Wiring internal and external double-guiding device
By using a dual-guided device for wiring inside and outside in the lifting table, the cooperation of telescopic cables and internal and external guides is solved, and the problems of inconvenient cable management, easy damage and noise are achieved, and the protection, management and noise reduction of cables are achieved.
Patent Information
- Application Number
- CN202323664152.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2023-12-06
- Filing Date
- 2023-12-29
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2033-12-29
AI Technical Summary
The cable management of existing lifting tables is inconvenient, easy to damage when exposed, and the wiring is prone to noise when stretching, affecting the safety and life of use.
It adopts dual-guided devices for wiring inside and outside, including telescopic sleeves, electric push rods, telescopic cables, internal guides and external guides. The telescopic cable is partly sleeved or wound outside the inner guide, and partly located in the outer guide. Through the cooperation between the inner guide and the outer guide, the comprehensive guidance and management of the telescopic cable is achieved.
Effectively protect cables, extend service life, improve the cleanliness and safety of cable management, reduce noise and reduce material costs.
Smart Images
Figure CN222484465U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of furniture, in particular to a wiring device with internal and external double guides. Background Art
[0002] In order to adapt to the development of science and technology and the needs of humanized design concepts, electrical appliances have become an indispensable part of people's work, life and even entertainment. As more and more electrical appliances are used, more and more wires are used. If the cables are not properly managed, they will not only look messy, but also affect the use of electrical equipment, and may even cause safety hazards, burn the lines and cause fires.
[0003] Lift tables are very common in daily life. With the upgrading of technology and the enhancement of humanized design awareness, some existing lift tables not only have the function of electrically adjusting the height of the tabletop, but also can be equipped with sockets on the table columns to facilitate users to use some electrical equipment. However, exposing the cables directly to the outside of the table body not only makes it messy and difficult to organize, causing inconvenience in electricity use, but also the exposed wires are easily damaged, affecting the service life of the cables and even causing safety hazards. Therefore, placing the cables inside the table body has become a hot spot in the current structural design of lift tables.
[0004] In the columns of some lifting tables, the wiring is spirally arranged inside the columns. The wiring is lengthened or retracted as the columns are extended or retracted. In order to provide a guiding function for the wiring that follows the extension and retraction of the columns, additional telescopic pipes are provided inside the columns and sleeved onto the outside of the wiring to achieve comprehensive guiding of the extension and retraction of the wiring. However, the cost of doing so is higher and the benefit is too low. Even if comprehensive guiding of the extension and retraction of the wiring is achieved, there is still a problem of the wiring hitting the inner wall of the telescopic pipe and generating noise when it is extended or retracted. Summary of the invention
[0005] In order to solve the above-mentioned technical problems, the utility model provides a device with internal and external dual guides for wiring, including a telescopic sleeve and an electric push rod vertically arranged in the telescopic sleeve, a telescopic cable, an inner guide and an outer guide, the inner guide and the outer guide are located on the side of the electric push rod, the telescopic cable is coaxial with the inner guide and the telescopic cable is partially sleeved or wrapped around the inner guide, and the telescopic cable is partially located in the outer guide, and the cable in the telescopic cable is used for electrical connection of the device; when the telescopic sleeve is extended or retracted, the telescopic cable is correspondingly extended or retracted, and the extension and retraction of the telescopic cable is guided by the inner guide and the outer guide; on the one hand, the telescopic cable can be used to protect the internal cables, and on the other hand, it is conducive to the management of the cables inside the device, which is neater and safer; the inner guide and the outer guide respectively guide the two ends of the telescopic cable to form a complementary situation, thereby providing more complete guidance for the telescopic cable.
[0006] The technical solution of the utility model is achieved in this way:
[0007] A device for double guiding of wiring inside and outside, comprising a telescopic sleeve, an electric push rod, a telescopic cable, an inner guide and an outer guide, wherein the electric push rod is vertically arranged in the telescopic sleeve, and the electric push rod is configured to drive the telescopic sleeve to telescope; the inner guide and the outer guide are both vertically arranged in the telescopic sleeve, and the inner guide and the outer guide are both located beside the electric push rod; the telescopic cable is vertically arranged in the telescopic sleeve, the telescopic cable is partially sleeved or wound outside the inner guide, and the telescopic cable is partially located in the outer guide; at least one cable is provided in the telescopic cable, and the cable extends from both ends of the telescopic cable and is configured to be used for electrical connection of the device; the telescopic cable is configured so that when the telescopic sleeve is extended, the telescopic cable is extended by the guidance of the inner guide and the outer guide, and when the telescopic sleeve is shortened, the telescopic cable is shortened by the guidance of the inner guide and the outer guide; the inner guide and the outer guide are configured so that when the telescopic cable is extended or shortened, the inner guide is used to guide the upper end or lower end of the telescopic cable, and the outer guide is used to guide the other end of the telescopic cable.
[0008] There is a retractable cable on the outside of the cable, which protects the cable to prevent the cable surface from aging and direct damage due to lifting and lowering movements. At the same time, when there are multiple cables, the retractable cable has the function of integrating multiple cables so that the multiple cables will not be scattered in the column; therefore, it not only plays a protective role but also has the function of cable management, making the wiring of the entire table more concise.
