Sliding window hinge structure capable of being adjusted up and down

Abstract

The invention relates to a sliding window hinge structure capable of being adjusted up and down. The sliding window hinge structure comprises a first fixing plate used for being fixed to a window frame. The second fixing plate is used for being fixed on a window sash; the device is characterized by further comprising a second short rod, one end of the second short rod is hinged to the first fixing plate through a fifth hinge shaft, the other end of the second short rod is hinged to the second fixing plate through an adjusting piece, the adjusting piece is provided with a threaded shaft section and an optical shaft section located above the threaded shaft section, and an adjusting threaded hole is formed in the second short rod. The threaded shaft section of the adjusting part is connected into the adjusting threaded hole in a threaded mode, the optical shaft section penetrates through the second fixing plate and is axially limited to the second fixing plate, and the second fixing plate can rotate around the central axis of the optical shaft section and can axially move along with the adjusting part. The sliding window hinge structure capable of being adjusted up and down is reasonable in structure and capable of adjusting the up-down position of the window sash.

Description

Technical Field

[0001] The invention belongs to the technical field of building decoration, and in particular relates to a window hinge structure which can be adjusted up and down and is used for a window. Background Art

[0002] In order to make full use of the balcony, the balcony is usually enclosed. There are two types of windows for enclosing the balcony: sliding windows and push windows. Push windows require push window hinges, which are installed between the window sash and the window frame (between the top surface of the window sash and the inner top surface of the window frame, and between the bottom surface of the window sash and the inner bottom surface of the window frame).

[0003] For example, the Chinese utility model patent "Improved Sliding Window" with patent number ZL01270603.5 (publication number CN2512878Y) discloses a sliding window hinge structure, including a bottom frame, a top frame and a connecting rod part, the bottom frame and the top frame are respectively provided with upper and lower sliding grooves; movable sliders are respectively provided in the upper and lower sliding grooves, the connecting rod part is respectively arranged on the top frame and the bottom frame, the connecting rod part is composed of a fixed rod and a connecting rod, one end of the connecting rod is pivoted at an appropriate position of the fixed rod, and the other end of the connecting rod is pivotally fixed to one end of the upper and lower sliding grooves; the fixed rod is fixed to the window part, and one end of the fixed rod is fixed to the slider.

[0004] For example, a Chinese utility model patent "Opening and Closing Control Device for Sliding Windows for Buildings" with patent number ZL201520575858.X (publication number CN204920547U) discloses a sliding window hinge structure, including a fixed rod, a pushing rod, a connecting rod assembly, a sliding member and a clamping member, wherein the fixed rod is fixedly arranged on a window frame, and rails are respectively arranged on both sides of the fixed rod, and the rails on both sides are provided with at least a first relative clamping opening; the pushing rod is fixedly arranged on the window body; the connecting rod assembly is provided with a first connecting rod and a second connecting rod spaced apart from the first connecting rod, and the first connecting rod and the second connecting rod are respectively pivotally connected between the fixed rod and the pushing rod; the sliding member is arranged on the fixed rod and pivotally connected to the connecting rod assembly, and the sliding member slides back and forth along the rails on both sides; the clamping member is connected to the sliding member, and the clamping member is provided with first protruding clamping portions opposite to each other on both sides and a guide portion extending behind the first protruding clamping portion.

[0005] The above two types of window hinges are roughly the same, and they are multi-link structures. However, the biggest disadvantage of the connecting rod is that the connecting rod will bend and deform when bearing weight. When the window sash is small, the load-bearing is small, and the bending deformation is small. When the window sash is large, the load-bearing is large, and the bending deformation is also large. After deformation, the window sash will sag, the gap between the upper edge of the window sash and the window frame will increase, and the gap between the lower edge of the window sash and the window frame will decrease. In severe cases, the window sash and the window frame will wear due to mutual interference or the window sash cannot be closed. Another way to solve the deformation of the connecting rod on the market is to match two different hinges on a window. The total height of the hinge above the window sash is low, and the total height of the hinge below the window sash is high. After the connecting rod is deformed under load, the window sash is exactly in the middle position. However, this method is a customized method. The weight of the window sash needs to remain unchanged, and the number of hinges will be doubled, which increases the difficulty of production. Unaware installers may also install it in reverse.

