CN218040793U - Composite surge protector with parallel discharge gap and piezoresistor - Google Patents

Abstract

The utility model discloses a parallelly connected compound surge protector of discharge gap and piezo-resistor, include: a surge protector body, the surge protector body includes: the module comprises an outer module box, an inner module box, a spring, a tripping pole piece, a piezoresistor, a gap integrated piece, a high-temperature pole piece, an electrode inserting piece, a swing rod and an electrode tripping inserting piece. The beneficial effects of the utility model reside in that: the discharge gap fixing piece is specially designed to be provided with the associated electrode plate instead of a special discharge tube, so that the discharge gap fixing piece has the characteristics of large flow, low residual pressure, high response speed, high reliability and convenience for processing; the discharge gap and the piezoresistor which are arranged in parallel can obtain larger flux compared with the series arrangement mode, and can be adapted to the scene of larger current.

Description

Composite surge protector with parallel discharge gap and piezoresistor

Technical Field

The utility model relates to a surge protector technical field especially relates to a parallelly connected compound surge protector of discharge gap and piezo-resistor.

Background

A. The class-B, class-C and class-D power supply surge protectors are generally applied to equipment circuits of expensive equipment or important application occasions, single-stage protection or multi-stage protection can be adopted for protection, and the surge protectors are generally arranged at the front ends of the equipment in parallel. The working principle is as follows: at the moment of overcurrent in a working circuit or for a short time of continuous overcurrent, the power supply surge protector discharges the overcurrent in the circuit to the ground by utilizing the characteristics of the power supply surge protector, so that the normal transmission current in the circuit is ensured, and the normal operation of equipment is met. The surge protector of the prior art can have multiple implementation modes: if the zinc oxide varistor chip module is connected in parallel on the protected main circuit, the zinc oxide varistor chip parallel discharge tube is also connected in parallel on the protected main circuit; under the condition of larger through flow, the cost is relatively higher; if the mode that the piezoresistor is connected with the discharge tube in parallel is adopted, the flow rate of the discharge tube per se is determined, the relative residual voltage is low, but the problems that the discharge tube with the large flow rate generally has large volume, high cost, high processing difficulty and the like are not considered, and the economic use value is poor.

Thus, the prior art is deficient and needs improvement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of prior art, providing a compound surge protector that discharge gap and piezo-resistor are parallelly connected, have that the through flow is big, incomplete pressure low grade speciality.

The technical scheme of the utility model as follows: the utility model provides a parallelly connected compound surge protector of discharge gap and piezo-resistor, include: a surge protector body, the surge protector body includes: the module comprises an outer module box, an inner module box, a spring, a tripping pole piece, a piezoresistor, a gap integrated piece, a high-temperature pole piece, an electrode insert piece, a swing rod and an electrode tripping insert piece, wherein slots are formed on the gap integrated piece respectively corresponding to the tripping pole piece and the high-temperature pole piece, the tripping pole piece and the high-temperature pole piece are respectively arranged on the gap integrated piece through the corresponding slots, two pins of the piezoresistor are respectively welded on the high-temperature pole piece and the tripping pole piece in a soldering mode, the piezoresistor and a gap in the gap integrated piece are arranged in parallel, the gap integrated piece is arranged on the inner module box, the electrode insert piece is arranged at the bottom of the inner module box and is fixed with the high-temperature pole piece in a current welding mode, the swing rod is arranged at the position of the inner module box, the electrode insert piece is arranged on the inner module box and is soldered with the tripping pole piece in a low-temperature soldering mode, the spring is in a stretching state, two ends of the spring are respectively connected with the swing rod and the inner module box, the inner module box is sleeved in the outer module box, and a window piece is arranged on the outer module box.

Further, surge protector still includes the base, the surge protector body sets up on the base and through electrode inserted sheet and electrode dropout inserted sheet electricity with base electric connection.

Further, the base comprises a base left shell, a base right shell, a first terminal assembly and a second terminal assembly, the base left shell and the base right shell are assembled together to form a base outer shell, and the first terminal assembly and the second terminal assembly are arranged on the base outer shell.

