EP2966655B1 - Bobine d'antenne - Google Patents

Bobine d'antenne Download PDF

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Publication number
EP2966655B1
EP2966655B1 EP15180569.4A EP15180569A EP2966655B1 EP 2966655 B1 EP2966655 B1 EP 2966655B1 EP 15180569 A EP15180569 A EP 15180569A EP 2966655 B1 EP2966655 B1 EP 2966655B1
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EP
European Patent Office
Prior art keywords
axis
section
winding
leg section
sections
Prior art date
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Active
Application number
EP15180569.4A
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German (de)
English (en)
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EP2966655A3 (fr
EP2966655A2 (fr
Inventor
Tsuyoshi Sato
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Sumida Corp
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Sumida Corp
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Publication date
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Priority to DE15180569.4T priority Critical patent/DE15180569T1/de
Publication of EP2966655A2 publication Critical patent/EP2966655A2/fr
Publication of EP2966655A3 publication Critical patent/EP2966655A3/fr
Application granted granted Critical
Publication of EP2966655B1 publication Critical patent/EP2966655B1/fr
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
    • H01Q1/3233—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems
    • H01Q1/3241—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems particular used in keyless entry systems
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00944—Details of construction or manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/04—Fixed inductances of the signal type  with magnetic core
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/306—Fastening or mounting coils or windings on core, casing or other support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/02—Coils wound on non-magnetic supports, e.g. formers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F2003/005—Magnetic cores for receiving several windings with perpendicular axes, e.g. for antennae or inductive power transfer

Definitions

  • the present invention relates to an antenna coil in which coils are wound at least in the X-axis and Y-axis directions crossing each other.
  • the antenna coil As an example of the antenna coil, a type is known which is mounted in a remote controller for unlocking and locking a keyless entry system used in an automobile or a house. In recent years, it has been demanded to improve the sensitivity of the antenna coil in order to enable the information to be more surely exchanged between the controller and the control unit on the side of the automobile or the house. On the other hand, the demand for miniaturization of the antenna coil has also been increased in order to improve portability for the user.
  • FIG. 1 to FIG. 3 show an antenna coil in which a Y-axis winding wire is superposed and wound around the outer periphery of an X-axis winding wire so as to make the axis lines of the windings orthogonal to each other.
  • FIG. 4 to FIG. 6 show an antenna coil in which an X-axis winding wire and a Y-axis winding wire are wound around a cross-shaped core.
  • FIG. 12 shows an antenna coil in which an X-axis winding wire and a Y-axis winding wire are wound around a cross-shaped core in such an inclined manner that the number of turns of each of the winding wires is increased toward the outer periphery of the cross-shaped core.
  • the antenna coil which is disclosed in Japanese Laid-Open Patent Publication No. 2003-92509 , and in which the Y-axis winding wire is superposed and wound around the outer periphery of the X-axis winding wire so as to make the axis lines of the windings orthogonal to each other, has a problem that the tension at the time of winding may be intensively applied between the coil wires so as to damage the insulating coating on the coil surface, and that, when the core wire of the coil wire is exposed, a short circuit is caused in the coil so as to deteriorate the antenna characteristics.
  • the height of the antenna coil in the Z-axis direction that is, the thickness dimension of the antenna coil is increased, which becomes an obstacle when the antenna coil as a whole is miniaturized into a flat shape.
  • the space between the X-axis and Y-axis winding wires adjacent to each other is increased from the intersection toward the outer side of the cross core, so that the spaces of the corner portions between the X-axis and Y-axis winding wires are useless.
  • the X-axis winding wire and the Y-axis winding wire are respectively wound in such an inclined manner that the number of turns of each of the windings is increased toward the outer side of the cross core, the winding work for successively increasing the number of turns is complicated and difficult, and collapse of winding wire may occur.
  • An object of the present invention is to provide an antenna coil which is capable of attaining both the improvement of antenna characteristics and the miniaturization of the antenna coil and to provide a method for manufacturing such a coil.
  • an antenna coil according to the present invention includes a core member having an X-axis leg section and a Y axis leg section which respectively protrude in the X-axis and the Y-axis directions from the intersection of the core member, and an X-axis winding wire and a Y-axis winding wire which are respectively wound around the outer periphery of the X-axis leg section and the Y-axis leg section, and is featured in that at least one of an X-axis winding frame section for the X-axis winding wire, which frame section is provided at the X-axis leg section, and a Y-axis winding frame section for the Y-axis winding wire, which frame section is provided at the Y-axis leg section, includes an intermediate flange section for separating the winding frame section into at least two winding frame sections for different winding shapes.
  • the core member is configured so that the X-axis leg section and the Y-axis leg section are formed into a cross shape in which the X-axis and Y-axis leg sections intersect each other at the midpoint thereof.
  • the X-axis leg section has the X-axis winding frame sections on both sides of the midpoint of the X-axis leg section
  • the Y-axis leg section has the Y-axis winding frame sections on both sides of the midpoint of the Y-axis leg section
  • each of the X-axis winding frame section and the Y-axis winding frame section is provided with the intermediate flange section, and each of the winding flange sections is formed into the plurality of winding frame sections separated from each other by the intermediate flange section.
  • the core member is formed into a T-shape in which the X-axis leg section and the Y-axis leg section are made to cross each other at the end of one of the X-axis leg section and the Y-axis leg section.
  • the intermediate flange section may be formed into a plate-shaped intermediate flange section made of the core member.
  • an outer flange section made of the core member is provided at the outer end of the X-axis leg section and the Y-axis leg section so as to be in parallel with the intermediate flange section.
  • the inner winding wire wound around the inner winding frame section provided on the inner side of the intermediate flange section is wound with a smaller number of turns
  • the outer winding wire wound around the outer winding frame section provided on the outer side of the intermediate flange section is wound with a larger number of turns
  • the width of the X-axis leg section and the Y-axis leg section is made smaller in the inner winding section corresponding to the inner winding frame section provided on the inner side of the intermediate flange section, and is made larger in the outer winding section corresponding to the outer winding frame section provided on the outer side of the intermediate flange section.
  • a Z-axis winding wire is wound around the peripheral portion of the antenna coil in the peripheral direction.
  • the winding frame sections separated by the intermediate flange section are configured such that at least either the number of turns of the winding or the cross-sectional area of the core member is different between the winding frame sections.
  • FIG. 1 and FIG. 2 show a three-dimensional antenna unit 1A having an antenna coil 10 according to a first embodiment of the present invention.
  • the left and right direction in FIG. 1 is the X-axis direction
  • the vertical direction in FIG. 1 is the Y-axis direction
  • the left and right direction (front and rear direction) in FIG. 2 is the Z-axis direction.
  • the antenna coil 10 includes: a cross-shaped core member 2 which has an X-axis leg section 21 protruding in the X-axis direction from an intersection 2s located at the center portion (midpoint) of the core member 2, and a Y-axis leg section 22 protruding in the Y-axis direction from the intersection 2s; four X-axis base members 30 which are made of an insulating material and respectively attached to both side ends of the X-axis leg sections 21 of the core member 2; four Y-axis base members 40 which are made of the insulating material and respectively attached to both side ends of the Y-axis leg sections 22 of the core member 2; X-axis winding frame sections 3 which are formed around the outer periphery of the X-axis leg section 21 by the core member 2 and the X-axis base member 30; Y-axis winding frame sections 4 which are formed around the outer periphery of the Y-axis leg section 22 by the core member 2 and the Y-axi
  • a Z-axis winding wire 7 is wound around the peripheral portion of the antenna coil 10 in the peripheral direction, and terminal sections 9 (see FIG. 2 ) are respectively provided at the X-axis base member 30 and the Y-axis base member 40. Further, as required, the outer periphery is covered with a resin molding or housed in a case, so that the three-dimensional antenna unit 1A is formed.
