A hand controller for an electric lifting table and an electric lifting table

Abstract

This invention discloses a hand controller for an electric height-adjustable desk and the electric height-adjustable desk itself, solving the technical problem of large overall size caused by a large number of buttons in existing technologies. The hand controller includes a housing and a main control board disposed within the housing. The housing is provided with rollers for controlling the height adjustment of the electric height-adjustable desk. The main control board is connected to an encoder that converts the rotation angle of the rollers into an electrical signal. The main control board controls the height adjustment of the electric height-adjustable desk according to the electrical signal. Furthermore, this invention also discloses an electric height-adjustable desk, including a desktop and the aforementioned hand controller, wherein the hand controller is mounted on the bottom surface of the desktop.

Description

[Technical Field]

[0001] This invention relates to the field of electric height-adjustable desks, and more particularly to a hand controller and an electric height-adjustable desk. [Background Technology]

[0002] In the prior art, the hand controller has multiple physical buttons, including an up button and a down button. Pressing the up button controls the electric lifting table to rise, and pressing the down button controls the electric lifting table to fall. Since the multiple physical buttons need to be set at a certain distance, this results in the overall size of the hand controller in the prior art being relatively large, thereby increasing the manufacturing cost. [Summary of the Invention]

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a hand controller and electric height-adjustable desk. It can not only eliminate the setting of up and down buttons, thereby reducing the overall size and manufacturing cost, but also make it convenient for users to operate blindly by controlling the height of the electric height-adjustable desk through the rolling wheels, making the operation more convenient and more interesting.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A hand controller for an electric height-adjustable desk includes a housing and a main control board disposed within the housing. The housing is provided with rollers for controlling the height of the electric height-adjustable desk. The main control board is connected to an encoder that converts the rotation angle of the rollers into an electrical signal. The main control board controls the height of the electric height-adjustable desk according to the electrical signal.

[0006] Furthermore, the main control board is also connected to a setting switch, and the roller is elastically mounted to float relative to the setting switch. Pressing the roller triggers the setting switch.

[0007] Furthermore, the encoder is a rotary encoder, which has an input shaft sleeve, and the roller is provided with a rotating shaft, which is connected to the input shaft sleeve and rotates synchronously.

[0008] Furthermore, a first bracket is elastically installed inside the housing, the first bracket corresponds to the setting switch, the rotating shaft is rotatably mounted on the first bracket, the rotary encoder is fixed on the first bracket, and pressing the roller drives the first bracket to move and trigger the setting switch.

[0009] Furthermore, the first bracket is provided with a roller groove, a cavity, and a shaft groove. The shaft groove and the cavity are respectively located on both sides of the roller groove. The rotary encoder is installed in the cavity, part of the roller is located in the roller groove, and the shaft is rotatably engaged with the shaft groove.

[0010] Furthermore, the housing is also provided with an elastic element that penetrates the main control board, and the elastic element is press-fitted between the first bracket and the housing.

[0011] Furthermore, the housing is also provided with a limiting plate that penetrates the main control board. One of the limiting plate and the first bracket is provided with a limiting hole, and the other is provided with a limiting protrusion that slides with the limiting hole.

[0012] Furthermore, the housing is also provided with a guide plate that penetrates the main control board. One of the guide plate and the first bracket is provided with a guide groove, and the other is provided with a guide rib that slides with the guide groove.

[0013] Furthermore, the rotary encoder is welded and fixed to the main control board. One end of the rotating shaft is connected to the input shaft sleeve and rotates synchronously, while the other end corresponds to the setting switch. Pressing the roller causes the other end of the rotating shaft to deform and move, triggering the setting switch.

[0014] Furthermore, the housing also includes a support plate that penetrates the main control board. The support plate has a notch through which the other end of the rotating shaft passes. The setting switch is located on the side of the support plate away from the rotary encoder.

[0015] Furthermore, the encoder is a grating encoder, which includes an infrared transmitter and an infrared receiver arranged opposite to each other. A second bracket is provided inside the housing, which penetrates the main control board. The roller is provided with a rotating shaft, which is rotatably mounted on the second bracket and positions the roller between the infrared transmitter and the infrared receiver. The roller is provided with a plurality of gratings spaced circumferentially to allow infrared light to pass through.

[0016] Furthermore, the second bracket includes a fixed frame and a floating frame. The fixed frame includes two spaced-apart fixed pillars. One end of the rotating shaft is fitted with a torsion spring, and the two ends of the torsion spring are hooked and supported on the two fixed pillars respectively. The other end of the rotating shaft is rotatably engaged with the floating frame. The floating frame corresponds to the setting switch. Pressing the roller drives the floating frame to move and triggers the setting switch.

