An easy-to-install single-axis concealed hinge

Abstract

This utility model relates to a single-axis concealed hinge that is easy to install, comprising a main shaft, a rotating arm, a rotating arm seat assembly, and an adjustable door panel. The rotating arm seat assembly includes a first rotating arm seat and a second rotating arm seat, which are rotatably mounted on both ends of the main shaft. The first end of the rotating arm is fixedly connected to the middle section of the main shaft, and the rotating arm does not contact the rotating arm seat assembly. An inner pressure plate is fixedly provided on the second end of the rotating arm, forming a receiving cavity between the inner pressure plate and the rotating arm. One end of the adjustable door panel is slidably fitted within the receiving cavity. A fastener is also provided on the second end of the rotating arm, passing through the rotating arm, the adjustable door panel, and the inner pressure plate in sequence to secure the adjustable door panel within the receiving cavity. This design enables rapid and precise assembly, improving the overall stability and load-bearing capacity of the structure.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, and in particular to a single-axis concealed hinge that is easy to install. Background Technology

[0002] Hinges are common connecting components used in building decoration and furniture manufacturing, mainly used to achieve rotational connections between door panels and door frames, cabinet bodies and cover plates, and other components. Depending on the application and installation method, there are many types of hinges. Among them, concealed hinges are widely used in modern home and office environments due to their hidden structure and aesthetic appeal.

[0003] Traditional single-axis concealed hinges typically consist of a base fixed to the door frame and a movable part connected to the door leaf, with the two connected by a pivot to achieve rotation. However, existing concealed hinges still present many inconveniences during actual installation. For example, the installation steps are cumbersome, adjustments are difficult, and high installation precision is required, resulting in low construction efficiency. Utility Model Content

[0004] The technical problem this invention aims to solve is to provide a single-axis concealed hinge that is easy to install, enabling rapid and precise assembly and improving the overall stability and load-bearing capacity of the structure. Through its split design and adjustable door panel structure, it allows for step-by-step installation and fine-tuning of position, significantly reducing installation difficulty and dependence on precision. Simultaneously, the combination of internal support rods, flanged copper sleeves, and gaskets enhances the hinge's rigidity, smooth rotation, and durability, making it suitable for door connection scenarios requiring both high strength and installation efficiency.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0006] A single-axis concealed hinge that is easy to install includes a main shaft, a rotating arm, a rotating arm seat assembly, and an adjustable door panel. The rotating arm seat assembly includes a first rotating arm seat and a second rotating arm seat, which are rotatably mounted on both ends of the main shaft. The first end of the rotating arm is fixedly connected to the middle section of the main shaft. The rotating arm does not contact the rotating arm seat assembly. An inner pressure plate is fixedly provided on the second end of the rotating arm. A receiving cavity is formed between the inner pressure plate and the rotating arm. One end of the adjustable door panel is slidably fitted into the receiving cavity. A fastener is also provided on the second end of the rotating arm. The fastener passes through the rotating arm, the adjustable door panel, and the inner pressure plate in sequence to secure the adjustable door panel in the receiving cavity.

[0007] This application, by incorporating independently installable swing arm assemblies (first and second swing arm assemblies) and an adjustable door leaf panel within the hinge, eliminates the need for simultaneous alignment of multiple components during installation, effectively reducing reliance on installation precision. Traditional concealed hinges require precise matching of the hinge points between the door frame and the door leaf, while this solution, through its modular structure, allows for step-by-step installation, improving installation flexibility.

[0008] The solution in this application includes an adjustable door panel with a sliding adjustment mechanism. This sliding fit allows for fine-tuning of the door panel's position after installation, based on actual conditions. For example, if a gap or positional deviation is found between the door panel and the door frame after installation, simply loosen the fasteners, adjust the position of the adjustable door panel within the receiving cavity, and then tighten them again. This significantly reduces the difficulty of adjustment and improves its flexibility and accuracy. Specifically, the fasteners pass sequentially through the rotating arm, the end of the adjustable door panel located within the receiving cavity, and the inner pressure plate. When the fasteners are tightened, the rotating arm and inner pressure plate are pressed inward, clamping the receiving cavity and thus reducing its size, thereby restricting the movement of the adjustable door panel and fixing it in place. When the fasteners are loosened, the rotating arm and inner pressure plate are no longer affected by the fasteners, allowing the receiving cavity to expand. At this point, pulling the adjustable door panel allows it to move and adjust its position.