  • the core member 2 is formed into the cross shape in such a manner that the X-axis leg section 21 having an I-shape (rod shape) and the Y-axis leg section 22 (see FIG. 2 ) having the same I-shape (rod shape) are combined together in the front and rear direction at the intersection 2s located at the midpoint of the leg sections.
  • the X-axis leg section 21 and the Y-axis leg section 22 have the same shape, and hence the configuration of the Y-axis leg section 22 will be described with reference to FIG. 2 .
  • intersection 22s located at the midpoint of the Y-axis leg section 22 is deviated to the front surface side so as to be formed in a plate shape for connecting the upper and lower Y-axis winding frame sections 4.
  • Inner flange sections 22t and 22t extending in the front and rear direction are successively provided on both sides (upper and lower sides in FIG. 2 ) of the intersection 22s.
  • a recessed section 22f is formed behind the intersection 22s by the inner flange sections 22t and 22t protruding in the rear direction.
  • Inner winding sections 22a and 22a serving as winding shaft portions are successively provided on the outer side of the inner flange sections 22t and 22t.
  • the inner winding sections 22a and 22a are formed to have a width (X-axis direction length) slightly smaller than the width of the intersection 22s.
  • outer winding sections 22b and 22b are successively provided so that step sections are formed on both sides of each of the outer winding sections 22b and 22b.
  • outer flanges 22c and 22c are successively provided so as to have the same X-axis direction width as and a larger Z-axis direction thickness than the outer winding section 22b.
  • a recessed core section 22d extending in the X-axis direction for winding the Z-axis winding wire 7 is provided.
  • the X-axis leg section 21 has the same shape as the shape of the Y-axis leg section 22. On both sides of an intersection 21s located at the midpoint of the X-axis leg section 21, inner flange sections 21t and 21t, inner winding sections 21a and 21a, outer winding sections 21 band 21b, and outer flanges 21c and 21c are successively provided in this order, and a recessed section 21d is provided in each of the outer flanges 21c and 21 c.
  • the core member 2 is configured in such a way that the X-axis leg section 21, which is inverted front-to-back and rotated by 90 degrees with respect to the Y-axis leg section 22, is combined with the Y-axis leg section 22 by inserting the intersection 21s (see FIG. 2 ) located at the midpoint of the X-axis leg section 21 into the recessed section 22f provided on the rear surface side of the intersection 22s of the Y-axis leg section 22 from the rear surface side of the intersection 22s.
  • the X-axis base member 30 having an intermediate flange section 31 is attached to both ends of the X-axis leg section 21 from the rear surface side, the X-axis winding wires 5a and 5b are wound, while after the Y-axis base member 40 having an intermediate flange section 41 is attached to both ends of both ends of the Y-axis leg section 22 from the rear surface side, the Y-axis winding wires 6a and 6b are wound.
  • the X-axis base member 30 and the Y-axis base member 40 have approximately the same shape, and hence the configuration of the Y-axis base member 40 will be described with reference to FIG. 1 and FIG. 2 .
  • the Y-axis base member 40 has, at the outer side end thereof, a substrate section 42 which is brought into contact with the rear surface of the outer flange 22c of the Y-axis leg section 22. Also, outer frame sections 43 located on both sides of the outer flange 22c of the Y-axis leg section 22 are provided on both X-axis direction sides of the substrate section 42.
  • the outer frame section 43 has a recessed section 43a for winding the Z-axis winding wire, which recessed section is formed so as to be connected to the recessed core section 22d of the outer flanges 22c.
  • the side bottom surface of the recessed section 43a is formed into a taper surface 43b which is inclined inward so as to be directed to an adjacent taper surface 33b of the X-axis base member 30.
  • the X-axis base member 30 is formed to have a substrate section (not shown), an outer frame section 33, an outer winding frame 34 described below, the intermediate flange section 31, an inner winding frame 3S, and an inner flange 36.
  • Rod-shaped outer winding frames 44 extending along both sides of the outer winding section 22b of the Y-axis leg section 22 are successively provided on the inner side of the outer frame section 43 of the Y-axis base member 40.
  • the intermediate flange section 41 is successively provided on the inner side of the outer winding frame 44.
  • a rod-shaped inner winding frames 45 extending along both sides of the inner winding section 22a of the Y-axis leg section 22 is successively provided on the inner side of the intermediate flange section 41.
  • an inner flange 46 is successively provided at the inner end portion of the inner winding frame 45.
  • the intermediate flange section 41 is a member for separating the inner winding section 22a and the outer winding section 22b of the Y-axis leg section 22, that is, a member for separating the Y-axis winding frame section 4 into an inner winding frame section 4a and an outer winding frame section 4b.
  • the intermediate flange section 41 has an opening on the central front surface side thereof, and the inner winding section 22a of the Y-axis leg section 22 is inserted through the opening.
  • the inner flange 46 is extended in the front and rear direction along both the side surfaces of the inner flange section 22t of the Y-axis leg section 22, so as to form a winding flange on the inner side of the inner winding frame section 4a.
  • the outer winding frame 44 and the inner winding frame 45 are respectively extended in the axial direction of the Y-axis leg section 22 along the side surfaces of the outer winding section 22b and the inner winding section 22a of the Y-axis leg section 22.
  • the front and rear surfaces of the outer and inner winding sections 22b and 22a of the Y-axis leg section 22 are opened by not providing the outer winding frame 44 and the inner winding frame 45, so that the Y-axis winding wires 6a and 6b described below are respectively wound around the outer and inner winding sections 22b and 22a.
  • the Y-axis base members 40 and 40 are provided respectively on both sides of the Y-axis leg section 22, and the Y-axis winding frame sections 4 and 4 are formed on both sides of the intersection 2s. Further, the intermediate flange sections 41 and 41 are provided, and thereby each of the Y-axis winding frame sections 4 and 4 is formed to be separated into a pair of the inner winding frame sections 4a and 4a and a pair of the outer winding frame sections 4b and 4b.
  • the Y-axis winding wires (inner winding wires) 6a and 6a are respectively wound around the inner winding frame sections 4a and 4a respectively formed around the inner winding sections 22a and 22a, on both sides of which the inner winding frames 45 and 45 are located.
  • the Y-axis winding wire (outer winding wires) 6b and 6b are respectively wound around the outer winding frame sections 4b and 4b respectively formed around the outer winding sections 22b and 22b, on both sides of which the outer winding frames 44 and 44 are located.
  • the inner winding wire 6a is wound around the inner winding frame section 4a which, in the space formed by the intermediate flange section 41 and the inner flange 46 of the Y-axis base member 40, and by the inner flange section 22t, is formed by the outer periphery of the exposed front and rear surfaces of the inner winding section 22a of the Y-axis leg section 22 and the outer periphery of the inner winding frames 45 formed on both sides of the inner winding section 22a.
  • the outer winding wire 5b is wound around the outer winding frame section 4b which, in the space formed by the outer flange 43 of the Y-axis base member 40, the outer flange 22c of the Y-axis leg section 22, and the intermediate flange section 41, is formed by the outer periphery of the exposed front and rear surfaces of the outer winding section 22b of the Y-axis leg section 22 and the outer periphery of the outer winding frames 44 formed on both sides of the outer winding section 22b.
