Gap-adjustable mechanical lifting structure suitable for interior carrier

Abstract

The gap-adjustable mechanical lifting structure comprises an air spring, a sliding lifting assembly, a fixed sliding block, a locking rod, a control mechanism, a top plate, a middle plate and a bottom plate, the middle plate is arranged at the lower end of the sliding lifting assembly, and the upper end and the lower end of the air spring are hinged to the middle plate and the bottom plate correspondingly; the sliding lifting assembly is slidably connected to the fixed sliding block, the upper end of the sliding lifting assembly is fixedly connected with the top plate, the upper end and the lower end of the locking rod are rotationally connected with the middle plate and the top plate respectively, the locking rod penetrates through a middle hole of the fixed sliding block, a limiting hole is formed in the side edge of the middle hole, and a limiting block is arranged on the side wall of the locking rod. The control mechanism is connected with the locking rod, an upper limiting structure and a lower limiting structure are arranged between the fixed sliding block and the top plate and between the fixed sliding block and the middle plate respectively, and the upper limiting structure and the lower limiting structure can vertically adjust the fit clearance between the fixed sliding block and the top plate and the fit clearance between the fixed sliding block and the middle plate. The lifting adjustment is simple and convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical lifting adjustment, and particularly relates to an adjustable-gap mechanical lifting structure applicable to interior carriers. Background Art

[0002] In airplanes, high-speed trains, business cars, ships or customized mobile spaces, in order to provide a comfortable interior environment, interior carriers such as desks, coffee tables, seats, or bars are usually provided for use. When they are moving forward and encounter an emergency braking or braking situation, due to inertia, there is a tendency for people's heads to collide forward with the front interior carrier, posing a safety hazard. Therefore, the interior carrier needs to be set as a structure that can be adjusted up and down.

[0003] However, in these special requirement scenarios, there are limitations in terms of electrical load and extremely special environments. It is difficult to implement an electric lifting structure. To solve the lifting problem, a mechanical lifting structure is usually adopted. The mechanical lifting structure has higher reliability, relatively lower cost, does not require an external power supply, can be used for a long time without being restricted by special environments, whether it is high or low temperature, humid or dry, and can adjust the height of the interior carrier according to different working conditions, such as lifting desks, lifting coffee tables, lifting seats, and lifting bars.

[0004] Currently, there are mainly two types of mechanical lifting structures on the market:

[0005] The first type is a hand-cranked type. The core components are a spiral screw rod and a nut that cooperates with it. By turning the hand crank, the screw rod is driven to move axially, thereby performing hand-cranked lifting adjustment on the interior carrier. The tight fit between the screw rod and the nut ensures the accuracy and tightness of the lifting process.

[0006] The second type is a pneumatic type. It uses a gas spring to achieve the lifting work. The gas spring is filled with high-pressure gas (usually nitrogen), and the supporting force is provided by the telescopic movement of the piston rod. An unlocking device is provided on the gas spring, and when the unlocking device is pressed, the piston rod is unlocked to complete the lifting.

[0007] However, the above two types of mechanical lifting structures on the market have the following defects:

[0008] For the first hand-cranked type of mechanical lifting structure, its operation is time-consuming and laborious. When there is a certain load, a large amount of force is required, the lifting speed is slow, it is difficult to achieve precise positioning by hand-cranking operation, and due to the discontinuous hand-cranking operation, there will be bumps and unevenness during the operation process.

[0009] For the second pneumatic mechanical lifting structure, the lifting speed is moderate. Over time, when the gas in the gas spring leaks partially due to long-term use, resulting in a weakened supporting force, there will be a certain amount of play in the gas spring, causing pauses or sliding phenomena at the highest or lowest positions, which affects the use of the interior carrier. And the adjustment of the play of the gas spring can only be achieved by adjusting the gas filling amount of the gas spring, which requires professional gas filling tools and is complex and time-consuming to adjust. Summary of the Invention

[0010] The object of the present invention is to provide an adjustable clearance mechanical lifting structure applicable to an interior carrier, and its lifting adjustment is simple and convenient.