[0009] Preferably, the adjustable door panel includes a door panel connecting plate and an adjusting plate, which are fixedly connected to each other. The adjusting plate slides within the receiving cavity. The adjusting plate has an adjusting hole, the size of which is larger than the size of the fastener, through which the fastener passes. The adjusting hole can be designed as a square hole, with the top, bottom, left, and right edges of the square hole 2mm away from the fastener after center alignment. This allows the adjusting plate to slide freely along the adjusting hole within a certain range when the fastener is loose, enabling flexible fine-tuning of the door panel position. This structure improves adjustment accuracy and ease of operation. Compared to traditional hinges that require perfect alignment of the holes for installation, this design allows for a certain degree of deviation, reducing installation difficulty.

[0010] Preferably, the adjustment hole includes a notch and a through hole. Two notches are provided, each located at one end of the adjustment plate. The notch size is larger than the fastener size. Multiple through holes are spaced apart and located between two notches. Multiple fasteners are provided, each corresponding to one of the notches and through holes. This design, with notches at both ends of the adjustment plate and notches larger than the fastener size, provides greater flexibility during adjustment, effectively increasing the adjustment range of the adjustable door panel. Furthermore, when the adjustable door panel needs to be disassembled or replaced, it is not necessary to completely loosen and remove the fasteners at the notches; simply moving the adjustment plate along the notch direction achieves quick separation, significantly improving disassembly and assembly efficiency and simplifying maintenance.

[0011] Meanwhile, multiple through holes are provided between the two notched holes. When the fasteners are not completely removed (or not fully tightened), the fasteners in these through holes can only slide within the holes and cannot detach from the adjusting plate. This provides a certain degree of limitation and anti-detachment protection for the adjustable door panel. When all fasteners are loosened but still within the through holes, this design effectively prevents the adjustable door panel from accidentally falling out of the receiving cavity, thereby improving the overall structural safety and reliability.

[0012] Preferably, the second end of the rotating arm is provided with multiple guide holes, and the inner pressure plate is provided with multiple positioning holes. The guide holes and positioning holes are coaxial, and the guide holes, positioning holes, and adjustment holes correspond one-to-one. The positioning holes are threaded holes, and the fasteners are bolts. In this way, when the bolt is screwed into the threaded hole, the bolt causes the second end of the rotating arm to move closer to the inner pressure plate, reducing the accommodating cavity. This allows the rotating arm and the inner pressure plate to clamp the adjustable door panel together, fixing it in place. When the bolt is loosened, the accommodating cavity expands, allowing the adjustable door panel to slide freely within the adjustment hole range, achieving fine-tuning of its position.

[0013] Preferably, the system further includes two flanged copper sleeves, which are respectively fixedly installed in the first and second rotating arm seats. The flanged copper sleeves are coaxial with the main shaft, and a polytetrafluoroethylene (PTFE) coating is sintered onto their surfaces. The flanged portion of the flanged copper sleeve contacts the main shaft. In this way, by having the flanged portion of the flanged copper sleeve contact the main shaft and by sintering a PTFE coating onto the surface of the flanged copper sleeve, the coefficient of friction between the main shaft and the rotating arm seat is effectively reduced, improving the smoothness and durability of rotation. Simultaneously, it possesses good self-lubricating properties, reducing wear and maintenance requirements during daily use.

[0014] Preferably, the device further includes two gaskets, each rotatably fitted onto one end of the main shaft and positioned between the main shaft and the swing arm assembly. This allows the gaskets to remain relatively stationary or move along with the main shaft during rotation, further reducing frictional resistance between the main shaft and the swing arm assembly, improving the smoothness and stability of rotation. Simultaneously, the gaskets also provide excellent cushioning, dispersing axial stress during door opening and closing, reducing wear on the main shaft connection, and effectively preventing door sagging caused by hinge wear or loosening, thus extending the hinge's lifespan.

