Anti-pinch pneumatic lifting table

By designing an anti-clip pneumatic lifting table, the table plate flips and drives the emergency switch to pull the control line, and controls the rise of the lifting column, solving the problem of user being pinched or table overturned due to misoperation in the prior art, achieving the effect of improving user experience.

CN119699782APending Publication Date: 2025-03-28ZHEJIANG JIECHANG LINEAR MOTION TECH
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Patent Information

Application Number
CN202411879172.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2021-01-26
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

When used in conjunction with lifting equipment, existing pneumatic lifting tables are prone to being pinched or the table is overturned due to misoperation, which reduces the user's user experience.

Method used

A pneumatic lifting table with anti-clips is designed to drive the lifting column upward by flipping the table plate upwards to prevent users from being pinched and the table is overturned. The design includes the table plate hinged to the mounting seat, and the limit seat and emergency switch are fixed on the back of the table plate. The emergency switch and the wrench are connected through the control line. The table plate is turned upward to drive the emergency switch to pull the control line. The control line pulls the wrench and rotates and presses the valve switch to control the rise of the lifting column.

Benefits of technology

It effectively avoids users being pinched and pneumatic lifting tables falling over, improving users' user experience.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses an anti-pinch pneumatic lifting table which comprises a lifting stand column and a table board, the lifting stand column comprises a telescopic sleeve and an air spring arranged in the telescopic sleeve to drive the telescopic sleeve to stretch out and draw back, the air spring comprises a valve switch, and a wrench used for pressing the valve switch is rotationally installed at the top of the telescopic sleeve. A mounting seat located below the table board is fixedly arranged at the top of the lifting stand column, one side of the table board is hinged to the mounting seat, an emergency switch is arranged on the table board and connected with the wrench through a control line, the table board is turned upwards to enable the emergency switch to pull the control line, and the control line is connected with the lifting stand column. The control line pulls the wrench to rotate and presses the valve switch so as to control the lifting stand column to ascend.
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Description

[Technical field]

[0001] The invention relates to the technical field of pneumatic lifting tables, and in particular to an anti-pinch pneumatic lifting table. [Background technology]

[0002] When the existing pneumatic lifting table is used in conjunction with lifting equipment (lifting chairs, lifting medical care beds), if the lifting equipment rises due to misoperation, it will cause the user to be pinched and injured. For example, when used in conjunction with a lifting medical care bed, the table top of the pneumatic lifting table is suspended above the bed body, and the patient's legs are placed between the table top and the bed body. When the nursing staff or the caregiver's family members misoperate and cause the lifting medical care bed to rise, the table top cannot rise with it, and the patient's legs will not only be pinched between the bed body and the table top and injured, but the pneumatic lifting table may also flip over when the lifting medical care bed is raised too much, thereby injuring other people or damaging other items, thereby reducing the user's experience. [Summary of the invention]

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an anti-pinch pneumatic lifting table. By pushing the table top to flip upward, the lifting column can drive the table top to rise, thereby effectively preventing the user from being pinched and the pneumatic lifting table from tipping over.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A pneumatic lifting table with anti-pinch function comprises a lifting column and a table top, the lifting column comprises a telescopic sleeve and a gas spring arranged inside the telescopic sleeve to drive the telescopic sleeve to extend and retract, the gas spring comprises a valve switch, a wrench for pressing the valve switch is rotatably installed on the top of the telescopic sleeve, a mounting seat located below the table top is fixedly provided on the top of the lifting column, one side of the table top is hinged on the mounting seat, an emergency switch is provided on the table top, the emergency switch is connected to the wrench through a control line, the table top is flipped upward so that the emergency switch pulls the control line, and the control line pulls the wrench to rotate and press the valve switch to control the lifting column to rise.

[0006] Furthermore, a limit seat is fixed on the back side of the table top, the limit seat is provided with a through hole for the control line to pass through, the control line is provided with the emergency switch limited on one side of the limit seat, the emergency switch and the wrench are located on both sides of the through hole, the table top is flipped upward to drive the limit seat to rotate, and the limit seat drives the emergency switch to pull the wrench.

