CN2430782Y

CN2430782Y - Switch structure

Info

Publication number: CN2430782Y
Application number: CN 99255651
Authority: CN
Inventors: 游聪谋
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-12-10
Filing date: 1999-12-10
Publication date: 2001-05-16
Anticipated expiration: 2009-12-10

Abstract

The utility model belongs to the field of the electric appliance and is provided with a brake structure composed of a swinging body and an alloy piece, wherein, the moving part of the swinging body is assembled together with an elastic piece in the swinging body, the extending end of the moving part is exposed out of the tail end of the swinging body, and the moving part can move to and fro at the tail end in the swinging body transversely. When the alloy piece is overloaded owing to the current or superheated, the swinging body is curved and deformed to push a convex column and to push the moving part to shift outwards to separate from the support of a blocking part arranged by the switch body, so the tail end of the swinging body faces downward. The utility model enables two connecting points communicated with the loop of the electric appliance to be disconnected, and reaches the purposes of quick response to cut off the power supply and of high safety in using electricity.

Description

Construction of switch

The utility model belongs to the electric equipment products field, refers in particular to a kind of brake structure that is made of a pendular body and an alloy piece, the construction of switch of the maintenance safe electricity consumption of cutting 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 be provided with a special material metal alloy, 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. 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 shift knob, Switch main body, contact spring, pendular body, alloy piece and elastic contact chip, it is when electrical current is overheated, can make the two point escape that is communicated with electric loop, reach rapid reaction, cut off the electricity supply and the effect of Electrical Safety, thereby solved 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 contact spring, a pendular body, an alloy piece, an elastic contact chip; By the brake structure that pendular body and alloy piece constituted, shift knob cooperates elastic contact chip in conjunction with contact spring, forms in Switch main body according to its connection relationship position common combination, it is characterized in that:

This pendular body, the one end is that head is combined in the set fixed leg of Switch main body sidewall relative position, the inner group of this pendular body is provided with an operating member, this operating member is assembled in pendular body together with elastic component, the elongated end of operating member is exposed to outside the pendular body tail end, and operating member can be done horizontal reciprocating motion in pendular body inside.

The technical scheme that the utility model adopted also can be to include:

The push action of two directions about lower position is provided with fulcrum shift knob is done with fulcrum in the middle of one shift knob, its both sides; Shift knob both sides under this fulcrum have extended triangular plate downwards, are provided with pole hole in triangular plate;

One Switch main body, it is a hollow housing with opening, be arranged with one a grade of portion and a fixed leg in the appropriate location of inner walls, the opening on its top is that the linking group is established shift knob, the bottom is provided with several slots, be connected first, second contact terminal respectively, first contact terminal links alloy piece and is communicated with conducting strip, is to be combined with next contact on this conducting strip;

One contact spring, its upper end is to wear the left side that is incorporated into said shift knob, and then secure bond is in the lower left of Switch main body in its lower end, and this contact spring is the power that pops up as the shift knob left side;

One pendular body, the one end is that head is combined in the set fixed leg of Switch main body sidewall relative position, this pendular body inner tail end group is provided with an operating member, this operating member is assembled in pendular body together with elastic component, the elongated end of operating member is exposed to outside the pendular body tail end, and operating member can be done transverse movement in pendular body inside:

One alloy piece generally is the  shape, is a side that is relatively arranged on pendular body;

One elastic contact chip, one end are to be fixed in second contact terminal, and another free-ended bottom surface is in conjunction with a upper contact.

Characteristics of the present utility model are, when alloy piece because of current overload when overheated, will be toward the flexural deformation of pendular body direction, and the projection that the pushing and pressing operating member extends, the elongated end of horizontal mobile causative action portion of pushing action portion moves laterally, break away from the support of the set shelves of Switch main body portion and make the pendular body tail end downward, the head of pendular body makes progress relatively, to original off-position swing, make elastic contact chip break away from by pendular body compacting state and the pushing tow that can make 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 its demonstration the utility model shift knob cuts out the situation of (OFF).

Fig. 3 is a cutaway view of the present utility model, and its demonstration the utility model shift knob is opened the situation of (ON).

Fig. 4 is a cutaway view of the present utility model, and it shows the utility model at current overload, the action schematic diagram during the electric loop escape.

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 wherein this construction of switch includes:

One shift knob 10, its upper surface is a recessed arc limit, the push action of two directions about lower position is provided with fulcrum 11 shift knob 10 is done with fulcrum 11 in the middle of its both sides, switch ammonium under this fulcrum 11 is turned round 10 both sides and has been extended triangular plate 12 downwards, is provided with pole hole 13 in triangular plate 12.

