CN2299389Y

CN2299389Y - Safety switch

Info

Publication number: CN2299389Y
Application number: CN 97204248
Authority: CN
Inventors: 游隆正; 郭寿祺
Original assignee: HUAWAN ELECTRIC MOTOR INDUSTRIAL Co Ltd
Current assignee: HUAWAN ELECTRIC MOTOR INDUSTRIAL Co Ltd
Priority date: 1997-02-21
Filing date: 1997-02-21
Publication date: 1998-12-02
Anticipated expiration: 2007-02-21

Abstract

The utility model relates to a safety switch which uses a bimetallic strip. Contact points arranged on the bimetallic strip are separated from contact feet contacted with the contact point because of the deformation of the bimetallic strip caused by the heat or the external force, so the state of the access circuit of the inner side of the switch is changed into the state of the broken circuit. Simultaneously, an insulating strip displaced because of the pushing of the spring force is clamped between two contact points which forms the access circuit to ensure the maintenance of the state of the broken circuit. When the state of the access circuit needs to be restored, the insulating strip is restored to the position of the state of the access circuit, and the bimetallic strip is changed to the original shape. So the state of the access circuit can be restored when the contact points arranged on the bimetallic strip are contacted with the contact feet.

Description

Safety switch

The utility model relates to a kind of safety switch.

In the traditional circuit apparatus for protecting power supply, adopt overcurrent to open circuit mostly to protect electric device not can because of sudden high electric current by damaging, but traditional circuit all is provided with overcurrent release and mains switch respectively, thus its inconvenience is arranged when using, and necessity of improvement is arranged; No. 83205055 novel patent in Taiwan of this creator application promptly designs at above-mentioned inconvenience, overcurrent release and switch integrated, and checked and approved patent; But this creator finds again, this structure Design emphasis (as shown in Figure 8), after being to make dump with the insulating trip 280 that bounces up, after treating that electric current is normal, switch body is switched again, can depress insulating trip 280 simultaneously, make bimetal leaf and lift up sheet pedestal 26 contact again and recover the energising, it still needs again diverter switch to reach in action, so still have necessity of improvement.

Main purpose of the present utility model is, a kind of safety switch of automatic shutdown circuit can produce powerful electric current in circuit the time is provided, and it all can provide insulation to ensure to electronic component and user, and the user is more simple in operation.

The technical solution of the utility model is, a kind of safety switch is provided, and it comprises:

One top then only offers the housing of the closure designs of two openings and a storage tank for the open design bottom;

One by moving plate, it is the inside that is arranged on this housing in mobilizable mode;

One insulating trip, it its be to be provided with in the mode of motion below can reaching upward in the confined space of this housing, and its below then is sheathed one first spring that has;

One first pin, it is the inside that is installed in this housing, and an extension wherein then is to be set out by the opening that this housing bottom is offered;

One second pin, it also is the inside that is installed in this housing, and another opening that an extension is wherein also similarly offered by the bottom of this housing is set out,

One bimetal leaf, the part of this bimetal leaf are that the part with this second pin is solid-located;

A loam cake, it is the open space that just can cover above this housing, simultaneously, the one side then is to define one can supply this insulating trip when doing motion upward, can then offer an elongated slot in addition in the inside of this loam cake from the short slot of wherein doing partly to pass, and

The seat of lifting up with an extension rod that can extend and a breach that is cooperating the short slot of this loam cake and offering by the elongated slot of this loam cake.

Described safety switch, wherein, still be provided with on this loam cake one can ccontaining luminous element in its volume inside.

Described safety switch, wherein, this lifts up on the relative two sides of seat is respectively to be provided with a trip, can engage mutually and articulates with being separately positioned on a draw-in groove on the corresponding side of this housing.

Described safety switch, wherein, this is to be provided with an inclined-plane on moving plate, and is to be in contact with one another with this extension rod of lifting up seat.

Described safety switch wherein, is that a vertical stop part that forms is being set on this insulating trip, and it is to be in when contacting at this first contact and this second contact, is fastened on the below of these two contacts just.

Described safety switch, wherein, this first spring is this storage tank inside that is contained in this housing.

Described safety switch, wherein, this bimetal leaf is that the material that can produce deformation by being heated is made.

Described safety switch, wherein, this loam cake still has one second spring, and the one end is to be fixed together with this loam cake, and its other end then is to conflict to lift up the bottom of seat at this.

Because safety switch of the present utility model inside is to be provided with a slice can produce the bimetal leaf 60 of deformation because of being heated, and this bimetal leaf 60 is to be solidly connected with each other with this second pin 50, so during the current flowing beyond there is rated value safety switch of the present utility model inside, or when being subjected to by moving plate 20 compressing, this bimetal leaf 60 itself then forms the deformation of this bimetal leaf 60 because of being heated or suffering oppression, cause second contact 61 on it to break away from contact position with first contact 42, and make this insulating trip 34 therebetween from being separated, cause safety switch of the present utility model to be in the state that opens circuit, and when desiring the reversion switch path, only need to convexedly stretch on the insulator 30 of lifting up seat 80 ora terminalis and press by getting final product downwards.

