Hinge device for opening and closing cabinet door

Abstract

The utility model relates to a hinge device for opening and closing a cabinet door. The hinge device comprises a hinging part, a spring assembly, a hinge arm and a connecting shaft, the hinge part comprises a mounting plate which is detachably fixed on the cabinet door, a first hinge seat which is integrally formed and fixed at the top end of the mounting plate, and a second hinge seat which is integrally formed and fixed at the bottom end of the mounting plate; the spring assembly comprises a first spring and a second spring, the upper end of the second spring is embedded in the first spring, the first spring is fixedly connected with the bottom end of the first hinge base, the top end of the second spring abuts against the bottom end of the first hinge base, and the bottom end of the second spring abuts against the top end of the second hinge base; one end of the hinge arm is connected with the first spring, and the other end is fixedly connected with the cabinet body; the connecting shaft penetrates through the first hinge base, the spring assembly and the second hinge base. The utility model has the advantages of easy opening and closing, increased opening and closing angle, improved connection stability and prolonged service life.

Description

Technical Field

[0001] This utility model relates to the field of new energy battery swapping, and in particular to a hinge device for opening and closing cabinet doors. Background Technology

[0002] With the rapid development of the new energy battery swapping field, the operational efficiency of battery swapping stations directly affects economic benefits, and the design of the cabinet door opening and closing has a significant impact on the battery swapping process. Currently, most battery swapping station equipment cabinet doors still use a traditional hinged opening structure, which prevents the cabinet doors from opening to their maximum extent, severely restricting battery swapping efficiency and user experience.

[0003] The existing technologies described above have the following drawbacks: Firstly, the limited range of motion of the hinges prevents the cabinet door from opening fully to its maximum angle, resulting in insufficient exposed space for internal components such as battery modules and wiring. Operators often have to repeatedly adjust their posture and move their positions due to limited operating space when inserting or removing batteries or inspecting equipment, significantly extending the time required for a single battery swapping operation. Secondly, ordinary hinges lack auxiliary opening and closing devices, relying entirely on manual labor for the opening process. Especially in frequent battery swapping scenarios, operators need to continuously exert force to open the heavy cabinet door, which is not only physically demanding but also prone to fatigue, thus reducing operational efficiency and accuracy. Furthermore, under long-term, high-frequency use, traditional hinges are prone to loosening and wear, causing the cabinet door to jam or even fail to close properly. This not only affects the smoothness of the battery swapping process but also poses safety hazards, potentially leading to equipment malfunction or battery exposure and damage. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a hinge device for opening and closing cabinet doors, which has the effects of easy opening and closing, increasing the opening and closing angle, improving connection stability and service life.

[0005] The above-mentioned utility model objective is achieved through the following technical solution:

[0006] A hinge device for opening and closing cabinet doors includes a hinge joint, a spring assembly, a hinge arm, and a connecting shaft.

[0007] The hinge part includes a mounting plate that can be detachably fixed to the cabinet door, a first hinge seat integrally formed and fixed to the top of the mounting plate, and a second hinge seat integrally formed and fixed to the bottom of the mounting plate.

[0008] The spring assembly includes a first spring and a second spring. The upper end of the second spring is embedded in the first spring. The first spring is fixedly connected to the bottom end of the first hinge seat. The top end of the second spring abuts against the bottom end of the first hinge seat, and the bottom end of the second spring abuts against the top end of the second hinge seat.

[0009] One end of the hinge arm is connected to the first spring, and the other end is fixedly connected to the cabinet.

[0010] The connecting shaft passes through the first hinge seat, the spring assembly, and the second hinge seat.

[0011] The above technical solution adopts a modular design by combining a hinge, a spring assembly, a hinge arm, and a connecting shaft, which facilitates installation and disassembly. The nested design of the spring assembly provides stable elastic assistance when the cabinet door is opened and closed, reduces opening and closing resistance, and helps the cabinet door to open to a larger angle. The hinge arm connects the cabinet body and the spring assembly to ensure stable opening and closing of the cabinet door. The connecting shaft runs through key components to ensure coaxial rotation of the device and avoid jamming.

[0012] As a further technical solution of this utility model: the mounting plate is provided with mounting holes.

[0013] The above technical solution enables quick assembly and disassembly of the hinge device and cabinet door, facilitating maintenance.

[0014] As a further technical solution of this utility model: the hinge arm includes a horizontal section and a first L-shaped bending section and a second L-shaped bending section integrally formed and fixed at both ends of the horizontal section;

[0015] The first L-shaped bend fits against the cabinet door and is connected to the starting end of the first spring near the first hinge seat.

[0016] The second L-shaped bend extends to the inside of the cabinet and is fixedly connected to the cabinet.

