CN103400730B - Protection device with over-temperature and over-current double-layer protection - Google Patents
Protection device with over-temperature and over-current double-layer protection Download PDFInfo
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- CN103400730B CN103400730B CN201310333517.8A CN201310333517A CN103400730B CN 103400730 B CN103400730 B CN 103400730B CN 201310333517 A CN201310333517 A CN 201310333517A CN 103400730 B CN103400730 B CN 103400730B
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- protection box
- thermal cutoffs
- insurance silk
- current insurance
- overcurrent
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- 239000010410 layer Substances 0.000 claims abstract description 14
- 230000001681 protective effect Effects 0.000 claims abstract description 11
- 239000011241 protective layer Substances 0.000 claims abstract description 6
- 230000001012 protector Effects 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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Abstract
The invention discloses a protection device with over-temperature and over-current double-layer protection, in particular to a double-protection element structure, which can meet the requirement of simultaneous over-temperature and over-current protection. The invention comprises a protection box, two end electrodes are arranged outside the protection box, and a circuit device of a temperature fuse and at least one current fuse is connected between the two end electrodes in series; the protective box forms a protective layer covering the chamber of the thermal fuse and the current fuse. The invention provides a double-layer protection fuse which is low in cost and convenient to install, simplifies the original circuit design, shortens the processing process of electronic circuit elements and reduces the product cost.
Description
Technical field
The present invention relates to a kind of circuit protecting element, more specifically, particularly relate to a kind of protective device structure with overtemperature and overcurrent double shielding.
Background technology
At present, in the process of circuit design, we can consider the safety protection problem of circuit, for avoiding causing danger when using or electronic product damage, all can increase as circuit protecting elements such as fuses in circuit.Usually we are mainly main according to overcurrent, but the needs that can not meet market along with the overcurrent that the appearance of polynary electrical equipment and electronic product is single are asked, and also need protection product being carried out to excess temperature, if use two protection component costs will increase a lot.
Summary of the invention
The object of the invention is, in order to overcome the deficiencies in the prior art, to provide a kind of excess temperature and over-current protecting element, particularly two protection component structure, excess temperature and overcurrent two requirements simultaneously protected can be solved.
For achieving the above object, the present invention adopts following scheme:
A kind of protective device with overtemperature and overcurrent double shielding; include a protection box; two termination electrodes are provided with outside protection box; between two termination electrodes be at least in series with an element with overheat protector, at least one has the circuit arrangement of the element of overcurrent protection; protection box-like becomes a protective layer covering the chamber of the element of overheat protector and the element of overcurrent protection; the element of overheat protector is Thermal Cutoffs, and the element of overcurrent protection is current insurance silk.
In certain embodiments, in described protection box, be formed at a heat insulation layer towards this circuit arrangement direction, in protection box, be provided with a ceramic substrate.
In certain embodiments; described Thermal Cutoffs is arranged on the heat insulation layer of protection box internal layer; current insurance silk is arranged on Thermal Cutoffs; respectively one group of current insurance silk and Thermal Cutoffs be one another in series is set along above-mentioned column direction; the current insurance silk making one group to connect and Thermal Cutoffs two ends form a termination electrode respectively; current insurance silk is connected as set of circuits device with Thermal Cutoffs, its both ends now respectively form a termination electrode.
In certain embodiments, described protection box is provided with two termination electrodes with side, or protection box both sides are respectively provided with a termination electrode; The circuit arrangement being at least in series with a Thermal Cutoffs, at least one current insurance silk between two termination electrodes, protection box-like becomes a protective layer covering the chamber of Thermal Cutoffs and current insurance silk.
In certain embodiments, the element of described overheat protector is overtemperature protector, and the element of overcurrent protection was flow fuse.
In certain embodiments, between described Thermal Cutoffs and current insurance silk, be provided with a separate layer; The current insurance silk of the set of circuits device in protection box is connected with the end of Thermal Cutoffs.
In certain embodiments, described protection box is provided with opening near the side of termination electrode, and be provided with base in the opening of protection box, termination electrode is arranged on base.
In certain embodiments, described protection box is provided with two and connects this end and be exposed to the termination electrode outside protection box chamber; Be provided with conductive electrode or pole plate, conductive electrode or pole plate one end link electrode in protection box, the other end of conductive electrode or pole plate connects Thermal Cutoffs or current insurance silk.
In certain embodiments, described protection box is provided with two and connects this end and be exposed to the termination electrode outside protection box chamber.
In certain embodiments, described current insurance silk and Thermal Cutoffs overlap up and down, and form termination electrode in protection box dual-side, or form termination electrode in protection box with side.
