Wire fixing structure and lifting stand column

Abstract

The utility model provides a wire fixing structure and a lifting stand column, the wire fixing structure comprises a body, and a first limiting groove on the body and a second limiting groove on a limiting seat are used for fixing a spiral cable; an isolation part is convexly arranged on the body towards the direction of the spiral cable, and the isolation part can surround or half surround the spiral cable; the lifting stand column comprises a motor box, the spiral cable and the cable fixing structure, the cable fixing structure is arranged in the motor box, an avoiding hole used for avoiding the spiral cable is formed in the motor box, the upper end of the spiral cable penetrates through the avoiding hole from bottom to top and is arranged on the cable fixing structure, and the isolation part protrudes downwards into the avoiding hole. The motor box is separated from the spiral cable by the isolation part; the avoiding hole of the motor box is the ring opening of the metal plate and has the possibility of cutting the spiral cable, and the isolation part of the wire fixing structure separates the ring opening from the spiral cable, so that the spiral cable cannot rub the ring opening of the plate, the abrasion of the spiral cable is prevented, and the service life of the spiral cable is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of furniture, in particular to a wire fixing structure and a lifting column. 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] When the cable is set inside the table column, a spiral cable is generally selected to achieve synchronous extension and retraction of the cable and the table column when they are raised or lowered. Therefore, a fixed wire structure needs to be set inside the table column to fix the two ends of the spiral cable.

[0005] Generally speaking, the two ends of the spiral cable will be fixed at the lower end of the motor box and the push rod respectively, and the upper end of the spiral cable will enter the motor box to achieve the effect of not exposing the internal cable, that is, the cable is still hidden in the motor box or the junction box. Therefore, an avoidance hole for avoiding the spiral cable is opened on the motor box. When the spiral cable is extended and retracted, it is easy to shake, and then friction is generated at the avoidance hole of the motor box. The sharper edge of the metal motor box can easily wear the spiral cable, affecting the service life of the spiral cable. Summary of the invention

[0006] In order to solve the above-mentioned technical problems, the utility model provides a wire fixing structure, including a main body, a first limit groove on the main body and a second limit groove on the limit seat for fixing the spiral cable; an isolation portion is protruded on the main body toward the direction of the spiral cable, and the isolation portion can surround or semi-surround the spiral cable, thereby preventing the spiral cable at the connection with the wire fixing structure from being worn, protecting the spiral cable and extending its service life.

[0007] Furthermore, a lifting column is provided, comprising a motor box, a spiral cable and the above-mentioned fixed line structure, wherein the fixed line structure is arranged in the motor box, and an avoidance hole for avoiding the spiral cable is opened on the motor box, and the upper end of the spiral cable passes through the avoidance hole from bottom to top and is arranged on the fixed line structure, and the isolation part protrudes downward into the avoidance hole, and the isolation part separates the motor box from the spiral cable; the avoidance hole of the motor box is a circle of sheet metal, which may cut the spiral cable, and the isolation part of the fixed line structure is between the circle and the spiral cable, separating the circle from the spiral cable, and the spiral cable will not rub against the circle of the plate, thereby preventing the wear of the spiral cable and extending the service life of the spiral cable.

[0008] The technical solution of the utility model is achieved in this way:

[0009] A wire fixing structure comprises a main body, on which a first limiting groove for clamping an end ring of a spiral cable is provided; a limiting seat is also provided on the main body, on which a second limiting groove for clamping a straight section of the spiral cable is provided; and an isolating portion is protruded from the main body toward the direction of the spiral cable, and the isolating portion is configured to surround or semi-surround the spiral cable.

[0010] The first limiting groove on the main body and the second limiting groove on the limiting seat are used to fix the spiral cable, and the isolation portion can surround or semi-surround the spiral cable, thereby preventing the spiral cable from being worn at the connection with the fixed wire structure, protecting the spiral cable and extending its service life.

[0011] Preferably, the end of the body away from the limiting seat is the distal end, and the first limiting groove is provided on the body between the limiting seat and the distal end. Compared with the prior art in which the first limiting groove is provided at the distal end, it is more reasonable to set the end ring to the first limiting groove and the straight line segment to the second limiting groove, and the fixed line structure and the spiral cable are more convenient to install.

