CN2519996Y - Short circuit proof press-button switch - Google Patents

Abstract

The utility model discloses an anti-short-circuit button switch, which comprises a body, a button arranged on the body, two terminals and a pair of sheet metals; the apical margin of the body is provided with a pivot hole to pivot the button, and the position on the inner face of the body near the pivot hole is provided with a fixture block, and the inner wall face of the body is provided with a block stop, and the bottom of the body is provided with a clip groove to fix the terminal, as well as the apical margin of the terminal is provided with a contact; the double sheet metals show a micro-bending shape, and the sheet metal is cut with a U-shaped groove whose root is not cut off and can be formed a deformation interval, and the end part of the deformation interval is provided with a contact which can be resisted and contacted with a contact of the terminal, and the double sheet metals are inserted into the fixture block; the button is pivoted on the apical margin of the body, whose two sides are provided with pivots, and the lower side of the button is oppositely provided with two pushing block with unequal length, and the double sheet metals are positioned between the two pushing blocks; the opposite lateral side of the body is formed an elastic splint. The switch has simple structure, small volume, convenient fixation and assembly.

Description

Anti-short circuit push-button switch

(1) technical field:

The utility model relates to a kind of anti-short circuit push-button switch, and particularly a kind of simple in structure, volume is little, the anti-short circuit push-button switch of being convenient to assemble.

(2) background technology:

Anti-short circuit push-button switch is used for the Protection switch because of the safety outage of short circuit that accidental cause causes, general common anti-short circuit push-button switch, as shown in Figure 4, wherein, comprise: body 40, form accommodation space in the body 40, the periphery of body 40 is provided with several clip slots 41,42,43, and in wherein installing terminal 44,45,46, the end of terminal 45 is provided with contact 451, bimetal leaf 48 is set on the terminal 46, bimetal leaf 48 ends are provided with that contact 481 is relative with the contact 451 of terminal 45, and the top edge of body 40 is provided with perforation, and the pivot 51 of button 50 both sides can be pivoted wherein, and can swing, the top that button 50 inside are provided with 52, one slide blocks 60 of two parallel fins forms auricle 62, and auricle 62 inserts in the parallel fin 52, and be pivoted, and metal axostylus axostyle 53 and be located in the end of a pull bar 65 with metal axostylus axostyle 53.

One side of slide block 60 forms arc protuberance 61, opposite side forms positioning convex portion 601, and button portion 491 is set in the body 40, a locating piece 64 is set in the button portion 491, locating piece 64 forms positioning convex portion 641 with respect to slide block 60 1 sides, and on two positioning convex portion 601,641 sheathed spring 63, when making button 50 left cuts, slide block 60 can utilize spring 63 and be pressed on the contact 481, and, the bottom button of pull bar 65 is held in the side of bimetal leaf 48, and arc protuberance 61 places that are positioned at the contiguous slide block 60 of body 40 internal faces are provided with groove 49.

The anti-short circuit push-button switch of this kind is with terminal 45,46 connect and are located on the circuit, and when short circuit, the terminal 45 of flowing through, 46 and the instantaneous large-current of bimetal leaf 48 can make bimetal leaf 48 heating, make its generation be bent upwards the power of distortion, and pushing and pressing slide block 60, making slide block 60 can go up button push 50 swings to the right, and the arc protuberance 61 of slide block 60 sides can slip into location in the groove 49, and make the contact 451 of contact, 481 escapes, as shown in Figure 5, at this moment, the arc protuberance 61 of slide block 60 sides slips into groove 49, and utilizes the elastic force of spring 63 to compress the location, and after fault is got rid of, but pressing button 50 is established to left cut, makes the bimetal leaf 48 can homings, and makes contact 481,451 can reply contact forms current path.

The anti-short circuit push-button switch of this kind, higher because of the various cost of its spare part, and assembling is difficult for, and adds the installing that upper body 47 peripheries are provided with several sleeve pipes 47 and body cap, need being plugged in the sleeve pipe 47 with one one of aluminium rivet, relative with body cap again perforation is riveted in addition, and findings such as slide block 60, spring 63 are easy escape when assembling, and does not have the convenience in the assembling, and, in use, spring 63 is again easily because elastic fatigue causes change action uncertain.

