Overvoltage protection device

Abstract

The utility model discloses an overvoltage protection device, and relates to the technical field of circuit protection, the overvoltage protection device comprises an overvoltage protection member, the overvoltage protection member is provided with a protection mechanism convenient for protection, the protection mechanism comprises four insulation protection plates and a limiting plate, the number of the insulation protection plates is four, and the limiting plate is arranged on the insulation protection plates. Each insulation protection plate is located at the two side end portions of the overvoltage protection piece, the number of the limiting plates is four, each limiting plate is located at the side end portion of the corresponding insulation protection plate, and the inner side wall of each wiring hole is connected with an electric wire. According to the utility model, through the arrangement of the insulation protection plate, after the electric lead is disconnected, the T-shaped plate is pressed to drive the limiting plate to release, and the insulation protection plate can rotate to protect the wiring hole, so that the wiring hole is prevented from being exposed, dust and fibers are prevented from entering the wiring hole to cause short circuit, meanwhile, other metal objects are prevented from being contacted, and the safety after the electric lead is disconnected is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit protection technical field, especially relates to a kind of overvoltage protection devices. BACKGROUND

[0002] Overvoltage protector is a kind of electrical safety protection device, mainly for protecting electrical equipment from being damaged by excessive voltage, and overvoltage protector is usually composed of voltage sensor, comparator, delay circuit and executing mechanism, and its main functions are as follows:

[0003] Protect electrical equipment: prevent the insulation of electrical equipment from being broken down and burned due to excessive voltage, such as motor, transformer and electronic equipment.

[0004] Avoid safety accidents: excessive voltage may cause electrical fire, explosion and other serious safety accidents, and overvoltage protector can cut off power supply in time to reduce such risks.

[0005] Improve the stability of power system: reduce the influence of voltage fluctuation on power system and ensure the stable operation of power system.

[0006] However, the existing overvoltage protection device has the following shortcomings: in the use of the existing overvoltage protection device, the wiring hole is in an exposed state when the user disconnects the electrical lead to maintain the circuit, which is easy to enter dust, fiber and other foreign matters. These foreign matters may affect the conductivity of subsequent wiring, or cause abnormal conditions such as partial discharge after power-on, and if the connector hits surrounding metal objects or other wires, it may cause line short circuit. UTILITY MODEL CONTENTS

[0007] Technical problem solved

[0008] In view of the shortcomings of the prior art, the utility model provides an overvoltage protection device, which solves the technical problem that in the use of the existing overvoltage protection device, the wiring hole is in an exposed state when the user disconnects the electrical lead to maintain the circuit, which is easy to enter dust, fiber and other foreign matters. These foreign matters may affect the conductivity of subsequent wiring, or cause abnormal conditions such as partial discharge after power-on, and if the connector hits surrounding metal objects or other wires, it may cause line short circuit.

[0009] To achieve the above purpose, the utility model is realized by the following technical scheme:

[0010] An overvoltage protection device, comprising an overvoltage protection piece, a protection mechanism is arranged on the overvoltage protection piece to facilitate protection, the protection mechanism comprises four insulating protection plates and four limiting plates, each of the insulating protection plates is arranged at the two side ends of the overvoltage protection piece, each of the limiting plates is arranged at the side end of the insulating protection plate, four sets of setscrews are arranged at the side ends of the overvoltage protection piece, two wire holes are arranged at the two side ends of the overvoltage protection piece, and an electric wire is connected to the inner side wall of each of the wire holes; first avoiding grooves are arranged at the upper and lower ends of the overvoltage protection piece, second avoiding grooves are arranged at the left and right ends of the overvoltage protection piece, a fixing rod is fixedly installed at the inner side wall of each of the first avoiding grooves, a cylindrical groove is arranged at the side end of each of the insulating protection plates, each of the insulating protection plates is rotatably installed at the circumferential end of the fixing rod through the cylindrical groove, and a torsion spring is fixedly installed between each of the cylindrical grooves and the fixing rod.

[0011] Preferably, an installation groove is arranged at the end of the inner side wall of each of the second avoiding grooves, and a side sliding groove is arranged at the side end of each of the installation grooves.

[0012] Preferably, each of the limiting plates is slidably installed at the inner side wall of each of the installation grooves, a spring is fixedly installed between each of the limiting plates and the installation grooves, a T-shaped plate is fixedly installed at the side end of each of the limiting plates, and each of the T-shaped plates is slidably installed at the inner side wall of the side sliding groove.

[0013] Compared with the prior art, the overvoltage protection device has the following beneficial effects

[0014] First, the insulating protection plates are arranged, and after the electric wire is disconnected, the limiting plates are released by pressing the T-shaped plates, the insulating protection plates can be rotated to protect the wire holes, the wire holes are prevented from being exposed and entering dust fibers to cause short circuit, contact with other metal objects is avoided, and the safety after the electric wire is disconnected is ensured.