[0007] Furthermore, a wire control handle is hinged on the back of the table top, and the wire control handle is arranged close to the other side of the table top. One end of the control line is connected to the wire control handle, and the emergency switch is defined between the limit seat and the wire control handle. The wire control handle is rotated to pull the wrench to rotate through the control line, and the wrench rotates and presses the valve switch to control the lifting and lowering of the lifting column.

[0008] Furthermore, a wired control handle is hinged on the back of the table top, and the wired control handle is arranged close to the other side of the table top. A pull wire with a length greater than the control wire is connected between the wired control handle and the wrench. The wired control handle is rotated to pull the wrench to rotate through the pull wire, and the wrench rotates and presses the valve switch to control the lifting and lowering of the lifting column.

[0009] Furthermore, the emergency switch is a wired control handle, one end of which is hinged to the bottom surface of the mounting base, and a first elastic member is provided between the other end and the back surface of the table top. The wired control handle is rotated to compress the first elastic member or the table top is flipped upward to drive the wired control handle to rotate through the first elastic member, thereby pulling the wrench to rotate and press the valve switch through the control line.

[0010] Furthermore, the pneumatic lifting table also includes a frame arranged on the bottom surface of the table top, and the frame is hinged to the mounting seat by means of hole-shaft cooperation.

[0011] Furthermore, the frame includes a left frame and a right frame that are separately formed, the left frame is provided with a left rotation axis hole, the right frame is provided with a right rotation axis hole, and the left and right ends of one side of the mounting seat are respectively provided with a left rotation axis and a right rotation axis, the left rotation axis is rotationally matched with the left rotation axis hole, and the right rotation axis is rotationally matched with the right rotation axis hole.

[0012] Furthermore, one of the mounting seat and the frame is provided with a pin shaft, and the other is provided with a strip hole slidably matched with the pin shaft, and one end of the strip hole abuts against the pin shaft to limit the upward flipping angle of the table top.

[0013] Furthermore, a second elastic member is press-fitted between the mounting seat and the table top.

[0014] Furthermore, the mounting base includes a flat plate for supporting the table top and an L-shaped support plate provided on one side of the flat plate and extending downward, and the second elastic member is pressed between the table top and a horizontal plate of the L-shaped support plate.

[0015] Beneficial effects of the present invention:

[0016] One side of the table top in the present invention is hinged on the mounting seat, so that the table top can be flipped up and down relative to the mounting seat. When the nursing staff or the caregiver's family members mistakenly operate the lifting medical care bed and cause it to rise, the patient's legs will rise with the bed and push the table top to flip upward. The upward flipping of the table top can drive the emergency switch to move to pull the control line. The control line pulls the wrench to rotate and press the valve switch downward, thereby controlling the lifting column to rise. The rising of the lifting column drives the table top to rise, thereby effectively avoiding the user from being pinched and the pneumatic lifting table from overturning, thereby improving the user experience.

[0017] A limit seat is fixed on the back of the table top, and a through hole is provided on the limit seat for the control line to pass through. The control line is provided with an emergency switch limited to one side of the limit seat, and the emergency switch and the wrench are located on both sides of the through hole. The table top is flipped upward to drive the limit seat to rotate, and the limit seat drives the emergency switch to pull the wrench. This design makes assembly simple and convenient.

[0018] A wire control handle is hinged on the back of the table board, and the wire control handle is arranged near the other side of the table board. One end of the control line is connected to the wire control handle, and the emergency switch is limited between the limit seat and the wire control handle. The wire control handle is turned to pull the wrench through the control line to rotate, and the wrench rotates and presses the valve switch to control the lifting column to rise and fall. Since the emergency switch is closer to the wrench than the wire control handle, when the table board is flipped up to a certain angle, the angle of rotation of the wrench pulled by the emergency switch is greater than the angle of rotation of the wrench pulled by the wire control handle. By utilizing this feature, the angle of the table board flipping up can be reduced, so that the table board can also be lifted by pulling the control line through the emergency switch when the table board is flipped up at a small angle, thereby avoiding the table board flipping up too much The angle causing the items on the table board to fall off; in addition, the emergency switch and the wire control handle are connected to the wrench through the same control line, thereby simplifying the structure and reducing costs; finally, in normal use, the height of the table board can be adjusted by turning the wire control handle without flipping the table board upward, thereby meeting daily lifting needs.

