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WO2012053089A1 - Coil component and coil component unit - Google Patents

Coil component and coil component unit Download PDF

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Publication number
WO2012053089A1
WO2012053089A1 PCT/JP2010/068598 JP2010068598W WO2012053089A1 WO 2012053089 A1 WO2012053089 A1 WO 2012053089A1 JP 2010068598 W JP2010068598 W JP 2010068598W WO 2012053089 A1 WO2012053089 A1 WO 2012053089A1
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WO
WIPO (PCT)
Prior art keywords
coil
coil component
bobbin case
metal body
view
Prior art date
Application number
PCT/JP2010/068598
Other languages
French (fr)
Japanese (ja)
Inventor
金沢秀一
坂口明博
Original Assignee
東京特殊電線株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 東京特殊電線株式会社 filed Critical 東京特殊電線株式会社
Priority to PCT/JP2010/068598 priority Critical patent/WO2012053089A1/en
Priority to JP2012539524A priority patent/JPWO2012053089A1/en
Publication of WO2012053089A1 publication Critical patent/WO2012053089A1/en

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    • 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
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas

Definitions

  • the present invention relates to a coil component and a coil component unit, and more particularly to a coil component and a coil component unit capable of forming a sensitivity region extending in a direction parallel to the substrate surface of the electronic device and in one direction with high sensitivity.
  • a coil having antenna directivity in the front-rear direction a coil housing space that is a space for housing the coil, and a surface that is fixed to the board surface of the electronic device and that is orthogonal to the direction of the antenna directivity of the coil
  • a coil component comprising a bobbin case having a certain board mounting surface is known (for example, see Patent Document 1).
  • an object of the present invention is to provide a coil component and a coil component unit capable of forming a sensitivity region extending in a direction parallel to the substrate surface of the electronic device and in one direction with high sensitivity.
  • the present invention provides a coil having antenna directivity in the front-rear direction, a metal body installed close to the rear of the coil so as to increase sensitivity in front of the coil, and a space for housing the coil.
  • a coil housing space a metal body housing space that is a space for housing the metal body, and a surface that is fixed to the substrate surface of the electronic device and that is parallel to or substantially parallel to the direction of the antenna directivity of the coil.
  • a coil component comprising a bobbin case having a certain board mounting surface. In the coil component having the above configuration, the magnetic field and the electric field in front of the coil are increased by electrically connecting one end of the coil and the metal body to the ground of the substrate of the electronic device.
  • the board mounting surface is a surface parallel or substantially parallel to the direction of the antenna directivity of the coil.
  • the board mounting surface is a surface parallel or substantially parallel to the direction of the antenna directivity of the coil.
  • the metal body accommodating space can be formed, for example, by providing a slit in the bobbin case, and also serves to determine the position (distance) of the metal body with respect to the coil while accommodating and fixing the metal body in the bobbin case.
  • the present invention provides the coil component according to the first aspect, wherein the winding portion of the coil and the metal body are in a positional relationship in which the coil and the metal body are held in the bobbin case.
  • a coil component having a size and a positional relationship such that a projection image of the coil winding portion can be completely inserted into the front surface of the metal body when the coil winding portion is projected on the front surface of the body. provide.
  • the degree of freedom of the size of the front surface of the metal body is greater than the winding portion of the coil whose size is almost defined by the frequency band.
  • the present invention provides the coil component according to the first or second aspect, wherein both end portions of the coil are exposed to a board mounting surface of the bobbin case to become coil terminal portions, and at least the metal body A part is exposed to the board mounting surface of the bobbin case to become a metal body terminal part, and a metal bobbin fixing terminal part is installed in at least one place on the board mounting surface of the bobbin case.
  • Coil parts to be provided are provided.
  • the present invention provides the coil component according to the third aspect, wherein both ends of the coil are processed into a flat plate shape, wound around the board mounting surface side end of the bobbin case, and exposed to the board mounting surface.
  • a coil component is provided in which a portion of the insulating coating is removed and solder plating is performed to form a coil terminal portion.
  • the present invention provides the coil component according to any one of the first to fourth aspects, wherein the bobbin case has an adsorption surface that can be adsorbed by a mounter on the side opposite to the substrate mounting surface. Coil parts to be provided are provided. With the above configuration, the automatic mounting suction mounter can be used when the coil component is mounted on the substrate of the electronic device.
  • the present invention comprises a coil component and a flexible printed circuit board in which the coil component is fixed to the front surface.
  • the coil component includes a coil having antenna directivity in the front-rear direction;
  • a bobbin having a coil housing space which is a space for housing a coil and a board mounting surface which is a surface fixed to the front surface of the flexible printed circuit board and which is a surface orthogonal to or substantially orthogonal to the direction of antenna directivity of the coil
  • a flexible printed circuit board, wherein the flexible printed circuit board has a coil component region to which the coil component is fixed, a bending region that can be folded so as to be orthogonal or substantially orthogonal to the coil component region, and sensitivity in front of the coil.
  • a coil component unit comprising: a metal layer disposed behind the coil so as to be enhanced.
  • the bent region of the flexible printed circuit board is fixed to the substrate of the electronic device in a state of being orthogonally or substantially orthogonal to the coil component region, it is parallel or substantially parallel to the substrate surface of the electronic device.
  • Coil sensitivity can be extended in any direction. Then, by electrically connecting one end of the coil and the metal layer to the ground of the substrate of the electronic device, a magnetic field and an electric field in front of the coil are increased. As a result, it is possible to form a sensitivity region extending with high sensitivity in one direction from the coil component in a direction parallel or substantially parallel to the substrate surface of the electronic device.
  • the electronic device is a digital camera, for example, and its substrate surface extends in the vertical and horizontal directions of the digital camera, the sensitivity area of the coil component extends with high sensitivity downward in the digital camera. I can do it. Therefore, for example, when a digital camera is placed on the cradle in order to perform near field communication with an antenna built in the cradle and having antenna directivity in the vertical direction, the digital camera can be placed in a standing state.
  • the coil component and the coil component unit of the present invention it is possible to form a sensitivity region extending with high sensitivity in one direction from the coil component in a direction parallel or substantially parallel to the substrate surface of the electronic device.
  • FIG. 1 is a perspective view showing a coil component according to Embodiment 1.
  • FIG. 1 is an exploded perspective view showing a coil component according to Embodiment 1.
  • FIG. It is the (a) front view and (b) right view which show the coil which concerns on Example 1.
  • FIG. It is the (a) front view which shows the metal body which concerns on Example 1, (b) The right view, and (c) The bottom view.
  • FIG. 1 is a perspective view showing a bobbin case according to a first embodiment.
  • BRIEF DESCRIPTION OF THE DRAWINGS (a) Front view, (b) Right side view, and (c) Bottom view showing a digital camera mounted with coil components according to Embodiment 1. It is a right view which shows the digital camera and cradle which mounted the coil components which concern on Example 1.
  • FIG. It is the (a) chart and (b) graph which show the gap distance ratio characteristic of the coil components which concern on Example 1.
  • FIG. It is the (a) chart and (b) graph which show the area ratio characteristic of the coil components which concern on Example 1.
  • FIG. It is the (a) front view, (b) right view, and (c) bottom view which show the coil components which concern on Example 2.
  • FIG. It is (a) top view, (b) front view, (c) right side view, and (d) bottom view showing a coil component according to the third embodiment.
  • It is the (a) front view which shows the metal body which concerns on Example 3, (b) The right view, and (c) The bottom view.
  • It is the (a) front view and the (b) right view which show the coil component unit which concerns on Example 5.
  • FIG. 1 A Front view, (b) Right side view, and (c) Bottom view showing a digital camera mounted with a coil component unit according to a fifth embodiment. It is a right view which shows the digital camera and cradle which mounted the coil component unit which concerns on Example 5.
  • FIG. It is (a) top view, (b) front view, (c) right side view, (d) bottom view, and (e) back view showing a coil component according to Example 6.
  • Example 1- 1A is a plan view showing the coil component 10 according to the first embodiment
  • FIG. 1B is a front view
  • FIG. 1C is a right side view
  • FIG. 1D is a bottom view.
  • the coil component 10 includes a coil 1, a metal body 2 installed close to the rear of the coil 1, and a bobbin case 3 that holds the coil 1 and the metal body 2.
  • the bottom surface of the bobbin case 3 is a board mounting surface fixed to the board surface of the electronic device.
  • FIG. 2 is a perspective view of the coil component 10.
  • FIG. 3 is an exploded perspective view of the coil component 10.
  • FIG. 4A is a front view of the coil 1, and FIG. 4B is a right side view thereof.
  • the coil 1 is a U-shaped coil having windings 1a and 1b obtained by winding an insulation-coated copper wire in a solenoid shape.
  • the central axis 1c of the winding 1a and the central axis 1d of the winding 1b are parallel.
  • Both end portions of the coil 1 are bent so as to be processed into a flat plate shape and wound around the end portion of the bobbin case 3 to form coil terminal portions 1e and 1f.
  • the insulation coating on at least the bottom surface of the coil terminal portions 1e and 1f is removed and solder plated. As can be seen from FIG. 1D, the coil terminal portions 1e and 1f are exposed on the board mounting surface.
  • the coil 1 has antenna directivity in the front-rear direction, and the front sensitivity region F and the rear sensitivity region R are the main sensitivity regions.
  • the board mounting surface is a surface parallel or substantially parallel to the direction of the antenna directivity of the coil 1.
  • FIG. 5A is a front view of the metal body 2
  • FIG. 5B is a right side view
  • FIG. 5C is a bottom view.
  • the metal body 2 is a copper metal plate, and part of the lower end is bent into an L shape to form metal body terminal portions 2a and 2b. As can be seen from FIG. 1D, the metal terminal portions 2a and 2b are exposed on the board mounting surface.
  • the size and position of the metal body 2 are set so that the projected image 1p of the portions of the windings 1a and 1b can enter the front surface of the metal body 2.
  • the size of the coil 1 is defined by the frequency band. As a numerical example, when the frequency band is the GHz band, the length La of the windings 1a and 1b of the coil 1 is about 3.2 mm, and the width Lb of the coil 1 is about 5 mm.
  • the height Ca of the front surface of the metal body 2 is about 3.2 mm to about 8 mm and the width Cb is about 5 mm to match the internal space size of the electronic device using the coil component 10 and the characteristics required by the electronic device. A value between about 8 mm is selected.
  • FIG. 7A is a plan view of the bobbin case 3
  • FIG. 7B is a front view
  • FIG. 7C is a right side view
  • FIG. 7D is a bottom view.
  • the bobbin case 3 is made of synthetic resin and has a coil housing space 3g that is a space for housing the coil 1 and a metal body housing space 3h that is a space for housing the metal body 2.
