Table frame capable of improving space utilization rate of lifting table legs

Abstract

The utility model provides a table frame capable of improving the space utilization rate of lifting table legs. The table frame comprises two stand columns arranged in a left-right spaced mode and a middle beam located between the two stand columns. A lead screw assembly and a telescopic cable are arranged in the stand column, a motor is arranged outside the stand column, and an air switch used as a protection switch is arranged on the middle beam and electrically connected with the motor and the telescopic cable. The air switch is arranged on the middle beam instead of being arranged on the stand column, so that the stand column does not need to avoid the air switch when stretching out and drawing back, the maximum overlap ratio between two pipe fittings of the stand column is increased, and the installation stability of the table frame is improved. Under the condition of the same stand column length, the stand column in the table frame can have a larger stroke, cost is saved, the minimum ground clearance of the table top can be kept, and the table frame is suitable for people of multiple body types and multiple age groups.

Description

Technical Field

[0001] The utility model relates to the field of furniture, in particular to a table frame which improves the space utilization rate of lifting table legs. Background Art

[0002] The lifting column of the existing lifting table is provided with a switch on its side surface. The switch, as a protective part of the electrical appliance, plays a very important role in electrical safety and is related to the safety of the user. When the pipe fittings of the column are extended or retracted, they must avoid the switch. It is unrealistic to specially set an avoidance space on the pipe fittings, which is not advisable from the perspective of sealing or pipe strength. Therefore, the switch can only be set at the end of the column, so that the end where the switch is located and a part of the pipe fittings around it cannot overlap as the telescopic pipe fittings of the column, and the pipe fittings can only avoid the switch at the end at the expense of the stroke.

[0003] From the existing structural settings, under the same column length, the above-mentioned structure setting will shorten the column stroke. In order to ensure the stroke, the column length can only be forced to increase, which increases the cost. After increasing the column length, the minimum distance between the desktop and the ground will also increase, which cannot meet the requirements of being suitable for people of different body shapes and ages. Summary of the invention

[0004] In order to solve the above-mentioned technical problems, the utility model provides a table frame that improves the space utilization rate of the lifting table legs, including two columns arranged at intervals on the left and right and a middle beam located between the two columns; a screw assembly and a telescopic cable are provided in the column, a motor is provided outside the column, and an air switch used as a protective switch is arranged on the middle beam and is electrically connected to the motor and the telescopic cable; the air switch is no longer arranged on the column, but on the middle beam, which can make it unnecessary to avoid the air switch when the column is extended and retracted, increase the maximum overlap between the two pipe fittings of the column, and improve the installation stability of the table frame; under the same column length, the column in the table frame of this scheme can have a larger stroke, which not only saves cost but also maintains the minimum ground clearance of the desktop, so as to be suitable for people of various body shapes and ages.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A table frame for improving the space utilization rate of the legs of a lifting table, comprising two columns arranged at intervals on the left and right and a middle beam located between the two columns; a screw assembly and a telescopic cable are arranged in the column, the screw assembly and the telescopic cable are vertically arranged in the column, and the screw assembly and the telescopic cable are connected to the upper and lower ends of the column; a motor is arranged outside the column, and the motor is located at the upper end or the lower end of the column, and the motor is transmission-connected to the screw assembly; an air switch is arranged on the middle beam, and the air switch is configured as a switch that automatically disconnects when the current exceeds the rated current; the air switch is electrically connected to each motor and each telescopic cable.

[0007] A screw assembly and a telescopic cable are provided inside the column, a motor is provided outside the column, and an air switch used as a protective switch is arranged on the middle beam and is electrically connected to the motor and the telescopic cable; the air switch is no longer arranged on the column, but on the middle beam, which can make it unnecessary to avoid the air switch when the column is extended and retracted, increase the maximum overlap between the two pipes of the column, and improve the installation stability of the table frame; under the same column length, the column in the table frame of this scheme can have a larger stroke, which not only saves cost but also maintains the minimum ground clearance of the desktop, so as to be suitable for people of various body shapes and ages.

