lumbar support air bag 1 to inflate and the two second lumbar support air bags 2 to deflate, and the hold signal includes an instruction for controlling the first lumbar support air bag 1 and the two second lumbar support air bags 2 to maintain pressure.

[0055] Then, during the execution, the state of the current support mode is judged to determine whether the current support mode of the lumbar support system is the support mode required to be completed by the control signal instruction.

[0056] Specifically, the state of the current support mode is mainly determined by monitoring the air pressure value of the first lumbar support airbag 1. When it is detected that the air pressure value of the first lumbar support airbag 1 reaches the air pressure value of the target inflation height, it is considered that the current support mode reaches the target support mode, and the first lumbar support airbag 1 and the two second lumbar support airbags 2 can be controlled to maintain the current inflation height. Otherwise, the corresponding support mode is executed.

[0057] Among them, during the adjustment process of mode 1 and mode 3. If mode 1 is executed, mode 1 is cumulatively executed, that is, the first waist support airbag 1 is controlled to be deflated, and the two second waist support airbags 2 are inflated, until the first waist support airbag 1 is deflated, and the two second waist support airbags 2 are inflated, and the air pressure of the first waist support airbag 1 remains stable. If mode 3 is executed, mode 3 is cumulatively executed, that is, the first waist support airbag 1 is inflated, and the two second waist support airbags 2 are deflated, until the first waist support airbag 1 is inflated, and the two second waist support airbags 2 are deflated, and the air pressure of the first waist support airbag 1 remains stable.

[0058] Specifically, in the process of executing the adjustment to complete the corresponding support mode, it also includes: continuously detecting the air pressure value of the first lumbar support air bag 1, and monitoring whether the air pressure value of the target inflation height is reached; if not, continuing to adjust the inflation height of the first lumbar support air bag 1 until the inflation height of the first lumbar support air bag 1 is maintained after the air pressure value of the target inflation height is reached; if so, adjusting the first lumbar support air bag 1 to maintain the current inflation height.

[0059] In addition, the inflation height adjustment of the two second lumbar support air bags 2 is controlled according to a set time, and the inflation height adjustment of the two second lumbar support air bags 2 is completed within the set adjustment time of the target inflation height.

[0060] After the corresponding support mode adjustment of mode 1 and mode 3 is completed, the air pressure of each lumbar support air bag is waited for to be stable within the waiting time, wherein the waiting monitoring is mainly realized by monitoring the air pressure of the first lumbar support air bag 1. After the waiting is completed, the mode holding can be entered, that is, the first lumbar support air bag 1 and the two second lumbar support air bags 2 are adjusted to maintain the current inflation height, and wait for the signal to proceed to the next step.

[0061] Wherein, after the air pressure of the first lumbar support airbag 1 remains stable for a period of time, it can be in a waiting state. When the set cycle time threshold is reached, the above lumbar support follow-up control method is executed again from the waiting state. The cycle time threshold can be 50ms, etc.

[0062] It is understandable that the above three human sitting postures are described based on the changes of the lumbar support system, which are only representative examples. The first lumbar support airbag 1 and the plurality of second lumbar support airbags 2 of the lumbar support system of the utility model include but are not limited to changes based on the above three human sitting postures. For example, it also includes that when the sitting posture of the human body is an irregular sitting posture, the first lumbar support airbag 1 and the plurality of second lumbar support airbags 2 are changed based on the irregular human sitting posture.

[0063] It can also be understood that the number of the second lumbar support airbags 2 of the lumbar support system in the present invention includes but is not limited to two. For example, the number of the second lumbar support airbags 2 is one, three, four or five. When the number of the second lumbar support airbags 2 is three, four or five, the changes based on the above three human body sitting postures can refer to the above embodiment when the number of the second lumbar support airbags 2 is two, and will not be repeated here.

[0064] Through the above-mentioned method, the lumbar support system in the utility model can have a variety of different support modes, and adapt to different sitting postures of the human body according to the sitting intention of the occupant, so that the lumbar support system can always support the human waist and improve the comfort of the human waist.

[0065] For the first waist support airbag 1 or the second waist support airbag 2, in some embodiments, the first waist support airbag 1 or the second waist support airbag 2 is formed by a single independent airbag, and the length of the independent airbag is less than or equal to the width of the back support bracket 6. In the above manner, the first waist support airbag 1 or the second waist support airbag 2 can have a sufficient length to cover and support the waist of the human body along the second direction, wherein the second direction is the width direction of the back support bracket 6, and the second direction is perpendicular to the first direction.

[0066] For the above-mentioned airbags, in other embodiments, the above-mentioned first lumbar support airbag 1 or the second lumbar support airbag 2 is formed by combining at least two independent airbags, and the sum of the lengths of the at least two independent airbags is less than or equal to the width of the back support bracket 6, that is, the first lumbar support airbag 1 or the second lumbar support airbag 2 includes at least two sub-airbags, and the at least two sub-airbags are sequentially arranged on the back support bracket 6 along the second direction.

[0067] It can be understood that, for the above-mentioned first lumbar support airbag 1 and the second lumbar support airbag 2, no matter they are composed of a single independent airbag or at least two independent airbags, the shapes of the independent airbags include but are not limited to one or more of circular, elliptical, square, arc or other irregular shapes.

[0068] Further, for the above gas sources, please refer to Figure 1 The gas source includes an air pump, and the air pump is connected to the first waist support air bag 1 and the plurality of second waist support air bags 2 through a gas distribution device 3.