  • the coil housing space 3g is provided with projections 3d and 3e inserted into the windings 1a and 1b of the coil 1 in order to maintain the position of the coil 1 with respect to the bobbin case 3.
  • the bobbin case 3 includes an adsorption surface 3f that can be adsorbed by a mounter on the side opposite to the substrate mounting surface.
  • FIG. 8 is a perspective view of the bobbin case 3.
  • FIG. 9A is a front view of the digital camera 100 on which the coil component 10 is mounted
  • FIG. 9B is a right side view
  • FIG. 9C is a bottom view.
  • the substrate 100 a of the digital camera 100 extends in the vertical and horizontal directions of the digital camera 100.
  • the coil component 10 is soldered to the lower end portion of the substrate 100a with the front surface of the coil component 10 facing downward.
  • the coil terminal portion 1e of the coil 1 is soldered to a wiring pattern serving as a circuit input
  • the coil terminal portion 1f of the coil 1 is soldered to a wiring pattern serving as a ground
  • the metal body terminal portions 2a and 2b of the metal body 2 Is soldered to the wiring pattern serving as the ground
  • the bobbin fixing terminal portions 3a to 3c of the bobbin case 3 are soldered to the wiring pattern serving as the ground.
  • the digital camera 100 can be placed on the cradle C in an upright state, and can perform near field communication with an antenna S that is built in the cradle C and has antenna directivity in the vertical direction.
  • FIG. 11A is a chart showing a change in the coupling strength when the shortest distance of the gap between the coil 1 and the metal body 2 is changed.
  • La 3.2 mm
  • Lb 5 mm
  • Ca 5.3 mm
  • Cb 5.0 mm
  • the frequency is 4.48 GHz.
  • FIG. 11B is a graph in which the horizontal axis represents the ratio of the gap to the length La of the windings 1a and 1b of the coil 1 (referred to as the distance ratio), and the vertical axis represents the coupling strength.
  • the horizontal axis represents the ratio of the gap to the length La of the windings 1a and 1b of the coil 1 (referred to as the distance ratio)
  • the vertical axis represents the coupling strength. The smaller the gap, the higher the bond strength. When the distance ratio exceeds 0.8, the bond strength suddenly decreases.
  • the coupling strength refers to the S21 characteristic (S parameter), which is one of the antenna characteristic evaluations, and is another coil facing the receiving antenna (approximately 10 mm apart) from the transmitting antenna (coil of the coil component). ) Is an index for evaluating the transmission characteristics.
  • S parameter S21 characteristic
  • (A) of FIG. 12 is a table
  • La 3.2 mm
  • Lb 5 mm
  • gap 0.5 mm
  • frequency 4.48 GHz.
  • the horizontal axis represents the ratio of the area Ca ⁇ Cb of the rectangle surrounding the metal body 2 to the area La ⁇ Lb of the rectangle surrounding the winding portion of the coil 1 (referred to as area ratio), and the coupling strength is It is the graph which made the vertical axis
  • the bond strength increases as the vertical width Ca and the horizontal width Cb of the metal body 1 are increased. However, when the area ratio is 3 or more, the bond strength is saturated.
  • the gap ratio is preferably 0.8 or less and the area ratio is preferably 1 to 3.
  • FIG. 13A is a front view of the coil component 20 according to the second embodiment
  • FIG. 13B is a right side view
  • FIG. 13C is a bottom view.
  • the bottom surface of the bobbin case 4 has a step 4g, and has a bottom shape that matches the step portion of the stepped substrate. Except for the bottom surface of the bobbin case 4 being a step 4g, the configuration is the same as that of the first embodiment.
  • FIG. 14A is a plan view of the coil component 30 according to the third embodiment
  • FIG. 14B is a front view
  • FIG. 14C is a right side view
  • FIG. 14D is a bottom view.
  • the left and right ends of the metal body 5 are bent to form ribs, and the mechanical strength is increased.
  • the structure is the same as that of the first embodiment except that the left and right ends of the metal body 5 are bent into ribs.
  • 15A is a front view of the metal body 2
  • FIG. 15B is a right side view
  • FIG. 15C is a bottom view.
  • FIG. 16A is a plan view showing the coil component 70 according to the fourth embodiment
  • FIG. 16B is a front view
  • FIG. 16C is a right side view
  • FIG. 16D is a bottom view.
  • the coil component 70 uses a U-shaped coil having windings 7 a and 7 b obtained by winding an insulation-coated flat copper wire in a solenoid shape and deformed flatly as the coil 7, and has a shape suitable for the coil 7.
  • the configuration is the same as that of the first embodiment except that the bobbin case 8 is used.
  • Both end portions of the coil 7 are bent so as to be wound around the end portion of the bobbin case 8 to form coil terminal portions 7e and 7f.
  • the insulation coating on at least the bottom surface of the coil terminal portions 7e and 7f is removed and solder plated. As can be seen from FIG. 16D, the coil terminal portions 7e and 7f are exposed on the board mounting surface.
  • the bobbin case 8 is made of synthetic resin and has a coil housing space that is a space for housing the coil 7 and a metal body housing space that is a space for housing the metal body 2. In the coil housing space, projections 8 d and 8 e are provided to be inserted into the windings 7 a and 7 b of the coil 7 in order to maintain the position of the coil 7 with respect to the bobbin case 8.
  • the bobbin case 8 includes a suction surface 8f that can be suctioned by a mounter on the side opposite to the board mounting surface.
  • Example 4 since the coil 7 having the windings 7a and 7b in which the insulation-coated flat copper wire is wound in a solenoid shape and deformed flatly is used, the thickness of the coil 7 can be reduced.
  • FIG. 17A is a front view showing the coil component unit 60 according to the fifth embodiment
  • FIG. 17B is a right side view thereof.
  • the coil component unit 60 includes a coil component 40 and a flexible printed board 50 having the coil component 40 fixed to the front surface.
  • Wiring patterns 50a, 50b, 50c, 50d, and 50e are formed on the front surface of the flexible printed board 50, and the resistor chips 51 and 52 and the connector 53 are fixed.
  • a metal layer 50 f is formed on the entire rear surface of the flexible printed board 50.
  • the wiring patterns 50a, 50b, 50e on the front surface of the flexible printed circuit board 50 and the metal layer 50f on the rear surface of the flexible printed circuit board 50 are electrically connected through a through hole 50g, and these are connected to the ground of the electronic device.
  • FIG. 18A is a plan view showing the coil component 40 according to the fifth embodiment
  • FIG. 18B is a front view
  • FIG. 18C is a right side view
  • FIG. 18D is a bottom view
  • the coil component 40 is a coil 1 that has antenna directivity in the front-rear direction, a coil housing space that is a space for housing the coil 1, and a surface that is fixed to the front surface of the flexible printed circuit board 50.
  • a bobbin case 6 having a substrate mounting surface on the rear surface which is a surface orthogonal or substantially orthogonal to the direction of the characteristics.
  • the coil 1 is shown in FIG. 4, and is a U-shaped coil having windings 1a and 1b obtained by winding an insulation-coated copper wire in a solenoid shape. Both ends of the coil 1 are bent so as to be processed into a flat plate shape and wound around the end of the bobbin case 6 to form coil terminal portions 1h and 1g. The insulation coating on at least the rear surface of the coil terminal portions 1h and 1g is removed and solder-plated. As can be seen from FIG. 18E, the coil terminal portions 1h and 1g are exposed on the board mounting surface.
  • FIG. 19A is a plan view of the bobbin case 6, FIG. 19B is a front view, FIG. 19C is a right side view, FIG. 19D is a bottom view, and FIG.
  • the bobbin case 6 is made of synthetic resin and has a coil housing space 6g that is a space for housing the coil 1.
  • the coil housing space 6g is provided with protrusions 6d and 6e inserted into the windings 1a and 1b of the coil 1 in order to maintain the position of the coil 1 with respect to the bobbin case 6.
  • the bobbin case 6 includes a suction surface 6f that can be sucked by a mounter on the side opposite to the substrate mounting surface.
  • FIG. 20A is a front view of the flexible printed board 50
  • FIG. 20B is a right side view
  • FIG. 20C is a rear view.
  • the flexible printed board 50 includes a coil component region 51 to which the coil component 40 is fixed, and a bending region 52 that can be bent so as to be orthogonal or substantially orthogonal to the coil component region 51.
  • the wiring patterns 50b, 50d, 50e in the bent region 52 and the metal layer 50f on the rear surface constitute a microstrip line, which can be directly connected to the substrate of the electronic device, and does not require a coaxial cable for connection. The number of parts can be reduced. Although not shown, the wiring patterns 50b, 50d and 50e constituting the micro strip line are covered with a shielding material to suppress the influence of external noise.
  • the coil terminal portion 1g of the coil 1 is soldered to the wiring pattern 50c serving as a circuit input
  • the coil terminal portion 1h of the coil 1 is soldered to the wiring pattern 50e serving as the ground
  • the bobbin case 6 is fixed to the bobbin case 6
  • the terminal portion 6a is soldered to the wiring pattern 50a.
  • the portions of the windings 1a and 1b of the coil 1 are seen from the front side on the portion of the metal layer 50f that contacts the back surface of the coil component region 51 in a positional relationship where the coil component 40 is fixed to the flexible printed board 50.
  • the size and position of the metal layer 50f are set so that the projected image 1p of the portions of the windings 1a and 1b of the coil 1 can enter the portion of the metal layer 50f that hits the back surface of the coil component region 51 when projected. Yes.
  • the size of the coil 1 is defined by the frequency band.
  • the length La of the windings 1a and 1b of the coil 1 is about 3.2 mm, and the width Lb of the coil 1 is about 5 mm.
  • the height Ca of the portion of the metal layer 50f that hits the back surface of the coil component region 51 is adjusted to about 3.2 mm to about 3.2 mm in accordance with the internal space size of the electronic device using the coil component 40 and the characteristics required by the electronic device. 8 mm and the width Cb is selected to be a value between about 5 mm and about 8 mm.
  • FIG. 22A is a front view of the digital camera 200 on which the coil component 40 is mounted
  • FIG. 22B is a right side view
  • FIG. 22C is a bottom view.
  • the substrate 200a of the digital camera 200 extends in the vertical and horizontal directions of the digital camera 200.
  • the coil component unit 60 is soldered to the lower end portion of the substrate 200 a in a bent region 52 that is bent so as to be orthogonal or substantially orthogonal to the coil component region 51.
  • the sensitivity region of the coil 1 extends below the digital camera 200.
  • the digital camera 200 can be placed on the cradle C in an upright state, and can perform near field communication with the antenna S built in the cradle C and having antenna directivity in the vertical direction.
