I-shaped hinge

Abstract

The utility model discloses an I-shaped hinge which comprises a fixing arm used for fixing a window frame section bar and a supporting arm used for being fixed with a window sash section bar, the fixing arm and the supporting arm are hinged together through a hinge arm assembly so that the supporting arm and the fixing arm can be opened and closed relatively, and a fastening structure is arranged on the fixing arm. The fastening structure comprises a rotary clamping assembly, a counterbore and a first penetrating hole are formed in the fixing arm, the rotary clamping assembly is installed in the counterbore and clamped with a transverse C groove in the lower side of a window frame profile after being screwed and clamped, a first installation screw is arranged in the first penetrating hole and used for fixing the fixing arm to the window frame profile, and a second installation screw is arranged in the second penetrating hole and used for fixing the fixing arm to the window frame profile. The front end of the fixed arm is provided with an insertion part which is inserted into a front side vertical C groove of the window frame profile, and two sides of the insertion part are provided with grooves which are mutually clamped with the front side vertical C groove. According to the utility model, the fixed arm can be more accurately and firmly mounted on the window frame section bar.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of doors and windows, in particular to a I-shaped hinge. BACKGROUND

[0002] In the door and window industry, casement windows are generally fixed on the window frame profile by hinges to achieve the fixed installation of the sash. The fixing between the hinge, the sash profile and the window frame profile is achieved by screws. Since the wall thickness of the window frame profile is only 1-2 mm, the actual engagement thickness of the screw and the profile is also only 1-2 mm. Moreover, if the screw is tightened too hard, it is easy to cause the screw to slip. At the same time, the screw and the window frame profile are made of different materials and have different hardnesses, and it is difficult to avoid the occurrence of corrosion in the long-term use, which causes the screw to loosen and further causes the screw to loosen. Moreover, when the sash profile is subjected to a large external force, the risk of screw loosening will further increase, which will cause safety hazards. SUMMARY

[0003] The utility model aims at providing a I-shaped hinge which is easy to install and firmly fixed.

[0004] The utility model can achieve the purpose by the following technical scheme:

[0005] A I-shaped hinge, comprising a fixing arm for fixing with a window frame profile, a supporting arm for fixing with a sash profile, the fixing arm and the supporting arm are hinged together through a hinge arm assembly, so that the supporting arm and the fixing arm can be relatively opened and closed, the fixing arm is provided with a fastening structure, the fastening structure comprises a rotary clamping assembly, the fixing arm is provided with a countersunk hole and a first perforation, the rotary clamping assembly is installed in the countersunk hole, and the rotary clamping assembly is clamped with the lower side horizontal C groove of the window frame profile after rotation, the first perforation is provided with a first mounting screw, the first mounting screw is used for fixing the fixing arm on the profile of the window frame, the fixing arm is provided with an insertion part inserted into the front side vertical C groove of the window frame profile at the front end, the two sides of the insertion part are provided with grooves, and the two grooves are clamped on the clamping edges of the front side vertical C groove.

[0006] By inserting the insertion part of the fixing arm into the front side vertical C groove of the window frame profile, the grooves of the insertion part and the front side vertical C groove form a close clamping structure, the first mounting screw is used to lock the fixing arm on the profile of the window frame by penetrating the first perforation, and the rotary clamping assembly is clamped with the lower side horizontal C groove of the window frame profile by rotating. In this way, since the grooves of the insertion part and the rotary clamping assembly jointly bear the force originally borne by the mounting screw, the mounting screw is no longer the main force-bearing component, so that the mounting screw is not easy to loosen even after long-term use.

[0007] In the utility model specific implementation mode: the rear end of the fixed arm has the flanging inserted into the downward extending lower side horizontal C groove. Adopt this structure, the flanging is clamped in the lower side horizontal C groove and forms the mutual clamping structure with the lower side horizontal C groove, so that the installation of the fixed arm is more stable.

[0008] In the utility model specific implementation mode: the rotating clamping assembly includes the fastening screw and the rotating piece, the screw head of the fastening screw has the tool hole, the fastening screw is installed in the countersunk hole, and the lower end thereof extends downward to the back of the fixed arm and is connected with the rotating piece, and the rotating piece rotates along with the rotation of the fastening screw.

[0009] In the utility model specific implementation mode: the rotating piece includes the U-shaped plate and the edge connected to the two ends of the U-shaped plate and protruding outward.

