Dustproof and anti-stumbling three-push-pull flat rail structure

By setting dustproof sheets on the flat rail of the three-push-pull flat rail structure and adopting a flat rail design, the problems of difficult cleaning and safety hazards in the existing three-push-pull flat rail design are solved, and the cleaning and safety of the track are improved.

CN222962676UActive Publication Date: 2025-06-10HUBEI LIANTOU NEW MATERIAL DEV CO LTD
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Patent Information

Application Number
CN202421757901.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-24
Publication Date
2025-06-10
Estimated Expiration
2034-07-24

AI Technical Summary

Technical Problem

In the existing three-push and pull flat rail design, the design of high and low rails inside and outside makes the track difficult to clean, easily accumulate dust and debris, and there are safety hazards, which can easily lead to tripping accidents.

Method used

A three-slide flat rail structure that is dust-proof and bump-proof is designed. By setting dustproof sheets on the flat rail, dust and debris are prevented from entering the inside of the chute, and a flat rail design is adopted to avoid the risk of tripping caused by traditional high and low rail designs.

Benefits of technology

It effectively prevents dust and debris from entering the inside of the track, keeps the track clean and tidy, reduces the cleaning workload, improves the hygiene level of the use environment, and improves the safety of use.

✦ Generated by Eureka AI based on patent content.

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Abstract

The dustproof and anti-stumbling three-push-and-pull flat rail structure comprises a bottom rail, a first flat rail and two second flat rails, the first flat rail is arranged on the bottom rail, the bottom rail is provided with an assembling face used for installing the second flat rails, and the two second flat rails are detachably connected in the width direction of the assembling face; sliding rails are arranged on the first flat rail and the second flat rail, door leaves are arranged on the first flat rail and the second flat rail in a sliding mode, sliding grooves in sliding fit with the first flat rail or the second flat rail are formed in the bottoms of the door leaves, and sliding blocks in sliding fit with the sliding rails are arranged in the sliding grooves of the door leaves. According to the sliding door, through the arrangement of the dustproof pieces, pollutants such as dust and sundries can be effectively prevented from entering the sliding grooves, cleanliness and tidiness of the rails are kept, through the design of the flat rails, the sliding door is convenient to use, and the service life of the sliding door is prolonged. The tripping risk possibly caused by the traditional high-low track design is avoided, and the safety is improved.
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Description

Technical Field

[0001] This application relates to the technical field of door and window installation, and particularly relates to a three-sliding flat rail structure for dust prevention and anti-tripping. Background Art

[0002] In the existing field of door and window design, the three-sliding flat rail structure is widely used in various home and commercial environments due to its unique opening method and space-saving advantages.

[0003] However, the existing three-sliding flat rail design often adopts the design scheme of internal and external high-low tracks. Although this design meets the basic sliding function to a certain extent, in the actual use process, the internal and external high-low track design forms a groove area inside the track that is not easy to clean. Since this area is relatively hidden and usually near the ground, it is very easy to accumulate dust, debris and other sundries. These sundries not only affect the appearance, but may also have an adverse impact on the sliding performance of the track, resulting in phenomena such as jamming and unsmoothness when pushing and pulling the door leaf. In addition, due to the great difficulty in cleaning, users often need to spend more time and energy to maintain this area, increasing the use cost.

[0004] Secondly, the design of internal and external high-low tracks also has certain safety hazards. Since the inner track is higher than the outer track, a stepped structure is formed. This design may not be visually flat enough and is likely to mislead pedestrians. Especially for people with inconvenient mobility such as the elderly and children, this stepped structure is more likely to cause tripping accidents, thus triggering safety problems.

[0005] In view of the above problems, a three-sliding flat rail structure for dust prevention and anti-tripping is now designed. Utility Model Content

[0006] The embodiments of this application provide a three-sliding flat rail structure for dust prevention and anti-tripping to solve the problems in the related art that the existing three-sliding flat rail design often adopts the design scheme of internal and external high-low tracks, resulting in a groove area inside the track that is not easy to clean, and forming a stepped structure that is easy to accumulate sundries and is also easy to cause tripping accidents.

