Lift table leg

Abstract

The utility model discloses a lift table leg, including telescopic sleeve, be equipped with cable in telescopic sleeve, be equipped with the electric push rod of drive telescopic sleeve telescopic in cable side, telescopic sleeve has the end plate of being located in its end, and the electric push rod has fixed end, and fixed end is connected with end plate, be equipped with the mounting plate of separating setting with electric push rod on end plate, be equipped with the mounting groove on mounting plate, be equipped with the line card on cable, and the line card is carded and is equipped in mounting groove, in the scheme, directly connect the mounting plate of being as fixed line structure with the end plate of telescopic sleeve, and separate setting with electric push rod, and electric push rod directly uses the ready -made general structure, need not to carry out the reform, not only has simplified the production tedious degree of electric push rod, reduced cost, and maintained simple structure, and production and assembly are convenient.

Description

Technical Field

[0001] This utility model relates to the field of furniture, and in particular to a height-adjustable table leg. Background Technology

[0002] In the field of height-adjustable desk technology, traditional height-adjustable desks generally have exposed cables on their legs. The messy external cables not only ruin the overall visual cleanliness of the desktop, but are also prone to damage due to accidental pulling or stepping, posing a safety hazard.

[0003] To address this pain point, the industry has gradually introduced solutions for built-in cables in table legs, which use spiral telescopic cables that extend and retract synchronously with the lifting and lowering of the table legs. To ensure the stability of the spiral telescopic cables inside the table legs and prevent them from shaking, tangling, or shifting excessively during extension and retraction, a cable fixing structure is also required to secure the cable ends.

[0004] However, to simplify the assembly process, most manufacturers integrate the spiral telescopic cable with the electric linear actuator. Specifically, this is done by modifying the electric linear actuator body, adding a cable fixing structure to the actuator shell or internal structure, connecting and fixing the cable end to this fixing structure, and finally installing the cable and electric linear actuator together into the table leg. This design seems to reduce the steps in assembling the table leg, but in reality, the modified electric linear actuator cannot be compatible with the assembly requirements of universal height-adjustable table legs and can only be used as a special component, losing the versatility advantage of the universal electric linear actuator. On the other hand, modifying the structure of the electric linear actuator also increases the cost and complexity of producing the electric linear actuator. Summary of the Invention

[0005] To solve the above-mentioned technical problems, this utility model provides a height-adjustable table leg, including a telescopic sleeve, a cable inside the telescopic sleeve, and an electric push rod for driving the telescopic sleeve to extend and retract beside the cable; the mounting plate, which serves as the cable fixing structure, is directly connected to the end plate of the telescopic sleeve, and is set separately from the electric push rod. The electric push rod can directly use an existing general structure without modification, which not only simplifies the production complexity of the electric push rod and reduces costs, but also maintains a simple structure and is convenient for production and assembly.

[0006] The technical solution of this utility model is implemented as follows: A height-adjustable table leg includes a telescopic sleeve with a cable inside. An electric push rod for driving the telescopic sleeve to extend and retract is located beside the cable. The telescopic sleeve has an end plate at its end, and the electric push rod has a fixed end connected to the end plate. A mounting plate, separate from the electric push rod, is provided on the end plate. The mounting plate has a mounting groove, and a wire clip is provided on the cable, which is engaged in the mounting groove.

[0007] In this solution, the mounting plate, which serves as the fixed wire structure, is directly connected to the end plate of the telescopic sleeve, while being set separately from the electric actuator. The electric actuator can directly use an existing general structure without modification, which not only simplifies the production complexity of the electric actuator and reduces costs, but also maintains a simple structure, making production and assembly convenient.

[0008] Preferably, the mounting plate includes a fixed plate, an extension plate, and an action plate. The extension plate connects to the fixed plate and the action plate, and a mounting groove is formed on the action plate. A receiving groove is formed on the end plate, through which the extension plate and the action part enter the telescopic sleeve. The fixed plate connects to the end plate outside the receiving groove. The mounting plate is formed by bending a single piece of sheet metal to form the fixed plate, extension plate, and action plate. This method is simple to produce and low in cost. After cutting the sheet metal and forming the mounting groove, the plate can be bent directly. The mounting plate is inserted into the telescopic sleeve through the receiving groove on the end plate of the telescopic sleeve. Modification of the telescopic sleeve is also very simple, thus greatly saving costs and improving production efficiency.

