Disturbing magnetic field generator and card reader
AssigneeNidec Sankyo Corporation
InventorHirotaka Sakamaki
Life of this patent
Estimating the term…
Abstract
Provided are a disturbing magnetic field generator and a card reader capable of suppressing the generation of noise caused by vibration of a core. A disturbing magnetic field generator that generates a disturbing magnetic field for disturbing unauthorized reading of magnetic data recorded on a card includes a coil to generate the disturbing magnetic field, a bobbin including a tubular body part in which the coil is wound on an outer peripheral side, and a core disposed inside the tubular body part. A first gap is provided between the tubular body part and the core.
Claims15
A disturbing magnetic field generator configured to generate a disturbing magnetic field for disturbing unauthorized reading of magnetic data recorded on a card, the disturbing magnetic field generator comprising:
- a coil configured to generate the disturbing magnetic field;
- a bobbin comprising a tubular body part in which the coil is wound on an outer peripheral side of the tubular body part;
- a core disposed inside the tubular body part, wherein a first gap is provided between the tubular body part and the core;
- and
- a soft adhesive in the first gap, and bonding the tubular body part and the core.
A disturbing magnetic field generator configured to generate a disturbing magnetic field for disturbing unauthorized reading of magnetic data recorded on a card, the disturbing magnetic field generator comprising:
- a coil configured to generate the disturbing magnetic field;
- a bobbin comprising:
- a tubular body part in which the coil is wound on an outer peripheral side of the tubular body part, and
- a plurality of projection parts;
- a core disposed inside the tubular body part;
- and
- a circuit board disposed so as to overlap the coil and fixed to the bobbin via the plurality of projection parts, wherein the circuit board comprises a circuit configured to feed the coil,
- wherein a gap is provided between the circuit board and the coil.
A card reader comprising:
- a card insertion part provided with an insertion slot through which a card is inserted;
- and
- a disturbing magnetic field generator configured to generate a disturbing magnetic field for disturbing unauthorized reading of magnetic data recorded on the card, the disturbing magnetic field generator comprising:
- a coil configured to generate the disturbing magnetic field,
- a bobbin comprising
- a tubular body part in which the coil is wound on an outer peripheral side of the tubular body part, and
- a plurality of projection parts,
- a case in which the coil and a core are housed inside, and
- a circuit board overlapping the coil and fixed to the bobbin via the plurality of projection parts, wherein the circuit board comprises a circuit configured to feed the coil,
- wherein the card insertion part comprises a case housing part in which the case is housed inside, and
- wherein the case is housed in the case housing part in such a manner that an outer wall of the case and an inner wall of the case housing part face each other via a gap in an extending direction of the core.
Dependencies are inferred from the claim text.