CN2164112Y - Overcurrent release - Google Patents

Abstract

The utility model relates to an overload protection circuit breaker which aims to improve the structure of the traditional circuit breaker, reduce parts, simplify assembly process, and decrease technique difficulty. The overload protection circuit breaker comprises a casing, a base, two metal conductive sheets, a metal sheet, a manual reset mechanism composed of a duct, a pressing button, and a spring, and a bolt lock component, wherein, the two metal conductive sheets are embedded and inserted in a slotted hole and an embedding groove corresponding to the base to be positioned through insertion tenons and clamping grooves thereof; a projecting flange which extends form the side of the conductive sheet on one side is guided and limited by a guiding groove on the side of the pressing button. The pressing button passes through the duct which is integrated with the casing and is arranged in a pressing button groove of the base. The casing and the base are assembled in a sheathed way.

Description

Overcurrent release

The utility model relates to a kind of emergency protective device, relates to a kind of protective overload circuit-breakin or rather, can discharge automatically when overcurrent occurring.

In general, it is the two big reasons that cause with electrification that wire short-circuiting and overload are used, and its safeguard measure comprises to be made regular check on circuit and install suitable emergency protective device etc. additional in electric power loop.

Traditional protect measure mostly is the serial connection fuse greatly, though can reach the purpose of due care, because fuse interrupts the power supply supply in the fusing mode, after fixing a breakdown, also need change fuse to reclose circuit.A kind of reusable, the overcurrent release that needn't change operation is arranged; utilize a sheet metal to cooperate two metallic laminas to form the series connection conducting structure; when electric current is excessive; the high heat that circuit produces makes sheet deformation; form the open circuit protection state, after pending fault is got rid of, by hand-reset mechanism store mechanical energy; and sheet metal and two metallic laminas are reclosed, recover power supply and supply with.The design of this overcurrent release be except that can realizing the safeguard protection, and has reusable characteristics, thereby replaced the status of traditional insurance silk in the urgent protection of circuit gradually.

Shown in Figure 1 is the example structure of above-mentioned overcurrent release, also is the enforcement structure of at present traditional overcurrent release, mainly comprises upper and lower casing 10,11, conduit 18, bi-conductive plate 20,21, one sheet metals 26, press button 30, the bolt-lock fixture of spring 32 and necessity etc.Lower house 11 central position have the press button storage tank 12 of installing press button 30 and spring 32, storage tank 12 leading edges have groove 13 with sheathed conduit 18, storage tank 12 both sides then form guide card groove 14,15 respectively, and have keyhole 16,17 to be installed with and fixing bi-conductive plate 20,21.Upper shell 10 cooperates lower house 11 designs, can coat protection to internal structure when upper and lower casing is covered.The guide card 20 front ends contact point 22 that is pivoted, another guide card 21 front ends then have embossing 23.During assembling bi-conductive plate 20,21 is located in respectively in the guide card groove 14,15 of lower house 11 both sides and fixing with rivet 24,25.Be sheathed on spring 32 in the press button 30 and be installed in the press button storage tank 12, make the partition 31 of press button 30 horizontal expansions be overlying on a side guiding plate 20 upper limbs.In the sheet metal 26 1 ends contact point 27 that is pivoted, this sheet metal 26 is overlying on press button 30 tops and two ends contact guide card 20,21 respectively down.The contact point 22 of installing on contact point 27 and the guide card 20 of installing on the sheet metal 26 contacts for activity, sheet metal 26 other ends then form with the embossing part 23 of guide card 21 in the spot welding mode by locating piece 28 and fixedly contact, be enclosed within conduit 18 on the press button 30 again and make edge clipping 19 on it be embedded in the groove 13 of storage tank 12 leading edges and fix, cover upper shell 10 at last and with bolt or rivet 33 upper and lower casings 10,11 that lock.

The circuit breaker of structure shown in Figure 1 is serially connected in the electric power loop; its overcurrent protection is: when normal operating conditions; sheet metal 26 and guide card 20; 21 one-tenth conducting states; press button 30 compresses springs 32 and is hampered by sheet metal 26 by partition 31; the contact point 27 of guide card 20; 22 rear and locating; when causing overcurrent when circuit abnormal; the high heat that produces is impelled sheet metal 26 distortion; its free-ended contact point 27 breaks away from the contact point 22 of guide card 20; this moment, the spacing power of press button 30 disappeared; the restoring force of spring 32 outwards pushes press button, and the guiding restriction of conduit 18 makes press button 30 unlikely disengaging bodies.This moment, the partition 31 of press button 30 just was positioned at 27 of guide card 20 contact points 22 and sheet metal 26 contact points; nonconducting press button 30 isolated sheet metals 26 and guide card 20; form off state; realize safeguard protection; after getting rid of fault, manually push press button 30, spring 32 is compressed once again; the partition 31 of press button 30 breaks away from the contact position of sheet metals 26 and guide card 20, moment sheet metal 26 promptly be adsorbed and form conducting states with guide card 20 again.

