Door and window structure capable of being switched between side-hung state and push-pull state

Abstract

The utility model discloses a door and window structure capable of being switched between a flat opening state and a push-pull state. The door and window structure comprises an outer frame provided with a first connecting part; the transverse mullion is horizontally arranged in the outer frame and is provided with a second connecting part matched with the first connecting part in shape; the at least one vertical mullion is vertically arranged in the outer frame and is matched with the transverse mullion to divide the outer frame into a plurality of mounting areas; the side-hung frame is detachably mounted in any mounting area and correspondingly connected with the first connecting part and the second connecting part through opening hardware; the push-and-pull frame is detachably mounted in any mounting area, and the outer wall of the push-and-pull frame is correspondingly connected with the first connecting part and the second connecting part; wherein one of the side-hung frame and the sliding frame is installed, a side-hung door and window structure is formed when the side-hung frame is installed, and a sliding door and window structure is formed when the sliding frame is installed. Therefore, the door and window structure can be changed by simply replacing parts, so that the mounting form of the door and window structure can be freely switched according to the requirements of a user.

Description

Technical Field

[0001] The utility model relates to the field of door and window equipment, in particular to a door and window structure which can be switched between horizontal opening, pushing and pulling. Background Art

[0002] At present, with the improvement of people's living standards, the requirements for housing conditions are getting higher and higher. Not only do they require warmth in winter and coolness in summer, but they also require higher and higher lighting. Therefore, the windows of the house have become the focus of attention. The more popular and common window types on the market are sliding windows and casement windows. Casement windows refer to doors and windows with hinges installed on the sides of the doors and windows to open inward or outward, while sliding doors and windows mainly refer to doors and windows with window sashes pushed vertically left and right along the horizontal direction.

[0003] Generally speaking, the window frame structures of casement windows and sliding windows are quite different. Casement windows have their own corresponding window frame structures, and sliding windows also have their own corresponding upward and downward sliding structures. These structures cannot be changed, and the window frame structures of the two are not universal. To a certain extent, they are customized products. Therefore, customers are generally required to determine the window shape first. During processing and assembly, once the customer changes his mind and wants to change the window shape, it is usually impossible to change it unless the customer is willing to pay for the new window shape. This is often a huge loss for the customer, and the cost of regret is very high.

[0004] In addition, a certain amount of goods needs to be reserved for different window types, window frame structures for different purposes, or different series, and dealers need to reserve a certain amount of products. This often puts a lot of pressure on dealers to stock up, restricting their further development. Utility Model Content

[0005] The utility model provides a door and window structure that can be switched between horizontal opening, pushing and pulling, so as to realize free switching of the installation forms of the door and window structure.

[0006] In order to achieve the above technical objectives, the utility model adopts the following technical solutions:

[0007] The first aspect of the technical solution of the utility model provides a switchable door and window structure that can be opened, pushed or pulled, including:

[0008] An outer frame, wherein a first connecting portion is provided on the inner side of the outer frame;

[0009] A horizontal middle stile, which is installed in the middle of the outer frame in the horizontal direction, and has a second connecting portion on both the upper and lower sides of the horizontal middle stile; wherein the second connecting portion is parallel to the first connecting portion, so as to be used for installing a casement frame, a glass pressing line or a sliding frame;

[0010] At least one vertical middle stile, which is installed on the outer frame in the vertical direction, so as to divide the outer frame into a plurality of installation areas through the horizontal middle stile and at least one vertical middle stile;

[0011] A casement frame, which is detachably installed in any one of the installation areas, and the casement frame is respectively connected to the first connecting part and the second connecting part through opening hardware;

[0012] A sliding frame, which is detachably installed in any one of the installation areas, and the outer walls of the sliding frame are respectively connected to the first connecting part and the second connecting part correspondingly;

[0013] Wherein, the casement frame and the sliding frame are installed alternatively, so as to form a casement window structure when the casement frame is installed, or form a sliding window structure when the sliding frame is installed.

[0014] Preferably, the first connecting part includes a first casement connecting part and a first sliding connecting part, and the first sliding connecting part is located on one side of the first casement connecting part along the length direction of the outer frame;

[0015] The second connecting part includes a second casement connecting part and a second sliding connecting part, and the second sliding connecting part is located on one side of the second casement connecting part along the length direction of the horizontal middle stile; wherein, the second casement connecting part is adapted to the first casement connecting part for installing a casement frame or a glass pressing strip; the second sliding connecting part is adapted to the first sliding connecting part for installing a sliding frame.