[0019] The emergency switch is a wire control handle, one end of which is hinged to the bottom surface of the mounting base, and a first elastic member is provided between the other end and the back of the table top. The wire control handle is turned to compress the first elastic member or the table top is flipped upward to drive the wire control handle to rotate through the first elastic member, and then the wrench is pulled through the control line to rotate and press the valve switch. The design of the first elastic member enables the user to press the wire control handle to rotate it and to drive the wire control handle to rotate when the table top is flipped upward, so that the lifting column can be controlled to rise and fall when the wire control handle is pressed, and the lifting column can be controlled to rise when the table top is flipped upward; in addition, such a design can also reduce the length of the control line, thereby reducing the material cost.

[0020] The pneumatic lifting table also includes a frame arranged on the bottom surface of the table top, and the frame is hinged to the mounting seat by means of a hole-shaft match. Such a design reduces the difficulty of processing the table top, and at the same time, the frame can be replaced after the hinge fails, thereby reducing the maintenance cost.

[0021] The frame includes a left frame and a right frame which are formed separately. The left frame is provided with a left shaft hole, and the right frame is provided with a right shaft hole. The left and right ends of one side of the mounting seat are provided with a left shaft and a right shaft respectively. The left shaft is rotationally matched with the left shaft hole, and the right shaft is rotationally matched with the right shaft hole. With such a design, after the left frame and the right frame are respectively hinged with the mounting seat, the table top is fixed to the frame, thereby reducing the difficulty of assembling the frame and the mounting seat.

[0022] One of the mounting base and the frame is provided with a pin, and the other is provided with a strip hole for sliding fit of the pin, and one end of the strip hole abuts against the pin to limit the upward flipping angle of the table top. This design prevents the table top from flipping upward excessively and causing items on the table top to fall off.

[0023] A second elastic member is press-fitted between the mounting seat and the table top. With such a design, the second elastic member is in a compressed state, and the elastic force of the second elastic member is used to balance the weight of the table top, thereby reducing the pressure on the table top when the body pushes it to flip.

[0024] The mounting base includes a flat plate for supporting the table top and an L-shaped support plate arranged on one side of the flat plate and extending downward, and the second elastic member is press-fitted between the table top and the horizontal plate of the L-shaped support plate. With such a design, the table top can be stably supported by the flat plate to ensure that the table top is in a horizontal state during normal use.

[0025] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings.

Brief Description of the Drawings

[0026] The present invention will be further described below in conjunction with the accompanying drawings:

[0027] Figure 1 It is an inverted diagram of the pneumatic lifting table in the first embodiment of the present invention;

[0028] Figure 2 This is an exploded view of the pneumatic lifting table in the first embodiment of the present invention when it is placed upright;

[0029] Figure 3 This is a schematic diagram of the assembly of the control wire, the wrench and the gas spring in the first embodiment of the present invention;

[0030] Figure 4 It is a schematic diagram of the assembly of the mounting base and the second elastic member in the first embodiment of the present invention;

[0031] Figure 5 It is an inverted diagram of the pneumatic lifting table in the second embodiment of the present invention;

[0032] Figure 6 This is a schematic diagram of the assembly of the lifting column, control wire and pull wire in the second embodiment of the present invention;

[0033] Figure 7 This is an inverted diagram of the pneumatic lifting table in the third embodiment of the present invention. [Specific implementation method]

[0034] The present invention provides an anti-pinch pneumatic lifting table, comprising a lifting column and a table top, the lifting column comprising a telescopic sleeve and a gas spring arranged inside the telescopic sleeve to drive the telescopic sleeve to extend and retract, the gas spring comprising a valve switch, a wrench for pressing the valve switch is rotatably installed on the top of the telescopic sleeve, a mounting seat located below the table top is fixedly provided on the top of the lifting column, one side of the table top is hinged on the mounting seat, an emergency switch is provided on the table top, the emergency switch is connected to the wrench through a control line, the table top is flipped upward so that the emergency switch pulls the control line, and the control line pulls the wrench to rotate and press the valve switch to control the lifting column to rise.

