CN212626360U - Surge protection device - Google Patents

Abstract

The utility model provides a surge protection device, which comprises a protection insulation board, wherein a current conducting plate component used for electrically connecting a protection circuit is arranged on a first side surface of the protection insulation board, and a protector is arranged on a second side surface; the conducting plate assembly comprises a first conducting plate, a second conducting plate and a third conducting plate which are respectively used for electrically connecting a zero line, a live line and a ground line; the protector comprises three groups of protection element assemblies, wherein one protection element assembly is connected between every two first current-conducting plates, every two second current-conducting plates and every two third current-conducting plates in series; each group of the protection element components comprises an overvoltage protector and an over-temperature protector which are connected in series; the pins of the overvoltage protector and the over-temperature protector penetrate through the protective insulating plate and are electrically connected to the conducting plate component. Through setting up the protection insulation board, keep apart the current conducting plate and the protector that will connect the protection circuit, realized surge protection effect, solve surge protection circuit and concatenate the problem that leads to the electrical isolation performance poor simultaneously.

Description

Surge protection device

Technical Field

The utility model belongs to the technical field of electrical equipment, specificly relate to a surge protector for domestic socket protection.

Background

The power socket is used for being externally connected with one or more plugs needing to be connected with a power supply, and surge current can be generated when the plugs are plugged into the socket, so that electric arcs are caused; under high current conditions, the arc may damage the electronic equipment connected to the plug or cause a fire in the socket.

In the prior art, in order to realize the surge protection of a household socket, a surge protection device is generally used as an external instrument and is connected in series between lines needing protection. Although the protection elements connected in series realize surge protection, the protection elements are directly exposed between two lines in use, the electrical isolation performance of the protection elements is obviously reduced, and the electrical safety performance between the protection lines is reduced.

Therefore, a surge protection device with safe use and good electrical isolation performance is urgently needed.

Disclosure of Invention

The utility model aims at providing a surge protector to solve surge protection circuit and concatenate the problem that leads to the electrical isolation performance poor.

The specific scheme is as follows:

a surge protection device comprises a protection insulating plate, wherein a current conducting plate assembly used for electrically connecting a protection circuit is arranged on a first side surface of the protection insulating plate, and a protector is arranged on a second side surface of the protection insulating plate;

the conducting plate assembly comprises a first conducting plate, a second conducting plate and a third conducting plate which are respectively used for electrically connecting a zero line, a live line and a ground line;

the protector comprises three groups of protection element assemblies, wherein one protection element assembly is connected between every two first current-conducting plates, every two second current-conducting plates and every two third current-conducting plates in series;

each group of the protection element components comprises an overvoltage protector and an over-temperature protector which are connected in series; the pins of the overvoltage protector and the over-temperature protector penetrate through the protective insulating plate and are electrically connected to the conducting plate component.

The utility model discloses a further technical scheme does: in the protection component assembly, the specific series structure of the overvoltage protector and the over-temperature protector is as follows: a switching conductive plate is further arranged on the first side face, and pins of the overvoltage protector and the over-temperature protector penetrate through the protective insulating plate and then are electrically connected to the switching conductive plate.

The utility model discloses a further technical scheme does: the first conductive plate, the second conductive plate and the third conductive plate are electrically connected with two patch cords respectively, and the patch cords are rigid metal rods.

The utility model discloses a further technical scheme does: the protective insulating plate is provided with a plurality of pins and a plurality of inserting circuit modules;

the plug circuit module comprises an upper insulating plate and three groups of plug connectors arranged on the upper insulating plate;

each plug connector penetrates through the upper insulating plate and extends towards the protective insulating plate in a protruding mode;

the pin circuit module comprises a lower insulating plate and three pins, wherein the top end of each pin penetrates through the lower insulating plate and protrudes towards the protective insulating plate;

the two patch cords on the first conductive plate, the second conductive plate and the third conductive plate are respectively and correspondingly connected with the plug connector and the plug pin.

The utility model discloses a further technical scheme does: on the protective insulating plate, the first conductive plate, the third conductive plate and the second conductive plate are sequentially arranged from top to bottom;

the second current-conducting plate and the third current-conducting plate are Z-shaped, and one end of the first current-conducting plate extends downwards to the position below the second current-conducting plate so as to coat the second current-conducting plate and the third current-conducting plate.

