CN209912803U

CN209912803U - Alloy type temperature fuse structure

Info

Publication number: CN209912803U
Application number: CN201920776785.XU
Authority: CN
Inventors: 郭先宁
Original assignee: Shenzhen Lanson Electronics Co Ltd
Current assignee: Shenzhen Lanson Electronics Co Ltd
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2020-01-07
Anticipated expiration: 2029-05-27

Abstract

The utility model provides an alloy type temperature fuse structure, including shell and two conductive electrode, the bottom of two conductive electrode meets and forms the route between two conductive electrode and the low-melting point alloy silk through the low-melting point alloy silk, be equipped with the inner shell between the middle part of two conductive electrode, be equipped with two sand grips along left and right directions interval from top to bottom on the front surface in the outside of inner shell and the rear surface, the front surface in the inboard of shell and rear surface are equipped with two recesses along left and right directions interval from top to bottom, two conductive electrode from the top down insert establish in the shell and the recess on the front surface in the inner shell outside and the rear surface and the sand grip looks adaptation on the inboard front surface of shell and the rear surface. The utility model has the advantages of safe and reliable, reasonable in design, the cost of manufacture is low, simple structure promotes easily and produces.

Description

Alloy type temperature fuse structure

Technical Field

The utility model belongs to the technical field of the fuse, concretely relates to alloy type temperature fuse structure.

Background

The traditional alloy type temperature fuse is mostly applied to small-power electronic products such as mobile phone chargers, power adapters, small household appliances, electronic toys and the like, and can provide over-temperature protection for the products. In the use process, when overcurrent and overheat occur, if power supply is cut off in time, the damage of battery explosion and the like can be caused, and the property and life safety of people is seriously threatened. However, the traditional product has the following defects that no groove is arranged inside the insulating shell opening: the low-melting-point alloy wire is arranged in the insulating shell, and the fluxing agent is arranged around the low-melting-point alloy wire, so that the low-melting-point alloy wire is easy to overflow from the joint of the insulating shell and the sealing resin under high temperature and environmental conditions, and the function failure of the temperature fuse is caused, or the liquid low-melting-point alloy overflowing from the product body can cause the harm to other electrical appliance elements or circuits; the sealing resin and the insulating shell can not be tightly combined, and the sealing resin is easy to loosen from the insulating shell, so that the product characteristics and the production yield of the product are influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the weak point among the prior art, provide a simple structure, reasonable in design, the fluxing agent is difficult for overflowing, and the security performance is high, low in manufacturing cost's an alloy type temperature fuse structure.

In order to solve the technical problem, the utility model adopts the following technical scheme:

an alloy type temperature fuse structure comprises an outer shell and two conductive electrodes, wherein the bottom ends of the two conductive electrodes are connected through a low-melting-point alloy wire, a passage is formed between the two conductive electrodes and the low-melting-point alloy wire, an inner shell is arranged between the middle parts of the two conductive electrodes, two convex strips are arranged on the front surface and the rear surface of the outer side of the inner shell at intervals from top to bottom along the left-right direction, two grooves are arranged on the front surface and the rear surface of the inner side of the outer shell at intervals from top to bottom along the left-right direction, the two conductive electrodes are inserted into the outer shell from top to bottom, and the grooves on the front surface and the rear surface of the outer side of the inner;

preferably, the outer shell is filled with sealing resin, the sealing resin is positioned on the two conductive electrodes above the inner shell in the outer shell, and the raised lines are both composed of the sealing resin;

preferably, the two grooves on the front surface and the rear surface of the inner side of the shell are arched along the shape of the front and rear sections;

preferably, the low-melting-point alloy wire is filled with flux around the low-melting-point alloy wire in the case.

Adopt above-mentioned technical scheme, the utility model discloses following beneficial effect has:

(1) the utility model discloses a shape on the section is bow-shaped along the front and back on two recesses on the front surface and the rear surface of the inboard shell, be equipped with two sand grips along left and right direction interval from top to bottom on the front surface and the rear surface of the outside of inner shell, the front surface and the rear surface of the inboard of shell are equipped with two recesses along left and right direction interval from top to bottom, two conductive electrodes from top to bottom insert establish in the shell and the recess on the front surface and the rear surface of the outside of inner shell is with the sand grip on the front surface and the rear surface of the inboard shell looks adaptation, the shell intussuseption is filled with sealing resin, sealing resin is located on two conductive electrodes of the top of the inside inner shell of shell, the sand grip comprises sealing resin, two recesses on the front surface and the rear surface of the inboard shell are bow-shaped along the shape on front and back section and make sealing resin and shell more closely laminate, avoid fluxing agent or low melting point alloy silk in, the utility model has the advantages of more safety and reliability when in use, reasonable design and low manufacturing cost, and the utility model has simple structure, is easier to be popularized and produced, and indirectly improves the production efficiency when in production;

