Connecting structure and hinge structure for doors and windows

Abstract

The invention discloses a connecting structure and a hinge structure for doors and windows. The connecting structure comprises a window sash fixing plate, a connecting rod part, a first connecting piece and a second connecting piece. Wherein the window sash fixing plates are mounted on window sashes respectively, and first connecting holes are formed in the window sash fixing plates; the connecting rod part is arranged on the side, away from the window sash, of the window sash fixing plate, and a second connecting hole is formed in the position, corresponding to the first connecting hole, of the connecting rod part. The first connecting piece is arranged in the first connecting hole and the second connecting hole in a penetrating mode so that the window sash fixing plate can be hinged to the connecting rod part. A center hole is formed in the center of the first connecting piece; the second connecting piece is arranged in the center hole in a penetrating mode and enables the window sash fixing plate and the window sash to be fixedly connected. By means of the connecting structure, the window sash fixing plate can be hinged to the connecting rod part through the first connecting piece. Moreover, through the mutual matching of the first connecting piece and the second connecting piece, the fixed connection of the window sash fixing plate and the window sash is realized, and a screw hole does not need to be additionally formed in the window sash fixing plate.

Description

Technical Field

[0001] The invention relates to the technical field of door and window hardware, and in particular to a connection structure and a hinge structure for doors and windows. Background Art

[0002] Existing friction hinges for doors and windows usually include a mounting plate, a long support arm, a short support arm, a window mounting arm and a slider that are hinged to each other. The structure is relatively simple and the installation is relatively convenient.

[0003] However, if Figure 1 As shown, the existing friction hinge structure generally has multiple through holes on the mounting plate for fixing the mounting plate to the frame by screws, which results in multiple through holes on the hinge mounting plate and reduces the overall strength of the base plate. At the same time, a section of the mounting plate is provided with a riveted point with other support arms, so that the fixing screws cannot be set close to the hinge side sash angle. When the sash is subjected to a certain wind pressure, the sash angle hits the window frame and deforms, causing a greater safety hazard. Summary of the invention

[0004] The primary technical problem to be solved by the present invention is to provide a connection structure for doors and windows.

[0005] Another technical problem to be solved by the present invention is to provide a hinge structure for doors and windows.

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

[0007] According to a first aspect of the present technical solution, a connection structure for doors and windows is provided, comprising:

[0008] A window sash fixing plate is fixed on the window sash, and a first connecting hole is formed on the window sash fixing plate;

[0009] A connecting rod portion is arranged on a side of the window sash fixing plate away from the window sash, and a second connecting hole is opened at a position of the connecting rod portion corresponding to the first connecting hole;

[0010] A first connecting member is inserted through the first connecting hole and the second connecting hole to hinge the window sash fixing plate with the connecting rod portion; and a center hole is provided at the center of the first connecting member;

[0011] The second connecting member is passed through the central hole and fixedly connects the window sash fixing plate to the window sash.

[0012] Preferably, the center hole is a threaded hole, the second connecting member is a screw, the screw is threadedly connected to the threaded hole, and one end of the screw is screwed into the window sash.

[0013] Preferably, the central hole is a through hole, and the second connecting member is a self-tapping screw, and the self-tapping screw passes through the through hole and self-taps into the window sash.

[0014] According to a second aspect of the present technical solution, a hinge structure using the above-mentioned connection structure is provided, comprising:

[0015] A window frame fixing plate, installed on the window frame;

[0016] A window sash fixing plate is fixed on the window sash and is located on one side of the window frame fixing plate. A first connecting hole is formed on one end of the window sash fixing plate close to the window frame fixing plate.

[0017] A connecting rod assembly is connected between the window frame fixing plate and the window sash fixing plate, so that the window sash fixing plate can rotate around the window frame fixing plate to open or close the window sash; and the connecting rod assembly includes the connecting rod portion;

[0018] A first connecting member is inserted through the first connecting hole and the second connecting hole to hinge the window sash fixing plate with the connecting rod portion; and a center hole is provided at the center of the first connecting member;

[0019] The second connecting member is passed through the central hole and fixedly connects the window sash fixing plate to the window sash.

[0020] Preferably, the connecting rod assembly comprises:

[0021] A connecting rod portion, one end of which is hinged to the window frame fixing plate, and the other end of which is hinged to an end of the window sash fixing plate close to the window frame fixing plate through the first connecting member;

[0022] A first connecting rod, one end of which is slidably connected to the window frame fixing plate, and the other end of which is hinged to the window sash fixing plate;

[0023] The second connecting rod has one end hinged to the window sash fixing plate, and the other end hinged to the middle part of the first connecting rod.

