CN107689309A - One kind keeps away camber circuit protection module - Google Patents

Abstract

The invention discloses one kind to keep away camber circuit protection module, including inner casing, shell, preventing arc component, voltage-sensitive component, electrode lead-out pins, responding to switch component and instruction device；Described inner casing is provided with two electrode holes, two track platforms and one piece of divider wall；Described preventing arc component includes four flexible members and two separators；Described voltage-sensitive component includes more than one voltage sensitive element；Described responding to switch component includes two separation electrodes, temperature-sensitive element, first electrode and second electrode；The present invention is used for instantaneous overvoltage overcurrent in suppression circuit, when voltage-sensitive component hinder for some reason short circuit duration it is heating up when, responding to switch component promotes the action separation of preventing arc component, prevent electric arc caused by switch ejection separation from forming the short circuit overload that electrical breakdown triggers, and multiple fusing burble points are set, multiple security, it efficiently avoid disaster hidden-trouble.

Description

One kind keeps away camber circuit protection module

Technical field

The present invention relates to a kind of circuit protection device, more particularly to one kind to keep away camber circuit protection module.

Background technology

Surge Protector is suitable in electric system or communication system, to indirect thunder and lightning and direct effects of lightning or other winks When overvoltage surge protected, suitable for home dwelling, the tertiary industry and industrial circle.Surge protection has relative phase, Relatively, with respect to center line, the center line protected mode such as over the ground and combinations thereof.Surge Protector is can not in electronic equipment lightning protection A kind of device lacked, past are frequently referred to " arrester ".The effect of Surge Protector is scurrying into power line, signal transmssion line Instantaneous overvoltage is limited in the voltage range that equipment or system can bear, or powerful lightning current aerial drainage is entered into ground, protection Protected equipment or system are not hit and damaged.The type and structure of Surge Protector are different by different purposes, But it should at least include a non-linear voltage restriction element.Basic component for Surge Protector has：Discharging gap, fill Gas discharge tube, piezo-resistance, suppress diode and choking-winding etc..The releasing structure of existing a part of Surge Protector takes off Button bit put it is single, if releasing structure break down, leakage current can increase, and cause shielding failure, leakage current increase very Can extremely power supply short circuit be caused to catch fire.

If China Patent No. is that CN201510224964.9 discloses a kind of big through-flow surge protector, including base and The surge protection module being plugged on base, the surge protection module include support, overvoltage restriction element, are equipped with support First, second conductive contact, overvoltage restriction element is provided with connected first conductive contact of first electrode and forms electrical connection, excessively electric Pressure restriction element is provided with two second electrodes on its relative two outer surface；It is respectively provided with two second electrodes One dropout rotating turret, dropout rotating turret are pivotally connected on the bracket, and one is equipped between each dropout rotating turret and the support Individual elastic component, be connected on each dropout rotating turret an electric-conductor；Second conductive contact is provided with two conductive extensions；It is described Electric-conductor distinguishes one second electrode of adhesion and a conductive extension by two sides and hot melt alloy-layer；It is excellent It is extension spring to select the elastic component；It can bear larger surge current, and compact-sized, small volume, and maintainability is good.

And for example China Patent No. is a kind of surge protector disclosed in CN201510209888.4, including housing, located at shell Internal the first insulation sleeve, the aluminium flake in the first insulation sleeve, the voltage dependent resistor chip on aluminium flake, located at piezo-resistance Metal connecting terminal on chip, the second insulation sleeve in metal connecting terminal, the pad on the second insulation sleeve and Jump ring, voltage dependent resistor chip are contained in the first insulation sleeve, and the middle part of metal connecting terminal forms stage portion, and the second insulation includes Metal connecting terminal is sheathed in the first sleeve in stage portion, the second sleeve under stage portion and the first sleeve of connection and the Connection ring between two sleeves, the outside of second sleeve and the inwall of housing are leant, and first is arranged with metal connecting terminal The collar and second collar, inwall of each collar outer peripheral edge respectively with the first sleeve and second sleeve lean, and jump ring is sheathed on On two insulation sleeves and outside is arranged in housing.

