CN2428861Y - Switch structure - Google Patents

Abstract

The utility model relates to a switch structure which belongs to the electric appliance and is a control mechanism mainly composed of an alloy metallic piece and a contact control element, wherein, the alloy metallic piece is in the slightly inverted U shape and has the functions of conducting current and being a dialing piece; the contact control element is provided with an elastic member and combined with a tail part which can transversally move to and fro relatively to the contact control element. An elastic contact piece can be quickly broken when the current is overloaded, so the utility model can cut off the electric power and can automatically recover to the preparing to open state; the utility model has the advantages of quick action route, simple structure and no wrong action, and consequently can reach the purpose of saving electric power.

Description

Construction of switch

The utility model belongs to the electric equipment products field, refers in particular to a kind of reaching with simple structure and dials the promotion work, can cut off the electricity supply rapidly when making current overload and safeguard the construction of switch of Electrical Safety.

General mains switch only has out and closes two kinds of actuating lengths, manually control by the people fully, but in the unstable area of power supply, the time have the situation of overload to take place, the people can't find this phenomenon and continue and use this moment, will cause overload overheated, caused electric wire to cock off even the public danger of fire, form the use potential hazard of switch, therefore the further improvement of switch is just arranged.

Switch after the improvement, inside is provided with one by the two or more metal alloys that metal material constituted, nationality is by the phenomenon of its overheated generation distortion, cut off the electricity supply and when overload, automatically spring open, case is too numerous to enumerate before the patent of relevant this kind construction of switch, as United States Patent (USP) No. 5786742, No. 5223813, No. 4937548, No. 4661667, No. 5223813, No. 4931762, No. 5451729, No. 4704594 etc.

For instance, exposing an a kind of lever and cam action of utilizing alloy sheet, to be subjected to the alloy sheet action in No. the 4937548th, U.S. matches with the seesaw type actuator, be communicated with electric two point and contact and separate and make, and when the alloy sheet temperature distortion, make the lever displacement, and the forfeiture of cam action part is supported, and then escape outage.Because the reaction of current overload is directly to occur in alloy sheet, and case mat alloy sheet action lever, cam action part take the indirect mode action conducting strip that constitutes with the seesaw type actuator before this, the separating reaction of contact is slow, can't immediate response, the electric current of overload still can flow into electrical equipment by contact in a flash, still has the situation that causes the electrical equipment damage.In addition, also need to purchase separately electric wire between conducting strip and alloy sheet and be connected, cause complex structure to be difficult for the shortcoming of making, and alloy sheet undertakes the task of seesaw type actuator and lever escape of moving simultaneously, the possibility of misoperation is probably arranged.

Before above-mentioned in the case, utilize the overheating deforming of alloy sheet to promote limit base as No. 5786742 announcement, make button escape and then automatically reset structure, but since its button direct action on contact, the time still can make contact connect and cause danger in overload, and complex structure.So, though these preceding cases can solve the overheated electricity consumption danger of overload, shortcomings such as these preceding cases responded slowly, complex structure, still ideal and remain further to be improved again not to the utmost.

The purpose of this utility model is to propose a kind of construction of switch of being made up of shift knob, Switch main body, flexible member, alloy piece, touch controls element and elastic contact chip, it has this elastic contact chip pushing tow that can make progress by the elastic force of itself, make two to be communicated with the contact escape of power supply, can reach rapid reaction, cut off the electricity supply and the characteristics of Electrical Safety, thereby solve the existing in prior technology problem.

The technical scheme that the utility model adopted is that it includes: a shift knob, a Switch main body, a flexible member, an alloy piece, a touch controls element, the one end is provided with operating member, the other end is equipped with an elastic component and an afterbody, and this afterbody is the free end that props up this alloy piece; By the controlling organization that comprises that described alloy piece and touch controls element are constituted; Said shift knob is in conjunction with this flexible member, and this elastic contact chip of cooperation what, according to its annexation position this Switch main body of common combination what, its feature is at what: this alloy piece, generally be inverted U-shaped, it is current paths that the one end has several legs, and the other end is reclinate free end, this free end produces strain when current overload, can be used as the pushing sheet;

When current overload and alloy piece is crossed the afterbody of thermal strain pushing and pressing touch controls element, drive the action of touch controls element, make elastic contact chip jump and cut off the power supply.

The stopper that the interior sidewall surface of the said Switch main body of the utility model is convexly equipped with, its top forms circular-arc, and the support end lower edge face of the afterbody of cooperation touch controls element is circular-arc; Said Switch main body is provided with positioning convex rod.

Advantage of the present utility model is, it is by having the conducting electric current concurrently and dialling the alloy piece of push jack function and the action of the brake mechanism that the touch controls element is constituted, can make the elastic contact chip escape rapidly when making current overload and cut off the power supply, and can automatically reply into the state that preparation is opened, actuating length is fast and simple in structure, can not produce misoperation and Electrical Safety.

Fig. 1 is an exploded perspective view of the present utility model.

Fig. 2 closes the cutaway view of (OFF) situation for showing switch of the present utility model.

Fig. 3 is for showing the cutaway view of switch opens of the present utility model (ON) situation.

Fig. 4 is for showing the cutaway view of the action signal of the utility model when current overload.

Fig. 5 is the cutaway view of the action signal when showing the utility model current overload.

Further specify preferred embodiment of the present utility model in conjunction with above-mentioned each accompanying drawing now, as shown in Figure 1, it includes:

One shift knob 10, upper surface are a recessed edge, and the below is provided with fulcrum 11 in the middle of its dual-side, and the bottom side is provided with triangular plate 12, is provided with pole hole 13 in triangular plate 12.

One Switch main body 20, it is an ostiolate hollow housing, and the opening 21 on its top spreads out to connect to organize and establishes shift knob 10, is provided with several slots 24 in the bottom surface, first and second contact terminal 25,26 of pegging graft respectively, the top of this second contact terminal 26 is provided with contact 261; In addition, the interior sidewall surface of this Switch main body 20 convexes with circular-arc stopper 22, positioning convex rod 23, column 27 and the fixed leg 28 of top one-tenth respectively.

One flexible member 30, one end are mounted on the left sides in the shift knob 10, and the other end then is fixed in the set fixed leg 28 of Switch main body 20.

One alloy piece 40 generally is inverted U-shaped, and two legs of one end are current paths, and wherein a leg connects first contact terminal 25, and another leg connects elastic contact chip 60 bottoms, and the other end is reclinate free end 41.One touch controls element 50, the one end is provided with and slightly becomes upright elliptoid operating member 51, its inside offers an oval-shaped hollow hole 511, use touch controls element 50 is assembled in the set column 27 of Switch main body 20, touch controls element 50 other ends are provided with shrinkage pool 54, near the relative projection 55 of each Duan Youyi of end face upper and lower surface, be equiped with an elastic component (coil tension spring) 56 in the hole, front end sleeve one shape such as bullet and the part 57 of rushing to summit of hollow, be connected with again in conjunction with an afterbody 58, the outer end of this afterbody 58 is that the bottom surface slightly is circular-arc support end 582, its lower edge face is butted on the stopper 22 nose-circle cambered surfaces that are convexly equipped with in the Switch main body 20, afterbody is provided with the elongate slot 581 that runs through in both sides about in the of 58, is combined in described projection 55, and is combined as a whole with touch controls element 50; The side of this touch controls element 50 is provided with a perforation 52 in addition, flexibly connects a pole 53, and the upper end of pole 53 is passed and the movable pole hole 13 that is combined in shift knob 10 belows, with 10 one-tenth one serial verb constructions of shift knob.

Above-mentioned this afterbody 58 can mat coil tension spring 56 elastic force and the track that slides for front and back of elongated hole 581, be able to relative touch controls element 50 bodies and do reciprocal contraction, uphold interlock.

One elastic contact chip 60, its front end are provided with a contact hole 61, and by the bottom surface in conjunction with a upper contact 62.

Described elastic contact chip 60 is pin that are incorporated into alloy piece 40 by holder 42 and rivet 43, and another pin of alloy piece 40 is fixed on first contact terminal 25, and makes elastic contact chip 60 be across first and second contact terminal 25,26 tops.

Switch motion stroke of the present utility model includes and closes (OFF), jumps electricity when opening (ON) and current overload, below will do detailed explanation:

As shown in Figure 2, it is a cutaway view of the present utility model, it shows that switch of the present utility model cuts out the situation of (OFF), this situation of closing is meant the off switch voluntarily by the user, when the user presses shift knob 10 right-hand members, this flexible member 30 will be with this action diastole that makes progress, simultaneously shift knob 10 is the axle center action that turns clockwise with fulcrum 11, making pole hole 13 is that clockwise circular motion (in present embodiment for left) is done in the axle center with fulcrum 11 also, and move to the upper left side interlock pole 53 upper ends, pole 53 lower ends are pulled upwardly the operating member 51 of touch controls element 50,60 of this elastic contact chips pop up because of the compacting that loses operating member 51, upper contact 62 is separated with following contact 261 escapes, and first contact terminal 25 and second contact terminal 26 promptly are the feed lines that opens circuit and cut off the electricity supply.

