CN1032088A - Protector - Google Patents
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- CN1032088A CN1032088A CN 87106425 CN87106425A CN1032088A CN 1032088 A CN1032088 A CN 1032088A CN 87106425 CN87106425 CN 87106425 CN 87106425 A CN87106425 A CN 87106425A CN 1032088 A CN1032088 A CN 1032088A
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- protector
- fuse
- contact spring
- fuse panel
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Abstract
The present invention is relevant to be used to prevent the small-sized protective device of heating purposes such as miniature motor that heating machine such as hair drier and electric washer etc. use; be the excessive temperature protection part of having assembled the overcurrent protection part of utilizing bimetal leaf and having utilized the temperature fuse link, make the device of circuit disconnection with this double security device.
Description
The present invention relates to be used for preventing the isohyperthermic small-sized protector of miniature motor, above-mentioned motor is used for hair drier, heating machine such as food containers drying machine or electric washer, electric gate valve etc.The double security device that raises circuit is disconnected because of overcurrent and environment temperature is housed in this protector, and this device can prevent that overcurrent and temperature are too high, and can correctly set the operating temperature of protector.
In the past, this small-sized protector was to use bimetallic or fuse separately.
For example use bimetallic have following several.
1. contact spring self is to make of bimetallic material, and this is as at the special public clear 55-6971 of Japan Patent, 51-5704, disclose on the 51-18069 communique like that.
2. relatively contact spring adds bimetallic with roughly becoming parastate, and this is as at the special public clear 56-31694 of Japan Patent, and that narrates on the real public clear 58-40505 communique is such.
3. accompany the conversion bimetal leaf between the base of fixed contact spring and contact spring, this is as narrating at the real public clear 58-46512 communique of the special public clear 59-22332 of Japan Patent.
4. in addition,, spring material is fixed, used as temperature fuse as the useful resin of on the real public clear 58-38512 communique of Japan Patent, being narrated for using fuse.
Yet for the occasion 1 of making contact spring with bimetallic material, the setting of operate time when operating temperature in the normal current and overcurrent, the bimetallic operating temperature during usually by the zero load electric current of suitable selection is also tried to achieve with experiment.But because of the influence of the joule heating of flowing through electric current in the bimetal leaf, the numerical value that both's operate time in the time of be operating temperature when the normal current and overcurrent sets hope for is difficult.
In addition, on the occasion 2 of additional bi-metal construction on the contact spring, because of bimetal leaf and contact spring are riveted on the base jointly, so when riveting, make bimetallic be subjected to pre-stress.And, this pre-stress sets confusion reigned because of making temperature.For the goods that are taken as substandard products in checking operation are regenerated, also must remove riveting portion transposing bimetallic, therefore inconvenient.
In addition, there is not the variation of temperature characterisitic as described above in the occasion 3 for adopting without the conversion bimetal leaf of riveted joint stop, and changes bimetallic problem.Yet, when the effective stroke when conversion is little, causes contact chatter, and produce the bad shortcoming of action.
And,,, the correct fusing-off temperature of setting is had any problem owing to allow the resin fusing need the time as the occasion 4 of temperature fuse for resin fixed contact material.In addition, in the occasion that makes fuse blows with unborn overcurrent,, thereby can not be used in the purpose that the protection machine does not make its temperature rise owing to fuse can not melt because of the rising of environment temperature.
In sum, because of there being above-mentioned these shortcomings can not be satisfactory.And all can only be used for cutting off overcurrent or prevent the purpose that excessive temperature raises, and can not be used to cut off overcurrent simultaneously and prevent that excessive temperature from rising.Particularly in the occasion of dual metal type, because of the damage of bimetal leaf, or contact deposited etc. and can not cut off overcurrent, thereby the example of machine damage takes place time and again.
The present patent application people has developed the protector that includes double security device previously, and it is made up of the protector parts of the dual metal type that utilizes the conversion bimetal leaf and the fuse unit parts of double as resistive element.But, therefore to make difficulty of the relative overcurrent correct operation of bimetal leaf here because the bimetallic that is utilized is to move according to being arranged on the rising of leaving the locational resistive element temperature of bimetal leaf.Again owing to, be necessary to allow resistive element heating quantitative change big, there is the problem of the fusing-off temperature that is difficult to correctly to set the fuse unit parts in order to make bimetal leaf action.