[0009] An inner guide is provided inside the telescopic cable, and an outer guide is provided outside the telescopic cable. Considering the cost, the inner guide is smaller in size and lower in cost than the telescopic tube, and the sum of the lengths of the inner guide and the outer guide is less than the longest length of the telescopic cable, thereby further reducing the material cost. In terms of effect, it is not necessary to guide all positions of the telescopic cable to achieve comprehensive guidance of the telescopic cable, which means that it is not necessary to use a telescopic tube to achieve guidance. This solution provides guides at both ends of the telescopic cable, which fails to cover the entire length of the telescopic cable, but can also achieve complementarity between the inner guide and the outer guide, thereby providing more complete guidance for the telescopic cable.
[0010] The difference between the telescopic cable being sleeved outside the inner guide and the telescopic cable being wrapped around the inner guide is whether there is a gap between the telescopic cable and the inner guide. If there is a gap between the telescopic cable and the inner guide, it is sleeved; when the telescopic cable is sleeved outside the inner guide, it is difficult to avoid slight shaking of the telescopic cable, while when the telescopic cable is wrapped around the inner guide, the telescopic cable will be subjected to additional pressure from the inner guide when it is stretched; while the telescopic cable is stretched, its inner diameter will also become smaller, and when the telescopic cable is wrapped around the inner guide, it will become tighter and tighter when it is stretched. Although the telescopic cable is elastic and will not be constrained from moving, the pressure and friction generated between the inner guide and the telescopic cable will increase, which will affect the movement smoothness of the device and the service life of the telescopic cable.
[0011] Preferably, the inner guide extends downward from the upper end of the telescopic sleeve or extends upward from the lower end of the telescopic sleeve, and the outer guide is located at the other end of the telescopic sleeve. The inner guide can achieve the above effect when it is located at the upper or lower end. Accordingly, the outer guide needs to be located at another position to complement the inner guide.
[0012] Preferably, the outer guide is a C-shaped tube. The advantage of the outer guide being a C-shaped tube is that the material cost is reduced, the installation of the outer guide and the telescopic cable is convenient, and the felt is also conveniently arranged in the outer guide.
[0013] Preferably, a vertical isolation tube is provided inside the telescopic sleeve, and the isolation tube includes a connecting tube body and the outer guide member; the connecting tube body is sleeved outside the electric push rod and connected to the electric push rod by screws; the isolation tube is configured to isolate the electric push rod from the telescopic cable. The isolation tube isolates the electric push rod from the telescopic cable, further ensuring that the telescopic cable does not hit the electric push rod, and also protecting the telescopic cable from being damaged by the electric push rod; at the same time, the outer guide member is sleeved outside the telescopic cable, adding an outer guide to the telescopic cable, and cooperates with the inner guide of the inner guide member, so that the telescopic cable is more stable when telescoping, and further reduces the shaking of the telescopic cable.
[0014] Preferably, the inner guide is arranged at the upper end of the telescopic sleeve and extends downward, and the isolation tube is arranged at the lower end of the telescopic sleeve and extends upward. When the inner guide and the isolation tube are arranged at both ends of the telescopic sleeve, the two have a better guiding effect on the telescopic cable when it is extended and retracted.
[0015] Preferably, the inner wall of the outer guide is provided with felt. In order to prevent the telescopic cable from hitting the inner wall of the outer guide and generating noise, the felt is provided inside the outer guide to increase the buffer and reduce the noise.
[0016] Preferably, the length of the inner guide is greater than half of the minimum length of the telescopic cable. When the telescopic cable is shortened to the shortest, the lower end of the inner guide is located below the middle of the telescopic cable, and only a small part of the telescopic cable is not sheathed or wrapped outside the inner guide; when the telescopic sleeve is extended to the longest, only a small part of the telescopic cable is outside the inner guide, but as the telescopic sleeve and the telescopic cable are shortened, the margin of the telescopic cable that can swing becomes larger and larger, and the diameter of the telescopic cable becomes larger and larger. When the possibility of knocking increases, more and more parts of the telescopic cable will be outside the inner guide, and correspondingly, the part of the telescopic cable that can shake becomes smaller and smaller, so that it is difficult for the telescopic cable to shake and knock the telescopic sleeve.
[0017] Preferably, the telescopic cable is an elastic spiral cable. When the telescopic sleeve is extended, the telescopic cable is stretched and expanded. When the telescopic sleeve is shortened, the telescopic cable is retracted and restored to its original shape. When the elastic spiral cable is extended, not only the length changes, but also the diameter changes. When the elastic spiral cable is extended, the diameter becomes smaller, and when the diameter becomes larger, the elastic spiral cable can be extended and retracted more stably by using the inner guide.
[0018] Preferably, an external interface electrically connected to the telescopic cable is provided on the lower end surface of the telescopic sleeve. The external interface is provided on the lower end surface of the telescopic sleeve. Since the lower end of the telescopic sleeve will be connected to the table legs of the lifting table, the external interface is a hidden external interface that cannot be seen by the user, making the entire table more beautiful. Compared with the external interface being located on the side of the telescopic sleeve, when it is located on the lower end surface of the telescopic sleeve, it is prevented from being kicked away accidentally.