Furthermore, be equipped with on the surge protector body and distinguish the round pin, correspond on the base distinguish the round pin and be formed with the jack.

Furthermore, the gap integrated piece is made of a flame-retardant, insulating and heat-resistant high polymer material.

Further, the size of the gap in the gap integrated piece is 0.1mm-2mm.

Further, the clearance of the clearance integration piece comprises a plurality of openings, and the total area of the openings is 0.2mm ² -36mm ² 。

Further, the open pores include round pores, square pores, and/or irregular pores.

Furthermore, the tripping pole piece and the high-temperature pole piece are both made of copper, and the thickness of the high-temperature pole piece is 0.2 mm-2mm.

Adopt above-mentioned scheme, the beneficial effects of the utility model reside in that: the discharge gap fixing piece is specially designed to be provided with the associated electrode plate instead of a special discharge tube, so that the discharge gap fixing piece has the characteristics of large flow rate, low residual voltage, high response speed, high reliability and convenience in processing, all parts in the discharge gap are directly assembled without heating and welding, the heat damage is avoided, the installation is simple and rapid, the discharge gap fixing piece is suitable for mechanized production, the cost is low, and the discharge gap fixing piece has great economic use value; compared with a series arrangement mode, the discharge gap and the piezoresistor which are arranged in parallel can obtain larger through flow and can be adapted to a scene with larger current for use.

Drawings

Fig. 1 is an exploded view of the composite surge protector of the present invention.

Fig. 2 is an explosion diagram of the tripping pole piece, the voltage dependent resistor, the gap integration piece and the high temperature pole piece of the present invention.

Fig. 3 is the structure diagram of the assembled tripping pole piece, piezoresistor, gap integrated piece and high-temperature pole piece.

Fig. 4 is a first schematic structural diagram of the surge protector body of the present invention without a module housing.

Fig. 5 is a second schematic structural view of the surge protector body of the present invention without a module housing.

Fig. 6 is the structure diagram of the composite surge protector after the assembly of the utility model is completed.

Fig. 7 is a schematic diagram of the 5P composite surge protector of the present invention.

Fig. 8 is an equivalent circuit diagram of the composite surge protector of the present invention.

Fig. 9A to 9D are equivalent circuit diagrams of the usage status of the composite surge protector according to some embodiments of the present invention.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to fig. 9D, in this embodiment, the present invention provides a composite surge protector with a discharge gap connected in parallel with a voltage dependent resistor, including: a surge protector body, the surge protector body includes: the module comprises an outer module box 1, an inner module box 3, a spring 4, a tripping pole piece 5, a piezoresistor 6, a gap integrated piece 7, a high-temperature pole piece 8, an electrode inserting piece 10, a swing rod 11 and an electrode tripping inserting piece 12, wherein slots are formed on the gap integrated piece 7 corresponding to the tripping pole piece 5 and the high-temperature pole piece 8 respectively, the tripping pole piece 5 and the high-temperature pole piece 8 are arranged on the gap integrated piece 7 through the corresponding slots respectively, two pins of the piezoresistor 6 are welded on the high-temperature pole piece 8 and the tripping pole piece 5 through a soldering mode respectively, the piezoresistor 6 can be a circular sheet or a square sheet, the piezoresistor 6 and a gap in the gap integrated piece 7 are arranged in parallel, the gap integrated piece 7 is arranged on the inner module box 3, the electrode inserting piece 10 is arranged at the bottom of the inner module box 3 and fixed with the high-temperature pole piece 8 through a current welding mode, the swing rod 11 is arranged at the inner module box 3, the electrode tripping inserting piece 12 is arranged on the inner module box 3 and is welded with the tripping pole piece 5 through a welding mode, the spring 4 is in a stretching state, two ends of the outer module box are connected with the swing rod box 3 and the inner module box 1, and a window of the inner module 2, and the module. The discharge gap and the piezoresistor 6 are connected in parallel, and the follow current interruption capability is strong, so that the non-follow current state is achieved.