  • the X-axis base members 30 and 30 are attached respectively on both sides of the X-axis leg section 21, and then the X-axis winding frame sections 3 and 3 are similarly formed on both sides of the intersection 2s.
  • the intermediate flange sections 31 and 31 are provided so that inner winding frame sections 3a and 3a and outer winding frame sections 3b and 3b are respectively formed so as to allow the inner winding frame section 3a to be separated from the outer winding frame section 3b.
  • the X-axis winding wires 5a and 5b inner winding wire and outer winding wire
  • intersection 21s located at the midpoint of the X-axis leg section 21 around which the X-axis winding wires 5a and 5b are wound as described above, and the intersection 22s located at the midpoint of the Y-axis leg section 22 around which the Y-axis winding wires 6a and 6b are wound, are combined with each other in the front and rear direction so that a cross shape is formed so as to allow both the rear surfaces of the X-axis base member 30 and of the Y-axis base member 40 to be located on the same plane.
  • the Z-axis winding wire 7 is wound around the recessed (core) sections 21d, 22d, 33a and 43a of the outer flanges 21c, 22c, 33 and 43 formed respectively at the outer periphery of the X-axis leg section 21, the Y-axis leg section 22, the X-axis base member 30, and the Y-axis base member 40. Then, the outer periphery of the Z-axis winding wire 7 is covered with a resin molding or housed in a case as required, so that the three-dimensional antenna unit 1A is formed.
  • each of the end portions of the X-axis winding wires 5a and 5b, the Y-axis winding wires 6a and 6b, and the Z-axis winding wire 7 is connected to each of the predetermine terminal sections 9.
  • the inner winding wires 5a and 6a and the outer winding wires 5b and 6b are formed so that any of the winding dimensions of the inner winding wire 5a and 6a, which dimensions include the inner peripheral dimension, the outer peripheral dimension, and the winding cross-sectional area, is smaller than any of the winding dimensions of the outer winding wire 5b and 6b.
  • the X-axis winding wires 5a and 5b and the Y-axis winding wires 6a and 6b are separated into the inner winding frame sections 3a and 4a and the outer winding frame sections 3b and 4b so that the winding frame shape (inner and outer peripheral dimensions) of the inner winding frame sections 3a and 4a is different from the winding frame shape of the outer winding frame sections 3b and 4b.
  • the X-axis winding wire 5a and 5b and the Y-axis winding wire 6a and 6b are arranged by effectively utilizing the inner space, so that the miniaturization of the three-dimensional antenna unit 1A is realized.
  • the antenna characteristics is improved by increasing the number of turns of the X-axis winding wire 5a and 5b and the Y-axis winding wire 6a and 6b and further by increasing the core cross-sectional area of the X-axis leg section 21 and the Y-axis leg section 22.
  • Second to fourth embodiments shown in FIG. 3A , FIG. 3B to FIG. 5A , and FIG. 5B show typical configuration examples in which the antenna characteristics (sensitivity performance, and the like) of antenna coils 11 to 13 are improved. That is, in order to improve the antenna characteristics, it is effective means to increase the number of turns of the winding or to increase the cross-sectional area of the core, as described above. Accordingly, the second embodiment shown in FIG. 3A and FIG. 3B is an example in which the antenna characteristics are improved by increasing the number of turns of the winding, and the third embodiment shown in FIG. 4A and FIG. 4B is an example in which the antenna characteristics are improved by increasing the core cross-sectional area. Further, the fourth embodiment shown in FIG. 5A and FIG. 5B is an example in which the antenna characteristics are improved by increasing the number of turns of the winding and the core cross-sectional area.
  • a core member 2 is formed into a cross shape having an intersection 2s, a rectangular plate-shaped X-axis leg section 21 protruding in the X-axis (right and left) direction from both sides of the intersection 2s, and a rectangular plate-shaped Y-axis leg section 22 protruding in the Y-axis (vertical) direction from both sides of the intersection 2s.
  • An X-axis winding frame section 3 formed around the outer periphery of the X-axis leg section 21 is divided into an inner winding frame section 3a and an outer winding frame section 3b by a plate-shaped intermediate flange section 31 made of an insulating material and provided in an intermediate portion of the X-axis leg section 21, while a Y-axis winding frame section 4 formed around the outer periphery of the Y-axis leg section 22 is divided into an inner winding frame section 4a and an outer winding frame section 4b by a plate-shaped intermediate flange section 41 made of an insulating material and provided in an intermediate portion of the Y-axis winding frame section 4.
  • the intermediate flange sections 31 and 41 are provided so as to extend in the Z-axis direction perpendicular to the respective protruding directions of the X-axis leg section 21 and the Y-axis leg section 22. Further, a rectangular-shaped outer flange 23 made of an insulating material is provided to surround the outer end portions of the X-axis leg section 21 and the Y-axis leg section 22 so as to connect the outer end portions with each other.
  • X-axis winding wires 5a and 5b are wound around the X-axis winding frame section 3 formed around the outer periphery of the X-axis leg section 21.
  • the inner winding wire 5a and the outer winding wire 5b are respectively wound around the inner winding frame section 3a and the outer winding frame section 3b which are divided from each other by the intermediate flange section 31.
  • Y-axis winding wires 6a and 6b are wound around the Y-axis winding frame section 4 formed around the outer periphery of the Y-axis leg section 22.
  • the inner winding wire 6a and the outer winding wire 6b are respectively wound around the inner winding frame section 4a and the outer winding frame section 4b which are divided from each other by the intermediate flange section 41.
  • the inner winding wires 5a and 6a respectively wound around the inner winding frame sections 3a and 4a, each of which is provided between each of the intermediate flange sections 31 and 41 and the intersection 2s of the core member 2 located on the inner side of the intermediate flange sections 31 and 41, are wound with a small number of turns so as not to interfere with each other.
  • outer winding wires 5b and 6b respectively wound around the outer winding frame sections 3b and 4b, each of which is provided between each of the intermediate flange sections 31 and 41 and the outer flange 23 located on the outer side of the intermediate flange sections 31 and 41, are wound with a large number of turns in correspondence with the large side space and in the range in which the outer winding wires 5b and 6b do not interfere with each other.
  • a Z-axis winding wire 7 is provided by being wound around the outer periphery of the outer flange 23 in the peripheral direction, so that the three-dimensional antenna unit 1B is formed.
  • the intermediate flange sections 31 and 41 are provided, the number of turns of the outer winding wires 5b and 6b is increased, and thereby the antenna characteristics are improved.
  • the Z-axis direction height of the antenna coil 11 tends to be increased as shown in FIG. 3B .
  • a core member 2 is formed into a cross shape having an intersection 2s, a rectangular plate-shaped X-axis leg section 21 protruding in the X-axis (right and left) direction from both sides of the intersection 2s, and a rectangular plate-shaped Y-axis leg section 22 protruding in the Y-axis (vertical) direction from both sides of the intersection 2s.
  • An X-axis winding frame section 3 formed around the outer periphery of the X-axis leg section 21 is divided into an inner winding frame section 3a and an outer winding frame section 3b by a plate-shaped intermediate flange section 31 made of an insulating material and provided in an intermediate portion of the X-axis leg section 21, while a Y-axis winding frame section 4 formed around the outer periphery of the Y-axis leg section 22 is divided into an inner winding frame section 4a and an outer winding frame section 4b by a plate-shaped intermediate flange section 41 made of the insulating material and provided in an intermediate portion of the Y-axis winding frame section 4.
