CN206134402U - A piezoresistor for arrester - Google Patents
A piezoresistor for arrester Download PDFInfo
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- CN206134402U CN206134402U CN201621250689.4U CN201621250689U CN206134402U CN 206134402 U CN206134402 U CN 206134402U CN 201621250689 U CN201621250689 U CN 201621250689U CN 206134402 U CN206134402 U CN 206134402U
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- shell
- pin
- piezoresistor
- piezo
- silica gel
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Abstract
The utility model discloses a piezoresistor for arrester, it includes the shell, is equipped with buffering filler and piezo -resistor in the shell, and piezo -resistor includes the piezo -resistor body and is located the pin on the piezo -resistor body, and the buffering filler is filled between piezo -resistor body and shell, and outside the pin extended to the shell from the lower extreme opening part of shell, the lower extreme opening of shell solidified sealedly through silica gel, the top of shell is equipped with a plurality of through -hole, is equipped with the rubber buffer in the through -hole, the contact site of shell external pin and silica gel is equipped with prevents a section of thick bamboo, prevents a section of thick bamboo and silica gel setting as an organic whole to safe in utilization and can effectually prevent that the pin from buckling, through being equipped with the kink that extends to the outside in pin and the relative junction in zinc oxide varistor ceramic piece border, make the external connecting terminal skew of pin get around piezo -resistor ceramic chip border, the skew clearance of formation can prevent that electric arc inefficacy problem from appearing in the piezo -resistor product when the thunderbolt.
Description
Technical field
This utility model is related to technical field of electronic components, more particularly to a kind of piezoresistor for spark gap.
Background technology
The piezoresistor for being conventionally used to spark gap uses the organic materials such as epoxy resin parcel, when actually used, one
As be parallel to by protection equipment.When extraneous surge energy exceedes the tolerance of varistor, varistor can be breakdown short
Road, transcient short circuit time energy are very big, and localized hyperthermia can be produced at punch through damage, may draw the coating layer wrapped up outside chip varistor
Combustion, is likely to result in electrical fire when serious.Additionally, it is easy to be conventionally used to spark gap piezoresistor pin bottom in thunderbolt
Form electric arc, stannum or other conductors are remained in and drawn after reason is that pin is contacted with piezoresistor ceramics or gap is too little or welds
Between foot and voltage dependent resistor chip, in lightning stroke process easily producing electric arc causes product failure.
Utility model content
Technical problem to be solved in the utility model is to provide one kind and can effectively avoid rupture of case, use safety simultaneously
The piezoresistor for spark gap of bending pins can effectively be prevented.
To solve above-mentioned technical problem, technical solution adopted in the utility model is：It is a kind of for the pressure-sensitive of spark gap
Resistor, it is characterised in that：Including shell, the inside the shell is provided with buffer fillings thing and varistor, the varistor bag
Varistor body and the pin on varistor body are included, the buffer fillings thing is filled in the varistor body
Between the shell, the pin is extended to outside the shell from the lower ending opening of shell, the lower ending opening of the shell
Solidification sealing is carried out by silica gel, the contact site of the shell outer pin and silica gel is provided with anti-folding cylinder, the anti-folding cylinder with it is described
Silica gel is integrated setting；Several through holes are provided with the top of the shell, rubber stopper are provided with the through hole, on the rubber stopper
Passage is provided with, the diameter of the passage is from inside to outside gradually reduced and is connected with the external world after drawing a segment distance in.
Further technical scheme is：The varistor body includes Zinc-oxide piezoresistor ceramics, the ceramics
Two apparent surfaces be provided with silver electrode layer, the medial end of two pins is welded on the symmetrical table of the ceramics by scolding tin respectively
On the silver electrode layer at the middle part in face, the pin is provided with what is extended laterally at place relative with Zinc-oxide piezoresistor ceramics edge
Kink, the external connection end of the pin keep certain gap, epoxy between Zinc-oxide piezoresistor ceramics Jing after kink
Whole Zinc-oxide piezoresistor ceramics, the medial end of pin and part kink are wrapped up by resin surface layer.
Further technical scheme is：The kink is started from outside pin weld part.
Further technical scheme is：The gap is 0.5～1.5 millimeter.
Further technical scheme is：The buffer fillings thing is spheroidal particle or cylindrical particle.
Further technical scheme is：Insulation and moisture incombustible material of the buffer fillings thing using high temperature resistance and high strength
It is made.
