Grating monitoring device for electric lifting table and electric lifting table

Abstract

The utility model discloses a grating monitoring device for an electric lifting table and the electric lifting table. The electric lifting table comprises a table top, an I-shaped supporting assembly, a lifting driving device and a manual control terminal. Wherein the grating monitoring device comprises a grating infrared correlation type sensor and a display unit, the grating infrared correlation type sensor is arranged on the I-shaped supporting assembly, and the grating infrared correlation type sensor is used for monitoring the sleeving depth value of a lifting regulation and control component and a fixed supporting component in the I-shaped supporting assembly; the height value of the desktop is obtained according to the sleeving depth value, and the display unit is used for displaying the height value of the desktop. Due to the fact that the height value of the table top is obtained in the mode that the grating infrared correlation type sensor detects the sleeving depth value of the lifting regulation and control component and the fixed supporting component, the height adjustment precision of the table top is higher, and due to the fact that real-time display is achieved through the display unit, the user experience is greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of intelligent furniture, and in particular to a grating monitoring device for an electric lift table and an electric lift table. Background Art

[0002] Electric height-adjustable tables are typically used as smart office furniture, but with the growing demand for working from home, they've become widely adopted for home use, such as as computer desks or study desks. Electric height-adjustable tables are electrically powered and can easily and automatically adjust the tabletop height to meet the individual needs of different users. The height adjustment of an electric height-adjustable table is a crucial feature. When used for home use, it must be adjusted to suit the user's height. Currently, height adjustment accuracy is low, requiring arbitrary adjustments based on user feel. However, when used to correct children's sitting posture, a certain level of precision is required. Summary of the Invention

[0003] The main technical problem solved by this application is to improve the accuracy of the desktop height of an electric lifting table.

[0004] According to the first aspect, an embodiment provides a grating monitoring device for an electric lift table, wherein the electric lift table includes a tabletop, an I-shaped support assembly, a lift drive device, and a hand-controlled terminal;

[0005] The I-shaped support assembly includes a lifting and regulating component and a fixed support component, wherein the lifting and regulating component is connected to the fixed support component in a sleeve manner; the lifting and regulating component is fixedly connected to the table top, and the fixed support component is used to horizontally support the table top through the lifting and regulating component;

[0006] The lifting drive device is provided on the I-shaped support assembly, and is used to adjust the sleeve depth of the lifting regulating member and the fixed support member by driving the motor to rotate, so as to control the lifting height of the electric lifting table;

[0007] The hand-controlled terminal is electrically connected to the lifting drive device; a key switch is provided on the hand-controlled terminal, and a lifting electrical signal is output to the lifting drive device by turning the key switch on or off, so that the lifting drive device raises and lowers the desktop in response to the lifting electrical signal;

[0008] The grating monitoring device includes a grating infrared radiation sensor and a display unit;

[0009] The grating infrared beam sensor is arranged on the I-shaped support assembly, and is used to monitor the sleeve depth value of the lifting and regulating member and the fixed support member, so as to obtain the height value of the table top according to the sleeve depth value;

[0010] The display unit is configured to display the height value of the tabletop.

[0011] In an embodiment, the grating infrared opposite radiation sensor comprises an infrared emitter and a light receiver; the infrared emitter and the light receiver are respectively fixedly arranged on the lifting control member and the fixed support member, so as to obtain the sleeving depth value according to the light receiving position of the light receiver.

[0012] In an embodiment, when the electric lifting table is lifting the tabletop, the grating infrared opposite radiation sensor is further configured to obtain a change value of the sleeving depth value of the lifting control member and the fixed support member according to the change speed of the light receiving position of the light receiver, and obtain the instant lifting speed of the tabletop according to the change value of the sleeving depth value.

[0013] The display unit is further configured to display the instant lifting speed.

[0014] In an embodiment, the infrared emitter is arranged in the hollow cavity of the lifting control member, and the light receiver is arranged in the hollow cavity of the fixed support member.

[0015] In an embodiment, the electric lifting table comprises at least two I-shaped support assemblies, and each of the I-shaped support assemblies is respectively provided with one grating infrared opposite radiation sensor.