[0006] In summary, the existing window hinge can be further improved. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a sliding window hinge structure which has a reasonable structure and can adjust the upper and lower positions of the window sashes in response to the above-mentioned defects of the existing products.

[0008] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a sliding window hinge structure that can be adjusted up and down, including a first fixed plate for fixing on the window frame; a second fixed plate for fixing on the window sash; characterized in that: it also includes a second short rod, one end of which is hinged to the first fixed plate through a fifth hinge shaft, and the other end is hinged to the second fixed plate through an adjusting member, the adjusting member has a threaded shaft section and an optical axis section located above the threaded shaft section, an adjusting threaded hole is opened on the second short rod, the threaded shaft section of the adjusting member is threadedly connected in the adjusting threaded hole, the optical axis section is penetrated and axially limited on the second fixed plate, the second fixed plate can rotate about the central axis of the optical axis section, and the second fixed plate can move axially with the adjusting member.

[0009] As a preferred connection method between the adjustment member and the second fixing plate, a resting surface is formed between the root of the optical axis segment and the threaded axis segment, and a pressing plate is provided on the second fixing plate, and the pressing plate is anchored on the top surface of the second fixing plate by the optical axis segment passing through the second fixing plate, thereby constraining the second fixing plate between the resting surface and the pressing plate. The anchoring combined with the pressing plate can make the adjustment member and the second fixing plate firmly connected, and the second fixing plate can be effectively pressed between the pressing plate and the resting surface, ensuring that the upward and downward movement of the adjustment member can drive the second fixing plate to move upward and downward.

[0010] Further improvement includes a first limiting plate and a second limiting plate, the first limiting plate is constrained between the second fixing plate and the second short rod, the optical axis portion passes through the first limiting plate, the outer end of the first limiting plate forms an arc-shaped limiting portion protruding outwardly from one side of the window sash, the second limiting plate is fixed to the outer end of the first fixing plate and is adjacent to the side wall of the window frame, and a limiting groove matching the limiting portion is formed on the second limiting plate, and when the window sash is in a closed state, the limiting portion is snapped into the limiting groove. When the window sash is in a closed state, the limiting portion is snapped into the limiting groove, forming a constraint with each other, and the outer edge of the window cannot be further turned outward, ensuring that the window sash is tightly combined with the window frame, and it is not easy to make abnormal noise in windy weather.

[0011] In order to fix the first limit plate more stably on the second fixing plate, two downwardly protruding positioning posts are provided on the bottom surface of the second fixing plate, and the first limit plate is provided with positioning holes for the positioning posts to be inserted into. The cooperation between the two positioning posts and the positioning holes ensures that the first limit plate will not shake forward and backward relative to the second fixing plate.

[0012] Since the window sash is heavy, the adjusting part may become loose after long-term use, which may cause the window sash to move downward, resulting in the window sash being blocked from closing or failing to close. For this purpose, further improvements are made, and the lower end of the threaded shaft section is formed with a hexagonal head that exposes the second short rod downward. The setting of the hexagonal head is convenient for the operator to use a wrench to turn the adjusting part for fine-tuning. The outer bottom surface of the second short rod is detachably fixed with a stop plate, and the stop plate is provided with a stop hole whose shape matches the hexagonal head. When the stop plate is fixed to the outer bottom surface of the second short rod, the hexagonal head is located in the stop hole. Because the stop plate is fixed to the second short rod, and the hexagonal head of the adjusting part is constrained by the stop hole on the stop plate, so that the adjusting part cannot rotate, the stop plate has a locking effect on the adjusting part, effectively preventing the adjusting part from loosening. When adjustment is required, just remove the stop plate from the second short rod.

