Lower rail structure of sliding door and sliding door

Abstract

The utility model relates to the technical field of doors and windows, in particular to a lower rail structure of a sliding door, which comprises a lower rail frame with a base at the bottom and a rail bracket, the rail bracket is provided with a groove part for placing a rail and a positioning chuck arranged through a connecting part, and the base is further provided with a positioning bayonet. The positioning chucks are clamped into the positioning bayonets to fix the rail support on the base, the drainage ports and the drainage through holes are formed in the rail support and the lower rail frame, the overall structure is simple, the design is reasonable, the appearance is exquisite, the rail support is stable and not prone to damage, replacement is convenient when needed, the lower rail structure is flat and not prone to foot mixing, and rainwater can be prevented from flowing backwards; in addition, the utility model further provides a sliding door provided with the lower rail structure, and compared with a traditional sliding door, the sliding door is longer in service life, higher in comfort level and higher in stability, reliability and safety.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of doors and windows, in particular to a lower rail structure of a sliding door and the sliding door. BACKGROUND

[0002] As a common type of door and window in modern buildings, sliding doors are widely used in spaces such as family balconies, kitchens, and partitions. However, traditional sliding doors have many technical defects in actual use.

[0003] The door body of a sliding door is usually heavy and completely relies on the support of the rail of the lower rail structure. Long-term left and right sliding use will cause the rail to bear a huge pressure and be easily deformed. After the rail is deformed, the moving performance of the sliding door will be seriously affected, and the sliding door may be stuck or even completely unable to move, greatly reducing the user experience.

[0004] The rail part of a traditional sliding door with a lower rail structure is fixed in the lower rail frame, and it is extremely difficult to replace the rail part once it is damaged or deformed. At the same time, the existing lower rail structure generally has the problems of unevenness and inconvenience for cleaning, and the protruding rail part also easily causes a safety hazard of tripping of users.

[0005] In addition, a sliding door installed on an outdoor balcony faces severe challenges in severe weather with large wind pressure. Rainwater may flow into the indoor environment under the action of strong wind pressure, affecting the indoor environment and causing trouble to users.

[0006] In view of the above problems, the existing technology needs to be improved. CONTENT OF THE INVENTION

[0007] The purpose of the present application is to provide a lower rail structure of a sliding door and the sliding door, which has the advantages of improving the use stability and safety of the sliding door.

[0008] The present application provides a lower rail structure of a sliding door, and the technical solution is as follows:

[0009] The lower rail structure comprises a lower rail frame, a bottom part of the lower rail frame is provided with a base, and a strip-shaped rail support is further provided. The rail support comprises a groove part for placing a strip-shaped rail, and further comprises a positioning clamp head. The positioning clamp head is vertically arranged on the bottom part of the groove part through a connecting part. The base is provided with a positioning clamp hole, and the positioning clamp head is clamped into the positioning clamp hole to limit and fix the rail support on the base.

[0010] Further, the present application further provides that the positioning clamp hole comprises a U-shaped groove, and a elastic positioning strip is embedded in the U-shaped groove. The elastic positioning strip has a guide structure inside for facilitating the clamping of the positioning clamp head.

[0011] Further, the application also proposes that the U-shaped groove has limiting edges protruding to the middle on both sides; the elastic positioning strip has a sandglass-shaped guiding structure inside, and the shoulder of the elastic positioning strip has a boss matched with the limiting edges; the positioning chuck is spindle-shaped; when the positioning chuck is clamped into the elastic positioning strip, the boss is pressed against the limiting edges on both sides, so that the positioning chuck is firmly limited in the elastic positioning strip and is not easy to come out.

[0012] Further, the application also proposes that the groove part of the strip-shaped track is provided with an extension surface on each side, the bottom surface of the extension surface is provided with a vertical supporting rib for supporting the extension surface, and the bottom of the supporting rib is supported on the base; the side edge of the extension surface and the lower track frame have a gap for drainage.

