A flip-up door hinge system

Abstract

A flip-up door hinge system, comprising a main arm body mounted on a box body, and a hinge arm mounted on the box door: wherein: the main arm body is mounted with a hinge arm via a hinge shaft, and the hinge arm rotates around the hinge shaft to realize the opening and closing of the hinge; it also comprises a pulling arm: the pulling arm is mounted in the main arm body, one end of the pulling arm is hinged to the hinge arm, and a sliding shaft is mounted on the other side, the sliding shaft slides in a first sliding groove in the main arm body, and when the hinge arm moves, it drives the pulling arm to move; it also comprises a shift fork: the shift fork is mounted in the pulling arm, and the tail of the shift fork is inserted in a guide hole located at the tail of the pulling arm. The beneficial effect of the utility model is that the door hinge system of the present invention realizes automatic locking when the door is fully opened and fully closed by innovatively designing an open locking groove and a closed locking groove on the guide arc surface of the hinge arm.

Description

Technical Field

[0001] The utility model relates to a hardware hinge, in particular to an upward-turning door hinge system. Background Art

[0002] In modern home and commercial environments, space efficiency and aesthetics have become important design considerations. Especially in the fields of furniture design, vehicle components and industrial machinery, flip-up door hinge systems are popular because of their space saving and convenient operation. This type of hinge system allows the door to flip up and open vertically, thereby maximizing the use of space, especially in space-constrained environments, such as kitchen cabinets, ovens, microwave ovens, pizza ovens and other types of mechanical equipment boxes.

[0003] Although the traditional flip-up door hinge system is relatively mature in use, there are still several significant defects in its design and function. The most important problem is the lack of an effective locking mechanism to keep the door in a fully open or closed state. In traditional designs, the opening and closing of the door often rely on manual operation or simple mechanical friction to maintain its position. This design not only lacks stability, but also easily moves out of the original position when facing external impact or frequent operation. In addition, this friction-dependent design makes the door feel rough to operate and may gradually lose its effectiveness due to wear between components.

[0004] In addition, when the door is accidentally closed, the lack of a buffer mechanism may cause a loud impact noise, damage the door and hinge structure, and even cause harm to the user. Therefore, although the existing hinge system can basically meet the basic opening and closing requirements, there is still a lot of room for improvement in providing a safe, quiet and user-friendly experience. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide a flip-up door hinge system which is simple in structure, easy to use, and can automatically lock the door body when the door body is fully opened and closed, and provide smooth and controlled movement during the closing process of the hinge, thereby effectively reducing the impact force and noise during closing.

[0006] The purpose of the utility model is achieved in the following way: an upward-turning door hinge system, which includes a main arm body installed on a box body, and a hinge arm installed on a box door:

[0007] Wherein: the main arm body is equipped with a hinge arm through a hinge shaft, and the hinge arm rotates around the hinge shaft to realize the opening and closing of the hinge;

[0008] It also includes a pulling arm: the pulling arm is installed in the main arm body, one end of the pulling arm is hinged to the hinge arm, and a sliding shaft is installed on the other side. The sliding shaft slides in the first sliding groove in the main arm body. When the hinge arm moves, the pulling arm is driven to move;

[0009] It also includes a shift fork: the shift fork is installed in the pulling arm, the tail of the shift fork is inserted in the guide hole located at the tail of the pulling arm, the head of the shift fork is rotatably installed with a roller through a roller, the two ends of the roller are inserted in the second slide groove located on the pulling arm, and the surface of the shift fork is covered with a push spring, which pushes the shift fork and the roller to always move in the direction of the hinge arm;

[0010] It also includes a guide arc surface: the guide arc surface is located on the side wall of the hinge arm, the roller is always located on the guide arc surface and slides, and the guide arc surface is respectively provided with an opening locking groove and a closing locking groove corresponding to the opening position and the closing position of the hinge arm;

[0011] It also includes a buffer: the buffer is located in the main arm body, the main body of the buffer is fixed to the main arm body, the piston rod of the buffer extends into the active stroke of the pull arm, and when the hinge is closed, it presses the pull arm to achieve a buffering effect when the hinge is closed.

[0012] Furthermore: the buffer is a self-resetting hydraulic damping buffer.

[0013] Furthermore: a return spring is mounted on the surface of the piston rod, one end of the return spring presses on the main body of the buffer, and the other end presses on the push head located at the top of the piston rod. The return spring generates elastic force to always push the piston rod to move in the opening direction.

[0014] Furthermore, the main arm body is arranged in an open slot shape, and the pulling arm and the buffer are installed in the open slot of the main arm body.

[0015] Furthermore: a base is provided at the bottom of the opening groove of the main arm body, which protrudes upward; the main body of the buffer is fixed in the opening groove by a first pin; the bottom of the buffer main body is supported on the base; a second pin is installed on the top of the buffer main body to fix it to the main arm body, and the buffer main body is clamped and fixed between the second pin and the base.

[0016] Furthermore: the opening locking groove and the closing locking groove are inner grooves arranged on the guide arc surface. When the hinge is closed, the roller card is placed in the closing locking groove; when the hinge is opened, the roller card is placed in the opening locking groove.

[0017] The beneficial effects of the utility model are: 1. Simple structure, low production cost and improved market competitiveness.

[0018] 2. The door hinge system of the utility model realizes automatic locking when the door is fully opened or fully closed by innovatively designing an open locking groove and a closed locking groove on the guide arc surface of the hinge arm. This locking mechanism simplifies the operation process, and the user can ensure that the door remains stably in the open or closed state without additional actions. The self-locking function not only improves the convenience of use, but also enhances the safety of the system, preventing the risk of accidental changes in the door state due to accidental collisions or other external forces. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a rendering of the utility model being assembled with a box body and a box door.

[0020] Figure 2 This is a schematic diagram of the door hinge of the utility model in a closed state.

[0021] Figure 3 This is a schematic diagram of the door hinge of the utility model in an open state.

[0022] Figure 4 This is the structural assembly drawing of the utility model.

[0023] Figure 5 This is a structural sectional view of the main hinge in the utility model in an open state.

[0024] Figure 6 This is a structural cross-sectional view of the main hinge in the utility model in a closed state.

[0025] Figure 7 It is an enlarged view of the local structure of the figure in the utility model. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below with reference to the accompanying drawings. A flip-up door hinge system, characterized in that it comprises a main arm body 3 installed on a box body 2, and a hinge arm 5 installed on a box door 1:

[0027] Wherein: the main arm body 3 is installed with a hinge arm 5 through a hinge shaft 4, and the hinge arm 5 rotates around the hinge shaft 4 to realize the opening and closing of the hinge;

[0028] It also includes a pulling arm 6: the pulling arm 6 is installed in the main arm body 3, one end of the pulling arm 6 is hinged to the hinge arm 5, and the other side is installed with a sliding shaft 61, the sliding shaft 61 is inserted in the first sliding groove 31 in the main arm body 3 and slides, when the hinge arm 5 moves, the pulling arm 6 is driven to move;

[0029] It also includes a shift fork 7: the shift fork 7 is installed in the pulling arm 6, the tail of the shift fork 7 is inserted in the guide hole 62 located at the tail of the pulling arm 6, the head of the shift fork 7 is rotatably installed with a roller 72 through a roller 71, the two ends of the roller 71 are inserted in the second slide groove 63 located on the pulling arm 6, and the surface of the shift fork 7 is covered with a push spring 73, which pushes the shift fork 7 and the roller 72 to always move towards the hinge arm 5;

[0030] It also includes a guide arc surface 51: the guide arc surface 51 is located on the side wall of the hinge arm 5, and the roller 72 is always located on the guide arc surface 51 and slides. The guide arc surface 51 is respectively provided with an opening locking groove 52 and a closing locking groove 53 corresponding to the opening position and the closing position of the hinge arm 5;

[0031] It also includes a buffer 8: the buffer 8 is located in the main arm body 3, the main body 83 of the buffer 8 is fixed to the main arm body 3, the piston rod 81 of the buffer 8 extends into the active stroke of the pulling arm 6, and presses the pulling arm 6 when the hinge is closed to achieve a buffering effect when the hinge is closed.

[0032] In one embodiment, the buffer 8 is a self-resetting hydraulic damping buffer.

[0033] In one of the embodiments, a return spring 82 is mounted on the surface of the piston rod 81. One end of the return spring 82 presses on the main body 83 of the buffer 8, and the other end presses on the push head 84 located at the top of the piston rod 81. The return spring 82 generates elastic force to always push the piston rod 81 to move in the opening direction.

[0034] In one embodiment, the main arm body 3 is arranged in an open groove shape, and the pulling arm 6 and the buffer 8 are installed in the open groove of the main arm body 3 .

[0035] In one of the embodiments, a base 32 is provided at the bottom of the opening groove of the main arm body 3, which protrudes upward. The main body 83 of the buffer 8 is fixed in the opening groove by a first pin 85. The bottom of the main body 83 of the buffer 8 is supported on the base 32. The top of the main body 83 of the buffer 8 is installed with a second pin 86 to be fixed to the main arm body 3, and the main body 83 of the buffer 8 is clamped and fixed between the second pin 86 and the base 32.

[0036] In one embodiment, the opening locking groove 52 and the closing locking groove 53 are inner grooves arranged on the guide arc surface 51. When the hinge is closed, the roller 72 is inserted into the closing locking groove 53; when the hinge is opened, the roller 72 is inserted into the opening locking groove 52.

[0037] Working principle: In actual use, it is usually necessary to install two identical hinges to connect the box body and the door. The two hinges work together to complete the opening and closing operation of the door.

[0038] In this case, another way of using it was proposed, e.g. Figure 2-4 As shown in the figure, the system includes two types of hinges: main hinge A and auxiliary hinge B, which are symmetrically installed between the door and the box body. Each hinge contains the following main components: main arm body, hinge arm, pull arm, shift fork, guide arc surface: arranged on the side wall of the hinge arm, the roller slides on the guide arc surface, and the guide arc surface is provided with an opening locking groove and a closing locking groove. When the hinge arm moves, the roller can slide in the guide arc surface or the opening locking groove and the closing locking groove.

[0039] When the user operates the door to open or close, the hinge arm rotates around the hinge axis. The rotation of the hinge arm is transmitted through the pull arm hinged to it, further driving the roller in the fork to slide on the guide arc surface. When the roller slides on the guide arc surface, rolling friction is generated, which reduces the speed of the hinge opening and closing, playing a certain damping role.

[0040] Furthermore: as the hinge arm rotates, the roller slides to the end of the guide arc, such as when the hinge is open, the roller snaps into the open locking groove. When the hinge is closed, the roller snaps into the closed locking groove. These locking grooves are designed to mechanically lock the roller when the door is fully opened or closed, thereby stabilizing the state of the door and preventing unintentional movement.

[0041] It is important to note that in the main hinge A, the buffer is set in the main arm body. Compared with the main hinge A, the secondary hinge B is equipped with a buffer, which includes a hydraulic buffer and a piston rod, and the piston rod extends into the movement stroke of the pull arm. When the door is close to the closed position, the piston rod contacts the pull arm and provides a buffering force to reduce the speed and impact during closing, thereby reducing noise and impact damage to the structure.

[0042] Furthermore, the piston rod is covered with a return spring, one end of which is fixed to the main body of the buffer, and the other end is pressed against the push head at the top of the piston rod. This design allows the return spring to always push the piston rod to move in the opening direction when there is no external force, helping to maintain the stability of the hinge in the open state. At the same time, when the hinge is opened, the return spring pushes the buffer to return to open, preparing for the closing of the door hinge.

[0043] Compared with the conventional technology: In one embodiment of the present case, by integrating a buffer in the main hinge A and omitting the buffer in the secondary hinge B, the present invention realizes effective cost control while realizing the damping effect when the door hinge system is closed. This design not only reduces the number of components, but also reduces production and maintenance costs, while maintaining the efficiency and reliability of the system.

[0044] In general, the single buffer flip-up door hinge system of the utility model provides a solution with significant advantages in operability, safety and cost efficiency through its efficient locking and buffering mechanism. These characteristics make the system suitable for a wide range of commercial and industrial applications, especially in occasions with high requirements for operational convenience and durability, so it can be widely promoted and used.

[0045] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the scope of protection of the claims created by the utility model.

Claims

1. A flip-up door hinge system, characterized in that: It comprises a main arm body (3) installed on a box body (2), and a hinge arm (5) installed on a box door (1): Wherein: the main arm body (3) is provided with a hinge arm (5) via a hinge shaft (4), and the hinge arm (5) rotates around the hinge shaft (4) to realize the opening and closing of the hinge; It also includes a pulling arm (6): the pulling arm (6) is installed in the main arm body (3), one end of the pulling arm (6) is hinged to the hinge arm (5), and the other side is installed with a sliding shaft (61), the sliding shaft (61) is inserted into the first sliding groove (31) in the main arm body (3) and slides, and when the hinge arm (5) moves, the pulling arm (6) is driven to move; It also includes a shift fork (7): the shift fork (7) is installed in the pulling arm (6), the tail of the shift fork (7) is inserted into the guide hole (62) located at the tail of the pulling arm (6), the head of the shift fork (7) is rotatably mounted with a roller (72) through a roller (71), the two ends of the roller (71) are inserted into a second slide groove (63) located on the pulling arm (6), and a push spring (73) is mounted on the surface of the shift fork (7), and the push spring (73) pushes the shift fork (7) and the roller (72) to always move in the direction of the hinge arm (5); It also includes a guide arc surface (51): the guide arc surface (51) is located on the side wall of the hinge arm (5), the roller (72) is always located on the guide arc surface (51) and slides, and the guide arc surface (51) is respectively provided with an opening locking groove (52) and a closing locking groove (53) corresponding to the opening position and the closing position of the hinge arm (5); The device further comprises a buffer (8): the buffer (8) is located in the main arm body (3), a main body (83) of the buffer (8) is fixed to the main arm body (3), a piston rod (81) of the buffer (8) extends into the movable stroke of the pull arm (6), and when the hinge is closed, the pull arm (6) is pressed against to achieve a buffering effect when the hinge is closed.

2. The flip-up door hinge system according to claim 1, characterized in that: The buffer (8) is a self-resetting hydraulic damping buffer.

3. The flip-up door hinge system according to claim 1, characterized in that: A return spring (82) is sleeved on the surface of the piston rod (81). One end of the return spring (82) presses against the main body (83) of the buffer (8), and the other end presses against the push head (84) located at the top of the piston rod (81). The return spring (82) generates elastic force to always push the piston rod (81) to move in the opening direction.

4. The flip-up door hinge system according to claim 1, characterized in that: The main arm body (3) is arranged in the shape of an open groove, and the pulling arm (6) and the buffer (8) are installed in the open groove of the main arm body (3).

5. The flip-up door hinge system according to claim 4, characterized in that: The bottom of the opening groove of the main arm body (3) is protruding upward and is provided with a base (32); the main body (83) of the buffer (8) is fixed in the opening groove by a first pin (85); the bottom of the main body (83) of the buffer (8) is supported on the base (32); the top of the main body (83) of the buffer (8) is provided with a second pin (86) to be fixed to the main arm body (3); the main body (83) of the buffer (8) is clamped and fixed between the second pin (86) and the base (32).

6. The flip-up door hinge system according to claim 1, characterized in that: The opening locking groove (52) and the closing locking groove (53) are inner grooves arranged on the guide arc surface (51); when the hinge is closed, the roller (72) is inserted into the closing locking groove (53); when the hinge is opened, the roller (72) is inserted into the opening locking groove (52).

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