[0013] In order to more firmly fix the anti-rotation plate on the second short rod and to facilitate the removal of the anti-rotation plate from the second short rod, preferably, the anti-rotation plate is fixed to the outer bottom surface of the second short rod by screws.

[0014] Preferably, the outer end of the second fixing plate has an upward fixing flange for fixing to the side wall of the window sash. In this way, the second fixing plate is not only fixed to the bottom surface of the window sash, but also fixed to the side wall of the window sash through the fixing flange, so the second fixing plate is more securely fixed to the window sash.

[0015] The connection between the window sash and the window frame is on one side of the window sash and the window frame. Due to the influence of gravity and the accumulation of tolerance gaps in the connection between the connecting rods and the hinge shaft, the window sash is always prone to tilt relative to the window frame. The gap between the side wall of the window sash on one side of the hinge connection and the inner wall of the window frame is usually wider at the top and narrower at the bottom. In order to solve the problem of uneven gaps, the traditional way is to loosen the first fixed plate and then push the window sash to move for adjustment. Because the window sash is large and heavy, the adjustment accuracy of the moving window sash is very low and may require multiple adjustments. In view of the above-mentioned status quo, further improvements are made, one end of the above-mentioned first fixed plate has an upwardly extending adjustment wall, and a set screw is threadedly connected to the adjustment wall. The adjustment wall is arranged adjacent to the side wall of one side of the window frame, and the inner end of the set screw is against the side wall of the window frame. During assembly, the adjustment wall of the first fixing plate located on the upper inner top surface of the window frame will be firmly pressed against the inner wall of the window frame, and then the first fixing plate will be fixed to the upper inner top surface of the window frame. During adjustment, it is only necessary to loosen the connection between the first fixing plate located on the lower inner bottom surface of the window frame and the window frame, and then use a screwdriver to turn the set screw. Under the action of thread transmission, the first fixing plate located on the lower inner bottom surface of the window frame is driven to move relative to the window frame, thereby achieving fine-tuning. Thread transmission has the advantage of high adjustment accuracy.

[0016] In order to facilitate fixing the first fixing plate on the window frame and to facilitate releasing the lock between the first fixing plate and the window frame, preferably, a strip-shaped slide groove is provided on the bottom surface of the above-mentioned window frame, and positioning grooves are opened on the left and right groove walls of the slide groove. The first fixing plate is placed on the top of the slide groove, and a plurality of locking blocks are provided in the slide groove. The two sides of the locking block are located in the positioning grooves. A locking screw passes through the first fixing plate from top to bottom and is riveted to the locking block. When the locking screw drives the locking block to rotate to the locking position, the first fixing plate and the locking block are clamped on the upper groove wall of the positioning groove. When unlocking, it is only necessary to rotate the locking screw to the unlocking position, and the locking block will also rotate to the unlocking position. The first fixing plate and the locking block are not clamped on the upper groove wall of the positioning groove, so that the first fixing plate can be moved; when locking, it is only necessary to rotate the tightening locking screw to the locking position, and the locking block will also rotate to the locking position. The first fixing plate and the locking block are clamped on the upper groove wall of the positioning groove. After the position is completely determined, the first fixing plate is fixed to the window frame with self-tapping screws to fix the first fixing plate to the window frame.

[0017] Preferably, the other end of the first fixing plate has a guide portion bent downward and inserted into the slide slot. The cooperation between the guide portion and the slide slot has a restraining effect on the first fixing plate, ensuring that the first fixing plate moves only along the length direction.