[0015] Second, the insulating protection plates are arranged in the second avoiding grooves, when not in use, no extra space is occupied, the normal installation and use of the overvoltage protection piece are not affected, and the device is convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, and the content of the specification can be implemented, the following is a preferred embodiment of the utility model and the detailed description of the drawings.

[0017] Figure 1 It is a structure diagram of the overvoltage protection device of the utility model;

[0018] Figure 2 It is a side structure schematic view of the overvoltage protector of the utility model;

[0019] Figure 3 It is a structure view of the insulation protection plate of the utility model;

[0020] Figure 4 It is an explosion schematic view of the structure of the insulation protection plate of the utility model;

[0021] Figure 5 It is the A place structure enlarged schematic view of the utility model Figure 4 .

[0022] Legend: 1, overvoltage protection piece;11, set screw;12, wiring hole;13, electric wire;14, first avoiding groove;15, second avoiding groove;2, insulation protection plate;21, cylindrical groove;22, fixed rod;23, torsion spring;3, limit plate;31, T-shaped plate;32, spring;33, installation groove;34, side sliding groove. DETAILED DESCRIPTION

[0023] The embodiment of the application provides an overvoltage protection device, which effectively solves the technical problems that in the use of the existing overvoltage protection piece 1, when a user disconnects the electric wire 13 to maintain the circuit, the wiring hole 12 is in an exposed state, foreign matters such as dust and fibers are easy to enter, these foreign matters may affect the conductivity of subsequent wiring, or cause abnormal conditions such as partial discharge after power-on, and if the joint contacts surrounding metal objects or other electric wires, line short circuit may be caused, the device is provided with an insulation protection plate 2, after the electric wire 13 is disconnected, the limit plate 3 is released by pressing the T-shaped plate 31, the insulation protection plate 2 can rotate to protect the wiring hole 12, avoid being exposed to the outside, possible entry of dust and fibers to cause short circuit, and meanwhile, contact with other metal objects is avoided, the safety after the electric wire 13 is disconnected is ensured.

[0024] EMBODIMENT

[0025] As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The technical solution in this application embodiment effectively solves the technical problem that when a user disconnects the power wire 13 to repair the circuit in the existing overvoltage protection device 1, its wiring hole 12 is exposed, making it easy for dust, fibers, and other foreign objects to enter. These foreign objects may affect the conductivity of subsequent wiring or cause abnormal situations such as partial discharge after power is applied. Furthermore, if the connector touches surrounding metal objects or other wires, it may cause a short circuit. The overall idea is as follows: An overvoltage protection device includes an overvoltage protection device 1, which is provided with a protective mechanism for easy protection. The protective mechanism includes an insulating protective plate 2 and a limiting plate 3. There are four insulating protective plates 2, each located at both ends of the overvoltage protection component 1. There are four limiting plates 3, each located at the side end of the insulating protective plate 2. The side end of the overvoltage protection component 1 is provided with four set screws 11. Both ends of the overvoltage protection component 1 are provided with two wiring holes 12. The inner side wall of each wiring hole 12 is connected to an electrical wire 13. The overvoltage protection component 1 is an electrical safety protection device. In the use of the overvoltage protection component 1, it will be connected to the electrical wire 13. When connecting the electrical wire 13, it is generally connected in parallel between the live wire and the neutral wire to protect the single-phase electrical equipment connected to the line.

[0026] After the overvoltage protection device 1 activates its protective action for the circuit due to high voltage or other reasons, if the circuit needs to be repaired, the wire 13 and the overvoltage protection device 1 need to be disconnected to ensure that the circuit is in a safe, de-energized state during repair. After the wire 13 is disconnected, the wiring hole 12 on the overvoltage protection device 1 is exposed.

[0027] The overvoltage protection component 1 has first clearance grooves 14 at both its upper and lower ends, and second clearance grooves 15 at both its left and right ends. A fixing rod 22 is fixedly installed on the inner wall of each first clearance groove 14. A cylindrical groove 21 is formed through the side end of each insulating protective plate 2. Each insulating protective plate 2 is rotatably mounted on the circumferential end of the fixing rod 22 via the cylindrical groove 21. A torsion spring 23 is fixedly installed between each cylindrical groove 21 and the fixing rod 22, and the torsion spring 23 is no longer subjected to [unspecified force]. The resistance rebounds, and the torsion spring 23 rebounds, which drives the insulating protective plate 2 to rotate through the cylindrical groove 21. The rotating insulating protective plate 2 will move away from the inner wall of the second clearance groove 15 and gradually enter the inner wall of the first clearance groove 14. When the insulating protective plate 2 rotates and is parallel to and in contact with the first clearance groove 14, the insulating protective plate 2 can cover and protect the wiring hole 12. The user can use the same method to press the T-shaped plate 31 to drive the limiting plate 3 to slide, so that the insulating protective plate 2 rotates to cover and protect each wiring hole 12.

