Broken bridge multi-rail lower frame drainage structure and sliding door and window

Abstract

The utility model provides a bridge-cutoff multi-rail lower frame drainage structure and a sliding door and window, the bridge-cutoff multi-rail lower frame drainage structure comprises a bridge-cutoff multi-rail lower frame, the bridge-cutoff multi-rail lower frame comprises a main bridge-cutoff profile fixedly provided with a first heat insulation strip and an auxiliary bridge-cutoff profile fixedly provided with a second heat insulation strip; an indoor side drainage cavity is formed in the indoor side of the main broken bridge profile and communicates with the outdoor side area of the broken bridge multi-rail lower frame through a first drainage path. The first drainage path is provided with a first vertical drainage path extending downwards from the interior of the indoor side drainage cavity and a first transverse drainage path extending towards the outdoor side from the lower end of the first vertical drainage path. The first heat insulation strip and the second heat insulation strip are both located on the outdoor side of the first vertical drainage path and located on the lower side and the upper side of the first transverse drainage path respectively. Water is drained by adopting an isobaric structure drainage principle, and the watertight performance is greatly improved reliably on the premise that the visible height of the inner side of the broken bridge multi-rail lower frame chamber is not increased.

Description

Technical Field

[0001] The utility model relates to the technical field of door and window drainage, in particular to a broken bridge multi-track lower frame drainage structure, and a sliding door and window comprising the broken bridge multi-track lower frame drainage structure. Background Art

[0002] Sliding doors and windows usually include a fixed outer frame and at least two door and window sashes that are movably mounted on the outer frame. Each door and window sash includes a sash frame and a sash panel mounted in the sash frame. The sash panel is usually made of glass. The sliding doors and windows are opened and closed by moving the door and window sashes.

[0003] In the prior art, the outer frame mainly includes a pair of vertical profiles that are relatively arranged left and right along the width direction of the sliding door and window and extend straight up and down, and a pair of horizontal profiles that are relatively arranged up and down along the height direction of the sliding door and window and extend straight up and down, and the lower horizontal profile of the outer frame constitutes a multi-track lower frame of the outer frame. Specifically, the multi-track lower frame of the outer frame is integrally provided with a plurality of track portions that extend straight up and down, and the plurality of track portions are arranged front and back along the indoor and outdoor directions, and at least one door and window sash is slidably matched on each track portion. For example, in a sliding door and window with 2 to 3 door and window sashes, only one door and window sash can be arranged on one track portion; in a sliding door and window with 4 or 6 door and window sashes, two or more door and window sashes can be arranged on one track portion.

[0004] Furthermore, the multi-track lower frame used in the outer frame of the existing sliding door and window is an integrated structure, and based on the heat-insulating characteristics of the sliding door and window, the multi-track lower frame is a thermal-insulating profile with a heat-insulating function; the thermal-insulating profile refers to a profile with a heat-insulating strip fixed inside; for example, the front track disclosed in the Chinese utility model patent with the authorization announcement number CN209817746U. Since the multi-track lower frame is fixed with a heat-insulating strip inside, it is not allowed to drain water into the thermal-insulating cavity where the heat-insulating strip is located, otherwise there will be a risk of water seepage into the wall, which makes it impossible for the indoor side of the integrated thermal-insulating multi-track lower frame in the thermal-insulating sliding door and window to drain water downward. If the indoor side of the integrated thermal-insulating multi-track lower frame is drained downward, the drainage channel from the indoor side to the outside will inevitably pass through the thermal-insulating cavity where the heat-insulating strip is located, which is not allowed. In this way, the indoor side of the integrated thermal-insulating multi-track lower frame can only drain water horizontally to the outdoor side along the indoor and outdoor direction, so that the indoor side can only use the drainage principle of the water head structure to drain water, and the watertight performance reaches 350Pa.

[0005] However, in recent years, the sliding door and window market has higher water tightness requirements for large opening products, requiring water tightness to reach more than 500Pa. The indoor side of the existing integrated broken bridge multi-track lower frame is limited by the principle of water head structure drainage. Without increasing the indoor height of the multi-track lower frame, it is difficult to achieve water tightness of more than 500Pa. If the water tightness is improved by increasing the indoor height of the multi-track lower frame, the visible height of the indoor side of the multi-track lower frame will inevitably increase, which not only increases the cost, but also greatly reduces the appearance of the sliding door and window. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a broken bridge multi-track lower frame drainage structure, so that the inner side of the broken bridge multi-track lower frame room adopts the isobaric structural drainage principle, which greatly improves the watertight performance without changing the visible height.

[0007] To achieve the above-mentioned purpose, the utility model provides a thermal-break multi-track lower frame drainage structure, comprising a thermal-break multi-track lower frame for supporting multiple door and window sashes in sliding doors and windows, the thermal-break multi-track lower frame comprising a main thermal-break profile fixed with a first heat-insulating strip, and an auxiliary thermal-break profile fixed with a second heat-insulating strip, the main thermal-break profile and the auxiliary thermal-break profile being two independent thermal-break profiles; the indoor side of the main thermal-break profile is provided with an indoor track portion and an indoor frame portion that are directly distributed along the indoor and outdoor directions, the indoor track portion is used for sliding cooperation with the indoor door and window sashes that are close to the indoor side among the multiple door and window sashes, and is located on the outdoor side of the indoor frame portion, the indoor track portion and the indoor frame portion are both used for sealing cooperation with the indoor door and window sashes, and a position seal is formed between the two. An indoor drainage cavity is provided at the lower side of the indoor door and window sash; the auxiliary thermal break bridge profile is fixed on the top of the main thermal break bridge profile and is located at the outdoor side of the indoor track portion; the indoor drainage cavity is connected with the outdoor area of ​​the thermal break multi-track lower frame through a first drainage path, the first drainage path has a first vertical drainage path extending downward from the indoor drainage cavity, and a first horizontal drainage path extending from the lower end of the first vertical drainage path toward the outdoor side, the main thermal break bridge profile is provided with drainage holes on the first vertical drainage path and the first horizontal drainage path, and the auxiliary thermal break bridge profile is provided with drainage holes on the first horizontal drainage path; the first thermal insulation strip and the second thermal insulation strip are both located at the outdoor side of the first vertical drainage path, and are respectively located at the lower side and the upper side of the first horizontal drainage path.

[0008] The present application sets the multi-track lower frame of the broken bridge constituting the lower profile of the outer frame as a split structure, which is fixed by a mutually independent main broken bridge profile and an auxiliary broken bridge profile, and combined with the structure in which the auxiliary broken bridge profile is fixed on the top of the main broken bridge profile, the first thermal insulation strip in the main broken bridge profile and the second thermal insulation strip in the auxiliary broken bridge profile are staggered in the up and down directions, so that the part of the main broken bridge profile and the auxiliary broken bridge profile located on the upper side of the first thermal insulation strip and the lower side of the second thermal insulation strip can be used for drainage. At the same time, the auxiliary broken bridge profile is located on the outdoor side of the indoor track part, that is, the auxiliary broken bridge profile is located on the outdoor side of the indoor drainage cavity, so the second thermal insulation strip must be located on the outdoor side of the indoor drainage cavity, thereby allowing the indoor drainage cavity to drain downward. Therefore, based on the matching structure of the main broken bridge profile and the auxiliary broken bridge profile, the first drainage path used for draining water from the indoor drainage cavity to the outdoor side in the present application can first drain water downwards and then drain water outdoors, and a part of the first drainage path can be set in this part of the area on the upper side of the first insulation strip and the lower side of the second insulation strip, so that the first drainage path can drain water downwards without passing through the broken bridge cavity where the first insulation strip and the second insulation strip are located, so that the indoor side of the broken bridge multi-track lower frame adopts the isobaric structural drainage principle. Without changing the visible height of the indoor side of the broken bridge multi-track lower frame, the present application adopts the isobaric structural drainage principle to drain water, and the watertightness reaches more than 500Pa. Compared with the 350Pa watertightness that can be achieved based on the water head structural drainage principle in the prior art, the present application reliably realizes a significant improvement in watertightness without increasing the visible height of the indoor side of the broken bridge multi-track lower frame. Since the indoor visible height of the broken bridge multi-track lower frame is not increased, the cost of the broken bridge multi-track lower frame will not be increased, and the appearance of the broken bridge multi-track lower frame and the sliding doors and windows can be guaranteed.