[0011] The object of the present invention is achieved by the following technical solutions:

[0012] An adjustable clearance mechanical lifting structure applicable to an interior carrier, characterized in that it includes a gas spring, a sliding lifting component, a fixed slider, a locking rod, a control mechanism, a top plate, an intermediate plate and a bottom plate. The intermediate plate is arranged at the lower end of the sliding lifting component. The upper and lower ends of the gas spring are respectively hinged to the intermediate plate and the bottom plate. The fixed slider is fixedly arranged, and the sliding lifting component is slidably connected to the fixed slider. The upper end of the sliding lifting component is fixedly connected to the top plate. The upper and lower ends of the locking rod are respectively rotatably connected to the intermediate plate and the top plate. The locking rod passes through the middle hole of the fixed slider. A limiting hole is arranged on the side of the middle hole, and a limiting block is arranged on the side wall of the locking rod. The control mechanism is connected to the locking rod; the locking rod can be driven to rotate through the control mechanism, so that the limiting block is aligned or staggered with the limiting hole up and down. When the limiting block is aligned with the limiting hole up and down, the limiting block can pass through the limiting hole; an upper limiting structure and a lower limiting structure are respectively arranged between the fixed slider and the top plate and between the fixed slider and the intermediate plate, and the upper limiting structure and the lower limiting structure can adjust the fitting clearance between the fixed slider and the top plate and between the fixed slider and the intermediate plate up and down.

[0013] A further technical solution of the present invention is that the control mechanism includes a control handle, a steel cable, a spring piece and a spring. The control handle is installed on the top plate. One end of the spring piece is fixedly connected to the locking rod, and the other end extends horizontally to the outer end of the side of the locking rod. The spring is connected to the outer end of the spring piece. The two ends of the steel cable are respectively connected to the control handle and the outer end of the spring piece. Operating the control handle can pull the outer end of the spring piece to rotate through the steel cable. The force exerted by the control handle on the outer end of the spring piece through the steel cable is opposite to the force exerted by the spring on the outer end of the spring piece.

[0014] A further technical solution of the present invention is that the control handle includes a fixed part and a movable part. The fixed part is fixedly installed on the top plate. The movable part is hinged to the fixed part. A connecting plate is arranged on the movable part. The end of the steel cable passes through the first through hole of the fixed part and is fixedly connected to the connecting plate.

[0015] A further technical solution of the present invention is that the upper limit structure includes a top block and a convex platform that are aligned up and down. The top block is arranged below the top plate and can be adjusted up and down, and the convex platform is fixedly arranged above the fixed slider.

[0016] A further technical solution of the present invention is that a screw rod extending downward is provided on the top plate, and the top block is threadedly connected to the screw rod through a threaded hole at the upper end.

[0017] A further technical solution of the present invention is that the lower limit structure includes an adjusting fastener, and the adjusting fastener is threadedly connected to a threaded hole below the fixed slider, and the lower surface of the adjusting fastener is used to abut against the upper surface of the intermediate plate.

[0018] A further technical solution of the present invention is that a through hole is provided on the intermediate plate, and the position of the through hole is aligned with the adjusting fastener up and down.

[0019] A further technical solution of the present invention is that the mechanical lifting structure further includes a fixed sleeve, the fixed sleeve is sleeved on the periphery, the lower end of the fixed sleeve is fixedly connected to the bottom plate, and the upper end of the fixed sleeve is fixedly connected to the fixed slider.

[0020] A further technical solution of the present invention is that the mechanical lifting structure further includes a movable sleeve, the movable sleeve is nested with the upper end of the fixed sleeve, and the upper end of the movable sleeve is fixedly connected to the top plate.

