Three-rail sliding door

Abstract

The utility model belongs to the technical field of doors and windows, and discloses a three-rail sliding door which is composed of a door frame assembly, a plurality of sealing assemblies and three door leaf assemblies, the door frame assembly comprises a longitudinal frame and a transverse frame, the longitudinal frame and the transverse frame define a containing space, the three door leaf assemblies are arranged in the space in parallel and connected with the transverse frame in a sliding mode, and the sealing assemblies are arranged on the door leaf assemblies. When the door is closed, the sealing assemblies are attached to the gaps between the opposite door leaf assemblies, all the sealing assemblies cooperatively fill up all the gaps, dust and rainwater are effectively blocked, the indoor space is kept dry and clean, meanwhile, sound transmission is powerfully blocked, external noise is isolated, the living comfort is greatly improved, in addition, the overall sealing performance of the sliding door is enhanced, and the service life of the sliding door is prolonged. And better use experience is brought to the user.

Description

TECHNICAL FIELD

[0001] The utility model relates to door and window technical field, especially a three track sliding door. BACKGROUND

[0002] In the current building door and window field, sliding door is widely used as a common partition device, however, the existing sliding door technology has obvious defects, when the sliding door is closed, the relative two door leaves are difficult to realize close adhesion, and a certain width gap is left, in daily use, dust will continuously invade the indoor through the gap with air flow, increase cleaning difficulty, affect indoor air quality, and when it rains, rainwater is also easy to pour into the door, threaten indoor floor and furniture safety, at the same time, external traffic, human voice and other noises can easily pass through the gap, cannot create a quiet and comfortable environment for the indoor, greatly reduce the living experience. SUMMARY

[0003] The utility model discloses a three track sliding door, which aims to solve the technical problems of the existing sliding door, such as the existence of a gap between the relative door leaves when the door is closed, which allows dust, rainwater and other debris to easily enter the indoor, and the inability to effectively isolate external sounds.

[0004] In order to achieve the above-mentioned utility model purposes, the utility model provides a three track sliding door, which comprises a door frame assembly, a plurality of sealing assemblies and three door leaf assemblies.

[0005] The door frame assembly comprises longitudinally arranged longitudinal frames and transversely arranged horizontal frames, and the longitudinal frames and the horizontal frames form a containing space.

[0006] The three door leaf assemblies are arranged in parallel and opposite to each other in the containing space, and the door leaf assemblies are slidingly connected to the horizontal frames.

[0007] The sealing assemblies are arranged on the door leaf assemblies, and when the three track sliding door is in a closed state, the sealing assemblies on each door leaf assembly are in close contact with each other between the opposite door leaf assemblies.

[0008] Further, the longitudinal frames and the horizontal frames have the same structure, the horizontal frames comprise first frames and second frames, the first frames and the second frames are hollow structures, the first frames are connected to the second frames through a buckle assembly, and the length of the second frames is equal to half the length of the first frames.

[0009] Further, the buckle assembly comprises first clamping parts and second clamping parts, the first clamping parts and the second clamping parts form a specified interval, and the first clamping parts and the second clamping parts are separate parts.

[0010] Further, the two ends of the first clamping part are clamped on the first and second frames respectively, so that the middle part of the first clamping part is in a character-shaped structure, and the two ends of the second clamping part are clamped on the first and second frames respectively, so that the middle part of the second clamping part protrudes away from the first clamping part, forming a V-shaped structure with the top end of the first clamping part being parallel to each other.

[0011] Further, the first frame is provided with a first bending part away from the buckle assembly, and the first bending part is located on the side of the first frame away from the door leaf assembly, the second frame is provided with a second bending part away from the buckle assembly, and the second bending part is located on the side of the second frame away from the door leaf assembly, the first bending part and the second bending part are oppositely arranged and form a buckle slot for clamping a mounting clamping plate, so that the door frame assembly is bolted to the wall through the mounting clamping plate.

[0012] Further, the longitudinal frame includes a left frame and a right frame, and the door leaf assembly includes a first door leaf, a second door leaf and a third door leaf arranged in sequence from the indoor side to the outdoor side.

[0013] The first door leaf is provided with oppositely arranged first handles and a first anti-collision block on the side close to the left frame, the first handles are located on the side of the first door leaf close to the indoor side, and the first anti-collision block is located on the side of the first door leaf close to the outdoor side, the second door leaf is provided with a second anti-collision block on the side close to the left frame, and the second anti-collision block is located on the side of the second door leaf close to the outdoor side, and the third door leaf is provided with second handles on the side close to the right frame, and the second handles are located on the side of the third door leaf close to the indoor side.

