Malus spectabilis angle hinge

Abstract

The invention relates to the technical field of hardware fittings, in particular to a crabapple angle hinge which comprises a fixed seat fixed to the side of a cabinet body and a movable seat fixedly installed on the side of a door plank, a main hinge arm is installed on the fixed seat in a hinged mode through a first pin shaft, and the other end of the main hinge arm is connected with a first sliding block. The first sliding block slides in a first sliding groove in the movable base. A receding groove is formed in the middle of the main hinge arm in a hollowed-out mode, the receding groove is hinged to the middle of the auxiliary hinge arm through a second pin shaft, one end of the auxiliary hinge arm is hinged to the movable base through a third hinge shaft, the other end of the auxiliary hinge arm is hinged to a second sliding block, and the second sliding block slides in a second sliding groove in the fixed base. The main hinge arm and the auxiliary hinge arm swing relative to the fixed base and the movable base, and opening and closing of the hinge are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of hardware hinges, and in particular to a quoin hinge. Background Art

[0002] A hinge is a key functional component in modern furniture, especially in cabinet furniture such as cabinets, wardrobes, and bookcases, to achieve the connection and relative rotation between the door panel and the cabinet body. It not only undertakes the basic functions of supporting the weight of the door panel and enabling the smooth opening and closing of the door panel, but with the development of technology and the improvement of user requirements, modern hinges often also integrate additional functions such as buffered closing and automatic reset to improve the convenience and comfort of use. As a common furniture hinge, the quoin hinge is widely used in specific types of cabinet door designs due to its structural characteristics and installation methods.

[0003] In order to achieve the automatic closing of the cabinet door or provide a certain suction force at the end of closing to ensure that the door panel can be tightly closed and maintained in the closed state, the commonly adopted solution in the prior art is to set a reset mechanism in the hinge structure. Currently, the most common reset mechanism is to utilize spring elements, such as setting a tension spring, a compression spring or a torsion spring between the movable arms of the hinge or between the movable arm and the fixed seat / movable seat. When the cabinet door is opened, the spring is stretched, compressed or twisted to store elastic potential energy; when the cabinet door is closed to a certain angle, the spring releases the stored energy, generates a restoring force, drives the relevant components of the hinge to move, and thus drives the door panel to close or suck automatically.

[0004] However, the existing hinge technology solutions using springs as reset elements have the following significant disadvantages: 1. During the working process of the spring, whether it is stretched, compressed or twisted, it or its connection end inevitably needs to come into contact, slide or rub against other metal or plastic components of the hinge, such as hinge arms, sliders, pins or housings. This relative movement and friction, especially when the spring is deformed under force and rebounds rapidly, easily generates unpleasant noises such as "creaking" or rattling. As the use time increases, after component wear or lubrication failure, the noise problem tends to be more serious, greatly affecting the user experience and reducing the quality feeling of household products.

[0005] 2. As a typical elastic metal component, the spring will inevitably undergo metal fatigue after long-term repeated loading and unloading cycles, that is, the repeated opening and closing of the cabinet door. Metal fatigue will cause changes in the microstructure of the spring material, which macroscopically manifests as a gradual decline in its elastic performance, that is, the elastic force will gradually weaken with the increase in the number of uses and the passage of time. The attenuation of the elastic force will directly lead to insufficient automatic closing force of the hinge, and there may be problems such as the cabinet door not being able to be fully sucked in place, the closing speed becoming slower or the "false closing" phenomenon, affecting the reliable realization of the preset functions of the hinge.

[0006] 3. The accumulation of metal fatigue not only leads to the attenuation of elasticity, but when the fatigue damage reaches a certain level, it may also cause brittle fracture of the spring. Once the spring breaks, the automatic reset function of the hinge will completely fail, and it may even affect the normal opening and closing of the hinge because the broken spring jams other components. The fatigue life of the spring directly limits the effective service life of the entire hinge, increasing the maintenance cost and replacement frequency of the user. Especially in occasions with high-frequency use such as kitchen cabinets, this problem is particularly prominent. Therefore, it is necessary to make further improvements to it. Summary of the Invention

[0007] The object of the present invention is to overcome the shortcomings of the existing technology and provide a Begonia corner hinge with a simple structure, convenient use, quieter operation, more stable performance, and longer service life.

