Miniaturized surge protection device

Abstract

The utility model relates to the technical field of electrical protection devices, in particular to a miniaturized surge protection device. The module comprises a concave base, a module head is arranged in a notch of the concave base, a protector module is arranged in the module head, a PE electrode end and an N electrode end are arranged on one vertical edge of the concave base, and an L electrode end is arranged on the other vertical edge of the concave base. The protector module comprises a pressure-sensitive protection unit and a gas discharge tube protection unit, the pressure-sensitive protection unit is connected with the L-pole electrode end and the N-pole electrode end, and the gas discharge tube protection unit is connected with the PE-pole electrode end and the N-pole electrode end. According to the invention, the width of the 2P surge protection device with the nominal discharge current equal to 20kA is reduced to 18mm, the installation space of the product is effectively reduced, and the product cost is effectively reduced by reducing the volume.

Description

Technical Field

[0001] This utility model relates to the field of electrical protection device technology, and in particular to a miniaturized surge protector. Background Technology

[0002] A surge protector is an electronic device that provides safety protection for various electronic devices, instruments, and communication lines. When a surge current or voltage spike suddenly occurs in an electrical circuit or communication line due to external interference, the surge protector can conduct and divert the current in a very short time, thereby preventing damage to other equipment in the circuit. Currently, the nominal discharge current of a surge protector is typically 20kA, and its 2P structure is usually 36mm wide. The conventional 36mm width occupies considerable installation space and has high production costs. In this invention, In refers to the nominal discharge current of the surge protector. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model solves the issues of large installation space and high production costs associated with surge protectors by providing a miniaturized surge protector.

[0004] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: a miniaturized surge protector, including a concave base, a module head provided in the concave opening of the concave base, a protector module provided in the module head, a PE electrode and a N electrode provided on one vertical side of the concave base, and an L electrode provided on the other vertical side of the concave base. The protector module includes a varistor protection unit and a gas discharge tube protection unit. The varistor protection unit is connected to the L electrode and the N electrode, and the gas discharge tube protection unit is connected to the PE electrode and the N electrode.

[0005] Further: In the above-mentioned miniaturized surge protector, the width of the protector module is 18mm.

[0006] The pressure-sensitive protection unit includes a pressure-sensitive resistor, a rotating block L, and a release spring L connected in sequence. A torsion spring L is provided at the bottom end of the rotating block L.

[0007] The gas discharge tube protection unit includes a gas discharge tube, a rotating block R, and a release spring R connected in sequence. A torsion spring R is provided at the bottom end of the rotating block R.

[0008] The pressure-sensitive protection unit has symmetrical electrode pins L connected to its bottom end, and a symmetrical socket L matching the electrode pins L is provided at the bottom end of the concave base. The gas discharge tube protection unit has symmetrical electrode pins R connected to its bottom end, and a symmetrical socket R matching the electrode pins R is provided at the bottom end of the concave base.

[0009] The PE electrode is connected to a PE end screw, the N electrode is connected to an N end screw, and the L electrode is connected to an L end screw.

[0010] Furthermore, in the aforementioned miniaturized surge protector, the module head includes a housing to accommodate the protector module. The lower end of the housing has a protruding anti-detachment hook, and the base has a locking hole that mates with the anti-detachment hook. This anti-detachment hook solves the problem of preventing the protector module from falling off after miniaturization.

[0011] Compared with existing technologies, the aforementioned miniaturized surge protector includes a concave base with a module head inside the recess. The module head houses a protector module. A PE (protective earth) electrode and a N (neutral earth) electrode are located on one vertical side of the concave base, and an L (lower earth) electrode is located on the other vertical side. The protector module includes a varistor protection unit and a gas discharge tube protection unit. The varistor protection unit is connected to the L and N electrodes, and the gas discharge tube protection unit is connected to the PE and N electrodes. This invention reduces the width of a 2P surge protector with In equal to 20kA to 18mm, effectively reducing the installation space and lowering the product cost through size reduction. Therefore, the beneficial technical effects of this invention are:

[0012] 1. Streamline the structure, reduce the number of product parts, and narrow the product width to reduce product volume. Optimize the structure to reduce labor and material costs, while ensuring the safety and performance of the surge protector remain unchanged.