This just needs the good surge protective device of a dual fail-safe, performance, to ensure the normal use of electronic equipment.

The content of the invention

It is an object of the invention in view of the above-mentioned problems, providing one kind keeps away camber circuit protection module.

To achieve the above object, the present invention is achieved by the following technical solutions.

One kind keeps away camber circuit protection module, including housing, preventing arc component, voltage-sensitive component, electrode lead-out pins, response Switch module and instruction device；Described housing includes inner casing and shell；Described inner casing is closed-in construction；Described inner casing and Shell is combined by way of lock, when inner casing is engaged with shell by way of lock, forms two closed cavities；It is described Two closed cavities be respectively the first cavity and the second cavity；Described voltage-sensitive component is placed in the second cavity；It is described Inner casing be provided with two electrode holes, two track platforms and one piece of divider wall；First cavity is divided into two by described divider wall Individual enclosed compartment；Two described enclosed compartments are respectively the first compartment and the second compartment, one of electrode hole and a rail Platform where rites are performed is in the first compartment, and another electrode hole and another track platform are in the second compartment；Described inner casing both sides are set respectively There is chute；Described preventing arc component includes four flexible members and two separators；Two described separators are respectively first Separator and the second separator；Described voltage-sensitive component includes more than one voltage sensitive element；Described response is opened Closing component includes two separation electrodes, temperature-sensitive element, first electrode and second electrode；Described separation electrode is separated by activity End, fusing insurance and electrode connecting end composition；Described movable separating end is provided with two wing arms.

Described separator interior is provided with the placed cavity of separation electrode；The bottom of separator is provided with groove；Before separator Stretching hole of the end provided with electrode connecting end；The both sides of separator are additionally provided with the spacing slideway of wing arm；The wherein side of separator is set There is spring groove, spring front of the slot is provided with instruction device, and opposite side is provided with flank；Described separator is additionally provided with anti-arc guard and preventing arc The screens groove of cover；Described separator is socketed on track platform.

Described voltage sensitive element tow sides are respectively equipped with metal electrode film；Described first electrode is located at wherein one On individual metal electrode film, described second electrode is located on another metal electrode film；Described first electrode, second electrode point Do not extended by two electrode holes from the second cavity in the first cavity；Described first electrode, second electrode are respectively equipped with one Jack；When the front end of the first described separator touches with first electrode, or the front end of the second described separator and the second electricity When pole touches, the position of described jack is corresponding with the position for stretching out hole.

The first described separator is located in the first compartment；The second described separator is located in the second compartment；Described Separator is socketed on track platform；In four described flexible members, two of which flexible member is respectively fitted over inner casing both sides In chute, two other is respectively fitted in spring groove；Described separation electrode is placed in the placed cavity of separator, movable separating end Wing arm stretch out spacing slideway, the wherein wing arm on one side is biased by one end of the flexible member in spring groove；Electrode connecting end point Do not stretched out from stretching hole, jack；Described electrode connecting end is welded with jack by temperature-sensitive element.

Described electrode lead-out pins include first electrode leading foot and second electrode leading foot；Described inner casing both sides are also set There is the through hole of first electrode leading foot and second electrode leading foot, first electrode leading foot, second electrode leading foot pass through respectively Through hole extends outside from inner housing inner, so as to form two external pins；Described first electrode leading foot by flexible conductor with The movable separating end of separation electrode in first separator forms circuit connection；Described second electrode leading foot passes through flexible conductor Circuit is formed with the movable separating end of the separation electrode in the second separator to be connected.

As the further explanation of the present invention, described temperature-sensitive element is meltable metal alloy solder or conducting polymer Thing.

As the further explanation of the present invention, described fusing insurance is a kind of metal alloy material of instant vaporization after fusing Material.

As the further explanation of the present invention, described voltage sensitive element is piezoresistor type sensing element, discharge tube Any one in formula sensing element, discharging gap formula sensing element.

As the further explanation of the present invention, described instruction device is electric instruction device or mechanical indication means；Institute The shell stated is provided with indication window.

