CN115360685A - Surge protector - Google Patents

Abstract

A surge protector, comprising a base and a ferrule assembly, the base includes a U-shaped cross-section, the two ends of the U-shaped base have a first terminal and a second terminal, and the ferrule assembly is equipped with There is an anti-surge module, the ferrule assembly can be electrically connected to the base, and the housing of the ferrule assembly includes graphite components, PCB components, and metal electrodes; the graphite component is a stack of graphite sheets and insulating layers. layer, the left and right graphite sheets of the laminate are connected to two metal electrodes, the pcb assembly includes a pcb board and a metal row pin, and the metal row pin is connected to the graphite sheet; multiple grooves are provided in the housing, so The graphite sheet and the insulating layer are engaged in the groove.

Description

surge protector

technical field

The invention relates to a surge protector.

Background technique

When lightning overvoltage, lightning electromagnetic pulse and abnormal sudden change of power supply voltage in the line, surge (instantaneous overvoltage exceeding the normal working voltage) often occurs, and causes damage to the electrical system and electrical equipment. In order to avoid the occurrence of the above situation, each All kinds of surge protectors appear in our daily life. Surge protectors are used to suppress surges on the line and discharge overcurrent on the line. Surge protector, also called lightning protector, is an electronic device that provides safety protection for various electronic equipment, instruments, and communication lines. When the electrical circuit or communication line suddenly generates a peak current or voltage due to external interference, the surge protector can conduct the shunt in a very short time, so as to avoid the damage of the surge to other equipment in the circuit.

Surge protector, suitable for AC 50/60HZ or DC, power supply system with rated voltage below 2000V, to protect against indirect lightning and direct lightning effects or other transient overvoltage surges, suitable for family residences, tertiary industries and Requirements for surge protection in the industrial field.

The surge protector generally includes a voltage sensitive element, a release device, an indicating device, etc., and the release device includes a spring and a conductor, where the conductor is welded to the electrode sheet of the voltage sensitive element through a welding bar. When the rated value is exceeded, the electrode sheet heats up to melt the welding rod, and the conductor of the release device is separated from the electrode sheet under the action of the spring. Under normal conditions, the varistor inside the surge protector is at a high resistance value, which is equivalent to an open circuit state. When a lightning strike occurs, the resistance value of the varistor decreases rapidly under the action of high voltage, similar to a short circuit state, through the varistor The resistor conducts the lightning strike current to the ground to eliminate the overvoltage caused by the lightning strike.

The screw on the original surge protector passes through the conductive metal body, and the conductive metal body is multi-layered graphite, so as to realize the fixed installation of the graphite; at the same time, the original module part has no plug pins and does not have the plug-in function. , and the original pin header is exposed, and the tripping is unstable.

The original pin header is exposed, improvement: the existing set has plastic parts to wrap and protect it;

Improvement: The fuse, the electrode, and the frame are connected by soldering. When heated, the tin will melt away, so that the fuse, the electrode and the pin are out of the fixed state, which is convenient for tripping.

Contents of the invention

The object of the present invention is to provide a surge protector, which will not damage the structure of the multilayer graphite conductor, has a plug-in function, and can protect exposed pin headers to achieve stable tripping.

Above-mentioned purpose of the present invention is achieved through the following scheme:

A surge protector, comprising a base and a ferrule assembly, the base includes a U-shaped cross-section, the two ends of the U-shaped base have a first terminal and a second terminal, and the ferrule assembly is equipped with There is an anti-surge module, the ferrule assembly can be electrically connected to the base, and the housing of the ferrule assembly includes graphite components, PCB components, and metal electrodes; the graphite component is a stack of graphite sheets and insulating layers. layer, the left and right graphite sheets of the laminate are connected to two metal electrodes, and the pcb assembly includes a pcb board and a metal row pin, and the metal row pin is connected to the graphite sheet;

It is characterized in that: there are multiple grooves in the housing, the graphite sheet and the insulating layer are engaged in the grooves, the bottom of the ferrule assembly has two pins, and the two The metal electrodes can be electrically connected to the plug pins respectively, the base and the plug pins are provided with corresponding slots, and the two slots are electrically connected to the first terminal and the second terminal.

Further, the metal electrode on the right side of the stack is connected to the safety plate and the frame by soldering, and the frame is electrically connected to the plug pin.

Further, the visible part of the pin header is protected by a plastic wrap.

Further, the housing side of the ferrule assembly has an elastic protrusion, and the base is provided with a slot that can cooperate with the elastic protrusion.

Further, the safety plate is connected to the lower end of the spring, and the upper end of the spring is connected to the housing.

Further, the slot is a u-shaped structural slot, and the structural members on both sides of the u-shaped structure are elastic so as to be able to compress and fix the pin.

Further, there are multiple ferrule assemblies.

Further, there are multiple graphite components in each ferrule component.

