Lifting table and chair

Abstract

The invention provides a lifting table and chair which comprises a base, a lifting arm installed on the base, a panel connected with the lifting arm, a supporting module movably connected with the base and a horizontal moving mechanism arranged between the base and the supporting module, and one end of the lifting arm is connected with a first driving device of the base so that the lifting arm can drive the panel to move up and down; the horizontal moving mechanism comprises a second driving device and a telescopic rod connected with the second driving device, and the tail end of the telescopic rod is connected with the supporting module; the supporting module comprises a supporting plate, a lifting device and a supporting base which are connected in sequence; wherein the lifting device is provided with a third driving device, and the supporting base is connected with the telescopic rod; and a pressure sensor and a main controller are arranged in the base.

Description

Technical Field

[0001] The present invention relates to the technical field of furniture manufacturing, and specifically provides a lifting 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, text editors, 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 of 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, 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, 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 that Chinese Utility Model Patent CN203897754U discloses a combined lifting table and chair, including a box body, a symmetrically arranged driving mechanism and a supporting mechanism for supporting a footrest for lifting a seat mechanism and a table top mechanism arranged in the box body; 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 drives a connecting rod through a controller to control a driving motor a to drive the seat mechanism and the table top mechanism to move relatively, so as to form the lifting and lowering of the seat mechanism and the table top mechanism; the supporting mechanism controls a driving motor c through the controller to drive the supporting mechanism to complete automatic lifting; a push rod controls a driving motor b through the controller to drive the footrest to complete the lifting action.

[0006] It can be seen that most automatic height-adjustable desks and chairs are mainly adjusted by the user actively, enabling the desks and chairs to adjust their heights, etc. However, since the adjustment is initiated by the user actively, the user'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 reluctant to change their behavior for fear of affecting the current task. For example, users need to distract themselves 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 the user's independent adjustment. Summary of the Invention

[0007] An object of the present invention is to provide a height-adjustable desk and chair to partially solve or alleviate the above deficiencies in the prior art. By identifying whether the user is in a sedentary state according to the real-time monitored pressure data, and when it is identified that the user enters the sedentary state, automatically control the desk and the chair to lift and lower synchronously to achieve passive change of the user's sitting posture. And on the one hand, control the transition from the sitting posture to the semi-sitting posture gradually, and then from the semi-sitting posture to the standing posture. On the other hand, control the lifting and lowering speed of the desk and chair in stages, so as to minimize the interruption of the user's work task or reduce the risk of being interrupted.

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

[0009] The present invention provides a lifting desk and chair, which includes: a base, a lifting arm installed on the base, a panel located at the top end of the lifting arm, a support module provided on the base, and a horizontal movement mechanism provided between the base and the support module. Wherein, one end of the lifting arm is connected to a first driving device in the base, and driven by the first driving device, the lifting arm drives the panel to move up and down relative to the base; the horizontal movement mechanism includes: a second driving device provided on the base, and a telescopic rod connected to the second driving device, and the end of the telescopic rod is connected to the support module; the support module includes: a support plate, a lifter, a support base connected in sequence, and a third driving device provided on the support base for driving the lifter, and the support base is connected to the end of the telescopic rod; a pressure sensor and a main controller are provided in the base, wherein the main controller is used to judge whether the user is currently in a sedentary state according to the pressure data collected by the pressure sensor. If it is recognized that the user is currently in a sedentary state, it controls the lifting arm and the lifter to move up or down simultaneously; specifically, the controller controls the lifting desk and the lifting chair to rise synchronously by a first height H1 at a first speed V1, so that the user switches from a sitting position to a semi-sitting position; and after switching to the semi-sitting position, it judges whether the user's height exceeds a preset standard height threshold; if not, it controls the lifting desk and the lifting chair to rise synchronously by a second height H2 at a second speed V2, and then controls the lifting desk to continue to rise 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, it controls the lifting desk and the lifting chair to rise synchronously by a second height H2 at a second speed V2, and then controls the lifting desk to continue to rise 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 ranges of the first speed V1 and the second speed V2 are: 2.5 mm / s - 3.5 mm / s, and the value range of the third speed V3 is: 3.5 mm / s - 8 mm / s.

[0010] In some embodiments, the lifting arm includes: a lifting screw, a first outer shell of the lifting arm connected to the bottom of the panel, and a second outer shell of the lifting arm connected to the base. The lifting screw is arranged in the first outer shell of the lifting arm. One end of the lifting screw is connected to the first driving device, and the other end is threadedly connected to the first outer shell of the lifting arm. Driven by the first driving device, the lifting screw rotates, so that the first outer shell of the lifting arm moves up and down relative to the second outer shell of the lifting arm.

[0011] In some embodiments, the bottom plate includes a base, an intermediate bottom plate, and a bottom plate housing that are sequentially covered. The telescopic rod is disposed on the intermediate bottom plate. A telescopic groove is provided on the bottom plate housing. The bottom of the support base penetrates through the telescopic groove and enters the interior of the bottom plate housing to be connected to the end of the telescopic rod.

