Cavity safety device and manufacturing method thereof
A safety device and cavity technology, applied in the field of fuses, can solve problems such as unreliable connection between the metal wire and the external metallization layer, uneven extrusion of residual glue on the inner wall of the cavity, and uneven groove walls at both ends.
Inactive Publication Date: 2017-11-24
DA TECH
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Problems solved by technology
[0010] In view of the above situation, the present invention provides a cavity safety device and its manufacturing method, by forming the metal wire in the existing cavity safety device into a metal layer structure with both ends being sheet-like, and combining the two The technical solution of forming grooves by end processing solves the technical problems of layer deviation and extension that are easily caused by lamination and pressing in the prior art (the inner wall of the cavity is not smooth due to the extrusion of residual glue, the groove walls of the grooves at both ends Unevenness, etc.), while solving the technical problem of unreliable connection between the metal wire and the external metallization layer, to enhance and ensure the reliability of the connection between the metal core (wire, metal layer) of the cavity safety device and the external metallization layer Beneficial technical effect
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[0044] To facilitate the understanding of the present invention, the following in conjunction with the accompanying drawings Figure 4 to Figure 9 and the first to fourth embodiments will be described.
[0045] Please refer to the first to fourth embodiments of the present invention in order Figure 4 , Figure 6 , Figure 8 and Figure 9 , the present invention provides a cavity safety device, which mainly includes two insulating surfaces 20 and a metal core 40 disposed between the insulating surfaces 20; the surface of the insulating surface 20 facing the metal core 40 is defined as the inner surface , the face away from the metal core 40 is the outside; wherein, an insulating layer 30 with an opening 31 in the middle region (such as Figure 4 , Figure 6 ), to form a cavity defined inside the cavity insurance device through the inner surface of the insulating surface layer 20, the opening 31 of the insulating layer 30 and the thickness of the adhesive layer 50 after bo...
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The invention provides a cavity safety device and a manufacturing method thereof. A metal wire in an existing cavity safety device is formed into a metal layer structure with the two sheet-shaped ends, and the technical scheme that lamination is conducted and then grooves are formed in the two ends is used, so that the layer deflection and extending technical problems such as extrusion of a cavity inner wall, uneven adhesion residues and uneven walls of the grooves in the two ends are likely to happen because stacking and lamination are conducted after punching are solved, meanwhile, the technical problem that connection between the metal wire and an external metallization layer is not firm is solved, and the device has the advantage that the reliability of connection between a metal core (the metal wire and a metal layer) of the cavity safety device and the external metallization layer is enhanced and ensured.
Description
technical field [0001] The invention relates to the technical field of fuses, in particular to a cavity fuse made by circuit board technology and a manufacturing method thereof. Background technique [0002] General electrical devices will set the maximum operating current. When the used electricity exceeds, the device may be damaged or burned. The main function of the fuse is to prevent excessive current from passing through the electronic circuit. When the excess current flows through the fuse, it will Make it generate high temperature and cause fusing to protect the circuit from damage. In the existing electrical devices such as information, communication and consumer electronics products, the electronic components are mainly connected together by using printed circuit boards (PCBs) to make them function as a whole. As electrical devices become more and more Complicated, more and more parts are needed, and the lines and parts on the printed circuit board are becoming mor...
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IPC IPC(8): H01H85/046H01H69/02
CPCH01H85/046H01H69/022
Inventor 俞东
Owner DA TECH