[0012] As an advantage, the body and the limiting seat are perpendicular to each other, and the first limiting groove and the second limiting groove are perpendicular to each other. The spiral cable is clamped in the bidirectional limiting groove to achieve a stable line fixing function.

[0013] Preferably, the body is arranged horizontally, the limiting seat is arranged vertically, the first limiting groove is formed by the body being recessed inwards on the horizontal plane, and the second limiting groove is formed by the limiting seat being recessed from top to bottom on the vertical plane. When the fixed wire structure is connected to the spiral cable, the straight section of the spiral cable will be horizontal, and the parts from the end ring downwards will be vertical. Therefore, the first limiting groove is on the horizontal plane to accommodate the clamping of the end ring, and the second limiting groove is on the vertical plane to accommodate the clamping of the straight section, and the bidirectional clamping is conducive to firmly fixing the cable.

[0014] A lifting column comprises a motor box, a spiral cable and a wire fixing structure as described above, wherein the wire fixing structure is arranged in the motor box, and the spiral cable is arranged vertically; an avoidance hole for avoiding the spiral cable is opened on the motor box, and the upper end of the spiral cable passes through the avoidance hole from bottom to top and is arranged on the wire fixing structure, the spiral cable comprises a straight section located at the upper end and an end ring located below the straight section, the end ring is clamped in the first limiting groove, and the straight section is clamped in the second limiting groove; the isolation portion protrudes downward into the avoidance hole, and the isolation portion separates the motor box from the spiral cable.

[0015] The avoidance hole of the motor box is the circle of the sheet metal, which may cut the spiral cable. The isolation part of the wire fixing structure is between the circle and the spiral cable, separating the circle from the spiral cable. The spiral cable will not rub against the circle of the plate, thereby preventing the wear of the spiral cable and extending the service life of the spiral cable.

[0016] Preferably, the isolating part has a notch formed at the opening of the first limiting groove, and the isolating part half surrounds the spiral cable. The notch formed on the isolating part facilitates the spiral cable to enter the first limiting groove from the opening of the first limiting groove to achieve a fixing effect.

[0017] Preferably, a fixing plate for mounting the motor is provided in the motor box, and the fixing plate is attached to the side of the main body; in the avoidance hole, the portion of the motor box and the spiral cable that is not separated by the isolation portion is an exposed portion, and the fixing plate is configured to shield the exposed portion. Due to the gap in the isolation portion, the isolation portion cannot completely protect the spiral cable, and the portion that is not separated between the spiral cable and the motor box becomes an exposed portion. The exposed portion is shielded by the solution that the fixing plate for fixing the motor is attached to the side of the main body, that is, the fixing plate forms a limit on the spiral cable, and the spiral cable cannot cross the fixing plate and contact the exposed portion, thereby achieving comprehensive protection of the spiral cable.

[0018] Preferably, the lifting column is further provided with a vertical guide rod, which is coaxially arranged in the spiral cable, and the body is provided with a plug-in portion protruding downward, and the plug-in portion is provided with a plug-in hole from bottom to top, and the guide rod is inserted into the plug-in hole. The guide rod can be used to guide the spiral cable to extend and retract, and prevent the spiral cable from shaking excessively and hitting the lifting column; the fixed line structure can not only fix the spiral cable, but also fix the guide rod, achieving multiple goals at one stroke.

[0019] Preferably, a vertical convex strip is provided on the inner wall of the plug hole, and an anti-rotation groove is provided on the guide rod accordingly. When the guide rod is inserted into the plug hole, the convex strip enters the anti-rotation groove. The fixed wire structure is connected to the guide rod by screws, and the convex strip cooperates with the anti-rotation groove to stably install the guide rod and prevent the guide rod from passively rotating and disconnecting from the fixed wire structure.

[0020] Preferably, the lower end of the isolation portion protrudes downward from the lower end surface of the motor box. The isolation portion only slightly protrudes from the motor box, but can still protect the spiral cable from contacting the ring opening of the plate when the spiral cable shakes from bottom to top.

[0021] The design starting point, concept and beneficial effects of the utility model using the above technical solution are:

[0022] The first limiting groove on the main body and the second limiting groove on the limiting seat are used to fix the spiral cable, and the isolation portion can surround or semi-surround the spiral cable, thereby preventing the spiral cable from being worn at the connection with the fixed wire structure, protecting the spiral cable and extending its service life.