[0035] One side of the table top in the present invention is hinged on the mounting seat, so that the table top can be flipped up and down relative to the mounting seat. When the nursing staff or the caregiver's family members mistakenly operate the lifting medical care bed and cause it to rise, the patient's legs will rise with the bed and push the table top to flip upward. The upward flipping of the table top can drive the emergency switch to move to pull the control line. The control line pulls the wrench to rotate and press the valve switch downward, thereby controlling the lifting column to rise. The rising of the lifting column drives the table top to rise, thereby effectively avoiding the user from being pinched and the pneumatic lifting table from overturning, thereby improving the user experience.

[0036] The technical solutions of the embodiments of the present invention are explained and described below in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0037] Embodiment 1

[0038] Reference Figures 1 to 4As shown, the pneumatic lifting table in this embodiment includes a lifting column and a table top 100. The lifting column includes a telescopic sleeve 200 and a gas spring 300 arranged inside the telescopic sleeve 200 to drive the telescopic sleeve 200 to extend and retract. The bottom of the telescopic sleeve 200 is fixedly connected to a table leg 400. The gas spring 300 in this embodiment is a self-locking gas spring, including a valve switch 310. A fixed plate 400 and a support arranged through the fixed plate 400 are fixed to the top of the telescopic sleeve 200. A wrench 500 is hinged on the support. The wrench 500 can be rotated to press the valve switch 310 downward. A mounting base 600 located below the table top 100 is also fixed to the top of the lifting column. The mounting base 600 is fixedly connected to the fixing plate 400 by screws. One side of the table top 100 is hinged on the mounting base 600 so that the table top 100 can be flipped up and down relative to the mounting base 600. An emergency switch 700 is fixed to the back of the table top 100. The emergency switch 700 is connected to the wrench 500 by a control line 800. When the table top 100 is flipped upward, the emergency switch 700 can be driven to move to pull the control line 800. The control line 800 pulls the wrench 500 to rotate and press the valve switch 310 downward. When there is no external force pressing the table top 100 downward, the gas spring 300 drives the telescopic sleeve 200 to extend, that is, the lifting column rises to increase the height of the table top 100. Therefore, when using the pneumatic lift table in this embodiment, if the nursing staff or the caregiver's family members mistakenly operate the lifting medical care bed and cause it to rise, the patient's legs will rise with the bed and push the table top 100 to flip upward. The upward flipping of the table top 100 can drive the emergency switch 700 to pull the control line 800 to drive the wrench 500 to rotate and press the valve switch 310 downward, thereby controlling the lifting column to rise. The rising lifting column drives the table top 100 to rise, thereby effectively avoiding the user from being pinched and the pneumatic lift table from overturning, thereby improving the user experience.

[0039] Specifically, in this embodiment, an L-shaped limit seat 900 is fixed to the back of the table top, and the horizontal plate of the limit seat 900 is fixed to the back of the table top by screws. The above-mentioned emergency switch 700 is fixed on the control line 800. The vertical plate of the limit seat 900 is provided with a through hole 910 for the control line 800 to pass through, and the horizontal plate of the limit seat 900 is provided with a mounting hole 920 for avoiding the emergency switch 700. The mounting hole 920 is connected with the through hole 910. During assembly, the emergency switch 700 is pressed to the bottom of the horizontal plate through the mounting hole 920, so that the control line 800 can pass through the through hole 910. The assembly is simple and convenient. After assembly, the emergency switch 700 is confined to the side of the vertical plate away from the wrench 500, that is, the emergency switch 700 and the wrench 500 are located on both sides of the through hole 910, and the control line 800 extends toward the side of the table top 100 away from its hinge. When the table top 100 is flipped upward, the table top 100 will drive the limit seat 900 to rotate. The emergency switch 700 pulls the control line 800 under the limiting action of the limit seat 900, so that the control line 800 pulls the wrench 500 to rotate, thereby controlling the lifting column to rise.