[0007] In the first aspect, a three-sliding flat rail structure for dust prevention and anti-tripping is provided, including:

[0008] A bottom rail, a first flat rail and two second flat rails. The first flat rail is arranged on the bottom rail. The bottom rail has an assembly surface for installing the second flat rails. The two second flat rails are detachably connected along the width direction of the assembly surface;

[0009] Sliding rails are provided on both the first flat rail and the second flat rail. A door leaf is slidably arranged on the first flat rail and the second flat rail. A chute that is slidably matched with the first flat rail or the second flat rail is opened at the bottom of the door leaf, and a slider that is slidably matched with the sliding rail is arranged inside the chute of the door leaf;

[0010] Four dust-proof sheets are provided on both the first flat rail and the second flat rail. The other end of the dust-proof sheet is attached to the door leaf and is used to seal the chute.

[0011] In some embodiments, the first flat rail and the two second flat rails are sequentially distributed along the width direction of the bottom rail;

[0012] The first flat rail is integrally formed with the bottom rail, and the two second flat rails are arranged on the bottom rail through bolts.

[0013] In some embodiments, accommodation grooves are opened on both the first flat rail and the second flat rail. An opening is provided at the upper part of the accommodation groove. The sliding rail is arranged inside the accommodation groove, and the upper end of the sliding rail extends outside the opening and is slidably matched with the slider;

[0014] Sliding grooves are opened on both the first flat rail and the second flat rail, and one end of the bottom of the door leaf extends into the sliding groove.

[0015] In some embodiments, clamping grooves are opened on both sides of the first flat rail and the second flat rail and on both sides inside the sliding groove. The adjacent four dust-proof sheets are clamped inside the corresponding clamping grooves, and the other end of the dust-proof sheet is attached to the side wall of the corresponding door leaf.

[0016] In some embodiments, the dust-proof sheet is a siliconized wool strip or a low-friction ethylene propylene diene monomer (EPDM) rubber strip.

[0017] In some embodiments, a gasket is arranged inside the sliding groove. The bolts are arranged inside the sliding groove, and the bolts are located at the bottom of the gasket;

[0018] The gasket is a waterproof gasket or a moisture-proof gasket.

[0019] In some embodiments, hook edge end caps are arranged at both ends of the chute at the bottom of the door leaf, and grooves for accommodating the sliding rail are opened on the hook edge end caps;

[0020] The sliding rail is a stainless steel rail.

[0021] The embodiment of the present application provides a three-way sliding flat rail structure for dust prevention and anti-tripping. Through the arrangement of the dust-proof sheet, it effectively prevents pollutants such as dust and sundries from entering the inside of the chute, keeps the track clean and tidy, reduces the cleaning workload, and improves the sanitation level of the use environment.

[0022] By adopting a flat rail design, the tripping risk that may be brought about by the traditional high-low rail design is avoided, and the safety of use is improved. Especially for the elderly, children, and people with limited mobility, this design is more considerate and user-friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0024] Figure 1 The front view provided by the embodiment of the present application;

[0025] Figure 2 The front sectional view provided by the embodiment of the present application;

[0026] Figure 3 Provided by the embodiment of the present application Figure 2 The enlarged view at position A in;

[0027] Figure 4 The traditional three-slide flat rail provided by the embodiment of the present application.

[0028] In the figure: 1, bottom rail; 2, flat rail one; 3, flat rail two; 4, assembly surface; 5, slide rail; 6, door leaf; 7, dust-proof sheet; 8, receiving groove; 9, slideway; 10, card slot; 11, gasket; 12, hooked end cap. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0030] The embodiment of the present application provides a three-slide flat rail structure for dust prevention and anti-tripping, which can solve the problems in the related art that the existing three-slide flat rail design often adopts an internal and external high-low rail design scheme, resulting in a groove area that is not easy to clean inside the rail, and a stepped structure that is prone to accumulating debris and is also prone to causing tripping accidents.