The structural design of above-mentioned traditional overcurrent release has many shortcomings, comprising:

1. required parts are too many, carry out overall package by 16 parts as shown in Figure 1, expend man-hour and cost, and economic benefit is low;

2. place the bi-conductive plate of lower house guide card groove, do not have fixture to make its location, utilize the rivet rivet clasp fully, not only note the position correspondence of keyhole in the operation, make rivet clasp simultaneously on small articles, technical difficulty is bigger, and be subject to the structural design of lower house, damage lower house easily;

3. sleeve pipe becomes the separate type package assembly with lower house, not only increased cost of manufacture, and with casing pipe sleeve on press button the time, the edge clipping of sleeve pipe successfully is embedded in the groove of press button storage tank leading edge locate owing to need improving press button, can up pull sheet metal in the operation, its structure of easy damaged not only, and put on sheet metal and can influence the fastness that it combines with the active force of guide card fixed endpoint, even make the two disengaging;

4. many places use rivet to fix in the assembling process, and rivet promptly is difficult for decomposing once rivet clasp, and waste product is increased.

The purpose of this utility model is that overcurrent release shown in Figure 1 is done the architecture advances design, makes the minimizing parts, simplifies assembling procedure, and then reduces manufacturing cost.

Overcurrent release of the present utility model, by housing, be placed in the pedestal that housing is interior, contain the press button storage tank, be positioned two metallic laminas on the base level substrate, be positioned between two metallic laminas and become to fix the sheet metal that reaches movable serial connection state respectively with two metallic laminas, by the conduit of sheathed press button, place the press button of described sheet metal below band partition, hand-reset mechanism and the latching element assembling that spring constitutes to constitute, it is characterized in that:

1) conduit of described sheathed press button is fixedly installed on the front side of described housing;

2) grooved hole on the horizontal base plate of described pedestal press button storage tank both sides, described pedestal back side panel upper limb both sides offer draw-in groove;

3) plug tenon that inserts in the described pedestal slotted eye and the caulking groove of setting in the described pedestal draw-in groove are arranged on the described metallic laminas;

4) described press button side offers guide groove, and the leading edge inboard of a described metallic laminas is extended with and is subjected to press button guide groove guiding, spacing bead.

The utility model is covered the conventional circuit breaker structure by housing up and down assembling mode changes the inside and outside fit mode by housing and pedestal into, aspect the combining of guide card and pedestal, change the rivet clasp mode and set locate mode for plugging, and make sleeve pipe and housing into a single integrated structure, can simplify the design of press button storage tank, reduce unnecessary parts, simplify the production technology except that saving material, and can help assembling

The slotted eye of corresponding position and caulking groove plug respectively and set the location on plug tenon on the guide card and draw-in groove and the pedestal, remove the use of rivet from, can simplify parts and reduce assembly difficulty, the guide groove that the press button side is offered cooperates the bead of respective side guide card side direction projection to realize guiding and spacing, to prevent the spring escape, the press button that is placed in the housing upper conduit is subjected to the external force effect can make the front and back snap action.

The perspective exploded view of accompanying drawing 1. traditional structure overcurrent releases

Accompanying drawing 2. improves the perspective exploded view of structure overcurrent release

The assembling schematic perspective view of parts in the accompanying drawing 3. overcurrent release housings shown in Figure 2

Addressed before Fig. 1 illustrates and repeated no more.

Referring to Fig. 2 and Fig. 3, the overcurrent release that improves structure comprises a housing 40, one pedestals 42, bi-conductive plate 52,53, sheet metal 64, press button 60, spring 63 and latching element.Housing 40 cooperates the back side panel of pedestal 42 to form closed state, with bolt or rivet 67 locking housings 40 and pedestal 42.

The front side of housing 40 extends into conduit 41 for sheathed press button 60, and the rear side of housing 40 is then inserted pedestal 42 for the opening groove confession, and the upper and lower edge of housing 40 is established keyhole 68.

