CN2510988Y

CN2510988Y - Short-circuit-proof press-button switch

Info

Publication number: CN2510988Y
Application number: CN 01269693
Authority: CN
Inventors: 黄英哲
Original assignee: JOEMEX ELECTRIC CORP
Current assignee: JOEMEX ELECTRIC CORP
Priority date: 2001-12-14
Filing date: 2001-12-14
Publication date: 2002-09-11
Anticipated expiration: 2011-12-14

Abstract

The utility model relates to a button switch which can prevent short circuit, comprising a switch body, a button and a body cover, an accommodation space is formed in the switch body, the accommodation space is provided with a terminal, a bimetallic strip and a pull rod; the button is provided with a sword-like push block whose side forms a pivot, the perforated hole can be sleeved on the pivot, the peripheral edge of the integral forming body forms a plurality of fixation rods and fixation holes, the side end face of the body cover is provided with a plurality of casings and location rods, the body cover is arranged on the switch body, the casings can be sleeved on the fixation rods and the location rods can be inserted into the fixation holes, the fixation rods and the location rods can be respectively fixed in the casings and the fixation holes through heating and riveting. The utility model is provided with simple structure, good action accuracy, easy assembly and cost reduction; the hidden structure of the resistor and the clamping location of the on light can prevent short circuit, the electric arc produced by large current can be derived to ground by the grounded terminal, which has good safety.

Description

Anti-short circuit push-button switch

Technical field

The relevant a kind of anti-short circuit push-button switch of the utility model.

Background technology

Anti-short circuit push-button switch can be used as the protective equipment of the safety outage of the short circuit that accidental cause causes, general common anti-short circuit push-button switch, be as shown in Figure 4, it has body 40, form accommodation space in the body 40, body 40 peripheries are provided with

several clip slots

41,42,43, and in wherein being provided with

terminal

44,45,46, terminal 45 ends are provided with contact 451, terminal 46 is provided with bimetal leaf 48, bimetal leaf 48 ends are provided with contact 481 and form relative with the contact 451 of terminal 45, body 40 top edges are provided with perforation, the pivot 51 of button 50 both sides can be pivoted wherein can swing, button 50 inside are provided with two parallel fins 52, one slide block, 60 tops are formed with auricle 62, auricle 62 inserts in the parallel fin 52 and with metal axostylus axostyle 53 and is pivoted, and metal axostylus axostyle 53 wears a pull bar 65 ends, slide block 60 1 sides form arc protuberance 61, opposite side forms positioning convex portion 601, and be provided with button portion 491 in the body 40, be provided with a positioning block 64 in the button portion 491, locating piece 64 is formed with positioning convex portion 641 with respect to slide block 60 sides, and in two positioning convex portion 601, be arranged with spring 63 on 641, when making button 50 left cuts, slide block 60 can be pressed on the contact 481 by spring 63, pull bar 65 bottoms are held in bimetal leaf 48 sides, and, be positioned at the contiguous slide block 60 arc protuberances of body 40 internal faces 61 places and be provided with groove 49.

Adopt said structure, when short circuit, the terminal 45 of flowing through, 46 and the instantaneous large-current of bimetal leaf 48 can add thrermostatic bimetal-plate 48, make its generation be bent upwards 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 in the groove 49 and located, and makes the contact 451 of contact, 481 escapes, shape are as shown in Figure 5, at this moment, the arc protuberance 61 of slide block 60 sides slips into location in the groove 49, and after fault is got rid of, but pressing button 50 is established to left cut, make bimetal leaf 48 homings and make contact 481,451 can reply contact, make circuit conducting again.

Existing this anti-short circuit push-button switch, because of the various cost of its spare part higher, add upper body 40 peripheries several sleeve pipes 47 and body cap installing are set, need to be inserted in addition riveted of perforation relative with body cap again in the sleeve pipe 47 one by one with aluminium rivet, and findings such as slide block 60, spring 63 are at easy escape of when assembling, and do not have the convenience in the assembling, and in use, spring 63 is again easily because elastic fatigue causes the untrue shortcoming of change action.

Disclose a kind of safety switch in the Taiwan patent application No. 86201244 " the safety switch construction improvement two of tool protection circuit "; its structure 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 plate; with first; three lug plates are connected with power line; and first lug plate top forms the bending body; set firmly a platinum contact on the bending body; and second lug plate top also forms bending folding body; bending body top connects a dish-like pairing sheet metal; and dish-like pairing sheet metal below is with respect to the platinum contact on first lug plate; also set firmly a platinum contact; the 3rd lug plate it utilize conductor wire to connect a resistance; and one neon lamp be located at 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 one the pull bar upper end laterally form a bending body and 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 described 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, and the positioning end in T1 both sides, gap is respectively equipped with the bending end that location hole can be fixed on second lug plate with rivet, make it form a shape naturally by its internal stress like dish-like bending arc shape, the pairing sheet metal contact spring of commonly using with replacement, it utilizes the punching press distortion to make it be unidirectional bending arc shape, by setting the proper proportion of free-ended width W 1 and the width W 2 of positioning end, change function and have two-way spring.

