CN213297667U

CN213297667U - Three-rail sliding door

Info

Publication number: CN213297667U
Application number: CN202021383613.5U
Authority: CN
Inventors: 黄敬彬
Original assignee: Guangdong Bohua Door & Window Technology Co ltd
Current assignee: Guangdong Bohua Door & Window Technology Co ltd
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2021-05-28
Anticipated expiration: 2030-07-14

Abstract

The utility model discloses a three-rail sliding door, including the door frame, four door leafs and two buddha's warrior attendant net fans, the door frame includes door frame and lower door frame, it includes horizontal frame and the first last slide rail of locating horizontal frame to go up the door frame, slide rail and third last slide rail on second, lower door frame includes the threshold and locates the first lower slide rail of threshold, second lower slide rail and third lower slide rail, buddha's attendant net fan top is equipped with first cooperation groove, the bottom is equipped with second cooperation groove, the door leaf top is equipped with third cooperation groove, the bottom is equipped with fourth cooperation groove, buddha's attendant net fan top is through first cooperation groove and first last slide rail connection, the bottom is through second cooperation groove and first lower slide rail connection, two door leaf tops are through respectively going up slide rail connection on third cooperation groove and the second, the bottom is through respectively fourth cooperation groove and second lower slide rail connection, in addition two door leaf tops are through respectively third cooperation groove and third last slide rail connection, The bottom is connected with the third downslide track through a respective fourth mating groove.

Description

Three-rail sliding door

Technical Field

The utility model relates to a building aluminum alloy door and window field especially relates to a three-rail sliding door.

Background

The sliding door is a common household door and can be pushed and pulled. With the development of technology and the diversification of decoration means, the functions and the application range of the sliding door are continuously expanded from the surface of the traditional plate to glass, cloth, rattan woven and the aluminum alloy door of the building outer wall popular in the market, and the types of assembling materials are various.

However, the sliding door on the current market is mainly made of two rails, the opening space is small, and the mosquito preventing function is not provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a three-rail sliding door to solve the sliding door on the current market and adopt two rail ways more, it opens the space few, does not have the problem of mosquito-proof function moreover.

The utility model discloses a following technical scheme realizes:

the utility model provides a three-rail sliding door, which comprises a door frame, four door leaves and two diamond net leaves, wherein the door frame comprises an upper door frame and a lower door frame arranged at intervals with the upper door frame, the upper door frame comprises an upper transverse frame and a first upper sliding rail, a second upper sliding rail and a third upper sliding rail which are arranged side by side in a protruding way at the bottom of the upper transverse frame, the lower door frame comprises a door sill and a first lower sliding rail, a second lower sliding rail and a third lower sliding rail which are arranged side by side in a protruding way at the top of the door sill, two diamond net leaves are both concavely provided with a first matching groove at the top and a second matching groove at the bottom, the four door leaves are both concavely provided with a third matching groove at the top and a fourth matching groove at the bottom, the two diamond net leaves are connected with the first upper sliding rail through the first matching grooves and the first lower sliding rails through the second matching grooves, the tops of the two door leaves are in sliding connection with the second upper sliding rail through the third matching grooves, the bottoms of the two door leaves are in sliding connection with the second lower sliding rail through the fourth matching grooves, the tops of the rest two door leaves are in sliding connection with the third upper sliding rail through the third matching grooves, and the bottoms of the rest two door leaves are in sliding connection with the third lower sliding rail through the fourth matching grooves.

Further, the three-rail sliding door further comprises a plurality of idler wheels, wherein a mounting groove is formed in each of the second matching groove and the fourth matching groove, one end of each idler wheel is mounted in the mounting groove, and the other end of each idler wheel abuts against the first lower sliding rail, the second lower sliding rail or the third lower sliding rail.

Furthermore, the four door leaves comprise an upper part, a lower part, an outer part and hollow glass, two ends of the hollow glass are respectively connected with the upper part, the lower part and the outer part, the two diamond net leaves comprise an upper diamond screen window, a lower diamond screen window, a diamond net and two diamond net pressing lines, two ends of the diamond net are respectively fixed on the upper diamond screen window and the lower diamond screen window through the two diamond net pressing lines, the first matching groove is formed in the top of the upper diamond screen window, the second matching groove is formed in the bottom of the lower diamond screen window, the third matching groove is formed in the top of the upper part and the lower part, and the fourth matching groove is formed in the bottom of the outer part.

