Control method of desk and chair integrated office table

Abstract

The invention provides a control method of a table and chair integrated office table. The control method comprises the following steps: monitoring whether a user is in a sedentariness state or not in real time; if the office table is in the sedentary state at present, a lifting table and a lifting chair of the office table are controlled to synchronously ascend by a first height H1 at a first speed V1, so that the sitting posture is switched into a half sitting posture; when the sitting posture is switched to the half sitting posture, judging whether the height of the user exceeds a preset standard height threshold value or not; if not, the lifting table and the lifting chair are controlled to synchronously ascend by a second height H2 at a second speed V2, and then the lifting table is controlled to continuously ascend by a third height H3 at a third speed V3, so that the user is switched from the half sitting posture to the standing posture; if yes, the lifting table and the lifting chair are controlled to synchronously ascend by a second height H2 at a second speed V2, then the lifting table is controlled to continuously ascend by a third height H3 at a third speed V3, and meanwhile, the display support is controlled to ascend by a fourth height H4 at a fourth speed V4, so that the user is switched from the half sitting posture to the standing posture; or, the lifting table and the lifting chair are controlled to synchronously ascend by a second height H2 at a second speed V2, and then the lifting table is controlled to continuously ascend by a fifth height H5 at a third speed V3, so that the user is switched from the half sitting posture to the standing posture.

Description

Technical Field

[0001] The present invention relates to the field of display stands, and particularly to a control method for a desk integrated with a table and chair. Background Art

[0002] In modern intelligent office scenarios, especially for knowledge workers who need to operate visual display terminals (VDTs) for a long time (such as programmers, designers, copywriters, etc.). More than 70% of the working hours of such people are spent sitting still, facing occupational health risks such as low back pain, cervical spondylosis, and varicose veins in the lower extremities.

[0003] In existing research, the intervention programs for sedentary problems are mainly divided into two categories: one is to cultivate employees' health awareness through education and guidance, such as using sedentary reminder tools or conducting health training to encourage employees to engage in physical activities during work breaks. The other is to provide support through environmental transformation, such as providing adjustable-height desks, which can reduce the sitting posture time on weekdays in the short and medium terms.

[0004] For example, the Chinese utility model patent CN215737626U discloses an automatic lifting table and chair for protecting eyesight, including a lifting table and a lifting chair. The lifting table includes an H-shaped base, a sleeve is welded above the H-shaped base, a sleeve column is inserted into each sleeve, a box body is welded at the upper end of the sleeve column, a table top is welded above the box body, a baffle is welded at the rear side above the table top, a hydraulic cylinder I is welded in the middle of the baffle, a piston of the hydraulic cylinder I is welded with a support cross bar, the other end of the support cross bar is welded with a reading board, and a lifting mechanism I is fixedly arranged between two sleeves on the same side of the H-shaped base. The lifting chair includes a circular base, a lifting mechanism II is fixedly arranged on the circular base, a seat cushion is welded above the lifting mechanism II, a backrest is fixedly arranged on one side of the seat cushion, and a correction device is bolted and fixed at the center of the outer side of the backrest. In the prior art, the method of adjusting the height of the table and chair is similar, and it is adjusted by the traditional pneumatic method.

[0005] Another example is the Chinese utility model patent CN203897754U, which discloses a combined lifting table and chair, including a box body, a driving mechanism symmetrically arranged in the box body for lifting the seat mechanism and the table top mechanism, and a supporting mechanism for supporting the footrest; a controller for controlling the lifting of the driving mechanism and the supporting mechanism is arranged at the rear of the box body; the driving mechanism controls the driving motor a through the controller to drive the connecting rod to drive the seat mechanism and the table top mechanism to move relatively, so as to form the rising and falling of the seat mechanism and the table top mechanism; the supporting mechanism controls the driving motor c through the controller to drive the supporting mechanism to complete automatic lifting; the push rod controls the driving motor b through the controller to drive the footrest to complete the lifting action.

[0006] It can be seen that most automatic lifting desks and chairs are mainly adjusted actively by users, enabling the desks and chairs to adjust their heights, etc. However, since the adjustment is initiated actively by users, people's attention is distracted. However, the difficulty in changing sedentary behavior lies in that it is difficult for users to truly develop healthy behavior habits. At the individual level, the need for work concentration conflicts with the interruption of sedentary behavior. Users are difficult to change their behavior due to concerns about affecting the current task. For example, users need to distract their attention from the current work task to manually control the height-adjustable desk or chair, and also manually control the specific height of the adjustment, thus interrupting the current work task. That is to say, the existing ordinary height-adjustable desks mainly still rely on users' independent adjustment. Summary of the Invention

[0007] The purpose of the present invention is to provide a control method for a desk with an integrated desk and chair, which partially solves or alleviates the above deficiencies in the prior art. By identifying whether the user is in a sedentary state, and when it is recognized that the user enters the sedentary state, the desk and the chair are automatically controlled to rise and fall synchronously, realizing passive change of the user's sitting posture. And on the one hand, the control gradually switches from the sitting posture to the semi-sitting posture, and then from the semi-sitting posture to the standing posture. On the other hand, by controlling the rising and falling speed of the desk and chair in stages, the user's work task is not interrupted as much as possible, or the risk of being interrupted is reduced.

[0008] To solve the above-mentioned technical problems, the present invention specifically adopts the following technical solutions:

[0009] The present invention provides a control method for a desk with an integrated desk and chair, which includes the steps of: real-time monitoring whether the user is currently in a sedentary state; if currently in a sedentary state, controlling the height-adjustable desk and the height-adjustable chair of the desk to rise synchronously by a first height H1 at a first speed V1, so as to switch from the sitting posture to the semi-sitting posture; and after switching to the semi-sitting posture, judging whether the user's height exceeds a preset standard height threshold;

[0010] If the standard height threshold is not exceeded, controlling the height-adjustable desk and the height-adjustable chair to rise synchronously by a second height H2 at a second speed V2, and then controlling the height-adjustable desk to continue to rise by a third height H3 at a third speed V3, so that the user switches from the semi-sitting posture to the standing posture;

[0011] If the standard height threshold is exceeded, controlling the height-adjustable desk and the height-adjustable chair to rise synchronously by a second height H2 at a second speed V2, and then controlling the height-adjustable desk to continue to rise by a third height H3 at a third speed V3, and at the same time controlling the monitor bracket to rise by a fourth height H4 at a fourth speed V4, so that the user switches from the semi-sitting posture to the standing posture; or, controlling the height-adjustable desk and the height-adjustable chair to rise synchronously by a second height H2 at a second speed V2, and then controlling the height-adjustable desk to continue to rise by a fifth height H5 at a third speed V3, so that the user switches from the semi-sitting posture to the standing posture;

[0012] Among them, the value ranges of the first speed V1 and the second speed V2 are: 2.5 mm / s - 3.5 mm / s; the value ranges of the third speed V3 and the fourth speed V4 are: 3.5 mm / s - 8 mm / s;

[0013] Among them, the step of real-time monitoring whether the user is in a sedentary state specifically includes: obtaining the actual duration of the user's sitting posture in real time; judging whether the actual duration is greater than or equal to the default duration threshold T0; if the actual duration is greater than or equal to the default duration threshold T0, determining that the user is in a sedentary state, and controlling the lifting desk and the lifting seat to lift synchronously to switch from the sitting posture to the semi-sitting posture.

[0014] In some embodiments, the control method further includes the steps:

[0015] Judging whether the actual duration is greater than or equal to a preset duration threshold, and the preset duration threshold = the default duration threshold T0 - a preset early trigger time interval t;

[0016] If the actual duration is greater than or equal to the preset duration threshold, determining that the user is about to enter a sedentary state, and controlling the lifting desk and the lifting seat to lift synchronously to switch from the sitting posture to the semi-sitting posture.

[0017] In some embodiments, the early trigger time interval t is the duration required for the lifting desk to rise synchronously at the second speed V2 by the second height H2.

[0018] In some embodiments, the control method further includes the steps: real-time monitoring the user's posture, if the posture is a forward lean of the standard sitting posture, controlling the monitor stand on the office desk to move backward by a corresponding distance according to the forward lean distance; or, if the posture is a backward lean of the standard sitting posture, controlling the monitor stand on the office desk to move forward by a corresponding distance according to the backward lean distance; or, if the posture is a left lean or a right lean of the standard sitting posture, controlling the monitor stand on the office desk to rotate left and right.

[0019] In some embodiments, the control method further includes the steps: during the process of controlling the lifting desk and the lifting chair to rise synchronously, real-time monitoring the actual speeds of the lifting desk and the lifting chair; judging whether the difference between the actual speeds of the two is greater than or equal to a preset first speed difference threshold;

[0020] If the difference between the actual speeds of the two is greater than or equal to the first speed difference threshold, controlling the lifting desk and the lifting seat to stop rising;

[0021] If the difference between the actual speeds of the two is less than the first speed difference threshold, judging whether the difference between the actual speeds of the two is less than a preset second speed difference threshold and greater than or equal to a preset third speed difference threshold;

[0022] If the difference between the actual speeds of the two is less than the first speed difference threshold and greater than or equal to the second speed difference threshold, taking the one with the lowest speed of the two as a reference, adjust the speed of the other one so that the speed difference between the two is less than the preset speed difference threshold;

[0023] If the difference between the actual speeds of the two is less than the second speed difference threshold and greater than the third speed difference threshold, give a warning to indicate that the risk perceived by the user due to the speed difference between the two increases.

[0024] In some embodiments, the control method further includes the step of: when the lifting chair rises to a second height H2, controlling the lifting chair to move backward by a preset distance.

