Universal key for high-voltage cabinet door

Abstract

The utility model discloses a universal key for a high-voltage cabinet door, which belongs to the technical field of electrical equipment and comprises an electromagnetic lock key head arranged at one end of a main key rod and used for unlocking an electromagnetic lock. The top of the end, away from the electromagnetic lock key head, of the main key rod is hinged to a first auxiliary key rod which can be folded up and down and is provided with a first auxiliary key head, a second auxiliary key rod which can be folded back and forth, is perpendicular to the main key rod and is provided with a second auxiliary key head is hinged to the rear side of one end, far away from the electromagnetic lock key head, of the main key rod; meanwhile, a third auxiliary key rod which can be folded back and forth, is perpendicular to the main key rod and is provided with a third auxiliary key head is hinged to the front side of one end, far away from the electromagnetic lock key head, of the main key rod. According to the utility model, the key heads for opening different high-voltage cabinet doors are arranged on the different key rods, so that keys for opening various high-voltage cabinet doors are integrated; and meanwhile, when the folding chair is not used and is in a folded state, the occupied space can be reduced as much as possible.

Description

Technical Field

[0001] This utility model belongs to the field of electrical equipment technology, specifically relating to a universal key for a high-voltage cabinet door. Background Art

[0002] High-voltage switchgear refers to electrical products used in power systems for power generation, transmission, distribution, power conversion and consumption, which play the roles of switching, control or protection, with voltage levels ranging from 3.6kV to 550kV. It mainly includes several categories such as high-voltage circuit breakers, high-voltage disconnecting switches and grounding switches, high-voltage load switches, high-voltage automatic reclosers and sectionalizers, high-voltage operating mechanisms, high-voltage explosion-proof power distribution devices and high-voltage switchgear.

[0003] In power systems, high-voltage switchgear is a crucial electrical device used to control and protect power lines and equipment. In recent years, our company has installed several new high-voltage rooms, each with various types of door keys. During inspections, the front switchgear door needs to be opened for operations such as terminal temperature measurement. Maintenance and preventative testing require opening both the front and rear switchgear doors and electromagnetic locks. This necessitates carrying multiple keys to handle different situations. However, different manufacturers and models of high-voltage switchgear door locks and electromagnetic locks often differ, requiring specific keys to open them. This causes significant inconvenience for power maintenance personnel, requiring them to carry a large number of keys and increasing the risk of delays in maintenance due to missing keys. Utility Model Content

[0004] To address the problem that existing technologies require carrying a large number of keys to open high-voltage switchgear, causing inconvenience, this invention provides a universal key for high-voltage switchgear doors that integrates keys for opening various high-voltage switchgear doors and minimizes the space occupied when not in use.

[0005] The technical solution adopted by this utility model for a universal key for a high-voltage cabinet door is as follows:

[0006] A universal key for a high-voltage cabinet door includes an electromagnetic lock key head for opening an electromagnetic lock, located at one end of a main key bar; a first key bar with a first key head, which is hinged to the top of the end of the main key bar away from the electromagnetic lock key head and can be folded up and down and is aligned with the main key bar; a second key bar with a second key head, which is hinged to the rear side of the end of the main key bar away from the electromagnetic lock key head and can be folded back and forth and is perpendicular to the main key bar; and a third key bar with a third key head, which is hinged to the front side of the end of the main key bar away from the electromagnetic lock key head and can be folded back and forth and is perpendicular to the main key bar.

[0007] A further improvement of this utility model is that the main key bar, the first secondary key bar, the second secondary key bar, and the third secondary key bar are all made of a material that can be attracted by a magnet.

[0008] A further improvement of the above-mentioned technical solution of this utility model is that: a first magnet for attracting the first auxiliary key bar is provided on the top of the main key bar, a second magnet for attracting the second auxiliary key bar is provided on the rear side of the main key bar, and a third magnet for attracting the third auxiliary key bar is provided on the front side of the main key bar.

[0009] A further improvement of the above-mentioned technical solution of this utility model is that a magnetic shielding layer is provided between the first magnet, the second magnet and the third magnet and the main key bar.

[0010] A further improvement of this utility model is that: the first key head is a hexagonal prism with a side spacing of 8mm that mates with an M10 socket head cap screw; the second key head is a hexagonal prism with a side spacing of 6mm that mates with an M8 socket head cap screw; and the third key head is a cylinder with a diameter of 8.7mm and an inner hole, with protrusions on both sides of the end of the cylinder away from the third key shaft.

[0011] A further improvement of the above-mentioned technical solution of this utility model is that: the inner hole of the cylinder is opened at the end of the cylinder away from the third key bar, and the diameter of the inner hole is 5.3mm and the depth is 10mm.

[0012] A further improvement of the above-mentioned technical solution of this utility model is that the first, second, and third key bars can all be rotated to fit against the main key bar.