[0016] In an embodiment, the grating monitoring device is further connected with the lifting driving device, and is configured to send the instant height value of the tabletop to the lifting driving device, so as to verify the lifting height when the lifting driving device performs the lifting operation of the tabletop.

[0017] In an embodiment, the tabletop of the electric lifting table comprises a transparent region, and the display surface of the display unit is arranged below the transparent region, so that the display surface of the display unit is displayed through the transparent region.

[0018] According to the second aspect, in an embodiment, an electric lifting table is provided, comprising the grating monitoring device according to the first aspect.

[0019] In an embodiment, the hand control terminal is provided with a display screen, and the display unit of the grating monitoring device is arranged on the display screen.

[0020] In an embodiment, the display screen is an LED screen.

[0021] According to the grating monitoring device of the above embodiment, the desktop height value is obtained by using a grating infrared counter-radiation sensor to detect the installation depth value of the lifting and regulating component and the fixed support component, so that the height adjustment accuracy of the desktop is higher, and because it is displayed in real time through the display unit, the user experience is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of an electric lift table in one embodiment;

[0023] Figure 2 This is a schematic diagram of the structure of an electric lift table in one embodiment;

[0024] Figure 3 This is a structural block diagram of a lifting monitoring system in an embodiment;

[0025] Figure 4 A side view of an electric lift table in one embodiment;

[0026] Figure 5 A block diagram of a load-bearing monitoring device in one embodiment;

[0027] Figure 6 A structural block diagram of a grating monitoring device in one embodiment;

[0028] Figure 7 A schematic diagram of the principle of a grating infrared beam sensor in one embodiment;

[0029] Figure 8 It is a cross-sectional schematic diagram of the sleeve assembly of the I-beam support component in one embodiment. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted in different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions, and for those skilled in the art, it is not necessary to describe these related operations in detail. They will fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0031] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various embodiments. Furthermore, the steps or actions in the method description may be reordered or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various sequences in the specification and drawings are provided solely for the purpose of clearly describing a particular embodiment and are not intended to be mandatory, unless otherwise specified.

[0032] Component numbers used herein, such as "first" and "second," are used solely to distinguish the components being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0033] In the prior art, ensuring the uniform speed of the electric lift table is achieved by controlling the constant driving current of the motor, which is specifically read by the Hall sensor set on the motor. The position detection and speed detection of the lift table column are usually detected by the Hall element on the motor shaft to determine the motion state. However, in the actual use of the electric lift table, the desktop is used to place items (for example, computers, books, lamps and / or household appliances, etc.), so the load-bearing capacity of the entire desktop is uncertain and unbalanced. Therefore, setting a single driving current for lifting and lowering control cannot guarantee that the lifting speed and lowering speed of the desktop will always remain consistent when there is a heavy load. It should be pointed out that ensuring the uniform lifting and lowering of the desktop can reduce the load and wear of the motor, extend the service life of the motor, and thus ensure the stability and durability of the electric lift table.

[0034] There will be safety hazards (for example, collision and jamming) in the lifting process of the electric lift table, so it is necessary to set up lifting protection mechanisms such as emergency stop, rollback and / or initialization recovery in a targeted manner. At present, the judgment of collision and jamming of the electric lift table is based on the change of the driving current of the drive motor. However, when the desktop of the electric lift table bears a large load, it will also cause the driving current to be too large (the greater the load, the greater the lifting power required, and the greater the driving current required of the drive motor), which will lead to misjudgment of the electric lift table and then cause a fault prompt of the lift table. Obviously, there are safety hazards in monitoring the uniform speed of the desktop lifting based only on the driving current of the drive motor. How to expand multiple ways to monitor the lifting speed of the desktop is a major research and development direction of this application.

[0035] Example 1:

[0036] Please refer to Figure 1Figure 2 is a schematic diagram of the structure of an electric lift table in one embodiment. The electric lift table includes a tabletop 1, an I-shaped support assembly 2, and a lift drive 3. The I-shaped support assembly includes a lift control member and a fixed support member, which are connected in a telescopic manner. The lift control member is fixedly connected to the tabletop, and the fixed support member is used to horizontally support the tabletop through the lift control member.