[0016] Preferably, both the left and right sides of the vertical middle stile have a third connecting part; wherein, the third connecting part is adapted to the side wall of the casement frame for installing locking hardware.

[0017] Preferably, when the window and door structure is a casement window structure, the casement frame is installed in at least one of the installation areas, and a casement window is installed on the casement frame; fixed windows are installed in the remaining installation areas through glass pressing strips.

[0018] Preferably, when the window and door structure is a sliding window structure, the sliding frame is installed in at least one of the installation areas, and a sliding window is installed on the sliding frame; fixed windows are installed in the remaining installation areas through glass pressing strips.

[0019] Preferably, in the installation area of the sliding frame, a frame hook stile is installed on the third casement connecting part, and a sash hook stile is installed at the position corresponding to the frame hook stile on the sliding frame;

[0020] Wherein, the sash hook stile is hooked or separated from the frame hook stile as the sliding frame moves horizontally.

[0021] Preferably, the outer frame, the horizontal middle mullion and the vertical middle mullion are of broken bridge type profiles or integrally formed.

[0022] In the first aspect of the technical solution of the present utility model, an installation method of the above-mentioned door and window structure is provided, including:

[0023] Assemble the outer frame, the horizontal middle mullion and the vertical middle mullion according to a preset shape to divide the outer frame into multiple installation areas;

[0024] Obtain user requirements to determine the installation form of the door and window structure;

[0025] If the door and window structure is a casement window structure, locate the installation area corresponding to the casement frame and install the casement frame in this installation area so that the casement frame is respectively connected to the first connection part and the second connection part through opening hardware; then, install the casement window on the casement frame;

[0026] If the door and window structure is a sliding window structure, locate the installation area corresponding to the sliding frame and install the sliding frame in this installation area so that the outer wall of the sliding frame is respectively connected to the first connection part and the second connection part; then, install the sliding window on the sliding frame;

[0027] After the installation of the casement window or the sliding window is completed, install the fixed window in the remaining installation areas through glass press strips.

[0028] Preferably, when the user requirement changes from a casement window structure to a sliding window structure, remove the casement frame and replace it with the sliding frame;

[0029] When the user requirement changes from a sliding window structure to a casement window structure, remove the sliding frame and replace it with the casement frame.

[0030] Preferably, when the door and window structure is a sliding window structure, install decorative covers on the first casement connection part and the second casement connection part respectively;

[0031] Wherein, the first connection part includes a first casement connection part and a first sliding connection part, and the first sliding connection part is located on one side of the first casement connection part along the length direction of the outer frame;

[0032] The second connection part includes a second casement connection part and a second sliding connection part, and the second sliding connection part is located on one side of the second casement connection part along the length direction of the outer frame; wherein, the second casement connection part is adapted to the first casement connection part for installing a casement frame or a glass press strip; the second sliding connection part is adapted to the first sliding connection part for installing a sliding frame.

[0033] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0034] 1. In the embodiment of the present utility model, the outer frame, the horizontal middle stile and the vertical middle stile are all general structures. The casement frame and the sliding frame are respectively used for the installation of casement windows and sliding windows. Moreover, the first connecting part of the outer frame can be adapted to the second connecting part of the horizontal middle stile and the third connecting part of the vertical middle stile. Thus, when the outer frame is combined with the horizontal middle stile and the vertical middle stile, a casement window can be installed, and when the outer frame is only combined with the horizontal middle stile, a sliding window can be installed, so that the type conversion of the door and window structure can be realized at the lowest cost.

[0035] 2. In the embodiment of the present utility model, the outer frame, the horizontal middle stile and the vertical middle stile can be stocked in large quantities, avoiding the problem that in traditional materials, there are too many series or models, resulting in the inability to stock large quantities for each series, effectively reducing the stocking cost of dealers.