  • a coil component 80 shown in FIG. 24 may be used in place of the coil component 40 in the fifth embodiment.
  • the coil component 80 uses a U-shaped coil having windings 7 a and 7 b obtained by winding an insulation-coated flat copper wire in a solenoid shape and deforming it flatly as the coil 7, and having a shape suitable for the coil 7. Except for using the bobbin case 9, the configuration is the same as that of the coil component 40 in the fifth embodiment.
  • Both end portions of the coil 7 are bent so as to be wound around the end portion of the bobbin case 9 to form coil terminal portions 7h and 7g.
  • the insulation coating on at least the rear surface of the coil terminal portions 7h and 7g is removed and solder plated. As can be seen from FIG. 24E, the coil terminal portions 7h and 7g are exposed on the board mounting surface.
  • the bobbin case 9 includes a suction surface 9f that can be suctioned by a mounter on the side opposite to the board mounting surface.
  • the coil component and the coil component unit of the present invention can be used as an antenna coil in the GHz band, for example.

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Abstract

In the present invention, in order to increase forward sensitivity of a coil having longitudinal antenna directivity, a metal object is placed near the rear of the coil and the coil and the metal object are retained in a bobbin case. The bobbin case has a substrate mounting surface which is a surface fixed to the substrate surface of an electronic device and which is a surface parallel or substantially parallel to the direction of antenna directivity of the coil. When the present invention is mounted in the substrate surface of the electronic device, it is possible to form a sensitive region which extends in a direction parallel to the substrate surface and with high sensitivity in one direction.

Description

コイル部品およびコイル部品ユニットCoil parts and coil part units
　本発明は、コイル部品およびコイル部品ユニットに関し、さらに詳しくは、電子装置の基板面に平行な方向で且つ一方向に高い感度で延びている感度領域を形成できるコイル部品およびコイル部品ユニットに関する。 The present invention relates to a coil component and a coil component unit, and more particularly to a coil component and a coil component unit capable of forming a sensitivity region extending in a direction parallel to the substrate surface of the electronic device and in one direction with high sensitivity.
　従来、前後方向にアンテナ指向性を有するコイルと、コイルを収容する空間であるコイル収容空間および電子装置の基板面に固定される面であって且つコイルのアンテナ指向性の方向と直交する面である基板実装面を有するボビンケースとを具備してなるコイル部品が知られている（例えば、特許文献１参照。）。 Conventionally, a coil having antenna directivity in the front-rear direction, a coil housing space that is a space for housing the coil, and a surface that is fixed to the board surface of the electronic device and that is orthogonal to the direction of the antenna directivity of the coil A coil component comprising a bobbin case having a certain board mounting surface is known (for example, see Patent Document 1).
特開２０１０－０２１４５８号公報JP 2010-021458 A
　この種のコイル部品は、ボビンケースの基板実装面を電子装置の基板面に固定することで電子装置に実装されるが、上記従来のコイル部品では基板実装面がコイルのアンテナ指向性の方向と直交する面であるため、コイル部品の感度領域は電子装置の基板面に直交する方向に延びている状態となる。
　ところで、電子装置が例えばデジタル・カメラの場合、その基板面はデジタル・カメラの上下左右の方向に広がっているのが一般的である。このため、コイル部品の感度領域はデジタル・カメラの前後方向に延びている状態となる。従って、例えばクレードルに内蔵され且つ上下方向にアンテナ指向性を有するアンテナと近接通信させるためにクレードルにデジタル・カメラを載置するとき、デジタル・カメラを寝かせてクレードルに載置し、コイル部品の感度領域も上下方向に延びている状態とする必要があった。
　しかし、デジタル・カメラを寝かせずに、立てた状態でクレードルに載置したいという要望が強かった。
　そこで、本発明の目的は、電子装置の基板面に平行な方向で且つ一方向に高い感度で延びている感度領域を形成できるコイル部品およびコイル部品ユニットを提供することにある。 This type of coil component is mounted on an electronic device by fixing the substrate mounting surface of the bobbin case to the substrate surface of the electronic device. However, in the conventional coil component described above, the substrate mounting surface is in the direction of the antenna directivity of the coil. Since the surfaces are orthogonal, the sensitivity region of the coil component extends in a direction orthogonal to the substrate surface of the electronic device.
By the way, when the electronic device is, for example, a digital camera, the substrate surface generally spreads in the vertical and horizontal directions of the digital camera. For this reason, the sensitivity region of the coil component is in a state extending in the front-rear direction of the digital camera. Therefore, for example, when a digital camera is placed on the cradle in order to perform close proximity communication with an antenna that is built in the cradle and has antenna directivity in the vertical direction, the digital camera is placed on the cradle and the sensitivity of the coil component is set. The region also needed to be extended in the vertical direction.
However, there was a strong demand to place the digital camera on the cradle without standing.
Accordingly, an object of the present invention is to provide a coil component and a coil component unit capable of forming a sensitivity region extending in a direction parallel to the substrate surface of the electronic device and in one direction with high sensitivity.
　第１の観点では、本発明は、前後方向にアンテナ指向性を有するコイルと、前記コイルの前方の感度を高めるように前記コイルの後方に近接設置される金属体と、前記コイルを収容する空間であるコイル収容空間および前記金属体を収容する空間である金属体収容空間および電子装置の基板面に固定される面であって且つ前記コイルのアンテナ指向性の方向と平行又はほぼ平行な面である基板実装面を有するボビンケースとを具備してなることを特徴とするコイル部品を提供する。
　上記構成のコイル部品では、コイルの一端と金属体とを電子装置の基板のグランドに電気的に接続することで、コイルの前方での磁界および電界が増加する。さらに、基板実装面を、コイルのアンテナ指向性の方向と平行又はほぼ平行な面としている。これらの結果、基板実装面を電子装置の基板面に固定することで電子装置に実装したとき、電子装置の基板面に平行又はほぼ平行な方向で且つコイル部品から一方向に高い感度で延びている感度領域を形成できる。
　そして、電子装置が例えばデジタル・カメラで、その基板面がデジタル・カメラの上下左右の方向に広がっている場合、コイル部品の感度領域がデジタル・カメラの下方向に高い感度で延びている状態とすることが出来る。従って、例えばクレードルに内蔵され且つ上下方向にアンテナ指向性を有するアンテナと近接通信させるためにクレードルにデジタル・カメラを載置するとき、デジタル・カメラを立てた状態で載置可能となる。 In a first aspect, the present invention provides a coil having antenna directivity in the front-rear direction, a metal body installed close to the rear of the coil so as to increase sensitivity in front of the coil, and a space for housing the coil. A coil housing space, a metal body housing space that is a space for housing the metal body, and a surface that is fixed to the substrate surface of the electronic device and that is parallel to or substantially parallel to the direction of the antenna directivity of the coil. There is provided a coil component comprising a bobbin case having a certain board mounting surface.
In the coil component having the above configuration, the magnetic field and the electric field in front of the coil are increased by electrically connecting one end of the coil and the metal body to the ground of the substrate of the electronic device. Further, the board mounting surface is a surface parallel or substantially parallel to the direction of the antenna directivity of the coil. As a result, when mounted on the electronic device by fixing the substrate mounting surface to the substrate surface of the electronic device, it extends in a direction parallel to or substantially parallel to the substrate surface of the electronic device and in one direction from the coil component with high sensitivity. A sensitive area can be formed.
And when the electronic device is a digital camera, for example, and its substrate surface extends in the vertical and horizontal directions of the digital camera, the sensitivity area of the coil component extends with high sensitivity downward in the digital camera. I can do it. Therefore, for example, when a digital camera is placed on the cradle in order to perform near field communication with an antenna built in the cradle and having antenna directivity in the vertical direction, the digital camera can be placed in a standing state.
　金属体は、例えば平面形状を有したものであれば厚みによる特性変化ほとんどないので、例えば金属箔をプラスチックシートに貼り付けて箔側の面をコイル側にしてコイルの後方に近接配置してもよいし、自律的に平面形状が保てる程度の厚みを有した金属板を用いてもよいし、強度を持たせるために両端にリブを設けた金属板を用いてもよい。金属の種類は、例えば銅やアルミニウム等が挙げられる。 If the metal body has, for example, a planar shape, there is almost no change in characteristics due to thickness. For example, even if a metal foil is attached to a plastic sheet and the foil side is the coil side, Alternatively, a metal plate having such a thickness that the plane shape can be maintained autonomously may be used, or a metal plate having ribs at both ends may be used in order to give strength. Examples of the metal include copper and aluminum.
　金属体は、コイルとの距離が離れるにつれてコイルとの結合強度が低下していくので、コイルからあまり離さない方が望ましい。コイルと絶縁されていれば、コイルに接触して配置してもよい。なお、結合強度とは、アンテナ特性評価の１つであるＳ２１特性（Ｓパラメータ）のことを指し、送信側アンテナ（コイル部品のコイル）から受信側アンテナ（１０ｍｍ程度離して対向させた別のコイル）への伝送特性を評価する指標である。送信側アンテナから受信側アンテナへ全く損失なく伝送出来た場合の結合強度は０ｄＢで、伝送損失が大きくなるほど結合強度は小さくなる。 It is desirable that the metal body not be separated from the coil so much because the bond strength with the coil decreases as the distance from the coil increases. As long as it is insulated from the coil, it may be disposed in contact with the coil. The coupling strength refers to the S21 characteristic (S parameter), which is one of the antenna characteristic evaluations, and is another coil facing the receiving antenna (approximately 10 mm apart) from the transmitting antenna (coil of the coil component). ) Is an index for evaluating the transmission characteristics. When transmission is possible from the transmitting antenna to the receiving antenna without any loss, the coupling strength is 0 dB, and the coupling strength decreases as the transmission loss increases.
　コイル収容空間には、ボビンケースに対するコイルの位置を保持するためのコイル位置規制手段を設けることが望ましい。 It is desirable to provide coil position restricting means for holding the position of the coil with respect to the bobbin case in the coil housing space.
　金属体収容空間は、例えばボビンケースにスリットを設けて形成でき、金属体をボビンケースに収容固定するとともにコイルに対する金属体の位置（距離）を決める役割も果たす。 The metal body accommodating space can be formed, for example, by providing a slit in the bobbin case, and also serves to determine the position (distance) of the metal body with respect to the coil while accommodating and fixing the metal body in the bobbin case.