[0024] Preferably, the connecting rod assembly comprises:

[0025] A connecting rod portion, one end of which is hinged to the window frame fixing plate, and the other end of which is hinged to the window sash fixing plate through the first connecting member;

[0026] A first connecting rod, one end of which is slidably connected to the window frame fixing plate, and the other end of which is hinged to the window sash fixing plate;

[0027] The second connecting rod has one end slidably connected to the window frame fixing plate and the other end hinged to the middle part of the connecting rod part.

[0028] Preferably, the connecting rod assembly comprises:

[0029] A connecting rod portion, one end of which is slidably connected to the window frame fixing plate, and the other end of which is hinged to the window sash fixing plate through the first connecting member;

[0030] A first connecting rod, one end of which is hinged to the window frame fixing plate, and the other end of which is hinged to the window sash fixing plate;

[0031] The second connecting rod has one end slidably connected to the window frame fixing plate and the other end hinged to the middle part of the first connecting rod.

[0032] Preferably, the window sash fixing plate is provided with a limiting column, and a limiting portion is provided at the middle of the connecting rod portion;

[0033] When the window sash fixing plate is rotated by a preset angle relative to the window frame fixing plate, the limiting column abuts against the limiting portion to limit the rotation of the window sash fixing plate.

[0034] Preferably, it further comprises a sealing member, which is arranged at the end of the window sash fixing plate, and the sealing member is fixedly connected to the window sash fixing plate through the limiting column;

[0035] An end of the sealing member away from the first connecting member forms an abutment tip with a preset shape, and the abutment tip is used to cooperate with the end corner of the window frame fixing plate.

[0036] Preferably, the window sash fixing plate is provided with a fixing hole, and the fixing hole is fixedly connected to the window sash via a fixing piece.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] The connection structure for doors and windows of the technical solution of the present invention, on the one hand, realizes the mutual hinge connection between the window sash fixing plate and the connecting rod assembly by driving the rivet itself to form a stable hinge structure, so that the fixing position of the hinge and the window is close to the hinge side, and when resisting wind pressure, it can provide wind pressure resistance for the window sash. On the other hand, through the mutual cooperation of the first connecting member and the second connecting member, the fixed connection between the window sash fixing plate and the window sash is realized, so that there is no need to add additional screw holes on the window sash fixing plate, avoiding the reduction of strength caused by reducing materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the prior art;

[0040] Figure 2A A schematic structural diagram of a connection structure for doors and windows provided in a first embodiment of the present invention;

[0041] Figure 2B It is a schematic structural diagram of another first connecting member and a second connecting member in the first embodiment of the present invention;

[0042] Figure 3 A schematic structural diagram of a hinge structure for doors and windows provided in accordance with a second embodiment of the present invention;

[0043] Figure 4 A schematic structural diagram of a hinge structure for doors and windows provided in a third embodiment of the present invention;

[0044] Figure 5 It is a schematic diagram of the combined structure of the sealing member and the connecting rod portion in the third embodiment of the present invention;

[0045] Figure 6 A schematic structural diagram of a hinge structure for doors and windows provided in a fourth embodiment of the present invention;

[0046] Figure 7 A schematic structural diagram of a hinge structure for doors and windows provided in a fifth embodiment of the present invention;

[0047] Figure 8 This is a schematic structural diagram of a door and window provided in the sixth embodiment of the present invention.

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

[0049] 1. Window frame fixing plate; 11. Sliding block; 12. Fixing block; 13. End angle wrap;

[0050] 2. Window sash fixing plate; 21. First connecting hole; 22. Limiting column; 221. Thick diameter section; 222. Thin diameter section; 23. Fixing hole; 24. Fixing piece;

[0051] 3. Connecting rod assembly; 31. Connecting rod portion; 32. First connecting rod; 33. Second connecting rod; 311. Second connecting hole; 312. Position limiting portion; 34. Sealing member; 341. Third connecting hole; 342. Fourth connecting hole; 343. Abutting top end;

[0052] 4. first connecting member; 41. center hole;

[0053] 5. Second connecting piece;

[0054] 100. Doors and windows; 10. Window frames; 20. Window sashes; 30. Hinge structure. DETAILED DESCRIPTION

[0055] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0056] First embodiment;

[0057] like Figure 2A As shown, a connection structure for doors and windows provided in the first embodiment of the present invention includes a window sash fixing plate 2, a connecting rod portion 31, a first connecting member 4 and a second connecting member 5.