Further, the three-rail sliding door further comprises a plurality of first sealing wool tops, the top of the diamond mesh sash is further concavely provided with a plurality of first transverse notches which are spaced from the first matching grooves, the top of the door leaf is further concavely provided with a plurality of second transverse notches which are spaced from the third matching grooves, one end of each first sealing wool top is arranged in each first transverse notch or each second transverse notch, and the other end of each first sealing wool top abuts against the upper transverse frame and forms sliding contact sealing with the upper transverse frame.

Further, the three-rail sliding door further comprises a plurality of second sealing wool tops, the bottom of the diamond mesh sash is further concavely provided with a plurality of third transverse notches which are spaced from the second matching grooves, the bottom of the door leaf is further concavely provided with a plurality of fourth transverse notches which are spaced from the fourth matching grooves, one end of each second sealing wool top is arranged in each third transverse notch or each fourth transverse notch, and the other end of each second sealing wool top abuts against the doorsill and forms sliding contact sealing with the doorsill.

Further, the three-rail sliding door further comprises a plurality of third sealing wool tops, two inner sides of the first matching groove and the third matching groove are respectively provided with a fifth transverse groove opening, one end of the third sealing wool top is installed in the fifth transverse groove opening, the other end of the third sealing wool top abuts against the first upper sliding rail or the second upper sliding rail or the third upper sliding rail and forms sliding contact sealing with the first upper sliding rail or the second upper sliding rail or the third upper sliding rail.

Furthermore, the door frame further comprises two edge seals, two ends of each edge seal are respectively and vertically connected with the upper door frame and the lower door frame, and the two door leaves on the second downward sliding rail are respectively abutted against the two edge seals.

Furthermore, the buddha's warrior attendant net sash still includes first hooked rabbet and with first hooked rabbet parallel arrangement just is located the door frame middle part first smooth rabbet, first hooked rabbet with the one end of first smooth rabbet all with go up buddha's warrior attendant screen window fixed connection, the other end all with lower buddha's warrior attendant screen window fixed connection, first hooked rabbet, go up buddha's warrior attendant screen window, first smooth rabbet and lower buddha's warrior attendant screen window enclose into first square framework, the buddha's warrior attendant net is fixed in the first square framework.

Further, the three-rail sliding door further comprises a plurality of fourth sealing strips, the door leaf further comprises a second hooked rabbet and a second smooth rabbet arranged in parallel with the second hooked rabbet, one end of the second hooked rabbet and one end of the second smooth rabbet are fixedly connected with the outer lower part and the other end of the second smooth rabbet are fixedly connected with the upper lower part, the second hooked rabbet, the upper lower part, the second smooth rabbet and the outer lower part are enclosed to form a second square frame body, the hollow glass is fixed in the second square frame body, the second hooked rabbet is adjacent to the first hooked rabbet, the second hooked rabbet, the first smooth rabbet, the second smooth rabbet and the edge seal, and the fourth sealing strips are vertically arranged between the second smooth rabbet, the second smooth rabbet and the edge seal.

Furthermore, the three-rail sliding door further comprises a plurality of lock bodies, each lock body comprises a transmission rod and a lock point which is connected with the transmission rod in a matched mode, the transmission rod is installed on one side, close to the edge seal, of one of the two adjacent first smooth rabbet or one of the two adjacent second smooth rabbet or one of the second smooth rabbet, and the lock points are correspondingly fixed on the other first smooth rabbet or the other second smooth rabbet or the edge seal.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model discloses three-rail sliding door possesses mosquito-proof worm function, and each door leaf and each buddha's warrior attendant net fan all with door frame sliding connection, when three-rail sliding door is opened to needs, can be as required selective with each door leaf and each buddha's warrior attendant net fan etc. equally divide push away to the both sides of door frame respectively or all push away one side of door frame with each door leaf and each buddha's warrior attendant net fan, the mode of opening has the diversification, and it is big to open the space.

Drawings

Fig. 1 is a front view of a three-rail sliding door according to an embodiment of the present invention;

FIG. 2 is a sectional view of each door leaf and each diamond net leaf in FIG. 1 moving equally to the back edges A-A of both sides of the door jamb;

FIG. 3 is an enlarged view of a portion of FIG. 2 at C;

FIG. 4 is a sectional view of a portion of the three-rail sliding door shown in FIG. 1, taken along line B-B and rotated 90 degrees;

FIG. 5 is another partial sectional view of the three-rail sliding door of FIG. 1 taken along line B-B and rotated 90 degrees;

fig. 6 is a partially enlarged schematic view of fig. 4 at D.