[0014] Further, the sealing assembly includes a first sealing part, a second sealing part, a third sealing part and a fourth sealing part.

[0015] The first sealing part is arranged on the side of the first door leaf close to the right frame, the second sealing part is arranged on the side of the second door leaf close to the left frame, the third sealing part is arranged on the side of the second door leaf close to the right frame, so that the second sealing part and the third sealing part are oppositely arranged, and the fourth sealing part is arranged on the side of the third door leaf close to the left frame, wherein, when the three-rail sliding door is in a closed state, the first door leaf and the second door leaf are oppositely arranged, so that the first sealing part and the second sealing part are attached to each other between the first door leaf and the second door leaf, and the second door leaf and the third door leaf are oppositely arranged, so that the third sealing part and the fourth sealing part are attached to each other between the second door leaf and the third door leaf.

[0016] Furthermore, the sealing assembly includes a hook-and-loop adhesive strip and a hook-and-loop fastener, wherein the hook-and-loop adhesive strip includes a bent portion and an adhesive strip bonding portion integrally connected to the bent portion;

[0017] The bent portion of the adhesive strip is connected to the end of the door panel assembly. The adhesive strip fitting portion is disposed on the opposite sides of the two door panel assemblies. The hook fastener includes a first fixed bent portion, a second fixed bent portion, and a fixed fitting portion. The first fixed bent portion is snapped onto the end of the door panel assembly on the side opposite to where the bent portion of the adhesive strip is disposed. The fixed fitting portion is connected to the adhesive strip fitting portion by a first bolt. The second fixed bent portion is connected between the first fixed bent portion and the fixed fitting portion. The second fixed bent portion is located at the opening at the end of the door panel assembly and is snapped onto the bent portion of the adhesive strip. The first fixed bent portion, the second fixed bent portion, and the fixed fitting portion are integral parts.

[0018] Furthermore, the sealing assembly also includes a hook-and-groove fastener, which is connected to the second fixed bend portion by a second bolt, and the width of the hook-and-groove fastener is the same as the width of the second fixed bend portion.

[0019] Furthermore, the glass in the door panel assembly is insulated glass, and the door frame assembly is made of thermally broken aluminum profile.

[0020] Beneficial effects:

[0021] This utility model discloses a three-track sliding door, comprising a door frame assembly, multiple sealing components, and three door leaf assemblies. The door frame assembly includes adjacent longitudinal and transverse side frames, which together form an accommodating space. The three door leaf assemblies are arranged parallel to each other and opposite to each other within the accommodating space, and are slidably connected to the transverse side frames. The sealing components are disposed on the door leaf assemblies. When the three-track sliding door is closed, the sealing components on each door leaf assembly are mutually abutted between the opposing door leaf assemblies. Therefore, by abutting the sealing components within the gaps between opposing door leaf assemblies in the closed state, when the sliding door is closed, the sealing components cooperate to fill all gaps between the door leaves, ensuring that the indoor environment is not disturbed by external dust and rain, keeping the interior clean and dry, and significantly blocking sound transmission channels, effectively isolating external sound, improving living comfort, and thus enhancing the overall sealing performance of the sliding door. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a three-track sliding door according to an embodiment of the present invention;

[0023] Figure 2 This is an embodiment of the present utility model.Figure 1 S-01 sectional view;

[0024] Figure 3 This is an embodiment of the present utility model. Figure 2 Enlarged view of a portion at point A;

[0025] Figure 4 This is an embodiment of the present utility model. Figure 1 Sectional view of S-02;

[0026] Figure 5 This is an embodiment of the present utility model. Figure 2 Partial schematic diagram;

[0027] Figure 6 This is an embodiment of the present utility model. Figure 4 A partial schematic diagram.