[0023] Furthermore, the avoidance hole of the motor box is a circle of the sheet metal, which may cut the spiral cable, and the isolation part of the wire fixing structure is between the circle and the spiral cable, separating the circle from the spiral cable. The spiral cable will not rub against the circle of the plate, thereby preventing the wear of the spiral cable and extending the service life of the spiral cable.

[0024] Furthermore, the notch formed on the isolation portion facilitates the spiral cable to enter the first limiting groove from the opening of the first limiting groove to achieve a fixing effect; due to the notch on the isolation portion, the isolation portion cannot completely protect the spiral cable, and the unseparated portion between the spiral cable and the motor box becomes an exposed portion, and the exposed portion is shielded by a fixing plate for fixing the motor that is disposed against the side of the main body, that is, the fixing plate limits the spiral cable, and the spiral cable cannot cross the fixing plate and contact the exposed portion, thereby achieving comprehensive protection of the spiral cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The three-dimensional structure of the lifting column in the embodiment of the utility model is shown in FIG. Figure 1 ;

[0026] Figure 2 The three-dimensional structure of the lifting column in the embodiment of the utility model is shown in FIG. Figure 2 ;

[0027] Figure 3 This is a schematic diagram of the three-dimensional structure of the spring cable and the actuator inside the telescopic sleeve in the embodiment of the utility model;

[0028] Figure 4 It is a schematic diagram of the three-dimensional structure of the guide rod and the enclosure member inside the telescopic sleeve in the embodiment of the utility model;

[0029] Figure 5 The three-dimensional structure of the spring cable in the embodiment of the utility model is shown in FIG. Figure 1 ;

[0030] Figure 6 The three-dimensional structure of the spring cable in the embodiment of the utility model is shown in FIG. Figure 2 ;

[0031] Figure 7 This is a schematic diagram of the three-dimensional structure inside the motor box in the embodiment of the utility model;

[0032] Figure 8 It is a three-dimensional structural schematic diagram of the electrical components in the embodiment of the utility model;

[0033] 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;

[0034] 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;

[0035] Fig.11 The three-dimensional structure of the wire fixing structure in the embodiment of the utility model is shown in FIG. Figure 1 ;

[0036] Fig.12 This is a schematic diagram of a three-dimensional structure in which a locking member is installed on a push rod housing in an embodiment of the utility model;

[0037] Fig.13 It is a three-dimensional structural schematic diagram of the locking member in the embodiment of the utility model;

[0038] Fig.14 A length comparison diagram of a spring cable and a guide rod in an embodiment of the present utility model;

[0039] Fig.15 It is a three-dimensional structural schematic diagram of the enclosure member in the embodiment of the utility model;

[0040] Fig.16 The three-dimensional structure of the spiral cable arranged in the locking member in the embodiment of the utility model is shown in FIG. Figure 1 ;

[0041] Fig.17 The three-dimensional structure of the spiral cable arranged in the locking member in the embodiment of the utility model is shown in FIG. Figure 2 ;

[0042] Fig.18 The three-dimensional structure of the wire fixing structure in the embodiment of the utility model is shown in FIG. Figure 2 ;

[0043] Fig.19 This is a schematic diagram of the three-dimensional structure in which the upper end of the spiral cable is fixed in the motor box by the fixing structure in the embodiment of the utility model Figure 1 ;

[0044] Fig. 20 This is a schematic diagram of the three-dimensional structure in which the upper end of the spiral cable is fixed in the motor box by the fixing structure in the embodiment of the utility model Figure 2 ;

[0045] Fig.21 A top view of the exposed portion shielded by the fixed plate in an embodiment of the utility model;

[0046] Fig. 22 This is a bottom view of the exposed portion shielded by the fixed plate in the embodiment of the utility model.

[0047] The figures are marked as follows: telescopic sleeve 1; actuator 2; spiral cable 3; first straight segment 31; second straight segment 32; guide rod 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; main body 12; avoidance hole 13; first limit groove 14; limit seat 15; second limit groove 16; limit boss 17; limit portion 18; locking piece 19; mounting portion 191; constraint portion 192; wire clamping window 20; wire clamping groove 21; enclosure 23; baffle 24; clamping piece 25; connecting hole 26; lower end ring 27; pressure plate 28; upper end ring 29; distal end 30; isolation portion 33; fixing plate 34; exposed portion 35; plug-in portion 36; plug-in hole 37; convex strip 38; anti-rotation groove 39. Implementation

[0048] 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.