(2) when the temperature is too high during use, the low-melting-point alloy wire is converted into liquid, and then the molten alloy is shrunk into clusters and attached to the surfaces of the two conductive electrodes, so that the effect of completely cutting off the circuit protection circuit is achieved;

to sum up, the utility model has the advantages of safe and reliable, reasonable in design, the cost of manufacture is low, simple structure promotes easily and produces.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

As shown in fig. 1, the utility model discloses an alloy type temperature fuse structure, including shell 1 and two conductive electrode 2, the bottom of two conductive electrode 2 meets and forms the route between two conductive electrode 2 and the low melting point alloy silk 3 through low melting point alloy silk 3, be equipped with inner shell 4 between the middle part of two conductive electrode 2, be equipped with two sand grips 5 along left and right direction upper and lower interval on the front surface of the outside of inner shell 4 and the rear surface, the front surface of the inboard of shell 1 and rear surface are equipped with two recesses 6 along left and right direction upper and lower interval, two conductive electrode 2 from the top down insert in shell 1 and the recess 6 on the front surface of the outside of inner shell 4 and the back surface are with the sand grip 5 looks adaptation on the front surface of the inboard of shell 1 and the back surface;

the outer shell 1 is filled with sealing resin 7, the sealing resin 7 is positioned on the two conductive electrodes 2 above the inner shell 4 in the outer shell 1, and the raised lines 5 are both composed of the sealing resin 7;

the two grooves 6 on the front surface and the rear surface of the inner side of the shell 1 are in an arc shape along the shape of the front and rear sections;

the low-melting-point alloy wire 3 in the case 1 is filled with flux 8.

The utility model discloses a concrete use as follows:

when the utility model is used, the bottom ends of two conductive electrodes 2 are connected through the low-melting-point alloy wire 3, a passage is formed between the two conductive electrodes 2 and the low-melting-point alloy wire 3, the inner shell 4 is sleeved between the middle parts of the two conductive electrodes 2, then the two conductive electrodes 2 are inserted into the outer shell 1, the two conductive electrodes 2 are inserted into the outer shell 1 from top to bottom, the grooves 6 on the front surface and the rear surface of the outer side of the inner shell 4 are matched with the convex strips 5 on the front surface and the rear surface of the inner side of the outer shell 1, then the outer shell 1 is filled with the sealing resin 7, the sealing resin 7 is positioned on the two conductive electrodes 2 above the inner shell 4 in the outer shell 1, and then the periphery of the low-melting-point alloy wire 3 in the outer shell 1 is filled with the fluxing;

when the utility model discloses a when operational environment temperature was too high, low melting point alloy silk 3 can melt, and low melting point alloy silk 3 turns into liquid back, and fused alloy shrink is reunited and is attached to two conductive electrode 2's surface, has played the effect of cutting off circuit protection circuit completely.

The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any form, and all of the technical matters of the present invention belong to the protection scope of the present invention to any simple modification, equivalent change and modification made by the above embodiments.

Claims

1. An alloy type temperature fuse structure is characterized in that: including shell and two conductive electrode, the bottom of two conductive electrode meets and forms the route between two conductive electrode and the low-melting point alloy silk through low-melting point alloy silk, be equipped with the inner shell between the middle part of two conductive electrode, be equipped with two sand grips along left and right directions interval from top to bottom on the front surface in the outside of inner shell and the rear surface, the front surface of the inboard of shell and rear surface are equipped with two recesses along left and right directions interval from top to bottom, two conductive electrode from the top down insert establish in the shell and the front surface in the inner shell outside and the recess on the rear surface and the sand grip looks adaptation on the inboard front surface of shell and the rear surface.

2. An alloy type thermal fuse structure according to claim 1, wherein: the shell is filled with sealing resin, the sealing resin is positioned on the two conductive electrodes above the inner shell in the shell, and the raised lines are formed by the sealing resin.

3. An alloy type thermal fuse structure according to claim 1, wherein: the two grooves on the front and rear surfaces of the inside of the housing are arcuate in shape along the front and rear cross-sections.

4. An alloy type thermal fuse structure according to claim 1, wherein: and a fluxing agent is filled around the low-melting-point alloy wire in the shell.