[0009] Furthermore, the preferred structure of the main thermal break profile is as follows: the main thermal break profile comprises a main body frame, a main body horizontal side, and a first main body vertical side, a second main body vertical side and a third main body vertical side all extending upward from the top of the main body frame, the first main body vertical side, the second main body vertical side and the third main body vertical side are arranged side by side in sequence from indoor to outdoor, the main body horizontal side is horizontally connected between the first main body vertical side and the second main body vertical side and is located at the bottom of the indoor drainage cavity, the indoor track portion and the indoor frame The first heat insulation strip is fixed in the main body frame; the main body horizontal side is provided with a drainage hole located on the first vertical drainage path, and the second main body vertical side and the third main body vertical side are provided with drainage holes located on the first horizontal drainage path, so that the first drainage path is located on the upper side of the main body frame; the auxiliary broken bridge profile is arranged as a whole on the upper side of the main body frame located on the second main body vertical side and the outdoor side of the indoor track part, and the auxiliary broken bridge profile is fixedly connected to the third main body vertical side. In this way, a drainage hole for downward drainage is provided on the main body horizontal side, and the downward drainage path will not pass through the broken bridge cavity where the first heat insulation strip and the second heat insulation strip are located; a drainage hole for drainage to the outdoor side is provided on the second main body vertical side and the third main body vertical side, and the drainage path to the outdoor side will not pass through the broken bridge cavity where the first heat insulation strip and the second heat insulation strip are located, which reliably ensures that the indoor side of the broken bridge multi-track lower frame adopts the isobaric structure drainage principle.

[0010] Furthermore, the preferred structure of the auxiliary thermal break profile is as follows: the auxiliary thermal break profile includes an auxiliary material body frame, and several auxiliary material vertical sides extending downward from the bottom of the auxiliary material body frame, several of the auxiliary material vertical sides are arranged side by side along the indoor and outdoor directions, and the lower ends are all abutted and matched with the main material body frame, and the second thermal insulation strip is fixed in the auxiliary material body frame; one of the several auxiliary material vertical sides is fixedly connected to the third main material vertical side by screws, and several of the auxiliary material vertical sides are provided with drainage holes located on the first horizontal drainage path, so that the first horizontal drainage path is located on the lower side of the auxiliary material body frame. The auxiliary thermal break profile is fixed to the top of the main thermal break profile by screw locking of the auxiliary material vertical side and the third main material vertical side, so as to ensure the integrity of the thermal break multi-track lower frame. At the same time, drainage holes for draining water to the outside are opened on the vertical edges of the auxiliary materials, and the drainage path to the outside will not pass through the thermal insulation cavity where the first insulation strip and the second insulation strip are located, reliably ensuring that the indoor side of the thermal insulation multi-track lower frame adopts the isobaric structural drainage principle.

[0011] Preferably, the third main material vertical side is arranged close to the outdoor side of the main material body frame, and the auxiliary material vertical side located at the outdoor side of the plurality of auxiliary material vertical sides abuts against the outdoor side of the third main material vertical side, and the two are fixedly connected by screws. In this way, the holes for screwing in the auxiliary broken bridge profile and the main broken bridge profile are close to the outdoor side of the broken bridge multi-track lower frame, which facilitates screwing in and locking, and improves the convenience of locking the auxiliary broken bridge profile and the main broken bridge profile.

[0012] Preferably, the main thermally-broken bridge profile also includes a main material edge sealing portion extending from the outdoor side of the second main material vertical side portion toward the auxiliary thermally-broken bridge profile, and a main material lap portion provided at the outdoor side end of the main material edge sealing portion, a first sealing strip is fixed in the main material lap portion, an auxiliary material lap groove is provided on the indoor side of the auxiliary thermally-broken bridge profile, the main material lap portion is accommodated in the auxiliary material lap groove and contacts with the groove wall of the auxiliary material lap groove, the first sealing strip is accommodated in the auxiliary material lap groove and abuts against the groove wall of the auxiliary material lap groove. On the premise of using screws to lock the auxiliary thermally-broken bridge profile and the main thermally-broken bridge profile, the present application also realizes the overlap between the auxiliary thermally-broken bridge profile and the main thermally-broken bridge profile by the overlap cooperation of the main material lap portion and the auxiliary material lap groove, so as to better ensure the integrity of the thermally-broken bridge multi-track lower frame, and improve the air tightness by the first sealing strip.

[0013] Furthermore, the outdoor area of ​​the broken bridge multi-track lower frame is connected to the indoor drainage cavity through the first air intake path, and the first air intake path has a first transverse air intake path extending from the outdoor area of ​​the broken bridge multi-track lower frame toward the indoor side, and a first vertical air intake path extending upward from the indoor end of the first transverse air intake path to the indoor drainage cavity. The main broken bridge profile is provided with air intake holes on the first transverse air intake path and the first vertical air intake path, and the auxiliary broken bridge profile is provided with air intake holes on the first transverse air intake path. The first insulation strip and the second insulation strip are both located on the outdoor side of the first vertical air intake path, and are respectively located on the lower side and the upper side of the first transverse air intake path. The first air intake path introduces external air into the indoor drainage cavity, so that water in the indoor drainage cavity is better discharged, which helps to improve the watertightness.

[0014] Furthermore, the remaining door and window sashes except the door and window sashes on the indoor side of the plurality of door and window sashes are slidably mounted on the auxiliary thermally-broken bridge profile, and the auxiliary thermally-broken bridge profile is provided with a plurality of auxiliary material track portions and auxiliary material frame portions that are arranged opposite to each other along the indoor and outdoor directions, the auxiliary material track portions are used to slide with the door and window sashes, and the auxiliary material frame portions are used to resist the indoor side of the lower end of the door and window sashes. In this way, the sliding installation of the plurality of door and window sashes that are arranged side by side along the indoor and outdoor directions on the auxiliary thermally-broken bridge profile and the main thermally-broken bridge profile can be reliably achieved.

[0015] Furthermore, each group of the auxiliary material track portion and the auxiliary material frame portion is also used to seal with the door and window sashes, and an auxiliary material drainage cavity located at the lower side of the door and window sash is formed between the two. The auxiliary material drainage cavity is connected to the outdoor area of ​​the broken bridge multi-track lower frame through the second drainage path; the second drainage path has a second vertical drainage path extending downward from the auxiliary material drainage cavity, and a second horizontal drainage path extending from the lower end of the second vertical drainage path toward the outdoor side, and the auxiliary broken bridge profile is provided with drainage holes on the second vertical drainage path and the second horizontal drainage path; the second drainage path in the auxiliary broken bridge profile is located on the outdoor side of the second thermal insulation strip. In this way, in addition to adopting isobaric structure drainage at the indoor drainage cavity of the broken bridge multi-track lower frame, it also adopts isobaric structure drainage at the other auxiliary material drainage cavities, which greatly improves the overall watertightness of the broken bridge multi-track lower frame, and ultimately enhances the product competitiveness of sliding doors and windows.

[0016] Furthermore, the outdoor area of ​​the broken bridge multi-track lower frame is connected to the auxiliary material drainage cavity through a second air intake path; the second air intake path has a second transverse air intake path extending from the outdoor area of ​​the broken bridge multi-track lower frame toward the indoor side, and a second vertical air intake path extending upward from the indoor end of the second transverse air intake path to the auxiliary material drainage cavity, and the auxiliary broken bridge profile is provided with air intake holes on the second transverse air intake path and the second vertical air intake path; the second air intake paths in the auxiliary broken bridge profile are all located on the outdoor side of the second thermal insulation strip. The second air intake path introduces external air into each auxiliary material drainage cavity, so that the water in each auxiliary material drainage cavity can be better discharged, which helps to improve the watertightness.