[0031] Please refer to Figures 1 - 3, A three - sliding flat - rail structure for dust and bump prevention includes: a bottom rail 1, a first flat rail 2, and two second flat rails 3. The first flat rail 2 is arranged on the bottom rail 1. The bottom rail 1 has an assembly surface 4 for installing the second flat rails 3. The two second flat rails 3 are detachably connected along the width direction of the assembly surface 4. Slide rails 5 are arranged on both the first flat rail 2 and the second flat rails 3. A door leaf 6 is slidably arranged on the first flat rail 2 and the second flat rails 3. A chute for sliding - fit with the first flat rail 2 or the second flat rails 3 is opened at the bottom of the door leaf 6. A slider for sliding - fit with the slide rail 5 is arranged inside the chute of the door leaf 6. Four dust - proof sheets 7 are arranged on both the first flat rail 2 and the second flat rails 3. The other end of the dust - proof sheet 7 is attached to the door leaf 6 and is used to seal the chute.

[0032] The bottom rail 1 serves as the support foundation of the entire system and is stably installed at the required position. The first flat rail 2 is directly fixed on the bottom rail 1, providing a stable platform for the sliding of the door leaf 6. The two second flat rails 3 are detachably connected through the assembly surface 4 on the bottom rail 1. This design not only ensures the structural stability but also facilitates subsequent maintenance and replacement.

[0033] During the sliding process of the door leaf 6, the chute opened at its bottom is in close fit with the slide rail 5 on the first flat rail 2 or the second flat rails 3. A low - friction and high - stability sliding contact is formed between the slider inside the chute and the slide rail 5, enabling the door leaf to move smoothly and steadily during the push - pull process. This design not only improves the sliding efficiency of the door leaf but also reduces the noise and wear generated by friction.

[0034] In addition, to prevent dust and sundries from entering the inside of the chute, four dust - proof sheets 7 are arranged at both ends of the first flat rail 2 and the second flat rails 3. The other ends of these dust - proof sheets 7 are closely attached to the door leaf 6. When the door leaf is in the closed or open state, it can effectively seal the chute and prevent the intrusion of external pollutants. This dust - proof design not only keeps the inside of the track clean but also extends the service life of the track and the door leaf.

[0035] In summary: Through the setting of the dust - proof sheets 7, it effectively prevents pollutants such as dust and sundries from entering the inside of the chute, keeps the track clean and tidy, reduces the cleaning workload, and improves the hygiene level of the use environment.

[0036] By adopting the flat - rail design, the tripping risk that may be brought by the traditional high - low rail design is avoided, and the safety of use is improved. Especially for the elderly, children, and people with limited mobility, this design is more considerate and user - friendly.

[0037] The stable connection between the first flat rail 2 and the bottom rail 1 and the detachable design of the second flat rail 3 make the whole structure both stable and easy to maintain. When components need to be replaced or repaired, disassembly and installation can be carried out easily, reducing the maintenance cost and difficulty. The precise fit design of the sliding rail 5 and the slider ensures the smoothness of the door leaf during pushing and pulling. This design effectively reduces the friction and wear between the door leaf and the rail, extends the service life and improves the comfort of use.

[0038] Specifically, in this embodiment, the first flat rail 2 and the two second flat rails 3 are sequentially distributed along the width direction of the bottom rail 1; the first flat rail 2 is integrally formed with the bottom rail 1, and the two second flat rails 3 are arranged on the bottom rail 1 through bolts.

[0039] The first flat rail 2 and the two second flat rails 3 are sequentially distributed along the width direction of the bottom rail 1. This layout ensures the smoothness of the door leaf 6 during sliding, and at the same time makes the whole structure more tidy and unified visually.

[0040] An integrally formed design is adopted between the first flat rail 2 and the bottom rail 1. This design method enhances the connection strength between the first flat rail 2 and the bottom rail 1, making the whole structure more stable and reliable. At the same time, the integral forming also reduces the potential safety hazards caused by the loosening or damage of the connecting parts, improving the safety of use.

