A height-adjustable screen's power mechanism

Abstract

The utility model discloses a height adjustable screen's power assisting mechanism, including base, shielding piece, power assisting elastic piece and flexible connecting piece, base transverse arrangement, shielding piece can be on its up and down, power assisting elastic piece one end is fixed in base, and the other end is linked with shielding piece lower end through flexible connecting piece, and shielding piece provides the upward spring force, this mechanism through the cooperation of power assisting elastic piece and flexible connecting piece, when shielding piece up and down, continuously exert upward spring force, effectively offset screen dead weight and load resistance, reduce user lifting operation force, solve traditional full mechanical structure operation hard problem, make up and down more relaxed smooth, improve the use comfort degree, simultaneously, power assisting elastic piece can alleviate mechanical drive jam, and flexible connecting piece enhances force transmission stability, ensures that shielding piece stably goes up and down.

Description

Technical Field

[0001] This utility model relates to the field of furniture, and in particular to an assist mechanism for a height-adjustable screen. Background Technology

[0002] In modern office settings, desktop partitions are commonly used as devices for dividing desktop space, protecting privacy, and providing visual buffers. The practicality and convenience of their height adjustment function are crucial. However, traditional desktop partitions generally have functional defects in height adjustment, making it difficult to meet diverse office needs.

[0003] Most existing desktop partitions are designed with a fixed height, which cannot be dynamically adjusted according to the user's height, work environment, or collaboration needs. Taller users may find their desktop activities disturbed by others' view due to a partition that is too low, resulting in insufficient privacy protection. Shorter users may find their visual oppression due to a partition that is too high, affecting natural communication with colleagues. When temporary collaboration or group discussions are needed, fixed-height partitions cannot be quickly lowered to create an open atmosphere. However, when focusing on work, they cannot be raised to enhance privacy, resulting in a "one-size-fits-all" user experience.

[0004] Some desktop screens that attempt to achieve height adjustment still have various defects. Traditional height adjustment solutions mostly rely on mechanical structures such as gears, racks, screws, and nuts. Screens with all-mechanical height adjustment solutions are prone to jamming problems. In addition, due to the weight and load of the screen itself, it is difficult to raise the height of the screen. Users find the height adjustment operation very strenuous and the user experience is poor. Therefore, there is an urgent need for a power-assisted mechanism that can provide assistance and safety. Summary of the Invention

[0005] To address the aforementioned technical problems, this utility model provides an assist mechanism for a height-adjustable screen, comprising a base, a blocking component, an assist elastic component, and a flexible connector. The base is arranged horizontally, and the blocking component can be raised and lowered on it. One end of the assist elastic component is fixed to the base, and the other end is connected to the lower end of the blocking component via the flexible connector, providing an upward elastic force to the blocking component. Through the synergy of the assist elastic component and the flexible connector, this mechanism continuously applies an upward elastic force when the blocking component is raised and lowered, effectively offsetting the screen's own weight and load resistance, reducing the user's lifting effort, solving the problem of laborious operation in traditional fully mechanical structures, making raising and lowering easier and smoother, and improving user comfort. At the same time, the assist elastic component can alleviate mechanical transmission jamming, and the flexible connector enhances the stability of force transmission, ensuring smooth raising and lowering of the blocking component.

[0006] The technical solution of this utility model is implemented as follows:

[0007] An assist mechanism for a height-adjustable screen includes a base, a blocking member that is raised and lowered on the base, an assist elastic member whose elasticity varies with length, and a flexible connector whose length remains constant. The base is arranged in a left-right direction. One end of the assist elastic member is fixedly connected to the base, and the other end of the assist elastic member is connected to one end of the flexible connector. The other end of the flexible connector is connected to the lower end of the blocking member. The assist elastic member provides an upward elastic force to the blocking member through the flexible connector.

[0008] By combining a flexible connecting component with an elastic element whose elasticity varies with length, an upward elastic force can be continuously provided during the lifting and lowering of the screen, effectively offsetting the resistance generated by the screen's own weight and load. This significantly reduces the operating force required for the user to lift the screen, avoiding the problem of strenuous operation caused by the weight of traditional all-mechanical structures. This makes the lifting and lowering process easier and smoother, greatly improving user comfort. The elastic assist characteristic of the elastic element can effectively alleviate the possible jamming phenomenon during mechanical transmission, and the setting of the flexible connecting component further enhances the stability of force transmission, ensuring smooth lifting and lowering of the screen.

