CN212412758U

CN212412758U - Surge protector dropout structure and surge protector

Info

Publication number: CN212412758U
Application number: CN202021552648.7U
Authority: CN
Inventors: 杜永亮
Original assignee: Jiangsu Guardwell Electric Co ltd
Current assignee: Jiangsu Guardwell Electric Co ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-01-26
Anticipated expiration: 2030-07-31

Abstract

The utility model discloses a surge protector dropout structure and surge protector relates to circuit protection technical field, when generating heat to monolithic piezo-resistor, can lead to soldering tin to melt inadequately because of heat conduction is inhomogeneous, and the unable normal slip of slip, tripping bar can not normally move, has the hidden danger that arouses the conflagration, and the dropout structure part is more, and the structure is complicated, and the installation is time-consuming, and the cost is higher relatively, and the relatively poor problem of stability proposes following scheme now, including the drain pan, the inside of drain pan is equipped with the chamber wall, the left side on chamber wall is equipped with piezo-resistor, the last piezo-resistor electrode that is equipped with of piezo-resistor, piezo-resistor's top is equipped with first electrical connection pin, one side of piezo-resistor is equipped with and. The utility model discloses can reduce the surge protector height, reduce spare part quantity, reduce the installation degree of difficulty, can realize dropout, status indication, remote signalling trigger function simultaneously, improve device's practicality, be fit for carrying out marketing.

Description

Surge protector dropout structure and surge protector

Technical Field

The utility model relates to a circuit protection technical field especially relates to a surge protector dropout structure and surge protector.

Background

The surge protector is suitable for power protection and signal protection of systems such as industry, buildings, civil aviation, finance, securities, data centers, telecommunication, machine rooms, ports, rails and the like, and protects equipment from surge pulses and instantaneous overvoltage caused by external factors (lightning stroke, electromagnetic radiation interference and the like) or system internal factors (starting and stopping of system switching effect, induction and capacitive loads and the like). Under normal conditions, the inside piezo-resistor of surge protector is in the high resistance, is equivalent to the open circuit state, and when the thunderbolt appeared, under the high voltage effect, the piezo-resistor resistance reduces rapidly, and similar short circuit state passes through piezo-resistor to ground conduction lightning current, eliminates the overvoltage because of the thunderbolt causes. Because under long-term work, piezo-resistor itself can produce the degradation, and piezo-resistor leads to the fact abnormal condition to earth conduction current because of the degradation, and the heat of piezo-resistor itself increases fast, for avoiding the conflagration emergence that causes because of the piezo-resistor heat accumulation, sets up the structure that breaks away from in surge protector usually, when the temperature risees, breaks off piezo-resistor from the circuit through breaking away from the structure. A comparison between a tripping mechanism for a surge protector and the surge protector disclosed in chinese patent 201110346844.8 is proposed, however, the following problems exist in the structure of the surge protector: slider, trip bar, bias spring are located the support openly, have increased the height of product, when monolithic piezo-resistor generates heat if appearing, because of the inhomogeneous unable fully melting that can lead to soldering tin of heat conduction, the unable normal slip of slip, the trip bar can not normally move, has the hidden danger that arouses the conflagration, and the dropout structure part is more, and the structure is complicated, and the installation is time-consuming, and the cost is higher relatively, and stability is relatively poor, and we provide a surge protector dropout structure and surge protector for this reason.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pair of surge protector dropout structure and surge protector has solved monolithic piezo-resistor and when generating heat, can lead to soldering tin to melt inadequately fully because of the heat conduction is inhomogeneous, slides unable normal slip, and the trip bar can not normally move, has the hidden danger that arouses the conflagration, and the dropout structure part is more, and the structure is complicated, and the installation is time-consuming, and the cost is higher relatively, the relatively poor problem of stability.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a surge protector dropout structure, includes the drain pan, the inside of drain pan is equipped with the chamber wall, the left side on chamber wall is equipped with piezo-resistor, the last piezo-resistor electrode that is equipped with of piezo-resistor, piezo-resistor's top is equipped with first electrical connection pin, one side of piezo-resistor is equipped with breaks away from the working of plastics, one side that breaks away from the working of plastics is equipped with the status indication sign, break away from the working of plastics and keep away from the remote signalling indicating mechanism of one side fixedly connected with of status indication sign, one side that breaks away from the working of plastics and is equipped with the slip reference column, the bottom that breaks away from the working of plastics is equipped with the spring, one side movable sleeve that breaks away from the working of plastics and keeps away from piezo-resistor is equipped with and.

Preferably, the separated plastic part is separated in a vertical sliding mode by using a cavity wall in the bottom shell as a sliding rail of the separated plastic part, the top of the separated plastic part close to the cavity wall is in a normal state, and the bottom of the separated plastic part close to the cavity wall is in a fault state.