[0008] The object of the present invention is achieved in the following way: A Begonia corner hinge includes a fixed seat fixed on the side of the cabinet body and a movable seat fixedly installed on the side of the door panel. A main hinge arm is hingedly installed on the fixed seat through a first pin shaft. The other end of the main hinge arm is connected with a first sliding block, and the first sliding block slides in a first chute inside the movable seat. A clearance groove is hollowly arranged in the middle of the main hinge arm. The clearance groove is hinged with the middle part of the sub-hinge arm through a second pin shaft. One end of the sub-hinge arm is hinged with the movable seat through a third hinge shaft, and the other end of the sub-hinge arm is hinged with a second sliding block. The second sliding block slides in a second chute inside the fixed seat. The main hinge arm and the sub-hinge arm swing relative to the fixed seat and the movable seat to realize the opening and closing of the hinge. A damper is arranged between the first sliding block and the movable seat. The damper slows down the movement speed of the first sliding block and plays a buffering role when the hinge is closed. An active magnet is arranged on the first sliding block, and a fixed magnet is arranged on the movable seat. When the hinge is closed, the first sliding block pushes the active magnet to move towards the fixed magnet, and the active magnet and the fixed magnet attract each other, driving the hinge to automatically reset and close through the main hinge arm.

[0009] Further: The first chute is a through groove horizontally arranged inside the movable seat, and the main hinge arm and the first sliding block are hinged through a fourth pin shaft.

[0010] Further: First guiding grooves are concavely arranged on the upper and lower sides of the first chute, and first wear-resistant blocks are installed at the upper and lower ends of the first sliding block and extend into the first guiding grooves to slide.

[0011] Further: The second chute is a through groove horizontally arranged inside the fixed seat, and the sub-hinge arm and the second sliding block are hinged through a fifth pin shaft.

[0012] Further: The second sliding blocks are arranged at the upper and lower ends of the sub-hinge arm.

[0013] Further: The fixed magnet is arranged at the tail of the first chute and is installed towards the direction of the first sliding block; the movable magnet is installed at the end of the first sliding block and is arranged towards the fixed magnet.

[0014] Further: Both the movable magnet and the fixed magnet are permanent magnets.

[0015] Further: The damper is a compression damping type hydraulic damping cylinder, which is installed on the end face of the first sliding block. The first sliding block drives the damper to squeeze with the movable seat, generating a closing damping force.

[0016] Further: The fixed seat is covered with a vertical adjustment seat. A vertical limit area is arranged inside the vertical adjustment seat, and the vertical adjustment seat is installed in the vertical limit area through a vertical guide shaft; A vertical adjustment eccentric wheel is rotatably installed on the vertical adjustment seat. Correspondingly, a vertical adjustment groove is arranged inside the fixed seat, and the vertical adjustment eccentric wheel is installed to rotate in the vertical adjustment groove, pushing the fixed seat to perform a vertical displacement relative to the vertical adjustment seat.

[0017] Further: The vertical adjustment seat is covered with a horizontal adjustment seat. A horizontal limit groove is arranged inside the horizontal adjustment seat, and the vertical adjustment seat is sleeved in the horizontal limit groove; A horizontal adjustment eccentric wheel is rotatably installed on the horizontal adjustment seat. Correspondingly, a horizontal adjustment groove is arranged inside the vertical adjustment seat, and the horizontal adjustment eccentric wheel is installed to rotate in the horizontal adjustment groove, pushing the vertical adjustment seat to perform a horizontal displacement in the horizontal limit groove.

[0018] The beneficial effects of the present invention are: 1. The structure is simple, the production cost is low, and the market competitiveness is improved.

[0019] 2. The present invention uses the mutual attraction between the movable magnet and the fixed magnet to realize the automatic reset and closing of the hinge. The attraction force between the magnets is a non-contact force or only has a slight contact during the final attraction, completely avoiding the friction, scratching or bouncing generated by the spring and other components due to stretching, compression or torsion in the prior art, thus fundamentally eliminating the common "creaking" sound or rattling noise of the spring reset mechanism. This makes the cabinet door more stable and quiet during the closing process, significantly improving the quality sense of furniture products and the user's use comfort.