Using the beneficial effect produced by above-mentioned technical proposal it is：Fill between the varistor body and shell
The granular pattern protection against the tide incombustible material of high temperature resistance and high strength, can effectively play the effect of resistance to compression buffering and moistureproof radiating；Shell
Through hole is provided with, rubber stopper in through hole, is provided with, rubber stopper is provided with passage, and the diameter of passage is from inside to outside gradually reduced simultaneously
It is connected with the external world after drawing a segment distance in, when the air pressure of inside the shell becomes big, by gas after the gathering section on passage is supportted greatly
Body discharge, make the air pressure of inside the shell equal with atmospheric pressure, effectively can prevent because inside the shell air pressure is excessive cause it is quick-fried
It is fried；When recovering to atmospheric pressure, the gathering section on passage reverts to original state, can effectively prevent water or dampness from ventilation
Hole enters into the inside the shell so as to work more stable, service life is longer.The shell outer pin is set with the contact site of silica gel
Have an anti-folding cylinder, the anti-folding cylinder is integrated setting with the silica gel, effectively can prevent during use or transport by
In external force, pin fractures in its junction bending with silica gel.
Additionally, by being provided with extend laterally curved in the pin junction relative with Zinc-oxide piezoresistor ceramics edge
Folding part, offsets the external connection end of pin and gets around varistor ceramics edge, and the offset by gap of formation can prevent varistor from producing
There is electric arc Problem of Failure in thunderbolt in product.
Description of the drawings
With reference to the accompanying drawings and detailed description this utility model is described in further detail.
Fig. 1 is the cross section structure diagram of piezoresistor described in this utility model embodiment；
Fig. 2 is the cross section structure diagram of varistor described in this utility model embodiment；
Fig. 3 is the enlarged section structural representation of rubber stopper described in this utility model embodiment；
Wherein：1st, shell, 2, buffer fillings thing, 3, varistor body, 31, Zinc-oxide piezoresistor ceramics, 32, silver electricity
Pole layer, 33, epoxy skins, 4, pin, 41, kink, 42, external connection end, 5, silica gel, 6, through hole, 7, rubber stopper, 8, ventilation
Hole, 9, anti-folding cylinder.
Specific embodiment
With reference to the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out clearly
Chu, it is fully described by, it is clear that described embodiment is only a part of embodiment of the present utility model, rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of this utility model protection.
Many details are elaborated in the following description in order to fully understand this utility model, but this practicality is new
Type can also be different from alternate manner described here to implement using other, and those skilled in the art can be without prejudice to this reality
With doing similar popularization in the case of new intension, therefore this utility model is not limited by following public specific embodiment.
As shown in figure 1, the utility model discloses a kind of piezoresistor for spark gap, including shell 1, shell
Making material can be any one of the prior art, additionally, concrete size those skilled in the art of shell are according to being slapped
The knowledge held can make appropriate selection, meet the specific requirement of the application.Buffer fillings thing 2 is provided with the shell 1
And varistor, the varistor includes varistor body 3 and the pin 4 on varistor body 3, needs explanation
, the varistor can for it is of the prior art any one.
The buffer fillings thing 2 is filled between the varistor body 3 and the shell 1, and the pin 4 is from shell
Extend at 1 lower ending opening outside the shell 1, the lower ending opening of the shell 1 carries out solidification sealing by silica gel 5, described
1 outer pin 4 of shell is provided with anti-folding cylinder 9 with the contact site of silica gel 5, and the anti-folding cylinder 9 is integrated setting with the silica gel 5, needs
Illustrate, generally the anti-folding cylinder 9 and silica gel 5 is by same technique one adult, therefore the anti-making for rolling over cylinder 9
Material is similarly silica gel；The top of the shell 1 is provided with several through holes 6, is provided with rubber stopper 7, the rubber in the through hole 6
Plug 7 is provided with passage 8, and the diameter of the passage 8 is from inside to outside gradually reduced and is connected with the external world after drawing a segment distance in
Logical (passage 8 starts to be in communication with the outside for the poroid gap-like that then becomes), as shown in Figure 3.It should be noted that the rubber stopper
Can be fixed in the through hole by adhesive, be convenient for changing, and install simple.
Shell is provided with through hole, and rubber stopper is provided with through hole, and rubber stopper is provided with passage, and the diameter of passage is from introversion
It is connected with the external world after being gradually reduced outward and drawing in a segment distance, when the air pressure of inside the shell becomes big, by the gathering on passage
Gas is discharged after section support is big, make the air pressure of inside the shell equal with atmospheric pressure, effectively can prevent because of inside the shell air pressure mistake
The blast for causing greatly；When recover to atmospheric pressure when, the gathering section on passage reverts to original state, effectively can prevent water or
Person's dampness enters into the inside the shell from passage so as to work more stable, the life-span is longer.The shell outer pin and silica gel
Contact site is provided with anti-folding cylinder, the anti-folding cylinder is integrated settings with the silica gel, effectively can prevent from using or transport
During due to external force, pin fractures in its junction bending with silica gel.