[0040] In addition, in order to be able to control the lifting of the lifting column without flipping the table top 100 upward, a wire control handle 1000 is hinged on the back of the table top in this embodiment. The wire control handle 1000 is arranged close to the other side of the table top 100, that is, close to the side of the table top 100 away from the mounting seat 600. One end of the wire control handle 1000 is hinged on the back of the table top and connected to one end of the control line 800. In normal state, the other end of the wire control handle 1000 is pulled away from the table top by the control line 800, and the emergency switch 700 is limited between the limit seat 900 and the wire control handle 1000. When the table top 100 is in a horizontal state, pressing the other end of the wire control handle 1000 toward the direction of the table top 100 can make the wire control handle 1000 rotate and pull the control line 800, and then pull the wrench 500 to rotate through the control line 800, the wrench 500 rotates and presses the valve switch 310, and cooperates with whether there is an external force pressing the table top 100 downward to control the lifting of the lifting column. That is, if there is no external force pressing the table top 100 downward when the valve switch 310 is pressed, the lifting column rises; if there is an external force pressing the table top 100 downward when the valve switch 310 is pressed, the lifting column descends.

[0041] In this embodiment, since the emergency switch 700 is closer to the wrench 500 than the wire control handle 1000, when the table top 100 is flipped upward by a certain angle, the angle of rotation of the wrench 500 pulled by the emergency switch 700 is greater than the angle of rotation of the wrench pulled by the wire control handle 1000. Therefore, limiting the emergency switch 700 between the limit seat 900 and the wire control handle 1000 can reduce the upward flipping angle of the table top 100, and can ensure that after the table top 100 is flipped upward to this angle, the control line 800 can be pulled by the emergency switch 700 to make the table top 100 rise, thereby avoiding the table top 100 flipping upward at too large an angle and causing items on the table top 100 to fall off; in addition, in this embodiment, the emergency switch 700 and the wire control handle 100 are connected to the wrench 500 through the same control line 800, thereby simplifying the structure and reducing the cost; finally, in normal use, by pressing the other end of the wire control handle toward the table top 100, the wire control handle 1000 can be rotated and the control line 800 can be pulled, thereby realizing the height adjustment of the table top 100 without flipping the table top 100 upward, meeting daily lifting needs.

[0042] In order to further reduce the difficulty of assembling the control line 800 and the limit seat 900, the horizontal plate of the limit seat 900 in this embodiment is also provided with an avoidance hole 930 connected to the mounting hole 920, and the avoidance hole 930 and the through hole 910 are located on both sides of the mounting hole 920. One end of the avoidance hole 930 extends to the edge of the horizontal plate along the extension direction of the control line 800. Therefore, when the emergency switch 700 is pressed downward to pass through the mounting hole 920 and enter under the horizontal plate, the part of the control line 800 located between the emergency switch 700 and the wire control handle 1000 enters under the horizontal plate through the avoidance hole 930, and at the same time, the part of the control line 800 located between the emergency switch 700 and the wrench 500 passes through the through hole 910.

