| 摘要 |
PURPOSE: A combination structure of an MR sensor is provided to minutely adjust a gap of the MR sensor through a bolt by directly confirming output of the MR sensor in a state that the MR sensor is attached to an MR sensor holder. CONSTITUTION: A plurality of coupling pins(111) of an MR(Magnetic Resistor) sensor holder(110) are coupled with a plurality of coupling holes(141) of a PCB(Printed Circuit Board)(140) before the coupling pins are bent, so that the MR sensor holder is fixed on the PCB. In this state, an MR sensor(120) is mounted at the MR sensor holder. A plurality of terminals(121) of the MR sensor are exposed to the outside through a rear surface of the MR sensor holder. The terminals of the MR sensor are soldered with patterns formed on the PCB. A bolt(130) is screwed into a first bolt hole(113) of the MR sensor holder. A capstan motor(150) is rotated to confirm a signal output through the terminal. If the output signal is small, the bolt is tighten up to move the MR sensor to a front for adjusting a gap. If the output signal is large, the bolt is unscrewed for adjusting the gap. If the gap adjustment is completed, the MR sensor holder, the MR sensor, and the bolt are bonded by an adhesive to be fixed.
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