[0013] Further, the application also proposes that the track support has a height lower than the lower track frame.

[0014] Further, the application also proposes that the track support is provided with a drainage opening at the bottom; the lower track frame on the outdoor side is provided with a drainage through hole at intervals; the bottom edges of the drainage opening and the drainage through hole are on the same horizontal plane of the base, and the area of the drainage through hole is greater than that of the drainage opening, so as to increase the drainage efficiency.

[0015] Further, the application also proposes that the sliding door is a double-layer sliding door structure, and the base is provided with two groups of lower track structures side by side, and a baffle with a height flush with the lower track frame is arranged between the two groups of track supports.

[0016] Further, the application also proposes that the baffle is provided with a drainage through hole at intervals, and the position and area of the drainage through hole of the baffle are consistent with those of the drainage through hole of the lower track frame on the outdoor side.

[0017] Further, the application also proposes that the inner side of the lower track frame and the two sides of the baffle are provided with wool strips.

[0018] Further, the application also proposes that the drainage through hole and the drainage opening are arranged at different positions.

[0019] From the above, the application provides a sliding door lower rail structure and a sliding door, through the design of the unique rail support and positioning clamp structure, the overall structure is simple, reasonable in design, and beautiful in appearance, which not only effectively solves the technical problem of difficult replacement of the track of the traditional sliding door lower rail structure, but also solves the situation that the track support structure is unstable and the track is easy to be damaged, in addition, solves the drainage problem of rainwater backflow in strong wind pressure and rain weather, and avoids the situation that the lower rail structure is uneven and easy to stir the foot, increases the service life and comfort of the sliding door, and has stronger stability, reliability and safety, and the track is convenient to replace. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A lower rail structure of a sliding door provided by the embodiment of the application is shown in the whole schematic view.

[0021] Figure 2 A drainage opening and a drainage through hole of the lower rail structure of the sliding door provided by the embodiment of the application are shown in the schematic view.

[0022] Figure 3 A lower rail frame side view of the lower rail structure of the sliding door provided by the embodiment of the application is shown in the schematic view.

[0023] Figure 4 A rail support side view of the lower rail structure of the sliding door provided by the embodiment of the application is shown in the schematic view.

[0024] In the drawings:

[0025] 1, lower rail frame; 2, rail support; 3, wool; 11, base; 12, baffle; 13, drainage through hole; 21, groove part; 22, support rib; 23, connecting part; 24, drainage opening; 111, positioning clamp; 231, positioning clamp; 1101, U-shaped groove; 1102, elastic positioning strip; 1103, limiting edge. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the application.

[0027] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0028] Sliding doors are widely used in the balcony, kitchen, partition and other positions of the family. The door body of the existing sliding door is usually heavy and needs to be completely supported on the track of the lower rail structure. Due to the self-weight of the door and the long-term left and right sliding use, the track is prone to deformation. After deformation, the sliding door will be jammed or even the door body cannot be moved completely, affecting the user experience. In addition, the track part of the traditional sliding door lower rail structure is fixed in the lower rail frame 1, and it is difficult to replace after damage and deformation. Therefore, there is an urgent need for a sliding door lower rail structure which is convenient to replace the track.

[0029] Please refer to Figure 1 : The utility model provides a kind of lower rail structure of sliding door, including base 11 on lower rail frame 1 and track bracket 2, track bracket 2 has recess portion 21 of bar track and is fixed by the interlocking of positioning chuck 231 and positioning chuck 111 on base 11.The track bracket 2 can be conveniently replaced by being disassembled from base 11 when the track is deformed or damaged, so as to solve the problem that the track of traditional sliding door is difficult to replace after deformation.

