Electric construction safety leakage protection switch

Abstract

The utility model relates to the technical field of earth leakage protection, and discloses an electrical construction safety earth leakage protection switch, which comprises a switch body, a line fixing frame is fixedly mounted at the top of the switch body, a limiting cylinder is fixedly mounted on one side of the line fixing frame, a telescopic spring is fixedly mounted in the limiting cylinder, and a limiting groove is formed in the limiting cylinder. And a pushing ring is fixedly mounted at one end of the telescopic spring. According to the electric construction safety leakage protection switch, through arrangement of a limiting cylinder, a telescopic spring, a pushing ring and a threaded rod, a pushing plate and a circuit fixing plate are driven to move through rotation of the threaded rod, and a circuit is firmly installed in a circuit fixing frame; and the pushing ring is matched with the extensibility generated by the telescopic spring to exert certain outward pushing force on the threaded rod, so that the circuit can be effectively prevented from being separated from the interior of the circuit fixing frame at the first time when the threaded rod is loosened, and a worker can conveniently fix the circuit again.

Description

Technical Field

[0001] This utility model relates to the field of leakage current protection technology, and in particular to leakage current protection switches for electrical construction safety. Background Technology

[0002] Early electrical safety relied mainly on fuses and overcurrent relays. However, these devices were slow to react to leakage faults and could not detect the tiny leakage current generated when a person came into contact with a live part, thus posing safety hazards. With the development of power systems and the popularization of electrical equipment, electric shock accidents occurred frequently, prompting people to start researching more sensitive and reliable protection devices. In the 1930s, the first generation of leakage protection devices was introduced, but they were complex in structure, expensive, and had limited application. It was not until the 1950s that the emergence of transistor technology created conditions for the miniaturization and popularization of leakage protection switches. Subsequently, various types of leakage protection switches were introduced, such as voltage type and current type, among which the current type was widely used due to its high sensitivity and reliable operation.

[0003] However, existing electrical construction safety leakage protection switches have the following disadvantages:

[0004] (1) At present, when installing the wiring, the device usually uses threaded bolts to fix the wiring inside the switch. However, after long-term use, the threaded bolts will rust and age, resulting in loosening and falling off, which will affect the connection between the wiring and the switch.

[0005] (2) At present, in order to better protect the leakage current switch, a protective cover is usually installed on the outer surface of the leakage current switch. Since the protective cover is exposed to the outside for a long time, it is easy to be damaged and needs to be replaced regularly. However, since the protective cover is usually an integrated structure, it is difficult to disassemble, thus reducing work efficiency. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] The technical problem solved by the utility model is to provide an electrical construction safety leakage protection switch that is highly practical, easy to operate, and has a simple structure, thus solving the problems mentioned in the background art, such as the easy falling off of threaded bolts after rusting and aging, and the difficulty in disassembling the protective cover.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: an electrical construction safety leakage protection switch, comprising a switch body, a circuit fixing frame fixedly installed on the top of the switch body, a limit cylinder fixedly installed on one side of the circuit fixing frame, a telescopic spring fixedly installed inside the limit cylinder, a push ring fixedly installed at one end of the telescopic spring, a threaded rod installed on one side of the push ring, the threaded rod, the telescopic spring, and the push ring all located inside the limit cylinder, the outer surface of the threaded rod being threadedly connected to the inside of the circuit fixing frame, a protective cover installed above the switch body, and a limit ring fixedly installed on one side of the protective cover.

[0010] Optionally, a movable spring is installed inside the limiting ring. One end of the movable spring is fixedly connected to the side of the protective cover, and a snap-fit ​​post is fixedly installed at the other end of the movable spring. The outer surface of the snap-fit ​​post is in contact with the inner wall of the limiting ring.

[0011] Optionally, a pushing block is fixedly installed on the outer surface of the snap-fit ​​post, one end of the pushing block penetrating the interior of the limiting ring and contacting its outer surface.

[0012] Optionally, a mounting plate is fixedly installed on one side of the switch body, and a fixing block is fixedly installed on the outer surface of the mounting plate. One end of the snap-fit ​​post is located inside the fixing block and is rotatably connected to it.