[0009] Preferably, the width of the receiving groove is the same as the width of the extension plate and the functional part, and the width of the fixing plate is greater than the width of the receiving groove. The fixing plate is left outside the receiving groove and is connected to the end on the outside for easy assembly.

[0010] Preferably, along the width direction, the fixing plate includes a side wing located at the end, the side wing extending outward from the fixing plate along the width direction, and the side wing is bolted to the end plate. The side wing arrangement makes the connection between the fixing plate and the end plate more stable.

[0011] Preferably, the mounting plate is roughly U-shaped, with the fixing plate and the function plate horizontally positioned and the extension plate vertically positioned. The extension plate allows the function plate to extend inward to a certain height. Since the power socket is located near this end, sufficient height space is required to allow for a smooth connection of the cable to the power socket.

[0012] Preferably, the mounting slot has an opening, a limiting section, and a locking section distributed sequentially from the outside in. The diameter of the opening is larger than the width of the limiting section and gradually decreases as it approaches the limiting section. The diameter of the locking section is larger than the width of the limiting section. The opening facilitates the entry of the cable clip into the mounting slot. After the cable clip enters the locking section, the installation is completed. The narrower limiting section locks and limits its movement, preventing the cable clip from falling out of the mounting slot and preventing the cable from detaching from the mounting plate.

[0013] Preferably, a power socket is provided on the side wall of the telescopic sleeve near the end plate. One end of the cable is connected to the power socket. The side wall has mounting holes through which the power socket is installed on the telescopic sleeve. With the power socket located on the side wall and the cable connected to the power socket inside the telescopic sleeve, the cable is completely inside the table leg and is not visible from the outside. This achieves true internal wiring, which is aesthetically pleasing and avoids safety hazards.

[0014] Preferably, the cable clamp includes a first blocking part, a second blocking part, and a snap-fit ​​part, with the snap-fit ​​part located between the first blocking part and the second blocking part and having the smallest diameter. After the snap-fit ​​part snaps into the second mounting slot, the first blocking part and the second blocking part provide stability in the cable length direction (vertical direction).

[0015] Preferably, the first or second blocking part extends along the length of the cable and has a reinforcing part, which is configured to reinforce the connection between the cable clip and the cable.

[0016] Preferably, the cable is a spiral telescopic cable, which expands and contracts with the expansion and contraction of the telescopic sleeve.

[0017] The design starting point, concept, and beneficial effects of this utility model, which adopts the above technical solution, are as follows: In this solution, the mounting plate, which serves as the fixed wire structure, is directly connected to the end plate of the telescopic sleeve, while being set separately from the electric actuator. The electric actuator can directly use an existing general structure without modification, which not only simplifies the production complexity of the electric actuator and reduces costs, but also maintains a simple structure, making production and assembly convenient.

[0018] The mounting plate is formed by bending a single piece of sheet metal to create a fixing plate, an extension plate, and an action plate. It is simple to produce and has low cost. After the sheet metal is cut and the mounting groove is made, it can be bent directly. The mounting plate is inserted into the telescopic sleeve through the receiving groove of the telescopic sleeve end plate. Modification of the telescopic sleeve is also very simple, thus greatly saving costs and improving production efficiency. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the lifting table leg in an embodiment of the present invention; Figure 2 This is a three-dimensional structural diagram of the motor box in an embodiment of the present invention; Figure 3 This is a three-dimensional structural diagram of the present invention in an embodiment, showing the window and clearance opening disposed on the bottom plate of the motor box; Figure 4 This is a three-dimensional structural diagram of the present invention in which most of the connecting wires are located inside the junction box in an embodiment; Figure 5 This is a perspective sectional view of the lifting table leg in an embodiment of the present invention; Figure 6 This is a three-dimensional structural diagram of the second mounting plate fixing the cable in an embodiment of the present invention; Figure 7 This is a three-dimensional structural diagram of the second mounting plate in an embodiment of the present invention; Figure 8This is a three-dimensional structural diagram of the second mounting plate and the end plate in an embodiment of the present invention.