[0017] Furthermore, the door and window sash has a sash frame lower profile and a second sealing strip fixed to the sash frame lower profile, and the outdoor surfaces of the indoor rail part and the auxiliary material rail part are used to abut against the second sealing strip; the outdoor sides of the indoor frame part and the auxiliary material frame part are fixed with a third sealing strip, and the third sealing strip is used to abut against the indoor surface of the sash frame lower profile. In this way, the air tightness of the indoor drainage cavity and the auxiliary material drainage cavity is reliably guaranteed, which helps the broken bridge multi-track lower frame to achieve better isobaric drainage in the indoor drainage cavity and the auxiliary material drainage cavity.

[0018] Furthermore, the main thermal break profile and the auxiliary thermal break profile are both thermal break aluminum profiles, so that the main thermal break profile and the auxiliary thermal break profile have the characteristics of thermal insulation performance and light weight, thereby improving the product competitiveness of sliding doors and windows.

[0019] The utility model also provides a sliding door and window, comprising a fixed outer frame, a plurality of door and window sashes movably mounted on the outer frame, and the above-mentioned thermally-broken-bridge multi-track lower frame drainage structure, wherein the thermally-broken-bridge multi-track lower frame is a lower profile of the outer frame, and the plurality of door and window sashes are movably assembled on the thermally-broken-bridge multi-track lower frame.

[0020] As described above, the broken bridge multi-track lower frame drainage structure and sliding doors and windows involved in the utility model have the following beneficial effects:

[0021] 1. The present application sets the multi-track lower frame of the broken bridge constituting the lower profile of the outer frame as a split structure, which is fixed by the main broken bridge profile and the auxiliary broken bridge profile which are independent of each other. Combined with the structure in which the auxiliary broken bridge profile is fixed on the top of the main broken bridge profile, the first thermal insulation strip in the main broken bridge profile and the second thermal insulation strip in the auxiliary broken bridge profile are staggered in the up-down direction, so that the part of the main broken bridge profile and the auxiliary broken bridge profile located on the upper side of the first thermal insulation strip and the lower side of the second thermal insulation strip can be used for drainage. At the same time, the auxiliary broken bridge profile is located on the outdoor side of the indoor track part, that is, the auxiliary broken bridge profile is located on the outdoor side of the indoor drainage cavity, so the second thermal insulation strip must be located on the outdoor side of the indoor drainage cavity, thereby allowing the indoor drainage cavity to drain downward. Therefore, based on the matching structure of the main thermal break profile and the auxiliary thermal break profile, the first drainage path used for draining water from the indoor drainage cavity to the outdoor side in the present application can first drain water downward and then drain water to the outdoor side, and a part of the first drainage path can be arranged in the area on the upper side of the first thermal insulation strip and the lower side of the second thermal insulation strip. Ultimately, the first drainage path can drain water downward without passing through the thermal break cavity where the first thermal insulation strip and the second thermal insulation strip are located, so that the indoor side of the thermal break multi-track lower frame adopts the isobaric structural drainage principle.

[0022] 2. Without changing the visible height of the indoor side of the broken bridge multi-track lower frame, this application adopts the isobaric structure drainage principle to drain water, and the watertightness reaches more than 500Pa. Compared with the 350Pa watertightness that can be achieved based on the water head structure drainage principle in the prior art, this application reliably achieves a significant improvement in watertightness without increasing the visible height of the indoor side of the broken bridge multi-track lower frame. Since the indoor visible height of the broken bridge multi-track lower frame is not increased, the cost of the broken bridge multi-track lower frame will not be increased, and the appearance of the broken bridge multi-track lower frame and sliding doors and windows can be guaranteed.

[0023] 3. The indoor side of the multi-track lower frame of the broken bridge of the present application adopts the isobaric structural drainage principle, which requires that the indoor track part and the indoor frame part are sealed with the indoor door and window sashes, thereby improving the air tightness of the multi-track lower frame of the broken bridge and the sliding doors and windows.

[0024] 4. The thermal break multi-track lower frame is fixed by independent main thermal break profiles and auxiliary thermal break profiles. Compared with the integrated thermal break multi-track lower frame in the prior art, the areas of the main thermal break profiles and the auxiliary thermal break profiles can be reduced, which can avoid deformation of the main thermal break profiles and the auxiliary thermal break profiles during the extrusion process, improve the efficiency of profile extrusion, and avoid deformation of the main thermal break profiles and the auxiliary thermal break profiles during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the sliding door and window in this application.

[0026] Figure 2 for Figure 1 Schematic diagram of the transverse section, which omits the multi-track lower frame of the broken bridge.

[0027] Figure 3 for Figure 1 Schematic diagram of the longitudinal section.

[0028] Figure 4 for Figure 3 Drainage diagram of .

[0029] Figure 5 for Figure 3 Intake diagram.

[0030] Figure 6 for Figure 3 Schematic diagram of the structure of the multi-track lower frame of the interrupted bridge.

[0031] Figure 7 This is a schematic diagram of the structure of the main broken bridge profile in this application.

[0032] Figure 8 for Figure 7 Left view of .

[0033] Fig. 9 This is a schematic diagram of the structure of the auxiliary thermal break profile in this application.

[0034] Fig.10 for Fig. 9 Left view of .

[0035] Component number description

[0036] 10 Broken Bridge Multi-Track Lower Frame

[0037] 20 Main broken bridge profile

[0038] 21 First insulation strip

[0039] 22 Indoor track section

[0040] 23 Indoor side frame

[0041] 24 Indoor drainage cavity

[0042] 25 Main body frame part

[0043] 26 Main material horizontal edge

[0044] 27 The vertical edge of the first main material

[0045] 28 Second main material vertical edge

[0046] 29 The third main material vertical edge

[0047] 210 Main material edge banding

[0048] 211 Main material overlap

[0049] 30 Auxiliary Broken Bridge Profile

[0050] 31 Second insulation strip

[0051] 32 Auxiliary material body frame part

[0052] 321 Auxiliary material outer horizontal edge

[0053] 322 Auxiliary material inner horizontal edge

[0054] 33 Auxiliary material vertical edge

[0055] 34 Auxiliary material lap groove

[0056] 35 Auxiliary material track department

[0057] 351 Outdoor track

[0058] 352 Intermediate track

[0059] 36 Auxiliary material frame

[0060] 361 Outdoor side frame

[0061] 362 middle frame

[0062] 37 Auxiliary material drainage cavity

[0063] 371 Outdoor drainage cavity

[0064] 372 Intermediate drainage cavity

[0065] 41 First drainage path

[0066] 411 First vertical drainage path

[0067] 412 First lateral drainage path

[0068] 42 Second drainage path

[0069] 421 Second vertical drainage path

[0070] 422 Second lateral drainage path

[0071] 43 Drainage holes

[0072] 51 First intake path

[0073] 511 First transverse air intake path

[0074] 512 first vertical air intake path

[0075] 52 Second intake path

[0076] 521 Second transverse air intake path

[0077] 522 Second vertical air intake path

[0078] 53 Air Inlet

[0079] 61 Indoor side doors and windows

[0080] 62 Middle door and window sash

[0081] 63 Outdoor doors and windows

[0082] 64 Sash frame lower profile

[0083] 71 First sealing strip

[0084] 72 Second sealing strip

[0085] 73 Third sealing strip

[0086] 80 Frame

[0087] 90 Screw DETAILED DESCRIPTION

[0088] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0089] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0090] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or may be indirectly connected to the other element through an intermediate element.