[0025] Before the step of real-time monitoring whether the user is in a sedentary state in some embodiments, it further includes the steps of:

[0026] Obtain the user type of the user, where the user type includes hypersensitive users, sensitive users, and non-sensitive users;

[0027] Match the corresponding lifting speed in the database based on the user type:

[0028] If it is a hypersensitive user, the lifting speed matched in the database is 2.5 mm / s - 3 mm / s;

[0029] If it is a sensitive user, the lifting speed matched in the database is 3 mm / s - 3.8 mm / s;

[0030] If it is a non-sensitive user, the lifting speed matched in the database is 3.8 mm / s - 8 mm / s.

[0031] In some embodiments, when it is determined that the height of the user exceeds the preset standard height threshold, it further includes the steps of:

[0032] Judge whether the height of the user exceeds the preset height threshold, where the preset height threshold > the standard height threshold;

[0033] If it exceeds, control the lifting table and the lifting chair to rise synchronously to a second height H2 at a second speed V2, and then control the lifting table to continue rising to a sixth height H6 at a third speed V3, and at the same time control the monitor bracket to rise to a seventh height H7 at a fourth speed V4, so that the user switches from a semi-sitting position to a standing position; or, control the lifting table and the lifting chair to rise synchronously to a second height H2 at a second speed V2, and then control the lifting table to continue rising to an eighth height H8 at a third speed V3, so that the user switches from a semi-sitting position to a standing position; where, H6 + H7 = H8 > H5.

[0034] In some embodiments, the sixth height H6 > the fourth height H4.

[0035] In some embodiments, the step of controlling the display bracket to rise to the sixth height H6 at the fourth speed V4 specifically includes:

[0036] Determine whether the current position of the climber of the display bracket is at the bottom of the climbing rod of the display bracket. If so, control the climber to climb along the climbing rod at the fourth speed V4; otherwise, control the upper robotic arm and / or the lower robotic arm in the display bracket to drive the screen interface to rise to the sixth height H6.

[0037] Beneficial effects: (1) In the present invention, by respectively providing lifting mechanisms for the lifting table and the lifting chair, and setting up a display bracket that can be adjusted in multiple dimensions, the lifting table and the lifting chair are lifted and lowered synchronously under the drive of the corresponding driving devices, thereby realizing the adjustment of the user's posture. Moreover, by setting pressure sensors to collect pressure data, the main controller determines whether the user has been sitting for a long time based on the collected pressure data. If so, it automatically controls the lifting and lowering of the table and chair, so that the user "passively" adjusts the sitting posture, that is, the user interrupts the current work task to actively control the lifting and lowering of the table and chair to adjust the sitting posture. (2) By controlling the lifting and lowering speed of the table and chair in stages, the user's "semi-passive" change of sitting posture is realized to minimize the risk of interrupting the user. For example, when switching from a sitting posture to a semi-sitting posture, the speed of controlling the lifting and lowering of the table and chair is minimized, thereby reducing the risk of being detected by the user during this stage and distracting their attention or interrupting the work task; during the process of switching from a semi-sitting posture to a standing posture, in the early stage, the lifting chair provides assistance to the user, and in the later stage, the user cooperates with the speed of the lifting table by themselves to enter the standing posture. During the process of switching from a semi-sitting posture to a standing posture, although the user is aware of it, usually the user will actively cooperate with the rising speed of the lifting table. Therefore, the display is almost lifted and lowered synchronously with the user or the speed difference is not large. Therefore, even if the user is aware of it, it will not interrupt their work. (3) In order to adapt to users of different heights, a display bracket that can be adjusted in multiple dimensions is set up, so that the three can cooperate to adapt to users of different heights. Moreover, a multi-stage lifting structure is formed between the climbing rod and the upper and lower robotic arms of the display bracket and the lifting table, so that the lifting range can not only cover sitting postures of different heights, but also cover standing postures of most different heights. For example, most users can be covered by the lifting and lowering of the lifting table, while some users need the cooperation of the lifting table and the climbing rod for lifting and lowering to cover, and even a small number of users need the cooperation of the lifting table, the climbing rod and the upper and lower robotic arms to cover, which is applicable to multi-user scenarios. In addition, the climbing rod of the display bracket is movable, and the display bracket can also move relative to the lifting table, thus forming a multi-stage adjustment structure with an increased adjustment range and a larger applicable range. (4) Most of the existing technologies intervene after discovering that the user has been sitting for a long time. In this application, the lifting and lowering of the lifting table and chair are controlled in advance to prevent entering a long sitting state. Further, the lifting and lowering speeds are respectively controlled according to the user's sensitivity to the lifting movement, thereby further reducing the risk of being detected by the user and distracting their attention or interrupting the work task during the process of switching from a sitting posture to a semi-sitting posture. (5) By setting a driving device and a force transmission member in the upper and lower robotic arms of the display bracket, and setting a rocker or a rocker controller (the working principle is the prior art and will not be elaborated here), the user can manually control the display bracket or the lifting table and chair through the rocker controller (that is, the remote controller identifies the user's intention through sensing technology, for example, rising or falling, and then sends a control instruction to the corresponding power mechanism; if the user stops triggering the rocker controller, the rising or falling stops), so as to reach the desired angle or height.In addition, a gear set and a wire transmission structure are provided in the upper and lower mechanical arms, that is, the gear set is used to amplify the torque and speed, so that a low-power motor can be used. At the same time, a wire is provided to transmit the tension to realize flexible transmission, so as to realize the rotation of the mechanical arm. Compared with the method of directly using a motor to drive the rotation, the motor power requirement is lower, and the low motor power requirement makes it possible to use a small motor, which can be stored inside the mechanical arm, making it easier to realize the lightweight design of the display bracket and making the overall structure more concise and simple. If a direct motor is used to drive each rotating connection point, the motor needs to be placed outside one end of the rotating shaft, which not only makes the entire structure of the display bracket heavy and unsightly, but also when the display adjusts its angle, the display bracket is unbalanced due to the gravity of multiple motors themselves. (6) The present invention monitors the user's posture information in real time by means of a camera device provided on the lifting table or the display bracket, and then the main controller performs posture recognition and judgment, and performs corresponding control according to the recognition result. For example, if the posture is recognized as a standard sitting forward leaning posture, the rear cover is controlled to move backward on the base a corresponding distance according to the forward leaning distance, so that the user's line of sight center is as close as possible to or maintained at 15°-20° below the horizontal line of sight; or, if the posture is a standard sitting backward leaning posture, the rear cover is controlled to move forward on the base a corresponding distance according to the backward leaning distance, so that the user's line of sight center is as close as possible to or maintained at 15°-20° below the horizontal line of sight; or, if the posture is a standard sitting left leaning posture or a standard sitting right leaning posture, the upper robotic arm connector is controlled to rotate according to the left leaning distance, thereby reducing the deviation of the user's line of sight. (7) The control method provided by the present invention monitors the actual speeds of the lifting table and the lifting chair in real time during the process of controlling the synchronous ascent of the lifting table and the lifting chair; and determines whether the difference between the actual speeds of the two is greater than or equal to the preset first speed difference threshold; if the difference between the actual speeds of the two is greater than or equal to the first speed difference threshold, the lifting table and the lifting chair are controlled to stop rising; if the difference between the actual speeds of the two is less than the first speed difference threshold, it is determined whether the difference between the actual speeds of the two is less than the preset second speed difference threshold and greater than the preset third speed difference threshold; if the difference between the actual speeds of the two is less than the first speed difference threshold and greater than or equal to the second speed difference threshold, the speed of the other one is adjusted based on the lowest speed of the two, so that the speed difference between the two is less than the preset speed difference threshold. That is, by monitoring the speed difference of the lifting table and the lifting chair during the synchronous ascent and descent, and adjusting the speed according to the speed difference, the risk of being perceived by the user due to the large speed difference between the two is avoided or reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale. Obviously, the following-described drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0039] Figure 1 Schematic diagram of the overall structure of an embodiment of the integrated desk and chair in the present invention; Figure 2 Schematic diagram of the monitor bracket structure in an embodiment of the integrated desk and chair in the present invention; Figure 3 Schematic diagram of the interface between the upper robotic arm and the screen in an embodiment of the integrated desk and chair in the present invention; Figure 4 Schematic diagram of the internal structure of the upper robotic arm in an embodiment of the integrated desk and chair in the present invention; Figure 5 Schematic diagram of the internal structure of the lower robotic arm in an embodiment of the integrated desk and chair in the present invention; Figure 6 Schematic diagram of the climber and the climbing rod structure in an embodiment of the integrated desk and chair in the present invention;

[0040] Figure 7 Schematic diagram of the internal structure of the support base in an embodiment of the integrated desk and chair in the present invention; Figure 8 Schematic diagram of the structure of the lifting desk and chair in the present invention; Figure 9 Schematic diagram of the internal structure of the lifting tabletop; Figure 10 Schematic diagram of the internal structure of the lifting arm of the lifting table; Figure 11 Schematic diagram of the internal structure of the base of the lifting table; Figure 12 Schematic diagram of the structure of the lifting chair; Figure 13 Schematic diagram of the internal structure of the support plate of the lifting chair; Figure 14 Schematic diagram of the internal structure of the lifter of the lifting chair; Figure 15 Schematic diagram of the structure of the monitor bracket in Embodiment 2; Figure 16 Schematic diagram of the standard sitting posture; Figure 17 Schematic diagrams of the user from the sitting posture to the semi-sitting posture and then from the semi-sitting posture to the standing posture; Figure 18 Flowchart of an embodiment of a control method for a desk in the present invention.

