CN209328833U - A kind of fuse structure - Google Patents

Abstract

A kind of fuse structure, including mounting a fusable links in the insulation tube of an open at both ends, the both ends of fusable links are fixed in the end cap at insulation tube both ends, and the lower section of end cap is integrally formed a connecting piece, and connection sheet bottom has been downwardly extending pin.Pin is single or multiple pins.Connection sheet is the sheet body of a vertical shape extended downwardly from end cap side, and sheet body lower end is extended with pin.The purpose of this utility model is to provide a kind of fuse structure, it convenient and efficient can be installed on circuit board and stablize use, and structure is simple, processing cost is low.

Description

A kind of fuse structure

Technical field

The utility model relates to electic protection element, more specifically to a kind of fuse structure.

Background technique

Fuse, i.e. fuse, refer to when electric current is more than specified value, so that melt is fused with the heat that itself is generated, break A kind of electric appliance of open circuit.Fuse is widely used in high and low voltage electric distribution system and control system and electrical equipment, as The protector of short circuit and overcurrent is using one of most common protection device.

Fuse in the prior art, structure be usually mounted in the insulation tube of open at both ends a conductive wire or Person's metal tape is as fusable links, and the both ends of conductive wire or metal tape are welded in the end cap at insulation tube both ends, by adding Hot end cap enables scolding tin melting to be coated on and be fixed in end cap behind the end of conductive wire or metal tape or butt-joint Mode is fixed on fusable links in end cap.In general, fuse has two kinds of forms of round tube and square tube, for the fuse of round tube, in Empty insulation tube is cylindrical, and the metal end caps at both ends correspond to cylindrical and are socketed cooperation on insulation tube tube body both ends, leads Electric metal silk or metal tape are connected between two end caps, and the fuse of such round tube is easy to manufacture, because its end cap is even When being connected on insulation tube end, the two is round tube shape structure, therefore need not just be aligned in set termination process.

But the fuse tube body of cylindrical structure is easy for rolling when being mounted on circuit board, pipe shaft and circuit board Fitting contact surface very little, thus can not achieve and be jointly mounted on circuit board well, just deposited during installing and using In inconvenience, therefore circuit board is attached it to, the attachmentes such as fuse pipe clamp, tube socket be usually used, or along metal end caps The external metal pins of central axis, when use metal pins are bent after connect on circuit boards, metal pins pass through scolding tin again and weld It connects on circuit boards, in the production of fuse and is soldered on circuit board in this way and both increases operational sequence.Along metal end caps The technique of the external metal pins of central axis also will appear some problems in the actual operation process.Outside the central axis of metal end caps The technique for connecing metal pins is generally occurred in the form of welding or riveting, and both modes are in process of production if place Bad the phenomenon that just will appear metal pins loosening is managed, metal pins loosening will lead to open circuit or what is fused in advance shows As, or even will appear the serious safety accident of copper cap perforation.For such mounting structure, worker does not allow easy to operate, production efficiency Lowly, pin is also easy to fall off.

And fuse-link and pipe clamp or tube socket carry out matching used mode, pipe clamp is conductively connected fuse-link, pipe clamp installation weldering It is connected on pcb board, pipe clamp is generally directly welded on pcb board by pin again.In existing pipe clamp structure, has and form pipe clamp One can install the pedestal of fuse-link, and pedestal outer end generally has limit film, and cylinder shape for hat fuse-link is prevented to be installed on pipe clamp When, fuse-link, which is vibrated with pipe clamp positional shift or after mounting with use process, leads to the solid offsetting pipe clamp that fuses, and causes not It is powered or improper fusing even causes the abnormal phenomenon such as safety accident after powered up.For such mounting structure, equally more Complexity, and when installation pipe clamp, pipe clamp is also easy to anti-inserted.

In view of this, the designer for above-mentioned fuse structure design on do not attain improve caused by many missings and Inconvenience, and deeply conceive, and actively research improvement has a fling at and develops and design this creation.

Utility model content

The purpose of this utility model is to provide a kind of fuse structure, it convenient and efficient can be installed on circuit board and stablize It uses, and structure is simple, processing cost is low.

