Pull rope synchronous double-column lifting table

Abstract

The utility model discloses a pull rope synchronous double-column lifting table, which comprises a table plate, two sets of telescopic assemblies, a controllable spring assembly and a transmission assembly, the telescopic assemblies comprise guide columns and lifting columns, the guide columns are arranged on the lifting columns in a sliding and sleeving manner, and the upper ends of the guide columns are fixedly connected with the table plate; the upper end of the controllable spring assembly is fixedly connected with the lifting column, and the lower end is fixedly connected with the guide column; the transmission assembly comprises a supporting rod, a first guide part, a second guide part, a third guide part and a pull rope. According to the pull rope synchronous double-column lifting table, the two sets of telescopic assemblies are driven through the transmission assembly, the telescopic amount of the telescopic assemblies is consistent, and therefore it is guaranteed that the table plate is horizontal.

Description

Technical Field

[0001] This utility model relates to the field of height-adjustable desks, and in particular to a rope-operated synchronous double-column height-adjustable desk. Background Technology

[0002] Tables are a common piece of furniture in homes. Double-column height-adjustable tables, as one type of table, have the advantages of being height-adjustable and having an adjustable desktop height. Existing double-column height-adjustable tables, as shown in the patent application number CN202220103208.6, include a tabletop, a support tube, a lifting tube, and a controllable spring assembly. Two controllable spring assemblies are vertically installed on the underside of the tabletop. The support tube and the lifting tube enclose the controllable spring assemblies. As the controllable springs gradually extend and retract, the lifting tube and the tabletop move up and down.

[0003] To improve the synchronization of the vertical movement of different lifting tubes and the levelness with the tabletop, the aforementioned double-column height-adjustable desk uses bolts to fix a crossbar between the lifting tubes. The crossbar increases the rigidity between the tabletop and the lifting tubes, making the lifting tubes less prone to wobbling and keeping them perpendicular to the tabletop. This helps improve the synchronization of the movement of different lifting tubes and the levelness with the tabletop. However, the above measures have the following drawbacks: First, with prolonged use, the end of the crossbar is prone to loosening, which can cause the tabletop to tilt when the double-column height-adjustable desk is raised or lowered. Second, with prolonged use, the gap between the lifting tubes and the support tubes is prone to widening. When the gap between the lifting tubes and the support tubes is large, if the extension and contraction amounts of different controllable spring assemblies are different, it can still cause the tabletop to tilt. Utility Model Content

[0004] To address the drawback of existing double-column lifting desks where the tabletop is prone to tilting, this invention proposes a rope-operated synchronous double-column lifting desk. Two sets of telescopic components are driven by a transmission component, ensuring that the telescopic components extend and retract at the same rate, thereby guaranteeing that the tabletop is level.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A rope-operated synchronous double-column lifting table includes a tabletop, a telescopic assembly, a controllable spring assembly, and a transmission assembly. The telescopic assembly is provided in two sets and includes a guide column and a lifting column. The guide column slides on the lifting column and the upper end of the guide column is fixedly connected to the tabletop. The upper end of the controllable spring assembly is fixedly connected to the lifting column and the lower end is fixedly connected to the guide column.

[0007] The transmission assembly includes a support rod, a first guide section, a second guide section, a third guide section, and a pull rope;

[0008] In one set of telescopic components, the support rod is fixedly connected to the lifting column, the first guide part and the second guide part are set on the support rod, one end of the pull rope is set between the first guide part and the second guide part and fixedly connected to the guide column, and the other end of the pull rope passes through the second guide part and the first guide part and then extends to another set of telescopic components.

[0009] In another telescopic assembly, the third guide is installed on the lifting column, and the other end of the pull rope is fixedly connected to the guide column downward through the third guide, with the pull rope in a taut state.

[0010] With the above setup, the two sets of telescopic components are driven by the transmission component, so that the telescopic components extend and retract at the same rate, ensuring that the tabletop is level.

[0011] Furthermore, the pull rope includes a first rope segment, a second rope segment, and an adjustment component. One end of the first rope segment is fixedly connected to the guide post of one set of telescopic components, one end of the second rope segment is fixedly connected to the guide post of another set of telescopic components, and the other end of the first rope segment is connected to the other end of the second rope segment through the adjustment component, which can adjust the tension of the pull rope.

[0012] The above settings allow for easy adjustment of the tension of the pull rope via the adjustment components, ensuring the pull rope remains taut.