[0019] Preferably, an electrical component is provided inside the lower end of the telescopic sleeve, and the external interface is provided on the electrical component and exposed downwardly from the lower end surface of the telescopic sleeve; the electrical component includes a housing, a protective switch and the external interface are provided inside the housing, the external interface protrudes downwardly from the housing, and the telescopic cable is connected to the external interface inside the housing; the protective switch includes a button, and the button selectively protrudes from the surface of the telescopic sleeve. The protective switch is an air switch, and its button can turn on or off the air switch, and the button can protrude from the side of the telescopic sleeve, making it more convenient to use and increasing safety.
[0020] Preferably, the external interface is a power interface and / or a signal line interface. When the external interface is a power interface, the external interface is electrically connected to the external power supply of the lifting table; when the external interface is a signal line interface, the external interface is electrically connected to the external network cable and other signal lines of the lifting table; there is not only one external interface, so it can have both a power interface and a signal line interface; this means that the cable in the telescopic cable can be a power line, a signal line such as a network cable, or both.
[0021] Preferably, one end of the electric push rod is close to the electrical component, and the telescopic sleeve, the electrical component and the electric push rod are connected by screws. The screws here are long screws, which install the electrical component and the electric push rod together on the telescopic sleeve, simplifying the installation steps.
[0022] Preferably, a motor box is provided on the telescopic sleeve, a motor is provided in the motor box, and the motor is configured to drive the electric push rod to move; a junction box is provided below the motor box, and the telescopic cable has a first straight line segment at the end of the motor box and the junction box, the first straight line segment faces the junction box, and the cable enters the junction box. The cables are gathered in the junction box to prevent the cables from appearing on the outer surface of the device, which is neat and safe.
[0023] Preferably, the junction box is provided with a connection port, which is located on the end surface of the junction box facing away from the telescopic sleeve. The connection port faces the middle of the lifting table, which is more beautiful than being set on the side and will not be exposed; it is more conducive to plugging and unplugging the connection line in the case of a wire groove, which is more ergonomic.
[0024] Preferably, a junction box is provided with a splitter, and the splitter is configured to be electrically connected to the control panel and the controller. When the cable is a power cable, the ground wire in the power cable is connected to the housing of the device, such as a motor box, a junction box or a telescopic sleeve, and the neutral wire and the live wire in the power cable are connected to the splitter, and the splitter separates two groups of neutral wires and live wires, so that the two groups of neutral wires and live wires are electrically connected to the control panel and the controller respectively, so as to supply power to the controller and the control panel.
[0025] As a preferred embodiment, a plurality of connection holes for expansion are provided on the lower end surface of the junction box, for example, it can be used to hang expansion components such as a computer case.
[0026] Preferably, an anti-pullout structure is provided at the end of the telescopic sleeve away from the inner guide, the anti-pullout structure comprising two spaced limiting bosses and a limiting portion located between the two limiting bosses, and the anti-pullout structure is configured to extend the telescopic cable when the telescopic sleeve is extended. The anti-pullout structure can not only extend the telescopic cable when the telescopic sleeve is extended, but also limit the telescopic cable to prevent the telescopic cable from extending synchronously with the telescopic sleeve.
[0027] Preferably, the anti-pull-out structure includes a first limit member and a second limit member, the telescopic cable has a second straight line segment at the anti-pull-out structure, and the limit boss is arranged on the second straight line segment; the first limit member and the second limit member are installed by screws along the left and right directions to form the limit portion, and an avoidance hole is formed in the middle of the limit portion for the second straight line segment to pass through, part of the second straight line segment between the two limit bosses is located in the avoidance hole, and the limit portion is located between the two limit bosses.
[0028] Preferably, one of the first limiting member and the second limiting member is provided with a spiral limiting structure, and the spiral limiting structure is provided with a continuous spiral limiting piece that is spiraled for at least two turns, and the telescopic cable is sleeved on the spiral limiting structure and limited by the spiral limiting piece. The spiral limiting structure plays a role in assisting the anti-pullout structure in limiting, and prevents the telescopic cable from being subjected to concentrated force.
[0029] Preferably, one of the first limiting member and the second limiting member is fixedly connected to the telescopic sleeve.
[0030] The design starting point, concept and beneficial effects of the utility model using the above technical solution are:
[0031] There is a retractable cable on the outside of the cable, which protects the cable to prevent the cable surface from aging and direct damage due to lifting and lowering movements. At the same time, when there are multiple cables, the retractable cable has the function of integrating multiple cables so that the multiple cables will not be scattered in the column; therefore, it not only plays a protective role but also has the function of cable management, making the wiring of the entire table more concise.