[0043] In order to reduce the subsequent maintenance costs, the pneumatic lifting table in this embodiment also includes a frame 2000 arranged on the bottom surface of the table top. The frame 2000 is fixed to the back of the table top by screws. The frame 2000 and the mounting base 600 are hinged by hole-axis cooperation. Such a design reduces the processing difficulty of the table top 100. At the same time, the frame 2000 can be replaced after the hinge fails, thereby reducing maintenance costs. The frame 2000 in this embodiment includes a left frame 2100 and a right frame 2200 which are separately formed and symmetrically arranged. The left frame 2100 and the right frame 2200 are both L-shaped. A left rotation axis hole is provided at one end of the left frame 2100, and a right rotation axis hole opposite to the left rotation axis hole is provided at one end of the right frame 2200. The mounting base 600 includes a flat plate 610 for supporting the table top 100. A hinge portion 620 extending downward is provided on one side of the flat plate 610 close to the hinge side of the table top. A left rotation axis and a right rotation axis are respectively provided at the left and right ends of the hinge portion 620. The left rotation axis rotates with the left rotation axis hole, and the right rotation axis rotates with the right rotation axis hole. With such a design, after the left frame 2100 and the right frame 2200 are respectively hinged to the mounting base 600, the table top 100 is fixed to the frame 2000, thereby reducing the difficulty of assembling the frame 2000 and the mounting base 600.

[0044] It is understandable that in other embodiments of the present invention, the left and right ends of the hinged portion are respectively provided with rotation shaft holes, and the corresponding left frame and right frame are respectively provided with rotation shafts rotatably matched with the rotation shaft holes.

[0045] In order to limit the upward flipping angle of the table top 100, in this embodiment, the inner sides of the left frame 2100 and the right frame 2200 are respectively provided with vertically extending strip holes 2300, and the left and right sides of the flat plate 610 are respectively fixed with pins 630, and the pins 630 are slidably matched with the strip holes 2300. The upward flipping angle of the table top 100 can be limited by limiting the length of the strip holes 2300. When the table top is flipped upward until the lower end of the strip hole 2300 is against the pins 630, the table top 100 cannot continue to flip upward, thereby limiting the upward flipping angle of the table top 100, thereby preventing the table top 100 from flipping upward excessively and causing items on the table top 100 to fall off.

[0046] It can be understood that in other embodiments of the present invention, the strip holes can also be provided on both sides of the mounting base, and the two pin shafts are respectively provided on the inner side surfaces of the left frame and the right frame. When the pin shafts abut against the upper ends of the strip holes, the table top can be prevented from continuing to flip upward, thereby achieving the effect of limiting the angle at which the table top can flip upward.

[0047] Finally, in order to reduce the pressure applied when the body pushes the table top 100 to flip upward, a second elastic member 3000 is pressed between the mounting base 600 and the table top 100 in this embodiment. The second elastic member 3000 is an elastic silicone pad or an elastic rubber pad or a spring, and is preferably a spring in this embodiment. The spring is pressed between the mounting base 600 and the table top 100 and is in a compressed state. The upward elastic force of the second elastic member 3000 can be used to balance the weight of the table top 100, thereby reducing the pressure applied when the body pushes the table top 100 to flip upward.

[0048] In order to ensure that the mounting base 600 can stably support the table top 100 and ensure that the table top 100 is in a horizontal state for normal use, the mounting base 600 in this embodiment also includes an L-shaped support plate 640 arranged on one side of the flat panel 610 and extending downward, and the second elastic member 3000 is pressed between the table top 100 and the horizontal plate of the L-shaped support plate 640. In this state, the back of the table top is against the flat panel 610.

[0049] Embodiment 2

[0050] like Figure 5 to Figure 6 As shown, compared with the first embodiment, the difference of this embodiment is that a pull wire 4000 having a length greater than the control wire 800 is connected between one end of the wire control handle 1000 and the wrench 500, and the pull wire 4000 is arranged in parallel with the control wire 800. By pressing the other end of the wire control handle 1000 in the direction of the table board 100, the wire control handle 1000 can be rotated and the pull wire 4000 can be pulled to rotate the wrench 500, so that the wrench 500 can press the valve switch 310 downward and control the lifting column to rise or fall in accordance with whether there is an external force. When the table board 100 flips upward, the emergency switch 700 can be driven to pull the control wire 800 to drive the wrench 500 to rotate and press the valve switch 310 downward, thereby controlling the lifting column to rise, and the lifting column rises to drive the table board 100 to rise, thereby effectively avoiding the situation where the user is pinched and the pneumatic lifting table overturns, and improving the user's experience.

