A sliding door hovering device and operating device

Abstract

This invention discloses a sliding door hovering device and an operating device, mainly relating to the field of sliding door hovering technology. The sliding door hovering device of this invention includes a door body; a guide mechanism, under the guidance of the guide mechanism, the door body slides; at least one set of magnetic balancing components, used to generate a frictional force between the door body and the guide mechanism opposite to the direction of the door's weight, or at least partially offset the frictional force of the door's weight, so that the door body is hovered at at least one position within its sliding stroke range; and an operating device, on which the above-described sliding door hovering device is mounted. This invention has a simplified structure and requires no power supply or maintenance. By using magnetic force instead of the lifting force provided by traditional mechanical power devices or electric drive devices, it avoids fatigue damage to the mechanical structure, which could lead to loss of hovering function, thereby improving hovering reliability. Furthermore, it requires no electricity or other energy drive; the door can be hovered at any position manually, reducing costs.

Description

Technical Field

[0001] This invention relates to the field of sliding door hovering technology, and more particularly to a sliding door hovering device and operating device. Background Technology

[0002] In the fields of biology, medicine, and pharmaceuticals, clean benches, biosafety cabinets, and cell culture equipment are widely used in operational scenarios requiring a localized clean environment, such as cell culture, microbial inoculation, and sterile preparation. These devices are typically equipped with a vertically lifting sliding door (viewing window door). The door opens to allow personnel to operate when it rises and closes when it falls to maintain an internal clean environment or protect the operator.

[0003] Currently, there are several main ways to achieve the arbitrary hovering of vertical sliding doors (i.e., the sliding door can be continuously stopped at any height within its sliding stroke):

[0004] (1) Counterweight balancing mechanism (steel wire rope + counterweight): This structure is the earliest and most widely used. The sliding door and the counterweight are connected by a steel wire rope. The weight of the counterweight counteracts the weight of the sliding door, so that the sliding door can be balanced in any position. Its advantages are that the structure is mature, but its disadvantages are: ① It requires a large counterweight space, which occupies the internal volume of the equipment; ② The steel wire rope will experience fatigue and wear after long-term use; ③ The system has many parts and the assembly is complicated; ④ The counterweight generates vibration and noise during the movement of the counterweight.

[0005] (2) Constant force spring balancing mechanism: A constant force spring assembly is connected to the top of the sliding door. The constant tension provided by the spring balances the weight of the sliding door, and the guide rail assembly provides guidance and damping. This type of structure overcomes the disadvantage of large size of the counterweight structure. However, the constant force spring has problems of spring fatigue and elasticity decay after long-term use, and the spring assembly itself has the potential for mechanical wear.

[0006] (3) Electromagnetic clutch + drive motor solution: The automatic raising and lowering of the window door is achieved by the motor driving the steel wire rope, and the electromagnetic clutch controls the on and off of the power. When the electromagnetic clutch is released, the window door can descend under the action of gravity. This solution is complex, costly, and requires continuous power supply, and is not a manual operation solution.

[0007] (4) Guide rail mechanical friction suspension: The sliding door is suspended by the friction between the guide rail and the slider, but the friction changes after long-term use, and the suspension reliability decreases.

[0008] (5) Magnetic levitation door technology: In recent years, sliding door solutions based on the principle of magnetic levitation have emerged, such as the magnetic air slider and magnetic levitation sliding door disclosed in Chinese patent CN120520483A, which utilizes the magnetic attraction force of permanent magnets and ferromagnetic longitude to achieve contactless levitation. This solution focuses on reducing the frictional resistance of the sliding door movement and is mainly applied to horizontal sliding doors, and has extremely high requirements for the precision of the guide rail; the levitation lifting sliding door disclosed in Chinese patent CN120906440A adopts a magnetic levitation block and track structure, and controls the levitation and locking of the sliding door through a driving component. However, these solutions all require additional driving and control devices and cannot achieve arbitrary position suspension under purely manual operation.

[0009] In summary, existing technologies for achieving arbitrary hovering of vertical sliding doors either rely on complex counterweight or spring systems that suffer from mechanical wear, or on electromagnetic / drive devices that require continuous power supply. There is a lack of a solution that is structurally simple, completely power-free, maintenance-free, purely mechanical and manual, and can maintain hovering reliability over a long period of time. Summary of the Invention

[0010] The purpose of this invention is to provide a sliding door hovering device and an operating device, which enables the sliding door to be stably hovered at any position.

