Hinge for window

Abstract

The hinge for the window comprises an opening and closing assembly, a sliding assembly and an adjusting assembly, in the opening and closing assembly, a first connecting arm is rotationally connected with a second bottom plate and a first bottom plate and rotationally connected with the first end of a second connecting arm, the second end of the second connecting arm is rotationally connected with the middle of a supporting arm, and the first end of the supporting arm is rotationally connected with the second end of a third connecting arm; the first end of the fourth connecting arm is rotationally connected with the first bottom plate, and the second end of the fourth connecting arm is rotationally connected with the first end of the third connecting arm; the sliding assembly comprises a sliding block, the lower portion of the sliding block is in sliding connection with a sliding groove of the first bottom plate, the upper portion of the sliding block is fixed to the middle of the fourth connecting arm, and the adjusting assembly comprises a front-back adjusting eccentric rivet and a left-right adjusting eccentric rivet. And the second bottom plate and the first bottom plate are connected with the fixed bottom plate through left and right adjusting eccentric rivets. Gap adjustment and pressing amount adjustment of the hinge can be achieved, and repeated work is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building door and window hardware, in particular to a hinge for window. BACKGROUND

[0002] The current connection mode of the window hinge and the frame part and the sash part in the field of building hardware fittings is mostly positioned and installed through screw holes, and a few are installed by using clamping pieces, but they all have the technical problem of being difficult to adjust after installation and fixation; at the same time, due to the difficulty in adjustment after fixation, it further leads to the problem of single profile specification of the existing hinge; in addition, there may also be problems such as inconsistent left and right gaps after installation of the hinge, inconsistent overlap after installation, and tightness during installation. CONTENT OF THE UTILITY MODEL

[0003] To at least partially solve the above problems, the present application provides a hinge for window, which can realize gap adjustment and compression adjustment between the window frame and the window sash after installation of the hinge through the adjusting assembly, reduce the repeated installation work when the position is incorrect after installation, enhance the adaptability of different profiles to make the overall window frame and window sash position more beautiful and more convenient to use.

[0004] The present application provides a hinge for window, which comprises an opening and closing assembly, a sliding assembly, an adjusting assembly,

[0005] The opening and closing assembly comprises a fixed bottom plate, a first bottom plate, a second bottom plate, a first connecting arm, a second connecting arm, a support arm, a third connecting arm and a fourth connecting arm, the first end of the first connecting arm is rotationally connected with the second bottom plate and the first bottom plate, the second end is rotationally connected with the first end of the second connecting arm, the second end of the second connecting arm is rotationally connected with the middle part of the support arm, the first end of the support arm is rotationally connected with the second end of the third connecting arm, the middle part of the third connecting arm is rotationally connected with the middle part of the first connecting arm, the first end of the fourth connecting arm is rotationally connected with the first bottom plate, and the second end is rotationally connected with the first end of the third connecting arm.

[0006] The sliding assembly comprises a sliding block, the lower part of the sliding block is slidingly connected with the sliding groove of the first bottom plate, and the upper part is fixedly connected with the middle part of the fourth connecting arm.

[0007] The adjusting assembly comprises front and rear adjusting eccentric rivets and left and right adjusting eccentric rivets, the first bottom plate is connected with the fixed bottom plate through the front and rear adjusting eccentric rivets, and the second bottom plate and the first bottom plate are connected with the fixed bottom plate through the left and right adjusting eccentric rivets.

[0008] In an optional embodiment, the hinge further comprises a fixing assembly, the fixing assembly comprises a clamping piece assembly and a jackscrew assembly, the jackscrew assembly comprises a support arm first jackscrew and a support arm second jackscrew; the support arm is fixed with the window sash through the jackscrew assembly, and the fixed bottom plate is fixed with the window frame through the clamping piece assembly.

[0009] In an alternative embodiment, the fixing assembly comprises a screw, and the arm is fixed to the sash by the screw; the fixing base is fixed to the window frame by the screw.

[0010] In an alternative embodiment, the second end of the second connecting arm is rotatably connected to the arm by an arm rivet, and the upper surface of the arm is provided with a countersunk groove for accommodating the arm rivet to avoid interference with the sash.