[0017] Furthermore, the roller includes a stop surface coaxially arranged with the rotating shaft. The stop surface is a circumferentially extending wave surface. The housing also has a stop lever, one end of which is fixed to the floating frame, and the other end of which elastically abuts against the stop surface.

[0018] Furthermore, the main control board is also connected to an up switch and a down switch. The electric height-adjustable table controller also includes two buttons that correspond one-to-one with the up switch and the down switch, respectively. Pressing the button triggers the up switch or the down switch to control the electric height-adjustable table to rise or fall.

[0019] Furthermore, the button includes a pressing part and a fixing part. The fixing part is fixed inside the housing, and the pressing part is suspended. The pressing part is provided with a trigger post extending towards the main control board. The trigger post is used to trigger the up switch or the down switch.

[0020] Furthermore, the button is located inside the housing, and the housing has a clearance hole for exposing the pressing part to the outside.

[0021] Furthermore, the two buttons are located on either side of the scroll wheel.

[0022] The present invention also provides an electric height-adjustable desk, including a desktop panel and a hand controller for the electric height-adjustable desk as described in any of the above technical solutions, wherein the hand controller is installed on the bottom surface of the desktop panel.

[0023] The beneficial effects of this invention are:

[0024] When using the hand controller of this invention, the height of the electric height-adjustable table can be controlled by rolling the rollers, thereby eliminating the need for up and down buttons, reducing the overall size of the hand controller and manufacturing costs. In addition, the method of controlling the height of the electric height-adjustable table by rolling the rollers also makes it convenient for users to operate blindly, making operation more convenient and more fun.

[0025] The main control board is also connected to a setting switch. A roller is flexibly mounted and floats relative to the setting switch; pressing the roller triggers the setting switch. With this design, once the electric height-adjustable desk has risen or fallen to the desired position, pressing the roller triggers the setting switch, setting the current desktop position as the preferred position. This way, the desk will stop rising or falling when it reaches the preferred position the next time it is used, thus improving the user experience.

[0026] The encoder is a rotary encoder, which has an input shaft sleeve and a roller with a rotating shaft. The rotating shaft is connected to the input shaft sleeve and rotates synchronously. With this design, the rotating roller can drive the rotating shaft to rotate, which in turn drives the input shaft sleeve to rotate synchronously, thereby driving the code disk inside the rotary encoder to rotate. The rotation angle of the roller can be converted into an electrical signal and output, thus enabling the switching of functional parameters through the rolling roller.

[0027] A first bracket is elastically mounted inside the housing, corresponding to the setting switch. A rotating shaft is rotatably mounted on the first bracket, and a rotary encoder is fixed to the first bracket. Pressing the roller drives the first bracket to move and triggers the setting switch. This design allows the roller to rotate relative to the housing, enabling the user to drive the roller to rotate around its axis for parameter selection. It also ensures that the rotating shaft and rotary encoder move synchronously when the roller is pressed, thus guaranteeing the reliable connection between the rotating shaft and the input shaft sleeve.

[0028] The first bracket has a roller groove, a cavity, and a shaft groove. The shaft groove and the cavity are located on both sides of the roller groove. The rotary encoder is installed in the cavity, and part of the roller is located in the roller groove. The shaft rotates in conjunction with the shaft groove. This design allows for limiting the rotary encoder through the cavity and limiting the roller through the roller groove, facilitating the installation of the rotary encoder and the roller.

[0029] The housing also contains an elastic element that penetrates the main control board, and the elastic element is press-fitted between the first bracket and the housing. This design allows for the elastic installation of the first bracket. When the roller is pressed, the first bracket moves and compresses the elastic element, causing the first bracket to trigger the setting switch. After the roller is released, the elastic element drives the first bracket and the roller to reset.

[0030] The housing also includes a limiting plate that penetrates the main control board. One of the limiting plate and the first bracket has a limiting hole, and the other has a limiting protrusion that slides with the limiting hole. This design limits the movement distance of the first bracket through the limiting hole and keeps it within a small range, allowing the user to trigger the setting switch by simply pressing the scroll wheel.

[0031] The housing also includes a guide plate that runs through the main control board. One of the guide plates and the first bracket has a guide groove, and the other has a guide rib that slides in conjunction with the guide groove. This design prevents the first bracket from shaking excessively when it moves, thus avoiding the phenomenon of the rollers getting stuck between themselves and the housing and failing to roll smoothly.