[0032] An inner guide is provided inside the telescopic cable, and an outer guide is provided outside the telescopic cable. Considering the cost, the inner guide is smaller in size and lower in cost than the telescopic tube, and the sum of the lengths of the inner guide and the outer guide is less than the longest length of the telescopic cable, thereby further reducing the material cost. In terms of effect, it is not necessary to guide all positions of the telescopic cable to achieve comprehensive guidance of the telescopic cable, which means that it is not necessary to use a telescopic tube to achieve guidance. This solution provides guides at both ends of the telescopic cable, which fails to cover the entire length of the telescopic cable, but can also achieve complementarity between the inner guide and the outer guide, thereby providing more complete guidance for the telescopic cable.
[0033] The difference between the telescopic cable being sleeved outside the inner guide and the telescopic cable being wrapped around the inner guide is whether there is a gap between the telescopic cable and the inner guide. If there is a gap between the telescopic cable and the inner guide, it is sleeved; when the telescopic cable is sleeved outside the inner guide, it is difficult to avoid slight shaking of the telescopic cable, while when the telescopic cable is wrapped around the inner guide, the telescopic cable will be subjected to additional pressure from the inner guide when it is stretched; while the telescopic cable is stretched, its inner diameter will also become smaller, and when the telescopic cable is wrapped around the inner guide, it will become tighter and tighter when it is stretched. Although the telescopic cable is elastic and will not be constrained from moving, the pressure and friction generated between the inner guide and the telescopic cable will increase, which will affect the movement smoothness of the device and the service life of the telescopic cable. BRIEF DESCRIPTION OF THE DRAWINGS
[0034] Figure 1 The three-dimensional structure of the device in the embodiment of the utility model is shown in FIG. Figure 1 ;
[0035] Figure 2 The three-dimensional structure of the device in the embodiment of the utility model is shown in FIG. Figure 2 ;
[0036] Figure 3 It is a schematic diagram of the three-dimensional structure of the telescopic cable and the electric push rod inside the telescopic sleeve in the embodiment of the utility model;
[0037] Figure 4 It is a schematic diagram of the three-dimensional structure of the inner guide member and the isolation tube inside the telescopic sleeve in the embodiment of the utility model;
[0038] Figure 5 The three-dimensional structure of the telescopic cable in the embodiment of the utility model is shown in FIG. Figure 1 ;
[0039] Figure 6 The three-dimensional structure of the telescopic cable in the embodiment of the utility model is shown in FIG. Figure 2 ;
[0040] Figure 7 This is a schematic diagram of the three-dimensional structure inside the motor box in the embodiment of the utility model;
[0041] Figure 8 It is a three-dimensional structural schematic diagram of the electrical components in the embodiment of the utility model;
[0042] Fig. 9 This is a three-dimensional structural diagram of the external interface and the protection switch inside the electrical component in the embodiment of the utility model;
[0043] Fig.10 This is a three-dimensional structural diagram of the internal connection port and the splitter of the junction box in the embodiment of the utility model;
[0044] Fig.11 It is a schematic diagram of the three-dimensional structure of the limiting plate in the embodiment of the utility model;
[0045] Fig.12 It is a schematic diagram of the three-dimensional structure of the first limiting member and the second limiting member in the embodiment of the utility model;
[0046] Fig.13 It is a schematic diagram of the three-dimensional structure of the first limiting member in the embodiment of the utility model;
[0047] Fig.14 A length comparison diagram of the telescopic cable and the inner guide member in an embodiment of the utility model;
[0048] Fig.15 It is a schematic diagram of the three-dimensional structure of the isolation tube in the embodiment of the utility model.
[0049] The figures are marked as follows: telescopic sleeve 1; electric push rod 2; telescopic cable 3; first straight segment 31; second straight segment 32; inner guide 4; cable 5; motor box 6; motor 7; electrical component 8; housing 81; protection switch 82; external interface 83; button 84; connection port 9; junction box 10; splitter 11; limit plate 12; opening 13; first limit groove 14; limit seat 15; second limit groove 16; limit boss 17; limit portion 18; first limit member 19; second limit member 20; avoidance hole 21; spiral limit structure 22; spiral limit plate 221; isolation tube 23; outer guide 24; connecting tube body 25; connecting hole 26. Implementation
[0050] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
[0051] In the following description, many specific details are set forth to facilitate 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 protection scope of the present invention is not limited to the specific embodiments disclosed below.
[0052] In the description of the present invention, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance.
[0053] The specific implementation of the utility model is as follows:
[0054] like Figure 1-4 As shown, the utility model provides a device with internal and external dual guides for wiring, which is a lifting column, comprising a telescopic sleeve 1, an electric push rod 2, a telescopic cable 3 and an inner guide 4, wherein the electric push rod 2 is vertically arranged in the telescopic sleeve 1, and the electric push rod 2 is configured to drive the telescopic sleeve 1 to telescope; the inner guide 4 is vertically arranged in the telescopic sleeve 1, and the inner guide 4 is located beside the electric push rod 2; the telescopic cable 3 is vertically arranged in the telescopic sleeve 1 and is partially sleeved or wound around the inner guide 4, at least one cable 5 is provided in the telescopic cable 3, and the cable 5 extends from both ends of the telescopic cable 3 and is configured to be used for electrical connection of the device; the telescopic cable 3 and the inner guide 4 are configured such that when the telescopic sleeve 1 is extended, the telescopic cable 3 is extended by the guidance of the inner guide 4, and when the telescopic sleeve 1 is shortened, the telescopic cable 3 is shortened by the guidance of the inner guide 4.
