CN216690797U

CN216690797U - Novel sliding door

Info

Publication number: CN216690797U
Application number: CN202120550340.7U
Authority: CN
Inventors: 杨雷; 李壮壮; 夏磊
Original assignee: Hebi Tianhai Electronic Information System Co Ltd
Current assignee: Hebi Tianhai Electronic Information System Co Ltd
Priority date: 2021-03-17
Filing date: 2021-03-17
Publication date: 2022-06-07
Anticipated expiration: 2031-03-17

Abstract

The utility model relates to the technical field of doors and windows, in particular to a novel sliding door, which better solves the problems that the sliding gap of a common sliding door is large and the sliding door is easy to vibrate when sliding; the double-layer partition wall design is adopted, the sliding door is positioned in the partition wall when being opened, the appearance is attractive, the space is not occupied, and the sliding is not influenced by the barrier on the sliding track; the double-layer partition wall is also provided with the magnetic steel, so that the sliding door is limited and cannot easily move when being positioned at the accommodating position; the upper partition wall is provided with the damping device, so that the sliding door can damp and buffer when opening and closing the door, and the abrasion of the sliding door due to the impact during opening and closing is reduced.

Description

Novel sliding door

Technical Field

The utility model relates to the technical field of doors and windows, in particular to a novel sliding door.

Background

With the progress of the times and the continuous development of scientific technology, the domestic requirements on vehicle-mounted military square cabins, civil square cabins and special modified vehicles are higher and higher, and the requirements on the aspects of appearance, comfort, stability and the like of products are also higher and higher;

partition walls are generally required to be additionally arranged in the square cabin and the modified vehicle and used for dividing the internal area of the cabin, a single-door or a sliding door is arranged on the partition walls, a certain sector-shaped door opening space is required to be reserved when the single-door is opened, and equipment cannot be installed in the space; when the sliding door is used, the sliding door only needs to be pushed and pulled leftwards and rightwards, no space is reserved, but the thickness of the partition wall needs to be increased;

to sum up, the installation list is opened the door and can be reduced under-deck space utilization on the inside partition wall of shelter, it is less that the installation push-and-pull door occupies inner space on the partition wall, but general current structure is comparatively complicated, the operation is inconvenient when the push-and-pull door uses, common push-and-pull door generally directly chooses for use the house dress to move a part and hangs the wheel structure, this structure sliding gap is great, the easy jamming of vibration back switch door, it is not hard up still to appear after long-time the use, and it uses on-vehicle not, consequently, design an easy operation, durable and be fit for on-vehicle novel push-and-pull door and just seem comparatively important.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides the novel sliding door, the upper part of the sliding door uses the double-axis linear guide rail to realize the sliding function, the sliding clearance is less, the use is more convenient, the lower part of the sliding door enables the sliding door to be separated from the bottom plate to slide through the nylon plate, the friction and the vibration are reduced, and the cost is low.

The specific technical scheme is as follows: a novel sliding door comprises a double-layer partition wall and is characterized in that a double-axis linear guide rail is fixedly installed in the double-layer partition wall, a connecting block is installed on the double-axis linear guide rail in a sliding mode, a sliding door is fixedly installed at the lower end of the connecting block, a lower sliding rail fixedly installed at the bottom end of the double-layer partition wall is matched with the bottom end of the sliding door in a sliding mode, and a door frame is arranged on the double-layer partition wall and located below one transverse end of the double-axis linear guide rail;

the double-layer partition wall is internally provided with a damping device and a damping device, the damping device is arranged in the double-layer partition wall, the damping device enables the sliding door to be opened or closed, the force and the shock are discharged, and the locking mechanism of the sliding door are arranged above one side, transversely far away from the limiting device, of the double-layer partition wall, so that the sliding door is closed and then limited.

Preferably, locking mechanism includes that fixed mounting transversely keeps away from stop device one end top and is located the latch hook of biax heart linear guide below at the door frame, the latch hook cooperation has the top lock that sets up in push-and-pull door upper end towards latch hook one side, vertical slidable mounting has and latch hook complex wedge including lock sleeve and lock sleeve in the top lock, wedge lower extreme screw-thread fit has screw rod and screw rod lower extreme demountable installation has the steel wire, the steel wire other end is connected with and installs lock and rotating the lock on the push-and-pull door and can stimulate the steel wire.