One Switch main body 20, it is the hollow housing of a tool opening 21, be arranged with a stopper 22 and a fixed leg 23 in the appropriate location of inner walls, the opening 21 on its top is that the linking group is established shift knob 10, the bottom is provided with several slots 24, being connected first,

second contact terminal

25,26, the first contact terminals 25 respectively and linking alloy piece 50 connection conducting strips 251, is to be combined with contact 252 on this guide card 251.

One contact spring 30, its upper end wears in the left side that is incorporated into above-mentioned shift knob 10, and then secure bond is in the lower left of Switch main body 20 in other lower end, and this contact spring 30 is the power that pops up as switch ammonium button 10 left sides.

One pendular body 40, be divided into left half pendular body 41 and right half pendular body 42 in its slightly elongated shape and the equity, this left side, right half pendular body 41,42 one ends are head 43 and wherein are provided with upright elliptoid engagement groove 431, in order to be combined in the set fixed leg 23 of Switch main body 20 sidewall relative positions, these pendular body 40 inner tail end groups are provided with an operating member 44, during combination, the projection 442 of operating member 44 passes the perforation 45 of right half pendular body 42, the elongated end 441 of operating member 44 is positioned at fluting 46, this operating member 44 is assembled in pendular body 40 inside together with the spring that places storage tank 443 (elastic component) 444, fastening post 48 correspondences by several of a left side half pendular body, 41 inner side edges is fastened on several fastening holes 47 that right half pendular body 42 is provided with and closely combines at holistic pendular body 40, and the elongated end 441 that makes operating member 44 is exposed to outside pendular body 40 tail ends, and operating member 44 can be done horizontal reciprocating motion in pendular body 40 inside.A left side half pendular body 41 sides are provided with a perforation 410, are linked to the pole hole 13 of shift knob 10 bottoms by a pole 49, make the pendular body 40 can be along with the push action interlock of switch ammonium button 10.

One alloy piece 50 generally is  and opens shape, is a side that is opposite to pendular body 40 mutually, and one props up pin and is fixed in first contact terminal 25, and another leftover bits and pieces is fixed in conducting strip 251.

One elastic contact chip 60, one end are fixed in second contact terminal 26, and another free end is provided with a contact hole 61, and by the bottom surface in conjunction with a upper contact 62.

Switch motion stroke of the present utility model includes switch (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, its demonstration the utility model shift knob cuts out the situation of (OFF), or this situation of closing is to be closed voluntarily by the user, press the right side of switch ammonium button 10 as the user, this contact spring 30 will be upheld with this action, making shift knob 10 is the axle center action that turns clockwise with fulcrum 11, making pole hole 13 is that the axle center clockwise direction is done circular motion (in the utility model for left) with fulcrum 11 also, and interlock pole 49 upper end homodromous movements, the perforation 410 of pole 49 lower end interlock pendular bodies 40 and pendular body 40 is pulled upwardly, its head 43 is no longer exerted pressure to the elastic contact chip 60 of below, 60 press powers because of disengaging pendular body 40 of this elastic contact chip pop up, upper contact 62 is separated with following contact 252, first contact terminal 25 and second contact terminal 26 are opened circuit, and the feed lines of cutting off the electricity supply is circuit and close (OFF) state.

As shown in Figure 3, it is a cutaway view of the present utility model, its demonstration the utility model switch ammonium button is opened the situation of (ON), press the left of switch ammonium button 10 as the user, this contact spring 30 will be pressed down distortion, switch ammonium button 10 is that the axle center is rotated counterclockwise action with fulcrum point 11, making pole hole 13 is that circular motion (in present embodiment for to the right) is counterclockwise done in the axle center with fulcrum 11 also, and interlock pole 49 upper ends in the same way (to the lower right to) action, the perforation 410 of pole lower end interlock pendular body 40 and pressing down with

pendular body

40,60 contacts press down to elastic contact chip in head 43 lower ends of pendular body 40, the upper contact 62 of elastic contact chip 60 bottom surfaces is contacted with the following contact 252 of conducting strip 251, extraneous electric current is promptly by first contact terminal 25, alloy piece 50, conducting strip 251, following contact 252, upper contact 62, elastic contact chip 60 to second contact terminals 26, and constitute a complete electric loop, for opening (ON) state.

And swinging up and down of pendular body 40 is with upright oval hollow groove 431, and the upper and lower relatively fixed leg 23 that slides on is as Fig. 2, Fig. 3, shown in Figure 4.

What must point out is, when above-mentioned switch ammonium button 10 cuts out (OFF) and opens (ON), be all the current interruption of normal condition or connect situation, so operating member 44 set elongated end 441 downsides of these pendular body 40 tail ends are all replaced by end face on the stopper 22, there is no any action and produce.

