CN113142789B - Synchronous lifting table - Google Patents
Synchronous lifting table Download PDFInfo
- Publication number
- CN113142789B CN113142789B CN202110512656.1A CN202110512656A CN113142789B CN 113142789 B CN113142789 B CN 113142789B CN 202110512656 A CN202110512656 A CN 202110512656A CN 113142789 B CN113142789 B CN 113142789B
- Authority
- CN
- China
- Prior art keywords
- controllable
- lifting
- column
- lifting column
- control switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 53
- 230000001105 regulatory effect Effects 0.000 claims abstract description 31
- 230000001276 controlling effect Effects 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims description 32
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000033001 locomotion Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 29
- 230000007246 mechanism Effects 0.000 description 11
- 230000009286 beneficial effect Effects 0.000 description 7
- 230000005484 gravity Effects 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000009545 invasion Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000004484 Briquette Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B9/00—Tables with tops of variable height
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B9/00—Tables with tops of variable height
- A47B9/04—Tables with tops of variable height with vertical spindle
Landscapes
- Tables And Desks Characterized By Structural Shape (AREA)
Abstract
The utility model discloses a synchronous lifting table, which comprises: support column, table subassembly, lifting column, lead screw, hold-in range, pressure regulating system and control switch. The support column is inside to be equipped with controllable spring, and the extensible member of controllable spring is vertical to be stretched out and be connected with the table subassembly, and lifting column slip cap is established on the support column, and lifting column upper end is connected with the table subassembly, and each lifting column realizes synchronizing through the lead screw that is connected by the hold-in range, and pressure regulating system is used for adjusting controllable spring internal pressure, and control switch is used for controlling the state of controllable spring. When the control switch is opened, the controllable spring enters a working state, and the controllable switch is closed after the height of the desktop is adjusted. The gas chambers of the controllable springs are connected, so that the power of the controllable springs is homologous, and the unbalance of the movement of the lifting columns is reduced; each lead screw reaches the synchronous effect through the hold-in range, and then makes each lift post synchronous, has avoided adopting the noise problem and the probably dead problem of card that each lift post of rigid connection piece connection exists.
Description
Technical Field
The utility model relates to a table, in particular to a synchronous lifting table.
Background
Tables are a common tool used in work to place and support items and provide an office environment. With the improvement of the requirements of people on working environments, the common office table cannot meet the requirements, on one hand, the table top with a fixed height cannot meet the use requirements of different people (when the height difference is large); on the other hand, keeping a sitting position for a long time is not beneficial to the health needs of people, and after the sitting position is worked for a long time, people may need to stand for working, and a tabletop with a fixed height cannot meet the needs.
Thus, a liftable desk is required. The gas spring is an important mechanical device and can play the roles of supporting, buffering, braking, height adjustment, angle adjustment and the like. The gas spring is generally composed of the following parts: a pressure cylinder, a piston rod, a piston, a sealing guide sleeve, a filler (inert gas or oil-gas mixture), an in-cylinder control element, an out-cylinder control element (controllable gas spring, simply called controllable spring), a joint and the like. The principle is that the pressure cylinder is filled with filler to make the pressure in the pressure cylinder several times to tens times higher than the atmospheric pressure, and the piston rod is moved by the pressure difference generated by the cross section area of the piston rod being smaller than the cross section area of the piston. The gas spring is relatively slow, relatively stable in force (force fluctuation is generally within 1:1.2), and easy to control, so that the gas spring can be used for manufacturing lifting tables.
In view of the limited supporting force of the single-column (supporting column) table and the relatively poor stability, a multi-column table is preferable, and thus, the problem of synchronization of the columns (the portions for lifting) during lifting (if not synchronized, the table top may be inclined or jammed during lifting) must be considered. Some of the inventors have proposed solutions to the problem of synchronization of multiple power drives, for example, the patent of the utility model, known as "pneumatic door synchronization mechanism", disclosed in publication No. CN209369579U, which includes a first lifting mechanism, a second lifting mechanism, and a connecting shaft, which is connected to a first coupling on the first lifting mechanism and a second coupling on the second lifting mechanism, respectively, so as to achieve synchronization of the two lifting mechanisms. However, the structure has certain defects, and when the two lifting mechanisms actually work, the two lifting mechanisms move independently and then are synchronous through the connecting shaft, so that the two lifting mechanisms on the source head are asynchronous to a certain extent; the two lifting mechanisms are connected through the connecting shaft to realize synchronization, and the rigid connecting shaft is easy to generate noise when being adjusted to be synchronous and is easy to be blocked when the two lifting mechanisms are not synchronous.
Disclosure of Invention
The utility model aims to provide a synchronous lifting table which can adjust the height of a table top, wherein the power of lifting columns is homologous, and the lifting columns are synchronous in lifting through a flexible synchronous belt.
