CN203673907U - Cut-off protection type varistor - Google Patents
Cut-off protection type varistor Download PDFInfo
- Publication number
- CN203673907U CN203673907U CN201420014907.9U CN201420014907U CN203673907U CN 203673907 U CN203673907 U CN 203673907U CN 201420014907 U CN201420014907 U CN 201420014907U CN 203673907 U CN203673907 U CN 203673907U
- Authority
- CN
- China
- Prior art keywords
- copper pin
- pin
- protection type
- copper foot
- welding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 92
- 229910052802 copper Inorganic materials 0.000 claims abstract description 92
- 239000010949 copper Substances 0.000 claims abstract description 92
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000003466 welding Methods 0.000 claims abstract description 22
- 239000011787 zinc oxide Substances 0.000 claims abstract description 14
- 239000000919 ceramic Substances 0.000 claims description 12
- 229960001296 zinc oxide Drugs 0.000 claims description 12
- 239000004593 Epoxy Substances 0.000 claims description 9
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 9
- 238000013459 approach Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 239000004033 plastic Substances 0.000 abstract description 20
- 238000005192 partition Methods 0.000 abstract description 3
- 239000003822 epoxy resin Substances 0.000 abstract 2
- 229920000647 polyepoxide Polymers 0.000 abstract 2
- 238000005476 soldering Methods 0.000 abstract 2
- 239000002344 surface layer Substances 0.000 abstract 2
- 238000005452 bending Methods 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 19
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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Abstract
The utility model discloses a cut-off protection type varistor which comprises a zinc oxide varistor tile, an upper copper foot, a lower copper foot, an epoxy resin surface layer and an elastic copper foot, wherein the upper copper foot and the lower copper foot are arranged on upper and lower surfaces of the zinc oxide varistor tile respectively, the body is coated with the epoxy resin surface layer, and an exposed window is arranged on the surface of the upper copper foot opposite to the body center; and the elastic copper foot comprises an internal welding end formed by bending, an elastic slope section with an inclined plane, a horizontal positioning section and an external connection section, the internal welding end of the elastic copper foot is welded on the surface of the upper copper foot in the exposed window through low-temperature soldering, the elastic slope section is provided with a branch foot which is separated at the inner end of the elastic slope section and connected at the outer end, and an inclined plane whose gradient is larger than that of the elastic slope section is formed. A pre-arranged plastic partition slider can slide automatically to cut off a soldering point between the upper surface of the upper copper foot and the elastic copper foot completely, so that the cut-off protection type varistor can cut off current completely.
Description
Technical field
The utility model relates to a kind of piezo-resistance, more particularly, relates in particular to a kind of tripping protection type piezo-resistance.
Background technology
Tripping protection type piezo-resistance is by a microswitch, is conventionally made up of 34 millimeters of square piezo-resistances and integrated thermal induction circuit breaker.Because abnormal overvoltage causes when superheating phenomenon, circuit breaker just can disconnect cutting off and being connected of equipment room automatically.Microswitch is stirred Show Options by a mechanical slide plate, and can use this switch that indicator circuit and main circuit are isolated completely.The maximum short circuit rated current of thermal cut-out protection type piezo-resistance is 200kA, and thermal cut-out protection type piezo-resistance is designed to require to meet UL1449(the 3rd edition) in the surge protective device application of 1 class or 2 classes regulation.
As shown in Figure 1: the product structure of traditional tripping protection type piezo-resistance is as follows: comprise Zinc-oxide piezoresistor ceramics 1 ', upper copper pin 2 ', lower copper pin 3 ', epoxy skins 4 ' and sprung copper pin 5 '; upper copper pin 2 ' and lower copper pin 3 ' be separately positioned on upper and lower surface of Zinc-oxide piezoresistor ceramics 1; epoxy skins 4 ' parcel body, body center institute on copper pin 2 ' surface be provided with exposed window 41 ', on exposed window 41 ' sprung copper pin 5 ' be welded on copper pin 2 ' surface.
This product is arranged in the product fixed bin a ' of tripping protection type in the time of concrete use; the plastic cement that the middle setting of product fixed bin a ' can automatic horizontal be slided cuts off slide block b '; plastic cement cuts off slide block b ' and is positioned at sprung copper pin 5 ' bottom; when sprung copper pin 5 ' with upper copper pin 2 ' pad occur molten when disconnected; plastic cement cut off slide block b sliding force make the exposed window 41 of copper pin 2 ' cover after upspringing '; plastic cement cuts off enough automatically slip of slide block energy b ' and disconnects the pad of upper copper pin upper surface and sprung copper pin completely, with complete turn-off current function.