[0028] in:

[0029] 1. Door frame assembly; 3. Door leaf assembly;

[0030] 10. Vertical border; 11. Horizontal border; 12. Snap-on assembly;

[0031] 101. Left border; 102. Right border;

[0032] 110. First frame; 111. Second frame; 112. First bend; 113. Second bend; 114. Mounting plate; 115. Top frame; 116. Bottom frame;

[0033] 120. First locking part; 121. Second locking part;

[0034] 20. First sealing part; 21. Second sealing part; 22. Third sealing part; 23. Fourth sealing part; 26. Hook and pin coupling; 27. First bolt; 28. Second bolt;

[0035] 240. Bending part of the adhesive strip; 241. Adhesive strip bonding part;

[0036] 250. First fixed bending part; 251. Second fixed bending part; 252. Fixed fitting part;

[0037] 30. First door leaf; 31. Second door leaf; 32. Third door leaf; 33. First handle; 34. First anti-collision block; 35. Second anti-collision block; 36. Second handle.

[0038] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0039] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0040] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] Reference Figures 1-6 This embodiment provides a three-track sliding door, including a door frame assembly 1, multiple sealing assemblies and three door leaf assemblies 3;

[0044] The door frame assembly 1 includes a vertical frame 10 and a horizontal frame 11 arranged adjacent to each other, and the vertical frame 10 and the horizontal frame 11 together form an accommodating space;

[0045] The three door leaf components 3 are arranged parallel to each other and opposite to each other in the receiving space, and the door leaf components 3 are slidably connected to the horizontal frame 11;

[0046] The sealing components are disposed on the door leaf assembly 3. When the three-track sliding door is in the closed state, the sealing components on each door leaf assembly 3 are fitted together between the opposite door leaf assemblies 3.

[0047] In the above embodiment, the three-track sliding door includes a door frame assembly 1, multiple sealing assemblies, and three door leaf assemblies 3. The door frame assembly 1 is the overall frame of the three-track sliding door, providing an installation base for other components. The door frame assembly 1 consists of longitudinal side frames 10 and transverse side frames 11, which enclose a space for installing the door leaf assemblies 3. There are two longitudinal side frames 10 and two transverse side frames 11, which are arranged opposite each other to form a stable frame structure. The three door leaf assemblies 3 are placed parallel to each other within the space of the door frame assembly 1 and are slidably connected to the bottom track of the transverse door frame via a bottom pulley device to achieve smooth opening and closing. The door leaf assembly 3 consists of a door leaf frame and door leaf glass, with the door leaf glass connected to the door leaf frame. The glass inside the door panel 3 is double-glazed, and the door frame assembly 1 is made of thermally broken aluminum profile. Alternatively, the door frame assembly 1 can also be made of PVC or wood, giving the entire sliding door excellent thermal insulation performance. The sealing components are installed on the door panel 3. Therefore, by fitting the sealing components into the gaps between the opposite door panel assemblies 3 when the sliding door is closed, the various sealing components work together to fill all the gaps between the door panels, ensuring that the indoor environment is not disturbed by external dust and rain, keeping the indoor environment clean and dry, and greatly blocking the sound transmission channel, effectively isolating external sound, improving living comfort, and thus improving the overall sealing performance of the sliding door.

[0048] Reference Figure 1 , Figure 6 In one embodiment, the vertical border 10 and the horizontal border 11 have the same structure. The horizontal border 11 includes a first border 110 and a second border 111. The first border 110 and the second border 111 are hollow structures. The first border 110 and the second border 111 are connected by a snap-fit ​​assembly 12. The length of the second border 111 is equal to half the length of the first border 110.

[0049] In the above embodiment, the vertical frame 10 and the horizontal frame 11 have the same structure. The part where the vertical frame 10 and the horizontal frame 11 have the same structure is the part without the locking protrusion and the slide rail, which provides a stable support structure for the door leaf. Taking the horizontal frame 11 as an example, the horizontal frame 11 is specifically composed of a first frame 110 and a second frame 111. Both of them adopt a hollow structure, which effectively reduces the overall weight while ensuring that the frame has sufficient strength, thus helping to reduce material costs. The first frame 110 and the second frame 111 are connected by a special snap-fit ​​component 12, so that the two form a complete horizontal frame 11. The length of the second frame 111 is half that of the first frame 110, which makes more rational use of materials, reduces material waste, and lowers production costs. At the same time, the connection method of the snap-fit ​​component 12 improves the assembly efficiency.

[0050] Reference Figure 1 , Figure 6 In one embodiment, the latching assembly 12 includes a first latching portion 120 and a second latching portion 121, wherein a specified interval is formed between the first latching portion 120 and the second latching portion 121, and the first latching portion 120 and the second latching portion 121 are separate parts.