Pedestal 42 is made up of horizontal base plate 43 and vertical back side panel 44, and horizontal base plate 43 central parts form press button storage tank 45 with installing press button 60 and spring 63.Press button storage tank 45 rear sides extend two floors 46 spring 63 is formed the clamping location by back side panel 44.Each grooved hole 47,48 on the substrate 43 of press button storage tank 45 both sides, and become corresponding states, substrate 43 lower edge faces and slotted eye 47,48 corresponding positions offer groove 49.Pedestal 42 back side panels 44 each correspondence of upper limb both sides are offered draw-in groove 50,51, and this slotted eye 47,48 and draw-in groove the 50, the 51st are planted for guide card 52,53 and to be set the location.

Bi-conductive plate 52,53 is low early and high after scalariform lamellar body, a plug tenon 54,55 is extended at the anterior inboard relative position of two guide cards place downwards, the outer fix place of two guide card rear portions height terrace inwardly forms a caulking groove 56,57, guide card plug tenon 54,55 and caulking groove 56,57 are corresponding with pedestal slotted eye 47,48 and draw-in groove 50,51 respectively, guide card 52,53 is fixedly arranged on the pedestal 42, leading edge inner side side direction projection one bead 58 of one side guiding plate 53 is to form guide and limit to press button 60.

The rear side below of press button 60 is the accommodation space of spring 63, and its upper limb one side is formed with partition 61, and opposite side is then offered guide groove 62, and is ccontaining for the bead 58 of guide card 53 side direction projections, plays guiding and position-limiting action.

Above-mentioned each parts are when assembling, earlier press button 60 and spring 63 are sheathed in the storage tank 45 of pedestal 42, sheet metal 64 1 ends form with the embossing part 69 of a side guiding plate 53 in the spot welding mode by locating piece 65 and fixedly contact, sheet metal 64 other ends then contact with the contact point 59 formation activities of guide card 52 by contact point 66, with bi-conductive plate 52,53 and sheet metal 64 place on the pedestal 42 location, guide card 52,53 plug tenon 54,55 are inserted in the slotted eye 47 of pedestal 42, in 48, guide card 52,53 draw-in groove 56,57 are embedded at the caulking groove 50 of pedestal 42, in 51, make plug tenon 54, the tip of 55 lower edges oppositely bends in the groove 49 of pedestal 42, to prevent guide card 52,53 break away from pedestal 42, sheet metal 64 is overlying on press button 60 tops, its movable contact jaw forms barrier effect to the partition 61 of press button 60, make press button 60 and spring 63 restricted location, the bead 58 of guide card 53 then just is positioned at the guide groove 62 of press button 60, play the guiding role when press button 60 flicks.When normality, then form spacing to prevent spring 63 escapes to press button 60.After all parts all are positioned on the pedestal 42, as shown in Figure 3, again pedestal 42 and housing 40 covers are merged with rivet 67 lockings, this moment, press button 60 passed the conduit 41 that housing 40 extends, and then expose at the rear portion of guide card 52,53, for being connected in series with circuit.The circuit breaker of this improvement structure, its operation principle repeats no more with the circuit breaker of traditional structure.

The parts of this improvement structure are reduced to 11, and assembly operation is simplified relatively; Guide card has been exempted riveting process with combining of pedestal reduces technical difficulty; The structural improvement of press button makes press button and also cooperates the bead tool of guide card to lead and limit function except the restriction location that is subjected to sheet metal, and no matter spring all is difficult for escape assembling still in use; The assembling of the fit of housing and pedestal only needs a rivet, than 3 rivets of traditional structure are fixed big improvement is arranged.

Claims (3)

1, a kind of overcurrent release, by housing, be placed in the pedestal that housing is interior, contain the press button storage tank, be positioned two metallic laminas on the base level substrate, be positioned between two metallic laminas and become to fix the sheet metal that reaches movable serial connection state respectively with two metallic laminas, by the conduit of sheathed press button, place the press button of described sheet metal below band partition, hand-reset mechanism and the latching element assembling that spring constitutes to constitute, it is characterized in that:

1) conduit of described sheathed press button is fixedly installed on the front side of described housing;

2) grooved hole on the horizontal base plate of described pedestal press button storage tank both sides, described pedestal back side panel upper limb both sides offer draw-in groove;

3) plug tenon that inserts in the described pedestal slotted eye and the caulking groove of setting in the described pedestal draw-in groove are arranged on the described metallic laminas;

4) described press button side offers guide groove, and the leading edge inboard of a described metallic laminas is extended with and is subjected to press button guide groove guiding, spacing bead.

2, overcurrent release according to claim 1 is characterized in that described metallic laminas is low early and high after scalariform lamellar body.

3, overcurrent release according to claim 1 is characterized in that the lower edge face position corresponding with described slotted eye of described pedestal substrate has groove.

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