[0036] 3. The second sliding connecting part of the horizontal middle stile has different functions in different installation forms. In the casement window structure, this second sliding connecting part can be used as a reinforcing rib to improve the overall structural strength; in the sliding window structure, this second sliding connecting part can be used as the installation base of the sliding frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a schematic diagram of the overall structure of a door and window structure with switchable casement and sliding functions provided by an embodiment of the present utility model;

[0038] Figure 2A is a sectional view of the casement window structure in the A-A plane;

[0039] Figure 2B is a sectional view of the casement window structure in the B-B plane;

[0040] Figure 2C is a sectional view of the casement window structure in the C-C plane;

[0041] Figure 3A is a sectional view of the sliding window structure in the A-A plane;

[0042] Figure 3B is a sectional view of the sliding window structure in the B-B plane;

[0043] Figure 3C is a sectional view of the sliding window structure in the C-C plane;

[0044] Figure 4 is a schematic diagram of the sectional structure of the main frame;

[0045] Figure 5 is a schematic diagram of the sectional structure of the horizontal middle stile;

[0046] Figure 6 It is a schematic diagram of the cross-sectional structure of the vertical center stile;

[0047] Figure 7 A flow chart of a method for installing a switchable door and window structure that can be opened, pushed or pulled is provided in an embodiment of the utility model.

[0048] In the accompanying drawings, each reference numeral represents:

[0049] 1. outer frame; 11. first connection part; 110. installation area; 10. main frame; 101. first frame; 102. second frame; 103. sealing strip; 11. first connection part; 111. first casement connection part; 112. first push-pull connection part;

[0050] 2. horizontal middle stile; 21. second connection part; 211. second casement connection part; 212. second push-pull connection part;

[0051] 3. vertical middle stile; 31. third connecting part;

[0052] 4. Casement frame; 41. Hooking groove; 42. Casement window installation groove;

[0053] 5. Push-pull frame; 51. Annular slide; 52. Slideway;

[0054] 6. Glass pressing line; 7. Decorative cover; 8. Frame hook; 9. Sash hook;

[0055] 100, casement window; 200, sliding window; 201, roller; 300, fixed window; DETAILED DESCRIPTION

[0056] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0057] The core idea of ​​the embodiment of the utility model is: by making special structural design for the outer frame, horizontal stile and vertical stile of the door and window structure, the first connection part of the outer frame can be conformed to the second connection part of the horizontal stile and the third connection part of the vertical stile. Therefore, when the outer frame cooperates with the horizontal stile and the vertical stile, a casement window can be installed, and when the outer frame cooperates only with the horizontal stile, a sliding window can be installed. Therefore, the door and window structure can switch the installation form during installation.

[0058] In addition, it can be understood that, without loss of generality, the outer frame is a rectangular outer frame. Moreover, the number of horizontal center bars is always one, and the number of vertical center bars can be increased as the size of the door and window increases, and different window types can be realized (vertical center bars can be added to the upper and lower doors). If the size of the door and window is large, the number of vertical center bars required will be more, thereby dividing the rectangular outer frame into multiple installation areas; if the size of the door and window is small, the number of vertical center bars required will also be reduced, thereby dividing the rectangular outer frame into two or four installation areas. The following is only an example of setting a horizontal center bar and a vertical center bar in the outer frame to divide the outer frame into four installation areas, but it does not constitute a limitation of the present invention.

[0059] like Figures 1-6 As shown, a switchable door and window structure for sliding and opening is provided in an embodiment of the utility model, comprising an outer frame 1, a horizontal center stile 2, a vertical center stile 3, a horizontal opening frame 4, a sliding frame 5 and a glass pressing line 6. Among them, the outer frame 1 is rectangular in shape and has a first connecting portion 11. The horizontal center stile 2 is horizontally arranged in the outer frame 1, and the upper and lower sides of the horizontal center stile 2 both have a second connecting portion 21 that is conformed to the first connecting portion 11. The vertical center stile 3 is vertically arranged in the outer frame 1, and the left and right sides of the vertical center stile 3 both have a third connecting portion 31 that is conformed to the first connecting portion 11. As a result, the horizontal center stile 2 and the vertical center stile 3 jointly divide the outer frame 1 into four installation areas 110 (such as Figure 1 as shown).

[0060] like Figures 2A-2C As shown, when the door and window structure is a casement door and window structure, the casement frame 4 can be installed in one of the installation areas 110, so that the outer wall of the casement frame 4 is respectively connected to the first connection part 11, the second connection part 21 and the third connection part 31, so that the casement frame 4 can be used to install the casement window 100, and the glass pressing line 6 can be used to install the fixed window 300 in the remaining installation areas 110.

[0061] like Figures 3A-3C As shown, when the door and window structure is a sliding door and window structure, the sliding frame 5 can be installed in one of the installation areas 110, so that the outer wall of the sliding frame 5 is respectively connected to the first connecting part 11 and the second connecting part 21, so that the sliding window 200 can be installed using the sliding frame 5, and the fixed window 300 can be installed in the remaining installation areas 110 through the glass pressing line 6.