[0020] 3. The magnetic force of the magnet hardly decays in the normal use environment and service life cycle, and there is no problem of metal fatigue similar to that of a spring. This means that the automatic closing force of the hinge of the present invention can be kept stable and consistent for a long time, ensuring that the cabinet door can be reliably closed in place and kept in a tight state every time, avoiding the problems of not being able to close tightly or the attraction force decreasing due to the weakening of the spring force, and ensuring the lasting effectiveness of the hinge function.

[0021] 4. Since the spring element that is prone to fatigue and fracture is eliminated and replaced by a magnet with stable performance, the overall structure of the hinge of the present invention is more stable and durable, greatly extending the effective service life of the hinge. The maintenance or replacement frequency caused by spring failure is reduced, and the reliability and durability of the furniture are improved.

[0022] 5. The movable magnet is installed on the first sliding block, and the first sliding block slides in the first chute inside the movable seat; the fixed magnet is arranged on the movable seat, which makes both the movable magnet 61 and the fixed magnet be cleverly hidden or accommodated in the internal space of the movable seat, and their magnetic force acting surfaces are not directly exposed to the external environment of the hinge. The risk of the magnet adsorbing iron filings, screws, metal dust or other ferromagnetic foreign matters existing in the external environment during use or installation is greatly reduced.

[0023] 6. It can provide a buffering effect in the final stroke of the hinge closing, and cooperate with the automatic closing force of magnetic attraction to realize the gentle closing of the cabinet door first quickly and then slowly, further enhancing the comfort and safety of use. Description of the Drawings

[0024] Figure 1 It is an effect diagram of the door panel in the open state after the present invention is installed with the cabinet body and the door panel.

[0025] Figure 2 It is an effect diagram of the door panel in the closed state after the present invention is installed with the cabinet body and the door panel.

[0026] Figure 3 、 4 It is an effect diagram of the structure of the present invention in the open state.

[0027] Figure 5 It is an effect diagram of the structure of the present invention in the 45° open state.

[0028] Figure 6 It is a cross-sectional view of the structure of the present invention in the 45° open state.

[0029] Figure 7 、 8 It is an effect diagram of the structure of the present invention in the closed state.

[0030] Figure 9 It is a cross-sectional view of the structure of the present invention in the closed state.

[0031] Figure 10 、 11 It is an exploded view of the structure of the present invention.

[0032] Figure 12 It is an effect diagram of the assembly of the main hinge arm and the sub-hinge arm in the present invention. Detailed Description of the Invention

[0033] The present invention will be further described in detail below with reference to the accompanying drawings. A begonia corner hinge includes a fixed seat 2 fixed to the side of a cabinet body 1 and a movable seat 4 fixedly installed on the side of a door panel 3. A main hinge arm 5 is hingedly installed on the fixed seat 2 through a first pin shaft 21. The other end of the main hinge arm 5 is connected with a first sliding block 6. The first sliding block 6 slides in a first sliding groove 41 inside the movable seat 4. A clearance groove 51 is provided in a hollow manner in the middle of the main hinge arm 5. The clearance groove 51 is hinged to the middle of a secondary hinge arm 7 through a second pin shaft 52. One end of the secondary hinge arm 7 is hinged to the movable seat 4 through a third hinge shaft 71. The other end of the secondary hinge arm 7 is hinged to a second sliding block 8. The second sliding block 8 slides in a second sliding groove 22 inside the fixed seat 2. The main hinge arm 5 and the secondary hinge arm 7 swing relative to the fixed seat 2 and the movable seat 4 to realize the opening and closing of the hinge. A damper 9 is provided between the first sliding block 6 and the movable seat 4. The damper 9 slows down the movement speed of the first sliding block 6, playing a buffering role when the hinge is closed. An active magnet 61 is provided on the first sliding block 6, and a fixed magnet 42 is provided on the movable seat 4. When the hinge is closed, the first sliding block 6 pushes the active magnet 61 to move towards the fixed magnet 42. The active magnet 61 and the fixed magnet 42 attract each other, and the hinge is driven by the main hinge arm 5 to automatically reset and close.

