Lifting table

Abstract

The utility model discloses a lifting table, which comprises a table plate, the lifting stand column is used for driving the table board to lift; the controller is used for controlling the lifting stand column; a coaxial line is also included; the coaxial line is at least arranged along the local edge of the table board; the controller controls the lifting stand column to act according to detection signals of the coaxial line. When a hand touches or is close to the coaxial line on the edge of the table board, the capacitance value of the coaxial line changes, the signal processor electrically connected with the coaxial line judges whether the hand touches the coaxial line or not according to the change of the capacitance value, and the controller controls the lifting stand column to stop lifting or retreat when encountering resistance, so that the function of preventing the hand from being pinched is achieved. And the use safety of the lifting table is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lifting table, especially to a lifting table. BACKGROUND

[0002] The automatic lifting table is generally powered by electricity, and the height of the lifting table is adjusted by a motor-controlled mechanical device. Since the lifting table does not have an emergency stop function, if an accident such as hand clamping occurs during lifting, the lifting table will continue to rise or fall until it reaches the target height, which may cause human injury and even damage the lifting mechanism. SUMMARY

[0003] In order to overcome the deficiencies in the prior art, the utility model provides a lifting table with the advantages of preventing hand clamping.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A lifting table comprises:

[0006] a table plate;

[0007] a lifting column for driving the table plate to lift;

[0008] a controller for controlling the lifting column;

[0009] and a coaxial line; the coaxial line is arranged along at least a partial edge of the table plate; the controller controls the lifting column according to a detection signal of the coaxial line.

[0010] By adopting the above-mentioned technical scheme, the skin of human tissue is an electrolyte, which is equivalent to a conductive electrode; in the case that a conductor and a human body are separated by a layer of dielectric (air), most of the energy in the system is concentrated on the surface layer of the conductor, and when a finger approaches / touches the conductor, it is equivalent to being placed in an energy overflow area, which will increase the conductive surface area of the capacitor system, thereby causing a change in capacitance; according to the above principle, when a hand contacts or approaches the coaxial line at the edge of the table plate, the capacitance of the coaxial line will change, so that the controller controls the lifting column to stop lifting or retreat when encountering resistance, thereby preventing hand clamping and improving the use safety of the lifting table.

[0011] Optionally, the coaxial line is embedded in the edge side wall of the table plate.

[0012] By adopting the above-mentioned technical scheme, a groove for embedding the coaxial line is formed in the edge side wall of the table plate, which is convenient to process; at the same time, since the coaxial line is in an embedded state, the coaxial line is not easy to be damaged.

[0013] Optionally, an edge sealing strip is connected to the edge side wall of the table plate; the edge sealing strip covers the coaxial line.

[0014] By adopting the technical scheme, the edge strip shields the coaxial line, which can protect the coaxial line to some extent and improve the overall aesthetic appearance of the table board.

[0015] Optionally, the coaxial line is embedded in the bottom edge of the table board.

[0016] By adopting the technical scheme, since the coaxial line is located on the bottom surface of the table board, the coaxial line is not easily damaged by collision, and the bottom surface of the table board is not visible during normal use, so the aesthetic appearance is better.

[0017] Optionally, a decorative strip is connected to the bottom surface of the table board; and the decorative strip shields the coaxial line.

[0018] By adopting the technical scheme, the decorative strip shields the coaxial line, which can protect the coaxial line to some extent and improve the overall aesthetic appearance of the table board.

[0019] Optionally, the coaxial line is pasted on the edge of the table board.

[0020] By adopting the technical scheme, the coaxial line is connected to the edge of the table board by pasting, so that the table board does not need to be processed with a groove, which reduces the processing cost, and the installation is more convenient and stable.

[0021] Optionally, the edge of the table board is circumferentially provided with coaxial lines to form a ring-shaped closed detection area.

[0022] By adopting the technical scheme, since the edge of the table board is circumferentially provided with coaxial lines, the detection range is large and the safety is better.

