CN206116126U - Flame -retardant explosion -proof type piezoresistor packaging structure - Google Patents

Abstract

The utility model provides a simple structure, job stabilization just can effectively avoid the flame -retardant explosion -proof type piezoresistor packaging structure of piezo -resistor spontaneous combustion, and it includes piezo -resistor and is used for the installation piezo -resistor's high temperature resistant fire -retardant casing, vacancy department between piezo -resistor and the high temperature resistant fire -retardant casing fills to have possesses the filler of putting out a fire with the arc extinguishing effect, compared with the prior art, this scheme is through adopting above -mentioned structure, can so that piezo -resistor its when losing efficacy, have the filler (for example quartz sand) of putting out a fire with the arc extinguishing function and can play the effect of putting out a fire with the arc extinguishing, with regard to the effectual emergence of having avoided piezo -resistor's natural phenomena, some trompils are offered to this shell body bottom also can divide heat energy by effectual relief part to can prevent that the phenomenon that the casing explodes out because of the big impact that receives from taking place.

Description

A kind of fire and explosion proof type piezoresistor encapsulating structure

Technical field

This utility model is related to electronic package technical field, more particularly to a kind of fire and explosion proof type piezoresistor Encapsulating structure.

Background technology

Above the typically all exposed assist side of the use of electronic devices and components, due to there is no what protective measure, especially Pressure cell, in use, in the case of high voltage, high current, it easily burns and produces naked light, thus burns out electricity Road plate, or even damage whole equipment.In this regard, for protection equipment, just varistor must be encapsulated.In existing use Varistor encapsulating structure, it is varistor to be fixed in housing using fluid sealant, and by piezoresistor Two leads are drawn from the upper lid of housing, and it is sealing structure that it is internal.The varistor encapsulating structure of existing this kind of version Its in use, when its internal varistor is subject to continuous high-pressure or thunderbolt destruction, it is possible to by the upper of housing Lid is washed open and damaged.In view of this, for how searching out a kind of simple structure, working stability and can be prevented effectively from pressure-sensitive The varistor encapsulating structure of resistance spontaneous combustion is just particularly important.

The content of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, there is provided a kind of simple structure, working stability and can It is prevented effectively from the fire and explosion proof type piezoresistor encapsulating structure of varistor spontaneous combustion.

For achieving the above object, technical scheme provided by the utility model is：A kind of fire and explosion proof type piezoresistor Encapsulating structure, the encapsulating structure includes varistor and the heat-resistant fireproof housing for installing the varistor, its It is characterised by：Empty place between the varistor and heat-resistant fireproof housing is filled with possessing fire extinguishing and arc quenching effect is filled out Fill thing.

Further, the fluid sealant for preventing the varistor from rocking is also filled with the encapsulating structure.

Further, the multiple perforates for discharging its interior heat energy are provided with described its bottom face of heat-resistant fireproof housing.

Preferably, the heat-resistant fireproof housing is made up of the end cap and base that are packaged in one, the varistor peace In being mounted in the base intracavity, wherein being provided with the base its bottom face multiple for discharging produced by the varistor The perforate of heat energy.

Further, the end cap is provided with for correcting two when varistor a pair of lead wires thereon is stretched out The correction hole of mutual distance between person.

Yet further, its inner chamber of the base is provided with four locating pieces for installing the varistor.

Preferably, the implant is quartz sand.

Compared with prior art, by adopting said structure, it is this programme in failure can to cause varistor, has Fire extinguishing and the implant of arc-suppression function（Such as quartz sand）The effect of fire extinguishing and arc extinguishing can be played, is just effectively avoided pressure-sensitive The generation of the natural phenomena of resistance；The perforate that this shell body bottom offers can also effectively discharge partial heat energy, so as to can Occur with the phenomenon for preventing housing from popping because of the big impact being subject to.

Description of the drawings

Fig. 1 is dimensional structure diagram of the present utility model.

Fig. 2 is longitudinal profile structure schematic of the present utility model.

Fig. 3 installs assembling decomposition texture schematic diagram for of the present utility model.