[0030] Track bracket 2 is one of the core components of the sliding door lower rail structure. Track bracket 2 includes recess portion 21 for placing bar track, which ensures the stability of the track. Positioning chuck 231 is vertically arranged at the bottom of recess portion 21 through connecting portion 23. Base 11 is provided with positioning chuck 111, and positioning chuck 231 is clamped into positioning chuck 111, so that track bracket 2 is limited and fixed on base 11. In this way, when the track is deformed or damaged, the track bracket 2 can be conveniently disassembled from the base 11 for replacement.

[0031] Compared with the prior art, the sliding door lower rail structure of the present application has significant advantages. The track part of the traditional sliding door is fixed in the lower rail frame 1, and it is difficult to replace after damage and deformation. By providing track bracket 2 and positioning chuck 231, the track bracket 2 can be conveniently disassembled from the base 11 for replacement, solving the problem that the track is difficult to replace after deformation. In addition, the track bracket 2 of the present application is clamped and fixed with the positioning chuck 111 on the base 11 through the positioning chuck 231, which ensures the stability of the track bracket 2 and avoids the loosening and falling of the track during the use of the sliding door.

[0032] Please refer to Figure 1 : In some of the above embodiments, there is also the problem of stable clamping between the positioning chuck 231 and the positioning chuck 111.

[0033] To this end, the present application further proposes that the positioning chuck 111 comprises a U-shaped groove 1101, and a elastic positioning strip 1102 is embedded in the U-shaped groove 1101, and the elastic positioning strip 1102 has a guide structure inside for facilitating clamping of the positioning chuck 231.

[0034] By providing the U-shaped groove 1101 in the positioning chuck 111, a basic clamping structure is provided. The elastic positioning strip 1102 embedded in the U-shaped groove 1101 increases the firmness and stability of clamping. The guide structure inside the elastic positioning strip 1102 enables the positioning chuck 231 to be clamped more smoothly, thereby ensuring stable clamping between the positioning chuck 231 and the positioning chuck 111. Through the mutual cooperation of these technical features, the problem of stable clamping between the positioning chuck 231 and the positioning chuck 111 is solved.

[0035] Specifically, the design of the U-shaped groove 1101 provides a stable clamping position for the positioning chuck 231. The provision of the elastic positioning strip 1102 enables the positioning chuck 231 to be subjected to a certain elastic extrusion during clamping, thereby enhancing the stability of clamping. The guide structure enables the positioning chuck 231 to smoothly enter the predetermined position during clamping, reducing the resistance and error during clamping.

[0036] As a preferred embodiment, the elastic positioning strip 1102 can be made of different materials, such as rubber, elastic plastic, etc., to adapt to different use environments and requirements. The guide structure can be designed in different shapes of small on top and large on the bottom to further optimize the clamping effect.

[0037] Thus, by providing the U-shaped groove 1101, the elastic positioning strip 1102 and the guide structure inside it, the present application not only solves the problem of stable clamping between the positioning chuck 231 and the positioning chuck 111, but also improves the reliability and durability of clamping. Compared with the prior art, the technical solution of the present application has the advantages of simple structure, easy manufacturing and installation, long service life, etc.

[0038] Please refer to Figure 1 : In some of the above embodiments, there is also the problem of ensuring the firmness of the positioning chuck 231 while being detachably installed, specifically, the problem of easy clamping but not easy to come out of the positioning chuck 231 needs to be solved.

[0039] To this end, the application further proposes that the U-shaped groove 1101 has limiting edges 1103 protruding towards the middle on both sides of the groove opening; the elastic positioning strip 1102 has a sandglass-shaped guiding structure inside, and the two side shoulders of the elastic positioning strip 1102 have protrusions that cooperate with the limiting edges 1103; the positioning chuck 231 is spindle-shaped; when the positioning chuck 231 is clamped into the elastic positioning strip 1102, the protrusions are pressed against the two limiting edges 1103, so that the positioning chuck 231 is firmly limited in the elastic positioning strip 1102 and is not easy to come out. At the same time, since the elastic positioning strip 1102 has a certain elasticity, when a person pulls the positioning chuck 231 upwards from the elastic positioning strip 1102 with force, the elastic positioning strip 1102 deforms, and when the force is sufficient, the positioning chuck 231 can be pulled out, realizing disassembly to facilitate track replacement.