As shown in Figure 3, it is the cutaway view of present embodiment, it shows the situation of switch opens of the present utility model (ON), when the user presses shift knob 10 left ends, this flexible member 30 will be pressed down distortion, and shift knob 10 is that the axle center is rotated counterclockwise action with fulcrum 11, making pole hole 13 is that anticlockwise circular motion (in present embodiment for to the right) is done in the axle center with fulcrum 11 also, and interlock pole 53 upper ends press down touch controls element 50 to the lower right action, its operating member 51 promptly resists elastic contact chip 60 downwards, the upper contact 62 of elastic contact chip 60 bottom surfaces is contacted with the following contact 261 of second contact terminal 26, extraneous electric power promptly by first contact terminal 25 via alloy shell fragment 40, elastic contact chip 60, upper contact 62, following contact 261 to second contact terminals 26, and constitute a complete electric loop.

What point out especially is: when above-mentioned switch cut out (OFF) and switch opens (ON), the support end 582 of this afterbody 58 was the nose-circle cambered surfaces that are butted on the set stopper 22 of Switch main body 20, there is no any action and produced.

As shown in Figure 4 and Figure 5, the cutaway view that shows present embodiment respectively, it shows the action schematic diagram of the utility model when current overload, when electric current produces overload, alloy piece 40 will make free end 41 generation strain perseverances stretch (being to the body outside among this embodiment) to a direction because of the heat of current overload, promote the support end 582 of afterbody 58, this afterbody 58 is subjected to this thrust and makes support end 582 break away from replacing of stopper 22 nose-circle cambered surfaces to the contraction of touch controls element 50 body directions, afterbody 58 loses the support of stopper 22 together with touch controls element 50 right-hand members and drops downwards, and touch controls element 50 left end operating members 51 are that the axle center rotation makes progress relatively with shrinkage pool 52, make that elastic contact chip 60 can be along upwards and upwards ejections of operating member 51, this upper contact 62 and following contact 261 are separated and cut off the power supply.

The positioning convex column 23 of this Switch main body 20 is when outwards upholding as free end 41 strains of alloy piece 40, and it upholds the qualified point of angle, avoids producing elastic fatigue and can't replying because excessively uphold.

In addition, after this afterbody 58 dropped downwards, the elastic component (coil tension spring) 56 in this touch controls element 50 was upheld immediately, and it is sincere in afterbody 58 to replace part 57 tops of rushing to summit, and makes afterbody 58 reply the state of original outside extension.

At this moment, shift knob 10 left ends are exerted pressure as if no external force, flexible member 30 diastole that will make progress, and with the shift knob 10 left ends jack-up that makes progress, this shift knob 10 is that the axle center is docile and obedient clockwise and is rotated to the position of closing (OFF) with fulcrum 11 promptly, as shown in Figure 2, this touch controls element 50 is promptly by pole 53 pull-ups, the shape of reset condition is replied in alloy piece 40 cooling backs, the support end 582 lower edge faces of this afterbody 58 are butted on the upper end arc surface of stopper 22 once more, be that switch cuts out the state of (OFF), as shown in Figure 2, as the preparation of opening (ON) next time.

From the above mentioned, the utility model is by having the conducting electric current concurrently and dialling the alloy piece 40 of push jack function and the action of the brake mechanism that touch controls element 50 is constituted, can make elastic contact chip 60 escapes rapidly when making current overload and cut off the power supply, and can automatically reply into the state that preparation is opened, actuating length is fast and simple in structure, can not produce misoperation.Therefore, the utility model and have practicality.

Below the utility model being done one describes in detail; but above said only be preferred embodiment of the present utility model; when not limiting the scope that the utility model is implemented; be all variations of being done according to the utility model claim scope or modification etc., all should still belong to the scope of the utility model claim protection.

Claims (3)

1, a kind of construction of switch, it includes: a shift knob, a Switch main body, a flexible member, an alloy piece, a touch controls element, the one end is provided with operating member, and the other end is equipped with one and plays a member and an afterbody, and this afterbody is the free end that props up this nuclear sheet metal; By the controlling organization that comprises that described alloy piece and touch controls element are constituted; Said shift knob is in conjunction with this flexible member, and cooperates this elastic contact chip of what, and according to its annexation position this Switch main body of common combination what, its feature is at what:

It is inverted U-shaped that this alloy piece generally is, and it is current paths that the one end has several legs, and the other end is reclinate free end, and this free end produces strain when current overload, can be used as the pushing sheet.

2, as the said a kind of construction of switch of claim 1, it is characterized in that: the stopper that the interior sidewall surface of said Switch main body is convexly equipped with, its top end face becomes circular-arc, and the support end lower edge face of the afterbody of cooperation touch controls element is circular-arc.

As the said construction of switch of claim 1, it is characterized in that 3, said Switch main body is provided with positioning convex rod.

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