The technical scheme of the utility model is as follows: a synchronized lifting table, comprising:
the support columns are multiple, the support columns are vertically distributed, controllable springs are arranged in the support columns, telescopic members of the controllable springs vertically extend out of the support columns, and gas cavities of the controllable springs are connected;
the desk plate assembly is connected to the upper end of the telescopic piece;
the lifting column is sleeved on the supporting column in a sliding manner, and the upper end of the lifting column is connected with the table plate assembly;
the upper part of the screw rod is rotatably arranged in the lifting column, the lower end of the screw rod vertically extends into the supporting column, a nut is matched on the screw rod, and the nut is fixed in the supporting column;
the synchronous belt is wound at the upper end of each screw rod;
the pressure regulating system is arranged at the lower part of the desk plate assembly and used for regulating the pressure in the controllable spring;
the control switch is arranged at the lower part of the desk plate assembly and used for controlling the state of the controllable spring.
The synchronous lifting table adopts a controllable spring (specifically referring to a double-cylinder controllable gas spring disclosed by publication No. CN 107701639A) as a power element, and a certain amount of high-pressure gas is filled in the controllable spring. When the control switch is turned on, the controllable spring enters a working state, the lifting column drives the table plate assembly to move (generally to rise), the table plate assembly drives the lifting column to move, the screw rod moves along with the lifting column, and simultaneously, the screw rod rotates, the synchronous belt wound at the upper end of each screw rod can balance the rotating difference of each screw rod, synchronous rotation of each screw rod is ensured, lifting synchronization of each lifting column is ensured, and stable movement of the table plate assembly is ensured. The gas cavities of the controllable springs are connected, so that the power of the controllable springs is derived from the gas pressure of the same cavity, and unbalance of movement of the lifting columns is reduced from the source; each lead screw reaches the synchronous effect through the hold-in range, and then makes each lift post synchronous, has avoided adopting the noise problem and the probably dead problem of card that each lift post of rigid connection piece connection exists.
When the height of the table top is required to be adjusted, the pressure regulating system can be operated in advance to adjust the pressure in the controllable spring according to the adjustment requirement (lifting or lowering and height), the control switch is turned on, and if the height of the table top is required to be lifted, the controllable switch is turned off when the table top assembly is waited to be lifted to the required height; if the height of the tabletop needs to be reduced, the controllable switch is turned off when the tabletop assembly is lowered to the required height by manual pressing. The controllable spring is arranged in the default power direction to provide power for lifting the table plate assembly (and the objects thereon), and the pressure regulating system is operated to enable the pressure in the controllable spring to be slightly larger than the gravity of the table plate assembly (and the objects thereon), so that the table plate assembly stably moves, and the force required for pressing the table plate assembly is not too large.
Preferably, the control rod of the controllable spring vertically extends out of the support column, and the controllable spring is in a working state when the control rod is pressed down. The working state of the controllable spring can be controlled through the vertically extending control rod, and the connection structure of the control switch and the controllable spring is beneficial to optimization.
Preferably, a pressing block is arranged at the lower part of the desk plate assembly, the pressing block can press down the control rod, and the control switch can control the pressing block to work. The control rod is convenient to operate and move through the pressing block, and then the control of the control switch to the controllable spring is realized.
Preferably, the table assembly comprises a connecting frame and a table; a sliding groove is arranged on the connecting frame, a sliding block is arranged in the sliding groove in a sliding way, and a spring is arranged between the connecting frame and the desk plate; the connecting frame can rigidly support the table plate when the sliding block is positioned below the table plate, the table plate floats on the connecting frame when the sliding block slides out of the lower part of the table plate, and the pressing block can press down the control rod when the table plate is pressed down;
the control switch has three states: first, second and third states; when the control switch is in a first state, the pressing block does not work; when the control switch is in the second state, the pressing block presses down the control rod; when the control switch is in a third state, the sliding block slides out of the lower part of the desk plate.
The control switch can realize the separation control of the lifting of the desk plate assembly, if the desk plate assembly needs to be lifted, the control switch is in a second state, and when the desk plate assembly is lifted to the required height, the controllable switch is reset to a first state; if the height of the table top needs to be reduced, the control switch is in a third state, at the moment, the table plate floats on the connecting frame, the table plate is pressed down to enable the pressing block to press down the control rod, the table plate is continuously pressed down to the required height, the controllable springs are locked after the table plate is loosened, and the controllable switch is reset to the first state to enable the table plate to be rigidly supported by the connecting frame. This avoids the inconvenience that may exist when the height of the table top needs to be reduced due to the separate operation of the table top assembly and the control switch by both hands, for example: the force of one hand is insufficient, and the table plate assembly is difficult to press and hold; the table assembly will rise a certain distance at the beginning of the stage, and the distance for pressing down the table assembly increases.
