Combined cabinet door structure of high-low voltage cabinet

Abstract

The utility model provides a combined cabinet door structure of a high-low voltage cabinet, which comprises a cabinet body, a hinged lower cabinet door is arranged on one side of the cabinet body, a sliding upper cabinet door is arranged on the lower cabinet door, and a spring pin is arranged between the upper cabinet door and the lower cabinet door and is used for connecting and fixing the upper cabinet door with the lower cabinet door after the upper cabinet door is unfolded in a sliding manner; the two sides of the upper cabinet door are provided with a plurality of locking nuts, and the locking nuts penetrate through the upper cabinet door and are in threaded connection with the threaded holes in the cabinet body. The cabinet door structure and the locking mechanism of the high-low voltage cabinet not only improve the reliability and the operation convenience of equipment, but also remarkably enhance the safety, reduce the maintenance cost, adapt to wider application scenes, and reflect comprehensive technical progress and design optimization.

Description

Technical Field

[0001] The utility model relates to the field of high and low voltage cabinets, in particular to a combined cabinet door structure of the high and low voltage cabinets. Background Art

[0002] In the traditional design of high and low voltage cabinets, the cabinet doors generally adopt a single hinged opening method. Although this design is simple, it has the following obvious disadvantages in actual use:

[0003] Impact of frequent opening and closing: The hinges of hinged cabinet doors are prone to wear under long-term and frequent opening and closing operations, causing the cabinet doors to loosen, affecting the sealing and stability, and thus shortening the service life of the cabinet.

[0004] Inefficient space utilization: Hinged cabinet doors require a large amount of external space when opened, which is a disadvantage for work environments with limited space and limits the flexibility of equipment layout.

[0005] Safety issues: In some situations, such as maintenance and overhaul of high-voltage equipment, hinged doors cannot provide adequate isolation and protection, increasing operational risks.

[0006] Inconvenient operation: For equipment that requires frequent access, traditional hinged cabinet doors may need to be fully opened to access internal components, which is not only time-consuming and laborious, but also inconvenient to operate in a small space. Utility Model Content

[0007] The main purpose of the utility model is to provide a combined cabinet door structure of a high and low voltage cabinet to solve the problems in the above-mentioned background technology.

[0008] In order to solve the above technical problems, the technical solution adopted by the utility model is: comprising a cabinet body, a hinged lower cabinet door is provided on one side of the cabinet body, a sliding upper cabinet door is provided on the lower cabinet door, and a spring pin is provided between the upper cabinet door and the lower cabinet door for connecting and fixing the upper cabinet door with the lower cabinet door after the upper cabinet door slides and unfolds;

[0009] A plurality of locking nuts are arranged on both sides of the upper cabinet door, and the locking nuts pass through the upper cabinet door and are threadedly connected with threaded holes on the cabinet body.

[0010] Preferably, slide rails are fixedly provided on both sides of the lower cabinet door, and slide grooves are provided on both sides of the upper cabinet door, and the slide rails abut against the slide grooves.

[0011] Preferably, a stopper is fixedly provided on the top of the upper cabinet door, the stopper is arranged at the end of the slide groove, and the stopper abuts against the slide rail.

[0012] Preferably, one side of the lower cabinet door is hinged to the cabinet body via a plurality of hinges, and the other side is fixedly connected to the cabinet body via a flat lock.

[0013] Preferably, a handle is fixedly provided on the upper cabinet door.

[0014] Preferably, the fixing cylinder in the spring pin is fixed inside the lower cabinet door, a sliding pin shaft is arranged inside the fixing cylinder, and the pin shaft passes through the through holes on the lower cabinet door and the upper cabinet door.

[0015] Preferably, a limiting shaft is fixedly arranged at the end of the pin shaft, and the end of the limiting shaft passes through the fixing tube and is fixedly arranged with a limiting block;

[0016] A spring is arranged on the outer side of the limiting shaft, one end of the spring abuts against the pin shaft, and the other end abuts against the inside of the fixing cylinder.