[0012] In some embodiments, the controller is further configured to determine whether the user is in a sitting position according to the pressure data collected by the pressure sensor. When it is determined that the user is in a sitting position, the controller determines whether the duration of the user's sitting position is greater than or equal to a preset duration threshold. If it is greater than or equal to the preset duration threshold, it is determined that the user is in a sedentary state, and the lifting arm and the lifter are controlled to move upward or downward simultaneously; if it is less than the preset duration threshold, it is determined that the user is not in a sedentary state; wherein, the preset duration threshold is a default duration threshold T0; or, the controller is further configured to determine whether the user is in a sitting position according to the pressure data collected by the pressure sensor. When it is determined that the user is in a sitting position, the controller determines whether the duration of the user's sitting position is greater than or equal to a preset duration threshold. If it is greater than or equal to the preset duration threshold, the lifting arm and the lifter are controlled to move upward or downward simultaneously; wherein, the preset duration threshold T = default duration threshold T0 - advance trigger time interval t.

[0013] In some embodiments, the controller is further configured to obtain the user type of the user and match a corresponding lifting speed in the database according to the user type; if the user is a hypersensitive user, the first speed matched is 2.5 mm / s - 3 mm / s; if the user is a sensitive user, the first speed matched in the database is 3 mm / s - 3.8 mm / s; if the user is a non-sensitive user, the lifting speed matched in the database is 3.8 mm / s - 8 mm / s.

[0014] In some embodiments, the lifter includes: an upper lifter rotatably connected to the support plate, and a lower lifter rotatably connected to the support bottom plate; the upper lifter includes: an upper lifter housing, and an internal thread sleeve disposed inside the upper lifter; the lower lifter includes: a lower lifter housing, and a screw disposed inside the lower lifter; wherein, the screw is threadedly connected to the internal thread sleeve. Driven by a third driving device, the screw rotates relative to the internal thread sleeve, so that the upper lifter moves up and down relative to the lower lifter.

[0015] In some embodiments, the upper lifter is provided with a rotating shaft, and a shaft hole is provided at the bottom of the support plate. The upper lifter and the support plate are rotatably connected through the shaft hole and the rotating shaft. The extending direction of the rotating shaft is perpendicular to the lifting direction of the lift chair and perpendicular to the moving direction of the lift chair.

[0016] In some embodiments, the support base includes: a mounting plate, a base connection portion is provided at the lower part of the mounting plate, an electric telescopic rod is provided on the mounting plate, and two ends of the telescopic rod are respectively rotatably connected to the mounting plate and the screw rod.

[0017] In some embodiments, a rocker controller is provided on the panel. In some embodiments, a wireless charging port is provided on the panel.

[0018] Beneficial effects: (1) In the present invention, by separately providing lifting mechanisms for the lifting table and the lifting chair, and setting up a monitor bracket that can be adjusted in multiple dimensions, the lifting table and the lifting chair are lifted and lowered synchronously under the drive of 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 lifting and lowering the table and chair is controlled as low as possible, thereby reducing the risk of being noticed 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 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 monitor and the user are almost lifted and lowered synchronously or the speed difference is not large. Thus, even if the user notices, it will not interrupt their work. (3) In order to adapt to users of different heights, a monitor bracket that can be adjusted in multiple dimensions is set up, so that it can adapt to users of different heights through the coordinated cooperation of the three. Moreover, a multi-stage lifting structure is formed between the climbing rod and the upper and lower robotic arms of the monitor 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 monitor bracket is movable, and the monitor 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 the user from entering a long sitting state. Further, the lifting and lowering speed is separately controlled according to the user's sensitivity to the lifting movement, so as to further reduce the risk of being noticed 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 monitor bracket, and setting a rocker or a rocker controller (the working principle is prior art and will not be elaborated here), the user can manually control the monitor 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.Moreover, a gear set and a wire-pulling transmission structure are provided in the upper and lower robotic arms. That is, the gear set is used to amplify the torque and rotational speed, enabling the use of a low-power motor. At the same time, a wire is set to transmit the pulling force to achieve flexible transmission and realize the rotation of the robotic arm. Compared with the direct use of a motor to drive the rotation, the requirement for the motor power is lower. With a low requirement for the motor power, a small-sized motor can be used, which can thus be housed inside the robotic arm. This makes it easier to achieve the lightweight design of the monitor stand and makes the overall structure appearance more concise and simple. If a direct motor is used to drive each rotating connection point, the motor needs to be externally placed at one end of the rotating shaft. This not only makes the overall structure appearance of the monitor stand heavy and unaesthetic, but also causes the monitor stand to become unbalanced due to the self-weight of multiple motors when the monitor adjusts the angle. (6) The present invention uses a camera device provided on the lifting table or the monitor stand to monitor the user's posture information in real time, and then the main controller performs posture recognition and judgment and makes corresponding controls according to the recognition results. For example, if the recognized posture is a standard sitting posture with forward inclination, and according to the forward inclination distance, the rear cover is controlled to move backward a corresponding distance on the base, so that the user's line of sight center is as close as possible to or remains below the horizontal line of sight by 15° - 20°; or, if the posture is a standard sitting posture with backward inclination, and according to the backward inclination distance, the rear cover is controlled to move forward a corresponding distance on the base, so that the user's line of sight center is as close as possible to or remains below the horizontal line of sight by 15° - 20°; or, if the posture is a standard sitting posture with left inclination or a standard sitting posture with right inclination, and according to the left inclination distance, the upper robotic arm connector is controlled to rotate, thereby reducing the deviation degree of the user's line of sight. (7) During the process of controlling the synchronous upward movement of the lifting table and the lifting chair, the control method provided by the present invention monitors the actual speeds of the lifting table and the lifting chair in real time; and judges whether the difference between the two actual speeds is greater than or equal to a preset first speed difference threshold; if the difference between the two actual speeds 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 two actual speeds is less than the first speed difference threshold, it is judged whether the difference between the two actual speeds is less than a preset second speed difference threshold and greater than a preset third speed difference threshold; if the difference between the two actual speeds 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 speed of the other is adjusted so that the speed difference between the two is less than the preset speed difference threshold. That is, by monitoring the speed difference during the synchronous lifting process of the lifting table and the lifting chair and adjusting the speed according to this speed difference, the risk of being perceived by the user due to a large difference in the speeds of the two is avoided or reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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 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.