[0008] Preferably, a table foot is provided at the lower end of the column, and the motor is arranged in the table foot; the two ends of the middle beam are respectively connected to the two table feet; the table foot and the middle beam are hollow, and the table foot and the middle beam are connected. The air switch, the motor, and the telescopic cable are arranged in different areas, and the air switch needs to be electrically connected to them, and it is preferred not to expose the wiring, so the table foot and the middle beam are set to be hollow, on the one hand, to accommodate various components, and on the other hand, after the two are connected, the air switch, the motor, and the telescopic cable can be connected through wires.

[0009] Preferably, a junction box is provided in the middle beam, and the air switch is arranged in the junction box; a wire splitter is also provided in the junction box, and the wire splitter is configured to electrically connect the air switch with each motor and telescopic cable. The wire splitter is used to shunt the incoming power line so that each electrical appliance on the lifting table can be supplied with power, and each electrical appliance is electrically connected to the air switch. When a short circuit or other problems occur in each electrical appliance, the air switch can cut off the power supply in time, thereby ensuring the safety of the lifting table.

[0010] Preferably, a control box is further provided in the middle beam, and the control box is configured as a splitter electrically connected to the control box and then electrically connected to the motor through the control box. In the lifting table, the movement of the motor needs to be controlled by the control box.

[0011] Preferably, the air switch is arranged on a socket seat, and the socket seat is arranged in the junction box and exposed on the middle beam. The air switch and the socket seat are integrated components, and after direct installation, there is no need to consider the electrical connection between the air switch and the socket seat.

[0012] Preferably, the telescopic cable has power connectors at both ends, and the power connector at the lower end of the telescopic cable is exposed downward in the table leg. When the table leg and the middle beam are hollow and connected, the power connector of the telescopic cable is exposed in the table leg, which is conducive to connecting the power cord to the telescopic cable.

[0013] The design starting point, concept and beneficial effects of the utility model using the above technical solution are:

[0014] A screw assembly and a telescopic cable are provided inside the column, a motor is provided outside the column, and an air switch used as a protective switch is arranged on the middle beam and is electrically connected to the motor and the telescopic cable; the air switch is no longer arranged on the column, but on the middle beam, which can make it unnecessary to avoid the air switch when the column is extended and retracted, increase the maximum overlap between the two pipes of the column, and improve the installation stability of the table frame; under the same column length, the column in the table frame of this scheme can have a larger stroke, which not only saves cost but also maintains the minimum ground clearance of the desktop, so as to be suitable for people of various body shapes and ages. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The three-dimensional structure of the table frame in the embodiment of the utility model is shown in FIG. Figure 1 ;

[0016] Figure 2 The three-dimensional structure of the table frame in the embodiment of the utility model is shown in FIG. Figure 2 ;

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the junction box in the embodiment of the utility model;

[0018] Figure 4 It is a cross-sectional view of a column in an embodiment of the utility model;

[0019] Figure 5 It is a schematic diagram of the internal structure of the column in the embodiment of the utility model;

[0020] Figure 6 It is a schematic diagram of a three-dimensional structure of the connection between the fixing kit at the lower end of the telescopic cable and the end plate in the embodiment of the utility model;

[0021] Figure 7 This is an exploded view of the connection between the fixing kit at the upper end of the telescopic cable and the end plate in the embodiment of the utility model;

[0022] Figure 8 Schematic diagram of the three-dimensional structure of the connection between the fixing kit at the upper end of the telescopic cable and the end plate in the embodiment of the utility model Figure 1 ;

[0023] Fig. 9 Schematic diagram of the three-dimensional structure of the connection between the fixing kit at the upper end of the telescopic cable and the end plate in the embodiment of the utility model Figure 2 ;

[0024] Fig.10 It is a side view of the housing in the embodiment of the utility model;

[0025] Fig.11 It is a front view of the end socket in the embodiment of the utility model.

[0026] The reference numerals of the figures are as follows: column 1; middle beam 2; screw assembly 3; telescopic cable 4; motor 5; air switch 6; table leg 7; wiring window 8; junction box 9; control box 10; distributor 11; socket seat 12; power connector 13; telescopic sleeve 14; outer tube 141; inner tube 142; end socket 15; head 151; main body 152; locking portion 153; convex ring 154; fixing kit 16; shell 17; connecting column 18; connecting groove 19; accommodating groove 20; limiting portion 21; locking groove 22; end plate 23; fixing plate 24; convex portion 25; slot 26; limiting strip 27; avoidance opening 28. DETAILED DESCRIPTION

[0027] 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.