[0015] Preferably, an inner support rod is provided between the first and second hinge seats, and the two ends of the inner support rod are fixedly connected to the first and second hinge seats respectively. This arrangement allows the first and second hinge seats to bear forces synchronously, effectively enhancing the overall rigidity and deformation resistance of the hinge seat assembly, and improving the stability and load-bearing capacity of the entire hinge structure under stress.

[0016] Preferably, both the adjusting plate and the inner pressure plate are provided with anti-slip teeth. This design, when the fasteners are locked, enhances the friction between the adjustable door panel and the rotating arm assembly (rotating arm and inner pressure plate) through the interlocking of the anti-slip teeth, effectively preventing loosening and displacement caused by external vibration or frequent opening and closing, and significantly improving the stability and positioning accuracy of the connection parts.

[0017] Preferably, the door panel connecting plate is provided with multiple mounting holes. This allows for flexible selection of suitable mounting positions based on different door panel thicknesses and installation requirements.

[0018] Preferably, the main shaft is an integrated structure. This improves the rigidity and strength of the main shaft, ensures the concentricity of the main shaft as a whole, and guarantees the smooth rotation and reliable operation of the door during opening and closing.

[0019] In summary, this easy-to-install single-axis concealed hinge enables rapid and precise assembly, enhancing the overall structural stability and load-bearing capacity. Its modular design and adjustable door panel structure allow for step-by-step installation and fine-tuning, significantly reducing installation difficulty and reliance on precision. Furthermore, the combination of internal support rods, flanged copper sleeves, and gaskets enhances the hinge's rigidity, smooth rotation, and durability, making it suitable for door connection scenarios requiring both high strength and installation efficiency. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0021] Figure 1 This is a schematic diagram of the structure of the easy-to-install single-axis concealed hinge described in this utility model;

[0022] Figure 2 This is a schematic diagram of the main shaft, rotating arm, and inner pressure plate in the easy-to-install single-axis concealed hinge described in this utility model. Figure 1 ;

[0023] Figure 3 This is a schematic diagram of the main shaft, rotating arm, and inner pressure plate in the easy-to-install single-axis concealed hinge described in this utility model. Figure 2 ;

[0024] Figure 4This is a schematic diagram of the adjustable door panel in the easy-to-install single-axis concealed hinge of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the easy-to-install single-axis concealed hinge rotating arm seat assembly of this utility model;

[0026] Figure 6 This is a partial cross-sectional view of the easy-to-install single-axis concealed hinge rotating arm seat assembly of this utility model;

[0027] Figure 7 This is a partial structural diagram of the main shaft, flanged copper sleeve, and gasket in the easy-to-install single-axis concealed hinge of this utility model.

[0028] in:

[0029] 1-Spindle;

[0030] 2-Rotating arm; 21-Guide hole;

[0031] 3-Swing arm seat assembly; 31-First swing arm seat; 32-Second swing arm seat; 33-Inner support rod;

[0032] 4-Adjustable door panel; 41-Door panel connecting plate; 411-Mounting hole; 42-Adjusting plate; 43-Adjusting hole; 431-Notch hole; 432-Through hole;

[0033] 5-Inner pressure plate; 51-Positioning hole;

[0034] 6-Cavity;

[0035] 7-Fasteners;

[0036] 8-Flanged copper bushing;

[0037] 9-Gasket;

[0038] 10-Anti-slip teeth. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0040] In the description of this utility model, it should be understood that the orientation and positional relationship indicated by terms such as "up", "down", "left", "right", "front", "back", "vertical", "bottom", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0041] Reference Figures 1-5 As shown, a single-axis concealed hinge that is easy to install includes a main shaft 1, a rotating arm 2, a rotating arm seat assembly 3, and an adjustable door panel 4. The rotating arm seat assembly 3 includes a first rotating arm seat 31 and a second rotating arm seat 32, which are rotatably mounted on both ends of the main shaft 1. The first end of the rotating arm 2 is fixedly connected to the middle section of the main shaft 1. The rotating arm 2 does not contact the rotating arm seat assembly 3. An inner pressure plate 5 is fixedly provided on the second end of the rotating arm 2. A receiving cavity 6 is formed between the inner pressure plate 5 and the rotating arm 2. One end of the adjustable door panel 4 is slidably fitted in the receiving cavity 6. A fastener 7 is also provided on the second end of the rotating arm 2. The fastener 7 passes through the rotating arm 2, the adjustable door panel 4, and the inner pressure plate 5 in sequence to fasten the adjustable door panel 4 in the receiving cavity 6.