[0010] In the utility model specific implementation mode: the articulated arm assembly includes the first articulated arm, the second articulated arm, the third articulated arm and the connecting plate, the first articulated arm and the second articulated arm are arranged in cross, are articulated through the pin shaft in the middle, one end of the first articulated arm is articulated with the fixed arm, the other end is articulated with one end of the third articulated arm, one end of the second articulated arm is articulated to the one end of the bracket arm close to the fixed arm, the other end is articulated with one end of the connecting plate, the other end of the connecting plate is articulated on the fixed arm, and the other end of the third articulated arm is articulated to the middle position of the bracket arm through the pin shaft.

[0011] In the utility model specific implementation mode: the bracket arm is provided with the second perforation, and the second mounting screw for locking the bracket arm on the window sash profile is arranged in the second perforation.

[0012] In conclusion, the utility model discloses the mutual clamping of the rotating clamping assembly and the lower side horizontal C groove of the window frame profile, the fixing of the fixed arm on the window frame profile through the first mounting screw passing through the first perforation, and the mutual clamping of the recess of the insertion part of the front end of the fixed arm and the front side vertical C groove of the window frame profile, so that the fixed arm can be more accurately and firmly installed on the window frame profile. BRIEF DESCRIPTION OF DRAWINGS

[0013] The utility model will be further described in connection with the drawings.

[0014] Figure 1 It is the structure schematic view of the I-shaped hinge of the utility model;

[0015] Figure 2 It is the back view of the hinge of the utility model;

[0016] Figure 3 It is shown that the hinge is installed on the window frame;

[0017] Figure 4 It is Figure 3 The enlarged view of the hinge. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0019] Please refer to Figure 1 and Figure 3 The utility model discloses a I-shaped hinge, including the fixed arm 10 for with the window frame section bar 9 fixed, the support arm 11 for with the sash section bar fixed. Among them, the fixed arm 10 and the support arm 11 are hinged together through the hinge arm assembly 20, so that the support arm 11 and the fixed arm 10 can be relatively opened and closed, so as to realize the opening and closing of the sash.

[0020] In the embodiment, the hinge arm assembly 20 includes first hinge arm 21, second hinge arm 22, third hinge arm 23 and connecting plate 24. Specifically, the first hinge arm 21 and the second hinge arm 22 are arranged in cross, and are hinged through the pin shaft 25 in the middle. One end of the first hinge arm 21 is connected to the front end of the fixed arm, and the other end is hinged to the free end of the third hinge arm 23. The fixed end of the second hinge arm 22 is hinged to one end of the support arm 11 close to the fixed arm, and the free end is hinged to the free end of the connecting plate 24, and the other end of the connecting plate 24 is hinged to the rear end of the fixed arm. The fixed end of the third hinge arm 23 is hinged to the middle position of the support arm 11 through the pin shaft.

[0021] In combination with Figure 2 and Figure 4 As shown in the drawings, the fixed arm 10 is provided with a fastening structure, and the fastening structure includes two rotating clamping assemblies 13. The first perforation 14 and the two countersunk holes 15 are arranged on the fixed arm 10. Among them, the two rotating clamping assemblies 13 are respectively installed in the corresponding countersunk holes 15, and are clamped with the lower side transverse C groove 901 of the window frame section bar 9 after rotating. In addition, the mounting screw is arranged in the first perforation, and the mounting screw is used for fixing the fixed arm on the section bar of the window frame. In addition, the front end of the fixed arm 10 has an insertion part 101 inserted into the front side vertical C groove of the window frame section, and the left and right sides of the insertion part 101 are provided with grooves 102, and the two grooves 102 are clamped on the clamping edge 902 of the front side vertical C groove. The rear end of the fixed arm 10 has a folded edge 103 extending downward and inserted into the lower side transverse C groove 901, and the two clamping edges 902 of the lower side transverse C groove 901 limit the folded edge 103, so that the installation of the fixed arm is more stable.

[0022] As Figure 1 andFigure 2 As shown, in this embodiment, the rotating clamping assembly 13 comprises a fastening screw 131 and a rotating piece 132. The fastening screw 131 is arranged on the fixed arm 10 through the counterbore 15. The rotating piece 132 is connected with the end of the fastening screw 131 extending out of the back of the fixed arm 20, and rotates with the fastening screw 131. The rotating piece 132 comprises a U-shaped plate and two edges 1322 protruding outwardly at the two ends of the U-shaped plate 1321. The tool hole 133 is provided on the screw head of the fastening screw 131. The tool hole 133 is an internal hexagon. Thus, the rotating piece 132 is rotated by the tool acting on the tool hole 133, and the two edges 1322 of the rotating piece 132 are interlocked with the lower lateral C groove 901 of the window frame profile 9. In addition, when the fastening screw 131 penetrates the counterbore, the screw head should be sunk into the counterbore and not protrude out of the surface of the fixed arm, so as to avoid affecting the movement of other components.

[0023] The second through hole 111 is provided on the supporting arm 11. The mounting screw for locking the supporting arm 11 on the window sash profile is arranged in the second through hole 111.

[0024] During installation, the fixed arm 10 is slightly inclined, and the insertion part 101 of the fixed arm 10 is inserted into the front vertical C groove of the window frame profile. Then, the fixed arm 10 is adjusted, so that the groove 102 of the insertion part 101 is interlocked with the front vertical C groove 901, and then the fixed arm 10 is fixed on the profile of the window frame by using the mounting screw penetrating the first through hole 14. Then, the rotating piece 132 is rotated by the tool acting on the tool hole 133, so that the two edges 1322 of the rotating piece 132 are interlocked with the lower lateral C groove 901 of the window frame profile 9. Finally, the supporting arm 11 is fixed on the profile of the window sash by using the mounting screw penetrating the second through hole 111.

[0025] In summary, in the utility model, the insertion part of the fixed arm is inserted into the front vertical C groove of the window frame profile, the groove of the insertion part is interlocked with the front vertical C groove, the fixed arm is locked on the profile of the window frame by the mounting screw penetrating the first through hole, and the rotating piece is interlocked with the lower lateral C groove of the window frame profile. Thus, the groove of the insertion part and the rotating piece jointly bear the pressure originally borne by the mounting screw, so that the mounting screw is not the main stressed component, and the mounting screw is not prone to loosening even after long time use. The fixed arm is accurately and firmly fixed on the profile of the window frame.

[0026] The above has carried out the detailed description to one embodiment of the utility model, but the content described is only the preferred embodiment of the utility model, cannot be considered for limiting the implementation scope of the utility model. All equal changes and improvements etc. that are made in the utility model application scope should still belong to the patent coverage scope of the utility model.

Claims

1. An I-shaped hinge, comprising a fixed arm for fixing to a window frame profile and a support arm for fixing to a window sash profile, wherein the fixed arm and the support arm are hinged together by a hinge arm assembly, allowing the support arm and the fixed arm to open and close relative to each other, and wherein the fixed arm is provided with a fastening structure, characterized in that, The fastening structure comprises a rotary clamping assembly, the fixing arm is provided with a countersunk hole and a first through hole, the rotary clamping assembly is installed in the countersunk hole, and the rotary clamping assembly is clamped with the lower side transverse C groove of the window frame profile after rotation.

2. The I-shaped hinge according to claim 1, characterized in that The rear end of the fixing arm is provided with a folding edge which extends downward and is inserted into the lower side transverse C groove.

3. The I-shaped hinge according to claim 1, characterized in that, The rotary clamping assembly comprises a fastening screw and a rotary part, the head of the fastening screw is provided with a tool hole, the fastening screw is installed in the countersunk hole, the lower end of the fastening screw extends out of the back of the fixing arm and is connected with the rotary part, and the rotary part rotates along with the rotation of the fastening screw.

4. The I-shaped hinge according to claim 3, characterized in that The rotary part comprises a U-shaped plate and a rim which is connected to the two ends of the U-shaped plate and protrudes outward.

5. The I-shaped hinge according to claim 1, characterized in that, The hinged arm assembly comprises a first hinged arm, a second hinged arm, a third hinged arm and a connecting plate, the first hinged arm and the second hinged arm are arranged in a cross shape and are hinged through a pin shaft, one end of the first hinged arm is hinged with the fixing arm, the other end of the first hinged arm is hinged with one end of the third hinged arm, one end of the second hinged arm is hinged with the end of the supporting arm which is close to the fixing arm, the other end of the second hinged arm is hinged with one end of the connecting plate, the other end of the connecting plate is hinged with the fixing arm, and the other end of the third hinged arm is hinged with the middle position of the supporting arm through a pin shaft.

6. The I-shaped hinge according to claim 1, characterized in that, The supporting arm is provided with a second through hole, and the second through hole is provided with a second mounting screw which is used for locking the supporting arm on the window sash profile.

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