[0058] Specifically, in this embodiment, the window sash fixing plate 2 is installed at the bottom of the window sash, and a first connecting hole 21 is opened on the window sash fixing plate 2. The connecting rod portion 31 is arranged on the side of the window sash fixing plate 2 away from the window sash (ie: Figure 2A ), and a second connection hole 311 is provided at a position on the connecting rod portion 31 corresponding to the first connection hole 21. The first connecting member 4 is inserted into the first connection hole 21 and the second connection hole 311 to hinge the window sash fixing plate 2 and the connecting rod portion 31. In addition, the center of the first connecting member 4 has a center hole 41, and the second connecting member 5 is inserted into the center hole 41, so as to fix the window sash fixing plate 2 and the window sash.

[0059] like Figure 2A As shown, in the above embodiment, the center hole 41 is a threaded hole, and correspondingly, the second connecting member 5 is a screw. The screw 5 is threadedly connected to the threaded hole 41, and one end of the screw 5 is screwed into the window sash. Figure 2B As shown, in another embodiment, the center hole 41 is a through hole, and correspondingly, the second connecting member 5 is a self-tapping screw, which passes through the through hole 41 and self-taps into the window sash. The above two structural forms are only two preferred implementations, but do not constitute a limitation of the present invention. The user can make adaptive adjustments to the specific connection structure as needed, and it only needs to meet the hinge requirements and the fixed connection requirements of the window sash fixing plate 2 and the window sash at the same time.

[0060] It is understandable that, by using this connection structure, on the one hand, the window sash fixing plate 2 and the connecting rod portion 31 can be hinged through the first connecting member 4 itself to form a stable hinge structure. In addition, through the mutual cooperation of the first connecting member 4 and the second connecting member 5, the window sash fixing plate and the window sash are fixedly connected, so that there is no need to add additional screw holes on the window sash fixing plate, thereby avoiding the reduction in strength caused by reducing the material.

[0061] Second embodiment:

[0062] like Figure 3As shown, a hinge structure for doors and windows provided by the second embodiment of the present invention includes a window frame fixing plate 1, a window sash fixing plate 2, a connecting rod assembly 3, a first connecting member 4 and a second connecting member 5. The window frame fixing plate 1 and the window sash fixing plate 2 are respectively installed on the window frame and the window sash, and the connecting rod assembly 3 is connected between the window frame fixing plate 1 and the window sash fixing plate 2 so that the window sash fixing plate 2 can rotate relative to the window frame fixing plate 1. The first connecting member 4 is connected between the window sash fixing plate 2 and the connecting rod assembly 3 to realize the mutual hinge connection between the window sash fixing plate 2 and the connecting rod assembly 3 to form a stable hinge structure. The second connecting member 5 is connected to the first connecting member 4 to cooperate with the first connecting member 4 to realize the fixed connection between the window sash fixing plate 2 and the window sash.

[0063] like Figure 3 As shown, in the above embodiment, the window frame fixing plate 1 is installed on the window frame and is roughly in a rectangular plate structure. The window frame fixing plate 1 is slidably matched with a slider 11, and the window frame fixing plate 1 is also provided with a fixing block 12; the fixing block 12 and the slider 11 are spaced apart in the length direction of the window frame fixing plate 1.

[0064] like Figure 3 As shown, in the above embodiment, the window sash fixing plate 2 is fixed on the window sash and is located on one side of the window frame fixing plate 1. The window sash fixing plate 2 is generally a rectangular plate structure, and a first connecting hole 21 is provided at one end of the window sash fixing plate 2 close to the window frame fixing plate for hinged connection with the connecting rod assembly 3.