[0021] A further technical solution of the present invention is that the sliding lifting assembly includes a slide rod, a slide hole is provided on the fixed slider, the slide rod passes through the slide hole, and the upper and lower ends of the slide rod are respectively fixedly connected to the top plate and the intermediate plate.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention realizes unlocking and locking the mechanical lifting structure at a high or low position by controlling the rotation of the locking rod. The structure is simple, the operation is simple, and the manufacturing precision requirements for the structure are relatively low. Moreover, the upward force of the present invention is provided by the gas spring, and when descending, buffering can be achieved through the gas spring at the same time, and the lifting speed is moderate.

[0024] 2. The present invention is provided with an upper limit structure and a lower limit structure to realize the adjustment of the fitting clearance. When part of the gas in the gas spring leaks due to long-term use, resulting in a weakening of the supporting force and a certain amount of play, the problem of play can be directly solved by adjusting the upper limit structure and the lower limit structure, rather than by adjusting the inflation amount of the gas spring, and the adjustment is convenient and fast.

[0025] 3. The present invention solves the problems that the existing mechanical lifting structure is time-consuming and laborious during the lifting process, the lifting speed is slow and unstable, the adjustment process is cumbersome and it is difficult to reach the ideal state, and there are often problems such as too large adjustment clearance or play. Description of the Drawings

[0026] Figure 1 It is one of the structural schematic diagrams of the interior trim carrier provided with two sets of the mechanical lifting structures of the embodiments of the present invention. One set of the mechanical lifting structures hides the fixed sleeve and the movable sleeve.

[0027] Figure 2 It is the second of the structural schematic diagrams of the interior trim carrier provided with two sets of the mechanical lifting structures of the embodiments of the present invention. One set of the mechanical lifting structures hides the fixed sleeve and the movable sleeve.

[0028] Figure 3 It is one of the partial structural schematic diagrams of the mechanical lifting structure of the embodiments of the present invention, and it is at the lowest position at this time.

[0029] Figure 4 It is the second of the partial structural schematic diagrams of the mechanical lifting structure of the embodiments of the present invention, and it is at the lowest position at this time.

[0030] Figure 5 It is the third of the partial structural schematic diagrams of the mechanical lifting structure of the embodiments of the present invention, and it is at the highest position at this time.

[0031] Figure 6 It is the fourth of the partial structural schematic diagrams of the mechanical lifting structure of the embodiments of the present invention, and it is at the highest position at this time.

[0032] Figure 7 It is the structural schematic diagram at the upper limit position structure of the mechanical lifting structure of the embodiments of the present invention.

[0033] Figure 8 It is the structural schematic diagram after splitting at the top block of the mechanical lifting structure of the embodiments of the present invention.

[0034] Meanings of the reference numerals in the figure:

[0035] 1 - Top plate; 2 - Bottom plate; 3 - Intermediate plate; 3.1 - Through hole; 4 - Slide bar; 5 - Locking rod; 5.1 - Limit block; 6 - Control handle; 6.1 - Fixed part; 6.2 - First through hole; 6.3 - Movable part; 6.4 - Connecting plate; 7 - Gas spring; 7.1 - Hinge ear; 8 - Fixed sleeve; 9 - Movable sleeve; 10 - Fixed slider; 10.1 - Intermediate hole; 10.2 - Limit hole; 10.3 - Boss; 11 - Cable limit member; 11.1 - Second through hole; 12 - Cable; 13 - Spring; 14 - Spring piece; 15 - Pin shaft; 16 - Adjusting fastener; 17 - Support plate; 18 - Bearing; 19 - Second locking nut; 20 - First locking nut; 21 - Top block; 22 - Screw rod; 23 - Fork. Detailed implementation manners

[0036] The present invention will be further described below in conjunction with embodiments.

[0037] In the description of the present invention, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0038] In the description of the present invention, the meaning of several is one or more, the meaning of multiple is more than two, and understandings such as greater than, less than, exceeding, etc. do not include the recited number, and understandings such as above, below, within, etc. include the recited number. If the first and second are described, it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0039] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0040] Embodiment:

[0041] As Figures 1 to 8 shown is the adjustable clearance mechanical lifting structure applicable to the interior carrier of this embodiment, which includes a gas spring 7, a sliding lifting assembly, a fixed slider 10, a locking rod 5, a control mechanism, a top plate 1, an intermediate plate 3, a bottom plate 2, a fixed sleeve 8 and a movable sleeve 9.