　第２の観点では、本発明は、前記第１の観点によるコイル部品において、前記コイルの巻線部分および前記金属体が、前記コイルおよび前記金属体を前記ボビンケースに保持した位置関係で前記金属体の前面に前記コイルの巻線部分を投影したときに前記コイルの巻線部分の投影像が前記金属体の前面に入りきるような大きさ及び位置関係であることを特徴とするコイル部品を提供する。
　上記構成のコイル部品において、周波数帯域によってほぼ大きさが規定されてしまうコイルの巻線部分に比べて、金属体の前面の大きさについては自由度が大きい。その金属体を、コイルの巻線部分の投影像が金属体の前面にちょうど入るような大きさ及び位置関係にしてコイルに近接配置すると、金属体を設けない場合と比べて約－７．６ｄＢほど結合強度が向上し、コイルのアンテナとしての機能を十分に高めることが出来た。また、それより金属体の前面を大きくすると、特性がさらに良好になるが、占有空間が大きくなってしまう。そこで、コイル部品を使用する電子装置の内部空間サイズや電子装置が求めている特性に合わせて金属体の前面の大きさを適宜選択することが好ましい。 In a second aspect, the present invention provides the coil component according to the first aspect, wherein the winding portion of the coil and the metal body are in a positional relationship in which the coil and the metal body are held in the bobbin case. A coil component having a size and a positional relationship such that a projection image of the coil winding portion can be completely inserted into the front surface of the metal body when the coil winding portion is projected on the front surface of the body. provide.
In the coil component having the above-described configuration, the degree of freedom of the size of the front surface of the metal body is greater than the winding portion of the coil whose size is almost defined by the frequency band. When the metal body is arranged close to the coil in such a size and positional relationship that the projected image of the winding portion of the coil just enters the front surface of the metal body, it is about −7.6 dB compared to the case where the metal body is not provided. The coupling strength was improved and the function of the coil as an antenna could be sufficiently enhanced. Further, when the front surface of the metal body is made larger than that, the characteristics are further improved, but the occupied space becomes larger. Therefore, it is preferable to appropriately select the size of the front surface of the metal body in accordance with the internal space size of the electronic device using the coil component and the characteristics required by the electronic device.
　第３の観点では、本発明は、前記第１または第２の観点によるコイル部品において、前記コイルの両端部は前記ボビンケースの基板実装面に露出してコイル端子部となり、前記金属体の少なくとも一部は前記ボビンケースの基板実装面に露出して金属体端子部となり、さらに前記ボビンケースの基板実装面の少なくとも１ヶ所には金属製のボビン固定端子部が設置されていることを特徴とするコイル部品を提供する。
　上記構成により、電子装置の基板面に半田リフローでコイル端子部および金属体端子部およびボビン固定端子部を電気的・機械的に接続することが出来る。 In a third aspect, the present invention provides the coil component according to the first or second aspect, wherein both end portions of the coil are exposed to a board mounting surface of the bobbin case to become coil terminal portions, and at least the metal body A part is exposed to the board mounting surface of the bobbin case to become a metal body terminal part, and a metal bobbin fixing terminal part is installed in at least one place on the board mounting surface of the bobbin case. Coil parts to be provided are provided.
With the configuration described above, the coil terminal portion, the metal body terminal portion, and the bobbin fixing terminal portion can be electrically and mechanically connected to the substrate surface of the electronic device by solder reflow.
　第４の観点では、本発明は、前記第３の観点によるコイル部品において、前記コイルの両端部を平板状に加工して前記ボビンケースの基板実装面側端部に巻き付け且つ基板実装面に露出する部分の絶縁被覆を除去し半田めっきしてコイル端子部としたことを特徴とするコイル部品を提供する。
　上記構成により、コイルの両端部をボビンケースに固定することが出来る。また、コイルの両端部を端子として利用することで、別の端子部品を不要とすることが出来る。さらに、基板実装面に露出する部分を半田リフローにより電子装置の基板面に半田付けできる。 In a fourth aspect, the present invention provides the coil component according to the third aspect, wherein both ends of the coil are processed into a flat plate shape, wound around the board mounting surface side end of the bobbin case, and exposed to the board mounting surface. A coil component is provided in which a portion of the insulating coating is removed and solder plating is performed to form a coil terminal portion.
With the above configuration, both ends of the coil can be fixed to the bobbin case. Further, by using both end portions of the coil as terminals, it is possible to eliminate another terminal component. Furthermore, the portion exposed to the board mounting surface can be soldered to the board surface of the electronic device by solder reflow.
　第５の観点では、本発明は、前記第１から第４の観点によるコイル部品において、前記ボビンケースは、マウンターで吸着可能な吸着面を前記基板実装面と反対側に備えたことを特徴とするコイル部品を提供する。
　上記構成により、コイル部品を電子装置の基板に実装する際に、自動実装吸引マウンターを利用することが出来る。 In a fifth aspect, the present invention provides the coil component according to any one of the first to fourth aspects, wherein the bobbin case has an adsorption surface that can be adsorbed by a mounter on the side opposite to the substrate mounting surface. Coil parts to be provided are provided.
With the above configuration, the automatic mounting suction mounter can be used when the coil component is mounted on the substrate of the electronic device.
　第６の観点では、本発明は、コイル部品と、前記コイル部品を前面に固定したフレキシブル・プリント基板とを具備してなり、前記コイル部品は、前後方向にアンテナ指向性を有するコイルと、前記コイルを収容する空間であるコイル収容空間および前記フレキシブル・プリント基板の前面に固定される面であって且つ前記コイルのアンテナ指向性の方向と直交又はほぼ直交する面である基板実装面を有するボビンケースとを備え、前記フレキシブル・プリント基板は、前記コイル部品が固定されるコイル部品領域と、前記コイル部品領域と直交又はほぼ直交するように折り曲げ可能な折り曲げ領域と、前記コイルの前方の感度を高めるように前記コイルの後方に配置される金属層とを備えることを特徴とするコイル部品ユニットを提供する。
　上記構成のコイル部品ユニットでは、コイル部品領域と直交又はほぼ直交するように折り曲げた状態でフレキシブル・プリント基板の折り曲げ領域を電子装置の基板に固定すれば、電子装置の基板面に平行又はほぼ平行な方向にコイルの感度を延ばすことが出来る。そして、コイルの一端と金属層とを電子装置の基板のグランドに電気的に接続することで、コイルの前方での磁界および電界が増加する。これらの結果、電子装置の基板面に平行又はほぼ平行な方向で且つコイル部品から一方向に高い感度で延びている感度領域を形成できる。
　そして、電子装置が例えばデジタル・カメラで、その基板面がデジタル・カメラの上下左右の方向に広がっている場合、コイル部品の感度領域がデジタル・カメラの下方向に高い感度で延びている状態とすることが出来る。従って、例えばクレードルに内蔵され且つ上下方向にアンテナ指向性を有するアンテナと近接通信させるためにクレードルにデジタル・カメラを載置するとき、デジタル・カメラを立てた状態で載置可能となる。 In a sixth aspect, the present invention comprises a coil component and a flexible printed circuit board in which the coil component is fixed to the front surface. The coil component includes a coil having antenna directivity in the front-rear direction; A bobbin having a coil housing space which is a space for housing a coil and a board mounting surface which is a surface fixed to the front surface of the flexible printed circuit board and which is a surface orthogonal to or substantially orthogonal to the direction of antenna directivity of the coil A flexible printed circuit board, wherein the flexible printed circuit board has a coil component region to which the coil component is fixed, a bending region that can be folded so as to be orthogonal or substantially orthogonal to the coil component region, and sensitivity in front of the coil. A coil component unit comprising: a metal layer disposed behind the coil so as to be enhanced.
In the coil component unit configured as described above, if the bent region of the flexible printed circuit board is fixed to the substrate of the electronic device in a state of being orthogonally or substantially orthogonal to the coil component region, it is parallel or substantially parallel to the substrate surface of the electronic device. Coil sensitivity can be extended in any direction. Then, by electrically connecting one end of the coil and the metal layer to the ground of the substrate of the electronic device, a magnetic field and an electric field in front of the coil are increased. As a result, it is possible to form a sensitivity region extending with high sensitivity in one direction from the coil component in a direction parallel or substantially parallel to the substrate surface of the electronic device.
And when the electronic device is a digital camera, for example, and its substrate surface extends in the vertical and horizontal directions of the digital camera, the sensitivity area of the coil component extends with high sensitivity downward in the digital camera. I can do it. Therefore, for example, when a digital camera is placed on the cradle in order to perform near field communication with an antenna built in the cradle and having antenna directivity in the vertical direction, the digital camera can be placed in a standing state.
　本発明のコイル部品およびコイル部品ユニットによれば、電子装置の基板面に平行又はほぼ平行な方向で且つコイル部品から一方向に高い感度で延びている感度領域を形成できる。 According to the coil component and the coil component unit of the present invention, it is possible to form a sensitivity region extending with high sensitivity in one direction from the coil component in a direction parallel or substantially parallel to the substrate surface of the electronic device.
