WO2021008584A1

WO2021008584A1 - Gas spring principle-based linked synchronous liftable table having external gas storage cylinder or tank

Info

Publication number: WO2021008584A1
Application number: PCT/CN2020/102371
Authority: WO
Inventors: 乔彬
Original assignee: 乔彬
Priority date: 2019-07-18
Filing date: 2020-07-16
Publication date: 2021-01-21
Also published as: CN110236292A

Abstract

A gas spring principle-based linked synchronous liftable table having an external gas storage cylinder or tank comprising a table top (1) and a base (4), and is characterized in that the table top (1) is mounted on to the base by means of at least two telescopic legs (3) manufactured on the basis of the principle of a gas spring. The telescopic leg (3) consists of a piston rod (77), cylinders (33), and a power cylinder or tank (57). A rod-equipped cavity of one cylinder (33) communicates with a rodless cavity of another cylinder (33), and communicates with a storage cavity of one power cylinder or tank (57) providing driving force. A rod-equipped cavity of the last cylinder (33) communicates with a rodless cavity of the first cylinder (33), and communicates with a storage cavity of the last power cylinder or tank (57). High-pressure gas in a power cavity (99) of the power cylinder or tank (57) provides driving force for raising the table top (1). The high-pressure gas compresses and stores energy when the table top (1) is lowered. The liftable table has a simple structure, is low-cost, is easy to manufacture, supports synchronous rising and lowering, and has good locking performance at any height.

Description

Synchronous lifting table with external cylinder or tank linkage based on gas spring principle

Technical field

The invention relates to a piece of furniture, in particular to an external air storage cylinder (tank) linkage gas spring synchronous lifting table capable of ensuring synchronous lifting, in particular to an external air storage cylinder or tank linkage synchronization lifting table based on the gas spring principle.

Background technique

People use a variety of desks when working and studying. Long-term use of ordinary traditional desks can easily cause cervical, lumbar diseases and other diseases in the process of sitting and studying. Properly changing the posture of standing and using the table can effectively prevent the cervical spine. The occurrence of diseases, lumbar spondylosis, etc., scientific research has shown that the harmfulness of sitting for a long time is even greater than the harm caused by smoking, and standing office for a long time can consume a certain amount of extra calories, maintain the body and weight, and contribute to the overall health of the body. In order to suit users of different body heights, the existing lifting desks have designed various hand-cranked, double or even multi-motor electric height adjustment desks and single and double air rods (gas springs) adjustable height desks. The manual lifting adopts the principle of mechanical gear transmission. It is completely dependent on the manual shaking of the handle to lift the desktop and the load through the gear structure transmission. When the desktop rises, the hand feels heavy, and the load is too heavy, which can easily cause the situation that ordinary users cannot use it. The large force causes the rocker arm to deform, the transmission gear and other devices are damaged, and the service life is not long; and the double or even multi-motor electric height adjustment desk needs to install multiple sets of motors and electrical and mechanical drive systems, and double or even multi-motor electric adjustment In order to keep each motor synchronized during high use, a multi-motor synchronization controller is required. Therefore, it is noisy and has a high failure rate. It must also be used in an area with a power socket. The area is limited and cannot be moved freely. Moreover, the price of dual or even multi-motor and mechanical drive system is not close to the people, so that the double or even multi-motor electric lifting desk can not be promoted in a large area; single and double air rods (gas spring) adjustable height desks do not need power supply, and can be operated by manpower. , Green and environmental protection, the use area is not limited, and you can move around freely, but the ordinary single pneumatic telescopic rod adjustable height desk only supports a gas rod (gas spring) and pillar in the middle of the desktop, and there is a problem of unstable installation of the table body. It increases the difficulty of the user’s operation; the desks with dual pneumatic telescopic rods on the market that adjust the height will have problems that the air springs are independent of each other and cannot coordinate the simultaneous expansion of the two air rods (gas springs) and uneven load, resulting in the desktop Tilting, jamming occurs, and there is also no good user experience. At the same time, due to space constraints, the diameter and length of traditional gas springs cannot be made too large, which restricts the storage volume of high-pressure gas or oil-gas mixture inside the gas spring, especially the load When it is larger, the power is easier when ascending, and the power is huge when descending, and the user is very strenuous.

Summary of the invention

The purpose of the present invention is for the existing lifting desks with two or more single-column support structures that have difficulty in synchronizing the lifting legs or can achieve synchronous lifting but the structure is complicated, the manufacturing cost is high, and the user is very difficult when the load is large. The problem is to design a synchronous lift table with a simple structure, low cost, convenient synchronization, and easy up and down use of external cylinders (tanks) linked with a gas spring.