[0013] Furthermore, the adjustment assembly includes a first screw, a second screw, a first locking nut, a second locking nut, and an adjustment sleeve. The first screw and the second screw have opposite thread directions and are threadedly connected to both ends of the adjustment sleeve, respectively. The first locking nut is threadedly connected to the first screw and abuts against the adjustment sleeve. The second locking nut is threadedly connected to the second screw and abuts against the adjustment sleeve. The end of the first rope segment away from the guide post is connected to the first screw, and the end of the second rope segment away from the guide post is connected to the second screw.

[0014] With the above settings, rotating the adjusting sleeve adjusts the length of the component to adjust the tension of the pull rope. The first locking nut and the second locking nut can lock the first screw and the second screw to prevent the pull rope from loosening.

[0015] Furthermore, the first guide section and the third guide section are located close to the table.

[0016] The above settings ensure that the pull cord is close to the underside of the tabletop, preventing it from bumping or colliding.

[0017] Furthermore, the first guide part, the second guide part, and the third guide part are pulleys. The first guide part and the second guide part are rotatably connected to the upper and lower ends of the support rod, and the third guide part is rotatably connected to the corresponding lifting column.

[0018] The above settings reduce the resistance of the rope pulling motion.

[0019] Furthermore, the centers of the first guide section and the second guide section are located on the axis of the support rod.

[0020] With the above settings, the support rod is basically only subjected to axial force, making it less prone to bending and instability.

[0021] Furthermore, the elastic modulus of the pull rope material is greater than 100 GPa.

[0022] With the above settings, the pull rope will basically not extend or retract.

[0023] Furthermore, the support rod is installed in the telescopic assembly.

[0024] The above settings enhance the aesthetics.

[0025] Furthermore, there are two sets of transmission components, which are antisymmetrically arranged between the two sets of telescopic components.

[0026] Furthermore, there are two controllable spring assemblies, which are respectively installed in two sets of telescopic assemblies. The double-column lifting table also includes a toggle plate, a rotating component, and a control line. The upper end of the controllable spring assembly is equipped with a control key, and a rotating component is installed on the upper side of each control key. The rotating component is rotatably connected to the corresponding lifting column. Rotating the rotating component can press down the control key. The toggle plate is rotatably connected to the underside of the table, and the rotating component is controlled to rotate synchronously through the control line.

[0027] Furthermore, the double-column height-adjustable desk also includes a table leg and casters. The table leg is horizontally fixed to the lower end of the guide column, and the casters are installed on the underside of the table leg.

[0028] The above settings facilitate the movement of the double-column height-adjustable table. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a dual-column height-adjustable table as an example.

[0030] Figure 2 This is a cross-sectional view of the double-column lifting table as an example.

[0031] Figure 3 for Figure 2 Enlarged view of point A.

[0032] Figure 4 The diagram below illustrates the lifting principle of the dual-column lifting table as an example.

[0033] Figure 5 This is a schematic diagram illustrating the lifting of the tabletop of the double-column lifting table as an example.

[0034] Figure 6 for Figure 5 Enlarged image of the location.

[0035] Figure 7This is a schematic diagram illustrating the lifting principle of the tabletop of the double-column lifting table as an example.

[0036] Figure 8 This is a schematic diagram of the installation of the transmission assembly in an embodiment.

[0037] Figure 9 This is a cross-sectional view of the adjustment component in an embodiment. Detailed Implementation

[0038] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0039] like Figures 1 to 9 As shown, a rope-operated synchronous double-column lifting table includes a tabletop 3, a telescopic assembly, a controllable spring assembly 4, and a transmission assembly. The telescopic assembly is provided in two sets, including a guide column 5 and a lifting column 6. The guide column 5 is slidably mounted on the lifting column 6, and the upper end of the guide column 5 is fixedly connected to the tabletop 3. The upper end of the controllable spring assembly 4 is fixedly connected to the lifting column 6, and the lower end is fixedly connected to the guide column 5.

[0040] The transmission assembly includes a support rod 7, a first guide part 8, a second guide part 9, a third guide part 10, and a pull rope 11;

[0041] In one set of telescopic components, the support rod 7 is fixedly connected to the lifting column 6. The first guide part 8 and the second guide part 9 are arranged vertically on the support rod 7. One end of the pull rope 11 is arranged between the first guide part 8 and the second guide part 9 and is fixedly connected to the guide column 5. The other end of the pull rope 11 passes through the second guide part 9 and the first guide part 8 and then extends to another set of telescopic components. In the other set of telescopic components, the third guide part 10 is arranged on the lifting column 6. The other end of the pull rope 11 passes through the third guide part 10 and is fixedly connected downward to the guide column 5. The pull rope 11 is in a taut state.

[0042] With the above settings, the two sets of telescopic components are driven by the transmission component to make the telescopic components extend and retract at the same amount, ensuring that the tabletop 3 is level.