As the further explanation of the present invention, the preferred stage clip of described flexible member, but can also design using extension spring generation Replace.

Compared with prior art, the beneficial effect that the present invention possesses：

1st, the present invention designs multiple disconnection dispersal points, can fully ensure that when device section failure, may be used also To play a protective role, security performance is high.

2nd, protection device of the invention can moment disjunction, the insulation that effect is just had been formed with when electric arc does not produce also is strong Degree, thoroughly prevents electric arc from producing.

3rd, the defencive function kept away camber circuit protection module and there is overvoltage short circuit overload moment ejection to depart from of the invention Detachment function is launched with heated temperature rise moment.

4th, separator of the invention and separation electrode are respectively provided with drive flexible member, are independent of each other, separator is provided with preventing arc Cover, keeps away arc positive effect.

Brief description of the drawings

Fig. 1 is the part assembling structure schematic diagram of the present invention；

Fig. 2 is the diagrammatic cross-section of the second electrode released state of the present invention；

Fig. 3 is the voltage-sensitive component of the present invention and the assembly structure diagram of metal electrode film；

Fig. 4 is the structural representation of the inner casing of the present invention；

Fig. 5 is the overlooking the structure diagram of the first separator of the present invention；

Fig. 6 is the structural representation of the second separator of the present invention；

Fig. 7 is the structural representation of the separation electrode of the present invention；

Fig. 8 is the separation electrode of the present invention and the assembly structure diagram of the first separator；

Fig. 9 is the structural representation of the electrode lead-out pins of the present invention；

Figure 10 is the structural representation of the shell of the present invention.

Reference：1st, inner casing, 11, electrode hole, 12, track platform, 13, divider wall, 14, chute, 15, through hole, 1a, first Compartment, 1b, the second compartment, 2a, the first separator, 2b, the second separator, 21, stretch out hole, 22, spacing slideway, 23, spring groove, 24th, instruction device, 25, flank, 26, anti-arc guard, 27, screens groove, 3, separation electrode, 3a, movable separating end, 3b, fusing insurance, 3c, electrode connecting end, 3a1, wing arm, 4, metal electrode film, 41, first electrode, 42, second electrode；4a, jack, 5, voltage it is quick Sensing unit, 6, flexible member, 7, electrode lead-out pins, 7a, first electrode leading foot, 7b, second electrode leading foot, 8, shell.

Embodiment

The present invention is described in more detail with reference to the accompanying drawings and detailed description, but protection scope of the present invention It is not only limited to following preferred embodiment；The present invention is used as implementation by stage clip of the flexible member of surge protective device Example, is described in detail to the structure of surge protective device of the present invention.

Embodiment 1：

One kind keeps away camber circuit protection module, including housing, preventing arc component, voltage-sensitive component, electrode lead-out pins 7, sound Inductive switch component and instruction device 24；Described housing includes inner casing 1 and shell；Described inner casing 1 is closed-in construction；Described Inner casing 1 and shell are combined by way of lock, when inner casing 1 is engaged with shell by way of lock, form two closings Cavity；Two described closed cavities are respectively the first cavity and the second cavity；Described voltage-sensitive component is placed in the second chamber In vivo；Described inner casing 1 is provided with two electrode holes, 11, two track platforms 12 and one piece of divider wall 13；Described divider wall 13 First cavity is divided into two enclosed compartments；Two described enclosed compartments are respectively the first compartment 1a and the second compartment 1b, In the first compartment 1a, another electrode hole 11 and another track platform 12 exist for one of electrode hole 11 and a track platform 12 In second compartment 1b；The described both sides of inner casing 1 are respectively equipped with chute 14；Described preventing arc component includes four Hes of flexible member 6 Two separators；Two described separators are respectively the first separator 2a and the second separator 2b；Described voltage-sensitive group Part includes a voltage sensitive element 5；Described responding to switch component includes two separation electrodes 3, temperature-sensitive element, first electrodes 41 and second electrode 42；Described separation electrode 3 is made up of movable separating end 3a, fusing insurance 3b and electrode connecting end 3c；Institute The movable separating end 3a stated is provided with two wing arm 3a1.