[0042] In this embodiment, the top plate 1 and the bottom plate 2 of the mechanical lifting structure listed are applicable to inside an aircraft. The bottom plate 2 can be fixed on the fixed rail inside the aircraft, and the top plate 1 is a tabletop for placing items, and a tabletop can also be further provided on the top plate 1.

[0043] As Figure 3 and Figure 4 shown, the intermediate plate 3 of this embodiment is a triangular flat plate. The sliding lifting assembly includes three sliding rods 4, and the three sliding rods 4 are evenly distributed on a circumference. The fixed slider 10 is correspondingly provided with three sliding holes, and the sliding rods 4 pass through the sliding holes to realize the sliding connection between the fixed slider 10 and the sliding rods 4. A support plate 17 is provided at the upper end of the sliding rod 4, and the support plate 17 is fixedly connected to the lower surface of the top plate 1 by screws. The lower end of the sliding rod 4 is fixedly connected to the intermediate plate 3 by screws.

[0044] The upper and lower ends of the gas spring 7 are respectively hinged to the middle plate 3 and the bottom plate 2. The specific structure of the hinge is as follows: fork ears 23 are respectively provided on the middle plate 3 and the bottom plate 2, hinge ears 7.1 are respectively provided at the upper and lower ends of the gas spring 7, and the fork ears 23 and the hinge ears 7.1 are connected together by a pin shaft 15. During the use of the mechanical lifting structure, when rising, the gas spring 7 provides the lifting force, and when descending, the gas spring 7 can achieve buffering, and the lifting and lowering speeds are moderate.

[0045] The fixed sleeve 8 is sleeved on the outside. The lower end of the fixed sleeve 8 is fixedly connected to the bottom plate 2, and the upper end of the fixed sleeve 8 is fixedly connected to the side wall of the fixed slider 10 by screws, so as to realize the fixed setting of the fixed slider 10. During use, the position between the fixed slider 10 and the bottom plate 2 is relatively fixed. The movable sleeve 9 is nested with the upper end of the fixed sleeve 8. The upper end of the movable sleeve 9 is fixedly connected to the top plate 1. The movable sleeve 9 rises together with the top plate 1, and the movable sleeve 9 hides the upper part of the mechanical lifting structure inside.

[0046] The locking rod 5 is located in the middle of the sliding lifting assembly. The upper and lower ends of the locking rod 5 are respectively rotationally connected to the middle plate 3 and the top plate 1 through conventional bearings 18. A middle hole 10.1 is provided in the middle of the fixed slider 10, a limiting hole 10.2 is provided on the side of the middle hole 10.1, the locking rod 5 passes through the middle hole 10.1, and a limiting block 5.1 is provided on the side wall of the locking rod 5. The limiting block 5.1 is in a strip shape and extends along the axial direction of the locking rod 5. Rotating the locking rod 5 can make the limiting block 5.1 align or stagger with the limiting hole 10.2 up and down. When the limiting block 5.1 aligns with the limiting hole 10.2 up and down, the limiting block 5.1 can pass through the limiting hole 10.2.

[0047] The control mechanism of this embodiment includes a control handle 6, a steel cable 12, a spring piece 14 and a spring 13. The control handle 6 is installed under the top plate 1. One end of the spring piece 14 is fixedly connected to the locking rod 5 by screws, and the other end extends horizontally to the outer end on the side of the locking rod 5. One end of the spring 13 is fixedly connected to the outer end of the spring piece 14, and the other end is fixedly connected to the bottom of the top plate 1. The two ends of the steel cable 12 are respectively fixedly connected to the control handle 6 and the outer end of the spring piece 14. Operating the control handle 6 can pull the outer end of the spring piece 14 to rotate through the steel cable 12, thereby driving the locking rod 5 to rotate. The force exerted by the control handle 6 on the outer end of the spring piece 14 through the steel cable 12 is opposite to the force exerted by the spring 13 on the outer end of the spring piece 14. The spring 13 realizes the reset of the spring piece 14, that is, the reset of the locking rod 5.