[0023] Optionally, one coaxial line is arranged on each of the four edges of the table board.

[0024] By adopting the technical scheme, the length of the coaxial line is shortened, the working effectiveness of the coaxial line is ensured, and the realization of the anti-pinch function is facilitated.

[0025] Optionally, an L-shaped coaxial line is arranged at each of the four corners of the table board.

[0026] By adopting the technical scheme, the length of the coaxial line is shortened, the working effectiveness of the coaxial line is ensured, and the realization of the anti-pinch function is facilitated.

[0027] Optionally, the edge of the table board includes a detection area where the coaxial line is arranged and a non-detection area where the coaxial line is not arranged; and the non-detection area is located on the side of the table board away from the user.

[0028] By adopting the technical scheme, the side of the desktop far from the user has low frequency of use and is not prone to hand clamping, so the coaxial line is not arranged at the side, the use of the coaxial line is reduced on the basis of ensuring the realization of the hand clamping function, and the production cost is reduced.

[0029] Optionally, the desktop plate comprises a first side close to the user and a second side far from the first side, and the edge of the first side is provided with the coaxial line, and the third side and the fourth side adjacent to the first side are both provided with the coaxial line.

[0030] By adopting the technical scheme, the length of the coaxial line is shortened, the working effectiveness of the coaxial line is ensured, and the realization of the hand clamping function is facilitated.

[0031] Optionally, two corners of the desktop plate are each provided with an L-shaped coaxial line, and part of the coaxial line is located on the first side, and the remaining part is located on the third side or the fourth side.

[0032] By adopting the technical scheme, the length of the coaxial line is shortened, the working effectiveness of the coaxial line is ensured, and the realization of the hand clamping function is facilitated.

[0033] Optionally, the detection area is located on the side of the desktop close to the user.

[0034] By adopting the technical scheme, when the desktop plate is used, the edge of the side of the desktop plate close to the user has the highest frequency of use, hand clamping is most prone to occur at the edge, so the edge is set as the detection area, the safety of most users in use is ensured, and the use of the coaxial line is reduced, thereby reducing the production cost.

[0035] Optionally, the desktop plate close to the side close to the user is provided with one or two coaxial lines.

[0036] By adopting the technical scheme, the length of the coaxial line is shortened, the working effectiveness of the coaxial line is ensured, and the realization of the hand clamping function is facilitated.

[0037] Optionally, the horizontal straight line distance from the axis of the coaxial line to the side of the desktop plate is less than or equal to 10 cm.

[0038] By adopting the technical scheme, the detection range of the coaxial line itself is a cylindrical range with the axis as the center, and the horizontal straight line distance from the axis of the coaxial line to the side of the desktop plate is less than or equal to 10 cm, so that the desktop plate edges provided with the coaxial line all have the hand clamping function.

[0039] Optionally, the signal processing unit is further arranged, and the signal processing unit receives the detection signal of the coaxial line and transmits the detection signal to the controller.

[0040] By adopting the technical scheme, the signal processing unit converts the capacitance change of the coaxial line into an electrical signal and then transmits the electrical signal to the controller.

[0041] Optionally, the signal processing unit is arranged in a separately installed signal processor, and the signal processor is installed on the table board.

[0042] By adopting the technical scheme, the length of the coaxial line connected to the controller is reduced, thereby ensuring the working effectiveness of the coaxial line and facilitating the realization of the hand clamping prevention function.

[0043] Optionally, the signal processing unit is integrated in the controller.

[0044] By adopting the technical scheme, the connection operation between the signal processing unit and the controller is reduced, and signal interference is reduced.

[0045] Optionally, the hand controller is further included; the signal processing unit is integrated in the hand controller; and the hand controller transmits operation instructions and detection signals to the controller in a wireless communication mode or a wired mode.