[0037] Please refer to Figure 2 , is a structural diagram of an electric lift table in another embodiment. In one embodiment, the lifting drive device is arranged on the I-shaped support assembly. The lifting drive device is used to adjust the installation depth of the lifting control member 21 and the fixed support member 22 by rotating the driving motor to control the lifting height of the desktop 1 of the electric lift table.

[0038] Please refer to Figure 3 , is a structural block diagram of a lifting monitoring system in an embodiment, in which the lifting monitoring system 5 includes a load-bearing monitoring device 51, a gyroscope monitoring device 52, and a grating monitoring device 53. The load-bearing monitoring device is used to monitor the load-bearing weight of the desktop in real time, and convert the load-bearing weight into a load-bearing electrical signal and send it to the lifting drive device 3. When the electric lifting table lifts the desktop, the lifting drive device 3 sets the driving current of the motor 4 according to the value of the load-bearing electrical signal, so that the desktop can be lifted and lowered at a preset first lifting speed. The gyroscope monitoring device 52 is used to monitor the lifting acceleration of the desktop in real time, and send the lifting acceleration to the lifting drive device 3. The lifting drive device 3 is used to verify the first lifting speed based on the lifting acceleration. In one embodiment, when the value of the lifting acceleration is zero, the desktop is in a stationary state or a uniform lifting state. When the value of the lifting acceleration is not zero, the desktop will enter a braking state or a non-uniform lifting state. The grating monitoring device 53 is used to monitor the nesting depth of the lifting and regulating member 21 and the fixed support member 22 in real time. Based on the change in the nesting depth, the grating monitoring device 53 determines the relative movement speed of the lifting and regulating member 21 and the fixed support member 22, and transmits the relative movement speed to the lifting drive device 3. The lifting drive device 3 is used to verify the first lifting speed based on the relative movement speed. The lifting drive device 3 is also used to stop the lifting operation of the electric lifting table when the difference between the relative movement speed and the first lifting speed exceeds a preset upper limit during the lifting and lowering control of the electric lifting table.

[0039] In one embodiment, the method of setting the driving current of the motor based on the value of the load-bearing electrical signal is to obtain the driving current value of the motor when the desktop has different load-bearing weights through testing, so as to maintain the desktop lifting speed at a first lifting speed, so as to obtain the corresponding curve between the load-bearing weight and the driving current. Then, when the electric lifting table is raised or lowered, the driving current of the motor is set according to the current load-bearing weight of the desktop and the corresponding curve between the load-bearing weight and the driving current.

[0040] Please refer to Figure 4, is a side schematic diagram of an electric lift table in one embodiment. In one embodiment, the load-bearing monitoring device includes a first load-bearing sensor 23, which is arranged on the connecting piece between the desktop and the lifting and regulating member 21, and a first load-bearing sensor 23 is arranged on each connecting piece. The first load-bearing sensor 23 is used to sense the load-bearing weight of the desktop. In one embodiment, the load-bearing monitoring device includes a second load-bearing sensor 24, which is arranged on the ground-contacting table legs of the fixed support member 22, and a second load-bearing sensor 24 is arranged on each ground-contacting table leg. The second load-bearing sensor 21 is used to measure the pressure of each corner of the electric lift table on the ground on the one hand, and on the other hand, it is used to monitor whether the I-beam support assembly has abnormal deformation through the different pressures of each corner of the table.

[0041] In one embodiment, the lifting drive device is further configured to, during the lifting control of the electric lift table, determine that the lifting of the electric lift table is obstructed and stop the lifting or cause the tabletop to rebound if the weight sensed by at least one first load-bearing sensor and at least one second load-bearing sensor increases, while the weight sensed by the other first load-bearing sensors and at least one second load-bearing sensor decreases. Alternatively, the lifting drive device is further configured to, during the lifting control of the electric lift table, determine that the lifting of the electric lift table is obstructed and stop the lifting or cause the tabletop to rebound if the weight sensed by at least one first load-bearing sensor and at least one second load-bearing sensor decreases, while the weight sensed by the other first load-bearing sensors and at least one second load-bearing sensor increases. If the pressure on one side of the electric lift table suddenly increases or decreases, while the pressure on the other side reverses, it can be determined that an obstacle has been encountered during the lifting process, and a protective stop or rebound operation can be performed.