  • the intermediate flange sections 31 and 41 are provided so as to extend in the Z-axis direction perpendicular to the directions in which the X-axis leg section 21 and the Y-axis leg section 22 are made to protrude respectively.
  • an outer flange 23 made of a rectangular-shaped insulating material is provided to surround the outer end portions of the X-axis leg section 21 and the Y-axis leg section 22 so as to connect the outer end portions with each other.
  • X-axis winding wires 5a and 5b are wound around the X-axis winding frame section 3 formed around the outer periphery of the X-axis leg section 21.
  • the inner winding wire 5a and the outer winding wire 5b are respectively wound around the inner winding frame section 3a and the outer winding frame section 3b which are divided from each other by the intermediate flange section 31.
  • Y-axis winding wires 6a and 6b are wound around the Y-axis winding frame section 4 formed around the outer periphery of the Y-axis leg section 22.
  • the inner winding wire 6a and the outer winding wire 6b are respectively wound around the inner winding frame section 4a and the outer winding frame section 4b which are divided from each other by the intermediate flange section 41.
  • the X-axis leg section 21 and the Y-axis leg section 22 are respectively formed to have a narrow width in the inner winding sections 21a and 22a corresponding to the inner winding frame sections 3a and 4a, and are respectively formed to have a wide width in the outer winding sections 21b and 22b corresponding to the outer winding frame sections 3b and 4b.
  • the number of turns (winding thickness) of the inner winding wire 5a and 6a wound around the inner winding sections 21a and 22a is set to be equal to the number of turns of the outer winding wire 5b and 6b wound around the outer winding sections 21b and 22b.
  • a Z-axis winding wire 7 is provided by being wound around the outer periphery of the outer flange 23 in the peripheral direction, so that the three-dimensional antenna unit 1C is formed.
  • the core cross-sectional area of the outer winding sections 21b and 22b on the outer side of the intermediate flange sections 31 and 41 is increased in the X-axis leg section 21 and the Y-axis leg section 22 of the core member 2, and thereby the antenna characteristics are improved.
  • the number of turns of the outer winding wires 5b and 6b is equal to the number of turns of the inner winding wires 5a and 6a, it is possible to make short the Z-axis direction height of the antenna coil 12 as shown in FIG. 4B .
  • a core member 2 is formed into a cross shape having an intersection 2s, a plate-shaped X-axis leg section 21 which is formed to protrude in the X-axis (right and left) direction from both sides of the intersection 2s and the thickness of which is changed in the interval on both sides of the intersection 2s, and a plate-shaped Y-axis leg section 22 which is formed to protrude in the Y-axis (vertical) direction from both sides of the intersection 2s and the thickness of which is changed in the interval on both sides of the intersection 2s.
  • An X-axis winding frame section 3 formed around the outer periphery of the X-axis leg section 21 is divided into an inner winding frame section 3a and an outer winding frame section 3b by a plate-shaped intermediate flange section 31 made of an insulating material and provided in an intermediate portion of the X-axis leg section 21, while a Y-axis winding frame section 4 formed around the outer periphery of the Y-axis leg section 22 is divided into an inner winding frame section 4a and an outer winding frame section 4b by a plate-shaped intermediate flange section 41 made of the insulating material and provided in an intermediate portion of the Y-axis winding frame section 4.
  • the intermediate flange sections 31 and 41 are provided so as to extend in the Z-axis direction perpendicular to the directions in which the X-axis leg section 21 and the Y-axis leg section 22 are made to protrude respectively.
  • an outer flange 23 made of a rectangular-shaped insulating material is provided to surround the outer end portions of the X-axis leg section 21 and the Y-axis leg section 22 so as to connect the outer end portions with each other.
  • X-axis winding wires 5a and 5b are wound around the X-axis winding frame section 3 formed around the outer periphery of the X-axis leg section 21.
  • the inner winding wire 5a and the outer winding wire 5b are respectively wound around the inner winding frame section 3a and the outer winding frame section 3b which are divided from each other by the intermediate flange section 31.
  • Y-axis winding wires 6a and 6b are wound around the Y-axis winding frame section 4 formed around the outer periphery of the Y-axis leg section 22.
  • the inner winding wire 6a and the outer winding wire 6b are respectively wound around the inner winding frame section 4a and the outer winding frame section 4b which are divided from each other by the intermediate flange section 41.
  • the X-axis leg section 21 and the Y-axis leg section 22 of the core member 2 are respectively formed to have a narrow width in inner winding sections 21a and 22a corresponding to the inner winding frame sections 3a and 4a, and are respectively formed to have a wide width in outer winding sections 21b and 22b corresponding to the outer winding frame sections 3b and 4b.
  • the X-axis leg section 21 and the Y-axis leg section 22 of the core member 2 are respectively formed to have a large thickness in the inner winding sections 21a and 22a and are respectively formed to have a small thickness in the outer winding sections 21b and 22b.
  • the inner winding wires 5a and 6a respectively wound around the inner winding frame sections 3a and 4a, each of which is provided between each of the intermediate flange sections 31 and 41 and the intersection 2s of the core member 2 located on the inner side of the intermediate flange sections 31 and 41, are wound with a small number of turns so as not to interfere with each other.
  • the intermediate flange sections 31 and 41 are provided, the number of turns of the outer winding wires 5b and 6b, and the core cross-sectional area of the outer winding sections 21b and 22b on the outer side of the intermediate flange sections 31 and 41 are increased, and thereby the antenna characteristics are improved.
  • the Z-axis direction height of the antenna coil 13 is lower than the Z-axis direction height of the antenna coil 11 of the second embodiment, the Z-axis direction height of the antenna coil 13 tends to be increased to be higher than the Z-axis direction height of the antenna coil 12 of the third embodiment, as the number of turns of the outer winding wires 5b and 6b is increased.
  • each of fifth and sixth embodiments shown in FIG. 6 and FIG. 7 shows an embodiment in which the intermediate flange sections 31 and 41 are formed by the core member 2.
  • the fifth and sixth embodiments respectively show two typical configuration examples for improving the antenna characteristics (sensitivity performance, and the like) of antenna coils 14 and 15. That is, in order to improve the antenna characteristics, it is effective means to increase the number of turns of the winding or to increase the cross-sectional area of the core, as described above. Accordingly, the fifth embodiment shown in FIG. 6 is an example in which the antenna characteristics are improved by increasing the number of turns of the winding, and the sixth embodiment shown in FIG. 7 is an example in which the antenna characteristics are improved by increasing the core cross-sectional area.
  • a core member 2 is formed into a cross shape having an intersection 2s, a X-axis leg section 21 protruding in the X-axis (right and left) direction from both sides of the intersection 2s, and a Y-axis leg section 22 protruding in the Y-axis (vertical) direction from both sides of the intersection 2s.
  • An X-axis winding frame section 3 formed around the outer periphery of the X-axis leg section 21 is divided into an inner winding frame section 3a and an outer winding frame sections 3b by a plate-shaped intermediate flange section 24 made of the core material and provided in an intermediate portion of the X-axis leg section 21, while a Y-axis winding frame section 4 formed around the outer periphery of the Y-axis leg section 22 is divided into an inner winding frame section 4a and an outer winding frame section 4b by a plate-shaped intermediate flange section 25 made of the core material and provided in an intermediate portion of the Y-axis winding frame section 4.