[0017] The utility model provides a combined cabinet door structure for high and low voltage cabinets, which has the following beneficial effects:

[0018] 1. The combination of sliding upper cabinet doors and hinged lower cabinet doors reduces the burden on hinges, reduces wear and failure rate caused by frequent opening and closing, and extends the service life of the cabinet. The use of high-quality materials and precision processing technology ensures the durability of cabinet doors and accessories, especially the reliability of locking mechanisms such as spring pins.

[0019] 2. The lower cabinet door and the upper cabinet door can be opened independently or jointly, providing flexible operation mode. You can choose the most suitable opening mode according to your needs, which saves time and improves efficiency. The sliding upper cabinet door saves the external opening space required by the traditional hinged cabinet door, which is especially suitable for environments with limited space.

[0020] 3. Locking mechanisms such as spring pins ensure the stable fixation of the cabinet door, keeping the cabinet body completely closed even in harsh environments to prevent accidental opening. The independent sliding ability of the upper cabinet door allows the operator to open only the part that needs to be accessed, reducing unnecessary risk exposure and enhancing safety protection.

[0021] 4. The independent upper and lower cabinet doors are designed to facilitate quick location and handling of problems without having to fully open the entire cabinet, simplifying the maintenance process. The modular design of locking nuts, spring pins and other components facilitates replacement and maintenance, reducing maintenance costs and downtime. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0023] Figure 1 It is a front view of the overall structure of the utility model;

[0024] Figure 2 This utility model Figure 1 Schematic diagram of the lower cabinet door being unfolded;

[0025] Figure 3 It is a front cross-sectional view of the spring pin connection of the utility model;

[0026] In the figure: cabinet body 1; threaded hole 101; lower cabinet door 2; upper cabinet door 3; hinge 4; handle 5; heat dissipation grille 6; locking nut 7; spring pin 8; fixing cylinder 801; pin shaft 802; spring 803; limit shaft 804; plane lock 9; slide rail 10. DETAILED DESCRIPTION

[0027] like Figures 1 to 3 As shown, a combined cabinet door structure of a high and low voltage cabinet comprises a cabinet body 1, a hinged lower cabinet door 2 is provided on one side of the cabinet body 1, a sliding upper cabinet door 3 is provided on the lower cabinet door 2, and a spring pin 8 is provided between the upper cabinet door 3 and the lower cabinet door 2 for connecting and fixing the upper cabinet door 3 with the lower cabinet door 2 after the upper cabinet door 3 slides and unfolds;

[0028] A plurality of locking nuts 7 are provided on both sides of the upper cabinet door 3, and the locking nuts 7 pass through the upper cabinet door 3 and are threadedly connected with the threaded holes 101 on the cabinet body 1. The lower cabinet door 2 and the upper cabinet door 3 have different opening modes. By unlocking the plurality of locking nuts 7, the lower cabinet door 2 and the upper cabinet door 3 can be opened together, and the unlocking spring pin 8 slides the upper cabinet door 3 downward, so that only the upper part of the cabinet body 1 can be opened.

[0029] The cabinet 1 is the main body of the entire structure and is used to accommodate high-voltage and low-voltage electrical equipment or other devices that require isolation protection.

[0030] The lower cabinet door 2 is connected to the cabinet body 1 through a hinge and can be opened and closed like an ordinary cabinet door, providing protection and isolation for the equipment below.

[0031] The upper cabinet door 3 is a slidable structure and can slide on the lower cabinet door, so that the equipment or components on the upper part can be accessed without fully opening the entire cabinet door.

[0032] The spring pin 8 is located between the upper cabinet door and the lower cabinet door. When the upper cabinet door slides to a specific position, the spring pin will pop out and lock the two together, ensuring that the upper cabinet door 3 and the lower cabinet door 2 can be opened synchronously.

