CN2391302Y

CN2391302Y - Switch structure

Info

Publication number: CN2391302Y
Application number: CN 99249223
Authority: CN
Inventors: 游聪谋
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-10-22
Filing date: 1999-10-22
Publication date: 2000-08-09
Anticipated expiration: 2009-10-22

Abstract

The utility model belonging to the field of electric appliances is equipped with a braking mechanism composed of an alloy piece and a rocking contact device. The alloy piece is equipped with a motion piece with a bulging, in normal state, the upside of which props against the lower edge surface of the tail section of the rocking contact device. When the alloy piece is overheated because of the current overload, the motion piece can outward spring to disengage the tail section which downward drops off without supporting. While the head of the rocking contact device warps upwards without pressing the elastic contact piece. The elastic contact piece disengages the pressing of the rocking contact device and upward pushes by the elastic force of its own, simultaneously to make the two point communicated with the electric return circuit repel off, therefore, the goals of quick response, cutting off electric source and safety for using electricity are reached.

Description

Construction of switch

The utility model belongs to the electric equipment products field, refers in particular to a kind ofly can cut off rapidly when making current overload with simple structure with the switch of rocking action, safeguards 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, phenomenon by 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 the button escape and then the automatic structure of involution, 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 be to propose a kind of by Switch main body, switch lid, contact spring, wave the construction of switch that contact device, alloy piece and elastic contact chip are formed, it has when current overload and can cut off the electricity supply rapidly, safeguard Electrical Safety, thereby solved the existing in prior technology problem.

The technical scheme that the utility model adopted is that it includes: a Switch main body, a switch lid, a contact spring, wave contact device, an alloy piece, an elastic contact chip; This Switch main body is provided with projection, and by the switch lid in conjunction with contact spring, wave contact device, configuration alloy piece, elastic contact chip, common combination forms in Switch main body, it is characterized in that:

This one waves contact device, has a head and an afterbody, and this head is provided with slotted eye and combines and swung with the set projection of Switch main body, which is provided with a perforation, is linked to the switch lid by a pole;

This alloy piece, it is provided with the action movie of a tool protuberance, and this action movie and alloy piece are formed with suitable angle;

When because of current overload when overheated, this alloy piece will be toward shaking the flexural deformation of contact device direction, this action movie is promptly to the opposite direction tripping, this moment afterbody lose action movie protuberance support and drop, make wave contact device present head upwards, the pattern of tail down, no longer suppress elastic contact chip, make elastic contact chip to pop up smoothly, make the two point tripping that is communicated with electric loop simultaneously and cut off the power supply.

Said Switch main body, the opening on its top are to spread out to connect the switch lid, are provided with a projection in the appropriate location of inner walls, and the bottom is provided with several slots, spread out respectively to connect first, second contact terminal, and this second contact terminal also is provided with contact;

Said switch lid, it is combined with a switch base, and this switch base bottom is provided with pole hole;

Said contact flat spring is to be mounted between switch base and the switch lid, is the power of upspringing as the switch lid;

The said contact device that waves, it has a head and an afterbody, and this head is provided with slotted eye in order to the projection that is incorporated into Switch main body and swung; And being provided with a perforation, mat one pole links the pole hole of perforation and switch base bottom;

Said alloy piece is to be provided with an action movie, and this action movie and alloy piece are formed with suitable angle;

Said elastic contact chip is across first and second contact terminal top, and its bottom surface is provided with a upper contact.

Advantage of the present utility model is, when alloy piece because of current overload when overheated, action movie will outwards flick and break away from the afterbody that waves contact device, afterbody does not have support and drops downwards, and the head that waves contact device rises to upper fin and no longer suppresses in elastic contact chip, elastic contact chip is broken away from waved state that contact device suppresses can mat itself the elastic force pushing tow that makes progress, make the two point escape of interlock electric loop simultaneously, reach rapid reaction, cut off the electricity supply and aim of safe power utilization.

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

Fig. 2 is a cutaway view of the present utility model, and it shows the situation of switch opens of the present utility model (ON).

Fig. 3 is a cutaway view of the present utility model, and it shows that switch of the present utility model cuts out the situation of (OFF).

Fig. 4 is a cutaway view of the present utility model, and it shows the action schematic diagram of the utility model when current overload.

Fig. 5 is another embodiment cutaway view of the present utility model, and its display switch is opened the situation of (ON).

Fig. 6 is another embodiment cutaway view of the present utility model, and it shows the action schematic diagram of the utility model when 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 is an exploded perspective view of the present utility model, and this construction of switch includes:

One switch lid 10, it combine with a switch base 20 form, switch lid 10 surfaces are a recessed arc limit 11, the appropriate location of its both sides is provided with axis hole 12 and button hole 13, and switch base 20, the axis hole 12 and button hole 13 relative positions of itself and switch lid 10 convex with two fulcrums 21 and coak 22, use and be incorporated into switch lid 10, and can to make switch lid 10 be the push action that two directions are made in the axle center with fulcrum 21, these switch base 20 1 sides are provided with a resistor block 23, be to embed a Chip-R 24 in it, it is as the current-limiting resistance of being located at the neon lamp 14 in the switch lid 10, light as switch opens (ON) shows, and the both sides of this resistor block 23 respectively are provided with a perforation 25.These switch base 20 bottom sides also are provided with triangular plate 26, are provided with pole hole 27 in triangular plate 26.

One contact flat spring 30, the one end is to wear into above-mentioned perforation 25 to contact with Chip-R 24, the other end is bent with the 3rd contact terminal 56 that a hook portion 31 hooks invest Switch main body 50, is the power of upspringing as switch lid 10 and as the electric binding of a branch connecting pin of neon lamp 14.

One waves contact device 40, it is that head 41 from broad forms an afterbody 42 to the opposite side convergent, be provided with an elliptical slot 411 and a perforation 412 in head 41, this waves contact device 40 is that mat elliptical slot 411 is incorporated into the set projection 51 of Switch main body 50, and mat one pole 43 links the pole hole 27 of perforation 412 and switch base 20 bottoms, make wave contact device 40 can be along with the push action interlock of switch lid 10.In addition, the bottom of this head 41 is provided with a protuberance 413.

One Switch main body 50 is the hollow housings that are a tool opening 52, and the opening 52 on its top is to spread out to connect switch lid 10, and the bottom is provided with a plurality of slots 53, and spreading out respectively connects first, second and

third contact terminal

54,55 and 56.

One alloy piece 60 generally is the Jiong shape, and its central authorities are provided with the action movie 61 of a bottom tool protuberance 62, and this action movie 61 forms suitable angle with alloy piece 60.

One elastic contact chip 70, its end face appropriate location is provided with a boss portion 71, front end is provided with a contact hole 72, and by the bottom surface in conjunction with a upper contact 73.

Described elastic contact chip 70 is incorporated into a pin of alloy piece 60 by holder 63 and rivet 64, and another pin of alloy piece 60 is fixed on first contact terminal 54, and makes elastic contact chip 70 be across first and

second contact terminal

54,55 tops.

In addition, the top of second contact terminal 55 is provided with contact 551, and links an elastic conductive component (spring) 15 another branch connecting pin to neon lamp 14 is arranged, and makes neon lamp 14 constitute a complete electric loop.

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), or this switch situation is by user's off switch voluntarily, when the user presses switch lid 10, this contact spring 30 will the diastole with this action, and because of switch lid 10 and switch base 20 are combined as a whole, making switch lid 10 is that the axle center turns clockwise with fulcrum 21, making pole hole 27 is that the axle center is done clockwise direction rotation and done circular motion (in present embodiment for left) with fulcrum 21 also, and motion pole 43 upper ends are waved the head 41 of contact device 40 and are pulled upwardly to the left action, the compacting that 70 of this elastic contact chips wave contact device 40 because of nothing pops up, upper contact 73 is separated with following contact 551, first contact terminal 54 and second contact terminal 55 are opened circuit, and the feed lines of cutting off the electricity supply.14 of neon lamps are extinguished because of the input of second contact terminal, 55 non-transformers.

As shown in Figure 3, it is a cutaway view of the present utility model, it shows the situation of switch opens of the present utility model (ON), when the user presses switch lid 10 left ends, contact spring 30 will be pressed down distortion, and because of switch lid 10 and switch base 20 are combined as a whole, making switch lid 10 is that the axle center is rotated counterclockwise action with fulcrum 21, making pole hole 27 is that rotation is counterclockwise done in the axle center with fulcrum 21 also, do circular motion (in present embodiment for to the right), and the direction action to left down of interlock pole 43 upper ends, it is downward to wave contact device 40 heads 41 interlocks, be connected to protuberance 62 upper sides of action movie 61 simultaneously because of the afterbody 42 lower edge faces that wave contact device 40, its protuberance 413 will be that the axle center rotates downwards with afterbody 42, compeling to support boss portion 71 suppresses elastic contact chip 70 downwards, the upper contact 73 of elastic contact chip 70 bottom surfaces is contacted with the following contact 551 of second contact terminal 55, extraneous electric current promptly by first contact terminal 54 through alloy piece 60, elastic contact chip 70, upper contact 73, following contact 551 to second contact terminals 55, and constitute a complete electric loop.

After above-mentioned electric loop is communicated with, electric current promptly conducts to a pin of neon lamp 14 through elastic conductive component (spring) 15, another pin of this neon lamp 14 is to be connected to the 3rd contact terminal 56 through Chip-R 24, contact spring leaf 30, constitute electric loop and shinny, with display switch opened (ON).

And wave swinging up and down of contact device 40 is with oval slotted eye 411, and the upper and lower relatively projection 51 that slides on is shown in Fig. 2,3,4.

What must point out is that when closing (OFF) and switch opens (ON) in aforementioned switches, the afterbody 42 lower edge faces of this pendulous device 40 all are the upper sides that are connected to the protuberance 62 of action movie 61, there is no any action and produce.

As shown in Figure 4, it is a cut-away view of the present utility model, it shows the action schematic diagram of the utility model when current overload, when electric current produces overload, this alloy piece 60 will be because of the overheated generation strain of current overload, to waving contact device 40 direction bendings, this action movie 61 is promptly to the opposite direction tripping, afterbody 42 loses the support of protuberance 62 upper sides and drops at this moment, make and wave contact device 40 and present head 41 upwards, the pattern that afterbody 42 is downward, protuberance 413 is no longer suppressed boss portion 71, makes elastic contact chip 70 to pop up smoothly, and this upper contact 73 and following contact 551 are that escape is separated and cut off the power supply.

At this moment, if switch lid 10 no external force are exerted pressure, contact flat spring 30 will diastole, and with switch lid 10 jack-up upwards, this switch lid 10 is that the axle center is docile and obedient hour hands and is rotated to the position of closing (OFF) with fulcrum 21 promptly, as shown in Figure 2, waving the afterbody 42 of contact device 40 does and will make progress along with pole 43 and be pulled upwardly, this moment, circuit was an off state, alloy piece 60 and action movie 61 will cool off gradually and reply original normal condition, and promptly action movie 61 will rebound to left, and the afterbody 42 that waves contact device 40 buckles into protuberance 62 upper sides that are butted on action movie 61 once more, to do the preparation of switch opens next time, as shown in Figure 2.

Again as shown in Figure 5, it is another embodiment cutaway view of the utility model, present embodiment mainly provide another kind of pattern wave contact device 40 '.This wave contact device 40 ' head 41 ' and protuberance 413 ', the other end be extend upward be bent to form an afterbody 42 '.In present embodiment, this alloy piece 60 ' generally be Jiong shape, this afterbody 42 ' be butted on alloy piece 60 ' last top.

