Top-up door hinge safety mechanism

Abstract

A hinge safety mechanism of an upturning door comprises a base fixed in a cabinet body and a door seat fixed on a cabinet door, a first hinge arm and a second hinge arm are installed in the base in a hinged mode, the second hinge arm is hinged to the door seat through a third hinge arm and a fourth hinge arm, the other end of the first hinge arm is hinged to the middle of the third hinge arm, and the other end of the second hinge arm is hinged to the middle of the fourth hinge arm. A safety buckle is installed in the door seat in a hinged mode, one end of the safety buckle extends forwards to form a locking piece, a locking groove is formed in the third hinge arm, and when the hinge is in a closed state, the locking piece is inserted into the locking groove, the relative angle between the third hinge arm and the door seat is locked, and the door hinge is prevented from being opened under the non-operation condition.

Description

Technical Field

[0001] The utility model relates to a hardware hinge, in particular to a hinge safety mechanism for an upturned door. Background Art

[0002] Hinges are widely used in the installation of various doors, particularly furniture doors and household appliances, where they serve the crucial function of connecting the door to the cabinet. As a common hinge type, flip-up door hinges are particularly well-suited for furniture and appliances like cabinets and wall cabinets, as they allow the door to open upwards. However, existing flip-up door hinges still have significant drawbacks in their actual installation and operation, particularly potential safety hazards during installation.

[0003] Typical hinges for flip-up doors often incorporate springs or other actuators to ensure proper rebound during opening and closing. This spring mechanism effectively supports the door during normal use, ensuring smooth opening and closing. However, if an operator accidentally touches the hinge before installation is complete and the door panel is securely attached to the hinge base, the spring can quickly force it open. Without a door panel or other load attached to the base, the hinge lacks resistance and cushioning, allowing the powerful spring to quickly pop open. This can easily injure the operator's fingers and pose a significant safety risk.

[0004] Especially during the production and installation process, operators frequently adjust the hinge's position and angle. If they accidentally touch an unattached hinge, the built-in spring can cause it to suddenly open, resulting in pinching or abrasions. Existing hinge products often lack safety features to prevent this type of accidental opening, resulting in significant safety deficiencies. Therefore, further improvements are necessary. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide a hinge safety mechanism for an upturned door that is simple in structure, easy to use, and effectively prevents the hinge from being opened by accident before the installation is completed, thereby reducing the safety risks during the installation process and improving the safety of the operator.

[0006] The purpose of the utility model is achieved in the following way: a hinge safety mechanism for an upturned door, comprising a base fixed in a cabinet body, and a door seat fixed on the cabinet door, wherein a first hinge arm and a second hinge arm are hingedly mounted in the base, and the second hinge arm is hingedly connected to the door seat through a third hinge arm and a fourth hinge arm;

[0007] A four-bar linkage is formed between the second hinge arm, the third hinge arm and the fourth hinge arm and the door seat, and the hinge arms move relative to each other to achieve relative displacement between the door seat and the base;

[0008] The other end of the first hinge arm is hinged to the middle part of the third hinge arm, and a safety buckle is hingedly installed in the door seat. A locking plate is extended forward at one end of the safety buckle, and a locking groove is provided in the third hinge arm. When the hinge is in a closed state, the locking plate is inserted into the locking groove to lock the relative angle between the third hinge arm and the door seat, thereby preventing the door hinge from opening when not in operation.

[0009] In one of the embodiments: an elastic device is provided between the safety catch and the door seat, and the elastic device always pushes the safety catch to swing so that the locking plate is inserted into the locking groove.

[0010] In one embodiment, an elastic device is provided between the safety buckle and the door seat, which is a torsion spring between the door seat and the safety buckle.

[0011] In one embodiment, an elastic device is provided between the safety buckle and the door seat, which is a spring between the door seat and the safety buckle.

[0012] In one embodiment, a driving handle is extended backward from the tail of the safety buckle, and the driving handle is arranged to protrude from the end surface of the door seat.

[0013] In one embodiment, the surface of the safety buckle is provided with an anti-slip area.

[0014] The beneficial effects of the utility model are: 1. Simple structure, low production cost and improved market competitiveness.

[0015] 2. The flip-up door hinge of this utility model implements an effective safety feature by incorporating a safety catch and locking plate within the door base. When the hinge is closed, the locking plate of the safety catch engages with the locking groove on the third hinge arm, fixing the relative angle of the hinge. Even if the hinge is not fully installed, the spring force will prevent it from opening rapidly due to misoperation, significantly reducing the risk of injury to installers from accidentally touching the hinge and improving safety.

[0016] 3. By providing an elastic device, such as a torsion spring or ordinary spring, between the safety catch and the door seat, the present invention achieves an automatic reset and locking function for the safety catch. The elastic device constantly pushes the safety catch to swing, allowing the locking plate to naturally insert into the locking groove, thus improving the reliability of the safety mechanism.

[0017] 4. This utility model features a drive handle at the rear of the safety catch, allowing the user to manually unlock the door when needed. The drive handle protrudes from the door base, allowing the operator to directly control the opening and closing of the safety catch, further enhancing operational convenience. Furthermore, a non-slip area on the safety catch surface makes it easier to grip and prevent slipping, enhancing the safety and accuracy of the unlocking operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the hinge in the open state of the present invention.

[0019] Figure 2 This is a schematic diagram of the hinge closed state in the present invention.

[0020] Figure 3 This is a cross-sectional view of the structure of the utility model.

[0021] Figure 4 For this utility model Figure 3 A magnified view of the structure of part A.

[0022] Figure 5 This is the effect diagram of the safety buckle of the utility model after contact.

[0023] Figure 6 This is a structural exploded view of the utility model. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings. A hinge safety mechanism for an upturned door comprises a base 1 fixed within a cabinet body, and a door seat 2 fixed to the cabinet door. A first hinge arm 3 and a second hinge arm 4 are hingedly mounted within the base 1. The second hinge arm 4 is hingedly connected to the door seat 2 via a third hinge arm 5 and a fourth hinge arm 6.

[0025] A four-bar linkage is formed between the second hinge arm 4, the third hinge arm 5 and the fourth hinge arm 6 and the door seat 2. The hinge arms move relative to each other to achieve relative displacement between the door seat 2 and the base 1.

[0026] The other end of the first hinge arm 3 is hinged to the middle part of the third hinge arm 5. A safety buckle 7 is hingedly installed in the door seat 2. A locking piece 71 is extended forward at one end of the safety buckle 7. A locking groove 51 is provided in the third hinge arm 5. When the hinge is in a closed state, the locking piece 71 is inserted into the locking groove 51 to lock the relative angle between the third hinge arm 5 and the door seat 2, thereby preventing the door hinge from opening when not in operation.

[0027] Furthermore, an elastic device is provided between the safety buckle 7 and the door seat 2 , and the elastic device always pushes the safety buckle 7 to swing so that the locking piece 71 is inserted into the locking groove 51 .

[0028] Furthermore: an elastic device is provided between the safety buckle 7 and the door seat 2, which is a torsion spring between the door seat 2 and the safety buckle 7.

[0029] Furthermore: an elastic device is provided between the safety buckle 7 and the door seat 2 as a spring between the door seat 2 and the safety buckle 7.

[0030] Furthermore, a driving handle 72 is extended backward from the tail of the safety buckle 7 , and the driving handle 72 is arranged to protrude from the end surface of the door seat 2 .

[0031] Furthermore: the surface of the safety buckle 7 is provided with an anti-slip area 73.

[0032] Working Principle: The hinge safety mechanism for an upward-flipping door in this utility model primarily comprises a base 1 secured within the cabinet body, a door base 2 secured to the cabinet door, and components such as a first hinge arm 3, a second hinge arm 4, a third hinge arm 5, a fourth hinge arm 6, and a safety catch 7. These components are interconnected via hinged joints to form a four-bar linkage, enabling relative displacement between the door base 2 and the base 1, ensuring smooth upward opening and closing of the cabinet door.

[0033] When the hinge is not fully installed, the locking tab 71 in the safety catch 7 is automatically inserted into the locking slot 51 in the third hinge arm 5 by the elastic force of the elastic device. When the hinge is closed, the locking tab 71 and the locking slot 51 cooperate to fix the relative angle between the third hinge arm 5 and the door base 2, preventing the hinge from opening rapidly due to accidental operation when the hinge is not fully installed. This locking mechanism, which maintains the locked state through the elastic force of the elastic device, ensures that the hinge will not be accidentally ejected during transportation and installation, greatly improving installation safety.

[0034] To facilitate unlocking during installation, the rear end of the safety catch 7 extends rearward to form a drive handle 72. This drive handle 72 protrudes from the end face of the door base 2. During installation, the user grasps the door base and presses the drive handle to separate the locking plate from the locking groove, allowing the door hinge to open. Because this unlocking process is performed by the user, injuries caused by accidental opening are effectively avoided.

[0035] When the hinge is installed on the cabinet door, the cabinet door squeezes the drive handle to disengage the locking piece 71 from the locking groove 51, thereby unlocking the safety buckle 7. This design allows the hinge to enter normal working state at any time after installation without the need for additional complicated unlocking steps.

[0036] In summary, the flip door hinge safety mechanism of this utility model, through its rational locking and unlocking design, ensures safety during installation while achieving a simple and easy unlocking operation, and ensures the hinge's stability and reliability during normal use. This design not only improves the hinge's safety, but also enhances installation efficiency and operational convenience, and is therefore suitable for widespread adoption.

[0037] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention as claimed.

Claims

1. A hinge safety mechanism for an upturned door, comprising a base (1) fixed in a cabinet body, and a door seat (2) fixed on the cabinet door, wherein a first hinge arm (3) and a second hinge arm (4) are hingedly mounted in the base (1), and the second hinge arm (4) is hingedly connected to the door seat (2) via a third hinge arm (5) and a fourth hinge arm (6); A four-bar linkage is formed between the second hinge arm (4), the third hinge arm (5) and the fourth hinge arm (6) and the door seat (2), and the hinge arms move relative to each other to achieve relative displacement between the door seat (2) and the base (1); The other end of the first hinge arm (3) is hinged to the middle of the third hinge arm (5), and is characterized in that: A safety catch (7) is hingedly installed in the door seat (2), and a locking piece (71) is extended forward at one end of the safety catch (7). A locking groove (51) is provided in the third hinge arm (5). When the hinge is in a closed state, the locking piece (71) is inserted into the locking groove (51), locking the relative angle between the third hinge arm (5) and the door seat (2), thereby preventing the door hinge from opening when not in operation.

2. The hinge safety mechanism for an upturned door according to claim 1, characterized in that: An elastic device is provided between the safety buckle (7) and the door seat (2), and the elastic device always pushes the safety buckle (7) to swing, so that the locking piece (71) is inserted into the locking groove (51).

3. The hinge safety mechanism for an upturned door according to claim 2, characterized in that: An elastic device is provided between the safety buckle (7) and the door seat (2), which is a torsion spring between the door seat (2) and the safety buckle (7).

4. The hinge safety mechanism for an upturned door according to claim 2, characterized in that: An elastic device is provided between the safety buckle (7) and the door seat (2), which is a spring between the door seat (2) and the safety buckle (7).

5. The hinge safety mechanism for an upturned door according to any one of claims 1 to 4, characterized in that: A driving handle (72) is extended backward from the tail of the safety buckle (7), and the driving handle (72) is arranged to protrude from the end surface of the door seat (2).

6. The hinge safety mechanism for an upturned door according to claim 1, characterized in that: The surface of the safety buckle (7) is provided with an anti-slip area (73).

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