Liquid level detector

Abstract

A liquid level detector includes a casing, a float, a magnet body, and a switch mechanism. The casing is fixed to the container and includes a tube section extending along a gravity direction. The float floats on the surface of liquid and is displaced upward or downward along the gravity direction, being guided by the tube section. The magnet body is held by the float to be displaced upward or downward in conformity with the surface of liquid. The switch mechanism is accommodated in the tube section and is switched between its on-state and off-state by the upward or downward displacement of the magnet body. The casing includes a first casing part and a second casing part. The first casing part includes the tube section, a first locking section that is formed radially outward of the tube section, and a first guide section that is formed at a tip of the tube section in its extending direction. The second casing part includes a second locking section that supports the first casing part by engagement with the first locking section, and a second guide section that generates rotative force around the tube section to guide the first casing part toward a normal location where the first locking section is capable of engaging with the second locking section, by contact of the second guide section with the first guide section.

Dependencies are inferred from the claim text.