実施例１に係るコイル部品を示す（ａ）平面図、（ｂ）正面図、（ｃ）右側面図および（ｄ）底面図である。It is (a) top view, (b) front view, (c) right side view, and (d) bottom view showing the coil component according to the first embodiment. 実施例１に係るコイル部品を示す斜視図である。1 is a perspective view showing a coil component according to Embodiment 1. FIG. 実施例１に係るコイル部品を示す分解斜視図である。1 is an exploded perspective view showing a coil component according to Embodiment 1. FIG. 実施例１に係るコイルを示す（ａ）正面図および（ｂ）右側面図である。It is the (a) front view and (b) right view which show the coil which concerns on Example 1. FIG. 実施例１に係る金属体を示す（ａ）正面図、（ｂ）右側面図および（ｃ）底面図である。It is the (a) front view which shows the metal body which concerns on Example 1, (b) The right view, and (c) The bottom view. 実施例１に係る金属体の前面へのコイルの巻線部分の投影像を示す正面図である。It is a front view which shows the projection image of the coil | winding part of the coil to the front surface of the metal body which concerns on Example 1. FIG. 実施例１に係るボビンケースを示す（ａ）平面図、（ｂ）正面図、（ｃ）右側面図および（ｄ）底面図である。It is the (a) top view which shows the bobbin case concerning Example 1, (b) front view, (c) right side view, and (d) bottom view. 実施例１に係るボビンケースを示す斜視図である。1 is a perspective view showing a bobbin case according to a first embodiment. 実施例１に係るコイル部品を実装したデジタル・カメラを示す（ａ）正面図、（ｂ）右側面図および（ｃ）底面図である。BRIEF DESCRIPTION OF THE DRAWINGS (a) Front view, (b) Right side view, and (c) Bottom view showing a digital camera mounted with coil components according to Embodiment 1. 実施例１に係るコイル部品を実装したデジタル・カメラとクレードルを示す右側面図である。It is a right view which shows the digital camera and cradle which mounted the coil components which concern on Example 1. FIG. 実施例１に係るコイル部品のギャップ距離比特性を示す（ａ）図表および（ｂ）グラフである。It is the (a) chart and (b) graph which show the gap distance ratio characteristic of the coil components which concern on Example 1. FIG. 実施例１に係るコイル部品の面積比特性を示す（ａ）図表および（ｂ）グラフである。It is the (a) chart and (b) graph which show the area ratio characteristic of the coil components which concern on Example 1. FIG. 実施例２に係るコイル部品を示す（ａ）正面図、（ｂ）右側面図および（ｃ）底面図である。It is the (a) front view, (b) right view, and (c) bottom view which show the coil components which concern on Example 2. FIG. 実施例３に係るコイル部品を示す（ａ）平面図、（ｂ）正面図、（ｃ）右側面図および（ｄ）底面図である。It is (a) top view, (b) front view, (c) right side view, and (d) bottom view showing a coil component according to the third embodiment. 実施例３に係る金属体を示す（ａ）正面図、（ｂ）右側面図および（ｃ）底面図である。It is the (a) front view which shows the metal body which concerns on Example 3, (b) The right view, and (c) The bottom view. 実施例４に係るコイル部品を示す（ａ）平面図、（ｂ）正面図、（ｃ）右側面図および（ｄ）底面図である。It is (a) top view, (b) front view, (c) right side view, and (d) bottom view showing a coil component according to Example 4. 実施例５に係るコイル部品ユニットを示す（ａ）正面図および（ｂ）右側面図である。It is the (a) front view and the (b) right view which show the coil component unit which concerns on Example 5. FIG. 実施例５に係るコイル部品を示す（ａ）平面図、（ｂ）正面図、（ｃ）右側面図、（ｄ）底面図および（ｅ）背面図である。It is (a) top view, (b) front view, (c) right side view, (d) bottom view, and (e) back view showing a coil component according to a fifth embodiment. 実施例５に係るボビンケースを示す（ａ）平面図、（ｂ）正面図、（ｃ）右側面図、（ｄ）底面図および（ｅ）背面図である。It is (a) top view, (b) front view, (c) right side view, (d) bottom view, and (e) back view showing a bobbin case according to a fifth embodiment. 実施例５に係るフレキシブル・プリント基板を示す（ａ）正面図、（ｂ）右側面図および（ｃ）背面図である。It is the (a) front view which shows the flexible printed circuit board concerning Example 5, (b) The right view and (c) The rear view. 実施例５に係る金属層へのコイルの巻線部分の投影像を示す正面図である。It is a front view which shows the projection image of the coil | winding part of the coil to the metal layer which concerns on Example 5. FIG. 実施例５に係るコイル部品ユニットを実装したデジタル・カメラを示す（ａ）正面図、（ｂ）右側面図および（ｃ）底面図である。(A) Front view, (b) Right side view, and (c) Bottom view showing a digital camera mounted with a coil component unit according to a fifth embodiment. 実施例５に係るコイル部品ユニットを実装したデジタル・カメラとクレードルを示す右側面図である。It is a right view which shows the digital camera and cradle which mounted the coil component unit which concerns on Example 5. FIG. 実施例６に係るコイル部品を示す（ａ）平面図、（ｂ）正面図、（ｃ）右側面図、（ｄ）底面図および（ｅ）背面図である。It is (a) top view, (b) front view, (c) right side view, (d) bottom view, and (e) back view showing a coil component according to Example 6.
　以下、図に示す実施の形態により本発明をさらに詳細に説明する。なお、これにより本発明が限定されるものではない。 Hereinafter, the present invention will be described in more detail with reference to embodiments shown in the drawings. Note that the present invention is not limited thereby.
－実施例１－
　図１の（ａ）は実施例１に係るコイル部品１０を示す平面図、（ｂ）は正面図、（ｃ）は右側面図、（ｄ）は底面図である。
　このコイル部品１０は、コイル１と、コイル１の後方に近接設置される金属体２と、コイル１および金属体２を保持するボビンケース３とを具備してなる。
　ボビンケース３の底面は、電子装置の基板面に固定される基板実装面である。 -Example 1-
1A is a plan view showing the coil component 10 according to the first embodiment, FIG. 1B is a front view, FIG. 1C is a right side view, and FIG. 1D is a bottom view.
The coil component 10 includes a coil 1, a metal body 2 installed close to the rear of the coil 1, and a bobbin case 3 that holds the coil 1 and the metal body 2.
The bottom surface of the bobbin case 3 is a board mounting surface fixed to the board surface of the electronic device.
　図２は、コイル部品１０の斜視図である。
　図３は、コイル部品１０の分解斜視図である。 FIG. 2 is a perspective view of the coil component 10.
FIG. 3 is an exploded perspective view of the coil component 10.
　図４の（ａ）は、コイル１の正面図、（ｂ）は右側面図である。
　コイル１は、絶縁被覆銅線をソレノイド状に巻回した巻線１ａ，１ｂを有するコ字形コイルである。巻線１ａの中心軸１ｃと巻線１ｂの中心軸１ｄとは平行である。
　コイル１の両端部は、平板状に加工してボビンケース３の端部に巻き付けうるように曲げられ、コイル端子部１ｅ，１ｆになっている。コイル端子部１ｅ，１ｆの少なくとも底面の絶縁被覆は除去され、半田めっきされている。図１の（ｄ）から判るように、基板実装面には、コイル端子部１ｅ，１ｆが露出している。
　図４の（ｂ）に示すように、コイル１は、前後方向にアンテナ指向性を有し、前方感度領域Ｆおよび後方感度領域Ｒが主たる感度領域である。図１から判るように、基板実装面は、コイル１のアンテナ指向性の方向と平行又はほぼ平行な面になる。 4A is a front view of the coil 1, and FIG. 4B is a right side view thereof.
The coil 1 is a U-shaped coil having windings 1a and 1b obtained by winding an insulation-coated copper wire in a solenoid shape. The central axis 1c of the winding 1a and the central axis 1d of the winding 1b are parallel.
Both end portions of the coil 1 are bent so as to be processed into a flat plate shape and wound around the end portion of the bobbin case 3 to form coil terminal portions 1e and 1f. The insulation coating on at least the bottom surface of the coil terminal portions 1e and 1f is removed and solder plated. As can be seen from FIG. 1D, the coil terminal portions 1e and 1f are exposed on the board mounting surface.
As shown in FIG. 4B, the coil 1 has antenna directivity in the front-rear direction, and the front sensitivity region F and the rear sensitivity region R are the main sensitivity regions. As can be seen from FIG. 1, the board mounting surface is a surface parallel or substantially parallel to the direction of the antenna directivity of the coil 1.
　図５の（ａ）は金属体２の正面図、（ｂ）は右側面図、（ｃ）は底面図である。
　金属体２は、銅の金属板であり、下端部の一部がＬ字形に曲げられて、金属体端子部２ａ，２ｂになっている。図１の（ｄ）から判るように、基板実装面には、金属体端子部２ａ，２ｂが露出している。 5A is a front view of the metal body 2, FIG. 5B is a right side view, and FIG. 5C is a bottom view.
The metal body 2 is a copper metal plate, and part of the lower end is bent into an L shape to form metal body terminal portions 2a and 2b. As can be seen from FIG. 1D, the metal terminal portions 2a and 2b are exposed on the board mounting surface.
　図６に示すように、コイル１および金属体２をボビンケース３に保持した位置関係で金属体２の前面にコイル１の巻線１ａ，１ｂの部分を正面側から投影したとき、コイル１の巻線１ａ，１ｂの部分の投影像１ｐが金属体２の前面に入りきるように、金属体２の大きさ及び位置が設定されている。なお、コイル１は、周波数帯域により大きさが規定されている。
　数値例を示すと、周波数帯域がＧＨｚ帯のとき、コイル１の巻線１ａ，１ｂの長さＬａは約３．２ｍｍであり、コイル１の幅Ｌｂは約５ｍｍである。また、コイル部品１０を使用する電子装置の内部空間サイズや電子装置が求めている特性に合わせて、金属体２の前面の高さＣａは約３．２ｍｍ～約８ｍｍ、幅Ｃｂは約５ｍｍ～約８ｍｍの間の値に選択される。 As shown in FIG. 6, when the portions of the windings 1 a and 1 b of the coil 1 are projected from the front side on the front surface of the metal body 2 in a positional relationship where the coil 1 and the metal body 2 are held in the bobbin case 3, The size and position of the metal body 2 are set so that the projected image 1p of the portions of the windings 1a and 1b can enter the front surface of the metal body 2. The size of the coil 1 is defined by the frequency band.
As a numerical example, when the frequency band is the GHz band, the length La of the windings 1a and 1b of the coil 1 is about 3.2 mm, and the width Lb of the coil 1 is about 5 mm. Further, the height Ca of the front surface of the metal body 2 is about 3.2 mm to about 8 mm and the width Cb is about 5 mm to match the internal space size of the electronic device using the coil component 10 and the characteristics required by the electronic device. A value between about 8 mm is selected.
　図７の（ａ）はボビンケース３の平面図、（ｂ）は正面図、（ｃ）は右側面図、（ｄ）は底面図である。
　ボビンケース３は、合成樹脂製であり、コイル１を収容する空間であるコイル収容空間３ｇおよび金属体２を収容する空間である金属体収容空間３ｈを有する。
　コイル収容空間３ｇには、ボビンケース３に対するコイル１の位置を保持するために、コイル１の巻線１ａ，１ｂ内に挿入される突起３ｄ，３ｅが設けられている。 7A is a plan view of the bobbin case 3, FIG. 7B is a front view, FIG. 7C is a right side view, and FIG. 7D is a bottom view.
The bobbin case 3 is made of synthetic resin and has a coil housing space 3g that is a space for housing the coil 1 and a metal body housing space 3h that is a space for housing the metal body 2.
The coil housing space 3g is provided with projections 3d and 3e inserted into the windings 1a and 1b of the coil 1 in order to maintain the position of the coil 1 with respect to the bobbin case 3.
　図７の（ｄ）に示すように、基板実装面には、ボビンケース３に埋設された金属板の一部が露出し、ボビン固定端子部３ａ～３ｃになっている。
　図７の（ａ）に示すように、ボビンケース３は、基板実装面と反対側に、マウンターで吸着可能な吸着面３ｆを備えている。 As shown in FIG. 7D, a part of the metal plate embedded in the bobbin case 3 is exposed on the board mounting surface to form bobbin fixing terminal portions 3a to 3c.
As shown in FIG. 7A, the bobbin case 3 includes an adsorption surface 3f that can be adsorbed by a mounter on the side opposite to the substrate mounting surface.
　図８は、ボビンケース３の斜視図である。 FIG. 8 is a perspective view of the bobbin case 3.