[0009] Preferably, the flexible connector includes a horizontal section located in the base and a vertical section exposed in the base. The assisting elastic element and the horizontal section are both arranged in the left-right direction, and the sum of their lengths remains constant. When the blocking member slides downwards relative to the base, the length of the vertical section increases, the length of the horizontal section decreases, and the assisting elastic element becomes longer and its elastic force increases. By utilizing the constant length of the flexible connector, the assisting elastic element undergoes a length change when the blocking member moves, thereby altering its elastic force. When the blocking member descends, the increased elastic force provides cushioning; when the blocking member rises from its lower position, the assisting elastic element provides a greater upward elastic force for assistance.

[0010] Preferably, the assisting elastic element is located inside the base, which also contains a pulley. The flexible connector abuts against the pulley and is bent and steered by the pulley. This makes the sliding of the flexible connector smoother.

[0011] Preferably, a wheel seat is fixed inside the base, and the pulley is rotatably mounted on the wheel seat.

[0012] Preferably, the base is provided with clearance holes, and the flexible connector extends out of the base from the clearance holes.

[0013] As a preferred option, the elastic element is a tension spring.

[0014] Preferably, the flexible connector is a pull rope.

[0015] Preferably, the base contains a slider, and the assistive elastic element is connected to the slider. The slider is slidably positioned within the base in the left-right direction. An adjustment mechanism is provided between the base and the slider, and the position of the slider in the left-right direction is locked by the adjustment mechanism. The slider and adjustment mechanism can be used to adjust the basic elastic force of the assistive elastic element, adapting to people of different strength levels, making it easier for people with less strength to use.

[0016] Preferably, the adjustment structure includes an adjustment groove and an adjustment bolt. The adjustment groove is arranged on the base in a left-right direction, and the adjustment bolt is locked onto the slider via the adjustment groove. When the adjustment bolt is loosened, the slider can slide to adjust the elastic force. When the adjustment bolt is tightened, the slider is locked to maintain the adjusted elastic force.

[0017] Preferably, the shielding component includes a connecting post, which is arranged in the middle of the shielding component in a left-right direction. A set of elastic assisting elements and flexible connecting elements are provided on the bases on both sides of the connecting post to balance the elastic forces on both sides.

[0018] The design starting point, concept, and beneficial effects of this utility model, which adopts the above technical solution, are as follows:

[0019] By combining a flexible connecting component with an elastic element whose elasticity varies with length, an upward elastic force can be continuously provided during the lifting and lowering of the screen, effectively offsetting the resistance generated by the screen's own weight and load. This significantly reduces the operating force required for the user to lift the screen, avoiding the problem of strenuous operation caused by the weight of traditional all-mechanical structures. This makes the lifting and lowering process easier and smoother, greatly improving user comfort. The elastic assist characteristic of the elastic element can effectively alleviate the possible jamming phenomenon during mechanical transmission, and the setting of the flexible connecting component further enhances the stability of force transmission, ensuring smooth lifting and lowering of the screen. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the lifting table when the screen device is in a high position in an embodiment of the present invention. Figure 1 ;

[0021] Figure 2 This is a three-dimensional structural diagram of the lifting table when the screen device is in a high position in an embodiment of the present invention. Figure 2 ;

[0022] Figure 3 This is a side view of the lifting table when the screen device is in a high position in an embodiment of the present invention;

[0023] Figure 4 This is a three-dimensional structural diagram of the lifting table when the screen device is in a low position in an embodiment of the present invention. Figure 1 ;

[0024] Figure 5This is a three-dimensional structural diagram of the lifting table when the screen device is in a low position in an embodiment of the present invention. Figure 2 ;

[0025] Figure 6 This is a three-dimensional structural diagram of the movable screen device in an embodiment of the present invention. Figure 1 ;

