High-toughness hinge

Abstract

The utility model relates to the field of hinge discloses a high tenacity hinge, including upper hinge, the upper hinge rotatable setting in the right side of lower hinge, the left side fixed with first hinge axle of upper hinge, the right side fixed with second hinge axle of lower hinge, the front side, rear side of upper hinge and lower hinge are fixed with two reinforcing strips respectively, the two reinforcing strips on upper hinge and lower hinge are fixed with a plurality of first connecting pieces respectively, the front side, rear side of upper hinge and lower hinge are fixed with a plurality of second connecting pieces respectively. In the utility model, through the cooperation of reinforcing strip, first connecting piece, second connecting piece, a multilayer, high -strength connection system is formed, effectively increases the tenacity of hinge whole, makes it can adapt to various complex use environment and larger load change, reduced the damage risk of hinge in the long -term use process because of stress concentration or connection loosening, prolongs the service life of hinge.

Description

Technical Field

[0001] This utility model relates to the technical field of hinges, specifically a high-toughness hinge. Background Technology

[0002] Hinges are mainly installed on doors and windows to connect doors to door frames and windows to window frames, allowing relative rotation between them. Existing hinges generally consist of a spindle (also called a pivot) and two hinge plates with protective sleeves fitted onto the spindle.

[0003] A hinge, as disclosed in Chinese Patent Publication No. CN214576392U, comprises an upper hinge, an upper hinge shaft, a lower hinge, and a lower hinge shaft. The upper hinge is connected to the upper hinge shaft, and the lower hinge is connected to the lower hinge shaft. The lower hinge shaft has an integrally formed upwardly protruding pivot, and the upper hinge shaft has a pivot groove. A wear-resistant sleeve is provided within the pivot groove. One end of the wear-resistant sleeve is tightly fitted to the inner wall of the pivot groove, and the other end extends out of the pivot groove and covers the edge of the groove opening. Both ends of the wear-resistant sleeve have communicating openings. The pivot, wear-resistant sleeve, and pivot groove are fitted together to connect the upper and lower hinges. A seamless, non-porous upper welded layer is laser-welded between the upper hinge and the upper hinge shaft; a seamless, non-porous lower welded layer is laser-welded between the lower hinge and the lower hinge shaft.

[0004] In the above solution, the upper hinge is connected to the upper hinge shaft and the lower hinge is connected to the lower hinge shaft by laser welding, which has the following disadvantages: when using this hinge, the connection method between the hinge and the hinge shaft is limited. Utility Model Content

[0005] The purpose of this invention is to provide a high-toughness hinge to solve the problem that the connection method between the hinge and the hinge shaft is limited during use.

[0006] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a high-toughness hinge, comprising an upper hinge, the upper hinge being rotatably disposed on the right side of a lower hinge, a first hinge shaft being fixed to the left side of the upper hinge, and a second hinge shaft being fixed to the right side of the lower hinge, the second hinge shaft being rotatably disposed below the first hinge shaft, two reinforcing strips being fixed to the front and rear sides of the upper and lower hinges respectively, the two reinforcing strips on the upper hinge being fixedly connected to the first hinge shaft respectively, the two reinforcing strips on the lower hinge being fixedly connected to the second hinge shaft respectively, a plurality of first connecting members being fixed to the two reinforcing strips on the upper and lower hinges respectively, the first connecting members on the upper hinge being fixedly connected to the first hinge shaft, the first connecting members on the lower hinge being fixedly connected to the second hinge shaft, a plurality of second connecting members being fixed to the front and rear sides of the upper and lower hinges respectively, the plurality of upper second connecting members being fixedly connected to the two upper reinforcing strips respectively, and the plurality of lower second connecting members being fixedly connected to the two lower reinforcing strips respectively.

[0007] Preferably, the inner sides of several reinforcing strips and the first connecting members are all arc-shaped and are adapted to the outer walls of the first hinge shaft and the second hinge shaft respectively; the outer sides of several first connecting members are all arc-shaped; and the shapes of several second connecting members are all arc-shaped.

[0008] Preferably, the bottom end of the first hinge shaft is provided with a rotating groove, and the second hinge shaft is provided with an integral upwardly protruding rotating shaft. A wear-resistant sleeve is provided in the rotating groove. One end of the wear-resistant sleeve is tightly attached to the inner wall of the rotating groove, and the other end extends out of the rotating groove and covers the edge of the groove opening. Both ends of the wear-resistant sleeve are provided with communicating sleeve openings. The rotating shaft, the wear-resistant sleeve and the rotating groove are fitted together to connect the upper hinge and the lower hinge. The bottom end of the rotating groove is rounded.