[0091] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0092] The utility model provides a broken bridge multi-track lower frame drainage structure, and a sliding door and window including the structure. In the following embodiments, the thickness direction of the sliding door and window is defined as the front-to-back direction, the height direction of the sliding door and window is defined as the up-down direction, and the width direction of the sliding door and window is defined as the left-right direction; and the thickness direction of the sliding door and window is also the indoor and outdoor direction, the outdoor direction is the front direction, and the indoor direction is the rear direction. Based on this, Figure 3 In the view shown, the front and back sides of the paper are respectively the left and right directions, the left and right sides of the paper are respectively the front and rear directions, and the upper and lower sides of the paper are respectively the upper and lower directions.

[0093] like Figures 1 to 3 As shown, the sliding door and window involved in the present application includes a fixed outer frame 80, and a plurality of door and window sashes that are installed on the outer frame 80 so as to be movable left and right. The outer frame 80 is fixed in the door and window openings of the building to realize the fixed installation of the sliding door and window as a whole in the building. The outer frame 80 includes a pair of vertical profiles that are arranged side by side left and right and extend up and down, and a pair of horizontal profiles that are arranged side by side up and down and extend left and right. The pair of vertical profiles of the outer frame 80 are its left profile and right profile, and the pair of horizontal profiles of the outer frame 80 are its upper profile and lower profile. The number of door and window sashes is more than two, such as two, three, four, etc. For the convenience of description, the following description is based on the configuration of three door and window sashes in the sliding door and window as an example.

[0094] like Figures 1 to 3As shown, the three door and window sashes in the sliding door and window are arranged side by side in the indoor and outdoor directions. The door and window sashes distributed on the rear side and close to the indoor are defined as indoor door and window sashes 61, the door and window sashes distributed in the middle are defined as middle door and window sashes 62, and the door and window sashes distributed on the front side and close to the outdoor are defined as outdoor door and window sashes 63. In this way, along the direction toward the outdoors, the indoor door and window sashes 61, the middle door and window sashes 62 and the outdoor door and window sashes 63 are arranged from back to front. The indoor door and window sashes 61, the middle door and window sashes 62 and the outdoor door and window sashes 63 all include a sash frame and a sash panel installed in the sash frame, and the sash panel is preferably glass. The sash frame also includes a pair of vertical profiles that are side by side and extend up and down and a pair of horizontal profiles that are side by side and extend left and right. The pair of vertical profiles of the sash frame is its left profile and right profile, and the pair of horizontal profiles of the sash frame is its upper profile and lower profile.

[0095] The multi-track lower frame drainage structure of the broken bridge involved in the present application is arranged in the lower profile of the outer frame 80. Specifically, Figure 3 As shown, the broken bridge multi-track lower frame drainage structure involved in the present application includes a broken bridge multi-track lower frame 10, which constitutes the lower profile of the outer frame 80, and the indoor door and window sash 61, the middle door and window sash 62 and the outdoor door and window sash 63 can be slidably assembled on the broken bridge multi-track lower frame 10 in a left-right movable manner. The broken bridge multi-track lower frame 10 is a split structure, which includes a main broken bridge profile 20 and an auxiliary broken bridge profile 30, the main broken bridge profile 20 and the auxiliary broken bridge profile 30 are two independent broken bridge profiles, the main broken bridge profile 20 and the auxiliary broken bridge profile 30 are fixedly connected, and the two are fixedly connected to form the broken bridge multi-track lower frame 10. A thermal break profile refers to a profile with thermal insulation strips fixed inside; a pair of thermal insulation strips inside the main thermal break profile 20 is defined as a first thermal insulation strip 21, and a pair of thermal insulation strips inside the auxiliary thermal break profile 30 is defined as a second thermal insulation strip 31. The first thermal insulation strip 21 and the second thermal insulation strip 31 are preferably both PA66 thermal insulation strips.

[0096] Furthermore, if Figure 3 and Figure 6As shown, the indoor side of the main broken bridge profile 20 is provided with an indoor side track portion 22 and an indoor side frame portion 23, and the length direction of the indoor side track portion 22 and the indoor side frame portion 23 are consistent with the length direction of the main broken bridge profile 20, and at the same time, the indoor side track portion 22 and the indoor side frame portion 23 are arranged front and back in the indoor and outdoor direction. The indoor side track portion 22 and the sash frame lower profile 64 of the indoor door and window sash 61 are slidably matched, and the indoor side frame portion 23 abuts against the indoor side (i.e., the rear side) of the lower end of the sash frame lower profile 64 in the indoor door and window sash 61, and the indoor side track portion 22 is distributed on the outdoor side (i.e., the front side) of the indoor side frame portion 23. The indoor rail portion 22 and the indoor frame portion 23 are both sealed with the lower frame profile 64 of the indoor door and window sash 61, and an indoor drainage cavity 24 is also formed between the indoor rail portion 22 and the indoor frame portion 23. The indoor drainage cavity 24 is located on the lower side of the lower frame profile 64 of the indoor door and window sash 61.

[0097] Furthermore, if Figure 3 and Figure 4 As shown, the indoor drainage cavity 24 is connected to the outdoor area of ​​the thermally-broken multi-track lower frame 10 through the first drainage path 41, and the indoor drainage cavity 24 drains water to the outdoor side of the thermally-broken multi-track lower frame 10 through the first drainage path 41. In particular, the auxiliary thermally-broken bridge profile 30 is fixed on the top of the main thermally-broken bridge profile 20, and the first thermally-broken strip 21 in the main thermally-broken bridge profile 20 and the second thermally-broken strip 31 in the auxiliary thermally-broken bridge profile 30 are staggered in the up-down direction, the first thermally-broken strip 21 is distributed on the lower side, and the second thermally-broken strip 31 is distributed on the upper side, so that the part of the main thermally-broken bridge profile 20 and the auxiliary thermally-broken bridge profile 30 located on the upper side of the first thermally-broken strip 21 and the lower side of the second thermally-broken strip 31 can be used for drainage. At the same time, the auxiliary thermal break profile 30 is located on the outdoor side of the indoor track portion 22, and the auxiliary thermal break profile 30 is also located on the outdoor side of the indoor drainage cavity 24, so that the second thermal insulation strip 31 in the auxiliary thermal break profile 30 must be located on the outdoor side of the indoor drainage cavity 24, so that the lower area of ​​the indoor drainage cavity 24 avoids the second thermal insulation strip 31, or in other words, the indoor drainage cavity 24 will not pass through the second thermal insulation strip 31 when draining downward, thereby allowing the indoor drainage cavity 24 to drain downward.

[0098] Based on the split structure of the thermal-break multi-track lower frame 10 and the matching structure between the main thermal-break profile 20 and the auxiliary thermal-break profile 30, the first drainage path 41 used for draining water from the indoor drainage cavity 24 to the outdoor side can first drain water downwards and then drain water to the outdoor side. Based on this, the preferred structure of the first drainage path 41 in the present application is: Figure 4As shown, the first drainage path 41 has a first vertical drainage path 411 extending downward from the indoor drainage cavity 24, and a first transverse drainage path 412 extending from the lower end of the first vertical drainage path 411 toward the outdoor side. The main thermal break profile 20 is provided with drainage holes 43 on the first vertical drainage path 411 and the first transverse drainage path 412, and the auxiliary thermal break profile 30 is provided with drainage holes 43 on the first transverse drainage path 412. The first drainage path 41 is composed of a plurality of orderly arranged and interconnected drainage holes 43. The first vertical drainage path 411 is used for downward drainage of the indoor drainage cavity 24, and the first transverse drainage path 412 is used for forward drainage of the indoor drainage cavity 24 horizontally toward the outdoor side. The first thermal insulation strip 21 and the second thermal insulation strip 31 are both located on the outdoor side of the first vertical drainage path 411, and the first vertical drainage path 411 will not pass through the thermal insulation cavity where the first thermal insulation strip 21 is located in the main thermal insulation profile 20, and the thermal insulation cavity where the second thermal insulation strip 31 is located in the auxiliary thermal insulation profile 30; at the same time, the first thermal insulation strip 21 is located on the lower side of the first transverse drainage path 412, and the second thermal insulation strip 31 is located on the upper side of the first transverse drainage path 412, or in other words, the first transverse drainage path 412 is located in the area above the first thermal insulation strip 21 and below the second thermal insulation strip 31, and the first transverse drainage path 412 will not pass through the thermal insulation cavity where the first thermal insulation strip 21 is located in the main thermal insulation profile 20, and the thermal insulation cavity where the second thermal insulation strip 31 is located in the auxiliary thermal insulation profile 30.

