CN221305505U - Mechanical tripping surge protector - Google Patents
Mechanical tripping surge protector Download PDFInfo
- Publication number
- CN221305505U CN221305505U CN202322980259.4U CN202322980259U CN221305505U CN 221305505 U CN221305505 U CN 221305505U CN 202322980259 U CN202322980259 U CN 202322980259U CN 221305505 U CN221305505 U CN 221305505U
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- China
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- sliding block
- surge protector
- gas discharge
- discharge tube
- piezoresistors
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- 230000001012 protector Effects 0.000 title claims abstract description 30
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 abstract description 9
- 238000010891 electric arc Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of surge protectors, in particular to a mechanical tripping surge protector which comprises a sliding block, two piezoresistors respectively arranged on two opposite sides of the sliding block, a gas discharge tube and an elastic element which are arranged on the sliding block, and a tripping mechanism is formed by the mutual position, connection and matching relation, so that the characteristics that the sliding block is separated and the current of a three-phase circuit is cut off can be realized. After the temperature sensing body is heated and melted, the sliding block simultaneously isolates the current between the two piezoresistors and between each piezoresistor and the gas discharge tube under the action of the elastic element, so that the arc discharge hazard generated by breaking the current under high voltage is prevented, and the protection circuit is realized.
Description
Technical Field
The utility model relates to the technical field of surge protectors, in particular to a mechanical tripping surge protector.
Background
The surge protector (Surge protection Device) is an indispensable device in lightning protection of electronic equipment, and has been often called a "lightning arrester" or an "overvoltage protector" in the past. The surge protector is used for limiting the transient overvoltage which is led into a power line and a signal transmission line to a voltage range which can be born by equipment or a system, or discharging strong lightning current into the ground to protect the protected equipment or the system from being damaged by impact.
Under the condition of serial-parallel connection of a plurality of protection components in the current industry, a plurality of tripping mechanisms are required to be correspondingly configured, and when instantaneous overvoltage occurs, the tripping mechanism trips to protect a circuit. However, the use of multiple trip mechanisms can lead to substantial increases in product cost and reduced trip reliability of the product.
Disclosure of utility model
The technical problems to be solved by the utility model are as follows: a mechanical tripping surge protector is provided, and the simultaneous cutting-off of three-phase circuit current can be realized by using only one tripping mechanism.
In order to solve the technical problems, the utility model adopts the following technical scheme:
A mechanical tripping surge protector comprises a sliding block, two piezoresistors respectively arranged on two opposite sides of the sliding block, a gas discharge tube arranged on the sliding block, PE pins and an elastic element;
one electrode pin of the two piezoresistors is fixed and electrically connected with one electrode pin of the gas discharge tube through the temperature sensing body respectively, the other electrode pin of the gas discharge tube is electrically connected with the PE pin, the other electrode pin of the two piezoresistors is respectively used as an L-pole input end and an N-pole input end of the circuit, the elastic element acts on the sliding block, and when the temperature sensing body is melted and falls off, the elastic element drives the sliding block to move so as to break the electrical connection between the two piezoresistors and the gas discharge tube.
Further, the other electrode pin of the gas discharge tube is electrically connected with the PE pin through a copper braided wire.
Further, the voltage-sensitive resistor is characterized by further comprising a frame and a shell with one end being opened, wherein the sliding block is arranged in the frame in a penetrating way and is abutted against the frame, the frame is fixedly connected with the side wall of the opening end of the shell, the elastic element is in a compressed state, one end of the elastic element is abutted against the sliding block, and the other end of the elastic element is abutted against the inner side face opposite to the opening end of the shell.
Furthermore, a clamping groove is formed in the side wall of the opening end of the shell, and a clamping hook matched with the clamping groove is arranged at the position of the frame corresponding to the clamping groove.
Further, the elastic element is a spring assembly, the spring assembly comprises two compression springs, strip-shaped grooves are formed in two opposite side walls of the sliding block, and channels for accommodating the compression springs are formed by the strip-shaped grooves and inner side walls corresponding to the shell.
Further, one electrode pin of the two piezoresistors is arranged on one side of one electrode pin of the gas discharge tube, and the other electrode pin of the two piezoresistors and the PE pin are both arranged on one side of the other electrode pin of the gas discharge tube.
Further, the elastic element is a spring assembly, the spring assembly comprises two extension springs, strip-shaped grooves are formed in two opposite side walls of the sliding block, and the strip-shaped grooves and inner side walls corresponding to the shell jointly form a channel for accommodating the extension springs.
