Self-locking hinge

Abstract

The utility model discloses a self-locking hinge, which comprises a fan blade mounted on a window sash and a frame blade mounted on a window frame, the fan blade is rotatably connected with the frame blade through a rotating shaft, and the self-locking hinge is characterized in that flanges are respectively arranged at the edges of the two sides of the bottom surface of a supporting plate in the fan blade, a clamping groove is formed between the two flanges, and the clamping groove is connected with the fan blade through the rotating shaft. A locking point matched with the clamping groove is arranged at the corresponding position of the window sash, the locking point is connected with a handle on the window sash and can horizontally move along with rotation of the handle, and when the locking point moves into the clamping groove, the locking point is locked by the clamping groove. The sealing performance, the heat preservation performance and the sound insulation performance of the window sash are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of door and window parts, in particular to a self-locking hinge. Background Art

[0002] Casement windows are windows that open and close in a horizontal direction. Casement windows are divided into push-pull type and top-hung type. Its advantages are large opening area, good ventilation, good sealing, excellent sound insulation, heat preservation and anti-seepage performance. Therefore, more and more families choose casement windows. In order to achieve a good locking effect, the existing casement window locking device generally consists of a lock seat and a lock rod. The existing casement window locking device usually only has one locking point for locking connection between the lock seat and the lock rod, which has the problem of insufficient locking. Utility Model Content

[0003] The utility model aims to provide a self-locking hinge which has a reasonable structure, is easy to use and can be firmly locked.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] A self-locking hinge comprises a fan blade installed on a window sash and a frame blade installed on a window frame, wherein the fan blade and the frame blade are rotatably connected via a rotating shaft, and guard edges are provided on both side edges of the bottom surface of a support plate in the fan blade, and a slot is formed between the two guard edges. A locking point matching the slot is provided at a corresponding position on the window sash, and the locking point is connected to a handle on the window sash and can move horizontally as the handle rotates. When the locking point moves into the slot, the slot locks the locking point.

[0006] The above technical solution has a reasonable structure and is easy to use. The edges on both sides of the bottom surface of the support plate in the fan blade are provided with retaining edges, and a card slot is formed between the two retaining edges. A locking point that matches the card slot is provided at a corresponding position on the window sash, and the locking point is connected to the handle on the window sash. By turning the handle, the locking point moves into the card slot, and the card slot locks the locking point, thereby improving the sealing performance, thermal insulation performance and sound insulation performance of the window sash.

[0007] In the improvement of the utility model, the entrance of the card slot is trumpet-shaped from large to small. The use of this structure has the advantage of strong guidance and is also helpful to improve the stability and safety of the entire structure.

[0008] In a further improvement of the utility model, the fan blade includes a fixed angle plate, a support plate, a hinge and a sleeve, one end of the hinge is connected to the sleeve, and the other end is connected to the fixed angle plate, and the support plate is fixed to the top surface of the fixed angle plate by screws.

[0009] In a further improvement of the utility model, a displacement adjustment mechanism is provided between the fixed angle plate and the support plate.

[0010] In a further improvement of the utility model, the displacement adjustment mechanism includes an adjustment bolt, the horizontal portion of the fixed angle plate is provided with a receiving groove, the bottom surface of the support plate has a boss matched with the receiving groove, the boss is provided with a threaded hole matched with the adjustment bolt along the axial direction, the boss is inserted into the receiving groove, and the end of the adjustment bolt passes through the threaded hole and abuts against the inner end surface of the receiving groove. The structure is simple and easy to use. The screws between the support plate and the fixed angle plate are loosened, the adjustment bolts are rotated, and the horizontal position of the support plate on the fixed angle plate is adjusted. Then, the screws are tightened to fix the position between the support plate and the fixed angle plate.

[0011] In the further improvement of the utility model, the fan blade is made of carbon steel. Carbon steel has high strength, can withstand large external forces and pressures, and can be processed into various shapes through forging, rolling and other processes, which is easy to manufacture. At the same time, compared with other alloy steels, the production cost of carbon steel is lower, and the raw materials are easy to obtain, so the price is relatively economical.

[0012] In summary, the utility model has a simple structure, is easy to install, easy to use, firmly locked, and has a low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings.

[0014] Figure 1 This is a structural schematic diagram of a self-locking hinge of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the mounting plate of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the utility model retaining edge;

[0017] Figure 4 It is a structural schematic diagram of the locking point of the utility model. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1As shown, the utility model is a self-locking hinge, comprising a fan blade 10 installed on a window sash and a frame blade 11 installed on a window frame. The fan blade 10 and the frame blade 11 are rotatably connected via a rotating shaft.

[0020] Combination Figure 2 As shown, the fan blade 10 includes a fixed angle plate 101 , a support plate 102 , a hinge 103 and a sleeve 104 .

[0021] One end of the hinge 103 is connected to the shaft sleeve 104, and the other end is connected to the fixed angle plate 101. The support plate 102 is fixed to the top surface of the fixed angle plate 101 by screws 105.

[0022] In this embodiment, the fan blade 10 is made of carbon steel. Carbon steel has high strength, can withstand large external forces and pressures, and can be processed into various shapes through forging, rolling and other processes, which is easy to manufacture. At the same time, compared with other alloy steels, carbon steel has a lower production cost and the raw materials are easy to obtain, so the price is relatively economical.

[0023] like Figure 2 and Figure 3 As shown, ribs 109 are provided on both side edges of the bottom surface of the support plate 102. In this embodiment, the ribs are integrally formed by stamping. A slot 106 is formed between the two ribs 109. A locking point 107 that matches the slot 106 is provided at a corresponding position on the window sash. The locking point 107 is connected to a handle (not shown in the figure) on the window sash through a connecting rod 108, and can move horizontally as the handle is rotated. When in use, the handle is turned, the connecting rod 108 moves, and the locking point is synchronously driven to move, and the locking point 107 moves into the slot 106, and the slot 106 clamps the locking point 107. This improves the sealing performance, thermal insulation performance, sound insulation performance and windproof performance of the window sash.

[0024] In addition, the entrance of the card slot 106 is trumpet-shaped from large to small. The use of this structure has the advantage of strong guidance and is also helpful to improve the stability and safety of the entire structure.

[0025] Combination Figure 4 As shown, a displacement adjustment mechanism 20 is provided between the fixed angle plate 101 and the support plate 102 .

[0026] The displacement adjustment mechanism 20 includes an adjustment bolt 21 and a receiving groove 22 provided on the horizontal part of the fixed angle plate 101. A boss 23 matching with the receiving groove 22 is provided on the bottom surface of the support plate 102. The boss 23 is provided with a threaded hole 24 matching with the adjustment bolt 21 along the axial direction. The boss 23 is inserted into the receiving groove 22, and the end of the adjustment bolt 21 passes through the threaded hole 24 and abuts against the inner end surface of the receiving groove 22. When in use, the screw 105 between the support plate 102 and the fixed angle plate 101 is loosened, the adjustment bolt 21 is rotated, and after adjusting the horizontal position of the support plate 102 on the fixed angle plate 101, the screw 105 is tightened to fix the position between the support plate 102 and the fixed angle plate 101. In this way, by adjusting the displacement of the support plate 102, the position of the window sash in the horizontal direction can be adjusted, which is very convenient.

[0027] During installation, the locking point 107 is installed on the connecting rod 108, and then the connecting rod 108 is installed on the window sash and connected to the handle of the window sash. Subsequently, the fan blade 10 and the frame blade 11 are installed on the window frame and the window sash respectively. After that, the window sash and the window frame are assembled together, and the fan blade 10 and the frame blade 11 are connected as a whole through a rotating shaft to complete the assembly. When in use, the window sash is closed and locked, and the handle is turned to drive the locking point 107 to move into the card slot 106, and the card slot 106 locks the locking point 15, thereby increasing the sealing performance, windproof performance and heat preservation effect of the window sash.

[0028] In summary, the utility model has a simple structure, is easy to install, easy to use, firmly locked, and has a low manufacturing cost.

[0029] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A self-locking hinge, comprising a fan blade mounted on a window sash and a frame blade mounted on a window frame, wherein the fan blade and the frame blade are rotatably connected via a rotating shaft, characterized in that: The edges on both sides of the bottom surface of the support plate in the fan blade are respectively provided with guard edges, and a slot is formed between the two guard edges. A locking point matching the slot is provided at a corresponding position on the window sash. The locking point is connected to the handle on the window sash and can move horizontally as the handle rotates. When the locking point moves into the slot, the slot locks the locking point.

2. The self-locking hinge according to claim 1, characterized in that: The entrance of the card slot is trumpet-shaped from large to small.

3. The self-locking hinge according to claim 1, characterized in that: The fan blade includes a fixed angle plate, a support plate, a hinge and a sleeve, one end of the hinge is connected to the sleeve, and the other end is connected to the fixed angle plate, and the support plate is fixed to the top surface of the fixed angle plate by screws.

4. The self-locking hinge according to claim 3, characterized in that: A displacement adjustment mechanism is provided between the fixed angle plate and the support plate.

5. The self-locking hinge according to claim 4, characterized in that: The displacement adjustment mechanism includes an adjusting bolt and a receiving groove arranged on the horizontal part of the fixed angle plate. The bottom surface of the support plate has a boss that matches the receiving groove. The boss has a threaded hole that matches the adjusting bolt along the axial direction. The boss is inserted into the receiving groove, and the end of the adjusting bolt passes through the threaded hole and abuts against the inner end surface of the receiving groove.

6. The self-locking hinge according to claim 1, characterized in that: The fan blades are made of carbon steel.

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