[0018] As a preferred connecting rod structure between a first fixed plate and a second fixed plate, it also includes a first short rod, one end of which is hinged to the first fixed plate through a first hinge, and the first hinge axis can slide along the first fixed plate; a long rod, one end of which is hinged to the first fixed plate through a second hinge, and the other end is hinged to the second fixed plate through a third hinge, and the other end of the first short rod is hinged to the middle of the long rod through a fourth hinge, and the fourth hinge is adjacent to the second hinge; the second fixed plate, the first short rod, the long rod and the second short rod are all swung to a state where their length direction is consistent with the length direction of the first fixed plate, and the window sash is closed relative to the window frame. Of course, the aforementioned connecting rod structure can also adopt the slider and slot type connecting rod structure in the background technology, or other existing structural methods.

[0019] As an improvement, a guide groove is formed on the first fixing plate, a sliding block is provided in the guide groove, a cover plate covering the guide groove is provided on the top surface of the first fixing plate, the sliding block is fixed to the bottom of the cover plate, the first short rod is placed on the cover plate and is hinged to the sliding block through the first hinge shaft. The provision of the cover plate prevents debris from entering under the first fixing plate and affecting the sliding of the sliding block.

[0020] Compared with the prior art, the advantages of the present invention are: the second short rod in the hinge structure is hinged on the second fixed plate through an adjusting member, the threaded shaft section of the adjusting member is threadedly connected to the adjusting threaded hole on the second short rod, the optical axis section of the adjusting member is passed through and axially limited on the second fixed plate, so the rotation of the adjusting member can move axially relative to the second short rod, and the axial movement of the adjusting member can drive the axial movement of the second fixed plate, and the second fixed plate is fixed on the window sash, which finally drives the window sash to move up and down, and then adjusts the up and down position of the window sash, and the adjustment operation is convenient and high in precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention (window sash is in open state);

[0022] Figure 2 is a cross-sectional view along the length direction of the second fixing plate in an embodiment of the present invention (window sash is in an open state);

[0023] Figure 3 It is a cross-sectional view along the length direction of the first fixing plate in an embodiment of the present invention (the window sash is in an open state);

[0024] Figure 4 is a cross-sectional view along the width direction of the first fixing plate in an embodiment of the present invention (window sash is in an open state);

[0025] Figure 5 This is a three-dimensional exploded view of an embodiment of the present invention after the window sash and the window frame are removed (the window sash is in an open state);

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention (window sash closed state);

[0027] Figure 7 It is a three-dimensional schematic diagram of an embodiment of the present invention after removing the window sash and the window frame (window sash closed state). DETAILED DESCRIPTION

[0028] The present invention is further described in detail below with reference to the accompanying drawings.

[0029] like Figures 1 to 7 Shown is a preferred embodiment of the present invention.

[0030] A sliding window hinge structure capable of being adjusted up and down, comprising

[0031] The first fixing plate 3a is used to be fixed on the window frame 1. The first fixing plate 3a is in the shape of a thin plate as a whole. One end of the first fixing plate 3a has an upwardly extending adjustment wall 3a1, on which a set screw 14 is threadedly connected. The adjustment wall is arranged adjacent to a side wall of one side of the window frame 1, and the inner end of the set screw 14 abuts against the side wall of the window frame 1.

[0032] The first fixing plate 3a is fixed to the window frame 1 in the following manner. A strip-shaped slide groove 11 is provided on the bottom surface of the window frame 1, and positioning grooves 12 are provided on the left and right groove walls of the slide groove 11. The first fixing plate 3a is placed above the slide groove 11, and a plurality of locking blocks 10 are provided in the slide groove 11. Both sides of the locking blocks 10 are located in the positioning groove 12. A locking screw 13 passes through the first fixing plate 3a from top to bottom and is riveted to the locking block 10. When the locking screw 13 drives the locking block 10 to rotate to the locking position, the first fixing plate 3a and the locking block 10 are clamped on the upper groove wall of the positioning groove 12. The other end of the first fixing plate 3a has a guide portion 3a2 bent downward and inserted into the slide groove 11.

[0033] The second fixing plate 3b is fixed to the window sash 2. The second fixing plate 3b is in the shape of a thin plate as a whole. The outer end of the second fixing plate 3b has an upward fixing flange 3b2 for fixing to the side wall of the window sash 2. The fixing method of the second fixing plate 3b to the bottom of the window sash 2 can refer to the fixing method of the first fixing plate 3a.