Application number is 86201244 " the safety switch construction improvement of tool protection circuit " for another example; it is the push-press lamp cover that is pivoted in the Switch main body upper end; and its left side; right both sides are provided with the elasticity blocking and collude; and three lug plates; first; three lug plates are connected with power line; and first lug plate top forms curved Zhe body; set firmly a platinum contact on the curved Zhe body; second lug plate top also forms curved folding body; curved Zhe body top connects a dish-like pairing sheet metal; and the below of dish-like pairing sheet metal is with respect to the platinum contact on first lug plate; also set firmly a platinum contact; the 3rd lug plate utilizes conductor wire to connect a resistance; and a neon lamp is located at the push-press lamp cover below; and utilize and be located at intrinsic some projections location; its two conductor wire is connected with the resistance and second lug plate respectively; and when first; two lug plates communicate and during energized; then neon lamp is shinny; to show conducting state; and a pull bar upper end laterally forms a curved Zhe body; can embed a lug of being located at the push-press lamp cover inner edge, and be the pivot joint state, but its bottom free end of the aforementioned dish-shaped pairing sheet metal of push-and-pull then.

Above-mentioned dish-like pairing sheet metal, on median plane, extend a contact flat spring to positioning end by free end, this contact flat spring tail end is reserved a through hole and is fixed for platinum contact, and in the cutting one appropriate gap T1 of positioning end central authorities, the positioning end of T1 both sides, gap is respectively equipped with location hole, available rivet is fixed on the curved Zhe end of second lug plate, because its internal stress makes it form shape naturally like dish-like bending arc shape, to replace existing pairing sheet metal contact spring, utilize the punching press distortion to make it be unidirectional bending arc shape, owing to set the proper proportion of the width W 2 of free-ended width W 1 and positioning end, change function and have two-way spring.

Yet this kind switch is provided with too many mechanical component and electronic component in Switch main body, assembling is difficult for, and cost is higher, and dish-like pairing sheet metal, pass through running into undesired big electric current, can heat up and crooked, want the switchback conducting state again, still need and utilize pull bar at an end of the pairing sheet metal interlock that is pivoted, just can push back the pairing sheet metal, make relative platinum contact conducting once more, as a whole, structure also has problem.

Application number is No. 82204642 " construction of switch of tool protection circuit " for another example; it mainly is to be formed with a slot part between the housing of combination mutually and watchcase; the top of slot part is pivoted with a briquetting; one bottom portion of briquetting is provided with a double-action plate; the slot part bottom is embedded with three set of connections sheets; wherein; be respectively equipped with platinum contact and a contact spring on the two set of connections sheets; one end of contact spring also extends to the top of another lug plate; this end also is provided with platinum contact; this end also is connected with the lower end of aforementioned double-action plate; so that briquetting and contact spring interlock; and when power supply transships; utilize contact spring surface varicose degree to change, automatic escape is to cut off the electricity supply; and guarantee Electrical Safety; but, this kind " construction of switch of tool protection circuit ", switch moment if because of load excessive; make big current lead-through; promptly have the electric arc of beating and produce, and be easy to generate explosion hazard, and; the resistance and the neon lamp that between two lug plates, are connected in series; in groove,, do not cover, cause the short circuit problem of circuit easily and have for exposed shape; therefore, existing anti-short circuit push-button switch need be improved.

(3) summary of the invention:

Main purpose of the present utility model is to provide a kind of and is convenient to assemble and anti-short circuit push-button switch that volume is little.

For achieving the above object, the utility model is taked following technical measures:

Anti-short circuit push-button switch of the present utility model, a kind of anti-short circuit push-button switch comprises: body, be located at a button on the body, be located at terminal and a bimetal leaf in the body;

Form accommodation space in the body, its top forms flanged lip, and reserves an opening, the body apical margin is provided with the pivot hole, and place, the contiguous pivot of this inner body surface hole is provided with fixture block, and the inner body wall face is provided with block, the body bottom is provided with the clip slot of fixed terminal, and the apical margin of terminal is provided with contact;

Bimetal leaf is a sheet metal that is the microbend shape, cut on it and be provided with a root and do not cut off the U type groove that forms between a deformed area, end between the deformed area is provided with a contact that can lean and contact with the contact on the described terminal, and bimetal leaf is plugged in the fixture block;

Button is hubbed on the apical margin of body, and its both sides are provided with pivot, and pivot is hubbed in the described pivot hole, and the button downside relatively is provided with two pushing blocks of unequal length, and bimetal leaf is between two pushing blocks.

Wherein, the relative outside of described body forms the Elastic clamping plate with location fixing effect.

Compared with prior art, the utlity model has following effect:

Anti-short circuit push-button switch structure of the present utility model is simplified, it is to be provided with two-terminal and bimetal leaf in the accommodation space bottom of body, and be provided with first pushing block and second pushing block at the button downside that is pivoted, bimetal leaf forms the microbend shape, and bimetal leaf is provided with deformable U type groove, and they are between two pushing blocks of button downside, component part is few, volume is littler, can reduce cost, and applicability is strong; Because the relative outside of body forms the Elastic clamping plate with location fixing effect, therefore, this switch is fixing and easy to assembly again.