The invention provides a cost low, easy for installation has double shielding fuse, simplifies original circuit design.Of the present invention pair of protection component; structure is quite simple; but two kinds of protected effect can be possessed simultaneously; shared volume is much smaller than respectively by design that Thermal Cutoffs and current insurance silk are installed respectively; and installation procedure is also than installing Thermal Cutoffs respectively and current insurance silk is fast; shorten the electronic circuit component course of processing, reduce product cost.
Accompanying drawing explanation
Figure 1 shows that the schematic diagram of the embodiment of the present invention one.
Figure 2 shows that the schematic diagram of the embodiment of the present invention two.
Figure 3 shows that the schematic diagram of the embodiment of the present invention three.
Embodiment
For feature of the present invention, technological means and the specific purposes reached, function can be understood further, resolve the advantages and spirit of the present invention, by the present invention is further elaborated by the following examples.
The embodiment of the present invention one as shown in Figure 1; an element (Thermal Cutoffs 110) with overheat protector function is adopted to connect with an element (current insurance silk 120) with overcurrent protection; have withstand voltage; high anti-current; anti-lightning characteristic; can ensure that it has side's overload can cut off circuit fast from reaching the safety protecting whole circuit like this, its scope of application is: temperature range (45 degree ~ 260 degree), overcurrent limits (50mA ~ 25A).
The element of overheat protector is overtemperature protector, and the element of overcurrent protection was flow fuse.
Embodiment one comprises a protection box 130; One group comprises protection box 130 homonymy two termination electrodes 140, or two termination electrodes 140 on protection box 130 both sides, and is series at least one Thermal Cutoffs 110 between this two end, the circuit arrangement with at least one current insurance silk 120.
Protection box 130 forms the protective layer that covers the chamber of Thermal Cutoffs 110 and current insurance silk 120; And two connect this two end and are exposed to the termination electrode 140 outside protection box 130 chamber.
A heat insulation layer is formed at towards this circuit arrangement direction in protection box 130.A ceramic substrate is provided with in protection box 130.
In embodiment, between Thermal Cutoffs 110 and current insurance silk 120, be provided with a separate layer.
Thermal Cutoffs 110 is arranged on the heat insulation layer of protection box 130 internal layer; current insurance silk 120 is arranged on Thermal Cutoffs 110; respectively one group of current insurance silk be one another in series 120 and Thermal Cutoffs 110 are set along above-mentioned column direction; the current insurance silk 120 and Thermal Cutoffs 110 two ends that make one group to connect form a termination electrode 140 respectively; current insurance silk 120 is connected with Thermal Cutoffs 110 as set of circuits device; its both ends now respectively form a termination electrode 140(embodiment two, see accompanying drawing 2).
Set of circuits device in protection box 130 is not separated, and current insurance silk 120 is connected with the end of Thermal Cutoffs 110.
In embodiment three, shown in accompanying drawing 3, protection box 130 is provided with opening near the side of termination electrode 140, and be provided with base 150 in the opening of protection box 130, termination electrode 140 is arranged on base 150.Conductive electrode or pole plate 160 is provided with in protection box 130; conductive electrode or pole plate 160 one end link electrode 140; the other end of conductive electrode or pole plate 160 connects Thermal Cutoffs 110 or current insurance silk 120, and Thermal Cutoffs 110 and current insurance silk 120 form 30 ~ 70 ° of angles.
In embodiment, when above-mentioned current insurance silk 120 overlaps with Thermal Cutoffs about 110, can dystopy mutually, and form termination electrode 140(embodiment two in protection box 130 dual-side, see accompanying drawing 2), or form termination electrode 140(embodiment one in protection box 130 with side, see accompanying drawing 1), above-mentioned cascaded structure design, by the current insurance silk 120 in current distributing to single pair of protection component and Thermal Cutoffs 110, no matter when excess temperature or the arbitrary condition of overcurrent exceed specified, exceed temperature range (45 degree ~ 260 degree) overcurrent scope (50mA ~ 25A), all can force fuse short circuit wherein, and then produce rapidly the electric current blocking this circuit arrangement, reach the object of protective circuit safety.
The above embodiment only have expressed some embodiments of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as limitation of the scope of the invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with claims.
Claims (6)
1. one kind has the protective device of overtemperature and overcurrent double shielding, include protection box (130), two termination electrodes (140) are provided with outside described protection box (130), it is characterized in that, between described two termination electrodes (140) be at least in series with an element with overheat protector, at least one has the circuit arrangement of the element of overcurrent protection, described protection box (130) forms the protective layer that covers the chamber of the element of overheat protector and the element of overcurrent protection; The element of described overheat protector is Thermal Cutoffs (110), and the element of described overcurrent protection is current insurance silk (120);
Be formed at a heat insulation layer towards this circuit arrangement direction in described protection box (130), in described protection box (130), be provided with a ceramic substrate;
Described Thermal Cutoffs (110) is arranged on the heat insulation layer of protection box (130) internal layer, described current insurance silk (120) is arranged on Thermal Cutoffs (110), respectively one group of current insurance silk (120) be one another in series and Thermal Cutoffs (110) are set along column direction, the current insurance silk (120) making one group to connect and Thermal Cutoffs (110) two ends form a termination electrode (140) respectively, described current insurance silk (120) is connected as set of circuits device with Thermal Cutoffs (110), its both ends now respectively form a termination electrode (140).