[0013] 2. Achieving an anti-detachment structure for miniaturized modules using limited space. Attached Figure Description

[0014] Figure 1 This is a simplified structural diagram of the miniaturized surge protector of this utility model;

[0015] Figure 2 This is an exploded view of the structure of the miniaturized surge module head of this utility model;

[0016] Figure 3 This is a simplified structural diagram of the base of the miniaturized surge protector of this utility model;

[0017] The components are as follows: 1. Base, 2. Module head, 3. Varistor, 4. Rotating block L, 5. Release spring L, 6. Torsion spring L, 7. Gas discharge tube, 8. Rotating block R, 9. Release spring R, 10. Torsion spring R, 11. Electrode pin L, 12. Socket L, 13. Electrode pin R, 14. Socket R, 15. PE end screw, 16. N end screw, 17. L end screw, 18. Box body, 19. Anti-detachment hook, 20. Locking hole. Detailed Implementation

[0018] To facilitate understanding by those skilled in the art, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0019] like Figure 1-3 1. A miniaturized surge protector includes a concave base 1, a module head 2 within the concave base, a protector module within the module head 2, a PE electrode and a N electrode on one vertical side of the concave base, and an L electrode on the other vertical side of the concave base. The protector module includes a varistor protection unit and a gas discharge tube protection unit. The varistor protection unit is connected to the L electrode and the N electrode, and the gas discharge tube protection unit is connected to the PE electrode and the N electrode. The width of the protector module is 18 mm. The varistor protection unit includes a varistor 3, a rotating block L4, and a release spring L5 connected in sequence. A torsion spring L6 is located at the bottom of the rotating block L4. The gas discharge tube protection unit includes a gas discharge tube 7, a rotating block R8, and a release spring R9 connected in sequence. A torsion spring R10 is located at the bottom of the rotating block R8.

[0020] The pressure-sensitive protection unit has symmetrical electrode pins L 11 connected to its bottom end, and a symmetrical socket L 12 matching the electrode pins L is provided at the bottom end of the concave base. The gas discharge tube protection unit has symmetrical electrode pins R 13 connected to its bottom end, and a symmetrical socket R 14 matching the electrode pins R is provided at the bottom end of the concave base. The PE electrode is connected to a PE end screw 15, the N electrode is connected to an N end screw 16, and the L electrode is connected to an L end screw 17. The module head 2 has a housing 18 for accommodating the protector module, and the lower end of the housing 18 has a protruding anti-detachment hook 19. The base has a locking hole 20 that mates with the anti-detachment hook.

[0021] During operation, the miniaturized surge protector of this embodiment has three high-current discharge paths: 1. LN, where the current is discharged through the varistor protection unit; 2. N-PE, where the current is discharged through the gas discharge tube protection unit; 3. L-PE, where both the varistor protection unit and the gas discharge tube unit discharge current simultaneously. The varistor protection unit in LN protection mode and the gas discharge tube protection unit in N-PE protection mode are integrated into the same 18mm wide module head to reduce size. Traditionally, the varistor protection unit and the gas discharge tube protection unit are each a separate 18mm module head. By designing a double-beveled anti-detachment hook 19 at the lower end 18 of the housing, which cooperates with the locking holes on the base 1, the module head can be effectively prevented from falling off when the surge protector is subjected to vibration and impact conditions. However, during normal installation and removal, due to the elasticity of the plastic hook and the double-beveled design, the module head can be normally installed and removed after applying a certain insertion and removal force.

[0022] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is not necessary to exhaustively list all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A miniaturized surge protector comprising a concave base (1) having a module head (2) in the concave recess of the base, said module head (2) having a protector module therein, characterized in that: The concave base has a PE electrode and an N electrode on one vertical side and an L electrode on the other vertical side. The protector module includes a varistor protection unit and a gas discharge tube protection unit. The varistor protection unit is connected to the L electrode and the N electrode, and the gas discharge tube protection unit is connected to the PE electrode and the N electrode.

2. The compact surge protector of claim 1, wherein: The width of the protector module is 18mm.

3. The compact surge protector of claim 2, wherein: The pressure-sensitive protection unit includes a pressure-sensitive resistor (3), a rotating block L (4), and a release spring L (5) connected in sequence.

4. The compact surge protector of claim 3, wherein: The bottom end of the rotating block L (4) is provided with a torsion spring L (6).

5. The miniaturized surge protector according to claim 1, characterized in that: The gas discharge tube protection unit includes a gas discharge tube (7), a rotating block R (8), and a release spring R (9) connected in sequence.

6. The compact surge protector of claim 5, wherein: The bottom end of the rotating block R (8) is provided with a torsion spring R (10).

7. The compact surge protector of claim 4, wherein: The pressure-sensitive protection unit is connected to a symmetrical electrode pin L (11) at the bottom end, and a symmetrical socket L (12) matching the pin L is provided at the bottom end of the concave base.

8. The compact surge protector of claim 6, wherein: The gas discharge tube protection unit is connected to a symmetrical electrode pin R (13) at the bottom end, and a symmetrical socket R (14) matching the pin R is provided at the bottom end of the concave base.

9. The compact surge protector of claim 1, wherein: The PE electrode is connected to a PE end screw (15), the N electrode is connected to an N end screw (16), and the L electrode is connected to an L end screw (17).

10. The compact surge protector of any of claims 1-9, wherein: The module head (2) is provided with a box (18) for accommodating the protector module. The lower end of the box (18) is provided with a protruding anti-detachment hook (19). The base is provided with a card hole (20) that cooperates with the anti-detachment hook.

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