[0009] Preferably, both the upper and lower hinges have several mounting holes on their front sides, the lower hinge has an anti-pry hole on its front side, an elastic bushing is fixed inside the anti-pry hole, and an anti-pry nail is fixed on the front side of the upper hinge, the anti-pry nail passing through the elastic bushing.

[0010] Preferably, an oil injection hole is provided on the front side of the first hinge shaft, and the oil injection hole is connected to the interior of the rotating groove.

[0011] Preferably, the inside of the oil injection hole is fitted with a sealing plug.

[0012] Compared with existing technologies, a high-toughness hinge employing the above-mentioned technical solution has the following beneficial effects:

[0013] First, in use, by using the reinforcement strip, the first connector, and the second connector together, a multi-layered, high-strength connection system is formed, which effectively increases the overall toughness of the hinge, enabling it to adapt to various complex usage environments and large load changes, reducing the risk of damage to the hinge due to stress concentration or loose connections during long-term use, and extending the service life of the hinge.

[0014] Second, during use, it can effectively disperse and withstand the stress generated by the hinge during rotation, avoiding connection failure caused by stress concentration and further improving the high toughness performance of the hinge. By changing the right angle at the bottom of the rotating groove to a rounded corner, the stress concentration factor is reduced, reducing the risk of cracking at the bottom of the rotating groove due to stress concentration, and further improving the reliability and service life of the hinge;

[0015] Thirdly, during use, it can fix the upper and lower hinges when the first and second hinge shafts are pried open, preventing doors and windows from being pried open. The elastic bushing can effectively reduce external impact, avoiding excessive damage to the hinges themselves and the door and window structure. Lubricating oil can fill the gaps between the rotating groove, the shaft, and the wear-resistant sleeve, reducing friction and wear, and improving the smoothness of hinge rotation. The sealing plug is made of rubber, which has good sealing performance and can tightly fit the inner wall of the oil injection hole, preventing impurities from entering and effectively protecting the cleanliness and lubrication environment inside the rotating groove. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of an embodiment.

[0017] Figure 2 This is a breakdown diagram of an embodiment.

[0018] Figure 3 This is a schematic cross-sectional view of the first hinge shaft and wear-resistant sleeve in an embodiment.

[0019] Figure 4 For the example Figure 2 Enlarged diagram of point A in the middle.

[0020] Figure 5 For the example Figure 3 Enlarged diagram of point B in the middle.

[0021] In the diagram: 1. Upper hinge; 2. Lower hinge; 3. First hinge shaft; 4. Second hinge shaft; 5. Reinforcing strip; 6. First connector; 7. Second connector; 8. Rotating groove; 9. Shaft; 10. Wear-resistant sleeve; 11. Rounded corner; 12. Mounting hole; 13. Anti-pry hole; 14. Elastic bushing; 15. Anti-pry nail; 16. Oil injection hole; 17. Sealing plug. Detailed Implementation

[0022] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0023] like Figures 1-5 As shown, a high-toughness hinge includes an upper hinge 1, which is rotatably disposed on the right side of a lower hinge 2. A first hinge shaft 3 is fixed to the left side of the upper hinge 1, and a second hinge shaft 4 is fixed to the right side of the lower hinge 2. The second hinge shaft 4 is rotatably disposed below the first hinge shaft 3. Two reinforcing strips 5 are fixed to the front and rear sides of the upper hinge 1 and the lower hinge 2, respectively. The two reinforcing strips 5 on the upper hinge 1 are fixedly connected to the first hinge shaft 3, and the two reinforcing strips 5 on the lower hinge 2 are fixedly connected to the second hinge shaft 4. Next, several first connecting pieces 6 are fixed to the two reinforcing strips 5 on the upper hinge 1 and the lower hinge 2 respectively. The first connecting pieces 6 on the upper hinge 1 are fixedly connected to the first hinge shaft 3, and the first connecting pieces 6 on the lower hinge 2 are fixedly connected to the second hinge shaft 4. Several second connecting pieces 7 are fixed to the front and rear sides of the upper hinge 1 and the lower hinge 2 respectively. The several second connecting pieces 7 on the upper side are fixedly connected to the two reinforcing strips 5 on the upper side respectively, and the several second connecting pieces 7 on the lower side are fixedly connected to the two reinforcing strips 5 on the lower side respectively.