Further, the elastic element is a memory alloy.
Further, the temperature sensing body is a low-melting-point alloy.
Further, the temperature sensing body is an organic temperature sensing body.
The utility model has the beneficial effects that:
The utility model provides a mechanical tripping surge protector which comprises a sliding block, two piezoresistors respectively arranged on two opposite sides of the sliding block, a gas discharge tube and an elastic element which are arranged on the sliding block, wherein a tripping mechanism is formed by the mutual position and connection matching relation, and the characteristics that one sliding block is separated and three-phase circuit current is cut off can be realized. After the temperature sensing body is heated and melted, the sliding block simultaneously isolates the current between the two piezoresistors and between each piezoresistor and the gas discharge tube under the action of the elastic element, so that the arc discharge hazard generated by breaking the current under high voltage is prevented, and the protection circuit is realized.
Drawings
Fig. 1 is a schematic diagram of a mechanical trip surge protector according to the present utility model before trip;
FIG. 2 is a schematic diagram of a mechanical trip surge protector according to the present utility model after trip;
FIG. 3 is a schematic diagram of an assembled structure of a mechanical trip surge protector of the present utility model;
FIG. 4 is a bottom view of a mechanical trip surge protector of the present utility model;
Description of the reference numerals:
1. A slide block; 11. a strip-shaped groove; 2. a piezoresistor; 21. an electrode pin; 22. another electrode pin; 3. a gas discharge tube; 4. PE pins; 5. a frame; 51. a clamping hook; 6. a housing; 61. a clamping groove; 7. copper braided wire; 8. compressing the spring.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present utility model in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to fig. 1-4, the mechanical tripping surge protector provided by the utility model comprises a sliding block, two piezoresistors respectively arranged on two opposite sides of the sliding block, a gas discharge tube arranged on the sliding block, a PE pin and an elastic element;
one electrode pin of the two piezoresistors is fixed and electrically connected with one electrode pin of the gas discharge tube through the temperature sensing body respectively, the other electrode pin of the gas discharge tube is electrically connected with the PE pin, the other electrode pin of the two piezoresistors is respectively used as an L-pole input end and an N-pole input end of the circuit, the elastic element acts on the sliding block, and when the temperature sensing body is melted and falls off, the elastic element drives the sliding block to move so as to break the electrical connection between the two piezoresistors and the gas discharge tube.
From the above description, the beneficial effects of the utility model are as follows:
The utility model provides a mechanical tripping surge protector which comprises a sliding block, two piezoresistors respectively arranged on two opposite sides of the sliding block, a gas discharge tube and an elastic element which are arranged on the sliding block, wherein a tripping mechanism is formed by the mutual position and connection matching relation, and the characteristics that one sliding block is separated and three-phase circuit current is cut off can be realized. After the temperature sensing body is heated and melted, the sliding block simultaneously isolates the current between the two piezoresistors and between each piezoresistor and the gas discharge tube under the action of the elastic element, so that the arc discharge hazard generated by breaking the current under high voltage is prevented, and the protection circuit is realized.
Further, the other electrode pin of the gas discharge tube is electrically connected with the PE pin through a copper braided wire.
According to the above description, through the structural design, the other electrode pin of the gas discharge tube is electrically connected with the PE pin, and the copper braided wire has certain flexibility, so that certain bending degree can be met, and the assembly difficulty is greatly reduced.
Further, the voltage-sensitive resistor is characterized by further comprising a frame and a shell with one end being opened, wherein the sliding block is arranged in the frame in a penetrating way and is abutted against the frame, the frame is fixedly connected with the side wall of the opening end of the shell, the elastic element is in a compressed state, one end of the elastic element is abutted against the sliding block, and the other end of the elastic element is abutted against the inner side face opposite to the opening end of the shell.
As can be seen from the above description, the elastic element is given a supporting force by the housing, and when the temperature sensing body is heated and melted, the elastic element returns to the compressed state to move the slider, and the frame plays a limiting role on the piezoresistor, so that the slider and the piezoresistor can move relatively.
Furthermore, a clamping groove is formed in the side wall of the opening end of the shell, and a clamping hook matched with the clamping groove is arranged at the position of the frame corresponding to the clamping groove.
From the above description, the quick assembly is realized by the cooperation of the clamping groove and the clamping hook.
Further, the elastic element is a spring assembly, the spring assembly comprises two compression springs, strip-shaped grooves are formed in two opposite side walls of the sliding block, and channels for accommodating the compression springs are formed by the strip-shaped grooves and inner side walls corresponding to the shell.