[0011] The objective of this invention is achieved through the following technical solution:

[0012] A sliding door hovering device, comprising:

[0013] Door body;

[0014] A guide mechanism is provided, wherein the door body is slidably mounted on the guide mechanism and slides under the guidance of the guide mechanism;

[0015] At least one set of magnetic balancing components, which are disposed on the door body and / or the guide mechanism, are used to generate a frictional force between the door body and the guide mechanism that is opposite to the direction of the door's weight or at least partially counteracts the frictional force of the door's weight, so that the door body is suspended at at least one position within its sliding stroke range.

[0016] Furthermore, each set of magnetic balancing components includes at least one set of first permanent magnet components and second permanent magnet components. The first permanent magnet components are disposed on the door body, and the second permanent magnet components are disposed on the guide mechanism. The magnetic poles of the first permanent magnet components and the second permanent magnet components are arranged in a manner of like poles repulsion. The magnetic repulsion force generated by the two causes a frictional force between the door body and the guide mechanism that is opposite to the weight of the door body.

[0017] Furthermore, the guiding mechanism includes at least one slide rail, the door body has a first side and a second side opposite to each other along the thickness direction, the slide rail has a first inner side and a second inner side opposite to each other, the first side of the door body is opposite to the first inner side of the slide rail, and the second side of the door body is opposite to the second inner side of the slide rail, the first permanent magnet assembly and the second permanent magnet assembly each include a plurality of permanent magnets, and the permanent magnets of the first permanent magnet assembly and the second permanent magnet assembly are arranged in a Halbach array, the plurality of permanent magnets of the first permanent magnet assembly are disposed on the first side of the door body, and the plurality of permanent magnets of the second permanent magnet assembly are disposed on the first inner side of the slide rail.

[0018] Furthermore, a plurality of permanent magnets in the second permanent magnet assembly are L-shaped sheet structures and attached to the first inner surface of the slide rail; and / or,

[0019] The second side of the door body contacts the second inner side of the slide rail and generates friction.

[0020] Furthermore, the door body also includes opposing first and second sides, and the guide mechanism also includes a slider or roller that slides in cooperation with the slide rail, the slider or roller being disposed on the first and / or second sides of the door body.

[0021] Furthermore, the guiding mechanism also includes a fine-tuning component, which includes:

[0022] A plurality of fine-adjusting bolts are provided on the slide rail, and one end of the screw of the fine-adjusting bolt is threadedly connected to the slide rail and extends through the slide rail to the second side of the slide rail;

[0023] A pressure plate is disposed at one end of the fine-tuning bolt extending to the second side of the slide rail, and the pressure plate is rotatably connected to the fine-tuning bolt.

[0024] Furthermore, the guiding mechanism also includes an elastic component, the elastic component comprising:

[0025] A plurality of constant force springs, one end of which is disposed on the pressure plate, or the plurality of constant force springs are disposed on the second inner side surface of the slide rail;

[0026] A movable plate is disposed at the end of the constant force spring away from the pressure plate, and is used to contact the second side of the door body and generate friction.

[0027] Furthermore, within the sliding stroke range of the door body, the absolute value of the magnetic force change rate of the magnetic balancing component is no greater than 15%; and / or,

[0028] The door body is in a state of force balance or close to a state of balance at any position within its sliding stroke range; and / or,

[0029] The sliding direction of the door is parallel to the direction of gravity.

[0030] An operating device, wherein the operating device is provided with the sliding door suspension device as described above.

[0031] Furthermore, the operating device is one of a clean bench, a biosafety cabinet, or a portable, ready-to-use cell chamber.

[0032] Compared with the prior art, the beneficial effects of the present invention include at least the following:

[0033] By applying magnetic force to the door body through a magnetic balancing component, a frictional force is generated between the door body and the guide mechanism that cancels out the weight of the sliding door. This allows the door body to hover at any position within its sliding stroke range. The structure is simplified and requires no power supply or maintenance. By replacing the lifting force provided by traditional mechanical power devices or electric drive devices with magnetic force, fatigue damage to the mechanical structure and loss of hovering function can be avoided, thereby improving hovering reliability. In addition, no electricity or other energy drive is required; the door body can be hovered at any position manually, reducing costs.