[0032] The rotary encoder is welded and fixed to the main control board. One end of the rotating shaft is connected to the input shaft sleeve and rotates synchronously. A switch is set at the other end. Pressing the roller causes the other end of the rotating shaft to deform and move, triggering the setting switch. In this design, the rotating shaft has a certain degree of elasticity. When the roller is pressed, the rotating shaft deforms and moves, triggering the setting switch. After the pressure on the roller is released, the rotating shaft resets under its own elasticity and drives the roller to reset. The overall structure is relatively simple.

[0033] The housing also includes a support plate that extends through the main control board. The support plate has a notch for the other end of the rotating shaft to pass through, and the setting switch is located on the side of the support plate furthest from the rotary encoder. This design both limits the movement of the rotating shaft and supports it when the setting switch is triggered, preventing breakage.

[0034] The second support includes a fixed frame and a floating frame. The fixed frame includes two spaced-apart fixed pillars. One end of a rotating shaft is fitted with a torsion spring, and the two ends of the torsion spring are hooked and supported on the two fixed pillars respectively. The other end of the rotating shaft is rotatably engaged with the floating frame. The floating frame corresponds to a setting switch. Pressing the roller drives the floating frame to move and triggers the setting switch. In this design, when the roller is pressed, the torsion spring is compressed, the floating frame moves, and the setting switch is triggered. When the pressure on the roller is released, the torsion spring resets, driving the floating frame and roller to return to their original positions.

[0035] The roller includes a stop surface coaxially mounted with the rotating shaft. The stop surface is a circumferentially extending wave-like surface. A stop lever is also located inside the housing. One end of the stop lever is fixed to a floating frame, while the other end elastically abuts against the stop surface. This design means that when the roller is rolled, the other end of the stop lever slides from the trough to the crest of the wave, generating resistance to the roller's movement. The greater force applied to the roller is the tactile feedback. As the other end of the stop lever leaves the crest, the force applied to the roller decreases. This allows the user to clearly perceive a good tactile feedback while rolling the roller, thus improving the user experience.

[0036] The main control board is also connected to an up switch and a down switch. The hand controller for the electric height-adjustable desk also includes two buttons, one for each of the up switch and one for the down switch. Pressing the button triggers either the up switch or the down switch to control the electric height-adjustable desk to rise or fall. This design allows for height control of the electric height-adjustable desk even if the rollers get stuck or damaged, thus improving the user experience.

[0037] The button includes a pressing part and a fixing part. The fixing part is fixed inside the housing, while the pressing part is suspended. The pressing part has a trigger post extending towards the main control board, which triggers the up switch or down switch. This design uses the button's own elastic deformation to reset the pressing part and the trigger post, thus disengaging the up switch or down switch. This eliminates the need for a spring mechanism, thereby reducing the number of parts and assembly steps in the controller.

[0038] The buttons are located inside the housing, which has clearance holes to allow the pressing part to be exposed on the outside. This design not only makes it convenient for users to press the pressing part, but also effectively protects the buttons, preventing the unsupported end from being accidentally pried off. The two buttons are located on either side of the scroll wheel. This layout is logical and facilitates blind operation.

[0039] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. [Attached Image Description]

[0040] The invention will be further described below with reference to the accompanying drawings:

[0041] Figure 1 This is an exploded view of the hand controller in Embodiment 1 of the present invention;

[0042] Figure 2 This is a structural diagram of the internal structure of the hand controller after the cover is opened in Embodiment 1 of the present invention;

[0043] Figure 3 This is a structural diagram of the hand controller after removing the cover and buttons in Embodiment 1 of the present invention;

[0044] Figure 4 for Figure 3 Exploded view;

[0045] Figure 5 This is a cross-sectional view of the hand controller in Embodiment 1 of the present invention. Figure 1 ;

[0046] Figure 6 This is a cross-sectional view of the hand controller in Embodiment 1 of the present invention. Figure 2 ;

[0047] Figure 7 This is a cross-sectional view of the hand controller in Embodiment 1 of the present invention. Figure 3 ;

[0048] Figure 8 This is a cross-sectional view of the hand controller in Embodiment 1 of the present invention. Figure 4 ;

[0049] Figure 9 This is an internal structural diagram of the hand controller in Embodiment 2 of the present invention;

[0050] Figure 10 for Figure 9 A sectional view;

[0051] Figure 11 This is an internal structural diagram of the hand controller in Embodiment 3 of the present invention;

[0052] Figure 12 for Figure 11 A sectional view;

[0053] Figure 13 This is a structural diagram of the hand controller installed on the desktop board in Embodiment 4 of the present invention.