One of the technical solutions of the present invention is:

An external cylinder or tank linkage synchronous lifting table based on the gas spring principle. It includes a table top 1 and a base 4, and is characterized in that the table top 1 is mounted on the base 4 through at least two lifting legs 3 made based on the gas spring principle Above, the lifting leg 3 is composed of a piston rod 77, a cylinder 33, and a power cylinder or tank 57. The power cylinder or tank 57 is divided into a storage chamber 88 and a power chamber 99 by the power piston 100. A cylinder 33 has a rod chamber. It communicates with the rodless cavity of the other cylinder 33 and also communicates with the storage cavity 88 of the power cylinder or tank 57 as the driving power. The rod cavity of the last cylinder 33 and the rodless cavity of the first cylinder 33 The chamber communicates with the storage chamber 88 of the last power cylinder or tank 57. The high-pressure gas or gas-liquid mixture in the power chamber 99 of the power cylinder or tank 57 provides power for the desktop lifting. The gas-liquid mixture compresses energy storage.

The storage cavity 88 of the power cylinder or tank 57 is connected to the rod cavity of the cylinder 33 through the pipe 6.

A control valve A is installed on the pipe connecting one cylinder with a rod cavity and another cylinder without a rod cavity, and each control valve A is individually controlled or controlled by a control switch 18 installed under the desktop.

The pistons in the adjacent power cylinders or tanks 57 are connected by connecting rods so that the pistons move synchronously to ensure the synchronous lifting of the desktop. The power cylinders or tanks 57 can be rigidly connected in the same direction or not connected (in this case, because the internal resistance of each cylinder and the gas spring may be different and the external pressure may be different, it is very easy to be out of synchronization), but keep each internal The pressure value of the stored high-pressure gas or oil-gas mixture is the same in real time, and it is generally recommended to connect rigidly in the same direction.

The second technical solution of the present invention is:

An external cylinder or tank linkage synchronous lifting table based on the gas spring principle. It includes a table top 1 and a base 4, and is characterized in that the table top 1 is mounted on the base 4 through at least two lifting legs 3 made based on the gas spring principle Above, the lifting leg 3 is composed of a piston rod 77, a cylinder 33 and a power cylinder or tank 57. The power cylinder or tank 57 is divided into a storage chamber 88 and a power chamber 99 by the power piston 100. The cylinder 33 has a rod chamber and The rodless chambers are connected by a shut-off valve. The shut-off valve is controlled by an operating rod installed in the piston rod 77. A valve button 55 is installed at the top of the operating rod; it serves as a storage for a power cylinder or tank 57 that drives the piston rod to rise. The cavity 88 communicates with the cavity where the control rod is installed in the piston rod 77 through the pipe 6, and the lower end of the cavity communicates with the rod cavity of the cylinder 33. The adjacent power cylinder or tank 57 is used to separate the power cavity 99 The pistons of the storage cavity 88 are not connected to each other or connected by connecting rods to realize synchronous movement, so as to ensure synchronous lifting of the desktop. The high-pressure gas or high-pressure gas-liquid mixture in the power chamber 99 of the power cylinder or tank 57 provides power for lifting the tabletop, and the high-pressure gas or gas-liquid mixture compresses energy when the tabletop is lowered. Each external power cylinder or tank 57 must be the same model and the internal and external size and structure are exactly the same, and each cylinder 33 must be the same model and the internal and external size and structure are exactly the same.

The third technical solution of the present invention is:

An external cylinder or tank linkage synchronous lifting table based on the gas spring principle, which includes a table top 1) and a base 4), characterized in that the table top 1) is installed by at least two lifting legs 3 made based on the gas spring principle On the base 4, the lifting leg 3 is composed of a piston rod 77, a cylinder block 33, and a power cylinder or tank 57. The power cylinder or tank 57 is divided into a storage chamber 88 and a power chamber 99 by the power piston 100. The cylinder block 33 consists of It consists of a cylinder block and an outer cylinder block. The piston rod and piston are installed in the inner cylinder block. A normally open through hole is opened between the rod cavity of the inner cylinder block and the outer cylinder block. A shut-off valve connecting the two is installed between the shut-off valve, and a valve button 55 is provided on the shut-off valve. The outer cylinder body is connected to the storage chamber 88 of the power cylinder or tank 57 through the pipe 6, and the adjacent power cylinder or tank 57 is The piston used to separate the power chamber 99 and the storage chamber 88 is connected by a connecting rod to realize synchronous movement, so as to ensure synchronous lifting of the desktop. The high-pressure gas or high-pressure gas-liquid mixture in the power chamber 99 of the power cylinder or tank 57 provides power for lifting the tabletop, and the high-pressure gas or gas-liquid mixture compresses energy when the tabletop is lowered.

The piston rod 77 and the cylinder 33 are installed in the retractable table leg 2, and the power cylinder or tank 57 is installed under the table top or installed inside the retractable table leg 2 through the oil pipe and the cylinder 33. The rod cavity is connected.

The medium in the cylinder 33 is oil, water, oil-water mixture, gas or oil-gas mixture. Accordingly, the medium stored in the storage cavity 88 of the power cylinder or tank 57 is also oil, water, oil-water mixture, gas or For the oil-gas mixture, the medium in the high-pressure chamber of the power cylinder or tank 57 is a high-pressure gas or a high-pressure gas-liquid mixture whose pressure is higher than the pressure in the storage chamber 88.

