CN216252173U

CN216252173U - Surge protector dropout structure

Info

Publication number: CN216252173U
Application number: CN202122911280.XU
Authority: CN
Inventors: 郑铁如; 徐旭阳; 郑铁颖; 韩丹丹; 林金鹏
Original assignee: Zhejiang Tyco Tianwei Electric Co ltd
Current assignee: Zhejiang Tyco Tianwei Electric Co ltd
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2022-04-08
Anticipated expiration: 2031-11-25

Abstract

The utility model discloses a surge protector tripping structure, belonging to the technical field of lightning protection equipment, comprising a shell, wherein one end of the shell is movably connected with a display window, a module frame is arranged in the shell, a piezoresistor is accommodated on the module frame, electrodes are arranged on two sides of the piezoresistor, an ejector rod is arranged in a safety piece, the ejector rod is connected with the module frame in a sliding way, an indicating piece is also rotatably arranged on the module frame, the lower end of the indicating piece is abutted against the ejector rod, the upper end of the indicating piece is arranged on the lower part of the display window, when the piezoresistor generates heat under the impact of large current, the heat is conducted to the safety piece and melts soldering tin, the limitation on the ejector rod is removed, the ejector rod slides upwards along sliding grooves on two sides of the vertical part of the module frame, the indicating piece is ejected, when the indicating piece rotates obliquely, the top end of the indicating piece is ejected to the display window, thereby being convenient to find, further embodying under the condition of continuous large current, the tripping structure has the advantages of stable tripping and high safety.

Description

Surge protector dropout structure

Technical Field

The utility model belongs to the technical field of lightning protection equipment, and particularly relates to a surge protector tripping structure.

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.

The existing surge protector has the following defects in use.

Because the tripping structure of the existing surge protector is usually suitable for small current, namely, the voltage dependent resistor generates heat to melt soldering tin, and tripping is realized under the action of the spring and the tripping rod. When the current continuity is overlarge, the heat of the piezoresistor is increased, and the tripping structure easily enables the tripping effect to be easily reduced greatly, so that the hidden danger of fire hazard is caused. Therefore, it is necessary to provide a tripping structure of the surge protector.

Disclosure of Invention

Aiming at the problem that the existing surge protector tripping structure is not suitable for large current, the utility model provides the surge protector tripping structure, which realizes stable tripping under large current and has high safety performance through the matching of the ejector rod, the indicating piece and the module frame.

In order to solve the above problems, the present invention adopts the following technical solutions.

The utility model provides a surge protector dropout structure, includes the casing, casing one end swing joint has the display window, is equipped with the module frame in the casing, the last piezo-resistor that has held of module frame, this piezo-resistor both sides are equipped with the electrode, and this electrode passes through the rupture disc and fixes piezo-resistor to the module frame, be equipped with the ejector pin in the rupture disc, this ejector pin and module frame sliding connection, it is provided with the indicator still to rotate on the module frame, and this indicator lower extreme and ejector pin butt, the upper end sets up in the display window lower part.

Preferably, one end of the module frame extends upwards relatively to form a vertical part for assembling the ejector rod, sliding grooves for realizing sliding connection are formed in two sides of the vertical part, a second fixing hole matched with the indicating piece is formed in one side of each sliding groove, and a guide column is arranged at one end of the vertical part.

Preferably, the module frame is provided with a first fixing hole for fixing the pin of the piezoresistor, and two sides of the module frame are provided with empty slots, and the pins are clamped in the empty slots.

Preferably, the safety plate, the electrode and the pin are fixed through low-temperature soldering.

Preferably, the upper end of the ejector rod is clamped into a sliding groove of the module frame, the lower end of the ejector rod is abutted to the module frame main body to be fixed, a cavity is formed in one side of the ejector rod and is arranged on the outer side of the guide post, a jacking portion is arranged on the other side of the ejector rod in an extending mode, and the jacking portion is arranged at the lower end of the safety piece.

Preferably, the lower end of the indicator extends obliquely towards one side to form a swing arm abutted with the mandril, and the swing arm is provided with a mounting column matched with the second fixing hole.