[0041] Summary of the identification of reference numerals: 1 - monitor bracket, 10 - screen interface, 11 - upper robotic arm connector, 12 - upper robotic arm, 13 - lower robotic arm, 14 - climbing rod, 15 - climber, 16 - bracket base; 1001 - screen interface rotating shaft; 1201 - connection channel, 1202 - connector body, 1203 - metal cable, 1204 - second gear, 1205 - first power mechanism, 1206 - electric wire, 1207 first gear, 1208 - fourth gear, 1209 - second power mechanism, 1210 - third gear, 1211 - metal cable; 1301 - conductive slip ring, 1302 - metal cable, 1303 - third power mechanism, 1304 - sixth gear, 1305 - cover, 1306 - seventh gear, 1307 - eighth gear, 1308 - electric wire, 1309 - wire slip ring; 1401 - rocker, 1402 - climbing rack, 1403 - housing; 1501 - conductive boss, 1502 - climber housing, 1503 - fourth power mechanism (such as a motor), 1504 - end cap; 1601 - upper cover, 1602 - rack, 1603 - ninth gear, 1604 - base II; 1605 - guide rail; 2 - lifting table, 21 - panel, 22 - lifting arm, 23 - base; 2101 - expansion interface, 2102 - rocker controller, 2103 - panel edge, 2104 - panel outer plate, 2105 - panel bottom plate, 2106 - camera module; 2201 - first housing of the lifting arm, 2202 - lifting screw, 2203 - second housing of the lifting arm; 2301 - first driving device, 2302 - bottom plate housing, 2303 - first pressure sensor, 2304 - telescopic cover, 2305 - middle plate of the bottom plate, 2306 - telescopic rod, 2307 - bottom plate base, 2308 - main controller; 3 - lifting chair, 31 - support plate, 32 - upper lifter, 33 - lower lifter, 34 - support base; 3101 - support plate housing, 3102 - second pressure sensor, 3103 - hard base, 3104 - shaft hole; 3201 - shaft end cap, 3202 - upper lifter housing, 3203 - internally threaded sleeve; 3301 - screw, 3302 - lower lifter housing; 3401 - soft shell of the base, 3402 - electric telescopic rod, 3403 - rotating shaft, 3404 - front soft shell of the base, 3405 - base connection part, 3406 - mounting plate. Detailed implementation manners

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0043] In this text, suffixes such as "module", "component", or "unit" used to represent components are only for the convenience of explaining the present invention and have no specific meaning in themselves. Therefore, "module", "component", or "unit" can be used interchangeably.

[0044] In this text, the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "outer", "front", "rear", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0045] In this text, unless otherwise clearly defined and limited, terms such as "installed", "provided with", "connected", etc. shall be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In this text, "and / or" includes any and all combinations of one or more of the listed related items.

[0047] In this text, "a plurality of" means two or more, that is, it includes two, three, four, five, etc.

[0048] For the convenience of description, in this text, Figure 1 taking, for example, the height direction (or vertical direction, i.e., the lifting direction) of a desk as the Y-axis, the width direction of the desktop as the X-axis, and the length direction of the desktop (i.e., the moving direction of the lifting chair) as the Z-axis to construct a coordinate system. The description of each direction in the subsequent embodiments is based on this coordinate system as a reference.

[0049] Embodiment 1: Refer to Figure 1 and Figure 7, the present invention provides a desk with integrated table and chair, which includes a lifting table 2 and a lifting chair 3. The lifting table 2 includes: a base 23, a lifting arm 22 installed on the base 23, and a panel 21 connected to the top end of the lifting arm 22; the bottom end of the lifting arm 22 is connected to the output shaft of a first driving device 2301 of the base 23, so that the lifting arm 22 drives the panel 21 to move up and down. Among them, the lifting chair 3 is slidably connected to the base 23 in a manner that can move back and forth relative to the center line direction of the base 23 (i.e., along the Z-axis direction). Specifically, a horizontal movement mechanism is provided between the base 23 and the lifting chair 3, and a corresponding driving mechanism is provided, so that under the drive of the driving mechanism, the horizontal movement mechanism drives the lifting chair 3 to move back and forth on the base 23.

[0050] See Figure 9 and Figure 10 , in some embodiments, the lifting arm 22 includes: a lifting screw 2202, a first outer shell 2201 of the lifting arm connected to the bottom of the panel 21, and a second outer shell 2203 of the lifting arm connected to the base 21. The lifting screw 2202 is disposed in the second outer shell 2203 of the lifting arm, and its top end is threadedly connected to the internal thread in the first outer shell 2201 of the lifting arm. The bottom end of the lifting screw 2202 is connected to the output shaft of a first driving device 2301 (for example, a motor) on the base 23. When the first driving device 2301 rotates, the lifting screw 2202 rotates relative to the first outer shell 2201 of the lifting arm, thereby driving the first outer shell 2201 of the lifting arm to move up and down relative to the second outer shell 2203 of the lifting arm.

[0051] See Figure 11 , in some embodiments, the bottom plate 23 includes a bottom plate base 2307, a bottom plate intermediate plate 2305, and a bottom plate outer shell 2302 that are sequentially covered from top to bottom; the bottom plate base 2307 ensures the firmness and anti-slip property when the device is placed on the ground. The bottom plate intermediate plate 2305 adopts a metal skeleton to ensure that when a person sits on the upper chair, it can support all the gravity. The bottom plate outer shell 2302 is then covered on the bottom plate intermediate plate 2305.

[0052] See Figure 11 , preferably, a first pressure sensor 2303 and a main controller 2308 are provided on the bottom plate intermediate plate 2305. Among them, the pressure sensor acquires pressure data and sends it to the main controller 2308 for data processing to identify whether the user is currently in a sedentary state (for example, when the monitored pressure value is greater than the preset pressure value and the duration exceeds the preset time, it can be determined as sedentary); and when the main controller 2308 identifies that the user is currently in a sedentary state, it controls the lifting arm of the lifting table 2 and the lifter of the lifting chair 3 to move up simultaneously to achieve the switch from sitting to standing posture, thereby realizing sedentary intervention.

[0053] In some embodiments, the bottom plate housing 2302 is fitted and connected to the second housing 2203 of the lifting arm.

[0054] In some embodiments, the above-mentioned horizontal movement mechanism includes: a second driving device (not shown in the figure, preferably a motor in this embodiment) electrically connected to the main controller 2308, and a telescopic rod 2306 connected to the second driving device. The end of the telescopic rod 2306 is fixedly connected to the lifting chair 3. The bottom plate housing 2302 is provided with a moving slot, and the bottom of the lifting chair 3 is connected to the telescopic rod 2306 through the moving slot. Further, the telescopic rod 2306 is provided with a telescopic cover 2304. The setting of the telescopic cover 2304 ensures that when the lifting chair 3 moves with the telescopic rod 2306, the internal structure will not be exposed, avoiding potential safety hazards.

[0055] See Figure 12 , in some embodiments, the lifting chair 3 includes: a support plate 31, a lifter, and a support base 34 connected in sequence. Among them, the lifter is provided with a third driving device (not shown in the figure, a motor is used in this embodiment), and the bottom end of the support base 34 is connected to the telescopic rod 2306 inside the base 23.

[0056] As Figure 14 shown, in some embodiments, the lifter includes: an upper lifter 32 rotatably connected to the support plate 31, and a lower lifter 33 rotatably connected to the support base 34. Among them, the upper lifter 32 includes: an upper lifter housing 3202, and an internal thread sleeve 3203 provided inside the upper lifter 32. The lower lifter 33 includes: a lower lifter housing 3302, and a screw rod 3301 provided inside the lower lifter 33. Among them, the screw rod 3301 is threadedly connected to the internal thread sleeve 3203. When the third driving device drives the screw rod 3301 to rotate, the internal thread sleeve 3203 moves up and down relative to the screw rod 3301, so that the upper lifter 32 moves up and down relative to the lower lifter 33. In this embodiment, the lifting process of the lifting seat is realized by setting the screw rod 3301 and the internal thread sleeve 3203. Compared with the lifting methods such as using hydraulic cylinders or air cylinders, its stability is better. Especially after a long time of use, it can, to a certain extent, avoid or reduce the probability of jamming or pausing during the lifting process caused by wear of various components after a long time of use in the case of using hydraulic cylinders or air cylinders to achieve lifting, thereby further reducing the risk of being detected by users. And, the lifting arm of the lifting table also adopts the same lifting method, making it easier to control the synchronization of the two.

[0057] In some embodiments, the upper lifter 32 is provided with a rotating shaft, and the rotating shaft is parallel to the X-axis direction. A shaft hole 3104 is provided at the bottom of the support plate 31. The upper lifter 32 and the support plate 31 are rotationally connected through the shaft hole 3104 and the rotating shaft. By rotationally connecting the support plate 31 and the upper lifter 32, the user can adjust their sitting posture by themselves. For example, leaning forward or backward along the Z-axis direction. Of course, further, a corresponding power mechanism can be provided to drive the rotation of the rotating shaft, so as to realize the rotation of the support plate 31 around the X-axis rotating shaft, and further realize leaning forward or backward along the Z-axis direction.

[0058] In some embodiments, the support base 34 includes: a mounting plate 3406. A base connection part 3405 is provided at the lower part of the mounting plate 3406. The base connection part 3405 is connected to the telescopic rod 2306 of the base 23. An electric telescopic rod 3402 is provided at the upper part of the mounting plate 3406. The two ends of the electric telescopic rod 3402 are respectively rotationally connected to the mounting plate 3406 and the screw rod 3301. The electric telescopic rod 3402 is used to drive the screw rod 3301 to tilt forward and backward, so as to realize the adjustment of the front and rear tilt angles of the lift chair 3. Compared with the method of setting a rotating shaft at the bottom of the support plate 31, this method can realize a larger tilt angle, that is, realize the adjustment of the secondary tilt angle.

[0059] In some embodiments, a base soft shell 3401 and a front base soft shell 3404 are provided outside the support base 34 to prevent the mechanical structure from being exposed when the chair tilts forward and backward, and avoid potential safety hazards such as liquid penetration.