As can be seen from the above description, by the above structural design, not only is the quick assembly of the compression spring facilitated, but the movable range of the compression spring is also limited, so that the stress is balanced.
Further, one electrode pin of the two piezoresistors is arranged on one side of one electrode pin of the gas discharge tube, and the other electrode pin of the two piezoresistors and the PE pin are both arranged on one side of the other electrode pin of the gas discharge tube.
From the above description, through the above structural design, the positions of the electrode pins are reasonably arranged, so that the occupied space can be reduced.
Further, the elastic element is a spring assembly, the spring assembly comprises two extension springs, strip-shaped grooves are formed in two opposite side walls of the sliding block, and the strip-shaped grooves and inner side walls corresponding to the shell jointly form a channel for accommodating the extension springs.
From the above description, the function of driving the slider to move can be achieved by using the tension spring as well.
Further, the elastic element is a memory alloy.
From the above description, it is known that the use of the memory alloy can make the overall product performance more stable.
Further, the temperature sensing body is a low-melting-point alloy.
From the above description, it is known that the use of low melting point alloy facilitates a quick response and cuts off the circuit.
Further, the temperature sensing body is an organic temperature sensing body, when the organic temperature sensing body is used for fixing one electrode pin of the two piezoresistors and one electrode pin of the gas discharge tube, the 3 pins are required to be electrically connected, so that the organic temperature sensing body is ensured to be melted when the temperature rise of the circuit is abnormal, and the circuit is in a connection state before the electrical connection of the 3 pins is separated.
Referring to fig. 1 to 4, a first embodiment of the present utility model is as follows:
according to the utility model, through the common tripping mechanism, when any one of the three-phase circuit of the L-N, L-PE and N-PE generates overvoltage, the through flow of the three-phase circuit is cut off at the same time, so that the safety of the whole circuit system is ensured.
The utility model provides a mechanical tripping surge protector which comprises a sliding block 1, two piezoresistors 2 respectively arranged on two opposite sides of the sliding block, a gas discharge tube 3 arranged on the sliding block, PE pins 4, an elastic element, a frame 5 and a shell 6 with one end open; the shell 6 is cuboid;
One electrode pin 21 of the two piezoresistors 2 is arranged on one side of one electrode pin of the gas discharge tube, and the other electrode pin 22 and the PE pin 4 of the two piezoresistors 2 are arranged on the other side of the other electrode pin of the gas discharge tube.
One electrode pin of the two piezoresistors is fixed and electrically connected with one electrode pin of the gas discharge tube through a temperature sensing body, wherein the temperature sensing body is a low-melting-point alloy or organic matter temperature sensing body. Because the organic matter temperature sensing body can not be welded and can not conduct electricity and only plays a role of fixing pins, the organic matter temperature sensing body can be designed into a ring shape and surrounds one electrode pin of the two piezoresistors and one electrode pin of the gas discharge tube, so that the three electrode pins are fixed together and mutually abutted to realize electric connection. Of course, other configurations are possible, as long as the three electrode pins are secured together and electrically connected to one another.
The other electrode pin of the gas discharge tube 3 is electrically connected with the PE pin 4 through a copper braided wire 7; when any section of the L-N, L-PE and N-PE three-phase circuit generates an overvoltage loop, the piezoresistor or the gas discharge tube generates heat excessively, and the temperature sensing body for fixing the electrode pin is melted;
The other electrode pin of the two piezoresistors is respectively used as an L electrode input end and an N electrode input end of the circuit, the elastic element acts on the sliding block, and when the temperature sensing body is melted and falls off, the elastic element drives the sliding block to move so as to disconnect the electrical connection between the two piezoresistors and the gas discharge tube. The elastic element is a memory alloy.
The slider 1 is arranged in the frame 5 in a penetrating way, the piezoresistor 2 is abutted with the frame 5, the frame 5 is fixedly connected with the side wall where the opening end of the shell 6 is located, the elastic element is in a compressed state, one end of the elastic element is abutted with the slider, and the other end of the elastic element is abutted with the inner side surface opposite to the opening end of the shell. Specifically, the elastic element is a spring assembly, the spring assembly comprises two compression springs 8 or extension springs, strip-shaped grooves 11 are formed in two opposite side walls of the sliding block 1, and the strip-shaped grooves 11 and inner side walls corresponding to the shell form a channel for accommodating the compression springs or the extension springs together.