[0054] Figure label:

[0055] 001. Clearance; 002. Desktop; 100. Housing; 110. Base; 111. Support plate; 112. U-shaped limit sleeve; 120. Cover; 121. Clearance hole; 130. Elastic element; 140. Guide sleeve; 150. Limit plate; 160. Guide plate; 200. Main control board; 210. Setting switch; 300. Rotary encoder; 310. Input shaft sleeve; 400. Grating encoder; 410. Infrared transmitter; 420. Infrared receiver; 500. Lifting switch; 600, Downward switch; 700, Roller; 701, Grid; 710, Rotating shaft; 720, Gear position surface; 800, Button; 810, Pressing part; 811, Trigger post; 820, Fixing part; 900, First bracket; 910, Roller groove; 920, Cavity; 930, Rotating shaft groove; 940, Limiting protrusion; 950, Guide rib; 1100, Floating frame; 1101, Protruding post; 1110, Limiting protrusion; 1200, Fixing support; 1300, Torsion spring; 1400, Gear position lever.

Detailed Implementation Methods

[0056] The present invention provides a hand controller for an electric height-adjustable desk, including a housing and a main control board disposed within the housing. The housing is provided with rollers for controlling the height of the electric height-adjustable desk. The main control board is connected to an encoder that converts the rotation angle of the rollers into an electrical signal. The main control board controls the height of the electric height-adjustable desk according to the electrical signal.

[0057] When using the hand controller of this invention, the height of the electric height-adjustable table can be controlled by rolling the rollers, thereby eliminating the need for up and down buttons, reducing the overall size of the hand controller and manufacturing costs. In addition, the method of controlling the height of the electric height-adjustable table by rolling the rollers also makes it convenient for users to operate blindly, making operation more convenient and more fun.

[0058] The technical solutions of the embodiments of the present invention will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present invention.

[0059] Example 1

[0060] Reference Figures 1 to 8 As shown, the electric height-adjustable desk in this embodiment uses a hand controller comprising a housing 100 and a main control board 200. The housing 100 includes a base 110 and a cover 120. The main control board 200 is disposed inside the housing 100 and fixed to the base 110. In this embodiment, a partially exposed roller 700 for controlling the height of the electric height-adjustable desk passes through the housing 100, i.e., the roller 700 passes through the cover 120. The main control board 200 is connected to an encoder that converts the rotation angle of the roller 700 into an electrical signal. The main control board 200 controls the height of the electric height-adjustable desk according to the electrical signal. In this way, when using the hand controller, the height of the electric height-adjustable desk can be controlled by rolling the roller 700 in both directions, thereby eliminating the need for up and down buttons, reducing the overall size of the hand controller and lowering manufacturing costs. In addition, controlling the height of the electric height-adjustable desk by rolling the roller 700 also facilitates blind operation, making operation more convenient and more fun.

[0061] In this embodiment, the main control board 200 is also connected to a setting switch 210. A roller 700 is elastically mounted to float relative to the setting switch 210. Pressing the roller 700 triggers the setting switch 210. With this design, when the electric height-adjustable desk rises or falls to a suitable position, pressing the roller 700 triggers the setting switch 210, setting the current desktop position of the electric height-adjustable desk to the preferred position. This way, the desk will stop rising or falling when it reaches the preferred position the next time it is used, thereby improving the user experience.

[0062] Specifically, the encoder in this embodiment is a rotary encoder 300, which includes a code disk and an input sleeve 310 connected to the code disk. A first bracket 900 is elastically installed inside the housing 100, and a switch 210 is correspondingly provided on the first bracket 900. The rotary encoder 300 is fixed on the first bracket 900. The roller 700 is provided with a rotating shaft 710. One end of the rotating shaft 710 has a circular cross-section, which is rotatably engaged with the first bracket 900. The other end of the rotating shaft 710 is inserted into the input sleeve 310. The input sleeve 310 has a non-circular mating hole, and the cross-sectional shape of the other end of the rotating shaft 710 is adapted to the shape of the mating hole. In this way, not only can the rotating shaft 710 and the input sleeve 310 rotate synchronously, thereby driving the code disk inside the rotary encoder 300 to rotate synchronously while the roller 700 is rolling; it can also make the roller 700 rotate relative to the housing 100 through the rotatable engagement of the rotating shaft 710 and the first bracket 900, so that the user can drive the roller 700 to rotate around the axis of its rotating shaft 710. Since the first bracket 900 is elastically installed inside the housing 100, when the roller 700 is pressed, the first bracket 900 can be moved by the roller 700 and the setting switch 210 can be triggered. After the pressing of the roller 700 is released, the first bracket 900 is reset under the action of elastic restoring force, so that the roller 700 is reset.