[0046] By adopting the technical scheme, the electric wire required for connecting the signal processor is reduced, and the coaxial line does not need to be excessively bent for connecting the controller or the signal processor or avoiding the hand controller, thereby reducing the use of the coaxial line. BRIEF DESCRIPTION OF DRAWINGS

[0047] Figure 1 is a structural schematic view of an embodiment one of the utility model.

[0048] Figure 2 is a structural schematic view of an embodiment one of the utility model.

[0049] Figure 3 is a structural schematic view of a partial section of a table board of an embodiment one of the utility model.

[0050] Figure 4 is a structural schematic view of a partial section of a table board of an embodiment one of the utility model.

[0051] Figure 5 is a structural schematic view of an embodiment two of the utility model.

[0052] Figure 6 is a structural schematic view of an embodiment three of the utility model.

[0053] Figure 7 is a structural schematic view of a partial section of a table board of an embodiment three of the utility model.

[0054] Figure 8 is a structural schematic view of an embodiment four of the utility model.

[0055] Figure 9is the structural schematic diagram of one mode of the coaxial line circumferential distribution of the embodiment five of the utility model.

[0056] Figure 10 is the structural schematic diagram of another mode of the coaxial line circumferential distribution of the utility model.

[0057] Figure 11 is the structural schematic diagram of another mode of the coaxial line circumferential distribution of the utility model.

[0058] Figure 12 is the structural schematic diagram of one mode of the coaxial line distribution in the front side and both sides of desktop of the utility model.

[0059] Figure 13 is the structural schematic diagram of one mode of the coaxial line distribution in the front side and both sides of desktop of the utility model.

[0060] Figure 14 is the structural schematic diagram of one mode of the coaxial line distribution in the front side and both sides of desktop of the utility model.

[0061] Figure 15 is the structural schematic diagram of one mode of the coaxial line distribution in the front side and both sides of desktop of the utility model.

[0062] Figure 16 is the structural schematic diagram of the coaxial line distribution in the front side of desktop of the utility model.

[0063] Figure 17 is the control schematic diagram in the lifting process of the utility model.

[0064] Figure 18 is the control schematic diagram when starting lifting of the utility model.

[0065] Figure 19 is the control schematic diagram of the utility model.

[0066] Explanation of reference signs:

[0067] 10, table board;100, first embedded slot;101, second embedded slot;102, sunken groove;

[0068] 20, lifting column;

[0069] 30, hand controller;

[0070] 40, signal processor;

[0071] 50, controller;

[0072] 60, edge strip;

[0073] 70, coaxial line;

[0074] 80, decorative strip. DETAILED DESCRIPTION

[0075] The utility model is further described in detail below. Figures 1-19 The utility model is further described in detail below.

[0076] Embodiment one: disclose a lifting table, reference Figures 1-4 , including table board 10, a pair of lifting column 20, hand controller 30, controller 50, coaxial line 70 and signal processing unit;Table board 10 is fixed at the top of a pair of lifting column 20, and a pair of lifting column 20 drives table board 10 to lift in the lifting process;Controller 50 is used to control a pair of lifting column 20 to lift, stop or back off;Wherein the lifting column 20 can be electric push rod.In other embodiments, table board 10 can also be supported by a lifting column 20 and a retractable support foot.Hand controller 30 is wirelessly communicated with controller 50 or wired electrically connected;When working normally, reference Figure 19 , user gives controller 50 instruction by hand controller 30 to control table board 10 to lift or stop;Signal processing unit is arranged in the signal processor 40 of independent installation;Coaxial line 70 and signal processor 40 are installed on table board 10, and the installation position of coaxial line 70 is the edge (the range of 10cm that the tabletop side faces inwards is recessed) of table board 10, that is, the horizontal straight line distance of coaxial line 70 axis to the side of table board 10 ≤10cm;Signal processor 40 is electrically connected with coaxial line 70 and controller 50 respectively;When the finger approaches / touches the edge of table board 10, reference Figure 19 , signal processor 40 will detect the capacitance change of coaxial line 70, then give controller 50 corresponding electric signal, and controller 50 controls a pair of lifting column 20 to stop or back off.

