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JAMMING MAGNETIC FIELD GENERATION DEVICE AND CARD READER

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  • Title:
    JAMMING MAGNETIC FIELD GENERATION DEVICE AND CARD READER
  • Author: SAKAMAKI HIROTAKA
  • Subjects: CALCULATING ; COMPUTING ; COUNTING ; HANDLING RECORD CARRIERS ; PHYSICS ; PRESENTATION OF DATA ; RECOGNITION OF DATA ; RECORD CARRIERS
  • Description: To provide a jamming magnetic field generation device and card reader that can suppress occurrence of noise caused by oscillation of a core.SOLUTION: In a jamming magnetic field generation device to be used in a card reader, a first gap G1 is provided between a cylindrical trunk part 150 of a bobbin 15 and a core 11, and the cylindrical trunk part 150 and the core 11 are adhered by a soft adhesive R1 provided in the first gap G1. A second gap G2 is provided between a coil 12 and a circuit substrate 13, and the circuit substrate 13 and the coil 12 are adhered by soft adhesive R2 provided in the second gap G2. Third gaps G31 and G32 are provided between a case 16 and an inner wall 48 of a case storage part 40 in an extending direction of the core 11 in which oscillation is apt to be transmitted, and the case 16 and the inner wall 48 of the case storage part 40 are adhered by soft adhesive R3 provided in the third gaps G31 and G32.SELECTED DRAWING: Figure 3 【課題】コアの振動を原因とする騒音の発生を抑制することのできる妨害磁界発生装置、およびカードリーダを提供すること。【解決手段】カードリーダに用いる妨害磁界発生装置では、ボビン１５の筒状胴部１５０とコア１１との間に第１隙間Ｇ１が設けられ、筒状胴部１５０とコア１１とは、第１隙間Ｇ１に設けられた軟質の接着剤Ｒ１によって接着されている。コイル１２と回路基板１３との間に第２隙間Ｇ２が設けられ、回路基板１３とコイル１２とは、第２隙間Ｇ２に設けられた軟質の接着剤Ｒ２によって接着されている。振動が伝達されやすいコア１１の延在方向では、ケース１６とケース収容部４０の内壁４８との間に第３隙間Ｇ３１、Ｇ３２が設けられ、ケース１６とケース収容部４０の内壁４８とは、第３隙間Ｇ３１、Ｇ３２に設けられた軟質の接着剤Ｒ３によって接着されている。【選択図】図３
  • Creation Date: 2022
  • Language: English;Japanese
  • Source: esp@cenet
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