  • the intermediate flange sections 24 and 25 are provided so as to extend in the Z-axis direction perpendicular to the directions in which the X-axis leg section 21 and Y-axis leg section 22 are made to protrude respectively. Further, outer flanges 26 and 27 made of the core material are respectively provided at the outer ends of the X-axis leg section 21 and the Y-axis leg section 22 so as to be in parallel with the intermediate flange sections 24 and 25, respectively.
  • X-axis winding wires 5a and 5b are wound around the X-axis winding frame section 3 formed around the outer periphery of the X-axis leg section 21.
  • the inner winding wire 5a and the outer winding wire 5b are respectively wound around the inner winding frame section 3a and the outer winding frame section 3b which are divided from each other by the intermediate flange section 24.
  • Y-axis winding wires 6a and 6b are wound around the Y-axis winding frame section 4 formed around the outer periphery of the Y-axis leg section 22.
  • the inner winding wire 6a and the outer winding wire 6b are respectively wound around the inner winding frame section 4a and the outer winding frame section 4b which are divided from each other by the intermediate flange section 25.
  • the inner winding wires 5a and 6a respectively wound around the inner winding frame sections 3a and 4a, each of which is provided between each of the intermediate flange sections 24 and 25 and the intersection 2s of the core member 2 provided on the inner side of the intermediate flange sections 24 and 25, are wound with a small number of turns so as not to interfere with each other.
  • the outer winding wires 5b and 6b respectively wound around the outer winding frame sections 3b and 4b, each of which is provided between each of the intermediate flange sections 24 and 25 and each of the outer flanges 26 and 27 respectively provided on the outer side of the intermediate flange sections 24 and 25, are wound with a large number of turns in correspondence with the large side space and in the range in which the outer winding wires 5b and 6b do not interfere with each other.
  • the antenna coil 14 is formed.
  • the intermediate flange sections 24 and 25 and the outer flanges 26 and 27, which are made of the core material, are provided, so that the base members are unnecessary for the winding frame sections 3 and 4. Further, the antenna characteristics are improved as the number of turns of the outer winding wire 5b and 6b is increased.
  • the Z-axis direction height of the antenna coil 14 tends to be increased.
  • a core member 2 is formed into a cross shape having an intersection 2s, an X-axis leg section 21 protruding in the X-axis (right and left) direction from both sides of the intersection 2s, and a Y-axis leg section 22 protruding in the Y-axis (vertical) direction from both sides of the intersection 2s.
  • An X-axis winding frame section 3 formed around the outer periphery of the X-axis leg section 21 is divided into an inner winding frame section 3a and an outer winding frame sections 3b by a plate-shaped intermediate flange section 24 made of the core material and provided in an intermediate portion of the X-axis leg section 21, while a Y-axis winding frame sections 4 formed around the outer periphery of the Y-axis leg section 22 is divided into an inner winding frame section 4a and an outer winding frame section 4b by a plate-shaped intermediate flange section 25 made of the core material and provided in an intermediate portion of the Y-axis winding frame section 4.
  • the intermediate flange sections 24 and 25 are provided so as to extend in the Z-axis direction perpendicular to the directions in which the X-axis leg section 21 and Y-axis leg section 22 are made to protrude respectively. Further, outer flanges 26 and 27 made of the core material are respectively provided at the outer ends of the X-axis leg section 21 and the Y-axis leg section 22 so as to be in parallel with the intermediate sections 24 and 25, respectively.
  • X-axis winding wires 5a and 5b are wound around the X-axis winding frame section 3 formed around the outer periphery of the X-axis leg section 21.
  • the inner winding wire 5a is wound around the inner winding frame section 3a which is divided by the intermediate flange section 24 so as to be provided between the intermediate flange section 24 and the intersection 2s of the core member 2 provided on the inner side of the intermediate flange section 24, while the outer winding wire 5b is wound around the outer winding frame section 3b which is divided by the intermediate flange section 24 so as to be provided between the intermediate flange section 24 and the outer flange 26.
  • Y-axis winding wires 6a and 6b are wound around the Y-axis winding frame section 4 formed around the outer periphery of the Y-axis leg section 22.
  • the inner winding wire 6a is wound around the inner winding frame section 4a which is divided by the intermediate flange section 25 so as to be provided between the intermediate flange section 25 and the intersection 2s of the core member 2 provided on the inner side of the intermediate flange section 25, while the outer winding wire 6b is wound around the outer winding frame section 4b which is divided by the intermediate flange section 25 so as to be provided between the intermediate flange section 25 and the outer flange 27.
  • the width of inner winding sections 21a and 22a corresponding to the inner winding frame sections 3a and 4a is narrowed, and the width of outer winding sections 21b and 22b corresponding to the outer winding frame sections 3b and 4b is increased.
  • the number of turns (winding thickness) of the inner winding wires 5a and 6a respectively wound around the inner winding sections 21a and 22a is set to be equal to the number of turns of the outer winding wires 5b and 6b respectively wound around the outer winding sections 21b and 22b, so that the antenna coil 15 is formed.
  • the base members are unnecessary for the winding frame sections 3 and 4. Further, in the X-axis leg section 21 and the Y-axis leg section 22 of the core member 2, the antenna characteristics are improved as the cross-sectional area of the outer winding sections 21b and 22b respectively provided on the outer sides of the intermediate flange sections 24 and 25 is increased.
  • the sixth embodiment similarly to the third embodiment, since the number of turns of the outer winding wires 5b and 6b is equal to the number of turns of the inner winding wires 5a and 6a, the Z-axis direction height of the antenna coil 15 is made short.
  • the core member 2 is formed into the cross shape in which the X-axis leg section 21 and the Y-axis leg section 22 are made to cross at the midpoint thereof.
  • seventh and eighth embodiments shown in FIG. 8 and FIG. 9 respectively show embodiments in which the core member 2 is formed into a T-shape.
  • the seventh embodiment shown in FIG. 8 is an example in which only the Y-axis winding frame section 4 is divided by the intermediate flange section 41.
  • the eighth embodiment shown in FIG. 9 is an example in which the X-axis winding frame section 3 is also divided by the intermediate flange section 31.
  • a core member 2 is formed into a T-shape having an intersection 2s, an X-axis leg section 21 protruding in the X-axis (right and left) direction from both sides of the intersection 2s, and a Y-axis leg section 22 protruding in the Y-axis direction (downward) from the intersection 2s.
  • Outer flanges 26 and 26 made of the core material are formed at both the side end portions of the X-axis leg sections 21, and X-axis winding wires 5 and 5 are respectively wound around X-axis winding frame sections 3 and 3 which are respectively formed around the outer periphery of the X-axis leg sections 21 and between the outer flange 26 and the side surface of the intersection 2s of the core member 2.
  • a Y-axis winding frame section 4 formed around the outer periphery of the Y-axis leg section 22 is divided into an inner winding frame section 4a and an outer winding frame section 4b by the plate-shaped intermediate flange section 41 made of an insulating material and provided in an intermediate portion of the Y-axis winding frame section 4.
  • the intermediate flange section 41 is provided so as to extend in the Z-axis direction perpendicular to the protruding direction of the Y-axis leg section 22.
  • an outer flange 27 made of the core material is provided at the outer end of the Y-axis leg section 22 so as to be in parallel with the intermediate flange section 41.
  • Y-axis winding wires 6a and 6b are wound around the Y-axis winding frame section 4 formed around the outer periphery of the Y-axis leg section 22.