[0033] The locking nuts 7 are arranged on both sides of the upper cabinet door, pass through the upper cabinet door and are connected with the threaded holes on the cabinet body, and are used to fix the upper cabinet door and the lower cabinet door. When all the locking nuts are unlocked, the lower cabinet door and the upper cabinet door can be opened as a whole.

[0034] Preferably, the lower cabinet door 2 is fixed with a slide rail 10 on both sides, and the upper cabinet door 3 is provided with a slide groove on both sides, and the slide rail 10 abuts against the slide groove. The upper cabinet door 3 slides on the slide rail 10 through the slide groove, and the sliding is smoother and more reliable.

[0035] The design of the rails and slots reduces the friction when the upper cabinet door slides, making operation easier and reducing noise. The combination of the rails and slots ensures the straightness and stability of the upper cabinet door during sliding, avoiding jamming caused by shaking or offset. With precision-machined rails and slots, the system can maintain good performance even after long-term use and multiple sliding, extending the service life of the cabinet door. The close combination of rails and slots reduces the risk of accidental falling off of the upper cabinet door during sliding and enhances the stability of the overall structure.

[0036] Preferably, a stopper is fixedly provided on the top of the upper cabinet door 3, the stopper is arranged at the end of the slide groove, and the stopper abuts against the slide rail 10. When the upper cabinet door 3 slides downward, the stopper abuts against the slide rail 10 for limiting and fixing.

[0037] The stopper prevents the upper door from sliding excessively, ensuring that it stays at the predetermined lowest position, preventing the upper door from completely falling off the slide rail, and increasing safety. When the upper door slides downward, the stopper contacts the slide rail, providing a stable support point for the upper door, preventing it from shaking or tilting under the action of gravity, and ensuring the stability of the door structure.

[0038] The choice of stopper material, such as rubber or soft plastic, can absorb the impact when the upper cabinet door slides into place, reduce noise and vibration, and extend the life of mechanical components.

[0039] Preferably, one side of the lower cabinet door 2 is hinged to the cabinet body 1 via a plurality of hinges 4 , and the other side is fixedly connected to the cabinet body 1 via a flat lock 9 .

[0040] One side of the lower door is hinged to the cabinet body through multiple hinges, which allow the door to rotate around its axis to achieve opening and closing. The number and strength of the hinges depend on the size, weight and expected frequency of use of the door to ensure smooth and durable use of the door.

[0041] On the other side of the lower cabinet door, a flat lock is used to fix it to the cabinet body. A flat lock is a common type of lock that is used to fit two surfaces tightly together to prevent unauthorized opening. It usually consists of a lock body, a lock tongue, and a keyhole. When operating, the lock cylinder is turned by the key to extend or retract the lock tongue, thereby locking or unlocking the cabinet door.

[0042] The hinges and flat locks work together to ensure that the cabinet door will not be accidentally opened due to external force or vibration when closed, maintaining the integrity of the cabinet structure.

[0043] Preferably, a handle 5 is fixedly provided on the upper cabinet door 3, so that the handle 5 can be manually driven to move the upper cabinet door 3 up and down.

[0044] Preferably, the fixing cylinder 801 in the spring pin 8 is fixed inside the lower cabinet door 2, and a sliding pin shaft 802 is arranged inside the fixing cylinder 801, and the pin shaft 802 passes through the through holes on the lower cabinet door 2 and the upper cabinet door 3. The pin shaft 802 passes through the lower cabinet door 2 and the upper cabinet door 3 to achieve the connection and fixation between the two.

[0045] The pin 802 is located in the fixed cylinder 801 and can slide freely in the cylinder. One end of the pin matches with the through holes on the lower cabinet door 2 and the upper cabinet door 3. When the upper cabinet door slides to the correct position, the pin passes through the preset through holes on the lower cabinet door and the upper cabinet door, thereby locking the two doors together.

[0046] The movement of the pin 802 is controlled by a spring, which is located between the pin and the fixed cylinder. When the upper cabinet door 3 slides into place, the spring pushes the pin out to enter the through hole to complete the locking. When the lock needs to be released, the spring can be compressed manually or by other mechanisms to make the pin return to the fixed cylinder, so that the upper cabinet door can be easily moved.