[0065] like Figure 3 As shown, in the above embodiment, the connecting rod assembly 3 is connected between the window frame fixing plate 1 and the window sash fixing plate 2, so that the window sash fixing plate 2 can rotate around the window frame fixing plate 1. Specifically, in this embodiment, the connecting rod assembly 3 includes a connecting rod portion 31, a first connecting rod 32 and a second connecting rod 33. Among them, one end of the connecting rod portion 31 (i.e. Figure 3 The left end of the middle part) is hinged to the fixed block 12, and the other end (i.e. Figure 3 A second connecting hole 311 is provided on the right end of the connecting rod 31, and the second connecting hole 311 corresponds to the first connecting hole 21, so that the first connecting member 4 can be inserted into the first connecting hole 21 and the second connecting hole 311, thereby hingedly connecting the window sash fixing plate 2 to the right end of the connecting rod 31. One end of the first connecting rod 32 (i.e. Figure 3 The left end of the slider 11 is hinged to the slider 11, and the other end (i.e. Figure 3 The right end of the second connecting rod 33 is hinged to the middle of the window sash fixing plate 2. Figure 3 The left end of the middle part) is hinged to the fixed block 12, and the other end (i.e. Figure 3 The right end in the middle of the first connecting rod 32 is hinged. Thus, the connecting rod assembly 3 formed by the three-link structure is used to realize the transmission connection between the window frame fixing plate 1 and the window sash fixing plate 2.

[0066] As shown in FIG. 2 , in the above embodiment, the first connecting member 4 is inserted into the first connecting hole 21 and the second connecting hole 311 to hinge the window sash fixing plate 2 with the connecting rod assembly 3. In addition, the center of the first connecting member 4 has a center hole 41, and accordingly, the second connecting member 5 is connected to the center hole 41 of the first connecting member 4, and one end of the second connecting member 5 protrudes out of the center hole 41 to be fixedly connected with the window sash. Thus, on the one hand, the window sash fixing plate 2 and the connecting rod assembly 3 are mutually hinged by the first connecting member 4 itself to form a stable hinge structure, so that the fixed position of the hinge and the window is close to the hinge side, and the window sash can be provided with wind pressure resistance performance when resisting wind pressure. On the other hand, the fixed connection between the window sash fixing plate 2 and the window sash is realized by the mutual cooperation of the first connecting member 4 and the second connecting member 5, so that there is no need to add additional screw holes on the window sash fixing plate 2, and the strength reduction caused by material reduction is avoided.

[0067] In the above embodiment, preferably, the first connection hole 21 is a strip hole, which is arranged along the length direction of the window sash fixing plate 2 to adjust the installation position of the window sash fixing plate 2 and the connecting rod assembly 3 within a preset range. It can be understood that by setting the first connection hole 21 as a strip hole, the installation position of the window sash can be adaptively adjusted according to different installation scenarios during actual installation, thereby improving the convenience of window sash installation.

[0068] like Figure 3 As shown, in the above embodiment, preferably, the window sash fixing plate 2 is provided with a limiting column 22, and correspondingly, a limiting portion 312 (i.e., a protruding portion in the middle of the connecting rod portion 31) is provided in the middle of the connecting rod portion 31. When the window sash fixing plate 2 rotates relative to the window frame fixing plate 1 by a preset angle, the limiting column 22 abuts against the limiting portion 312 to limit the rotation of the window sash fixing plate 2. Specifically, in this embodiment, the limiting column 22 includes a thick diameter section 221 and a thin diameter section 222, wherein the thick diameter section 221 is used to abut against the limiting portion 312, and the thin diameter section 222 is fixed to the window sash fixing plate 2.

[0069] In addition, if Figure 1 As shown, in the above embodiment, preferably, the window sash fixing plate 2 is provided with a fixing hole 23, and the fixing hole 23 is fixedly connected to the window sash through a fixing member 24, thereby improving the installation stability of the window sash fixing plate 2.

[0070] Third embodiment:

[0071] like Figure 4 and Figure 5As shown, based on the above second embodiment, the third embodiment of the present invention provides another hinge structure for doors and windows, including a window frame fixing plate 1, a window sash fixing plate 2, a connecting rod assembly 3, a first connecting member 4 and a second connecting member 5. Compared with the second embodiment, the difference of this embodiment is that the structure of the connecting rod assembly 3 is different.

[0072] Specifically, in this embodiment, the connecting rod assembly 3 includes not only the connecting rod portion 31, the first connecting rod 32 and the second connecting rod 33 in the first embodiment, but also a sealing member 34. The sealing member 34 is disposed between the connecting rod portion 31 and the window sash fixing plate 2, and a third connecting hole 341 is provided at a position corresponding to the second connecting hole 311 on the sealing member 34, and the second connecting member 5 passes through the second connecting hole 311 and the third connecting hole 341 in sequence, and is connected and fixed to the first connecting member 4. In addition, a fourth connecting hole 342 is provided in the middle of the sealing member 34, and the thick-diameter section 221 of the limiting column 22 is passed through the fourth connecting hole 342, so as to position and install the sealing member 34.