[0077] Coaxial line 70 is composed of conductor, insulating layer, shielding layer and outer covering arranged in order from inside to outside;Wherein the material of conductor is bare copper, the insulating layer is made of LDPE material, the shielding layer is woven by bare copper, and the outer covering is made of PVC material;The induction range of coaxial line 70 is the region with conductor as center and radius of 10cm;The working principle of coaxial line 70 is as follows: the skin of human tissue is an electrolyte, which is equivalent to a conductive electrode;In the conductor and human body across a layer of dielectric (air), most of the energy in the system is gathered in the surface layer of the conductor, when the finger approaches / touches the conductor, it is equivalent to being placed in the energy overflow area, and the conductive surface area of the capacitor system will be increased, thereby causing the change of capacitance.

[0078] Reference Figures 2-4The edge side wall of the table plate 10 is provided with a first embedding groove 100 in the form of a ring and distributed along the circumference of the table plate 10; the coaxial line 70 is embedded into the first embedding groove 100 and distributed along the first embedding groove 100 to form a ring-shaped closed detection area; one end of the coaxial line 70 is provided with a connector and connected with the signal processor 40 through the connector; in this way, the range of the anti-pinch detection is maximized and the safety is better.

[0079] In order to protect the coaxial line 70, refer to Figures 2-4 The edge side wall of the table plate 10 is connected with an edge sealing strip 60; the edge sealing strip 60 shields the coaxial line 70; at the same time, the edge sealing strip 60 also improves the aesthetic appearance of the table plate 10. In addition, the edge sealing strip 60 can be detachably connected with the table plate 10 in a clamping manner, so that the disassembly and assembly are facilitated, thereby facilitating subsequent maintenance.

[0080] Working principle of the first embodiment:

[0081] Refer to Figure 13 When a pair of lifting columns 20 drives the table plate 10 to lift, if a finger approaches / touches the edge of the table plate 10, the signal processor 40 will detect the change of the capacitance of the coaxial line 70, and then give the corresponding electric signal to the controller 50, the controller 50 controls a pair of lifting columns 20 to make a retreat action, thereby driving the table plate 10 to retreat, thereby avoiding pinching the hand; refer to Figure 14 When a pair of lifting columns 20 starts to drive the table plate 10 to lift, if a finger approaches / touches the edge of the table plate 10, the signal processor 40 will detect the change of the capacitance of the coaxial line 70, and then give the corresponding electric signal to the controller 50, the controller 50 controls a pair of lifting columns 20 to make a stop action, thereby the table plate 10 does not lift, thereby avoiding pinching the hand.

[0082] The second embodiment is different from the first embodiment in that: refer to Figure 5 The bottom surface of the table plate 10 is formed with a sunken groove 102 for installing the signal processor 40; the signal processor 40 is fixed in the sunken groove 102 through screws, so that the hidden mode reduces the possibility of being collided and damaged. In addition, the signal processor 40 is located on the side of one of the lifting columns 20 away from the other lifting column 20, so that it is away from the user between a pair of lifting columns 20, further reducing the possibility of being collided.

[0083] The third embodiment is different from the first embodiment in that: refer to Figure 6 and Figure 7, the coaxial cable 70 is not installed on the edge side wall of the table board 10, but is installed at the bottom edge of the table board 10; a second embedding groove 101 in the shape of a ring is formed at the bottom edge of the table board 10; the coaxial cable 70 is embedded into the second embedding groove 101; thus the coaxial cable 70 is less likely to be collided relative to the edge side wall of the table board 10. In order to protect the coaxial cable 70, a decorative strip 80 is connected to the bottom of the table board 10; the decorative strip 80 covers the coaxial cable 70. In addition, the decorative strip 80 can be detachably connected to the table board 10 by clamping, so as to facilitate disassembly and subsequent maintenance.