[0034] Furthermore, the sliding door suspension device of the present invention will not generate particulate impurities due to wear and tear from prolonged mechanical back-and-forth operation during use, and can be applied to equipment with high cleanliness requirements, such as clean benches, biosafety cabinets, or portable ready-to-use cell chambers. Attached Figure Description

[0035] Figure 1 This is a three-dimensional structural schematic diagram of a sliding door suspension device according to Embodiment 1 of the present invention;

[0036] Figure 2 This is a three-dimensional structural diagram of Embodiment 1 of the present invention when it is configured as a double sliding door;

[0037] Figure 3 This is a partial cross-sectional structural schematic diagram of the sliding door suspension device according to Embodiment 1 of the present invention;

[0038] Figure 4 This is a schematic diagram of the cross-sectional structure at the first side when the fine-tuning component is provided in Embodiment 1 of the present invention;

[0039] Figure 5 This is a schematic diagram of a partial cross-sectional structure at the first side in Embodiment 2 of the present invention;

[0040] Figure 6 This is a schematic diagram of a partial cross-sectional structure at the first side in Embodiment 3 of the present invention.

[0041] In the diagram: 1. Door body; 101. First side; 102. Second side; 103. First side edge; 104. Second side edge; 2. First permanent magnet assembly; 3. Second permanent magnet assembly; 4. Slide rail; 401. First inner side; 402. Second inner side; 5. Elastic assembly; 501. Constant force spring; 502. Movable plate; 6. Fine-tuning assembly; 601. Fine-tuning bolt; 602. Pressure plate. Detailed Implementation

[0042] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided to make the invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0043] The terms used to express position and direction in this invention are illustrated with reference to the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this invention.

[0044] Example 1

[0045] refer to Figures 1 to 4 This embodiment provides a sliding door suspension device, including a door body 1, a guide mechanism, and at least one set of magnetic balancing components.

[0046] The door body 1 is slidably mounted on the guide mechanism and slides under the guidance of the guide mechanism. Within the sliding stroke range of the door body 1, the absolute value of the magnetic force change rate of the magnetic force balancing component is no more than 15%, so that the force-displacement curve of the magnetic force balancing component is flattened within the sliding stroke range of the door body 1. The door body 1 is in a force balance state or close to a balance state at any position within its sliding stroke range. The sliding direction of the door body 1 is parallel to the direction of gravity. The sliding direction of the door body 1 can also be at a certain angle to the direction of gravity, such as 20°, 45°, 60°, or 80°. When the sliding direction of the door body 1 is not parallel to the direction of gravity (the second side 102 of the door body 1 must be facing upwards), part of the magnetic force generated by the magnetic force balancing component is used to offset part of the gravity of the door body 1, and part of it is used to generate a frictional force between the door body 1 and the guide mechanism that is opposite to the gravity of the door body 1, so as to offset the remaining gravity of the door body 1.

[0047] A magnetic balancing assembly is disposed on the door body 1 and / or the guide mechanism to generate a frictional force between the door body 1 and the guide mechanism that is opposite to the direction of the gravity of the door body 1 or at least partially counteracts the frictional force of the gravity of the door body 1, so that the door body 1 is suspended at at least one position within its sliding stroke range.

[0048] In a preferred embodiment, each set of magnetic balancing components may include at least one set of first permanent magnet component 2 and second permanent magnet component 3. The first permanent magnet component 2 is disposed on the door body 1, and the second permanent magnet component 3 is disposed on the guide mechanism. The magnetic poles of the first permanent magnet component 2 and the second permanent magnet component 3 are arranged in a manner of like poles repulsion. The magnetic repulsion force generated by the two causes a frictional force opposite to the gravity of the door body 1 to be generated between the door body 1 and the guide mechanism.

[0049] In a preferred embodiment, the guide mechanism includes at least one slide rail 4. The door body 1 has a first side 101 and a second side 102 facing each other. The first side 101 and the second side 102 are two sides facing each other in the thickness direction of the door body 1. The slide rail 4 has a first inner side 401 and a second inner side 402 facing each other. The cross-section of the slide rail 4 along the direction perpendicular to its length can be U-shaped. The first inner side 401 and the second inner side 402 are two sides other than the bottom surface of the U-shaped structure. The first side 101 of the door body 1 is opposite to the first inner side 401 of the slide rail 4, and the second side 102 of the door body 1 is opposite to the second inner side 402 of the slide rail 4.