[0020] 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;

[0021] 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; 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 desk panel; Figure 10 Schematic diagram of the internal structure of the lifting arm of the lifting desk; Figure 11 Schematic diagram of the internal structure of the base of the lifting desk; 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 diagram of the user from the sitting posture to the semi-sitting posture and then from the semi-sitting posture to the standing posture.

[0022] 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

[0023] 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.

[0024] In this document, suffixes such as "module", "component", or "unit" used to represent elements are only for facilitating the description of the present invention and have no specific meaning in themselves. Therefore, "module", "component", or "unit" can be used interchangeably. In this document, terms such as "upper", "lower", "inner", "outer", "front", "rear", "one end", "the other end", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for facilitating the description of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to 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. In this document, unless otherwise clearly specified and defined, 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 can be the communication inside two elements. 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. In this document, "and / or" includes any and all combinations of one or more of the listed related items. In this document, "a plurality" means two or more, that is, it includes two, three, four, five, etc.

[0025] For the convenience of description, in this document, taking Figure 1 as an example, the height direction (or vertical direction, i.e., the lifting direction) of a desk is taken as the Y-axis, the width direction of the desktop is taken as the X-axis, and the length direction of the desktop (i.e., the moving direction of the lifting chair) is taken as the Z-axis to establish a coordinate system. The descriptions of the directions in the subsequent embodiments are all referenced to this coordinate system.

[0026] Embodiment 1: Refer to Figure 1 and Figure 7 , the present invention provides a desk with an 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 moving 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 moving mechanism drives the lifting chair 3 to move back and forth on the base 23.

[0027] Refer to Figure 9 and Figure 10, in some embodiments, the lifting arm 22 includes: a lifting screw 2202, a first lifting arm housing 2201 connected to the bottom of the panel 21, and a second lifting arm housing 2203 connected to the base 21. The lifting screw 2202 is disposed within the second lifting arm housing 2203, and its top end is threadedly connected to the internal thread within the first lifting arm housing 2201. The bottom end of the lifting screw 2202 is connected to the output shaft of a first driving device 2301 (e.g., a motor) on the base 23. When the first driving device 2301 rotates, the lifting screw 2202 rotates relative to the first lifting arm housing 2201, thereby driving the first lifting arm housing 2201 to move up and down relative to the second lifting arm housing 2203.

[0028] See Figure 11 , in some embodiments, the base plate 23 includes a base plate base 2307, a base plate intermediate plate 2305, and a base plate housing 2302 that are sequentially covered from top to bottom; the base plate base 2307 ensures the firmness and anti-slip property when the device is placed on the ground, and the base 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 base plate housing 2302 is then covered on the base plate intermediate plate 2305.

[0029] See Figure 11 , preferably, a first pressure sensor 2303 and a main controller 2308 are provided on the base 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 (e.g., 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 upward simultaneously to achieve the switch from a sitting position to a standing position, thereby realizing sedentary intervention.

[0030] In some embodiments, the base plate housing 2302 is fitted and connected to the second lifting arm housing 2203.

[0031] In some embodiments, the above 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 base plate housing 2302 is provided with a moving groove, and the bottom of the lifting chair 3 is connected to the telescopic rod 2306 through the moving groove. Further, the telescopic rod 2306 is provided with a telescopic cover 2304, and 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.

[0032] See Figure 12, in some embodiments, the lift chair 3 includes: a support plate 31, a lifter, and a support base 34 connected in sequence; wherein, 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 in the base 23.

[0033] 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; wherein, the upper lifter 32 includes: an upper lifter housing 3202, and an internal thread sleeve 3203 disposed inside the upper lifter 32; the lower lifter 33 includes: a lower lifter housing 3302, and a screw rod 3301 disposed inside the lower lifter 33; wherein, 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 lift chair 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 the jamming or pausing feeling during the lifting process caused by the wear of each component after a long time of use when using hydraulic cylinders or air cylinders to realize the lifting, thereby further reducing the risk of being detected by the user. And, the lifting arm of the lift table also adopts the same lifting method, so that it is easier to control the synchronization of the two.