[0049] 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.

[0050] 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.

[0051] The specific implementation of the utility model is as follows:

[0052] like Figure 1-4As shown, the utility model provides a fixed line structure, which is applied to a lifting column. Specifically, the lifting column includes a telescopic sleeve 1, an actuator 2, a spiral cable 3 and a guide rod 4. The actuator 2 is vertically arranged in the telescopic sleeve 1, and the actuator 2 is configured to drive the telescopic sleeve 1 to telescope; the guide rod 4 is vertically arranged in the telescopic sleeve 1, and the guide rod 4 is located beside the actuator 2; the spiral cable 3 is vertically arranged in the telescopic sleeve 1 and is partially sleeved or wound on the guide rod 4, at least one cable 5 is provided in the spiral cable 3, and the cable 5 extends from both ends of the spiral cable 3 and is configured to be used for electrical connection of the lifting column; the spiral cable 3 and the guide rod 4 are configured so that when the telescopic sleeve 1 is extended, the spiral cable 3 is extended by the guide rod 4, and when the telescopic sleeve 1 is shortened, the spiral cable 3 is shortened by the guide rod 4.

[0053] A spiral cable 3 is provided on the outside of the cable 5, which protects the cable 5 to prevent the surface of the cable 5 from aging and direct damage due to lifting movements. At the same time, when there are multiple cables 5, the spiral cable 3 integrates the multiple cables 5 so that the multiple cables 5 will not be scattered in a disorderly manner in the column; therefore, it not only protects but also has the function of cable management, making the wiring of the entire table more concise.

[0054] In terms of noise, when the spiral cable 3 is arranged alone in the telescopic sleeve 1, the spiral cable 3 will shake due to its rapid shortening, so the spiral cable 3 will hit the telescopic sleeve 1 and generate noise; when a pipe is arranged outside the spiral cable 3, the pipe will also be hit. The spiral cable 3 in this solution is sleeved or wrapped around the guide rod 4, which can avoid the possibility of knocking with the external pipe. At the same time, the guide rod 4 can prevent or reduce the shaking of the spiral cable 3 when it is extended and retracted, and will not knock on the telescopic sleeve 1. It is a more reasonable structure.

[0055] The advantage of using the guide rod 4 is that it saves material and the friction surface between the guide rod 4 and the spiral cable 3 is smaller.

[0056] The difference between the spiral cable 3 being sleeved on the guide rod 4 and the spiral cable 3 being wound on the guide rod 4 is whether there is a gap between the spiral cable 3 and the guide rod 4. If there is a gap between the spiral cable 3 and the guide rod 4, it is sleeved; when the spiral cable 3 is sleeved on the guide rod 4, it is difficult to avoid slight shaking of the spiral cable 3, and when the spiral cable 3 is wound on the guide rod 4, the spiral cable 3 will be subjected to additional pressure from the guide rod 4 when it is stretched; while the spiral cable 3 is stretched, its inner diameter will also become smaller, and the spiral cable 3 will be wound on the guide rod 4, and will be wound tighter and tighter when stretched. Although the spiral cable 3 is elastic and will not cause a constraint that cannot move, the pressure and friction generated between the guide rod 4 and the spiral cable 3 will increase, which will affect the smoothness of the movement of the lifting column and the service life of the spiral cable 3. In this embodiment, there is a gap between the spiral cable 3 and the guide rod 4, and the spiral cable 3 is sleeved on the guide rod 4.

[0057] like Figure 5 , 6 As shown, the spiral cable 3 is an elastic spiral cable. When the telescopic sleeve 1 is extended, the spiral cable 3 is stretched and expanded. When the telescopic sleeve 1 is shortened, the spiral cable 3 is retracted 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 cooperating with the guide rod 4, the extension and retraction of the elastic spiral cable will be more stable.