Said scheme of the present invention can obtain following technical effect:

The screw on the original surge protector passes through the set conductive metal body, and multi-layer graphite is formed between the conductive metal bodies. The multi-layer graphite and the insulator of the present invention are engaged and fixed in the housing, and the present invention does not set the screw through The conductive metal body reduces the steps of opening holes on the conductive metal body, simplifies the process, and reduces the difficulty of assembly.

The bottom of the plug-in module of the surge protector of the present invention is provided with a plug-in connection and a base; the fast plug-in and pull-out function is realized, and the convenience of use is improved.

The surge protector of the present invention is provided with plastic parts to wrap and protect the pin row, thereby improving the service life of the pin row.

In the surge protector of the present invention, the fuse, the electrode, and the frame are connected by soldering. When heated, the tin will melt away, so that the fuse, the electrode and the pin are out of the fixed state, which is convenient for tripping.

Description of drawings

Fig. 1 is a top view of the structure of the surge protector of the present invention.

Fig. 2 is a structural attention view of the surge protector of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Referring to Figures 1 and 2, a surge protector includes a base 9 and a ferrule assembly, the base 9 has a U-shaped cross-section, and the two ends of the U-shaped base have a first terminal and a second terminal end, the ferrule assembly is provided with a surge-proof module, the ferrule assembly can be electrically connected to the base, and the shell 1 of the ferrule assembly includes a graphite assembly 2, a PCB assembly, and a metal electrode; The graphite component is a laminate formed of graphite sheets and insulating layers. The left and right graphite sheets of the laminate are connected to two metal electrodes. The PCB component includes a PCB board and a metal pin header 5, and the metal pin header 5 is connected to the graphite sheet ;

There are multiple grooves in the housing, the graphite sheet and the insulating layer are engaged in the grooves, the bottom of the ferrule assembly has two pins 3, and the two metal electrodes It can be electrically connected with the plugging pins respectively, the base and the plugging pins are correspondingly provided with slots, and the two slots are electrically connected with the first terminal and the second terminal.

The metal electrode 7 on the right side of the stack is connected to the safety plate 6 and the frame 8 by soldering, and the frame is electrically connected to the plug pin.

The visible part of the pin header is wrapped and protected by the plastic part 4, and the plastic part 4 wraps and protects the pin header 5, which improves the service life of the pin header.

The housing side of the ferrule assembly has an elastic protrusion, and the base is provided with a slot that can cooperate with the elastic protrusion.

The safety plate 6 is connected to the lower end of the spring, and the upper end of the spring is connected to the housing.

The slot is a U-shaped structural slot, and the structural parts on both sides of the U-shaped structure are elastic so as to be able to squeeze and fix the pin.

There are multiple ferrule assemblies, and there are multiple graphite assemblies in each ferrule assembly.

The conductor and the insulator of the above surge protector are fastened and fixed in the casing, and no screw passes through the conductor, thus avoiding damage to the structure of the conductor.

The bottom of the ferrule module of the above-mentioned surge protector is provided with a socket and a base; the function of fast plugging and unplugging is realized, and the convenience of use is improved.

Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still It is possible to modify the technical solutions recorded in the foregoing embodiments, or to perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. within the spirit and principles of the present invention shall be included in the within the protection scope of the present invention.

Claims (8)

1. A surge protector, comprising a base and a ferrule assembly, the base includes a U-shaped cross-section, the two ends of the U-shaped base have a first terminal and a second terminal, the ferrule assembly An anti-surge module is provided inside, and the ferrule assembly can be electrically connected to the base. The housing of the ferrule assembly includes a graphite assembly, a PCB assembly, and a metal electrode; the graphite assembly is formed by a graphite sheet and an insulating layer. The stacked layers, the left and right two sheets of graphite of the stack are connected to two metal electrodes, the pcb assembly includes a pcb board and a metal pin header, and the metal pin header is connected to the graphite sheet; It is characterized in that: there are multiple grooves in the housing, the graphite sheet and the insulating layer are engaged in the grooves, the bottom of the ferrule assembly has two pins, and the two The metal electrodes can be electrically connected to the plug pins respectively, the base and the plug pins are provided with corresponding slots, and the two slots are electrically connected to the first terminal and the second terminal. 2 . The surge protector according to claim 1 , wherein the metal electrode on the right side of the stack is connected to the safety plate and the frame by soldering, and the frame is electrically connected to the plug pin. 3. The surge protector according to claim 1, wherein the visible part of the pin header is protected by a plastic wrap. 4. The surge protector according to claim 1, wherein the housing side of the ferrule assembly has an elastic protrusion, and the base is provided with a slot that can cooperate with the elastic protrusion. 5. The surge protector according to claim 1, wherein the safety plate is connected to the lower end of the spring, and the upper end of the spring is connected to the housing. 6 . The surge protector according to claim 1 , wherein the slot is a U-shaped structural slot, and the structural members on both sides of the U-shaped structure are elastic so as to be able to compress and fix the pins. 7. The surge protector according to claim 6, wherein there are multiple ferrule assemblies. 8. The surge protector according to claim 7, wherein there are multiple graphite components in each ferrule component.

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