[0060] In some embodiments, a rocker controller 2102 (similar to a remote control) is provided on the panel 21. It uses sensing technology to sense the user's intention, so that the user can manually control the lifting of the lift table 2 or the lift chair 3, or the left and right tilt or front and rear tilt of the lift chair 3 (for example, by controlling the electric telescopic rod).

[0061] The following is a description of the process of automatically controlling the lifting and lowering by the main controller in this embodiment in combination with the working principle. Of course, as mentioned above, the lifting and lowering of the lifting table 2 and the lifting chair 3 in this embodiment can also be manually adjusted by the user. In the prior art, in order to avoid users sitting for a long time, "interruption-type" forced intervention is usually adopted, for example, by reminding the user, and then the user manually adjusts the lifting table and chair to achieve sitting posture adjustment, or automatically adjusts the seat to allow the user to switch to other types of sitting postures, or distances the chair from the desk, or lifts the desk or chair separately, so as to divert the user's attention and make the user withdraw from the current work task. However, people usually maintain a sitting posture for about 30 minutes, which means that the user needs to be forcibly interrupted every half an hour, which greatly destroys the user's concentration and continuity when working, thereby reducing work efficiency. Therefore, in this embodiment, a completely opposite intervention method is adopted, that is, under the premise of not interrupting the user's work continuity as much as possible (a small part of the attention may be distracted in the process, but it will not interrupt the user's work task), the user is guided to gradually switch from a sitting posture to a standing posture.

[0062] Specifically, by real-time monitoring of the user's sitting posture, once it is identified that the user is in a sedentary state, the lifting table 2 and the lifting chair 3 are controlled to rise and fall synchronously at a very slow speed (for example, according to the double-blind perception experiment, within the range of 2.5mm / s-3.8mm / s, the user is not easy to detect, wherein the probability of 2.5mm / s being detected is 5%; and the probability of 3.8mm / s being detected by the user is 18%), so as to gradually transition from a sitting position to a semi-sitting position, and then from a semi-sitting position to a standing position. In particular, in the process from a sitting position to a semi-sitting position, the lifting table and the lifting chair are synchronously raised and lowered at almost the same or very close speeds, and the speed is very slow, so that in a state of high concentration, the user is not easy to detect the lifting of the table and chair, but his sitting posture has changed during the lifting process. That is, the user's work tasks are almost not interrupted, or the user's work tasks are rarely interrupted (for example, users who are very sensitive to the lifting process). Of course, the lifting of tables and chairs can also be controlled periodically. For example, the active lifting of tables and chairs can be controlled every 30 minutes to achieve a transition from a sitting position to a semi-sitting position, and then from a semi-sitting position to a standing position.

[0063] Furthermore, since the lifting speed of the lifting table 2 and the lifting chair 3 is very slow, if intervention is made after the user is detected to be in a sedentary state, there will be a certain lag, so a periodic adjustment method can be adopted. For example, 30 minutes is usually considered as a long-term sitting, so accordingly, in order to prevent the user from reaching the state of long-term sitting, intervention is made in advance, for example, intervention is made at 29 minutes.

[0064] Similarly, in some other embodiments, during real-time monitoring, it is determined whether the user is in a sedentary state based on whether the duration of the user's sitting posture detected in real time is greater than a preset duration threshold (for example, 30 minutes, which is the default empirical value in the industry). Therefore, based on the same principle as above, the preset duration threshold can be adjusted to: default duration threshold - preset advance duration. For example, the preset duration threshold T: default duration threshold T0 - preset advance trigger time interval t; where T0 is the default empirical value of 30 minutes; and t is 0.5 minutes - 3 minutes. In some other embodiments, t is the time required to change from a sitting posture to a semi-sitting posture.

[0065] Embodiment 2: Based on the above-mentioned office desk, the present invention provides a control method for an office desk. Specifically, the method includes the steps:

[0066] S101 Real-time monitor whether the user is in a sedentary state; if the user is in a sedentary state, execute step S102; if the user is not in a sedentary state, no operation is performed.

[0067] In some embodiments, the first pressure sensor 2303 provided on the base 23 of the lifting desk 2 and the second pressure sensor 3102 on the lifting chair 3 are used to obtain pressure data in real time (including pressure values and / or pressure distributions, etc.), and the main controller determines whether the user is in a sitting posture based on the pressure data collected in real time (this is the prior art and will not be elaborated here; of course, the image data collected in real time by the camera module 2106 provided on the panel 21 can also be used or combined to determine whether the user is in a sitting posture), and compares the duration of the user's sitting posture with the preset duration threshold (for example, 30 minutes). If the preset duration threshold is reached, the main controller 2308 determines that the user is in a sedentary state and thus needs to be intervened; if the preset duration threshold is not reached, it is not a sedentary state and naturally no intervention is required. Among them, the pressure sensor and the camera module are both wirelessly connected to the main controller.

[0068] S102 Control the lifting desk and the lifting chair to both rise synchronously by a first height H1 at a first speed V1, so that without interrupting the user's work task, the user can be switched from a sitting posture to a semi-sitting posture, and then execute step S103.

[0069] The non-interruption in this embodiment means that the user can still continue the work task. For example, even if a small part of their attention is distracted, as long as the distance between them and the desk and chair is within a suitable range, the user can still continue the work task.

[0070] S103 After switching to a semi-sitting posture, determine whether the user's height exceeds a preset standard height threshold; if not, execute step S104; if so, execute step S105.

[0071] Since the lifting heights of the lifting table and the lifting chair can be known in advance, therefore, the rising height required for the user to switch from a sitting position to a semi-sitting position can be automatically calculated based on the user's height and the heights of the table and chair in the sitting position. Thus, when the rising height is reached, the main controller can know that the semi-sitting position is currently reached. Of course, in some other embodiments, a specified height can also be directly set as the semi-sitting position.

[0072] S104 controls the lifting table and the lifting chair to both rise synchronously by a second height H2 at a second speed V2, and then controls the lifting table to continue rising by a third height H3 at a third speed V3, so as to enable the user to switch from a semi-sitting position to a standing position.

[0073] S105 controls the lifting table and the lifting chair to both rise synchronously by a second height H2 at a second speed V2, and then controls the lifting table to continue rising by a fifth height H5 at a third speed V3, so as to enable the user to switch from a semi-sitting position to a standing position.

[0074] In some embodiments, the value ranges of the first speed V1 and the second speed V2 are: 2.5 mm / s - 3.8 mm / s; the value range of the third speed V3 is: 3.8 mm / s - 8 mm / s.

[0075] In some embodiments, during the process of the user switching from a sitting position to a semi-sitting position, the user hardly needs to actively participate. In fact, during the process of switching from a semi-sitting position to a standing position, especially after the lifting chair 3 reaches the maximum height (at this time, the lifting table 2 is still rising), the user needs to actively participate. That is to say, from a sitting position to a semi-sitting position, the user is almost passive, and the lifting speed is controllable. From a semi-sitting position to a standing position, especially after the lifting chair reaches the maximum height in the second half, the lifting speed of the lifting table actually needs to consider the speed of the user during the standing process. Therefore, in order to achieve the change of the sitting position or reduce the risk of being detected as much as possible without the user noticing, especially to reduce the risk of being detected during the process from a sitting position to a semi-sitting position, the first speed V1 of the lifting table and the lifting chair is less than the second speed V2 from a semi-sitting position to a standing position, and the second speed V2 ≤ the third speed V3. Preferably, the first speed V1 = 2.5 mm / s and the second speed V2 = 3 mm / s.

[0076] Since the lifting height of the lifting table 2, the lifting height of the lifting chair 3, and the height difference between the two are usually set based on the average height. Usually, in order to adapt to different users, there is a certain margin for the lifting height of the lifting table. For example, when the lifting table 2 rises to the specified height, a user with an average height stands in front of the lifting table in a standard standing position, and the center of their line of sight is within the optimal line of sight range of 15° - 20°, as Figure 16 and Figure 17As shown; when the height-adjustable desk is raised to the maximum height, even for users who are taller than the average height by a certain threshold (e.g., 5 - 10 cm) and stand in front of the height-adjustable desk in a standard standing posture, the center of their line of sight can be within the optimal line of sight range of 15° - 20°. Therefore, in order to accommodate more users, in this embodiment, when it is recognized that the user's height exceeds the preset height threshold (the preset height threshold is greater than the average height), in order to ensure the matching degree between the display and the user, in addition to controlling the height-adjustable desk 2 and the height-adjustable chair 3 to rise, during the process from semi-sitting to standing, even if the height-adjustable chair 3 has reached the maximum height, the main controller will also control the height-adjustable desk 2 to continue to rise until it matches the user's height (e.g., when the user stands in front of the height-adjustable desk in a standard standing posture and looks straight ahead, the display is located directly in front of the user's line of sight; specifically, the overall lifting height of the height-adjustable desk can be calculated in advance according to the user's height); or, until the center of the user's line of sight reaches the optimal line of sight range (specifically, the overall lifting height of the height-adjustable desk can be calculated in advance according to the user's height; of course, during the process from semi-sitting to standing, an image data acquisition device can also be used to obtain image data in real time, and then the image data can be analyzed to determine whether the center of the user's line of sight reaches the optimal line of sight range).

