Hinge for heavy door equipment

By using a multi-layered turning structure and a limiting buckle design, the problem of insufficient stability caused by the simple structure of heavy-duty door hinges is solved, achieving higher structural stability and service life, and improving the stability of heavy-duty doors during opening and closing.

CN223854062UActive Publication Date: 2026-01-30SHENZHEN DAIMUKE CABINET LOCK HARDWARE CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202520440707.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-13
Publication Date
2026-01-30
Estimated Expiration
2035-03-13

AI Technical Summary

Technical Problem

Existing hinge structures are relatively simple in design due to spatial constraints, which cannot meet the long-term use requirements of heavy doors. They are prone to deformation or breakage and lack the necessary support and stability, causing the door to sway or shift.

Method used

A hinge for heavy-duty door equipment was designed, which adopts a multi-layered turning structure of moving components. Through multiple layers of connection and support, the structural stability is enhanced, and the stable latching is achieved through limit buckles and bolt connections, avoiding irreversible connection methods and improving flexibility.

Benefits of technology

It significantly enhances the structural stability of heavy-duty door equipment, enabling it to withstand greater gravity and external forces, extend its service life, prevent deformation or damage, and improve the flexibility of maintenance and adjustment.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223854062U_ABST
    Figure CN223854062U_ABST
Patent Text Reader

Abstract

The utility model discloses a hinge for heavy door equipment, which comprises a heavy door main board, the inner side of the heavy door main board is provided with a buckle frame, one side of the buckle frame is provided with a movable component, the surface of one side of the buckle frame is provided with two notches which are symmetrically distributed, and the movable component is provided with a movable component. A limiting clamping groove is formed in the buckle frame, the movable assembly comprises six movable sets, and the number of the movable sets is six. The limiting buckle blocks on one sides of the multiple sets of buckle plates are buckled in the limiting clamping grooves in the buckle frame, the multiple buckle plates, the connecting plates and the turning plates are connected with one another, connection of multiple layers of movable sets is achieved, the whole body is arranged in a groove of a heavy door main plate, the hinge design of a multi-layer turning structure is utilized, and the structure is simple and convenient. Through multi-layer connection and supporting, the structural stability of the heavy door equipment is remarkably enhanced, so that the door body can bear larger gravity and external force in the opening and closing process, and is not prone to deformation or damage.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of hinge equipment technology, specifically a hinge for heavy-duty door equipment. Background Technology

[0002] A hinge is a mechanical device used to connect two objects and allow them to rotate relative to each other. The main function of a hinge is to connect and support two objects while allowing them a certain degree of rotational freedom. This rotational function allows the two connected objects to open and close flexibly, making it suitable for various occasions that require opening, closing, or rotation. The working principle of a hinge is based on the lever principle. A heavy-duty door hinge is a metal fitting specially designed to connect heavy doors (such as gates) and door frames, and is usually made of high-strength metal materials such as steel.

[0003] However, existing hinge structures are relatively simple in design due to spatial constraints. Simple hinges may not be able to withstand the weight of heavy doors, and are prone to deformation or breakage after long-term use. The load-bearing design of the hinges is unreasonable and cannot meet the usage requirements of heavy doors. The simple hinge structure may lack the necessary support and stability structure, causing the door to sway or shift during opening and closing. The connecting parts of the hinge may not be strong enough and are prone to loosening or falling off. Therefore, we propose a hinge for heavy door equipment. Utility Model Content

[0004] One of the technical problems this application aims to solve is: addressing the issue that the simple hinge design, due to spatial structural limitations, cannot meet the requirements of long-term use.

[0005] To address the aforementioned technical problems, this application provides a hinge for heavy-duty door equipment, including a heavy-duty door main board. A latching frame is provided on the inner side of the main board, and a movable component is provided on one side of the latching frame. Two slots are symmetrically distributed on one side surface of the latching frame. A limiting slot is provided inside the latching frame. The movable component includes six movable groups. Through multiple layers of connection and support, the movable component enhances the structural stability of the heavy-duty door equipment.

[0006] In some embodiments, the active group includes a lower buckle plate, an upper connecting plate and an upper turning plate are provided at the upper end of the lower buckle plate, a lower turning plate and a lower connecting plate are provided at the lower end of the upper connecting plate and the upper turning plate, and an upper buckle plate is provided at the upper end of the lower turning plate and the lower connecting plate. A limit buckle block is provided at one end of both the lower buckle plate and the upper buckle plate, and the limit buckle block and the limit slot are mutually adapted.

[0007] In some embodiments, the lower buckle plate, the lower turning plate, and the lower connecting plate located at the lower end are provided with annular slots on both the upper and lower sides of the upper connecting plate, the upper turning plate, and the upper buckle plate located at the upper end. The annular slots on both sides of the lower buckle plate, the lower turning plate, and the lower connecting plate located at the lower end are opposite to the annular slots on both sides of the upper connecting plate, the upper turning plate, and the upper buckle plate located at the upper end.

[0008] In some embodiments, a through groove is provided on the inner side of the annular slot, and a connecting bolt is snapped into the through groove on the same vertical line. A connecting nut is rotatably connected to the bottom end of the connecting bolt. An annular washer is snapped into the two annular slots that are opposite each other. An annular slot is provided between the uppermost annular slot and one side surface of the connecting bolt, and an annular slot is provided between the lowermost annular slot and one side surface of the connecting nut.

[0009] In some embodiments, a connecting component is fixedly connected to one side surface of both the heavy-duty door main board and the buckle frame. The connecting component includes a fixing block, one side surface of which is fixedly connected to one side surface of both the heavy-duty door main board and the buckle frame. A semi-circular rotating block is movably connected inside the fixing block.

[0010] In some embodiments, a limiting groove is formed on one side surface of the fixing block, and one end of the fixing block is movably connected to the inside of the limiting groove. A rotating groove is formed on one side surface of the semi-circular rotating block, and the two rotating grooves are joined together as a whole. The rotating groove is positioned directly opposite the slot opening.

[0011] In some embodiments, the rotating slot is configured in the shape of a hexagonal rhombus.

[0012] In some embodiments, the rotating slot is configured in the shape of a four-leaf clover.

[0013] This utility model has at least the following beneficial effects:

[0014] 1. This utility model uses multiple sets of buckle plates with limiting buckle blocks on one side to buckle inside the limiting buckle groove inside the buckle frame. Multiple buckle plates, connecting plates and turning plates are connected to each other to realize the connection of multiple moving groups. The whole is set inside the groove of the heavy door main board. Utilizing the hinge design of the multi-layer turning structure, the structural stability of the heavy door equipment is significantly enhanced through multiple layers of connection and support. This allows the door to withstand greater gravity and external forces during opening and closing, making it less prone to deformation or damage, thereby extending the service life of the door.

[0015] 2. This utility model utilizes a slot to rotate two semi-circular rotating blocks inside two assembled fixed blocks, while simultaneously using a limiting slot to limit their movement. This ensures that the two semi-circular rotating blocks are stably locked within the two fixed blocks, avoiding the use of irreversible connection methods. This improves the flexibility of heavy-duty doors when they need to be repaired, replaced, or adjusted, and enhances their overall practicality. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention from a right-side view.

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention from a right-side view.

[0018] Figure 3 This is a three-dimensional structural breakdown diagram from a top view of the present invention;

[0019] Figure 4 This is a first disassembled schematic diagram of the three-dimensional structure of this utility model;

[0020] Figure 5 This is a second split-off schematic diagram of the three-dimensional structure of this utility model;

[0021] Figure 6 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model.

[0022] In the diagram: 1. Heavy-duty door main board; 2. Buckle bracket; 3. Movable component; 4. Groove; 5. Movable assembly; 6. Lower buckle plate; 7. Upper connecting plate; 8. Upper turning plate; 9. Lower turning plate; 10. Lower connecting plate; 11. Upper buckle plate; 12. Annular groove; 13. Annular pad; 14. Through groove; 15. Connecting bolt; 16. Connecting nut; 17. Limiting buckle block; 18. Limiting groove; 19. Connecting component; 20. Semi-circular rotating block; 21. Fixing block; 22. Limiting groove; 23. Rotating groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 andFigure 5 This utility model provides a technical solution: a hinge for heavy-duty door equipment, including a heavy-duty door main board 1, a latching frame 2 is provided on the inner side of the heavy-duty door main board 1, a movable component 3 is provided on one side of the latching frame 2, a slot 4 is opened on one side surface of the latching frame 2, two slots 4 are opened and symmetrically distributed, a limiting slot 18 is opened inside the latching frame 2, the movable component 3 includes movable groups 5, six groups of movable groups 5 are provided, the movable component 3 adopts a multi-layer turning structure hinge design, through multi-layer connection and support, the structural stability of the heavy-duty door equipment is enhanced. This design enables the door to withstand greater gravity and external force during opening and closing, and is not easy to deform or be damaged, thereby extending the service life of the door.

[0026] Activity group 5 includes a lower buckle plate 6. The upper end of the lower buckle plate 6 is provided with an upper connecting plate 7 and an upper turning plate 8. The lower end of the upper connecting plate 7 and the upper turning plate 8 is provided with a lower turning plate 9 and a lower connecting plate 10. The upper end of the lower turning plate 9 and the lower connecting plate 10 is provided with an upper buckle plate 11. One end of the lower buckle plate 6 and the upper buckle plate 11 is provided with a limiting buckle block 17. The limiting buckle block 17 and the limiting slot 18 are mutually compatible. The lower buckle plate 6 and the upper buckle plate 11 are fixed to one side of the two buckle frames 2 by the cooperation between the limiting buckle block 17 and the limiting slot 18.

[0027] The lower buckle plate 6, lower turning plate 9, and lower connecting plate 10 located at the lower end are provided with annular slots 12 on both the upper and lower sides of the upper connecting plate 7, upper turning plate 8, and upper buckle plate 11 located at the upper end. The annular slots 12 on both sides of the lower buckle plate 6, lower turning plate 9, and lower connecting plate 10 located at the lower end are opposite to the annular slots 12 on both sides of the upper connecting plate 7, upper turning plate 8, and upper buckle plate 11 located at the upper end, and the whole is in a flush state.

[0028] An annular groove 12 has a through groove 14 on its inner side. A connecting bolt 15 is snapped into the through groove 14 on the same vertical line. A connecting nut 16 is rotatably connected to the bottom end of the connecting bolt 15. An annular pad 13 is snapped into the two annular grooves 12 that are opposite each other. An annular groove 12 is provided between the uppermost annular groove 12 and one side surface of the connecting bolt 15. An annular groove 12 is provided between the lowermost annular groove 12 and one side surface of the connecting nut 16. The connecting bolt 15 and the connecting nut 16 can be tightly connected. The circumference of the connecting bolt 15 is the same as the circumference of the through groove 14. The connecting bolt 15 can be completely snapped into the inside of the through groove 14 without leaving any gaps.

[0029] A connecting component 19 is fixedly connected to one side surface of the heavy-duty door main board 1 and the buckle frame 2. The connecting component 19 includes a fixing block 21. One side surface of the fixing block 21 is fixedly connected to one side surface of the heavy-duty door main board 1 and the buckle frame 2. Two fixing blocks 21 are assembled into a group. There are two groups on one side in total, and they are distributed symmetrically in the vertical direction. A semi-circular rotating block 20 is movably connected inside the fixing block 21.

[0030] A limiting groove 22 is provided on one side surface of the fixed block 21, and one end of the fixed block 21 is movably connected to the inside of the limiting groove 22. A rotating groove 23 is provided on one side surface of the semi-circular rotating block 20. The two rotating grooves 23 are combined into a whole. The rotating groove 23 is positioned directly opposite the slot 4, and the rotating groove 23 can be conveniently used through the slot 4.

[0031] The rotating groove 23 is set in a hexagonal rhombus shape, and two rotating grooves 23 are closed to form a complete hexagonal rhombus.

[0032] Example 2

[0033] Please see Figure 6 This utility model provides a technical solution:

[0034] Unlike Embodiment 1, the rotating groove 23 is shaped like a four-leaf clover. The two rotating grooves 23 are closed to form a complete four-leaf clover shape, which makes it easier for the two semi-circular rotating blocks 20 to rotate.

[0035] Before using the entire device, place the two heavy-duty door panels 1 flat, and snap the limiting snap blocks 17 on one side of the multiple sets of snap plates into the limiting slots 18 inside the snap frame 2. Then, connect the multiple snap plates, connecting plates, and turning plates to each other in sequence to achieve the connection of the multi-layer movable group 5. During the connection process, a ring pad 13 is snapped between the two upper and lower opposite annular slots 12. An annular slot 12 is installed between the uppermost annular slot 12 and one side surface of the connecting bolt 15, and an annular slot 13 is installed between the lowermost annular slot 12 and one side surface of the connecting nut 16. Install an annular slot 12, and finally tightly connect the seven connecting bolts 15 and the seven connecting nuts 16. Then install the device into the mounting groove of the two heavy-duty door main plates 1. Through the slot 4, use the rotating groove 23 to rotate the two semi-circular rotating blocks 20 inside the two assembled fixing blocks 21. At the same time, use the limiting groove 22 to limit them, so that the two semi-circular rotating blocks 20 can be stably locked inside the two fixing blocks 21. This avoids the use of irreversible connection methods, improves the flexibility of the heavy-duty door when it needs to be repaired, replaced or adjusted, and improves the overall practicality.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hinge for heavy door equipment comprising a heavy door main plate (1), characterized in that: The inner side of the heavy door main plate (1) is provided with a buckle frame (2), one side of the buckle frame (2) is provided with a movable assembly (3), and the side surface of the buckle frame (2) is provided with a notch (4), the notch (4) is provided with two and is symmetrically distributed, the inside of the buckle frame (2) is provided with a limiting buckle groove (18), the movable assembly (3) includes a movable group (5), the movable group (5) is provided with six groups, the movable assembly (3) is connected and supported through multiple levels, and the structural stability of the heavy door equipment is enhanced.

2. A hinge for heavy door equipment according to claim 1, characterized in that: The movable group (5) includes a lower buckle plate (6), the upper end of the lower buckle plate (6) is provided with an upper connecting plate (7) and an upper turning plate (8), the lower end of the upper connecting plate (7) and the upper turning plate (8) is provided with a lower turning plate (9) and a lower connecting plate (10), the upper end of the lower turning plate (9) and the lower connecting plate (10) is provided with an upper buckle plate (11), one end of the lower buckle plate (6) and the upper buckle plate (11) is provided with a limiting buckle block (17), and the limiting buckle block (17) and the limiting buckle groove (18) are matched with each other.

3. A hinge for heavy door equipment according to claim 2, characterized in that: The lower buckle plate (6), the lower turning plate (9) and the lower connecting plate (10) at the lower end and the upper connecting plate (7), the upper turning plate (8) and the upper buckle plate (11) at the upper end are all provided with annular buckle grooves (12) on the upper and lower sides, and the annular buckle grooves (12) on the two sides of the lower buckle plate (6), the lower turning plate (9) and the lower connecting plate (10) at the lower end are matched with the annular buckle grooves (12) on the two sides of the upper connecting plate (7), the upper turning plate (8) and the upper buckle plate (11) at the upper end.

4. A hinge for heavy door equipment according to claim 3, characterized in that: The inner side of the annular buckle groove (12) is provided with a through groove (14), the inside of the through groove (14) on the same vertical line is buckled and connected with a connecting bolt (15), the bottom end of the connecting bolt (15) is rotatably connected with a connecting nut (16), the annular pad (13) is buckled and connected between the two annular buckle grooves (12) opposite to each other, and one annular buckle groove (12) is arranged between the side surface of the connecting bolt (15) and the annular buckle groove (12) at the uppermost end.

5. A hinge for heavy door equipment according to claim 1, characterized in that: The side surface of the heavy door main plate (1) and the buckle frame (2) is fixedly connected with a connecting assembly (19), the connecting assembly (19) includes a fixed block (21), the side surface of the fixed block (21) is fixedly connected to the side surface of the heavy door main plate (1) and the buckle frame (2), and the inside of the fixed block (21) is movably connected with a semicircular rotating block (20).

6. A hinge for a heavy door apparatus according to claim 5, wherein: One side surface of the fixed block (21) is provided with a limiting slot (22), one end of the fixed block (21) is movably connected to the inside of the limiting slot (22), one side surface of the semicircular rotating block (20) is provided with a rotating slot (23), two rotating slots (23) are combined into one whole, and the rotating slot (23) is arranged opposite to the slot (4).

7. A hinge for heavy door equipment according to claim 6, characterized in that: The rotating slot (23) is arranged in a hexagonal rhombus shape.

8. A hinge for heavy door equipment according to claim 6, characterized in that: The rotating slot (23) is arranged in a four-leaf clover shape.