Of course, the mode of pulling and twisting the torsion spring to separate from the isolating circuit can be adopted to replace the mode.
The side wall of the opening end of the shell 6 is provided with two clamping grooves 61, the two clamping grooves correspond to the side wall of the two short sides of the rectangle respectively, and the clamping hooks 51 matched with the clamping grooves are arranged at positions of the frame 5 corresponding to the clamping grooves. The hook 51 and the slot 61 may have a conventional structure.
In summary, the mechanical tripping surge protector provided by the utility model comprises a sliding block, two piezoresistors respectively arranged on two opposite sides of the sliding block, a gas discharge tube and an elastic element which are arranged on the sliding block, and a tripping mechanism is formed by the mutual position, connection and matching relation, so that the characteristics that one sliding block is separated and three-phase circuit current is cut off can be realized. After the temperature sensing body is heated and melted, the sliding block simultaneously isolates the current between the two piezoresistors and between each piezoresistor and the gas discharge tube under the action of the elastic element, so that the arc discharge hazard generated by breaking the current under high voltage is prevented, and the protection circuit is realized.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent changes made by the specification and drawings of the present utility model, or direct or indirect application in the relevant art, are included in the scope of the present utility model.
Claims (10)
1. The mechanical tripping surge protector is characterized by comprising a sliding block, two piezoresistors respectively arranged on two opposite sides of the sliding block, a gas discharge tube arranged on the sliding block, a PE pin and an elastic element;
One electrode pin of the two piezoresistors is respectively fixed and electrically connected with one electrode pin of the gas discharge tube through the temperature sensing body, the other electrode pin of the gas discharge tube is electrically connected with the PE pin, and the other electrode pin of the two piezoresistors is respectively used as an L electrode input end and an N electrode input end of the circuit; the elastic element acts on the sliding block and drives the sliding block to move when the temperature sensing body is melted and falls off so as to break the electrical connection between the two piezoresistors and the gas discharge tube;
The voltage-sensitive resistor is characterized by further comprising a frame and a shell with one end being open, wherein the sliding block is arranged in the frame in a penetrating way and is abutted against the frame, the frame is fixedly connected with the side wall where the open end of the shell is located, one end of the elastic element is abutted against the sliding block, and the other end of the elastic element is abutted against the inner side face opposite to the open end of the shell.
2. The mechanical trip surge protector of claim 1, wherein the other electrode pin of the gas discharge tube is electrically connected to the PE pin by a copper braid.
3. The mechanical trip surge protector of claim 1, wherein said resilient member is in a compressed state.
4. The mechanical trip surge protector according to claim 1, wherein a clamping groove is formed in a side wall where the opening end of the housing is located, and a clamping hook matched with the clamping groove is arranged at a position corresponding to the clamping groove of the frame.
5. The mechanical trip surge protector of claim 1, wherein the resilient member is a spring assembly comprising two compression springs, and wherein the opposite side walls of the slider are provided with bar-shaped slots that cooperate with corresponding inner side walls of the housing to form channels for receiving the compression springs.
6. The mechanical trip surge protector of claim 1, wherein one electrode pin of the two piezoresistors is disposed on a side of one electrode pin of the gas discharge tube, and the other electrode pin of the two piezoresistors and the PE pin are disposed on a side of the other electrode pin of the gas discharge tube.
7. The mechanical trip surge protector of claim 1, wherein the elastic element is a spring assembly comprising two tension springs, and wherein the opposite side walls of the slider are provided with bar-shaped slots that cooperate with the corresponding inner side walls of the housing to form channels for receiving the tension springs.
8. The mechanical trip surge protector of claim 1, wherein said resilient element is a memory alloy.
9. The mechanical trip surge protector of claim 1, wherein said temperature sensing body is a low melting point alloy.
10. The mechanical trip surge protector of claim 1, wherein the temperature sensing body is an organic temperature sensing body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322980259.4U CN221305505U (en) | 2023-11-03 | 2023-11-03 | Mechanical tripping surge protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322980259.4U CN221305505U (en) | 2023-11-03 | 2023-11-03 | Mechanical tripping surge protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221305505U true CN221305505U (en) | 2024-07-09 |
Family
ID=91737334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322980259.4U Active CN221305505U (en) | 2023-11-03 | 2023-11-03 | Mechanical tripping surge protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221305505U (en) |
-
2023
- 2023-11-03 CN CN202322980259.4U patent/CN221305505U/en active Active
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