[0040] Through the design of the limiting edges 1103 on both sides of the U-shaped groove 1101 groove opening, the transverse movement of the positioning chuck 231 is limited. The sandglass-shaped guiding structure inside the elastic positioning strip 1102 enables the positioning chuck 231 to be guided to the correct position when inserted. The protrusions on the two side shoulders of the elastic positioning strip 1102 cooperate with the limiting edges 1103, further enhancing the stability of the positioning chuck 231. The spindle-shaped design of the positioning chuck 231 cooperates with the sandglass-shaped structure of the elastic positioning strip 1102 to make the clamping process of the two more smooth, and after the clamping is completed, the cooperation of the two is more firm and stable, and the spindle-shaped design enables the positioning chuck 231 to more evenly distribute pressure when under stress. When the positioning chuck 231 is clamped into the elastic positioning strip 1102, the protrusions are pressed and abut against the limiting edges 1103, so that the positioning chuck 231 is firmly limited in the elastic positioning strip 1102 and is not easy to come out. Through the above structural design, the problem of the firmness of the positioning chuck 231 in the push-pull door lower rail structure is solved, making the positioning chuck 231 easy to clamp but not easy to come out, ensuring the stability and durability of the track bracket 2.

[0041] Specifically, the limiting edges 1103 on both sides of the U-shaped groove 1101 groove opening can be manufactured through a mold forming process, ensuring its dimensional accuracy and strength. The sandglass-shaped guiding structure of the elastic positioning strip 1102 can be manufactured through an extrusion forming process, making it have good elasticity and guiding performance. The spindle-shaped design of the positioning chuck 231 can be manufactured through an injection molding process, ensuring its smooth surface and dimensional accuracy. The cooperation of the protrusions and the limiting edges 1103 can be realized through precise mold design and manufacturing process, ensuring firm clamping. As a preferred embodiment, the elastic positioning strip 1102 can be made of high-strength elastic materials such as silicone or polyurethane to improve its durability and elastic recovery ability.

[0042] Therefore, the application solves the problem of the firmness of the positioning clamping head 231 in the lower rail structure of the sliding door through the limiting edges 1103 on both sides of the U-shaped groove 1101, the hourglass-shaped guiding structure of the elastic positioning strip 1102, the boss on both sides of the elastic positioning strip 1102, and the spindle-shaped design of the positioning clamping head 231. Compared with the prior art, the technical scheme of the application not only ensures the firmness and stability of the positioning clamping head 231, but also makes the installation process of the positioning clamping head 231 more smooth, avoiding the problem of affecting the use experience of the sliding door due to the deformation of the rail or the disengagement of the positioning clamping head 231. Through optimization design, the lower rail structure of the sliding door has higher stability and durability, ensuring the reliability of the sliding door in long-term use.

[0043] Please refer to Figure 1 In some embodiments described above, there are also problems of unevenness of the rail part, easy to stir feet, and prevention of water accumulation.

[0044] To this end, the application further provides that each of the two sides of the groove part 21 for installing the rail is provided with an extension surface, the bottom surface of the extension surface is provided with a vertical supporting rib 22 for supporting the extension surface, the bottom of the supporting rib 22 is supported on the base 11, and the side edge of the extension surface and the lower rail frame 1 have a gap for drainage.

[0045] By arranging the extension surface and the vertical supporting rib 22, the rail part is more even, and the problem of easy stirring feet due to unevenness of the rail part in the traditional lower rail structure of the sliding door is avoided. The gap between the side edge of the extension surface and the lower rail frame 1 is used for drainage, which helps to keep the rail clean and avoids water accumulation affecting the use experience. Specifically, the extension surface is supported on the base 11 by the vertical supporting rib 22, so that the entire rail part is more stable and even, and the gap between the side edge of the extension surface and the lower rail frame 1 provides a channel for drainage.

