CN218976344U

CN218976344U - Surge protection device

Info

Publication number: CN218976344U
Application number: CN202223030665.6U
Authority: CN
Inventors: 毛小毛
Original assignee: Prosurge Electronics Co Ltd
Current assignee: Prosurge Electronics Co Ltd
Priority date: 2022-11-15
Filing date: 2022-11-15
Publication date: 2023-05-05
Anticipated expiration: 2032-11-15

Abstract

The utility model belongs to the technical field of circuit protection devices, and provides a surge protection device, which comprises: the plug module is provided with a surge protection element and comprises an electrode plate; the base is provided with a conducting branch connected with the plug module, the conducting branch comprises an elastic conducting component, the elastic conducting component is arranged to be abutted with a circuit where an electrode slice of the surge protection element is located when the surge protection element is effective, and the conducting branch continues to conduct a communication circuit when the surge protection element fails and needs to be replaced; and when the plug module is replaced, the communication signals of the communication circuit are not interrupted. Therefore, when the invalid lightning protection module is replaced, the elastic conductive part of the base is restored to deform to maintain the conduction connection relation of the original circuit, so that the communication signal is not interrupted when the pluggable module is replaced, the condition that the communication signal is required to be connected at any time is met, and the network is ensured to be continuous.

Description

Surge protection device

Technical Field

The utility model relates to the technical field of circuit protection devices, in particular to a surge protection device.

Background

Surge protector (Surge Protection Device, SPD for short) is an indispensable device in lightning protection of electronic equipment, and is often called "arrester" or "overvoltage protector" in the past; the surge protector has the function that when the peak current or voltage is suddenly generated in an electric loop or a communication line due to external interference, the surge protector can conduct and shunt in a very short time, so that the damage of the surge to other equipment in the loop is avoided.

For example, chinese patent application No. CN201010019307.8 discloses a surge suppressor with thermal protection function, comprising a housing cover and a base with a mounting plate, on which a surge suppressing element and a thermal protection device are provided, the thermal protection device comprising a metal protrusion part electrically connected to the b electrode of the surge suppressing element, a compression spring, a slider with an arc extinguishing member movable on a rail groove of the mounting plate; during normal operation, the conductive metal component and the metal protruding part are electrically connected through a low-temperature welding spot, when the surge suppression element fails and a power frequency accident current flows through the surge suppression element, the low-temperature welding spot is melted, the conductive metal component breaks the connection with the metal protruding part, the spring pushes the arc extinguishing component on the sliding block to move, the broken gap is blocked, an air flow is generated, and an arc between the conductive metal component and the metal protruding part breaking gap is blown out, so that safer, timely and reliable circuit protection is provided.

The inventor finds out in the process of realizing the utility model, although the prior art optimizes the protection circuit in the surge protector, the safety performance of the surge protector is improved; however, when the lightning protection module needs to be replaced, a circuit corresponding to the lightning protection module is usually required to be interrupted; for example, when the surge suppressor is applied to a communication circuit, the corresponding communication signal needs to be disconnected.

Disclosure of Invention

The utility model provides a surge protection device which can not interrupt communication signals when a failed lightning protection module is replaced.

An embodiment of the present utility model provides a surge protection device, including:

the plug module is provided with a surge protection element and comprises electrode plates which are respectively and electrically connected with two ends of the surge protection element;

a base for mounting the plug module, wherein a conductive circuit communicated with the electrode plate is arranged on the base; the conducting circuit of the base is arranged in a communication circuit where the surge protection device is located, a conducting branch connected with the plug module is arranged on the conducting circuit of the base, the conducting branch comprises an elastic conducting component, the elastic conducting component is arranged to be abutted with the circuit where the electrode slice of the surge protection element is located when the surge protection element is effective, and the conducting branch continues to conduct the communication circuit where the surge protection device is located when the surge protection element fails and needs to be replaced; and when the plug module is replaced, the communication signal of the communication circuit where the surge protection device is located is not interrupted.

In a preferred implementation manner of the embodiment of the utility model, the conductive circuit comprises a first connecting sheet for receiving an input signal and a second connecting sheet for transmitting an output signal, and a conductive connecting sheet is arranged between the first connecting sheet and the second connecting sheet; and the other end of the first connecting sheet and the other end of the second connecting sheet are respectively abutted with the elastic first contact part and the elastic second contact part of the conductive connecting sheet.

In a further preferred implementation manner of the embodiment of the present utility model, at least one of the other end of the first connecting piece and the first contact portion of the conductive connecting piece is provided with an elastic end portion; at least one of the other end of the second connecting sheet and the second contact part of the conductive connecting sheet is provided with an elastic end part; and the conductive member where the elastic end portion is located constitutes the elastic conductive member.

