CN201638771U - Double-pole automatic power off type safety switch - Google Patents

Abstract

The utility model discloses a double-pole automatic power off type safety switch which is mainly characterized in that a shell is provided with a button; one end of the button is provided with a first linkage part and a second linkage part which are extended into the shell, additionally, a first electric conduction pin group and a second electric conduction pin group which are respectively formed by a plurality of electric conduction pins are penetrated through the inside and the outside of the shell; a bimetallic strip capable of being bent and deformed by heating is arranged between two electric conduction pins of the first electric conduction pin group, and jointed with an arc-shaped swing elastic sheet; the swing elastic sheet is propped against and contacted with a clamping and holding sheet capable of defecting elastically; an electric conduction elastic sheet with elasticity is arranged between two electric conduction pins of the second electric conduction pin group, and an elastic stirring sheet is pivoted beside the electric conduction elastic sheet, and linked with the electric conduction elastic sheet by an elastic member, and can form clamping by the clamping and holding sheet at proper time; and a first linkage piece is pivoted between the first linkage part and the bimetallic strip, and a second linkage piece is pivoted between the second linkage part and the elastic stirring sheet.

Description

Bipolar auto-cut-off type safety switch

Technical field

The utility model relates to a kind of bipolar auto-cut-off type safety switch, and is especially a kind of except that can cutting off the electricity supply when transship in default loop, but and the safety switch construction of its associated loop power supply of turned off in synchronization.

Background technology

At present general more common Electrical Safety safeguard measure, it all is a restriction of device current device between power circuit and electrical equipment, as: fuse or circuit breaker, when electric current is excessive, to cut off electric current, but because fuse must be changed after blowing at every turn, very inconvenience in the use, be eliminated gradually, circuit breaker is then because complicated on the structure, and cost an arm and a leg, therefore be not suitable on each circuit or the power end of each electrical equipment uses simultaneously, and conventional circuit breaker be set, also complexity too on the construction of its installation and the relevant circuit at each feeder ear, therefore, general circuit breaker all is to make bigger current specification, and circuit breaker of the Line sharing that several electric currents are less, makes the sensitivity of its circuit breaker can't satisfy the demand for security of the electric appliance circuits of various different rated current; Simultaneously, this feeder ear with several loops is concentrated and is shared a circuit breaker, to limit the structure of its overall load electric current, when if this circuit breaker has the overload outage, and can't correctly learn the electrical equipment of this overload or the loop of short circuit immediately, detect with the time and must spend spirit separately, can learn above-mentioned message, this is the thing of difficulty very for not having a people of electrician's knowledge.

For this reason; tool limits the switching device of electric current as shown in Figure 1; it mainly is to be provided with button 71 housing 7 top sides; inside one end of this button 71 is provided with a double-action plate 711; and button 71 bottoms are embedded with conductive connecting pin 72; 73; this conductive connecting pin 72; be arranged with fixed contact 731 and a bimetal leaf 721 on 73; and the other end of bimetal leaf 721 extends to the top of fixed contact 731; and be connected by a shell fragment 74 that is fixed in housing 7 inwalls; and bimetal leaf 721 is provided with a movable contact 722 directly over aforementioned fixation contact 731; and the end of this bimetal leaf 721 is connected with the lower end of double-action plate 711 again; when button 71 is down suppressed bimetal leaf 721 via double-action plate 711; movable contact 722 is contacted and via bimetal leaf 721 conducting pins 72 with fixed contact 731; 73; when power supply in when overload; borrow bimetal leaf 721 temperature distortions and make shell fragment 74 influenced by its varicose and pop up; make the double-action plate 711 of its connection be pushed away and move up; button 71 escapes are resetted; if its setting is incorporated on the electric power loop of general electric equipment; automatically escape is cut off the electricity supply and is protected this electric equipment; yet; because the button 71 in the said structure is the structural relation of direct pivot knot with double-action plate 711; if when in circuit, continuing to have overload or situation of short circuit; and general user is non-again to be had under the knowledge of professional electricity consumption; that then will have no vigilance pushes retry to it once more; at this moment; because double-action plate 711 directly is subjected to button 71 interlocks and supports pressure downwards; under no any safeguard measure; very likely cause the possibility that causes the high heat of spark when pushing; make the user be in the state of murther; and cause the damage of electrical installation; can't meet the safeguard measure on the present European Electrical Safety standard, this is the improvement direction that is worth thinking.