  • the inner winding wire 6a is wound around the inner winding frame section 4a which is divided by the intermediate flange section 41 so as to be provided between the intermediate flange section 41 and the intersection 2s of the core member 2 provided on the inner side of the intermediate flange section 41
  • the outer winding wire 6b is wound around the outer winding frame section 4b which is divided by the intermediate flange section 41 so as to be provided between the intermediate flange section 41 and the outer flange 27.
  • the Y-axis leg section 22 of the core member 2 is formed to have a narrow width in an inner winding section 22a corresponding to the inner winding frame sections 4a and is formed to have a wide width in an outer winding section 22b corresponding to the outer winding frame section 4b.
  • the number of turns (winding thickness) of the inner winding wire wound around the inner winding section 22a is set to be equal to the number of turns of the outer winding wire of the outer winding section 22b, so that the antenna coil 16 is formed.
  • a core member 2 is formed into a T-shape having an intersection 2s, an X-axis leg section 21 protruding in the X-axis (right and left) direction from both sides of the intersection 2s, and a Y-axis leg section 22 protruding in the Y-axis direction (downward) from the intersection 2s.
  • An X-axis winding frame section 3 formed around the outer periphery of the X-axis leg section 21 is divided into an inner winding frame section 3a and an outer winding frame sections 3b by the plate-shaped intermediate flange section 31 made of an insulating material and provided in an intermediate portion of the X-axis leg section 21, while a Y-axis winding frame section 4 formed around the outer periphery of the Y-axis leg section 22 is divided into an inner winding frame section 4a and an outer winding frame section 4b by the plate-shaped intermediate flange section 41 made of the insulating material and provided in an intermediate portion of the Y-axis winding frame section 4.
  • the intermediate flange sections 31 and 41 are provided so as to extend in the Z-axis direction perpendicular to the directions in which the X-axis leg section 21 and Y-axis leg section 22 are made to protrude respectively. Further, outer flanges 26 and 27 made of the core material are respectively provided at the outer ends of the X-axis leg section 21 and the Y-axis leg section 22 so as to be in parallel with the intermediate flange sections 31 and 41, respectively.
  • X-axis winding wires 5a and 5b are wound around the X-axis winding frame section 3 formed around the outer periphery of the X-axis leg section 21.
  • the inner winding wire 5a is wound around the inner winding frame section 3a which is divided by the intermediate flange section 31 so as to be provided between the intermediate flange section 31 and the intersection 2s of the core member 2 provided on the inner side of the intermediate flange section 31, while the outer winding wire 5b is wound around the outer winding frame section 3b which is divided by the intermediate flange section 31 so as to be provided between the intermediate flange section 31 and the outer flange 26.
  • the X-axis leg section 21 of the core member 2 is formed to have a narrow width in an inner winding section 21a corresponding to the inner winding frame section 3a and to have a wide width in an outer winding section 21b corresponding to the outer winding frame section 3b.
  • the number of turns (winding thickness) of the inner winding wire 5a wound around the inner winding section 21a is set to be equal to the number of turns of the outer winding wire 5b wound around the outer winding section 21b.
  • the inner winding section 21a is formed to be eccentric to the outer winding section 21b.
  • the intersection 2s, the inner winding wire 5a, the intermediate flange section 31, the outer winding wire 5b, and the outer flange 26 are configured so that the upper edge portions thereof in FIG. 9 are arranged on the same straight line.
  • Y-axis winding wires 6a and 6b are wound around the Y-axis winding frame section 4 formed around the outer periphery of the Y-axis leg section 22.
  • the inner winding wire 6a is wound around the inner winding frame section 4a which is divided by the intermediate flange section 41 so as to be provided between the intermediate flange section 41 and the intersection 2s of the core member 2 provided on the inner side of the intermediate flange section 41
  • the outer winding wire 6b is wound around the outer winding frame section 4b which is divided by the intermediate flange section 41 so as to be provided between the intermediate flange section 41 and the outer flange 27.
  • the Y-axis leg section 22 of the core member 2 is formed to have a narrow width in an inner winding section 22a corresponding to the inner winding frame sections 4a and is formed to have a wide width in an outer winding section 22b corresponding to the outer winding frame section 4b.
  • the number of turns (winding thickness) of the inner winding wire 6a wound around the inner winding section 22a is made small, and the number of turns of the outer winding wire 6b wound around the outer winding section 22b is increased in correspondence with the large side space. Thereby, the antenna coil 17 is formed.
  • the embodiments of the antenna coils 10 to 17, wherein coil 10 to 15 is a coil according to the present invention, and the three-dimensional antenna units 1A to 1D provided with the antenna coils are described, but the present invention is not limited to the above described embodiment.
  • the embodiment of the present invention may be modified into various other forms.
  • the above described embodiments show the examples in which the X-axis winding frame section 3 or the Y-axis winding frame section 4 is divided into the two winding frame sections 3a and 3b or the two winding frame sections 4a and 4b by providing the intermediate flange section.
  • the X-axis winding frame section 3 or the Y-axis winding frame section 4 may be divided into more than two winding frame sections.
  • winding wires may also be divided and formed so that the winding shapes of the winding wires are made small toward the outer side.
  • the inner space of the antenna unit may be effectively used in such a manner that the winding frame section on each side of the midpoint of the leg section is divided into three sections, and that the winding shape of the intermediate section is enlarged and the winding shape of the inner and outer side sections is made small.
  • the position, at which the intermediate flange section is provided is not limited to the middle position of the X-axis winding frame section 3 and the Y-axis winding frame section 4, and may be a position deviated to the inner side or the outer side in correspondence with the required antenna characteristics.
  • an antenna coil may also be configured in such a manner that the intermediate flange section is formed in a bobbin and the winding wire is wound around the bobbin beforehand, and that the bobbin is then attached to the outer periphery of the X-axis leg section 21 or the Y-axis leg section 22 of the core member 2.
  • the antenna coil according to an aspect of the present invention includes the core member having the X-axis and Y-axis leg sections respectively protruding in the X-axis and Y-axis directions from the intersection of the core member, and the X-axis and Y-axis winding wires respectively wound around the outer periphery of the X-axis and Y-axis leg sections, and is featured in that at least one of the X-axis winding frame section for the X-axis winding wire, which frame section is provided at the X-axis leg section, and the Y-axis winding frame section for the Y-axis winding wire, which frame section is provided at the Y-axis leg section, has the intermediate flange section for separating the winding frame section into at least two winding frame sections for different winding shapes.
  • the intermediate flange section is provided, the number of turns of the winding wound around the winding frame section provided at the outer periphery of the X-axis and Y-axis leg sections or the cross sectional area of the core member can be increased without collapse of the winding wires. Thereby, the sensitivity of the antenna can be improved, and the antenna coil can be compactly configured by effectively using the outer space between the X-axis and the Y-axis leg sections.
  • the core member is formed into a cross shape in which the X-axis leg section and the Y-axis leg section intersect each other at the midpoint thereof, and particularly when the X-axis leg section and the Y-axis leg section are configured to respectively include, on both sides of the midpoint of thereof, the X-axis and Y-axis winding frame sections respectively having the intermediate flange section so that each of the winding frame sections is separated into a plurality of winding frame sections by the intermediate flange section, the outer space between the X-axis leg section and the Y-axis leg section can be more effectively used, and hence an antenna coil having excellent characteristics can be obtained while securing miniaturization.