Further, surge protector still includes base 13, the surge protector body sets up on base 13 and passes through electrode inserted sheet 10 and electrode dropout inserted sheet 12 electricity with base 13 electric connection, base 13 bottom is equipped with can install the mounting structure on the track, and is convenient surge protector's installation. Under different embodiments, one base of the scheme can be correspondingly provided with one surge protector body, and one base can also correspond to two or more surge protector bodies

Further, the base 13 comprises a base left shell 13-1, a base right shell 13-4, a first terminal assembly 13-2 and a second terminal assembly 13-3, the base 13 left shell and the base 13 right shell are assembled together to form a base shell, and the first terminal assembly 13-2 and the second terminal assembly 13-3 are arranged on the base shell and used for electrically connecting an external circuit and an inserting piece of the surge protector body.

Further, be equipped with on the surge protector body and distinguish round pin 9, it is formed with the jack to correspond on base 13 to distinguish round pin 9, can play the fool-proofing effect, guarantees the surge protector body with the correct installation of base 13.

Further, the gap integrated component 7 is made of a flame-retardant, insulating and heat-resistant polymer material, and may be made of one or a combination of PA6 (nylon 6), PA66 (nylon 66), PA46 (nylon 46) and PBT (polybutylene terephthalate), and the temperature range is 150-300 ℃.

Further, the size of the gap in the gap integrated component 7 is 0.1mm-2mm, and the corresponding size of the gap can be selected according to working parameters.

Further, the gap of the gap manifold 7 comprises a plurality of openings, the total area of the openings is 0.2mm ² -36mm ² . The total area of the corresponding openings may be selected according to the operating parameters. The openings include round holes, square holes and/or irregular holes. In this embodiment, only one opening of the gap manifold 7 is a square hole.

Furthermore, the tripping pole piece 5 and the high-temperature pole piece 8 are both made of copper, and the thickness of the high-temperature pole piece 8 is 0.2 mm-2mm.

Referring to fig. 1 to 7, when the composite surge protector of the present invention is assembled, the following steps may be adopted: step 1: installing the tripping pole piece 5 and the high-temperature pole piece 8 on the gap integrated part 7 through corresponding slots respectively, and welding two pins of the piezoresistor 6 on the high-temperature pole piece 8 and the tripping pole piece 5 through a soldering mode respectively to obtain a semi-finished product shown in fig. 3; step 2: installing the semi-finished product obtained in the step 1 into the module inner box 3; and step 3: the electrode inserting piece 10 is installed in the module inner box 3, and the electrode inserting piece 10 and the high-temperature pole piece 8 are firmly spot-welded through a current spot welding machine; step 4; installing the swing rod 11 in the module inner box 3; and 5: installing the electrode tripping insertion piece 12 on the module inner box 3, and welding the motor tripping insertion piece and the tripping pole piece 5 in a low-temperature welding tin welding mode; step 6: installing the spring 4, so that the spring 4 is connected with the swing rod 11 and the inner module box 3, the spring 4 is in a stretching state, and the swing rod 11 is blocked by the electrode tripping inserting sheet 12; step 7, sleeving the module outer box 1 on the module inner box 3; and 8: and (3) mounting the surge protector body and the base 13 to obtain the one-piece composite surge protector.

Referring to fig. 6 and 7, fig. 6 is a structural diagram of a one-piece (1P) composite surge protector according to this embodiment, and fig. 7 is a structural diagram of a five-piece (5P) composite surge protector according to this embodiment. The composite surge protector can select different number of types of composite surge protectors according to actual use requirements, for example, 2P or 3P can be used for single-phase composite power supply surge protection, and 3P to 5P can be used for three-phase composite power supply surge protection.

Referring to fig. 8, the equivalent circuit of the composite surge protector of the present embodiment is that the discharge gap (i.e. the gap of the gap integration) is arranged in parallel with the varistor. Referring to fig. 9A to 9D in combination, fig. 9A to 9D respectively show equivalent circuit diagrams of the composite surge protector of the present invention in an operating state according to some embodiments, where L is a live wire, N is a zero wire, and PE is a ground wire.