[0034] One end of the first short rod 5a is hinged to the first fixed plate 3a through a first hinge shaft 6a, and the first hinge shaft 6a can slide along the first fixed plate 3a. A guide groove 3a3 is provided on the first fixed plate 3a, and a sliding block 31 that can slide is provided in the guide groove 3a3. A cover plate 32 covering the guide groove 3a3 is provided on the top surface of the first fixed plate 3a. The sliding block 31 is fixed to the bottom of the cover plate 32 by screws. The first short rod 5a is placed on the cover plate 32 and is hinged to the sliding block 31 through the first hinge shaft 6a.

[0035] One end of the long rod 4 is hinged to the first fixed plate 3a through the second hinge 6b, and the other end is hinged to the second fixed plate 3b through the third hinge 6c. The other end of the first short rod 5a is hinged to the middle part of the long rod 4 through the fourth hinge 6d, and the fourth hinge 6d is adjacent to the second hinge 6b.

[0036] The second short rod 5b has one end hinged on the first fixed plate 3a through the fifth hinge shaft 6e, and the other end hinged on the second fixed plate 3b through the adjusting member 7. The adjusting member 7 has a threaded shaft section 71 and an optical axis section 72 located above the threaded shaft section 71. An adjusting threaded hole 5b1 is opened on the second short rod 5b. The threaded shaft section 71 of the adjusting member 7 is threadedly connected in the adjusting threaded hole 5b1. The optical axis section 72 is penetrated and axially limited on the second fixed plate 3b. The second fixed plate 3b can rotate about the central axis of the optical axis section 72, and the second fixed plate 3b can move axially with the adjusting member 7.

[0037] A resting surface 721 is formed between the root of the optical axis segment 72 and the threaded axis segment 71, and a pressure plate 70 is provided on the second fixed plate 3b. The pressure plate 70 is anchored on the top surface of the second fixed plate 3b by the optical axis segment 72 passing through the second fixed plate 3b, thereby constraining the second fixed plate 3b between the resting surface 721 and the pressure plate 70.

[0038] It also includes a first limiting plate 8a and a second limiting plate 8b, the first limiting plate 8a is constrained between the second fixed plate 3b and the second short rod 5b, the optical axis portion passes through the first limiting plate 8a, the outer end of the first limiting plate 8a forms an arc-shaped limiting portion 8a1 protruding outwardly from one side of the window sash 2, the second limiting plate 8b is fixed to the outer end of the first fixed plate 3a and is adjacent to the side wall of the window frame 1, and a limiting groove 8b1 matching the limiting portion is formed on the second limiting plate 8b. When the second fixed plate 3b, the first short rod 5a, the long rod 4 and the second short rod 5b are all swung to a state where their length directions are consistent with the length direction of the first fixed plate 3a, the window sash 2 is in a closed state, such as Figure 6 , 7 As shown, the limiting portion 8a1 is inserted into the limiting groove 8b1. The bottom surface of the second fixing plate 3b is provided with two downwardly protruding positioning posts 3b1, and the first limiting plate 8a is provided with positioning holes 8a2 for the positioning posts 3b1 to be inserted into.

[0039] The lower end of the threaded shaft section 71 is formed with a hexagonal head 73 that exposes the second short rod 5b downward. The outer bottom surface of the second short rod 5b is detachably fixed with a rotation-stopping plate 9, and the rotation-stopping plate 9 is provided with a rotation-stopping hole 91 whose shape matches the hexagonal head 73. When the rotation-stopping plate 9 is fixed to the outer bottom surface of the second short rod 5b, the hexagonal head 73 is located in the rotation-stopping hole 91. In this embodiment, the rotation-stopping plate 9 is fixed to the outer bottom surface of the second short rod 5b by screws 92.