[0063] Furthermore, the first bracket 900 in this embodiment is also provided with a roller groove 910, a cavity 920, and a shaft groove 930. The shaft groove 930 and the cavity 920 are respectively located on both sides of the roller groove 910. The roller groove 910 is open on the side facing the cover 120, and the cavity 920 is open on the side facing the cover 120. The shaft groove 930 is a semi-circular groove open on the side facing the cover 120. This design allows the rotary encoder 300 to be easily installed in the cavity 920, part of the roller 700 to be confined in the roller groove 910, and the shaft 710 to be placed in the shaft groove 930 so that the shaft 710 rotates and engages with the shaft groove 930. This facilitates the installation of the rotary encoder 300, the roller 700, and the shaft 710. In addition, the cavity 920 also provides a limit for the rotary encoder 300, and the roller groove 910 provides a limit for the roller 700, without the need for other structures for fixation.

[0064] like Figure 4 , Figures 6 to 8As shown, in this embodiment, the base 110 is also provided with an elastic element 130 that penetrates the main control board 200. The elastic element 130 is a return spring. The elastic element 130 is pressed between the first bracket 900 and the base 110. This design allows for the elastic installation of the first bracket 900. When the roller 700 is pressed, the first bracket 900 moves and compresses the elastic element 130, so that the first bracket 900 triggers the setting switch 210. After the roller 700 is released, the elastic element 130 drives the first bracket 900 and the roller 700 to reset. In addition, in this embodiment, a guide sleeve 140 is provided on the outside of the elastic element 130. The guide sleeve 140 is integrally formed with the base 110. The guide sleeve 140 radially limits the elastic element 130, which can prevent the elastic element 130 from tilting when it extends or retracts.

[0065] In order to enable the user to trigger the setting switch 210 by lightly pressing the scroll wheel 700, the base 110 in this embodiment is also provided with a limiting plate 150 that penetrates the main control board 200. The limiting plate 150 is provided with a limiting hole. The first bracket 900 is provided with a limiting protrusion 940 that slides with the limiting hole. The limiting protrusion 940 is provided with a guide slope on the side facing the main control board 200 to facilitate the smooth insertion of the limiting protrusion 940 into the limiting hole. Thus, by setting the height of the limiting hole, the movement distance of the first bracket 900 can be limited. In this embodiment, the height of the limiting hole is set to be relatively low to control the movement distance of the first bracket 900 within a small distance, so that the user can trigger the setting switch 210 by lightly pressing the scroll wheel 700.

[0066] It is understood that in other embodiments of the present invention, the limiting protrusion is provided on the limiting plate and the limiting hole is provided on the first bracket. In this way, the movement distance of the first bracket can also be controlled.

[0067] like Figure 3 As shown, to prevent the first support 900 from shaking excessively during movement, which could cause the roller 700 to jam against the housing 100 and prevent smooth rolling, the base 110 in this embodiment is also provided with a guide plate 160 that penetrates the main control board 200. The four guide plates 160 are distributed on the outer sides of the four corners of the first support 900. The guide plates 160 are provided with guide grooves, and the first support 900 is provided with guide ribs 950 that slide with the guide grooves. By limiting the guide ribs 950 in the horizontal direction through the guide grooves, excessive shaking can be prevented when the first support 900 moves, thereby preventing the roller 700 from jamming against the housing 100.

[0068] It is understood that in other embodiments of the present invention, the guide groove may also be provided on the first support, and the corresponding guide rib may be provided on the guide plate. This design can also prevent the first support from shaking when it moves.

[0069] Finally, as Figure 1 , Figure 2 and Figure 5 As shown, the main control board 200 in this embodiment is also connected to an up switch 500 and a down switch 600. Both the up switch 500 and the down switch 600 are microswitches. The hand controller also includes two buttons 800 that correspond one-to-one with the up switch 500 and the down switch 600, respectively. Pressing the button 800 triggers either the up switch 500 or the down switch 600 to control the electric height-adjustable table to rise or fall. That is, when the button 800 corresponding to the up switch 500 is pressed, the electric height-adjustable table rises; when the button 800 corresponding to the down switch 600 is pressed, the electric height-adjustable table falls. With this design, even if the roller 700 gets stuck or damaged, the height of the electric height-adjustable table can be controlled by pressing the button 800, thereby improving the user experience.