[0099] Therefore, based on the split structure of the multi-track broken bridge lower frame 10 and the matching structure of the main broken bridge profile 20 and the auxiliary broken bridge profile 30, the present application enables the first drainage path 41 to drain water downward first and then drain water to the outside in the horizontal direction, so as to realize the isobaric structural drainage principle adopted on the indoor side of the multi-track broken bridge lower frame 10. Without changing the visible height of the indoor side of the multi-track broken bridge lower frame 10, the present application adopts the isobaric structural drainage principle to drain water, and the watertightness reaches more than 500Pa. Compared with the 350Pa watertightness that can be achieved based on the water head structural drainage principle in the prior art, the present application reliably realizes a significant improvement in watertightness without increasing the visible height of the indoor side of the multi-track broken bridge lower frame 10, meets the market's requirements for high watertightness of large-opening products, and improves product competitiveness.

[0100] Furthermore, the present application ensures high water tightness without changing the appearance of the broken bridge multi-track lower frame 10, so that the isobaric drainage structure is established in the thermally insulated broken bridge profile. Since the visible height of the indoor side of the broken bridge multi-track lower frame 10 is not increased, the cost of the broken bridge multi-track lower frame 10 will not be increased, and the appearance of the broken bridge multi-track lower frame 10 and the sliding doors and windows can be guaranteed. In addition, the indoor side of the broken bridge multi-track lower frame 10 in the present application adopts the isobaric drainage principle, which requires that the indoor side track portion 22 and the indoor side frame portion 23 are both sealed with the indoor side door and window sash 61. The isobaric drainage structure also improves the air tightness of the broken bridge multi-track lower frame 10 and the sliding doors and windows, while ensuring thermal insulation performance and high water tightness. In addition, the thermal break multi-track lower frame 10 is fixed by a main thermal break profile 20 and an auxiliary thermal break profile 30 which are independent of each other. Compared with the integrated thermal break multi-track lower frame 10 in the prior art, the area of ​​the main thermal break profile 20 and the auxiliary thermal break profile 30 can be reduced, which can avoid deformation of the main thermal break profile 20 and the auxiliary thermal break profile 30 during the extrusion process, improve the efficiency of profile extrusion, make profile extrusion and processing more convenient, improve profile extrusion and processing properties, and avoid deformation of the main thermal break profile 20 and the auxiliary thermal break profile 30 during transportation.

[0101] Furthermore, if Figure 3 As shown, the middle door and window leaf 62 and the outdoor door and window leaf 63 can be installed on the auxiliary broken bridge profile 30 so as to be movable left and right. Figure 3 and Figure 6 As shown, the auxiliary thermal break bridge profile 30 is provided with two groups of auxiliary material track portions 35 and auxiliary material frame portions 36 that are distributed front to back along the indoor and outdoor directions, and the length directions of the auxiliary material track portions 35 and the auxiliary material frame portions 36 are consistent with the length direction of the auxiliary thermal break bridge profile 30. A group of auxiliary material track portions 35 and auxiliary material frame portions 36 close to the outdoors are matched with the outdoor door and window sash 63, and the auxiliary material track portions 35 and auxiliary material frame portions 36 in this group are defined as outdoor track portions 351 and outdoor frame portions 361, respectively, then the outdoor track portions 351 are slidably matched with the sash frame lower profile 64 of the outdoor door and window sash 63, and the outdoor frame portion 361 abuts against the indoor side of the lower end of the sash frame lower profile 64 in the outdoor door and window sash 63. A group of auxiliary material track parts 35 and auxiliary material frame parts 36 near the room cooperate with the middle door and window sash 62, and the auxiliary material track parts 35 and auxiliary material frame parts 36 in the group are respectively defined as the middle track parts 352 and the middle frame parts 362, then the middle track parts 352 are slidably matched with the lower profile 64 of the sash frame of the middle door and window sash 62, and the middle frame parts 362 are in contact with the indoor side of the lower end of the lower profile 64 of the sash frame in the middle door and window sash 62. In this way, the sliding installation of three door and window sashes arranged side by side in the front and back on the auxiliary thermally-broken bridge profile 30 and the main thermally-broken bridge profile 20 is reliably realized.

[0102] Furthermore, if Figure 3 and Figure 6As shown, both the outdoor track portion 351 and the outdoor frame portion 361 are sealed with the lower profile 64 of the outdoor door and window sash 63, and an auxiliary material drainage cavity 37 is formed between the outdoor track portion 351 and the outdoor frame portion 361. The auxiliary material drainage cavity 37 is located below the lower profile 64 of the sash frame in the outdoor door and window sash 63, and the auxiliary material drainage cavity 37 is defined as the outdoor drainage cavity 371. At the same time, both the middle track portion 352 and the middle frame portion 362 are sealed with the lower profile 64 of the sash frame of the middle door and window sash 62, and an auxiliary material drainage cavity 37 is formed between the middle track portion 352 and the middle frame portion 362. The auxiliary material drainage cavity 37 is located below the lower profile 64 of the sash frame in the middle door and window sash 62, and the auxiliary material drainage cavity 37 is defined as the middle drainage cavity 372. The two auxiliary material drainage chambers 37 (i.e., the outdoor drainage chamber 371 and the middle drainage chamber 372) in the auxiliary thermally-broken bridge profile 30 are both connected to the outdoor area of ​​the thermally-broken bridge multi-track lower frame 10 through the second drainage path 42, and the outdoor drainage chamber 371 and the middle drainage chamber 372 both drain to the outdoor side of the thermally-broken bridge multi-track lower frame 10 through the second drainage path 42.

[0103] Similar to the first drainage path 41, the second drainage path 42 also drains water downward first and then drains water outdoors. Specifically, the preferred structure of the second drainage path 42 is as follows: Figure 4 As shown, the second drainage path 42 has a second vertical drainage path 421 extending downward from the outdoor drainage cavity 371 and the middle drainage cavity 372, and a second transverse drainage path 422 extending from the lower end of the second vertical drainage path 421 toward the outdoor side. The auxiliary thermal break profile 30 is provided with drainage holes 43 on the second vertical drainage path 421 and the second transverse drainage path 422. The second drainage path 42 is composed of a plurality of orderly arranged and interconnected drainage holes 43. The second vertical drainage path 421 is used for downward drainage of the outdoor drainage cavity 371 and the middle drainage cavity 372, and the second transverse drainage path 422 is used for horizontal forward drainage of the outdoor drainage cavity 371 and the middle drainage cavity 372 toward the outdoor side. In particular, the second drainage path 42 in the auxiliary thermal break profile 30 is located on the outdoor side of the second thermal insulation strip 31, and the second vertical drainage path 421 and the second horizontal drainage path 422 will not pass through the thermal break cavity where the second thermal insulation strip 31 is located in the auxiliary thermal break profile 30. As a result, the thermal break multi-track lower frame 10 also adopts isobaric structure drainage in the outdoor drainage cavity 371 and the middle drainage cavity 372, which greatly improves the overall watertight performance of the thermal break multi-track lower frame 10, and ultimately enhances the product competitiveness of sliding doors and windows.

[0104] Furthermore, in order to better enable the thermal break multi-track lower frame 10 to perform isobaric drainage in the indoor drainage chamber 24, the middle drainage chamber 372 and the outdoor drainage chamber 371, an air intake path is also provided in the thermal break multi-track lower frame 10 for introducing external air into the indoor drainage chamber 24, the middle drainage chamber 372 and the outdoor drainage chamber 371.