Described separator interior is provided with the placed cavity of separation electrode 3；The bottom of separator is provided with groove；Before separator Stretching hole 21 of the end provided with electrode connecting end 3c；The both sides of separator are additionally provided with wing arm 3a1 spacing slideway 22；Separator its Middle side is provided with spring groove 23, and the front end of spring groove 23 is provided with instruction device 24, and opposite side is provided with flank 25；Described separator is also Screens groove 27 provided with anti-arc guard 26 and anti-arc guard 26.Described separator is socketed on track platform 12.

The described tow sides of voltage sensitive element 5 are respectively equipped with metal electrode film 4；Described first electrode 41 is located at it In on a metal electrode film 4, described second electrode 42 is located on another metal electrode film 4；Described first electrode 41, Second electrode 42 is extended in the first cavity by two electrode holes 11 from the second cavity respectively；Described first electrode 41, second Electrode 42 is respectively equipped with a jack 4a；When the front end of the first described separator 2a touches with first electrode 41, or it is described When second separator 2b front end touches with second electrode 42, described jack 4a position is relative with the position for stretching out hole 21 Should.

The first described separator 2a is located in the first compartment 1a；The second described separator 2b is located at the second compartment 1b It is interior；Described separator is socketed on track platform 12；In four described flexible members 6, two of which flexible member 6 covers respectively In the chute 14 of the both sides of inner casing 1, two other is respectively fitted in spring groove 23；Described separation electrode 3 is placed in separator In placed cavity, movable separating end 3a wing arm 3a1 stretches out spacing slideway 22, and wherein the wing arm 3a1 on one side is by spring groove 23 One end biasing of flexible member 6；Electrode connecting end 3c stretches out from stretching hole 21, jack 4a respectively；Described electrode connecting end 3c Welded with jack 4a by temperature-sensitive element.

Described electrode lead-out pins 7 include first electrode leading foot 7a and second electrode leading foot 7b；1 liang of described inner casing Side is additionally provided with first electrode leading foot 7a and second electrode leading foot 7b through hole 15, first electrode leading foot 7a, second electrode Leading foot 7b extends outside by through hole 15 inside inner casing 1 respectively, so as to form two external pins；Described first electrode Leading foot 7a forms circuit with the movable separating end 3a of the separation electrode 3 in the first separator 2a by flexible conductor and is connected；It is described Second electrode leading foot 7b pass through in flexible conductor and the second separator 2b separation electrode 3 movable separating end 3a form circuit Connection.

Described temperature-sensitive element is meltable metal alloy solder.Described fusing insurance 3b is moment vapour after a kind of fusing The metal alloy compositions of change.Described voltage sensitive element 5 is piezoresistor type sensing element.Described flexible member 6 is pressure Spring.Described instruction device is electric instruction device；Described shell is provided with indication window.

When using surge protective device in the power supply system, two external pins are connected in phase line and the neutral conductor； The first described separator 2a is located in the first compartment 1a；The second described separator 2b is located in the second compartment 1b；Wherein two Individual flexible member 6 is respectively fitted in the chute 14 of the both sides of inner casing 1, and two other is respectively fitted in spring groove 23；Described separation Electrode 3 is placed in the placed cavity of separator, and movable separating end 3a wing arm 3a1 stretches out spacing slideway 22, the wherein wing arm on one side 3a1 is biased by one end of the flexible member 6 in spring groove 23；Described movable separating end 3a and fusing insurance 3b is hidden in separation In device, when the front end of the first described separator 2a touches with first electrode 41, the front end of the second described separator 2b and the When two electrodes 42 touch, described electrode connecting end 3c stretches out jack 4a and stretches out hole 21, then by temperature-sensitive element respectively with the One electrode 41, the soldering of second electrode 42 form circuit connection；Described first electrode leading foot 7a, second electrode leading foot 7b divides Circuit is not formed by the movable separating end 3a of the separation electrode 3 in flexible conductor and the first separator 2a, the second separator 2b to connect Connect；Now, responding to switch component connects to form normally closed working condition with voltage-sensitive component, and spring is wave by stress Gush protection device normal operating conditions.