For improving above-mentioned disappearance, No. the 454937th, the TaiWan, China patent announcement that the utility model designer has " construction of switch of power outage security automatically ", it is pivoted with a pressing body in the housing of a switch, and the bottom side of housing is provided with a plurality of conductive connecting pins respectively in regular turn, one of them conductive connecting pin top is provided with a bimetal leaf that extends to another conductive connecting pin, be provided with a hook groove and a hook portion in this bimetal leaf extending end, this hook groove is connected with an end of pressing body mutually via a toggle link device, this hook portion then is connected mutually with a swing shell fragment, on inner walls, and its stage casing is provided with a top that protrudes out to this swing shell fragment with other end inlay card; Make this toggle link device can with pressing body push and this bimetal leaf of interlock be contacted with another conductive connecting pin and form conducting; be maintained bimetal leaf press force up or down by this swing shell fragment; when overload or short-circuit condition; this bimetal leaf temperature distortion and break away from another conductive connecting pin; with the supply of cutting off the electricity supply; push this swing shell fragment simultaneously; make its top be pushed against the toggle link device and produce flexion; make this pressing body drive this bimetal leaf via the toggle link device again; state to keep escape to open circuit before overload improves forms a circuit overloads protective effect that safety is perfect.

Yet; in many application scenarios; often having a plurality of different attached electricity consumption loops must depend under the main electricity consumption loop powers (promptly when stop power supply in this main electricity consumption loop; must cut off the power supply in each attached electricity consumption loop simultaneously) situation; but above-mentioned various protection switch with overload power down function does not all have the structure and the function of this synchronous outage; having not enough and disappearance in application, is a direction that can supply relevant dealer to make great efforts.

Because existing overload outage safety switch has above-mentioned shortcoming, the utility model has generation of the present utility model finally at the road of those shortcoming research improvement.

Summary of the invention

Main purpose of the present utility model is to provide a kind of bipolar auto-cut-off type safety switch, when it produces overload or short circuit at a main current supply circuit, can cut off the power supply of relevant attached current supply circuit simultaneously, so as to reaching the safe effect of synchronous outage control.

Another purpose of the present utility model is to provide a kind of bipolar auto-cut-off type safety switch, and it all keeps the elasticity of a contact between each contact, and the impact in the time of can effectively avoiding the action of each contact and cause wearing and tearing is to prolong its useful life.

Another purpose of the present utility model is to provide a kind of bipolar auto-cut-off type safety switch, it needs button is pushed back to the open-circuit position under off-position, can push this button conducting current supply circuit again, so as to avoiding under overload or the situation do not got rid of of short circuit factor, unexpected false touch takes place and cause the danger of conducting.