In a still further preferred embodiment of the present embodiment, the elastic end portion comprises a curved conductive sheet.

In a preferred implementation manner of the embodiment of the present utility model, the surge protection device further includes: and the guide rail is connected to the bottom of the base and is arranged as a grounding end of the surge protection device.

In a further preferred implementation manner of the embodiment of the present utility model, the surge protection device includes a plurality of plug modules, each of which is respectively mounted on a corresponding base; and the guide rail is connected with a plurality of the bases.

In a further preferred implementation manner of the embodiment of the present utility model, the base includes a grounding part, and the grounding part is electrically connected to a grounding end of the plug-in module; the grounding part is also electrically connected to the guide rail to realize physical grounding of the guide rail.

In a preferred implementation manner of the embodiment of the present utility model, the support corresponding to the plug module can place at least two PCB assemblies, and each PCB assembly is provided with a two-way input/output protection circuit, and accordingly at least four-way input/output protection is implemented.

In a preferred implementation manner of the embodiment of the present utility model, the conducting branch in the base includes two sets of inserting pieces and a circuit board assembly, and when the inserting and pulling module is not inserted into the base, the circuit between the input terminal and the output terminal is conducted through self elasticity of at least one of the two sets of inserting pieces and the circuit board assembly; when the plug module is inserted into the base, a circuit between the inserting piece and the circuit board assembly is connected with a surge protection element in the plug module in series.

In the technical scheme provided by the utility model, the conducting circuit of the base is provided with the conducting branch connected with the plug module in parallel, and the conducting branch is arranged to continuously conduct the communication circuit when the surge protection element fails and needs to be replaced; thus, when the surge protection element in the plug module fails and/or the surge protection element is replaced, the conductive branch continues to conduct the communication circuit, so that the communication circuit is not interrupted. And when the plug module is replaced, the communication signals of the communication circuit are not interrupted. Further, since the surge protection device further includes the guide rail connected to the bottom of the base, the guide rail is provided as the ground terminal of the surge protection device, so that the surge protection element is more conveniently grounded through the guide rail and introduced into the earth mine.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure and/or process particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

Fig. 1 is an exploded view of a surge protection device according to an embodiment of the present utility model.

Fig. 2 is an exploded view of a base in a surge protection device according to an embodiment of the present utility model.

Fig. 3 is a schematic diagram of a base and a guide rail in a first state in a surge protection device according to an embodiment of the present utility model.

Fig. 4 is a schematic diagram of a base and a guide rail in a second state in a surge protection device according to an embodiment of the present utility model.

Fig. 5 is a schematic diagram of a surge protection device according to an embodiment of the present utility model in a first state.

Fig. 6 is a schematic diagram of a surge protection device according to an embodiment of the present utility model in a second state.

Reference numerals

110-a housing is inserted and pulled out,	112-the protrusion(s),	a 120-plug-in and pull-out frame,
			130-a base housing, which is provided with a base,	132-a slide rail, which is provided with a plurality of slide grooves,	140-a base body, wherein the base body,
141-a base frame, wherein the base frame is provided with a plurality of grooves,	142-a first connecting piece, which is connected with the first connecting piece,	142 a-a first resilient end portion,
			143-a first conductive connecting piece,	144-a second conductive connecting piece,	145-a second connecting piece, which is provided with a second connecting piece,
146-a fourth connecting piece, which is connected with the first connecting piece,	147-the snap-fit is provided with a snap-fit,	148-a third connecting piece, which is provided with a third connecting piece,
			148 a-a third resilient end portion,	245-a fifth connecting piece, which is provided with a third connecting piece,	244-a third conductive connecting pad,
247 to a sixth connecting piece, and the connecting piece is provided with a connecting groove,	246-a seventh one of the connecting pieces,	243-fourth conductive tabs, which are connected in series,
			242-an eighth connecting piece, which is provided with a plurality of connecting grooves,	150-a part for guiding the earth,	160-a ground rail, which is connected to the ground,
122-lightning protection element.

Detailed Description

The following will describe embodiments of the present utility model in detail with reference to the drawings and examples, thereby solving the technical problems by applying technical means to the present utility model, and realizing the technical effects can be fully understood and implemented accordingly. It should be noted that these specific descriptions are only for easy and clear understanding of the present utility model by those skilled in the art, and are not meant to be limiting; and as long as no conflict is formed, each embodiment of the present utility model and each feature of each embodiment may be combined with each other, and the formed technical solutions are all within the protection scope of the present utility model.

In addition, the terminology used in the embodiments of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

The technical scheme of the utility model is described in detail below through the attached drawings and specific embodiments.