Advantageous effects

Compared with the prior art, the utility model has the beneficial effects that:

when the piezoresistor generates heat under the impact of large current, heat is conducted to the safety sheet and the soldering tin is melted, the limitation on the ejector rod is removed, the ejector rod slides upwards along the sliding grooves on two sides of the vertical part of the module frame, the indicating piece is ejected, and when the indicating piece rotates obliquely, the top end of the indicating piece is ejected to the display window, so that the piezoresistor is found conveniently, the advantage of stable tripping of the tripping structure under the condition of continuous large current is further embodied, and the safety is high.

Drawings

Fig. 1 is a schematic diagram of an overall structure of a tripping structure of a surge protector.

Fig. 2 is a schematic diagram of an internal structure of a tripping structure of a surge protector.

Fig. 3 is a schematic diagram of an internal structure of a tripping structure of a surge protector.

Fig. 4 is a schematic diagram of a module frame structure of a trip structure of a surge protector.

Fig. 5 is a schematic diagram of a push rod structure of a surge protector tripping structure.

Fig. 6 is a schematic diagram of a push rod structure of a surge protector tripping structure.

Fig. 7 is a schematic structural view of an indicator of a trip structure of a surge protector.

The corresponding relationship between the reference numbers of the figures and the names of the components in the figures is as follows:

1. a housing; 2. a display window; 3. a voltage dependent resistor; 4. an electrode; 5. a module frame; 5.1, a first fixing hole; 5.2, a second fixing hole; 5.3, a guide post; 5.4, a sliding chute; 6. an indicator; 6.1, mounting a column; 7. a top rod; 7.1, a jacking part; 7.2, a cavity; 8. a safety disc; 9. and (7) a pin.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-7, which are schematic structural diagrams of a trip structure of a surge protector according to a preferred embodiment of the present invention, in this embodiment, the trip structure includes a housing 1, one end of the housing 1 is movably connected to a display window 2, a module frame 5 is disposed in the housing 1, a varistor 3 is accommodated in the module frame 5, electrodes 4 are disposed on two sides of the varistor 3, the varistor 3 is fixed to the module frame 5 by the electrodes 4 through a safety sheet 8, a plunger 7 is disposed in the safety sheet 8, the plunger 7 is slidably connected to the module frame 5, an indicator 6 is further rotatably disposed on the module frame 5, a lower end of the indicator 6 abuts against the plunger 7, an upper end of the indicator 6 is disposed at a lower portion of the display window 2, the display window 2 is rotatably assembled to a side surface of the housing 1 through cylinders at two ends, bumps are disposed at two sides of the module frame 5 and are fastened to the housing 1 through bumps, the varistor 3 is disposed in the middle of the module frame 5, be provided with three electrode 4 on the piezo-resistor 3, an electrode 4 is fixed through rupture disc 8, and an electrode 4 joint is fixed to module frame 5 realization, and another electrode 4 realizes fixedly with module frame 5.

In this embodiment, 5 one end of module frame extends upwards relatively and forms the vertical portion that supplies the assembly of ejector pin 7, and this vertical portion both sides are opened has the spout 5.4 that is used for realizing sliding connection, spout 5.4 one side is equipped with the second fixed orifices 5.2 of assembling with indicator 6, vertical portion one end is equipped with guide post 5.3, and vertical portion upper end both sides are opened has spout 5.4, and this spout 5.4 is close to piezo-resistor 3 this side and opens and have second fixed orifices 5.2.

In this embodiment, the inward slot of the lower end of the module frame 5 is provided with a first fixing hole 5.1 for fixing the pin of the varistor 3, and two sides of the module frame 5 are provided with empty slots, the inside of each empty slot is clamped with the pin of the varistor 3, the shape of each slot is consistent with that of the pin of the varistor 3, the side surface of the module frame 5 extends inwards and is used for fixing the pin of the varistor 3, the empty slots are arranged at two sides of the module frame 5 and penetrate through the module frame 5, and the inside of each empty slot is provided with a clamping block for fixing the pin 9 of the surge protector.