[0073] Moreover, in the present embodiment, the end of the sealing member 34 away from the first connecting member 4 forms a tip end 343 of a preset shape for cooperating with the end corner 13 of the window frame fixing plate 1, thereby guiding and sealing the closing of the window sash and improving the sealing effect of the window sash.

[0074] Except for the above differences, the rest of the structure of this embodiment is the same as that of the second embodiment and will not be described again.

[0075] Fourth embodiment:

[0076] like Figure 6 As shown, the fourth embodiment of the present invention provides another hinge structure for doors and windows, including a window frame fixing plate 1, a window sash fixing plate 2, a connecting rod assembly 3, a first connecting member 4 and a second connecting member 5. Compared with the second embodiment, the difference of this embodiment is that the connection form of the connecting rod assembly 3 is different.

[0077] Specifically, in this embodiment, the window frame fixing plate 1 is provided with a slider 11 and a fixing block 12. The slider 11 can be telescopically moved along the length direction of the window frame fixing plate 1, and the fixing block 12 is fixed to the surface of the window frame fixing plate 1.

[0078] The connecting rod assembly 3 includes a connecting rod portion 31, a first connecting rod 32 and a second connecting rod 33. Figure 6 The right end of the window frame is hinged to the fixing block 12 of the window frame fixing plate 1, and the other end (i.e. Figure 6 The left end of the first connecting rod 32 is hinged to the window sash fixing plate 2 through the first connecting member 4. Figure 6 The right end of the window frame is hinged to the slider 11 of the window frame fixing plate 1, and the other end (i.e. Figure 6 The left end of the second connecting rod 33 is hinged to the window sash fixing plate 2. Figure 6 The right end of the window frame is hinged to the slider 11 of the window frame fixing plate 1, and the other end (i.e. Figure 6 The left end in the middle is hinged to the middle part of the connecting rod part 31.

[0079] It can be understood that, compared with the second embodiment, due to the different connection form of the connecting rod assembly 3, the movement forms of the connecting rod portion 31, the first connecting rod 32 and the second connecting rod 33 are different during the opening and closing process of the window sash.

[0080] In addition to the above-mentioned distinguishing features, the specific structures of the window frame fixing plate 1, the window sash fixing plate 2, the first connecting member 4 and the second connecting member 5 are the same as those of the second embodiment and will not be described herein.

[0081] Fifth embodiment:

[0082] like Figure 7 As shown, the fifth embodiment of the present invention provides another hinge structure for doors and windows, including a window frame fixing plate 1, a window sash fixing plate 2, a connecting rod assembly 3, a first connecting member 4 and a second connecting member 5. Compared with the second embodiment, the difference of this embodiment is that the connection form of the connecting rod assembly 3 is different.

[0083] Specifically, in this embodiment, the window frame fixing plate 1 is provided with a slider 11 and a fixing block 12. The slider 11 can be telescopically moved along the length direction of the window frame fixing plate 1, and the fixing block 12 is fixed to the surface of the window frame fixing plate 1.

[0084] The connecting rod assembly 3 includes a connecting rod portion 31, a first connecting rod 32 and a second connecting rod 33. One end of the connecting rod portion 31 (i.e. Figure 7 The left end of the window frame is hinged to the slider 11 of the window frame fixing plate 1, and the other end (i.e. Figure 7 The right end of the first connecting rod 32 is hinged to the window sash fixing plate 2 through the first connecting member 4. Figure 7 The left end of the window frame is hinged to the fixing block 12 of the window frame fixing plate 1, and the other end (i.e. Figure 7 The right end of the second connecting rod 33 is hinged to the window sash fixing plate 2. Figure 7 The left end of the window frame is hinged to the slider 11 of the window frame fixing plate 1, and the other end (i.e. Figure 7 The right end in the middle is hinged to the middle part of the first connecting rod 32.

[0085] It can be understood that, compared with the second embodiment, due to the different connection form of the connecting rod assembly 3, the movement forms of the connecting rod portion 31, the first connecting rod 32 and the second connecting rod 33 are different during the opening and closing process of the window sash.

[0086] In addition to the above-mentioned distinguishing features, the specific structures of the window frame fixing plate 1, the window sash fixing plate 2, the first connecting member 4 and the second connecting member 5 are the same as those of the second embodiment and will not be described herein.