[0069] Further, for the above-mentioned gas distribution device 3, please refer to Figure 1 The gas distribution device 3 has a plurality of gas valves, which are respectively connected to the first waist support air bag 1 and the plurality of second waist support air bags 2 in a one-to-one correspondence, and the plurality of gas valves are all connected to the controller 5 in communication to form a structure in which one air pump controls a plurality of air bags.

[0070] In some other embodiments, the gas distribution device 3 and the gas source can also be an integrated device with a pump and a valve, wherein the air pump serves as a gas supply unit, and the provided gas is distributed one-to-one to the first lumbar support air bag 1 and the plurality of second lumbar support air bags 2 through a plurality of integrated air valves.

[0071] Regarding the above-mentioned gas distribution device 3 and gas source, it can be understood that the gas distribution device 3 and the gas source can be arranged in the back support 6 or other structures except the back support 6.

[0072] Further, for the controller 5, in some embodiments, the controller 5 includes a memory and at least one processor, wherein the memory stores the waist support control program for controlling the operation of the first waist support airbag 1 and the plurality of second waist support airbags 2, and the at least one processor is capable of executing the waist support control program. The processor and the memory may be connected via a bus or other means, preferably via a bus.

[0073] An embodiment of the utility model provides a lumbar support system 100, comprising a first lumbar support air bag 1, a plurality of second lumbar support air bags 2, an air source, a gas distribution device 3, a pressure sensor 4 and a controller 5. The first lumbar support air bag 1 and the plurality of second lumbar support air bags 2 are connected to the air source via the gas distribution device 3. The gas distribution device 3 controls the first lumbar support air bag 1 and the plurality of second lumbar support air bags 2 to enter an inflated, maintained or deflated state. The pressure sensor 4 monitors the air pressure value of the first lumbar support air bag 1. The controller 5 is communicatively connected with the gas distribution device 3 and the pressure sensor 4. When performing follow-up lumbar support control, the pressure sensor 4 can detect the pressure of the first lumbar support airbag 1 and its changing trend, and then feed back to the controller 5, so that the controller 5 estimates the sitting intention of the seated person according to the pressure detected by the pressure sensor 4, controls the gas distribution device 3 and the gas source, and then determines to control the first lumbar support airbag 1 to enter the inflation, holding or deflation state and determines to control the second lumbar support airbags 2 to enter the inflation, holding or deflation state, adjusts the gas volume of the first lumbar support airbag 1 and the second lumbar support airbags 2 and changes the inflation height of the first lumbar support airbag 1 and the second lumbar support airbags 2, so that the first lumbar support airbag 1 and the second lumbar support airbags 2 follow the human body's movements and maintain a close support for the human waist, thereby realizing the follow-up function of the lumbar support system.

[0074] The present invention also provides an embodiment of a seat 200, which is not limited to a car seat, a massage seat or an office seat. Figure 6 The seat 200 is provided with the above-mentioned lumbar support system 100. The specific structure and function of the above-mentioned lumbar support system 100 can be referred to the above-mentioned embodiment, and will not be described in detail here.

[0075] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A lumbar support system, characterized in that: include: The first lumbar support airbag; Several secondary lumbar airbags; Gas source; A gas distribution device, wherein the first waist support air bag and the plurality of second waist support air bags are connected to the gas source through the gas distribution device, and the gas distribution device controls the first waist support air bag and the plurality of second waist support air bags to enter an inflated, maintained or deflated state; A pressure sensor, used for monitoring the air pressure value of the first waist support air bag; The controller is communicatively connected with the gas distribution device and the pressure sensor, and can control the gas distribution device to adjust the inflation height of the first lumbar support air bag and the inflation height of the plurality of second lumbar support air bags according to the change of the air pressure value of the first lumbar support air bag monitored by the pressure sensor, so that the first lumbar support air bag and the second lumbar support air bags maintain close support with human body movements.

2. The lumbar support system according to claim 1, characterized in that: The pressure sensor is arranged on the first waist support air bag.

3. The lumbar support system according to claim 1, characterized in that: The pressure sensor is arranged on the connecting gas path between the first waist support air bag and the gas distribution device.

4. The lumbar support system according to claim 1, characterized in that: The plurality of second waist support air bags are arranged sequentially and partially overlapped in the first direction.

5. The lumbar support system according to claim 4, characterized in that: The first waist support air bag is arranged in the middle of a plurality of second waist support air bags stacked in sequence, and the first waist support air bag partially overlaps with adjacent second waist support air bags.

6. The lumbar support system according to claim 1, characterized in that: The first waist support airbag and the plurality of second waist support airbags are arranged in sequence and partially overlap in the first direction.

7. The lumbar support system according to claim 1, characterized in that: The gas distribution device has a plurality of gas valves, and the plurality of gas valves are respectively connected to the first waist support air bag and a plurality of second waist support air bags in a one-to-one correspondence.

8. The lumbar support system according to claim 1, characterized in that: The gas source comprises an air pump, and the air pump is connected to the first waist support air bag and a plurality of second waist support air bags through the gas distribution device.

9. The lumbar support system according to claim 1, characterized in that: The gas distribution device comprises an integrated gas valve and an air pump.

10. A seat, characterized in that: A lumbar support system as described in any one of claims 1 to 9 is provided.

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