[0046] The vertical supporting rib 22 can be made of various materials and shapes, such as a metal supporting rib 22 or a plastic supporting rib 22, and can be cylindrical, square, etc., as long as it can effectively support the extension surface. The number and spacing of the supporting ribs 22 can be adjusted according to the length of the rail and the required supporting strength. The gap between the extension surface and the lower rail frame 1 can be designed to a certain width to ensure smooth drainage and prevent water accumulation.

[0047] Through the above technical scheme, the application effectively solves the problems of unevenness of the rail part and easy stirring feet of the existing sliding door. At the same time, through the drainage gap between the extension surface and the lower rail frame 1, the problem of water accumulation in the rail part is further solved, and the use experience and durability of the sliding door are improved. Compared with the prior art, the technical scheme provided by the application not only improves the use safety and convenience of the sliding door, but also enhances its adaptability in different environments.

[0048] Please refer to Figure 1 : In some of the above embodiments, there is also the problem of the track portion being higher than the lower rail frame 1 causing tripping.

[0049] To this end, the present application further proposes a sliding door comprising the above-mentioned lower rail structure, wherein the height of the track bracket 2 is lower than that of the lower rail frame 1. Through this design, the height of the track bracket 2 is lower than that of the lower rail frame 1, so that the track portion does not protrude out of the lower rail frame 1, thereby avoiding the problem of tripping. In addition, the track bracket 2 is more stable during installation and use, prolonging the service life of the sliding door.

[0050] The core feature of this design is that the height of the track bracket 2 is lower than that of the lower rail frame 1, which ensures that the track does not protrude out of the lower rail frame 1, thereby avoiding the risk of the user tripping over the track when using the sliding door. This design not only improves the safety of the sliding door, but also makes the use of the sliding door more convenient and comfortable.

[0051] Further, the track bracket 2 of the present application can be implemented in various ways. For example, the installation method of the track bracket 2 can be diversified, and it can be installed through buckles, screws or other fixing methods to ensure its firmness.

[0052] Through the above technical solution, the present application effectively solves the problem of the track portion being higher than the lower rail frame 1 in the existing sliding door lower rail structure, which causes tripping. Compared with the prior art, the sliding door lower rail structure of the present application is more reasonable in design, safer in use and more convenient in installation. Therefore, the present application not only improves the safety performance of the sliding door, but also prolongs its service life and improves the user's experience.

[0053] Please refer to Figures 2-4 : In some of the above embodiments, there is also the problem of the quick drainage of water in the sliding door lower rail structure.

[0054] To this end, the present application further proposes that the track bracket 2 is provided with a drainage port 24 at the bottom; the lower rail frame 1 located on the outdoor side is provided with a drainage through hole 13 at intervals; the bottom edges of the drainage port 24 and the drainage through hole 13 are located on the same horizontal plane of the base 11, and the area of the drainage through hole 13 is greater than that of the drainage port 24, thereby increasing the drainage efficiency.

[0055] The bottom of the track bracket 2 is provided with drainage openings 24 at intervals to ensure smooth drainage of water. The lower rail frame 1 on the outdoor side is provided with drainage holes 13 at intervals to further help the smooth drainage of water. The bottom edges of the drainage openings 24 and the drainage holes 13 are located on the same horizontal plane to ensure smooth water flow without water accumulation. The area of the drainage holes 13 is larger than that of the drainage openings 24. The drainage openings 24 are limited by the height of the track bracket 2 and have a small opening area to ensure the stability of the track bracket 2. The drainage holes 13 of the lower rail frame 1 have a larger area and can drain more water in a unit of time, increasing the drainage efficiency and preventing water accumulation, thereby effectively solving the problem of rapid drainage of accumulated water in the lower rail structure of the sliding door.