Examples

As shown in fig. 1 and 2, the present embodiment provides a surge protection device capable of not interrupting a communication signal when a failed lightning protection module is replaced. Specifically, the surge protection device includes:

the plug module is provided with a surge protection element and comprises electrode plates which are respectively and electrically connected with two ends of the surge protection element; the plug module provided in this embodiment includes a plug housing 110, at least one protrusion 112 is disposed on a side wall of the plug housing 110, and the protrusion 112 is matched with a sliding rail 132 in a base housing 130, so that the plug module is guided to be smoothly mounted to the base, and the protrusion 112 and the sliding rail 132 can be matched to play a limiting role, so that after the plug module is mounted to the base, the plug module can be stably mounted to the base. A plug frame 120 is arranged in the plug housing 110, and the plug frame 120 is used for installing a surge protection element and other circuit elements connected with the surge protection element; the specific types of the surge protection element and other circuit elements (such as the conductive connecting sheet) can be determined according to actual requirements, and the working principle of the surge protection element and other circuit elements can be determined according to the prior art, for example, various surge protection devices mentioned in the background art.

A base for mounting the plug module, wherein the base comprises a base shell 130, and a sliding rail 132 is arranged on the base shell 130; a base frame 140, the base frame 140 being for mounting circuit elements of the conductive circuit; a conductive circuit which is communicated with the electrode plate is arranged on the base; the conductive circuit refers to a circuit between an electrical signal receiving end for receiving an input electrical signal and an electrical signal output end of the base.

The conductive circuit of the base is arranged in a communication circuit where the surge protection device is located, a conduction branch connected with the plug module is arranged on the conductive circuit of the base, and the communication circuit refers to an external communication circuit where the surge protection device is required to be arranged, and generally refers to a circuit corresponding to the whole communication system where the whole surge protection device is located. The conducting branch circuit can be a conducting circuit or a circuit which is only conducted with the circuit where the plug module is located in the conducting circuit; the conducting branch comprises an elastic conducting component, the elastic conducting component is arranged to be abutted with a circuit where an electrode slice of the surge protection element is located when the surge protection element is effective, and the conducting branch continues to conduct a communication circuit where the surge protection device is located when the surge protection element is invalid and needs to be replaced; and when the plug module is replaced, the communication signal of the communication circuit where the surge protection device is located is not interrupted.

Therefore, a conducting branch connected with the plug module in parallel is arranged on the conducting circuit of the base, and the conducting branch is arranged to continuously conduct the communication circuit when the surge protection element fails and needs to be replaced; thus, when the surge protection element in the plug module fails and/or the surge protection element is replaced, the conductive branch continues to conduct the communication circuit, so that the communication circuit is not interrupted. And when the plug module is replaced, the communication signals of the communication circuit are not interrupted.

In a preferred implementation manner of this embodiment, the conductive circuit includes a first connection piece that receives an input signal, a second connection piece that transmits an output signal, and a conductive connection piece disposed between the first connection piece and the second connection piece; and the other end of the first connecting sheet and the other end of the second connecting sheet are respectively abutted with the elastic first contact part and the elastic second contact part of the conductive connecting sheet. In a further preferred embodiment, at least one of the other end of the first connecting piece and the first contact portion of the conductive connecting piece is provided with an elastic end portion; at least one of the other end of the second connecting sheet and the second contact part of the conductive connecting sheet is provided with an elastic end part; and the conductive member where the elastic end portion is located constitutes the elastic conductive member.

In a preferred implementation manner of this embodiment, the conducting branch in the base includes two sets of inserting pieces and a circuit board assembly, and when the inserting and pulling module is not inserted into the base, the circuit between the input terminal and the output terminal is conducted through self elasticity of at least one of the two sets of inserting pieces and the circuit board assembly; when the plug module is inserted into the base, a circuit between the inserting sheet and the circuit board assembly is connected with a surge protection element in the plug module in series.