[0028] 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.

[0029] 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.

[0030] The specific implementation of the utility model is as follows:

[0031] like Figure 1-3 As shown, the utility model provides a table frame for improving the space utilization rate of the legs of a lifting table, including two columns 1 arranged at intervals on the left and right and a middle beam 2 located between the two columns 1; a screw assembly 3 and a telescopic cable 4 are provided in the column 1, the screw assembly 3 and the telescopic cable 4 are vertically arranged in the column 1, and the screw assembly 3 and the telescopic cable 4 are connected to the upper and lower ends of the column 1; a motor 5 is provided outside the column 1, and the motor 5 is located at the upper end or the lower end of the column 1, and the motor 5 is transmission-connected to the screw assembly 3; an air switch 6 is provided on the middle beam 2, and the air switch 6 is configured as a switch that automatically disconnects when the current exceeds the rated current; the air switch 6 is electrically connected to each motor 5 and each telescopic cable 4.

[0032] A screw assembly 3 and a telescopic cable 4 are provided inside the column 1, a motor 5 is provided outside the column 1, and an air switch 6 used as a protective switch is arranged on the middle beam 2 and is electrically connected to the motor 5 and the telescopic cable 4; the air switch 6 is no longer arranged on the column 1, but on the middle beam 2, which can make it unnecessary to avoid the air switch 6 when the column 1 is extended and retracted, increase the maximum overlap between the two pipes of the column 1, and improve the installation stability of the table frame; under the same length of the column 1, the column 1 in the table frame of this scheme can have a larger stroke, which not only saves cost but also maintains the minimum ground clearance of the desktop, so as to be suitable for people of various body shapes and ages.

[0033] Specifically, a table leg 7 is provided at the lower end of the column 1, and the two ends of the middle beam 2 are respectively connected to the two table legs 7, and the table legs 7 and the middle beam 2 are open downward, so the table legs 7 and the middle beam 2 are hollow, and a wiring window 8 is opened on the table leg 7 to connect the table leg 7 with the middle beam 2; the motor 5 is arranged in the table leg 7, and a junction box 9 and a control box 10 are provided in the middle beam 2. The junction box 9 is provided with a junction box 11 and a socket 12 with the air switch 6, and the junction box 11 is configured to connect the air switch 6 with each motor 5 and the telescopic cable 4 is electrically connected, the control box 10 is configured as a splitter 11 electrically connected to the control box 10 and then electrically connected to the motor 5 through the control box 10; the socket seat 12 is arranged in the splitter box 9 and exposed on the middle beam 2, the external power line is connected to the lifting table through the socket seat 12, the socket seat 12 is first electrically connected to the splitter 11, the air switch 6 is also electrically connected to the splitter 11, the splitter 11 is then electrically connected to the control box 10 and the telescopic cable 4, the control box 10 is then electrically connected to the two motors 5, when the lifting table is raised or lowered, the movement of the motor 5 needs to be controlled by the control box 10.

[0034] The air switch 6, the motor 5 and the telescopic cable 4 are arranged in different areas, and the air switch 6 needs to be electrically connected to them, and it would be preferred not to expose the wiring, so the table legs 7 and the middle beam 2 are set to be hollow, which can accommodate various components on the one hand, and on the other hand, after the two are connected, the air switch 6 can be connected to the motor 5 and the telescopic cable 4 through wires; the splitter 11 is used to divert the incoming power cord so that each electrical appliance on the lifting table can be powered, and each electrical appliance is electrically connected to the air switch 6. When a short circuit or other problems occur in each electrical appliance, the air switch 6 can cut off the power supply in time, thereby ensuring the safety of the lifting table; the air switch 6 and the socket seat 12 are integrated components. After direct installation, there is no need to consider the electrical connection between the air switch 6 and the socket seat 12.

[0035] Furthermore, the telescopic cable 4 has power connectors 13 at both ends. The power connector 13 at the lower end of the telescopic cable 4 is exposed downward in the table leg 7. When the table leg 7 and the middle beam 2 are hollow and connected, the power connector 13 of the telescopic cable 4 is exposed in the table leg 7, which is conducive to the electrical connection between the telescopic cable 4 and the splitter 11.