(4) description of drawings:

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

Fig. 2: the utility model assembled sectional view.

Fig. 3: working state schematic representation of the present utility model.

Fig. 4: the combination front view of existing anti-short circuit push-button switch.

Fig. 5: the working state schematic representation of existing anti-short circuit push-button switch.

(5) embodiment:

Reaching embodiment in conjunction with the accompanying drawings is described in detail as follows architectural feature of the present utility model:

As shown in Figures 1 and 2, wherein, anti-short circuit push-button switch of the present utility model is by body 10, button 20, terminal 24,26 and bimetal leaf 27 form, body 10 forms rectangular-shaped, and form accommodation space 11 in the body 10, the top of body 10 forms flanged lip 18, and be reserved with an opening, the relative edge on the long limit of the apical margin of body 10 is provided with pivot hole 12, body 10 inner faces in contiguous pivot hole 12 are provided with fixture block 16, the internal face minor face opposite position of body 10 is provided with block 13, and the bottom of body 10 is provided with several clip slots 14,15, clip slot 14, be provided with terminal 26 in 15,24, terminal 24 tops are provided with contact 25, body 10 outsides form rubber-like clamping plate 17, and when body 10 is embedded in the hole, can utilize the elasticity of clamping plate 17 and form location fixing state.

Bimetal leaf 27 forms the microbend shape, and wherein be provided with U type groove 27, bimetal leaf 27 scopes that U type groove 27 is contained form between the deformed area 28,28 bottom is provided with contact 29 between the deformed area, bimetal leaf 27 is located in the body 10, be plugged in the fixture block 16, two contacts 25,29 are formed against contact condition.

The both sides of button 20 are provided with pivot 21, pivot 21 can be hubbed in the apical margin pivot hole 12 of body 10, button 20 can be switched with swinging, and set block 13 on the internal face minor face of body 10 can be used as swing terminal block when switching of button 20; The downside of button 20 is provided with first pushing block 22 and second pushing block 23 of unequal length, when button 20 is hubbed on the top of body 10, bimetal leaf 27 is positioned at 23 of first pushing block 22 and second pushing blocks, and first pushing block 22, second pushing block 23 are aligned with between the deformed area of bimetal leaf 27 28.

As Fig. 2, shown in Figure 3, when circuit is short-circuited, the instantaneous large-current of terminal 24,26, bimetal leaf 27 of flowing through can add thrermostatic bimetal-plate 27, making between the deformed area 28 can be towards 22 flexural deformation of first pushing block, and between the deformed area 28 the distortion processes in, can promote first pushing block 22, button 20 is swung to the right, and the set contact 29 of 28 bottoms between the deformed area and the contact 25 of terminal 24 are disengaged; And after fault is got rid of, but pressing button 20 is established to left cut, make first pushing block 22 can stir the contact condition of 28 answers, two contacts 29,25 between the deformed area, and the current lead-through of reflex circuit, because bimetal leaf 27 forms the microbend shape, make distortion and switching effect have more spring, and make action more certain.

Foregoing is to utilize embodiment that technical characterictic of the present utility model is described, is not to be used to limit protection range of the present utility model, even there is the people to change slightly on the basis of the utility model design, must belong in the protection range of the present utility model.

Claims (2)

1. anti-short circuit push-button switch comprises: body, be located at a button on the body, be located at terminal and a bimetal leaf in the body; It is characterized in that:

Form accommodation space in the body, its top forms flanged lip, and reserves an opening, the body apical margin is provided with the pivot hole, and place, the contiguous pivot of this inner body surface hole is provided with fixture block, and the inner body wall face is provided with block, the body bottom is provided with the clip slot of fixed terminal, and the apical margin of terminal is provided with contact;

Bimetal leaf is a sheet metal that is the microbend shape, cut on it and be provided with a root and do not cut off the U type groove that forms between a deformed area, end between the deformed area is provided with a contact that can lean and contact with the contact on the described terminal, and bimetal leaf is plugged in the fixture block;

Button is hubbed on the apical margin of body, and its both sides are provided with pivot, and pivot is hubbed in the described pivot hole, and the button downside relatively is provided with two pushing blocks of unequal length, and bimetal leaf is between two pushing blocks.

2. anti-short circuit push-button switch according to claim 1 is characterized in that, the relative outside of described body forms the Elastic clamping plate with location fixing effect.

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