The high-pressure gas chambers or high-pressure gas-liquid mixing chambers of adjacent power cylinders or tanks 57 are connected by pipes.

The piston rods 77 of the lifting legs 3 are installed in the same direction or in staggered installation. The same direction installation means that the rod out directions of the piston rods are the same, and the staggered installation means that the rod out directions of the piston rods are different.

An extended arm support 5 is installed on the piston rod 77 and is connected to the desktop 1 through the extended arm support 5.

The beneficial effects of the present invention:

Because the gas spring drive is convenient and fast, does not require power supply, it has high recovery and energy storage efficiency. It has the characteristics of high efficiency, safety and stability. It has been used in all aspects of production and life for decades, as long as two or more identical gas is placed The spring and the external gas storage tank (cylinder), two or several gas springs are fully connected to each corresponding external gas storage tank (cylinder) through the pipeline, and can also transmit even more than 99% of the displacement simultaneously. At the same time, it is supplemented by valves such as reversing valve or stop valve and gate valve to control the movement and locking of the driving piston rod 77 in the gas spring. At the same time, the application of an external gas storage tank (cylinder) greatly reduces the user's physical requirements. The conduction efficiency and displacement efficiency fully meet the needs of daily office and study, especially the use requirements of women, children and the elderly. Without the fetters of the power cord, it is convenient and safe to move and use, and it is very convenient and user-friendly.

According to this feature, using a gas spring as the power source, two or more external accumulators (tanks) linked to the gas spring can achieve two or more lifting legs simultaneously doing the same force in the same direction. The same amount of displacement movement completely solves the problem that a single power source cannot synchronize all table legs and multiple power sources easily interfere with each other, causing system incoordination or even jamming. When all table legs are loaded unevenly, the desktop will not tilt, Jamming phenomenon, convenient operation, large bearing capacity, good synchronization, fast response speed, stable and reliable performance, does not cause the desktop to tilt during the lifting process due to heavy objects on one end of the table, and has a good user experience; external storage The application of the cylinder (tank) greatly reduces the user's physical requirements and meets the requirements of women, children and the elderly. At the same time, the conduction system can use flexible pipes to meet the table’s displacement requirements during elevated and lowered displacements without damage, and due to the flexible expansion and contraction characteristics of the pipes, the same set of devices can meet the requirements of desk systems with different sizes of desks. The gas spring system has the characteristics of high efficiency and stability, simple structure, low price, and long service life. The full life of a general gas spring system generally reaches tens of thousands or even hundreds of thousands of reciprocating movements. It is calculated according to the normal lifting desk 30 times a day. Under normal conditions of use, the service life can reach or exceed 10 years. Moreover, it can use high-pressure nitrogen, high-pressure air and other high-pressure gas or oil-gas mixture conduction media, which is green and environmentally friendly, convenient to obtain materials, low price, easy to maintain, and not affected by bad weather.

Using external cylinder (tank) linkage gas spring as the power source, a linkage composed of 2 or more external cylinder (tank) linkage gas springs, low cost, simple structure, safe and reliable with few moving parts, single action and High efficiency, low control force, excellent humanized function, equipped with various needle valves, reversing valves or stop valves and gate valves (one or more valves can be controlled at the same time) to control the movement of the driving piston rod 77 in the gas spring And lock, can be stopped and locked at any position, long service life, no external power supply, green and environmental protection, easy to move.

The invention has the advantages of simple structure, low cost, convenient manufacture, small control force, excellent humanized function, good synchronous lifting performance, no fetters of power cord, convenient and safe mobile use and the like.

Description of the drawings

Fig. 1 is a schematic diagram of the table top descending state when all the gas springs are installed in the same direction according to the present invention.

Fig. 2 is a schematic diagram of the table top raised state when the gas springs are all installed in the same direction according to the present invention.

Fig. 3 is a schematic diagram of the table top in the descending state when the gas spring is installed in a forward and reverse direction according to the present invention.

Fig. 4 is a schematic diagram of a raised state of the table top when the present invention adopts the gas spring to be installed forward and backward.

Fig. 5 is a schematic diagram showing that the external accumulator (tank) of the technical scheme 1 of the present invention is not connected with the external accumulator (tank) by using the external accumulator (tank) to link the gas spring.

Fig. 6 is a schematic diagram of the rigid co-directional connection of the external accumulator (tank) in the technical scheme 1 of the present invention by using the external accumulator (tank) to link the gas spring.

Fig. 7 is a schematic diagram of the rod cavity connected with the external accumulator (tank) through the piston rod 77 in the technical scheme 2 of the present invention using an external accumulator (tank) to link the gas spring.

Fig. 8 is a schematic diagram of the connection between the rod cavity of the technical solution 2 of the present invention and the external accumulator (tank) through the cavity of the gas spring 3 by using an external accumulator (tank) to link the gas spring.

Fig. 9 is a schematic diagram of multiple external accumulator (tank) linkage gas springs installed in the same direction and staggered in technical scheme 1 of the present invention.