[0036] Furthermore, if Figure 4 , 5 As shown, the column 1 includes a telescopic sleeve 14, which includes an outer tube 141 and an inner tube 142. The outer tube 141 is sleeved on the outer side of the inner tube 142 and the two are slidably matched. The lower end of the inner tube 142 is connected to the table leg 7; both ends of the telescopic cable 4 are provided with end sockets 15, and the end sockets 15 have a power connector 13. The two power connectors 13 are respectively exposed at the upper and lower ends of the telescopic sleeve 14. The power connector 13 located at the lower end is exposed in the table leg 7 as described above, and the power connector 13 is configured as an external cable to achieve electrical connection of the telescopic cable 4; the two end sockets 15 are sleeved with a fixing kit 16, and the end sockets 15 and the fixing kit 16 are relatively fixedly arranged. The two fixing kits 16 are respectively installed at the upper and lower ends of the telescopic sleeve 14, and the fixing kit 16, the end socket 15 and the telescopic cable 4 are all vertically arranged; when the telescopic sleeve 14 is extended, the telescopic cable 4 is extended accordingly, and when the telescopic sleeve 14 is shortened, the telescopic cable 4 recovers its deformation and shortens.

[0037] The end socket 15 and the telescopic sleeve 14 are connected by installing a fixing kit 16, which has a simple structure and is easy to install; the end socket 15 can use existing compliant and safe existing products, and the manufacturer does not need to injection-mold a new end socket 15 by itself, and there is no need to consider the certification and safety issues of the end socket 15; from the overall layout, the telescopic cable 4 has no bends at its ends, which can reduce waste and allow a shorter telescopic cable 4 to be selected. Secondly, the telescopic cable 4 without a bend at the end is not easily damaged due to uneven force, is more protective, and can extend the service life of the telescopic cable 4.

[0038] Specifically, if Figure 7 , 10 As shown in , 11, the fixing kit 16 is sleeved on the end socket 15 in the same manner, and the fixing kit 16 includes two shells 17, and the two shells 17 are sleeved on the outside of the end socket 15 by horizontal buckling; two connecting columns 18 spaced up and down are provided on the end surface of the shell 17, and a connecting groove 19 symmetrical to the connecting columns 18 is provided on the end surface, and the two shells 17 are positioned and buckled with the connecting groove 19 by the connecting columns 18 and fixedly connected by screws; the fixing kit 16 is split into two shells 17, and the two shells 17 directly wrap the end socket 15 by buckling, without the need to perform steps such as winding the telescopic cable 4, etc., and the installation is convenient, simple and fast, which is conducive to improving production efficiency; the connecting column 18 of one shell 17 is inserted into the connecting groove 19 of the other shell 17 to achieve the buckling of the two, so that the positioning during installation is simple and quick.

[0039] The end socket 15 includes a head 151 with a power connector 13 and a main body 152 connected to the head 151. The head 151 protrudes from the main body 152 in the radial direction. The housing 17 is provided with a receiving groove 20, and the head 151 is arranged in the receiving groove 20. The fixing sets 16 at the upper and lower ends of the receiving groove 20 are provided with limiting parts 21. The limiting parts 21 protrude inwardly in the radial direction. The two limiting parts 21 are jointly configured to limit the movement of the head 151 in the receiving groove 20 from the upper and lower directions. A locking part 153 is provided at the end of the main body 152 away from the head 151. The locking part 153 is in an I-shape. The upper and lower ends of the locking part 153 have convex rings 154, and the convex rings 154 protrude outwardly in the radial direction. The main body 152 is provided with a locking groove 22 for accommodating and engaging the locking portion 153, and the locking groove 22 is I-shaped corresponding to the locking portion 153; the head 151 of the end socket 15 is arranged in the accommodating groove 20 to axially limit the end socket 15 and the fixing kit 16, and when the telescopic sleeve 14 is extended or retracted, the fixing kit 16 can drive the end socket 15 to move with the telescopic sleeve 14, thereby achieving the lengthening or shortening of the telescopic cable 4; through the arrangement of the locking portion 153 and the locking groove 22, the end socket 15 and the fixing kit 16 are further locked, so as to increase the connection stability between the end socket 15 and the fixing kit 16, and to enhance the tension that the telescopic cable 4 can withstand when the telescopic sleeve 14 is extended or retracted.