As shown in Figure 6, in this embodiment, when alloy piece 60 ' because of the overheated generation strain of current overload, will be crooked to waving contact device 40 ' opposite direction, make afterbody 42 ' lose alloy piece 61 ' go up the support on top and drop, wave contact device 40 ' present head 41 ' upwards, afterbody 42 ' downward pattern, protuberance 413 ' no longer suppress boss portion 71, make elastic contact chip 70 ejection that can make progress smoothly, this upper contact 73 and following contact 551 are that escape is separated and cut off the power supply.

By above-mentioned, the utility model is by the interlock that waves contact device 40 (or 40 ') and alloy piece 60 (or 60 '), can make elastic contact chip 70 escapes rapidly when making current overload and cut off the power supply, and can under the current overload situation, automatically reply into the state that preparation is opened, actuating length is fast and simple in structure, can not produce misoperation, really have practical function.

Below the utility model being done one describes in detail; but it is above said; it only is 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 and modification etc., all should still belong to the protection range of the utility model claim.

Claims

1, a kind of construction of switch includes: a Switch main body, a switch lid, a contact spring leaf, wave contact device, an alloy piece, an elastic contact chip; This Switch main body is provided with projection, and by the switch lid in conjunction with contact flat spring, wave contact device, configuration alloy piece, elastic contact chip, common combination forms in Switch main body, it is characterized in that:

This waves contact device, has a head and an afterbody, and this head is provided with slotted eye and combines and swung with the set projection of Switch main body, which is provided with a perforation, is linked to the switch lid by a pole;

This alloy piece, it is provided with an action movie with protuberance, and this action movie and alloy piece are formed with suitable angle.

2, a kind of construction of switch is characterized in that, it includes:

One Switch main body, the opening on its top are to spread out to connect the switch lid, are provided with a projection in the appropriate location of inner walls, and the bottom is provided with several slots, spread out respectively to connect first, second contact terminal, and this second contact terminal also is provided with contact;

One switch lid, it is combined with a switch base, and this switch base bottom is provided with pole hole;

One contact flat spring, it is mounted between switch base and the switch lid;

One waves contact device, and it has a head and an afterbody, and this head is provided with in order to projection that is incorporated into Switch main body and the slotted eye swung; And be provided with a perforation, link the pole hole of perforation and switch base bottom by a pole;

One alloy piece is to be provided with an action movie, and this action movie and alloy piece are formed with suitable angle;

One elastic contact chip is across first and second contact terminal top, and its bottom surface is provided with a upper contact.

3, by the said construction of switch of claim 2, it is characterized in that said action movie is provided with a protuberance.

4, a kind of construction of switch is characterized in that, it includes:

One contact flat spring, it is mounted between switch base and the switch lid;

One is heated the alloy piece of perseverance to side distortion;

One waves contact device, and it has a head and an afterbody, and this head is provided with projection that can be incorporated into Switch main body and the slotted eye of being swung; This swing controlling device is provided with a perforation, and by the pole hole of pole binding perforation and switch base bottom, this afterbody is from the upwards bending extension of head opposite side, is connected to the last top of alloy piece;

One elastic contact chip is across first and second contact terminal top, and its bottom surface is provided with a upper contact, and is corresponding with the following contact of second contact terminal.

5, by claim 2 or 4 said constructions of switch, it is characterized in that said switch base, the one side convexes with a resistor block, in it is to embed a Chip-R, and this Chip-R contacts with contact flat spring.

6, by claim 2 or 4 said constructions of switch, it is characterized in that said switch lid, be provided with a neon lamp in it.

7, by the said construction of switch of claim 6, it is characterized in that said neon lamp, the one pin is connected in Chip-R, is connected to the 3rd contact terminal through contact flat spring, and another pin is to be connected in second contact terminal by an elastic conductive component.

8, by claim 2 or 4 said constructions of switch, it is characterized in that the said contact device that waves, the bottom of its head is provided with a protuberance.

9, by claim 2 or 4 said constructions of switch, it is characterized in that said elastic contact chip, which is provided with one with the corresponding boss of said protuberance portion.