In the figure:

10. a door jamb; 11. an upper door frame; 111. an upper horizontal frame; 112. a first upper slide rail; 113. a second upper slide rail; 114. a third upper slide rail; 12. a lower door frame; 121. a threshold; 122. a first downslide track; 123. a second downslide track; 124. a third downslide track; 13. edge sealing; 20. a door leaf; 21. upper and lower sides; 211. a third mating groove; 22. the outer lower part; 221. a fourth mating groove; 23. hollow glass; 24. a second hooked rabbet; 25. a second smooth rabbet; 30. a diamond mesh fan; 31. mounting a diamond screen window; 311. a first mating groove; 32. a lower diamond screen window; 321. a second mating groove; 33. a diamond mesh; 34. pressing a diamond mesh; 35. a first hooked rabbet; 36. a first smooth rabbet; 40. a roller; 50. a first sealing wool top; 60. a second sealing wool top; 70. third sealing wool tops; 80. fourth sealing wool tops; 90. a lock body; 91. a transmission rod; 92. locking points; 93. a wrench.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that, on the premise of no conflict, the embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

Please refer to fig. 1 to 3, the utility model discloses a three-rail sliding door, the three-rail sliding door includes door frame 10, four door leaves 20 and two buddha's warrior attendant net fans 30 are all installed on door frame 10 and all can slide relative to door frame 10, and two buddha's warrior attendant net fans 30 are all close to outdoor one side setting.

The door frame 10 includes an upper door frame 11 and a lower door frame 12 arranged in parallel with the upper door frame 11 at an interval, the lower door frame 12 abuts on the ground, the upper door frame 11 includes an upper horizontal frame 111 and a first upper slide rail 112, a second upper slide rail 113 and a third upper slide rail 114 protruding from the bottom of the upper horizontal frame 111, the first upper slide rail 112, the second upper slide rail 113 and the third upper slide rail 114 are arranged in parallel at an interval, the second upper slide rail 113 is arranged between the first upper slide rail 112 and the third upper slide rail 114, and the first upper slide rail 112 is arranged near one side of the outdoor.

The lower door frame 12 includes a door sill 121, and a first lower sliding rail 122, a second lower sliding rail 123 and a third lower sliding rail 124 protruding from the top of the door sill 121, wherein the first lower sliding rail 122, the second lower sliding rail 123 and the third lower sliding rail 124 are arranged in parallel at intervals, the second lower sliding rail 123 is located between the first lower sliding rail 122 and the third lower sliding rail 124, and the first lower sliding rail 122 is arranged near one outdoor side.

The top parts of the two diamond net fans 30 are concavely provided with first matching grooves 311, the bottom parts of the two diamond net fans 30 are concavely provided with second matching grooves 321, the top parts of the four door leaves 20 are concavely provided with third matching grooves 211, the bottom parts of the four door leaves 20 are concavely provided with fourth matching grooves 221, the top parts of the two diamond net fans 30 are slidably connected with the first upper sliding rail 112 through the first matching grooves 311 respectively, the bottom parts of the two door leaves 20 are slidably connected with the first lower sliding rail 122 through the second matching grooves 321 respectively, the top parts of the two door leaves 20 are slidably connected with the second upper sliding rail 113 through the third matching grooves 211 respectively, and the bottom parts of the two door leaves 20 are slidably connected with the second lower sliding rail 123 through the fourth matching grooves 221 respectively, the top of the remaining two door leaves 20 are slidably connected to the third upper sliding rail 114 through respective third matching grooves 211, and the bottom of the remaining two door leaves 20 are slidably connected to the third lower sliding rail 124 through respective fourth matching grooves 221. Like this can open each door leaf 20 and each buddha's warrior attendant net fan 30 as required selectivity, the mode of opening has the diversification, opens the space greatly, and two buddha's warrior attendant net fans 30 are just to two door leaves 20 in the middle to make this three-rail push-and-pull door possess mosquito-proof worm function, of course, two buddha's warrior attendant net fans 30 also can locate indoor one side.

