CN2431638Y

CN2431638Y - Switch structure

Info

Publication number: CN2431638Y
Application number: CN 99249222
Authority: CN
Inventors: 陈俊旭
Original assignee: 游聪谋
Priority date: 1999-10-22
Filing date: 1999-10-22
Publication date: 2001-05-23
Anticipated expiration: 2009-10-22

Abstract

The utility model belongs to the field of electric appliances. A braking mechanism which is composed of an alloy piece and a swing device is mainly arranged in the utility model, wherein the swing device is connected with a motion part; when pushed, the motion part can be linked with the swing device to move; when the alloy piece is overheated because of the current overload, the alloy piece can be bent and deformed towards the motion part to push the motion part to be disengaged from the support of the barrier part of a switch body; thus, the swing device can swing towards an original closing position, an elastic contact piece is relieved from the press of the swing device to push upwards; at the same time, two connection points which communicate electric loops are disengaged, and the purposes of quick reaction, power dump and safe electricity use are realized.

Description

Construction of switch

The utility model belongs to the electric equipment products field, refers in particular to a kind of with simple structure and the action to swing, the construction of switch that can cut off the electricity supply rapidly when making current overload.

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 is to propose a kind of construction of switch of being made up of Switch main body, switch lid, contact spring, pendulous device, alloy piece, elastic contact chip, not only actuating length is fast for it, and simple in structure, thereby solved the existing in prior technology problem.

The technical solution adopted in the utility model is that it includes: a Switch main body, a switch lid, a contact spring, a pendulous device, an alloy piece, an elastic contact chip; This Switch main body is provided with fixed leg, stopper, in conjunction with contact spring, pendulous device, disposes alloy piece, elastic contact chip by the switch lid, and common combination forms in Switch main body, it is characterized in that:

This pendulous device, the one end is provided with elliptical slot in order to combine and to be swung with the set fixed leg of Switch main body, which is provided with a perforation, and it is linked to the switch lid by a pole, the other end is provided with a rotatable operating member, and this operating member end in addition is provided with a tail end;

This alloy piece, it is fixed in the Switch main body, and its top is butted on the operating member tail end that pendulous device is connected with;

When because of current overload when overheated, this alloy piece will be toward the flexural deformation of operating member direction, pushing action portion breaks away from replacing of the set stopper of Switch main body and supports and drop downwards, pendulous device is able to swing to original switch (OFF) position, make elastic contact chip break away from by pendulous device compacting state and the pushing tow that make progress, make the two point escape of connection 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 stopper and a fixed leg in inner appropriate location, 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 pendulous device, the one end is provided with elliptical slot in order to combine and to be swung with the set fixed leg of Switch main body, which is provided with a perforation is linked to the switch lid by a pole pole hole, end is provided with an axis hole in addition, this pendulous device is provided with a rotatable operating member, in addition end is provided with a tail end, and this tail end extends one, and to replace its lower edge face of sheet be the stopper upper side that is buckled in Switch main body;

Said alloy piece is to be fixed in the Switch main body, and its top is butted on the operating member tail end that pendulous device is connected with;

Said elastic contact chip, it is corresponding with the following contact of second contact terminal that it is combined with a upper contact, and this elastic contact chip is across first and second contact terminal top.

Advantage of the present utility model is, can automatically reply into the state that preparation is opened under the situation of current overload, and actuating length is fast and simple in structure, can not produce misoperation.

Fig. 1 is a three-dimensional exploded view of the present utility model.

Fig. 2 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. 3 is a cutaway view of the present utility model, and it shows the situation of switch opens of the present utility model (ON).

Fig. 4 is the local mechanics schematic diagram of Fig. 3.

Fig. 5 is a cutaway view of the present utility model, and it shows the action schematic diagram of the utility model when current overload.

Fig. 6 is the local mechanics schematic diagram of Fig. 4.

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

One switch lid 10 is formed in conjunction with a switch base 20, 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 combined into switch lid 10, and can make switch lid 10 do the push action of two directions 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, be as the current-limiting resistance of being located at the neon lamp 14 in the switch lid 10, as the light demonstration of switch opens (ON), 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 spring 30, the one end is to wear into aforementioned perforation 25 to contact with Chip-R 24, the other end is bent with a hook portion 31 hooks and invests the 3rd contact terminal 47, and this contact spring 30 is the power of upspringing as switch lid 10 and as the electric binding of a branch connecting pin of neon lamp 14.

One Switch main body 40, it is the hollow housing of a tool opening 41, be arranged with a stopper 42 (as shown in Figure 2) and a fixed leg 43 in the appropriate location of inner walls, the opening 41 on its top is to spread out to connect switch lid 10, the bottom is provided with several slots 44, spreads out respectively to connect first, second and

third contact terminal

45,46 and 47.

One pendulous device 60, the one end is provided with elliptical slot 63 in order to combine and can swing with the set fixed leg 43 of Switch main body 40, is formed with a protuberance 64 in the bottom, which is provided with a perforation 62, be linked to the pole hole 27 of switch lid 10 by a pole 65, the other end is provided with an axis hole 61;

This pendulous device 60 is provided with an operating member 50, as shown in Figure 2, these operating member 50 1 ends are provided with a rotating shaft 52 and are incorporated into axis hole 61, and end is provided with a tail end 51 in addition, this tail end 51 has extended one and has replaced sheet 511, and its lower edge face is shelves portion 42 upper sides that are butted on Switch main body 40.

In addition, this

pendulous device

60 and 50 of its operating members that is connected with are provided with a flexible member 66, and the back stretch of operating member 50 in pendulous device 60 actions is provided.

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, this elastic contact chip 70 is incorporated into a pin of alloy piece 80 by holder 81 and conjunction (rivet) 82, and elastic contact chip 70 is across first and

second contact terminal

45,46 tops.

One alloy piece 80 generally is the Jiong shape, is incorporated on first contact terminal 45 by holder 81 and conjunction (rivet) 82, and the top of alloy piece 80 is butted on the tail end 51 of operating member 50.

In addition, the top of second contact terminal 46 is provided with contact 461, 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, and it shows that switch of the present utility model cuts out the situation of (OFF), or this switch situation is to be operated by the user; When the user presses switch lid 10 to right-hand member, this contact spring 30 will be upheld with this action, making switch lid 10 serves as the axle action that turns clockwise with fulcrum 21, making pole hole 27 is that the axle center clockwise direction is done circular motion (in present embodiment for left) with fulcrum 21 also, and interlock pole 65 upper end homodromous movements, the perforation 62 of pole 65 lower end interlock pendulous devices 60 an and end of pendulous device 60 is pulled upwardly, protuberance 64 is no longer exerted pressure to the boss portion 71 of the elastic contact chip 70 below it, 70 press powers because of disengaging pendulous device 60 of this elastic contact chip pop up, upper contact 73 is separated with following contact 461, first contact terminal 45 and second contact terminal 46 are opened circuit, and the feed lines of cutting off the electricity supply.14 of neon lamps are extinguished, for closing (OFF) state because of the input of second contact terminal, 46 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, this contact spring 30 will be pressed down distortion, making switch lid 10 is that the axle center is rotated counterclockwise action with fulcrum 21, making pole hole 27 is that circular motion (in present embodiment for to the right) is counterclockwise done in the axle center with fulcrum 21 also, and interlock pole 65 upper ends in the same way (to the lower right to) action, the perforation 62 of pole 65 lower end interlock pendulous devices 60 an and end of pendulous device 60 is pressed down, boss portion 71 contacts of 64 pairs of elastic contact chips 70 of protuberance press down, the contact 73 of elastic contact chip 70 bottom surfaces is contacted with the following contact 461 of second contact terminal 46, extraneous electric current promptly by first contact terminal 45 through alloy piece 80, elastic contact chip 70, upper contact 73, following contact 461 to second contact terminals 46, and constitute a complete electric loop, for opening (ON) state.

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 47 through Chip-R 24, contact spring 30, constitutes electric loop and shinny, with display switch opened (ON).

As shown in Figure 4, when the state of switch opens (ON), contact spring 30 is to be to be pressed distortion, store and reply the elastic force 301 of upwards upholding, yet because it 25 is the point of application to bore a hole, fulcrum 21 is the axle center, perforation 25 to fulcrum 21 distances are the arm of force, the moment 302 that is produced is that the summit connects fulcrum 21 and bore a hole with pole hole 27 62 is the angle 303 on both sides, its angle is slightly larger than 180 degree, cooperate the upwards power of (oppositely) of elastic contact chip 70 to hold up the top and be balance, can be positioning states so open (ON) state of switch lid 10.

And the swinging up and down with upright oval slotted eye 63 of pendulous device 60, the upper and lower relatively fixed leg 43 that slides on is shown in Fig. 2,3,5.

What must point out is, when above-mentioned switch cuts out (OFF) and switch opens (ON), be all the current interruption of normal condition or connect situation, so it replaces the operating member that is connected with of this pendulous device 60 50 sheet 511 lower edge faces and all is in the state of being replaced by stopper 42 upper sides, there is no any action and produces.