[0077] As mentioned above, in order to minimize the user's perception, the speed of the lifting process is very slow. Therefore, if the intervention is carried out after detecting that the user is in a sedentary state, there will be a certain lag. Thus, in this embodiment, the preset duration threshold T is adjusted based on a preset early trigger time interval t (e.g., 1 min - 2 min), so that the intervention can be carried out in advance. Specifically, when the actual duration of the user in the sitting posture is obtained in real time, the main controller determines whether the actual duration is greater than or equal to the preset duration threshold, and the preset duration threshold T = the default duration threshold T0 - the preset early trigger time interval t; if the actual duration is greater than or equal to the preset duration threshold, the main controller determines that the user is about to enter a sedentary state and controls the height-adjustable desk and the height-adjustable chair to lift synchronously, that is, step S102 is executed. Moreover, precisely because the lifting process is not easily perceptible to the user, the intervention can be carried out in advance, thereby achieving the prevention of sedentary behavior. Further, the early trigger time interval t is the time required for the height-adjustable chair to switch from the sitting posture to the semi-sitting posture at the first speed V1.

[0078] In the actual application process, since the lifting table 2 and the lifting chair 3 each adopt corresponding drive mechanisms, although the cooperation form of the screw and the threaded barrel is used to ensure the synchronization of the two, it is precisely because the lifting is achieved by the form of the screw and the threaded barrel. Therefore, during long-term use, it is inevitable that due to long-term wear, the lifting speeds of the two cannot be completely truly synchronized (that is, the speed difference between the two is less than the preset speed difference threshold), which will increase the risk of being perceived by the user during the lifting process, especially during the process from the sitting position to the semi-sitting position. Therefore, further, in order to reduce this risk, the method of this embodiment, during the process of controlling the synchronous upward movement of the lifting table 2 and the lifting chair 3, monitors the actual speeds of the lifting table and the lifting chair in real time (for example, an acceleration sensor or a displacement sensor can be used for monitoring, and then data processing is performed to obtain the actual speed); and the main controller determines whether the difference between the actual speeds of the two is greater than or equal to the preset first speed difference threshold (for example, 1 mm / s); if the difference between the actual speeds of the two is greater than or equal to the first speed difference threshold, the main controller controls the lifting table and the lifting chair to stop rising; if the difference between the actual speeds of the two is less than the first speed difference threshold, the main controller determines whether the difference between the actual speeds of the two is less than the preset second speed difference threshold (for example, 0.5 mm / s) and greater than the preset third speed difference threshold (for example, 0.2 mm / s); if the difference between the actual speeds of the two is less than the first speed difference threshold and greater than or equal to the second speed difference threshold, based on the one with the lowest speed of the two, the main controller controls the speed of the other to be adjusted so that the speed difference between the two is less than the preset speed difference threshold (for example, the third speed difference threshold or a smaller threshold); if the difference between the actual speeds of the two is less than the second speed difference threshold and greater than the third speed difference threshold, the main controller gives a warning to indicate that the risk of being perceived by the user may increase due to the speed difference between the two. That is, the speed difference is classified. In the first level, a risk warning is given. In the second level, the speed is regulated. In the third level, the lifting is directly stopped, and it is prompted that maintenance or repair is required. When the speed difference is at the third level, since the speed difference between the two is large, not only is it easy for the user to perceive, but it may even affect the user's sitting posture due to the large height difference between the table and the chair, thereby affecting their work tasks. Therefore, the lifting is directly stopped, that is, no intervention measures are taken, but the user is prompted to perform maintenance or repair or manual adjustment.

[0079] Further, in order to prevent the lifting chair 3 from interfering with the user's conversion from the semi-sitting position to the standing position, in this embodiment, when the lifting chair rises by H1 + H2, that is, when it rises to the maximum height, the main controller controls the lifting chair to move backward by a preset distance. Of course, if the user needs to switch from the standing position to the sitting position, the user can control the lifting chair to approach through the rocker controller 2102 in the above embodiment to facilitate the user to sit down.

[0080] Further, different users have different sensitivities to lifting. For example, generally, for a lifting speed of 3 mm / s, most users will not notice it. However, for some users with high sensitivity (e.g., vestibular sensitivity or certain lumbar spine injuries), it is actually possible for them to notice. Therefore, it is necessary to control the synchronous lifting speed of the lifting table 2 and the lifting chair 3 (especially the first speed V1 completely controlled by the driving mechanism during the process of switching from a sitting position to a semi-sitting position) in combination with the sensitivities of different users, so as to adapt to the individualization of users. Specifically, this method of this embodiment, before or after the step of real-time monitoring whether the user is in a sedentary state (i.e., before or after performing step S101), or when it is determined that the actual duration of the sitting position is greater than the preset duration threshold (i.e., before early intervention), further includes the steps:

[0081] Obtain the type of the user, and the type includes: ultra-sensitive users, sensitive users, and non-sensitive users.

[0082] Match the corresponding lifting speed (e.g., the first speed V1) in the database based on the type of the user;

[0083] If it is an ultra-sensitive user, the lifting speed matched in the database is 2.5 mm / s - 3 mm / s;

[0084] If it is a sensitive user, the lifting speed matched in the database is 3 mm / s - 3.8 mm / s;

[0085] If it is a non-sensitive user, the lifting speed matched in the database is 3.8 mm / s - 8 mm / s. Further, among non-sensitive users, if they are insensitive users, the matched lifting speed is 5.0 mm / s - 8 mm / s.

[0086] Specifically, the user type can be set by the user himself / herself when the user first uses it. Or, at the first use, let the user perform the corresponding sensitivity test (the sensitivity test of the user to the lifting movement is a prior art and will not be elaborated here). Of course, if the user type is set by the user himself / herself, correspondingly, it can also be corrected based on the test results.

[0087] Embodiment 3: As Figure 2 shown, the present invention further provides a movable display bracket, including: a screen interface 10 for installing a display device (preferably, a VESA interface), an upper robotic arm 12, a lower robotic arm 13 rotatably connected to the upper robotic wall 12, a climbing rod 14 rotatably connected to the lower robotic arm 13 through a climber 15, and a bracket base 16 slidably connected to the climbing rod 14 and movably installed on a lifting table (e.g., the lifting table in the first embodiment above), and further including an upper robotic arm connector 11, and both ends of the upper robotic arm connector 11 are rotatably connected to the upper robotic arm 12 and the screen interface 10 respectively.

[0088] As shown Figure 3 in the figure, the upper robotic arm 12 includes: a first power mechanism 1205 (a motor is adopted in this embodiment) disposed in the cavity of the upper robotic arm 12, a first gear 1207 disposed on the output shaft of the first power mechanism 1205, a second gear 1204 disposed in the upper robotic arm 12 and meshing with the first gear 1207, and a first wire winding mechanism coaxially disposed with the second gear 1204. A first force transmission member 1203 (a metal cable is adopted in this embodiment) is wound around the first wire winding mechanism, and its end is fixedly connected to the upper robotic arm connector 11; the upper robotic arm 12 further includes: a second power mechanism 1209, the second power mechanism 1209 is disposed in the upper robotic arm 12 near the connection with the lower robotic arm 13, a third gear 1210 is disposed on the output shaft of the second power mechanism, a fourth gear 1208 disposed in the upper robotic arm 12 and meshing with the third gear 1210, and a second wire winding mechanism coaxially disposed with the fourth gear 1208. The end of the second force transmission member 1211 wound around the second wire winding mechanism is fixedly connected to the lower robotic arm 13.

[0089] As shown Figure 4 in the figure, the lower robotic arm 13 includes: a third power mechanism 1303 (such as a motor) disposed in the lower robotic arm 13, a fifth gear 1305 disposed on the output shaft of the third power mechanism 1303, a sixth gear 1304 disposed in the lower robotic arm 13 and meshing with the fifth gear 1305, and a third wire winding mechanism coaxially disposed with the sixth gear 1304. The end of the third force transmission member 1302 (a metal cable is adopted in this embodiment) wound around the third wire winding mechanism is fixedly connected to the upper robotic arm 12; the lower robotic arm 13 further includes: a fourth power mechanism 1504, the fourth power mechanism is disposed in the lower robotic arm 13 away from the third power mechanism 1303, a sixth gear 1304 is disposed on the output shaft of the fourth power mechanism 1504, a seventh gear 1306 meshing with the sixth gear 1304, and a fourth wire winding mechanism coaxially disposed with the seventh gear 1306. The end of the fourth force transmission member 1302 wound around the fourth wire winding mechanism is fixedly connected to the climber 15.

[0090] In some embodiments, conductive bosses are respectively disposed at both ends of the upper robotic arm 12, and conductive slip rings 1309 are respectively disposed at the connections of the upper robotic arm 12 and the climber 15 with the lower robotic arm 13. The conductive bosses 1212 are rotatably connected to the conductive slip rings 1309. By providing the conductive slip rings, while ensuring rotation, electricity and electrical signals can pass between different components.

[0091] Furthermore, in order to ensure the stability of the upper and lower robotic arms 12 and 13 in different forms, and thus ensure the stability of the display, as Figure 1The stability of the forms of the upper and lower robotic arms shown, as well as a larger rotation space (such as Figure 16 and Figure 17 , the two robotic arms can be folded together), in this embodiment, the overall structure of the upper robotic arm and the lower robotic arm is in an S shape. Specifically, it includes a robotic arm body, and rotating shaft mounting parts for connecting rotating shafts are respectively arranged at both ends of the robotic arm body, and the two rotating shaft mounting parts are respectively located on the opposite sides of the robotic arm body. Preferably, the obtuse angle between the extending direction of the rotating shaft mounting part and the center line of the robotic arm body is 120° - 160°.

[0092] Such as Figure 5 and Figure 6 shown, in some embodiments, the climber 15 is provided with a fifth power mechanism, an eighth gear 1307 is arranged on the output shaft of the fifth power mechanism, a climbing rack 1402 is arranged on the climbing rod 14, and the climber 15 moves up and down on the climbing rod 14 through the cooperation of the eighth gear 1307 and the climbing rack 1402.