[0040] The upper and lower fixing kits 16 can be connected to the telescopic sleeve 14 by the same connection method or by two different connection methods. In this embodiment, the upper fixing kit 16 and the lower fixing kit 16 are connected to the two ends of the telescopic sleeve 14 respectively by two connection methods.

[0041] Specifically, if Figure 6-11 As shown, the telescopic sleeve 14 has end plates 23 located at the upper and lower ends, the two end plates 23 are respectively located on the outer tube 141 and the inner tube 142, and the fixing kit 16 is installed on the end plates 23; the fixing kit 16 located at the bottom is directly fixedly connected to the end plate 23 located at the bottom by screws, which is a relatively simple connection method.

[0042] The screw assembly 3 is located beside the telescopic cable 4, and the screw assembly 3 is installed on a fixing plate 24, and the fixing plate 24 is connected to the end plate 23 at the upper end of the telescopic sleeve 14; the fixing kit 16 located at the top is provided with a convex portion 25 protruding outward at its end close to the power connector 13, and a slot 26 is provided on the fixing plate 24, and the fixing kit 16 is clamped in the slot 26 and the convex portion 25 is in contact with the fixing plate 24; a plurality of limit strips 27 are provided on the fixing kit 16, and the spacing between the limit strip 27 and the convex portion 25 is equal to the thickness of the fixing plate 24. When the fixing kit 16 enters the slot 26, the fixing plate 24 is clamped between the limit strip 27 and the convex portion 25; first connect the screw assembly 3 to the fixing plate 2 4, and then the fixing kit 16 sleeved on the end socket 15 is clamped on the fixing plate 24, and finally the fixing plate 24 and the end plate 23 are connected by screws. The fixing plate 24 is provided with an escape opening 28 for avoiding the fixing kit 16, so that the power connector 13 is exposed to the telescopic sleeve 14; the fixing plate 24 is clamped with the fixing kit 16, and the installation operation is faster and more convenient; the fixing plate 24 is further clamped with the fixing plate 24 through the gap between the limiting strip 27 and the protrusion 25, and the axial synchronization between the fixing plate 24 and the fixing kit 16 is realized in turn. The fixing plate 24 is also installed on the end plate 23 of the telescopic sleeve 14, so this also realizes the axial synchronization between the fixing kit 16 and the end plate 23.

Claims

1. A table frame for improving the space utilization of lifting table legs, characterized by: It includes two columns spaced apart on the left and right and a middle beam between the two columns; a screw assembly and a telescopic cable are arranged inside the column, the screw assembly and the telescopic cable are vertically arranged inside the column, and the screw assembly and the telescopic cable are connected to the upper and lower ends of the column; a motor is arranged outside the column, and the motor is located at the upper end or the lower end of the column, and the motor is transmission-connected to the screw assembly; an air switch is arranged on the middle beam, and the air switch is configured to automatically disconnect when the current exceeds the rated current; the air switch is electrically connected to each motor and each telescopic cable.

2. The table frame for improving the space utilization of the lifting table legs according to claim 1, characterized in that: The lower end of the column is provided with a table foot, and the motor is arranged in the table foot; the two ends of the middle beam are respectively connected with the two table feet; the table foot and the middle beam are hollow, and the table foot and the middle beam are connected.

3. The table frame for improving the space utilization of the lifting table legs according to claim 2, characterized in that: A junction box is arranged in the middle beam, and the air switch is arranged in the junction box; a junction box is also provided with a junction distributor, and the junction distributor is configured to electrically connect the air switch with each motor and the telescopic cable.

4. The table frame for improving the space utilization of the lifting table legs according to claim 3, characterized in that: A control box is also provided in the middle beam. The control box is configured as a splitter electrically connected to the control box and then electrically connected to the motor through the control box.

5. The table frame for improving the space utilization of the lifting table legs according to claim 3, characterized in that: The air switch is arranged on a socket seat, and the socket seat is arranged in the junction box and exposed on the middle beam.

6. The table frame for improving the space utilization of the lifting table legs according to claim 2, characterized in that: The telescopic cable has power connectors at both ends, and the power connector at the lower end of the telescopic cable is exposed downwards in the table leg.

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