  • an antenna coil which includes a core member having an X-axis leg section protruding in the X-axis direction from an intersection of the core member and having a Y-axis leg section protruding in the Y-axis direction from the intersection, X-axis winding wires wound around the outer periphery of the X-axis leg section, and Y-axis winding wires wound around the outer periphery of the Y-axis leg section, at least one of an X-axis winding frame section for the X-axis winding wire, the X-axis winding frame section being provided at the X-axis leg section, and a Y-axis winding frame section for the Y-axis winding wire, the Y-axis winding frame section being provided at the Y-axis leg section, has one of intermediate flange sections for respectively separating the X-axis winding frame section and the Y-axis winding frame section into a pair of winding frame sections and

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Claims (20)

  1. Bobine d'antenne (10) comprenant un organe formant noyau (2) ayant une section de jambe d'axe X (21) faisant saillie dans la direction d'axe X depuis une intersection de l'organe formant noyau (2) et ayant une section de jambe d'axe Y (22) faisant saillie dans la direction d'axe Y depuis l'intersection, et un fil de bobinage d'axe X (5a, 5b) bobiné autour de la périphérie externe de la section de jambe d'axe X (21), et un fil de bobinage d'axe Y (6a, 6b) bobiné autour de la périphérie externe de la section de jambe d'axe Y (22),
    dans laquelle l'organe formant noyau (2) est formé en croix dans laquelle la section de jambe d'axe X (21) et la section de jambe d'axe Y (22) sont amenées à se croiser l'une l'autre au point milieu de la section de jambe d'axe X (21) et de la section de jambe d'axe Y (22),
    dans laquelle la section de jambe d'axe X (21) forme des sections de cadre de bobinage d'axe X (3) disposées des deux côtés du point milieu de la section de jambe d'axe X (21),
    dans laquelle la section de jambe d'axe Y (22) forme des sections de cadre de bobinage d'axe Y (4) disposées des deux côtés du point milieu de la section de jambe d'axe Y (22),
    caractérisée en ce que
    chacune des sections de cadre de bobinage d'axe X (3) et des sections de cadre de bobinage d'axe Y (4) comprend une section de bride intermédiaire (31, 41), de sorte que chacune des sections de cadre de bobinage est divisée par la section de bride intermédiaire (31, 41) en une pluralité de sections de cadre de bobinage.
  2. Bobine d'antenne selon la revendication 1, dans laquelle
    la bobine d'antenne (10) comprend en outre les sections de cadre de bobinage d'axe X (3) pour le fil de bobinage d'axe X (5a, 5b), la section de cadre de bobinage d'axe X (3) étant disposée au niveau de la section de jambe d'axe X (21), les sections de cadre de bobinage d'axe Y (4) pour le fil de bobinage d'axe Y (6a, 6b), la section de cadre de bobinage d'axe Y (4) étant disposée au niveau de la section de jambe d'axe Y (22),
    une section de substrat (42) au niveau de l'extrémité latérale externe de la section de jambe d'axe Y (22), et
    des sections de cadre externes (43) étant disposées des deux côtés de direction d'axe X de la section de substrat (42),
    les sections de cadre externes ayant une section en retrait (43a) pour bobiner un fil de bobinage d'axe Z, dans laquelle
    une surface de dessous latérale de la section en retrait est formée en une surface d'effilement (43b) qui est inclinée vers l'intérieur de façon à être orientée vers une surface d'effilement adjacente (33b) d'une portion d'arbre de bobinage d'axe X.
  3. Bobine d'antenne (10) selon la revendication 1 ou 2, dans laquelle au moins l'une des sections de cadre de bobinage d'axe X (3) pour le fil de bobinage d'axe X (5a, 5b), la section de cadre de bobinage d'axe X (3) étant disposée au niveau de la section de jambe d'axe X (21), et des sections de cadre de bobinage d'axe Y (4) pour le fil de bobinage d'axe Y (6a, 6b), la section de cadre de bobinage d'axe Y (4) étant disposée au niveau de la section de jambe d'axe Y (22), comprend la section de bride intermédiaire (31, 41) pour séparer la section de cadre de bobinage en au moins deux sections de cadre de bobinage pour des formes de bobinage différentes.
  4. Bobine d'antenne (10) selon la revendication 1, dans laquelle l'organe formant noyau (2) est formé en T dans lequel la section de jambe d'axe X (21) et la section de jambe d'axe Y (22) sont amenées à se croiser l'une l'autre au niveau de l'extrémité de l'une de la section de jambe d'axe X (21) et de la section de jambe d'axe Y (22).
  5. Bobine d'antenne (10) selon l'une quelconque des revendications 3 et 4, dans laquelle la section de bride intermédiaire (31, 41) est formée en une section de bride intermédiaire en forme de plaque (31, 41) constituée de l'organe formant noyau (2).
  6. Bobine d'antenne (10) selon l'une quelconque des revendications 3 à 5, dans laquelle une section de bride externe constituée de l'organe formant noyau (2) est disposée au niveau d'une extrémité externe de la section de jambe d'axe X (21) et de la section de jambe d'axe Y (22) de façon à être parallèle à la section de bride intermédiaire (31, 41).
  7. Bobine d'antenne (10) selon la revendication 5 ou 6, dans laquelle un fil de bobinage interne bobiné autour d'une section de cadre de bobinage interne (22a, 22a) disposée sur un côté interne de la section de bride intermédiaire (31, 41) est bobiné avec un plus petit nombre de spires, et un fil de bobinage externe bobiné autour d'une section de cadre de bobinage externe (22b, 22b) disposée sur un côté externe de la section de bride intermédiaire (31, 41) est bobiné avec un plus grand nombre de spires.
  8. Bobine d'antenne (10) selon la revendication 5 ou 6, dans laquelle une largeur de la section de jambe d'axe X (21) et de la section de jambe d'axe Y (22) est rendue plus petite dans une section de bobinage interne (22a, 22a) correspondant à une section de cadre de bobinage interne disposée sur un côté interne de la section de bride intermédiaire (31, 41), et est rendue plus grande dans la section de bobinage externe (22b, 22b) correspondant à une section de cadre de bobinage externe disposée sur un côté externe de la section de bride intermédiaire (31, 41).
  9. Bobine d'antenne (10) selon l'une quelconque des revendications 1 à 8, dans laquelle un fil de bobinage d'axe Z est bobiné autour de la portion périphérique de la bobine d'antenne (10) dans une direction périphérique.
  10. Bobine d'antenne (10) selon l'une quelconque des revendications 3 à 9, dans laquelle les sections de cadre de bobinage séparées par la section de bride intermédiaire (31, 41) sont configurées de sorte qu'au moins le nombre de spires du bobinage ou une aire en coupe de l'organe formant noyau (2) est différent entre les sections de cadre de bobinage.
  11. Bobine d'antenne (10) selon la revendication 1, dans laquelle l'organe formant noyau (2) comprend au moins deux portions, chacune étant en forme de tige et l'intersection (22s) croisant celles-ci est déviée vers le côté de surface avant de façon à être formée en une forme de plaque pour relier les sections de cadre de bobinage d'axe Y (4) disposées des deux côtés du point milieu de la section de jambe d'axe Y (22).
  12. Bobine d'antenne (10) selon la revendication 11, dans laquelle des sections de bride internes (22t, 22t) s'étendant dans la direction avant et arrière sont disposées successivement des deux côtés de l'intersection, et une section en retrait (22f) est formée derrière l'intersection de sorte que les sections de bride internes font saillie dans la direction arrière.