[0042] This application, by incorporating independently installable swing arm bracket assemblies 3 (first and second swing arm brackets) and adjustable door leaf panels 4 within the hinge, eliminates the need for simultaneous alignment of multiple components during installation, effectively reducing reliance on installation precision. Traditional concealed hinges require precise matching of the hinge points between the door frame and the door leaf, while this solution, through its split structure, allows for step-by-step installation, improving installation flexibility.

[0043] The solution in this application includes an adjustable door panel 4 with a sliding adjustment mechanism. This sliding fit allows the door panel to be finely adjusted in position after installation, based on actual conditions. For example, if a gap or positional deviation is found between the door panel and the door frame after installation, simply loosen the fastener 7, adjust the position of the adjustable door panel 4 within the receiving cavity 6, and then tighten it again. This greatly reduces the difficulty of adjustment and improves the flexibility and accuracy of adjustment. Specifically, the fastener 7 passes sequentially through the rotating arm 2, the end of the adjustable door panel 4 located within the receiving cavity, and the inner pressure plate 5. When the fastener 7 is tightened, the rotating arm 2 and the inner pressure plate 5 are pressed inward, clamping the receiving cavity and thus reducing its size, thereby restricting the movement of the adjustable door panel 4 and fixing it in place. When the fastener 7 is loosened, the rotating arm 2 and the inner pressure plate 5 are no longer affected by the fastener 7, allowing the receiving cavity to expand. At this point, pulling the adjustable door panel 4 allows it to move and adjust its position.

[0044] Furthermore, refer to Figure 4As shown, the adjustable door panel 4 includes a door panel connecting plate 41 and an adjusting plate 42. The door panel connecting plate 41 and the adjusting plate 42 are fixedly connected to each other. The adjusting plate 42 is slidably fitted with the receiving cavity 6. The adjusting plate 42 is provided with an adjusting hole 43, the size of which is larger than the size of the fastener 7. The fastener 7 passes through the adjusting hole 43. The adjusting hole 43 can be designed as a square hole. After the square hole is aligned with the fastener 7, the distance between the top, bottom, left, and right edges of the square hole and the fastener 7 is 2mm. In this way, when the fastener 7 is loosened, the adjusting plate 42 can slide freely along the adjusting hole 43 within a certain range, thereby achieving flexible fine-tuning of the door panel position. This structure improves the adjustment accuracy and ease of operation. Compared with traditional hinges that must be perfectly aligned with the holes for installation, this design allows for a certain deviation, reducing the installation difficulty.

[0045] The adjustment hole 43 includes a notched hole 431 and a through hole 432. Two notched holes 431 are provided, located at both ends of the adjustment plate 42, with the notch size larger than the fastener 7. Multiple through holes 432 are spaced apart and located between two notched holes 431. Multiple fasteners 7 are provided, each corresponding to one of the notched holes 431 and through holes 432. The through hole 432 refers to a closed hole without a notch. By providing notched holes 431 at both ends of the adjustment plate 42, with the notch size larger than the fastener 7, the adjustment plate 42 has greater movement space during adjustment, effectively increasing the adjustment range of the adjustable door panel 4. Furthermore, when the adjustable door panel 4 needs to be disassembled or replaced, it is not necessary to completely loosen and remove the fastener 7 at the notched hole 431; simply moving the adjustment plate 42 along the notch direction achieves quick separation, significantly improving disassembly and assembly efficiency and simplifying maintenance operations.

[0046] Meanwhile, multiple through holes 432 are provided between the two notches 431. When the fasteners 7 are not completely removed (or not fully tightened), the fasteners 7 in these through holes 432 can only slide within the holes and cannot disengage from the adjusting plate 42. This provides a certain degree of limiting and anti-disengagement protection for the adjustable door panel 4. When all the fasteners 7 are loosened but still within the through holes 432, this design can effectively prevent the adjustable door panel 4 from accidentally falling out of the receiving cavity 6, thereby improving the safety and reliability of the overall structure.