Fig. 10 is a schematic diagram of a plurality of external gas storage cylinders (tanks) linked to gas springs installed in the same direction and staggered in technical scheme 2 of the present invention.

In the figure: GTJZ means that the medium is one of oil, water, aqueous solution, gas, and gas-liquid mixture.

DLJZ stands for high-pressure gas or gas-liquid mixture.

Detailed ways

The present invention will be further described below in conjunction with the drawings and embodiments.

Example one.

As shown in Figure 1, 2, 5, and 6.

An external cylinder or tank linkage synchronous lifting table based on the principle of gas spring. It includes a table top 1 and a base 4. The table top 1 has at least two (this embodiment takes two as an example for illustration, multiple connections can be (See Figure 9) The lifting leg 3 made on the basis of the gas spring principle is mounted on the base 4. The lifting leg 3 is composed of a piston rod 77, a cylinder 33 and a power cylinder or tank 57. A cylinder 33 has a rod cavity It communicates with the rodless cavity of the other cylinder 33 and also communicates with the storage cavity 88 of the power cylinder or tank 57 as the driving power. The rod cavity of the last cylinder 33 and the rodless cavity of the first cylinder 33 The chamber communicates with the storage chamber 88 of the last power cylinder or tank 57. The high-pressure gas or gas-liquid mixture in the power chamber 99 of the power cylinder or tank 57 provides power for the desktop lifting. The gas-liquid mixture compresses energy storage. In Figure 1 (retracted state), the rodless end of the cylinder 3 is fixedly connected to the base 4, and the piston rod 77 is connected to the desktop 1 through the extended arm support 5. As shown in Figure 1, the lifting leg 3 is installed in the telescopic assembly In the sleeve forming the table leg 2, the rod cavity of the first cylinder 33 is connected to the rodless cavity of the second cylinder 33 through the flexible pipe 6, and the rod cavity of the second cylinder 33 passes through the flexible pipe 6. Connected to the rodless cavity of the first cylinder block 33; meanwhile, the rod cavity of each cylinder block is connected to a pipe one to one to a separate power cylinder or tank (that is, an external gas storage tank (cylinder), the same below ) 57, in order to facilitate the up and down movement of the piston rod 77, the medium (one of gas, oil, oil-water, water, aqueous solution, oil and gas mixture) is in the cylinder 33 (part with the piston rod 77) of the gas spring and the external gas storage tank (cylinder) ) 57, each gas spring cylinder 33 (part with piston rod 77) is connected to the storage cavity 88 (used to store the same medium as the cylinder) of each external gas storage tank (cylinder) 57 through a pipeline. For one-to-one connection, the gas spring cylinder 33 (part with piston rod 77) no longer stores high-pressure gas or oil and gas mixture, but instead stores it in an external gas storage tank (cylinder) 57, and each external gas storage tank (cylinder) ) 57 can be connected rigidly in the same direction (Figure 6) or not connected (Figure 5); when the valve (A) is opened by operating the switch 18, the cylinder 33 of each gas spring is due to the pressure of the rod cavity and the rodless cavity The difference causes the piston rod 77 to generate upward thrust. The upward thrust of each piston rod 77 subtracts the weight of the table 1 and the moving parts and the movement friction is the difference F1, and the valve (A) has been opened at this time, when F1 is a positive value, at the same time Push the piston rod 77 of the gas spring 3 on the left and right sides to move upward.

In the schematic diagram of Figure 6, we can see that the gas springs on the left and right sides have the same internal and external structure. The two external gas storage tanks (cylinders) 57 connected to them are also internal and external. Exactly the same model, in the initial state on the right side of Figure 6 at this time, through the connection of the flexible pipe 6, the totality of the two closed state media ((oil, water, aqueous solution, gas, gas-liquid mixture)) The volume S is the same, which are the rodless cavity volume E(e) of each gas spring plus the rod cavity volume d(D) of another gas spring plus the corresponding external gas storage tank (cylinder) 57b(B) (Because the volume of the medium ((oil, water, aqueous solution, gas, gas-liquid mixture)) in the flexible pipe 6 is always full and constant, it is a constant value, so it can be ignored in the formula for discussing each variable)

That is, in the initial state on the right side of Figure 6:

E+d+b=e+D+B=S

Because the two external storage cylinders (tanks) are rigidly connected in the same direction, in any case:

b=B

And because the gas springs on the left and right sides are identical in internal and external structure

So the internal volume of the two gas springs is the same:

E+D=e+d

So the above formula evolved into:

E+d=e+D

E+D=e+d

then:

E=e

D=d

That is to say, no matter what state the piston rod 77 moves up and down, the corresponding volumes of the rod cavity and rodless cavity of the gas spring cylinders on the left and right sides are the same, that is, the left and right The piston rods 77 of the gas springs on both sides are at the same height position. At the same time, the valve A, such as a reversing valve, a shut-off valve, and a gate valve, controls the movement and locking of the driving piston rod 77 in the gas spring, which can drive the desktop 1 Stable level rise, fall and lock any position steadily.