[0055] A telescopic cable 3 is provided on the outside of the cable 5, and the cable 5 is protected by the telescopic cable 3 to prevent the surface of the cable 5 from aging and direct damage due to lifting and lowering movements. At the same time, when there are multiple cables 5, the telescopic cable 3 has the function of integrating the multiple cables 5 so that the multiple cables 5 will not be scattered in a disorderly manner in the column; therefore, it has the function of cable management while playing a protective role, making the wiring of the entire table more concise.
[0056] In terms of noise, when the telescopic cable 3 is arranged separately in the telescopic sleeve 1, the telescopic cable 3 will shake due to its rapid shortening, so the telescopic cable 3 will hit the telescopic sleeve 1 and generate noise; when a pipe is arranged outside the telescopic cable 3, the pipe will also be hit. The telescopic cable 3 in this solution is sleeved or wrapped around the inner guide 4, which can avoid the possibility of hitting the external pipe. At the same time, the inner guide 4 can prevent or reduce the shaking of the telescopic cable 3 when telescoping, and will not hit the telescopic sleeve 1, which is a more reasonable structure.
[0057] The advantage of using the inner guide 4 is that it saves materials and the friction surface between the inner guide 4 and the telescopic cable 3 is smaller.
[0058] The difference between the telescopic cable 3 being sheathed outside the inner guide 4 and the telescopic cable 3 being wound outside the inner guide 4 is whether there is a gap between the telescopic cable 3 and the inner guide 4. If there is a gap between the telescopic cable 3 and the inner guide 4, it is sheathed; when the telescopic cable 3 is sheathed outside the inner guide 4, it is difficult to avoid the slight shaking of the telescopic cable 3, and when the telescopic cable 3 is wound outside the inner guide 4, the telescopic cable 3 will be subjected to additional pressure from the inner guide 4 when it is extended; while the telescopic cable 3 is extended, its inner diameter will also decrease, and the telescopic cable 3 will be wound outside the inner guide 4, and will be wound tighter and tighter when it is extended. Although the telescopic cable 3 is elastic and will not cause a constraint that it cannot move, the pressure and friction generated between the inner guide 4 and the telescopic cable 3 will increase, which will affect the smoothness of the movement of the device and the service life of the telescopic cable 3. In this embodiment, there is a gap between the telescopic cable 3 and the inner guide 4, and the telescopic cable 3 is sheathed outside the inner guide 4.
[0059] like Figure 5 , 6 As shown, the telescopic cable 3 is an elastic spiral cable. When the telescopic sleeve 1 is extended, the telescopic cable 3 is stretched and expanded. When the telescopic sleeve 1 is shortened, the telescopic cable 3 is recovered and restored to its original shape. When the elastic spiral cable is extended or retracted, not only the length but also the diameter of the elastic spiral cable will change. The diameter will become smaller when extended and larger when shortened. By using the elastic spiral cable in combination with the inner guide 4, the extension and retraction of the elastic spiral cable will be more stable.
[0060] Specifically, if Figure 1 , 7-9, the device also includes a motor box 6, which is arranged at the upper end of the telescopic sleeve 1, and a motor 7 is arranged in the motor box 6. The electric push rod 2 includes a screw and a push rod shell. The push rod shell is provided with a nut connected to the screw thread. The upper end of the screw is exposed from the push rod shell and is transmission-connected to the motor 7. The motor 7 is configured to drive the screw to rotate and make the electric push rod 2 telescopic movement; an electrical component 8 is arranged below the electric push rod 2, and the electrical component 8 includes a shell 81. A protection switch 82 and an external interface 83 electrically connected to the telescopic cable 3 are arranged in the shell 81. The lower end of the push rod shell is in contact with the electrical component 8, and the telescopic sleeve 1, the electrical component 8 and the electric push rod 2 are connected by screws; the external interface 83 protrudes downward from the shell 81, the telescopic cable 3 is connected to the external interface 83 inside the shell 81, and the external interface 83 is exposed downward from the telescopic sleeve The lower end surface of the tube 1; when the external interface 83 is a power interface, the external interface 83 is electrically connected to the external power supply of the lifting table; when the external interface 83 is a signal line interface, the external interface 83 is electrically connected to the signal line such as the external network cable of the lifting table; there is not only one external interface 83, so it can have both a power interface and a signal line interface; this means that the cable 5 in the telescopic cable 3 can be a power line, or a signal line such as a network cable, or both can coexist; the external interface 83 is arranged on the lower end surface of the telescopic sleeve 1. Since the lower end of the telescopic sleeve 1 will be connected to the table leg of the lifting table, the external interface 83 is a hidden external interface 83, which cannot be seen by the user, making the whole table more beautiful; compared with the external interface 83 being located on the side of the telescopic sleeve 1, when it is located on the lower end surface of the telescopic sleeve 1, it is prevented from being kicked open accidentally.