[0058] Specifically, if Figure 1 , 7-9, the lifting column 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 actuator 2 includes a screw and a push rod shell. The push rod shell is provided with a nut connected to the screw thread. The screw and the upper end of the telescopic sleeve 1 move synchronously. The push rod shell is fixedly connected to the lower end of the telescopic sleeve 1. The upper end of the screw is exposed from the push rod shell and is transmission-connected with the motor 7. The motor 7 is configured to drive the screw to rotate and make the actuator 2 telescopic. An electrical component 8 is arranged below the actuator 2. The electrical component 8 includes a shell 81. A protective switch 82 and an external interface 83 electrically connected to the spiral 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 actuator 2 are connected by screws. The external interface 83 protrudes downward from the shell 81, and the spiral cable 3 is connected to the external interface 83 inside the shell 81. And the external interface 83 is exposed downward from the lower end surface of the telescopic sleeve 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 spiral 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.

[0059] Correspondingly, such as Figure 1 , 2 As shown in Figures 1 and 10, the lifting column also has a connection port 9 for electrically connecting the spiral cable 3 to the inside of the lifting table. Specifically, a junction box 10 is provided below the motor box 6. The spiral 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 lifting column, 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.

[0060] 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 lifting column, 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.

[0061] like Figure 7 , 10 As shown in Figures 11, the motor box 6 is provided with the wire fixing structure, which includes a body 12, which is horizontally arranged. The body 12 is provided with a first limiting groove 14, which is formed by the body 12 being recessed inwardly on a horizontal plane; the body 12 is provided with a limiting seat 15 extending vertically upward, and the limiting seat 15 is provided with a second limiting groove 16, which is formed by the limiting seat 15 being recessed from top to bottom on a vertical plane; the body 12 and the limiting seat 15 are perpendicular to each other. The first limiting groove 14 and the second limiting groove 16 are perpendicular to each other; the first limiting groove 14 is used to clamp the upper end ring 29 of the spiral cable 3, and the second limiting groove 16 is used to clamp the first straight segment 31 of the spiral cable 3; when the fixed line structure is connected to the spiral cable 3, the first straight segment 31 of the spiral cable 3 will be horizontal, and the parts from the upper end ring 29 downward will be vertical. Therefore, the first limiting groove 14 is on the horizontal plane to adapt to the clamping of the upper end ring 29, and the second limiting groove 26 is on the vertical plane to adapt to the clamping of the first straight segment 31, and the two-way clamping is conducive to firmly fixing the cable. In addition, the end of the main body 12 away from the limit seat 15 is the distal end 30, and the first limit groove 14 is opened on the main body 12 between the limit seat 15 and the distal end 30. Compared with the prior art in which the first limit groove 14 is opened at the distal end 30, it is more reasonable to set the upper end ring 29 to the first limit groove 14 and the first straight line segment 31 to the second limit groove 16, and the fixed line structure and the spiral cable 3 are also more convenient to install.

[0062] An avoidance hole 13 is provided at the bottom of the motor box 6, and the spiral cable 3 enters the motor box 6 from bottom to top through the avoidance hole 13. After the spiral cable 3 enters the motor box 6, its upper end ring is clamped in the first limiting groove 14, and the first straight line segment 31 is exposed upward from the main body 12; two limiting bosses 17 arranged at intervals are provided on the first straight line segment 31, and the first straight line segment 31 enters the second limiting groove 16 and makes the limiting seat 15 located between the two limiting bosses 17.

[0063] Furthermore, if Figure 18-22 As shown, the main body 12 is provided with an isolating portion 33 protruding in the direction of the spiral cable 3, and the isolating portion 33 is configured to surround or semi-surround the spiral cable 3; specifically, the isolating portion 33 protrudes downward into the avoidance hole 13, and the isolating portion 33 separates the motor box 6 from the spiral cable 3; the avoidance hole 13 of the motor box 6 is the circle of the sheet metal, which has the possibility of cutting the spiral cable 3, and the isolating portion 33 of the fixed line structure is between the circle and the spiral cable 3, separating the circle from the spiral cable 3, and the spiral cable 3 will not rub against the circle of the plate, thereby preventing the wear of the spiral cable 3 and extending the service life of the spiral cable 3; the isolating portion 33 is formed with a notch at the opening of the first limiting groove 14. In this embodiment, the isolating portion 33 semi-surrounds the spiral cable 3, and the notch formed on the isolating portion 33 is conducive to the spiral cable 3 from the first limiting groove 14 The opening enters the first limiting groove 14; further, a fixing plate 34 for mounting the motor 7 is provided in the motor box 6, and the fixing plate 34 is close to the side of the body 12; in the avoidance hole 13, the part of the motor box 6 and the spiral cable 3 that is not separated by the isolation part 33 is an exposed part 35, and the fixing plate 34 is configured to cover the exposed part 35; due to the gap on the isolation part 33, the isolation part 33 cannot completely protect the spiral cable, and the part that is not separated between the spiral cable and the motor box becomes the exposed part 35, and the fixing plate 34 for fixing the motor 7 is close to the side of the body 12 to cover the exposed part 35, that is, the fixing plate 34 forms a limit for the spiral cable 3, and the spiral cable 3 cannot cross the fixing plate 34 and contact the exposed part 35, thereby achieving comprehensive protection of the spiral cable 3. Moreover, the lower end of the isolation portion 33 slightly protrudes downward from the lower end surface of the motor box 6, so that when the spiral cable 3 shakes from bottom to top, the isolation portion 33 can still protect the cable from contacting the ring of the plate.