[0056] The specific position of the drainage openings 24 at the bottom of the track bracket 2 can be the connection part 23 at the bottom of the supporting rib 22 and the positioning chuck 231. The drainage openings 24 and the drainage holes 13 can be formed at one time by a mold or realized by post-processing such as drilling or punching. The interval of the drainage openings 24 and the drainage holes 13 can be adjusted according to the actual precipitation and drainage demand of the use environment. The area of the drainage holes 13 can be controlled by selecting appropriate mold sizes or processing tools to ensure the maximization of drainage efficiency. Further, a filter screen or insect screen can be installed at the drainage openings 24 and the drainage holes 13 to prevent debris or insects from entering the drainage system and affecting the drainage effect.

[0057] The present application solves the problem of rapid drainage of accumulated water in the lower rail structure of the sliding door by arranging the drainage openings 24 and the drainage holes 13 at intervals on the bottom of the track bracket 2 and the lower rail frame 1 and making their bottom edges on the same horizontal plane. Compared with the prior art, the technical scheme of the present application not only improves the drainage efficiency but also prevents water accumulation, further improving the service life of the sliding door and the user experience.

[0058] Please refer to Figure 1 In some embodiments described above, there is also a problem of stability and flatness of the lower rail structure of the double-layer sliding door.

[0059] To this end, the present application further proposes that the sliding door is a double-layer sliding door structure, and two groups of lower rail structures are arranged side by side on the base 11, and a baffle 12 flush with the height of the lower rail frame 1 is arranged between the two groups of track brackets 2.

[0060] The sliding door adopts a double-layer sliding door structure, and two groups of lower rail structures are arranged side by side on the base 11. By arranging a baffle 12 flush with the height of the lower rail frame 1 between the two groups of track brackets 2, the stability of the lower rail structure and the overall flatness are enhanced, and the feet are not easy to be mixed. Through this design, the problem of insufficient stability and uneven feet in the use process of the double-layer sliding door is solved.

[0061] Specifically, the height of the baffle 12 is flush with the lower rail frame 1. Through this design, the problem of foot stirring caused by uneven tracks during the use of the double-layer sliding door can be effectively prevented. The baffle 12 can be made of the same or similar material as the lower rail frame 1 and be integrally formed with the lower rail frame 1, ensuring that it has sufficient strength and durability. In addition, the position of the baffle 12 can be adjusted according to actual needs to adapt to sliding doors of different sizes and structures. As a preferred embodiment, the baffle 12 can also be fixed on the base 11 by screws, buckles, or other means to ensure its stability and firmness.

[0062] Therefore, by setting the baffle 12 flush with the height of the lower rail frame 1, the stability and flatness of the lower rail structure of the double-layer sliding door are significantly improved, the problem of foot stirring caused by uneven tracks in traditional designs is avoided, and the user's experience is improved. Compared with the prior art, the technical solution provided by the present application not only has a simple structure and is easy to implement, but also has high stability and flatness, and can effectively solve the common problems of double-layer sliding doors during use.

[0063] Similarly, by arranging multiple groups of lower rail structures side by side on the base 11 and arranging baffles 12 flush with the height of the lower rail frame 1 between every two groups of track supports 2, the design of a multi-layer sliding door can be realized. Compared with the prior art, this technical solution not only has a simple structure and is easy to implement, but also has high stability and flatness, and can effectively solve the common problems of multi-layer sliding doors during use.

[0064] Please refer to Figures 2-3 In some embodiments described above, the double-layer sliding door also has the problem of water accumulation caused by poor drainage.

[0065] To this end, the present application further provides that the baffle 12 is provided with drainage holes 13 at intervals, and the position and area of the drainage holes 13 are consistent with those of the drainage holes 13 of the lower rail frame 1 on the outdoor side.

