An upturning door body hinge with quick release function

Abstract

A kind of upturning door body hinge with quick release function, comprising: fixed frame, the fixed frame is used to fixed mounting box;Output shaft, the output shaft is rotatably installed in the fixed frame, is provided with outer connecting portion and inner connecting portion thereon;Drive arm, the drive arm is used to fixedly connected to door body, the end of the drive arm is provided with clamping portion, the clamping portion is detachably matched with the outer connecting portion of output shaft Connection;The outer connecting portion is the groove formed on the outer circumferential surface of output shaft, and the clamping portion is the clamping groove matched with groove.The utility model has the beneficial effects that: the clamping groove designed on the drive arm, the groove designed on the output shaft, the clamping groove and the groove are connected by interlocking, the door body can be quickly installed and disassembled, without tool and complicated operation, and the disassembly efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of door hinge technology, specifically an upward-opening door hinge with quick-release function. Background Technology

[0002] In modern homes and businesses, various appliances with upward-opening doors, such as ovens, electric griddles, electric frying pans, sterilizers, and some cabinets and display cases, have become an indispensable part of daily life. The doors of these appliances are typically connected to the main body via a set of upward-opening hinges, enabling the door to open, close, and lock. Traditional upward-opening door hinge structures usually use screws, pins, or welding to fix the door to the body.

[0003] However, existing upward-opening door hinges have the following significant drawbacks in practical use:

[0004] 1. When users need to clean, maintain, or replace the top-hinged door, or assemble it during the manufacturing process, the connection between the door and hinges, and between the hinges and the housing, is often secured with screws or other fasteners. Users typically need specialized tools such as screwdrivers and wrenches to disassemble or install the door. This process is not only time-consuming and laborious, but also difficult for ordinary users unfamiliar with the tools, easily causing inconvenience and potentially damaging the equipment due to improper operation. This inconvenience is particularly pronounced in scenarios where the product requires frequent disassembly for cleaning (such as the door cover of an electric griddle or frying pan) or transportation and installation (such as a large oven).

[0005] 2. Due to the difficulty in disassembling the door, users often find it challenging to thoroughly clean the accumulated dirt and grease inside the door or at the hinge connections during daily use. Long-term accumulation of dirt not only affects aesthetics but can also breed bacteria, which is especially important for food processing equipment where hygiene is paramount. Furthermore, the difficulty in disassembling also hinders hinge lubrication and component replacement, potentially shortening the lifespan of the hinges and even the entire piece of equipment.

[0006] 3. In the manufacturing process, the installation of traditional hinges typically requires workers to use tools to tighten screws one by one or perform other fixing operations. This results in low automation and severely impacts the assembly efficiency of the production line. For large-scale production, this inefficiency significantly increases production costs and labor input.

[0007] 4. Some traditional hinges may become loose after prolonged use or frequent disassembly, causing the door to wobble or even fall off unexpectedly during use, posing a certain safety hazard. Therefore, it is necessary to make further improvements to them. Utility Model Content

[0008] The purpose of this utility model is to overcome the shortcomings of existing technologies and provide a quick-release upward-opening door hinge that is simple in structure, low in manufacturing cost, allows for quick assembly and disassembly of the door, has a stable and reliable connection, is easy to maintain, and extends its service life.

[0009] The purpose of this utility model is achieved by the following method: a quick-release upward-opening door hinge, comprising: a fixed frame for fixing a housing; an output shaft rotatably mounted within the fixed frame, having an outer connecting part and an inner connecting part thereon; a drive arm for fixedly connecting to the door body, the end of the drive arm having a clamping part, the clamping part being detachably connected to the outer connecting part of the output shaft; the outer connecting part being a groove formed on the outer circumferential surface of the output shaft, and the clamping part being a clamping groove matching the groove.

[0010] The door hinge also includes a connecting arm, which is connected to the inner connection part of the output shaft to rotate synchronously with the output shaft; it also includes a pull arm, one end of which is hinged to the connecting arm; and it also includes a tension spring, which is connected between the other end of the pull arm and the fixed frame to drive the output shaft to rotate through the pull arm and the connecting arm.