As shown in Figure 5, it is a cutaway view of the present utility model, it shows that the utility model is when current overload, the action schematic diagram of escape, when electric current produces overload, this alloy piece 80 will make its perseverance to the 50 direction bendings of pendulous device 60 operating members because of the heat of current overload, the tail end 51 of pushing action portion 50 immediately, making operating member 50 is that rotate to pendulous device 60 directions in the axle center with rotating shaft 52, flexible member 66 shrinks relatively simultaneously, replace sheet 511 lower edge emaciated faces replacing and tail end 51 extends from stopper 42 upper sides, this operating member 50 drops downwards together with pendulous device 60 will lose support, operating member 50 ends (left end) that present pendulous device 60 are downward, the situation that slotted eye 63 ends make progress relatively, can't be and protuberance 64 is upwards slided to boss portion 71 to lower compression, elastic contact chip 70 can be by being pressed down the upwards ejection smoothly of the curved bounce of being accumulated, and this upper contact 73 and following contact 461 are separated and cut off the power supply.

At this moment, as shown in Figure 6, angle 303 is about 180 degree, moment 302 can overcome counter power easily, elastic force 301 upwards, if switch 10 no external force are exerted pressure, contact spring 30 will diastole, and with switch lid 10 jack-up upwards, this switch lid 10 is that the axle center dextrorotation goes to the position of closing (OFF) with fulcrum 21 promptly, as shown in Figure 2, replys the normal position and pendulous device 60 will and be pulled upwardly along with pole 64 inclinations, original state is replied in alloy piece 80 cooling backs, the operating member 50 that this pendulous device 60 is connected with makes the sheet 511 lower edge faces of replacing of operating member 50 tail ends 51 with the elastic returning of mat flexible member 66, places set stopper 42 upper sides of Switch main body 40 once more, to do the preparation of switch opens next time, as shown in Figure 2.

By above-mentioned, the utility model is by the interlock of alloy piece 80, pendulous device 60, interlock rapidly when making current overload, make elastic contact chip 70 trippings 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 has 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, a pendulous device, an alloy piece, an elastic contact chip; This Switch main body is provided with fixed leg, stopper, in conjunction with contact spring, pendulous device, disposes alloy piece, elastic contact chip by the switch lid, and common combination forms in Switch main body, it is characterized in that:

This pendulous device, the one end is provided with elliptical slot in order to combine and to be swung with the set fixed leg of Switch main body, which is provided with a perforation, and it is linked to the switch lid by a pole, the other end is provided with a rotatable operating member, and this operating member end in addition is provided with a tail end.

2, by the said construction of switch of claim 1, it is characterized in that said pendulous device, be provided with a flexible member between it and the operating member that is connected with.

3, by the said construction of switch of claim 1, it is characterized in that said operating member, its tail end has extended one and has replaced sheet, is butted on the stopper upper side of Switch main body.

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

One Switch main body, the opening on its top are to spread out to connect the switch lid, are provided with a stopper and a fixed leg in inner appropriate location, 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 pendulous device, the one end is provided with the elliptical slot in order to combine and to be swung with the set fixed leg of Switch main body, which is provided with a perforation and be linked to the pole hole of switch lid by a pole, end is provided with an axis hole in addition, this pendulous device is provided with a rotatable operating member, end is provided with a tail end in addition, and this tail end has extended one and replaced sheet, and its lower edge face is the stopper upper side that is buckled in Switch main body;

One alloy piece, it is fixed in the Switch main body, and its top is butted on the operating member tail end that pendulous device is connected with;

One elastic contact chip, it is corresponding with the following contact of second contact terminal that it is combined with a upper contact, and this elastic contact chip is across first and second contact terminal top.

5, by the said construction of switch of claim 4, it is characterized in that it includes a contact spring, it is arranged between switch lid and the Switch main body.

6, by the said construction of switch of claim 4, it is characterized in that said Switch main body, set up one the 3rd contact terminal in it.

7, by the said construction of switch of claim 4, 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 spring.

8, by the said construction of switch of claim 4, it is characterized in that said switch lid is provided with a neon lamp.

9, by the said construction of switch of claim 8, it is characterized in that said neon lamp, the one pin is to be connected in said Chip-R, is connected to the 3rd contact terminal through contact spring, and another pin is to be connected in second contact terminal by a flexible member.

10, by claim 1 or 4 said constructions of switch, it is characterized in that said alloy piece, is to be incorporated into first contact terminal.

11, by the said construction of switch of claim 4, it is characterized in that said elastic contact chip, it is to be incorporated into alloy piece.

12, by the said construction of switch of claim 4, it is characterized in that said pendulous device, be provided with a flexible member between the operating member that it and its are connected with.