[0042] In one embodiment, the grating monitoring device includes a grating infrared beam sensor, which includes an infrared emitter and a light receiver. The infrared emitter and light receiver are fixedly mounted on the lifting and control member and the fixed support member, respectively, to determine the relative movement speed based on the speed of change of the light receiving position of the light receiver. In one embodiment, the grating monitoring device is also used to determine the tabletop height of the electric lifting table based on the light receiving position of the light receiver. In one embodiment, the infrared emitter and light receiver are mounted within a cavity of a sleeve assembly that sleeves the lifting and control member and the fixed support member.

[0043] In an embodiment, the gyroscope monitoring device comprises an electronic gyroscope fixedly connected to the tabletop, and the electronic gyroscope is configured to monitor the lifting acceleration of the electric lifting table during the lifting process. In an embodiment, the electronic gyroscope is further configured to monitor the change of the lifting acceleration of the tabletop of the electric lifting table during the lifting process, so as to determine the confirmation of the tabletop reaching the reset position and the confirmation of the tabletop stopping during the lifting process when the tabletop is reset and calibrated. In an embodiment, the value of the lifting acceleration suddenly changes from zero to another value and then returns to zero, and it can be determined that the tabletop has completed the stopping process. Compared with the traditional current detection circuit, the electronic gyroscope and the associated circuit are used to realize the reset function of the lifting table. When the lifting column of the lifting table needs to be reset and then the whole machine position initialization process is performed, the column will be lowered to collide with the mechanical position to generate load and acceleration change. Through the corresponding signal processing circuit, it is determined that the lifting driving device stops and the reset is completed. The traditional method usually uses a current detection circuit to determine the method, which needs to increase the process of detecting load change and sampling signal processing, and has the problems of low precision, high time delay and single detection quantity. When the electronic gyroscope is applied to the reset function of the electric lifting table, the reset condition is more accurate in speed and acceleration parameters, and through the fast response speed and high precision sampling and signal processing circuit, the tabletop can be more accurately identified whether it is completely reset, so that the electric lifting table is more accurate, rapid and safe during the reset process.

[0044] In an embodiment of the present application, a lifting monitoring method is also disclosed, which is applied to the lifting monitoring system as described above. The lifting monitoring method is configured to monitor the tabletop bearing weight of the electric lifting table, and when the electric lifting table is controlled to lift at a preset first lifting speed, the driving current of the motor driving the tabletop lifting movement is set according to the tabletop bearing weight.

[0045] In an embodiment, the lifting monitoring method further comprises a first lifting speed setting function, which specifically comprises:

[0046] The preset speed value input by the user is taken as the first lifting speed, and the driving current value of the motor maintaining the lifting speed of the tabletop as the first lifting speed is re-acquired when the tabletop bears different weights in a test manner, so as to obtain the corresponding curve of the bearing weight and the driving current. In an embodiment, the lifting speed during the lifting process is verified by the grating monitoring device during the test.

[0047] The lifting monitoring system disclosed in the embodiments of the present application includes a load-bearing monitoring device, a gyroscope monitoring device, and a grating monitoring device. The load-bearing monitoring device is used to monitor the load-bearing of the desktop of the electric lifting table, the gyroscope monitoring device is used to monitor the lifting acceleration of the desktop, and the grating monitoring device is used to monitor the change in the sleeve depth in the I-beam support assembly of the electric lifting table to obtain the relative moving speed. In the process of lifting and lowering the electric lifting table, the lifting drive device of the electric lifting table sets the driving current of the motor for providing lifting power according to the load-bearing weight, so that the desktop is lifted and lowered at a preset first lifting speed, and the first lifting speed is verified by the lifting acceleration and the relative moving speed during the lifting process. Since different motor driving currents are set according to different loads to ensure the constancy of the desktop lifting speed, the safety and reliability of the electric lifting table are greatly improved, thereby improving the user experience.