[0040] The working principle and process of the present sliding window hinge structure are as follows.

[0041] Adjustment of the left and right position of the window sash 2: During assembly, the adjustment wall 3a1 of the first fixing plate 3a located on the upper inner top surface of the window frame 1 will be firmly pressed against the inner side wall of the window frame 1, and then the first fixing plate 3a will be fixed to the upper inner top surface of the window frame 1. When adjusting the left and right position of the window sash 2, it is only necessary to loosen the connection between the first fixing plate 3a located on the lower inner bottom surface of the window frame 1 and the window frame 1, and then use a screwdriver to rotate the set screw 14. Under the action of the thread transmission, the first fixing plate 3a located on the lower inner bottom surface of the window frame 2 is driven to move relative to the window frame 2, thereby achieving fine-tuning. After the adjustment is completed, tighten the locking screw 12, and the first fixing plate 3a and the locking block 10 are close to each other and clamped on the upper groove wall of the positioning groove 12.

[0042] Adjustment of the upper and lower positions of the window sash 2: first remove the anti-rotation plate 9 from the second short rod 5b, and the hexagonal head 73 of the adjusting member 7 is disengaged from the restriction of the anti-rotation hole 91 on the anti-rotation plate 9. Rotate the hexagonal head 73, and the entire adjusting member 7 rotates. Because the threaded shaft section 71 of the adjusting member 7 is threadedly connected to the adjusting threaded hole 5b1 on the second short rod 5b, the optical axis section 72 of the adjusting member 7 is passed through and axially limited on the second fixed plate 3b. Therefore, the rotation of the adjusting member 7 can move axially relative to the second short rod 5b, and the axial movement of the adjusting member 7 can drive the axial movement of the second fixed plate 3b. The second fixed plate 3b is fixed on the window sash 2, which finally drives the window sash 2 to move up and down, and then fine-tunes the upper and lower positions of the window sash 2. The fine-tuning operation is convenient and has high precision.

[0043] It should be noted that in the description of this embodiment, the terms "front, back", "left, right", "inside, outside", "upper, lower" and the like indicating directions or positional relationships are all based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. The terms "install", "connect", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A sliding window hinge structure that can be adjusted up and down, comprising: A first fixing plate (3a) for fixing on the window frame (1); A second fixing plate (3b) for fixing on the window sash (2); Features: Also includes A second short rod (5b) has one end hinged to the first fixed plate (3a) via a fifth hinge shaft (6e), and the other end hinged to the second fixed plate (3b) via an adjusting member (7); the adjusting member (7) has a threaded shaft section (71) and an optical axis section (72) located above the threaded shaft section (71); an adjusting threaded hole (5b1) is provided on the second short rod (5b); the threaded shaft section (71) of the adjusting member (7) is threadedly connected in the adjusting threaded hole (5b1); the optical axis section (72) is passed through and axially limited on the second fixed plate (3b); the second fixed plate (3b) can rotate about the central axis of the optical axis section (72), and the second fixed plate (3b) can move axially along with the adjusting member (7).

2. The sliding window hinge structure that can be adjusted up and down according to claim 1 is characterized in that: A resting surface (721) is formed between the root of the optical axis segment (72) and the threaded axis segment (71), and a pressure plate (70) is provided on the second fixing plate (3b). The pressure plate (70) is anchored on the top surface of the second fixing plate (3b) by the optical axis segment (72) passing through the second fixing plate (3b), thereby constraining the second fixing plate (3b) between the resting surface (721) and the pressure plate (70).

3. The sliding window hinge structure that can be adjusted up and down according to claim 2 is characterized in that: It also includes a first limiting plate (8a) and a second limiting plate (8b), wherein the first limiting plate (8a) is constrained between the second fixing plate (3b) and the second short rod (5b), the optical axis portion passes through the first limiting plate (8a), the outer end of the first limiting plate (8a) forms an arc-shaped limiting portion (8a1) protruding outward from one side of the window sash (2), the second limiting plate (8b) is fixed to the outer end of the first fixing plate (3a) and is adjacent to the side wall of the window frame (1), and a limiting groove (8b1) matching the limiting portion is formed on the second limiting plate (8b), and when the window sash (2) is in a closed state, the limiting portion (8a1) is snapped into the limiting groove (8b1).