[0026] Figure 7 This is a three-dimensional structural diagram of the movable screen device in an embodiment of the present invention. Figure 2 ;

[0027] Figure 8 This is a cross-sectional view of the movable screen device in an embodiment of the present invention;

[0028] Figure 9 This is a three-dimensional structural diagram of the connecting column in an embodiment of the present invention;

[0029] Figure 10 This is a three-dimensional structural diagram of the present invention, in which the lifting mechanism and locking mechanism are arranged in the connecting column in the embodiment;

[0030] Figure 11 The explosion of the locking mechanism in the embodiment of this utility model Figure 1 ;

[0031] Figure 12 The explosion of the locking mechanism in the embodiment of this utility model Figure 2 ;

[0032] Figure 13 This is a three-dimensional structural diagram of the assist mechanism when the screen device is in a high position in an embodiment of the present invention;

[0033] Figure 14 This is a three-dimensional structural diagram of the flexible connector extending from the base in an embodiment of the present invention;

[0034] Figure 15 This is a three-dimensional structural diagram of the assist mechanism when the screen device is in a low position in an embodiment of this utility model.

[0035] The attached figures are labeled as follows: Tabletop 1; Table frame 2; Lifting table leg 3; Covering component 4; Screen panel 41; Connecting column 42; Outer shell 421; Connecting plate 4210; Inner shell 422; Baffle 4220; Lifting groove 423; Window 424; Enclosing component 43; Slide groove 44; Shelf 5; Vertical plate 51; Notch 510; Connecting piece 6; Base 7; Mounting component 71; Guide component 72; Wheel seat 73; Pulley 74; Clearance hole 75; Slide Block 76; Adjustment groove 77; Rotating component 8; Fixing component 9; Bearing 10; Sleeve 11; Limiting protrusion 111; Switch 12; Control unit 121; Rotating unit 122; Limiting part 1221; Abutting part 1222; Locking component 13; Locking part 131; Sliding protrusion 1311; Follower part 132; Locked component 14; Engaging tooth 15; Assisting elastic component 16; Flexible connecting component 17; Horizontal section 171; Vertical section 172. Detailed Implementation

[0036] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0037] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0038] In the description of this utility model, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] The specific implementation of this utility model is as follows:

[0040] like Figure 1-8 As shown, this utility model provides an assist mechanism for a height-adjustable screen. This assist mechanism is used in a screen device, which is applied to a height-adjustable table. The height-adjustable table includes a tabletop 1, a table frame 2, height-adjustable table legs 3, and a movable screen device. The movable screen device includes a blocking component 4 and a base 7. The base 7 is arranged horizontally in the left-right direction and is configured as the main support of the movable screen device. The blocking component 4 is slidably mounted on the base 7 and serves as the main body of the screen, i.e., to block the view. The tabletop 1 is located above the table frame 2, and the height-adjustable table legs 3 are located below the table frame 2. Each of the left and right ends of the base 7 is provided with a forward-extending mounting component 71. The mounting component 71 is fixedly connected to the table frame 2 by screws, thereby realizing the installation of the movable screen device with the tabletop 1 or the height-adjustable table legs 3 fixing tube. The blocking component 4 is located behind the tabletop 1, and the base 7 is located behind the blocking component 4.

[0041] The movable screen device also includes a lifting mechanism, a locking mechanism, and an assist mechanism. The movable screen device is a device in which the blocking part 4 can be raised and lowered, so a lifting mechanism is needed to realize its raising and lowering. After the blocking part 4 has completed raising and lowering, a locking mechanism is needed to lock it to maintain the height of the blocking part 4 at this time. The blocking part 4 of the movable screen device is manually controlled, so an assist mechanism is also needed to realize labor-saving operation.