For solving the problems of the technologies described above, the technical scheme of the bipolar auto-cut-off type safety switch of the utility model is, comprise: a housing, inside has an accommodation space, be respectively equipped with a back and forth button of beat in this housing table side, and two by in the accommodation space to outside protrude out first, two conductive connecting pin groups, this is first years old, two conductive connecting pin groups are made up of first to fourth conductive connecting pin respectively, and in of this button distolateral be provided with two in accommodation space, protrude out first, two linkage part, and this first, two linkage part are driven first respectively, two moving parts form the interlock of unidirectional complications; The bimetal leaf of a heated bending distortion, be located in the accommodation space of housing, the one end is incorporated on first conductive connecting pin of this first conductive connecting pin group, the other end then is a movable end, this movable end extends to the second conductive connecting pin side of the first conductive connecting pin group, and forms conflict with this first moving part; A swing shell fragment, be an arc-shaped bend, the one end is hubbed at the accommodation space inwall of this housing, the other end then is engaged in the movable end of this bimetal leaf, be provided with a top in this swing shell fragment stage casing, can be subjected to the action of this bimetal leaf and push against, make itself and first linkage part form complications in this first moving part; An electroconductive elastic sheet is a flexible conducting strip of tool, and the one end is incorporated on the 3rd conductive connecting pin of this second conductive connecting pin group, and its other end is a movable end then, and extends to the 4th conductive connecting pin place near the second conductive connecting pin group; An elastic plectrum, be located at this electroconductive elastic sheet side, the one end is hubbed in the housing, the other end then forms one with an elastic parts with electroconductive elastic sheet and is connected, and this elastic plectrum and this swing shell fragment forms an interlock, and the movable end that makes this electroconductive elastic sheet with the action that cooperates this bimetal leaf and the 4th conductive connecting pin of the second conductive connecting pin group form and contact or separate.

According to said structure, wherein this inner walls face is pivoted with one and fastens catch, and this side that fastens catch extends to the position that is contacted at this swing shell fragment, and another side that fastens catch then extends to and is able to the position of clip in this elastic plectrum.

According to said structure, wherein this fastens catch and contacts at the inner walls face by the shell fragment that opens of a bending, and makes this fasten the elasticity that catch keeps perk in accommodation space.

Description of drawings

Below in conjunction with drawings and Examples the utility model is described in further detail:

Fig. 1 is a kind of existing switching device structure chart with restriction function of current;

Fig. 2 is a structure decomposition map of the present utility model;

Fig. 3 is a three-dimensional combination section of the present utility model;

Fig. 4 is a plane of the present utility model combination section;

Fig. 5 is the turn-on action figure of the utility model first conductive connecting pin group;

Fig. 6 is the turn-on action figure of the utility model second conductive connecting pin group;

Fig. 7 is the open circuit action diagram of the utility model first conductive connecting pin group when transshipping;

Repeated presses action schematic diagram when Fig. 8 does not reset after overload for the utility model;

Fig. 9 is the key position schematic diagram of the utility model behind free escape and when not resetting;

Figure 10 be the utility model behind overload trip, replacement action and key position schematic diagram before restarting.