[0105] The air introduction structure of the indoor drainage cavity 24 is as follows: Figure 3 and Figure 5 As shown, the outdoor area of ​​the broken bridge multi-track lower frame 10 is connected to the indoor drainage cavity 24 via the first air intake path 51. In the cross-sectional structure of the broken bridge multi-track lower frame 10, the extension path of the first air intake path 51 is substantially the same as the extension path of the first drainage path 41, and the first air intake path 51 has a first transverse air intake path 511 extending from the outdoor area of ​​the broken bridge multi-track lower frame 10 toward the indoor side, and a first vertical air intake path 512 extending upward from the indoor end of the first transverse air intake path 511 to the indoor drainage cavity 24. The main broken bridge profile 20 is provided with air intake holes 53 on the first transverse air intake path 511 and the first vertical air intake path 512, and the auxiliary broken bridge profile 30 is provided with air intake holes 53 on the first transverse air intake path 511, and the first air intake path 51 is composed of a plurality of orderly arranged and interconnected air intake holes 53. The first heat insulation strip 21 and the second heat insulation strip 31 are both located on the outdoor side of the first vertical air intake path 512, and are respectively located on the lower side and the upper side of the first transverse air intake path 511, so that the first vertical air intake path 512 and the first transverse air intake path 511 will not pass through the broken bridge cavity where the first heat insulation strip 21 is located in the main broken bridge profile 20, and the broken bridge cavity where the second heat insulation strip 31 is located in the auxiliary broken bridge profile 30. The first air intake path 51 introduces external air into the indoor drainage cavity 24, so that the water in the indoor drainage cavity 24 can be better discharged, which helps to improve the watertightness.

[0106] The air introduction structure of the middle drainage chamber 372 and the outdoor drainage chamber 371 is as follows: Figure 3 and Figure 5As shown, the outdoor area of ​​the broken bridge multi-track lower frame 10 is connected to the middle drainage cavity 372 and the outdoor drainage cavity 371 respectively through the second air intake path 52. In the cross-sectional structure of the broken bridge multi-track lower frame 10, the extension path of the second air intake path 52 is substantially the same as the extension path of the second drainage path 42, and the second air intake path 52 has a second transverse air intake path 521 extending from the outdoor area of ​​the broken bridge multi-track lower frame 10 toward the indoor side, and a second vertical air intake path 522 extending upward from the indoor end of the second transverse air intake path 521 to the middle drainage cavity 372 and the outdoor drainage cavity 371. The auxiliary broken bridge profile 30 is provided with air intake holes 53 on both the second transverse air intake path 521 and the second vertical air intake path 522, and the second air intake path 52 is composed of a plurality of orderly arranged and interconnected air intake holes 53. The second air inlet path 52 in the auxiliary thermal break profile 30 is located on the outdoor side of the second thermal insulation strip 31, so that the second vertical air inlet path 522 and the second horizontal air inlet path 521 will not pass through the thermal break cavity where the second thermal insulation strip 31 is located in the auxiliary thermal break profile 30. The second air inlet path 52 introduces external air into the middle drainage cavity 372 and the outdoor drainage cavity 371, so that the water in the middle drainage cavity 372 and the outdoor drainage cavity 371 can be better discharged, which helps to improve the watertightness.

[0107] Furthermore, the preferred structure of the main broken bridge profile 20 is as follows: Figures 6 to 8 As shown, the main thermal break profile 20 includes a main body frame 25, a main body horizontal side 26, and a first main body vertical side 27, a second main body vertical side 28, and a third main body vertical side 29 extending upward from the top of the main body frame 25. The length directions of the main body horizontal side 26, the first main body vertical side 27, the second main body vertical side 28, and the third main body vertical side 29 are all consistent with the length direction of the main thermal break profile 20. The first main body vertical side 27, the second main body vertical side 28, and the third main body vertical side 29 are arranged side by side from back to front in the direction from indoor to outdoor. The first main material vertical side 27 is arranged at the indoor side edge of the main thermally-insulated bridge profile 20, the main material horizontal side 26 is horizontally connected between the first main material vertical side 27 and the second main material vertical side 28, the indoor track portion 22 and the indoor frame portion 23 both extend upward from the main material horizontal side 26, and the main material horizontal side 26 is located at the bottom of the indoor drainage cavity 24. The first thermal insulation strip 21 is fixed in the main material body frame 25; and in the front-to-back direction, the first thermal insulation strip 21 is located at the outdoor side of the first main material vertical side 27 and the second main material vertical side 28, and the first thermal insulation strip 21 is also located at the indoor side of the third main material vertical side 29. The third main material vertical side 29 is used for fixed connection between the main thermally-insulated bridge profile 20 and the auxiliary thermally-insulated bridge profile 30. The auxiliary thermal break profile 30 is integrally arranged on the upper side of the main material body frame 25 located on the second main material vertical side 28 and the outdoor side of the indoor track portion 22 , and the auxiliary thermal break profile 30 is fixedly connected to the third main material vertical side 29 .

[0108] Furthermore, if Figures 6 to 8 As shown, the main material horizontal side 26 is provided with a drainage hole 43 located on the first vertical drainage path 411, and the second main material vertical side 28 and the third main material vertical side 29 are provided with drainage holes 43 located on the first horizontal drainage path 412, so that the first drainage path 41 is located on the upper side of the main material body frame 25. At the same time, the main material horizontal side 26 is provided with an air intake hole 53 located on the first vertical air intake path 512, and the second main material vertical side 28 and the third main material vertical side 29 are provided with an air intake hole 53 located on the first horizontal air intake path 511, so that the first air intake path 51 is located on the upper side of the main material body frame 25. The drainage hole 43 and the air intake hole 53 provided in the main broken bridge profile 20 can be in the same hole position or in different hole positions. The main thermal break profile 20 is provided with drainage holes 43 and air intake holes 53 on the main material horizontal side 26, the second main material vertical side 28 and the third main material vertical side 29, so that the first drainage path 41 and the first air intake path 51 are both located outside the first thermal insulation strip 21 and the second thermal insulation strip 31, and neither passes through the thermal break cavity where the first thermal insulation strip 21 and the second thermal insulation strip 31 are located, thereby reliably ensuring that the indoor side of the thermal break multi-track lower frame 10 adopts the isobaric structural drainage principle.

[0109] Furthermore, the preferred structure of the auxiliary thermal break profile 30 is as follows: Figure 6 , Fig. 9 and Fig.10 As shown, the auxiliary thermal break bridge profile 30 includes an auxiliary material body frame 32, and two auxiliary material vertical sides 33 extending downward from the bottom of the auxiliary material body frame 32, and the second thermal insulation strip 31 is fixed in the auxiliary material body frame 32. The length direction of the two auxiliary material vertical sides 33 is consistent with the length direction of the auxiliary thermal break bridge profile 30, and the two auxiliary material vertical sides 33 are arranged side by side in the indoor and outdoor directions. The lower ends of the two auxiliary material vertical sides 33 extend downward to the top surface of the main material body frame 25 and abut against the main material body frame 25. One of the two auxiliary material vertical sides 33 is fixedly connected to the third main material vertical side 29 by screws 90, thereby fixing the auxiliary thermal break bridge profile 30 on the top of the main thermal break bridge profile 20 to ensure the integrity of the thermal break multi-track lower frame 10. Preferably, the third main material vertical side 29 is arranged close to the outdoor side of the main material body frame 25, and the auxiliary material vertical side 33 located at the most outdoor side of the two auxiliary material vertical sides 33 abuts against the outdoor side of the third main material vertical side 29, and the two are fixedly connected by screws 90. In this way, the holes for screwing the screws 90 into the auxiliary broken bridge profile 30 and the main broken bridge profile 20 are close to the outdoor side of the broken bridge multi-track lower frame 10, which facilitates the screwing in and locking of the screws 90, thereby improving the convenience of the locking operation of the auxiliary broken bridge profile 30 and the main broken bridge profile 20.