　図９の（ａ）はコイル部品１０を実装したデジタル・カメラ１００の正面図、（ｂ）は右側面図、（ｃ）は底面図である。
　デジタル・カメラ１００の基板１００ａは、デジタル・カメラ１００の上下左右の方向に広がっている。
　コイル部品１０は、コイル部品１０の正面を下向きにして、基板１００ａの下端部に半田付けされている。すなわち、コイル１のコイル端子部１ｅが回路入力となる配線パタンに半田付けされ、コイル１のコイル端子部１ｆがグランドとなる配線パタンに半田付けされ、金属体２の金属体端子部２ａ，２ｂがグランドとなる配線パタンに半田付けされ、ボビンケース３のボビン固定端子部３ａ～３ｃがグランドとなる配線パタンに半田付けされている。 9A is a front view of the digital camera 100 on which the coil component 10 is mounted, FIG. 9B is a right side view, and FIG. 9C is a bottom view.
The substrate 100 a of the digital camera 100 extends in the vertical and horizontal directions of the digital camera 100.
The coil component 10 is soldered to the lower end portion of the substrate 100a with the front surface of the coil component 10 facing downward. That is, the coil terminal portion 1e of the coil 1 is soldered to a wiring pattern serving as a circuit input, the coil terminal portion 1f of the coil 1 is soldered to a wiring pattern serving as a ground, and the metal body terminal portions 2a and 2b of the metal body 2 Is soldered to the wiring pattern serving as the ground, and the bobbin fixing terminal portions 3a to 3c of the bobbin case 3 are soldered to the wiring pattern serving as the ground.
　図１０に示すように、このデジタル・カメラ１００は、立てた状態でクレードルＣに載置して、クレードルＣに内蔵され且つ上下方向にアンテナ指向性を有するアンテナＳと近接通信することが出来る。 As shown in FIG. 10, the digital camera 100 can be placed on the cradle C in an upright state, and can perform near field communication with an antenna S that is built in the cradle C and has antenna directivity in the vertical direction.
　図１１の（ａ）は、コイル１と金属体２の間のギャップの最短距離を変化させた場合の結合強度の変化を示す図表である。なお、Ｌａ＝３．２ｍｍ、Ｌｂ＝５ｍｍ、Ｃａ＝５．３ｍｍ、Ｃｂ＝５．０ｍｍ、周波数は４．４８ＧＨｚである。
　図１１の（ｂ）は、コイル１の巻線１ａ，１ｂの長さＬａに対するギャップの比（距離比と呼ぶ）を横軸とし、結合強度を縦軸としたグラフである。
　ギャップが小さいほど結合強度が高く、距離比が０．８を超えると急に結合強度が低下している。
　なお、結合強度とは、アンテナ特性評価の１つであるＳ２１特性（Ｓパラメータ）のことを指し、送信側アンテナ（コイル部品のコイル）から受信側アンテナ（１０ｍｍ程度離して対向させた別のコイル）への伝送特性を評価する指標である。送信側アンテナから受信側アンテナへ全く損失なく伝送出来た場合の結合強度は０ｄＢで、伝送損失が大きくなるほど結合強度は小さくなる。 FIG. 11A is a chart showing a change in the coupling strength when the shortest distance of the gap between the coil 1 and the metal body 2 is changed. Note that La = 3.2 mm, Lb = 5 mm, Ca = 5.3 mm, Cb = 5.0 mm, and the frequency is 4.48 GHz.
FIG. 11B is a graph in which the horizontal axis represents the ratio of the gap to the length La of the windings 1a and 1b of the coil 1 (referred to as the distance ratio), and the vertical axis represents the coupling strength.
The smaller the gap, the higher the bond strength. When the distance ratio exceeds 0.8, the bond strength suddenly decreases.
The coupling strength refers to the S21 characteristic (S parameter), which is one of the antenna characteristic evaluations, and is another coil facing the receiving antenna (approximately 10 mm apart) from the transmitting antenna (coil of the coil component). ) Is an index for evaluating the transmission characteristics. When transmission is possible from the transmitting antenna to the receiving antenna without any loss, the coupling strength is 0 dB, and the coupling strength decreases as the transmission loss increases.
　図１２の（ａ）は、金属体２の縦幅Ｃａと横幅Ｃｂを変化させた場合の結合強度の変化を示す図表である。なお、Ｌａ＝３．２ｍｍ、Ｌｂ＝５ｍｍ、ギャップ＝０．５ｍｍ、周波数は４．４８ＧＨｚである。
　図１２の（ｂ）は、コイル１の巻線部分を囲む四角形の面積Ｌａ×Ｌｂに対する金属体２を囲む四角形の面積Ｃａ×Ｃｂの比（面積比と呼ぶ）を横軸とし、結合強度を縦軸としたグラフである。
　金属体１の縦幅Ｃａ，横幅Ｃｂを大きくするほど結合強度が高くなるが、面積比が３以上になると結合強度は飽和している。 (A) of FIG. 12 is a table | surface which shows the change of the coupling strength when the vertical width Ca and the horizontal width Cb of the metal body 2 are changed. Note that La = 3.2 mm, Lb = 5 mm, gap = 0.5 mm, and frequency is 4.48 GHz.
In FIG. 12B, the horizontal axis represents the ratio of the area Ca × Cb of the rectangle surrounding the metal body 2 to the area La × Lb of the rectangle surrounding the winding portion of the coil 1 (referred to as area ratio), and the coupling strength is It is the graph which made the vertical axis | shaft.
The bond strength increases as the vertical width Ca and the horizontal width Cb of the metal body 1 are increased. However, when the area ratio is 3 or more, the bond strength is saturated.
　図１１，図１２の結果から、ギャップ比は０．８以下とし、面積比は１～３とするのが好ましいことが判る。 11 and 12 that the gap ratio is preferably 0.8 or less and the area ratio is preferably 1 to 3.
－実施例２－
　図１３の（ａ）は実施例２に係るコイル部品２０の正面図、（ｂ）は右側面図、（ｃ）は底面図である。
　ボビンケース４の底面が段差４ｇになっており、段差のある基板の段差部分に整合する底面形状になっている。ボビンケース４の底面が段差４ｇになっている以外は、実施例１と同じ構成である。 -Example 2-
FIG. 13A is a front view of the coil component 20 according to the second embodiment, FIG. 13B is a right side view, and FIG. 13C is a bottom view.
The bottom surface of the bobbin case 4 has a step 4g, and has a bottom shape that matches the step portion of the stepped substrate. Except for the bottom surface of the bobbin case 4 being a step 4g, the configuration is the same as that of the first embodiment.
－実施例３－
　図１４の（ａ）は実施例３に係るコイル部品３０の平面図、（ｂ）は正面図、（ｃ）は右側面図、（ｄ）は底面図である。
　金属体５の左右端部が折り曲げられてリブになっており、機械的強度が高められている。金属体５の左右端部が折り曲げられてリブになっている以外は、実施例１と同じ構成である。
　図１５の（ａ）は金属体２の正面図、（ｂ）は右側面図、（ｃ）は底面図である。 -Example 3-
14A is a plan view of the coil component 30 according to the third embodiment, FIG. 14B is a front view, FIG. 14C is a right side view, and FIG. 14D is a bottom view.
The left and right ends of the metal body 5 are bent to form ribs, and the mechanical strength is increased. The structure is the same as that of the first embodiment except that the left and right ends of the metal body 5 are bent into ribs.
15A is a front view of the metal body 2, FIG. 15B is a right side view, and FIG. 15C is a bottom view.
－実施例４－
　図１６の（ａ）は実施例４に係るコイル部品７０を示す平面図、（ｂ）は正面図、（ｃ）は右側面図、（ｄ）は底面図である。
　このコイル部品７０は、コイル７として絶縁被覆平角銅線をソレノイド状に巻回し且つ扁平に変形させた巻線７ａ，７ｂを有するコ字形コイルを用いていることと、コイル７に適合する形状のボビンケース８を用いていること以外は、実施例１と同じ構成である。 -Example 4-
16A is a plan view showing the coil component 70 according to the fourth embodiment, FIG. 16B is a front view, FIG. 16C is a right side view, and FIG. 16D is a bottom view.
The coil component 70 uses a U-shaped coil having windings 7 a and 7 b obtained by winding an insulation-coated flat copper wire in a solenoid shape and deformed flatly as the coil 7, and has a shape suitable for the coil 7. The configuration is the same as that of the first embodiment except that the bobbin case 8 is used.
　コイル７の両端部は、ボビンケース８の端部に巻き付けうるように曲げられ、コイル端子部７ｅ，７ｆになっている。コイル端子部７ｅ，７ｆの少なくとも底面の絶縁被覆は除去され、半田めっきされている。図１６の（ｄ）から判るように、基板実装面には、コイル端子部７ｅ，７ｆが露出している。 Both end portions of the coil 7 are bent so as to be wound around the end portion of the bobbin case 8 to form coil terminal portions 7e and 7f. The insulation coating on at least the bottom surface of the coil terminal portions 7e and 7f is removed and solder plated. As can be seen from FIG. 16D, the coil terminal portions 7e and 7f are exposed on the board mounting surface.
　ボビンケース８は、合成樹脂製であり、コイル７を収容する空間であるコイル収容空間および金属体２を収容する空間である金属体収容空間を有する。
　コイル収容空間には、ボビンケース８に対するコイル７の位置を保持するために、コイル７の巻線７ａ，７ｂ内に挿入される突起８ｄ，８ｅが設けられている。 The bobbin case 8 is made of synthetic resin and has a coil housing space that is a space for housing the coil 7 and a metal body housing space that is a space for housing the metal body 2.
In the coil housing space, projections 8 d and 8 e are provided to be inserted into the windings 7 a and 7 b of the coil 7 in order to maintain the position of the coil 7 with respect to the bobbin case 8.
　図１６の（ｄ）に示すように、基板実装面には、ボビンケース８に埋設された金属板の一部が露出し、ボビン固定端子部８ａ～８ｃになっている。
　図１６の（ａ）に示すように、ボビンケース８は、基板実装面と反対側に、マウンターで吸着可能な吸着面８ｆを備えている。 As shown in FIG. 16D, a part of the metal plate embedded in the bobbin case 8 is exposed on the board mounting surface to form bobbin fixing terminal portions 8a to 8c.
As shown in FIG. 16A, the bobbin case 8 includes a suction surface 8f that can be suctioned by a mounter on the side opposite to the board mounting surface.
　実施例４では、絶縁被覆平角銅線をソレノイド状に巻回し且つ扁平に変形させた巻線７ａ，７ｂを有するコイル７を用いているため、コイル７の部分の厚さを減らすことが出来る。 In Example 4, since the coil 7 having the windings 7a and 7b in which the insulation-coated flat copper wire is wound in a solenoid shape and deformed flatly is used, the thickness of the coil 7 can be reduced.