[0084] Embodiment Four: The difference between Embodiment Four and Embodiment Three is that: Figure 8 , a sunken groove 102 for installing the signal processor 40 is formed on the bottom of the table board 10; the signal processor 40 is fixed in the sunken groove 102 by screws, so that the signal processor 40 is less likely to be collided and damaged in a hidden manner. In addition, the signal processor 40 is located on the side of one of the lifting columns 20 away from the other lifting column 20, so as to further reduce the possibility of the signal processor 40 being collided by the user located between the pair of lifting columns 20.

[0085] Embodiment Five: In order to reduce the processing cost of the table board 10, referring to Figure 9 , the coaxial cable 70 can be directly pasted on the edge of the table board 10, so that the slotting process of the embedding groove for embedding the coaxial cable 70 can be omitted.

[0086] In order to shorten the length of use of the coaxial cable 70, so as to ensure the working effectiveness of the coaxial cable 70, a plurality of coaxial cables 70 with a length less than 1.8m can be used. One of the ways is to refer to Figure 10 , four L-shaped coaxial cables 70 with the same length are used, and the number of signal processors 40 is two; the four L-shaped coaxial cables 70 are located at the four corners of the table board 10, and the heads and tails are not connected but form a rectangular detection area; a pair of signal processors 40 and a controller 50 are located in the middle of the bottom of the table board 10, and the pair of signal processors 40 and the controller 50 are located on the same straight line and the controller 50 is located between the pair of signal processors 40, and the ends of the left pair of coaxial cables 70 close to each other are bent and connected to the corresponding side signal processor 40. Another way is to refer to Figure 11, the difference between which and the above-mentioned mode is that four straight coaxial lines 70 are used, and the number of signal processors 40 is two; the four straight coaxial lines 70 are located at the four edges of the table board 10, and the head and tail are not connected but form a rectangular detection area; a pair of signal processors 40 are respectively located at the two opposite corners of the bottom surface of the table board 10, and the ends of the pair of coaxial lines 70 close to each other are bent and connected with the corresponding side signal processor 40. These two wiring modes are suitable for the case that the coaxial lines 70 are embedded in the edge side wall and the bottom edge of the table board 10, and pasted on the edge of the table board 10.

[0087] For the convenience of subsequent elaboration, the side of the table board 10 close to the user is referred to as the first side, the side away from the user is referred to as the second side, and the left and right sides are respectively referred to as the third side and the fourth side; considering the second side of the table board 10, the user rarely approaches, the probability of hand clamping is relatively low, and this place is a non-detection area, referring to Figure 12 , the coaxial lines 70 are only arranged at the first side, the third side and the fourth side of the table board 10, and the three places are detection areas; two equal-length L-shaped coaxial lines 70 are used, the number of signal processors 40 is one, and the signal processor 40 is located close to the middle of the first side of the table board 10; a pair of coaxial lines 70 are respectively located at the corners of the first side of the table board 10 turning to the third side and the fourth side, and the ends of the pair of coaxial lines 70 close to each other are bent and connected with the signal processor 40, and the remaining parts are respectively located at the third side and the fourth side of the table board 10. In this way, the normal use scenario can be met, and the coaxial lines 70 can be shortened; of course, in the actual use process, the position of the signal processor 40 can be changed, so that the lengths of the two L-shaped coaxial lines 70 can be inconsistent. This wiring mode is suitable for the case that the coaxial lines 70 are embedded in the edge side wall and the bottom edge of the table board 10, and pasted on the edge of the table board 10.