[0093] In some embodiments, a rocker 1401 (similar to a remote control) is arranged on the top surface of the climber 15. By pressing the rocker 1401, the fifth power mechanism is controlled to drive the climber 15 to move up and down on the climbing rod. Further, the climbing rod is also provided with a corresponding power mechanism, and the remote control 1401 can also control this power mechanism to drive the climbing rod to rotate, so as to respectively realize two-stage adjustment of the angle in cooperation with the screen interface. For example, fine adjustment is realized by rotating through the screen interface, and larger angle adjustment is realized by the climbing rod.

[0094] In some embodiments, each power mechanism is a motor, and the first force transmission member, the second force transmission member, and the third force transmission member are metal cables.

[0095] Preferably, the rotating shaft at the rotating connection between the lower robotic arm 13 and the climber 15 is perpendicular to the lifting direction of the climber 15, and the rotating shafts at the rotating connections between the lower robotic arm 13 and the upper robotic arm 12, and between the upper robotic arm 12 and the upper robotic arm connector 11 are all parallel to the rotating shaft at the rotating connection between the lower robotic arm 13 and the climber 15; and the rotating shaft at the rotating connection between the screen interface 10 and the upper robotic arm connector 11 is perpendicular to the rotating shaft at the rotating connection between the upper robotic arm 12 and the upper robotic arm connector 11. That is, the upper robotic arm connector 11, the upper robotic arm 12, the lower robotic arm 13, and the climber 15 form a four-bar linkage mechanism in the same vertical plane.

[0096] When directly using a motor to drive the rotation at the rotating joints at both ends of the upper robotic arm 12 or the lower robotic arm 13, on the one hand, it is necessary to place the motor outside the rotating joint, which is prone to dust contamination and thus affects the service life of the motor; on the other hand, the direct output mode of the motor has high requirements for the precision control of the motor. In this embodiment, a motor is provided and a combination of gears and a wire rope is set as the transmission mechanism to transmit the output of the motor to the metal cable to achieve flexible transmission.

[0097] As Figure 7 shown, the support base 16 includes an upper cover 1601 and a base II 1604. The upper cover 1601 is arranged on the base II 1604 in a manner that can move back and forth relative to the base 1604. By providing a slidable upper cover 1601 on the base II, the distance between the display and the user can be adjusted according to actual needs.

[0098] In some embodiments, a rack 1602 is provided at the bottom of the upper cover 1601, and a sixth power mechanism is provided on the base II 1604. A ninth gear 1603 is provided on the output shaft of the sixth power mechanism. The ninth gear 1603 cooperates with the rack 1602 to make the upper cover 1601 move back and forth relative to the base 23.

[0099] In some embodiments, a guide rail 1605 is provided at the lower part of the base 23 and is slidably engaged with a slider at the expansion interface 2101 on the lifting table, so as to be detachably installed on the lifting table.

[0100] In this embodiment, the height of the display in the Y-axis direction, the front-back distance in the Z-axis direction, and the rotation angle around the Y-axis are realized by setting the climber 15 and the upper and lower robotic arms 12 and 13, so as to realize the multi-dimensional adjustment of the display. On the other hand, as mentioned above, the maximum lifting height of a lifting table is usually set based on the average height. Even for users with a higher height, a certain margin is set for the maximum lifting height of the lifting table. However, if the lifting table rises too high, it will increase the power consumption of the power mechanism and reduce the service life, etc. The lifting table being too high is also prone to problems such as imbalance or center of gravity deviation. Therefore, in order to adapt to some users with a higher height, the lifting of the climber and the upper and lower robotic arms is used in cooperation, so that even in the face of some users with a very high height, there is no need to continuously control the lifting table to rise to realize the rise of the display, but to cooperate with the climber and / or the upper and lower robotic arms to realize the rise of the display.

[0101] In some other embodiments, a camera module is further provided on the display stand. The camera module is used to obtain human body posture information and send it to the main controller (by wireless transmission). Then, the main controller identifies the human body posture information and controls the rotation of the upper and lower robotic arms in the display stand and / or the rotation of the screen interface 10, so as to adjust the distance between the display and the user. Among them, the main controller can be integrated on the display stand (that is, a corresponding main controller is separately provided on the display stand), or the main controller provided on the base in the first embodiment above can be directly adopted.

[0102] See Figure 16 , in the standard sitting posture state, the climber 15 is located at a preset initial position on the climbing rod 14 (each user adjusts this initial position according to their own height). The upper robotic arm 12 and the lower robotic arm 13 are located in a vertical plane and are parallel to each other. At this time, the viewing distance of the user from the display screen is L, and the angle between the user's line of sight center and the horizontal line is 15 degrees - 20°.

[0103] When the main controller recognizes that the user tilts to the right or left from the standard sitting posture, it controls the upper robotic arm connector 11 to rotate left and right in the vertical direction of the Y-axis; or, when the main controller recognizes that the user tilts forward from the standard sitting posture, it controls the upper cover to move backward (i.e., in the direction away from the user) a corresponding distance along the Z-axis on the base II; or, when the main controller recognizes that the user tilts backward from the standard sitting posture, it controls the upper cover to move forward (i.e., in the direction close to the user) a corresponding distance along the Z-axis on the base 11.

[0104] Furthermore, when the user is in a sitting or standing posture, changes in the sitting or standing posture may occur during their work. For example, sitting posture forward tilt, backward tilt, right tilt or left tilt. Similarly, when standing, there may also be forward tilt, backward tilt, right tilt or left tilt, which will cause the user's line of sight center to shift and not be between 15° - 20° below the horizontal line of sight. Therefore, it is also necessary to monitor the user's posture information or standing posture information in real time. If there is a change, corresponding adjustments need to be made.

[0105] Specifically, a camera module provided on the lifting table or the display stand is used to monitor the user's posture information in real time. Then, the main controller performs sitting posture recognition and judgment. If the recognized posture information is a standard sitting posture forward tilt, the rear cover is controlled to move backward a corresponding distance on the base according to the forward tilt distance; or, if the posture information is a standard sitting posture backward tilt, the rear cover is controlled to move forward a corresponding distance on the base according to the backward tilt distance; or, if the posture information is a standard sitting posture left tilt or a standard sitting posture right tilt, the upper robotic arm connector is controlled to rotate a corresponding angle according to the left tilt distance.

[0106] Similarly, modules such as camera devices installed on the lift table or the monitor stand are used to monitor the user's standing posture information in real time, and then the main controller performs standing posture recognition and judgment. If the standing posture information is a standard standing posture with backward tilt, the upper robotic arm and the lower robotic arm are controlled to expand according to the backward tilt distance, so that the monitor moves a corresponding distance in the direction close to the user, but the height remains unchanged, so that the user's line of sight center is 15°-20° below the horizontal line of sight; or, if the standing posture information is a standard standing posture with left tilt or a standard standing posture with right tilt, the upper robotic arm connector is controlled to rotate left and right around the Y axis according to the left tilt distance, so that the user's line of sight center is 15°-20° below the horizontal line of sight.

[0107] See Figure 16 and Figure 17 , the standard sitting posture means that the visual distance between the user and the monitor is L, and the angle between the user's line of sight center and the Z axis is 15 degrees - 20°. See Figure 17 As shown on the far right in

[0108] In some embodiments, the monitor stand is installed on the lift table and chair, and through the joint cooperation with the lift table and chair, the human field of view is in the best field of view.

[0109] Furthermore, in the first embodiment above, the lifting height of the lift table is set based on the average height, that is, when the lift table 2 rises to the maximum height and stands in front of the lift table in a standing posture, it can usually see the front monitor (and can be kept within the best line of sight range of 15°-20°). However, for some users whose height exceeds the average height, when they stand in front of the lift table in a standing posture and look straight ahead, they may not be able to maintain the above-mentioned best line of sight range. Although the total rising height of the lift table can be increased to match different users, if the desktop of the lift table rises too high, it will cause certain problems of center of gravity deviation or imbalance, thus affecting the user experience. Therefore, in this embodiment, the function of setting the climbing rod and the upper and lower robotic arms is also to be able to cooperate with the lift table to lift and lower, so as to adapt to more users. For example, when the main controller set on the monitor stand or on the lift table in the first embodiment above recognizes that the user's height exceeds the preset height threshold, in order to ensure the matching degree between the monitor and the user, in addition to controlling the lift table and the lift chair to rise, during the process from semi-sitting posture to standing posture, the monitor stand is also controlled to rise synchronously. The specific principle can be referred to the subsequent embodiments.

[0110] Embodiment 4: As Figure 15As shown in the figure, the present invention also provides another display stand, which includes the stand base movably mounted on the lifting table in the above embodiment. Two climbing rods are arranged in parallel on the stand base. Each climbing rod is provided with a climber that can move up and down relative to the climbing rod. A lower robotic arm is rotatably arranged on the climber. The other end of the lower robotic arm is rotated with an upper robotic arm. The other end of the upper robotic arm connector is rotatably connected to the upper robotic arm connector. A screen interface for installing a display device is arranged on the upper robotic arm connector. Among them, the working principles of each component are the same as those of each component in the above embodiment and will not be elaborated here. The difference is that in this embodiment, since it corresponds to two side-by-side displays, the axis of rotation at the connection between the lower robotic arm and the climber is parallel to the lifting direction of the climber, and the axes of rotation at the connections between the lower robotic arm and the upper robotic arm, and between the upper robotic arm and the upper robotic arm connector are all parallel to the axis of rotation at the connection between the lower robotic arm and the climber; the axis of rotation at the connection between the screen interface and the upper robotic arm connector is perpendicular to the axis of rotation at the connection between the upper robotic arm and the upper robotic arm connector. That is, the upper robotic arm connector, the upper robotic arm, the lower robotic arm, and the climber form a four-bar mechanism in the same horizontal plane.