[0011] In an alternative embodiment, the fourth connecting arm is provided with a sliding block first rivet hole, a connecting rivet hole, and a sliding block hole, a sliding block first rivet is arranged in the sliding block first rivet hole to rotatably connect the first end of the fourth connecting arm to the first base plate, a fourth rivet is arranged in the connecting rivet hole to rotatably connect the second end of the fourth connecting arm to the first end of the third connecting arm, and a sliding block is arranged in the sliding block hole and fixedly connected thereto.

[0012] In an alternative embodiment, the first base plate comprises an upper protrusion, the upper protrusion is provided with a sliding block second rivet hole and an arc-shaped sliding groove, the sliding block first rivet is rotatably connected to the sliding block first rivet hole and the sliding block second rivet hole in sequence, and the sliding block is fixedly connected to the sliding block hole and slidably connected to the sliding groove in sequence.

[0013] In an alternative embodiment, the first base plate and the second base plate are arranged in a first recess and a second recess on both sides of the upper protrusion of the first base plate, respectively.

[0014] In an alternative embodiment, the first recess of the first base plate is provided with a first eccentric long hole along the width direction thereof and a first fixed long hole along the length direction thereof, and a left-right adjustment eccentric rivet passes through the first eccentric long hole and is fixed to the fixing base plate; the clamping piece assembly passes through the first fixed long hole, the first fixed hole of the fixing base plate, and is fixed to the window frame in sequence.

[0015] In an alternative embodiment, the second recess of the first base plate is provided with a second eccentric long hole and a second fixed long hole along the length direction thereof, and the second base plate is provided with a third eccentric long hole and a third fixed long hole along the length direction thereof, and a front-back adjustment eccentric rivet passes through the third eccentric long hole, the second eccentric long hole, and is fixed to the fixing base plate in sequence; the clamping piece assembly passes through the third fixed long hole, the second fixed long hole, the second fixed hole of the fixing base plate, and is fixed to the window frame in sequence.

[0016] In an alternative embodiment, the clamping piece assembly comprises a first clamping piece screw, a first clamping piece spring, a first clamping piece, a second clamping piece screw, a second spring, a second clamping piece, the second clamping piece screw passes through the first fixed long hole of the first bottom plate and the first fixed hole of the fixed bottom plate, and is fixed to the second clamping piece after the second spring is sleeved; or / and, the first clamping piece screw passes through the third fixed long hole of the second bottom plate, the second fixed long hole of the first bottom plate and the first fixed hole of the fixed bottom plate, and is fixed to the first clamping piece after the first clamping piece spring is sleeved.

[0017] The window hinge of the present application, the fixing assembly, the sliding assembly, the adjusting assembly and the opening and closing assembly are connected by rivets and constitute a complete hinge, which is installed in the groove of the window frame and the window sash profile, can realize the opening and closing of the window frame and the window sash, and limit the opening angle of the window sash; the adjusting assembly can adjust the gap after installation to achieve better installation effect; in addition, the installation and disassembly of the window hinge of the present application is simple and efficient, which improves the work efficiency of the installation workers and reduces the installation difficulty and cost. The gap adjustment and compression adjustment between the window frame and the window sash after installation can be realized by the adjusting assembly, the repeated installation work when the position is incorrect after installation is reduced, the adaptability of different profiles is enhanced, the position of the overall window frame and the window sash after installation is more beautiful, and the use is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0019] Figure 1 : it is the structural exploded schematic view of the present application;

[0020] Figure 2 : it is the opening state schematic view of the present application;

[0021] Figure 3 : it is the back view schematic view of the present application in opening state;

[0022] Figure 4 : it is the closing state schematic view of the present application;

[0023] Figure 5-1 : it is the maximum forward pressure adjustment schematic view of the present application;

[0024] Figure 5-2 : it is the maximum negative forward pressure adjustment schematic view of the present application;

[0025] Figure 6-1 : it is the maximum left-right adjustment schematic view of the present application;

[0026] Figure 6-2 : for left-right adjustment negative maximum schematic diagram;