[0020] The attached figures are labeled as follows: telescopic sleeve 1; inner tube 2; outer tube 3; box 4; motor box 5; junction box 6; window 7; clearance opening 8; cable 9; connecting wire 11; stripped section 12; rubber jacket 13; protective switch 14; button 15; external socket 16; socket 17; first mounting plate 21; first mounting groove 22; first wire clip 23; power socket 24; second mounting plate 25; second mounting groove 26; opening 261; limiting section 262; locking section 263; second wire clip 27; first blocking part 271; second blocking part 272; snap-fit ​​part 273; reinforcing part 274; fixing plate 28; side wing 281; extension plate 29; action plate 30; receiving groove 31; motor 33; electric push rod 34; end plate 35. Detailed Implementation

[0021] 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.

[0022] 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.

[0023] 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.

[0024] The specific implementation of this utility model is as follows: like Figure 1-5 As shown, this utility model provides a height-adjustable table leg, including a telescopic sleeve 1. The end of the telescopic sleeve 1 is provided with a box 4. The box 4 is provided with a window 7 that connects the box 4 to the inside of the telescopic sleeve 1. A cable 9 is provided inside the telescopic sleeve 1. Several connecting wires 11 are stripped from one end of the cable 9. The connecting wires 11 enter the box 4 through the window 7. The box 4 is provided with at least a protection switch 14 that provides power failure protection and an external socket 16 that supplies power to external devices of the height-adjustable table leg. The connecting wires 11 at one end of the cable 9 are electrically connected to the protection switch 14 and the external socket 16.

[0025] The protective switch 14, which was originally located on the end face of the telescopic sleeve 1, has been moved to the box 4. This allows the protective switch 14 and the external socket 16 to be installed together on the box 4, which is not only convenient to use, but also eliminates the need to strip the cable 9 at multiple points. In this solution, only one end of the cable 9 needs to be stripped, exposing the connecting wire 11 used for electrical connection. The connecting wire 11 can connect the protective switch 14 and the external socket 16 at the same time, which saves processing time and cost, and improves the insulation and safety of the cable 9.

[0026] Specifically, the telescopic sleeve 1 includes an inner tube 2 and an outer tube 3 sleeved outside the inner tube 2. Both the inner tube 2 and the outer tube 3 can be connected to the box body 4. In this embodiment, the outer tube 3 is located at the top and connected to the box body 4. The lower end of the inner tube 2 is used to connect to the support leg. In existing lifting table legs, the safety switch 14 is generally located at the lower end of the inner tube 2. This not only increases the length of the lower end of the inner tube 2 exposed above the outer tube 3 (i.e., the overlap between the inner tube 2 and the outer tube 3 becomes lower), but also requires the cable 9 to be stripped and disconnected at this point to be electrically connected to the safety switch 14, which affects the insulation and safety of the cable 9 and also affects its service life. Therefore, in order to solve these problems, this solution sets the safety switch 14 on the box body 4.

[0027] like Figure 2-5 As shown, the box 4 includes a motor box 5 for mounting the motor 33 and a junction box 6 located below the motor box 5. The motor box 5 protrudes to the side from the telescopic sleeve 1, and the junction box 6 is installed on the lower end face of the protruding part of the motor box 5. The protective switch 14 and the external socket 16 are both installed on the junction box 6. The window 7 is opened on the bottom of the motor box 5. The motor box 5 has a clearance opening 8 on the side of the window 7 and above the junction box 6. The connecting wire 11 enters the motor box 5 through the window 7 and then enters the junction box 6 through the clearance opening 8. The connecting wire 11 can be mostly located in the junction box 6. The connecting wire 11 is divided into a neutral wire, a ground wire, and a live wire. The live wire is connected to the protective switch 14 and then connected to the external socket 16 through the protective switch 14. When the protective switch 14 is turned off, the live wire is disconnected, which can disconnect the power to the external socket 16 and the lifting table legs as a whole.

[0028] Cable 9 is a spiral telescopic cable. Cable 9 is also elastic and can extend and retract with the extension and retraction of the lifting table legs. Therefore, there is a risk of breakage or cracking when stretched. To reinforce it, a rubber jacket 13 is installed outside the connecting cable 11. After the rubber jacket 13 covers the connecting cable 11, it protects the internal connecting cable 11 well. However, it is difficult to protect the exposed connecting cable 11 well. Therefore, on the one hand, as mentioned above, the protective switch 14 is transferred from the telescopic sleeve 1 to the box 4 to maintain the integrity of the rubber jacket 13. On the other hand, it is also necessary to ensure that when the cable 9 is stretched, only the rubber jacket 13 is subjected to force to prevent the exposed connecting cable 11 from being stressed.