In this embodiment, the safety plate 8, the electrode 4 and the pin 9 are connected and fixed by low-temperature soldering tin, and at a high temperature, the soldering tin melts, so that the safety plate 8, the electrode 4 and the pin 9 are separated from a fixed state, and the tripping is facilitated.

In this embodiment, 7 upper ends of the ejector rods are clamped in the sliding grooves 5.4 of the module frame 5, the lower ends of the ejector rods abut against the main body of the module frame 5 to realize fixation, one side of each ejector rod 7 is provided with a cavity 7.2, the cavity 7.2 is arranged on the outer side of the guide column 5.3, the other side of each ejector rod 7 extends to be provided with a jacking portion 7.1, the jacking portion 7.1 is arranged at the lower end of each safety plate 8, when the safety plates 8, the electrodes 4 and soldering tin between the pins 9 are melted, the ejector rods 7 move upwards, and the jacking portions 7.1 jack the safety plates 8 upwards along the sliding grooves 5.4 and jack the indicating pieces 6 to move.

In this embodiment, the lower end of the indicator 6 extends obliquely towards one side to form a swing arm abutting against the top rod 7, the swing arm is provided with a mounting column 6.1 matched with the second fixing hole 5.2, the top rod 7 moves upwards along the slope of the swing arm and pushes against the junction of the inclined surface and the straight surface of the swing arm, at this time, the upper end of the indicator 6 rotates anticlockwise, and the protruding part pushes against the display window 2.

While the utility model has been described in further detail in connection with specific embodiments thereof, it will be understood that the utility model is not limited thereto, and that various other modifications and substitutions may be made by those skilled in the art without departing from the spirit of the utility model, which should be considered to be within the scope of the utility model as defined by the appended claims.

Claims

1. A tripping structure of a surge protector, which comprises a shell,

the method is characterized in that:

including casing (1), casing (1) one end swing joint has display window (2), is equipped with module frame (5) in casing (1), holding on module frame (5) and having piezo-resistor (3), this piezo-resistor (3) both sides are equipped with electrode (4), and this electrode (4) are fixed piezo-resistor (3) to module frame (5) through rupture disc (8), be equipped with ejector pin (7) in rupture disc (8), this ejector pin (7) and module frame (5) sliding connection, it is provided with indicator (6) still to rotate on module frame (5), and this indicator (6) lower extreme and ejector pin (7) butt, the upper end sets up in display window (2) lower part.

2. The surge protector trip structure of claim 1, wherein: one end of the module frame (5) extends upwards relatively to form a vertical part for assembling the ejector rod (7), sliding grooves (5.4) used for achieving sliding connection are formed in two sides of the vertical part, a second fixing hole (5.2) assembled with the indicating piece (6) is formed in one side of each sliding groove (5.4), and a guide column (5.3) is arranged at one end of the vertical part.

3. The surge protector trip structure of claim 2, wherein: the lower end of the module frame (5) is provided with a first fixing hole (5.1) for fixing a pin of the piezoresistor (3) by inwards slotting, and both sides of the module frame (5) are provided with empty slots in which pins (9) are clamped.

4. The surge protector trip structure of claim 1, wherein: the safety disc (8), the electrode (4) and the pin (9) are connected and fixed through low-temperature soldering tin.

5. The surge protector trip structure of claim 1, wherein: ejector pin (7) upper end joint is to module frame (5) in spout (5.4), and the lower extreme supports to module frame (5) main part and realizes fixing, and open ejector pin (7) one side has cavity (7.2), and this cavity (7.2) set up in guide post (5.3) outside, and ejector pin (7) opposite side extends and is provided with jack-up portion (7.1), and this jack-up portion (7.1) sets up in insurance policy (8) lower extreme.

6. The surge protector trip structure of claim 1, wherein: the lower end of the indicating piece (6) extends towards one side obliquely to form a swing arm abutted against the mandril (7), and the swing arm is provided with a mounting column (6.1) assembled with the second fixing hole (5.2).