[0048] Below the top plate 1, there is a steel cable stopper 11. The steel cable stopper 11 is fixedly installed at the upper end of the movable sleeve 9. The steel cable stopper 11 is close to the spring piece 14. The steel cable stopper 11 is provided with a second through hole 11.1. The second through hole 11.1 faces the outer end of the spring piece 14. The steel cable 12 passes through the second through hole 11.1 and is fixedly connected to the outer end of the spring piece 14.

[0049] The control handle 6 of this embodiment includes a fixed part 6.1 and a movable part 6.3. The fixed part 6.1 is fixedly installed below the top plate 1 by screws. A horizontal first through hole 6.2 is provided below the fixed part 6.1. The movable part 6.3 is hinged to one side of the fixed part 6.1. A connecting plate 6.4 is provided below the movable part 6.3. The end of the steel cable 12 passes through the first through hole 6.2 of the fixed part 6.1 and is fixedly connected to the connecting plate 6.4. By manually rotating the movable part 6.3, the steel cable 12 can be pulled.

[0050] An upper limit structure and a lower limit structure are respectively provided between the fixed slider 10 and the top plate 1 and between the fixed slider 10 and the middle plate 3. The upper limit structure and the lower limit structure can adjust the fitting clearance between the fixed slider 10 and the top plate 1 and between the fixed slider 10 and the middle plate 3 up and down. When part of the gas in the gas spring 7 leaks due to long-term use, resulting in a weakened supporting force and a certain amount of play, the problem of play can be directly solved by adjusting the upper limit structure and the lower limit structure, and there is no longer a need to adjust the inflation amount of the gas spring 7 to solve the problem of play. The adjustment is convenient and fast.

[0051] As Figure 7 and Figure 8 shown, the upper limit structure of this embodiment includes a top block 21 and a convex platform 10.3. A screw rod 22 extending downward is provided on the top plate 1. The top block 21 is threadedly connected to the screw rod 22 through a threaded hole at the upper end. By rotating the top block 21, the height of the top block 21 can be adjusted up and down. Two first locking nuts 20 are connected to the screw rod 22. The upper first locking nut 20 is used to lock the screw rod 22 on the top plate 1, and the lower first locking nut 20 is used to lock the top block 21 on the screw rod 22. The convex platform 10.3 is fixedly provided on the upper surface of the fixed slider 10. The top block 21 and the convex platform 10.3 are aligned up and down. When the top plate 1 descends to the lowest position, the top block 21 will abut against the convex platform 10.3. By adjusting the position of the top block 21 up and down, the fitting clearance between the fixed slider 10 and the top plate 1 at this time can be adjusted, thereby overcoming the play of the gas spring 7 at the lowest point.

[0052] The lower limit structure of this embodiment includes three adjusting fasteners 16. The adjusting fasteners 16 can be conventional flat head screws. The adjusting fasteners 16 are threadedly connected to the threaded holes below the fixed slider 10. The lower surface of the adjusting fasteners 16 is used to abut against the upper surface of the intermediate plate 3. A second locking nut 19 is connected to the adjusting fasteners 16, and the adjusting fasteners 16 can be locked on the fixed slider 10 through the second locking nut 19. Three through holes 3.1 are provided on the intermediate plate 3. The positions of the through holes 3.1 are aligned with the adjusting fasteners 16 up and down. The diameter of the through holes 3.1 is smaller than the lower end diameter of the adjusting fasteners 16. As Figure 5 shown, when the top plate 1 rises to the highest position, the lower end surface of the adjusting fastener 16 will abut against the upper surface of the intermediate plate 3. At this time, loosen the second locking nut 19, and rotate the adjusting fastener 16 by passing a screwdriver through the through hole 3.1, then the fitting clearance between the fixed slider 10 and the intermediate plate 3 at this time can be adjusted, so as to overcome the virtual position of the gas spring 7 at the highest point.