[0011] The external connection portion is configured as one or more.

[0012] The external connecting part is configured as two symmetrically distributed grooves.

[0013] The clamping groove has an open bottom, and the two sides of the clamping groove are sloping outwards in a figure-eight shape.

[0014] The inner connecting part is a flat platform set on the output shaft, and the connecting arm is provided with a through hole that matches the shape of the flat platform.

[0015] The output shaft is also provided with a retaining ring groove; a retaining ring is installed in the retaining ring groove; a limit ring is fitted on the output shaft, and the limit ring is axially restricted between the connecting arm and the retaining ring.

[0016] The beneficial effects of this utility model are: 1. Simple structure, low manufacturing cost, and improved market competitiveness.

[0017] 2. The drive arm is designed with a clamping groove, and the output shaft is designed with a groove. The clamping groove and the groove are connected to each other in a snap-fit ​​manner, which allows the door to be installed and disassembled quickly without tools or complicated operations, resulting in high efficiency.

[0018] 3. During the disassembly and assembly of the door, it effectively protects the door from damage, extends the service life of the door and other components, and ensures that it maintains ideal installation strength and precision even during repeated and long-term disassembly and assembly.

[0019] 4. The quick-assembly and disassembly structure of the door reduces packaging and transportation costs, optimizes production, packaging and transportation processes, and avoids damage during transportation. Attached Figure Description

[0020] Figure 1 This is a rendering of the final assembly of this utility model.

[0021] Figure 2 In this utility model Figure 1 Enlarged view of point A.

[0022] Figure 3 This is an exploded view of the hinge and housing structure in this utility model.

[0023] Figure 4 This is an exploded view of the hinge and door structure in this utility model.

[0024] Figure 5 This is a schematic diagram of the hinge structure in this utility model.

[0025] Figure 6 This is an exploded view of the drive arm and the fixed frame in this utility model.

[0026] Figure 7 This is a schematic diagram of the output shaft and connecting arm in this utility model.

[0027] Figure 8 This is an exploded view of the output shaft and connecting arm in this utility model.

[0028] Figure 9 This is a schematic diagram of the output shaft in this utility model. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings. A quick-release, upward-opening door hinge includes: a fixed frame 2 for fixing a housing 10; an output shaft 3 rotatably mounted within the fixed frame 2, having an outer connecting part 31 and an inner connecting part 32 thereon; and a drive arm 4 for fixedly connecting to the door 11, the end of the drive arm 4 having a clamping part that is detachably connected to the outer connecting part 31 of the output shaft 3; the outer connecting part 31 is a groove formed on the outer circumferential surface of the output shaft 3, and the clamping part is a groove 41 that matches the groove.

[0030] In this case, a fixed frame is connected to the housing, and a drive arm is connected to the door. An output shaft is rotatably connected to the fixed frame, with its other end extending to connect to the drive arm, thus integrating the door and housing into one unit. An outer connecting part and an inner connecting part are respectively provided at both ends of the output shaft. To enable quick installation and removal of the door, a clamping part corresponding to the outer connecting part is provided on the drive arm, which is detachably connected to the output shaft. Furthermore, the outer connecting part is designed as a groove formed on the outer circumference of the output shaft, and the clamping part is a groove matching the groove shape. When the drive arm is installed, the clamping part embeds into these grooves, effectively limiting movement in both the radial and circumferential directions, preventing the drive arm from slipping or dislodging from the output shaft, and ensuring precise control of the door opening angle.

[0031] When the user needs to quickly disassemble the door, the clamping slot is aligned and inserted into the outside of the groove, and the door is easily installed. When the user needs to disassemble the door, the door is simply pulled outward, which separates the clamping slot of the drive arm from the groove, and the drive arm is quickly separated from the output shaft, thus achieving quick disassembly of the door.