[0064] The main body 12 is provided with a plug-in portion 36 protruding downward, and the plug-in portion 36 is located at the center of the isolation portion 33. The plug-in portion 36 is provided with a plug-in hole 37 from bottom to top, and the guide rod 4 is inserted in the plug-in hole 37, and a vertical convex strip 38 is provided on the inner wall of the plug-in hole 37. The guide rod 4 is correspondingly provided with an anti-rotation groove 39. When the guide rod 4 is inserted into the plug-in hole 37, the convex strip 38 enters the anti-rotation groove 39; the fixed line structure is connected to the guide rod 4 by screws, and the convex strip 38 cooperates with the anti-rotation groove 39 to stably install the guide rod 4 and prevent the guide rod 4 from passively rotating and disconnecting from the fixed line structure.

[0065] Correspondingly, if Figure 3 , 4 , 12, 13, 16, and 17, the locking member 19 is arranged at the lower end of the actuator 2, and the spring cable 3 has a second straight segment 32 at the locking member, and two spaced limiting bosses 17 are arranged on the second straight segment 32; the locking member 19 includes a mounting portion 191 and a restraining portion 192, the mounting portion 191 and the restraining portion 192 are integrally formed, the mounting portion 191 includes two symmetrically arranged locking plates, the two locking plates are vertically arranged at the two ends of the restraining portion 192, the two locking plates can hold the two end faces of the actuator 2 and are connected by screws; the mounting portion 191 is configured to install and fix the locking member 19, the restraining portion 192 is provided with a limiting portion 18, the limiting portion 18 is clamped between the two limiting bosses 17, and the limiting portion 18 is configured to clamp the second straight segment 32 of the spiral cable 3; the restraining portion 192 is also provided with a The wire clamping window 20 and the wire clamping groove 21, the wire clamping groove 21 and the limiting portion 18 are respectively located on both sides of the wire clamping window 20, the wire clamping window 20 is configured to clamp the lower end ring 27 of the spiral cable 3, and the wire clamping groove 21 is configured to clamp the upward extending portion of the lower end ring 27 of the spiral cable 3; the constraint portion 191 is semi-enclosed and elastic, the limiting portion 18 is a C-shaped boss, the center angle of the limiting portion 18 is greater than 180°, the contour of the wire clamping groove 21 is an arc shape, and the center angle of the wire clamping groove 21 is greater than 180°, the center angles of the limiting portion 18 and the wire clamping groove 21 are both greater than 180°, which is beneficial to increase the contact between the constraint portion 192 and the spiral cable 3, and enhance the anti-detachment of the constraint portion 192 and the spiral cable 3. Therefore, the constraint portion 191 is elastic to facilitate the constraint portion 191 to be opened and the second straight segment 32 of the spiral cable 3 is clamped in.

[0066] Specifically, the wire clamping window 20 passes through the constraint portion 192 in the horizontal direction, the wire clamping groove 21 is recessed in the horizontal direction, and the opening of the wire clamping groove 21 faces the mounting portion 191; the constraint portion 192 above the wire clamping window 20 forms a pressure plate 28, and the wire clamping groove 21 is opened on the pressure plate 28, and the pressure plate 28 can restrict the lower end ring 27 of the spiral cable 3 to the wire clamping window 20 to prevent it from being disengaged; when the spiral cable 3 is in a naturally drooping state, its lower end ring 27 is roughly horizontal, and the horizontal wire clamping window 20 can be used to accommodate and clamp the lower end ring 27, and the portion of the spiral cable 3 extending upward from the lower end ring 27 will be clamped into the horizontal wire clamping groove 21, so as to further achieve the effect of locking and preventing the spiral cable 3 from falling off.