[0050] Both the first permanent magnet assembly 2 and the second permanent magnet assembly 3 include several permanent magnets, and the permanent magnets of both the first permanent magnet assembly 2 and the second permanent magnet assembly 3 can be arranged in a Halbach array. The Halbach array is a special permanent magnet structure that enhances the magnetic field on one side and cancels it on the other side through a specific arrangement, forming a unilateral magnetic field. Its design goal is to achieve the maximum magnetic field strength with the minimum amount of magnets. Its structure is divided into cylindrical and linear / planar types. The cylindrical type is composed of trapezoidal or arc-shaped magnetic segments, and the linear structure is installed on a ferromagnetic back plate. The magnetic field distribution shows a periodic change. This structure can achieve a central magnetic field strength of up to 1.04T by superimposing and interfering permanent magnets with different magnetization directions, and has multipolar magnetic field characteristics. The strong magnetic surfaces of the first permanent magnet assembly 2 and the second permanent magnet assembly 3 are arranged opposite each other, which generates a stronger magnetic force than the ordinary sequential arrangement of magnets, thus making it suitable for hovering of heavier sliding doors. Magnetic conductive materials (such as iron cores) can also be added between the permanent magnets to further enhance the magnetic force between the permanent magnets in the Halbach array arrangement. Several permanent magnets of the first permanent magnet assembly 2 can be set on the first side 101 of the door body 1, and several permanent magnets can be arranged along the sliding direction of the door body 1. Several permanent magnets of the second permanent magnet assembly 3 can be set on the first inner side 401 of the slide rail 4, and several permanent magnets can be arranged along the sliding direction of the door body 1.

[0051] The door body 1 also includes a first side 103 and a second side 104, which are two opposite sides in the width direction of the door body 1. The height direction of the door body 1 can be consistent with the sliding direction of the door body 1. In this embodiment, the guide mechanism includes two slide rails 4. The first side 103 and the second side 104 of the door body 1 are respectively provided with a slide rail 4, and a second permanent magnet assembly 3 is provided on each slide rail 4.

[0052] The guiding mechanism may also include a slider or roller (not shown in the figure) that slides in cooperation with the slide rail 4. The slider or roller may be set on the first side 103 and / or the second side 104 of the door body 1. The slide rail 4 cooperates with the slider or roller to reduce the friction between the side of the door body 1 and the slide rail 4, and maximize the friction force that overcomes the gravity of the door body 1 by the magnetic repulsion force generated by the magnetic balance component, thereby facilitating a more accurate selection of the magnetic balance component with suitable magnetic force.

[0053] As a preferred embodiment, a plurality of permanent magnets of the second permanent magnet assembly 3 can be in the form of an L-shaped sheet structure and attached to the first inner side 401 of the slide rail 4, which is beneficial to reduce the overall volume of the suspension device. The second side 102 of the door body 1 contacts the second inner side 402 of the slide rail 4 and generates friction.

[0054] The sliding door hovering device of this invention applies magnetic force to the door body 1 through a magnetic balancing component, thereby generating a frictional force between the door body 1 and the guide mechanism that cancels out the weight of the sliding door body 1. This allows the door body 1 to hover at any position within its sliding stroke range. The structure is simplified and requires no power supply or maintenance. By using magnetic force instead of the lifting force provided by traditional mechanical power devices or electric drive devices, fatigue damage to the mechanical structure and loss of hovering function can be avoided, thus improving hovering reliability. In addition, no electricity or other energy drive is required; the door body 1 can be hovered at any position manually, reducing costs.

[0055] In this embodiment of the invention, a fine-tuning component 6 may also be provided at the position of the second inner surface 402 of the slide rail 4, such as... Figure 4 The distance between the door body 1 and the first inner side 401 of the slide rail 4 is adjusted by turning the fine-tuning bolt 601, thereby adjusting the magnetic force between the first permanent magnet assembly 2 and the second permanent magnet assembly 3.