[0070] In this embodiment, the button 800 includes a pressing part 810 and a fixing part 820. The button 800 is a button plate. The fixing part 820 is fixed to the base 110 by screws or by clips. The pressing part 810 is suspended. The pressing part 810 is provided with a trigger post 811 extending towards the main control board 200. The trigger posts 811 of the two buttons 800 correspond to the up switch 500 and the down switch 600, respectively. When the pressing part 810 corresponding to the up switch 500 is pressed, the trigger post 811 on the pressing part 810 is... 11. The rise switch 500 is triggered to control the electric height-adjustable table to rise. When the pressing part 810 of the corresponding fall switch 600 is pressed, the trigger pin 811 on the pressing part 810 triggers the fall switch 600 to control the electric height-adjustable table to fall. After the pressing part 810 is released, the pressing part 810 and the trigger pin 811 are reset by the elastic deformation of the button 800 itself, so that the rise switch 500 or the fall switch 600 is disconnected. This eliminates the need for an elastic element, thereby reducing the number of parts and assembly steps of the hand controller. In order to optimize the layout and facilitate blind operation, the two buttons 800 in this embodiment are located on both sides of the roller 700. In order to simplify assembly, the two fixing parts 820 are connected in this embodiment so that the two buttons 800 form a U-shaped plate.

[0071] To prevent the suspended end of the button 800 from being accidentally pried off, the button 800 in this embodiment is located inside the housing 100 to effectively protect the button 800. At the same time, the cover 120 is provided with a clearance hole 121 to expose the pressing part 810 on the outside, so as to facilitate the user to press the pressing part 810.

[0072] It is understood that in other embodiments of the present invention, the two button plates form a cover, and a through hole is formed between the two button plates for the roller to pass through. This design can further reduce the number of parts of the hand controller, thereby reducing the manufacturing cost of the hand controller.

[0073] It is understood that in other embodiments of the present invention, the button is a button cap, which is disposed through the cover. A button spring is press-fitted between the button cap and the main control board. One end of the button spring is fitted on the outside of the up switch or down switch, and the other end is inserted into the button cap.

[0074] It is understood that in other embodiments of the present invention, in order to reduce the size of the hand controller and reduce the manufacturing cost of the hand controller, the up switch, the down switch, and the two buttons corresponding to the up switch and the down switch can be omitted.

[0075] It is understood that in other embodiments of the present invention, the switch may be omitted, in which case the roller does not need to be flexibly installed.

[0076] Example 2

[0077] like Figures 9 to 10 As shown, compared with Embodiment 1, the difference in this embodiment is that the rotary encoder 300 is welded and fixed on the main control board 200, one end of the rotating shaft 710 is connected to the input shaft sleeve 310 and rotates synchronously, and the other end is correspondingly provided with a switch 210. In this embodiment, the rotating shaft 710 has a certain elasticity to realize the elastic installation of the roller 700. In this way, after pressing the roller 700, the other end of the rotating shaft 710 can deform and move and trigger the setting switch 210. After the pressing of the roller 700 is canceled, the rotating shaft 710 resets under its own elasticity and drives the roller 700 to reset. The overall structure is relatively simple.

[0078] To horizontally limit the other end of the rotating shaft 710 and prevent it from breaking due to excessive force when the roller 700 is rolled, the base 110 in this embodiment is also provided with a support plate 111 that penetrates the main control board 200. The support plate 111 has a notch for the other end of the rotating shaft 710 to pass through, thereby achieving horizontal limitation of the other end of the rotating shaft 710. The setting switch 210 is located on the side of the support plate 111 away from the rotary encoder 300. Under normal conditions, there is a movable gap 001 between the other end of the rotating shaft 710 and the notch. The height of the movable gap 001 is equal to the distance that the other end of the rotating shaft 710 deforms and moves when the setting switch 210 is triggered. With this design, after pressing the roller 700, the setting switch 210 can be triggered after the other end of the rotating shaft 710 moves a certain distance. At the same time, the support plate 111 can support the rotating shaft 710 when the setting switch 210 is triggered, so as to prevent the rotating shaft 710 from breaking.