[0061] Correspondingly, such as Figure 1 , 2 As shown in Figures 1 and 10, the device also has a connection port 9 for electrically connecting the telescopic cable 3 to the inside of the lifting table. Specifically, a junction box 10 is provided below the motor box 6. The telescopic cable 3 has a first straight section 31 at the upper end. The first straight section 31 faces the junction box 10, and the cable 5 enters the junction box 10. The junction box 10 gathers the cables 5 to prevent the cables 5 from appearing on the surface of the device, which is neat and safe. The connection port 9 is provided on the junction box 10. The connection port 9 is located on the end surface of the junction box 10 facing away from the telescopic sleeve 1, that is, the connection port 9 faces the middle of the lifting table, which is more beautiful than being provided on the side and will not be exposed. It is also more conducive to plugging and unplugging the connection cable in the case of a cable trough, which is more ergonomic. The type of the connection port 9 is the same as the type of the external interface 83. In this embodiment, the cable 5 is a power cord, the external interface 83 is a power interface, and the connection port 9 is also a power interface.
[0062] A junction box 10 is also provided with a splitter 11, which is configured to be electrically connected to the control panel and the controller; when the cable 5 is a power line, the ground wire in the power line is connected to the housing 81 of the device, such as the motor box 6, the junction box 10 or the telescopic sleeve 1, and the neutral wire and the live wire in the power line are connected to the splitter 11, and the splitter 11 divides two groups of neutral wires and live wires, so that the two groups of neutral wires and live wires are electrically connected to the control panel and the controller respectively to supply power to the controller and the control panel; the lower end surface of the junction box 10 is provided with a plurality of connection holes 26 for expansion, such as for hanging expansion components such as computer cases. The above-mentioned protection switch 82 includes a button 84, and the button 84 selectively protrudes from the surface of the telescopic sleeve 1; the protection switch 82 is an air switch, and its button 84 can turn off or on the air switch, and the button 84 can protrude from the side of the telescopic sleeve 1, making it more convenient to use and improving safety.
[0063] like Figure 7 , 10 As shown in Figures 11, a limit plate 12 is arranged in the motor box 6, an opening 13 is arranged at the bottom of the motor box 6, the telescopic cable 3 enters the motor box 6 from bottom to top through the opening 13, a first limit groove 14 is arranged on the limit plate 12, the telescopic cable 3 is inserted into the first limit groove 14 after entering the motor box 6, and the first straight line segment 31 is exposed upward from the limit plate 12; an upwardly extending limit seat 15 is arranged on the limit plate 12, a second limit groove 16 is arranged on the limit seat 15, two spaced limit bosses 17 are arranged on the first straight line segment 31, the first straight line segment 31 enters the second limit groove 16 and makes the limit seat 15 located between the two limit bosses 17.
[0064] Correspondingly, if Figure 3 , 4As shown in , 12 and 13, an anti-pull structure is provided at the lower end of the electric push rod 2, and the anti-pull structure includes two spaced limiting bosses 17 and a limiting portion 18 located between the two limiting bosses 17, and the anti-pull structure is configured to stretch the telescopic cable 3 when the telescopic sleeve 1 is extended; the anti-pull structure is used together with the above-mentioned limiting plate 12, which can not only stretch the telescopic cable 3 when the telescopic sleeve 1 is extended, but also limit the telescopic cable 3 to prevent the telescopic cable 3 from being out of synchronous extension with the telescopic sleeve 1; further, the anti-pull structure includes a first The stopper 19 and the second stopper 20, the telescopic cable 3 has a second straight segment 32 at the anti-pulling structure, and the stopper boss 17 in the anti-pulling structure is arranged on the second straight segment 32; the first stopper 19 and the second stopper 20 are installed in the left and right directions by screws to form the stopper 18, and the middle of the stopper 18 is formed with an avoidance hole 21 for the second straight segment 32 to pass through, and part of the second straight segment 32 between the two stopper bosses 17 is located in the avoidance hole 21, and the stopper 18 is located between the two stopper bosses 17. In the first stopper 19 and the second stopper 20, the second stopper 20 is connected to the telescopic sleeve 1 by screws, and the first stopper 19 is connected to the second stopper 20 by screws.
[0065] Furthermore, a spiral limiting structure 22 is provided on the first limiting member 19, and a continuous spiral limiting piece 221 is provided on the spiral limiting structure 22 which is spiraled for at least two turns. The telescopic cable 3 is sleeved on the spiral limiting structure 22 and limited by the spiral limiting piece 221; the spiral limiting structure 22 plays a role in assisting the anti-pullout structure in limiting the position, thereby preventing the telescopic cable 3 from being subjected to force concentration.
[0066] like Fig.14 As shown, in this embodiment, the length of the inner guide 4 is greater than half of the minimum length of the telescopic cable 3; when the telescopic cable 3 is shortened to the shortest, the lower end of the inner guide 4 is located below the middle of the telescopic cable 3, and only a small part of the telescopic cable 3 is not sheathed or wrapped around the inner guide 4; when the telescopic sleeve 1 is extended to the longest, only a small part of the telescopic cable 3 is outside the inner guide 4, but as the telescopic sleeve 1 and the telescopic cable 3 are shortened, the margin for the telescopic cable 3 to swing becomes larger and larger, and the diameter of the telescopic cable 3 also becomes larger and larger. While the possibility of knocking becomes greater, since more and more parts of the telescopic cable 3 will be outside the inner guide 4, correspondingly, the part of the telescopic cable 3 that can shake becomes smaller and smaller, so that it is difficult for the telescopic cable 3 to shake and knock the telescopic sleeve 1.
