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Surface-mounted fuse and manufacturing method thereof

A technology of surface mount and fuse, applied in the field of surface mount fuse and its manufacture, can solve the problem of poor arc extinguishing effect, achieve the effect of saving solder, reliable conduction and fusing performance, and ensure insulation isolation

Active Publication Date: 2021-05-07
AEM COMPONENTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Additionally, the fusible conductor wound around a core of flexible material substantially fills the insulating housing cavity of tubular fuses, especially miniature fuses, generally without or Only a small amount of arc extinguishing material is filled, and the arc extinguishing effect is poor

Method used

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  • Surface-mounted fuse and manufacturing method thereof
  • Surface-mounted fuse and manufacturing method thereof
  • Surface-mounted fuse and manufacturing method thereof

Examples

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Embodiment 1

[0035] Such as Figure 1-2 As mentioned above, this embodiment provides a surface mount fuse, which includes a terminal electrode 3, a fuse 2, and an insulating case 1 with one side recessed inwardly to form a housing cavity 4, and the fuse 2 is arranged in the housing cavity 4 The two terminal electrodes 3 are arranged opposite to each other at the opening of the accommodating cavity 4, each terminal electrode 3 includes a conductive portion 32 and a connecting portion 31, and the two connecting portions 31 of the two terminal electrodes 3 are located on the same horizontal plane for connecting with the external The conductive part 32 for electrical connection of the circuit is arranged outside the accommodating cavity 4 , and the connecting parts 31 for connecting with the fuse 2 are arranged in the accommodating cavity 4 , and each connecting part 31 extends along a horizontal plane. The fuse 2 includes a fuse body 21 and two extensions 22 respectively arranged at both ends...

Embodiment 2

[0048] The difference from Embodiment 1 is that, as Figure 4 As shown, the arc extinguishing agent in this embodiment is a solid granular arc extinguishing material. At this time, the opening of the accommodating cavity 4 is sealed with the insulating cover 7 and the sealant 8 . Specifically, it contains one or more of metal hydrates, hydrous silicate minerals, and hydrous aluminosilicate minerals, and the filler also includes a binder.

[0049] Since different arc extinguishing agents are used in this embodiment, the filling of arc extinguishing agents in its manufacturing method is also different. Specifically, in the method for manufacturing a surface mount fuse in this embodiment, the step S5 is: filling the accommodating chamber 4 of the insulating case 1 with an arc extinguishing agent, the arc extinguishing agent being a solid granular arc extinguishing material, The opening of the accommodating chamber is sealed with an insulating cover 7 and a sealant 8 .

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Abstract

The invention provides a surface-mounted fuse. The fuse comprises terminal electrodes, a fuse wire and an insulating shell, one side of the insulating shell sinks inwards to form a containing cavity, the fuse wire is arranged in the containing cavity, the two terminal electrodes are oppositely arranged at an opening of the containing cavity, each terminal electrode comprises a conductive part and a connecting part, each conductive part used for being electrically connected with an external circuit is arranged outside the containing cavity, each connecting part used for being connected with the fuse wire is arranged in the containing cavity, each connecting part extends along the horizontal plane, the fuse wire comprises a fuse wire body and two extending parts arranged at the two ends of the fuse wire body in the length direction respectively, the fuse main body is spiral, a cavity is formed in the fuse main body, each extending part extends along a horizontal plane, and the two extending parts are fixedly connected and attached to the two connecting parts at the corresponding positions. The invention further provides a manufacturing method of the surface-mounted fuse. According to the scheme, the effective winding length of the fuse wire is controlled while the welding flux is saved, so that the resistance stability and the fusing consistency of the fuse are improved.

Description

technical field [0001] The invention relates to the field of electrical protection components, and in particular provides a surface mount fuse and a manufacturing method thereof. Background technique [0002] Fuses are generally used as circuit protection devices and form an electrical connection with the components to be protected in the circuit. A tubular fuse, including a fuse body arranged in a tubular insulating case, and conductive metal end caps at both ends, when a fault condition such as an overcurrent condition occurs in a circuit, the fuse body can melt and interrupt the circuit to Avoid damage to protected components or circuits. [0003] A tubular fuse as disclosed in CA2046380, the melt used in the tubular fuse comprises a fusible conductor wound outside a core of flexible material such as fiberglass. Compared with the linear fusible conductor with the same axial length, the helical fusible conductor after winding can provide greater resistance and heat load....

Claims

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Application Information

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IPC IPC(8): H01H85/05H01H85/041H01H85/055H01H69/02
CPCH01H85/05H01H85/041H01H85/055H01H69/02
Inventor 刘莎张国荣胡建伟
Owner AEM COMPONENTS