[0048] Example 2:

[0049] In one embodiment of the present application, a load-bearing monitoring device for an electric lift table is also disclosed, wherein the electric lift table includes a desktop, an I-shaped support assembly, a lifting drive device, and a hand-controlled terminal. The I-shaped support assembly includes a lifting control member and a fixed support member, the lifting control member and the fixed support member are connected in a sleeve manner, the lifting control member is fixedly connected to the desktop, and the fixed support member is used to horizontally support the desktop through the lifting control member. The lifting drive device is provided on the I-shaped support assembly, and the lifting drive device is used to adjust the sleeve depth of the lifting control member and the fixed support member by rotating the driving motor to control the lifting height of the electric lift table. The hand-controlled terminal is electrically connected to the lifting drive device, and a push button switch is provided on the hand-controlled terminal. The lifting electrical signal is output to the lifting drive device by turning the push button switch on or off, so that the lifting drive device can lift the desktop in response to the lifting electrical signal.

[0050] Please refer to Figure 5 , a block diagram of the mechanism of a load-bearing monitoring device in an embodiment, the load-bearing monitoring device 51 includes a first load-bearing sensor 23 and a display module 25. The first load-bearing sensor 23 is set on the connecting piece between the desktop and the lifting and regulating component, and the first load-bearing sensor 23 is used to sense the load-bearing weight of the desktop. The display module 25 is used to display the value of the load-bearing weight. In one embodiment, a first load-bearing sensor is set on each connecting piece between the desktop and the lifting and regulating component to measure the load-bearing weight of the desktop in different directions and display it through the display module 25.

[0051] In one embodiment, the desktop of the electric lift table includes a transparent area (e.g., glass or plastic), and the display surface of the display module 25 is positioned below the transparent area, allowing the display module 25 to display through the transparent area. Positioning the display module 25 below the transparent area prevents it from protruding from the desktop, thereby minimizing the space on the desktop.

[0052] In one embodiment, the load-bearing monitoring device further includes a second load-bearing sensor 24, which is mounted on the floor-contacting legs of the fixed support structure. Each floor-contacting leg is provided with a second load-bearing sensor 24. The second load-bearing sensor 24 measures the load on the floor-contacting legs and displays it on a display module 25. During home use, the electric lift table is placed on a floor, carpet, or tiled surface, and the weight bearing on the table corners is displayed, serving as a reminder to protect the floor.

[0053] like Figure 5 As shown, in one embodiment, the first load-bearing sensor 23 and the second load-bearing sensor 24 are also connected to the lifting drive 3. During the lifting control of the electric lift table, if the load-bearing weight sensed by at least one first load-bearing sensor and at least one second load-bearing sensor increases, while the load-bearing weight sensed by the other first load-bearing sensors and second load-bearing sensors decreases, the lifting drive determines that the lifting of the electric lift table is obstructed and stops the lifting of the table top or causes the table top to rebound if there is any resistance. Alternatively, during the lifting control of the electric lift table, if the load-bearing weight sensed by at least one first load-bearing sensor and at least one second load-bearing sensor decreases, while the load-bearing weight sensed by the other first load-bearing sensors and second load-bearing sensors increases, the lifting drive determines that the lifting of the electric lift table is obstructed and stops the lifting of the table top or causes the table top to rebound if there is any resistance. This allows the load-bearing weight to be used for safety protection during the lifting operation of the table top.

[0054] In one embodiment, the first load-bearing sensor 23 is further connected to the lift drive device 3 and is configured to transmit the weight of the desktop to the lift drive device 3, so that the lift drive device 3 can set the driving current of the motor that controls the desktop's lifting speed based on the weight of the desktop. In one embodiment, the lift drive device 3 sets the driving current of the motor that controls the desktop's lifting speed based on the maximum or average value of the weight sensed by the first load-bearing sensor 23.

[0055] In one embodiment, the sensor types of the first load-bearing sensor and the second load-bearing sensor include an S-type load-bearing sensor, a cantilever-type load-bearing sensor, or a spoke-type load-bearing sensor.

[0056] In one embodiment, the display module 25 is further configured to display the maximum weight bearing capacity of the desktop, and to display a load-bearing overload prompt message when the load-bearing capacity of the desktop is greater than a preset weight value.