[0042] Specifically:

[0043] like Figure 6-10 As shown, the shielding component 4 includes a screen panel 41 and a connecting column 42. The connecting column 42 is vertically arranged in the middle of the screen panel 41 in the left-right direction. The connecting column 42 is provided with a lifting groove 423 for avoiding the base 7. The base 7, the lifting mechanism, and the locking mechanism are all located in the connecting column 42. The base 7 is a hollow structure that is open in the front and closed in the back. The lifting mechanism, the locking mechanism, and the assist mechanism are basically located inside the connecting column 42 and the base 7. The connecting column 42 includes an outer shell 421 and an inner shell 422. The inner shell 422 is fixedly connected to the screen panel 41, and the outer shell 421 is fixedly connected to the inner shell 422. The left and right ends of the inner shell 422 extend towards the outer shell 421 with baffles 4220. The upper and lower ends of the outer shell 421 both extend towards the outer shell 421 with connecting plates 4210. The connecting plates 4210 are located outside the baffles 4220.

[0044] The outer edge of the screen panel 41 is provided with a surrounding member 43 that runs along its contour, which protects the screen panel 41. Slide grooves 44 are provided on the left and right sides of the surrounding member 43, and a guide member 72 is provided on the base 7. The guide member 72 is located on the side of the screen panel 41 and is disposed in the slide groove 44, with the guide member 72 slidingly engaging with the slide groove 44. The engagement between the guide member 72 and the slide groove 44 provides lifting and guiding, which is beneficial to the lifting stability of the screen panel 4. The guide member 72 is specifically disposed on the forward-extending mounting member 71. The surrounding member 43 is harder; generally, the screen panel 41 is made of wood, plastic, or glass, while the surrounding member 43 is made of metal or hard plastic to protect the screen panel 41 and prevent damage during transportation.

[0045] The lifting mechanism includes a rotating component 8 and a fixed component 9. The rotating component 8 is rotatably mounted on the shielding component 4 and rises and falls synchronously with the shielding component 4. The fixed component 9 is fixedly mounted on the base 7 and located between the baffles 4220. The rotating component 8 and the fixed component 9 are connected by a transmission. When the shielding component 4 rises and falls, the rotating component 8 rotates under the action of the fixed component 9. The lifting mechanism is a screw and nut assembly, with the rotating component 8 being the screw and the fixed component 9 being the nut. The rotating component 8 is vertically mounted in the connecting column 42 of the shielding component 4, and the rotating component 8 and the fixed component 9 are connected by a threaded transmission.

[0046] like Figure 10-12As shown, the locking mechanism is installed on the blocking member 4, and has a locked state and an unlocked state. In the unlocked state, the blocking member 4 moves up and down. In the locked state, the lifting and lowering of the blocking member 4 is locked by the rotation of the locking rotating member 8. The locking mechanism includes a sleeve 11, a switch 12, a locking member 13, and a locked member 14. The sleeve 11 is fixedly installed on the inner shell 422 and located between the two baffles 4220. A bearing 10 is provided inside the sleeve 11. One end of the rotating member 8 is installed in the bearing 10. The locked member 14 is synchronously rotated and installed at this end of the rotating member 8 and is located in the sleeve 11. The locked member 14 is located above the bearing 10 and closer to the locking member 13 than the bearing 10. The switch 12 is rotatably installed on the sleeve 11 about an axis in the left and right direction, that is, the switch 12 and the... The blocking member 4 is relatively movable, and the switch 12 is configured to control the state of the locking mechanism; the locking member 13 is floatingly disposed on the sleeve 11 and abuts against the switch 12. The locking member 13 selectively locks with the locked member 14. When the locking member 13 moves downward toward the locked member 14, it locks with the locked member 14. When the locking member 13 moves upward away from the locked member 14, it unlocks. The switch 12 has a tendency to move downward and keep the locking mechanism in the locked state. This tendency can be caused by the weight of the switch 12 and the locking member 13. In the locked state, the locking mechanism holds the rotating member 8 and keeps the blocking member 4 relatively stationary with respect to the base 7. When the switch 12 moves upward and lifts up, the locking mechanism is in the unlocked state, and the rotating member 8 can rotate so that the blocking member 4 can slide up and down relative to the base 7.