[0056] like Figure 2 The sliding door suspension device of the present invention can also be configured as a parallel double slide rail 4, with the two sliding doors opening and closing vertically (in this case, the fine adjustment component 6 can only be set at the outer sliding door).

[0057] Example 2

[0058] like Figure 5This embodiment provides a sliding door suspension device that, compared to embodiment 1, adds an elastic component 5, thereby creating a different way of generating friction between the door body 1 and the guide mechanism compared to embodiment 1. All other structural aspects remain the same. Specifically, the guide mechanism may also include the elastic component 5. The elastic component 5 may include several constant force springs 501 and a movable plate 502.

[0059] Several constant force springs 501 are disposed on the second inner surface 402 of the slide rail 4. The constant force spring 501 is a spring element that can provide almost constant force during the stretching process, also called a constant tension spring. The stretching direction of the constant force spring 501 is consistent with the thickness direction of the door body 1. One end of the constant force spring 501 is fixed on the second inner surface 402 of the slide rail 4, and the other end of the constant force spring 501 is fixed on the movable plate 502.

[0060] The movable plate 502 is located at the end of the constant force spring 501 away from the pressure plate 602, and is used to contact the second side 102 of the door body 1 and generate friction. Under the action of the constant force spring 501, the movable plate 502 applies pressure to the door body 1, thereby increasing the friction between the door body 1 and the movable plate 502. Combined with the pressure applied to the door body 1 by the permanent magnet assembly between the first side 101 of the door body 1 and the first inner side 401 of the slide rail 4, the sliding door suspension device provided in this embodiment can be applied to the suspension of sliding doors with greater weight, and has a wider range of applications.

[0061] Example 3

[0062] like Figure 6 The sliding door suspension device provided in this embodiment adds a fine-tuning component 6 compared with embodiment 2, while the other structures are the same. Specifically, the guide mechanism may also include the fine-tuning component 6, which may include several fine-tuning bolts 601 and pressure plates 602.

[0063] Several fine-tuning bolts 601 are provided on the slide rail 4. One end of the screw of the fine-tuning bolt 601 is threadedly connected to the slide rail 4 and extends through the slide rail 4 to the second side 102 of the slide rail 4.

[0064] The pressure plate 602 is located at one end of the fine-tuning bolt 601 extending to the second side 102 of the slide rail 4, and the pressure plate 602 is rotatably connected to the fine-tuning bolt 601. Several constant force springs 501 are located on the pressure plate 602 at one end away from the movable plate 502.

[0065] The sliding door suspension device provided in this embodiment allows for the adjustment of the position of the pressure plate 602 by turning the fine-tuning bolt 601. This allows the pressure plate 602 to move back and forth along the thickness direction of the door body 1, thereby driving the pressure plate 602 to move back and forth. The position of the pressure plate 602 can be adjusted by turning the fine-tuning bolt 601, thereby adjusting the distance between the pressure plate 602 and the movable plate 502, or the distance between the first side 101 of the door panel and the first inner side 401 of the slide rail 4. This, in turn, adjusts the pressure applied by the constant force spring 501 to the movable plate 502, or the magnetic force between the first permanent magnet assembly 2 and the second permanent magnet assembly 3. This adjusts the friction force (i.e., the resistance when the door body 1 slides up and down) between the door body 1 and the movable plate 502. Furthermore, this can compensate for manufacturing errors. In use, the resistance when the door body 1 slides up and down can also be adjusted according to actual usage conditions (such as the feel of opening and closing the door).

[0066] Example 4

[0067] This embodiment provides an operating device, which is equipped with a sliding door suspension device as described in Embodiment 1, Embodiment 2 or Embodiment 3. The operating device can be one of a clean bench, a biosafety cabinet or a portable ready-to-use cell chamber.

[0068] When the operating device of this invention is in use, the sliding door will not generate particulate impurities (such as particles generated by the wear of steel wire rope, volatilization of spring grease, etc.) due to long-term back-and-forth operation when opening and closing, thus meeting the operational requirements with high cleanliness requirements.

[0069] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the invention without departing from the principles and spirit of the invention, and all such changes should fall within the protection scope of the claims of the present invention.