[0062] like Figure 1 and Figure 4 As shown, in this embodiment, the outer frame 1 is surrounded by four main frames 10 to form a rectangular shape, and the inner side of each main frame 10 has a first connecting portion 11. Figure 4As shown, the main frame 10 includes a first frame 101, a second frame 102 connected to the first frame 101, and a sealing strip 103 disposed between the first frame 101 and the second frame 102, thus forming a broken bridge structure (in other embodiments, the main frame 10 may also be integrally formed). The first connecting portion 11 is located inside the main frame 10 (i.e., Figure 4 below in

[0063] ). Specifically, the first connecting portion 11 includes a first casement connecting portion 111 and a first sliding connecting portion 112. The first sliding connecting portion 112 is located on one side of the first casement connecting portion 111 along the length direction of the main frame 10. Among them, the first casement connecting portion 111 is a hook groove structure for improving the installation stability of the casement frame 4 or the glass pressing strip 6. The first sliding connecting portion 112 is a flat structure for providing a flat installation base for the sliding frame 5 and ensuring the smooth movement of the sliding window 200.

[0063] As Figure 1 and Figure 5 shown, the horizontal middle stile 2 is installed in the middle of the outer frame 1 in the horizontal direction to be parallel to the main frames 10 above and below, and both the upper and lower sides of the horizontal middle stile 2 have second connecting portions 21. Among them, the second connecting portion 21 is adapted to the first connecting portion 11 for installing a casement frame, a glass pressing strip or a sliding frame. Specifically, as Figure 5 shown, the second connecting portion 21 includes a second casement connecting portion 211 and a second sliding connecting portion 212. The second sliding connecting portion 212 is located on one side of the second casement connecting portion 211 along the length direction of the horizontal middle stile 2. Among them, the second casement connecting portion 211 is adapted to the first casement connecting portion 111 (the same shape in this embodiment) for installing the casement frame 4 or the glass pressing strip 6 (as Figure 2B shown). Correspondingly, the second sliding connecting portion 212 is adapted to the first sliding connecting portion 112 for installing the sliding frame 5 (as Figure 3A shown).

[0064] As Figure 1 and Figure 6 shown, the vertical middle stile 3 is installed in the middle of the outer frame 1 in the vertical direction to be parallel to the main frames 10 on the left and right sides, and both the left and right sides of the vertical middle stile 3 have third connecting portions 31. Among them, the third connecting portion 31 is adapted to the first connecting portion 11 for installing a casement frame or a glass pressing strip. Specifically, as Figure 6 shown, the third connecting portion 31 is a third casement connecting portion, and the third casement connecting portion 31 is adapted to the first casement connecting portion 111 (the same shape in this embodiment) for installing the casement frame 4 or the glass pressing strip 6 (as Figure 2B shown).

[0065] Combined with Figure 2B and Figure 2CIt can be seen that the casement frame 4 is in a rectangular shape. A groove portion 41 that can be mutually hooked with the first casement connection portion 111 is formed on the outer side of the casement frame 4, and a casement window installation groove 42 is formed on the inner side of the casement frame 4. When installing the casement window structure, the groove portion 41 on the outer side of the casement frame 4 is respectively hooked with the first casement connection portion 111, the second casement connection portion 211, and the third casement connection portion 31; and, the top and bottom of the casement frame 4 are respectively connected to the first casement connection portion 111 and the second casement connection portion 211 through the opening hardware, and the side wall of the casement frame 4 is connected to the third casement connection portion 31 through the locking hardware, thereby completing the installation of the casement frame 4. After the casement frame 4 is installed, the casement window 100 can be installed through the casement window installation groove 42. The specific installation process of the casement window 100 is conventional technology in this field and will not be specifically described here.

[0066] Combined with Figure 3B and Figure 3C It can be seen that the sliding frame 5 is in a rectangular shape. The outer side of the sliding frame 5 is a plane, which is used to fit with the first sliding connection portion 112 and the second sliding connection portion 212, and then the sliding frame 5 can be installed and fixed. For example: it can be in the installation form of punching and matching bolts, or it can be the installation form of glue, which is not specifically limited here. And, an annular sliding groove 51 is formed on the inner side of the sliding frame 5 for installing and limiting the sliding window 200. In addition, a sliding track 52 is formed at the bottom of the sliding groove 51 to match with the roller 201 of the sliding window 200. Preferably, the diameter of the roller 201 is smaller than the sum of the depth of the annular sliding groove 51 and the depth of the sliding track 52, so that the roller 201 can be hidden in the sliding groove 51 to improve the overall aesthetics.