Embodiment 2：

A kind of another embodiment for keeping away camber circuit protection module of the present invention.The embodiment has and embodiment 1 Middle most of component similar structure and usage, the main distinction are：

Two external pins are connected in phase line and ground wire.Described temperature-sensitive element is meltable metal alloy weldering Material.Described two voltage sensitive elements 5 of voltage-sensitive component；Described voltage sensitive element 5 is electric discharge tubular type sensing element. Described instruction device is mechanical indication means.

When voltage sensitive element 5, voltage-sensitive is first caused by leakage current caused by short-circuit overload current or its shelf-life aging When part 5 is heating up, this temperature is delivered in first electrode 41, is promoted temperature-sensitive element to reach preset fusion temperature and is melted Change；Movable separating end 3a launches rapidly electrode connecting end 3c before electric arc produces under the elastic stress effect of flexible member 6 Return in the first separator 2a, the temperature-sensitive element of fusing on electrode connecting end 3c is extended hole 21 and struck off, and promotes first electrode 41 separate with electrode connecting end 3c；The dielectric strength of abundance is formed between first electrode 41 and electrode connecting end 3c；It is meanwhile described The first separator 2a acted on to away from the direction of first electrode 41 and moving by the elastic stress of flexible member 6；Thoroughly isolation Separate electrode 3 and the electrical connection of first electrode 41；Prevent electric arc caused by ejection separation from forming electrical breakdown and triggering short circuit overload； Now, the working condition of responding to switch component is changed into normally opened, the submitting surge protective device protection mistake of instruction device 24 by normally closed Imitate signal.

Embodiment 3：

A kind of another embodiment for keeping away camber circuit protection module of the present invention.The embodiment has and embodiment 1 Middle most of component similar structure and usage, the main distinction are：

Described voltage sensitive element 5 is discharging gap formula sensing element.

When the instantaneous voltage or excessive electric current by keeping away camber circuit protection module, fusing insurance 3b thereon melts at once Cutting steam causes movable separating end 3a and electrode connecting end 3c to separate, while movable separating end 3a should by the elasticity of flexible member 6 Power acts on is launched to the direction away from electrode connecting end 3c, and the second described separator 2a is made by the elastic stress of flexible member 6 Moved with to the direction away from electrode connecting end 3c；Wherein movable separating end 3a is hidden in the separator, in this way, electrode connecting end The dielectric strength of abundance is formed between 3c and movable separating end 3a, thoroughly prevents electric arc caused by disjunction from forming electrical breakdown；This When, the working condition of responding to switch component is changed into normally opened, the submitting surge protective device shielding failure of instruction device 24 by normally closed Signal.

Claims (9)

1. one kind keeps away camber circuit protection module, including housing, preventing arc component, voltage-sensitive component, electrode lead-out pins (7), sound Inductive switch component and instruction device (24)；Described housing includes inner casing (1) and shell (8)；Described inner casing (1) is frame knot Structure；Described inner casing (1) and shell (8) is combined by way of lock, when inner casing (1) and shell (8) are by way of lock During engagement, two closed cavities are formed；Two described closed cavities are respectively the first cavity and the second cavity；Described voltage Sensing assembly is placed in the second cavity；It is characterized in that：Described inner casing (1) is provided with two electrode holes (11), two tracks Platform (12) and one piece of divider wall (13)；First cavity is divided into two enclosed compartments by described divider wall (13)；Described two Individual enclosed compartment is respectively the first compartment (1a) and the second compartment (1b)；Two described electrode holes (11) and two track platforms (12) in, one of electrode hole (11) and a track platform (12) in the first compartment (1a), another electrode hole (11) and Another track platform (12) is in the second compartment (1b)；Described inner casing (1) both sides are respectively equipped with chute (14)；Described preventing arc Component includes four flexible members (6) and two separators；Two described separators are respectively the first separator (2a) and Two separators (2b)；Described voltage-sensitive component includes more than one voltage sensitive element (5)；Described responding to switch group Part includes two separation electrodes (3), temperature-sensitive element, first electrode (41) and second electrode (42)；Described separation electrode (3) by Movable separating end (3a), fusing insurance (3b) and electrode connecting end (3c) composition；Described movable separating end (3a) is provided with two Wing arm (3a1).