Preferably, the door lock comprises a lock box fixedly mounted on the sliding door, an inner door handle and an outer door handle which are longitudinally and symmetrically arranged are rotatably mounted on the lock box, a torsion spring is connected between the inner door handle and the outer door handle and the lock box, a limit bolt is arranged in the lock box and is matched with the torsion spring, so that the inner door handle and the outer door handle can only rotate within a certain range, a lock bolt is fixedly sleeved on a rotating shaft of the inner door handle and the outer door handle, a lock bolt is fixedly mounted at the lower end of the steel wire, a bolt matched with the lock bolt is fixedly mounted at the lower end of the steel wire, two ends of the bolt extending out of the lock bolt are matched with nuts in a threaded manner, the nuts are abutted against the bottom ends of the lock bolt, and nylon check rings are arranged on two sides of the lock bolt on the rotating shaft of the inner door handle and the rotating shaft of the outer door handle.

Preferably, biax center linear guide includes that the symmetry is provided with two gothic grooves on section bar guide rail and the section bar guide rail of fixed mounting in double-deck partition wall, gothic groove sliding fit has two sliders and slider to be provided with four crisscross gyro wheels that set up towards section bar guide rail one end, four but nonadjacent two gyro wheels are vertical regulation with a gothic groove roll fit and gyro wheel jointly in the gyro wheel, the slider deviates from gyro wheel one end and connecting block fixed connection, the horizontal both ends fixed mounting of section bar guide rail has the rubber stopper.

Preferably, the damping device comprises a rubber plate fixedly installed at the lower end of the double-layer partition wall on the transverse side of the sliding door and a thick sponge rubber plate fixedly installed at the upper end of the door frame on the side facing the sliding door.

Preferably, the limiting device comprises magnetic steel which is fixedly installed on the double-layer partition wall and located at the maximum opening position of the sliding door, the magnetic steel is matched with the sliding door, and the magnetic steel is located below the profile guide rail.

Preferably, the lower slide rail includes that fixed mounting has horizontal aluminum strip on stainless steel bottom plate and the bottom plate of fixed mounting on double-deck partition wall, the push-and-pull door lower extreme begins to have horizontal U type groove and U type inslot fixed mounting to have the nylon plate of U type, nylon plate and aluminum strip lateral sliding fit, push-and-pull door lower extreme and bottom plate intermittent type cooperation.

Preferably, the sliding door comprises a frame, the connecting block is fixedly connected with the frame, the U-shaped groove is formed in the lower end of the frame, the surface of the frame is wrapped by the inner skin material and the outer skin material, and the frame is internally provided with an internal filling material;

the frame is made of aluminum-magnesium alloy material;

the inner skin material and the outer skin material are made of carbon fiber materials;

the internal filling material is made of a paper honeycomb material.

Preferably, the double-layer partition wall is detachably provided with a maintenance cover plate above the sliding door.

Preferably, the frame is provided with a window, and the window is provided with a gauze.

The utility model has the beneficial effects that: 1) the sliding door better solves the problems that the sliding gap of a common sliding door is large and the sliding door is easy to vibrate when sliding, the upper part of the sliding door realizes the sliding function by using the double-axis linear guide rail, the sliding gap is small, the use is also convenient, the lower part of the sliding door enables the sliding door to be separated from the bottom plate to slide by the nylon plate, the friction and the vibration are reduced, and the cost is low;

(2) the double-layer partition wall design is adopted, the sliding door is positioned in the partition wall when being opened, the appearance is attractive, the space is not occupied, and the sliding is not influenced by the barrier on the sliding track;

(3) the double-layer partition wall is also provided with the magnetic steel, so that the sliding door is limited and cannot easily move when being positioned at the accommodating position;

(4) the upper partition wall is provided with the damping device, so that the sliding door can damp and buffer when opening and closing the door, and the abrasion of the sliding door due to the impact during opening and closing is reduced.

Drawings

FIG. 1 is an isometric, schematic view of the present invention;

FIG. 2 is a schematic view of the present invention with a partition wall removed;

FIG. 3 is a schematic view of the installation position of the roller on the slider according to the present invention;

FIG. 4 is a schematic view of a dual-axis linear guide of the present invention;

FIG. 5 is a schematic view of a sliding door according to the present invention;

FIG. 6 is a schematic cross-sectional view of a sliding door of the present invention with the interior filler material removed;

FIG. 7 is a partial schematic view of the utility model at B of FIG. 6;

FIG. 8 is a partial schematic view of the utility model at A of FIG. 6.