[0079] Example 3

[0080] like Figures 11 to 12As shown, compared with Embodiment 1 and Embodiment 2, the difference in this embodiment is that: the encoder is a grating encoder 400, which includes an infrared transmitter 410 and an infrared receiver 420 arranged opposite to each other. A second bracket penetrating the main control board 200 is also provided on the base 110. The second bracket includes a fixed frame and a floating frame 1100, which are arranged opposite to each other. The floating frame 1100 has a downwardly extending protrusion 1101, and the setting switch 210 is set corresponding to the protrusion 1101. The fixed frame includes two spaced-apart fixed supports 1200, and the infrared receiver 420 is located between the two fixed supports 1200. A torsion spring 1300 is fitted onto one end of the rotating shaft 710. Both ends of 300 are hooked and supported on two fixed pillars 1200 respectively. One end of the rotating shaft 710 is rotatably engaged with the mounting hole on the floating frame 1100, thereby realizing the rotating shaft 710 is rotatably mounted on the second bracket. The floating frame 1100 can be positioned above the infrared transmitter 410 by the support of the torsion spring 1300. The elastic mounting of the floating frame 1100, i.e. the elastic mounting of the roller 700, can be realized by the extension and retraction of the torsion spring 1300. In addition, in this embodiment, the roller 700 is located between the infrared transmitter 410 and the infrared receiver 420. The roller 700 is provided with multiple grids 701 circumferentially spaced to allow infrared rays to pass through. This design can also realize the conversion of the rotation angle of the roller 700 into an electrical signal. After pressing the roller 700, the rotating shaft 710 compresses the torsion spring 1300 and drives the floating frame 1100 to move, so that the protrusion 1101 triggers the setting switch 210. After the pressing of the roller 700 is canceled, the torsion spring 1300 resets to drive the floating frame 1100 and the roller 700 to reset.

[0081] In addition, to prevent the floating frame 1100 from swaying horizontally when it floats, the base 110 in this embodiment is also provided with two U-shaped limiting sleeves 112 that penetrate the main control board 200. The openings of the U-shaped limiting sleeves 112 are arranged opposite to each other. The floating frame 1100 is provided with limiting ribs 1110 that are inserted into the U-shaped limiting sleeves 112. This design can prevent the floating frame 1100 from swaying too much when it moves, thereby avoiding the phenomenon that the roller 700 and the housing 100 get stuck and cannot roll smoothly.

[0082] Finally, the roller 700 in this embodiment includes a shift surface 720 coaxially arranged with the rotating shaft 710. The central angle of the shift surface 720 is 360°. The shift surface 720 is a circumferentially extending wave surface, and the number of wave crests is the same as the number of grids 701. The housing 100 is also provided with a shift lever 1400, which is a metal wire. One end of the shift lever 1400 is fixed on the floating frame 1100, and the other end extends upward and elastically abuts against the shift surface 720. With this design, when the roller 700 is rolled, when the other end of the shift lever 1400 slides from the trough of the wave surface to the wave crest, it will generate a certain resistance to the rolling of the roller 700. The larger force applied to the roller 700 is the feel. When the other end of the shift lever 1400 leaves the wave crest, the force applied by the user to the roller 700 decreases. This allows the user to clearly perceive a good feedback feel during the rolling of the roller 700, thereby improving the user experience.

[0083] Example 4

[0084] like Figure 13 As shown, this embodiment also provides an electric height-adjustable desk, including a height-adjustable column, a desktop 002, and a hand controller as described in any of the above embodiments. The hand controller is installed on the bottom surface of the desktop 002 and electrically connected to the height-adjustable column. The base 110 abuts against the bottom surface of the desktop 002 to hide the hand controller and improve the product's appearance. The casters 700 protrude downwards from the housing 100 to facilitate blind operation by the user. In the embodiment with a button 800, this design also allows the user to easily press the button 800 to control the height-adjustable column to raise and lower the desktop.

[0085] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the present invention will be included within the scope of the claims.

Claims

1. An electric height-adjustable desk, characterized in that, The device includes a desktop panel and a hand controller for an electric height-adjustable desk. The hand controller is installed on the bottom surface of the desktop panel. The hand controller includes a housing and a main control board disposed within the housing. The housing is provided with rollers for controlling the height of the electric height-adjustable desk. The main control board is connected to an encoder that converts the rotation angle of the rollers into an electrical signal. The main control board controls the height of the electric height-adjustable desk according to the electrical signal. The main control board is also connected to a setting switch. The rollers are elastically mounted to float relative to the setting switch. Pressing the rollers triggers the setting switch.

2. The electric height-adjustable desk as described in claim 1, characterized in that, The encoder is a rotary encoder, which has an input shaft sleeve and a roller with a rotating shaft. The rotating shaft is connected to the input shaft sleeve and rotates synchronously.