Yet, this construction of switch is provided with too many mechanical component and electronic component in Switch main body, cause assembling to be difficult for and cost higher, and dish-like pairing sheet metal is running into undesired big electric current by heating up and after the bending, want the switchback conducting state, still need and just can push back the pairing sheet metal at the interlock that is pivoted of pairing sheet metal one end by pull bar, make relative platinum contact conducting once more, generally speaking, still having the mechanicalness problem produces, and difficult claim completely and desirable not to the utmost, therefore, existing anti-short circuit push-button switch is not attained and is improved and truly have the necessity that is improved.

In addition; Taiwan patent application No. 82204642 " construction of switch of tool protection circuit " discloses a kind of switch; its structure is to be formed with a slot part between the housing of mutual combination and watchcase; the slot part top is pivoted with a briquetting; briquetting one bottom portion is provided with a double-action plate; the slot part bottom is embedded with three set of connections sheets again; wherein be arranged with a platinum contact and a contact spring on the two set of connections sheets; this contact spring one end also extends to the top of another lug plate; this end also is provided with platinum contact; this end also is connected with aforementioned double-action plate lower end; so that briquetting and contact spring constitute interlock; and when power supply transships; can change by contact spring surface varicose degree; automatically escape is to cut off the electricity supply; and guarantee Electrical Safety; but " construction of switch of tool protection circuit "; switch moment if because of load excessive; make big current lead-through; promptly have the electric arc generation of beating, and be easy to generate the danger of blast and the resistance and the neon lamp that between two lug plates, are connected in series; in groove, cover, cause the short circuit problem on the circuit easily for exposing not have.

The utility model content

The purpose of this utility model provides a kind of anti-short circuit push-button switch, thereby can avoid switching moment if crossing the big current lead-through of ambassador because of load has the electric arc of beating to produce to be easy to generate the danger of blast, and can prevent short circuit and guarantee safety in utilization.

For achieving the above object, anti-short circuit push-button switch of the present utility model, it is by body, button and body cap are formed, form accommodation space in the body, in the edge of body top the pivot hole is set, make the set pivot in button both sides can be hubbed at the pivot hole, the body periphery is provided with several clip slots and can installs wherein for each terminal, and a terminal ends is provided with contact, and a terminal top is provided with bimetal leaf, the bimetal leaf end is provided with contact, two contacts form against contact, are characterized in: be provided with the pushing block of knife-edge in the button, the pushing block side forms pivot, the perforation of one pull bar is sheathed on the pivot, and pull bar bottom hook portion is held in the terminal downside of bimetal leaf; Integrated body periphery forms several fixed levers and several fixing holes, and forms a brood of groove and be communicated with clip slot, resistor is set in the nest groove contacts with the terminal formation of ground connection; The body cap side end face is provided with several sleeve pipes, several backstays, body cap be arranged at make on the body casing pipe sleeve on fixed lever, backstay inserts in the fixing hole, by the heating riveted fixed lever and backstay are consolidated in sleeve pipe and the fixing hole respectively, and the body cap side is provided with grip slipper, be provided with neon lamp in the grip slipper, one of neon lamp line of neon lamp contacts with resistor, and another neon lamp line then with the termination contact in electric loop, so that the electric arc that big electric current was produced is derived by the terminal of ground connection.

Adopt such scheme, the utlity model has the characteristic that structure is simplified, positive motion is good and be easy to assemble, and be suitable for industry manufacturing assembling and adopted, and, clamper is set and wherein at the body cap side with the neon lamp setting, and resistor is hidden with the nest groove, and can prevent effectively that short circuit from taking place, and add the electric arc that instantaneous large-current produces, can be cushioned by resistor, and discharged towards ground via the terminal of ground connection, and can be reached the practical effect that has more fail safe.

Understand the purpose of this utility model, characteristics and advantage for clearer, preferred embodiment of the present utility model is elaborated below in conjunction with accompanying drawing.

Description of drawings

Fig. 1 is the three-dimensional exploded view of the anti-short circuit push-button switch of the utility model one preferred embodiment.

Fig. 2 is the combination front view of the utility model one preferred embodiment.

Fig. 3 is the user mode figure of the utility model one preferred embodiment.

Fig. 4 is existing anti-short circuit push-button switch combination front view.

Fig. 5 is the user mode figure of existing anti-short circuit push-button switch.

Embodiment

At first, please cooperate referring to Figure 1 and Figure 2, wherein, anti-short circuit push-button switch of the present utility model is made up of body 10, button 20 and body cap 30, form accommodation space in the body 10, and in body 10 top edges 11, pivot hole 12 is set, the set pivot 21 in button 20 both sides can be hubbed in the pivot hole 12, carry out change action and button 20 can be swung.

Integrated body 10 peripheries form several clip slots 13,14,15, several fixed levers 16 and several fixing holes 17, install terminal 24,25,26 in the clip slot 13,14,15, terminal 25 ends are provided with contact 251, terminal 26 tops are provided with bimetal leaf 27, bimetal leaf 27 is provided with pad 28 with terminal 26 bonding stations, bimetal leaf 27 ends are provided with contact 29, and contact 29 forms with the contact 251 of terminal 25 and contacts.