Claims

1. A sliding door hovering device, characterized in that, include: Door body (1); A guiding mechanism, wherein the door body (1) is slidably disposed on the guiding mechanism and slides under the guiding action of the guiding mechanism; At least one set of magnetic balancing components, which are disposed on the door body (1) and / or the guide mechanism, are used to generate a frictional force between the door body (1) and the guide mechanism that is opposite to the direction of the gravity of the door body (1) or at least partially counteracts the frictional force of the gravity of the door body (1), so that the door body (1) is suspended at at least one position within its sliding stroke range.

2. A sliding door hovering device as described in claim 1, characterized in that, Each set of magnetic balancing components includes at least one set of first permanent magnet component (2) and second permanent magnet component (3). The first permanent magnet component (2) is disposed on the door body (1), and the second permanent magnet component (3) is disposed on the guide mechanism. The magnetic poles of the first permanent magnet component (2) and the second permanent magnet component (3) are arranged in a repulsive manner. The magnetic repulsion force generated by the two causes the door body (1) and the guide mechanism to generate a frictional force opposite to the gravity of the door body (1).

3. A sliding door hovering device as described in claim 2, characterized in that, The guiding mechanism includes at least one slide rail (4). The door body (1) has a first side (101) and a second side (102) opposite each other along the thickness direction. The slide rail (4) has a first inner side (401) and a second inner side (402) opposite each other. The first side (101) of the door body (1) is opposite to the first inner side (401) of the slide rail (4), and the second side (102) of the door body (1) is opposite to the second inner side (402) of the slide rail (4). The first permanent magnet assembly (2) and the second permanent magnet assembly (3) each include a plurality of permanent magnets. The permanent magnets of the first permanent magnet assembly (2) and the second permanent magnet assembly (3) are arranged in a Halbach array. A plurality of permanent magnets of the first permanent magnet assembly (2) are disposed on the first side (101) of the door body (1), and a plurality of permanent magnets of the second permanent magnet assembly (3) are disposed on the first inner side (401) of the slide rail (4).

4. A sliding door hovering device as described in claim 3, characterized in that, The second permanent magnet assembly (3) comprises several permanent magnets in an L-shaped sheet structure attached to the first inner surface (401) of the slide rail (4); and / or, The second side (102) of the door body (1) contacts the second inner side (402) of the slide rail (4) and generates friction.

5. A sliding door hovering device as described in claim 3, characterized in that, The door body (1) also includes a first side (103) and a second side (104) opposite to each other. The guide mechanism also includes a slider or roller that slides in cooperation with the slide rail (4). The slider or roller is disposed on the first side (103) and / or the second side (104) of the door body (1).

6. A sliding door hovering device as described in claim 3, characterized in that, The guiding mechanism further includes an elastic component (5), the elastic component (5) comprising: A plurality of constant force springs (501), one end of which is disposed on the second inner side (402) of the slide rail (4); The movable plate (502) is disposed at one end of the constant force spring (501) away from the second inner side (402) of the slide rail (4) for contacting the second side (102) of the door body (1) and generating friction.

7. A sliding door hovering device as described in claim 6, characterized in that, The guiding mechanism further includes a fine-tuning component (6), which includes: A plurality of fine-tuning bolts (601) are provided on the slide rail (4). One end of the screw of the fine-tuning bolt (601) is threadedly connected to the slide rail (4) and extends through the slide rail (4) to the second side (102) of the slide rail (4). A pressure plate (602) is disposed at one end of the fine-tuning bolt (601) extending to the second side (102) of the slide rail (4), and the pressure plate (602) is rotatably connected to the fine-tuning bolt (601); and / or, The ends of the plurality of constant force springs (501) away from the movable plate (502) are disposed on the pressure plate (602).

8. A sliding door hovering device as described in claim 1, characterized in that, Within the sliding stroke range of the door body (1), the absolute value of the magnetic force change rate of the magnetic force balancing component is not greater than 15%; and / or, The door (1) is in a state of force balance or close to a state of balance at any position within its sliding stroke range; and / or, The sliding direction of the door (1) is parallel to the direction of gravity.

9. An operating device, characterized in that, The operating device is equipped with a sliding door suspension device as described in any one of claims 1-8.

10. An operating device as described in claim 9, characterized in that, The operating device is one of a clean bench, a biosafety cabinet, or a portable, ready-to-use cell chamber.

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