[0067] It can be understood that both the casement window structure and the sliding window structure apply the horizontal middle mullion 2, and the second sliding connection portion 212 of the horizontal middle mullion 2 has different functions in different installation forms. Specifically, in the casement window structure, the second sliding connection portion 212 can be used as a reinforcing rib to improve the overall structural strength; in the sliding window structure, the second sliding connection portion 212 can be used as the installation basis of the sliding frame 5.

[0068] As Figure 3B and Figure 3C shown, in the above embodiment, preferably, when the window and door structure is a sliding window structure, decorative covers 7 are installed on both the first casement connection portion 111 and the second casement connection portion 211. Thus, the use of the decorative covers 7 can prevent the grooved structure from being exposed outside, thereby improving the overall aesthetics.

[0069] As Figure 3CAs shown, in the above embodiment, preferably, when the door and window structure is a sliding door and window structure, within the installation area of the sliding frame 5, a frame hook stile 8 is installed on the third casement connecting part 31, and a sash hook stile 9 is installed at the position corresponding to the frame hook stile on the sliding frame 5. When the sliding window 200 slides, the sash hook stile 9 is hooked or separated from the frame hook stile 8 as the sliding frame 200 translates.

[0070] In the above embodiment, preferably, the outer frame 1, the horizontal middle stile 2, and the vertical middle stile 3 are all bridge-type profiles. In other embodiments, the outer frame 1, the horizontal middle stile 2, and the vertical middle stile 3 can all be integrally formed or partially integrally formed, and specific selection can be made adaptively according to actual needs.

[0071] As Figure 7 shown, based on the above embodiment, the embodiment of the present invention further provides an installation method for the above door and window structure, specifically including steps S1 - S5:

[0072] S1: Outer frame assembly.

[0073] Specifically, according to the shape of the area to be installed, the outer frame 1, the horizontal middle stile 2, and the vertical middle stile 3 are assembled in a preset shape to divide the outer frame 1 into multiple installation areas 110.

[0074] S2: Obtain user requirements to determine the type of the door and window structure.

[0075] Specifically, the type of this door and window structure is one of the casement type or the sliding type, and the user can select according to needs.

[0076] S3: Install the casement window 100.

[0077] If the user selects the casement type, the installation of the casement window 100 is completed through the following steps.

[0078] S31: Locate the installation area 110 corresponding to the casement frame 4;

[0079] S32: Install the casement frame 4 within this installation area 110 so that the hook grooves 41 on the outer sides of the casement frame 4 are respectively hooked to the first casement connecting part 111, the second casement connecting part 211, and the third casement connecting part 31, thereby completing the installation of the casement frame 4;

[0080] S33: Install the casement window 100 on the casement frame 4.

[0081] S4: Install the sliding window 200.

[0082] If the user selects the sliding type, the installation of the sliding window 200 is completed through the following steps.

[0083] S41: Locate the installation area corresponding to the sliding frame

[0084] S42: Install the push-pull frame 5 in the installation area 110 so that the outer plane of the push-pull frame 5 fits with the first push-pull connection part 112 and the second push-pull connection part 212, and then the push-pull frame 5 can be installed and fixed by bolts or adhesive;

[0085] S43: Install the sliding window 200 on the sliding frame 5;

[0086] S44: Install the decorative cover 7 on the first casement connection part 111 and the second casement connection part 211 respectively.

[0087] It can be understood that step S3 and step S4 are determined according to step S2, and the installation steps are different if the user needs are different.

[0088] S5: Install the fixed window 300.

[0089] Specifically, after the installation of the casement window 100 or the sliding window 200 is completed based on step S3 or step S4 , the fixed window 300 can be installed in the remaining installation area 110 through the glass pressing line 6 .

[0090] In addition, in the above embodiment, when the user needs to change from a casement door and window structure to a sliding door and window structure, the casement frame 4 can be removed midway and replaced with a sliding frame 5, thereby realizing the installation of the sliding window 200. Similarly, when the user needs to change from a sliding door and window structure to a casement door and window structure, the sliding frame 5 can be removed and replaced with a casement frame 4, thereby realizing the installation of the casement window 100.

[0091] It can be understood that in this embodiment, since both the casement frame 4 and the sliding frame 5 are detachable and can be matched with the outer frame 1, the horizontal center mullion 2 and the vertical center mullion 3, the conversion of the door and window structure can be achieved without ordering additional parts.