[0017] Through the above technical solution, the L-shaped bending structure at both ends of the hinge arm reduces interference with other components of the cabinet and cabinet door, makes reasonable use of the installation space, and creates conditions for the cabinet door to open to a larger angle; it increases the connection area with the spring and cabinet, disperses the opening and closing stress, improves the overall structural stability, extends the service life of the device, and ensures the reliability of the cabinet door when opening and closing at a large angle.

[0018] As a further technical solution of this utility model: the helix pitch of the first spring is smaller than that of the second spring, and the wire diameter of the first spring is larger than that of the second spring.

[0019] Through the above technical solution, the differentiated design of the helical pitch and wire diameter of the first and second springs results in different stiffnesses. During the opening and closing process, the first spring provides a large elastic force to start the cabinet door, while the second spring intervenes later to provide buffering. The two work together to achieve a transition from rapid start-up to smooth operation of the cabinet door, optimizing the user experience and also helping the cabinet door to achieve a larger opening and closing angle.

[0020] As a further technical solution of this utility model: the bottom end of the connecting shaft is detachably and fixedly connected to a base, and the base abuts against the bottom surface of the second hinge seat.

[0021] Through the above technical solution, the base abuts against the bottom surface of the second hinge seat, restricting the axial displacement of the connecting shaft to prevent it from coming out of the hinge device, ensuring the stability of the device when the cabinet door is opened and closed, ensuring the structural stability of the hinge device, avoiding jamming when the cabinet door is opened and closed, and extending its service life.

[0022] In summary, this utility model has at least one of the following beneficial technical effects:

[0023] 1. This utility model discloses a hinge device for opening and closing cabinet doors. Through the detachable installation of the hinge part, the nested design of the spring assembly, the hinge arm connecting the cabinet body and the spring assembly, and the connecting shaft passing through key components, the hinge device can be conveniently installed and maintained, provide stable elastic support, effectively transmit force and ensure coaxial rotation, and help increase the opening and closing angle of the cabinet door.

[0024] 2. This utility model discloses a hinge device for opening and closing cabinet doors. It has mounting holes in the mounting plate to enable the hinge device to be widely adapted to cabinet doors of different materials and thicknesses, thus meeting the needs for flexible installation and positioning.

[0025] 3. This utility model discloses a hinge device for opening and closing cabinet doors. Through the L-shaped bending structure at both ends of the hinge arm and the differentiated design of the spring assembly, it optimizes space utilization, enhances connection stability, and optimizes the spring force characteristics, making the cabinet door open and close more smoothly and adaptable to different working conditions. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the cabinet including the hinge device in Embodiment 1 of this utility model.

[0027] Figure 2 This is a three-dimensional structural diagram of the hinge device in Embodiment 1 of this utility model.

[0028] Figure 3 This is an exploded view of the hinge device in Embodiment 1 of this utility model.

[0029] Figure 4 This is a top view of the hinge arm in Embodiment 1 of this utility model.

[0030] Figure 5 This is a schematic diagram of the overall structure of the cabinet door in its open and closed state, based on existing technology.

[0031] Reference numerals: 1. Hinge; 11. Mounting plate; 111. Mounting hole; 12. First hinge seat; 13. Second hinge seat; 2. Spring assembly; 21. First spring; 22. Second spring; 3. Hinge arm; 31. Horizontal section; 32. First L-shaped bend section; 33. Second L-shaped bend section; 4. Connecting shaft; 41. Base; 5. Cabinet door; 6. Cabinet body. Detailed Implementation

[0032] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0033] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] Example 1:

[0036] Reference Figure 1 The present invention discloses a hinge device for opening and closing cabinet doors, comprising a hinge part 1, a spring assembly 2, a hinge arm 3, and a connecting shaft 4.

[0037] The hinge part 1 includes a mounting plate 11 that is detachably fixed to the cabinet door 5, a first hinge seat 12 integrally formed and fixed to the top of the mounting plate 11, and a second hinge seat 13 integrally formed and fixed to the bottom of the mounting plate 11. The first hinge seat 12 and the second hinge seat 13 are integrally formed with the mounting plate 11, and the forming process adopts the die casting process to ensure structural strength and stability.

[0038] The hinge arm 3 is a key load-bearing connection component for the opening and closing of the cabinet door 5. Its main functions are to transmit force and movement, support the weight of the cabinet door 5, and guide the opening and closing trajectory of the cabinet door 5. The hinge arm 3 can be made of high-strength and rigid metal materials, such as stainless steel, carbon steel, or aluminum alloy. These materials can withstand large loads and ensure the stability and reliability of the opening and closing of the cabinet door 5.

[0039] The mounting plate 11 has mounting holes 111, which facilitates fixing the hinge part 1 to the cabinet door 5 with screws or other connectors, thereby enhancing the versatility and installation flexibility of the device.

