CN207503904U - Composite multi-functional fuse - Google Patents

Abstract

The utility model provides a kind of composite multi-functional fuse, it includes insulation tube, fusible conductor, resistance wire and two pins, insulation tube is equipped with a through-hole, fusible conductor is set in through-hole and extends along through-hole, one end of fusible conductor is electrically connected by conductive fixing piece with one end of resistance wire, the other end of fusible conductor is electrically connected with a pin, and the other end of resistance wire is electrically connected with another pin, is sealed in insulation tube outer wrapping insulating layer and is exposed two pins.The composite multi-functional fuse of the utility model is by the way that Thermal Cutoffs and resistance series connection are integrated on same insulation tube, and small product size is very small, is suitble to electronic miniaturization development trend, and cost is lower, and installation is also simpler.

Description

Composite multi-functional fuse

【Technical field】

The utility model is related to fuse technologies field, particularly a kind of fuses to overcurrent, excess temperature duplicate protection.

【Background technology】

Various electronics and electric equipment products are widely used in people live, and this kind of product in use often can be by Lead to short circuit in reasons such as overcurrent, overheats and circuit made to be damaged, and influence the normal use of product, in order to prevent because The inrush current that is generated when powering on, internal temperature rise and lasting overcurrent etc. and occurrence of equipment failure, in circuit Power input setting protection device carry out protection power source circuit.In general, it will usually by Thermal Cutoffs conducting wire and electricity Resistance series connection forms protection circuit.Develop now with electrical equipment toward microminaturization, integrated function is more and more, and structure is also got over Come it is more complicated, and need part it is also more and more, the circuit and electronic component on circuit board are also more and more intensive, then circuit The circuit of substrate is intended to miniaturization, and thing followed electronic component must also be miniaturized, the volume mistake of above-mentioned protection circuit Greatly, requirement can not be met.

【Utility model content】

It is multi-functional that the purpose of this utility model is to provide a kind of new type compound that the above problem can effectively be overcome to occur Fuse, integrated level is high, compact, and installation is simpler.

What the purpose of this utility model was realized in：It connects including insulation tube, fusible conductor, resistance wire and two Foot, the insulation tube are equipped with a through-hole, and the fusible conductor is set in the through-hole and extends along the through-hole, described fusible to lead One end of body is electrically connected by conductive fixing piece with one end of the resistance wire, described in the other end of the fusible conductor and one Pin is electrically connected, and the other end of the resistance wire is electrically connected with pin another described, in the insulation tube outer wrapping insulating layer It seals and exposes two pins.

In above structure, the through-hole has the first aperture and the second aperture, and first aperture is set on the insulation The end face of pipe, second aperture are set on the circumferential surface of the insulation tube.

In above structure, the resistance wire winds the insulation tube setting.

In above structure, the both ends of the insulation tube are respectively equipped with an electrode cap, and two pins are respectively arranged on two On a electrode cap, one end of the fusible conductor is stretched out from second aperture and is electrically connected with an electrode cap, The conduction fixing piece is interference fitted with second aperture and fixes the fusible conductor, one end of the resistance wire and institute It states conductive fixing piece to be fixedly connected, the other end of the resistance wire is electrically connected with another electrode cap.

In above structure, the conduction fixing piece is copper rivet.

In above structure, what the insulation tube made for ceramic material.

In above structure, fluxing agent is filled between the through-hole and the fusible conductor.

In above structure, the material of the fusible conductor is fusible alloy.

In above structure, the insulating layer makes for the material of epoxy resin.

The utility model is by the way that Thermal Cutoffs and resistance series connection are integrated on same insulation tube, and small product size is very It is small, it is suitble to electronic miniaturization development trend, cost is lower, and installation is also simpler.

【Description of the drawings】

The utility model is described in further detail below in conjunction with the accompanying drawings

Fig. 1 is the utility model composite multi-functional fuse schematic cross-sectional view

In figure：10, insulation tube；11, through-hole；111, the first aperture；112, the second aperture；12, fluxing agent；20, it is fusible to lead Body；30, resistance wire；40, pin；50, electrode cap；60, conductive fixing piece；70, insulating layer.