[0028] The end of the inner side wall of each second avoiding slot 15 is provided with a mounting slot 33, the side end of each mounting slot 33 is provided with a side sliding slot 34, each limiting plate 3 is slidingly installed on the inner side wall of each mounting slot 33, the spring 32 is fixedly installed between each limiting plate 3 and the mounting slot 33, the side end of each limiting plate 3 is fixedly installed with a T-shaped plate 31, each T-shaped plate 31 is slidingly installed on the inner side wall of the side sliding slot 34, the user can press the T-shaped plate 31 downward, the T-shaped plate 31 moves downward to drive the limiting plate 3 to slide downward in the mounting slot 33, the limiting plate 3 slides downward to compress the spring 32, after the limiting plate 3 completely slides into the inner side wall of the mounting slot 33, the limiting plate 3 no longer blocks the insulating protective plate 2.

[0029] In view of the problems in the prior art, the utility model provides a kind of overvoltage protection device, and the insulating protective plate 2 is arranged in the device, which is released by pressing T-shaped plate 31 to drive limiting plate 3 after the electrical conductor 13 is disconnected, the insulating protective plate 2 can be rotated to protect the terminal hole 12, to avoid being exposed to the outside, and to prevent short circuit caused by dust and fibers, while avoiding contact with other metal objects, to ensure safety after the electrical conductor 13 is disconnected.

[0030] Overvoltage protection piece 1: it is an electrical safety protection device, used in parallel between live wire and zero line, to protect single-phase electrical equipment connected to the line, and to protect the circuit when overvoltage occurs.

[0031] Tightening screw 11: used to fix overvoltage electrical conductor 13.

[0032] Terminal hole 12: used to connect electrical conductor 13, to connect overvoltage protection piece 1 to the circuit.

[0033] Electrical conductor 13: connecting overvoltage protection piece 1 and the circuit.

[0034] First avoiding slot 14: opened in the upper and lower ends of overvoltage protection piece 1, used to accommodate insulating protective plate 2, when the insulating protective plate 2 is rotated to be parallel to the first avoiding slot 14 and in contact, it can cover and protect the terminal hole 12.

[0035] Second avoiding slot 15: opened in the left and right ends of overvoltage protection piece 1, used to place insulating protective plate 2, to avoid occupying extra space when in normal use.

[0036] Insulating protective plate 2: four in number, located at the two side ends of overvoltage protection piece 1, can cover and protect the terminal hole 12, to prevent dust and fibers from entering, and to prevent short circuit caused by contact with other metal objects.

[0037] Cylindrical slot 21: Opened in the side end of the insulating guard plate 2, through which the insulating guard plate 2 is rotatably installed on the circumferential end of the fixed rod 22, so that the insulating guard plate 2 can rotate around the fixed rod 22.

[0038] Fixed rod 22: Fixed on the inner side wall of the first avoiding slot 14, providing a rotating support shaft for the insulating guard plate 2, so that the insulating guard plate 2 can rotate for protection.

[0039] Torsion spring 23: Installed between the cylindrical slot 21 and the fixed rod 22, rebounding when not blocked by the limiting plate 3, driving the insulating guard plate 2 to rotate through the cylindrical slot 21, and realizing protection for the wiring hole 12.

[0040] Limiting plate 3: Four in number, located at the side end of the insulating guard plate 2, and slidingly installed in the installation slot 33.

[0041] T-shaped plate 31: Fixed on the side end of the limiting plate 3, penetrating and slidingly installed in the inner side wall of the side sliding slot 34, used to facilitate the user to press downward, driving the limiting plate 3 to slide in the installation slot 33.

[0042] Spring 32: Connecting the limiting plate 3 and the installation slot 33, compressed when the limiting plate 3 is pressed and slid, providing a restoring force for the limiting plate 3.

[0043] Installation slot 33: Opened in the end of the inner side wall of the second avoiding slot 15, used to install the limiting plate 3, so that the limiting plate 3 can slide therein.

[0044] Side sliding slot 34: Opened in the side end of the installation slot 33, used to penetrate and install the T-shaped plate 31, so that the T-shaped plate 31 can slide therein.

