Floating ball type water level switch

Abstract

The invention relates to a floating ball type water level switch. The floating ball type water level switch comprises a fixing base, a magnetic reed switch and a floating ball; the fixing base includes a bottom plate and a frame structure on the bottom plate; the center of the upper end surface of the bottom plate is provided with magnets; two sides of the lower end surface of the bottom plate are respectively provided with a guide tube; two ends of the magnetic reed switch are connected with two lead-out wires through crimping terminals; the floating ball is provided with two floating supports; the upper parts of the two floating supports are inserted into the guide tubes at the two sides of the lower end surface of the bottom plate of the fixing base; the two floating supports on the floating ball are connected with the guide tubes at the lower end surface of the bottom plate of the fixing base through a buckling mode; the center of the lower end surface of the bottom plate of the fixing base is provided with an accommodating groove; the magnetic reed switch, the crimping terminals connected with the two ends of the magnetic reed switch and the two lead-out wires are embedded in the accommodating groove, and secondary plastic injection is carried out, so that an integral structure can be formed, and the magnetic reed switch is located below the magnets; and the two lead-out wires extend out from the front end surface of the bottom plate of the fixing base. According to an existing structure, a reed switch is fixed through glue pouring, and as a result, processing procedures are complex, a cycle is long, and the reed switch must be dried by a baking box, and the detect of relatively high cost will be brought about, while, with the floating ball type water level switch adopted, the above detect can be eliminated.

Description

technical field [0001] The invention relates to a water level switch, in particular to a float type water level switch. Background technique [0002] A sensor made of a reed switch (also known as a reed switch or a reed switch) is one of the simplest sensor structures. The advantages of reed switches (magnetic reed switches) are their small size and light weight, which makes them easy to install and unobtrusive. The operating switch is very small, thus eliminating the need for cumbersome cams or cranks, so there is no metal fatigue associated with metal degradation at all, ensuring virtually unlimited mechanical life. Moreover, it can be installed in an extremely limited space, making it ideal for miniaturized equipment. Reed switches, and suitable magnets, are cheap and readily available. The switching components of the magnetic reed switch are hermetically sealed in an inert gas atmosphere and will never be in contact with the external environment, which greatly reduces...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a floating ball water level switch, which solves the disadvantages of using glue to fix the reed switch in the past structure, which has a complicated process, a long cycle, oven drying, and relatively high cost.

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