[0043] The tabletop 3 of this application is horizontal. Two sets of telescopic components are symmetrically arranged on the underside of the tabletop 3. The upper end of the lifting column 6 is vertically fixed to the underside of the tabletop 3. Both the guide column 5 and the lifting column 6 are tubular structures with a square cross-section. The controllable spring assembly 4 can specifically be a gas spring or other damper. The upper end of the controllable spring assembly 4 is fixedly connected to the upper end of the lifting column 6, and the lower end of the controllable spring assembly 4 is fixedly connected to the lower end of the guide column 5. The controllable spring assembly 4 is vertically installed and can extend and retract vertically. The lifting column 6 moves up and down with the extension and retraction of the controllable spring assembly 4. The lifting column 6 is fitted onto the guide column 5 and slidably connected to it. The inner wall of the lifting column 6 is flush with the outer wall of the guide column 5. The lifting column 6 moves up and down stably; the number of controllable spring assemblies 4 is not limited, and there can be one or more. Specifically, the double-column lifting table of this application has two controllable spring assemblies 4, which are installed in two sets of telescopic assemblies respectively; the first guide part 8, the second guide part 9, and the third guide part 10 are used to change the direction of the pull rope 11, and can take various forms. For example, the first guide part 8 and the second guide part 9 can be part of the support rod 7, or the first guide part 8 and the second guide part 9 can be the rounded chamfers at the upper and lower ends of the support rod 7; the third guide part 10 can be a fixed column locked onto the lifting column 6; the pull rope 11 is made of a material that is not easily stretched, and the pull rope 11 is in a taut state, such as... Figure 2 and Figure 4 The left end of the pull rope 11 is fixedly connected to the guide post 5 of the telescopic component on the left side. The left end of the pull rope 11 first extends downward to the lower end of the support rod 7, passes through the second guide part 9 at the lower end of the support rod 7, then extends upward to the first guide part 8 at the upper end of the support rod 7, then extends horizontally to the right to the third guide part 10, and finally extends downward to be fixedly connected to another guide post 5.

[0044] The pull rope 11 and support rod 7 of this application are non-stretchable and have a constant length. Both ends of the pull rope 11 are locked to the corresponding guide posts 5, and the height remains constant. When the controllable spring assembly 4 extends upward by L, it drives the table 3 and the lifting column 6 to move upward synchronously by L. Specifically, as shown... Figure 7 When the right-side lifting column 6 moves upward by L, it drives the third guide part 10 to move upward by L simultaneously. The length of the pull rope 11 below the third guide part 10 increases by L, and the pull rope 11 is pulled to the right. Since the length of the pull rope 11 and the support rod 7 remains unchanged, the length between the left end of the pull rope 11 and the second guide part 9 is shortened by L. The support rod 7 and the left-side lifting column 6 also move upward by L. The same applies when the controllable spring assembly 4 retracts downward. In summary, when the controllable spring assembly 4 extends and retracts, the extension and retraction of the left and right sets of extension and retraction assemblies remain consistent under the transmission action of the pull rope 11, so that the table 3 is always horizontal.

[0045] As one implementation, the pull rope 11 includes a first rope segment 111, a second rope segment 112, and an adjustment component 113. One end of the first rope segment 111 is fixedly connected to the guide post 5 of one set of telescopic components, and one end of the second rope segment 112 is fixedly connected to the guide post 5 of another set of telescopic components. The other end of the first rope segment 111 is connected to the other end of the second rope segment 112 through the adjustment component 113. The adjustment component 113 can adjust the tension of the pull rope 11.

[0046] With the above settings, the tension of the pull rope 11 can be easily adjusted by adjusting component 113, so that the pull rope 11 is in a taut state.

[0047] The first rope segment 111 and the second rope segment 112 of this application are made of the same material. The adjustment component 113 is located under the tabletop 3. When the tabletop 3 is raised or lowered, the adjustment component 113 moves left and right under the tabletop 3. Specifically, one end of the first rope segment 111 is locked to the guide post 5 on the left side. After passing through the first guide part 8 and the second guide part 9, the first rope segment 111 is connected to the left end of the adjustment component 113. One end of the second rope segment 112 is connected to the right end of the adjustment component 113. The other end of the second rope segment 112 is fixedly connected to the guide post 5 on the right side through the third guide part 10. When the tabletop 3 moves upward, as... Figure 7 The lifting columns 6 on both sides move upward, and the adjusting component 113 moves to the right.