[0024] In use, the upper hinge 1 and the lower hinge 2 rotate via the first hinge shaft 3 and the second hinge shaft 4, respectively. The reinforcing strip 5 enhances the connection strength and stability between the upper hinge 1 and the lower hinge 2 and the first hinge shaft 3 and the second hinge shaft 4, respectively. The reinforcing strip 5 is made of high-strength alloy steel, possessing excellent tensile strength and toughness, effectively dispersing and bearing the stress generated during hinge rotation, preventing localized stress concentration that could lead to breakage, thus improving the overall toughness of the hinge. Simultaneously, the first connecting piece 6 is also made of high-strength alloy steel. By increasing the connection area and optimizing the connection structure, it further improves the connection reliability between the reinforcing strip 5 and the first hinge shaft 3 and the second hinge shaft 4, making the hinge less prone to loosening or deformation under heavy loads, further enhancing the hinge's high toughness performance. Furthermore, the second connecting piece 7 is made of aluminum alloy, which is lightweight, high-strength, and has good toughness. It strengthens the connection between the reinforcing strip 5 and the upper hinge 1 and the lower hinge 2, making the overall hinge structure more compact and stable. By strengthening the use of strip 5, first connector 6, and second connector 7, a multi-layered, high-strength connection system is formed, which effectively increases the overall toughness of the hinge, enabling it to adapt to various complex usage environments and large load changes. This reduces the risk of damage to the hinge due to stress concentration or loose connections during long-term use and extends the service life of the hinge.

[0025] like Figures 1-5As shown, the inner sides of several reinforcing strips 5 and the first connecting member 6 are all arc-shaped, and are adapted to the outer walls of the first hinge shaft 3 and the second hinge shaft 4 respectively. The outer sides of several first connecting members 6 are all arc-shaped, and the shapes of several second connecting members 7 are all arc-shaped.

[0026] In use, the inner sides of both the reinforcing strip 5 and the first connector 6 are arc-shaped, which can better fit the outer wall of the hinge shaft, making the connection tighter, reducing the gap at the connection, thereby reducing the stress concentration factor and improving the reliability and stability of the connection. The outer side of the first connector 6 is arc-shaped, which can increase the strength and rigidity of the first connector 6, making it less prone to deformation or breakage when bearing load. The arc-shaped design of the second connector 7 can effectively disperse and bear the stress generated by the hinge during rotation, avoiding connection failure caused by stress concentration, and further improving the high toughness performance of the hinge.

[0027] like Figures 1-5 As shown, the bottom end of the first hinge shaft 3 is provided with a rotating groove 8, and the second hinge shaft 4 is provided with an integral upwardly protruding rotating shaft 9. The rotating groove 8 is provided with a wear-resistant sleeve 10. One end of the wear-resistant sleeve 10 is tightly attached to the inner wall of the rotating groove 8, and the other end extends out of the rotating groove 8 and covers the edge of the groove opening of the rotating groove 8. The two ends of the wear-resistant sleeve 10 are provided with communicating sleeve openings. The rotating shaft 9, the wear-resistant sleeve 10 and the rotating groove 8 are fitted together to connect the upper hinge 1 and the lower hinge 2. The bottom end of the rotating groove 8 is rounded 11. The front side of both the upper hinge 1 and the lower hinge 2 is provided with several mounting holes 12. The front side of the lower hinge 2 is provided with an anti-pry hole 13. An elastic bushing 14 is fixed inside the anti-pry hole 13. An anti-pry nail 15 is fixed on the front side of the upper hinge 1. The anti-pry nail 15 passes through the elastic bushing 14.

[0028] During use, by adding a wear-resistant sleeve 10 to the outer edge of the rotating groove 8 and its opening, direct friction is prevented between the first hinge shaft 3 and the second hinge shaft 4, thus improving the overall service life of the hinge. The wear-resistant sleeve 10 is made of highly wear-resistant polytetrafluoroethylene composite material, which has a low coefficient of friction and good self-lubricating properties, effectively reducing the frictional resistance of the hinge during rotation and improving the smoothness of the hinge's rotation. At the same time, the second hinge shaft 4 and the rotating shaft 9 are integrated into one structure, resulting in better load-bearing capacity of the hinge. By changing the right angle at the bottom of the rotating groove 8 to a rounded corner 11, the stress concentration coefficient is reduced, reducing the risk of cracking at the bottom of the rotating groove 8 due to stress concentration, further improving the reliability and service life of the hinge. When the upper hinge 1 and the lower hinge 2 are closed, the anti-pry nail 15 passes through the elastic bushing 14 in the anti-pry hole 13, which can fix the upper hinge 1 and the lower hinge 2 when the first hinge shaft 3 and the second hinge shaft 4 are pried, preventing the door and window from being pried open. The elastic bushing 14 can effectively reduce the external impact force and avoid excessive damage to the hinge itself and the door and window structure.