[0047] Furthermore, refer to Figure 2 and Figure 3As shown, the second end of the rotating arm 2 is provided with multiple guide holes 21, and the inner pressure plate 5 is provided with multiple positioning holes 51. The guide holes 21 and the positioning holes 51 are coaxial, and the guide holes 21, positioning holes 51 and adjustment holes 43 correspond one-to-one. Among them, the positioning holes 51 are threaded holes, and the fasteners 7 are bolts. In this way, when the bolt is screwed into the threaded hole, the bolt will cause the second end of the rotating arm 2 to move closer to the inner pressure plate 5, thereby reducing the accommodating cavity 6, and thus realizing that the rotating arm 2 and the inner pressure plate 5 together clamp the adjustable door leaf plate 4, fixing it. When the bolt is loosened, the accommodating cavity 6 can be expanded. At this time, pulling the adjustable door leaf plate 4 will allow it to slide freely within the range of the adjustment holes 43, realizing fine-tuning of the position.

[0048] Furthermore, refer to Figure 5 , Figure 6 and Figure 7 As shown, it also includes a flanged copper sleeve 8. Two flanged copper sleeves 8 are provided, and the two flanged copper sleeves 8 are respectively fixedly installed in the first rotating arm seat 31 and the second rotating arm seat 32. The flanged copper sleeves 8 are coaxial with the main shaft 1, and the surface of the flanged copper sleeves 8 is sintered with a polytetrafluoroethylene coating. The flanged part of the flanged copper sleeve 8 is in contact with the main shaft 1. In this way, by having the flanged part of the flanged copper sleeve 8 in contact with the main shaft 1 and by sintering the polytetrafluoroethylene coating on the surface of the flanged copper sleeve 8, the coefficient of friction between the main shaft 1 and the rotating arm seat 2 is effectively reduced, improving the smoothness and durability of rotation. At the same time, it has good self-lubricating properties, reducing wear and maintenance requirements in daily use, and achieving an oil-free and silent effect.

[0049] Furthermore, refer to Figure 2 and Figure 7 As shown, it also includes two gaskets 9, which are rotatably fitted onto both ends of the main shaft 1 and located between the main shaft 1 and the rotating arm seat assembly 3. One side of the gasket 9 is in contact with the flange of the flanged copper sleeve 8. In this way, the gasket 9 can remain relatively stationary or follow the rotation of the main shaft 1, further reducing the frictional resistance between the main shaft 1 and the rotating arm seat assembly 3, improving the smoothness and stability of rotation. At the same time, the gasket 9 also has good cushioning performance, which can disperse axial stress during the opening and closing of the door leaf, reduce the wear of the connection part of the main shaft 1, and thus effectively avoid the door leaf sagging caused by hinge wear or loosening, extending the service life of the hinge.

[0050] Furthermore, refer to Figure 5 As shown, an inner support rod 33 is provided between the first hinge seat 31 and the second hinge seat 32, with both ends of the inner support rod 33 fixedly connected to the first hinge seat 31 and the second hinge seat 32, respectively. This arrangement allows the first hinge seat 31 and the second hinge seat 32 to bear forces synchronously. This structure effectively enhances the overall rigidity and deformation resistance of the hinge seat assembly 3, and improves the stability and load-bearing performance of the entire hinge structure under stress.

[0051] Furthermore, refer to Figure 4 As shown, both the adjusting plate 42 and the inner pressure plate 5 are equipped with anti-slip teeth 10. This design, when the fastener 7 is locked, enhances the friction between the adjustable door panel 4 and the rotating arm 2 assembly (rotating arm 2 and inner pressure plate 5) through the interlocking of the anti-slip teeth 10, effectively preventing loosening and displacement caused by external vibration or frequent opening and closing, and significantly improving the stability and positioning accuracy of the connection parts.

[0052] Furthermore, refer to Figure 1 As shown, the door panel connecting plate 41 is provided with multiple mounting holes 411. This allows for flexible selection of suitable mounting positions based on the thickness of different door panels and installation requirements.