[0013] Optionally, a push plate is installed on one side of the threaded rod, the outer surface of the push plate is movably connected to the inner wall of the line fixing frame, and a line fixing plate is fixedly installed on one side of the push plate.

[0014] Optionally, one side of the circuit fixing plate has a concave-convex shape, and the circuit fixing plate is located inside the protective cover.

[0015] (III) Beneficial Effects

[0016] This utility model provides an electrical construction safety leakage protection switch, which has the following beneficial effects:

[0017] 1. This electrical construction safety leakage protection switch, through the setting of limit cylinder, telescopic spring, push ring and threaded rod, uses the rotation of threaded rod to drive the push plate and the line fixing plate to move, and firmly install the line inside the line fixing frame. At the same time, the extension of the push ring and the telescopic spring itself exerts a certain outward pushing force on the threaded rod, thereby effectively preventing the line from detaching from the line fixing frame immediately when the threaded rod becomes loose, making it convenient for workers to re-fix the line.

[0018] 2. This electrical construction safety leakage protection switch, through the setting of a snap-fit ​​post, a movable spring, a limit ring, a push block, and a fixing block, pushes the push block towards the protective cover, causing the snap-fit ​​post to gradually detach from the inside of the fixing block with the cooperation of the push block, thereby releasing the positional relationship between the protective cover and the mounting plate, thus facilitating the quick replacement of damaged protective covers by workers and improving work efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 for Figure 1 A magnified schematic diagram of the structure of part A in the diagram;

[0021] Figure 3 This is a schematic diagram of the switch body structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the limiting ring of this utility model;

[0023] Figure 5 This is a schematic diagram of the circuit fixing plate structure of this utility model;

[0024] Figure 6 This is a schematic diagram of the limiting cylinder structure of this utility model.

[0025] In the diagram: 1. Switch body; 2. Circuit fixing frame; 3. Limiting cylinder; 4. Telescopic spring; 5. Push ring; 6. Threaded rod; 7. Protective cover; 8. Limiting ring; 9. Movable spring; 10. Snap-fit ​​post; 11. Push block; 12. Mounting plate; 13. Fixing block; 14. Push plate; 15. Circuit fixing plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] Please see Figures 1 to 6This utility model provides a technical solution: an electrical construction safety leakage protection switch, including a switch body 1, a line fixing frame 2 fixedly installed on the top of the switch body 1, a limit cylinder 3 fixedly installed on one side of the line fixing frame 2, a telescopic spring 4 fixedly installed inside the limit cylinder 3, the telescopic spring 4 prevents the threaded rod 6 from falling off the line fixing frame 2 immediately when it becomes loose due to rust and aging, a push ring 5 is fixedly installed on one end of the telescopic spring 4, a threaded rod 6 is installed on one side of the push ring 5, the threaded rod 6, the telescopic spring 4 and the push ring 5 are all located inside the limit cylinder 3, the outer surface of the threaded rod 6 is threadedly connected to the inside of the line fixing frame 2, a protective cover 7 is installed on the top of the switch body 1, the protective cover 7 can play a certain protective effect on the switch body 1, a limit ring 8 is fixedly installed on one side of the protective cover 7;

[0028] A movable spring 9 is installed inside the limiting ring 8. One end of the movable spring 9 is fixedly connected to the side of the protective cover 7, and the other end of the movable spring 9 is fixedly installed with a locking post 10. The outer surface of the locking post 10 is in contact with the inner wall of the limiting ring 8. Through the setting of the movable spring 9, the position of the locking post 10 after movement can be pushed back into the interior of the fixed block 13.

[0029] A push block 11 is fixedly installed on the outer surface of the snap-fit ​​post 10. One end of the push block 11 passes through the inside of the limiting ring 8 and contacts its outer surface. The push block 11 makes it convenient for the staff to push the snap-fit ​​post 10 to the correct position.