[0034] In this embodiment, the fixed seat 2 and the movable seat 4 are respectively connected to the cabinet body and the door panel. One end of the main hinge arm 5 is hinged to the fixed seat 2 so that it rotates around the first pin shaft 21, and the other end is connected with a first sliding block 6 that can slide in the first sliding groove 41 of the movable seat 4. One end of the secondary hinge arm 7 is hinged to the movable seat 4 so that it rotates around the third hinge shaft 71, and the other end is connected with a second sliding block 8 that can slide in the second sliding groove 22 of the fixed seat 2. The main hinge arm 5 and the secondary hinge arm 7 are hinged to each other in the middle through a second pin shaft 52. When the door panel 3 is opened or closed relative to the cabinet body 1, the movable seat 4 moves relative to the fixed seat 2, driving the main hinge arm 5 and the secondary hinge arm 7 to swing around their respective fixed hinge points and the mutual hinge point. At the same time, the first sliding block 6 and the second sliding block 8 slide in the first sliding groove 41 and the second sliding groove 22 respectively. This linkage mechanism enables the door panel to open and close along a specific trajectory (the characteristics of the begonia corner hinge).

[0035] It should be noted that during the closing process, the first sliding block 6 moves in the first sliding groove 41. The damper 9 provided between the first sliding block 6 and the movable seat 4 is triggered, causing resistance to the movement of the first sliding block 6 at the end stage of closing the hinge, thereby slowing down its speed and further slowing down the closing speed of the entire hinge to achieve a buffering effect.

[0036] It should be noted that when the hinge is close to the fully closed state, the movement of the first sliding block 6 causes the movable magnet 61 carried thereon to approach the fixed magnet 42 provided on the movable seat 4. Due to the mutual attraction between the two, a pulling force is generated, which is transmitted to the main hinge arm 5 through the first sliding block 6, thereby driving the entire hinge mechanism to complete the final closing action and keeping the door panel in the closed position, realizing automatic reset and suction.

[0037] Compared with the traditional technology, the unique hinged manner of the main hinge arm, sub-hinge arm, fixed seat and movable seat in this case enables it to meet the requirements of the begonia angle usage scenario. In addition, the damper 9 realizes a smooth and quiet soft closing, avoiding the noise and possible damage caused by the door panel hitting the cabinet body, and improving the use comfort and safety. At the same time, using magnets to replace the traditional spring to achieve automatic reset closing overcomes the problems of the spring being prone to generate noise, the elastic force decaying and breaking due to metal fatigue, making the hinge run more quietly, the closing force more durable and stable, and the service life longer.

[0038] In one embodiment, the first chute 41 is a through groove horizontally arranged in the movable seat 4, and the main hinge arm 5 and the first sliding block 6 are hinged through a fourth hinge shaft 62. Among them, the first chute 41 is a horizontally arranged through groove, which makes the movement path of the first sliding block 6 a linear movement along the horizontal direction of the movable seat 4. This ensures that when the main hinge arm 5 swings, its end can freely rotate relative to the first sliding block 6 moving in a straight line to adapt to the geometric movement of the linkage mechanism.

[0039] In one embodiment, first guide grooves 43 are concavely arranged on the upper and lower sides of the first chute 41, and first wear-resistant blocks 63 are installed at the upper and lower ends of the first sliding block 6 and extend into the first guide grooves 43 to slide. In this embodiment, a guiding structure is added to the cooperation between the first chute 41 and the first sliding block 6. First guide grooves are opened on the upper and lower inner walls of the first chute 41, and corresponding positions of the first sliding block 6 are provided with first wear-resistant blocks 63 that can extend into the guide grooves. When the first sliding block 6 slides in the first chute 41, the wear-resistant blocks move in the guide grooves, playing an accurate guiding role, restricting the sliding direction of the sliding block and avoiding shaking.

[0040] Among them, the wear-resistant blocks are usually made of self-lubricating or low-friction coefficient materials, reducing the sliding resistance, protecting the movable seat 4 and the sliding block body, and prolonging the service life of the sliding mechanism.

[0041] In one embodiment: the second chute 22 is a through groove horizontally arranged in the fixed seat 2, and the sub-hinge arm 7 and the second sliding block 8 are hinged through a fifth hinge shaft 81.

[0042] In one embodiment, the second sliding block 8 is arranged at the upper and lower ends of the secondary hinge arm 7. The second sliding block 8 is also made of wear-resistant material and slides within the second chute 22.