3. The electric height-adjustable desk as described in claim 2, characterized in that, A first bracket is elastically installed inside the housing. The first bracket corresponds to the setting switch. The rotating shaft is rotatably mounted on the first bracket. The rotary encoder is fixed on the first bracket. Pressing the roller drives the first bracket to move and triggers the setting switch.

4. The electric height-adjustable desk as described in claim 3, characterized in that, The first bracket is provided with a roller groove, a cavity and a shaft groove. The shaft groove and the cavity are respectively located on both sides of the roller groove. The rotary encoder is installed in the cavity. Part of the roller is located in the roller groove. The shaft is rotatably engaged with the shaft groove.

5. An electric height-adjustable desk as described in claim 4, characterized in that, The housing also includes an elastic element that penetrates the main control board, and the elastic element is press-fitted between the first bracket and the housing.

6. An electric height-adjustable desk as described in claim 3, characterized in that, The housing also includes a limiting plate that penetrates the main control board. One of the limiting plate and the first bracket is provided with a limiting hole, and the other is provided with a limiting protrusion that slides with the limiting hole.

7. An electric height-adjustable desk as described in claim 3, characterized in that, The housing is also provided with a guide plate that penetrates the main control board. One of the guide plate and the first bracket is provided with a guide groove, and the other is provided with a guide rib that slides with the guide groove.

8. An electric height-adjustable desk as described in claim 2, characterized in that, The rotary encoder is welded and fixed to the main control board. One end of the rotating shaft is connected to the input shaft sleeve and rotates synchronously. The other end corresponds to the setting switch. Pressing the roller causes the other end of the rotating shaft to deform and move, triggering the setting switch.

9. An electric height-adjustable desk as described in claim 8, characterized in that, The housing also includes a support plate that penetrates the main control board. The support plate has a notch for the other end of the rotating shaft to pass through. The setting switch is located on the side of the support plate away from the rotary encoder.

10. An electric height-adjustable desk as described in claim 1, characterized in that, The encoder is a grating encoder, which includes an infrared transmitter and an infrared receiver arranged opposite to each other. A second bracket is provided inside the housing, which penetrates the main control board. The roller is provided with a rotating shaft, which is rotatably mounted on the second bracket and positions the roller between the infrared transmitter and the infrared receiver. The roller is provided with a plurality of grids spaced circumferentially to allow infrared light to pass through.

11. An electric height-adjustable desk as described in claim 10, characterized in that, The second bracket includes a fixed frame and a floating frame. The fixed frame includes two spaced-apart fixed pillars. One end of the rotating shaft is fitted with a torsion spring. The two ends of the torsion spring are hooked and supported on the two fixed pillars respectively. The other end of the rotating shaft is rotatably engaged with the floating frame. The floating frame corresponds to the setting switch. Pressing the roller drives the floating frame to move and triggers the setting switch.

12. An electric height-adjustable desk as described in claim 11, characterized in that, The roller includes a stop surface coaxially arranged with the rotating shaft. The stop surface is a circumferentially extending wave surface. The housing also has a stop rod, one end of which is fixed to the floating frame, and the other end of which elastically abuts against the stop surface.

13. An electric height-adjustable desk, characterized in that, The device includes a desktop panel and a hand controller for an electric height-adjustable desk. The hand controller is mounted on the bottom surface of the desktop panel. The hand controller includes a housing and a main control board located within the housing. The housing has rollers for controlling the height of the electric height-adjustable desk. The main control board is connected to an encoder that converts the rotation angle of the rollers into an electrical signal. The main control board controls the height of the electric height-adjustable desk based on the electrical signal. The main control board is also connected to an up switch and a down switch. The hand controller also includes two buttons that correspond one-to-one with the up switch and the down switch, respectively. Pressing the button triggers the up switch or the down switch to control the electric height-adjustable desk to rise or fall.

14. An electric height-adjustable desk as described in claim 13, characterized in that, The button includes a pressing part and a fixing part. The fixing part is fixed inside the housing, and the pressing part is suspended. The pressing part is provided with a trigger post extending towards the main control board. The trigger post is used to trigger the up switch or the down switch.

15. An electric height-adjustable desk as described in claim 14, characterized in that, The button is located inside the housing, and the housing has a clearance hole for exposing the pressing part to the outside.

16. An electric height-adjustable desk as described in claim 14, characterized in that, The two buttons are located on either side of the scroll wheel.

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