2. a kind of protective device with overtemperature and overcurrent double shielding according to claim 1, it is characterized in that, described protection box (130) is provided with two termination electrodes (140) with side, or protection box (130) both sides are respectively provided with a termination electrode (140); The circuit arrangement being at least in series with a Thermal Cutoffs (110), at least one current insurance silk (120) between described two termination electrodes (140), described protection box (130) forms the protective layer that covers the chamber of Thermal Cutoffs (110) and current insurance silk (120).
3. a kind of protective device with overtemperature and overcurrent double shielding according to claim 1; it is characterized in that; be provided with a separate layer between described Thermal Cutoffs (110) and current insurance silk (120), the current insurance silk (120) of the set of circuits device in described protection box (130) is connected with the end of Thermal Cutoffs (110).
4. a kind of protective device with overtemperature and overcurrent double shielding according to claim 1; it is characterized in that; described protection box (130) is provided with opening near the side of termination electrode (140); be provided with base (150) in the opening of described protection box (130), described termination electrode (140) is arranged on base (150).
5. a kind of protective device with overtemperature and overcurrent double shielding according to claim 1, it is characterized in that, described protection box (130) is provided with two and connects this end and be exposed to the termination electrode (140) outside protection box (130) chamber; Conductive electrode or pole plate (160) is provided with in described protection box (130); described conductive electrode or pole plate (160) one end link electrode (140), the other end of described conductive electrode or pole plate (160) connects Thermal Cutoffs (110) or current insurance silk (120).
6. a kind of protective device with overtemperature and overcurrent double shielding according to claim 1; it is characterized in that; described current insurance silk (120) and Thermal Cutoffs (110) overlap up and down; described protection box (130) dual-side forms termination electrode (140), or forms termination electrode (140) in protection box (130) with side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310333517.8A CN103400730B (en) | 2013-08-02 | 2013-08-02 | Protection device with over-temperature and over-current double-layer protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310333517.8A CN103400730B (en) | 2013-08-02 | 2013-08-02 | Protection device with over-temperature and over-current double-layer protection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103400730A CN103400730A (en) | 2013-11-20 |
| CN103400730B true CN103400730B (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310333517.8A Active CN103400730B (en) | 2013-08-02 | 2013-08-02 | Protection device with over-temperature and over-current double-layer protection |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107134757A (en) * | 2016-02-29 | 2017-09-05 | 比亚迪股份有限公司 | Battery protecting apparatus and power supply module |
| CN107346718A (en) * | 2017-08-16 | 2017-11-14 | 苏州达晶微电子有限公司 | A kind of surface mount overtemperature and overcurrent protection device |
| CN107833709A (en) * | 2017-09-21 | 2018-03-23 | 苏州达晶微电子有限公司 | A kind of surface mount fusing resistor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2293130Y (en) * | 1997-01-27 | 1998-09-30 | 张吉雄 | Safety adapter socket |
| CN2335259Y (en) * | 1998-04-22 | 1999-08-25 | 致伸实业股份有限公司 | Electric circuit load protector |
| CN102013368A (en) * | 2010-10-08 | 2011-04-13 | Aem科技(苏州)股份有限公司 | Fuse with built-in thermal-protective coating and manufacture process thereof |
| CN203386702U (en) * | 2013-08-02 | 2014-01-08 | 东莞市贝特电子科技股份有限公司 | Protective device with over-temperature and over-current double protection |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0721887A (en) * | 1993-06-30 | 1995-01-24 | Nec Kansai Ltd | Composite fuse |
| JP2001210208A (en) * | 2000-01-25 | 2001-08-03 | Uchihashi Estec Co Ltd | Thermal protector |
-
2013
- 2013-08-02 CN CN201310333517.8A patent/CN103400730B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2293130Y (en) * | 1997-01-27 | 1998-09-30 | 张吉雄 | Safety adapter socket |
| CN2335259Y (en) * | 1998-04-22 | 1999-08-25 | 致伸实业股份有限公司 | Electric circuit load protector |
| CN102013368A (en) * | 2010-10-08 | 2011-04-13 | Aem科技(苏州)股份有限公司 | Fuse with built-in thermal-protective coating and manufacture process thereof |
| CN203386702U (en) * | 2013-08-02 | 2014-01-08 | 东莞市贝特电子科技股份有限公司 | Protective device with over-temperature and over-current double protection |
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| Publication number | Publication date |
|---|---|
| CN103400730A (en) | 2013-11-20 |
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