In a preferred embodiment, the three-rail sliding door further includes a plurality of rollers 40, each of the second matching groove 321 and the fourth matching groove 221 has a mounting groove, one end of each roller 40 is mounted in the mounting groove, and the other end of each roller 40 abuts against the first lower sliding rail 122, the second lower sliding rail 123 or the third lower sliding rail 124, in this embodiment, the three-rail sliding door can realize three-rail operation, the two diamond net leaves 30 on the first lower sliding rail 122, the two door leaves 20 on the second lower sliding rail 123 and the two door leaves 20 on the second lower sliding rail 123 do not interfere with each other during operation, and the rollers 40 can reduce friction between each diamond net leaf 30 and each door leaf 20 and the lower door frame 12.

In this embodiment, four door leaves 20 all include upper and lower 21, outer below 22 and both ends respectively with upper and lower 21 and outer below 22 hollow glass 23 be connected, two buddha's warrior attendant net fans 30 all include diamond screen window 31, diamond screen window 32 down, diamond mesh 33 and two diamond mesh line pressing 34, diamond mesh 33's both ends are fixed in on diamond screen window 31 and the diamond screen window 32 down through two diamond mesh line pressing 34 respectively, the top of diamond screen window 31 is located to first cooperation groove 311, the bottom of diamond screen window 32 is located down to second cooperation groove 321, the top of upper and lower 21 is located to third cooperation groove 211, the bottom of outer below 22 is located to fourth cooperation groove 221.

As a preferred embodiment, the three-rail sliding door further includes a plurality of first sealing strips 50, the top of the diamond mesh sash 30 is further concavely provided with a plurality of first transverse notches spaced from the first matching groove 311, the top of the door leaf 20 is further concavely provided with a plurality of second transverse notches spaced from the third matching groove 211, one end of each first sealing strip 50 is installed in the first transverse notch or the second transverse notch, and the other end of each first sealing strip is abutted to the upper transverse frame 111, so that the tops of the door leaves 20 and the diamond mesh sashes 30 and the upper transverse frame 111 form a sliding contact seal, thereby effectively preventing mosquitoes, rainwater and the like from entering, and the number of the first sealing strips 50 is not limited, and may be one or multiple.

As a preferred embodiment, the three-rail sliding door further includes a plurality of second sealing strips 60, a plurality of third transverse notches spaced from the second matching grooves 321 are further concavely provided at the bottom of the diamond net leaf 30, a plurality of fourth transverse notches spaced from the fourth matching grooves 221 are further concavely provided at the bottom of the door leaf 20, one end of each second sealing strip 60 is installed in the third transverse notch or the fourth transverse notch, and the other end of each second sealing strip abuts against the threshold 121, so that the bottoms of the door leaves 20 and the diamond net leaves 30 are in sliding contact with the threshold 121 for sealing, and mosquitoes, rainwater and the like are effectively prevented from entering.

As a preferred embodiment, the three-rail sliding door further includes a plurality of third sealing wool tops 70, wherein both inner sides of the first matching groove 311 and the third matching groove 211 are respectively provided with a fifth transverse slot, one end of the third sealing wool top 70 is installed in the fifth transverse slot, and the other end of the third sealing wool top is abutted against the first upper sliding rail 112, the second upper sliding rail 113 or the third upper sliding rail 114, so that each upper diamond screen window 31 and each upper and lower portion 21 respectively form a sliding contact seal with the first upper sliding rail 112, the second upper sliding rail 113 or the third upper sliding rail 114, thereby effectively preventing mosquitoes, rain water and the like from entering.

The door frame 10 further includes two edge seals 13, two ends of the edge seal 13 are respectively connected to the upper door frame 11 and the lower door frame 12 vertically, and when the three-rail sliding door is closed, the two door leaves 20 on the second lower sliding rail 123 respectively abut against the two edge seals 13.

Referring to fig. 4 to 6, the diamond screen sash 30 further includes a first hooked rabbet 35 and a first smooth rabbet 36 parallel to the first hooked rabbet 35 and located in the middle of the door frame 10, one end of each of the first hooked rabbet 35 and the first smooth rabbet 36 is fixedly connected to the upper diamond screen window 31, the other end of each of the first hooked rabbet 35 and the first smooth rabbet 36 is fixedly connected to the lower diamond screen window 32, the first hooked rabbet 35, the upper diamond screen window 31, the first smooth rabbet 36 and the lower diamond screen window 32 are enclosed to form a first square frame, and the diamond screen 33 is fixed in the first square frame to protect the diamond screen 33.