Preferably, the pressure regulating system comprises a hand rotating handle and a pressure gauge, the pressure in the controllable spring can be regulated by rotating the hand rotating handle, and the pressure gauge is used for displaying the numerical value of the pressure in the controllable spring. The pressure in the controllable spring can be adjusted by rotating the hand rotating handle, and the power of the controllable spring can be judged by the numerical value displayed by the pressure gauge, so that the height of the tabletop can be conveniently adjusted.
Preferably, the method for adjusting the height of the desk plate assembly comprises the following steps:
firstly, predicting a value of the pressure in a controllable spring according to adjustment requirements;
secondly, rotating the hand rotating handle until the pressure gauge value reaches the estimated controllable spring pressure value;
thirdly, turning on the control switch, and turning off the control switch when the desk board assembly needs to be lifted and the desk board assembly is waiting for reaching the required height; when the desk plate assembly is required to be lowered, the controllable switch is turned off when the desk plate assembly is lowered to the required height by hand.
The pressure in the controllable spring is slightly larger than the gravity of the desk plate assembly (and objects on the desk plate assembly) at the beginning, and when the desk top height needs to be raised, the pressure in the controllable spring can be properly increased so as to provide the power for raising the desk plate assembly; when the height of the tabletop needs to be reduced, the pressure in the controllable spring can be properly reduced, so that the resistance when the tabletop assembly is manually pressed down is reduced.
Preferably, a guide block is arranged on the upper portion of the support column, the guide block is matched between the support column and the lifting column, and the guide block is used for limiting the sliding of the lifting column. The guide block can limit the sliding of the lifting column, ensure the sliding of the lifting column in the vertical direction and avoid the instability or the blocking caused by the inclination of the lifting column.
Preferably, a retaining sleeve is arranged at the lower end of the lifting column, the retaining sleeve is matched between the supporting column and the lifting column, and the retaining sleeve is used for limiting the sliding of the lifting column. The retaining sleeve can limit the sliding of the lifting column, ensure the sliding of the lifting column in the vertical direction (particularly in the descending process), and avoid the instability or the blocking caused by the inclination of the lifting column.
Preferably, the timing belt is a belt having a steel wire inside. Therefore, the synchronous belt has flexibility and ensures the strength of the synchronous belt, which is favorable for ensuring the synchronism of the rotation of each screw rod and prolonging the service life of the synchronous belt.
The beneficial effects of the utility model are as follows: the controllable spring is adopted as a power source, so that the height of the tabletop is adjusted; the gas cavities of the controllable springs are connected, the power of each controllable spring is derived from the gas pressure of the same cavity, and the unbalance of the movement of each lifting column is reduced from the source; the screws of the device achieve the synchronous effect through the synchronous belt, so that the lifting columns are synchronous, and the problems of noise and possible jamming existing in the process of connecting the lifting columns by adopting the rigid connecting piece are avoided.
Drawings
Fig. 1 is a front view of the present utility model.
Fig. 2 is a left side view of the present utility model.
Fig. 3 is a top view of the present utility model.
Fig. 4 is a schematic view of the support column and lifting column of the present utility model.
Fig. 5 is a schematic view of the control switch control pressure block depressing control lever of the present utility model.
Fig. 6 is a schematic view of the sliding groove of the present utility model.
Fig. 7 is a schematic view of the control switch control slider of the present utility model sliding out under the desk board.
Figure 8 is a schematic view of the utility model with the press block depressed against the control lever as the table is depressed.
In the figure:
a support column 1;
a controllable spring 2;
a telescopic member 3;
a desk board assembly 4, a connecting frame 4.1 and a desk board 4.2;
a lifting column 5;
a lead screw 6;
a nut 7;
a synchronous belt 8;
a pressure regulating system 9;
a control switch 10;
a control lever 11;
a briquette 12;
a sliding groove 13;
a slider 14;
a hand crank 15;
a pressure gauge 16;
a guide block 17;
a retaining sleeve 18.
Detailed Description
For the purpose of making the technical solution embodiment, the technical solution and the advantages of the present utility model more apparent, the technical solution of the embodiment of the present utility model will be clearly explained and illustrated below with reference to the accompanying drawings, but the following embodiment is only a preferred embodiment of the present utility model, not all embodiments. Based on the examples in the implementation manner, other examples obtained by a person skilled in the art without making creative efforts fall within the protection scope of the present utility model.
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present solution and are not to be construed as limiting the solution of the present utility model.
These and other aspects of embodiments of the utility model will be apparent from and elucidated with reference to the description and drawings described hereinafter. In the description and drawings, particular implementations of embodiments of the utility model are disclosed in detail as being indicative of some of the ways in which the principles of embodiments of the utility model may be employed, but it is understood that the scope of the embodiments of the utility model is not limited correspondingly. On the contrary, the embodiments of the utility model include all alternatives, modifications and equivalents as may be included within the spirit and scope of the appended claims.