－実施例５－
　図１７の（ａ）は実施例５に係るコイル部品ユニット６０を示す正面図、（ｂ）は右側面図である。
　このコイル部品ユニット６０は、コイル部品４０と、コイル部品４０を前面に固定したフレキシブル・プリント基板５０とを具備してなる。
　フレキシブル・プリント基板５０の前面には、配線パタン５０ａ，５０ｂ，５０ｃ，５０ｄ，５０ｅが形成され、抵抗チップ５１，５２やコネクタ５３が固定されている。
　フレキシブル・プリント基板５０の後面には、金属層５０ｆが全面的に形成されている。
　フレキシブル・プリント基板５０の前面の配線パタン５０ａ，５０ｂ，５０ｅとフレキシブル・プリント基板５０の後面の金属層５０ｆとはスルーホール５０ｇで電気的に接続されており、これらは電子装置のグランドに接続される。 -Example 5
FIG. 17A is a front view showing the coil component unit 60 according to the fifth embodiment, and FIG. 17B is a right side view thereof.
The coil component unit 60 includes a coil component 40 and a flexible printed board 50 having the coil component 40 fixed to the front surface.
Wiring patterns 50a, 50b, 50c, 50d, and 50e are formed on the front surface of the flexible printed board 50, and the resistor chips 51 and 52 and the connector 53 are fixed.
A metal layer 50 f is formed on the entire rear surface of the flexible printed board 50.
The wiring patterns 50a, 50b, 50e on the front surface of the flexible printed circuit board 50 and the metal layer 50f on the rear surface of the flexible printed circuit board 50 are electrically connected through a through hole 50g, and these are connected to the ground of the electronic device. The
　図１８の（ａ）は実施例５に係るコイル部品４０を示す平面図、（ｂ）は正面図、（ｃ）は右側面図、（ｄ）は底面図、（ｅ）は背面図である。
　コイル部品４０は、前後方向にアンテナ指向性を有するコイル１と、コイル１を収容する空間であるコイル収容空間およびフレキシブル・プリント基板５０の前面に固定される面であって且つコイル１のアンテナ指向性の方向と直交又はほぼ直交する面である基板実装面を後面に有するボビンケース６とを備えている。 18A is a plan view showing the coil component 40 according to the fifth embodiment, FIG. 18B is a front view, FIG. 18C is a right side view, FIG. 18D is a bottom view, and FIG. .
The coil component 40 is a coil 1 that has antenna directivity in the front-rear direction, a coil housing space that is a space for housing the coil 1, and a surface that is fixed to the front surface of the flexible printed circuit board 50. And a bobbin case 6 having a substrate mounting surface on the rear surface which is a surface orthogonal or substantially orthogonal to the direction of the characteristics.
　コイル１は、図４に示すものであり、絶縁被覆銅線をソレノイド状に巻回した巻線１ａ，１ｂを有するコ字形コイルである。コイル１の両端部は、平板状に加工してボビンケース６の端部に巻き付けうるように曲げられ、コイル端子部１ｈ，１ｇになっている。コイル端子部１ｈ，１ｇの少なくとも後面の絶縁被覆は除去され、半田めっきされている。図１８の（ｅ）から判るように、基板実装面には、コイル端子部１ｈ，１ｇが露出している。 The coil 1 is shown in FIG. 4, and is a U-shaped coil having windings 1a and 1b obtained by winding an insulation-coated copper wire in a solenoid shape. Both ends of the coil 1 are bent so as to be processed into a flat plate shape and wound around the end of the bobbin case 6 to form coil terminal portions 1h and 1g. The insulation coating on at least the rear surface of the coil terminal portions 1h and 1g is removed and solder-plated. As can be seen from FIG. 18E, the coil terminal portions 1h and 1g are exposed on the board mounting surface.
　図１９の（ａ）はボビンケース６の平面図、（ｂ）は正面図、（ｃ）は右側面図、（ｄ）は底面図、（ｅ）は背面図である。
　ボビンケース６は、合成樹脂製であり、コイル１を収容する空間であるコイル収容空間６ｇを有する。
　コイル収容空間６ｇには、ボビンケース６に対するコイル１の位置を保持するために、コイル１の巻線１ａ，１ｂ内に挿入される突起６ｄ，６ｅが設けられている。 19A is a plan view of the bobbin case 6, FIG. 19B is a front view, FIG. 19C is a right side view, FIG. 19D is a bottom view, and FIG.
The bobbin case 6 is made of synthetic resin and has a coil housing space 6g that is a space for housing the coil 1.
The coil housing space 6g is provided with protrusions 6d and 6e inserted into the windings 1a and 1b of the coil 1 in order to maintain the position of the coil 1 with respect to the bobbin case 6.
　図１９の（ｅ）に示すように、基板実装面には、ボビンケース６に埋設された金属板の一部が露出し、ボビン固定端子部６ａになっている。
　図１９の（ｂ）に示すように、ボビンケース６は、基板実装面と反対側に、マウンターで吸着可能な吸着面６ｆを備えている。 As shown in FIG. 19E, a part of the metal plate embedded in the bobbin case 6 is exposed on the board mounting surface to form a bobbin fixing terminal portion 6a.
As shown in FIG. 19B, the bobbin case 6 includes a suction surface 6f that can be sucked by a mounter on the side opposite to the substrate mounting surface.
　図２０の（ａ）はフレキシブル・プリント基板５０の正面図、（ｂ）は右側面図、（ｃ）は背面図である。
　フレキシブル・プリント基板５０は、コイル部品４０が固定されるコイル部品領域５１と、コイル部品領域５１と直交又はほぼ直交するように折り曲げ可能な折り曲げ領域５２とを備えている。 20A is a front view of the flexible printed board 50, FIG. 20B is a right side view, and FIG. 20C is a rear view.
The flexible printed board 50 includes a coil component region 51 to which the coil component 40 is fixed, and a bending region 52 that can be bent so as to be orthogonal or substantially orthogonal to the coil component region 51.
　折り曲げ領域５２の配線パタン５０ｂ，５０ｄ，５０ｅおよび後面の金属層５０ｆは、マイクロ・ストリップ・ラインを構成しており、電子装置の基板とそのまま接続でき、接続のための同軸ケーブルを必要とせず、部品点数を減らすことが出来る。なお、図示しないが、マイクロ・ストリップ・ラインを構成する配線パタン５０ｂ，５０ｄ，５０ｅの部分は、シールド材で覆われ、外部ノイズの影響を抑制している。 The wiring patterns 50b, 50d, 50e in the bent region 52 and the metal layer 50f on the rear surface constitute a microstrip line, which can be directly connected to the substrate of the electronic device, and does not require a coaxial cable for connection. The number of parts can be reduced. Although not shown, the wiring patterns 50b, 50d and 50e constituting the micro strip line are covered with a shielding material to suppress the influence of external noise.
　コイル部品４０は、コイル１のコイル端子部１ｇが回路入力となる配線パタン５０ｃに半田付けされ、コイル１のコイル端子部１ｈがグランドとなる配線パタン５０ｅに半田付けされ、ボビンケース６のボビン固定端子部６ａが配線パタン５０ａに半田付けされている。 In the coil component 40, the coil terminal portion 1g of the coil 1 is soldered to the wiring pattern 50c serving as a circuit input, the coil terminal portion 1h of the coil 1 is soldered to the wiring pattern 50e serving as the ground, and the bobbin case 6 is fixed to the bobbin case 6 The terminal portion 6a is soldered to the wiring pattern 50a.
　図２１に示すように、コイル部品４０をフレキシブル・プリント基板５０に固定した位置関係でコイル部品領域５１の背面に当る金属層５０ｆの部分にコイル１の巻線１ａ，１ｂの部分を正面側から投影したとき、コイル１の巻線１ａ，１ｂの部分の投影像１ｐがコイル部品領域５１の背面に当る金属層５０ｆの部分に入りきるように、金属層５０ｆの大きさ及び位置が設定されている。なお、コイル１は、周波数帯域により大きさが規定されている。
　数値例を示すと、周波数帯域がＧＨｚ帯のとき、コイル１の巻線１ａ，１ｂの長さＬａは約３．２ｍｍであり、コイル１の幅Ｌｂは約５ｍｍである。また、コイル部品４０を使用する電子装置の内部空間サイズや電子装置が求めている特性に合わせて、コイル部品領域５１の背面に当る金属層５０ｆの部分の高さＣａは約３．２ｍｍ～約８ｍｍ、幅Ｃｂは約５ｍｍ～約８ｍｍの間の値に選択される。 As shown in FIG. 21, the portions of the windings 1a and 1b of the coil 1 are seen from the front side on the portion of the metal layer 50f that contacts the back surface of the coil component region 51 in a positional relationship where the coil component 40 is fixed to the flexible printed board 50. The size and position of the metal layer 50f are set so that the projected image 1p of the portions of the windings 1a and 1b of the coil 1 can enter the portion of the metal layer 50f that hits the back surface of the coil component region 51 when projected. Yes. The size of the coil 1 is defined by the frequency band.
As a numerical example, when the frequency band is the GHz band, the length La of the windings 1a and 1b of the coil 1 is about 3.2 mm, and the width Lb of the coil 1 is about 5 mm. Further, the height Ca of the portion of the metal layer 50f that hits the back surface of the coil component region 51 is adjusted to about 3.2 mm to about 3.2 mm in accordance with the internal space size of the electronic device using the coil component 40 and the characteristics required by the electronic device. 8 mm and the width Cb is selected to be a value between about 5 mm and about 8 mm.
　図２２の（ａ）はコイル部品４０を実装したデジタル・カメラ２００の正面図、（ｂ）は右側面図、（ｃ）は底面図である。
　デジタル・カメラ２００の基板２００ａは、デジタル・カメラ２００の上下左右の方向に広がっている。
　コイル部品ユニット６０は、コイル部品領域５１と直交又はほぼ直交するように折り曲げられた折り曲げ領域５２で基板２００ａの下端部に半田付けされている。コイル１の感度領域は、デジタル・カメラ２００の下方に延びている。 22A is a front view of the digital camera 200 on which the coil component 40 is mounted, FIG. 22B is a right side view, and FIG. 22C is a bottom view.
The substrate 200a of the digital camera 200 extends in the vertical and horizontal directions of the digital camera 200.
The coil component unit 60 is soldered to the lower end portion of the substrate 200 a in a bent region 52 that is bent so as to be orthogonal or substantially orthogonal to the coil component region 51. The sensitivity region of the coil 1 extends below the digital camera 200.