Preferably, when the separation plastic part is located in a normal state, the state indication mark is located in a green area, the remote signaling indication mechanism is located in a normal position, and the separation plastic part and the piezoresistor electrode are firmly connected through low-temperature soldering tin.

Preferably, when the separation plastic part is in a fault state, the state indication mark is in a red area, the remote signaling indication mechanism is in a fault position, and the separation metal part is completely separated from the piezoresistor electrode.

Preferably, when the piezoresistor fails, the temperature rises, the low-temperature soldering tin melts due to high temperature, and the separation metal piece is separated from the piezoresistor electrode.

A surge protector comprising a surge protector trip structure as hereinbefore described.

Compared with the prior art, the beneficial effects of the utility model are that: can reduce surge protector height, reduce spare part quantity, reduce the installation degree of difficulty, can realize dropout, state indication, remote signaling trigger function simultaneously, improve the practicality of device, be fit for carrying out marketing.

Drawings

Fig. 1 is a schematic view of a tripping structure of a surge protector and a three-dimensional structure of the surge protector provided by the present invention;

fig. 2 is a schematic view of a tripping structure of a surge protector and an explosion structure of the surge protector provided by the present invention;

fig. 3 is a schematic structural view of a tripping structure of the surge protector and a broken plastic part of the surge protector provided by the utility model;

fig. 4 is a schematic diagram of a tripping structure of a surge protector and a normal position structure of the surge protector provided by the utility model;

fig. 5 is the utility model provides a surge protector dropout structure and surge protector's fault location schematic diagram.

In the figure: the device comprises a bottom shell 1, a cavity wall 2, a first electrical connection pin 3, a piezoresistor 4, a piezoresistor electrode 5, a state indication mark 6, a plastic part 7, a remote signaling indication mechanism 8, a sliding positioning column 9, a spring 10, a metal part 11, a second electrical connection pin 12 and an upper cover 13.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-5, a surge protector tripping structure comprises a bottom shell 1, a cavity wall 2 is arranged inside the bottom shell 1, a piezoresistor 4 is arranged on the left side of the cavity wall 2, a piezoresistor electrode 5 is arranged on the piezoresistor 4, a first electrical connection pin 3 is arranged on the top of the piezoresistor 4, a separation plastic member 7 is arranged on one side of the piezoresistor 4, a state indication mark 6 is arranged on one side of the separation plastic member 7, a telecommand indication mechanism 8 is fixedly connected to one side of the separation plastic member 7 far away from the state indication mark 6, a sliding positioning column 9 is arranged on one side of the separation plastic member 7 close to the piezoresistor 4, a spring 10 is arranged at the bottom of the separation plastic member 7, a separation metal member 11 is movably sleeved on one side of the separation plastic member 7 far away from the piezoresistor 4, a, the front surface of the bottom case 1 is provided with an upper cover 13.

In this embodiment, the separation plastic part 7 is separated by sliding up and down by using the cavity wall 2 inside the bottom shell 1 as a sliding rail for separating the plastic part 7, the top of the separation plastic part 7 close to the cavity wall 2 is in a normal state, and the bottom of the separation plastic part 7 close to the cavity wall 2 is in a fault state.

In this embodiment, when the separation plastic part 7 is in a normal state, the state indication mark 6 is in a green area, the remote signaling indication mechanism 8 is in a normal position, and the separation plastic part 11 is firmly connected with the varistor electrode 5 by low-temperature soldering tin.

In this embodiment, when the separation plastic part 7 is in the fault state, the state indication mark 6 is in the red region, the remote signaling indication mechanism 8 is in the fault position, and the separation metal part 11 is completely separated from the varistor electrode 5.

In this embodiment, when the varistor 4 fails, the temperature rises, and the high temperature melts the low-temperature solder, so that the release metal fitting 11 is released from the varistor electrode 5.

According to the working principle, firstly, the first electrical connection pin 3 and the piezoresistor electrode 5 are in an integrated connection structure and are welded on one surface of the piezoresistor 4 through soldering tin, the piezoresistor electrode 5 is welded on the other surface of the piezoresistor 4 through soldering tin, and pins of two electrode plates are on the same side.

As shown in fig. 2 and 4, the welded varistor 4 is placed inside the bottom case 1, the separation plastic part 7 is placed on the inner chamber wall 2, and the separation metal part 11 is fixed on the separation plastic part 7 by a buckle on the separation plastic part 7.