In the description of the present utility model, it should be understood that the terms "thickness," "upper," "lower," "horizontal," "top," "bottom," "inner," "outer," "circumferential," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present utility model. In the description of the present utility model, the meaning of "a plurality" means at least two, for example, two, three, etc., unless explicitly defined otherwise, the meaning of "a number" means one or more.
In the present utility model, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, or in communication with one another; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
First embodiment: as shown in fig. 1 to 5, a synchronous lifting table includes:
the support columns 1 are multiple, the support columns 1 are vertically distributed, controllable springs 2 are arranged in the support columns, telescopic pieces 3 of the controllable springs 2 vertically extend out of the support columns 1, and gas cavities of the controllable springs 2 are connected;
the desk plate assembly 4 is connected to the upper end of the telescopic piece 3;
the lifting column 5 is sleeved on the supporting column 1 in a sliding manner, and the upper end of the lifting column 5 is connected with the table plate assembly 4;
the upper part of the screw rod 6 is rotatably arranged in the lifting column 5, the lower end of the screw rod 6 vertically extends into the support column 1, a nut 7 is matched on the screw rod 6, and the nut 7 is fixed in the support column 1;
the synchronous belt 8 is wound on the upper end of each screw rod 6;
the pressure regulating system 9 is arranged at the lower part of the desk plate assembly 4 and used for regulating the pressure in the controllable spring 2;
and a control switch 10, wherein the control switch 10 is arranged at the lower part of the desk board assembly 4 and is used for controlling the state of the controllable spring 2.
The synchronous lifting table of this embodiment has a controllable spring 2 (refer to the "double-cylinder controllable gas spring" patent disclosed in publication No. CN107701639a specifically) as its power element, and a certain amount of high-pressure gas is filled in the interior. When the control switch 10 is opened, the controllable spring 2 enters a working state (the controllable spring 2 is locked when the control switch 10 is closed), the lifting column 5 drives the table plate assembly 4 to move (generally to ascend), the table plate assembly 4 drives the lifting column 5 to move, the lead screw 6 moves along with the lifting column 5, meanwhile, the lead screw 6 rotates, the synchronous belt 8 wound at the upper end of each lead screw 6 can balance the rotating difference of each lead screw 6, synchronous rotation of each lead screw 6 is ensured, ascending and descending of each lifting column 5 are ensured, and stable movement of the table plate assembly 4 is ensured. Wherein, the gas chambers of the controllable springs 2 are connected, so that the power of the controllable springs 2 is derived from the gas pressure of the same chamber, and the unbalance of the movement of the lifting columns 5 is reduced from the source; each lead screw 6 reaches the synchronous effect through the hold-in range 8, and then makes each lift post 5 synchronous, has avoided adopting the noise problem and the probably dead problem of card that each lift post 5 of rigid connection piece connection exists.
When the height of the table top is required to be adjusted, the pressure adjusting system 9 can be operated in advance to adjust the pressure in the controllable spring 2 according to the adjustment requirement (lifting or lowering and height), the control switch 10 is turned on, and when the height of the table top is required to be lifted, the controllable switch 10 is turned off when the table top assembly 4 is waited to be lifted to the required height; if it is desired to lower the height of the table top, the controllable switch 10 is turned off when the table top assembly 4 is lowered to the desired height by hand. The controllable spring 2 is operated to provide power for lifting the table assembly 4 (and the objects thereon) in a default power direction, and the pressure regulating system 9 is operated to enable the pressure in the controllable spring 2 to be slightly greater than the gravity of the table assembly 4 (and the objects thereon), so that the table assembly 4 can move stably, and the force required for pressing the table assembly 4 is not too great.
Further, the control rod 11 of the controllable spring 2 vertically extends out of the support column 1, and the controllable spring 2 is in a working state when the control rod 11 is pressed down. The working state of the controllable spring 2 can be controlled by the vertically extending control rod 11, which is beneficial to optimizing the connection structure of the control switch 10 and the controllable spring 2.
Further, the lower part of the desk plate assembly 4 is provided with a pressing block 12, the pressing block 12 can press down the control rod 11, and the control switch 10 can control the pressing block 12 to work. The control rod 11 is convenient to operate and move by arranging the pressing block 12, so that the control of the control switch 10 on the controllable spring 2 is realized.
Further, the pressure regulating system 9 comprises a hand rotating handle 15 and a pressure gauge 16, the pressure in the controllable spring 2 can be regulated by rotating the hand rotating handle 15, and the pressure gauge 16 is used for displaying the pressure value in the controllable spring 2. The volume of gas in the pressure regulating system 9 can be changed by rotating the hand rotating handle 15, and the gas cavity of the pressure regulating system 9 is connected with the gas cavity of the controllable spring 2, so that the pressure in the controllable spring 2 can be regulated, the power of the controllable spring 2 can be judged by the numerical value displayed by the pressure gauge 16, and the height of a table top can be conveniently regulated.
Further, the height adjustment method of the table assembly 4 comprises the following steps:
firstly, predicting the value of the pressure in the controllable spring 2 according to the adjustment requirement;
secondly, rotating the hand-operated rotating handle 15 until the value of the pressure gauge 16 reaches the estimated value of the pressure in the controllable spring 2;
third, turn on the control switch 10, wait until it reaches the required height to turn off the control switch 10 when the desk board assembly 4 needs to be lifted; the controllable switch is turned off when the table assembly 4 is lowered to the desired height by hand.
The pressure in the controllable spring 2 is slightly larger than the gravity of the desk board assembly 4 (and objects thereon) at the beginning, when the desk board height needs to be raised, the pressure in the controllable spring 2 can be properly increased so as to provide the power for raising the desk board assembly 4; when the height of the table top needs to be reduced, the pressure in the controllable spring 2 can be properly reduced, so that the resistance when the table top assembly 4 is pressed down by hands is reduced.
Further, a guide block 17 is arranged at the upper part of the support column 1, the guide block 17 is matched between the support column 1 and the lifting column 5, and the guide block 17 is used for limiting the sliding of the lifting column 5. The guide block 17 can limit the sliding of the lifting column 5, ensure the sliding in the vertical direction and avoid the instability or the blocking caused by the inclination of the lifting column. In order to reduce friction during sliding, the guide block 17 is provided with steel balls which are in contact with the lifting column 5 in the embodiment.
Further, a retaining sleeve 18 is provided at the lower end of the lifting column 5, the retaining sleeve 18 is fitted between the support column 1 and the lifting column 5, and the retaining sleeve 18 is used for restricting the sliding of the lifting column 5. The retaining sleeve 18 can limit the sliding of the lifting column 5, ensure the sliding in the vertical direction (especially when descending) and avoid the instability or the seizing caused by the inclination of the lifting column. The retaining sleeve 18 in this embodiment has a sealing effect at the same time, preventing the invasion of foreign matter from affecting the sliding of the lifting column 5.
Further, the timing belt 8 is a belt with steel wires inside. Therefore, the synchronous belt 8 has flexibility and ensures the strength of the synchronous belt, which is beneficial to ensuring the rotation synchronism of each screw rod 6 and prolonging the service life of the synchronous belt 8. In this embodiment, the timing belt 8 is a flat belt, and in other embodiments, in order to increase the restriction of the rotation of each screw 6 by the timing belt 8, the timing belt 8 may be a V-belt or a toothed belt.
Specific embodiment II: as shown in fig. 1 to 8, a synchronous lifting table includes:
the support columns 1 are multiple, the support columns 1 are vertically distributed, controllable springs 2 are arranged in the support columns, telescopic pieces 3 of the controllable springs 2 vertically extend out of the support columns 1, and gas cavities of the controllable springs 2 are connected;
the desk plate assembly 4 is connected to the upper end of the telescopic piece 3;
the lifting column 5 is sleeved on the supporting column 1 in a sliding manner, and the upper end of the lifting column 5 is connected with the table plate assembly 4;
the upper part of the screw rod 6 is rotatably arranged in the lifting column 5, the lower end of the screw rod 6 vertically extends into the support column 1, a nut 7 is matched on the screw rod 6, and the nut 7 is fixed in the support column 1;
the synchronous belt 8 is wound on the upper end of each screw rod 6;
the pressure regulating system 9 is arranged at the lower part of the desk plate assembly 4 and used for regulating the pressure in the controllable spring 2;
and a control switch 10, wherein the control switch 10 is arranged at the lower part of the desk board assembly 4 and is used for controlling the state of the controllable spring 2.
The synchronous lifting table of this embodiment has a controllable spring 2 (refer to the "double-cylinder controllable gas spring" patent disclosed in publication No. CN107701639a specifically) as its power element, and a certain amount of high-pressure gas is filled in the interior. When the control switch 10 is opened, the controllable spring 2 enters a working state (the controllable spring 2 is locked when the control switch 10 is closed), the lifting column 5 drives the table plate assembly 4 to move (generally to ascend), the table plate assembly 4 drives the lifting column 5 to move, the lead screw 6 moves along with the lifting column 5, meanwhile, the lead screw 6 rotates, the synchronous belt 8 wound at the upper end of each lead screw 6 can balance the rotating difference of each lead screw 6, synchronous rotation of each lead screw 6 is ensured, ascending and descending of each lifting column 5 are ensured, and stable movement of the table plate assembly 4 is ensured. Wherein, the gas chambers of the controllable springs 2 are connected, so that the power of the controllable springs 2 is derived from the gas pressure of the same chamber, and the unbalance of the movement of the lifting columns 5 is reduced from the source; each lead screw 6 reaches the synchronous effect through the hold-in range 8, and then makes each lift post 5 synchronous, has avoided adopting the noise problem and the probably dead problem of card that each lift post 5 of rigid connection piece connection exists.
When the height of the table top is required to be adjusted, the pressure adjusting system 9 can be operated in advance to adjust the pressure in the controllable spring 2 according to the adjustment requirement (lifting or lowering and height), the control switch 10 is turned on, and when the height of the table top is required to be lifted, the controllable switch 10 is turned off when the table top assembly 4 is waited to be lifted to the required height; if it is desired to lower the height of the table top, the controllable switch 10 is turned off when the table top assembly 4 is lowered to the desired height by hand. The controllable spring 2 is operated to provide power for lifting the table assembly 4 (and the objects thereon) in a default power direction, and the pressure regulating system 9 is operated to enable the pressure in the controllable spring 2 to be slightly greater than the gravity of the table assembly 4 (and the objects thereon), so that the table assembly 4 can move stably, and the force required for pressing the table assembly 4 is not too great.
Further, the control rod 11 of the controllable spring 2 vertically extends out of the support column 1, and the controllable spring 2 is in a working state when the control rod 11 is pressed down. The working state of the controllable spring 2 can be controlled by the vertically extending control rod 11, which is beneficial to optimizing the connection structure of the control switch 10 and the controllable spring 2.
Further, the lower part of the desk plate assembly 4 is provided with a pressing block 12, the pressing block 12 can press down the control rod 11, and the control switch 10 can control the pressing block 12 to work. The control rod 11 is convenient to operate and move by arranging the pressing block 12, so that the control of the control switch 10 on the controllable spring 2 is realized.
Further, the table top assembly 4 includes a connecting frame 4.1 and a table top 4.2; a sliding groove 13 is arranged on the connecting frame 4.1, a sliding block 14 is arranged in the sliding groove 13 in a sliding way, and a spring is arranged between the connecting frame 4.1 and the table plate 4.2; when the slide block 14 is positioned below the table plate 4.2, the connecting frame 4.1 can rigidly support the table plate 4.2, when the slide block 14 slides out of the lower part of the table plate 4.2, the table plate 4.2 floats on the connecting frame 4.1, and the pressing block 12 can press the control rod 11 by pressing down the table plate 4.2;
the control switch 10 has three states: first, second and third states; when the control switch 10 is in the first state, the pressing block 12 does not work; when the control switch 10 is in the second state, the pressing block 12 presses the control rod 11; when the control switch 10 is in the third state, the slide 14 slides out under the table 4.2.
So the control switch 10 can realize the separation control of the lifting of the desk plate assembly 4, if the desk plate assembly 4 needs to be lifted, the control switch 10 is in a second state, and when the desk plate assembly 4 is lifted to the required height, the controllable switch 10 is reset to a first state; if the height of the table top needs to be reduced, the control switch 10 is in the third state, at this time, the table plate 4.2 floats on the connecting frame 4.1, the table plate 4.2 is pressed down, the pressing block 12 presses down the control rod 11, the table plate 4.2 is continuously pressed down to the required height, the controllable spring 2 is locked when the table plate 4.2 is loosened, and the controllable switch 10 is reset to the first state, so that the table plate 4.2 is rigidly supported by the connecting frame 4.1. This avoids the inconvenience that may exist when the height of the table top is to be lowered due to the separate operation of the table top assembly 4 and the control switch 10 by two hands, for example: the force of one hand is insufficient, and the table assembly 4 is difficult to press and hold down; the table top assembly 4 may initially rise a distance and the distance to press the table top assembly 4 increases.
Further, the pressure regulating system 9 comprises a hand rotating handle 15 and a pressure gauge 16, the pressure in the controllable spring 2 can be regulated by rotating the hand rotating handle 15, and the pressure gauge 16 is used for displaying the pressure value in the controllable spring 2. The volume of gas in the pressure regulating system 9 can be changed by rotating the hand rotating handle 15, and the gas cavity of the pressure regulating system 9 is connected with the gas cavity of the controllable spring 2, so that the pressure in the controllable spring 2 can be regulated, the power of the controllable spring 2 can be judged by the numerical value displayed by the pressure gauge 16, and the height of a table top can be conveniently regulated.
Further, a guide block 17 is arranged at the upper part of the support column 1, the guide block 17 is matched between the support column 1 and the lifting column 5, and the guide block 17 is used for limiting the sliding of the lifting column 5. The guide block 17 can limit the sliding of the lifting column 5, ensure the sliding in the vertical direction and avoid the instability or the blocking caused by the inclination of the lifting column. In order to reduce friction during sliding, the guide block 17 is provided with steel balls which are in contact with the lifting column 5 in the embodiment.
Further, a retaining sleeve 18 is provided at the lower end of the lifting column 5, the retaining sleeve 18 is fitted between the support column 1 and the lifting column 5, and the retaining sleeve 18 is used for restricting the sliding of the lifting column 5. The retaining sleeve 18 can limit the sliding of the lifting column 5, ensure the sliding in the vertical direction (especially when descending) and avoid the instability or the seizing caused by the inclination of the lifting column. The retaining sleeve 18 in this embodiment has a sealing effect at the same time, preventing the invasion of foreign matter from affecting the sliding of the lifting column 5.
Further, the timing belt 8 is a belt with steel wires inside. Therefore, the synchronous belt 8 has flexibility and ensures the strength of the synchronous belt, which is beneficial to ensuring the rotation synchronism of each screw rod 6 and prolonging the service life of the synchronous belt 8. In this embodiment, the timing belt 8 is a flat belt, and in other embodiments, in order to increase the restriction of the rotation of each screw 6 by the timing belt 8, the timing belt 8 may be a V-belt or a toothed belt.
The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, and any simple modification, variation and equivalent transformation of the above embodiment according to the technical substance of the present utility model still fall within the scope of the technical solution of the present utility model.
Claims (3)
1. A synchronous lifting table, comprising:
the support columns (1), the support columns (1) are multiple, the support columns (1) are vertically distributed, controllable springs (2) are arranged in the support columns, the telescopic parts (3) of the controllable springs (2) vertically extend out of the support columns (1), the gas cavities of the controllable springs (2) are connected, and the power of the controllable springs (2) is derived from the gas pressure of the same cavity;
the table plate assembly (4), the table plate assembly (4) is connected to the upper end of the telescopic piece (3);
the lifting column (5) is sleeved on the supporting column (1) in a sliding manner, and the upper end of the lifting column (5) is connected with the table plate assembly (4);
the upper part of the screw rod (6) is rotatably arranged in the lifting column (5), the lower end of the screw rod (6) vertically extends into the support column (1), a nut (7) is matched on the screw rod (6), and the nut (7) is fixed in the support column (1);
the synchronous belt (8), the synchronous belt (8) winds up and establishes in each lead screw (6) upper end;
the pressure regulating system (9) is arranged at the lower part of the desk plate assembly (4) and used for regulating the pressure in the controllable spring (2);
the control switch (10) is arranged at the lower part of the desk plate assembly (4) and used for controlling the state of the controllable spring (2), a control rod (11) of the controllable spring (2) vertically extends out of the support column (1), the controllable spring (2) is in a working state when the control rod (11) is pressed down, a pressing block (12) is arranged at the lower part of the desk plate assembly (4), the pressing block (12) can press down the control rod (11), and the control switch (10) can control the pressing block (12) to work;
the desk board assembly (4) comprises a connecting frame (4.1) and a desk board (4.2); a sliding groove (13) is arranged on the connecting frame (4.1), a sliding block (14) is arranged in the sliding groove (13) in a sliding way, and a spring is arranged between the connecting frame (4.1) and the table board (4.2); when the sliding block (14) is positioned below the table plate (4.2), the connecting frame (4.1) can rigidly support the table plate (4.2), when the sliding block (14) slides out of the lower part of the table plate (4.2), the table plate (4.2) floats on the connecting frame (4.1), and when the table plate (4.2) is pressed down, the pressing block (12) can press down the control rod (11);
the control switch (10) has three states: first, second and third states; when the control switch (10) is in a first state, the pressing block (12) does not work; when the control switch (10) is in the second state, the pressing block (12) presses down the control rod (11); when the control switch (10) is in a third state, the sliding block (14) slides out of the lower part of the table plate (4.2);
the upper part of the support column (1) is provided with a guide block (17), the guide block (17) is matched between the support column (1) and the lifting column (5), and the guide block (17) is used for limiting the sliding of the lifting column (5); the lower end of the lifting column (5) is provided with a retaining sleeve (18), the retaining sleeve (18) is matched between the supporting column (1) and the lifting column (5), and the retaining sleeve (18) is used for limiting the sliding of the lifting column (5).
2. The synchronous lifting table according to claim 1, wherein the pressure regulating system (9) comprises a hand crank (15) and a pressure gauge (16), the pressure in the controllable spring (2) can be regulated by rotating the hand crank (15), and the pressure gauge (16) is used for displaying the pressure value in the controllable spring (2).