[0066] The present application achieves efficient drainage by arranging drainage holes 13 at intervals on the baffle 12 and ensuring that the positions and areas of these drainage holes 13 are consistent with those of the drainage holes 13 of the lower rail frame 1 on the outdoor side. These features ensure that the positions and areas of the drainage holes 13 in the double-layer sliding door structure are consistent on the baffle 12 and the lower rail frame 1, avoiding the problem of water accumulation caused by poor drainage. Through such a design, the drainage efficiency can be improved, water accumulation can be prevented, and the normal use of the sliding door and the dryness of the indoor environment can be ensured.

[0067] Specifically, the technical solution of the present application solves the problem of poor drainage in the double-layer sliding door structure by setting drainage holes 13 on the baffle 12 that are consistent with the drainage holes 13 of the lower rail frame 1. The position and area of the drainage holes 13 remain consistent, allowing water to flow smoothly and avoiding the problem of water blockage caused by poor drainage hole 13 settings. As a result, even in heavy rain, the double-layer sliding door can quickly drain the accumulated water and maintain a dry indoor environment.

[0068] As a preferred embodiment, multiple drainage holes 13 can be spaced apart at different positions of the baffle 12 to further improve the drainage effect. For example, drainage holes 13 can be provided at the upper, middle and lower parts of the baffle 12 to ensure that the drainage holes 13 cover the entire baffle 12 area, thereby achieving more uniform and efficient drainage.

[0069] Through the above technical solution, the double-layer sliding door structure provided by the present application has significant advantages in terms of drainage. Compared with the prior art, the design of the present application can effectively avoid the problem of accumulated water, improve the drainage efficiency, and ensure the normal use of the sliding door and the dryness of the indoor environment.

[0070] Please refer to Figure 1 In some of the above embodiments, there is also the problem of how to improve the sealing effect and prevent dust, rainwater, etc. from entering the indoor environment.

[0071] To this end, the present application further proposes that the inner side of the lower rail frame 1 and the two sides of the baffle 12 are provided with wool strips 3.

[0072] By providing wool strips 3 on the inner side of the lower rail frame 1 and the two sides of the baffle 12, these wool strips 3 can effectively fill the gap between the lower rail frame 1 and the baffle 12, thereby improving the sealing effect and preventing dust, rainwater, etc. from entering the indoor environment. The provision of wool strips 3 can also reduce the friction noise of the sliding door when moving, improving the user's experience.

[0073] The wool strips 3 can be made of wear-resistant and anti-aging materials such as polyester fiber or nylon to ensure their stability and durability during long-term use. The installation of the wool strips 3 can be done by pasting, buckling or embedding, etc. The specific method can be selected according to the actual application requirements. For example, the wool strips 3 can be pasted on the inner side of the lower rail frame 1 and the two sides of the baffle 12 to ensure their firm fixation and prevent them from falling off. As a preferred embodiment, the height and density of the wool strips 3 can be adjusted according to the size of the gap between the lower rail frame 1 and the baffle 12 to achieve the best sealing effect.

[0074] The application effectively solves the sealing problem of the lower rail frame 1 and the baffle 12 of the sliding door by arranging the wool 3 on the inner side of the lower rail frame 1 and on both sides of the baffle 12. Compared with the prior art, the technical scheme of the application not only improves the sealing performance of the sliding door to prevent dust, rainwater and the like from entering the indoor, but also reduces the friction noise of the sliding door during movement, and improves the user experience. Therefore, the application provides a more practical and efficient lower rail structure of a sliding door.

[0075] Please refer to Figure 1 In some of the above embodiments, there is also a problem that in rainy and windy weather, when the wind pressure is large, the drainage is not smooth, and rainwater flows back into the room.

[0076] To this end, the application further provides that the drainage through hole 13 and the drainage opening 24 are respectively arranged in a staggered manner.

[0077] The technical feature that the drainage through hole 13 and the drainage opening 24 are arranged in a staggered manner can effectively solve the problem of water accumulation or poor drainage during the drainage process due to the alignment of the positions when the wind pressure is large, and even the problem of water backflow, thereby improving the drainage efficiency and preventing the rainwater from flowing back into the room when the wind pressure is large, and improving the user experience.