[0041] The two second flat rails 3 are installed on the bottom rail 1 through bolts. This detachable connection method is convenient for subsequent maintenance and replacement work. When the second flat rail 3 is damaged or needs to be replaced, the old second flat rail 3 can be easily removed by disassembling the bolts, and a new second flat rail 3 can be installed. In addition, the bolt connection also has a certain degree of adjustability, and the position of the second flat rail 3 can be finely adjusted according to the actual situation to ensure the fitting accuracy between it and the first flat rail 2 and the bottom rail 1.

[0042] Specifically, in this embodiment, receiving grooves 8 are provided on both the first flat rail 2 and the second flat rails 3. The upper part of the receiving groove 8 is provided with an opening, and the sliding rail 5 is arranged inside the receiving groove 8. The upper end of the sliding rail 5 extends outside the opening and is in sliding fit with the slider; slideways 9 are provided on both the first flat rail 2 and the second flat rails 3, and one end of the bottom of the door leaf 6 extends into the slideway 9.

[0043] Receiving grooves 8 are provided on both the first flat rail 2 and the second flat rails 3. These receiving grooves provide a space for protecting and fixing the sliding rail 5. The upper part of the receiving groove 8 is provided with an opening, which allows the upper end of the sliding rail 5 to extend outside, so as to be in sliding fit with the slider at the bottom of the door leaf 6. This design ensures a more stable contact between the sliding rail 5 and the slider, reducing the offset or loosening caused by external forces.

[0044] Setting the sliding rail 5 inside the receiving groove 8 also helps to reduce the accumulation of dust and debris, as the part outside the opening is enclosed within the groove, reducing the difficulty of cleaning.

[0045] Sliding grooves 9 are provided on both the flat rail one 2 and the flat rail two 3. These sliding grooves provide additional support and guidance for the bottom of the door leaf 6. One end of the bottom of the door leaf 6 extends into the sliding groove 9. This design increases the stability of the door leaf during the sliding process, reducing wobbling and noise. At the same time, the sliding groove 9 can also serve as an auxiliary device for door leaf positioning, ensuring that the door leaf can be accurately aligned when closed.

[0046] The sliding groove 9, in conjunction with the receiving groove 8 and the sliding rail 5, forms a complete sliding system, making the pushing and pulling operation of the door leaf smoother and more reliable.

[0047] Furthermore, in this embodiment, clamping grooves 10 are provided on both sides of the flat rail one 2 and the flat rail two 3, as well as on both sides inside the sliding groove 9. Four adjacent dust-proof sheets 7 are clamped inside the corresponding clamping grooves, and the other end of the dust-proof sheet 7 is attached to the side wall of the corresponding door leaf 6.

[0048] On both sides of the flat rail one 2 and the flat rail two 3, as well as on both sides inside the sliding groove 9, clamping grooves 10 are carefully designed. The main function of these clamping grooves is to provide a stable fixing point for firmly clamping the dust-proof sheet 7 therein.

[0049] The shape and size of the clamping groove 10 are precisely calculated to ensure that the dust-proof sheet 7 can fit tightly with it and is not easily loosened or detached.

[0050] Four adjacent dust-proof sheets 7 are respectively clamped inside the clamping grooves 10 at the corresponding positions. This installation method is both simple and effective, enabling the quick fixation of the dust-proof sheet at the required position. The other end of the dust-proof sheet 7 is closely attached to the side wall of the corresponding door leaf 6. When the door leaf is closed, the dust-proof sheet can effectively prevent dust and debris from entering the sliding rail area through the gap between the door leaf and the track.

[0051] Due to the firm connection between the dust-proof sheet 7 and the clamping groove 10, as well as its close fit with the side wall of the door leaf, this design greatly enhances the dust-proof effect, ensuring the cleanliness and smooth operation of the sliding rail system.

[0052] This design not only improves the dust-proof performance but also enhances the overall stability and durability of the track system. The presence of the dust-proof sheet reduces problems such as poor sliding and wear caused by dust accumulation, extending the service life of the track system.

[0053] At the same time, the installation and replacement of the dust-proof sheet are relatively convenient, and maintenance can be carried out without disassembling the door leaf, reducing maintenance costs and time.