Therefore, safety switch of the present utility model has had concurrently " active " and " passive type " two kinds of modes that formation is opened circuit, no matter so can be, also or the user, all can provide absolute guarantee, and its user simplifies more in operation to being electronic component.

Further specify specific structural features of the present utility model and purpose below in conjunction with accompanying drawing.

Brief Description Of Drawings:

Fig. 1 is the stereogram of the utility model safety switch;

Fig. 2 is the exploded view of the utility model safety switch;

Fig. 3 is a cutaway view of the present utility model;

Fig. 4 is the generalized section of 4-4 line among the utility model Fig. 3;

Fig. 5 is that bimetal leaf of the present utility model is met heat and produced the action schematic diagram of deformation;

Fig. 6 is that the utility model is by the action schematic diagram of shell fragment on the moving plate compressing bimetal leaf;

Fig. 7 is the generalized section of 7-7 line among the utility model Fig. 6;

Fig. 8 is the exploded view of the safety switch of a prior art.

See also Fig. 1 and Fig. 2, safety switch of the present utility model is an open design by a top mainly, the bottom then only offers the housing 10 of the closure designs of two openings (also do not indicate and do not show), one by moving plate 20, it is the inside that is arranged on this housing 10 in mobilizable mode, one insulator 30, it is with motion below can reaching upward in the confined space of this housing 10, and its below then is sheathed one first spring 31 that has, one first pin 40, it is the inside that is installed in this housing 10, and an extension wherein then is to be set out by the opening that these housing 10 bottoms are offered, one second pin 50, it also is the inside that is installed in this housing 10, and another opening of also similarly offering of an extension wherein (indicating) and wearing out by the bottom of this housing 10, one bimetal leaf 60, its shell fragment 62 is provided with contact 61, and the part of this bimetal leaf 60 is that the part with this second pin 50 is solid-located, a loam cake 70, it is the open space that just can cover above this housing 10, simultaneously, the one side then is to define one can supply this insulator 30 when doing motion upward, can be from the short slot of wherein doing partly to pass 71, inside at this loam cake 70 is then being offered an elongated slot 72 in addition, and 80 of the seat of lifting up with an extension rod 81 and a breach 82 that is cooperating the short slot 71 of this loam cake 70 and offering combines; By being clear that among Fig. 2, be provided with the storage tank 11 that an inside can ccontaining first spring 31 in one piece in the inside of this housing 10, and, in the bottom of insulator 30 then is to dispose a fit portion 32, so, 30 of this insulators can utilize this fit portion 32 and be linked in together with this first spring 31, and be contained in the inside of this storage tank 11, simultaneously, side at this insulator 30 then is to be provided with a stop part 33, below stop part 33, be formed with the insulating trip 34 of a vertical sheet, and be that an inclined-plane 21 is being set on by the body of moving plate 20 at this; In addition, side at first pin 40 is that one first contact 42 is being set, on bimetal leaf 60, be provided with shell fragment 62 again, one side of shell fragment 62 then is to be provided with one second contact 61, so, when inserting respectively, this first pin 40 and this second pin 50 be arranged on two openings that these housing 10 bottoms are offered, and after this bimetal leaf 60 and this second pin 50 be fixed together, this first contact 42 is to be in contact with one another with this second contact 61 just to be in the same place, and this insulator 30 utilize itself fit portion 32 and and this first spring 31 combines and when being contained in the inside of this storage tank 11, then just thereunder, by second contact, 61 clips and this moment position this first spring 31 below insulator 30 be to be in oppressed state; Then, again loam cake 70 is covered the top of this housing 10, covered with open area these housing 10 tops, the upper end of this insulator 30 then is just can be contained in the short slot 71 of this loam cake 70, and be mutually concordant with these short slot 71 places, again by among the figure as can be known, when this loam cake 70 regional above covering this housing 10, be to engage mutually on every side with the top of this housing 10, in addition, at a side place of this loam cake 70 elongated slot 72 is being set, one can be in order to the projection (not indicating) of accepting one second spring 73, and ccontaining space 74, can optionally insert a luminous element in this space 74, so that be path or the identification (not shown) when opening circuit as switch, after being fixed in this loam cake 70 on this housing 10, lift up with one that seat 80 utilizes trip 83 being integrally formed on its relative side face again and and two draw-in grooves 12 that cooperatively interact on this housing 10 and being articulated, yet, before this being lifted up seat 80 and this housing 10 is articulated, then be earlier this to be lifted up that seat 80 extension rod 81 is passed from elongated slot 72 places of this loam cake 70 and contact to be in the same place with this inclined-plane 21 by moving plate 20, and, lift up between the top of seat 80 bottom and this loam cake 70 at this, then be to set firmly one second spring 73, this second spring 73 can guarantee that this lifts up seat 80 and forever remain on the same position; In addition, offering a breach 82 at this side place of lifting up seat 80, it is that short slot 71 with this loam cake 70 matches, and so, the upper end of this insulator 30 then is to be located and freely up and down by " passage " that this short slot 71 and this breach 82 places form.