[0040] The mounting plate 11, the first hinge seat 12, and the second hinge seat 13 can be made of high-strength engineering plastics or metal alloys to ensure that they have sufficient strength and corrosion resistance and can be fixed stably on the cabinet door 5 for a long time.

[0041] The spring assembly 2 includes a first spring 21 and a second spring 22. The upper end of the second spring 22 is embedded in the first spring 21. The first spring 21 is fixedly connected to the bottom end of the first hinge seat 12. The top end of the second spring 22 abuts against the bottom end of the first hinge seat 12. The bottom end of the second spring 22 abuts against the top end of the second hinge seat 13.

[0042] Through this nested spring design, the spring assembly 2 can provide phased elastic assistance during the opening and closing of the cabinet door 5, making the opening and closing of the cabinet door 5 easier and smoother. In the initial stage of opening the cabinet door 5, the first spring 21 with high stiffness provides greater elastic force to assist in starting. As the cabinet door 5 opens, the second spring 22 gradually comes into play, supplementing with gentle elastic force to achieve smooth opening and closing.

[0043] The first spring 21 and the second spring 22 can be made of high-quality spring steel and undergo special heat treatment and surface galvanizing and nickel plating to improve the elastic modulus and fatigue resistance of the springs and prevent rust and corrosion.

[0044] The bottom ends of the first spring 21 and the first hinge seat 12 can be connected by welding or high-strength bolts to ensure a firm and reliable connection; the contact surfaces of the second spring 22 with the first hinge seat 12 and the second hinge seat 13 can be treated with anti-slip treatment, such as adding rubber pads or knurling, to prevent the spring from sliding during operation.

[0045] Furthermore, the helix pitch of the first spring 21 is smaller than that of the second spring 22, and the wire diameter of the first spring 21 is larger than that of the second spring 22. This parameter design results in the first spring 21 having higher stiffness and the second spring 22 having relatively lower stiffness. The helix pitch of the first spring 21 can be adjusted between 2mm and 5mm, and the wire diameter can be selected between 3mm and 6mm; the helix pitch of the second spring 22 can be adjusted between 5mm and 10mm, and the wire diameter can be selected between 1mm and 3mm. By reasonably combining these parameters, the personalized needs of different users for the opening and closing force and feel of the cabinet door can be met.

[0046] Reference Figure 3 and Figure 4 One end of the hinge arm 3 is connected to the first spring 21, and the other end is fixedly connected to the cabinet body 6. The hinge arm 3 includes a horizontal section 31 and a first L-shaped bending section 32 and a second L-shaped bending section 33 integrally formed and fixed at both ends of the horizontal section 31. The first L-shaped bending section 32 fits against the cabinet door 5 and is connected to the starting end of the first spring 21 near the first hinge seat 12. The second L-shaped bending section 33 extends to the inside of the cabinet body 6 and is fixedly connected to the cabinet body 6. This structural design not only reduces the interference between the hinge arm 3 and the cabinet door 5 and other parts of the cabinet body 6, making full use of the installation space, but also effectively increases the connection area between the hinge arm 3 and the spring and the cabinet body 6, enhances the connection stability, and provides the possibility for the cabinet door 5 to achieve a larger opening and closing angle.

[0047] Reference Figure 4 The bending angles of the first L-shaped bend 32 and the second L-shaped bend 33 can be optimized according to the actual installation space and the opening and closing requirements of the cabinet door 5. When the installation space is relatively ample, the angle of the first L-shaped bend 32 can be appropriately increased to between 90° and 100° to better connect the first spring 21 and transmit force. The angle of the second L-shaped bend 33 can be appropriately increased according to the structure and installation requirements of the cabinet body 6. To enable the cabinet door to open and close at a large angle, the bending angle of the second L-shaped bend 33 can generally be adjusted between 100° and 120° to ensure that the hinge arm does not obstruct the rotation of the cabinet door 5 during opening, allowing the hinge arm to be firmly fixed to the cabinet body 6. At the same time, the bending dimensions should also be reasonably matched according to the dimensions of the spring assembly 2 and the cabinet body 6 to ensure the best connection effect and space utilization efficiency.

[0048] In addition, reinforcing ribs or thickened plates can be provided on the inner side of the L-shaped bends of the first L-shaped bend section 32 and the second L-shaped bend section 33 to improve the structural strength and rigidity of the hinge arm 3 and prevent deformation or damage during long-term use.

[0049] In addition, the surface of the hinge arm 3 can be treated with anti-corrosion and wear-resistant coatings, such as spraying anti-corrosion paint or electrophoretic coating, to improve its service life and appearance quality in different environments.