【Specific embodiment】

Below in conjunction with the accompanying drawings and specific embodiment is further described the utility model：

As shown in Figure 1, the utility model includes insulation tube 10, fusible conductor 20, resistance wire 30 and two pins 40, absolutely The cylinder that edge pipe 10 makes for ceramic material.Fusible conductor 20 is linear, and material is fusible alloy.Insulation tube 10 is equipped with one Through-hole 11, through-hole 11 have the first aperture 111 and the second aperture 112, and the first aperture 111 is set on the end face of insulation tube 10 Center, the second aperture 112 are set on the circumferential surface at 10 middle part of insulation tube.Fusible conductor 20 is set in through-hole 11 and extends along through-hole 11, Fluxing agent 12 is filled between through-hole 11 and fusible conductor 20.Fluxing agent 12 can help fusible conductor 20 more rapidly and completely Disconnecting circuit.The both ends of insulation tube 10 are respectively equipped with an electrode cap 50, and two pins 40 are respectively arranged on two electrode caps 50, Pin 40 can connect fixation by a variety of methods such as welding and spot welding.It is stretched from the second aperture 112 one end of fusible conductor 20 Go out and bending is electrically connected with an electrode cap 50, the other end of fusible conductor 20 passes through conductive fixing piece 60 and resistance wire 30 One end is electrically connected, and conductive fixing piece 60 is copper rivet.The other end of resistance wire 30 is electrically connected with another electrode cap 50, can be passed through Welding and a variety of methods such as spot welding connect fixation.Conductive fixing piece 60 is interference fitted with the second aperture 112 and is led fusible Body 20 is fixed, and is sealed in 10 outer wrapping insulating layer 70 of insulation tube and is exposed two pins 40.Specifically, insulating layer 70 is ring The material of oxygen resin makes.

During making, first fusible conductor 20 is put into from the first aperture 111 in through-hole 11, one end of fusible conductor 20 is from first It is stretched out at aperture 111, the other end of fusible conductor 20 can be seen from the second aperture 112.Then at the first aperture of bending 111 Fusible conductor 20 is simultaneously allowed on the end face for being tightly attached to insulation tube 10.Then conductive fixing piece 60 is riveted at the second aperture 112 Enter in through-hole 11, one end of conductive fixing piece 60 squeezes fusible conductor 20 and is allowed to fix and be electrically connected, other end protrusion In 10 peripheral surface of insulation tube.The electrode cap 50 of pin 40, the electricity at the first aperture 111 are carried on the both ends of insulation tube 10 are fixed Polar cap 50 is contacted and is electrically connected with fusible conductor 20, and one end of resistance wire 30 is connected to conduction by way of electric welding later The protruding end of fixing piece 60, remaining wire body are wound to the end of insulation tube 10, and the end of resistance wire 30 is by way of electric welding It is connect with electrode cap 50.The last insulating layer 70 for wrapping up epoxy resin again.

The foregoing is merely this patent preferred embodiments, not limit this patent range, every using specification and attached The equivalent structure or equivalent flow shift that figure content is made directly or indirectly is used in other relevant technical fields, belongs to The scope of this patent.

Claims (9)

1. a kind of composite multi-functional fuse, it includes insulation tube, fusible conductor, resistance wire and two pins, described exhausted Edge pipe is equipped with a through-hole, and the fusible conductor is set in the through-hole and extends along the through-hole, one end of the fusible conductor It is electrically connected by conductive fixing piece with one end of the resistance wire, the other end of the fusible conductor is electrically connected with a pin It connects, the other end of the resistance wire is electrically connected with pin another described, is sealed and is made in the insulation tube outer wrapping insulating layer Two pins are exposed.

2. composite multi-functional fuse as described in claim 1, it is characterized in that：The through-hole has the first aperture and the Two apertures, first aperture are set on the end face of the insulation tube, and second aperture is set on the circumferential surface of the insulation tube.

3. composite multi-functional fuse as claimed in claim 2, it is characterized in that：The resistance wire winds the insulation tube and sets It puts.

4. composite multi-functional fuse as claimed in claim 3, it is characterized in that：The both ends of the insulation tube are respectively equipped with one A electrode cap, two pins are respectively arranged on two electrode caps, and one end of the fusible conductor is from second hole Mouthful stretch out simultaneously be electrically connected with an electrode cap, it is described conduction fixing piece and second aperture be interference fitted and incite somebody to action described in can Molten conductor is fixed, and one end of the resistance wire is fixedly connected with the conductive fixing piece, the other end of the resistance wire with it is another The electrode cap electrical connection.

5. the composite multi-functional fuse as described in any one of claim 1-4, it is characterized in that：It is described conduction fixing piece be Copper rivet.

6. composite multi-functional fuse as claimed in claim 5, it is characterized in that：The insulation tube makes for ceramic material 's.

7. composite multi-functional fuse as claimed in claim 6, it is characterized in that：Between the through-hole and the fusible conductor Filled with fluxing agent.

8. composite multi-functional fuse as claimed in claim 7, it is characterized in that：The material of the fusible conductor is easily fusion Gold.

9. composite multi-functional fuse as claimed in claim 8, it is characterized in that：The insulating layer is the material of epoxy resin It makes.