[0057] In one embodiment of the present application, an electric lift table is also disclosed, including the load-bearing monitoring device described above. The electric lift table disclosed in the embodiment of the present application includes a desktop, an I-shaped support assembly, a lifting drive device, and a hand-controlled terminal. The load-bearing monitoring device includes a first load-bearing sensor and a display module. The first load-bearing sensor is set on the connecting piece between the desktop and the lifting and regulating component. The first load-bearing sensor is used to sense the load-bearing weight of the desktop, and the display module is used to display the value of the load-bearing weight of the desktop in real time. Since the load-bearing weight of the desktop can be displayed in real time, it is ensured that the load-bearing weight of the desktop will not be overloaded when the electric lift table is raised or lowered, thereby greatly improving the safety and reliability of the electric lift table.

[0058] Example 3:

[0059] In one embodiment of the present application, a grating monitoring device for an electric lift table is also disclosed, wherein the electric lift table includes a desktop, an I-shaped support assembly, a lifting drive device and a hand-controlled terminal. The I-shaped support assembly includes a lifting control component and a fixed support component, and the lifting control component and the fixed support component are connected in a sleeve manner. The lifting control component is fixedly connected to the desktop, and the fixed support component is used to horizontally support the desktop through the lifting control component. The lifting drive device is provided on the I-shaped support assembly, and the lifting drive device is used to adjust the sleeve depth of the lifting control component and the fixed support component by rotating the driving motor to control the lifting height of the electric lift table. The hand-controlled terminal is electrically connected to the lifting drive device. A push button switch is provided on the hand-controlled terminal, and a lifting electrical signal is output to the lifting drive device by turning the push button switch on or off, so that the lifting drive device can lift the desktop in response to the lifting electrical signal.

[0060] Please refer to Figure 6 , is a block diagram of the structure of a grating monitoring device in one embodiment. The grating monitoring device 53 includes a grating infrared through-beam sensor 26 and a display unit 27. The grating infrared through-beam sensor 26 is mounted on the I-beam support assembly and is used to monitor the depth of the lifting and regulating member and the fixed support member, thereby determining the height of the tabletop based on the depth. The display unit 27 is used to display the height of the tabletop.

[0061] Please refer to Figure 7 , a schematic diagram of the principle of a grating infrared through-beam sensor in one embodiment, comprises an infrared emitter 31 and a light receiver 32. Infrared light is emitted by the infrared emitter 31, forming a light curtain that is received by the light receiver 32 located opposite. The light receiver 32 comprises main grating strips 321, an indicator grating 322, and a photoelectric element 323. The photoelectric element 323 of the light receiver 32 emits an electrical signal upon receiving the infrared light.

[0062] In one embodiment, the infrared emitter 31 and the light receiver 32 are fixedly mounted on the lifting and control member and the fixed support member, respectively, to obtain the set depth value based on the light receiving position of the light receiver. In one embodiment, when the electric lifting table is raised or lowered, the grating infrared through-beam sensor is also used to obtain the change in the set depth value of the lifting and control member and the fixed support member based on the speed of change of the light receiving position of the light receiver, and to obtain the instantaneous lifting speed of the table based on the change in the set depth value. In one embodiment, the display unit is also used to display the instantaneous lifting speed.

[0063] Please refer to Figure 8 , is a schematic cross-sectional view of the sleeve assembly of an I-shaped support assembly in one embodiment. In one embodiment, the infrared emitter 31 is disposed within the hollow cavity of the lift control member 22, and the light receiver 32 is disposed within the hollow cavity of the fixed support member 22. In one embodiment, the electric lift table includes at least two I-shaped support assemblies, each of which is equipped with a grating infrared beam sensor.

[0064] like Figure 6 As shown, in one embodiment, the grating monitoring device 53 is also connected to the lifting drive device 3, and is used to send the instant height value of the desktop to the lifting drive device 3 for use in lifting height verification when the lifting drive device 3 performs a desktop lifting operation.

[0065] In one embodiment, the desktop of the electric lifting table includes a transparent area, and the display surface of the display unit is set under the transparent area, so that the display surface of the display unit is displayed through the transparent area, thereby making the display unit not occupy the bearing space on the desktop.