[0092] In summary, the embodiment of the utility model provides a switchable door and window structure and installation method, which has the following beneficial effects:

[0093] 1. In the embodiment of the utility model, the outer frame 1, the horizontal muntin 2 and the vertical muntin 3 are common structures, and the casement frame 4 and the sliding frame 5 are used for installing the casement window 100 and the sliding window 200 respectively; and the first connection portion 11 of the outer frame 1 can be conformed to the second connection portion 21 of the horizontal muntin and the third connection portion 31 of the vertical muntin. Therefore, when the outer frame 1 cooperates with the horizontal muntin 2 and the vertical muntin 3, the casement window 100 can be installed, and when the outer frame 1 cooperates only with the horizontal muntin 2, the sliding window 200 can be installed, so that the type conversion of the door and window structure can be achieved at the minimum cost.

[0094] 2. In the embodiments of the present utility model, the outer frame 1, the horizontal middle stile 2 and the vertical middle stile 3 can be stocked in large quantities, avoiding the problem that in traditional materials, there are too many series or models, resulting in the inability to stock each series in large quantities, and effectively reducing the stocking cost of the dealer.

[0095] 3. The second push-pull connection part 212 of the horizontal middle stile 2 has different functions in different installation forms. In the structure of a casement window, this second push-pull connection part 212 can be used as a reinforcing rib to improve the overall structural strength; in the structure of a sliding window, this second push-pull connection part 212 can be used as the installation base of the sliding frame 5.

[0096] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0097] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0098] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claimed rights.

Claims

1. A door and window structure that can be switched between horizontal opening and sliding, characterized in that: include: An outer frame, wherein a first connecting portion is provided on an inner side of the outer frame; A horizontal middle stile, which is installed in the middle of the outer frame in the horizontal direction, and has a second connecting portion on both the upper and lower sides of the horizontal middle stile; wherein the second connecting portion is parallel to the first connecting portion, so as to be used for installing a casement frame, a glass pressing line or a sliding frame; at least one vertical middle stile, the vertical middle stile being installed on the outer frame in a vertical direction, so as to divide the outer frame into a plurality of installation areas by the horizontal middle stile and the at least one vertical middle stile; A casement frame is detachably mounted in any of the mounting areas, and the casement frame is correspondingly connected to the first connection portion and the second connection portion through opening hardware; A push-pull frame is detachably mounted in any of the mounting areas, and the outer wall of the push-pull frame is respectively connected to the first connection portion and the second connection portion; Wherein, the casement frame and the sliding frame are selectively installed to form a casement door and window structure when the casement frame is installed, or to form a sliding door and window structure when the sliding frame is installed.

2. The door and window structure according to claim 1, characterized in that: The first connection portion includes a first flat opening connection portion and a first push-pull connection portion, wherein the first push-pull connection portion is located at one side of the first flat opening connection portion along the length direction of the outer frame; The second connection portion includes a second casement connection portion and a second sliding connection portion, and the second sliding connection portion is located on one side of the second casement connection portion along the length direction of the horizontal center bar; wherein the second casement connection portion is conformed to the first casement connection portion for installing a casement frame or a glass pressure line; the second sliding connection portion is conformed to the first sliding connection portion for installing a sliding frame.

3. The door and window structure according to claim 1, characterized in that: The left and right sides of the vertical center stile are each provided with a third connection portion, wherein the third connection portion is conformable to the side wall of the casement frame for installing locking hardware.

4. The door and window structure according to claim 2, characterized in that: When the door and window structure is a casement door and window structure, the casement frame is installed in at least one of the installation areas, and the casement window is installed on the casement frame; and fixed windows are installed in the remaining installation areas through glass pressure lines.

5. The door and window structure according to claim 2, characterized in that: When the door and window structure is a sliding door and window structure, the sliding frame is installed in at least one of the installation areas, and the sliding window is installed on the sliding frame; fixed windows are installed in the remaining installation areas through glass pressing lines.

6. The door and window structure according to claim 3, characterized in that: In the installation area of ​​the push-pull frame, a frame hook is installed on the third connection portion, and a sash hook is installed at a position on the push-pull frame corresponding to the frame hook; Wherein, the fan hook is connected to or separated from the frame hook as the push-pull frame moves horizontally.

7. The door and window structure according to claim 1, characterized in that: The outer frame, the horizontal center stile and the vertical center stile are broken bridge type profiles or are integrally formed.

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