Therefore, in order to make bimetal leaf correct operation under the temperature of setting arbitrarily, electric current is directly flow through on bimetallic, and make the heating that causes because of overcurrent directly pass to bimetal leaf.In addition; when the deposited or bimetal leaf damage because of electrical contact makes the protector akinesia; accomplish that open circuit reaches the protection purpose; then in advance should be not being heating because of overcurrent, but the fuse that fuses because of the rising of environment temperature to be assembled in the protector be desirable.As long as fuse can be fused because of the rising of environment temperature, just is easy to correctly set its fusing-off temperature.
Therefore; In order to address the above problem; ,サザサササùササササィピㄈ⒂ㄈòㄈùサǎササ⑼üサ４サ『ピ⑷Ｒ
Embodiment
Below with reference to the accompanying drawings the embodiment according to protector of the present invention is described,
Fig. 1 is the sectional drawing along Fig. 2 A-A line, Fig. 2 is the sectional drawing along Figure 1B-B line, Fig. 3 is the sectional drawing of expression conversion bimetal leaf operate condition, Fig. 4 is failure to actuate for expression conversion bimetal leaf, and the sectional drawing of temperature fuse link blown state, Fig. 5 is the plane graph of a contact spring, and Fig. 6 is a plane graph of conversion bimetal leaf.1 is protector outer casing, and 2 is base, and 3 is dual metal type protector part, and 4 is the fuse unit part.Base 2 be heat insulator is made tabular, can use the pottery as this heat-resistant insulation material.On the ends that installation part 5 is arranged on above the base 2, fixed contact 6 is arranged on its other end.
Dual metal type protector part 3 is made of contact spring 7 and conversion bimetal leaf 8. Contact spring 7 is made of the higher elastomeric material of resistance. For example can use stainless steel, spring steel, siderochrome, nichrome etc. Use the higher material of resistance to be owing to will cause rapidly the contact spring heating. Form moving contact 9 on the position, top of contact spring 7, its other end be arranged to the installation portion 5 that is positioned at base 2 on upper terminal 10 be conducted. And to make the relative fixed contact 6 of moving contact 9 possibilities and open and close. Central part at contact spring 7 forms the overhang 11 of giving prominence to base 2 on one side. And, form breach 12 in the both sides of this overhang 11. This notch part 12 is for by regulating the width of protuberance 11, adjusts the resistance of protuberance 11, thereby caloric value is set on the arbitrary value.
In the middle part of base 2, in order to make the top and following well-ventilated of base 2, and bigbore through hole 13 is set. In addition, will change bimetallic 8 and make the curvulate shallow disc shape of above-below direction, and to make its high expansion rate on one side and the protuberance 11 of contact spring 7 contact, and face this open-work 13 and be installed in base 2 above. The conversion bimetal leaf as shown in Figure 6, the one end has tongue piece 14, forms groove 15 at its other end, it should be provided on the base 2 like this, makes exactly in the notch part 16 of tongue piece 14 inserted bases 2, groove 15 is hooked on be embedded on the pin 17 in the base 2.
Fuse unit is partly 4 by fixing fuse panel 18, movable fuse panel 19, and make deposited deposited parts 20 formations of fuse panel 18,19 with the temperature fuse link, and be provided in base 2 below.Fixedly fuse panel 18 and movable fuse panel 19 are to constitute with the lower elastomeric material of resistance.For example can use phosphor bronze sheet, beryllium copper plate, zinc white copper coin, alloy sheets such as copper one titanium etc.Using low fixedly fuse panel of resistance 18 and movable fuse panel 19, is that will to make the heating on fixing molten device plate 18 and movable fuse panel 19 be minimum, thereby makes the fusing of the melt-coating part 20 of temperature fuse link only be subjected to the influence of environment temperature.The fixed part 21 and the fixed contact 6 of movable fuse panel 19 are conducted, and give it and desire to leave the fixedly elasticity of fuse panel 18 directions.Because fuse unit partly 4 purpose is to be used to guarantee partly 3 safety when being failure to actuate occasion of dual metal type protector, the temperature fuse link should use can be than the operating temperature of conversion bimetal leaf 8 high some temperature make the fuse link of its fusing.In order to make the reaction of the 20 pairs of environment temperatures of melt-coating part responsive, wish it is installed on the position in the face of through hole 13.