As a preferable embodiment, the three-rail sliding door further comprises a plurality of fourth sealing strips 80, the door leaf 20 further comprises a second hooked rabbet 24 and a second smooth rabbet 25 arranged in parallel with the second hooked rabbet 24, one end of each of the second hooked rabbet 24 and the second smooth rabbet 25 is fixedly connected with the outer lower part 22, the other end of each of the second hooked rabbet 24 and the second smooth rabbet 25 is fixedly connected with the upper lower part 21, the second hooked rabbet 24, the upper lower part 21, the second smooth rabbet 25 and the outer lower part 22 are enclosed to form a second square frame body, the hollow glass 23 is fixed in the second square frame body, the fourth sealing strips 80 are arranged between the second hooked rabbet 24 and the adjacent first hooked rabbet 35, between the two second hooked rabbet 24, between the two first smooth rabbet 36, between the two second smooth rabbet 25 and between the second smooth rabbet 25 and the edge seal 13, so that sliding contact sealing is formed between the adjacent two door leaves 20, between the door leaf 20 and the door frame 10, between the door leaf 20 and the diamond mesh sash 30 and between the diamond mesh sash 30 in the vertical direction, effectively preventing mosquitoes, rain water and the like from entering.

In a preferred embodiment, the three-rail sliding door further includes a plurality of lock bodies 90, each lock body 90 includes a transmission rod 91 and a lock point 92 cooperatively connected with the transmission rod 91, when the two diamond net wings 30 on the first lower sliding rail 122 are closed, the transmission rod 91 is mounted on one of the first smooth rabbet 36, the lock point 92 is correspondingly fixed on the other adjacent first smooth rabbet 36, when the two door leaves 20 on the second lower sliding rail 123 are respectively abutted against the two side seals 13, the transmission rod 91 is mounted on the second smooth rabbet 25, the lock point 92 is correspondingly fixed on the side seal 13, when the two door leaves 20 on the third lower sliding rail 124 are closed, the transmission rod 91 is mounted on one of the second smooth rabbet 25, and the lock point 92 is correspondingly fixed on the other adjacent second smooth rabbet 25, so that the locking fixation between the two adjacent door leaves 20, between the door leaf 20 and the side seal 13, and between the two diamond net wings 30 on the same lower sliding rail can be realized, the lock body 90 can be opened by a wrench 93.

To sum up, the utility model discloses a three-rail sliding door possesses mosquito-proof worm function, and it is big to open the space, can be general between door leaf 20 and the buddha's warrior attendant net fan 30, assembles simply, structure elegant appearance, can satisfy the high-quality requirement of customer to modern building door and window.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. The utility model provides a three rail push-and-pull door which characterized in that: the door frame comprises an upper door frame and a lower door frame arranged at intervals with the upper door frame, the upper door frame comprises an upper transverse frame and a first upper sliding rail, a second upper sliding rail and a third upper sliding rail which are arranged at the bottom of the upper transverse frame in a protruding mode side by side, the lower door frame comprises a door sill and a first lower sliding rail, a second lower sliding rail and a third lower sliding rail which are arranged at the top of the door sill in a protruding mode side by side, the tops of the two diamond net fans are both concavely provided with first matching grooves, the bottoms of the two diamond net fans are both concavely provided with second matching grooves, the tops of the four door leaves are both concavely provided with third matching grooves, the bottoms of the four door leaves are both concavely provided with fourth matching grooves, the tops of the two diamond net fans are respectively connected with the first upper sliding rail through respective first matching grooves, and the bottoms of the two diamond net fans are respectively connected with the first lower sliding rail through respective second matching grooves, the tops of the two door leaves are in sliding connection with the second upper sliding rail through the third matching grooves, the bottoms of the two door leaves are in sliding connection with the second lower sliding rail through the fourth matching grooves, the tops of the rest two door leaves are in sliding connection with the third upper sliding rail through the third matching grooves, and the bottoms of the rest two door leaves are in sliding connection with the third lower sliding rail through the fourth matching grooves.