[0051] It is understandable that in other embodiments of the present invention, one end of the control line can also be directly fixed to the back of the table top by screws.

[0052] Embodiment 3

[0053] like Figure 7As shown, compared with embodiments one to two, the difference of this embodiment is that the emergency switch 700 is a wire control handle, one end of the wire control handle is hinged on the bottom surface of the mounting seat 600, and a first elastic member 5000 is provided between the other end and the back of the table top, and the first elastic member 5000 is an elastic silicone pad or an elastic rubber pad or a spring, and is preferably a spring in this embodiment. Pressing the other end of the wire control handle toward the table top 100 can make the wire control handle rotate and pull the control line 800 to pull the wrench 500 to rotate, so that the wrench 500 presses the valve switch 310 downward and cooperates with whether there is external force to control the lifting and lowering of the lifting column; when the user's legs push the table top 100 to flip upward, the table top 100 pulls the other end of the wire control handle through the first elastic member 5000, so that the wire control handle rotates and pulls the control line 800, and the control line 800 pulls the wrench 500 to rotate so that the wrench 500 presses the valve switch 310 downward, thereby controlling the lifting and lowering of the lifting column. In addition, such a design can also reduce the length of the control line 800, thereby reducing material costs.

[0054] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. An anti-pinch pneumatic lifting table, comprising a lifting column and a table top, wherein the lifting column comprises a telescopic sleeve and a gas spring arranged inside the telescopic sleeve to drive the telescopic sleeve to extend and retract, the bottom of the telescopic sleeve is fixedly connected to a table leg, and the gas spring comprises a valve switch, characterized in that: A wrench for pressing the valve switch is rotatably installed on the top of the telescopic sleeve, a mounting seat located below the table board is fixedly provided on the top of the lifting column, one side of the table board is hinged on the mounting seat, an emergency switch is provided on the table board, the emergency switch is connected to the wrench through a control line, the table board is flipped upward so that the emergency switch pulls the control line, the control line pulls the wrench to rotate and press the valve switch to control the lifting column to rise, the emergency switch is a wire-controlled handle, one end of the wire-controlled handle is hinged on the bottom surface of the mounting seat, and a first elastic member is provided between the other end and the back side of the table board, the wire-controlled handle is rotated to compress the first elastic member or the table board is flipped upward to drive the wire-controlled handle to rotate through the first elastic member, and then the wrench is pulled to rotate and press the valve switch through the control line.

2. The anti-pinch pneumatic lifting table according to claim 1, characterized in that: The pneumatic lifting table also includes a frame arranged on the bottom surface of the table top, and the frame is hinged to the mounting seat by means of hole-shaft cooperation.

3. The anti-pinch pneumatic lifting table according to claim 2, characterized in that: The frame includes a left frame and a right frame that are separately formed, the left frame is provided with a left rotation shaft hole, the right frame is provided with a right rotation shaft hole, and the left and right ends of one side of the mounting seat are respectively provided with a left rotation shaft and a right rotation shaft, the left rotation shaft is rotationally matched with the left rotation shaft hole, and the right rotation shaft is rotationally matched with the right rotation shaft hole.

4. The anti-pinch pneumatic lifting table according to claim 2, characterized in that: One of the mounting seat and the frame is provided with a pin shaft, and the other is provided with a strip hole that slidably cooperates with the pin shaft, and one end of the strip hole abuts against the pin shaft to limit the upward flipping angle of the table top.

5. The anti-pinch pneumatic lifting table according to claim 1, characterized in that: A second elastic member is press-fitted between the mounting seat and the table top.

6. The anti-pinch pneumatic lifting table according to claim 5, characterized in that: The mounting seat includes a flat plate for supporting the table top and an L-shaped support plate arranged on one side of the flat plate and extending downward, and the second elastic member is pressed between the table top and a horizontal plate of the L-shaped support plate.