[0043] In one embodiment, the fixed magnet 42 is arranged at the tail of the first chute 41 and is installed in the direction towards the first sliding block 6; the movable magnet 61 is installed at the end of the first sliding block 6 and is arranged towards the fixed magnet 42.

[0044] In this embodiment, the relative installation positions of the two magnets. The fixed magnet 42 is located at the tail of the first chute 41, that is, the end position where the first sliding block 6 moves to when the hinge is closed. The movable magnet 61 is located at one end of the first sliding block 6 towards the tail of the chute. Such an arrangement enables the movable magnet 61 to be very close to the fixed magnet 42 when the hinge is about to be completely closed and the first sliding block 6 moves close to the tail of the chute. At this time, the magnetic suction force is the strongest, which can effectively "pull" the hinge into place and keep it closed.

[0045] In this embodiment, the precise positioning ensures that the magnetic suction force acts in the final closing stage where it is most needed, achieving reliable automatic closing and holding. During the opening or most of the opening stroke of the hinge, the two magnets are far apart, the magnetic suction force is weak or has no effect, which does not affect the normal opening and closing operations.

[0046] Meanwhile, in this case, the fixed magnet 42 is arranged at the tail of the first chute 41, and the movable magnet 61 is installed at the end of the first sliding block 6 that also moves within the chute, such that both magnets are located within the internal space of the movable seat 4 and are not directly exposed to the external environment. This "built-in" or "hidden" design can effectively avoid attracting ferromagnetic foreign objects such as iron filings and dust in the external environment. The adsorption of foreign objects will affect the effective attraction distance and suction force between the magnets, and may even hinder the movement of the sliding block. Therefore, this design ensures the long-term reliability of the magnetic attraction function and keeps the inside of the hinge clean.

[0047] In one embodiment, both the movable magnet 61 and the fixed magnet 42 are permanent magnets. A permanent magnet can continuously generate a magnetic field by itself and can provide a stable magnetic suction force without external energy.

[0048] Meanwhile, the magnetic force of the permanent magnet is persistent and hardly decays over time, ensuring the long-term stability of the hinge closing force. As a passive device, it does not require power supply, simplifies the hinge design, reduces costs and failure points.

[0049] In one embodiment, the damper 9 is a self-resetting compression damping type hydraulic damper cylinder, which is installed on the end face of the first sliding block 6. The first sliding block 6 drives the damper 9 to squeeze against the movable seat 4 to generate a closing damping force.

[0050] Therefore, when the hinge is closed and the first sliding block 6 moves towards the closed position, the damper 9 on its end face will come into contact with and be compressed by the movable seat 4. When the hydraulic damper cylinder is compressed, the internal liquid flows through the throttle orifice to generate resistance, thereby exerting a reaction force related to its speed on the movement of the first sliding block 6 to achieve buffering and deceleration.

[0051] In one embodiment, the fixed seat 2 is covered with a vertical adjustment seat 10. A vertical limiting area 101 is provided inside the vertical adjustment seat 10, and the vertical adjustment seat 10 is installed in the vertical limiting area 101 through a vertical guiding shaft 102; a vertically adjustable eccentric wheel 103 is rotatably installed on the vertical adjustment seat 10. Correspondingly, a vertical adjustment groove 104 is provided inside the fixed seat 2, and the vertically adjustable eccentric wheel 103 is installed to rotate within the vertical adjustment groove 104, pushing the fixed seat 2 to perform a vertical displacement relative to the vertical adjustment seat 10.

[0052] In this embodiment, the fixed seat 2 is not directly fixed to the cabinet body, but is vertically movably installed inside the vertical adjustment seat 10. The vertical adjustment seat 10 is the component finally fixed to the cabinet body. The fixed seat 2 is guided by the vertical guiding shaft 102 within the vertical limiting area 101 of the vertical adjustment seat 10 and can only move up and down. A rotatable vertically adjustable eccentric wheel 103 is installed on the vertical adjustment seat 10, and the cam part of this eccentric wheel extends into the vertical adjustment groove 104 on the fixed seat 2. When the eccentric wheel 103 is rotated, its eccentric profile will push the upper and lower walls of the vertical adjustment groove 104, thereby forcing the fixed seat 2 to move up or down relative to the vertical adjustment seat 10.