[0051] In the above embodiments, the snap-fit ​​assembly 12 is a key component for connecting the first frame 110 and the second frame 111. It consists of a first snap-fit ​​part 120 and a second snap-fit ​​part 121. The first snap-fit ​​part 120 and the second snap-fit ​​part 121 are separate parts, forming a specific interval between them for ease of manufacturing. During connection, both ends of the first snap-fit ​​part 120 accurately snap into the corresponding slots or grooves of the first frame 110 and the second frame 111, forming a straight middle section between the frames. This straight structure can, to a certain extent, restrict the relative movement of the frames and provide initial stability. The connection stability of the first step; the second snap-fit ​​part 121 also snaps its two ends into the first frame 110 and the second frame 111. Its unique design makes the middle part protrude away from the first snap-fit ​​part 120, forming a V-shaped structure with the top parallel to the first snap-fit ​​part 120. The two sloping sides of the V-shaped structure are in close contact with the frame, and its shape characteristics generate a greater clamping force, further enhancing the firmness of the frame connection. Together with the first snap-fit ​​part 120, it ensures that the first frame 110 and the second frame 111 are tightly connected, enhancing the reliability and stability of the connection and forming a stable frame as a whole.

[0052] Reference Figure 1 , Figure 6In one embodiment, a first bend 112 is provided on the side of the first frame 110 away from the buckle assembly 12, and the first bend 112 is located on the side of the first frame 110 away from the door leaf assembly 3. A second bend 113 is provided on the side of the second frame 111 away from the buckle assembly 12, and the second bend 113 is located on the side of the second frame 111 away from the door leaf assembly 3. The first bend 112 and the second bend 113 are arranged opposite to each other and form a buckle groove for engaging the mounting plate 114, so that the door frame assembly 1 is bolted to the wall through the mounting plate 114.

[0053] In the above embodiment, the first bending portion 112 is located on the side of the first frame 110 away from the buckle assembly 12 and away from the door leaf assembly 3. It forms a protruding structure by bending at a specific angle. The second bending portion 113 on the second frame 111 is also located on the side away from the buckle assembly 12 and the door leaf assembly 3. The two are arranged opposite to each other. After the first frame 110 and the second frame 111 are assembled, the first frame 110, the second frame 111, the buckle assembly 12, the first bending portion 112 and the second bending portion 113 together form a buckle groove. This is a structure specifically used to snap on the mounting plate 114. The mounting plate 114 is a flat component that can be tightly embedded in it. The connector that fixes the mounting plate 114 to the wall by expansion bolts passes through the reserved holes on both sides of the mounting plate 114, inserts into the wall and expands and fixes it, so that the door frame assembly 1 is indirectly connected to the wall through the mounting plate 114, ensuring that the door frame assembly 1 can be stably installed on the wall, and improving the installation firmness and stability of the entire sliding door.

[0054] Reference Figures 1-6 In one embodiment, the vertical frame 10 includes a left frame 101 and a right frame 102, and the door assembly 3 includes a first door 30, a second door 31 and a third door 32 arranged sequentially from the inside to the outside.

[0055] The first door leaf 30 is provided with a first handle 33 and a first anti-collision block 34 arranged opposite to each other on the side near the left frame 101. The first handle 33 is located on the side of the first door leaf 30 closer to the interior, and the first anti-collision block 34 is located on the side of the first door leaf 30 closer to the exterior. The second door leaf 31 is provided with a second anti-collision block 35 on the side near the left frame 101, and the second anti-collision block 35 is located on the side of the second door leaf 31 closer to the exterior. The third door leaf 32 is provided with a second handle 36 on the side near the right frame 102, and the second handle 36 is located on the side of the third door leaf 32 closer to the interior.