[0047] Furthermore, the locking member 13 includes a locking part 131 and a follower part 132 that are fixed to each other. The locking part 131 is slidably disposed in the sleeve 11, and the follower part 132 protrudes horizontally from the locking part 131 and is located above the switch 12. The follower part 132 is always in contact with the switch 12 and moves with the rotation of the switch 12. When the switch 12 is rotated downward, the locking member 13 slides downward accordingly, and the locking member 13 falls down and locks the locking part 131 with the locked member 14, and the locking mechanism is in the locked state. When the switch 12 is rotated upward, the locking member 13 slides upward accordingly, and the locking member 13 is lifted up and disengages the locking part 131 from the locked member 14, and the locking mechanism is in the unlocked state. Both the locking part 131 and the locked member 14 are provided with meshing teeth 15, which are arranged circumferentially on the locking part 131 and the locked member 14.

[0048] The switch 12 includes a horizontally arranged control part 121 and rotating parts 122 located on both sides of the control part 121. The rotating parts 122 are rotatably connected to the sleeve 11. The control part 121 is configured to allow the user to operate the switch 12 to rotate. The rotating part 122 has a limiting part 1221 and an abutting part 1222. The sleeve 11 has a limiting protrusion 111 corresponding to the limiting part 1221. The limiting protrusion 111 is located below the switch 12, and the limiting part 1221 is downwardly aligned with the limiting protrusion 111. When the switch 111 comes into contact, the locking member 13 and the rotating member 8 are locked together; the abutting part 1222 is located above the limiting part 1221, and the abutting part 1222 is configured to always abut against the locking member 13; the limiting protrusion 111 is inclined in the front-back direction, and the rotating part 122 is also inclined. When locked, the two abut against each other. When unlocked, the control part 121 is horizontal, which makes it easy for the user to move the blocking member 4 directly up or down; a window 424 is also provided on the connecting post 42 to expose the switch 12.

[0049] A downward pressure spring (not shown) is provided on the upper end surface of the follower part 132. The downward pressure spring abuts against the inner shell 422. The downward pressure spring is configured to always provide a spring force to the locking member 13 to slide downward, that is, to provide a spring force to the switch 12 to rotate downward.

[0050] The locking part 131 is provided with a plurality of sliding protrusions 1311. The sliding protrusions 1311 slide in cooperation with the inner wall of the sleeve 11, which can reduce friction and facilitate the sliding of the locking part 13.

[0051] like Figure 10 , 13 As shown in Figure -15, the assist mechanism is installed on the shield 4 and the base 7. The assist mechanism is configured to always provide an upward elastic force to the shield 4. An assist mechanism is provided on each side of the connecting column 42 to maintain the balance of the auxiliary lift. The assist mechanism includes an assist elastic element 16 whose elastic force varies with its length and a flexible connecting element 17 whose length is constant. One end of the assist elastic element 16 is fixedly connected to the base 7, and the other end of the assist elastic element 16 is connected to one end of the flexible connecting element 17. The other end of the flexible connecting element 17 is connected to the shield 4. The assist elastic element 16 provides an upward elastic force to the shield 4 through the flexible connecting element 17. When the shield 4 slides downward relative to the base 7, the elastic force of the assist elastic element 16 increases, and when the shield 4 slides upward relative to the base 7, the elastic force of the assist elastic element 16 decreases. The assist mechanism provides assistance when the shield 4 rises and provides cushioning when the shield 4 falls.

[0052] The flexible connector 17 is disposed at the lower end of the shield 4. The flexible connector 17 includes a horizontal section 171 located in the base 7 and a vertical section 172 exposed in the base 7. The length of the flexible connector 17 remains unchanged. The assisting elastic member 16 and the horizontal section 171 are both arranged in the left-right direction. The sum of the lengths of the horizontal section 171 and the assisting elastic member 16 remains unchanged. When the shield 4 slides downward relative to the base 7, the length of the vertical section 172 increases, the length of the horizontal section 171 decreases, and the assisting elastic member 16 becomes longer and its elasticity increases.

[0053] The assisting elastic element 16 is a tension spring, and the flexible connector 17 is a pull rope. The assisting elastic element 16 is set inside the base 7. A wheel seat 73 is fixedly provided inside the base 7. A pulley 74 is rotatably provided on the wheel seat 73. The flexible connector 17 abuts against the pulley 74 and is bent and turned by the pulley 74. The base 7 is provided with a clearance hole 75. After the flexible connector 17 is bent and turned, it extends out of the base 7 from the clearance hole 75.

