Electromagnetic relay coil frame and manufacturing method thereof

Abstract

The invention discloses an electromagnetic relay coil support and a manufacture method thereof. The coil support comprises a coil support body in which a terminal hole for mounting a coil terminal is arranged; the terminal hole is of a half-blind hole structure which is composed of a cylindrical main hole, a cylindrical surface-layer entity and at least two side holes, wherein the surface-layer entity and the main hole are identical in diameter, the surface-layer entity is connected to one end of the main hole to seal the opening of the end of the main hole, the at least side holes surround the surface-layer entity and contact the same, and one end of each side hole communicates with external while the other end of each side hole is connected to the periphery of the main hole to communicate with the main hole. According to the electromagnetic relay coil support, relative dimensional accuracy of the coil support terminal hole can be improved, and the disadvantages that, in a plug-in mounting process, the coil terminal generates flocks which may enter the relay to cause pollution is avoided..

Description

technical field [0001] The invention relates to an electromagnetic relay, in particular to an electromagnetic relay coil frame capable of inserting coil terminals and a manufacturing method thereof. Background technique [0002] At present, with the improvement of people's living standards, the application of color TVs, air conditioners, refrigerators, washing machines, water heaters, soymilk machines and other household appliances is becoming more and more common, and there is a trend of gradual promotion to small towns and rural areas; in North America, Western Europe, etc. In developed foreign countries, in addition to the above-mentioned general household appliances, high-end household appliances such as automatic dishwashers, electric heating carpets, and electronic massagers have basically entered the ordinary family. [0003] With the continuous advancement of technology, home appliance manufacturers, in order to improve production efficiency, automatically assemble e...

AI Technical Summary

Problems solved by technology

like Figure 6 to Figure 10 As shown, the upper mold insert 21 and the lower mold insert 22 of the mold are used to make the blind hole structure of the coil frame. The core 221 of the lower mold insert 22 does not push into the notch of the upper mold insert 21, and the coil The terminal hole 23 used to assemble the coil terminal in the frame 20 is a fully blind hole structure. Because the core 221 of the mold is not completely positioned in this structure, the core 221 is likely to be skewed during the injection molding process, resulting in misalignment of the terminal hole 23 of the coil frame. , after the terminal hole 23 is installed into the coil terminal, the relative dimensional accuracy of the coil terminal is low, resulting in skewed pins of the finished relay, causing poor welding when the manufacturer uses it, and making the circuit board scrapped

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