Detailed Description

The foregoing and other aspects, features and advantages of the utility model will be apparent from the following more particular description of the embodiments of the utility model, as illustrated in the accompanying drawings in which reference is made to figures 1 to 8. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.

Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

Embodiment 1, this embodiment provides a novel sliding door, referring to fig. 1 and fig. 2, which includes a double-layer partition wall 1, a double-axis linear guide 2 is fixedly installed in the double-layer partition wall 1, the double-axis linear guide 2 is used in a linear reciprocating motion situation, can bear, fix and guide a moving device or equipment and reduce friction thereof, has a higher rated load than a linear bearing, and can bear a certain torque, and can realize a high-precision linear motion under a high load, so that the sliding door 4 is more stable, has a smaller friction force and is more labor-saving when opening and closing the door, a connecting block 3 is transversely slidably installed on the double-axis linear guide 2, a sliding door 4 is fixedly installed at the lower end of the connecting block 3, a lower sliding rail 5 fixedly installed at the bottom end of the double-layer partition wall 1 is transversely slidably fitted at the bottom end of the sliding door 4, and a door frame 6 is installed on the double-layer partition wall 1 below the transverse end of the double-axis linear guide 2, when the sliding door 4 is closed, the sliding door 4 blocks the door frame 6, so that the space in the cabin is separated, and when the sliding door 4 is in a storage position, namely when the sliding door 4 is opened, the door frame 6 is exposed, so that articles or people can pass through;

we still lie in double-deck partition wall 1 and keep away from 6 one end of door frame at double-axis linear guide 2 and be provided with stop device, make push-and-pull door 4 open the back by spacing and can not remove easily through stop device, and be provided with damping device in the double-deck partition wall 1, make push-and-pull door 4 open or unload power, shock attenuation when closing, the double-deck top that lies in door frame 6 and transversely keeps away from stop device one side still is provided with the locking mechanism of push-and-pull door 4 in addition, make push-and-pull door 4 close the back by spacingly, make the cabin inner space separated.

Embodiment 2, on the basis of embodiment 1, referring to fig. 2 and 8, the locking mechanism includes a latch hook 7 fixedly installed above one end of the door frame 6, which is laterally far away from the position limiting device, and located below the double-axis linear guide 2, and the latch hook 7 is matched with a top lock 8 arranged on one side of the upper end of the sliding door 4, which faces the latch hook 7, and the top lock 8 includes a lock sleeve 9, and a wedge 10 matched with the latch hook 7 is vertically slidably installed in the lock sleeve 9, and a bolt 11 is threadedly matched with the lower end of the wedge 10, and a steel wire 12 is detachably installed at the lower end of the bolt 11, so that the wedge 10 can vertically move relative to the lock sleeve 9 by rotating the bolt 11, which facilitates assembly and debugging, and the other end of the steel wire 12 is connected with a door lock installed on the sliding door 4 (a space for installing the lock sleeve 9 and transmitting the steel wire 12 is left in the sliding door 4), so that when the sliding door 4 is closed, wedge 10 and latch hook 7 cooperation, make push-and-pull door 4 limited, door frame 6 is also plugged up, make the cabin inner space cut apart, and just can pull loose steel wire 12 through twisting the lock when needing to open push-and-pull door 4, thereby drive wedge 10 vertical migration, make wedge 10 and latch hook 7 break away from, just can promote push-and-pull door 4, make push-and-pull door 4 opened, and push-and-pull door 4 is spacing by stop device after being opened, make push-and-pull door 4 can not remove easily and influence article or personnel and pass through in door frame 6, and be connected with spring 32 between wedge 10 lower extreme and the lock sleeve 9, after loosing inside and outside door handle 14, wedge 10 resets under spring 32's effect.

