Upturning type box door opening and closing hinge
The hinge mechanism with a spring mechanism addresses the instability and sealing issues of upper-hinged doors by providing automatic locking force, ensuring stable and tight closure without additional locking devices, enhancing safety and usability.
Patent Information
- Application Number
- CN202421304268.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-08
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-06-08
AI Technical Summary
The existing flip-up box door hinges lack locking force, resulting in unstable box doors and poor sealing performance, and the need to install additional door locking devices increases cost and complexity.
A flip-up box door opening and closing hinge is designed, using a hinged seat, a hinged arm and elastic devices (such as a torsion spring or a pull spring). Through a guide groove and a multi-axis connection structure, the box door is automatically locked and maintained stable when closed.
Automatic locking and stability of box doors when closed is achieved, sealing performance is improved, items are avoided from being exposed or falling, simplifying the structure and reducing costs.
Smart Images
Figure CN223104367U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a hardware hinge, specifically an upward-opening cabinet door opening and closing hinge. Background Art
[0002] In modern household and industrial equipment, upward-opening cabinet doors are widely used in various storage cabinets, tool boxes and electrical equipment. Due to its convenient opening and closing characteristics, the upward-opening cabinet door is favored by users. However, there are still some problems and deficiencies in the upward-opening cabinet door hinges on the market in actual use, which affect the user experience and product performance.
[0003] The existing upward-opening hinge has a simple structure and usually relies on the self-weight of the cabinet door to close. However, this design has significant defects:
[0004] 1. Since it relies on self-weight to close, there is no additional locking force to ensure its stability after the cabinet door is closed. In this case, the cabinet door is likely to open due to vibration, tilt or external force, resulting in the exposure or falling of the items inside the cabinet, seriously affecting the use safety and product reliability.
[0005] 2. Due to the lack of locking force, the cabinet door cannot fit tightly against the cabinet body, resulting in easy leakage of the cabinet body. For example, in applications such as dust-proof, waterproof or fire-proof, the cabinet door with poor sealing performance cannot provide sufficient protection, reducing the use effect of the product.
[0006] 3. In order to make up for the problem of insufficient locking force of the hinge, it is usually necessary to additionally install a door locking device on the cabinet door. This not only increases the cost and complexity of the product, but also affects the aesthetics and use convenience of the cabinet door. Therefore, it is necessary to make further improvements. Summary of the Utility Model
[0007] The purpose of the utility model is to overcome the defects of the existing technology and provide an upward-opening cabinet door opening and closing hinge with a simple structure, convenient use, which can effectively solve the problems of lack of locking force and poor sealing performance in the existing technology, and does not require additional installation of a door locking device.
[0008] The purpose of the utility model is achieved in the following way: an upward-opening cabinet door opening and closing hinge, which comprises a hinge seat and a hinge arm. The hinge arm is rotatably hinged and installed in a first hinge hole inside the hinge seat through a first hinge shaft. A first guide groove is arranged on the hinge seat, and a second hinge shaft fixedly installed on the hinge arm is slidably installed in the first guide groove;
[0009] The second hinge shaft is also hingedly installed with a pulling arm. The other end of the pulling arm is connected with a third hinge shaft, and the third hinge shaft slides in a second guiding groove on the hinge seat. An elastic device is arranged between the third hinge shaft and the hinge seat, and the elastic device pushes the pulling arm towards the hinge arm direction all the time through the third hinge shaft.
[0010] Further: The elastic device is a torsion spring. The torsion spring is installed in the hinge seat through a torsion spring shaft, and the supporting feet of the torsion spring respectively support on the hinge seat and the third hinge shaft to generate the power for pushing the third hinge shaft to move.
[0011] Further: The elastic device is a tension spring. One end of the tension spring is hooked on the third hinge shaft, and the other end is hooked on the hinge seat. The tension spring generates an elastic pulling force to push the third hinge shaft to move.
[0012] Further: The first guiding groove is an arc groove, and the center of the arc groove is concentric with the center of the first hinge hole.
[0013] Further: The second guiding groove is a long waist-shaped groove and extends along the horizontal direction.
[0014] Further: The cross section of the hinge seat is arranged as an opening groove in an "n" shape, and connecting ears extend from the bottom of the hinge seat to its two outer sides.
[0015] Further: There are two front and rear pulling arms, and the two pulling arms are connected into a whole through a connecting arm.
[0016] Further: Reinforcing ears are bent outwards on both sides of the hinge arm, and the first hinge hole is arranged on the reinforcing ear.