[0054] In one embodiment, the length of the card slot 10 and the dust-proof sheet 7 is the same as the length of the first flat rail 2 or the second flat rail 3.

[0055] The length of the card slot 10 is the same as the length of the first flat rail 2 or the second flat rail 3. This means that the card slot extends continuously along the entire length of the flat rail without interruption or gap. The length of the dust-proof sheet 7 corresponds to that of the card slot 10, and the length of the dust-proof sheet 7 is also designed to be the same as the length of the first flat rail 2 or the second flat rail 3. This ensures that the dust-proof sheet can completely cover both sides of the flat rail without leaving any gaps.

[0056] This design ensures that the dust-proof sheet 7 can be stably snapped along the entire length of the flat rail to form a continuous dust-proof barrier. No matter where the door leaf slides, the dust-proof sheet can provide effective dust-proof protection.

[0057] By setting the lengths of the card slot 10 and the dust-proof sheet 7 to be the same as the flat rail, this embodiment ensures the continuity and consistency of the dust-proof effect. No matter where the door leaf slides, users can enjoy good dust-proof protection.

[0058] This design also improves the overall aesthetics of the track system. The dust-proof sheet fits closely with the flat rail without any extra components or gaps, making the whole system look neater and more unified.

[0059] In one embodiment, it should be noted that the dust-proof sheet 7 is a siliconized wool strip or a low-friction ethylene propylene diene monomer (EPDM) rubber strip.

[0060] The siliconized wool strip is usually made of soft and durable fiber materials, and its surface is treated with siliconization, having better dust-proof, waterproof and anti-fouling properties. Its unique fiber structure can effectively capture and block dust particles in the air, preventing them from entering the slide rail area, thus keeping the track system clean. The siliconized wool strip also has good elasticity and can closely fit on the side wall of the door leaf and the surface of the flat rail to form a tight dust-proof barrier.

[0061] The low-friction ethylene propylene diene monomer (EPDM) rubber strip is a high-performance rubber material with excellent weather resistance, aging resistance and chemical corrosion resistance. Its low-friction characteristic enables the dust-proof sheet to reduce the frictional resistance between the door leaf and the flat rail during the sliding process, reducing noise and wear. At the same time, the low-friction ethylene propylene diene monomer (EPDM) rubber strip also has good sealing performance and can effectively prevent dust and debris from entering the slide rail area.

[0062] The selection of the siliconized wool strip or the low-friction ethylene propylene diene monomer (EPDM) rubber strip as the material of the dust-proof sheet 7 is based on a comprehensive consideration of various factors such as dust-proof effect, smooth sliding performance, durability and maintenance convenience.

[0063] As a preferred embodiment, in this implementation, a gasket 11 is provided inside the slideway 9, the bolt is arranged inside the slideway 9, and the bolt is located at the bottom of the gasket 11; the gasket 11 is a waterproof gasket or a moisture-proof gasket.

[0064] Providing the gasket 11 inside the slideway 9 can effectively improve the stability and durability of the slideway system. The bolt located at the bottom of the gasket 11 can protect the bolt from rusting during long-term use. The gasket can also fill the small gaps between the slideway and the installation surface, enhance the sealing performance, and prevent impurities such as dust and moisture from entering the inside of the slideway, affecting the smooth operation of the slide rail and the door leaf.

[0065] The presence of the gasket makes the fastening of the bolt more reliable, reducing potential safety hazards caused by bolt loosening. In addition, the replacement of the gasket is relatively easy and can be carried out without disassembling the entire slideway system.

[0066] In one embodiment, hook edge end caps 12 are provided at both ends of the bottom chute of the door leaf 6, and grooves for accommodating the slide rail 5 are provided on the hook edge end caps 12; the slide rail 5 is a stainless steel rail.

[0067] The hook edge end caps 12 are installed at both ends of the bottom chute of the door leaf 6. Their main function is to close the opening of the chute, effectively preventing sundries such as dust and small stones from entering the inside of the chute, thereby protecting the slide rail 5 from pollution and wear and ensuring the smooth sliding of the door leaf.