[0067] Furthermore, the wire clamping window 20 is trumpet-shaped, and the size of the wire clamping window 20 gradually decreases from the end far away from the mounting portion 191 to the end close to the mounting portion 191; further, the side wall of the wire clamping window 20 is S-shaped, and the shrinking trend of the wire clamping window 20 can achieve the effect of preventing the lower end ring 27 of the spiral cable 3 from falling off after being inserted into the wire clamping window 20, and the curve of the side wall of the wire clamping window 20 can also further enhance the effect of preventing the lower end ring 27 of the spiral cable 3 from falling off after being inserted.

[0068] In the present solution, only a single locking piece 19 is required to lock the end of the spiral cable, which has lower cost and is easier to assemble; the limiting portion 18 plays a major role in locking, and after the locking piece 19 is installed on the mounting portion 191, the limiting portion 18 will lock the second straight segment 32 of the spiral cable 3 to keep it stationary; and the wire clamping window 20 and the wire clamping groove 21 play an auxiliary locking role, which can further clamp the lower end ring 27 of the spiral cable 3 and the upper part thereof, so that the contact between the constraint portion 192 and the spiral cable 3 is increased, and the constraint portion 192 acts on the spiral cable 3 more, on the one hand preventing the second straight segment 32 of the spiral cable 3 from loosening, and on the other hand preventing the spiral cable 3 from aging due to concentrated force; the wire clamping window 20 and the wire clamping groove 21 are used to replace the spiral limiting structure, while achieving the same effect, facilitating mold opening and saving costs.

[0069] like Fig.14As shown, in the present embodiment, the length of the guide rod 4 is greater than half of the minimum length of the spiral cable 3; when the spiral cable 3 is shortened to the shortest, the lower end of the guide rod 4 is located below the middle of the spiral cable 3, and only a small part of the spiral cable 3 is not sleeved or wrapped around the guide rod 4; when the telescopic sleeve 1 is extended to the longest, only a small part of the spiral cable 3 is on the guide rod 4, but as the telescopic sleeve 1 and the spiral cable 3 are shortened, the swing margin of the spiral cable 3 becomes larger and larger, and the diameter of the spiral cable 3 also becomes larger and larger. While the possibility of knocking becomes greater, since more and more parts of the spiral cable 3 will be on the guide rod 4, correspondingly, the part of the spiral cable 3 that can shake becomes smaller and smaller, making it difficult for the spiral cable 3 to shake and knock the telescopic sleeve 1.

[0070] Specifically, if Figure 3 , 4 As shown in Figures 15, two enclosures 23 are further provided in the telescopic sleeve 1, and the two enclosures are arranged on the push rod shell at intervals. The enclosure 23 is sleeved on the outside of the spring cable 3, and the length of the enclosure 23 in the vertical direction is 4-8 cm. The inner wall of the enclosure 23 is provided with felt. In this embodiment, the length of the enclosure 23 is 5 cm; increasing the number of enclosures 23 can cover more ranges of the spring cables 3, thereby improving the guiding effect, increasing the stability of the elastic cable 3 in telescopic expansion and contraction, and preventing noise; in order to prevent the spring cable 3 from hitting the inner wall of the enclosure 23 and generating noise, felt is provided inside the enclosure 23 to increase buffering and reduce noise; the enclosure 23 is smaller, and compared with the whole tube, it consumes less materials and has lower cost, and can make up for the problem of insufficient guiding effect through quantity.

