Title:
PROXIMITY SENSOR
Document Type and Number:
Japanese Patent JP2018174067
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a proximity sensor excellent in mass-productiveness, and capable of circumventing detection malfunction due to floating objects in the air, such as raindrop, fog, or the like.SOLUTION: A proximity sensor 1 includes a cable 2 for sensor having first and second electrode wires 21, 22 provided in parallel, an insulator 23 covering the first and second electrode wires 21, 22 collectively, and a coating 24 covering the insulator 23, and a shield 3 having an opening 31, and covering the cable 2 for sensor partially. The cable 2 for sensor is fixed to the shield 3 so that the first and second electrode wires 21, 22 have a range difference for the opening 31, and detects contact of a detection body 4 by the difference of a first capacity C1 detected by the first electrode wire 21 and a second capacity C2 detected by the second electrode wire 22.SELECTED DRAWING: Figure 1
Inventors:
NAKATANI KATSUTOSHI
KOMANO HARUYASU
YASUJIMA KENJI
AKIMOTO KATSUYA
KOMANO HARUYASU
YASUJIMA KENJI
AKIMOTO KATSUYA
Application Number:
JP2017071031A
Publication Date:
November 08, 2018
Filing Date:
March 31, 2017
Export Citation:
Assignee:
HITACHI METALS LTD
International Classes:
H01H36/00; B60J5/00