Reference numeral is among the figure,

1,7..... housing

11.... accommodation space

12,71.... button

121... first linkage part

122... second linkage part

13.... the first conductive connecting pin group

131... first conductive connecting pin

132... second conductive connecting pin

133... bimetallic elasticity guide card

134,1521,731.. fixed contact

135... block pin

14.... support seat

141... elastic plectrum

142... by the top

15.... the second conductive connecting pin group

151... the 3rd conductive connecting pin

152... the 4th conductive connecting pin

16.... recess

17.... open shell fragment

171... fasten catch

18.... miniature shell fragment

2,721... bimetal leaf

21,52,722... movable contact

22.... hook portion

23.... draw-in groove

3..... swing shell fragment

31.... protuberance

32.... hollow-out parts

33.... top

4..... first moving part

42.... clip slot

44,64.... pin connected assembly

45,65.... elasticity of torsion assembly

5..... electroconductive elastic sheet

51.... elastic parts

6..... second moving part

62.... replace recess

711... double-action plate

72,73.... conductive connecting pin

74.... shell fragment

Embodiment

Extremely shown in Figure 10 as Fig. 2, obviously can find out, the utility model mainly comprises: housing 1, bimetal leaf 2, swing shell fragment 3, first, two moving parts 4,6 and electroconductive elastic sheet 5 etc. partly, wherein this housing 1 inside has an accommodation space 11, be respectively equipped with a back and forth button 12 of beat in this housing 1 table side, and two by in the accommodation space to outside protrude out first, two conductive connecting pin groups 13,14, one of this button 12 distolaterally is provided with first, two linkage part 121,122 protrude out in accommodation space 11, and this first conductive connecting pin group 13 is by first, two conductive connecting pins 131,132 form, the individual bimetallic elasticity guide card 133 of lateral junction unification on this second conductive connecting pin 132 with fixed contact 134, be provided with a block pin 135 in these bimetallic elasticity guide card 133 stage casing sides, and this second conductive connecting pin group 15 is by the 3rd, four conductive connecting pins 151,152 form, be provided with a fixed contact 1521 in the 4th conductive connecting pin 152 inner ends, the 3rd conductive connecting pin 151 then crosses at the 4th conductive connecting pin 152 end sides, be respectively equipped with one in addition in these accommodation space 11 inboards and support seat 14, recess 16 and one open shell fragment 17, this supports seat 14 fixing with the combination of one end for the elastic plectrum 141 of a horizontal expansion, the other end in this elastic plectrum 141 is provided with one by top 142, this opens the offside that shell fragment 17 is arranged at this support seat 14, and can support one and fasten catch 171 elastic deflections, to fasten opportune moment in by top 142, and can form clip to elastic plectrum 141, bimetal leaf 2 has the characteristic of heated bending distortion, the one end is incorporated on first conductive connecting pin 131 of this first conductive connecting pin group 13, the other end then is one to be provided with the movable end of hook portion 22, may extend to this bimetallic elasticity guide card 133 tops, be provided with a movable contact 21 corresponding to fixed contact 134 in this movable end, and be provided with a draw-in groove 23 in these movable contact 21 sides, swing shell fragment 3 is an arc bending, the one end is provided with protuberance 31, can stretch in the recess 16 on accommodation space 11 inwalls, swing shell fragment 3 other ends then are provided with a hollow-out parts 32, the hook portion 22 that can be sleeved on this bimetal leaf 2 forms a linking, be provided with the top 33 of a bifurcated in these swing shell fragment 3 stage casings, electroconductive elastic sheet 5 is a flexible conducting strip of tool, the one end is incorporated into the 3rd conductive connecting pin 151 stage casings of the second conductive connecting pin group 15, the other end then is a movable end and extends to the 4th conductive connecting pin 152 sides, movable end in this electroconductive elastic sheet 5 is provided with a movable contact 52 corresponding to fixed contact 1521, and in electroconductive elastic sheet 5 stage casings and this elastic plectrum 141 by top 142 between be provided with an elastic parts 51, first moving part 4 is plates, its top side is connected in this first linkage part 121 via the pin connected assembly 44 of a U-shaped, and this pin connected assembly 44 also can wear an elasticity of torsion assembly 45, so that this first linkage part 121 forms the pivot joint that can unidirectionally bend with moving part 4, and be provided with a clip slot 42 in first moving part, 4 bottom sides, but chuck forms an interlock that is difficult for getting loose in the draw-in groove 23 of this bimetal leaf 2, second moving part 6 also is plates, its top side is connected in this second linkage part 122 via the pin connected assembly 64 of a U-shaped, and this pin connected assembly 64 also can wear an elasticity of torsion assembly 65, so that this second connects the pivot joint that of linkage part 122 and 6 formation of second moving part can unidirectional bendings, replace recess 62 and be provided with one, can be resisted against and form an interlock on this elastic plectrum 141 in second moving part, 6 bottom sides.