[0029] The external socket 16 has a socket 17, and the protective switch 14 has a button 15. Both the socket 17 and the button 15 are exposed outside the housing 4. The external socket 16 and the protective switch 14 inside the junction box 6 are connected to the connecting wire 11. The end of the cable 9 that is stripped from the connecting wire 11 is a stripped section 12. There is no rubber sleeve 13 to protect the stripped section 12. The connecting wire 11 of the stripped section 12 is exposed outside the rubber sleeve 13. A first mounting plate 21 is provided at the window 7 of the motor box 5. The first mounting plate 21 is detachably connected to the bottom plate of the motor box 5. The first mounting plate 21 is provided with a first mounting groove 22. A first wire clip 23 is provided at the end of the rubber sleeve 13 near the stripped section 12. The first wire clip 23 is locked in the first mounting groove 22 and keeps the connecting wire 11 inside the housing 4 to protect the connecting wire 11 from force.

[0030] like Figure 5-8 As shown, the other end of the cable 9 is equipped with a power socket 24, which is located on the side wall of the telescopic sleeve 1, specifically at the lower end of the side wall of the inner tube 2. The side wall has mounting holes, through which the power socket 24 is mounted on the telescopic sleeve 1, with only the working surface of the power socket 24 exposed outside the side wall. The cable 9 located near this point also needs to be stripped to expose the connecting wire 11, so as to connect with the power socket 24. The power socket 24 is located on the side wall, and the cable 9 and the power socket 24 are connected inside the telescopic sleeve 1, so that the cable 9 is completely inside the table leg and cannot be seen from the outside. This achieves true internal wiring, which is aesthetically pleasing and avoids safety hazards.

[0031] At the lower end of the cable 9, a cable fixing structure is also required: a second mounting plate 25 is provided at the lower end of the inner tube 2, a second mounting groove 26 is provided on the second mounting plate 25, and a second wire clip 27 is provided on the rubber jacket 13 at the corresponding position. The second wire clip 27 is snapped into the second mounting groove 26; the rubber jacket 13 and the wire clip are both injection molded together.

[0032] Furthermore, an electric push rod 34 for driving the telescopic sleeve 1 to extend and retract is provided next to the cable 9. The inner tube 2 has an end plate 35 located at its lower end. The lower end of the electric push rod 34 is a fixed end, which is connected to the end plate 35. The second mounting plate 25 is separately mounted on the end plate 35 relative to the electric push rod 34. In this solution, the second mounting plate 25, which serves as a wire fixing structure, is directly connected to the end plate 35 of the telescopic sleeve 1, while being separately mounted from the electric push rod 34. The electric push rod 34 can directly use an existing general structure without modification. This not only simplifies the production complexity of the electric push rod 34 and reduces costs, but also maintains a simple structure, making production and assembly convenient.

[0033] The second mounting plate 25 is roughly U-shaped and includes a horizontal fixed plate 28 at the bottom, an extension plate 29 vertically positioned at the end of the fixed plate 28, and an action plate 30 positioned at the upper end of the extension plate 29. A second mounting groove 26 is formed on the action plate 30. A receiving groove 31 is formed on the end plate 35 of the inner tube 2. The extension plate 29 and the action plate 30 enter the inner tube 2 through the receiving groove 31. The fixed plate 28 is fixedly connected to the end plate 35. The second mounting plate 25 is formed by bending a single piece of sheet metal to form the fixed plate 28, the extension plate 29, and the action plate 30. The production is simple and the cost is low. After the sheet metal is cut and the second mounting groove 26 is formed, it can be bent directly. The second mounting plate 25 is inserted into the telescopic sleeve 1 through the receiving groove 31 of the end plate 35 of the telescopic sleeve 1. The modification of the telescopic sleeve 1 is also very simple, thus greatly saving costs and improving production efficiency. The extension plate 29 allows the action plate 30 to extend to a certain height. Since the power socket 24 is located near this end, sufficient height space is required to allow the cable 9 to be smoothly connected to the power socket 24.