[0078] Specifically, the staggered arrangement of the drainage through hole 13 and the drainage opening 24 can be realized in various ways. For example, the drainage through hole 13 can be arranged on one side of the base 11, and the drainage opening 24 can be arranged on the other side of the base 11 or at a different height. As a preferred embodiment, the area of the drainage through hole 13 can be designed to be larger than that of the drainage opening 24, so as to further increase the flow rate of the water flow when the wind pressure is large, and ensure the smooth drainage. In addition, the shapes of the drainage through hole 13 and the drainage opening 24 can also be optimized according to actual needs to achieve better drainage effect.

[0079] Therefore, the application solves the problems of poor drainage and rainwater backflow in the prior art by arranging the drainage through hole 13 and the drainage opening 24 in a staggered manner. Compared with the prior art, the technical scheme of the application not only improves the drainage efficiency, but also effectively prevents the rainwater from flowing back, improves the user experience, and has significant practical value.

[0080] The above only describes the embodiments of the application and is not used to limit the protection scope of the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A lower track structure for a sliding door, comprising a lower track frame, wherein a base is provided at the bottom of the lower track frame, characterized in that, It also includes a strip track bracket, the track bracket including a groove for placing the strip track, the track bracket also including a positioning clip, the positioning clip being set perpendicular to the bottom of the groove via a connecting part, the base having a positioning slot, the positioning clip engaging with the positioning slot to limit and fix the track bracket on the base.

2. The lower track structure of the sliding door as described in claim 1, characterized in that, The positioning slot includes a U-shaped groove, in which an elastic positioning strip is embedded. The elastic positioning strip has a guide structure inside that facilitates the engagement of the positioning head.

3. The lower track structure of the sliding door as described in claim 2, characterized in that, The U-shaped groove has limiting edges protruding towards the center on both sides; the interior of the elastic positioning strip has an hourglass-shaped guide structure, and the shoulders of the elastic positioning strip have protrusions that cooperate with the limiting edges; the positioning head is spindle-shaped; when the positioning head is engaged with the elastic positioning strip, the protrusions are squeezed and resisted by the limiting edges on both sides, so that the positioning head is firmly confined within the elastic positioning strip and is not easy to fall out.

4. The lower track structure of the sliding door as described in claim 1, characterized in that, An extension surface is provided on each side of the groove for placing the strip track. The bottom surface of the extension surface is provided with a vertical support rib for supporting the extension surface, and the bottom of the support rib is supported on the base. There is a gap for drainage between the side of the extension surface and the lower rail frame.

5. A sliding door, characterized in that, The sliding door includes a lower track structure as described in any one of claims 1 to 4, wherein the height of the track support is lower than the lower track frame.

6. The sliding door as described in claim 5, characterized in that, The bottom of the track support is provided with drainage outlets at intervals; the lower rail frame on the outdoor side is provided with drainage through holes at intervals; the bottom edges of the drainage outlets and the drainage through holes are on the same horizontal plane of the base, and the area of ​​the drainage through holes is larger than that of the drainage outlets, thereby increasing drainage efficiency.

7. The sliding door as described in claim 6, characterized in that, The sliding door is a double-layer sliding door structure. Two sets of lower rail structures are arranged side by side on the base, and a baffle that is flush with the height of the lower rail frame is provided between the two sets of rail supports.

8. The sliding door as described in claim 7, characterized in that, The baffle is provided with drainage holes at intervals, and the position and area of ​​the drainage holes of the baffle are consistent with the drainage holes of the lower rail frame on the outdoor side.

9. The sliding door as described in claim 8, characterized in that, The inner side of the lower rail frame and both sides of the baffle are provided with brush strips.

10. The sliding door as described in claim 6 or 8, characterized in that, The drainage through hole and the drainage outlet are respectively offset.

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