[0053] This structure allows for fine-tuning of the vertical position of the door panel after the hinge is installed on the cabinet body. This is crucial for ensuring that the door panel is aligned with the cabinet body frame and that the gaps between multiple doors are uniform, greatly improving the installation accuracy and convenience.

[0054] In one embodiment, the vertical adjustment seat 10 is covered with a horizontal adjustment seat 11. A horizontal limiting groove 111 is provided inside the horizontal adjustment seat 11, and the vertical adjustment seat 10 is sleeved within the horizontal limiting groove 111; a horizontally adjustable eccentric wheel 112 is rotatably installed on the horizontal adjustment seat 11. Correspondingly, a horizontal adjustment groove 105 is provided inside the vertical adjustment seat 10, and the horizontally adjustable eccentric wheel 112 is installed to rotate within the horizontal adjustment groove 105, pushing the vertical adjustment seat 10 to perform a horizontal displacement within the horizontal limiting groove 111.

[0055] In this embodiment, the vertical adjustment seat 10, together with the fixed seat 2 inside it, is installed inside the outermost horizontal adjustment seat 11 and can move left and right within the horizontal limit groove 111 of the horizontal adjustment seat 11. The horizontal adjustment seat 11 is finally fixed on the outermost layer of the cabinet body. A rotatable horizontal adjustment eccentric wheel 112 is installed on the horizontal adjustment seat 11, and its cam part extends into the horizontal adjustment groove 105 on the vertical adjustment seat 10. When the horizontal adjustment eccentric wheel 112 is rotated, it will push the side wall of the horizontal adjustment groove 105, causing the entire vertical adjustment seat 10, the fixed seat 2 and the hinge body inside it to move left or right relative to the horizontal adjustment seat 11.

[0056] Combining vertical adjustment and horizontal adjustment, this hinge has two-dimensional adjustment ability, that is, it can achieve the adjustment ability of the door panel in both vertical and horizontal directions. This makes the precise adjustment of the door panel position more comprehensive and convenient.

[0057] To sum up, a begonia corner hinge disclosed by the present invention has a core working mechanism based on a specially designed link sliding mechanism: the main hinge arm 5 and the sub-hinge arm 7 are connected to each other through a pin shaft and are respectively hinged to the fixed seat 2 and the movable seat 4 or are slidably connected through sliding blocks in the sliding grooves. This structure enables the door panel installed on the movable seat 4 to perform a begonia corner type opening and closing movement relative to the cabinet body installed on the fixed seat 2.

[0058] Among them, during the closing process, the hinge is specially designed with two functions to improve the user experience and reliability: 1. Buffer closing: A damper 9, preferably a compression type hydraulic damper cylinder, is provided between the first sliding block 6 and the movable seat 4 to generate a damping force on the movement at the end of the door panel closing, realizing a smooth and quiet soft closing.

[0059] 2. Magnetic attraction reset: By using a movable magnet 61 installed on the first sliding block 6 and a fixed magnet 42 inside the movable seat 4, preferably both are permanent magnets and are located near the tail of the sliding groove, a mutual attraction force is generated when the hinge is about to be completely closed, actively pulling the door panel back to the fully closed state and maintaining it, replacing the traditional spring reset structure that is prone to failure and noise. In particular, the magnets are cleverly arranged inside the movable seat, avoiding adsorbing external foreign objects and affecting the functional reliability.

[0060] In addition, this hinge can also integrate an adjustment function: by nesting a vertical adjustment seat 10 and a horizontal adjustment seat 11 outside the fixed seat 2 and using the cooperation of the eccentric wheel and the corresponding adjustment groove, the vertical and horizontal position fine-tuning of the door panel can be conveniently carried out after the hinge is installed to achieve a perfect installation alignment effect, so it can be widely promoted and used.

[0061] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A Begonia corner hinge, characterized in that: It comprises a fixed seat (2) fixed to the side of the cabinet (1), and a movable seat (4) fixed to the side of the door panel (3), wherein a main hinge arm (5) is hingedly mounted on the fixed seat (2) via a first pin shaft (21), and the other end of the main hinge arm (5) is connected to a first sliding block (6), and the first sliding block (6) is located in a first sliding groove (41) in the movable seat (4) and slides; The middle part of the main hinge arm (5) is hollowed out to provide an air avoidance groove (51), the air avoidance groove (51) is hinged to the middle part of the auxiliary hinge arm (7) through a second pin shaft (52), one end of the auxiliary hinge arm (7) is hinged to the movable seat (4) through a third hinge shaft (71), the other end of the auxiliary hinge arm (7) is hinged to the second sliding block (8), and the second sliding block (8) is located in the second sliding groove (22) in the fixed seat (2) and slides; the main hinge arm (5) and the auxiliary hinge arm (7) swing relative to the fixed seat (2) and the movable seat (4) to realize the opening and closing of the hinge; A damper (9) is provided between the first sliding block (6) and the movable seat (4), and the damper (9) slows down the movement speed of the first sliding block (6) and plays a buffering role when the hinge is closed; The first sliding block (6) is provided with a movable magnet (61), and the movable seat (4) is provided with a fixed magnet (42). When the hinge is closed, the first sliding block (6) pushes the movable magnet (61) to move in the direction of the fixed magnet (42), and the movable magnet (61) and the fixed magnet (42) attract each other, and the hinge is automatically reset and closed by driving the main hinge arm (5).

2. The begonia corner hinge according to claim 1, characterized in that: The first sliding groove (41) is a through groove arranged transversely in the movable seat (4), and the main hinge arm (5) and the first sliding block (6) are hingedly connected via a fourth hinge shaft (62).

3. The begonia corner hinge according to claim 2, characterized in that: The first slide groove (41) is provided with first guide grooves (43) inwardly concavely on both upper and lower sides, and the first sliding block (6) is provided with first wear-resistant blocks (63) at both upper and lower ends thereof, extending into the first guide groove (43) for sliding.

4. The begonia corner hinge according to claim 1, characterized in that: The second sliding groove (22) is a through groove arranged transversely in the fixing seat (2), and the auxiliary hinge arm (7) and the second sliding block (8) are hingedly connected via a fifth hinge shaft (81).

5. The crabapple corner hinge according to claim 4, characterized in that: The second sliding block (8) is arranged at the upper and lower ends of the auxiliary hinge arm (7).

6. The begonia corner hinge according to claim 1, characterized in that: The fixed magnet (42) is arranged at the tail of the first slide groove (41) and is installed in the direction of the first sliding block (6); the movable magnet (61) is installed at the end of the first sliding block (6) and is arranged in the direction of the fixed magnet (42).

7. The Begonia corner hinge according to claim 1 or 6, characterized in that: The movable magnet (61) and the fixed magnet (42) are both permanent magnets.

8. The crabapple corner hinge according to claim 1, characterized in that: The damper (9) is a compression damping type hydraulic damping cylinder, which is mounted on the end surface of the first sliding block (6). The first sliding block (6) drives the damper (9) and the movable seat (4) to squeeze each other, thereby generating a door closing damping force.

9. The crabapple corner hinge according to claim 1, characterized in that: The fixing seat (2) is covered with a vertical adjustment seat (10), a vertical limit area (101) is provided inside the vertical adjustment seat (10), and the vertical adjustment seat (10) is installed in the vertical limit area (101) via a vertical guide shaft (102); A vertical adjustment eccentric wheel (103) is rotatably mounted on the vertical adjustment seat (10). Correspondingly, a vertical adjustment slot (104) is provided in the fixed seat (2). The vertical adjustment eccentric wheel (103) is mounted in the vertical adjustment slot (104) and rotates to push the fixed seat (2) to perform vertical displacement relative to the vertical adjustment seat (10).

10. The crabapple corner hinge according to claim 9, characterized in that: The vertical adjustment seat (10) is covered with a transverse adjustment seat (11), a transverse limit groove (111) is provided in the transverse adjustment seat (11), and the vertical adjustment seat (10) is sleeved in the transverse limit groove (111); A transverse adjustment eccentric wheel (112) is rotatably mounted on the transverse adjustment seat (11). Correspondingly, a transverse adjustment slot (105) is provided in the vertical adjustment seat (10). The transverse adjustment eccentric wheel (112) is mounted in the transverse adjustment slot (105) and rotates to push the vertical adjustment seat (10) to perform transverse displacement in the transverse limit slot (111).

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