[0056] In the above embodiment, the vertical frame 10 constitutes the vertical frame of the sliding door. The left frame 101 and the right frame 102 are located on the left and right sides of the door leaf assembly 3, respectively, providing vertical support and positioning for the entire door. The door leaf assembly 3 consists of a first door leaf 30, a second door leaf 31, and a third door leaf 32 arranged sequentially from the inside to the outside. The first handle 33 is installed on the left frame 101 of the first door leaf 30 near the inside, making it convenient for people inside to hold and control the opening and closing direction of the door. The first anti-collision block 34 is located on the left frame 101 of the first door leaf 30 near the outside, and its function is to buffer the collision with the door frame when the door is closed, protecting the door leaf and the door frame from damage. The second anti-collision block 35 is located on the left frame 101 of the second door leaf 31 near the outside, and also plays a role in buffering the collision. The second handle 36 is located on the right frame 102 of the third door leaf 32 near the inside, making it convenient for people outside to operate the door. The horizontal frame 11 includes an upper frame 115 and a lower frame 116, which together with the vertical frame 10 form a rectangle. The frame provides horizontal support and limit for the door assembly 3. On the first frame 110 and the second frame 111 of the left frame 101, a first latch protrusion and a second latch protrusion are diagonally arranged. When the door is closed, the corresponding latching parts on the door assembly 3 can cooperate with these protrusions to achieve a firm lock on the door and enhance security. The first frame 110 of the lower frame 116 is provided with two first lower slide rails, and the second frame 111 is provided with one second lower slide rail. The first frame 110 and the second frame 111 of the upper frame 115 are respectively provided with two first upper slide rails and one second upper slide rail. These slide rails provide a precise sliding path for the pulleys at the bottom and top of the door assembly 3, ensuring that the door can move smoothly and steadily during opening and closing without jamming or deviating from the track. The three door assemblies 3 are arranged parallel to each other and opposite to each other on the slide rails. Together they constitute a flexible three-track sliding door system that can be opened and closed flexibly. Different modes such as single-leaf opening, double-leaf opening, or all three-leaf opening can be selected according to usage needs to meet diverse space usage requirements.

[0057] Reference Figures 1-5 In one embodiment, the sealing assembly includes a first sealing part 20, a second sealing part 21, a third sealing part 22, and a fourth sealing part 23;

[0058] The first sealing part 20 is disposed on the side of the first door leaf 30 near the right side frame, the second sealing part 21 is disposed on the side of the second door leaf 31 near the left side frame, the third sealing part 22 is disposed on the side of the second door leaf 31 near the right side frame, such that the second sealing part 21 and the third sealing part 22 are disposed opposite each other, and the fourth sealing part 23 is disposed on the side of the third door leaf 32 near the left side frame. When the three-track sliding door is in the closed state, the first door leaf 30 and the second door leaf 31 are arranged opposite each other, such that the first sealing part 20 and the second sealing part 21 are mutually fitted between the first door leaf 30 and the second door leaf 31, and the second door leaf 31 and the third door leaf 32 are arranged opposite each other, such that the third sealing part 22 and the fourth sealing part 23 are mutually fitted between the second door leaf 31 and the third door leaf 32.

[0059] In the above embodiment, the sealing assembly consists of a first sealing part 20, a second sealing part 21, a third sealing part 22, and a fourth sealing part 23. The first sealing part 20 is located on the side of the first door leaf 30 near the right side frame. Its position is designed to correspond to the second sealing part 21 on the second door leaf 31 when the first door leaf 30 and the second door leaf 31 are closed. The second sealing part 21 is located on the side of the second door leaf 31 near the left side frame, and works together with the first sealing part 20 to seal the gap between the first door leaf 30 and the second door leaf 31. The third sealing part 22 is located on the second door leaf 31 near the right side frame, and works together with the first sealing part 20 to seal the gap between the first door leaf 30 and the second door leaf 31. On the other side, the second sealing part 21 is opposite, and when the second door leaf 31 and the third door leaf 32 are closed, it cooperates with the fourth sealing part 23. The fourth sealing part 23 is on the side of the third door leaf 32 near the left frame. When the three-track sliding door is closed, the first door leaf 30 is opposite to the second door leaf 31, and the first sealing part 20 and the second sealing part 21 are tightly fitted to fill the gap between them; the second door leaf 31 is opposite to the third door leaf 32, and the third sealing part 22 and the fourth sealing part 23 are fitted together to seal the gap, effectively preventing the passage of dust, rainwater and sound, ensuring a good indoor environment and maintaining the stability of the sealing performance.

[0060] Reference Figures 1-5 In one embodiment, the sealing assembly includes a hook-and-loop adhesive strip and a hook-and-loop fastener. The hook-and-loop adhesive strip includes a strip bending portion 240 and a strip bonding portion 241 integrally connected to the strip bending portion 240.

