The invention provides an integrated type miniaturized round proximity switch. The integrated type miniaturized round proximity switch comprises a
metal outer shell (1), a minitype inductive
transducer, a switching circuit board, a socket (7), a micro
inductive type approach
transducer and switching circuit components, wherein the maximum outer
diameter of the
metal outer shell (1) is smaller than 23mm, the minitype inductive
transducer is arranged in the
metal outer shell (1) and is provided with a coil
assembly (3), and the socket (7) is fixedly connected at the
tail end of the metal outer shell. The micro
inductive type approach transducer is formed by an inductive coil
assembly (2) and an iron core, the opening end of the iron core is tightly attached to the inner bottom (9) of the metal outer shell of an inductive head, the inductive coil
assembly is electrically connected with a switching circuit through two coil lead wires (4), the switching circuit components are composed of a receiving circuit board (5) and a
voltage-stabilized source board (6), the switching circuit components are regarded at a unified independent body and are pasted and solidified in a rear cavity (10) of the metal outer shell through insulation glue. According to the integrated type miniaturized round proximity switch, the independent inductive transducer, an independent
electronic component and an independent power source component are regarded as the unified independent body, the size is smaller than that of an independent miniaturized proximity switch in the prior art, and the size and the weight of a control box are reduced for a carrier.