[0017] Further: A second hinge hole is also arranged on the reinforcing ear, and the second hinge shaft is installed in the second hinge hole and connected with the pulling arm.
[0018] The beneficial effects of the utility model are as follows:
[0019] The structure is simple, the production cost is low, and the market competitiveness is improved.
[0020] 2. By introducing an elastic device (such as a torsion spring or a tension spring) into the hinge structure, the utility model enables the box door to automatically obtain a locking force when it is closed. The elastic device applies a thrust to the pulling arm through the third hinge shaft to ensure that the box door can closely fit the box body after being closed, and no additional door locking device is required. This design greatly improves the sealing performance of the box door and avoids problems such as the exposure or dropping of items caused by the loose closing of the box door.
[0021] 3. The hinge design in this utility model also has the function of maintaining the stability of the cabinet door in the open state. Through the precisely designed guide grooves and multi-axis connection structure, the cabinet door can remain in a predetermined position after being opened and will not accidentally close due to external forces or vibrations. This feature is particularly important for scenarios with frequent opening and closing. Users can access items conveniently without manually holding the cabinet door open.
[0022] 4. The sliding fit between the guide grooves in the hinge design and the hinge shafts enables the cabinet door to move stably and smoothly during the opening and closing process. The first guide groove and the second guide groove respectively control the movement directions and trajectories of different hinge shafts, ensuring that the cabinet door does not shake or jam during the opening and closing process, thus enhancing the user experience. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figures 1-3 It is a schematic diagram of the closing process of the hinge in this utility model.
[0024] Figure 4 、 5 It is an assembly drawing of the structure of this utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0025] The following further describes this utility model in detail with reference to the drawings. An up - turning cabinet door opening and closing hinge includes a hinge seat 1 and a hinge arm 2. The hinge arm 2 is rotatably hinged and installed in a first hinge hole 11 inside the hinge seat 1 through a first hinge shaft 3. A first guide groove 12 is provided on the hinge seat 1, and a second hinge shaft 21 fixedly installed on the hinge arm 2 is slidably installed in this first guide groove 12;
[0026] The second hinge shaft 21 is also hinged with a pull arm 4. The other end of the pull arm 4 is connected with a third hinge shaft 5. The third hinge shaft 5 slides in a second guide groove 22 on the hinge seat 1. An elastic device is provided between the third hinge shaft 5 and the hinge seat 1. The elastic device pushes the pull arm 4 towards the hinge arm 2 direction through the third hinge shaft 5 all the time.
[0027] In one embodiment: The elastic device is a torsion spring 6. The torsion spring 6 is installed inside the hinge seat 1 through a torsion spring shaft 61. The support feet of the torsion spring 6 respectively support on the hinge seat 1 and the third hinge shaft 5, generating the power to push the third hinge shaft 5 to move.
[0028] In one embodiment: The elastic device is a tension spring. One end of the tension spring is hooked on the third hinge shaft 5, and the other end is hooked on the hinge seat 1. The tension spring generates an elastic pulling force to push the third hinge shaft 5 to move.
[0029] In one embodiment: The first guide groove 12 is an arc groove, and the center of the arc groove is concentric with the center of the first hinge hole 11.
[0030] In one embodiment: the second guiding groove 22 is an oblong groove and is arranged to extend along the horizontal direction.
[0031] In one embodiment: the cross-section of the hinge seat 1 is arranged as an opening groove in the shape of "n", and connecting ears 13 extend from the bottom of the hinge seat 1 to both outer sides thereof.
[0032] In one embodiment: there are two front and rear pulling arms 4, and the two pulling arms 4 are connected into a whole through a connecting arm 41.
[0033] In one embodiment: reinforcing ears 23 are bent outwards on both sides of the hinge arm 2, and the first hinge hole 11 is arranged on the reinforcing ears 23.
[0034] In one embodiment: a second hinge hole 24 is further arranged on the reinforcing ears 23, and the second hinge shaft 21 is installed in the second hinge hole 24 and is connected with the pulling arm 4.
[0035] Working principle: In this case, taking the application of this hinge in an up-opening oven as an example for illustration, during installation, the hinge seat is installed on the box body, and the hinge arm is installed on the box door. The box door realizes up-flipping opening and closing through this hinge. During the door-opening operation, the user applies an external force to make the box door rotate around the first hinge shaft 3. The hinge arm 2 drives the first hinge shaft to slide in the first guiding groove 12. Since the first guiding groove is designed as an arc groove, it ensures that the hinge arm moves smoothly along the arc track during the door-opening process.