[0061] The adhesive strip bending portion 240 is connected to the end of the door leaf assembly 3. The adhesive strip bonding portion 241 is disposed on the opposite sides of the two door leaf assemblies 3. The hook fastener includes a first fixed bending portion 250, a second fixed bending portion 251, and a fixed bonding portion 252. The first fixed bending portion 250 is snapped onto the end of the door leaf assembly 3 on the side opposite to where the adhesive strip bending portion 240 is disposed. The fixed bonding portion 252 is connected to the adhesive strip bonding portion 241 by a first bolt 27. The second fixed bending portion 251 is connected between the first fixed bending portion 250 and the fixed bonding portion 252. The second fixed bending portion 251 is located at the opening at the end of the door leaf assembly 3 and is snapped onto the adhesive strip bending portion 240. The first fixed bending portion 250, the second fixed bending portion 251, and the fixed bonding portion 252 are integral parts.

[0062] In the above embodiments, the first sealing part 20, the second sealing part 21, the third sealing part 22, and the fourth sealing part 23 have the same structure. Therefore, the first sealing part 20 will be described here. The sealing assembly includes a hook-and-loop adhesive strip and a hook-and-loop fastener. The bent portion 240 of the hook-and-loop adhesive strip is designed to be connected to the end of the door leaf assembly 3. It is tightly bonded to the end of the door leaf through a specific structure or method (such as a slot, clip, etc.). The adhesive strip bonding portion 241 is integrally formed with the bent portion 240 and is located on the opposite sides of the two door leaf assemblies 3. When the door is closed, it can tightly fit with the corresponding part on the adjacent door leaf to form a seal. The first fixing bent portion 250 of the hook-and-loop fastener is engaged on the side of the door leaf assembly 3 opposite to the side where the bent portion 240 of the adhesive strip is provided. The end of the door leaf assembly 3 is secured by its shape and the fit between the two. The fixing and fitting part 252 is connected to the adhesive strip fitting part 241 by the first bolt 27, so that the two are tightly connected and the overall structural strength is enhanced. The second fixing bending part 251 is located at the end opening of the door leaf assembly 3 and is snapped together with the adhesive strip bending part 240. The second fixing bending part 251 is connected between the first fixing bending part 250 and the fixing and fitting part 252. The first fixing bending part 250, the second fixing bending part 251 and the fixing and fitting part 252 are integrated into one piece, which ensures the integrity and stability of the hook fastener, makes the installation of the sealing component on the door leaf assembly 3 more reliable, effectively prevents the hook and fitting adhesive strip from loosening or shifting during use, and thus ensures a good sealing effect.

[0063] Reference Figures 1-5 In one embodiment, the sealing assembly further includes a hook-and-loop fastener 26, which is connected to the second fixed bending portion 251 by a second bolt 28, and the width of the hook-and-loop fastener 26 is the same as the width of the second fixed bending portion 251.

[0064] In the above embodiment, the sealing assembly also includes a hook-and-loop fastener 26. The hook-and-loop fastener 26 is connected to the second fixed bending portion 251 of the hook-and-loop fastener by a second bolt 28, and the two have the same width. This design ensures the stability and integrity of the connection. In terms of specific position distribution, the hook-and-loop fastener 26 on the first sealing portion 20 is the upper hook-and-loop fastener, the hook-and-loop fastener 26 on the second sealing portion 21 is the lower hook-and-loop fastener, the hook-and-loop fastener 26 on the third sealing portion 22 is the upper hook-and-loop fastener, and the hook-and-loop fastener 26 on the fourth sealing portion 23 is the lower hook-and-loop fastener. When the three-track sliding door is closed, the upper hook-and-loop fastener and the lower hook-and-loop fastener cooperate with the corresponding parts on the adjacent door leaf assembly 3 at different heights to form a continuous sealing line. They work together with the hook-and-loop rubber strip to fill the gaps between the door leaves and prevent dust, rainwater and sound from entering or escaping from the side gaps, so that the sealing assembly can effectively prevent the transmission of external substances and sound in all directions.

[0065] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A three-track sliding door, characterized in that, Includes door frame assembly, multiple sealing assemblies, and three door leaf assemblies; The door frame assembly includes adjacent vertical and horizontal borders, which together form an accommodating space. The three door leaf assemblies are arranged parallel to each other and opposite to each other within the receiving space, and the door leaf assemblies are slidably connected to the horizontal frame; The sealing assembly is disposed on the door panel assembly. When the three-track sliding door is in the closed state, the sealing assembly on each door panel assembly is fitted together between the opposite door panel assemblies. The vertical border and the horizontal border have the same structure. The horizontal border includes a first border and a second border. The first border and the second border are hollow structures. The first border and the second border are connected by a snap-fit ​​assembly. The length of the second border is equal to half the length of the first border.