This product is in the time doing the test of simulation abnormal overvoltage, because cutting off slide block, generation tin hook obstruction plastic cement after pad fusing automatically slides, so that cannot disconnect the pad of copper pin upper surface and sprung copper pin, turn-off current can continue logical temperature and continue the rising piezo-resistance naked light that burnt completely, thereby has the risk that causes larger danger.Therefore, how to address the above problem, become problem demanding prompt solution.
Utility model content
The purpose of this utility model is for above-mentioned the deficiencies in the prior art, provides a kind of and makes default plastic cement cut off slide block can automatically to slide and disconnect the pad of upper copper pin upper surface and sprung copper pin completely, with the tripping protection type piezo-resistance of complete turn-off current.
The technical solution of the utility model is such: a kind of tripping protection type piezo-resistance, comprise Zinc-oxide piezoresistor ceramics, upper copper pin, lower copper pin, epoxy skins and sprung copper pin, upper copper pin and lower copper pin are separately positioned on the upper and lower surface of Zinc-oxide piezoresistor ceramics, epoxy skins parcel body, body center institute on copper pin surface be provided with exposed window, its sprung copper pin comprises the welding the inner through being bent to form, the elasticity Landslide Section on inclined-plane, horizontal location section and external connection end, welding the inner of sprung copper pin is welded on the upper copper pin surface in exposed window by low temperature soldering-tin layer, elasticity Landslide Section is provided with bifurcated pin, bifurcated pin separates in the inner of elasticity Landslide Section, outer end disjunctor, formation has the inclined-plane that the gradient is greater than elasticity Landslide Section.
Above-mentioned tripping protection type piezo-resistance, upper copper pin and lower copper pin are arranged on respectively the upper and lower surface of Zinc-oxide piezoresistor ceramics by the welding of high temperature scolding tin.
Above-mentioned tripping protection type piezo-resistance, elasticity Landslide Section is made up of two-stage inclined-plane.
Above-mentioned tripping protection type piezo-resistance, welding the inner of upper copper pin and sprung copper pin is mutually stacked, is provided with the welding of low temperature soldering-tin layer between upper copper pin and welding the inner of sprung copper pin.
Above-mentioned tripping protection type piezo-resistance, bifurcated pin is arranged on the inner root in chopped-off head inclined-plane, disjunctor outer end at boundary broken line place, two-stage inclined-plane along the setting of chopped-off head inclined-plane, its separation the inner.
Above-mentioned tripping protection type piezo-resistance, the free end of bifurcated pin approaches the inner lower surface of welding.
Adopt the utility model of technique scheme; by being arranged in the product fixed bin of tripping protection type; the plastic cement can automatic horizontal sliding is set in product fixed bin and cuts off slide block; plastic cement cuts off slide block and is positioned at sprung copper underfooting portion; when the pad of sprung copper pin and upper copper pin occurs molten when disconnected; plastic cement cuts off slide block sliding force and first touches its close bifurcated pin, and bifurcated pin pops up sprung copper pin entirety, and plastic cement partition slide block is taken advantage of a situation and injected and cover exposed window forward.The rear tin that produces of pad fusing of having separated inner side at bifurcated pin hooks, make plastic cement cut off slide block directly earthing bifurcated pin in advance jack-up sprung copper pin entirety pop up, realization prevents from producing after pad fusing tin and hooks and hinder that plastic cement cuts off slide block and the pad of realizing automatic slip and disconnect completely copper pin upper surface and sprung copper pin, with complete turn-off current function.
The utility model is achieved as follows technique effect: 1, peak value surge current disposal ability and high energy absorption capability; 2, short circuit rated current: current value is 200kA:20kA; 3, thermal cut-out protection type piezo-resistance comprises a 34mm piezo-resistance and an integrated thermal open-circuit system, can cause disconnecting when overheated at abnormal overvoltage; 4, this equipment comprises a microswitch of stirring by mechanical structure, indicator circuit and main power source can be isolated.
The utility model is applied to surge protection device (spd), alternating current circuit panel protection module, power change-over switch, ac/dc distribution system, electro-optical system and mobile phone communication base station.