As depicted in figs. 1 and 2, the varistor body 3 includes Zinc-oxide piezoresistor ceramics 31, the two of the ceramics
Individual apparent surface is provided with silver electrode layer 32, and the medial end of two pins is welded on the ceramics symmetrical surface by scolding tin respectively
Middle part silver electrode layer 32 on.The pin 4 is provided with place relative with Zinc-oxide piezoresistor ceramics edge and extends laterally
Kink 41, the external connection end 42 of the pin 4 keeps certain Jing after kink 41 between Zinc-oxide piezoresistor ceramics 31
Gap, epoxy skins 33 are by the medial end and part kink of whole Zinc-oxide piezoresistor ceramics 31, pin
41 parcels.It should be noted that concrete size this area of Zinc-oxide piezoresistor ceramics 31, silver electrode layer 32 and pin 4
Technical staff can carry out appropriate selection according to actual needs, to meet the needs of the application.Further, as shown in Fig. 2
The kink 41 is started from outside pin weld part, and the gap can be 0.5～1.5 millimeter.
By being provided with the kink for extending laterally in the pin junction relative with Zinc-oxide piezoresistor ceramics edge,
The external connection end skew of pin is made to get around varistor ceramics edge, the offset by gap of formation can prevent varistor product in thunder
Occurs electric arc Problem of Failure when hitting.
Preferably, the buffer fillings thing 2 is spheroidal particle or cylindrical particle.Further, the buffer fillings
Thing 2 is made using the insulation and moisture incombustible material of high temperature resistance and high strength.Because between the varistor body and shell
Fill the granular pattern protection against the tide incombustible material of high temperature resistance and high strength and there is between granule and granule certain space, can be effective
Play the effect of resistance to compression buffering and moistureproof radiating.
Used as another preferred version, the surface of shell 1 is provided with organic silicon coating, and organic silicon coating thickness can be 0.02
～0.1 millimeter, the organic silicon coating has good high-temperature stability so that piezoresistor of the present utility model can be in ring
Run under the conditions of up to 125 DEG C of border temperature, and traditional piezoresistor only can tolerate 85 DEG C of high temperature.
Claims (6)
1. a kind of piezoresistor for spark gap, it is characterised in that：Including shell (1), the shell (1) is interior to be provided with buffering
Implant (2) and varistor, the varistor include varistor body (3) and are located on varistor body (3)
Pin (4), the buffer fillings thing (2) are filled between the varistor body (3) and the shell (1), the pin
(4) shell (1) is extended to outward from the lower ending opening of shell (1), the lower ending opening of the shell (1) passes through silica gel (5)
Solidification sealing is carried out, the shell (1) outer pin (4) is provided with anti-folding cylinder (9), anti-folding cylinder (9) with the contact site of silica gel (5)
Setting is integrated with the silica gel (5)；It is provided with the top of the shell (1) in several through holes (6), the through hole (6) and is provided with
Rubber stopper (7), the rubber stopper (7) are provided with passage (8), and the diameter of the passage (8) is from inside to outside gradually reduced simultaneously
It is connected with the external world after drawing a segment distance in.
2. the piezoresistor of spark gap is used for as claimed in claim 1, it is characterised in that：Varistor body (3) bag
Include Zinc-oxide piezoresistor ceramics (31), two apparent surfaces of the ceramics are provided with silver electrode layer (32), two pins it is interior
Side end is welded on by scolding tin on the silver electrode layer (32) at the middle part of the ceramics symmetrical surface respectively, and the pin (4) exists
Place relative with Zinc-oxide piezoresistor ceramics edge is provided with the kink (41) for extending laterally, the external connection end of the pin (4)
(42) certain gap, epoxy skins (33) are kept Jing after kink (41) between Zinc-oxide piezoresistor ceramics (31)
Whole Zinc-oxide piezoresistor ceramics (31), the medial end of pin and part kink (41) are wrapped up.
3. the piezoresistor of spark gap is used for as claimed in claim 2, it is characterised in that：The kink (41) starts from pin
Outside weld part.
4. the piezoresistor of spark gap is used for as claimed in claim 2, it is characterised in that：The gap is 0.5～1.5 milli
Rice.
5. the piezoresistor of spark gap is used for as claimed in claim 1, it is characterised in that：The buffer fillings thing (2) is ball
Shape granule or cylindrical particle.
6. the piezoresistor of spark gap is used for as claimed in claim 1, it is characterised in that：The buffer fillings thing (2) uses
The insulation and moisture incombustible material of high temperature resistance and high strength is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621250689.4U CN206134402U (en) | 2016-11-22 | 2016-11-22 | A piezoresistor for arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621250689.4U CN206134402U (en) | 2016-11-22 | 2016-11-22 | A piezoresistor for arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206134402U true CN206134402U (en) | 2017-04-26 |
Family
ID=58563091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621250689.4U Active CN206134402U (en) | 2016-11-22 | 2016-11-22 | A piezoresistor for arrester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206134402U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107768052A (en) * | 2017-10-20 | 2018-03-06 | 惠州市欣旭电子有限公司 | A kind of SMD piezo-resistance manufacture craft and SMD piezo-resistance |
-
2016
- 2016-11-22 CN CN201621250689.4U patent/CN206134402U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107768052A (en) * | 2017-10-20 | 2018-03-06 | 惠州市欣旭电子有限公司 | A kind of SMD piezo-resistance manufacture craft and SMD piezo-resistance |
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