[0067] The inner guide 4 extends downward at the upper end of the telescopic sleeve 1 or extends upward at the lower end of the telescopic sleeve 1, that is, the inner guide 4 can achieve the above effect whether it is located at the top or the bottom. In the present embodiment, the inner guide 4 is arranged at the upper end of the telescopic sleeve 1 and extends downward; in addition, a vertical isolation tube 23 is also provided in the telescopic sleeve 1, and the isolation tube 23 can also extend downward at the upper end of the telescopic sleeve 1 or extend upward at the lower end of the telescopic sleeve 1. In the present embodiment, the isolation tube 23 is arranged at the lower end of the telescopic sleeve 1 and extends upward. The isolation tube 23 is connected to the electric push rod 2, wherein the second limit member 20 is located at the lower end of the isolation tube 23; when the inner guide 4 and the isolation tube 23 are arranged at both ends of the telescopic sleeve 1, the two have a better guiding effect on the telescopic cable 3 when it is telescoping.
[0068] The telescopic cable 3 is partially located in the outer guide 24; when the telescopic sleeve 1 is extended, the telescopic cable 3 is extended by the guidance of the inner guide 4 and the outer guide 24, and when the telescopic sleeve 1 is shortened, the telescopic cable 3 is shortened by the guidance of the inner guide 4 and the outer guide 24; the inner guide 4 and the outer guide 24 are configured so that when the telescopic cable 3 is extended or shortened, the inner guide 4 is used to guide the upper end or the lower end of the telescopic cable 3, and the outer guide 24 is used to guide the other end of the telescopic cable 3.
[0069] An inner guide 4 is provided inside the telescopic cable 3, and an outer guide 24 is provided outside the telescopic cable 3. Considering the cost, compared with the telescopic pipe, the inner guide 4 is smaller in size and lower in cost, and the sum of the lengths of the inner guide 4 and the outer guide 24 is less than the longest length of the telescopic cable 3, which further reduces the material cost. In terms of effect, it is not necessary to guide all positions of the telescopic cable 3 to achieve comprehensive guidance of the telescopic cable 3, which means that it is not necessary to use a telescopic pipe to achieve guidance. In this solution, guides are provided at both ends of the telescopic cable 3, which fails to include the full length of the telescopic cable 3, but the inner guide 4 and the outer guide 24 can complement each other, thereby providing more complete guidance for the telescopic cable 3.
[0070] Specifically, if Figure 3 , 4As shown in Figures 1 and 15, the isolation tube 23 includes an integrally formed outer guide 24 and a connecting tube body 25. The outer guide 24 is a C-shaped tube, which is sleeved outside the telescopic cable 3; the connecting tube body 25 is a square tube, which is sleeved outside the electric push rod 2 and connected to the electric push rod 2 by screws; the isolation tube 23 is configured to isolate the electric push rod 2 from the telescopic cable 3; a felt is provided on the inner wall of the outer guide 24 to prevent the telescopic cable 3 from hitting the inner wall of the outer guide 24 and generating noise, and the felt can play a role in buffering and reducing noise; the isolation tube 23 separates the electric push rod 2 from the telescopic cable 3. The rod 2 is isolated from the telescopic cable 3, which further ensures that the telescopic cable 3 will not hit the electric push rod 2, and also protects the telescopic cable 3 from being damaged by the electric push rod 2; at the same time, the outer guide 24 is sleeved on the outside of the telescopic cable 3, adding an external guide to the telescopic cable 3, and cooperating with the internal guide of the inner guide 4, the telescopic cable 3 is more stable when telescopic, and the shaking of the telescopic cable 3 is further reduced; and the advantage of the outer guide 24 being a C-shaped tube is that it is convenient for the installation of the outer guide 24 and the telescopic cable 3, and it is also convenient to set the felt in the outer guide 24.
Claims
1. A device with dual internal and external guides for wiring, characterized in that: The invention comprises a telescopic sleeve, an electric push rod, a telescopic cable, an inner guide and an outer guide, wherein the electric push rod is vertically arranged in the telescopic sleeve, and the electric push rod is configured to drive the telescopic sleeve to telescope; the inner guide and the outer guide are both vertically arranged in the telescopic sleeve, and the inner guide and the outer guide are both located beside the electric push rod; the telescopic cable is vertically arranged in the telescopic sleeve, the telescopic cable is partially sleeved or wound around the inner guide and the telescopic cable is partially located in the outer guide; at least one cable is provided in the telescopic cable, and the cable extends from both ends of the telescopic cable and is configured to be used for electrical connection of the device; the telescopic cable is configured such that when the telescopic sleeve is extended, the telescopic cable is extended by the guidance of the inner guide and the outer guide, and when the telescopic sleeve is shortened, the telescopic cable is shortened by the guidance of the inner guide and the outer guide; the inner guide and the outer guide are configured such that when the telescopic cable is extended or shortened, the inner guide is used to guide the upper end or lower end of the telescopic cable, and the outer guide is used to guide the other end of the telescopic cable.