[0034] 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 rotatably connected through the shaft hole 3104 and the rotating shaft. By rotatably connecting the support plate 31 and the upper lifter 32, the user can adjust his sitting posture by himself. For example, lean forward or backward along the Z-axis direction. Of course, further, a corresponding power mechanism may 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 the forward or backward tilt along the Z-axis direction.

[0035] In some embodiments, the support base 34 includes: a mounting plate 3406, a base connection portion 3405 is provided at the lower part of the mounting plate 3406, the base connection portion 3405 is connected to the telescopic rod 2306 of the base 23, and an electric telescopic rod 3402 is provided at the upper part of the mounting plate 3406, and the two ends of the electric telescopic rod 3402 are respectively connected to the mounting plate 3406 and the screw 3301. The electric telescopic rod 3402 drives the screw 3301 to tilt forward and backward, thereby realizing the adjustment of the front and rear tilt angle of the lifting chair 3. Compared with the method of setting a rotating shaft at the bottom of the support plate 31, this method can achieve a larger tilt angle, that is, to achieve the adjustment of the secondary tilt angle.

[0036] In some embodiments, a base soft shell 3401 and a base front soft shell 3404 are provided on the outside of the support base 34 to prevent the mechanical structure from being exposed when the chair is tilted forward or backward, and to avoid safety hazards such as liquid penetration.

[0037] In some embodiments, a joystick controller 2102 (similar to a remote control) is provided on the panel 21, which uses sensing technology to sense the user's intention, so that the user can manually control the lifting of the lifting table 2 or the lifting chair 3, or the left and right tilt or front and back tilt of the lifting chair 3 (for example, by controlling the electric telescopic rod) through the joystick controller 2102.

[0038] 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.

[0039] Specifically, by monitoring the user's sitting posture in real time, once it is recognized that the user is in a sedentary state, the lifting desk 2 and the lifting chair 3 are simultaneously controlled to lift and lower at a very slow speed (for example, within the range of 2.5 mm / s - 3.8 mm / s obtained from double-blind perception experiments, which is not easily perceptible to the user. Among them, the probability of being perceived at 2.5 mm / s is 5%; while the probability of being perceived by the user at 3.8 mm / s is 18%) to synchronously lift and lower, so as to gradually transition from a sitting posture to a semi-sitting posture, and then from the semi-sitting posture to a standing posture. Especially during the process from the sitting posture to the semi-sitting posture, the lifting desk and the lifting chair lift and lower synchronously at almost the same or very close speed, and the speed is very slow, so that in a state of highly concentrated attention, the user is not easily aware of the lifting and lowering of the desks and chairs, but their sitting posture changes during the lifting and lowering process. That is to say, it hardly interrupts the user's work tasks, or rarely interrupts the user's work tasks (for example, users who are very sensitive to the lifting and lowering process). Of course, the desks and chairs can also be controlled to lift and lower periodically. For example, the active desks and chairs are controlled to lift and lower every 30 minutes to achieve the transition from a sitting posture to a semi-sitting posture, and then from the semi-sitting posture to a standing posture.

[0040] Furthermore, since the lifting speed of the lifting desk 2 and the lifting chair 3 is very slow, if the intervention is carried out after monitoring that the user is in a sedentary state, there will be a certain lag. Therefore, a periodic adjustment method can be adopted. For example, usually 30 minutes is considered sedentary. Correspondingly, in order to prevent the user from reaching a sedentary state and to intervene in advance, for example, the intervention is carried out at 29 minutes.

[0041] 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 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 transition from a sitting posture to a semi-sitting posture.

[0042] 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: S101 monitors in real time whether the user is in a sedentary state; if the user is in a sedentary state, step S102 is executed; if the user is not in a sedentary state, no operation is performed.

[0043] In some embodiments, the first pressure sensor 2303 disposed on the base 23 of the lifting table 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 position based on the pressure data collected in real time (this is prior art and will not be elaborated here; of course, the image data collected in real time by the camera module 2106 disposed on the panel 21 can also be utilized or combined to determine whether the user is in a sitting position), 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, 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, both the pressure sensor and the camera module are wirelessly connected to the main controller.

[0044] S102 Control the lifting table 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 switch from a sitting position to a semi-sitting position, and then execute step S103. In this embodiment, "without interrupting" 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 desks and chairs is within a suitable range, the user can still continue the work task.

[0045] 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, if so, execute step S105. Since the lifting heights of the lifting table and the lifting chair can be known in advance, therefore, based on the user's height and the heights of the desks and chairs in the sitting position, the rising height required for the user to switch from the sitting position to the semi-sitting position can be automatically calculated. Therefore, when the rising height is reached, the main controller can know that the current semi-sitting position is reached. Of course, in some other embodiments, a specified height can also be directly set as the semi-sitting position.

[0046] S104 Control the lifting table and the lifting chair to both rise synchronously by a second height H2 at a second speed V2, and then control the lifting table to continue to rise by a third height H3 at a third speed V3, so that the user switches from the semi-sitting position to the standing position.