[0110] Furthermore, if Figure 6 , Fig. 9 and Fig.10As shown, the outdoor rail portion 351, the outdoor frame portion 361, the middle rail portion 352 and the middle frame portion 362 all extend upward from the top of the auxiliary material body frame portion 32, and the auxiliary material body frame portion 32 is provided with an auxiliary material outer horizontal edge portion 321 between the outdoor rail portion 351 and the outdoor frame portion 361, and the auxiliary material body frame portion 32 is provided with an auxiliary material inner horizontal edge portion 322 between the middle rail portion 352 and the middle frame portion 362. In this way, the auxiliary material outer horizontal edge portion 321 is located at the bottom of the outdoor drainage cavity 371, and the auxiliary material inner horizontal edge portion 322 is located at the bottom of the middle drainage cavity 372. The upper second heat insulation strip 31 in the auxiliary material body frame portion 32 is fixedly embedded in the auxiliary material inner horizontal edge portion 322. Both the auxiliary material outer horizontal edge 321 and the auxiliary material inner horizontal edge 322 are provided with drainage holes 43 located on the second vertical drainage path 421, but the drainage hole 43 on the auxiliary material inner horizontal edge 322 is located on the outdoor side of the second thermal insulation strip 31; both auxiliary material vertical edges 33 are provided with drainage holes 43 located on the first transverse drainage path 412 and the second transverse drainage path 422, then the first transverse drainage path 412 and the second transverse drainage path 422 are both located on the lower side of the auxiliary material main body frame 32, avoiding passing through the thermal break cavity, and reliably ensuring that the indoor side of the thermal break multi-track lower frame 10 adopts the isobaric structural drainage principle. At the same time, both the auxiliary material outer horizontal side 321 and the auxiliary material inner horizontal side 322 are provided with air inlet holes 53 located on the second vertical air inlet path 522, but the air inlet holes 53 on the auxiliary material inner horizontal side 322 are located on the outdoor side of the second thermal insulation strip 31; both auxiliary material vertical sides 33 are provided with air inlet holes 53 located on the first horizontal air inlet path 511 and the second horizontal air inlet path 521, and the first horizontal air inlet path 511 and the second horizontal air inlet path 521 are both located on the lower side of the auxiliary material body frame 32. The drainage holes 43 and the air inlet holes 53 provided in the auxiliary thermally-insulated profile 30 can be in the same hole position or in different hole positions.

[0111] Furthermore, if Figure 6As shown, the main thermally-broken bridge profile 20 also includes a main material edge sealing portion 210 extending straight forward from the outdoor side of the second main material vertical side portion 28 toward the auxiliary thermally-broken bridge profile 30, and a main material overlap portion 211 provided at the outdoor side end of the main material edge sealing portion 210. The length directions of the main material edge sealing portion 210 and the main material overlap portion 211 are consistent with the length direction of the main thermally-broken bridge profile 20. A first sealing strip 71 is fixed in the main material overlap portion 211, and an auxiliary material overlap groove 34 is provided on the indoor side of the auxiliary thermally-broken bridge profile 30. The main material overlap portion 211 is accommodated in the auxiliary material overlap groove 34 and contacts the groove wall of the auxiliary material overlap groove 34. The first sealing strip 71 is accommodated in the auxiliary material overlap groove 34 and abuts against the groove wall of the auxiliary material overlap groove 34. On the premise of using screws 90 to lock the auxiliary thermal insulation profile 30 and the main thermal insulation profile 20, the present application also realizes the overlap between the auxiliary thermal insulation profile 30 and the main thermal insulation profile 20 through the overlap cooperation of the main material overlap portion 211 and the auxiliary material overlap groove 34, so as to better ensure the integrity of the thermal insulation multi-track lower frame 10 and improve the air tightness through the first sealing strip 71.

[0112] Preferably, if Figure 3 and Figure 6 As shown, drainage holes 43 and air inlet holes 53 which pass through from top to bottom are also provided on the indoor inner rail portion 22 and the main material edge sealing portion 210. The drainage holes 43 on the main material edge sealing portion 210 are communicated with the first transverse drainage path 412, and the air inlet holes 53 on the main material edge sealing portion 210 are communicated with the first transverse air inlet path 511, thereby realizing isobaric drainage of the thermal break multi-track lower frame 10 in the front area of ​​the indoor inner rail portion 22.

[0113] Furthermore, if Figure 3 As shown, each door and window sash is fixed with a second sealing strip 72 at the lower end of the front part of the lower profile 64 of the sash frame, and a third sealing strip 73 is fixed on the front surfaces of the outdoor frame portion 361, the middle frame portion 362 and the indoor frame portion 23. The second sealing strip 72 at the lower end of the outdoor door and window sash 63 abuts on the front surface of the outdoor track portion 351, and the third sealing strip 73 on the outdoor frame portion 361 abuts on the rear surface of the lower profile 64 of the sash frame of the outdoor door and window sash 63; the second sealing strip 72 at the lower end of the middle door and window sash 62 abuts on the front surface of the middle track portion 352, and the third sealing strip 73 on the middle frame portion 362 abuts on the rear surface of the lower profile 64 of the sash frame of the middle door and window sash 62; the second sealing strip 72 at the lower end of the indoor door and window sash 61 abuts on the front surface of the indoor track portion 22, and the third sealing strip 73 on the indoor frame portion 23 abuts on the rear surface of the lower profile 64 of the sash frame of the indoor door and window sash 61. In this way, the air tightness of the indoor drainage cavity 24 and the auxiliary material drainage cavity 37 can be reliably ensured, which helps the thermal break multi-track lower frame 10 to better achieve isobaric drainage in both the indoor drainage cavity 24 and the auxiliary material drainage cavity 37.

[0114] Preferably, the first sealing strip 71, the second sealing strip 72 and the third sealing strip 73 are all AT material sealing strips. In addition, the main thermally-insulated bridge profile 20 and the auxiliary thermally-insulated bridge profile 30 are both thermally-insulated aluminum profiles, so that the main thermally-insulated bridge profile 20 and the auxiliary thermally-insulated bridge profile 30 have the characteristics of thermal insulation performance and light weight, thereby improving the product competitiveness of sliding doors and windows.

[0115] In summary, the utility model effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

[0116] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A broken bridge multi-track lower frame drainage structure, comprising a broken bridge multi-track lower frame (10) for supporting multiple door and window sashes in a sliding door and window, characterized in that: The broken bridge multi-track lower frame (10) comprises a main broken bridge profile (20) fixedly provided with a first heat insulation strip (21), and an auxiliary broken bridge profile (30) fixedly provided with a second heat insulation strip (31), wherein the main broken bridge profile (20) and the auxiliary broken bridge profile (30) are two independent broken bridge profiles; The indoor side of the main thermal break profile (20) is provided with an indoor track portion (22) and an indoor frame portion (23) which are arranged opposite to each other along the indoor and outdoor directions; the indoor track portion (22) is used for slidingly cooperating with the indoor door and window sash (61) which is close to the indoor side among the plurality of door and window sashes and is located on the outdoor side of the indoor frame portion (23); the indoor track portion (22) and the indoor frame portion (23) are both used for sealingly cooperating with the indoor door and window sash (61), and an indoor drainage cavity (24) located below the indoor door and window sash (61) is formed between the indoor track portion (22) and the indoor frame portion (23); The auxiliary thermal break profile (30) is fixed on the top of the main thermal break profile (20) and is located on the outdoor side of the indoor track portion (22); The indoor drainage cavity (24) is connected to the outdoor area of ​​the thermally-broken multi-track lower frame (10) via a first drainage path (41); the first drainage path (41) comprises a first vertical drainage path (411) extending downward from the indoor drainage cavity (24), and a first transverse drainage path (412) extending from the lower end of the first vertical drainage path (411) toward the outdoor side; the main thermally-broken bridge profile (20) is provided with drainage holes (43) on the first vertical drainage path (411) and the first transverse drainage path (412); and the auxiliary thermally-broken bridge profile (30) is provided with drainage holes (43) on the first transverse drainage path (412); The first heat insulation strip (21) and the second heat insulation strip (31) are both located on the outdoor side of the first vertical drainage path (411), and are respectively located on the lower side and the upper side of the first horizontal drainage path (412).