[0030] A mounting plate 12 is fixedly installed on one side of the switch body 1. A fixing block 13 is fixedly installed on the outer surface of the mounting plate 12. One end of the snap-fit ​​post 10 is located inside the fixing block 13 and is rotatably connected to it. The position of the snap-fit ​​post 10 and the protective cover 7 can be restricted by the setting of the fixing block 13.

[0031] A push plate 14 is installed on one side of the threaded rod 6. The outer surface of the push plate 14 is movably connected to the inner wall of the line fixing frame 2. A line fixing plate 15 is fixedly installed on one side of the push plate 14. With the push plate 14, when the threaded rod 6 rotates, the push plate 14 can drive the line fixing plate 15 to move.

[0032] One side of the line fixing plate 15 has a concave-convex shape. The line fixing plate 15 is located inside the protective cover 7. By setting the line fixing plate 15, the line can be firmly installed inside the line fixing frame 2.

[0033] In this invention, the working steps of the device are as follows:

[0034] First step: First, the staff will pass the wire through the inside of the wire fixing frame 2, and then use a designated tool to drive the threaded rod 6 to rotate. As the threaded rod 6 rotates continuously, the push plate 14 will drive the wire fixing plate 15 to move in the direction of the wire and make contact with it under the cooperation of the threaded rod 6. Using the moving force generated by the rotation of the threaded rod 6, the wire is firmly installed inside the wire fixing frame 2.

[0035] Second step: Finally, when the protective cover 7 is damaged and needs to be replaced, push the push block 11 towards the protective cover 7, so that one end of the locking post 10 gradually separates from the inside of the fixing block 13 under the action of the push block 11, thereby releasing the positional relationship between the protective cover 7 and the mounting plate 12. At the same time, during the installation process, the inertia of the movable spring 9 is used to push the locking post 10 back into the inside of the fixing block 13. At this point, the overall operation process is completed.

[0036] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0037] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electrical construction safety leakage protection switch, comprising a switch body (1), characterized in that: A circuit fixing frame (2) is fixedly installed on the top of the switch body (1). A limiting cylinder (3) is fixedly installed on one side of the circuit fixing frame (2). A telescopic spring (4) is fixedly installed inside the limiting cylinder (3). A push ring (5) is fixedly installed at one end of the telescopic spring (4). A threaded rod (6) is installed on one side of the push ring (5). The threaded rod (6), the telescopic spring (4), and the push ring (5) are all located inside the limiting cylinder (3). The outer surface of the threaded rod (6) is threaded to the inside of the circuit fixing frame (2). A protective cover (7) is installed above the switch body (1). A limiting ring (8) is fixedly installed on one side of the protective cover (7).

2. The electrical construction safety leakage protection switch according to claim 1, characterized in that: The limiting ring (8) is equipped with a movable spring (9). One end of the movable spring (9) is fixedly connected to the side of the protective cover (7). The other end of the movable spring (9) is fixedly equipped with a snap-fit ​​post (10). The outer surface of the snap-fit ​​post (10) is in contact with the inner wall of the limiting ring (8).

3. The electrical construction safety leakage protection switch according to claim 2, characterized in that: A push block (11) is fixedly installed on the outer surface of the snap-fit ​​post (10). One end of the push block (11) penetrates the interior of the limiting ring (8) and is in contact with its outer surface.

4. The electrical construction safety leakage protection switch according to claim 2, characterized in that: A mounting plate (12) is fixedly installed on one side of the switch body (1), and a fixing block (13) is fixedly installed on the outer surface of the mounting plate (12). One end of the snap-fit ​​post (10) is located inside the fixing block (13) and is rotatably connected to it.

5. The electrical construction safety leakage protection switch according to claim 1, characterized in that: A push plate (14) is installed on one side of the threaded rod (6), and the outer surface of the push plate (14) is movably connected to the inner wall of the line fixing frame (2). A line fixing plate (15) is fixedly installed on one side of the push plate (14).

6. The electrical construction safety leakage protection switch according to claim 5, characterized in that: The circuit fixing plate (15) has a concave-convex shape on one side, and the circuit fixing plate (15) is located inside the protective cover (7).

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