4. The sliding window hinge structure that can be adjusted up and down according to claim 3 is characterized in that: The bottom surface of the second fixing plate (3b) is provided with two downwardly protruding positioning columns (3b1), and the first limiting plate (8a) is provided with positioning holes (8a2) for the positioning columns (3b1) to be inserted into.

5. The sliding window hinge structure that can be adjusted up and down according to claim 1 is characterized in that: The lower end of the threaded shaft section (71) is formed with a hexagonal head (73) that exposes the second short rod (5b) downwardly. A detent plate (9) is detachably fixed to the outer bottom surface of the second short rod (5b). The detent plate (9) is provided with a detent hole (91) whose shape matches that of the hexagonal head (73). When the detent plate (9) is fixed to the outer bottom surface of the second short rod (5b), the hexagonal head (73) is located in the detent hole (91).

6. The sliding window hinge structure that can be adjusted up and down according to claim 1 is characterized in that: The outer end of the second fixing plate (3b) has an upward fixing flange (3b2) for fixing on the side wall of the window sash (2).

7. The upward and downward adjustable sliding window hinge structure according to claim 1, characterized in that: One end of the first fixing plate (3a) has an upwardly extending adjustment wall (3a1), on which a fixing screw (14) is threadedly connected, the adjustment wall is arranged adjacent to a side wall of one side of the window frame (1), and the inner end of the fixing screw (14) abuts against the side wall of the window frame (1).

8. The sliding window hinge structure that can be adjusted up and down according to claim 7 is characterized in that: A strip-shaped slide groove (11) is provided on the bottom surface of the window frame (1), and positioning grooves (12) are opened on the left and right groove walls of the slide groove (11). The first fixed plate (3a) is placed above the slide groove (11), and a plurality of locking blocks (10) are provided in the slide groove (11). Both sides of the locking blocks (10) are located in the positioning groove (12). A locking screw (13) passes through the first fixed plate (3a) from top to bottom and is riveted to the locking block (10). When the locking screw (13) drives the locking block (10) to rotate to a locked state, the first fixed plate (3a) and the locking block (10) are clamped on the upper groove wall of the positioning groove (12); the other end of the first fixed plate (3a) has a guide portion (3a2) bent downward and inserted into the slide groove (11).

9. The upwardly adjustable sliding window hinge structure according to any one of claims 1 to 8, characterized in that: It also includes a first short rod (5a), one end of which is hinged to the first fixed plate (3a) through a first hinge shaft (6a), and the first hinge shaft (6a) can slide along the first fixed plate (3a); A long rod (4), one end of which is hinged to the first fixed plate (3a) via a second hinge (6b), and the other end of which is hinged to the second fixed plate (3b) via a third hinge (6c); the other end of the first short rod (5a) is hinged to the middle of the long rod (4) via a fourth hinge (6d), and the fourth hinge (6d) is adjacent to the second hinge (6b); When the second fixed plate (3b), the first short rod (5a), the long rod (4) and the second short rod (5b) are all swung to a state where their length directions are consistent with the length direction of the first fixed plate (3a), the window sash (2) is closed relative to the window frame (1).

10. The sliding window hinge structure that can be adjusted up and down according to claim 9, characterized in that: A guide groove (3a3) is provided on the first fixed plate (3a), a sliding block (31) is provided in the guide groove (3a3), a cover plate (32) covering the guide groove (3a3) is provided on the top surface of the first fixed plate (3a), the sliding block (31) is fixed to the bottom of the cover plate (32), and the first short rod (5a) is placed on the cover plate (32) and is hinged to the sliding block (31) via a first hinge shaft (6a).

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