2. one kind according to claim 1 keeps away camber circuit protection module, it is characterised in that：Described separator interior is set There is the placed cavity of separation electrode (3)；The bottom of separator is provided with groove；The front end of separator stretching provided with electrode connecting end (3c) Portal (21)；The both sides of separator are additionally provided with the spacing slideway (22) of wing arm (3a1)；The wherein side of separator is provided with spring groove (23), opposite side is provided with flank (25)；Described spring groove (23) front end is provided with instruction device (24), and described separator is also set There is the screens groove (27) of anti-arc guard (26) and anti-arc guard (26).

3. one kind according to claim 1 keeps away camber circuit protection module, it is characterised in that：Described voltage sensitive element (5) tow sides are respectively equipped with metal electrode film (4)；Described first electrode (41) is located at one of metal electrode film (4) On, described second electrode (42) is located on another metal electrode film (4)；Described first electrode (41), second electrode (42) extended respectively by two electrode holes (11) from the second cavity in the first cavity；Described first electrode (41), the second electricity Pole (42) is respectively equipped with a jack (4a)；When the front end of described the first separator (2a) touches with first electrode (41), or When the front end of described the second separator (2b) touches with second electrode (42), the position of described jack (4a) is with stretching out hole (21) position is corresponding.

4. one kind according to claim 1 keeps away camber circuit protection module, it is characterised in that：The first described separator (2a) is located in the first compartment (1a)；Described the second separator (2b) is located in the second compartment (1b)；Described separator set It is connected on track platform (12)；In four described flexible members (6), two of which flexible member (6) is respectively fitted over inner casing (1) two In the chute (14) of side, two other is respectively fitted in spring groove (23)；Described separation electrode (3) is placed in the placement of separator Intracavitary, the wing arm (3a1) of movable separating end (3a) stretch out spacing slideway (22), and wherein the wing arm (3a1) on one side is by spring groove (23) one end biasing of the flexible member (6) in；Electrode connecting end (3c) stretches out from stretching hole (21), jack (4a) respectively；Institute The electrode connecting end (3c) stated is welded with jack (4a) by temperature-sensitive element.

5. one kind according to claim 1 keeps away camber circuit protection module, it is characterised in that：Described electrode lead-out pins (7) first electrode leading foot (7a) and second electrode leading foot (7b) are included；Described inner casing (1) both sides are additionally provided with first electrode The through hole (15) of leading foot (7a) and second electrode leading foot (7b), first electrode leading foot (7a), second electrode leading foot (7b) extends outside by through hole (15) inside inner casing (1) respectively；Described first electrode leading foot (7a) passes through flexible conductor It is connected with the movable separating end (3a) of the separation electrode (3) in the first separator (2a)；Described second electrode leading foot (7b) It is connected by flexible conductor with the movable separating end (3a) of the separation electrode (3) in the second separator (2b).

6. one kind according to claim 1 keeps away camber circuit protection module, it is characterised in that：Described temperature-sensitive element is easy Molten metal alloy solder or conducting polymer.

7. one kind according to claim 1 keeps away camber circuit protection module, it is characterised in that：Described voltage sensitive element (5) it is piezoresistor type sensing element, any one in electric discharge tubular type sensing element, discharging gap formula sensing element.

8. one kind according to claim 1 keeps away camber circuit protection module, it is characterised in that：Described fusing insurance (3b) It is a kind of metal alloy compositions of instant vaporization after fusing.

9. one kind according to claim 1 keeps away camber circuit protection module, described instruction device (24) is electrically instruction Device or mechanical indication means；Described shell (8) is provided with indication window.