2. The three-track sliding door according to claim 1, characterized in that, The latching assembly includes a first latching portion and a second latching portion, with a specified interval between the first latching portion and the second latching portion, and the first latching portion and the second latching portion are separate parts.

3. The three-track sliding door according to claim 2, characterized in that, The two ends of the first snap-fit ​​part are respectively snapped onto the first frame and the second frame, so that the middle part of the first snap-fit ​​part is a straight structure. The two ends of the second snap-fit ​​part are respectively snapped onto the first frame and the second frame, so that the middle part of the second snap-fit ​​part protrudes away from the first snap-fit ​​part, forming a V-shaped structure with the top end parallel to the first snap-fit ​​part.

4. The three-track sliding door according to claim 2, characterized in that, The first frame has a first bend on the side away from the buckle assembly, and the first bend is located on the side of the first frame away from the door panel assembly. The second frame has a second bend on the side away from the buckle assembly, and the second bend is located on the side of the second frame away from the door panel assembly. The first bend and the second bend are arranged opposite to each other and form a buckle groove for engaging the mounting plate, so that the door frame assembly is bolted to the wall by the mounting plate.

5. The three-track sliding door according to claim 1, characterized in that, The vertical frame includes a left frame and a right frame, and the door assembly includes a first door, a second door, and a third door arranged sequentially from the inside to the outside. The first door leaf has a first handle and a first anti-collision block arranged opposite each other on the side near the left frame. The first handle is located on the side of the first door leaf closer to the interior, and the first anti-collision block is located on the side of the first door leaf closer to the exterior. The second door leaf has a second anti-collision block on the side near the left frame, and the second anti-collision block is located on the side of the second door leaf closer to the exterior. The third door leaf has a second handle on the side near the right frame, and the second handle is located on the side of the third door leaf closer to the interior.

6. The three-track sliding door according to claim 5, characterized in that, The sealing assembly includes a first sealing part, a second sealing part, a third sealing part, and a fourth sealing part; The first sealing part is disposed on the side of the first door leaf near the right side frame, the second sealing part is disposed on the side of the second door leaf near the left side frame, the third sealing part is disposed on the side of the second door leaf near the right side frame, such that the second sealing part and the third sealing part are disposed opposite to each other, and the fourth sealing part is disposed on the side of the third door leaf near the left side frame. When the three-track sliding door is in the closed state, the first door leaf and the second door leaf are arranged opposite to each other, such that the first sealing part and the second sealing part are fitted together between the first door leaf and the second door leaf, and the second door leaf and the third door leaf are arranged opposite to each other, such that the third sealing part and the fourth sealing part are fitted together between the second door leaf and the third door leaf.

7. The three-track sliding door according to claim 1, characterized in that, The sealing assembly includes a hook-and-loop adhesive strip and a hook-and-loop fastener. The hook-and-loop adhesive strip includes a bent portion and an adhesive strip fitting portion integrally connected to the bent portion. The bent portion of the adhesive strip is connected to the end of the door panel assembly. The adhesive strip fitting portion is disposed on the opposite sides of the two door panel assemblies. The hook fastener includes a first fixed bent portion, a second fixed bent portion, and a fixed fitting portion. The first fixed bent portion is snapped onto the end of the door panel assembly on the side opposite to where the bent portion of the adhesive strip is disposed. The fixed fitting portion is connected to the adhesive strip fitting portion by a first bolt. The second fixed bent portion is connected between the first fixed bent portion and the fixed fitting portion. The second fixed bent portion is located at the opening at the end of the door panel assembly and is snapped onto the bent portion of the adhesive strip. The first fixed bent portion, the second fixed bent portion, and the fixed fitting portion are integral parts.

8. The three-track sliding door according to claim 7, characterized in that, The sealing assembly also includes a hook-and-groove fastener, which is connected to the second fixed bend portion by a second bolt, and the width of the hook-and-groove fastener is the same as the width of the second fixed bend portion.

9. The three-track sliding door according to claim 1, characterized in that, The glass in the door panel assembly is insulated glass, and the door frame assembly is made of thermally broken aluminum profile.

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