High-insulation small clapping type electromagnetic relay

Abstract

The invention discloses a high-insulation small clapping type electromagnetic relay, which comprises a coil frame, coil leading-out pins, an iron core and a static spring part, wherein the coil frameis provided with a wire winding shaft used for winding an enamelled wire; the iron core comprises a core shaft and a pole face arranged on the upper end of the core shaft; the core shaft of the iron core is cooperated in the center hole of the wire winding shaft of the coil frame; the coil leading-out pins are arranged on one side, which corresponds to one width side of the coil frame, of the lower flange of the coil frame; and the static spring part is inserted into the other side, which corresponds to the width of the coil frame, of the upper flange and the lower flange of the coil frame; and the wire winding shaft is subjected to offset arrangement. After the structure is adopted, on the basis of increasing no product volume, an interval between the coil and the static spring is enlarged to increase a creep distance between the coil and the static spring, the voltage endurance capability of the product is effectively improved, and in addition, the electromagnetic relay has the characteristics that manufacture difficulty can be reduced, working procedures are reduced, manufacture cost is lowered, and the electromagnetic relay is convenient for realizing assembling automation andproduct miniaturization.

Description

technical field [0001] The invention relates to the technical field of relays, in particular to a high-insulation small snap-fit ​​electromagnetic relay. Background technique [0002] The snap-fit ​​magnetic circuit structure is a classic structure widely used in the relay industry. Because this structure is relatively simple and the manufacturing difficulty is relatively low, it is suitable for relays of different sizes and loads. But at the same time, due to the limitation of structure, this kind of relay also has the disadvantage of poor insulation performance, especially on small products, due to the limitation of size and space, it is more obvious. [0003] A kind of small clap type electromagnetic relay of prior art, as Figure 1 to Figure 4 As shown, the relay includes a coil frame 101 , a yoke 102 , an iron core 103 , a moving spring armature part 104 , a normally open static spring 105 , a normally closed static spring 106 and a casing 107 . Coil frame 101, as the ...

AI Technical Summary

Problems solved by technology

One is to wrap a whole circle of tape on the coil and the coil lead-out terminal to increase the degree of insulation between the coil (that is, the enameled wire) and the yoke and the reed; however, this method of wrapping the surface of the coil enameled wire with tape, On the one hand, there is a risk of breaking the enameled wire, on the other hand, the cost will increase due to the increase in materials and manufacturing processes; the other is to install an insulating sheet between the coil and the yoke to improve the degree of insulation between the coil and the yoke However, this way of installing insulating sheets between the coil and the yoke iron is difficult to assemble and it is difficult to ensure the consistency of the insulation effect; secondly, it is necessary to reserve space for assembling the insulating sheets, which will affect the winding of the enameled wire The space is not conducive to improving the performance of the product; the third is that it is difficult to solve the insufficient insulation distance between the coil lead-out terminal and the reed; the fourth is that increasing the material and manufacturing process will lead to an increase in cost

Moreover, neither of these two solutions can solve the problem of foreign matter at the contact position and insulation drop during use

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