[0027] 1- fixed bottom plate, 11- front and rear adjustment eccentric rivet, 111- front and rear adjustment eccentric rivet washer, 12- first clamping screw, 121- first clamping spring, 122- first clamping piece, 13- left and right adjustment eccentric rivet, 131- left and right adjustment eccentric rivet washer, 14- second clamping screw, 141- second spring, 142- second clamping piece;

[0028] 2- first bottom plate, 22- first bottom plate rivet;

[0029] 3- second bottom plate;

[0030] 4- first connecting arm, 41- first rivet, 411- first gasket, 42- second rivet, 422- second gasket;

[0031] 5- second connecting arm;

[0032] 6- support arm, 61- support arm first top wire, 62- support arm second top wire, 621- third gasket, 63- support arm rivet;

[0033] 7- third connecting arm, 71- third rivet, 711- fourth gasket;

[0034] 8- fourth connecting arm, 81- slider first rivet, 82- slider, 83- fourth rivet. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described clearly and completely below in combination with specific embodiments of the present application and corresponding drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] The current connection mode of the window hinge and the frame part and the fan part in the field of building hardware fittings is mostly installed through screw hole positioning, and a few use clamping type installation, but they all have the technical problem of being difficult to adjust after installation. At the same time, due to the difficulty in adjusting after installation, it further leads to the problem of single profile specification of the existing hinge. In addition, there may also be problems such as inconsistent left and right gaps after installation of the hinge, inconsistent overlap after installation, and not tight enough with the profile during installation.

[0037] In order to solve or partially solve the above problems, the present application provides a window hinge, as shown in the drawings, comprising an opening and closing assembly, a sliding assembly and an adjusting assembly,

[0038] The opening and closing assembly comprises a fixed bottom plate 1, a first bottom plate 2, a second bottom plate 3, a first connecting arm 4, a second connecting arm 5, a support arm 6, a third connecting arm 7, a fourth connecting arm 8, a first end of the first connecting arm 4 is rotatably connected with the second bottom plate 3 and the first bottom plate 2, a second end is rotatably connected with a first end of the second connecting arm 5, a second end of the second connecting arm 5 is rotatably connected with a middle part of the support arm 6, a first end of the support arm 6 is rotatably connected with a second end of the third connecting arm 7, a middle part of the third connecting arm 7 is rotatably connected with a middle part of the first connecting arm 4, a first end of the fourth connecting arm 8 is rotatably connected with the first bottom plate 2, a second end is rotatably connected with a first end of the third connecting arm 7.

[0039] The sliding assembly comprises a sliding block 82, a lower part of the sliding block 82 is slidably connected with a sliding groove of the first bottom plate 2, an upper part is fixedly connected with a middle part of the fourth connecting arm 8,

[0040] The adjusting assembly comprises a front and back adjusting eccentric rivet 11 and a left and right adjusting eccentric rivet 13, the first bottom plate 2 is connected with the fixed bottom plate 1 through the front and back adjusting eccentric rivet 11, the second bottom plate 3 and the first bottom plate 2 are connected with the fixed bottom plate 1 through the left and right adjusting eccentric rivet 13.

[0041] In an embodiment of the present application, the hinge further comprises a fixing assembly, the fixing assembly comprises a clamping piece assembly and a jackscrew assembly, the jackscrew assembly comprises a support arm first jackscrew 61 and a support arm second jackscrew 62, the support arm 6 is fixed with a sash through the jackscrew assembly, the fixed bottom plate 1 is fixed with a window frame through the clamping piece assembly.

[0042] In an embodiment of the present application, the fixing assembly comprises a screw, the support arm 6 is fixed with a sash through the screw, the fixed bottom plate 1 is fixed with a window frame through the screw.

[0043] In an embodiment of the present application, a second end of the second connecting arm 5 is rotatably connected with the support arm 6 through a support arm rivet 63, an upper surface of the support arm 6 is provided with a countersunk groove for accommodating the support arm rivet 63 to avoid interference with the sash.

[0044] In an embodiment of the present application, the fourth connecting arm 8 is provided with a sliding block first rivet hole, a connecting rivet hole and a sliding block hole, a sliding block first rivet 81 is arranged in the sliding block first rivet hole to rotatably connect a first end of the fourth connecting arm 8 with the first bottom plate 2, a fourth rivet 83 is arranged in the connecting rivet hole to rotatably connect a second end of the fourth connecting arm 8 with a first end of the third connecting arm 7, and the sliding block 82 is arranged in the sliding block hole and fixedly connected with the sliding block hole.

[0045] In an embodiment of the present application, the first bottom plate 2 comprises an upper protrusion, the upper protrusion is provided with a slider second rivet hole and an arc-shaped sliding slot, the slider first rivet 81 is rotationally connected with the slider first rivet hole and the slider second rivet hole in sequence; the slider 82 is fixedly connected with the slider hole and slidably connected with the sliding slot in sequence. The slider 82 is located in the arc-shaped sliding slot of the first bottom plate 2, and the opening and closing sliding of the hinge can be realized, and the maximum opening angle of the hinge is limited at the same time due to the profile limitation of the sliding slot.

[0046] In an embodiment of the present application, the first bottom plate 2 and the second bottom plate 3 are respectively arranged in the first recess and the second recess on the two sides of the upper protrusion of the first bottom plate 2.

[0047] In an embodiment of the present application, the first recess of the first bottom plate 2 is provided with a first eccentric long hole along the width direction thereof and a first fixed long hole along the length direction thereof, the left-right adjusting eccentric rivet 13 passes through the first eccentric long hole and is fixed with the fixed bottom plate 1; the clamping piece assembly passes through the first fixed long hole, the first fixed hole of the fixed bottom plate 1 in sequence and is fixed to the window frame.

[0048] In an embodiment of the present application, the second recess of the first bottom plate 2 is provided with a second eccentric long hole and a second fixed long hole along the length direction thereof, the second bottom plate 3 is provided with a third eccentric long hole and a third fixed long hole along the length direction thereof, the front-back adjusting eccentric rivet 11 passes through the third eccentric long hole, the second eccentric long hole and is fixed with the fixed bottom plate 1 in sequence; the clamping piece assembly passes through the third fixed long hole, the second fixed long hole, the second fixed hole of the fixed bottom plate 1 in sequence and is fixed to the window frame.

[0049] In an embodiment of the present application, the clamping piece assembly comprises a first clamping piece screw 12, a first clamping piece spring 121, a first clamping piece 122, a second clamping piece screw 14, a second spring 141 and a second clamping piece 142, the second clamping piece screw 14 passes through the first fixed long hole of the first bottom plate 2 and the first fixed hole of the fixed bottom plate 1, is fixed to the second clamping piece 142 after the second spring 141 is sleeved; or / and, the first clamping piece screw 12 passes through the third fixed long hole of the second bottom plate 3, the second fixed long hole of the first bottom plate 2 and the first fixed hole of the fixed bottom plate 1, is fixed to the first clamping piece 122 after the first clamping piece spring 121 is sleeved.

[0050] The window hinge of the present application, the opening and closing functions can be realized by the opening and closing assembly and the sliding assembly, so as to realize the opening and closing action of the window frame and the sash installed on the screen profile. In the opening process, the angle between the fixed bottom plate 1 and the supporting arm 6 changes from small to large, the sliding block 82 slides in the first bottom plate 2 sliding groove, until the hinge is opened to the maximum angle, at this time the sliding block 82 is driven to the position close to the middle of the hinge by the connecting arm and contacts with the end point of the first bottom plate 2 sliding groove, at the same time the fourth connecting arm 8 contacts with the rotating connection limiting point of the first bottom plate 2, the third connecting arm 7 contacts with the rotating connection limiting point of the first connecting arm 4, and each component jointly limits the maximum opening angle of the hinge.

[0051] The window hinge of the present application, the fixed assembly can install the supporting arm 6 on the sash. When installing, the supporting arm 6 is inserted into the groove reserved in the sash profile, and then fixed on the sash through the rotating top wire assembly, and the installation is more firm through the auxiliary fixing of the installation screw. The fixed bottom plate 1 can be fixed on the window frame through the clamping piece assembly, and after adjusting the installation position, the screw can be used for auxiliary fixing to realize more firm fixing effect. The installation method has the advantages of high installation and disassembly efficiency, simple installation method, good fixing effect after installation, and less tools.

[0052] The window hinge of the present application, the clamping piece is connected with the corresponding screw, and a spring is arranged between the two to increase the fixing property of the connection. After the corresponding screw is rotated, the clamping piece connected with the screw also rotates.

[0053] The window hinge of the present application, the adjusting assembly can realize the gap adjustment of the sash and the window frame after the hinge is installed. By rotating the eccentric rivet, the fixed bottom plate 1 and the first bottom plate 2 slide relatively, the first bottom plate 2 drives each component to realize the left-right adjustment and front-back adjustment of the sash.

[0054] When the hinge is adjusted left and right, the left-right adjustment eccentric rivet 13 cooperates with the first bottom plate 2 and the fixed bottom plate 1, and the left-right adjustment eccentric rivet 13 is rotated. When the rivet mark point points to the position close to the "+" mark, the first bottom plate 2 slides away from the fixed bottom plate 1, at this time the supporting arm 6 is driven to approach the sash and away from the fixed bottom plate 1, and the gap between the sash and the window frame becomes smaller. When the left-right adjustment eccentric rivet 13 mark point points to the position close to the "-" mark, the first bottom plate 2 slides towards the fixed bottom plate 1, at this time the supporting arm 6 is driven to approach the fixed bottom plate 1 and away from the sash, and the gap between the sash and the window frame becomes larger.

[0055] When the hinge is adjusted forward and backward, the forward and backward adjustment eccentric rivet 11 cooperates with the first bottom plate 2 and the fixed bottom plate 1, and rotates the forward and backward adjustment rivet 11. When the rivet mark point points to the position near the "+" mark, the first bottom plate 2 and the second bottom plate 3 produce backward sliding relative to the fixed bottom plate 1, at this time, the support arm 6 moves forward away from the fixed bottom plate 1 to drive the sash to move forward, and the sash moves to the outside of the window frame. When the rivet mark point points to the position near the "-" mark, the first bottom plate 2 and the second bottom plate 3 produce forward sliding relative to the fixed bottom plate 1, drive the support arm 6 to move backward to approach the fixed bottom plate 1, and the sash moves to the inside of the window frame.

[0056] The technical scheme of the present application will be further described in detail in combination with the drawings and specific embodiments.

[0057] Referring to Figures 1 to 6-2 In the embodiment, the fixed bottom plate 1 is installed on the window frame, and the support arm 6 is inserted into the sash profile installation slot for fixation.

[0058] The opening and closing assembly includes a fixed bottom plate 1, a first bottom plate 2, a second bottom plate 3, a first connecting arm 4, a second connecting arm 5, a support arm 6, a third connecting arm 7, and a fourth connecting arm 8. The fourth connecting arm 8 is rotatably connected to the first bottom plate 2 through a sliding block first rivet 81. The first connecting arm 4 is rotatably connected to the second bottom plate 3 and the first bottom plate 2 through a first bottom plate rivet 22. The fourth connecting arm 8 is rotatably connected to the third connecting arm 7 through a fourth rivet 83. The first connecting arm 4 is rotatably connected to the third connecting arm 7 through a first rivet 41. A first gasket 411 is arranged between the first connecting arm 4 and the third connecting arm 7. The second connecting arm 5 is rotatably connected to the first connecting arm 4 through a second rivet 42. A second gasket 422 is arranged between the second connecting arm 5 and the first connecting arm 4. The support arm 6 is rotatably connected to the third connecting arm 7 through a third rivet 71. A fourth gasket 711 is arranged between the support arm 6 and the third connecting arm 7. The support arm 6 is rotatably connected to the second connecting arm 5 through a support arm rivet 63. A third gasket 621 is arranged between the support arm 6 and the second connecting arm 5. The above parts are connected to form an opening and closing assembly to realize the opening and closing of the hinge. In the embodiment, after being installed on the external casement window profile, the hinge can bear the weight of the sash and realize the opening and closing of the sash and limit the opening angle of the sash.

[0059] The fixing assembly includes a clamping piece assembly, a top screw assembly, and a screw. The clamping piece assembly includes a first clamping piece screw 12, a first clamping piece spring 121, a first clamping piece 122, a second clamping piece screw 14, a second spring 141, and a second clamping piece 142. The top screw assembly includes a first top screw 61 and a second top screw 62. The first top screw 61 and the second top screw 62 are rotated to fix the support arm 6 to the sash. The first clamping piece screw 12 and the second clamping piece screw 14 are rotated to fix the first clamping piece 122 and the second clamping piece 142 to the window frame.

[0060] The sliding block 82 of the sliding assembly is fixedly connected to the fourth connecting arm 8 in the sliding groove of the first bottom plate 2, and can be installed on the window frame and the sash to open and close.

[0061] The adjusting assembly includes a front and rear adjusting eccentric rivet 11 and a left and right adjusting eccentric rivet 13. The first bottom plate 2 includes an upper protrusion in the middle, a first recess on the left side, and a second recess on the right side. The left and right adjusting eccentric rivet 13 is matched with the first eccentric long hole of the first recess of the first bottom plate 2 and is fixedly connected to the first bottom plate 2 through a left and right adjusting eccentric rivet washer 131. The front and rear adjusting eccentric rivet 11 is matched with the second eccentric long hole of the second recess of the first bottom plate 2 and is fixedly connected to the first bottom plate 2 through a front and rear adjusting eccentric rivet washer 111. The left and right sliding and the front and rear sliding of the first bottom plate 2 are driven by rotating the eccentric rivets in the above-mentioned assembly and the fixed bottom plate, so that the left and right adjusting and the front and rear pressing adjusting of the product are realized, so as to be suitable for different window frame and sash profiles.

[0062] In the embodiment, the installation process of the window hinge is as follows:

[0063] The support arm 6 is inserted into the sash installation groove, and then the first top screw 61 and the second top screw 62 are rotated to make the top surfaces of the two top screws contact the bottom surface of the profile. Then, the fixing screws are fixed in the sash installation groove to fix the support arm 6 to the sash.

[0064] The fixed bottom plate 1 is placed on the reserved position of the window frame. Whether the hinge is in the middle of the window frame and whether the side surface is tightly attached to the window frame are observed. Then, the first clamping piece screw 12 and the second clamping piece screw 14 are rotated to drive the up and down movement of the first clamping piece 122 and the second clamping piece 142, so that the first clamping piece 122 and the second clamping piece 142 are clamped and matched with the window frame profile. Finally, the screw is used to enhance the fixing effect.

[0065] The above merely provides an example of the present application, but is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application should be included in the scope of claims of the present application.

Claims

1. A window hinge, characterized in that, The hinge comprises an opening and closing assembly, a sliding assembly, and an adjusting assembly. The opening and closing assembly comprises a fixed bottom plate (1), a first bottom plate (2), a second bottom plate (3), a first connecting arm (4), a second connecting arm (5), a support arm (6), a third connecting arm (7), and a fourth connecting arm (8). The first end of the first connecting arm (4) is rotatably connected to the second bottom plate (3) and the first bottom plate (2), and the second end is rotatably connected to the first end of the second connecting arm (5). The second end of the second connecting arm (5) is rotatably connected to the middle part of the support arm (6). The first end of the support arm (6) is rotatably connected to the second end of the third connecting arm (7). The middle part of the third connecting arm (7) is rotatably connected to the middle part of the first connecting arm (4). The first end of the fourth connecting arm (8) is rotatably connected to the first bottom plate (2), and the second end is rotatably connected to the first end of the third connecting arm (7). The sliding assembly comprises a sliding block (82). The lower part of the sliding block (82) is slidably connected to the sliding groove of the first bottom plate (2), and the upper part is fixedly connected to the middle part of the fourth connecting arm (8). The adjusting assembly comprises front and rear adjusting eccentric rivets (11) and left and right adjusting eccentric rivets (13). The first bottom plate (2) is connected to the fixed bottom plate (1) through the front and rear adjusting eccentric rivets (11). The second bottom plate (3) and the first bottom plate (2) are connected to the fixed bottom plate (1) through the left and right adjusting eccentric rivets (13).

2. A window hinge as defined in claim 1, wherein The hinge further comprises a fixing assembly. The fixing assembly comprises a clamping piece assembly and a top wire assembly. The top wire assembly comprises a support arm first top wire (61) and a support arm second top wire (62). The support arm (6) is fixed to the sash through the top wire assembly, and the fixed bottom plate (1) is fixed to the window frame through the clamping piece assembly.

3. A window hinge as defined in claim 2, wherein The fixing assembly comprises screws. The support arm (6) is fixed to the sash through the screws. The fixed bottom plate (1) is fixed to the window frame through the screws.

4. A window hinge as defined in claim 1, wherein The second end of the second connecting arm (5) is rotatably connected to the support arm (6) through a support arm rivet (63). The upper surface of the support arm (6) is provided with a countersunk groove for accommodating the support arm rivet (63) to avoid interference with the sash.

5. A window hinge as defined in claim 2 wherein, The fourth connecting arm (8) is provided with a sliding block first rivet hole, a connecting rivet hole, and a sliding block hole. A sliding block first rivet (81) is arranged in the sliding block first rivet hole to rotatably connect the first end of the fourth connecting arm (8) to the first bottom plate (2). A fourth rivet (83) is arranged in the connecting rivet hole to rotatably connect the second end of the fourth connecting arm (8) to the first end of the third connecting arm (7). A sliding block (82) is arranged in the sliding block hole and fixedly connected thereto.

6. A window hinge as defined in claim 5, wherein The first bottom plate (2) comprises an upper protrusion provided with a sliding block second rivet hole and an arc-shaped sliding groove. The sliding block first rivet (81) is rotatably connected to the sliding block first rivet hole and the sliding block second rivet hole in sequence. The sliding block (82) is fixedly connected to the sliding block hole and slidably connected to the sliding groove in sequence.

7. A window hinge as defined in claim 6 wherein, The first bottom plate (2) and the second bottom plate (3) are respectively arranged in a first recess and a second recess on both sides of the upper protrusion of the first bottom plate (2).

8. A window hinge as defined in claim 7, wherein The first recess of the first bottom plate (2) is provided with a first eccentric long hole along its width direction and a first fixed long hole along its length direction, and the left-right adjusting eccentric rivet (13) passes through the first eccentric long hole and is fixed with the fixed bottom plate (1); the clamping piece assembly passes through the first fixed long hole, the first fixed hole of the fixed bottom plate (1) in sequence and is fixed to the window frame.

9. A window hinge as defined in claim 7 wherein, The second recess of the first bottom plate (2) is provided with a second eccentric long hole and a second fixed long hole along its length direction, and the second bottom plate (3) is provided with a third eccentric long hole and a third fixed long hole along its length direction, and the front-back adjusting eccentric rivet (11) passes through the third eccentric long hole and the second eccentric long hole and is fixed with the fixed bottom plate (1); the clamping piece assembly passes through the third fixed long hole, the second fixed long hole, the second fixed hole of the fixed bottom plate (1) in sequence and is fixed to the window frame.

10. A window hinge as claimed in claim 8 or 9, characterised in that, The clamping piece assembly comprises a first clamping piece screw (12), a first clamping piece spring (121), a first clamping piece (122), a second clamping piece screw (14), a second spring (141) and a second clamping piece (142), the second clamping piece screw (14) passes through the first fixed long hole of the first bottom plate (2) and the first fixed hole of the fixed bottom plate (1), is sleeved with the second spring (141) and is fixed to the second clamping piece (142); or / and, the first clamping piece screw (12) passes through the third fixed long hole of the second bottom plate (3), the second fixed long hole of the first bottom plate (2) and the first fixed hole of the fixed bottom plate (1), is sleeved with the first clamping piece spring (121) and is fixed to the first clamping piece (122).

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