Has the advantages that: the utility model provides a surge protection device, which comprises a protection insulation board, wherein a current conducting plate component used for electrically connecting a protection circuit is arranged on a first side surface of the protection insulation board, and a protector is arranged on a second side surface; the conducting plate assembly comprises a first conducting plate, a second conducting plate and a third conducting plate which are respectively used for electrically connecting a zero line, a live line and a ground line; the protector comprises three groups of protection element assemblies, wherein one protection element assembly is connected between every two first current-conducting plates, every two second current-conducting plates and every two third current-conducting plates in series; each group of the protection element components comprises an overvoltage protector and an over-temperature protector which are connected in series; the pins of the overvoltage protector and the over-temperature protector penetrate through the protective insulating plate and are electrically connected to the conducting plate component. Through setting up the protection insulation board, keep apart the current conducting plate and the protector that will connect the protection circuit, realized surge protection effect, solve surge protection circuit and concatenate the problem that leads to the electrical isolation performance poor simultaneously.

Drawings

Fig. 1 shows an exploded view of a surge protection socket according to an embodiment of the present invention after removing a housing;

fig. 2 shows a schematic view of the surge protection device (angle one) of fig. 1;

fig. 3 shows a schematic view of the surge protector (angle two) of fig. 1;

fig. 4 shows a front view of the surge protection device of fig. 1.

Detailed Description

For further explanation, the present invention provides the attached drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The present invention will now be further described with reference to the accompanying drawings and detailed description.

Referring to fig. 1, the embodiment provides a surge protection device, which includes an insulating housing (removed) having a substantially rectangular parallelepiped shape, and a plug circuit module 4, a surge protection device 5, and a pin circuit module 2 are sequentially provided from top to bottom in the insulating housing.

The plug circuit module 4 includes an upper insulating plate 40 and five sets of plug connectors 41 made of elastic metal material disposed on the upper insulating plate, in this embodiment, the plug connectors 41 are preferably brass elastic hoop sheets, and the plug connectors 41 have a triangular arrangement and corresponding three-wire connection plug assembly disposed vertically above.

Wherein, the upper insulating plate 40 is fixed at the upper position of the pin circuit module 2, and the surge protection device 5 is arranged between the upper insulating plate 40 and the plug circuit module 2; the main body of the plug 41 is provided in the upper insulating plate 40, and the plug 41 is embedded and fixed on the upper insulating plate 40, and its bottom end passes through the upper insulating plate 40 to protrude toward the surge protection device 5. The upper insulating plate 40 realizes the separation of the plugging mechanism and the protection circuit, and the safety performance of plugging operation is better; and different mechanisms are isolated, and the influence of the physical plugging process on the performance of the protective device is reduced.

As shown in fig. 2 to 4, the surge protector 5 includes a vertically arranged protective insulating plate 50, and the protective insulating plate 50 is vertically fixed to a position below the upper insulating plate 40. The protective insulating plate 50 is provided with three protective circuits formed by connecting an overvoltage protector 52 and an overtemperature protector 51 in series; the method specifically comprises the following steps:

a conductive plate assembly for electrically connecting the protection circuit is provided on a first side surface (i.e., a surface for electrically connecting the circuit) of the protection insulating plate 50, and a protector is provided on a second side surface; the conductive plate assembly includes a first conductive plate 531, a second conductive plate 532, and a third conductive plate 533 for electrically connecting a neutral wire, a live wire, and a ground wire, respectively, preferably, the conductive plates are thin copper plates;

the protector comprises three groups of protection element components, wherein each group of protection element components comprises an over-temperature protector 51 and an over-voltage protector 51 which are connected in series; in the protection element assembly, the specific series structure of the over-temperature protector 51 and the overvoltage protector 51 is as follows: a Z-shaped switching conductive plate is further disposed on the first side surface of the protective insulating plate 50, and a pin adjacent to the over-temperature protector 51 and the over-voltage protector 51 is electrically connected to the switching conductive plate after penetrating through the protective insulating plate 50, so as to electrically connect a group of protective element assemblies.

The protection element assembly is connected in series between the first current-conducting plate 531, the second current-conducting plate 532 and the third current-conducting plate 533, and a triangular connection circuit is formed, the first current-conducting plate 531 and the third current-conducting plate 533 are taken as an example, the pins of the over-temperature protector 51 and the over-voltage protector 51 penetrate through the protection insulating plate 50, the pins of the over-temperature protector 51 are electrically connected to the tail end of the first current-conducting plate 531, and the over-voltage protector 51 is electrically connected to the head end of the third current-conducting plate 533, so that series connection is realized.