During use, when this button 12 presses down, can be via first, two linkage part 121,122 drive respectively this first, two moving parts 4,6, wherein this first linkage part 121 movable contact 21 that can drive this bimetal leaf 2 descends and contacts conducting (as shown in Figure 5 with fixed contact 134, but omitted second conductive connecting pin group 15 and the associated component thereof in the diagram), this swing shell fragment 3 is subjected to bimetal leaf 2 interlocks and by this first moving part 4 of top 33 ejections simultaneously, make 121 of this first moving part 4 and first linkage part form skew, so as to removing the compacting of 121 pairs of bimetal leafs 2 of this first linkage part, be arranged on the bimetallic elasticity guide card 133 owing to this fixed contact 134 in addition, therefore these two contacts are when contact, just can keep an elasticity therebetween, remove and to guarantee stability in contact, also can reduce the impact in when contact, cause wearing and tearing between each contact to avoid excessive active force; And in the 4 stressed declines of first moving part, second moving part 6 also descends synchronously and oppresses this elastic plectrum 141, utilize this elastic plectrum 141 via these electroconductive elastic sheet 5 downward beats of elastic parts 51 interlocks, make the conducting that contacts of its movable contact 52 and corresponding fixed contact 1521, and this fastens the resiliency supported that catch 171 is opened shell fragment 17, but block is resisted against by on the top 142, so that this elastic plectrum 141 (driving electroconductive elastic sheet 5) remains in the conduction position (as shown in Figure 6, having omitted first conductive connecting pin group 13 and the associated component thereof in the diagram) of downward beat.

If when having overload condition to take place, then big electric current causes bimetal leaf 2 by meeting, bimetallic elasticity guide card 133 generates heat and flexural deformation (as shown in Figure 7), crooked simultaneously bimetallic elasticity guide card 133 can promote this bimetal leaf 2, making it quicken to play tilting does, this block pin 135 then can limit the crooked amplitude of this bimetallic elasticity guide card 133, and this bimetal leaf 2 also can drive this swing shell fragment 3 with its this first moving part 4 of top 33 ejections, make 121 of this first moving part 4 and first linkage part form bending, the movable contact 21 that makes bimetal leaf 2 hightails this fixed contact 134 and forms and open circuit, simultaneously, this swing shell fragment 3 is also pushed and is fastened catch 171 compressing this is opened shell fragment 17 (as Fig. 8 institute, show), so that fastening catch 171, this gets loose to this replacing by top 142, and remove the clip state of this elastic plectrum 141, make this elastic plectrum 141 drive electroconductive elastic sheet 5 homings via elastic parts 51, and this movable contact 52 also breaks away from fixed contact 1521, to cut off this second conductive connecting pin group 15; At this moment; if this button 12 is in oppressed state; then only can strengthen this first and second moving part 4,6 respectively with the bending angle of this first and second linkage part 121,122; descend and can't make this first and second moving part 4,6 promote first and second linkage part 121,122; and if this button 12 is under the state of no external force pressure; then can be in a free escape position (as shown in Figure 9); whereby; disconnect defencive function to reach the double loop, to avoid the insurmountable danger of single loop switch fully.

In the said structure, can in accommodation space 11, face the off position of cutting off the electricity supply according to need and be provided with a miniature shell fragment 18 in the bottom side on one side at button 12, this miniature shell fragment 18 can resist this button 12 can't directly reach the position of cutting off the electricity supply, need oppositely to push earlier this button 12, this first and second moving part 4,6 is stretched fully with this first and second linkage part 121,122 respectively, after the pending fault problem is got rid of, what the side was able to repetition Fig. 5 depresses button 12 action (as shown in figure 10), with the power supply of this first and second conductive connecting pin group 13,15 of conducting again.

Comprehensive the above, the effect that bipolar auto-cut-off type safety switch of the present utility model really can be reached synchronous outage control and prolong the contact life-span is the creation of a tool novelty and progressive in fact; Only the content of above-mentioned explanation only be preferred embodiment explanation of the present utility model, allly complies with variation, modification, change or equivalent replacement that technological means of the present utility model and category extended, also all should fall in the patent claim of the present utility model.