One end of the separation metal piece 11 is welded with the voltage dependent resistor electrode 5 by using low-voltage soldering tin, one end of the spring 10 is fixed in a spring mounting hole on the separation plastic piece 7, the other end of the spring 10 is fixed on a spring fixing column on the bottom shell 1, the second electrical connection pin 12 is connected with the separation metal piece 11 by using a copper flexible wire, and the state of separating from the plastic piece 7 after the installation is finished is shown in figure 4.

As shown in fig. 5, the separation plastic part 7 is provided with 3 sliding positioning columns 9 according to the triangular stability principle, and the separation part can only slide up and down along the inner cavity wall 2 of the bottom shell 1 due to the positioning column limiting effect, so that the separation part is prevented from swinging left and right.

Break away from working of plastics 7 and be equipped with status indicator sign 6, break away from working of plastics 7 and adopt double-colored design, upper portion 5mm adopts red to apply paint with a brush, break away from 7 bodies of working of plastics and adopt green plastics to mould plastics, under the normal condition, break away from working of plastics 7 and be located normal position as figure 4, status indicator sign 6 red portion of applying paint with a brush is sheltered from by drain pan 1, only show green through opening or the transparent window of setting on drain pan 1, green is used for showing to break away from working of plastics 7 and is in.

Under normal state, break away from working of plastics 7 and be located normal position like figure 4, remote signaling indicating mechanism 8 is in normal position, can conduct the working position who breaks away from working of plastics 7 to the bottom through remote signaling indicating mechanism 8, shows that present is in normal operating condition.

When the trouble takes place, the 4 very fast rising of piezo-resistor heat, conduct the heat to low temperature soldering tin through piezo-resistor electrode 5, low temperature soldering tin melts fast under the high temperature effect, under the effort of spring 10, break away from working of plastics 7 and slide to the fault location along the inside chamber wall 2 of drain pan 1 as figure 5, on being fixed in the buckle that breaks away from on the working of plastics 7 because of breaking away from metal part 11, along with the slip that breaks away from working of plastics 7, break away from metal part 11 and slide to the fault location together with breaking away from working of plastics 7, break away from metal part 11 and throw off completely like figure 5 with piezo-resistor electrode.

In the fault state, the plastic release part 7 is located at the fault position as shown in fig. 5, the red painting part of the status indicator 6 only displays red through an opening or a transparent window arranged on the bottom case 1, and the red is used for indicating that the plastic release part 7 is in the fault state. The remote signaling indicating mechanism 6 is in a fault position, and the working position of the separated plastic part 7 can be conducted to the bottom through the remote signaling indicating mechanism 6, so that the state that the plastic part is in a fault working state at present is represented.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a surge protector dropout structure, includes drain pan (1), its characterized in that, the inside of drain pan (1) is equipped with chamber wall (2), the left side of chamber wall (2) is equipped with piezo-resistor (4), be equipped with piezo-resistor electrode (5) on piezo-resistor (4), the top of piezo-resistor (4) is equipped with first electrical connection pin (3), one side of piezo-resistor (4) is equipped with breaks away from working of plastics (7), one side that breaks away from working of plastics (7) is equipped with status indicator (6), one side fixedly connected with telesignalling indicating mechanism (8) of status indicator (6) are kept away from in working of plastics (7), one side that breaks away from working of plastics (7) and is close to piezo-resistor (4) is equipped with slip reference column (9), the bottom that breaks away from working of plastics (7) is equipped with spring (10), one side activity that breaks away from piezo-resistor (4) and is kept away ) A second electrical connection pin (12) movably sleeved on the wall of the bottom shell (1) is arranged below the piezoresistor (4), and an upper cover (13) is arranged on the front side of the bottom shell (1).

2. The surge protector tripping structure according to claim 1, wherein the separation plastic part (7) performs up-and-down sliding separation by using the cavity wall (2) inside the bottom shell (1) as a sliding rail of the separation plastic part (7), the top of the separation plastic part (7) close to the cavity wall (2) is in a normal state, and the bottom of the separation plastic part (7) close to the cavity wall (2) is in a fault state.

3. The surge protector tripping structure according to claim 2, wherein when the separation plastic part (7) is in a normal state, the state indicator (6) is in a green area, the remote signaling indicating mechanism (8) is in a normal position, and the separation metal part (11) and the voltage dependent resistor electrode (5) are firmly connected by adopting low-temperature soldering tin.

4. The surge protector tripping structure according to claim 2, wherein when the release plastic part (7) is in a fault state, the state indicator (6) is in a red area, the remote signaling mechanism (8) is in a fault position, and the release metal part (11) is completely separated from the varistor electrode (5).

5. A surge protector trip structure according to claim 3, wherein when the varistor (4) fails, the temperature rises, the high temperature causes the low temperature solder to melt, and the release metal (11) is released from the varistor electrode (5).

6. A surge protector, characterized by comprising a surge protector trip structure according to any of claims 1-5.