[0053] Furthermore, the main shaft 1 is an integrated structure. This not only improves the rigidity and strength of the main shaft 1, but also ensures the concentricity of the main shaft 1 as a whole, thus ensuring the smooth rotation and reliable operation of the door during opening and closing.

[0054] In addition, a plastic box is provided, with both ends of the plastic box connected to both ends of the main shaft 1, and the main shaft 1 is located inside the plastic box. This achieves dust and mud protection during the installation and use of the hinge.

[0055] In summary, this easy-to-install single-axis concealed hinge enables rapid and precise assembly, enhancing the overall structural stability and load-bearing capacity. Its split design and adjustable door panel 4 structure allow for step-by-step installation and fine-tuning, significantly reducing installation difficulty and reliance on precision. Furthermore, the combination of internal support rods 33, flanged copper sleeves 8, and washers 9 enhances the hinge's rigidity, smooth rotation, and durability, making it suitable for door connection scenarios requiring both high strength and installation efficiency.

[0056] In summary, the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A single axis concealed hinge for easy installation, characterized in that, The device includes a main shaft, a rotating arm, a rotating arm seat assembly, and an adjustable door panel. The rotating arm seat assembly includes a first rotating arm seat and a second rotating arm seat, which are rotatably mounted on both ends of the main shaft. The first end of the rotating arm is fixedly connected to the middle section of the main shaft. The rotating arm does not contact the rotating arm seat assembly. An inner pressure plate is fixedly provided on the second end of the rotating arm, and a receiving cavity is formed between the inner pressure plate and the rotating arm. One end of the adjustable door panel is slidably fitted into the receiving cavity. A fastener is also provided on the second end of the rotating arm. The fastener passes through the rotating arm, the adjustable door panel, and the inner pressure plate in sequence to secure the adjustable door panel in the receiving cavity.

2. The single axis concealed hinge for easy installation according to claim 1, characterized in that, The adjustable door panel includes a door panel connecting plate and an adjusting plate. The door panel connecting plate and the adjusting plate are fixedly connected to each other. The adjusting plate is slidably fitted with the accommodating cavity. The adjusting plate is provided with an adjusting hole. The size of the adjusting hole is larger than the size of the fastener. The fastener passes through the adjusting hole.

3. The single axis concealed hinge for easy installation according to claim 2, characterized in that, The adjustment hole includes a notch and a through hole. There are two notches located at both ends of the adjustment plate. The notch size is larger than the fastener size. There are multiple through holes spaced apart and located between the two notches. There are multiple fasteners, each corresponding to one of the notches and through holes.

4. The single axis concealed hinge for easy installation according to claim 3, characterized in that, The second end of the rotating arm is provided with multiple guide holes, and the inner pressure plate is provided with multiple positioning holes. The guide holes and positioning holes are coaxial, and the guide holes, positioning holes and adjustment holes correspond to each other one by one.

5. The single axis concealed hinge for easy installation according to claim 1, characterized in that, It also includes a flanged copper sleeve, of which two are provided. The two flanged copper sleeves are respectively fixedly installed in the first rotating arm seat and the second rotating arm seat. The flanged copper sleeve is coaxial with the main shaft. The surface of the flanged copper sleeve is sintered with a polytetrafluoroethylene coating. The flanged part of the flanged copper sleeve is in contact with the main shaft.

6. The single axis concealed hinge for easy installation according to claim 5, characterized in that, It also includes gaskets, of which two are provided, and the two gaskets are respectively rotatably sleeved on both ends of the main shaft and located between the main shaft and the swivel arm assembly.

7. The single axis concealed hinge for easy installation according to claim 1, characterized in that, An inner support rod is provided between the first and second swing arm seats, and the two ends of the inner support rod are fixedly connected to the first and second swing arm seats respectively.

8. The single axis concealed hinge for easy installation according to claim 4, characterized in that, Both the adjusting plate and the inner pressure plate are equipped with anti-slip teeth.

9. The single axis concealed hinge for easy installation according to claim 8, characterized in that, The door panel connecting plate is provided with multiple mounting holes.

10. The single axis concealed hinge for easy installation according to claim 9, characterized in that, The spindle is an integrated structure.

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