Claims (12)

1. a bipolar auto-cut-off type safety switch is characterized in that, comprises at least:

A housing, inside has an accommodation space, be respectively equipped with a back and forth button of beat in this housing table side, and two by in the accommodation space to outside first and second conductive connecting pin group of protruding out, this first and second conductive connecting pin group is made up of first to fourth conductive connecting pin respectively, and distolaterally be provided with two first and second linkage part that protrude out in accommodation space in one of this button, and this first and second linkage part is driven the interlock that first and second moving part forms unidirectional complications respectively;

The bimetal leaf of a heated bending distortion, be located in the accommodation space of housing, the one end is incorporated on first conductive connecting pin of this first conductive connecting pin group, the other end then is a movable end, this movable end extends to the second conductive connecting pin side of the first conductive connecting pin group, and forms conflict with this first moving part;

A swing shell fragment, be an arc-shaped bend, the one end is hubbed at the accommodation space inwall of this housing, the other end then is engaged in the movable end of this bimetal leaf, be provided with a top in this swing shell fragment stage casing, can be subjected to the action of this bimetal leaf and push against, make itself and first linkage part form complications in this first moving part;

An electroconductive elastic sheet is a flexible conducting strip of tool, and the one end is incorporated on the 3rd conductive connecting pin of this second conductive connecting pin group, and its other end then is a movable end, and extends to the 4th conductive connecting pin place near the second conductive connecting pin group;

An elastic plectrum, be located at this electroconductive elastic sheet side, the one end is hubbed in the housing, the other end then forms one with an elastic parts with electroconductive elastic sheet and is connected, and this elastic plectrum and this swing shell fragment forms an interlock, and the movable end that makes this electroconductive elastic sheet with the action that cooperates this bimetal leaf and the 4th conductive connecting pin of the second conductive connecting pin group form and contact or separate.

2. bipolar auto-cut-off type safety switch according to claim 1, it is characterized in that, this inner walls face is pivoted with one and fastens catch, this side that fastens catch extends to the position that is contacted at this swing shell fragment, and another side that fastens catch then extends to and is able to the position of clip in this elastic plectrum.

3. bipolar auto-cut-off type safety switch according to claim 2 is characterized in that, this fastens catch and contacts at the inner walls face by the shell fragment that opens of a bending, and makes this fasten the elasticity that catch keeps perk in accommodation space.

4. according to claim 1 or 2 or 3 described bipolar auto-cut-off type safety switches, it is characterized in that first and second linkage part of this button forms a pivot joint via pin connected assembly and this first and second moving part of two U-shapeds respectively.

5. bipolar auto-cut-off type safety switch according to claim 4 is characterized in that, the other end that this first moving part and this first linkage part articulate is provided with a clip slot, forms an interlock for the movable end that is sleeved on this bimetal leaf.

6. bipolar auto-cut-off type safety switch according to claim 5 is characterized in that, this bimetal leaf is provided with one and is able to the draw-in groove that combines with this clip slot.

7. bipolar auto-cut-off type safety switch according to claim 4 is characterized in that, this second moving part end is provided with one and replaces recess, for being sleeved on this elastic plectrum.

8. according to claim 1 or 2 or 3 described bipolar auto-cut-off type safety switches, it is characterized in that second conductive connecting pin of this first conductive connecting pin group is in conjunction with a bimetallic elasticity guide card with the equidirectional extension of bimetal leaf.

9. bipolar auto-cut-off type safety switch according to claim 8, it is characterized in that, be respectively equipped with a movable contact on the movable end of this bimetal leaf and electroconductive elastic sheet, and the corresponding position on this bimetallic elasticity guide card and the 4th conductive connecting pin is provided with a fixed contact.

10. according to claim 1 or 2 or 3 described bipolar auto-cut-off type safety switches, it is characterized in that this housing is provided with a miniature shell fragment in the side inside that first and second linkage part is set away from button.

11. according to claim 1 or 2 or 3 described bipolar auto-cut-off type safety switches, it is characterized in that this housing is provided with a recess in the accommodation space inwall, this swing shell fragment then is provided with a protuberance in relative position, forms combination for inserting in this recess.

12. bipolar auto-cut-off type safety switch according to claim 4 is characterized in that this housing is provided with a recess in the accommodation space inwall, this swing shell fragment then is provided with a protuberance in relative position, forms combination for inserting in this recess.

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