[0047] S105 Control the lifting table and the lifting chair to both rise synchronously by a second height H2 at a second speed V2, and then control the lifting table to continue to rise by a fifth height H5 at a third speed V3, so that the user switches from the semi-sitting position to the standing position.

[0048] 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.

[0049] In some embodiments, during the process of a 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 the semi-sitting position to the standing position, especially after the lifting chair 3 reaches its maximum height (at this time, the lifting table 2 is still rising), the user needs to actively participate. That is to say, from the sitting position to the semi-sitting position, the user is almost passive, and the lifting speed is controllable. From the semi-sitting position to the standing position, especially after the lifting chair reaches its maximum height in the second half, 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 the change of the sitting position or reduce the risk of being detected without the user noticing as much as possible, especially reducing the risk of being detected during the process from the sitting position to the semi-sitting position, the first speed V1 of the lifting table and the lifting chair is less than the second speed V2 from the semi-sitting position to the 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.

[0050] 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 of 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 17 shown; when the lifting table rises to its maximum height, even for a user who is a certain threshold taller than the average height (for example, 5 - 10 cm) standing in front of the lifting table in a standard standing position, the center of their line of sight can still be within the optimal line of sight range of 15° - 20°. Therefore, in order to adapt to 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 lifting table 2 and the lifting chair 3 to rise, during the process from the semi-sitting position to the standing position, even if the lifting chair 3 has reached its maximum height, the main controller will also control the lifting table 2 to continue rising until it matches the user's height (for example, when the user stands in front of the lifting table in a standard standing position and looks straight ahead, the display is located directly in front of the user's line of sight; specifically, the total lifting height of the lifting table can be calculated in advance according to the user's height); or until the center of the user's line of sight reaches within the optimal line of sight range (specifically, the total lifting height of the lifting table can be calculated in advance according to the user's height; of course, during the process from the semi-sitting position to the standing position, the image data can also be obtained in real time by using the pre-installed camera device, and then the image data analysis and processing can be performed to determine whether the center of the user's line of sight reaches within the optimal line of sight range).

[0051] As described 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 (for example, 1 min - 2 min), so as to enable early intervention. Specifically, when the actual duration of the user in the sitting position 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 = default duration threshold T0 - 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 lifting table and the lifting chair 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.

[0052] 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 form of the screw and the threaded barrel is used to achieve lifting. Therefore, during long-term use, it is inevitable that due to long-term wear, the lifting speeds of the two cannot be completely and 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, in the method of this embodiment, during the process of controlling the synchronous upward movement of the lifting table 2 and the lifting chair 3, the actual speeds of the lifting table and the lifting chair are monitored 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 judges whether the difference between the actual speeds of the two is greater than or equal to a 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 judges whether the difference between the actual speeds of the two is less than a preset second speed difference threshold (for example, 0.5 mm / s) and greater than a 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 to adjust the speed of the other one 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, thus 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.

[0053] 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 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, so as to facilitate the user to sit down.

[0054] 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, but 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 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, 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 step of: obtaining the type of the user, and the type includes: ultra-sensitive users, sensitive users, and non-sensitive users, and matching the corresponding lifting speed (e.g., the first speed V1) in the database based on the type of the user; if it is an ultra-sensitive 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. Further, if it is a dull-sensitive user among the non-sensitive users, the matched lifting speed is 5.0 mm / s - 8 mm / s. 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 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, accordingly, it can also be corrected based on the test result.

[0055] 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 Embodiment 1 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.

[0056] As Figure 3As shown in the figure, the upper robotic arm 12 includes: a first power mechanism 1205 (a motor is used 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 used 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.

[0057] As Figure 4 shown 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 used 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.

[0058] 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.

[0059] Further, in order to ensure the stability of the upper and lower robotic arms 12 and 13 in different forms, thereby ensuring the stability of the display, as Figure 1 shown, the stability of the forms of the upper and lower robotic arms, and a larger rotation space (as Figure 16 andFigure 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 S-shaped. Specifically, it includes a robotic arm body, and shaft mounting parts for connecting rotating shafts are respectively arranged at both ends of the robotic arm body, and the two shaft mounting parts are respectively located on opposite sides of the robotic arm body. Preferably, the obtuse angle between the extending direction of the shaft mounting part and the center line of the robotic arm body is 120° - 160°.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] Preferably, the rotating shaft at the rotational 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 rotational 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 rotational connection between the lower robotic arm 13 and the climber 15; while the rotating shaft at the rotational connection between the screen interface 10 and the upper robotic arm connector 11 is perpendicular to the rotating shaft at the rotational 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 located in the same vertical plane.

[0064] If directly using a motor to drive the rotation at the rotational connections at both ends of the upper robotic arm 12 or the lower robotic arm 13, on the one hand, it is necessary to externally place the motor at the rotational connection, which is easy to be contaminated with dust 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 set and a combination of gears and cables is set as the transmission mechanism to transmit the output of the motor to the metal cable to achieve flexible transmission.

[0065] As shown Figure 7 in FIG. 1, the bracket 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.

[0066] 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 enable the upper cover 1601 to move back and forth relative to the base 23.

[0067] 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.

[0068] In this embodiment, the height of the display along the Y-axis, the front-back distance along the Z-axis, 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 likely to cause 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 are used in cooperation, so that even in the face of some users with a very high height, there is no need to always control the lifting table to rise to achieve the rise of the display, but to cooperate with the climber and / or the upper and lower robotic arms to achieve the rise of the display.

[0069] In some other embodiments, a camera module is further provided on the display bracket. The camera module is used to acquire human body posture information and send it to the main controller (through 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 bracket and / or the rotation of the screen interface 10, so as to realize the adjustment of the distance between the display and the user, etc. Among them, the main controller can be integrated on the display bracket (i.e., a corresponding main controller is separately provided on the display bracket), or the main controller provided on the base in the first embodiment above can be directly adopted.

[0070] See Figure 16, in the standard sitting posture, the climber 15 is located at the 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 center of the user's line of sight and the horizontal line is 15 degrees - 20°.

[0071] 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 around 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.

[0072] Furthermore, when the user is in a sitting or standing posture, changes in sitting or standing postures may occur during their work process. 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 center of the user's line of sight 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 there is a change, corresponding adjustments need to be made.

[0073] Specifically, a camera module set on the lifting table or the display bracket is used to continuously monitor the user's posture information, and 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.

[0074] Similarly, a camera device and other modules set on the lifting table or the display bracket are used to continuously monitor the user's standing posture information, and then the main controller performs standing posture recognition and judgment. If the standing posture information is a standard standing posture backward tilt, the upper robotic arm and the lower robotic arm are controlled to expand, so that the display moves a corresponding distance in the direction close to the user, but the height remains unchanged, so that the center of the user's line of sight is between 15° - 20° below the horizontal line of sight; or, if the standing posture information is a standard standing posture left tilt or a standard standing posture 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 center of the user's line of sight is between 15° - 20° below the horizontal line of sight.

[0075] See Figure 16 and Figure 17, the standard sitting posture means that the visual distance between the user and the display is L, and the angle between the center of the user's line of sight and the Z-axis is 15 degrees - 20°. See Figure 17 As shown on the far right in Figure 17 , the standard standing posture means that the visual distance between the user and the display is L, and the angle between the center of the user's line of sight and the Z-axis is 15 degrees - 20°.

[0076] In some embodiments, the display bracket is installed on a height-adjustable desk and chair. Through the joint cooperation with the height-adjustable desk and chair, the user's field of vision is in the best field of vision.

[0077] Furthermore, in the first embodiment above, the lifting height of the height-adjustable desk is set based on the average height. That is, when the height-adjustable desk 2 rises to the maximum height and a person stands in front of the height-adjustable desk in a standing posture, they can look straight ahead at the front display (and can maintain 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 height-adjustable desk in a standing posture and look straight ahead, they may not be able to maintain within the above-mentioned best line-of-sight range. Although the total rising height of the height-adjustable desk can be increased to match different users, if the desktop of the height-adjustable desk rises too high, it will cause certain problems of center-of-gravity shift or imbalance, thus affecting the user experience. Therefore, in this embodiment, the function of setting the lifting rod and the upper and lower robotic arms is also to be able to cooperate with the height-adjustable desk to lift and lower, so as to adapt to more users. For example, when the main controller set on the display bracket or on the height-adjustable desk 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 display and the user, in addition to controlling the height-adjustable desk and the height-adjustable chair to rise, during the process from semi-sitting to standing posture, the display bracket is also controlled to rise synchronously. The specific principle can be referred to the subsequent embodiments.

[0078] Embodiment Four: 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 rotatably connected to an upper robotic arm. The other end of the upper robotic arm connector is rotatably connected to an upper robotic arm connector. A screen interface for mounting a display device is arranged on the upper robotic arm connector. Among them, the working principles of all components are the same as those of the components 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, therefore, the rotation axis at the rotation connection between the lower robotic arm and the climber is parallel to the lifting direction of the climber, and the rotation axes at the rotation 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 rotation axis of the lower robotic arm and the climber; and the rotation axis at the rotation connection between the screen interface and the upper robotic arm connector is perpendicular to the rotation axis at the rotation connection between the upper robotic arm and the upper robotic arm connector. That is to say, 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.

[0079] 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 cooperate with the lifting table to lift to adapt to users of different heights, the display stand can also adapt to the changes in different sitting or standing postures of users by controlling the extension or telescoping between the upper robotic arm and the lower robotic arm. That is to say, multi-dimensional adjustment is achieved.

[0080] Embodiment 5: The present invention also provides a desk with an integrated table and chair, which includes the lifting table and chair in Embodiment 1 and the movable display stand in Embodiment 3 or 4. Refer to Figure 1 , the display stand 1 is slidably assembled on the panel through the guide rail at the bottom and the slider on the upper panel of the lifting table 2.

[0081] 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 identifies the posture type according to the image data, and then controls the lifting table, the lifting chair and / or the display stand according to the identified posture type.

[0082] Based on the above-mentioned desk, the present invention provides a control method for a desk. Specifically, the method includes the steps: S101 monitors in real time whether the user is in a sedentary state; if the user is in a sedentary state, step S102 is executed; if the user is not in a sedentary state, no operation is performed. In some embodiments, the first pressure sensor 2303 provided on the base 23 and / or the second pressure sensor 3102 on the lift chair are used to collect real-time pressure data (including pressure values and / or pressure distributions, etc.), 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's sitting position with a preset duration threshold (for example, 30 minutes). 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 there is no need for intervention.