Accompanying drawing explanation
Below in conjunction with the embodiment in accompanying drawing, the utility model is described in further detail, but do not form any restriction of the present utility model.
Structural representation when Fig. 1 is prior art application;
Fig. 2 is structural representation of the present utility model;
Fig. 3 is the plan structure schematic diagram of Fig. 2;
Fig. 4 is the structural representation of prior art application state one;
Fig. 5 is the structural representation of prior art application state two;
Fig. 6 is the structural representation of the utility model sprung copper pin;
Fig. 7 is the plan structure schematic diagram of Fig. 6.
In figure: Zinc-oxide piezoresistor ceramics 1, upper copper pin 2, lower copper pin 3, epoxy skins 4, exposed window 41, sprung copper pin 5, welding the inner 51, elasticity Landslide Section 52, bifurcated pin 52a, tin hooks 52b, horizontal location section 53, external connection end 54, low temperature soldering-tin layer 6, low temperature soldering-tin layer 7, product fixed bin a, plastic cement cuts off slide block b.
Embodiment
Consult shown in Fig. 2～7: a kind of tripping protection type piezo-resistance of the present utility model, comprise Zinc-oxide piezoresistor ceramics 1, upper copper pin 2, lower copper pin 3, epoxy skins 4 and sprung copper pin 5, upper copper pin 2 and lower copper pin 3 are separately positioned on the upper and lower surface of Zinc-oxide piezoresistor ceramics 1, epoxy skins 4 is wrapped up body, body center institute on copper pin 2 surfaces be provided with exposed window 41, sprung copper pin 5 comprises the welding the inner 51 through being bent to form, the elasticity Landslide Section 52 on inclined-plane, horizontal location section 53 and external connection end 54, welding the inner 51 of sprung copper pin 5 is welded on upper copper pin 2 surfaces in exposed window 41 by low temperature soldering-tin layer 6, elasticity Landslide Section 52 is provided with bifurcated pin 52a, bifurcated pin 52a separates in the inner of elasticity Landslide Section 52, outer end disjunctor, formation has the inclined-plane that the gradient is greater than elasticity Landslide Section 52.
Elasticity Landslide Section 52 is made up of two-stage inclined-plane.
Welding the inner 51 of upper copper pin 2 and sprung copper pin 5 is mutually stacked, is provided with low temperature soldering-tin layer 7 and welds between upper copper pin 2 and welding the inner 51 of sprung copper pin 5.
Bifurcated pin 52a is arranged on the inner root in chopped-off head inclined-plane, disjunctor outer end at boundary broken line place, two-stage inclined-plane along the setting of chopped-off head inclined-plane, its separation the inner.
The free end of bifurcated pin approaches the lower surface of welding inner 51.
As shown in Figure 4 and Figure 5: the utility model is arranged in the product fixed bin a of tripping protection type in the time of concrete use; the plastic cement can automatic horizontal sliding is set in product fixed bin a and cuts off slide block b; plastic cement cuts off slide block b and is positioned at sprung copper pin 5 bottoms; when sprung copper pin 5 and the pad of upper copper pin 2 occur molten when disconnected; plastic cement cuts off slide block b sliding force and first touches its close bifurcated pin 52a; bifurcated pin 52a pops up sprung copper pin 5 entirety, and plastic cement partition slide block b takes advantage of a situation and injects and cover exposed window 41 forward.The rear tin that produces of pad fusing of having separated inner side at bifurcated pin 52a hooks 52b, make plastic cement cut off slide block b directly earthing bifurcated pin 52a in advance jack-up sprung copper pin 5 entirety pop up, realization prevents from producing after pad fusing tin and hooks and hinder that plastic cement cuts off slide block b and the pad of realizing automatic slip and disconnect completely copper pin upper surface and sprung copper pin, with complete turn-off current function.
In sum, the utility model is as specification and diagramatic content, makes actual sample and through repeatedly use test, from the effect of use test, provable the utility model can reach the object that it is expected, practical value is unquestionable.Above illustrated embodiment is only used for conveniently illustrating the utility model, not the utility model is done to any pro forma restriction, under any, in technical field, have and conventionally know the knowledgeable, if not departing from the scope of technical characterictic that the utility model is carried, utilize technology contents that the utility model discloses to make the local equivalent embodiment that changes or modify, and do not depart from technical characterictic content of the present utility model, all still belong in the scope of the utility model technical characterictic.