Specifically, as shown in fig. 1 and 2, the conductive circuit in the base includes: first connecting piece 142, first conductive connecting piece 143, second connecting piece 145, third connecting piece 148, fourth connecting piece 146, second conductive connecting piece 144, fifth connecting piece 245, third conductive connecting piece 244, sixth connecting piece 247, seventh connecting piece 246, fourth conductive connecting piece 243, eighth connecting piece 242; the specification is that every two connecting sheets and one conductive connecting sheet in the middle of the two connecting sheets form a group of input and output circuits, so that at least two PCB assemblies can be placed on a bracket corresponding to the plug module, a two-way input and output protection circuit is arranged in each PCB assembly, and at least four-way input and output protection is correspondingly realized. And each tab may also be referred to as a tab, with the ends of each tab and conductive tab being provided as resilient ends, e.g., a first resilient end 142a at the end of the first tab 142, a third resilient end 148a at the end of the third tab 148; however, the present embodiment is not limited thereto, and for example, an elastic end may be provided at an end of the conductive connecting piece, or an elastic end may be provided at a place where the conductive connecting piece and/or the connecting piece are engaged, respectively. Under normal conditions, the electrode plate of the plug-in module can be inserted between the conductive connecting sheet and the connecting end of the connecting sheet; when the plug module needs to be replaced, after the plug module is pulled out, the conductive connecting sheet and the connecting sheet are continuously connected under the action of the elastic end part, so that signals of the communication circuit cannot be interrupted. Fig. 5 is a schematic diagram of the surge protection device in a first state (a state with a plug module) according to the present embodiment, and fig. 6 is a schematic diagram of the surge protection device in a second state (a state without a plug module) according to the present embodiment; wherein, the end of the first connecting piece 142 is connected with an L1 line, the end of the second connecting piece 145 is connected with a T1 line, the end of the third connecting piece 148 is connected with an L2 line, the end of the fourth connecting piece 146 is connected with a T2 line, the end of the fifth connecting piece 245 is connected with an L3 line, the end of the sixth connecting piece 247 is connected with a T3 line, the end of the seventh connecting piece 246 is connected with an L4 line, and the end of the eighth connecting piece 242 is connected with a T4 line.

Further preferably, as shown in fig. 2, the elastic end portion comprises a curved conductive sheet. This reduces the extent of frictional damage of the resilient end portion with other conductive members during installation.

As shown in fig. 2, the base is further provided with a grounding element 150, and the grounding element 150 is also provided with an elastic end portion, and the elastic end portion can be connected with the conductive circuit. Specifically, the base includes a grounding part 150, and the grounding part 150 is electrically connected to the grounding end of the plug module; the grounding element is also electrically connected to a grounding rail 160 (which may also be referred to as a rail directly) to achieve physical grounding of the rail.

As shown in fig. 3 and 4, the surge protection device further includes a ground rail 160 connected to the bottom of the base, and the ground rail 160 is configured as a ground terminal of the surge protection device. The ground rail 160 is electrically connected to the ground conductive member 150. The surge protection device comprises a plurality of plug modules, and each plug module is respectively arranged on a corresponding base; and the guide rail is connected with the plurality of bases.

Finally, it should be noted that the above description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model in any way. Any person skilled in the art can make many possible variations and simple substitutions to the technical solution of the present utility model by using the methods and technical matters disclosed above without departing from the scope of the technical solution of the present utility model, and these all fall into the scope of protection of the technical solution of the present utility model.

Claims

1. A surge protection device, comprising:

2. The surge protection device of claim 1 wherein the conductive circuit comprises a first connection pad that receives an input signal, a second connection pad that transmits an output signal, and a conductive connection pad disposed between the first connection pad and the second connection pad; and the other end of the first connecting sheet and the other end of the second connecting sheet are respectively abutted with the elastic first contact part and the elastic second contact part of the conductive connecting sheet.

3. The surge protection device of claim 2, wherein at least one of the other end of the first connecting piece and the first contact portion of the conductive connecting piece is provided with an elastic end portion; at least one of the other end of the second connecting sheet and the second contact part of the conductive connecting sheet is provided with an elastic end part; and the conductive member where the elastic end portion is located constitutes the elastic conductive member.

4. A surge protection device according to claim 3, wherein said resilient end comprises a curved conductive sheet.

5. The surge protection device of claim 1, further comprising: and the guide rail is connected to the bottom of the base and is arranged as a grounding end of the surge protection device.

6. The surge protection device of claim 5, wherein the surge protection device comprises a plurality of plug modules, each plug module being mounted on a corresponding base; and the guide rail is connected with a plurality of the bases.

7. The surge protection device of claim 5 wherein the base includes a ground-directing feature, the ground-directing feature being electrically connected to a ground terminal of the plug-in module; the grounding part is also electrically connected to the guide rail to realize physical grounding of the guide rail.

8. The surge protection device according to any one of claims 1-7, wherein the rack corresponding to the plug module is capable of placing at least two PCB assemblies, each PCB assembly being provided with a two-way input/output protection circuit therein, and accordingly realizing at least four-way input/output protection.

9. The surge protection device according to any one of claims 1-7, wherein the conducting branch in the base comprises two sets of plugging sheets and a circuit board assembly, and when the plugging module is not plugged into the base, the circuit between the input terminal and the output terminal is conducted through self elasticity of at least one of the two sets of plugging sheets and the circuit board assembly; when the plug module is inserted into the base, a circuit between the inserting piece and the circuit board assembly is connected with a surge protection element in the plug module in series.