[0083] S102 controls the lift desk 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 step S103 is executed. S103 After switching to the semi-sitting position, it is judged whether the user's height exceeds a preset standard height threshold; if not, step S104 is executed, and if so, step S105 is executed. S104 controls the lift desk and the lift chair to both rise synchronously by a second height H2 at a second speed V2, and then controls the lift desk to continue to rise by a third height H3 at a third speed V3, so that the user switches from the semi-sitting position to a standing position. S105 controls the lift desk and the lift chair to both rise synchronously by a second height H2 at a second speed V2, and then controls the lift desk to continue to rise by a third height H3 at a third speed V3, and at the same time controls the display 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 desk and the lift chair to both rise synchronously by a second height H2 at a second speed V2, and then control the lift desk to continue to rise by a fifth height H5 at a third speed V3, so that the user switches from the semi-sitting position to a standing position.

[0084] That is, the control method of this embodiment has the same 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 display 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.

[0085] 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, actually, especially after the lifting chair reaches its maximum height (at this time, the lifting table continues to rise), the user needs to have a certain degree of participation. That is, the process from a sitting position to a semi-sitting position is almost completely passive and the lifting speed is also 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 consider the speed of the user during the standing process. Therefore, in order to achieve a change in 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.

[0086] 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 they stand in front of the lifting table in a standing position and look straight ahead, they may not be able to maintain within the above-mentioned best 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 (> 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; while 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 stand to rise simultaneously, or when only the lifting chair reaches its maximum height, control the monitor stand and the lifting table to rise. Compared with the method of only matching the height by 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.

[0087] 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 stand 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.

[0088] Preferably, when controlling the lifting of the monitor bracket, first control the climber of the monitor bracket to rise 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 make it impossible to climb. Therefore, the power device in 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.

[0089] 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. Therefore, 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 judged 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, it is judged that the user is about to enter a sedentary state, and the lifting table and the lifting chair are controlled to lift synchronously, that is, step S102 is executed. Moreover, precisely because the lifting process is not easily perceived by 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.

[0090] Further, when the user is in the sitting or standing position, the sitting or standing posture may change during the working process. For example, the sitting posture may lean forward, backward, to the right or to the left. Similarly, the standing posture 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 monitor the user's posture information or standing posture information in real time. If there is a change, corresponding adjustments need to be made.

[0091] Specifically, modules such as camera devices set on the lifting table or the monitor bracket are used to monitor the user's posture information in real time, 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.

[0092] Similarly, modules such as camera devices installed on the height-adjustable desk or 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 or standard right-leaning posture, the upper robotic arm connector is controlled to rotate left and right according to the left-leaning distance.

[0093] In the actual application process, since the height-adjustable desk and the height-adjustable 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 sitting to semi-sitting. Therefore, further, in order to reduce this risk, the method of this embodiment monitors the actual speeds of the height-adjustable desk and the height-adjustable chair in real time during the process of controlling the synchronous upward movement of the height-adjustable desk and the height-adjustable 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 height-adjustable desk and the height-adjustable chair to stop rising; 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.

[0094] Further, in order to prevent the height-adjustable chair from interfering with the user's conversion from semi-sitting to standing posture, in this embodiment, when the height-adjustable chair rises by H1 + H2, that is, when it rises to the maximum height, control the height-adjustable chair to move backward a preset distance. Of course, if the user needs to switch from a standing posture to a sitting posture, the user can control the height-adjustable chair to approach through the rocker controller and other components in the above embodiment, so as to facilitate the user to sit down.

[0095] 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 the sitting position to the semi-sitting position), so as to adapt to the personalization of users. Specifically, before or after the step of real-time monitoring whether the user is in a sedentary state in this embodiment of the method (that is, before or after performing step S101), the method further includes the step of: obtaining the type of the user, and the type includes: ultra-sensitive users, sensitive users, and non-sensitive users, and matching the corresponding lifting speed in the database based on the type of the user; if the user is an ultra-sensitive user, the lifting speed matched in the database is 2.5 mm / s - 3 mm / s; if the user is a sensitive user, the lifting speed matched in the database is 3 mm / s - 3.8 mm / s; if the user is a non-sensitive user, the lifting speed matched in the database is 3.8 mm / s - 8 mm / s. Specifically, the user type can be set by the user himself / herself when the user uses it for the first time. Or, at the first use, let the user perform the corresponding sensitivity test (the sensitivity test of the user to the lifting movement is 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.

[0096] 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 expressly 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 additional identical elements in the process, method, article or device including that element.