The volume of the rodless cavity of the gas spring on the left and right sides becomes larger, and the volume of the rod cavity becomes smaller. The medium (oil, water, aqueous solution) in the storage cavity 88 of the external gas storage tank (cylinder) 57 connected to it correspondingly , Gas, gas-liquid mixture) through the flexible pipe 6 squeezed into the left and right side gas spring rodless cavity as a supplement for the volume difference when the rodless cavity and the rod cavity have the same displacement, so that the corresponding external gas storage tank ( The volume of the storage chamber 88 of the cylinder 57 becomes smaller, and at the same time, the volume of the storage chamber 88 of another external gas storage tank (cylinder) 57 that is rigidly connected in the same direction is reduced with the same volume, and the right gas spring cylinder is made through the flexible pipe 6 The medium (oil, water, aqueous solution, gas, and gas-liquid mixture) in the rod cavity of the body 33 (hereinafter referred to as gas spring) is replenished so that the gas spring 3 on the other side has the medium (oil, water, The volume of the water solution, gas, gas-liquid mixture) becomes smaller, which drives the piston rod 77 of each gas spring to extend. When the left and right gas springs are of the same model, each gas spring has a rod cavity and a rodless cavity with the same diameter and volume, and each piston rod 77 length When the diameter is the same, the movement speed and displacement of the piston rod 77 of each spring are the same, which drives the table top 1 to rise steadily and horizontally; when the valve (A) is closed by the control switch 18, although each gas spring has a rod cavity and a rodless cavity pressure The difference causes the piston rod 77 to generate a thrust F1 upwards, but at this time the valve (A) has been closed, and the left gas spring has the medium (oil, water, aqueous solution, gas, gas and liquid mixture) in the rod cavity and cannot move to the right gas spring The rodless cavity of the gas spring on the right side (oil, water, aqueous solution, gas, gas and liquid mixture) in the rod cavity cannot move to the rodless cavity of the left gas spring. The piston rod 77 is locked to cause the table top 1 to be locked in height; after the table top 1 rises; as shown in Figure 2, when the valve (A) is opened by the control switch 18, a downward force F2 is simultaneously applied to the table top 1, and when F2 is greater than F1 , And the valve (A) has been opened at this time, forcing the medium (oil, water, aqueous solution, gas, gas and liquid mixture) in the rodless cavity of the gas spring on the right to move to the rod cavity of the gas spring on the left, and at the same time The medium (oil, water, aqueous solution, gas, gas-liquid mixture) in the spring rodless cavity moves to the rod cavity of the right gas spring, driving the piston rod 77 of each gas spring to shorten. When the left and right gas springs are of the same model, each When the gas spring has the same diameter and volume as the rod cavity and the rodless cavity, and the length and diameter of each piston rod 77 are also the same, at this time the movement speed and displacement of the piston rod 77 of each spring are the same, driving the table top 1 to drop smoothly and horizontally; the control switch 18 drives When the valve (A) is closed, although the downward force F2 is applied to the desktop 1 and F2 is greater than F1, the valve (A) is closed at this time, and the medium (oil, water, aqueous solution, The gas, gas-liquid mixture) cannot move to other gas spring chambers. At this time, the piston rod 77 of each gas spring is locked, which promotes the height of the table top 1 to lock. The principle diagrams are shown in Figures 9 and 10. When the principle diagram of Figure 9 is placed on the right side, the rodless ends of each gas spring are fixed on the base 4 (or the desktop 1), and the ends of each piston rod 77 They are all fixedly connected to the desktop 1 through an extended arm support 5, or they can be placed on the left side of the schematic diagram of FIG. 9, the rodless ends of each gas spring are fixed on the desktop 1 through the extended arm support 5, and the piston rod 77 The end is fixed on the base 1; when the principle diagram of FIG. 10 is used, the rodless end of one gas spring is fixed on the base, and the rodless end of the other gas spring is fixed on the desktop 1 through the extended arm support 5.

In specific implementation, when the length of the desktop is long or the turning structure is driven, when three or more lifting legs are required for support, for easy operation, it can also be the rod cavity of the first gas spring and the second gas spring. The rodless cavity is connected, the rod cavity of the second gas spring is connected to the rodless cavity of the third gas spring, and the rod cavity of the third gas spring is connected to the rodless cavity of the fourth gas spring. By analogy, the rod cavity of the last gas spring is connected to the rodless cavity of the first gas spring; at the same time, the rod cavity of each gas spring is connected to a pipe one to one to a separate external gas storage tank ( Cylinder) 57 to facilitate the medium ((oil, water, aqueous solution, gas, gas-liquid mixture)) when the piston rod 77 moves up and down between the gas spring (part with piston rod 77) and the external gas storage tank (cylinder) 57 Each gas spring (part 77 with piston rod) is connected to each external gas storage tank (cylinder) 57 individually one-to-one correspondence through pipes, and the gas spring (part 77 with piston rod) no longer stores the medium ((oil) , Water, aqueous solution, gas, gas-liquid mixture)), but stored in the external gas storage tank (cylinder) 57, each external gas storage tank (cylinder) 57 is preferably connected in the same direction as shown in Figure 6. , The non-rigid connection shown in Figure 5 can also be used to make the desktop horizontal, but the two piston rods need to be equally stressed when pressing down.