[0087] Sixth embodiment:

[0088] like Figure 8 As shown, the sixth embodiment of the present invention further provides a door and window 100, comprising a window frame 10, a window sash 20 and a hinge structure 30 as described in any one of the second to fifth embodiments.

[0089] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0090] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying 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 the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0091] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A connection structure for doors and windows, characterized in that: include: A window sash fixing plate is fixed on the window sash, and a first connecting hole is formed on the window sash fixing plate; A connecting rod portion is arranged on a side of the window sash fixing plate away from the window sash, and a second connecting hole is opened at a position of the connecting rod portion corresponding to the first connecting hole; A first connecting member is inserted through the first connecting hole and the second connecting hole to hinge the window sash fixing plate with the connecting rod portion; and a center hole is provided at the center of the first connecting member; The second connecting member is passed through the central hole and fixedly connects the window sash fixing plate to the window sash.

2. The connection structure according to claim 1, characterized in that: The central hole is a threaded hole, the second connecting member is a screw, the screw is threadedly connected to the threaded hole, and one end of the screw is screwed into the window sash.

3. The connection structure according to claim 1, characterized in that: The central hole is a through hole, and the second connecting member is a self-tapping screw. The self-tapping screw passes through the through hole and self-taps into the window sash.

4. A hinge structure using the connection structure as claimed in any one of claims 1 to 3, characterized in that: include: A window frame fixing plate, installed on the window frame; A window sash fixing plate is fixed on the window sash and is located on one side of the window frame fixing plate. A first connecting hole is formed on one end of the window sash fixing plate close to the window frame fixing plate. A connecting rod assembly is connected between the window frame fixing plate and the window sash fixing plate, so that the window sash fixing plate can rotate around the window frame fixing plate to open or close the window sash; and the connecting rod assembly includes the connecting rod portion; A first connecting member is inserted through the first connecting hole and the second connecting hole to hinge the window sash fixing plate with the connecting rod portion; and a center hole is provided at the center of the first connecting member; The second connecting member is passed through the central hole and fixedly connects the window sash fixing plate to the window sash.

5. The hinge structure according to claim 4, characterized in that: The connecting rod assembly comprises: A connecting rod portion, one end of which is hinged to the window frame fixing plate, and the other end of which is hinged to an end of the window sash fixing plate close to the window frame fixing plate through the first connecting member; A first connecting rod, one end of which is slidably connected to the window frame fixing plate, and the other end of which is hinged to the window sash fixing plate; The second connecting rod has one end hinged to the window sash fixing plate, and the other end hinged to the middle part of the first connecting rod.

6. The hinge structure according to claim 4, characterized in that: The connecting rod assembly comprises: A connecting rod portion, one end of which is hinged to the window frame fixing plate, and the other end of which is hinged to the window sash fixing plate through the first connecting member; A first connecting rod, one end of which is slidably connected to the window frame fixing plate, and the other end of which is hinged to the window sash fixing plate; The second connecting rod has one end slidably connected to the window frame fixing plate and the other end hinged to the middle part of the connecting rod part.

7. The hinge structure according to claim 4, characterized in that: The connecting rod assembly comprises: A connecting rod portion, one end of which is slidably connected to the window frame fixing plate, and the other end of which is hinged to the window sash fixing plate through the first connecting member; A first connecting rod, one end of which is hinged to the window frame fixing plate, and the other end of which is hinged to the window sash fixing plate; The second connecting rod has one end slidably connected to the window frame fixing plate and the other end hinged to the middle part of the first connecting rod.

8. The hinge structure according to claim 5, characterized in that: The window sash fixing plate is provided with a limiting column, and the middle part of the connecting rod part is provided with a limiting part; When the window sash fixing plate is rotated by a preset angle relative to the window frame fixing plate, the limiting column abuts against the limiting portion to limit the rotation of the window sash fixing plate.

9. The hinge structure according to claim 8, characterized in that: It also includes a sealing member, which is arranged at the end of the window sash fixing plate, and the sealing member is fixedly connected to the window sash fixing plate through the limiting column; An end of the sealing member away from the first connecting member forms an abutment tip with a preset shape, and the abutment tip is used to cooperate with the end corner of the window frame fixing plate.

10. The hinge structure according to claim 5, characterized in that: The window sash fixing plate is provided with a fixing hole, and the fixing hole is fixedly connected to the window sash via a fixing piece.

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