Coil end connection method

Abstract

The invention provides a coil end joining method. In the coil product, the coil end and terminal parts are simply, fast reliablely connected by using the laser welding mechanism, accordingly reducing the cost of the coil product. The method embeds in a ferrite resin to shape and expose the terminal parts (2) and each part of the armature (3) combined with this terminal parts (2) and buried in a substrate (4), and at the same time, the substrate (4) a roll portion (5) are unified, and then reels the coils (6) on the said roll portion (5) to form a coil component (7). The method is characterized in that: one portion of the said terminal parts buried in the said substrate (4) are exposing horizontally towards one side of the substrate (4); and the terminal parts (2) of the exposion portion is opened with a patchhole (9) through an inner edge flange processing; the end (6a) of the said coil (6) is inserted into the patchhole (9); and the end (6a) of the said coil (6) and the inner edge flange processing portion of the said terminal parts (2) are welded together contemporarily by using the laser welding.

Description

technical field [0001] The invention relates to a coil end connection method, in particular to a coil end connection method using a laser welding mechanism to weld a coil and a terminal. Background technique [0002] Conventionally, as such a coil end connection method, the method described in the applicant's prior application document 1 (JP 2005-158825, FIGS. 1 to 5 and paragraphs 0024 to 0028) is known. In the inductor coil of the surface mount component disclosed in this document 1, the ferrite bobbin core on which the coil is wound is embedded in the ferrite shield ring, and the portion having the shield ring is sandwiched and fixed to the inductor coil. The fixed part on the upper part and the terminal part of the wire winding part arranged at the predetermined position of the inductance coil are installed on the inductance coil, and the terminal part is made of a metal plate with a predetermined width, and the fixed part On one upper edge side of the letter-shaped por...

AI Technical Summary

Problems solved by technology

[0004] The structure of the terminal member described in the above-mentioned Patent Document 1 is extremely complicated, and in order to wind the lead wire around the terminal without completely melting the lead wire, the terminal located above the lead wire is made into a circular shape and laser welded, so it is very difficult. It is difficult to reduce the profile, and it takes labor and time to wind the wire, which is the main cause of high cost. At the same time, it has the disadvantage that it is not suitable for the profile of the coil product.

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