[0088] From the perspective of shortening the coaxial lines 70, while ensuring the basic use scenario, the coaxial lines 70 can also be arranged only at the edge of the first side of the table board 10, at this time only the first side of the table board 10 is a detection area, and the remaining three sides are non-detection areas; for details, refer to Figure 16 , two equal-length straight coaxial lines 70 are used, the number of signal processors 40 is one, and the ends of the pair of coaxial lines 70 close to each other are bent and connected with the signal processor 40. Of course, only one straight coaxial line 70 can be arranged at the first side of the table board 10, and the length of the coaxial line 70 is close to the length of the first side of the table board 10. This wiring mode is suitable for the case that the coaxial lines 70 are embedded in the edge side wall and the bottom edge of the table board 10, and pasted on the edge of the table board 10.

[0089] In the above embodiments, the signal processing unit is arranged in the form of a separate element of the signal processor 40, and the signal processor 40 is connected with the controller 50 through an electric wire, so that the electric wire connection operation also needs to be performed during assembly; therefore, reference can be made toFigure 13 The signal processing unit is integrated in the controller 50, and one end of the coaxial line 70 is directly connected to the controller 50; or Figure 14 and Figure 15 The signal processing unit is integrated in the controller 50, and one end of the coaxial line 70 is directly connected to the controller 50; or

[0090] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A lifting table, comprising: a table board; a lifting column for driving the table board to lift; a controller for controlling the lifting column; characterized in that it further comprises coaxial lines; the coaxial lines are arranged along at least a part of the edge of the table board; the controller controls the lifting column according to the detection signal of the coaxial lines.

2. A sit-stand desk according to claim 1, characterized in that: The coaxial lines are embedded in the edge side wall of the table board.

3. A raise and lower table as claimed in claim 2, characterized in that: An edge sealing strip is connected to the edge side wall of the table board; the edge sealing strip covers the coaxial lines.

4. A lift table as claimed in claim 1, characterized in that: The coaxial lines are embedded in the bottom edge of the table board.

5. A raise and lower table as claimed in claim 4, characterized in that: A decorative strip is connected to the bottom of the table board; the decorative strip covers the coaxial lines.

6. A sit-stand desk as claimed in claim 1, characterized in that: The coaxial lines are pasted on the edge of the table board.

7. A lift table as claimed in claim 1, wherein: The coaxial lines are arranged on the edge of the table board to form a ring-shaped closed detection area.

8. A raise and lower table as claimed in claim 7, characterized in that: Each of the four edges of the table board is provided with a coaxial line.

9. A raise and lower table as claimed in claim 7, characterized in that: Each of the four corners of the table board is provided with an L-shaped coaxial line.

10. A sit-stand desk as claimed in claim 1, characterized in that: The edge of the table board comprises a detection area where the coaxial lines are arranged and a non-detection area where no coaxial lines are arranged; the non-detection area is located on the side of the table board far away from the user.

11. A raising table according to claim 10, characterized in that: The table board comprises a first side close to the user and a second side far away from the first side; the edge of the first side is provided with a coaxial line; the third side and the fourth side adjacent to the first side are both provided with coaxial lines.

12. A raising table according to claim 11, characterized in that: Each of the two corners of the table board is provided with an L-shaped coaxial line, and part of the coaxial line is located on the first side and the remaining part is located on the third side or the fourth side.

13. A raising table according to claim 10, characterized in that: The detection area is located on the side of the table board close to the user.

14. A raising table according to claim 13, characterized in that: One or two coaxial lines are arranged on the side of the table board close to the user.

15. A raising table according to claim 1, characterized in that: The horizontal straight line distance from the center of the coaxial line to the side of the table board is ≤10 cm.

16. A raising table according to claim 1, characterized in that: Further comprising a signal processing unit, which receives the detection signal of the coaxial lines and transmits it to the controller.

17. A raising table according to claim 16, characterized in that: The signal processing unit is arranged in a separately installed signal processor, which is installed on the table board.

18. A raising table according to claim 16, characterized in that: The signal processing unit is integrated in the controller.

19. A raising table according to claim 16, characterized in that: Further comprising a hand controller; the signal processing unit is integrated in the hand controller; the hand controller transmits operation instructions and detection signals to the controller through wireless communication or wired mode.

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