[0053] As Figure 1 and Figure 2 shown, this embodiment is provided with two sets of mechanical lifting structures to support the same top plate 1, so as to achieve more stable lifting and support. The two sets of mechanical lifting structures share a control handle 6. The steel cables 12 of the two sets of mechanical lifting structures are respectively connected to the same control handle 6. When in use, the two sets of mechanical lifting structures can be unlocked simultaneously by operating the control handle 6.

[0054] The usage process of this embodiment is as follows:

[0055] When it is necessary to raise the top plate 1 from the lowest position to the highest position, press the movable part 6.3 of the control handle 6, drive the locking rod 5 to rotate through the steel cable 12, so that the limiting block 5.1 and the limiting hole 10.2 are aligned up and down. At this time, under the action of the gas spring 7, the sliding lifting assembly together with the top plate 1 automatically rises, and the limiting block 5.1 passes through the limiting hole 10.2 until it rises to the highest position. As Figure 5 shown, at the highest position, the lower end surface of the adjusting fastener 16 abuts against the upper surface of the intermediate plate 3, and the limiting block 5.1 is located above the fixed slider 10. Then loosen the movable part 6.3 of the control handle 6. Under the action of the spring 13, it will drive the spring piece 14, the locking rod 5, and the movable part 6.3 of the control handle 6 to reset. The positions of the limiting block 5.1 and the limiting hole 10.2 are staggered, and the mechanical lifting structure is locked at the highest position. At this time, as Figure 6 shown.

[0056] When it is necessary to lower the top plate 1 from the highest position to the lowest position, press the movable part 6.3 of the control handle 6. The locking rod 5 is driven to rotate by the steel cable 12, so that the limit block 5.1 and the limit hole 10.2 are aligned vertically. At this time, manually press the top plate 1 downward. The top plate 1 and the sliding lifting assembly will descend, and the gas spring 7 buffers the descent. The limit block 5.1 passes through the limit hole 10.2 until it descends to the lowest position. The top block 21 abuts against the boss 10.3, and the limit block 5.1 is located below the fixed slider 10. Then release the movable part 6.3 of the control handle 6. Under the action of the spring 13, it will drive the spring piece 14, the locking rod 5, and the movable part 6.3 of the control handle 6 to reset. The positions of the limit block 5.1 and the limit hole 10.2 are staggered, and the mechanical lifting structure is locked at the lowest position. At this time, as Figure 3 and Figure 4 shown.

[0057] In an aircraft, high-speed train, business car, ship or customized mobile space, it is usually required that the tabletop is either at the highest position in the use state or at the lowest position in the safe state. Therefore, the adjustment of the mechanical lifting structure of the present invention has only the highest and lowest positions.

[0058] The above embodiments of the present invention do not limit the protection scope of the present invention. The implementation manners of the present invention are not limited thereto. All these modifications, substitutions or changes in various other forms made to the above structure of the present invention according to the above content of the present invention, in accordance with the common general technical knowledge and customary means in the art, without departing from the above basic technical idea of the present invention, shall fall within the protection scope of the present invention.