[0013] Due to the adoption of the above technical solution, the technical progress achieved by this utility model includes:

[0014] This invention integrates keys for opening various high-voltage cabinet doors by setting key heads on different key rods. Furthermore, since the first, second, and third key rods can all be rotated to engage with the main key rod, when not in use, they can be rotated to engage with the main key rod, thus minimizing the space occupied by this invention when not in use.

[0015] Meanwhile, the first, second, and third magnets in this invention enable the corresponding key bars to be attracted to the main key bar when they are attached to it, thus preventing the first, second, and third key bars from being unable to be fixed and thus making them difficult to carry.

[0016] The magnetic shielding layer in this invention prevents the first, second, and third magnets from repelling each other and becoming firmly installed on the main key bar. At the same time, it prevents the magnetism of the first, second, and third magnets from magnetizing the corresponding key bar and key head. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a universal key for a high-voltage cabinet door in use according to this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of a universal key for a high-voltage cabinet door when it is not in use;

[0019] Figure 3 This is a schematic diagram of the structure of a universal electromagnetic lock key head for a high-voltage cabinet door according to this utility model;

[0020] Figure 4 This is a structural schematic diagram of the third key head of a universal key for a high-voltage cabinet door according to this utility model.

[0021] In the attached diagram: 1. Main key bar; 11. Electromagnetic lock key head; 12. First magnet; 13. Third magnet; 14. Magnetic shielding layer; 15. Upper step; 16. Lower step;

[0022] 2. The first key shaft; 21. The first key head;

[0023] 3. Second key bar; 31. Second key head;

[0024] 4. Third key bar; 41. Third key head; 42. Protrusion;

[0025] 5. Hinges. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. In the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily obscuring the concept of this utility model.

[0027] First refer to Figure 1 , Figure 2 and Figure 3It is understood that this utility model includes a main key rod 1 made of a material that can be attracted by a magnet (such as iron, nickel, etc.). One end of the main key rod 1 is fixedly connected to an electromagnetic lock key head 11 for opening the electromagnetic lock on the high-voltage cabinet door. The electromagnetic lock key head 11 is a cylinder with a diameter of 5mm. Inside the cylinder, there is a cylindrical space with a diameter of 3mm and a depth of 10mm. The outside of the cylinder presents a protruding stepped shape with a height and width of 2mm. The upper step 15 is 4mm long and the lower step 16 is 8mm long, which can be used to open the electromagnetic lock of the high-voltage cabinet.

[0028] Continue to refer to Figure 1 and Figure 2 It can be seen that the end of the main key rod 1 away from the electromagnetic lock key head 11 is hinged to a first auxiliary key rod 2 that can be flipped up and down 180° via a hinge 5. When the first auxiliary key rod 2 is flipped 180°, the first auxiliary key rod 2 and the main key rod 1 are in a straight line, and the end of the first auxiliary key rod 2 away from the main key rod 1 is fixedly connected to a first auxiliary key head 21. The first auxiliary key head 21 is a hexagonal prism with a two-sided spacing of 8mm that mates with an M10 internal hex bolt (i.e., equivalent to an S8 specification internal hex bolt). (Wrench); At the same time, a second key bar 3 that can be folded back and forth 90° is hinged to the rear side of the end of the main key bar 1 away from the electromagnetic lock key head 11. When the second key bar 3 is folded 90°, the second key bar 3 is perpendicular to the main key bar 1, and a second key head 31 is fixedly connected to the end of the second key bar 3 away from the main key bar 1. The second key head 31 is a hexagonal prism with a two-sided spacing of 6mm that mates with an M8 internal hex bolt (i.e., equivalent to an S6 specification internal hex wrench).

[0029] refer to Figure 1 , Figure 2 and Figure 4 It is known that a third key bar 4, which can be folded 90° forward and backward, is hinged to the front side of the end of the main key bar 1 away from the electromagnetic lock key head 11. When the third key bar 4 is folded 90°, it is perpendicular to the main key bar 1, and a third key head 41 is fixedly connected to the end of the third key bar 4 away from the main key bar 1. The third key head 41 is a cylinder with a diameter of 8.7 mm, with a cylindrical space with a diameter of 5.3 mm and a depth of 10 mm. It has protrusions 42 on both sides with a length, width, and height of 3 mm, 2 mm, and 6 mm respectively, which can be used to open the corresponding high-voltage cabinet door. At the same time, in order to prevent interference between the third key head 41 and the electromagnetic lock key head 11 when the device is folded, the length of the third key bar 4 is less than the length of the main key bar 1.

[0030] In this utility model, the first key bar 2, the second key bar 3, and the third key bar 4 can be hinged to the main key bar 1 via hinges 5.