3. A synchronous lifting table according to any one of claims 1-2, characterized in that the synchronous belt (8) is a belt with steel wires inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110512656.1A CN113142789B (en) | 2021-05-11 | 2021-05-11 | Synchronous lifting table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110512656.1A CN113142789B (en) | 2021-05-11 | 2021-05-11 | Synchronous lifting table |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113142789A CN113142789A (en) | 2021-07-23 |
| CN113142789B true CN113142789B (en) | 2024-04-05 |
Family
ID=76874569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110512656.1A Active CN113142789B (en) | 2021-05-11 | 2021-05-11 | Synchronous lifting table |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113142789B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107701639A (en) * | 2017-09-06 | 2018-02-16 | 宁波力减震器有限公司 | Twin-tub controllable gas spring |
| CN208573200U (en) * | 2017-08-25 | 2019-03-05 | 魏浩轩 | A kind of liftable desk |
| DE102018008649A1 (en) * | 2018-11-05 | 2020-05-07 | M&R Ingenieurbüro für Gesamtplanung GmbH | Lift table |
| CN111109841A (en) * | 2020-01-09 | 2020-05-08 | 宁波海仕凯驱动科技有限公司 | Pneumatic lifting table frame and lifting table |
| CN210748345U (en) * | 2019-04-17 | 2020-06-16 | 青岛奥阁家具有限公司 | Synchronous lifting learning table |
| CN211672902U (en) * | 2019-11-21 | 2020-10-16 | 宁波一力减震器有限公司 | Multi-column synchronous pneumatic lifting system |
| CN215189898U (en) * | 2021-05-11 | 2021-12-17 | 宁波一力减震器有限公司 | Synchronous lifting table |
-
2021
- 2021-05-11 CN CN202110512656.1A patent/CN113142789B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208573200U (en) * | 2017-08-25 | 2019-03-05 | 魏浩轩 | A kind of liftable desk |
| CN107701639A (en) * | 2017-09-06 | 2018-02-16 | 宁波力减震器有限公司 | Twin-tub controllable gas spring |
| DE102018008649A1 (en) * | 2018-11-05 | 2020-05-07 | M&R Ingenieurbüro für Gesamtplanung GmbH | Lift table |
| CN210748345U (en) * | 2019-04-17 | 2020-06-16 | 青岛奥阁家具有限公司 | Synchronous lifting learning table |
| CN211672902U (en) * | 2019-11-21 | 2020-10-16 | 宁波一力减震器有限公司 | Multi-column synchronous pneumatic lifting system |
| CN111109841A (en) * | 2020-01-09 | 2020-05-08 | 宁波海仕凯驱动科技有限公司 | Pneumatic lifting table frame and lifting table |
| CN215189898U (en) * | 2021-05-11 | 2021-12-17 | 宁波一力减震器有限公司 | Synchronous lifting table |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113142789A (en) | 2021-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20070266912A1 (en) | Multi-Position Work Tables | |
| CN105901923A (en) | Lifting mechanism, lifting working platform containing lifting mechanism, and lifting method of working platform | |
| CN215189898U (en) | Synchronous lifting table | |
| CN113142789B (en) | Synchronous lifting table | |
| CN2417775Y (en) | Adjustable armrest lifting mechanism | |
| CN212912198U (en) | Local lifting table | |
| CN209883366U (en) | Small lifting table | |
| CN2422878Y (en) | Lifting mechanism for adjustable armrest | |
| CN216822214U (en) | Pneumatic multi-column synchronous lifting table | |
| CN111096548A (en) | Multifunctional office table | |
| CN220655166U (en) | Lifting chair | |
| CN216428909U (en) | Novel glass magnesium board floor with adjustable height | |
| CN220069231U (en) | Hydraulic lifting working seat | |
| CN114087504B (en) | LED display screen capable of freely adjusting curved surface structure | |
| CN214483683U (en) | Three-section lifting device and desktop | |
| CN206586585U (en) | A kind of same table | |
| CN220930739U (en) | Liftable subassembly and elevating gear and display | |
| CN216682207U (en) | Wall-mounted morning examination robot | |
| CN210407549U (en) | Vertical lifting table | |
| CN220655168U (en) | Synchronous stable lifting chair | |
| CN220001228U (en) | Deployable island platform | |
| CN219438475U (en) | Adjustable table | |
| CN218246209U (en) | Electric lifting table with keyboard tray | |
| CN117837878A (en) | Electric lifting table | |
| CN217337745U (en) | Pneumatic lifting office table |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Country or region after: China Address after: No.66 Chunxiao xunhai Road, Beilun District, Ningbo City, Zhejiang Province Applicant after: Ningbo Yili Industrial Co.,Ltd. Address before: No.66 Chunxiao xunhai Road, Beilun District, Ningbo City, Zhejiang Province Applicant before: NINGBO YILI SHOCK ABSORBER Co.,Ltd. Country or region before: China |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |