Box door hinge
By designing a combination of mounting frame, guide seat, connecting arm, hook plate, and push rod for the door hinge, the problems of poor sealing and insufficient movement trajectory control of traditional hinges are solved. This achieves smooth opening and closing of the door and improved sealing performance, reduces installation difficulty and collision risk, and extends service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN SHUNDE SHIXIN TECHNOLOGY CO LTD
- Filing Date
- 2025-05-09
- Publication Date
- 2026-04-17
AI Technical Summary
Traditional cabinet door hinges are not airtight in electrical appliances such as ovens, lack locking force, and lack control over the movement of the door, which increases the difficulty of installation and the risk of collision during use. In addition, their simple structure makes them prone to wear and failure.
Design a door hinge that includes a mounting frame, guide seat, connecting arm, hook plate and push rod. Through the combination of hook plate with guide groove, upper guide wheel and limit platform, the door movement trajectory can be precisely controlled and limited. Combined with spring, it provides stable closing force and improves sealing performance.
It achieves smooth and reliable door opening and closing, improves sealing performance and service life, reduces installation difficulty and collision risk, and improves cooking efficiency and safety.
Smart Images
Figure CN224134448U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a door connecting component, specifically a door hinge. Background Technology
[0002] Ovens and other appliances on the market require a tight connection between the door and the cabinet to prevent heat and steam leakage. However, traditional cabinet door hinges only use sealing rings to seal the space, lacking the locking force after the door is closed, resulting in poor sealing and affecting cooking efficiency and safety. Secondly, cabinet door hinges also lack control over the opening trajectory. If the trajectory is not properly controlled during the opening process, the edge of the door or the handle may collide with the countertop, wall, etc. This is especially true when installing built-in appliances, where the external space is very limited, and the lack of an effective guiding structure increases the difficulty of installation and the risk of collisions during use. Furthermore, the structural design of cabinet door hinges on the market is often relatively simple, without restrictions on the opening angle of the door. After being subjected to the inertial impact of a heavy door or after long-term use, they are prone to wear, deformation, or even failure. Utility Model Content
[0003] The purpose of this utility model is to overcome the shortcomings of existing technologies and provide a cabinet door hinge that is simple in structure, low in manufacturing cost, equipped with a hook plate for guiding and limiting functions, ensures smooth and reliable door opening and closing, provides a continuous and stable closing force to improve sealing performance and safety, extends service life, and improves cooking efficiency.
[0004] The purpose of this utility model is achieved in the following way: a door hinge, which includes a mounting frame fixed on the box body and a guide seat mounted on the door body. A connecting arm is hinged on the mounting frame, and the guide seat is connected to the mounting frame through the connecting arm. The guide seat and the connecting arm swing around the hinge point on the mounting frame to realize the opening and closing function of the door body. A push rod is movably connected inside the mounting frame.
[0005] The mounting frame is also hinged with a hook plate. One end of the hook plate extends into the mounting frame and is connected to a push rod that is movably connected therein. The other end passes through the mounting frame and is connected to an upper guide wheel in the guide seat. The upper guide wheel is rotatably embedded in the guide seat and slides along the end face of the hook plate to limit the movement trajectory of the door opening.
[0006] A guide groove is provided through the end face of the mounting frame, and the hook plate is clamped in the guide groove;
[0007] The push rod is fitted with a spring, which constantly pushes the push rod to move, causing the far end of the hook plate to tilt up. The hook plate then pushes the guide seat to move in the direction of closing the door via the upper guide wheel.
[0008] The hook plate has an upward-curving end with a limiting platform, and the upper guide wheel is hooked onto this limiting platform to restrict the opening angle of the door.
[0009] One end of the push rod is open and has a clamping groove, and the tail of the hook plate is hinged in the clamping groove.
[0010] A spring platform is provided inside the mounting frame. One end of the spring abuts against the inner wall of the spring platform, and the other end abuts against the end face of the push rod. The spring generates a thrust, which pushes the hook plate to swing upward through the push rod, generating a closing force.
[0011] The connecting arm includes a buckle and several overlapping and connected safety plates. The safety plates have mounting holes, the buckle holds the safety plates therein and is hinged to the safety plates; one end of the safety plate is recessed to form a buckle groove, and the buckle is fastened into the buckle groove.
[0012] The beneficial effects of this utility model are: 1. Simple structure, low manufacturing cost, and improved market competitiveness.
[0013] 2. A hook plate is installed to precisely control and guide the opening trajectory of the door, protecting the door and cabinet from damage and extending their service life.
[0014] 3. The hook plate is equipped with a limit plate to restrict the maximum opening angle of the door, which more gently and firmly restricts the maximum opening angle of the door, thereby improving the impact resistance and service life of the door.
[0015] 4. The hook plate has both guiding and limiting functions. Its compact structure allows it to achieve multiple functions without the need for additional parts, thus improving the user experience.
[0016] 5. The spring provides a stable closing force to the door, improving its sealing performance and increasing energy and cooking efficiency. Attached Figure Description
[0017] Figure 1-2 This is a rendering of the final assembly of this utility model.
[0018] Figure 3 This is a cross-sectional view of the hinge in this utility model.
[0019] Figure 4 This is a structural assembly drawing of the hinge in this utility model. Detailed Implementation
[0020] The present invention will be further described in detail below with reference to the accompanying drawings. A door hinge includes a mounting frame 1 fixed on a box body and a guide seat 2 mounted on a door body. A connecting arm 3 is hinged on the mounting frame 1. The guide seat 2 is connected to the mounting frame 1 through the connecting arm 3. The guide seat 2 and the connecting arm 3 swing around the hinge point on the mounting frame 1 to realize the opening and closing function of the door body. A push rod 5 is movably connected inside the mounting frame 1.
[0021] The mounting frame 1 is also hinged with a hook plate 4. One end of the hook plate 4 extends into the mounting frame 1 and is connected to the push rod 5 that is movably connected therein. The other end passes through the mounting frame 1 and is connected to the upper guide wheel 6 in the guide seat 2. The upper guide wheel 6 is rotatably embedded in the guide seat 2. The upper guide wheel 6 slides along the end face of the hook plate 4 to limit the movement trajectory of the door opening.
[0022] The end face of the mounting frame 1 is provided with a guide groove 11, and the hook plate 4 is clamped in the guide groove 11;
[0023] The push rod 5 is fitted with a spring 8, which constantly pushes the push rod 5 to move, causing the far end of the hook plate 4 to tilt up. The hook plate 4 pushes the guide seat 2 to move in the closing direction through the upper guide wheel 6.
[0024] The hook plate 4 has an upward-curving end with a limiting platform 41, and the upper guide wheel 6 is hooked onto the limiting platform 41 to limit the opening angle of the door.
[0025] One end of the push rod 5 is open and has a clamping groove 51, and the tail of the hook plate 4 is hinged in the clamping groove 51.
[0026] A spring platform 9 is provided inside the mounting frame 1. One end of the spring 8 presses against the inner wall of the spring platform 9, and the other end presses against the end face of the push rod 5. The spring 8 generates a thrust, which pushes the hook plate 4 to swing upward through the push rod 5, generating a closing force.
[0027] The connecting arm 3 includes a buckle 31 and a plurality of overlapping and connected safety plates 32. An installation hole is provided through the safety plate 32, the buckle 31 clamps the safety plate 32 therein and is hinged to the safety plate 32; one end of the safety plate 32 is recessed to form a buckle groove 321, and the buckle 31 is fastened in the buckle groove 321.
[0028] Working principle: An installation frame is fixedly connected in the housing, and a guide seat is fixedly connected to the door. The guide seat is connected by a connecting arm that is hinged in the installation frame. During the opening and closing of the door, the guide seat and the connecting arm swing around the hinge point on the installation frame, thereby realizing the opening and closing function of the door.
[0029] The system includes a hook plate hinged to the mounting frame. One end of the hook plate extends into the mounting frame and is hinged to a push rod that is movably connected to the frame. The other end of the hook plate extends through the mounting frame and connects to an upper guide wheel that is rotatably connected to the guide seat. As the door opens, the door moves the guide seat outwards, and the upper guide wheel slides along the end face of the hook plate, thus restricting the door's opening trajectory. This precise control of the door's movement trajectory prevents damage or interference to itself or surrounding items during opening, making it particularly suitable for the installation of embedded electrical equipment. To further restrict the door's opening path, a guide groove is provided through the end face of the mounting end. The hook plate is clamped in this guide groove, and its constraint and guidance within the mounting frame allow for more precise control of its movement along a specific trajectory, ensuring that the door does not unnecessarily interfere with other surrounding items during opening.