[0054] The base 7 is equipped with a slider 76, and the assisting elastic element 16 is connected to the slider 76. The slider 76 is slidably disposed in the base 7 in the left and right direction. An adjustment structure is provided between the base 7 and the slider 76, and the position of the slider 76 in the left and right direction is locked by the adjustment structure. The slider 76 is used to adjust the elastic force of the assisting elastic element 16. The adjustment structure includes an adjustment groove 77 and an adjustment bolt. The adjustment groove 77 is arranged on the base 7 in the left and right direction, and the adjustment bolt is locked on the slider 76 through the adjustment groove 77.

[0055] The upper end of the shield 4 is provided with a table for placing items. Specifically, the upper end of the shield 4 is fixedly provided with a shelf 5, and the length of the shelf 5 in the front-to-back direction is greater than the thickness of the shield 4 in the front-to-back direction. The upper end of the shield 4 is provided with an L-shaped connecting piece 6, which is fixedly connected to the shield 4 and the shelf 5 respectively.

[0056] The locking mechanism is located at the upper end of the connecting column 42 and near the upper edge of the cover 4. A vertical plate 51 is provided behind the shelf 5 to prevent items from falling. A notch 510 is provided on the vertical plate 51 above the connecting column 42 or the locking mechanism. The distance between the lower end of the notch 510 and the switch 12 is configured to allow the user to cover it with one hand. The switch 12 is exposed from the window 424. When operating, the user only needs to place one hand in both the window 424 and the notch 510 at the same time, and flip the switch 12 upward and pinch the cover 4 to move it up and down to complete the lifting adjustment.

Claims

1. A support mechanism for a height-adjustable screen, characterized in that: It includes a base, a shield that is raised and lowered on the base, an elastic member with elastic force that varies with length, and a flexible connector with constant length. The base is arranged in the left-right direction. One end of the elastic member is fixedly connected to the base, the other end of the elastic member is connected to one end of the flexible connector, and the other end of the flexible connector is connected to the lower end of the shield. The elastic member provides an upward elastic force to the shield through the flexible connector.

2. The assist mechanism for the height-adjustable screen according to claim 1, characterized in that: The flexible connector includes a horizontal section located in the base and a vertical section exposed in the base. The assisting elastic element and the horizontal section are both arranged in the left-right direction, and the sum of the lengths of the horizontal section and the assisting elastic element remains unchanged. When the blocking element slides downward relative to the base, the length of the vertical section increases, the length of the horizontal section decreases, the assisting elastic element becomes longer and the elastic force increases.

3. The assist mechanism for the height-adjustable screen according to claim 1, characterized in that: The assisting elastic element is located inside the base, which also contains a pulley. The flexible connector abuts against the pulley and is bent and turned by the pulley.

4. The assist mechanism for the height-adjustable screen according to claim 3, characterized in that: A wheel seat is fixed inside the base, and the pulley is rotatably mounted on the wheel seat.

5. The assist mechanism for the height-adjustable screen according to claim 1, characterized in that: The base is provided with clearance holes, and the flexible connector extends out of the base from the clearance holes.

6. The assist mechanism for the height-adjustable screen according to claim 1, characterized in that: The elastic element is a tension spring.

7. The assist mechanism for the height-adjustable screen according to claim 1, characterized in that: The flexible connector is a pull rope.

8. The assist mechanism for the height-adjustable screen according to claim 1, characterized in that: The base is equipped with a slider, and the elastic element is connected to the slider. The slider is slidably disposed in the base in the left and right direction. An adjustment structure is provided between the base and the slider, and the position of the slider in the left and right direction is locked by the adjustment structure.

9. The assist mechanism for the height-adjustable screen according to claim 8, characterized in that: The adjustment structure includes an adjustment groove and an adjustment bolt. The adjustment groove is arranged on the base in the left-right direction, and the adjustment bolt is locked on the slider through the adjustment groove.

10. The assist mechanism for the height-adjustable screen according to claim 1, characterized in that: The shielding component includes a connecting column, which is arranged in the middle of the shielding component in the left-right direction. On the base on both the left and right sides of the connecting column, there is a set of elastic and flexible connecting components.

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