As shown in Figure 4, show the utility model cutaway view respectively, it shows that the utility model is when current overload, the action schematic diagram of escape, when electric current produces overload, this alloy piece 50 will because of the overload the heat perseverance to pendular body 40 direction bendings, the projection 442 of pushing action portion 44 immediately, interlock makes elongated end 441 downsides of operating member 44 break away from stopper 22, these pendular body 40 tail ends will lose support and drop downwards, the tail end (left end) that presents pendular body 40 is downward, the situation that head 43 makes progress relatively, head 43 lower ends can't be suppressed elastic contact chip 60 end faces, elastic contact chip 60 is able to be pressed down the curved bounce of being accumulated by former, upwards ejection successfully, and this upper contact 62 and following contact 252 are separated and cut off the power supply.

At this moment, if switch ammonium button 10 lefts do not have external force and exert pressure, contact spring 30 will diastole, and with the switch ammonium button 10 lefts jack-up that makes progress, this switch ammonium button 10 is that the axle center dextrorotation goes to the position of closing with fulcrum 11 promptly, as shown in Figure 2, and will and being pulled upwardly along with pole 49 inclinations, pendular body 40 replys the normal position, as shown in Figure 2, original state is replied in alloy piece 50 cooling back, and this pendular body 50 is the elastic returning of mat spring (elastic component) 444, and operating member 44 elongated ends 441 downsides of pendular body 40 are placed on the set stopper 22 of Switch main body 20 once more, to do the preparation of switch opens next time, as shown in Figure 2.

From the above mentioned, the utility model is by alloy piece 50, pendular body 40 interoperations, interlock rapidly when current overload makes elastic contact chip 60 trippings and cuts off the power supply, and can be 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 outside the practical effect, and be new design not seen before, and have progressive and practicality.

Below the utility model is done one and describe in detail, but above said, only be preferred embodiment of the present utility model, can not limit the scope that the utility model is implemented certainly.Be all variation and modifications of being made according to the utility model claim, all should still belong in the scope of the utility model claim protection.

Claims

1, a kind of construction of switch includes: a shift knob, a Switch main body, a contact spring, a pendular body, an alloy piece, an elastic contact chip; By the brake structure that pendular body and alloy piece constituted, shift knob cooperates elastic contact chip in conjunction with contact spring, forms in Switch main body according to its connection relationship position common combination, it is characterized in that:

2, by the said construction of switch of claim 1, it is characterized in that said pendular body is combined by left and right half pendular body and interior operating member thereof.

3,, it is characterized in that a left side half pendular body medial surface of said pendular body is provided with several and fastens several fastening holes that post correspondences are fastened on right half pendular body setting and closely combine pendular body in aggregates by the said construction of switch of claim 1.

By the said construction of switch of claim 1, it is characterized in that 4, the operating member of said pendular body is provided with one for the storage tank of putting elastic component.

5, by the said construction of switch of claim 4, it is characterized in that the elastic component that said storage tank is put is a spring.

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

In the middle of one shift knob, its both sides lower position establish educate fulcrum shift knob is done with fulcrum about the push action of two directions; Shift knob both sides under this fulcrum have extended triangular plate downwards, are provided with pole hole in triangular plate;

One contact spring, its upper end is to wear the left side that is incorporated into said shift knob, its lower end then secure bond in the lower left of Switch main body;

One pendular body, the one end is that head is combined in the set fixed leg of Switch main body sidewall relative position, this pendular body inner tail end group is provided with an operating member, this operating member is assembled in pendular body together with elastic component, the elongated end of operating member is exposed to outside the pendular body tail end, and operating member can be done horizontal reciprocating motion in pendular body inside;

One alloy piece generally is the  shape, is relatively arranged on a side of pendular body;

7, by the said construction of switch of claim 6, it is characterized in that the head of said pendular body is provided with hollow groove.

8, by the said construction of switch of claim 6, it is characterized in that said pendular body is combined by left and right half pendular body and interior operating member thereof.

9,, it is characterized in that a left side half pendular body medial surface of said pendular body is provided with several and fastens several fastening holes that post correspondences are fastened on right half pendular body setting and closely combine pendular body in aggregates by the said construction of switch of claim 6.

By the said construction of switch of claim 6, it is characterized in that 10, the operating member of said pendular body is provided with one for the storage tank of putting elastic component.

11, by the said construction of switch of claim 10, it is characterized in that the elastic component that said storage tank is put is a spring.

12, by the said construction of switch of claim 6, it is characterized in that said alloy piece is individually fixed in first contact terminal and conducting strip.