[0031] Continue to refer to Figure 1As can be seen, the upper sidewall of the main key bar 1 of this utility model is provided with a first magnet 12 for attracting the first auxiliary key bar 2, and the rear sidewall of the main key bar 1 is provided with a second magnet for attracting the second auxiliary key bar 3. At the same time, the front sidewall of the main key bar 1 is provided with a third magnet 13 for attracting the third auxiliary key bar 4. In order to facilitate the installation of the first magnet 12, the second magnet and the third magnet 13 on the main key bar 1, mounting grooves are provided on the main key bar 1 at the positions corresponding to the installation of the first magnet 12, the second magnet and the third magnet 13. The inner wall of the mounting groove is covered with a magnetic shielding layer 14 made of soft magnetic shielding material (such as flexible alloy, ferromagnetic sheet with flexible substrate or flexible ferrite material). The thickness of the magnetic shielding layer 14 is greater than the distance between the sidewall of the magnet and the inner wall of the corresponding mounting groove, so that the first magnet 12, the second magnet and the third magnet 13 are placed in the mounting groove with an interference fit.

[0032] In this invention, the attraction generated by the first magnet 12, the second magnet, and the third magnet 13 is just enough to hold the corresponding key bar, while not hindering the key bar from being pried apart and rotated from the main key bar 1 during use.

[0033] The working principle of the universal key for the high-voltage cabinet door in this embodiment is as follows: When this utility model is not in use, such as Figure 2 As shown, the first key bar 2, the second key bar 3, and the third key bar 4 are all rotated to fit against the main key bar 1, thereby minimizing the space occupied by this utility model when not in use and making it convenient to carry.

[0034] When using this utility model, the first key lever 2, the second key lever 3, and the third key lever 4 can be rotated to... Figure 1 Once you've determined the lock's state, simply select the appropriate key head based on the type of lock you need to open.

[0035] In the above embodiments, this utility model provides a universal key for high-voltage cabinet doors. By setting key heads for opening different high-voltage cabinet doors on different key bars, keys for opening multiple high-voltage cabinet doors are integrated into one. At the same time, since the first, second, and third key bars in this utility model can all be rotated to fit with the main key bar, when this utility model is not in use, the first, second, and third key bars can be rotated to fit with the main key bar, thereby minimizing the space occupied by this utility model when not in use.

[0036] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the claims.

Claims

1. A universal key for a high-voltage cabinet door, comprising an electromagnetic lock key head (11) for opening an electromagnetic lock, disposed at one end of a main key bar (1), characterized in that: The top of the main key rod (1) away from the electromagnetic lock key head (11) is hinged to a first key rod (2) which can be folded up and down and is arranged in a straight line with the main key rod (1) and has a first key head (21). The rear side of the main key rod (1) away from the electromagnetic lock key head (11) is hinged to a second key rod (3) which can be folded back and forth and is arranged perpendicular to the main key rod (1) and has a second key head (31). At the same time, the front side of the main key rod (1) away from the electromagnetic lock key head (11) is hinged to a third key rod (4) which can be folded back and forth and is arranged perpendicular to the main key rod (1) and has a third key head (41).

2. The universal key for a high-voltage cabinet door according to claim 1, characterized in that: The main key bar (1), the first secondary key bar (2), the second secondary key bar (3) and the third secondary key bar (4) are all made of a material that can be attracted by a magnet.

3. A universal key for a high-voltage cabinet door according to claim 2, characterized in that: The top of the main key bar (1) is provided with a first magnet (12) for attracting the first auxiliary key bar (2), the rear side of the main key bar (1) is provided with a second magnet for attracting the second auxiliary key bar (3), and the front side of the main key bar (1) is provided with a third magnet (13) for attracting the third auxiliary key bar (4).

4. A universal key for a high-voltage cabinet door according to claim 3, characterized in that: A magnetic shielding layer (14) is provided between the first magnet (12), the second magnet and the third magnet (13) and the main key rod (1).

5. A universal key for a high-voltage cabinet door according to claim 1, characterized in that: The first key head (21) is a hexagonal prism with a two-sided spacing of 8mm that mates with an M10 socket head cap screw; the second key head (31) is a hexagonal prism with a two-sided spacing of 6mm that mates with an M8 socket head cap screw; the third key head (41) is a cylinder with an inner hole and a diameter of 8.7mm, and both sides of the cylinder away from the third key bar (4) are provided with protrusions (42).

6. The universal key for a high-voltage cabinet door according to claim 5, characterized in that: The inner hole of the cylinder is located at the end of the cylinder away from the third key bar (4), and the diameter of the inner hole is 5.3 mm and the depth is 10 mm.

7. A universal key for a high-voltage cabinet door according to any one of claims 1-6, characterized in that: The first key bar (2), the second key bar (3) and the third key bar (4) can all rotate to fit against the main key bar (1).

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