[0045] Working principle:

[0046] The overvoltage protection device 1 is an electrical safety protection device, which is connected with the electric wire 13 in use, and is generally connected in parallel between the live wire and the neutral wire when the electric wire 13 is connected, for protecting the single-phase electrical equipment connected to the line, after the overvoltage protection device 1 acts to protect the circuit due to high voltage or the like, if the circuit needs to be repaired, the electric wire 13 and the overvoltage protection device 1 need to be disconnected to ensure that the circuit is in a safe non-electric state during the repair, after the electric wire 13 is disconnected, the wiring hole 12 on the overvoltage protection device 1 is in an exposed state, at this time, the user can press the T-shaped plate 31 downward, the T-shaped plate 31 moves downward to drive the limiting plate 3 to slide downward in the installation groove 33, the limiting plate 3 slides downward to compress the spring 32, after the limiting plate 3 slides completely into the inner side wall of the installation groove 33, the limiting plate 3 no longer blocks the insulating protective plate 2, that is, the torsional spring 23 no longer resists the rebound, the rebound of the torsional spring 23 drives the insulating protective plate 2 to rotate through the cylindrical groove 21, the rotation of the insulating protective plate 2 leaves the inner side wall of the second avoiding groove 15 and gradually enters the inner side wall of the first avoiding groove 14, when the insulating protective plate 2 rotates and is parallel to and contacts the first avoiding groove 14, the insulating protective plate 2 can cover and protect the wiring hole 12, the user can press the T-shaped plate 31 to drive the limiting plate 3 to slide and rotate the insulating protective plate 2 to cover and protect each wiring hole 12, when the user repairs the circuit by disconnecting the electric wire 13, the insulating protective plate 2 can protect each wiring hole 12, in the use of the existing overvoltage protection device 1, when the user repairs the circuit by disconnecting the electric wire 13, the wiring hole 12 is in an exposed state, which is easy to enter dust, fibers and other foreign matters, these foreign matters may affect the conductivity of the subsequent wiring, or cause abnormal conditions such as partial discharge after power-on, and if the joint contacts the surrounding metal objects or other wires, it may cause a short circuit, the device is provided with the insulating protective plate 2, after the electric wire 13 is disconnected, the limiting plate 3 is released by pressing the T-shaped plate 31, the insulating protective plate 2 can rotate to protect the wiring hole 12, avoid being exposed to the outside, and prevent short circuit caused by entering dust and fibers, and ensure safety after the electric wire 13 is disconnected, and the device sets the insulating protective plate 2 in the second avoiding groove 15, without occupying additional space when not in use, without affecting the normal installation and use of the overvoltage protection device 1, and is convenient to use.

[0047] Finally, it should be noted that: obviously, the above embodiments are only examples for clearly illustrating the present application, and are not limitations on the embodiments. For ordinary skilled persons in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. An overvoltage protection device comprising an overvoltage protection element (1), characterized in that, The overvoltage protection component (1) is equipped with a protective mechanism for easy protection; The protective mechanism includes an insulating protective plate (2) and a limiting plate (3). There are four insulating protective plates (2), each of which is located at both ends of the overvoltage protection component (1). There are four limiting plates (3), each of which is located at the side end of the insulating protective plate (2).

2. An overvoltage protection device as claimed in claim 1, characterized in that: The overvoltage protection component (1) has four set screws (11) on its side end, and two wiring holes (12) are provided on both sides of the overvoltage protection component (1).

3. An overvoltage protection device as claimed in claim 2, characterized in that: Each of the wiring holes (12) has an electrical wire (13) connected to its inner sidewall. The overvoltage protection component (1) has a first clearance groove (14) at both the upper and lower ends, and a second clearance groove (15) at both the left and right ends.

4. An overvoltage protection device as claimed in claim 3, characterized in that: Each of the first clearance grooves (14) has a fixed rod (22) fixedly installed on its inner side wall. Each of the insulating protective plates (2) has a columnar groove (21) through which it is opened at its side end. Each of the insulating protective plates (2) is rotatably installed on the circumferential end of the fixed rod (22) through the columnar groove (21). A torsion spring (23) is fixedly installed between each of the cylindrical grooves (21) and the fixing rod (22).

5. An overvoltage protection device as claimed in claim 4, characterized in that: Each of the second clearance grooves (15) has a mounting groove (33) extending through the end of its inner sidewall, and each of the mounting grooves (33) has a side sliding groove (34) extending through its side end.

6. An overvoltage protection device as claimed in claim 5, characterized in that: Each of the limiting plates (3) is slidably installed on the inner side wall of each mounting groove (33), and a spring (32) is fixedly installed between each of the limiting plates (3) and the mounting groove (33); Each of the limiting plates (3) is fixedly installed with a T-shaped plate (31) at its side end, and each T-shaped plate (31) is slidably installed through the inner side wall of the side slide groove (34).

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