  13. Bobine d'antenne (10) selon la revendication 12, dans laquelle les sections de bobinage internes (22a, 22a) servant de parties d'arbre de bobinage sont disposées successivement sur un côté externe de sections de bride internes.
  14. Bobine d'antenne (10) selon la revendication 13, dans laquelle les sections de bobinage internes sont formées pour avoir une largeur légèrement plus petite que la largeur de l'intersection.
  15. Bobine d'antenne (10) selon la revendication 13, dans laquelle sur le côté externe des sections de bobinage internes, des sections de bobinage externes (22b, 22b), dont chacune a une largeur dans la direction d'axe X plus grande et une épaisseur dans la direction d'axe Z plus petite que la section de bobinage interne, sont disposées successivement de sorte que des sections de décrochement sont formées des deux côtés de chacune des sections de bobinage externes.
  16. Bobine d'antenne (10) selon la revendication 15, dans laquelle sur les deux extrémités externes des sections de bobinage externes, des brides externes (22c, 22c) sont disposées successivement de façon à avoir la même largeur dans la direction d'axe X et une épaisseur dans la direction d'axe Z plus grande que la section de bobinage externe, et dans la surface d'extrémité externe de chacune des brides externes, une section de noyau en retrait (22d) s'étendant dans la direction d'axe X pour bobiner le fil de bobinage d'axe Z est disposée.
  17. Procédé de fabrication d'une bobine d'antenne (10) comprenant un organe formant noyau (2) formant une section de jambe d'axe X (21), avec des sections de cadre de bobinage d'axe X (3), faisant saillie dans la direction d'axe X depuis une intersection de l'organe formant noyau (2) et une section de jambe d'axe Y (22), avec des sections de cadre de bobinage d'axe Y (4), faisant saillie dans la direction d'axe Y depuis l'intersection, un fil de bobinage d'axe X (5a, 5b) bobiné autour de la périphérie externe de la section de jambe d'axe X (21), et un fil de bobinage d'axe Y (6a, 6b) bobiné autour de la périphérie externe de la section de jambe d'axe Y (22), comprenant les étapes de :
    bobinage des fils de bobinage d'axe X (5a, 5b) et des fils de bobinage d'axe Y (6a, 6b) autour de périphéries externes de la section de jambe d'axe X (21) et de la section de jambe d'axe Y (22) respectivement ; et
    assemblage de l'organe formant noyau (2) ayant la section de jambe d'axe X (21) protubérante dans la direction d'axe X et de l'organe formant noyau (2) ayant la section de jambe d'axe Y (22) protubérante dans la direction d'axe Y au niveau d'une intersection,
    caractérisé en ce que
    dans l'étape de bobinage de fils de bobinage d'axe X (5a, 5b) et de fils de bobinage d'axe Y (6a, 6b) autour de périphéries externes de la section de jambe d'axe X (21) et de la section de jambe d'axe Y (22) respectivement, après qu'un organe de base d'axe X et un organe de base d'axe Y ayant des sections de bride intermédiaires (31, 41) sont attachés aux deux extrémités de la section de jambe d'axe X (21) et de la section de jambe d'axe Y (22) depuis le côté de surface arrière, les fils de bobinage d'axe X (5a, 5b) et les fils de bobinage d'axe Y (6a, 6b) sont bobinés.
  18. Procédé de fabrication de la bobine d'antenne selon la revendication 17,
    dans lequel, dans l'étape d'assemblage de l'organe formant noyau ayant la section de jambe d'axe X faisant saillie dans la direction d'axe X et de l'organe formant noyau ayant la section de jambe d'axe Y faisant saillie dans la direction d'axe Y au niveau de l'intersection, l'organe formant noyau ayant la section de jambe d'axe X faisant saillie dans la direction d'axe X et l'organe formant noyau ayant la section de jambe d'axe Y faisant saillie dans la direction d'axe Y sont combinés l'un à l'autre de sorte qu'à la fois les surfaces arrière de l'organe de base d'axe X et de l'organe de base d'axe Y doivent être situées sur le même plan.
  19. Procédé de fabrication de la bobine d'antenne selon la revendication 17 ou 20, comprenant en outre l'étape de bobinage du fil de bobinage d'axe autour de la périphérie externe de la section de jambe d'axe X (21), de la section de jambe d'axe Y (22), de l'organe de base d'axe X et de l'organe de base d'axe Y après l'étape d'assemblage de l'organe formant noyau (2) ayant la section de jambe d'axe X (21) faisant saillie dans la direction d'axe X et de l'organe formant noyau (2) ayant la section de jambe d'axe Y (22) faisant saillie dans la direction d'axe Y au niveau de l'intersection.
  20. Procédé de fabrication de la bobine d'antenne selon l'une quelconque des revendications 17 à 19, comprenant en outre l'étape de recouvrement de la périphérie externe du fil de bobinage d'axe Z par un moule en résine ou un boîtier.
EP15180569.4A 2010-02-15 2011-02-11 Bobine d'antenne Active EP2966655B1 (fr)

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JP2010030710A JP5161901B2 (ja) 2010-02-15 2010-02-15 アンテナコイル
EP11154180.1A EP2360704B1 (fr) 2010-02-15 2011-02-11 Bobine d'antenne

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JP5913268B2 (ja) * 2013-11-29 2016-04-27 東光株式会社 ３軸アンテナ
ES2832423T3 (es) * 2016-11-04 2021-06-10 Premo Sa Unidad de potencia magnética
EP3432421B1 (fr) 2017-07-18 2021-04-14 Premo, S.A. Antenne à trois axes à facteur de qualité amélioré

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Publication number Priority date Publication date Assignee Title
JPH0613213U (ja) * 1992-07-20 1994-02-18 ミツミ電機株式会社 アンテナコイル装置
DE19529725A1 (de) * 1995-08-12 1997-02-13 Teves Gmbh Alfred Spulenträger
JP2003092509A (ja) * 2001-07-13 2003-03-28 Sumida Corporation アンテナコイル
JP3924512B2 (ja) * 2002-06-27 2007-06-06 株式会社東海理化電機製作所 チップ多軸アンテナ
JP2005175965A (ja) * 2003-12-11 2005-06-30 Murata Mfg Co Ltd 送信アンテナコイル
CN1930733B (zh) * 2004-03-12 2010-05-26 日商·胜美达股份有限公司 三轴天线
EP2293384B1 (fr) * 2006-04-07 2013-07-10 Sumida Corporation Bobine d'antenne
WO2007116797A1 (fr) * 2006-04-10 2007-10-18 Sumida Corporation Élément de bobine
JP2007288345A (ja) * 2006-04-13 2007-11-01 Sumida Corporation 送信用アンテナ
WO2008056601A1 (fr) * 2006-11-08 2008-05-15 Sumida Corporation Unité d'antenne
JP2009267767A (ja) * 2008-04-25 2009-11-12 Hitachi Ferrite Electronics Ltd 低周波用３軸受信アンテナ装置

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Title
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Also Published As

Publication number Publication date
EP2966655A3 (fr) 2016-04-13
DE15180569T1 (de) 2016-05-12
JP5161901B2 (ja) 2013-03-13
JP2011166707A (ja) 2011-08-25
CN104051854B (zh) 2016-07-13
EP2360704A1 (fr) 2011-08-24
EP2966655A2 (fr) 2016-01-13
CN102195137A (zh) 2011-09-21
CN104051854A (zh) 2014-09-17
CN102195137B (zh) 2016-08-31
EP2360704B1 (fr) 2015-09-23

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