Embodiment 3, on the basis of embodiment 2, referring to fig. 7, a door lock includes a lock case 13 fixedly installed on a sliding door 4, an inner and outer door handles 14 longitudinally and symmetrically installed on the lock case 13 in a rotating manner, and a torsion spring connected between the inner and outer door handles 14 and the lock case 13, a limit bolt 15 is installed inside the lock case 13, a lock tongue 16 is fixedly sleeved on a rotating shaft of the inner and outer door handles 14, nylon retainer rings 20 are installed on two sides of the lock tongue 16 on the rotating shaft of the door outer door handle, so that the lock tongue 16 can only rotate in one direction and can be blocked by the limit bolt 15 when rotating in the other direction through the cooperation of the limit bolt 15 and the torsion spring, so that the inner and outer door handles 14 can only rotate within a certain range (in general, the inner handle rotates clockwise, the outer handle rotates counterclockwise), and the torsion spring can also automatically reset after the inner and outer door handles 14 rotate, in addition, a lock bolt 17 is fixedly installed at the other end of the lock tongue 16, a bolt 11 matched with the lock bolt 17 is fixedly installed at the lower end of the steel wire 12, the bolt 11 can penetrate through the lock bolt 17, nuts 19 are in threaded fit at the upper end and the lower end of the bolt 11 extending out of the lock bolt 17, and in order to enable the steel wire 12 to be stable, the nuts 19 are screwed and abutted to the two end faces of the lock bolt 17, so that when the sliding door 4 needs to be opened, the lock tongue 16 can be driven to rotate only by rotating the inner door handle 14 and the outer door handle 14, the lock bolt 17 moves towards the direction far away from the wedge-shaped block 10, the wedge-shaped block 10 moves downwards through the steel wire 12, the wedge-shaped block 10 is separated from the lock hook 7 after the inner door handle 14 rotates by the maximum angle, the sliding door 4 loses the limit, at the moment, people can pull the sliding door 4 to open the sliding door 4 by pulling the inner door handle 14 until the sliding door 4 is completely opened, and attention needs to be paid, after the inner door handle 14 and the outer door handle 14 rotate to the maximum angle, the sliding door 4 needs to be pulled to move for a certain distance, and then the inner door handle 14 and the outer door handle 14 can be abandoned to be screwed, so that the sliding door 4 is prevented from being limited due to the fact that the sliding door 4 is matched with the locking hook 7 without moving the wedge-shaped block 10.

Embodiment 4, on the basis of embodiment 1, referring to fig. 1 and 4, a biaxial linear guide 2 includes a profile guide 21 fixedly installed in a double-layer partition 1, and two gothic grooves are symmetrically arranged on the profile guide 21, so that even under ultra-high load, the load can be transferred to a non-contact surface, and the shock resistance of the product itself is greatly improved, and the gothic grooves are slidably fitted with two sliding blocks 22, referring to fig. 3, the sliding block 22 is provided with four rollers 23 alternately arranged facing one end of the profile guide 21, and two non-adjacent rollers 23 in the four rollers 23 are in one group, and one group of rollers 23 is in rolling fit with one gothic groove, and the two groups of rollers 23 can vertically adjust the gap, and it should be noted that the rotating shaft of the roller 23 needs to be locked and fixed again after adjusting the gap, and the looseness after long-time rolling is avoided, one end of the sliding block 22, which is far away from the roller 23, is fixedly connected with the connecting block 3, and rubber stoppers 24 are fixedly installed at the two transverse ends of the profile guide rail 21, so that the two sliding blocks 22 can only slide between the two rubber stoppers 24, and when the sliding blocks 22 are in contact with the rubber stoppers 24, the sliding door 4 is in a fully opened or fully closed state.

Embodiment 5, on the basis of embodiment 1, referring to fig. 2, the damping device includes a rubber plate 25 fixedly installed at the lower end of the side of the double-layer partition wall 1 that is located at the transverse direction of the sliding door 4, and a thick sponge rubber plate 26 fixedly installed at the upper end of the side of the door frame 6 that faces the sliding door 4, and the rubber plates are respectively used for damping the opening and the closing of the door, so that when the sliding door 4 is opened or closed, the damping device can buffer the sliding door 4, and the sliding door 4 can be prevented from directly colliding against the door frame 6 or the double-layer partition wall 1 during sliding to be damaged.

Embodiment 6, on the basis of embodiment 4, as shown in fig. 2, the limiting device includes a magnetic steel 27 fixedly installed on the double-layer partition wall 1 and located at the maximum opening position of the sliding door 4, and the magnetic steel 27 is located below the profile guide rail 21, and is alnico, which is made of several hard strong metals, such as iron, aluminum, nickel, cobalt, and the like, and sometimes made of copper, niobium, and tantalum, and is used for manufacturing an ultra-hard permanent magnetic alloy, so that when the sliding door 4 is opened, the magnetic steel 27 contacts with the side wall of the sliding door 4 to adsorb the sliding door 4, so that the sliding door 4 is limited and cannot easily move, and it should be noted that the magnetic force of the magnetic steel 27 is not too strong, and it is prevented that a large force is used to pull the sliding door 4.