With reference to fig. 1 to 9D, when the composite surge protector of the present disclosure works, the solder disposed between the electrode trip insertion piece 12 and the trip pole piece 5 is melted, so that the motor trip insertion piece and the trip pole piece 5 are disconnected, the circuit is disconnected, the motor trip insertion piece cannot block the swing link 11, the swing link 11 swings under the pulling of the spring 4, and the surge protector body in a failure state can be observed from the transparent window piece 2 of the module outer box 1. To sum up, the beneficial effects of the utility model reside in that: the discharge gap fixing piece is specially designed to be provided with the associated electrode plate instead of a special discharge tube, so that the discharge gap fixing piece has the characteristics of large flow rate, low residual voltage, high response speed, high reliability and convenience in processing, all parts in the discharge gap are directly assembled without heating and welding, the heat damage is avoided, the installation is simple and rapid, the discharge gap fixing piece is suitable for mechanized production, the cost is low, and the discharge gap fixing piece has great economic use value; the discharge gap and the piezoresistor which are arranged in parallel can obtain larger flux compared with the series arrangement mode, and can be adapted to the scene of larger current.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (8)

1. A compound surge protector with a discharge gap connected with a piezoresistor in parallel is characterized by comprising: a surge protector body, the surge protector body includes: the module comprises an outer module box, an inner module box, a spring, a tripping pole piece, a piezoresistor, a gap integrated piece, a high-temperature pole piece, an electrode insert, a swing rod and an electrode tripping insert, wherein slots are formed in the gap integrated piece respectively corresponding to the tripping pole piece and the high-temperature pole piece, the tripping pole piece and the high-temperature pole piece are arranged on the gap integrated piece respectively through the corresponding slots, two pins of the piezoresistor are welded on the high-temperature pole piece and the tripping pole piece respectively in a soldering mode, the piezoresistor and the gap in the gap integrated piece are arranged in parallel, the gap integrated piece is arranged in the inner module box, the electrode insert is arranged on the inner module box and fixed with the high-temperature pole piece in a current welding mode, the swing rod is arranged at the position of the inner module box, the electrode tripping insert is arranged on the inner module box and welded with the tripping pole piece in a soldering mode, the spring is in a stretching state, two ends of the spring are respectively connected with the swing rod and the inner module box, the inner module box is sleeved outside the inner module box, and a window piece is arranged on the outer module box.

2. The composite surge protector with a discharge gap connected in parallel with a varistor as claimed in claim 1, further comprising a base, wherein the surge protector body is disposed on the base and electrically connected to the base through the electrode insert and the electrode release insert.

3. A composite surge protector with parallel discharge gap and varistor as in claim 2, wherein said base comprises a base left shell, a base right shell, a first terminal assembly and a second terminal assembly, said base left shell and said base right shell assembled together to form a base housing, said first terminal assembly and said second terminal assembly disposed on said base housing.

4. A composite surge protector with a parallel discharge gap and a parallel varistor as claimed in claim 2, wherein the surge protector body is provided with a discrimination pin, and the base is formed with a socket corresponding to the discrimination pin.

5. A compound surge protector with a discharge gap connected in parallel with a varistor according to any of claims 1 to 3, characterized in that the size of the gap in the gap integration is 0.1mm-2mm.

6. A combined surge protector with parallel discharge gap and voltage dependent resistor as claimed in any of claims 1 to 3, wherein the gap of said gap integration member comprises a plurality of openings, and said openings areTotal area of 0.2mm ² -36mm ² 。

7. A composite surge protector with parallel discharge gap and varistor as claimed in claim 6, wherein said openings comprise round, square and/or irregular holes.

8. A composite surge protector with a parallel discharge gap and a parallel varistor as claimed in any one of claims 1 to 3, wherein the tripping pole piece and the high temperature pole piece are both made of copper, and the thickness of the high temperature pole piece is 0.2 mm-2mm.

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