2. The three-rail sliding door according to claim 1, further comprising a plurality of rollers, wherein each of the second and fourth mating grooves has a mounting groove, and one end of each of the rollers is mounted in the mounting groove and the other end thereof abuts against the first or second or third downslide tracks.

3. The three-rail sliding door according to claim 1, wherein each of the four door leaves comprises an upper portion, a lower portion, and hollow glass having two ends respectively connected to the upper portion, the lower portion, and the outer portion, each of the two diamond net leaves comprises an upper diamond screen window, a lower diamond screen window, a diamond net, and two diamond net press lines, the two ends of the diamond net are respectively fixed to the upper diamond screen window and the lower diamond screen window through the two diamond net press lines, the first matching groove is formed in the top of the upper diamond screen window, the second matching groove is formed in the bottom of the lower diamond screen window, the third matching groove is formed in the top of the upper portion and the lower portion, and the fourth matching groove is formed in the bottom of the outer portion and the lower portion.

4. The three-rail sliding door according to claim 1, further comprising a plurality of first sealing wool tops, wherein a plurality of first transverse notches spaced from the first matching grooves are further concavely formed in the top of the diamond mesh leaf, a plurality of second transverse notches spaced from the third matching grooves are further concavely formed in the top of the leaf, one end of each first sealing wool top is mounted in each first transverse notch or each second transverse notch, and the other end of each first sealing wool top abuts against the upper transverse frame and forms sliding contact sealing with the upper transverse frame.

5. The three-rail sliding door according to claim 1, further comprising a plurality of second sealing strips, wherein a plurality of third transverse notches spaced from the second matching grooves are further concavely formed in the bottom of the diamond mesh leaf, a plurality of fourth transverse notches spaced from the fourth matching grooves are further concavely formed in the bottom of the door leaf, one end of each second sealing strip is mounted in each third transverse notch or each fourth transverse notch, and the other end of each second sealing strip abuts against the doorsill and forms sliding contact sealing with the doorsill.

6. The three-rail sliding door according to claim 1, further comprising a plurality of third sealing strips, wherein the first and third fitting grooves are respectively provided with a fifth transverse slot at both inner sides thereof, and one end of each third sealing strip is mounted in the fifth transverse slot, and the other end thereof abuts against the first or second or third upper sliding rail and forms a sliding contact seal therewith.

7. The three-rail sliding door according to claim 3, wherein the door frame further comprises two edge seals, two ends of the edge seals are respectively and vertically connected to the upper door frame and the lower door frame, and the two door leaves on the second lower sliding rail are respectively abutted against the two edge seals.

8. The three-rail sliding door according to claim 7, wherein the diamond screen sash further comprises a first hooked rabbet and a first smooth rabbet which is arranged in parallel with the first hooked rabbet and is positioned in the middle of the door frame, one end of each of the first hooked rabbet and the first smooth rabbet is fixedly connected with the upper diamond screen window, the other end of each of the first hooked rabbet and the first smooth rabbet is fixedly connected with the lower diamond screen window, the first hooked rabbet, the upper diamond screen window, the first smooth rabbet and the lower diamond screen window are enclosed into a first square frame, and the diamond screen is fixed in the first square frame.

9. A three-rail sliding door according to claim 8, wherein the three-rail sliding door further comprises a plurality of fourth sealing strips, the door leaf further comprises a second hooked rabbet and a second smooth rabbet arranged in parallel with the second hooked rabbet, one ends of the second hooked rabbet and the second smooth rabbet are fixedly connected with the outer lower part, the other ends of the second hooked rabbet and the second smooth rabbet are fixedly connected with the upper lower part, the second hooked rabbet, the upper lower part, the second smooth rabbet and the outer lower part are enclosed to form a second square frame body, the hollow glass is fixed in the second square frame body, and the fourth sealing strips are vertically arranged between the second hooked rabbet and the adjacent first hooked rabbet, between the second hooked rabbet, between the first smooth rabbet, between the second smooth rabbet and the edge seal.

10. A three-rail sliding door according to claim 9, further comprising a plurality of lock bodies, wherein each lock body comprises a transmission rod and a lock point connected with the transmission rod in a matching manner, the transmission rod is mounted on one side of one of the two adjacent first smooth rabbet or one of the two adjacent second smooth rabbet or the side of the second smooth rabbet close to the edge seal, and the lock points are correspondingly fixed on the other first smooth rabbet or the other second smooth rabbet or the edge seal.