If the table top is composed of more than two pieces, and the height of each table top needs to be adjusted, measures such as increasing or reducing the volume of the gas spring supporting the corresponding table top and changing the length of the piston rod 77 can be adopted to achieve this.

During specific implementation, a valve (A) can also be installed on each flexible pipe 6, and one or more control switches 18 can be used to control the opening or closing of the valve (A), so as to control the lifting and position locking of the table top 1.

Example two.

As shown in Figures 3, 4, 5 and 6.

The difference between this embodiment and the first embodiment is that the gas spring is installed forward and backward (one gas spring has a rod cavity connected to the other gas spring without lever cavity), and the piston rod 77 of the gas spring 3 in one lifting leg 2 is connected with The base 4 is fixedly connected, the rodless end of the gas spring 3 is connected to the desktop 1 through the extended arm support 5; the rodless end of the gas spring 3 in the other lifting leg 2 is fixedly connected to the base 4, and the piston rod 77 of the gas spring 3 passes through The extended arm support 5 is connected to the desktop 1. The forward-installed gas spring has a rod cavity and the reverse-installed gas spring without lever cavity is connected by a flexible pipe 6. At the same time, the forward installed gas spring has a lever cavity and the reverse installed gas spring has a lever cavity connected by a flexible pipe 6, and the rest are connected with The first embodiment is the same.

Example three.

As shown in Figure 7.

An external cylinder or tank linkage synchronous lifting table based on the gas spring principle. It includes a table top 1 and a base 4. The table top 1 is installed on the base 4 through at least two lifting legs 3 made based on the gas spring principle. The lifting leg 3 is composed of a piston rod 77, a cylinder 33, and a power cylinder or tank 57. The rod cavity and the rodless cavity of the cylinder 33 are connected by a shut-off valve, which is controlled by being installed in the piston rod 77 A valve button 55 is installed at the top of the operating rod; the storage chamber 88 of the power cylinder or tank 57 that drives the piston rod ascends power is communicated with the cavity where the control rod is installed in the piston rod 77 through the pipe 6 The lower end is communicated with the rod cavity of the cylinder 33, and the pistons in the adjacent power cylinders or tanks 57 for separating the power cavity 99 and the storage cavity 88 are connected by connecting rods to realize synchronous movement to ensure synchronous lifting of the desktop. The high-pressure gas or high-pressure gas-liquid mixture in the power chamber 99 of the power cylinder or tank 57 provides power for lifting the tabletop, and the high-pressure gas or gas-liquid mixture compresses energy when the tabletop is lowered. Each external power cylinder or tank 57 must be the same model and the internal and external size and structure are exactly the same, and each cylinder 33 must be the same model and the internal and external size and structure are exactly the same.

The difference between this embodiment and the first embodiment is that in the first embodiment, the rod cavity of the first gas spring is connected with the rodless cavity of the second gas spring, and the rod cavity of the second gas spring is connected to the third gas spring. The rodless cavity of two gas springs is connected, the rodless cavity of the third gas spring is connected to the rodless cavity of the fourth gas spring 3, and so on, the rod cavity of the last gas spring is connected to the first gas spring. The rodless cavity of the spring 3 is connected; each connection is connected by a flexible pipe 6, and at the same time, the external pipe of each gas spring is connected to a separate external air storage tank (cylinder) 57 to facilitate the piston rod 77 When moving up and down, the oil liquid (or water and aqueous solution) flows between the gas spring body 3 (part 77 with piston rod) and the external gas storage tank (cylinder) 57, and each gas spring body (part 77 with piston rod) flows through the pipe Each external gas storage tank (cylinder) 57 is individually connected one-to-one; and the rod cavity of each gas spring of this embodiment passes through the hollow piston rod 77 through the pipe 6 one-to-one individually and the corresponding external gas storage tank (cylinder) ) 57 is connected, the rodless cavity and rod cavity between adjacent gas springs (cylinder 33) are not physically connected to each other, each gas spring can be set in its rodless cavity or rod cavity through various The various valve buttons on the body and the piston rod 77 and the ejector mechanism 55 drive various needle valves, reversing valves or stop valves and gate valves (A) to maintain the difference between the rod cavity and the rodless cavity of each cylinder 33 The connection and disconnection between each valve (A) and the locking of any valve (A) can cause the entire system to be completely locked. At the same time, each external gas storage tank (cylinder) 57 is rigidly connected in the same direction. The advantage of this embodiment over the first embodiment is that the number of various pipelines is much reduced, the exposed pipeline parts are few, the structure is simple and reliable, the valve button and the ejector mechanism 55 and various needle valves, reversing valves or stop valves and gate valves, etc. The valve (A) has a compact structure, low cost, quick production and assembly, simple and easy on-site installation, and is easy to realize mass production.