[0068] The hook edge end caps not only play a closing role but also enhance the connection stability between the chute and the slide rail through their design, reducing the risk of loosening or falling off caused by vibration or external forces.

[0069] The design of the hook edge end caps often matches the overall style of the door leaf. Their delicate appearance and smooth lines can enhance the overall aesthetics of the door leaf, making the door leaf look more upscale and delicate.

[0070] Choosing stainless steel as the material of the slide rail 5 is mainly because stainless steel has excellent corrosion resistance and wear resistance. In harsh environments such as humid and dusty conditions, the stainless steel slide rail can maintain a smooth surface and no rust for a long time, thus ensuring the smooth sliding of the door leaf.

[0071] The stainless steel material has high strength and hardness, and can withstand the gravity and impact force generated during the sliding process of the door leaf, ensuring the stability and safety of the slide rail.

[0072] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application 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 application. Unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0073] It should be noted that in the present application, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device including the said element.

[0074] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A dustproof and stumbling-proof three-push-pull flat rail structure, characterized in that: include: A bottom rail (1), a flat rail one (2) and two flat rail twos (3), wherein the flat rail one (2) is arranged on the bottom rail (1), the bottom rail (1) has a mounting surface (4) for mounting the flat rail two (3), and the two flat rail twos (3) are detachably connected along the width direction of the mounting surface (4); The flat rail 1 (2) and the flat rail 2 (3) are both provided with a slide rail (5), the flat rail 1 (2) and the flat rail 2 (3) are slidably provided with a door leaf (6), the bottom of the door leaf (6) is provided with a slide groove slidably matched with the flat rail 1 (2) or the flat rail 2 (3), and a slider slidably matched with the slide rail (5) is provided inside the slide groove of the door leaf (6); Four dustproof sheets (7) are provided on each of the flat rail 1 (2) and the flat rail 2 (3), and the other end of the dustproof sheet (7) is attached to the door leaf (6) and is used to close the slide groove.

2. A dustproof and stumbling-proof three-push-pull flat rail structure as claimed in claim 1, characterized in that: The flat rail one (2) and the two flat rails two (3) are distributed in sequence along the width direction of the bottom rail (1); The flat rail one (2) and the bottom rail (1) are formed in one piece, and the two flat rails two (3) are arranged on the bottom rail (1) by means of bolts.

3. A dustproof and stumbling-proof three-push-pull flat rail structure as claimed in claim 2, characterized in that: The flat rail 1 (2) and the flat rail 2 (3) are both provided with a receiving groove (8), the upper part of the receiving groove (8) is provided with an opening, the slide rail (5) is arranged inside the receiving groove (8), and the upper end of the slide rail (5) extends to the outside of the opening and is slidably matched with the slider; The flat rail 1 (2) and the flat rail 2 (3) are both provided with a slideway (9), and one end of the bottom of the door leaf (6) extends into the interior of the slideway (9).

4. The dustproof and stumbling-proof three-push-pull flat rail structure according to claim 3, characterized in that: Both sides of the flat rail 1 (2) and the flat rail 2 (3), as well as both sides inside the slideway (9) are provided with slots (10), and four adjacent dustproof sheets (7) are snapped into the corresponding slots, and the other end of the dustproof sheet (7) is in contact with the side wall of the corresponding door leaf (6).

5. The dustproof and stumbling-proof three-push-pull flat rail structure according to claim 4, characterized in that: The dustproof sheet (7) is a siliconized wool strip or a low-friction EPDM rubber strip.

6. The dustproof and stumbling-proof three-push-pull flat rail structure according to claim 3, characterized in that: A gasket (11) is provided inside the slideway (9), the bolt is arranged inside the slideway (9), and the bolt is located at the bottom of the gasket (11); The gasket (11) is a waterproof gasket or a moisture-proof gasket.

7. The dustproof and stumbling-proof three-push-pull flat rail structure according to claim 1, characterized in that: Both ends of the bottom slide groove of the door leaf (6) are provided with hook end covers (12), and the hook end covers (12) are provided with grooves for accommodating the slide rails (5); The slide rail (5) is a stainless steel rail.