In order to achieve the optimized device layout, the present embodiment arranges the elements in a staggered manner, and further achieves the electrical isolation effect, on the protective insulating plate 50, the first conductive plate 531, the third conductive plate 533, and the second conductive plate 532 are arranged in sequence from top to bottom: the second conductive plate 532 and the third conductive plate 533 are both in a zigzag shape, so that end-to-end connection is realized; then, the first end of the first conductive plate 531 extends downward to the position below the second conductive plate 532 to coat the second conductive plate 532 and the third conductive plate 533, so as to realize end-to-end connection, and meanwhile, realize the dislocation arrangement of the over-temperature protector 51 and the over-voltage protector 51.

The overvoltage protector 52 and the over-temperature protector 51 are both arranged in the element room and fixed on the protective insulating plate 50, and then pins of the overvoltage protector 52 and the over-temperature protector 51 penetrate through the protective insulating plate 50 to conduct corresponding leads; this structure setting has realized keeping apart protection device and interconnecting link, and its electrical safety performance is good, and the processing of being connected of interconnecting link of being convenient for.

The bottom end of the plug-in unit 41 penetrates through and protrudes out of the upper insulating plate 40, and is directly electrically connected to the corresponding pin, so as to realize surge protection, the three pins are electrically connected with each other through a protection circuit, which is specific:

the pin circuit module 2 comprises a lower insulating plate and three pins, wherein the top end of each pin penetrates through the lower insulating plate and protrudes towards the protective insulating plate;

the first conductive plate 531, the second conductive plate 532 and the third conductive plate 533 are electrically connected to two patch cords 53, and then each conductive plate is correspondingly connected to one of the plug members 41 and one of the pins through one patch cord 53, so that the electrical connection therebetween is realized, and the electrical isolation of the connection circuit is also realized.

Specifically, three pins are respectively corresponding to LNG lines, and the L-N, L-G and the N-G are connected in series with the protection circuit to realize surge protection among the lines. Wherein, this patch cord of preferred is the rigid metal pole, and its outside cladding has the insulating paint layer, and the installation now with patch cord one end welded fastening, the other end can be stereotyped in corresponding the welding point, convenient operation and electrical isolation performance are good.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (5)

1. A surge protection device comprises a protection insulating plate, wherein a current conducting plate assembly used for electrically connecting a protection circuit is arranged on a first side surface of the protection insulating plate, and a protector is arranged on a second side surface of the protection insulating plate; the method is characterized in that:

the conducting plate assembly comprises a first conducting plate, a second conducting plate and a third conducting plate which are respectively used for electrically connecting a zero line, a live line and a ground line;

the protector comprises three groups of protection element assemblies, wherein one protection element assembly is connected between every two first current-conducting plates, every two second current-conducting plates and every two third current-conducting plates in series;

each group of the protection element components comprises an overvoltage protector and an over-temperature protector which are connected in series; the pins of the overvoltage protector and the over-temperature protector penetrate through the protective insulating plate and are electrically connected to the conducting plate component.

2. The surge protector of claim 1, wherein the series arrangement of the overvoltage protector and the over-temperature protector in the protection component assembly is: a switching conductive plate is further arranged on the first side face, and pins of the overvoltage protector and the over-temperature protector penetrate through the protective insulating plate and then are electrically connected to the switching conductive plate.

3. The surge protection device of claim 1, wherein: the first conductive plate, the second conductive plate and the third conductive plate are electrically connected with two patch cords respectively, and the patch cords are rigid metal rods.

4. The surge protection device of claim 3, wherein: the protective insulating plate is provided with a plurality of pins and a plurality of inserting circuit modules;

the plug circuit module comprises an upper insulating plate and three groups of plug connectors arranged on the upper insulating plate; each plug connector penetrates through the upper insulating plate and extends towards the protective insulating plate in a protruding mode;

the pin circuit module comprises a lower insulating plate and three pins, wherein the top end of each pin penetrates through the lower insulating plate and protrudes towards the protective insulating plate;

the two patch cords on the first conductive plate, the second conductive plate and the third conductive plate are respectively and correspondingly connected with the plug connector and the plug pin.

5. The surge protection device of any of claims 1 to 4, wherein: on the protective insulating plate, the first conductive plate, the third conductive plate and the second conductive plate are sequentially arranged from top to bottom;

the second current-conducting plate and the third current-conducting plate are Z-shaped, and one end of the first current-conducting plate extends downwards to the position below the second current-conducting plate so as to coat the second current-conducting plate and the third current-conducting plate.

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