[0030] Furthermore, a limiting platform is provided at the end of the hook plate, which is tilted upwards. When the door is opened to the preset maximum angle, the upper guide wheel slides along the end face of the hook plate to the limiting platform. At this time, the upper guide wheel can no longer slide and then hooks with the limiting platform, preventing the door from opening further, thereby limiting the maximum opening angle of the door to a preset range.
[0031] The hook plate has both guiding and limiting functions. The door hinge does not require additional components for independent function control. Compared with simple collision-type limiting, it can more gently and firmly restrict the movement trajectory and maximum opening angle of the door, effectively preventing the door from being over-opened and causing damage to itself or surrounding items, thereby improving the impact resistance and service life of the door.
[0032] A spring is fitted around the push rod. One end of the spring presses against the inner wall of the spring platform in the mounting frame, while the other end presses against the end face of the push rod. The spring constantly exerts a pushing force on the push rod. When the door is open, the push rod is pulled by the hook plate, at which point the spring is compressed, generating a certain closing force for the subsequent closing of the door. When the door needs to be closed, the stored elastic pressure is released, pushing the push rod away from the spring platform, which is then transmitted to the hook plate, causing the hook plate to swing upward. Finally, through cooperation with the upper guide wheel, it generates the force to close the door. The closing force is stable and reliable, locking the door in the closed state, improving the door's sealing performance, and ensuring a reliable and tight connection between the door and the housing. This effectively prevents heat and steam leakage, improves the energy efficiency and cooking effect of the equipment, and enhances safety performance.
[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A type of cabinet door hinge, characterized in that: It includes a mounting frame (1) fixed on the box body and a guide seat (2) installed on the door body. A connecting arm (3) is hinged on the mounting frame (1). The guide seat (2) and the mounting frame (1) are connected by the connecting arm (3). The guide seat (2) and the connecting arm (3) swing around the hinge point on the mounting frame (1) to realize the opening and closing function of the door body. A push rod (5) is movably connected inside the mounting frame (1). The mounting frame (1) is also hinged with a hook plate (4). One end of the hook plate (4) extends into the mounting frame (1) and is connected to the push rod (5) that is movably connected therein. The other end passes through the mounting frame (1) and is connected to the upper guide wheel (6) in the guide seat (2). The upper guide wheel (6) is rotatably embedded in the guide seat (2). The upper guide wheel (6) slides along the end face of the hook plate (4) to restrict the movement trajectory of the door opening. The end face of the mounting frame (1) is provided with a guide groove (11), and the hook plate (4) is clamped in the guide groove (11); The push rod (5) is fitted with a spring (8), which always pushes the push rod (5) to move, causing the far end of the hook plate (4) to lift up. The hook plate (4) pushes the guide seat (2) to move in the direction of closing the door through the upper guide wheel (6).
2. A chest door hinge according to claim 1, wherein: The hook plate (4) is tilted upwards at one end to provide a limiting platform (41), and the upper guide wheel (6) is hooked onto the limiting platform (41) to limit the opening angle of the door.
3. A hinge for a chest door as defined in claim 1, wherein: One end of the push rod (5) is open and has a clamping groove (51), and the tail of the hook plate (4) is hinged in the clamping groove (51).
4. A hinge for a chest door as defined in claim 1, wherein: The mounting frame (1) is provided with a spring platform (9). One end of the spring (8) presses against the inner wall of the spring platform (9), and the other end presses against the end face of the push rod (5). The spring (8) generates a thrust, which pushes the hook plate (4) to swing upward through the push rod (5) to generate a closing force.
5. A box door hinge according to claim 1, wherein: The connecting arm (3) includes a buckle (31) and a plurality of interconnected safety plates (32). A mounting hole is provided through the safety plate (32). The buckle (31) holds the safety plate (32) therein and is hinged to the safety plate (32). One end of the safety plate (32) is recessed to form a buckle groove (321), and the buckle (31) is fastened in the buckle groove (321).