2. The multi-track lower frame drainage structure for a broken bridge according to claim 1 is characterized by: The main thermal break profile (20) comprises a main body frame (25), a main body horizontal side (26), and a first main body vertical side (27), a second main body vertical side (28) and a third main body vertical side (29) all extending upward from the top of the main body frame (25); the first main body vertical side (27), the second main body vertical side (28) and the third main body vertical side (29) are arranged side by side in sequence from indoor to outdoor; the main body horizontal side (26) is horizontally connected between the first main body vertical side (27) and the second main body vertical side (28) and is located at the bottom of the indoor drainage cavity (24); the indoor track (22) and the indoor frame (23) both extend upward from the main body horizontal side (26); and the first thermal insulation strip (21) is fixedly arranged in the main body frame (25); The main material horizontal side (26) is provided with a drainage hole (43) located on the first vertical drainage path (411), and the second main material vertical side (28) and the third main material vertical side (29) are provided with drainage holes (43) located on the first horizontal drainage path (412), so that the first drainage path (41) is located on the upper side of the main material body frame (25); The auxiliary thermal break profile (30) is arranged on the upper side of the main material body frame (25) located on the outdoor side of the second main material vertical side (28) and the indoor track part (22), and the auxiliary thermal break profile (30) is fixedly connected to the third main material vertical side (29).

3. The multi-track lower frame drainage structure for a broken bridge according to claim 2 is characterized by: The auxiliary thermal break profile (30) comprises an auxiliary material body frame (32), and a plurality of auxiliary material vertical sides (33) extending downward from the bottom of the auxiliary material body frame (32), wherein the plurality of auxiliary material vertical sides (33) are arranged side by side along the indoor and outdoor directions, and the lower ends of the auxiliary material vertical sides (33) are in abutment with the main material body frame (25), and the second heat insulation strip (31) is fixedly arranged in the auxiliary material body frame (32); One of the auxiliary material vertical sides (33) is fixedly connected to the third main material vertical side (29) by means of screws (90), and drainage holes (43) located on the first transverse drainage path (412) are provided on the auxiliary material vertical sides (33), so that the first transverse drainage path (412) is located at the lower side of the auxiliary material main body frame (32).

4. The multi-track lower frame drainage structure for a broken bridge according to claim 3 is characterized by: The third main material vertical side (29) is arranged close to the outdoor side of the main material body frame (25), and the auxiliary material vertical side (33) located at the outdoor side most of the auxiliary material vertical sides (33) abuts against the outdoor side of the third main material vertical side (29), and the two are fixedly connected by screws (90).

5. The multi-track lower frame drainage structure for a broken bridge according to claim 2 is characterized by: The main thermal break profile (20) further comprises a main material edge sealing portion (210) extending from the outdoor side of the second main material vertical edge portion (28) toward the auxiliary thermal break profile (30), and a main material overlap portion (211) provided at the outdoor side end of the main material edge sealing portion (210), a first sealing strip (71) being fixed in the main material overlap portion (211), an auxiliary material overlap groove (34) being provided on the indoor side of the auxiliary thermal break profile (30), the main material overlap portion (211) being accommodated in the auxiliary material overlap groove (34) and in contact with the groove wall of the auxiliary material overlap groove (34), and the first sealing strip (71) being accommodated in the auxiliary material overlap groove (34) and in abutment with the groove wall of the auxiliary material overlap groove (34).

6. The multi-track lower frame drainage structure for a broken bridge according to claim 1, characterized in that: The outdoor area of ​​the thermally-broken multi-track lower frame (10) is connected to the indoor drainage cavity (24) via a first air intake path (51); the first air intake path (51) comprises a first transverse air intake path (511) extending from the outdoor area of ​​the thermally-broken multi-track lower frame (10) toward the indoor area, and a first vertical air intake path (512) extending upward from the indoor end of the first transverse air intake path (511) to the indoor drainage cavity (24); the main thermally-broken bridge profile (20) is provided with air intake holes (53) on the first transverse air intake path (511) and the first vertical air intake path (512); and the auxiliary thermally-broken bridge profile (30) is provided with air intake holes (53) on the first transverse air intake path (511); the first thermal insulation strip (21) and the second thermal insulation strip (31) are both located on the outdoor side of the first vertical air intake path (512), and are respectively located on the lower side and the upper side of the first transverse air intake path (511).

7. The multi-track lower frame drainage structure for a broken bridge according to claim 1, characterized in that: The remaining door and window sashes except the indoor door and window sash (61) among the plurality of door and window sashes are slidably mounted on the auxiliary thermally-insulated bridge profile (30), and the auxiliary thermally-insulated bridge profile (30) is provided with a plurality of auxiliary material track portions (35) and auxiliary material frame portions (36) that are arranged opposite to each other along the indoor and outdoor directions. The auxiliary material track portions (35) are used for slidably cooperating with the door and window sashes, and the auxiliary material frame portions (36) are used for resisting the indoor side of the lower end of the door and window sashes.

8. The multi-track lower frame drainage structure for a broken bridge according to claim 7 is characterized by: Each set of the auxiliary material track portion (35) and the auxiliary material frame portion (36) is also used for sealing with the door and window sashes, and an auxiliary material drainage cavity (37) located at the lower side of the door and window sash is formed between the two, and the auxiliary material drainage cavity (37) is connected to the outdoor side area of ​​the broken bridge multi-track lower frame (10) through a second drainage path (42); The second drainage path (42) comprises a second vertical drainage path (421) extending downward from the auxiliary material drainage cavity (37), and a second transverse drainage path (422) extending from the lower end of the second vertical drainage path (421) toward the outdoor side, and the auxiliary thermally-broken bridge profile (30) is provided with drainage holes (43) on both the second vertical drainage path (421) and the second transverse drainage path (422); The second drainage path (42) in the auxiliary thermal insulation profile (30) is located on the outdoor side of the second thermal insulation strip (31).

9. The broken bridge multi-track lower frame drainage structure according to claim 8, characterized in that: The outdoor side area of ​​the broken bridge multi-track lower frame (10) is connected to the auxiliary material drainage cavity (37) via the second air intake path (52); The second air intake path (52) comprises a second transverse air intake path (521) extending from the outdoor side area of ​​the thermally-broken multi-track lower frame (10) toward the indoor side, and a second vertical air intake path (522) extending upward from the indoor end of the second transverse air intake path (521) to the auxiliary material drainage cavity (37), and the auxiliary thermally-broken bridge profile (30) is provided with air intake holes (53) on both the second transverse air intake path (521) and the second vertical air intake path (522); The second air inlet path (52) in the auxiliary thermal break profile (30) is located on the outdoor side of the second thermal insulation strip (31).

10. The broken bridge multi-track lower frame drainage structure according to claim 7, characterized in that: The door and window sash comprises a sash frame lower profile (64) and a second sealing strip (72) fixed to the sash frame lower profile (64); the outdoor surfaces of the indoor rail portion (22) and the auxiliary material rail portion (35) are both used for abutting and matching with the second sealing strip (72); the outdoor sides of the indoor frame portion (23) and the auxiliary material frame portion (36) are both fixed with a third sealing strip (73); the third sealing strip (73) is used for abutting and matching with the indoor surface of the sash frame lower profile (64).

11. The multi-track lower frame drainage structure for a broken bridge according to claim 1, characterized in that: The main thermal break profile (20) and the auxiliary thermal break profile (30) are both thermal break aluminum profiles.

12. A sliding door and window, comprising a fixed outer frame (80), and a plurality of door and window sashes movably mounted on the outer frame (80), characterized in that: It also includes the thermal-break multi-track lower frame drainage structure as described in any one of claims 1 to 11, wherein the thermal-break multi-track lower frame (10) is the lower profile of the outer frame (80), and the plurality of door and window sashes are movably mounted on the thermal-break multi-track lower frame (10).

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