[0036] Meanwhile, the second hinge shaft 21 fixed on the hinge arm 2 slides in the first guiding groove, pulling one end of the pulling arm 4. The other end of the pulling arm is connected with a third hinge shaft 5, and the third hinge shaft slides in the second guiding groove 22, so that the pulling arm drives the third hinge shaft to move together.
[0037] During the door-opening process, the torsion spring is gradually compressed to store energy. At this time, when the hinge is opened to a certain extent, the second hinge shaft 21 slides in the first guiding groove 12 to a position below the horizontal line of the second guiding groove 22. At this time, the thrust generated by the torsion spring pushes the hinge arm outwards through the pulling arm to the fully open state. Among them, the elastic force of the torsion spring can be adjusted and selected so that its elastic force is balanced with the gravity of the box door, and thus it can be realized that the thrust of the torsion spring is used to ensure that the box door is in the normally open state after being opened, thereby facilitating the user to use the oven.
[0038] When the user closes the box door, the user applies an external force to make the box door rotate in the opposite direction around the first hinge axis. The articulated arm drives the first hinge axis to slide in the first guide groove and gradually returns to the initial position. When the second hinge axis 21 slides in the first guide groove 12 above the horizontal line of the second guide groove 22, at this time, the thrust generated by the torsion spring pushes the hinge arm outward through the pull arm to close it to the fully closed state. When the box door is completely closed, the thrust of the elastic device makes the box door fit tightly against the box body. The thrust applied by the torsion spring through the torsion spring shaft or the tension applied by the tension spring ensures the tight fit of the box door, increasing the sealing performance of the box door.
[0039] In summary, for the upward-opening box door opening and closing hinge of the present utility model, through reasonable structural design and component cooperation, the smooth movement and automatic locking of the box door during the opening and closing process are achieved, significantly improving the convenience and safety of using the box door, meeting various needs of users, and thus can be widely promoted and used.
[0040] Obviously, the above embodiments are only examples given for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the claims of the present utility model creation.
Claims
1. An upward-opening box door opening and closing hinge, characterized in that: It includes a hinge seat (1) and a hinge arm (2). The hinge arm (2) is rotatably hinged in a first hinge hole (11) inside the hinge seat (1) through a first hinge shaft (3). A first guide groove (12) is provided on the hinge seat (1), and a second hinge shaft (21) fixedly installed on the hinge arm (2) is slidably installed in the first guide groove (12). The second hinge shaft (21) is also hinged with a pull arm (4). The other end of the pull arm (4) is connected with a third hinge shaft (5). The third hinge shaft (5) slides in a second guide groove (22) on the hinge seat (1). An elastic device is arranged between the third hinge shaft (5) and the hinge seat (1), and the elastic device pushes the pull arm (4) towards the hinge arm (2) direction all the time through the third hinge shaft (5).
2. The up-turning box door opening and closing hinge according to claim 1, characterized in that: The elastic device is a torsion spring (6). The torsion spring (6) is installed inside the hinge seat (1) through a torsion spring shaft (61). The support feet of the torsion spring (6) are respectively supported on the hinge seat (1) and the third hinge shaft (5) to generate the power to push the third hinge shaft (5) to move.
3. The up-turning box door opening and closing hinge according to claim 1, characterized in that: The elastic device is a tension spring. One end of the tension spring is hooked on the third hinge shaft (5), and the other end is hooked on the hinge seat (1). The elastic tension of the tension spring pushes the third hinge shaft (5) to move.
4. The up-turning box door opening and closing hinge according to claim 1, characterized in that: The first guide groove (12) is an arc groove, and the center of the arc groove is concentric with the center of the first hinge hole (11).
5. The up-turning box door opening and closing hinge according to claim 1, characterized in that: The second guide groove (22) is a long waist-shaped groove and extends along the horizontal direction.
6. The up-turning box door opening and closing hinge according to claim 1, characterized in that: The cross-section of the hinge seat (1) is arranged as an open groove in the shape of "n". The bottom of the hinge seat (1) extends outwards to both sides with connecting ears (13).
7. The up - turning box door opening and closing hinge according to claim 1, characterized in that: There are two front and rear pull arms (4), and the two pull arms (4) are connected into a whole through a connecting arm (41).
8. The up-turning box door opening and closing hinge according to claim 1, characterized in that: The two sides of the hinge arm (2) are bent outwards with reinforcing ears (23), and the first hinge hole (11) is arranged on the reinforcing ears (23).
9. The up-turning box door opening and closing hinge according to claim 8, characterized in that: A second hinge hole (24) is also arranged on the reinforcing ears (23), and the second hinge shaft (21) is installed in the second hinge hole (24) and connected with the pull arm (4).