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A surface mount fuse and its manufacturing method

A surface mount, fuse technology, used in fuse manufacturing, emergency protection devices, circuits, etc., can solve problems such as high fuse dimensional tolerance requirements, fuse body rupture, damage to circuit components, etc., to increase anchorage Effect and adhesion strength, shorten arc extinguishing time, improve production efficiency

Active Publication Date: 2020-03-31
AEM COMPONENTS (SUZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the structure is sealed with an explosion-proof layer, the dimensional tolerance requirements for each part of the fuse structure are relatively high, and the production process is relatively complicated.
In addition, this structure is not ideal for extinguishing the arc formed after the fuse is blown, which may cause the rupture of the fuse body during overcurrent, and even damage the protected circuit and surrounding circuit components

Method used

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  • A surface mount fuse and its manufacturing method
  • A surface mount fuse and its manufacturing method
  • A surface mount fuse and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Such as figure 1 As shown, this embodiment provides a surface mount fuse, which includes: an insulating case 1 with one side inwardly recessed to form a receiving cavity; two conductive electrodes 24 and a fuse part 23 arranged between the conductive electrodes 24 The fuse body, the fuse part 23 is located in the accommodating cavity, and the fuse part 23 is a part of two groups of fuse bodies with a narrow cross-section, and the two groups form a rhombus in this embodiment. The two conductive electrodes 24 extend out of the accommodating cavity, are bent along the ends of a pair of side walls of the insulating housing 1 and attached to the ends, and then bent and extended to the outer edges of the pair of side walls. together; the arc extinguishing part includes an arc extinguishing material (not shown in the figure), which covers the fuse part 23 and fills the accommodating cavity; the arc extinguishing material contains metal hydrate / hydrous silicate mineral / One or...

Embodiment 2

[0068] Such as Figure 3-4 As shown, this embodiment provides a surface mount fuse, which includes: an insulating case 1 with one side inwardly recessed to form a receiving cavity; two conductive electrodes 24 and a fuse part 23 arranged between the conductive electrodes 24 The main body of the fuse, the fuse part 23 is located in the accommodating cavity, the fuse part in this embodiment is two narrow pieces parallel to each other; two conductive electrodes 24 extend out of the accommodating cavity, along the insulating housing 1 The ends of a pair of side walls are bent and attached to the ends, and then bent and extended to the outer edges of the pair of side walls; two conductive electrodes 24 are respectively from the outlet of the accommodating cavity to the The inner top wall of the accommodating chamber extends and bends back toward the outlet to form an anchoring portion 26, and then the two conductive electrodes 24 are fixedly connected to both ends of the fuse porti...

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Abstract

The invention discloses a surface mount fuse, which comprises an insulating housing with an accommodating cavity formed in a side thereof, a fuse body including two conductive electrodes and a fuse part, and an arc-extinguishing part covering the fuse part. The fuse part is located in the accommodating cavity. The two conductive electrodes have an anchoring part in the accommodating cavity, and the conductive electrodes extend out of the accommodating cavity. The arc-extinguishing part comprises an arc-extinguishing material. The arc-extinguishing material contains one or more of metal hydrate / hydrous silicate minerals / hydrous aluminosilicate minerals. The fuse body is a metal piece integrally formed with a conductive metal material. The surface of the fuse body is covered with a thin layer composed of a low melting point metal. The invention also provides two manufacturing methods of the surface mount fuse; the surface mount fuse of the invention greatly shortens the time of arc extinguishing, and avoids the problems of secondary arcing, burning and the like as well as the occurrence of situations of a fuse such as cracking, blowing off and board burning in the fusing process.

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 usually used as circuit protection devices and are electrically connected to the components to be protected in the circuit. A type of fuse that includes a fuse body disposed within a hollow insulating housing that melts and interrupts the circuit when a fault condition, such as an overcurrent condition, occurs in the circuit to prevent damage to the protected component or circuit. In the past, the fuse, the melt and the end cap for welding are in a separate structure. On the one hand, the structure of the fuse is more complicated and the production cost is higher. Poor contact occurs, affecting the normal operation of the circuit. [0003] Patent CN201320839953 discloses a chip fuse structure, which includes a metal sheet containing a fuse line and welding e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H69/02H01H85/40H01H85/06
CPCH01H69/02H01H85/06H01H85/40
Inventor 李向明刘莎
Owner AEM COMPONENTS (SUZHOU) CO LTD