By what can see among Fig. 3 and Fig. 4 is the view of safety switch of the present utility model when combining; Wherein, this lifts up seat extension rod 81 of 80 is to be extended and descended by elongated slot 72 places of this loam cake 70, and and this inclined-plane 21 by moving plate 20 contact, the insulating trip 34 of this insulator 30 then is the bottom that is compressed on second contact 61, and this moment first spring 31 be to be under the state of compressing; Therefore, by among the figure as can be known, this moment is according to the utility model and produced safety switch is to be under the state of path.

Cooperate shown in Figure 5 again, exceed the quata electric current when flowing through bimetal leaf 60 when moment is external, rightabout because shell fragment 62 is heated towards first contact 42 produces deformation, second contact 61 will separate with first contact 42 this moment, make switch be off state, and the deformation of working as shell fragment 62 reaches and is enough to make the insulating trip 34 of insulator 30 by first, second contact 42, when bouncing up upwards in 61 the gap, insulator 30 discharges elastic force because of former compressed first spring 31, rise to stop part 33 and till pushing up the lower edge of loam cake 70 and insulator 30 upspringed, this moment, insulating trip 34 was positioned at two point 61, between 42, switch presents off state, and insulator 30 first halves are to convexedly stretch in to lift up suitably height of seat 80 at this moment, treat that source current recovers just often, the user only need with convexedly stretch in lift up seat insulator 30 upper end edge portion parts of 80 to press down by to lift up seat 80 upper limbs and be concordant, insulator 30 recovers Fig. 3 and state shown in Figure 4 again, at this moment, two

point

61,42 contacts more again, switch forms channel status.

Again by among appended graphic Fig. 6 and Fig. 7 as can be known, when the user desires to cut off Switching Power Supply voluntarily, can lift up seat 80 when making second spring 73 be in the situation of compressing by depressing this, because of extension rod 81 is to contact with this inclined-plane 21 by moving plate 20 when flat, so when lifting up seat 80 the time by depressing, this can be extended bar 81 by 21 on the inclined-plane of moving plate 20 and promote, and move towards the direction of bimetal leaf 60, and compressing shell fragment 62, cause second contact 61 of this shell fragment 62 to break away from and first contact, 42 position contacting, at this moment, then between first contact 42 and second contact 61, then can be formed with a gap, this gap then just can be subjected to the spring force of first spring 31 by the below and upsprings upward for this insulating trip 34, and this first contact 42 and this second contact 61 are separated, and causes opening circuit of 61 of this first contact 42 and this second contacts; And the insulator 30 of this moment is owing to the restriction that no longer is subjected to this

contact

42,61, so it can pass a suitable length by short slot 71 and this breach 82 places of lifting up seat 80 of this loam cake 70.In addition, in that to lift up seat after 80s by depressing this, because the setting of second spring 73, can make and lift up seat 80 and return to original position down by the state of pushing; And when desiring to make switch to recover channel status, then action as previously mentioned will convexedly stretch in insulator 30 upper ends of lifting up seat 80 to pressing down by can the return path state.

Claims

1. safety switch, it is characterized in that: it mainly comprises

One by moving plate, and it is the inside that is arranged on this housing in mobilizable mode;

One insulating trip, it is to be provided with in the mode of motion below can reaching upward in the confined space of this housing, and its below then is sheathed one first spring that has;

One second pin, it also is the inside that is installed in this housing, and another opening that an extension is wherein also similarly offered by the bottom of this housing is set out;

A loam cake, it is the open space that just can cover above this housing, simultaneously, the one side then is to define one can then offer an elongated slot in addition in the inside of this loam cake from the short slot of wherein doing partly to pass for this insulating trip when doing motion upward; And

2. safety switch according to claim 1 is characterized in that: this loam cake be provided with one can ccontaining luminous element the space.

3. safety switch according to claim 1 is characterized in that: this lifts up on the relative two sides of seat is respectively to be provided with a trip, can engage mutually and articulates with being separately positioned on a draw-in groove on the corresponding side of this housing.

4. safety switch according to claim 1 is characterized in that: this is to be provided with an inclined-plane on moving plate, and is to be in contact with one another with this extension rod of lifting up seat.

5. safety switch according to claim 1 is characterized in that: be that a vertical stop part that forms is being set on this insulating trip, it is to be in when contacting at this first contact and this second contact, is fastened on the below of these two contacts just.

6. safety switch according to claim 1 is characterized in that: this first spring is this storage tank inside that is contained in this housing.

7. safety switch according to claim 1 is characterized in that: this bimetal leaf is that the material that can produce deformation by being heated is made.

8. safety switch according to claim 1 is characterized in that: this loam cake still has one second spring, and the one end is to be fixed together with this loam cake, and its other end then is to conflict to lift up the bottom of seat at this.