In order to achieve the above objectives, the solution of the utility model is:

A kind of fuse structure, including mounting a fusable links in the insulation tube of an open at both ends, the both ends of fusable links are solid Due in the end cap at insulation tube both ends, the lower section of end cap is integrally formed a connecting piece, and connection sheet bottom, which has been downwardly extending, draws Foot.

Further, pin is single or multiple pins.

Further, connection sheet is the sheet body of a vertical shape extended downwardly from end cap side, and sheet body lower end is extended with pin.

Further, connection sheet is one in the integrally formed L shape sheet body in the lower section of end cap comprising one from end cap side to First sheet body of lower extension, the bottom of the first sheet body extend outward to form one second sheet body, and the bottom surface of the second sheet body extends downwardly It is formed with pin.

Further, end cap and connection sheet are metal material, and the direct punch forming of connection sheet is in end cap side.

Further, the both ends of insulation tube are arranged a metal sleeve respectively, and end cap is set on the outside of metal sleeve, each metallic sheath Guan Qi forms an annular surface in the outer end face that end cap bottom surface inner wall contacts, and the both ends of fusable links are contacted with the annular of metal sleeve It is fixed between face and end cap bottom surface inner wall and by scolding tin melting or butt-joint.

Further, fusable links are conductive wire or metal tape.

Further, the both ends of fusable links are welded in the end cap at insulation tube both ends, by heat end cap enable scolding tin melting from And it is fixed in end cap after being coated on the end of fusable links or the mode of butt-joint is fixed on fusable links in end cap.

After adopting the above structure, in the fuse of the utility model, it is integrally formed a connecting piece directly below in end cap, even The pin of contact pin lower end, which is soldered in circuit board, realizes electrical connection, without being piped clamp base etc., saves the peace of cost and fuse Space is filled, structure is simple, and processing cost is low, high production efficiency.And connection sheet also has certain buffer function, also can guarantee and protects Dangerous silk is connected and uses upper stability.

Detailed description of the invention

Fig. 1 is the structural decomposition diagram of the utility model first embodiment；

Fig. 2 is the structural schematic diagram of end cap in the utility model first embodiment；

Fig. 3 is the structural decomposition diagram of the utility model second embodiment；

Fig. 4 is the side view after the combination of the utility model second embodiment；

Fig. 5 is the structural schematic diagram of the end cap in the utility model second embodiment；

Fig. 6 is the side view of end cap in the utility model second embodiment.

Specific embodiment

In order to which the technical solution of the utility model is explained further, below by specific embodiment come to the utility model into Row elaborates.

As shown in Figure 1, the utility model discloses a kind of fuse structure, fuse includes the insulation in an open at both ends A fusable links 2 are mounted in pipe 1, the both ends of fusable links 2 are fixed in the end cap 3 at insulation tube both ends.Wherein, fusable links 2 can be to lead Electric metal silk or metal tape.The both ends of fusable links 2 are welded in the end cap 3 at insulation tube both ends, can enable scolding tin by heating end cap 3 (not shown) melts to be fixed in end cap 3 after being coated on the end of fusable links 2 or the mode of butt-joint makes fusable links 2 It is fixed in end cap 3.

As shown in Figure 1 and Figure 2, in the present embodiment, insulation tube 1 and end cap 3 are circular tube shaped, and end cap 3 includes the side 31 of annular With circular bottom surface 32.Also it can be arranged respectively a metal sleeve 11 at the both ends of insulation tube 1, end cap 3 is set in metal sleeve 11 Outside, each metal sleeve 11 can form an annular surface 111 contact to 3 bottom of end cap in the outer end face of end cap bottom surface inner wall contact at it Face 32, the both ends of fusable links 2 can contact between 32 inner wall of annular surface 111 and end cap bottom surface of metal sleeve 11 and pass through scolding tin Melting or butt-joint are fixed, and fusable links 2 between two end caps 3, are further realized and conducted and being welded in end cap 3.