[0048] In one implementation, the adjustment assembly 113 includes a first screw 1131, a second screw 1132, a first locking nut 1133, a second locking nut 1134, and an adjustment sleeve 1135. The first screw 1131 and the second screw 1132 have opposite thread directions and are threadedly connected to both ends of the adjustment sleeve 1135, respectively. The first locking nut 1133 is threadedly connected to the first screw 1131 and abuts against the adjustment sleeve 1135. The second locking nut 1134 is threadedly connected to the second screw 1132 and abuts against the adjustment sleeve 1135. The end of the first rope segment 111 away from the guide post 5 is connected to the first screw 1131, and the end of the second rope segment 112 away from the guide post 5 is connected to the second screw 1132.

[0049] With the above settings, rotating the adjusting sleeve 1135 causes the length of the adjusting component 113 to extend or retract, thereby adjusting the tension of the pull rope 11. The first locking nut 1133 and the second locking nut 1134 can lock the first screw 1131 and the second screw 1132 to prevent the pull rope 11 from loosening.

[0050] When adjusting the tension of the pull rope 11 using the adjusting component 113, keep the first screw 1131 and the second screw 1132 stationary and rotate the adjusting sleeve 1135. Since the threads of the first screw 1131 and the second screw 1132 are opposite, their movement directions are also opposite, causing them to move away from or towards each other. When the first screw 1131 and the second screw 1132 move away from each other, the pull rope 11 becomes loose; when the first screw 1131 and the second screw 1132 move towards each other, the pull rope 11 becomes tight. After adjustment, tighten the first locking nut 1133 and the second locking nut 1134. The first locking nut 1133 and the second locking nut 1134 are pressed against both ends of the adjusting sleeve 1135, preventing the first screw 1131 and the second screw 1132 from loosening.

[0051] As one implementation method, the first guide section 8 and the third guide section 10 are close to the table plate 3.

[0052] The above settings ensure that the pull rope 11 is close to the underside of the tabletop 3, preventing the pull rope 11 from being bumped or knocked.

[0053] like Figure 8 The first guide section 8 and the third guide section 10 are close to the tabletop 3, so that the pull rope 11 is horizontal between the first guide section 8 and the third guide section 10 and close to the tabletop 3. When in use, the user's thigh will not touch the pull rope 11.

[0054] In one implementation, the first guide part 8, the second guide part 9 and the third guide part 10 are pulleys. The first guide part 8 and the second guide part 9 are rotatably connected to the upper and lower ends of the support rod 7, and the third guide part 10 is rotatably connected to the corresponding lifting column 6.

[0055] The above settings reduce the resistance to the movement of the rope 11.

[0056] Specifically, the first guide part 8 is rotatably connected to the upper end of the support rod 7, the second guide part 9 is rotatably connected to the lower end of the support rod 7, and the third guide part 10 is rotatably connected to the upper end of the lifting column 6. The first guide part 8 and the third guide part 10 are at the same height. When the pull rope 11 moves, the first guide part 8, the second guide part 9 and the third guide part 10 rotate to reduce the resistance of the pull rope 11.

[0057] In one implementation, the centers of the first guide section 8 and the second guide section 9 are located on the axis of the support rod 7.

[0058] With the above settings, the support rod 7 is basically only subjected to axial force, and the support rod 7 is not easy to bend and become unstable.

[0059] The support rod 7 of this application extends vertically, such as... Figure 3The pull ropes 11 on both sides of the support rod 7 are vertical and parallel to the support rod 7. Specifically, the distance between the axis of the support rod 7 and the left pull rope 11 is d1, and the distance between the axis of the support rod 7 and the right pull rope 11 is d2, where d1 = d2. When the table 3 is raised or lowered, the support rod 7 is basically only subjected to axial force.

[0060] As one implementation method, the elastic modulus of the material of the pull rope 11 is greater than 100 GPa.

[0061] With the above settings, the pull rope 11 will basically not extend or retract.

[0062] The material of the pull rope 11 in this application is similar to that of a bicycle brake cable, and it can be made of steel wire rope or other materials.

[0063] As one implementation method, the support rod 7 is set in the telescopic assembly.

[0064] The above settings enhance the aesthetics.

[0065] As one implementation method, two sets of transmission components are provided, and the two sets of transmission components are anti-symmetrically arranged between the two sets of telescopic components.

[0066] As one implementation method, there are two controllable spring assemblies 4, which are respectively installed in two sets of telescopic assemblies. The double column lifting table also includes a toggle plate 12, a rotating part 13 and a control line 14. The upper end of the controllable spring assembly 4 is provided with a control key 15, and a rotating part 13 is provided on the upper side of each control key 15. The rotating part 13 is rotatably connected to the corresponding lifting column 6. Rotating the rotating part 13 can press down the control key 15. The toggle plate 12 is rotatably connected to the lower side of the table 3, and the rotating part 13 is controlled to rotate synchronously through the control line 14.