[0047] Preferably, a limiting shaft 804 is fixedly disposed at the end of the pin shaft 802, and the end of the limiting shaft 804 passes through the fixing cylinder 801 and is fixedly disposed with a limiting block;

[0048] A spring 803 is disposed outside the limiting shaft 804 , one end of the spring 803 abuts against the pin shaft 802 , and the other end abuts against the inside of the fixing cylinder 801 .

[0049] The limit shaft 804 is fixed to one end of the pin shaft 802. Its function is to limit the maximum displacement of the pin shaft, ensuring that the pin shaft can only slide within a certain range under the action of the spring. The other end of the limit shaft passes through the outer wall of the fixed cylinder 801, and a limit block is fixed on it. The limit block is located outside the fixed cylinder 801 and is connected to one end of the limit shaft 804. Its function is to prevent the limit shaft from completely escaping from the fixed cylinder, and at the same time, it plays a positioning role when the pin shaft is reset.

[0050] The spring 803 is sleeved on the outside of the limiting shaft 804, with one end against the pin 802 and the other end against the inner wall of the fixed cylinder 801. The tension of the spring ensures that the pin is in an extended state, i.e., a locked state, when no external force is applied. When unlocking is required, external force is applied to compress the spring, so that the pin is retracted into the fixed cylinder, thereby releasing the lock.

[0051] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A combined cabinet door structure for high and low voltage cabinets, characterized by: The cabinet comprises a cabinet body (1), wherein a hinged lower cabinet door (2) is provided on one side of the cabinet body (1), a sliding upper cabinet door (3) is provided on the lower cabinet door (2), and a spring pin (8) is provided between the upper cabinet door (3) and the lower cabinet door (2) for connecting and fixing the upper cabinet door (3) to the lower cabinet door (2) after the upper cabinet door (3) is slid and unfolded; A plurality of locking nuts (7) are provided on both sides of the upper cabinet door (3), and the locking nuts (7) pass through the upper cabinet door (3) and are threadedly connected to threaded holes (101) on the cabinet body (1).

2. According to claim 1, a combined cabinet door structure of a high and low voltage cabinet is characterized in that: Slide rails (10) are fixedly arranged on both sides of the lower cabinet door (2), and slide grooves are arranged on both sides of the upper cabinet door (3), and the slide rails (10) are abutted against the slide grooves.

3. According to claim 2, a combined cabinet door structure of a high and low voltage cabinet is characterized in that: A stopper is fixedly provided on the top of the upper cabinet door (3), the stopper is arranged at the end of the slide groove, and the stopper abuts against the slide rail (10).

4. According to claim 1, a combined cabinet door structure of a high and low voltage cabinet is characterized in that: One side of the lower cabinet door (2) is hinged to the cabinet body (1) via a plurality of hinges (4), and the other side is fixedly connected to the cabinet body (1) via a flat lock (9).

5. According to claim 1, a combined cabinet door structure of a high and low voltage cabinet is characterized in that: A handle (5) is fixedly provided on the upper cabinet door (3).

6. According to claim 1, the combined cabinet door structure of the high and low voltage cabinet is characterized in that: The fixing cylinder (801) in the spring pin (8) is fixed inside the lower cabinet door (2), and a sliding pin shaft (802) is arranged inside the fixing cylinder (801), and the pin shaft (802) passes through through holes on the lower cabinet door (2) and the upper cabinet door (3).

7. The combined cabinet door structure of a high and low voltage cabinet according to claim 6 is characterized in that: A limiting shaft (804) is fixedly provided at the end of the pin shaft (802), and the end of the limiting shaft (804) passes through the fixing cylinder (801) and is fixedly provided with a limiting block; A spring (803) is provided on the outer side of the limiting shaft (804), one end of the spring (803) abuts against the pin shaft (802), and the other end abuts against the inside of the fixing cylinder (801).

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