[0050] The connecting shaft 4 passes through the first hinge seat 12, the spring assembly 2, and the second hinge seat 13, providing a stable rotation axis for the entire device. This ensures that all components can rotate smoothly and steadily around the same axis, reducing jamming and noise.

[0051] The top end of the connecting shaft 4 is welded to the top end of the cabinet door 5. The bottom end of the connecting shaft 4 is detachably and fixedly connected to a base 41, for example, by a threaded connection. The top surface of the base 41 abuts against the bottom surface of the second hinge seat 13 to prevent the connecting shaft 4 from falling out of the device. The base 41 is disc-shaped, and its diameter is larger than that of the connecting shaft 4. It abuts against the bottom surface of the second hinge seat 13 to prevent the connecting shaft 4 from coming out of the second hinge seat 13, the spring assembly 2, and the first hinge seat 12, thus ensuring the stability of the hinge device structure.

[0052] The surface of the connecting shaft 4 should be precision machined to ensure that its diameter tolerance and surface roughness meet high precision requirements, so as to ensure the fitting accuracy with each component and reduce friction and wear during rotation.

[0053] The principle of this invention is as follows: During the opening and closing of the cabinet door 5, the spring assembly 2 utilizes the different stiffness characteristics of the first spring 21 and the second spring 22 to achieve phased elastic assistance. When the cabinet door 5 is opened, the first spring 21 quickly provides a large elastic force to start the cabinet door 5, and then the second spring 22 intervenes to supplement the elastic force, making the opening and closing of the cabinet door 5 extremely easy, even for users with less strength. Due to the special structural design of the hinge arm 3, the cabinet door 5 can achieve a larger opening and closing angle, greatly increasing the utilization rate of the internal space of the cabinet 6 compared to traditional hinge devices. After long-term use testing, the connections of all components of the hinge device are stable, with no loosening or wear issues, and the service life is significantly improved.

[0054] Reference Figure 5 Traditional hinge devices, due to their structural limitations, typically have a small opening angle for cabinet doors 5. In actual use, cabinet doors 5 cannot be fully opened, resulting in insufficient exposure of the internal space of the cabinet 6. This severely affects operators' ability to inspect, maintain, and access equipment and items inside the cabinet. For example, in new energy battery swapping equipment, the narrow opening angle makes battery module replacement extremely inconvenient, significantly increasing the time and cost of battery swapping.

[0055] Reference Figure 1This utility model, through the innovative combination of hinge part 1, spring assembly 2, hinge arm 3 and connecting shaft 4, creates conditions for the cabinet door 5 to open to a larger angle, which greatly facilitates the operator to operate the equipment inside the cabinet from all angles, significantly improves work efficiency, and shows great advantages in scenarios such as new energy battery swapping where operation time is critical.

[0056] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A hinge device for opening and closing cabinet doors, characterized in that, It includes a hinge (1), a spring assembly (2), a hinge arm (3), and a connecting shaft (4); The hinge part (1) includes a mounting plate (11) that is detachably fixed to the cabinet door (5), a first hinge seat (12) integrally formed and fixed to the top of the mounting plate (11), and a second hinge seat (13) integrally formed and fixed to the bottom of the mounting plate (11). The spring assembly (2) includes a first spring (21) and a second spring (22). The upper end of the second spring (22) is embedded in the first spring (21). The first spring (21) is fixedly connected to the bottom end of the first hinge seat (12). The top end of the second spring (22) abuts against the bottom end of the first hinge seat (12). The bottom end of the second spring (22) abuts against the top end of the second hinge seat (13). One end of the hinge arm (3) is connected to the first spring (21), and the other end is fixedly connected to the cabinet (6); The connecting shaft (4) passes through the first hinge seat (12), the spring assembly (2), and the second hinge seat (13).

2. The hinge device for opening and closing cabinet doors according to claim 1, characterized in that, The mounting plate (11) has mounting holes (111).

3. A hinge device for opening and closing cabinet doors according to claim 1, characterized in that, The hinge arm (3) includes a horizontal section (31) and a first L-shaped bent section (32) and a second L-shaped bent section (33) integrally formed and fixed at both ends of the horizontal section (31); The first L-shaped bend (32) fits against the cabinet door (5) and is connected to the starting end of the first spring (21) near the first hinge seat (12). The second L-shaped bend (33) extends to the inside of the cabinet (6) and is fixedly connected to the cabinet (6).

4. A hinge device for opening and closing cabinet doors according to claim 1, characterized in that, The pitch of the first spring (21) is less than that of the second spring (22), and the wire diameter of the first spring (21) is greater than that of the second spring (22).

5. A hinge device for opening and closing cabinet doors according to claim 1, characterized in that, The bottom end of the connecting shaft (4) is detachably and fixedly connected to a base (41), and the top surface of the base (41) abuts against the bottom surface of the second hinge seat (13).

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