[0097] 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 and scope protected by the claims of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A lifting table and chair, characterized in that, Comprising: a base, a lifting arm mounted on the base, a panel located at the top end of the lifting arm, a support module provided on the base, and a horizontal movement mechanism provided between the base and the support module, wherein one end of the lifting arm is connected to a first driving device inside the base, and driven by the first driving device, the lifting arm drives the panel to move up and down relative to the base; the horizontal movement mechanism includes: a second driving device provided on the base, and a telescopic rod connected to the second driving device, and the end of the telescopic rod is connected to the support module; the support module includes: a support plate, a lifter, a support base connected in sequence, and a third driving device provided on the support base for driving the lifter, and the support base is connected to the end of the telescopic rod; a pressure sensor and a main controller are provided inside the base, wherein the main controller is used to judge whether the user is currently in a sedentary state according to the pressure data collected by the pressure sensor, and if it is recognized that the user is currently in a sedentary state, control the lifting arm and the lifter to move up or down simultaneously; Specifically, the controller controls the lifting table and the lifting chair to rise synchronously by a first height H1 at a first speed V1, so that the user switches from a sitting position to a semi-sitting position; and after switching to the semi-sitting position, judge whether the user's height exceeds a preset standard height threshold; if not, control the lifting table and the lifting chair to rise synchronously by a second height H2 at a second speed V2, and then control the lifting table to continue to rise 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 so, control the lifting table and the lifting chair to rise synchronously by a second height H2 at a second speed V2, and then control the lifting table to continue to rise 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 ranges of the first speed V1 and the second speed V2 are: 2.5 mm / s - 3.5 mm / s, and the value range of the third speed V3 is: 3.5 mm / s - 8 mm / s.

2. The lifting table and chair according to claim 1, wherein The lifting arm includes: a lifting screw, a first outer shell of the lifting arm connected to the bottom of the panel, and a second outer shell of the lifting arm connected to the base, the lifting screw is arranged inside the first outer shell of the lifting arm, one end of the lifting screw is connected to the first driving device, and the other end is threadedly connected to the first outer shell of the lifting arm, and driven by the first driving device, the lifting screw rotates, so that the first outer shell of the lifting arm moves up and down relative to the second outer shell of the lifting arm.

3. The lifting table and chair according to claim 1, characterized in that, The bottom plate includes a base, an intermediate bottom plate and a bottom plate outer shell covered in sequence, the telescopic rod is arranged on the intermediate bottom plate, a telescopic groove is provided on the bottom plate outer shell, and the bottom of the support base penetrates through the telescopic groove and enters the inside of the bottom plate outer shell to be connected to the end of the telescopic rod.

4. The lifting table and chair according to claim 1, characterized in that, The controller is further configured to determine whether the user is in a sitting position according to the pressure data collected by the pressure sensor. When it is determined that the user is in a sitting position, it is determined whether the duration of the user in the sitting position is greater than or equal to a preset duration threshold. If it is greater than or equal to the preset duration threshold, it is determined that the user is in a sedentary state, and the lifting arm and the lifter are controlled to move upward or downward simultaneously; if it is less than the preset duration threshold, it is determined that the user is not in a sedentary state; wherein, the preset duration threshold is the default duration threshold T0. Alternatively, the controller is further configured to determine whether the user is in a sitting position according to the pressure data collected by the pressure sensor. When it is determined that the user is in a sitting position, it is determined whether the duration of the user in the sitting position is greater than or equal to a preset duration threshold. If it is greater than or equal to the preset duration threshold, the lifting arm and the lifter are controlled to move upward or downward simultaneously; wherein, the preset duration threshold T = the default duration threshold T0 - the early trigger time interval t.

5. The lifting table and chair according to claim 4, characterized in that, The controller is further configured to obtain the user type of the user and match the corresponding lifting speed in the database according to the user type; if the user is a hypersensitive user, the first speed matched is 2.5 mm / s - 3 mm / s; if the user is a sensitive user, the first speed matched in the database is 3 mm / s - 3.8 mm / s; if the user is a non-sensitive user, the lifting speed matched in the database is 3.8 mm / s - 8 mm / s.

6. The lifting table and chair according to claim 1, wherein, The lifter includes: an upper lifter rotatably connected to the support plate, and a lower lifter rotatably connected to the support bottom plate. The upper lifter includes: an upper lifter housing, and an internal thread sleeve disposed inside the upper lifter. The lower lifter includes: a lower lifter housing, and a screw rod disposed inside the lower lifter. Wherein, the screw rod is threadedly connected to the internal thread sleeve. Driven by the third driving device, the screw rod rotates relative to the internal thread sleeve, so that the upper lifter moves up and down relative to the lower lifter.

7. The lifting table and chair according to claim 6, characterized in that, The upper lifter is provided with a rotating shaft. An axial hole is provided at the bottom of the support plate. The upper lifter is rotatably connected to the support plate through the axial hole and the rotating shaft. The extending direction of the rotating shaft is perpendicular to the lifting direction of the lift chair and perpendicular to the moving direction of the lift chair.

8. The lifting table and chair according to claim 1, characterized in that, The support base includes: a mounting plate. A base connection portion is provided at the lower part of the mounting plate. An electric telescopic rod is provided on the mounting plate. Two ends of the telescopic rod are respectively rotatably connected to the mounting plate and the screw rod.

9. The lifting table and chair according to claim 1, wherein A rocker controller is provided on the panel.

10. The lifting table and chair according to claim 1, characterized in that, A wireless charging port is provided on the panel.

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