Embodiment 7, on the basis of embodiment 1, referring to fig. 2, the lower sliding rail 5 includes a stainless steel bottom plate 28 fixedly installed on the double-layer partition wall 1, and a transverse aluminum strip 29 is fixedly installed on the bottom plate 28, a transverse U-shaped groove is formed at the lower end of the sliding door 4, and a U-shaped nylon plate 30 (or a U-shaped member made of teflon material, which has smaller frictional resistance) is fixedly installed in the U-shaped groove, and the nylon plate 30 and the aluminum strip 29 are in transverse sliding fit, so that the sliding door 4 is limited, and the lower end of the sliding door 4 is intermittently fitted with the bottom plate 28, and does not contact with the bottom plate 28, so that the friction can be effectively reduced, and the smaller the friction is, the more labor is saved when the sliding door 4 is pushed.

Embodiment 8, on the basis of embodiment 7, the existing sliding door 4 includes a frame of a box-shaped structure made of a metal material, a polyurethane foam material is used inside the frame, and steel materials are used as the inner and outer mounting structural members, so that the overall weight of the sliding door 4 is large, and it is difficult for an operator to push the sliding door 4;

the connecting block 3 is fixedly connected with the frame, and the U-shaped groove is arranged at the lower end of the frame.

Embodiment 9, on the basis of embodiment 1, referring to fig. 1, a maintenance cover plate 31 is detachably mounted on the double-layer partition wall 1 above the sliding door 4, so that the maintenance cover plate 31 can be removed for repair when relevant parts have faults.

Embodiment 10, on the basis of embodiment 8, the frame is provided with the window and the window is provided with the gauze, so that the situation opposite to the sliding door 4 can be observed through the window, and the air circulation in the cabin can be promoted.

The sliding door well solves the problems that the sliding gap of a common sliding door 4 is large and the sliding door is easy to vibrate when sliding, the upper part of the sliding door 4 realizes the sliding function by using the double-axis linear guide rail 2, the sliding gap is small, the use is convenient, the lower part of the sliding door 4 enables the sliding door 4 to be separated from the bottom plate 28 to slide by the nylon plate 30, the friction and the vibration are reduced, and the cost is low;

the double-layer partition wall 1 is adopted, the sliding door 4 is positioned in the partition wall when being opened, the appearance is attractive, the space is not occupied, and the sliding is not influenced by the barrier on the sliding track;

the double-layer partition wall 1 is also provided with the magnetic steel 27, so that the sliding door 4 is limited and cannot easily move when being positioned at the accommodating position;

the upper partition wall is provided with the damping device, so that the sliding door 4 can damp and buffer when the door is opened or closed, and the abrasion of the sliding door 4 due to the impact during opening and closing is reduced.

The above description is only for the purpose of illustrating the present invention, and it should be understood that the present invention is not limited to the above embodiments, and various modifications conforming to the spirit of the present invention are within the scope of the present invention.

Claims

1. A novel sliding door comprises a double-layer partition wall (1) and is characterized in that a double-axis linear guide rail (2) is fixedly installed in the double-layer partition wall (1), a connecting block (3) is transversely and slidably installed on the double-axis linear guide rail (2), a sliding door (4) is fixedly installed at the lower end of the connecting block (3), a lower sliding rail (5) fixedly installed at the bottom end of the double-layer partition wall (1) is transversely and slidably matched with the bottom end of the sliding door (4), and a door frame (6) is arranged below one transverse end of the double-axis linear guide rail (2) on the double-layer partition wall (1);

lie in double-deck partition wall (1) in double axle center linear guide (2) keep away from door frame (6) one end and be provided with stop device and make push-and-pull door (4) by spacing when opening, be provided with damping device and damping device in double-deck partition wall (1) and make push-and-pull door (4) open or close the time unload power, shock attenuation, the double-deck top that lies in door frame (6) and transversely keep away from stop device one side is provided with the locking mechanism and the locking mechanism of push-and-pull door (4) and is made push-and-pull door (4) to close the back spacing.