Contact spring 7 and fixing fuse panel 18, movable fuse panel 19 and fixed contact 6 can be installed in respectively on the base, also can distinguish like that as shown in the figure, form with rivet 22,23 and to be fixed on integratedly on the base 2.Because in this occasion, contact spring 7 and fixedly fuse panel 18 be necessary insulation, thereby by insulated tube 24, and be fixed with rivet 22.In addition, with rivet 22 fixedly the time, with the upper terminal 10 of contact spring 7 one sides and fixedly the lower terminal 25 of fuse panel one side clamp that simultaneously and fix.Owing to be necessary to make movable fuse panel 19 and fixed contact 6 conductings,, promptly there is no need to carry out again conducting and handle as using the rivet 23 of conductivity.
So, protector of the present invention is installed on the machine, lead 26 is connected on upper terminal 10 and the lower terminal 25, electric current is flow through.At usual state, electric current is by the sequential flow mistake of fuse panel 18 → lower terminal 25 of upper terminal 10 → contact spring 7 → moving contact 9 → fixed contact 6 → movable fuse panel 19 → melt-coating part 20 → fixedly.Yet, because contact spring 7 usefulness protuberances 11 and change bimetal leaf 8 and contact, so, change bimetal leaf 8 and be heated and make because of the heating of protuberance 11.In peacetime state, even owing to the conversion bimetal leaf is heated, but because be below the operating temperature of bimetal leaf, so bimetal leaf is failure to actuate.
In the flow through occasion in loop of overcurrent, contact spring 7 also becomes has overcurrent to flow through, and makes the heating of protuberance 11 also become big.Therefore be heated to its operating temperature when above when changing bimetal leaf one, bimetal leaf is action just, moving contact 9 is left from fixed contact 6, thereby circuit is disconnected, because conversion bimetal leaf 8 self does not have electric current to flow through, and is simple so select the operating temperature and the caused heating temp of overcurrent of bimetal leaf arbitrarily.
In addition, because of certain reason, for example changing bimetal leaf 8 damages, or moving contact 9 and fixed contact 6 are deposited, even make conversion bimetal leaf 8 be heated to it more than the operating temperature, the occasion that circuit does not still disconnect, then the safety device of fuse unit part 4 just works.Be exactly, when environment temperature one rises, fuse unit is the temperature fuse link fusing of 4 melt-coating part 20 partly, and movable fuse panel 19 leaves from fixing fuse panel 18, makes the circuit disconnection.
As mentioned above; if adopt the protector according to this invention; because contact spring is adopted the higher material of resistance ratio; making electric current pass through this contact spring generates heat; thereby heating conversion bimetal leaf, thereby have can be simply and correctly the heating-up temperature of bimetal leaf is set for the effect of arbitrary temp. In addition, by the adjustment to contact spring protuberance width; Make the resistance variations of protuberance, thereby can adjust the heating-up temperature of bimetal leaf. And because fuse unit fixedly fuse panel and movable fuse panel partly adopted low electrical resistant material, partly do not generate heat at this. Because the impact that the environment temperature that only is subjected to the temperature fuse link rises, thereby have and effectively to prevent the effect that temperature rise is too high.
Simple declaration to accompanying drawing.
1 is housing, and 2 is base, and 3 is double-metal sheet type protector part; 4 is the fuse unit part, and 5 is installation portion, and 6 is fixed contact; 7 is contact spring, and 8 are the conversion bimetal leaf, and 9 is moving contact; 10 is upper terminal, and 11 is protuberance, and 12 is notch part; 13 is through hole, and 14 is tongue piece, and 15 is groove; 16 is notch part, and 17 is pin, and 18 are fixing fuse panel; 19 is movable fuse panel; 20 is melt-coating part, and 21 is fixed part, 22; 23 is rivet; 24 is insulated tube, and 25 is lower terminal, and 26 is electric wire.
Claims (15)
1; a kind of protector; it is characterized in that this protector comprises by dual metal type protector part and fuse unit part; the dual metal type protector partly; comprise the contact spring that constitutes with the higher elastomeric material of resistance; the top ends of contact spring is as moving contact; the other end of contact spring is installed on the base of insulating properties; so that moving contact is become can be disconnected or closure the relative fixed contact; form towards the side-prominent protuberance of base in contact spring central authorities vicinity; meanwhile; one conversion bimetal leaf is between contact spring and base; and for a side of its high expansion rate and the protuberance of contact spring are contacted; and the conversion bimetal leaf may be installed on the base with moving; fuse unit fixedly fuse panel and movable fuse panel partly made by the lower elastomeric material of resistance; enable fixing fuse panel and movable fuse panel with the temperature fuse link deposited and be installed on the above-mentioned base; on movable fuse panel, give and desire to make it, meanwhile make fixedly fuse panel or movably an end and the said fixing contact of fuse panel are conducted from the elastic force that fixing fuse panel leaves.