Fig. 4 is the end cap dimensional structure diagram in this utility model.

Fig. 5 is the base dimensional structure diagram in this utility model.

Fig. 6 is the positioning block structure schematic diagram positioned at chassis interior in this utility model.

In figure：100- encapsulating structures, 1- varistors, 2- leads, 3- bases, 31- perforates, 32- locating pieces, 4- end caps, 41- correction holes, 5- implants, 6- fluid sealants.

Specific embodiment

With reference to specific embodiment, the utility model is described in further detail：

Referring to shown in accompanying drawing 1 to 6, the device encapsulating structure 100 of a kind of fire and explosion proof type varistor 1 described in the present embodiment, The encapsulating structure 100 includes varistor 1 and the heat-resistant fireproof housing for installing varistor 1, the He of varistor 1 Empty place between heat-resistant fireproof housing is filled with the implant 5 for possessing fire extinguishing and arc quenching effect, it is preferable that the implant 5 Using quartz sand.

In order to prevent varistor 1 from rocking in use, it is also filled with preventing pressure in the present embodiment encapsulating structure 100 The fluid sealant 6 that quick resistance 1 is rocked.

Referring to the drawings shown in 5, in order to the phenomenon for preventing heat-resistant fireproof housing from popping because of the big impact being subject to occurs, The multiple perforates 31 for discharging its interior heat energy are provided with heat-resistant fireproof housing its bottom face in the present embodiment.Preferably, originally Above-mentioned heat-resistant fireproof housing in embodiment is made up of the end cap 4 and base 3 for being packaged in one, and varistor 1 is arranged on bottom In 3 inner chambers of seat, multiple perforates 31 for discharging heat energy produced by varistor 1 are wherein provided with its bottom face of base 3.

Referring to the drawings shown in 4, for the ease of quickly correcting the distance between two leads 2 thereon of varistor 1, this reality Apply the above-mentioned end cap 4 in example be provided with it is mutual between the two when a pair of lead wires 2 thereon of varistor 1 is stretched out for correcting The correction hole 41 of distance.

Referring to the drawings shown in 6, varistor 1 is installed for the ease of fast and stable, above-mentioned base 3 its inner chamber sets It is equipped with four locating pieces 32 for installing varistor 1.

The examples of implementation of the above are only the preferred embodiment of this utility model, not limit of the present utility model with this Practical range, therefore the change that all shapes according to this utility model, principle are made, all should cover in protection domain of the present utility model It is interior.

Claims (7)

1. a kind of fire and explosion proof type piezoresistor encapsulating structure, the encapsulating structure includes varistor and for installing State the heat-resistant fireproof housing of varistor, it is characterised in that：Room between the varistor and heat-resistant fireproof housing Place is filled with the implant for possessing fire extinguishing and arc quenching effect.

2. a kind of fire and explosion proof type piezoresistor encapsulating structure according to claim 1, it is characterised in that：The encapsulation The fluid sealant for preventing the varistor from rocking is also filled with structure.

3. a kind of fire and explosion proof type piezoresistor encapsulating structure according to claim 1 and 2, it is characterised in that：It is described The multiple perforates for discharging its interior heat energy are provided with heat-resistant fireproof housing its bottom face.

4. a kind of fire and explosion proof type piezoresistor encapsulating structure according to claim 3, it is characterised in that：The resistance to height Warm flame-proof casing is made up of the end cap and base for being packaged in one, and the varistor is arranged in the base intracavity, wherein Multiple perforates for discharging heat energy produced by the varistor are provided with the base its bottom face.

5. a kind of fire and explosion proof type piezoresistor encapsulating structure according to claim 4, it is characterised in that：The end cap It is provided with for correcting when varistor a pair of lead wires thereon is stretched out the correction hole of mutual distance between the two.

6. a kind of fire and explosion proof type piezoresistor encapsulating structure according to claim 5, it is characterised in that：The base Its inner chamber is provided with four locating pieces for installing the varistor.

7. a kind of fire and explosion proof type piezoresistor encapsulating structure according to claim 1 and 2, it is characterised in that：It is described Implant is quartz sand.