[0066] In one embodiment of the present application, an electric lift table is further disclosed, comprising the aforementioned grating monitoring device. In one embodiment, the hand-operated terminal of the electric lift table is provided with a display screen, and the display unit of the grating monitoring device is provided on the display screen. In one embodiment, the display screen is an LED screen.

[0067] The grating monitoring device disclosed in the embodiments of the present application includes a grating infrared through-beam sensor and a display unit. The grating infrared through-beam sensor is disposed on an I-beam support assembly and is used to monitor the depth of the lifting and regulating components and the fixed support components within the I-beam support assembly, thereby obtaining the height of the desktop based on the depth. The display unit is used to display the desktop height. Because the grating infrared through-beam sensor is used to detect the depth of the lifting and regulating components and the fixed support components to obtain the desktop height, the desktop height adjustment accuracy is increased. Furthermore, because the display unit displays the information in real time, the user experience is greatly improved.

[0068] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. For those skilled in the art of the present invention, some simple deductions, modifications or substitutions can be made based on the concept of the present invention.

Claims

1. A grating monitoring device for an electric lifting table, characterized in that: The electric lifting table includes a desktop, an I-shaped support assembly, a lifting drive device and a hand-controlled terminal; The I-shaped support assembly includes a lifting and regulating component and a fixed support component, and the lifting and regulating component is connected to the fixed support component in a sleeve manner; The lifting and regulating member is fixedly connected to the table top, and the fixed supporting member is used to horizontally support the table top through the lifting and regulating member; The lifting drive device is provided on the I-shaped support assembly, and is used to adjust the sleeve depth of the lifting regulating member and the fixed support member by driving the motor to rotate, so as to control the lifting height of the electric lifting table; The hand-controlled terminal is electrically connected to the lifting drive device; a key switch is provided on the hand-controlled terminal, and a lifting electrical signal is output to the lifting drive device by turning the key switch on or off, so that the lifting drive device raises and lowers the desktop in response to the lifting electrical signal; The grating monitoring device includes a grating infrared radiation sensor and a display unit; The grating infrared beam sensor is arranged on the I-shaped support assembly, and is used to monitor the sleeve depth value of the lifting and regulating member and the fixed support member, so as to obtain the height value of the table top according to the sleeve depth value; The display unit is used to display the height value of the desktop.

2. The grating monitoring device according to claim 1, characterized in that The grating infrared beam sensor includes an infrared emitter and a light receiver; the infrared emitter and the light receiver are fixedly arranged on the lifting and regulating component and the fixed support component respectively, so as to obtain the sleeve depth value according to the light receiving position of the light receiver.

3. The grating monitoring device according to claim 2, characterized in that: When the electric lifting table is raised or lowered, the grating infrared beam sensor is further used to obtain the change value of the sheathing depth value of the lifting regulating member and the fixed supporting member according to the change value of the light receiving position of the light receiver, and obtain the instantaneous lifting speed of the table top according to the change value of the sheathing depth value; The display unit is also used to display the instantaneous lifting speed.

4. The grating monitoring device according to claim 3, characterized in that: The infrared emitter is arranged in the hollow cavity of the lifting and regulating component, and the light receiver is arranged in the hollow cavity of the fixed supporting component.

5. The grating monitoring device according to claim 2, characterized in that: The electric lifting table includes at least two I-shaped support components, and each of the I-shaped support components is provided with a grating infrared radiation sensor.

6. The grating monitoring device according to claim 2, characterized in that: The grating monitoring device is also connected to the lifting drive device and is used to send the instant height value of the desktop to the lifting drive device for use in lifting height verification when the lifting drive device performs a desktop lifting operation.

7. The grating monitoring device according to claim 1, characterized in that: The desktop of the electric lifting table includes a transparent area, and the display surface of the display unit is arranged under the transparent area, so that the display surface of the display unit is displayed through the transparent area.

8. An electric lift table, characterized in that: The device comprises a grating monitoring device according to any one of claims 1 to 7.

9. The electric lift table according to claim 8, wherein: The manual control terminal of the electric lifting table is provided with a display screen, and the display unit of the grating monitoring device is provided on the display screen.

10. The electric lift table according to claim 9, wherein: The display screen is an LED screen.

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