| 摘要 |
The present invention relates to a non-contact type rotary positioning sensor which can accurately measure the magnitude of the magnetism caused by the rotation of a rotating body by eliminating the imbalance of the magnetism that can be generated due to the eccentricity of the rotating body, by sensing with one hall element the magnitude of magnetism detected by two sensing bars located in different places. The non-contact type rotary positioning sensor (1) consists of a housing (30) with a receipt seat (32) formed on the bottom, a cover (20) with sensor mounting holes (22) and through hole (24) for covering the housing (30), a rotating body (40) whose one end seats on the receipt seat (32) of the housing (30) and whose flange (44) in the middle is joined to the circumference of the through hole (24) of the cover (20) to be supported in a rotatable manner within the housing (30) and whose top end is formed with a coupling slot (42a), a rotary shaft (10) whose one end is coupled with the rotating body (40) by a coupling protuberance (12) inserted into the coupling slot (42a) and whose other end is coupled with the rotary object to be measured, a permanent magnet (50) inserted into the base of the rotating body (40), sensing bars (60) and (62) placed in parallel around the base of the rotating body (40) to detect the location of the permanent magnet (50), and a PCB (70) placed in the housing (30) so as to join with the sensing bars (60) and (62) by interposing a hall element (72). |