　図２３に示すように、このデジタル・カメラ２００は、立てた状態でクレードルＣに載置して、クレードルＣに内蔵され且つ上下方向にアンテナ指向性を有するアンテナＳと近接通信することが出来る。 As shown in FIG. 23, the digital camera 200 can be placed on the cradle C in an upright state, and can perform near field communication with the antenna S built in the cradle C and having antenna directivity in the vertical direction.
－実施例６－
　実施例５におけるコイル部品４０に代えて、図２４に示すコイル部品８０を用いてもよい。
　このコイル部品８０は、コイル７として絶縁被覆平角銅線をソレノイド状に巻回し且つ扁平に変形させた巻線７ａ，７ｂを有するコ字形コイルを用いていることと、コイル７に適合する形状のボビンケース９を用いていること以外は、実施例５におけるコイル部品４０と同じ構成である。 -Example 6-
A coil component 80 shown in FIG. 24 may be used in place of the coil component 40 in the fifth embodiment.
The coil component 80 uses a U-shaped coil having windings 7 a and 7 b obtained by winding an insulation-coated flat copper wire in a solenoid shape and deforming it flatly as the coil 7, and having a shape suitable for the coil 7. Except for using the bobbin case 9, the configuration is the same as that of the coil component 40 in the fifth embodiment.
　コイル７の両端部は、ボビンケース９の端部に巻き付けうるように曲げられ、コイル端子部７ｈ，７ｇになっている。コイル端子部７ｈ，７ｇの少なくとも後面の絶縁被覆は除去され、半田めっきされている。図２４の（ｅ）から判るように、基板実装面には、コイル端子部７ｈ，７ｇが露出している。 Both end portions of the coil 7 are bent so as to be wound around the end portion of the bobbin case 9 to form coil terminal portions 7h and 7g. The insulation coating on at least the rear surface of the coil terminal portions 7h and 7g is removed and solder plated. As can be seen from FIG. 24E, the coil terminal portions 7h and 7g are exposed on the board mounting surface.
　図２４の（ｂ）に示すように、ボビンケース９は、基板実装面と反対側に、マウンターで吸着可能な吸着面９ｆを備えている。 As shown in FIG. 24B, the bobbin case 9 includes a suction surface 9f that can be suctioned by a mounter on the side opposite to the board mounting surface.
　実施例６では、絶縁被覆平角銅線をソレノイド状に巻回し且つ扁平に変形させた巻線７ａ，７ｂを有するコイル７を用いているため、全体の厚さを減らすことが出来る。 In Example 6, since the coil 7 having the windings 7a and 7b obtained by winding an insulation-coated flat copper wire into a solenoid shape and deforming it into a flat shape is used, the overall thickness can be reduced.
　本発明のコイル部品およびコイル部品ユニットは、例えばＧＨｚ帯のアンテナコイルとして利用することが出来る。 The coil component and the coil component unit of the present invention can be used as an antenna coil in the GHz band, for example.
　１　　　　　　　　　　　　　　　　　コイル
　１ａ，１ｂ　　　　　　　　　　　　　コイルの巻線
　１ｃ，１ｄ　　　　　　　　　　　　　巻線の中心軸
　１ｅ，１ｂ　　　　　　　　　　　　　コイル端子部
　２，５　　　　　　　　　　　　　　　金属体
　２ａ，２ｂ　　　　　　　　　　　　　金属体端子部
　３，４　　　　　　　　　　　　　　　ボビンケース
　３ａ，３ｂ，３ｃ　　　　　　　　　　ボビン固定端子部
　３ｄ，３ｅ　　　　　　　　　　　　　突起
　３ｆ　　　　　　　　　　　　　　　　吸着面
　３ｇ　　　　　　　　　　　　　　　　コイル収容空間
　３ｈ　　　　　　　　　　　　　　　　金属体収容空間
　４ｇ　　　　　　　　　　　　　　　　段差
　１０，２０，３０，４０　　　　　　　コイル部品
　５０　　　　　　　　　　　　　　　　フレキシブル・プリント基板
　５０ｆ　　　　　　　　　　　　　　　金属層
　５１　　　　　　　　　　　　　　　　コイル部品領域
　５２　　　　　　　　　　　　　　　　折り曲げ領域
　６０　　　　　　　　　　　　　　　　コイル部品ユニット
　１００，２００　　　　　　　　　　　デジタル・カメラ
　Ｃ　　　　　　　　　　　　　　　　　クレードル
　Ｓ　　　　　　　　　　　　　　　　　アンテナ 1 Coil 1a, 1b Coil winding 1c, 1d Coil axis 1e, 1b Coil terminal part 2,5 Metal body 2a, 2b Metal body terminal part 3, 4 Bobbin case 3a, 3b, 3c Bobbin fixing terminal part 3d , 3e Projection 3f Suction surface 3g Coil housing space 3h Metal body housing space 4g Step 10, 20, 30, 40 Coil component 50 Flexible printed circuit board 50f Metal layer 51 Coil component region 52 Bending region 60 Coil component unit 100, 200 Digital Camera C Cradle S Antenna

Claims (6)

  1. 前後方向にアンテナ指向性を有するコイルと、前記コイルの前方の感度を高めるように前記コイルの後方に近接設置される金属体と、前記コイルを収容する空間であるコイル収容空間および前記金属体を収容する空間である金属体収容空間および電子装置の基板面に固定される面であって且つ前記コイルのアンテナ指向性の方向と平行又はほぼ平行な面である基板実装面を有するボビンケースとを具備してなることを特徴とするコイル部品。 A coil having antenna directivity in the front-rear direction, a metal body installed close to the rear of the coil so as to increase sensitivity in front of the coil, a coil housing space that is a space for housing the coil, and the metal body A metal body housing space that is a housing space and a bobbin case having a substrate mounting surface that is a surface that is fixed to the substrate surface of the electronic device and that is parallel or substantially parallel to the direction of the antenna directivity of the coil. A coil component comprising the coil component.
  2. 請求項１記載のコイル部品において、前記コイルの巻線部分および前記金属体が、前記コイルおよび前記金属体を前記ボビンケースに保持した位置関係で前記金属体の前面に前記コイルの巻線部分を投影したときに前記コイルの巻線部分の投影像が前記金属体の前面に入りきるような大きさ及び位置関係であることを特徴とするコイル部品。 2. The coil component according to claim 1, wherein the winding portion of the coil and the metal body are disposed on the front surface of the metal body in a positional relationship in which the coil and the metal body are held in the bobbin case. A coil component having a size and a positional relationship such that a projected image of a winding portion of the coil can enter the front surface of the metal body when projected.
  3. 請求項１または請求項２記載のコイル部品において、前記コイルの両端部は前記ボビンケースの基板実装面に露出してコイル端子部となり、前記金属体の少なくとも一部は前記ボビンケースの基板実装面に露出して金属体端子部となり、さらに前記ボビンケースの基板実装面の少なくとも１ヶ所には金属製のボビン固定端子部が設置されていることを特徴とするコイル部品。 3. The coil component according to claim 1, wherein both end portions of the coil are exposed to a substrate mounting surface of the bobbin case to become a coil terminal portion, and at least a part of the metal body is a substrate mounting surface of the bobbin case. A coil part characterized in that a metal bobbin fixing terminal part is installed at least at one place on the board mounting surface of the bobbin case.
  4. 請求項３に記載のコイル部品において、前記コイルの両端部を平板状に加工して前記ボビンケースの基板実装面側端部に巻き付け且つ基板実装面に露出する部分の絶縁被覆を除去し半田めっきしてコイル端子部としたことを特徴とするコイル部品。 4. The coil component according to claim 3, wherein both end portions of the coil are processed into a flat plate shape, wound around the end portion on the board mounting surface side of the bobbin case, and the portion of the insulating coating exposed on the board mounting surface is removed and solder plating is performed. Coil parts characterized by having a coil terminal portion.
  5. 請求項１から請求項４のいずれかに記載のコイル部品において、前記ボビンケースは、マウンターで吸着可能な吸着面を前記基板実装面と反対側に備えたことを特徴とするコイル部品。 5. The coil component according to claim 1, wherein the bobbin case includes an adsorption surface that can be adsorbed by a mounter on the side opposite to the substrate mounting surface.
  6. コイル部品と、前記コイル部品を前面に固定したフレキシブル・プリント基板とを具備してなり、
    　前記コイル部品は、前後方向にアンテナ指向性を有するコイルと、前記コイルを収容する空間であるコイル収容空間および前記フレキシブル・プリント基板の前面に固定される面であって且つ前記コイルのアンテナ指向性の方向と直交又はほぼ直交する面である基板実装面を有するボビンケースとを備え、
    　前記フレキシブル・プリント基板は、前記コイル部品が固定されるコイル部品領域と、前記コイル部品領域と直交又はほぼ直交するように折り曲げ可能な折り曲げ領域と、前記コイルの前方の感度を高めるように前記コイルの後方に配置される金属層とを備えることを特徴とするコイル部品ユニット。     Comprising a coil component and a flexible printed circuit board having the coil component fixed to the front surface;
    The coil component includes a coil having antenna directivity in the front-rear direction, a coil housing space that is a space for housing the coil, and a surface fixed to the front surface of the flexible printed circuit board, and the antenna directivity of the coil. A bobbin case having a substrate mounting surface which is a surface orthogonal or substantially orthogonal to the direction of
    The flexible printed circuit board includes a coil component region to which the coil component is fixed, a bending region that can be folded so as to be orthogonal or substantially orthogonal to the coil component region, and the coil so as to increase sensitivity in front of the coil. A coil component unit comprising: a metal layer disposed on the rear side of the coil component unit.
PCT/JP2010/068598 2010-10-21 2010-10-21 Coil component and coil component unit WO2012053089A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08279714A (en) * 1995-02-08 1996-10-22 Harada Ind Co Ltd Transmission and reception antenna
JP2006279180A (en) * 2005-03-28 2006-10-12 Tdk Corp Antenna device
JP2008042744A (en) * 2006-08-09 2008-02-21 Ntt Docomo Inc Antenna coil and portable electronic device
JP2008205898A (en) * 2007-02-21 2008-09-04 Nippon Soken Inc Antenna module
JP2009136022A (en) * 2004-03-12 2009-06-18 Sumida Corporation Antenna unit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08279714A (en) * 1995-02-08 1996-10-22 Harada Ind Co Ltd Transmission and reception antenna
JP2009136022A (en) * 2004-03-12 2009-06-18 Sumida Corporation Antenna unit
JP2006279180A (en) * 2005-03-28 2006-10-12 Tdk Corp Antenna device
JP2008042744A (en) * 2006-08-09 2008-02-21 Ntt Docomo Inc Antenna coil and portable electronic device
JP2008205898A (en) * 2007-02-21 2008-09-04 Nippon Soken Inc Antenna module

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