It being connected on circuit board for convenience of realization end cap, in the utility model, the lower section of end cap is integrally formed a connecting piece, And connection sheet bottom has been downwardly extending pin.Embodiment as shown in Figure 1 and Figure 2, connection sheet are one downward from 3 side of end cap The sheet body 41 of the vertical shape extended, 41 lower end of sheet body is extended with pin 42.Pin 42 can be single or multiple pins, pass through company Contact pin enables pin 42 while being integrally formed below end cap 3, and each pin 42 is soldered on circuit board.The pin of connection sheet lower end 42 are soldered to realization electrical connection in circuit board, and integrally formed connection sheet eliminates collocation pipe clamp tube socket etc. as connection intermediary, Also overcome the problems of the external metal pins of central axis of metal end caps.

It is the second embodiment of the utility model in conjunction with shown in Fig. 3 to Fig. 6, in the present embodiment, connection sheet is one in end cap The integrally formed L shape sheet body 5 in 3 lower section comprising first sheet body 51 extended downwardly from end cap side, the first sheet body 51 Bottom extend outward to form one second sheet body 52, the bottom surface of the second sheet body 52 has been downwardly extending pin 53, and pin 53 welds It is connected on circuit board.End cap 3 and L shape sheet body 5 are metal material, L shape sheet body 5 can directly punch forming in 3 side of end cap.Its In, pin 53 can be soldered on circuit board for single or multiple pins, each pin 53.52 shape of first sheet body 51 and the second sheet body L-shaped sheet body structure can have certain resilient support, it is further provided one due to being formed with a turnover between two sheet bodies Fixed buffer function, thus can guarantee fuse integrally be more stably connected on circuit boards, avoid fuse be easy vibration or Offset.

After adopting the above structure, in the fuse of the utility model, it is integrally formed a connecting piece directly below in end cap, even The pin of contact pin lower end, which is soldered in circuit board, realizes electrical connection, without being piped clamp base etc., saves the peace of cost and fuse Space is filled, the problems of external metal pins of central axis of metal end caps are also overcomed.The utility model structure is simple, greatly Processing cost, high production efficiency, and connection sheet are reduced greatly as connection intermediary also has certain buffer function, also can guarantee Fuse is connected and uses upper stability.

The product form and style of above-described embodiment and schema and non-limiting the utility model, any technical field The appropriate changes or modifications that those of ordinary skill does it all should be regarded as the patent category for not departing from the utility model.

Claims (9)

1. a kind of fuse structure, including mounting a fusable links in the insulation tube of an open at both ends, the both ends of fusable links are fixed In in the end cap at insulation tube both ends, it is characterised in that: the lower section of end cap is integrally formed a connecting piece, and connection sheet bottom extends downwardly It is formed with pin.

2. a kind of fuse structure as described in claim 1, it is characterised in that: pin is single or multiple pins.

3. a kind of fuse structure as claimed in claim 1 or 2, it is characterised in that: connection sheet is one downward from end cap side The sheet body of the vertical shape extended, sheet body lower end is extended with pin.

4. a kind of fuse structure as claimed in claim 1 or 2, it is characterised in that: connection sheet is one in the lower section of end cap one Body formed L shape sheet body comprising first sheet body extended downwardly from end cap side, the bottom of the first sheet body extends outwardly One second sheet body is formed, the bottom surface of the second sheet body has been downwardly extending pin.

5. a kind of fuse structure as claimed in claim 1 or 2, it is characterised in that: end cap and connection sheet are metal material, even The direct punch forming of contact pin is in end cap side.

6. a kind of fuse structure as claimed in claim 1 or 2, it is characterised in that: insulation tube and end cap are circular tube shaped, end cap Side and circular bottom surface including annular.

7. a kind of fuse structure as claimed in claim 6, it is characterised in that: the both ends of insulation tube are arranged a metallic sheath respectively Pipe, end cap are set on the outside of metal sleeve, and each metal sleeve forms an annular in the outer end face of end cap bottom surface inner wall contact at it Face, the both ends of fusable links are contacted between the annular surface of metal sleeve and end cap bottom surface inner wall and by scolding tin melting or butt-joints It is fixed.

8. a kind of fuse structure as claimed in claim 1 or 7, it is characterised in that: fusable links are conductive wire or metal Band.

9. a kind of fuse structure as claimed in claim 8, it is characterised in that: the both ends of fusable links are welded on insulation tube both ends End cap on, enable scolding tin melting by heating end cap to be coated on and be fixed in end cap behind the ends of fusable links or butt-joint Mode is fixed on fusable links in end cap.