Example four.

As shown in Figure 8.

An external cylinder or tank linkage synchronous lifting table based on the gas spring principle, which includes a table top 1) and a base 4), characterized in that the table top 1) is installed by at least two lifting legs 3 made based on the gas spring principle On the base 4, the lifting leg 3 is composed of a piston rod 77, a cylinder 33, and a power cylinder or tank 57. The cylinder 33 is composed of an inner cylinder and an outer cylinder. The piston rod and piston are installed in the inner cylinder. A normally open through hole is opened between the rod cavity of the inner cylinder and the outer cylinder. A shut-off valve connecting the two is installed between the rodless cavity of the inner cylinder and the outer cylinder. The shut-off valve is provided with a valve button 55, The outer cylinder body is connected to the storage chamber 88 of the power cylinder or tank 57 through the pipe 6, and the pistons in the adjacent power cylinder or tank 57 for separating the power chamber 99 and the storage chamber 88 are connected by a connecting rod to achieve Synchronous movement to ensure synchronous elevation of the desktop. The high-pressure gas or high-pressure gas-liquid mixture in the power chamber 99 of the power cylinder or tank 57 provides power for lifting the tabletop, and the high-pressure gas or gas-liquid mixture compresses energy when the tabletop is lowered.

The difference between this embodiment and the first embodiment is that in the first embodiment, the rod cavity of the first gas spring is connected with the rodless cavity of the second gas spring, and the rod cavity of the second gas spring is connected to the third gas spring. The rodless cavity of two gas springs is connected, the rodless cavity of the third gas spring is connected to the rodless cavity of the fourth gas spring 3, and so on, the rod cavity of the last gas spring is connected to the first gas spring. The rodless cavity of the spring 3 is connected; each connection is connected by a flexible pipe 6, and at the same time, the external pipe of each gas spring is connected to a separate external air storage tank (cylinder) 57 to facilitate the piston rod 77 When moving up and down, the oil liquid (or water and aqueous solution) flows between the gas spring body 3 (part 77 with piston rod) and the external gas storage tank (cylinder) 57, and each gas spring body (part 77 with piston rod) flows through the pipe Each external gas storage tank (cylinder) 57 is individually connected one-to-one correspondingly; while the outer cylinder of each gas spring in this embodiment is individually connected to the external gas storage tank (cylinder) 57 through the pipe 6 one to one, adjacent The rodless cavity and the rod cavity between the gas springs (cylinder 33) are not physically connected to each other. Each gas spring can be set on its rodless cavity or rod cavity and piston rod 77 through various Various valve buttons and ejector mechanism 55 drive various needle valves, reversing valves or shut-off valves and gate valves (A) to maintain the on-off between the rodless cavity of each inner cylinder and the outer cylinder, and any one The locking of the valve (A) can cause the entire system to be completely locked, and at the same time, each external gas storage tank (cylinder) 57 is rigidly connected in the same direction. The advantage of this embodiment over the first embodiment is that the number of various pipelines is much reduced, the exposed pipeline parts are few, the structure is simple and reliable, the valve button and the ejector mechanism 55 and various needle valves, reversing valves or stop valves and gate valves, etc. The valve (A) has a compact structure, low cost, quick production and assembly, simple and easy on-site installation, and is easy to realize mass production.

It should be noted that the medium in the cylinder of the present invention can be various types of media used in the existing hydraulic, pneumatic, and gas spring technologies, including but not limited to oil, air, inert gas, water and other Any combination, and the storage cavity 88 in the external power cylinder or tank 57 is connected to the cylinder, so the medium in it should be the same as the cylinder, and the medium in the power chamber 99 can generally be used but not limited to existing gas springs The high-pressure gas or gas-oil mixture.

The parts not involved in the invention are the same as the prior art or can be realized by using the prior art.