[0029] like Figures 1-5 As shown, an oil injection hole 16 is provided on the front side of the first hinge shaft 3. The oil injection hole 16 is connected to the interior of the rotating groove 8, and a sealing plug 17 is interference-fitted inside the oil injection hole 16.

[0030] During use, the oil injection hole 16 allows operators to easily inject lubricating oil into the rotating groove 8. The lubricating oil fills the gaps between the rotating groove 8, the shaft 9, and the wear-resistant sleeve 10, reducing friction and wear, and improving the smoothness of hinge rotation. Simultaneously, the lubricating oil also cools and prevents rust, reducing the heat generated during hinge rotation and preventing rust from affecting rotational performance. The sealing plug 17 effectively prevents dust and other impurities from entering the rotating groove 8. Dust and moisture entering the rotating groove 8 may cause lubricating oil deterioration and rust on hinge components, thus affecting the hinge's rotational performance and service life. The sealing plug 17, made of rubber, has excellent sealing performance and can tightly fit the inner wall of the oil injection hole 16, preventing impurities from entering and effectively protecting the cleanliness and lubrication environment inside the rotating groove 8.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-toughness hinge, comprising an upper hinge (1), said upper hinge (1) being rotatably disposed on the right side of a lower hinge (2), characterized in that, A first hinge shaft (3) is fixed to the left side of the upper hinge (1), and a second hinge shaft (4) is fixed to the right side of the lower hinge (2). The second hinge shaft (4) is rotatably disposed below the first hinge shaft (3). Two reinforcing strips (5) are fixed to the front and rear sides of the upper hinge (1) and the lower hinge (2), respectively. The two reinforcing strips (5) on the upper hinge (1) are fixedly connected to the first hinge shaft (3), and the two reinforcing strips (5) on the lower hinge (2) are fixedly connected to the second hinge shaft (4). Several first connectors (6) are fixed on the two reinforcing strips (5). The first connectors (6) on the upper hinge (1) are fixedly connected to the first hinge shaft (3). The first connectors (6) on the lower hinge (2) are fixedly connected to the second hinge shaft (4). Several second connectors (7) are fixed on the front and rear sides of the upper hinge (1) and the lower hinge (2). Several second connectors (7) on the upper side are fixedly connected to the two reinforcing strips (5) on the upper side. Several second connectors (7) on the lower side are fixedly connected to the two reinforcing strips (5) on the lower side.

2. The high-toughness hinge according to claim 1, characterized in that: The inner sides of several reinforcing strips (5) and the first connecting member (6) are all arc-shaped and are adapted to the outer walls of the first hinge shaft (3) and the second hinge shaft (4) respectively. The outer sides of several first connecting members (6) are all arc-shaped, and the shapes of several second connecting members (7) are all arc-shaped.

3. A high-toughness hinge according to claim 2, characterized in that: The first hinge shaft (3) has a rotating groove (8) at its bottom end. The second hinge shaft (4) has an integral, upwardly protruding rotating shaft (9). The rotating groove (8) has a wear-resistant sleeve (10) inside. One end of the wear-resistant sleeve (10) is close to the inner wall of the rotating groove (8), and the other end extends out of the rotating groove (8) and covers the edge of the groove opening. The two ends of the wear-resistant sleeve (10) have communicating sleeve openings. The rotating shaft (9), the wear-resistant sleeve (10) and the rotating groove (8) are fitted together to connect the upper hinge (1) and the lower hinge (2). The bottom end of the rotating groove (8) is rounded (11).

4. A high-toughness hinge according to claim 3, characterized in that: The upper hinge (1) and the lower hinge (2) are provided with several mounting holes (12) on their front sides. The lower hinge (2) is provided with an anti-pry hole (13) on its front side. An elastic bushing (14) is fixed inside the anti-pry hole (13). An anti-pry nail (15) is fixed on the front side of the upper hinge (1). The anti-pry nail (15) passes through the elastic bushing (14).

5. A high-toughness hinge according to claim 1, characterized in that: The first hinge shaft (3) has an oil injection hole (16) on its front side, and the oil injection hole (16) is connected to the interior of the rotating groove (8).

6. A high-toughness hinge according to claim 5, characterized in that: The oil injection hole (16) is internally fitted with a sealing plug (17).

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