2. The device for double guiding the wiring inside and outside according to claim 1, characterized in that: The inner guide extends downward from the upper end of the telescopic sleeve or extends upward from the lower end of the telescopic sleeve, and the outer guide is located at the other end of the telescopic sleeve.
3. The device for guiding both inside and outside the wiring according to claim 1, characterized in that: The outer guide member is a C-shaped tube.
4. The device for double guiding the wiring inside and outside according to claim 3, characterized in that: A vertical isolation tube is arranged inside the telescopic sleeve, and the isolation tube comprises a connecting tube body and the outer guide member; the connecting tube body is sleeved outside the electric push rod and connected to the electric push rod by screws; the isolation tube is configured to isolate the electric push rod from the telescopic cable.
5. The device for guiding both inside and outside the wiring according to claim 4, characterized in that: The inner guide is arranged at the upper end of the telescopic sleeve and extends downward, and the isolation tube is arranged at the lower end of the telescopic sleeve and extends upward.
6. The device for guiding both inside and outside the wiring according to claim 3, characterized in that: The inner wall of the outer guide is provided with felt.
7. The device for guiding both inside and outside the wiring according to claim 1, characterized in that: The lengths of the inner guide and the outer guide are both greater than half of the minimum length of the telescopic cable.
8. The device for double guiding the wiring inside and outside according to claim 1, characterized in that: The telescopic cable is an elastic spiral cable. When the telescopic sleeve is extended, the telescopic cable is stretched and expanded. When the telescopic sleeve is shortened, the telescopic cable is retracted and restored to its original shape.
9. The device for double guiding the wiring inside and outside according to claim 1, characterized in that: An external interface electrically connected to the telescopic cable is provided on the lower end surface of the telescopic sleeve.
10. The device for double guiding the wiring inside and outside according to claim 9, characterized in that: An electrical component is provided inside the lower end of the telescopic sleeve, and the external interface is provided on the electrical component and exposed downwardly from the lower end surface of the telescopic sleeve; the electrical component includes a shell, a protective switch and the external interface are provided inside the shell, the external interface protrudes downwardly from the shell, and the telescopic cable is connected to the external interface inside the shell; The protection switch includes a button, which selectively protrudes from the surface of the telescopic sleeve.
11. The device for double guiding the wiring inside and outside according to claim 9, characterized in that: The external interface is a power interface and / or a signal line interface.
12. The device for double guiding the wiring inside and outside according to claim 9, characterized in that: One end of the electric push rod is in contact with the electrical component, and the telescopic sleeve, the electrical component and the electric push rod are connected by screws.
13. The device for double guiding the wiring inside and outside according to claim 1, characterized in that: A motor box is provided on the telescopic sleeve, and a motor is provided in the motor box. The motor is configured to drive the electric push rod to move; A junction box is provided below the motor box. The telescopic cable has a first straight line segment at the end where the motor box and the junction box are located. The first straight line segment faces the junction box, and the cable enters the junction box.
14. The device for guiding both inside and outside the wiring according to claim 13, characterized in that: The junction box is provided with a connection port, which is located on the end surface of the junction box facing away from the telescopic sleeve.
15. The device for guiding both inside and outside the wiring according to claim 13, characterized in that: A splitter is arranged in the junction box, and the splitter is configured to be electrically connected to the control panel and the controller.
16. The device for double guiding the wiring inside and outside according to claim 13, characterized in that: A plurality of connection holes for expansion are provided on the lower end surface of the junction box.
17. The device for double guiding the wiring inside and outside according to claim 1, characterized in that: An anti-pull structure is provided at the end of the telescopic sleeve away from the inner guide. The anti-pull structure includes two spaced-apart limiting bosses and a limiting portion located between the two limiting bosses. The anti-pull structure is configured to lengthen the telescopic cable when the telescopic sleeve is extended.
18. The device for double guiding the wiring inside and outside according to claim 17, characterized in that: The anti-pull-out structure includes a first limit piece and a second limit piece. The telescopic cable has a second straight line segment at the anti-pull-out structure, and the limit boss is arranged on the second straight line segment. The first limit piece and the second limit piece are installed by screws in the left and right directions to form the limit portion. An avoidance hole is formed in the middle of the limit portion for the second straight line segment to pass through. Part of the second straight line segment between the two limit bosses is located in the avoidance hole, and the limit portion is located between the two limit bosses.
19. The device for double guiding the wiring inside and outside according to claim 18, characterized in that: A spiral limiting structure is provided on one of the first limiting member and the second limiting member, and a continuous spiral limiting piece which spirals at least twice is provided on the spiral limiting structure. The telescopic cable is sleeved on the spiral limiting structure and limited by the spiral limiting piece.
20. The device for double guiding the wiring inside and outside according to claim 18, characterized in that: One of the first limiting member and the second limiting member is fixedly connected to the telescopic sleeve.