[0111] Based on the above display and the above lifting table, the present invention also provides another lifting table, which includes the above display stand. In this embodiment, in addition to being able to be lifted and lowered in cooperation with the lifting table to adapt to users of different heights, the display stand can also adapt to changes in different sitting postures or standing postures of users by controlling the extension or telescoping between the upper robotic arm and the lower robotic arm. That is, multi-dimensional adjustment is realized.

[0112] Embodiment 5: The present invention also provides a desk integrated with a table and chair, which includes the lifting table and chair in Embodiment 1 of the present invention and the movable display stand in Embodiment 3 or 4. Refer to Figure 1 , the display stand 1 is slidably fitted on the panel through the guide rail at the bottom and the slider on the upper panel of the lifting table 2.

[0113] Furthermore, a camera module 2106 is also arranged on the display stand for acquiring the posture image data of the user. Correspondingly, the main controller 2308 in the lifting table 2 performs posture type recognition according to the image data, and then controls the lifting table, the lifting chair, and / or the display stand according to the recognized posture type.

[0114] Based on the above desk, the present invention provides a control method for a desk. Refer to Figure 18 , specifically, the method includes the steps:

[0115] S101: Monitor in real time whether the user is in a sedentary state; if the user is in a sedentary state, execute step S102; if the user is not in a sedentary state, no operation is performed.

[0116] In some embodiments, pressure data (including pressure values and / or pressure distributions, etc.) is collected in real time by the first pressure sensor 2303 provided on the base 23 and / or the second pressure sensor 3102 on the lift chair, and the main controller determines whether the user is in a sitting position based on the pressure data, and compares the duration of the user in the sitting position with a preset duration threshold (for example, 30 min). If the preset duration threshold is reached, it is determined that the user is in a sedentary state and thus intervention is required. If the preset duration threshold is not reached, it is not a sedentary state and naturally no intervention is needed.

[0117] S102 Control the lift table and the lift chair to both rise synchronously by a first height H1 at a first speed V1, so that without interrupting the user's work task, the user can switch from a sitting position to a semi-sitting position, and then execute step S103.

[0118] S103 After switching to the semi-sitting position, determine whether the user's height exceeds a preset standard height threshold; if not, execute step S104, and if so, execute step S105.

[0119] S104 Control the lift table and the lift chair to both rise synchronously by a second height H2 at a second speed V2, and then control the lift table to continue rising by a third height H3 at a third speed V3, so that the user switches from the semi-sitting position to a standing position.

[0120] S105 Control the lift table and the lift chair to both rise synchronously by a second height H2 at a second speed V2, and then control the lift table to continue rising by a third height H3 at a third speed V3, and at the same time control the monitor bracket to rise by a fourth height H4 at a fourth speed V4, so that the user switches from the semi-sitting position to a standing position. Of course, it is also possible to directly control the lift table and the lift chair to both rise synchronously by a second height H2 at a second speed V2, and then control the lift table to continue rising by a fifth height H5 at a third speed V3, so that the user switches from the semi-sitting position to a standing position.

[0121] That is, the control method of this embodiment is the same in principle as the control method of the above-mentioned second embodiment. The difference is that the control method in this embodiment also cooperates by controlling the monitor bracket. In some embodiments, the value ranges of the first speed V1 and the second speed V2 are: 2.5 mm / s - 3.8 mm / s; the value ranges of the third speed V3 and the fourth speed V4 are: 3.8 mm / s - 8 mm / s.

[0122] In some embodiments, since the user hardly needs to actively participate during the process of switching from a sitting position to a semi-sitting position, while during the process of switching from a semi-sitting position to a standing position, especially after the lifting chair reaches its maximum height (at this time, the lifting table continues to rise), the user needs to be somewhat involved. That is, the process from a sitting position to a semi-sitting position is almost completely passive and the lifting speed is controllable. While from a semi-sitting position to a standing position, especially in the second half (i.e., after the lifting chair rises to its maximum height), the lifting speed of the lifting table actually needs to take into account the speed of the user during the standing process. Therefore, in order to achieve a change in the sitting position or reduce the risk of being detected, especially reduce the risk of being detected during the process from a sitting position to a semi-sitting position, the first speed V1 of the lifting table and the lifting chair during the process is less than the second speed V2 from a semi-sitting position to a standing position, and the second speed V2 ≤ the third speed V3. Preferably, the first speed V1 = 2.5 mm / s and the second speed V2 = 3 mm / s.

[0123] As mentioned above, since the lifting height of the lifting table and the lifting height of the lifting chair are usually set based on the average height. However, for some users whose height is much higher than the average height, when standing in front of the lifting table in a standing position, when looking straight ahead, they may not be able to maintain within the above-mentioned optimal line of sight range. Therefore, in order to accommodate more users, in this embodiment, when it is recognized that the user's height exceeds the standard height threshold (for example, the average height), but is less than or equal to the preset height threshold (> the standard height threshold), during the process from a semi-sitting position to a standing position, when only the lifting chair reaches its maximum height, only control the lifting table to continue to lift; and when it is recognized that the user's height is greater than the preset height threshold (for example, the standard height threshold + 10 cm), during the process from a semi-sitting position to a standing position, also control the monitor bracket to rise at the same time, or when only the lifting chair reaches its maximum height, control the monitor bracket and the lifting table to rise. Compared with the method of only matching the height through the lifting table, controlling the coordinated lifting of the lifting table and the monitor can reduce the power consumption of the power device in the lifting table.

[0124] In some other embodiments, when it is determined that the user's height exceeds the preset height threshold; control the lifting table and the lifting chair to rise synchronously at the second speed V2 by the second height H2, and then control the lifting table to continue to rise at the third speed V3 by the sixth height H6, while controlling the monitor bracket to rise at the fourth speed V4 by the seventh height H7, so that the user switches from a semi-sitting position to a standing position. Of course, it is also possible to control the lifting table and the lifting chair to rise synchronously at the second speed V2 by the second height H2, and then control the lifting table to continue to rise at the third speed V3 by the eighth height H8, so that the user switches from a semi-sitting position to a standing position. Wherein, H8 = H6 + H7 > H5. If it does not exceed the preset height threshold, control the coordinated lifting of the lifting chair and the monitor in accordance with the average height threshold method.

[0125] Preferably, when controlling the lifting of the monitor bracket, first control the climber of the monitor bracket to ascend along the climbing rod by a fourth height or a sixth height. Of course, if the current position of the climber on the climbing rod (specifically, the position of the climber can be determined according to the historical rotation data of its power mechanism) is already relatively close to the top of the climbing rod, it may prevent climbing. Therefore, the power device inside the upper robotic arm and / or the lower robotic arm can be controlled to rotate, so as to adjust the height of the monitor through the upper and lower robotic arms.

[0126] As mentioned above, in order to minimize the user's perception, the speed of the lifting process is very slow. Therefore, if the intervention is carried out after detecting that the user is in a sedentary state, there will be a certain lag. Thus, in this embodiment, the preset duration threshold T is adjusted based on the preset early trigger time interval t, so as to enable possible early intervention. Specifically, when the actual duration of the user in the sitting position is obtained in real time, it is determined whether the actual duration is greater than or equal to the preset duration threshold. The preset duration threshold T = default duration threshold T0 - preset early trigger time interval t; if the actual duration is greater than or equal to the preset duration threshold, it is determined that the user is about to enter a sedentary state, and the lifting table and the lifting chair are controlled to lift and lower synchronously, that is, step S102 is executed. Moreover, precisely because the lifting process is not easily perceptible to the user, early intervention can be carried out, thereby achieving the prevention of sedentary behavior. Further, the early trigger time interval t is the time required for the lifting chair to switch from the sitting position to the semi-sitting position at the first speed V1.

[0127] Further, when the user is in the sitting or standing position, changes in the sitting or standing posture may occur during their work process. For example, the sitting posture may lean forward, backward, to the right, or to the left. Similarly, when standing, it may also lean forward, backward, to the right, or to the left. This will cause the user's line of sight center to shift and not be between 15° - 20° below the horizontal line of sight. Therefore, it is also necessary to continuously monitor the user's posture information or standing posture information. If a change occurs, corresponding adjustments are required.

[0128] Specifically, modules such as camera devices provided on the lifting table or the monitor bracket are used to continuously monitor the user's posture information, and then the main controller performs sitting posture recognition and judgment. If the posture information is recognized as a standard sitting posture leaning forward, the rear cover is controlled to move backward a corresponding distance on the base according to the forward lean distance, so that the user's line of sight center is between 15° - 20° below the horizontal line of sight; or, if the posture information is a standard sitting posture leaning backward, the sixth power mechanism is controlled to drive the rear cover to move forward a corresponding distance on the base according to the backward lean distance; or, if the posture information is a standard sitting posture leaning to the left or a standard sitting posture leaning to the right, the upper robotic arm connector is controlled to rotate according to the left lean distance.

[0129] Similarly, modules such as camera devices set on the lifting table or the monitor stand are used to monitor the user's standing posture information in real time. Then, the main controller performs standing posture recognition and judgment. If the standing posture information is a standard backward-leaning posture, the upper robotic arm and the lower robotic arm are controlled to expand according to the backward-leaning distance, so that the monitor moves a corresponding distance in the direction close to the user, but the height remains unchanged, so that the user's line of sight center is 15°-20° below the horizontal line of sight; or, if the standing posture information is a standard left-leaning posture or a standard right-leaning posture, the upper robotic arm connector is controlled to rotate left and right according to the left-leaning distance.