[0032] The door hinge also includes a connecting arm 5, which is connected to the inner connecting part 32 of the output shaft 3 to rotate synchronously with the output shaft 3; it also includes a pull arm 6, one end of which is hinged to the connecting arm 5; and it also includes a tension spring 7, which is connected between the other end of the pull arm 6 and the fixed frame 2, and drives the output shaft 3 to rotate through the pull arm 6 and the connecting arm 5.

[0033] The door hinge structure also includes a connecting arm mounted to the inner connection of the output shaft, which rotates synchronously with the output shaft. When the door is closed, a pull arm hinged to the other end of the connecting arm stretches a tension spring, storing elastic potential energy. When the door begins to lift, the stored elastic potential energy is transmitted to the output shaft through the pull arm, causing the output shaft to rotate, releasing the stored energy of the tension spring, and generating a retracting force on the door. This force is transmitted to the connecting arm through the pull arm. Since the connecting arm and the inner connection of the output shaft are linked, this force is converted into an auxiliary torque that drives the output shaft to rotate. This torque helps the user offset part of the door's weight, thus achieving an easy and effortless lifting operation. When the door is closing and lowering, the tension spring always exerts a certain outward pushing force on the lowering door, reducing the door's weight and closing force, thereby achieving the purpose of buffering the door's descent.

[0034] The external connecting part 31 can be one or more. The external connecting part can be one or more. The groove serves as a positioning and locking reference, providing a clear engagement position for the clamping part of the drive arm. Users can select the external connecting part according to actual needs. The structure is clear and simple, durable, and not prone to wear, ensuring good connection tightness and reliability even after multiple disassemblies and reassemblies.

[0035] The external connecting part 31 is configured with two symmetrically distributed grooves. This design ensures that when the clamping groove engages with these symmetrical grooves, the clamping force on the output shaft is evenly distributed across both ends of the output shaft. This prevents the drive arm from generating uneven loads or overturning moments on the output shaft during torque transmission, resulting in more balanced force distribution and smoother, more stable operation of the door during upward tilting and hovering. Furthermore, the symmetrical structure eliminates the need to find a specific angle during installation, increasing the margin for error and simplifying operation. This design significantly enhances the balance and structural stability of the connection.

[0036] The clamping groove 41 has an open bottom, and its two sides are shaped like an outward-sloping V. The groove is designed with an open bottom, through which it is inserted and clamped outside the recess. Furthermore, the outward-sloping V-shape of the two sides of the groove provides a self-aligning and guiding function. During door installation, if the drive arm is not perfectly aligned, simply bringing the clamping groove close to the output shaft and applying pressure will guide the output shaft to automatically slide in and ultimately lock precisely into the correct position at the top of the groove. Simultaneously, the outward-sloping design utilizes the material's slight elastic deformation, creating a reliable clamping force after insertion. Even users without professional skills can perform quick installation; this tool-free, error-proof design greatly improves the user experience and installation efficiency.

[0037] The inner connecting part 32 is a flat platform mounted on the output shaft 3, and the connecting arm 5 is provided with a through hole 51 that matches the shape of the flat platform. The inner connecting plate is designed as a flat platform on the output shaft, and the connecting arm is designed with a through hole that matches the flat platform. When the connecting arm is mounted on the output shaft, the plane of the flat platform and the plane of the through hole are completely in contact, forming a surface contact. When the connecting arm is driven by the pull arm to swing, its torque is transmitted through the contact surface without any relative slippage. This effectively avoids the loosening or slippage that may occur when using fastening screws for connection, ensuring that the torque can be transmitted stably, efficiently, and without slippage, thereby ensuring the smoothness of the door's upward movement and the accuracy of the hovering position.

[0038] The output shaft 3 is also provided with a retaining ring groove 33; a retaining ring 8 is installed in the retaining ring groove 33; a limiting ring 9 is fitted on the output shaft 3, and the limiting ring 9 is axially restricted between the connecting arm 5 and the retaining ring. When assembling the door hinge, the connecting arm is first fitted onto the output shaft, then a limiting ring is fitted on it, and the elastic retaining ring is pried open with a tool. Then, the retaining ring is snapped into the retaining ring groove on the output shaft. Once the retaining ring is snapped in place, a reliable axial stop is formed, and the connecting arm is firmly clamped in the preset position, preventing axial movement. This enhances the long-term reliability of the hinge and effectively prevents the connecting arm from axially dislodging due to vibration or lateral force during long-term, repeated opening and closing of the door. This ensures that the connecting arm is always in the most ideal working position, thereby guaranteeing the stability of the hinge performance and extending the service life of the door hinge.

[0039] In summary: First, the user installs the fixed frame in the housing and the drive arm in the door. Next, the user lifts the door, aligns the opening of the clamping slot of the drive arm with the outer connection of the output shaft, and presses down. The drive arm will automatically align and securely engage in the groove of the output shaft, thus achieving rapid installation of the door.

[0040] When the door needs to be opened, the tension spring compresses, transmitting the torque to the output shaft via the pull arm and connecting arm. Because the flat platform of the inner connecting part of the output shaft reliably engages with the through hole of the connecting arm, the torque is transmitted efficiently and without loss, thus lifting the door and allowing it to open easily. Furthermore, the symmetrical groove design of the outer connecting part ensures a smooth opening process for the entire door, preventing any shaking or wobbling.

[0041] During maintenance or replacement, users do not need any tools; simply pull the door body along with the drive arm outward to instantly separate it from the hinge body. The entire process does not touch or damage any screws on the door panel, perfectly protecting it. After repair or replacement, simply align and press again to restore it to its original state. In long-term use, the axial locking structure composed of the snap ring and limit ring ensures that the core force-transmitting components, such as the internal linkage arm, remain firmly in their designed positions, guaranteeing the hinge's long-term durability and performance stability, thus allowing for widespread use.

[0042] 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 flip-up door hinge with quick-release function, characterized in that: include: Fixed frame (2), the fixed frame (2) is used to fix the box body (10); Output shaft (3), which is rotatably mounted in the fixed frame (2), and is provided with an outer connecting part (31) and an inner connecting part (32). Drive arm (4), the drive arm (4) is fixedly connected to the door body (11), the end of the drive arm (4) is provided with a clamping part, the clamping part is detachably connected to the outer connecting part (31) of the output shaft (3); The external connecting part (31) is a groove formed on the outer peripheral surface of the output shaft (3), and the clamping part is a clamping groove (41) that matches the groove.

2. The upward-opening door hinge with quick-release function according to claim 1, characterized in that: The door hinge also includes a connecting arm (5), which is connected to the inner connecting part (32) of the output shaft (3) to rotate synchronously with the output shaft (3); It also includes a pull arm (6), one end of which is hinged to the connecting arm (5); It also includes a tension spring (7), which is connected between the other end of the pull arm (6) and the fixed frame (2) to drive the output shaft (3) to rotate via the pull arm (6) and the connecting arm (5).

3. The upward-opening door hinge with quick-release function according to claim 1, characterized in that: The external connection part (31) is configured as one or more.

4. The upward-opening door hinge with quick-release function according to claim 1, characterized in that: The external connecting part (31) is configured as two symmetrically distributed grooves.

5. A quick-release upward-opening door hinge according to claim 1, characterized in that: The clamping groove (41) has an open bottom, and the two sides of the clamping groove (41) are in an outwardly inclined figure-eight shape.

6. A quick-release upward-opening door hinge according to claim 2, characterized in that: The inner connecting part (32) is a flat platform set on the output shaft (3), and the connecting arm (5) is provided with a through hole (51) that matches the shape of the flat platform.

7. A quick-release upward-opening door hinge according to claim 2, characterized in that: The output shaft (3) is also provided with a retaining ring groove (33); a retaining ring (8) is installed in the retaining ring groove (33); a limiting ring (9) is fitted on the output shaft (3), and the limiting ring (9) is axially restricted between the connecting arm (5) and the retaining ring.

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