[0071] Furthermore, the enclosure 23 and the guide rod 4 are arranged to move relative to each other, and the enclosure 23 is configured to guide the extension and retraction of the spring cable 3 on the outside of the spring cable 3; when the telescopic sleeve 1 is extended, the enclosure 23 and the guide rod 4 are separated, and when the telescopic sleeve 1 is shortened, the enclosure 23 and the guide rod 4 are close to each other; specifically, the guide rod 4 is arranged at the upper end of the telescopic sleeve 1 and extends downward; the enclosure 23 is installed on the push rod shell, and the enclosure 23 is C-shaped, and the enclosure 23 includes two curved and symmetrical baffles 24, and the baffles 24 are connected with clamps 25, and the two clamps 25 are connected by screws and hold the push rod shell tightly; the two baffles 24 are attached to each other through the connection of the two clamps 25. The enclosure 23 guides the extension and contraction of the spring cable 3 on the outside of the spring cable 3. When the telescopic sleeve 3 is extended and contracted, the push rod shell and the lower end of the telescopic sleeve 1 remain stationary, and the screw rod drives the upper end of the telescopic sleeve 1 to move. Since the guiding effect of the guide rod 4 is weakened after the spring cable 3 is extended, the enclosure 23 can just make up for this problem and act on the part of the spring cable 3 that the guide rod 4 cannot act on, so that when the spring cable 3 is extended, the guide rod 4 and the enclosure 23 are respectively located at the two ends of the spring cable 3, achieving a better and more comprehensive guiding effect. The advantage of the enclosure 23 being C-shaped is that it is convenient to install the enclosure 23 and the spring cable 3, and it is also convenient to set the felt in the enclosure 23; the two baffles 24 are connected by two clamps 25 to form the enclosure 23, which further facilitates the installation of the enclosure 23 and the spring cable 3.

Claims

1. A wire fixing structure, characterized in that: It includes a main body, which is provided with a first limiting groove for clamping the end ring of the spiral cable; the main body is also provided with a limiting seat, which is provided with a second limiting groove for clamping the straight section of the spiral cable; the main body is provided with an isolation part protruding toward the direction of the spiral cable, and the isolation part is configured to surround or semi-surround the spiral cable.

2. The wire fixing structure according to claim 1, characterized in that: The end of the main body away from the limiting seat is the distal end, and the first limiting groove is arranged on the main body between the limiting seat and the distal end.

3. The wire fixing structure according to claim 1, characterized in that: The body and the limiting seat are perpendicular to each other, and the first limiting groove and the second limiting groove are perpendicular to each other.

4. The wire fixing structure according to claim 1, characterized in that: The main body is arranged horizontally, the limiting seat is arranged vertically, the first limiting groove is formed by the main body being recessed inwards on the horizontal plane; the second limiting groove is formed by the limiting seat being recessed from top to bottom on the vertical plane.

5. A lifting column, comprising a motor box, a spiral cable and a wire fixing structure as described in any one of claims 1 to 4, wherein the wire fixing structure is arranged in the motor box, and the spiral cable is arranged vertically; an avoidance hole for avoiding the spiral cable is opened on the motor box, and the upper end of the spiral cable passes through the avoidance hole from bottom to top and is arranged on the wire fixing structure, the spiral cable includes a straight section located at the upper end and an end ring located below the straight section, the end ring is clamped in the first limiting groove, and the straight section is clamped in the second limiting groove; the isolation portion protrudes downward into the avoidance hole, and the isolation portion separates the motor box from the spiral cable.

6. The lifting column according to claim 5, characterized in that: The isolating part is formed with a notch at the opening of the first limiting groove, and the isolating part half surrounds the spiral cable.

7. The lifting column according to claim 6, characterized in that: A fixing plate for installing the motor is provided in the motor box, and the fixing plate is close to the side of the main body; in the avoidance hole, the part of the motor box and the spiral cable not separated by the isolation part is an exposed part, and the fixing plate is configured to cover the exposed part.

8. The lifting column according to claim 5, characterized in that: The lifting column is also provided with a vertical guide rod, which is coaxially arranged in the spiral cable. The main body is provided with a plug-in portion protruding downward, and the plug-in portion is provided with a plug-in hole from bottom to top, and the guide rod is inserted in the plug-in hole.

9. The lifting column according to claim 8, characterized in that: A vertical convex strip is arranged on the inner wall of the plug-in hole, and an anti-rotation groove is arranged correspondingly on the guide rod. When the guide rod is inserted into the plug-in hole, the convex strip enters the anti-rotation groove.

10. The lifting column according to claim 5, characterized in that: The lower end of the isolation portion protrudes downward from the lower end surface of the motor box.

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