Claims (6)
1. a tripping protection type piezo-resistance, comprise Zinc-oxide piezoresistor ceramics (1), upper copper pin (2), lower copper pin (3), epoxy skins (4) and sprung copper pin (5), upper copper pin (2) and lower copper pin (3) are separately positioned on the upper and lower surface of Zinc-oxide piezoresistor ceramics (1), epoxy skins (4) parcel body, body center institute on copper pin (2) surface be provided with exposed window (41), it is characterized in that: sprung copper pin (5) comprises the welding the inner (51) through being bent to form, the elasticity Landslide Section (52) on inclined-plane, horizontal location section (53) and external connection end (54), welding the inner (51) of sprung copper pin (5) is welded on upper copper pin (2) surface in exposed window (41) by low temperature soldering-tin layer (6), elasticity Landslide Section (52) is provided with bifurcated pin (52a), bifurcated pin (52a) separates in the inner of elasticity Landslide Section (52), outer end disjunctor, formation has the inclined-plane that the gradient is greater than elasticity Landslide Section (52).
2. tripping protection type piezo-resistance according to claim 1, is characterized in that: upper copper pin (2) and lower copper pin (3) connect by high temperature scolding tin layer (7) upper and lower surface that is arranged on Zinc-oxide piezoresistor ceramics (1) respectively.
3. tripping protection type piezo-resistance according to claim 1, is characterized in that: elasticity Landslide Section (52) is made up of two-stage inclined-plane.
4. tripping protection type piezo-resistance according to claim 1; it is characterized in that: welding the inner (51) of upper copper pin (2) and sprung copper pin (5) is mutually stacked, between upper copper pin (2) and welding the inner (51) of sprung copper pin (5), be provided with the welding of low temperature soldering-tin layer.
5. tripping protection type piezo-resistance according to claim 3, is characterized in that: bifurcated pin (52a) is arranged on the inner root in chopped-off head inclined-plane, disjunctor outer end at boundary broken line place, two-stage inclined-plane along the setting of chopped-off head inclined-plane, its separation the inner.
6. tripping protection type piezo-resistance according to claim 1 or 5, is characterized in that: the free end of bifurcated pin approaches the lower surface of welding inner (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420014907.9U CN203673907U (en) | 2014-01-09 | 2014-01-09 | Cut-off protection type varistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420014907.9U CN203673907U (en) | 2014-01-09 | 2014-01-09 | Cut-off protection type varistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203673907U true CN203673907U (en) | 2014-06-25 |
Family
ID=50970174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420014907.9U Expired - Lifetime CN203673907U (en) | 2014-01-09 | 2014-01-09 | Cut-off protection type varistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203673907U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105185492A (en) * | 2015-08-24 | 2015-12-23 | 兴勤（常州）电子有限公司 | Thermal protection piezoresistor |
| TWI562180B (en) * | 2015-06-05 | 2016-12-11 | zan-qi Chen | |
| CN107958758A (en) * | 2017-12-19 | 2018-04-24 | 上海盎特电气有限公司 | A kind of fusing piezoresistor certainly |
| WO2021169046A1 (en) * | 2020-02-27 | 2021-09-02 | Dongguan Littelfuse Electronics Company Limited | Fast activation thermal fuse for short circuit current protection |
-
2014
- 2014-01-09 CN CN201420014907.9U patent/CN203673907U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI562180B (en) * | 2015-06-05 | 2016-12-11 | zan-qi Chen | |
| CN105185492A (en) * | 2015-08-24 | 2015-12-23 | 兴勤（常州）电子有限公司 | Thermal protection piezoresistor |
| CN107958758A (en) * | 2017-12-19 | 2018-04-24 | 上海盎特电气有限公司 | A kind of fusing piezoresistor certainly |
| CN107958758B (en) * | 2017-12-19 | 2024-05-14 | 上海盎特电气有限公司 | Self-fusing piezoresistor |
| WO2021169046A1 (en) * | 2020-02-27 | 2021-09-02 | Dongguan Littelfuse Electronics Company Limited | Fast activation thermal fuse for short circuit current protection |
| CN114902356A (en) * | 2020-02-27 | 2022-08-12 | 东莞令特电子有限公司 | Fast activating thermal fuse for short circuit current protection |
| CN114902356B (en) * | 2020-02-27 | 2024-05-17 | 东莞令特电子有限公司 | Fast-activated thermal fuse for short-circuit current protection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140625 |
|
| CX01 | Expiry of patent term |