In addition, the nest groove 18 that is communicated with clip slot 13 is set in the body 10, installing resistor 38 in the nest groove 18, the terminal 24 of resistor 38 bottoms contact ground connection.

The pushing block 22 of knife-edge is set in the button 20, and pushing block 22 bottom edges form arc sections 221, and the perforation 231 that pushing block 22 sides form pivot 222, one pull bars 23 can be sheathed on pivot 222, and pull bar 23 bottom hook portions are held in bimetal leaf 27 terminal downsides.

Body cap 30 side end faces are provided with several sleeve pipes 31, several backstays 32 and several follow blocks 33,34,35, and form relative with several fixed levers 16, several fixing holes 17 and several clip slots 13,14,15 of body 10, make that sleeve pipe 31 can be enclosed within on the fixed lever 16, backstay 32 can insert in the fixing hole 17, and follow block 33 can insert in the clip slot 13,14,15, and can close by rivet hot fixed lever 16 and backstay 32 is consolidated in sleeve pipe 31 and the fixing hole 17 respectively.

Body cap 30 medial surfaces are provided with grip slipper 36, the neon lamp 37 of indicating status is set in the grip slipper 36, the power supply of neon lamp 37 is connect with two neon lamp lines 371,372 and is established, and be fixedly arranged on body 10 sides when being sealed when body cap 30, can be as shown in Figure 2, make neon lamp line 371 can be contacted with resistor 38, it is formed with the terminal 24 of earth connection is connected, another neon lamp line 372 then can contact with terminal 25, when making contact 251,29 contact conductings, the power supply electricity can flow into neon lamp 37 and be lighted, and can the reactive switches state.

As Fig. 2, shown in Figure 3, when short circuit, the big electric current of terminal 24,26, bimetal leaf 27 of flowing through can add thrermostatic bimetal-plate 27, make it be bent upwards distortion, and pushing and pressing pushing block 22, and along with arc sections 221, making pushing block 22 can upwards promote button 20 swings to the right, and make contact 25,29 escapes of contact, shape as shown in Figure 3, and after fault is got rid of, but pressing button 20 is established to left cut, make bimetal leaf 27 homings and make contact 25,29 can reply contact, make electric current reply conducting.

In addition, when switching, switch of the present utility model produces the electric arc of beating if run into instantaneous large-current, then can utilize resistor 38 to be cushioned, and discharge towards ground via the terminal 24 of ground connection, have more fail safe to prevent it from producing blast, add that neon lamp 37 is subjected to the positioning clamping of grip slipper 36, and resistor 38 is placed in the nest groove 18 to form and hides, can prevent that short circuit from taking place.

Can know that by the above advantage of finding out the utility model design is as follows:

Anti-short circuit push-button switch structure of the present utility model simplifies, easy to assembly, and can reduce cost, specifically, Because in the body terminal, bimetal leaf and button are set, this button has the pushing block of knife-edge, can form really better Moving property, its body cap is provided with several sleeve pipes, several backstays, with the formed fixed bar of body periphery, fixing The hole is sheathed, and plug can be in addition fixed by the heating riveted, and assembling is simplified, is easy to its structure, and can reach effective reduction The purpose of cost, and, neon lamp is located with the clamping seat, and resistor hidden with the nest groove, and energy Prevent that effectively short circuit from taking place, add the electric arc that instantaneous large-current produces, can be cushioned by resistor, and warp Discharged towards ground by the terminal of ground connection, and can be reached the practical effect that has more security.

Claims

1. anti-short circuit push-button switch, it is made up of body, button and body cap, form accommodation space in the body, in the edge of body top the pivot hole is set, make the set pivot in button both sides can be hubbed at the pivot hole, the body periphery is provided with several clip slots and can installs wherein for each terminal, one terminal ends is provided with contact, and a terminal top is provided with bimetal leaf, and the bimetal leaf end is provided with contact, two contacts form against contact, it is characterized in that:

Be provided with the pushing block of knife-edge in the button, the pushing block side forms pivot, and the perforation of a pull bar is sheathed on the pivot, and pull bar bottom hook portion is held in the terminal downside of bimetal leaf;

Integrated body periphery forms several fixed levers and several fixing holes, and forms a brood of groove and be communicated with clip slot, resistor is set in the nest groove contacts with the terminal formation of ground connection;

The body cap side end face is provided with several sleeve pipes, several backstays, body cap be arranged at make on the body casing pipe sleeve on fixed lever, backstay inserts in the fixing hole, by the heating riveted fixed lever and backstay are consolidated in sleeve pipe and the fixing hole respectively, and the body cap side is provided with grip slipper, be provided with neon lamp in the grip slipper, one of neon lamp line of neon lamp contacts with resistor, and another neon lamp line then with the termination contact in electric loop, so that the electric arc that big electric current was produced is derived by the terminal of ground connection.

2. anti-short circuit push-button switch as claimed in claim 1 is characterized in that, described pushing block bottom edge forms arc sections.