[0130] In the actual application process, since the lifting table and the lifting chair each adopt corresponding drive mechanisms, it is inevitable that due to errors or long-term use and wear, the lifting speeds of the two cannot be truly synchronized (that is, the speed difference between the two is less than the preset speed difference threshold). This will increase the risk perceived by the user during the lifting process, especially during the process from the sitting posture to the semi-sitting posture. Therefore, further, in order to reduce this risk, the method of this embodiment monitors the actual speeds of the lifting table and the lifting chair in real time during the process of controlling the synchronous ascent of the lifting table and the lifting chair; and judges whether the difference between the actual speeds of the two is greater than or equal to the preset first speed difference threshold; if the difference between the actual speeds of the two is greater than or equal to the first speed difference threshold, control the lifting table and the lifting chair to stop ascending; if the difference between the actual speeds of the two is less than the first speed difference threshold, judge whether the difference between the actual speeds of the two is less than the preset second speed difference threshold and greater than the preset third speed difference threshold; if the difference between the actual speeds of the two is less than the first speed difference threshold and greater than or equal to the second speed difference threshold, based on the one with the lowest speed of the two, adjust the speed of the other so that the speed difference between the two is less than the preset speed difference threshold; if the difference between the actual speeds of the two is less than the second speed difference threshold and greater than the first speed difference threshold, give a warning prompt to the user due to the speed difference between the two.

[0131] Further, in order to prevent the lifting chair from interfering with the user's conversion from the semi-sitting posture to the standing posture, in this embodiment, when the lifting chair ascends by H1 + H2, that is, when it ascends to the maximum height, control the lifting chair to move backward a preset distance. Of course, if the user needs to switch from the standing posture to the sitting posture, the user can control the lifting chair to approach through the rocker controller and the like in the above embodiment, so as to facilitate the user to sit down.

[0132] Furthermore, different users have different sensitivities to lifting. For example, generally speaking, for a lifting speed of 3 mm / s, most users will not notice it. However, for some users with high sensitivity (such as those with sensitive vestibules or certain lumbar spine injuries), they may actually notice it. Therefore, it is necessary to control the synchronous lifting speed of the lifting table and the lifting chair in combination with the sensitivities of different users (especially the first speed V1 completely controlled by the driving mechanism during the process of switching from a sitting position to a semi-sitting position), so as to adapt to the individualization of users. Specifically, before or after the step of the method in this embodiment for real-time monitoring whether the user is in a sedentary state (that is, before or after performing step S101), the method further includes the steps:

[0133] Obtain the type of the user, and the type includes: ultra-sensitive users, sensitive users, and non-sensitive users.

[0134] Match the corresponding lifting speed in the database based on the type of the user.

[0135] If the user is an ultra-sensitive user, the lifting speed matched in the database is 2.5 mm / s - 3 mm / s.

[0136] If the user is a sensitive user, the lifting speed matched in the database is 3 mm / s - 3.8 mm / s.

[0137] If the user is a non-sensitive user, the lifting speed matched in the database is 3.8 mm / s - 8 mm / s.

[0138] Specifically, the user can set the user type by himself / herself when using the product for the first time. Or, at the first use, let the user perform a corresponding sensitivity test (the sensitivity test of the user to the lifting movement is a prior art and will not be elaborated here). Of course, if the user type is set by the user himself / herself, correspondingly, it can also be corrected based on the test results.

[0139] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Without further limitations, an element defined by the statement "including a..." does not exclude the existence of another identical element in the process, method, article or device including that element.

[0140] Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions for causing a computer terminal (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in various embodiments of the present invention.

[0141] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the purpose of the present invention and the scope protected by the claims. All of these are within the protection scope of the present invention.

Claims

1. A control method for a desk with integrated table and chair, characterized in that, Including the steps: Real-time monitor whether the user is currently in a sedentary state; If currently in a sedentary state, control the height-adjustable desk and the height-adjustable chair of the desk to rise synchronously by a first height H1 at a first speed V1, so as to switch from a sitting position to a semi-sitting position; and After switching to the semi-sitting position, determine whether the user's height exceeds a preset standard height threshold; If it does not exceed the standard height threshold, control the height-adjustable desk and the height-adjustable chair to rise synchronously by a second height H2 at a second speed V2, and then control the height-adjustable desk to continue rising by a third height H3 at a third speed V3, so that the user switches from the semi-sitting position to a standing position; If it exceeds the standard height threshold, control the height-adjustable desk and the height-adjustable chair to rise synchronously by a second height H2 at a second speed V2, and then control the height-adjustable desk to continue rising by a third height H3 at a third speed V3. At the same time, control the monitor bracket on the desk to rise by a fourth height H4 at a fourth speed V4, so that the user switches from the semi-sitting position to a standing position; or, control the height-adjustable desk and the height-adjustable chair to rise synchronously by a second height H2 at a second speed V2, and then control the height-adjustable desk to continue rising by a fifth height H5 at a third speed V3, so that the user switches from the semi-sitting position to a standing position; Wherein, the value range of the first speed V1 and the second speed V2 is: 2.5mm / s - 3.5mm / s; the value range of the third speed V3 and the fourth speed V4 is: 3.5mm / s - 8mm / s; Wherein, the step of real-time monitoring whether the user is in a sedentary state specifically includes: Real-time obtain the actual duration of the user in the sitting position; Judge whether the actual duration is greater than or equal to the default duration threshold T0; If the actual duration is greater than or equal to the default duration threshold T0, determine that the user is in a sedentary state, and control the height-adjustable desk and the height-adjustable seat to rise and fall synchronously to switch from the sitting position to the semi-sitting position.

2. The control method of an integrated desk and chair desk according to claim 1, characterized in that, It also includes the steps: Judge whether the actual duration is greater than or equal to a preset duration threshold, and the preset duration threshold = default duration threshold T0 - preset early trigger time interval t; If the actual duration is greater than or equal to the preset duration threshold, determine that the user is about to enter a sedentary state, and control the height-adjustable desk and the height-adjustable seat to rise and fall synchronously to switch from the sitting position to the semi-sitting position.

3. The control method of an integrated desk and chair desk according to claim 2, characterized in that, The early trigger time interval t is the duration required for the height-adjustable desk to rise synchronously by the second height H2 at the second speed V2.

4. The control method of an integrated desk and chair desk according to any one of claims 1-3, characterized in that, It also includes the steps: Real-time monitor the user's posture, If the posture is a standard sitting position with forward inclination, control the monitor bracket on the desk to move backward by a corresponding distance according to the forward inclination distance; or, If the posture is a standard sitting position with backward inclination, control the monitor bracket on the desk to move forward by a corresponding distance according to the backward inclination distance; or, If the posture is a standard sitting position with left inclination or right inclination, control the monitor bracket on the desk to rotate left and right.

5. The control method of a desk with integrated table and chair according to claim 1, characterized in that, It also includes the steps: During the process of controlling the height-adjustable desk and the height-adjustable chair to rise synchronously, real-time monitor the actual speeds of the height-adjustable desk and the height-adjustable chair; Judge whether the difference between the actual speeds of the two is greater than or equal to a preset first speed difference threshold; If the difference between the actual speeds of the two is greater than or equal to the first speed difference threshold, control the lifting table and the lifting chair to stop rising; If the difference between the actual speeds of the two is less than the first speed difference threshold, determine whether the difference between the actual speeds of the two is less than a preset second speed difference threshold and greater than or equal to a preset third speed difference threshold; If the difference between the actual speeds of the two is less than the first speed difference threshold and greater than or equal to the second speed difference threshold, taking the one with the lowest speed of the two as the reference, adjust the speed of the other so that the speed difference between the two is less than the preset speed difference threshold; If the difference between the actual speeds of the two is less than the second speed difference threshold and greater than the third speed difference threshold, give a warning to indicate that the risk perceived by the user due to the speed difference between the two increases.

6. The control method of an integrated desk and chair desk according to claim 1, wherein It further includes the step of: when the lifting chair rises to the second height H2, control the lifting chair to move backward a preset distance.

7. The control method of an integrated desk and chair desk according to claim 1, characterized in that, Before the step of continuously monitoring whether the user is in a sedentary state in real time, it further includes the step of: Obtain the user type of the user, and the user type includes hypersensitive users, sensitive users, and non-sensitive users; Match the corresponding lifting speed in the database based on the user type: If it is a hypersensitive user, the lifting speed matched in the database is 2.5 mm / s - 3 mm / s; If it is a sensitive user, the lifting speed matched in the database is 3 mm / s - 3.8 mm / s; If it is a non-sensitive user, the lifting speed matched in the database is 3.8 mm / s - 8 mm / s.

8. The control method of an integrated desk and chair desk according to claim 1, characterized in that When it is determined that the height of the user exceeds the preset standard height threshold, it further includes the step of: Determine whether the height of the user exceeds the preset height threshold, and the preset height threshold > the standard height threshold; If it exceeds, control the lifting table and the lifting chair to rise synchronously to the second height H2 at the second speed V2, and then control the lifting table to continue to rise to the sixth height H6 at the third speed V3, and at the same time control the monitor bracket to rise to the seventh height H7 at the fourth speed V4, so that the user switches from a semi-sitting position to a standing position; or, control the lifting table and the lifting chair to rise synchronously to the second height H2 at the second speed V2, and then control the lifting table to continue to rise to the eighth height H8 at the third speed V3, so that the user switches from a semi-sitting position to a standing position; where, H6 + H7 = H8 > H5.

9. The control method of an integrated desk and chair desk according to claim 8, characterized in that, The sixth height H6 > the fourth height H4.

10. The control method of a desk with integrated table and chair according to claim 1, characterized in that, The step of controlling the monitor bracket to rise to the sixth height H6 at the fourth speed V4 specifically includes: Determine whether the current position of the climber of the monitor bracket is at the bottom of the climbing rod of the monitor bracket. If so, control the climber to climb along the climbing rod at the fourth speed V4; otherwise, control the upper robotic arm and / or the lower robotic arm in the monitor bracket to drive the screen interface to rise to the sixth height H6.

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