[0034] The width of the receiving groove 31 is the same as the width of the extension plate 29 and the action plate 30, and the width of the fixing plate 28 is greater than the width of the receiving groove 31. The fixing plate 28 is located outside the receiving groove 31 and is connected to the end plate 35 on the outside, which facilitates assembly. Along the width direction, the fixing plate 28 includes a side wing 281 located at the end. The side wing 281 extends outward from the fixing plate 28 along the width direction and is connected to the end plate 35 by bolts. The side wing 281 makes the connection between the fixing plate 28 and the end plate 35 more stable.

[0035] The second mounting slot 26 has an opening 261, a limiting section 262, and a locking section 263 distributed sequentially from the outside to the inside. The diameter of the opening 261 is larger than the width of the limiting section 262 and gradually decreases as it approaches the limiting section 262. The diameter of the locking section 263 is larger than the width of the limiting section 262. The opening 261 facilitates the entry of the second cable clip 27 into the second mounting slot 26. After the second cable clip 27 enters the locking section 263, the installation is completed. The narrower limiting section 262 locks and limits its movement, preventing the second cable clip 27 from falling out of the second mounting slot 26 and avoiding the cable 9 from detaching from the second mounting plate 25. The second cable clip 27 includes a first blocking part 271, a second blocking part 272, and a snap-fit ​​part 273. The snap-fit ​​part 273 is located between the first blocking part 271 and the second blocking part 272 and has the smallest diameter. After the snap-fit ​​part 273 snaps into the second mounting groove 26, the first blocking part 271 and the second blocking part 272 provide stability in the length direction (vertical direction) of the cable 9. The first blocking part 271 or the second blocking part 272 extends along the length direction of the cable 9 with a reinforcing part 274, which is configured to reinforce the connection between the cable clip and the cable 9.

Claims

1. A height-adjustable table leg, characterized in that: The device includes a telescopic sleeve containing a cable, and an electric push rod for driving the telescopic sleeve to extend and retract beside the cable. The telescopic sleeve has an end plate at its end, and the electric push rod has a fixed end connected to the end plate. A mounting plate, separate from the electric push rod, is provided on the end plate. The mounting plate has a mounting groove, and a wire clip is provided on the cable, which is secured in the mounting groove.

2. The height-adjustable table leg according to claim 1, characterized in that: The mounting plate includes a fixed plate, an extension plate, and an action plate. The extension plate is connected to the fixed plate and the action plate. The mounting groove is opened on the action plate. The end plate has a receiving groove. The extension plate and the action part enter the telescopic sleeve through the receiving groove. The fixed plate is connected to the end plate outside the receiving groove.

3. The height-adjustable table leg according to claim 2, characterized in that: The width of the receiving groove is the same as the width of the extension plate and the working part, and the width of the fixing plate is greater than the width of the receiving groove.

4. The height-adjustable table leg according to claim 3, characterized in that: Along the width direction, the fixing plate includes a side wing located at the end, the side wing extending outward from the fixing plate along the width direction, and the side wing is connected to the end plate by bolts.

5. The height-adjustable table leg according to claim 2, characterized in that: The mounting plate is roughly U-shaped, with the fixing plate and the function plate set horizontally, and the extension plate set vertically.

6. The height-adjustable table leg according to claim 1, characterized in that: The mounting groove has an opening, a limiting section, and a locking section distributed sequentially from the outside to the inside. The diameter of the opening is larger than the width of the limiting section and gradually decreases as it approaches the limiting section. The diameter of the locking section is larger than the width of the limiting section.

7. The height-adjustable table leg according to claim 1, characterized in that: A power socket is provided on the side wall of the telescopic sleeve near the end plate. One end of the cable is connected to the power socket. The side wall is provided with mounting holes, and the power socket is installed on the telescopic sleeve through the mounting holes.

8. The height-adjustable table leg according to claim 1, characterized in that: The cable clamp includes a first blocking part, a second blocking part, and a snap-fit ​​part. The snap-fit ​​part is located between the first blocking part and the second blocking part and has the smallest diameter.

9. The height-adjustable table leg according to claim 8, characterized in that: The first or second blocking part extends along the length of the cable and has a reinforcing part, which is configured to reinforce the connection between the cable clip and the cable.

10. The height-adjustable table leg according to claim 1, characterized in that: The cable is a spiral telescopic cable, which expands and contracts with the expansion and contraction of the telescopic sleeve.

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