[0067] The controllable spring assembly 4 of this application specifically adopts a gas spring, which can be directly purchased from the market. A control button 15 is provided at the upper end; pressing the control button 15 allows the gas spring to extend or retract. The toggle plate 12 of this application is rotatably connected to the underside of the tabletop 3. The toggle plate 12 is connected to two control lines 14, which are respectively connected to the rotating parts 13 on the left and right sides. Manually rotating the toggle plate 12 synchronously rotates the rotating parts 13 on the left and right sides via the two control lines 14. Figure 6 When the rotating part 13 presses down the control key 15, the gas spring extends or shortens to adjust the height of the tabletop 3.

[0068] As one implementation method, the double-column height-adjustable desk also includes a table leg plate 16 and casters 17. The table leg plate 16 is horizontally fixed to the lower end of the guide column 5, and the casters 17 are installed on the underside of the table leg plate 16.

[0069] The above settings facilitate the movement of the double-column height-adjustable table.

[0070] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A pull cord synchronized dual column lift table characterized by, The device includes a tabletop, a telescopic assembly, a controllable spring assembly, and a transmission assembly. The telescopic assembly is provided in two sets, and includes a guide column and a lifting column. The guide column is slidably mounted on the lifting column, and the upper end of the guide column is fixedly connected to the tabletop. The upper end of the controllable spring assembly is fixedly connected to the lifting column, and the lower end is fixedly connected to the guide column. The transmission assembly includes a support rod, a first guide part, a second guide part, a third guide part, and a pull rope; In one set of telescopic components, the support rod is fixedly connected to the lifting column, the first guide part and the second guide part are arranged vertically on the support rod, one end of the pull rope is arranged between the first guide part and the second guide part and is fixedly connected to the guide column, and the other end of the pull rope passes through the second guide part and the first guide part and extends to another set of telescopic components. In another telescopic assembly, the third guide is mounted on the lifting column, and the other end of the pull rope is fixedly connected downward to the guide column via the third guide, with the pull rope in a taut state.

2. The cable synchronous double column lifting table according to claim 1, characterized in that, The pull rope includes a first rope segment, a second rope segment, and an adjustment component. One end of the first rope segment is fixedly connected to the guide post of one set of telescopic components, and one end of the second rope segment is fixedly connected to the guide post of another set of telescopic components. The other end of the first rope segment is connected to the other end of the second rope segment through the adjustment component, which can adjust the tension of the pull rope.

3. The cable synchronous double column lifting table according to claim 2, characterized in that, The adjusting assembly includes a first screw, a second screw, a first locking nut, a second locking nut, and an adjusting sleeve. The first screw and the second screw have opposite thread directions and are threaded to both ends of the adjusting sleeve, respectively. The first locking nut is threaded to the first screw and abuts against the adjusting sleeve. The second locking nut is threaded to the second screw and abuts against the adjusting sleeve. The end of the first rope segment away from the guide post is connected to the first screw, and the end of the second rope segment away from the guide post is connected to the second screw.

4. The cable synchronous double column lifting table according to claim 1, characterized in that, The first guide section and the third guide section are close to the table.

5. The cable synchronous double column lifting table according to claim 1, characterized in that, The first guide part, the second guide part, and the third guide part are pulleys. The first guide part and the second guide part are rotatably connected to the upper and lower ends of the support rod, and the third guide part is rotatably connected to the corresponding lifting column.

6. The cable synchronous double column lifting table according to claim 1, characterized in that, The centers of the first guide portion and the second guide portion are located on the axis of the support rod.

7. The cable synchronous double column lifting table according to claim 1, characterized in that, The elastic modulus of the material of the pull rope is greater than 100 GPa.

8. The cable synchronous double column lift table according to claim 1, wherein, The support rod is installed in the telescopic assembly.

9. A rope-operated synchronous double-column lifting table according to claim 1, characterized in that, The transmission assembly is provided in two sets, which are antisymmetrically arranged between the two sets of telescopic assemblies.

10. The cable synchronous double column lift table according to claim 1, wherein, Two controllable spring assemblies are provided, each set in one of the two telescopic assemblies. The double-column lifting table also includes a toggle plate, a rotating component, and a control line. A control key is provided on the upper end of the controllable spring assembly. A rotating component is provided on the upper side of each control key. The rotating component is rotatably connected to the corresponding lifting column. Rotating the rotating component can press down the control key. The toggle plate is rotatably connected to the underside of the table and controls the rotating component to rotate synchronously through the control line.

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