Claims

An external cylinder or tank linkage synchronous lifting table based on the gas spring principle, which includes a table top (1) and a base (4), and is characterized in that the table top (1) is raised and lowered through at least two gas spring principles. The leg (3) is installed on the base (4). The lifting leg (3) is composed of a piston rod (77), a cylinder (33) and a power cylinder or tank (57). The power cylinder or tank (57) is powered by The piston (100) is divided into a storage cavity (88) and a power cavity (99); the rod cavity of one cylinder (33) is connected to the rodless cavity of the other cylinder (33), and at the same time it is connected to the driving power. The storage cavity (88) of the cylinder or tank (57) is connected, and the rod cavity of the last cylinder (33) is connected to the rodless cavity of the first cylinder (33) and at the same time is connected to the last power cylinder or tank. The storage chamber (88) of (57) is connected, and the high-pressure gas or gas-liquid mixture in the power chamber (99) of the power cylinder or tank (57) provides power for the table top lifting, and the high-pressure gas or gas-liquid mixture when the table goes down Compressed energy storage.
The external storage cylinder or tank linkage synchronous lifting table based on the gas spring principle according to claim 1, characterized in that the storage cavity (88) of the power cylinder or tank (57) passes through the pipe (6) and the cylinder body ( 33) is connected with the rod cavity; a control valve (A) is installed on the pipe connecting the rod cavity of one cylinder and the rodless cavity of the other cylinder, and each control valve (A) is controlled separately or installed on the desktop Under the control switch (18).
The external cylinder or tank linkage synchronous lifting table based on the gas spring principle according to claim 1, characterized in that the pistons in adjacent power cylinders or tanks (57) are connected by connecting rods so that the pistons can move synchronously. Ensure that the desktop is raised and lowered synchronously.
An external cylinder or tank linkage synchronous lifting table based on the gas spring principle, which includes a table top (1) and a base (4), and is characterized in that the table top (1) is raised and lowered through at least two gas spring principles. The leg (3) is installed on the base (4). The lifting leg (3) is composed of a piston rod (77), a cylinder (33) and a power cylinder or tank (57). The power cylinder or tank (57) is powered by The piston (100) is divided into a storage cavity (88) and a power cavity (99); the rod cavity and the rodless cavity of the cylinder (33) are connected by a shut-off valve, which is controlled by the installation on the piston rod (77) ), the top of the operating rod is installed with a shutter button (55); the storage cavity (88) of the cylinder or tank (57) that drives the piston rod ascends through the pipe (6) and the piston rod (77) The cavity where the control rod is installed is connected, and the lower end of the cavity is connected with the rod cavity of the cylinder (33). The adjacent power cylinder or tank (57) is used to separate the power chamber (99) and the storage chamber ( The piston of 88) is connected by a connecting rod to realize synchronous movement to ensure the synchronous lifting of the desktop; the high-pressure gas or high-pressure gas-liquid mixture in the power chamber (99) of the power cylinder or tank (57) provides power for the lifting of the desktop, when the desktop is lowered High-pressure gas or gas-liquid mixture compresses energy storage.
An external cylinder or tank linkage synchronous lifting table based on the gas spring principle, which includes a table top (1) and a base (4), and is characterized in that the table top (1) is raised and lowered through at least two gas spring principles. The leg (3) is installed on the base (4). The lifting leg (3) is composed of a piston rod (77), a cylinder (33) and a power cylinder or tank (57). The power cylinder or tank (57) is powered by The piston (100) is divided into a storage chamber (88) and a power chamber (99); the cylinder (33) is composed of an inner cylinder and an outer cylinder, the piston rod and the piston are installed in the inner cylinder, and the inner cylinder has a rod A normally open through hole is opened between the cavity and the outer cylinder, and a stop valve is installed between the rodless cavity of the inner cylinder and the outer cylinder to communicate the two. The outer cylinder is connected to the power cylinder or the power cylinder through the pipe (6). The storage chamber (88) of the tank (57) is connected, and the pistons in the adjacent power cylinders or tanks (57) for separating the power chamber (99) and the storage chamber (88) are connected by connecting rods to realize synchronous movement, To ensure that the desktop is synchronized up and down. The high-pressure gas or high-pressure gas-liquid mixture in the power chamber (99) of the power cylinder or tank (57) provides power for the desktop lifting, and the high-pressure gas or the gas-liquid mixture compresses energy when the desktop is lowered.
According to claim 1, 4 or 5, the external cylinder or tank linkage synchronous lifting table based on the principle of gas spring, characterized in that the piston rod (77) and the cylinder (33) are installed on a retractable table In the leg (2), the power cylinder or tank (57) is installed under the table top or installed inside the retractable table leg (2) and communicated with the rod cavity of the cylinder body (33) through an oil pipe.
The external cylinder or tank linkage synchronous lifting table based on the gas spring principle according to claim 1, 4 or 5, characterized in that the medium in the cylinder (33) is oil, water, oil-water mixture, gas Or oil-gas mixture, correspondingly, the medium stored in the storage chamber (88) of the power cylinder or tank (57) is also oil, water, oil-water mixture, gas or oil-gas mixture, the high-pressure chamber of the power cylinder or tank (57) The medium is a high-pressure gas or a high-pressure gas-liquid mixture whose pressure is higher than the pressure in the storage chamber (88).
According to claim 1, 4 or 5, the external cylinder or tank linkage synchronous lifting table based on the gas spring principle is characterized in that the power chambers (99) of adjacent power cylinders or tanks (57) are not connected Or connected through pipes.
The external cylinder or tank linkage synchronous lifting table based on the gas spring principle according to claim 1, 4 or 5, characterized in that the piston rods (77) of the lifting legs (3) are installed in the same direction or staggered. Same-direction installation means that the rod out direction of the piston rod is the same, and staggered installation means that the rod out direction of each piston rod is different.
According to claim 1, 4 or 5, the external cylinder or tank linkage synchronous lifting table based on the principle of gas spring is characterized in that an extended arm support (5) is installed on the piston rod (77), and the The arm rest (5) is connected with the desktop (1).