Claims

1. A mechanical lifting structure with adjustable clearance suitable for an interior decoration carrier, characterized in that: The invention comprises a gas spring, a sliding lifting assembly, a fixed slider, a locking rod, a control mechanism, a top plate, an intermediate plate and a bottom plate, wherein the intermediate plate is arranged at the lower end of the sliding lifting assembly, the upper end and the lower end of the gas spring are respectively hinged to the intermediate plate and the bottom plate, the fixed slider is fixedly arranged, the sliding lifting assembly is slidably connected to the fixed slider, the upper end of the sliding lifting assembly is fixedly connected to the top plate, the upper and lower ends of the locking rod are respectively rotatably connected to the intermediate plate and the top plate, the locking rod passes through the middle hole of the fixed slider, the side of the middle hole is provided with a limiting hole, and the A limit block is provided on the side wall of the locking rod, and the control mechanism is connected to the locking rod; the locking rod can be driven to rotate by the control mechanism so that the limit block is aligned or staggered with the limit hole up and down, and when the limit block is aligned with the limit hole up and down, the limit block can pass through the limit hole; an upper limit structure and a lower limit structure are respectively provided between the fixed slider and the top plate and between the fixed slider and the middle plate, and the upper limit structure and the lower limit structure can adjust the matching clearance between the fixed slider and the top plate and between the fixed slider and the middle plate up and down.

2. The mechanical lifting structure with adjustable gap suitable for interior decoration carrier according to claim 1, characterized in that: The control mechanism includes a control handle, a steel cable, a spring sheet and a spring. The control handle is mounted on the top plate. One end of the spring sheet is fixedly connected to the locking rod, and the other end is an outer end extending laterally to the side of the locking rod. The spring is connected to the outer end of the spring sheet. The two ends of the steel cable are respectively connected to the control handle and the outer end of the spring sheet. Operating the control handle can pull the outer end of the spring sheet to rotate by the steel cable. The force exerted by the control handle on the outer end of the spring sheet through the steel cable is opposite to the force exerted by the spring on the outer end of the spring sheet.

3. The mechanical lifting structure with adjustable gap suitable for interior decoration carrier according to claim 2, characterized in that: The control handle includes a fixed part and a movable part, the fixed part is fixedly mounted on the top plate, the movable part is hinged on the fixed part, a connecting plate is provided on the movable part, and the end of the steel cable passes through the first through hole of the fixed part and is fixedly connected to the connecting plate.

4. The mechanical lifting structure with adjustable gap suitable for interior decoration carrier according to claim 1, characterized in that: The upper limit structure comprises a top block and a boss aligned up and down, the top block is arranged below the top plate and can be adjusted up and down, and the boss is fixedly arranged above the fixed sliding block.

5. The mechanical lifting structure with adjustable gap suitable for interior decoration carrier according to claim 4, characterized in that: The top plate is provided with a screw rod extending downward, and the top block is threadedly connected with the screw rod through a threaded hole at the upper end.

6. The mechanical lifting structure with adjustable gap suitable for interior decoration carrier according to claim 1, characterized in that: The lower limit structure comprises an adjusting fastener, which is threadedly connected in a threaded hole below the fixed sliding block, and the lower side of the adjusting fastener is used to abut against the upper side of the middle plate.

7. The mechanical lifting structure with adjustable gap suitable for interior decoration carrier according to claim 6, characterized in that: The middle plate is provided with a through hole, and the position of the through hole is aligned with the adjusting fastener in the upper and lower parts.

8. The mechanical lifting structure with adjustable gap suitable for interior decoration carrier according to claim 1, characterized in that: The mechanical lifting structure also includes a fixed sleeve, which is sleeved on the periphery, the lower end of the fixed sleeve is fixedly connected to the bottom plate, and the upper end of the fixed sleeve is fixedly connected to the fixed slider.

9. The mechanical lifting structure with adjustable gap suitable for interior decoration carrier according to claim 8, characterized in that: The mechanical lifting structure further comprises a movable sleeve, wherein the movable sleeve is nested with the upper end of the fixed sleeve, and the upper end of the movable sleeve is fixedly connected to the top plate.

10. The mechanical lifting structure with adjustable gap suitable for interior decoration carrier according to claim 1, characterized in that: The sliding lifting assembly comprises a sliding rod, a sliding hole is provided on the fixed sliding block, the sliding rod passes through the sliding hole, and the upper and lower ends of the sliding rod are fixedly connected to the top plate and the middle plate respectively.

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