2. A new sliding door according to claim 1, characterized in that said locking mechanism comprises a locking hook (7) fixedly mounted on the door frame (6) above the end laterally remote from the stop means and below the biaxial linear guide (2), the lock hook (7) is matched with a top lock (8) which is arranged at one side of the upper end of the sliding door (4) facing the lock hook (7), the top lock (8) comprises a lock sleeve (9), a wedge-shaped block (10) matched with the lock hook (7) is vertically and slidably arranged in the lock sleeve (9), a bolt (11) is in threaded fit with the lower end of the wedge-shaped block (10), a steel wire (12) is detachably mounted at the lower end of the bolt (11), the other end of the steel wire (12) is connected with a door lock arranged on the sliding door (4) and the steel wire (12) can be pulled by rotating the door lock, the lower end of the wedge-shaped block (10) is fixedly provided with a spring (32), and the other end of the spring (32) is fixedly connected with the bottom wall of the lock sleeve (9).

3. The novel sliding door according to claim 2, wherein the door lock comprises a lock box (13) fixedly installed on the sliding door (4), an inner door handle (14) and an outer door handle (14) which are longitudinally and symmetrically arranged are rotatably installed on the lock box (13), a torsion spring is connected between the inner door handle (14) and the lock box (13), a limit bolt (15) is arranged inside the lock box (13), the limit bolt (15) is matched with the torsion spring, so that the inner door handle (14) and the outer door handle (14) can only rotate within a certain range, a lock tongue (16) is fixedly sleeved on a rotating shaft of the inner door handle (14) and the other end of the lock tongue (16) is fixedly installed with a lock bolt (17), a screw rod (18) matched with the lock bolt (17) is fixedly installed at the lower end of the steel wire (12), nuts (19) are matched with threads at both ends of the screw rod (18) extending out of the lock bolt (17), and the nuts (19) abut against the bottom end of the lock bolt (17), nylon retainer rings (20) are arranged on the rotating shaft of the inner door handle and the outer door handle (14) and positioned on two sides of the bolt (16).

4. The novel sliding door according to claim 1, wherein the double-axis linear guide rail (2) comprises a profile guide rail (21) fixedly installed in the double-layer partition wall (1), two gothic grooves are symmetrically arranged on the profile guide rail (21), two sliders (22) are in sliding fit in the gothic grooves, four rollers (23) are arranged in a staggered mode on one end, facing the profile guide rail (21), of the sliders (22), two nonadjacent rollers (23) in the four rollers (23) are in rolling fit with one gothic groove together, the rollers (23) can be vertically adjusted, one end, deviating from the rollers (23), of the slider (22) is fixedly connected with the connecting block (3), and rubber stoppers (24) are fixedly installed at two transverse ends of the profile guide rail (21).

5. A new sliding door according to claim 1, characterized in that the damping device comprises a rubber plate (25) fixedly mounted on the lower end of the side of the double partition wall (1) which is located at the transverse side of the sliding door (4) and a thick sponge rubber plate (26) fixedly mounted on the upper end of the side of the door frame (6) which faces the sliding door (4).

6. A novel sliding door according to claim 4, characterized in that the limiting device comprises a magnetic steel (27) which is fixedly arranged on the double-layer partition wall (1) and is positioned at the maximum opening position of the sliding door (4), the magnetic steel (27) is matched with the sliding door (4), and the magnetic steel (27) is positioned below the profile guide rail (21).

7. The novel sliding door according to claim 1, wherein the lower sliding rail (5) comprises a stainless steel bottom plate (28) fixedly installed on the double-layer partition wall (1), a transverse aluminum strip (29) is fixedly installed on the bottom plate (28), a transverse U-shaped groove is formed at the lower end of the sliding door (4), a U-shaped nylon plate (30) is fixedly installed in the U-shaped groove, the nylon plate (30) is in transverse sliding fit with the aluminum strip (29), and the lower end of the sliding door (4) is in intermittent fit with the bottom plate (28).

8. The novel sliding door according to claim 7, characterized in that the sliding door (4) comprises a frame, the connecting block (3) is fixedly connected with the frame, the U-shaped groove is arranged at the lower end of the frame, the surface of the frame is wrapped by the inner and outer skin materials, and the interior of the frame is provided with the inner filling material;

the frame is made of aluminum-magnesium alloy material;

the internal filling material is made of a paper honeycomb material.

9. A new sliding door according to claim 1, characterized in that a maintenance cover plate (31) is detachably mounted on the double-layer partition wall (1) above the sliding door (4).

10. A novel sliding door according to claim 8 wherein a window is provided in the frame and a screen is provided in the window.