2, protector according to claim 1 is characterized in that forming notch part in the both sides of contact spring protuberance.
3, protector according to claim 1 is characterized in that the contact spring material is a stainless steel.
4,, it is characterized in that the contact spring material is a spring steel according to the described protector of fleing of claim 1.
5, protector according to claim 1 is characterized in that the contact spring material is a ferrochrome.
6, protector according to claim 1 is characterized in that the contact spring material is a nichrome.
7, protector according to claim 1 is characterized in that fixedly Po lifts the Tartar turbid of sneering of the sledge river which rises in the northeastern part of Anhui Province of waiting till
8, protector according to claim 1 is characterized in that fixedly fuse panel is the beryllium copper plate.
9, protector according to claim 1 is characterized in that fixedly fuse panel is a packfong.
10, protector according to claim 1 is characterized in that fixedly fuse panel is copper, titanium alloy plate.
11, protector according to claim 1 is characterized in that movable fuse panel is a phosphor bronze.
12, protector according to claim 1 is characterized in that movable fuse panel is the beryllium copper plate.
13, protector according to claim 1 is characterized in that movable fuse panel is a packfong.
14, protector according to claim 1 is characterized in that movable fuse panel is copper, titanium alloy plate.
15, protector according to claim 1; it is characterized in that on base, wearing through hole; face respectively under the state of this open-work at the fixedly fuse panel of conversion bimetal leaf that makes dual metal type protector part and fuse unit part and the deposited part of movable fuse panel, dual metal type protector part and fuse unit partly are installed on two faces of base subtend.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87106425 CN1032088A (en) | 1987-09-18 | 1987-09-18 | Protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87106425 CN1032088A (en) | 1987-09-18 | 1987-09-18 | Protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1032088A true CN1032088A (en) | 1989-03-29 |
Family
ID=4815697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87106425 Pending CN1032088A (en) | 1987-09-18 | 1987-09-18 | Protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1032088A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100353649C (en) * | 2002-12-13 | 2007-12-05 | 乐金电子(天津)电器有限公司 | Anti-overheating device for induction motor |
| CN100414660C (en) * | 2005-04-07 | 2008-08-27 | 游聪谋 | Circuit protector with dual temperature power-off induction |
| CN101288142B (en) * | 2005-10-14 | 2010-12-01 | 打矢恒温器株式会社 | Temperature switch |
| CN101728120B (en) * | 2008-10-21 | 2011-09-28 | 游聪谋 | Dual temperature sensing cutoff circuit protective device |
| CN103578850B (en) * | 2013-11-08 | 2015-11-18 | 南京海川电子有限公司 | Protector for electric machine |
| CN111527660A (en) * | 2018-08-31 | 2020-08-11 | 株式会社Lg化学 | Fuse control system and method using defect mode detection |
-
1987
- 1987-09-18 CN CN 87106425 patent/CN1032088A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100353649C (en) * | 2002-12-13 | 2007-12-05 | 乐金电子(天津)电器有限公司 | Anti-overheating device for induction motor |
| CN100414660C (en) * | 2005-04-07 | 2008-08-27 | 游聪谋 | Circuit protector with dual temperature power-off induction |
| CN101288142B (en) * | 2005-10-14 | 2010-12-01 | 打矢恒温器株式会社 | Temperature switch |
| CN101728120B (en) * | 2008-10-21 | 2011-09-28 | 游聪谋 | Dual temperature sensing cutoff circuit protective device |
| CN103578850B (en) * | 2013-11-08 | 2015-11-18 | 南京海川电子有限公司 | Protector for electric machine |
| CN111527660A (en) * | 2018-08-31 | 2020-08-11 | 株式会社Lg化学 | Fuse control system and method using defect mode detection |
| CN111527660B (en) * | 2018-08-31 | 2023-07-28 | 株式会社Lg新能源 | Fuse control system and method using defect mode detection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |