JP2008206287A - Noncontact charging electronic apparatus - Google Patents

Noncontact charging electronic apparatus Download PDF

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JP2008206287A
JP2008206287A JP2007038921A JP2007038921A JP2008206287A JP 2008206287 A JP2008206287 A JP 2008206287A JP 2007038921 A JP2007038921 A JP 2007038921A JP 2007038921 A JP2007038921 A JP 2007038921A JP 2008206287 A JP2008206287 A JP 2008206287A
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secondary coil
electronic device
back cover
outer frame
coil
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JP4737109B2 (en
JP2008206287A5 (en
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Takehide Yamada
岳秀 山田
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Seiko Epson Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a noncontact charging electronic apparatus wherein charging efficiency can be enhanced, deformation in a power storage source arising from charging can be absorbed, and thickness reduction can be achieved. <P>SOLUTION: The noncontact charging electronic apparatus 1 includes: a cylindrical outer frame 2; a back cover 4 that closes the opening of the outer frame 2 on one side; a secondary coil 14 that is disposed inside the back cover 4 and generates power by electromagnetic induction in a primary coil; and an accumulator 11 that stores power generated by the secondary coil 14. An elastic member 12 is placed between the secondary coil 14 and the accumulator 11. The secondary coil 14 is biased toward the back cover 4 by the elastic member 12. Therefore, the secondary coil 14 can be kept close to the primary coil by the elastic member 12. As a result, the distance between the secondary coil 14 and the primary coil is constantly reduced and the efficiency of charging the secondary coil 14 by the primary coil can be enhanced. The elastic member 12 can absorb change in the dimensions of the accumulator 11 and thus the apparatus can be thinned. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、充電式電子機器に関し、詳しくは、外部電源から非接触で充電を行う非接触充電式電子機器に関する。   The present invention relates to a rechargeable electronic device, and more particularly to a non-contact rechargeable electronic device that performs non-contact charging from an external power source.

近年、電子機器の多機能化に伴って、消費されるエネルギーが増加する傾向にある。特に携帯型の電子機器では、エネルギーを供給する頻度が増してきている。そのため、電源系に繰り返し充放電可能な充電式の電源を採用することが一般的となっている。充電方式としては、電磁誘導の原理によって、充電側の１次コイルから非充電側の２次コイルに電源を非接触で送電することによって充電を行う非接触型充電方式が知られ、特に気密性を要求される電子機器などに広く使用されている（例えば、特許文献１参照）。   In recent years, with the increase in functionality of electronic devices, energy consumed tends to increase. Particularly in portable electronic devices, the frequency of supplying energy is increasing. For this reason, it is common to employ a rechargeable power source that can be repeatedly charged and discharged in the power source system. As a charging method, there is known a non-contact type charging method in which charging is performed by transmitting power from a primary coil on the charging side to a secondary coil on the non-charging side in a non-contact manner based on the principle of electromagnetic induction. Are widely used in electronic devices and the like that are required (see, for example, Patent Document 1).

この特許文献１に記載の非接触型充電装置では、充電側の機器に１次コイルを搭載した送電用基板が内蔵され、被充電側の電子機器には、２次コイルを搭載した基板が内蔵されている。そして、電子機器を充電側の機器に設置した状態で、１次コイルと２次コイルとが互いに対向して配置され、１次コイルの電磁誘導によって２次コイルが発電し、被充電側の蓄電源に発電された電力が蓄えられる。
このような電磁誘導による充電を行う場合、１次コイルから２次コイルへのエネルギー送受の大きさＰは、Ｐ∝２πｆＬ（ｆ：充電周波数、Ｌ：発電コイルのインダクタンス）で表わされる。このエネルギー送受の大きさＰをできるだけ大きくするためには、電磁ノイズを抑えるために充電周波数ｆの上限が限定される場合を考慮すると、インダクタンスＬを増加させる必要がある。特に、スペースが限定される薄型・小型の電子機器の場合には、インダクタンスＬを増加させるために、一対のコイルを平型コイルとして、互いの軸芯が一致するように配置するとともに、１次コイルを２次コイルに対してできるだけ接近させることが望ましい。 In the non-contact type charging device described in Patent Document 1, a power transmission board having a primary coil is built in a charging-side device, and a board having a secondary coil is built in a charged-side electronic device. Has been. Then, in a state where the electronic device is installed on the charging side device, the primary coil and the secondary coil are arranged to face each other, the secondary coil generates power by electromagnetic induction of the primary coil, and the charged side storage is performed. The generated power is stored in the power source.
When performing charging by such electromagnetic induction, the magnitude P of energy transmission / reception from the primary coil to the secondary coil is expressed by P∝2πfL (f: charging frequency, L: inductance of the power generating coil). In order to increase the magnitude P of energy transmission / reception as much as possible, it is necessary to increase the inductance L in consideration of the case where the upper limit of the charging frequency f is limited in order to suppress electromagnetic noise. In particular, in the case of a thin and small electronic device in which space is limited, in order to increase the inductance L, a pair of coils are arranged as flat coils so that their axial centers coincide with each other, and the primary It is desirable to make the coil as close as possible to the secondary coil.

特開平９−１９０９３８号公報JP-A-9-190938

しかしながら、前記特許文献１に記載の非接触型充電装置のように、２次コイルを搭載した基板を有する電子機器では、通常、接着剤やネジなどを用いて、基板を筐体に固定する。このような場合、基板および筐体等の寸法のばらつきが原因となって、２次コイルと筐体との間に隙間が生じるので、インダクタンスＬが小さくなってしまう。すると、エネルギー送受の大きさＰが小さくなり、充電効率が低下するという問題が生じる。
また、被充電側の蓄電源として、リチウム系イオン蓄電池などの非水型の蓄電池を用いる場合には、溶媒が有機系物質であり、水分と反応すると劣化するので、通常、溶媒等が薄い袋状のパッケージに密封され、水分の浸入を防止することで劣化を防止している。このような構成の蓄電池では、充電時に微量のガスが発生するので、充放電を繰り返すことによって、密封されたパッケージの中心部が膨らむことが避けられない。そのため、蓄電池の厚さ寸法が充電に伴って厚くなっても、その変形を吸収できる空間を確保する必要があるが、このような空間を確保すると、電子機器が大きくなり、電子機器の薄型化に影響してしまう。 However, in an electronic apparatus having a substrate on which a secondary coil is mounted, such as the non-contact charging device described in Patent Document 1, usually, the substrate is fixed to the housing using an adhesive or a screw. In such a case, a gap is generated between the secondary coil and the casing due to variations in dimensions of the substrate and the casing, and the inductance L is reduced. Then, the magnitude P of energy transmission / reception becomes small, and the problem that charging efficiency falls arises.
In addition, when a non-aqueous storage battery such as a lithium ion storage battery is used as the storage power source on the charged side, the solvent is an organic substance and deteriorates when it reacts with moisture. It is sealed in a package and prevents deterioration by preventing moisture from entering. In a storage battery having such a configuration, a very small amount of gas is generated during charging, and therefore it is inevitable that the central portion of the sealed package swells by repeated charging and discharging. Therefore, it is necessary to secure a space that can absorb the deformation even when the thickness of the storage battery increases with charging. However, if such a space is secured, the electronic device becomes larger and the electronic device becomes thinner. Will be affected.

本発明の目的は、充電効率を上げることができ、充放電を繰り返すことによる蓄電源の変形を吸収することができ、さらに、薄型化を容易に図ることができる非接触充電式電子機器を提供することである。   An object of the present invention is to provide a non-contact rechargeable electronic device that can increase charging efficiency, can absorb deformation of a storage power source due to repeated charging and discharging, and can be easily reduced in thickness. It is to be.

本発明の非接触充電式電子機器は、筒状の外枠と、この外枠の一方の開口を塞ぐ裏蓋と、この裏蓋の内側に配置され、前記外枠の中心軸方向における厚さ寸法が当該中心軸と直交する方向の幅寸法よりも小さく、外部電源が備える１次コイルの電磁誘導によって発電する２次コイルと、前記外枠の中心軸方向における厚さ寸法が当該中心軸と直交する方向の幅寸法よりも小さい弾性部材と、前記外枠の中心軸方向における厚さ寸法が当該中心軸と直交する方向の幅寸法よりも小さく、前記２次コイルで発電される電力を蓄え、前記外枠の中心軸方向に厚さ寸法が増加する蓄電源とを備え、前記２次コイルと、前記弾性部材と、前記蓄電源とは、前記外枠の中心軸方向に、裏蓋の内側から順に積層されており、前記弾性部材は、前記蓄電源の厚さ寸法が増加した場合に、当該厚さ寸法の増加に応じて弾性変形可能に取り付けられるとともに、前記２次コイルを前記裏蓋側に付勢し、前記２次コイルは、前記弾性部材によって前記裏蓋に当接され、前記裏蓋において少なくとも前記２次コイルと対向する領域部は、非導電性材料で形成されていることを特徴とする。
ここで、弾性部材は、弾力性を有するクッション材であればよく、例えば、合成樹脂製またはゴム製のシート部材でもよく、金属製のバネでもよい。ただし、蓄電源と２次コイルとの絶縁性を考慮すると、絶縁性を有する合成樹脂製またはゴム製のシート部材で形成された方が好ましい。
また、２次コイルが少なくとも弾性部材によって裏蓋側に付勢されていればよく、例えば、弾性部材と２次コイルとの間に、磁性体からなる磁性部材や、絶縁性を有する絶縁部材などを配置して、これらの部材を介して２次コイルが付勢されるようにしてもよい。 The non-contact rechargeable electronic device of the present invention includes a cylindrical outer frame, a back cover that closes one opening of the outer frame, and a thickness in the central axis direction of the outer frame that is disposed inside the back cover. A secondary coil that generates power by electromagnetic induction of a primary coil provided in an external power supply, the dimension of which is smaller than a width dimension in a direction orthogonal to the central axis, and a thickness dimension in the central axis direction of the outer frame is the central axis The elastic member smaller than the width dimension in the orthogonal direction and the thickness dimension in the central axis direction of the outer frame are smaller than the width dimension in the direction orthogonal to the central axis, and stores the electric power generated by the secondary coil. A secondary battery, an elastic member, and the storage power source in the direction of the central axis of the outer frame. The elastic members are laminated in order from the inside, and the thickness of the accumulator When the dimension is increased, it is attached so as to be elastically deformable in accordance with the increase in the thickness dimension, and the secondary coil is urged toward the back cover side, and the secondary coil is A region portion which is in contact with the lid and faces at least the secondary coil in the back lid is formed of a non-conductive material.
Here, the elastic member may be a cushioning material having elasticity, for example, a synthetic resin or rubber sheet member, or a metal spring. However, when the insulation between the storage power source and the secondary coil is taken into consideration, it is preferable that the insulation power is formed of a synthetic resin or rubber sheet member.
Moreover, the secondary coil should just be urged | biased by the back cover side at least by the elastic member, for example, the magnetic member which consists of a magnetic body, the insulating member which has insulation, etc. between an elastic member and a secondary coil And the secondary coil may be urged through these members.

本発明によれば、裏蓋の内側に２次コイルが配置され、２次コイルに弾性部材が外枠の中心軸方向に積層され、弾性部材に蓄電源が外枠の中心軸方向に積層されているので、この弾性部材によって２次コイルが裏蓋側に付勢されるので、充電の際に、２次コイルを外部電源の１次コイルに接近させた状態を維持できる。このように、コイル同士の間隔が小さくなるように２次コイルの位置を維持できるので、１次コイルによる２次コイルの充電効率を上げることができる。これによって、充電時間を短くできて、急速充電が可能となり、充電を始めてから短時間で機器を使用することができ、また、消費される電力を削減できて省エネルギー化の観点からも有効である。なお、コイル同士の間隔をできるだけ小さくするため、２次コイルは弾性部材によって常時、裏蓋に当接した状態となっていることが好ましい。
また、蓄電源が充電に伴って膨張して、蓄電源が外枠の中心軸方向に延びた場合に、蓄電源の寸法の増加分を弾性部材が吸収することができる。このように蓄電源が膨張しても、蓄電源の寸法の増加分を逃がすための空間を特別に設ける必要がなくなるので、電子機器の薄型化に対応できる。 According to the present invention, the secondary coil is disposed inside the back cover, the elastic member is laminated on the secondary coil in the central axis direction of the outer frame, and the accumulator is laminated on the elastic member in the central axis direction of the outer frame. Therefore, since the secondary coil is urged toward the back cover by the elastic member, the state where the secondary coil is brought close to the primary coil of the external power source can be maintained during charging. Thus, since the position of a secondary coil can be maintained so that the space | interval of coils may become small, the charging efficiency of the secondary coil by a primary coil can be raised. As a result, the charging time can be shortened, rapid charging becomes possible, the device can be used in a short time after starting charging, and the consumed power can be reduced, which is also effective from the viewpoint of energy saving. . In order to make the distance between the coils as small as possible, it is preferable that the secondary coil is always in contact with the back cover by an elastic member.
Further, when the storage power supply expands with charging and the storage power supply extends in the central axis direction of the outer frame, the elastic member can absorb the increase in the dimension of the storage power supply. Even if the storage power supply expands in this way, it is not necessary to provide a special space for escaping the increase in the size of the storage power supply, so that the electronic device can be made thinner.

本発明の非接触充電式電子機器では、前記２次コイルの前記蓄電源側には、磁性体で形成される磁性部材が配置され、前記弾性部材は、前記磁性部材と前記蓄電源との間に配置されていることが好ましい。
本発明によれば、２次コイルの蓄電源側に磁性部材が配置されているので、１次コイルに電圧を加えた際に生じる磁束が、２次コイルの蓄電源側において磁性部材により捕捉されるので、磁束の漏れを防止することができ、２次コイルと鎖交する磁束の密度を高くすることができ、充電効率を向上させることができる。 In the non-contact rechargeable electronic device of the present invention, a magnetic member formed of a magnetic material is disposed on the storage power source side of the secondary coil, and the elastic member is disposed between the magnetic member and the storage power source. It is preferable to arrange | position.
According to the present invention, since the magnetic member is disposed on the storage power source side of the secondary coil, the magnetic flux generated when a voltage is applied to the primary coil is captured by the magnetic member on the storage power source side of the secondary coil. Therefore, leakage of magnetic flux can be prevented, the density of magnetic flux interlinking with the secondary coil can be increased, and charging efficiency can be improved.

本発明の非接触充電式電子機器では、前記裏蓋の内側には、前記２次コイルと、前記蓄電源の過充電を防止するための充電保護回路とが実装された充電用回路基板が配置され、前記弾性部材は、前記充電用回路基板と前記蓄電源との間に配置され、前記充電用回路基板を前記裏蓋側に付勢していることが好ましい。   In the non-contact rechargeable electronic device of the present invention, a charging circuit board on which the secondary coil and a charge protection circuit for preventing overcharge of the accumulator are mounted is disposed inside the back cover. Preferably, the elastic member is disposed between the charging circuit board and the accumulator, and biases the charging circuit board toward the back cover.

ここで、充電保護回路として、例えば、電磁誘導により発電した電力を蓄電源に伝送する時に、過充電を防止し、または、充電に伴う過度な発熱を防止することによって蓄電源を保護する回路を採用することができる。
本発明によれば、充電用回路基板に充電保護回路が実装されているので、過充電を防止したり、充電に伴う過度な発熱を防止したりすることができる。また、充電保護回路と２次コイルとを個別に取り付ける場合と比べて、同じ充電用回路基板上に２次コイルが実装されていることで、部品点数が少なくなり、取り付け作業を容易に実施できる。 Here, as a charge protection circuit, for example, when transmitting electric power generated by electromagnetic induction to a storage power source, a circuit that protects the storage power source by preventing overcharging or preventing excessive heat generation associated with charging. Can be adopted.
According to the present invention, since the charge protection circuit is mounted on the charging circuit board, it is possible to prevent overcharging or excessive heat generation associated with charging. In addition, as compared with the case where the charge protection circuit and the secondary coil are individually attached, the number of components is reduced because the secondary coil is mounted on the same circuit board for charging, and the attachment work can be easily performed. .

本発明の非接触充電式電子機器では、前記充電用回路基板には、前記２次コイルの収納用の孔が形成されていることが好ましい。
本発明によれば、２次コイルが充電用回路基板の孔に配置されているので、２次コイルを含めた基板の厚さ方向の寸法を小さくすることができ、電子機器の薄型化に容易に対応することができる。なお、少なくとも２次コイルの一部が孔の内部に配置されていればよく、２次コイルの一部が開口部から蓄電源側に突出して配置されていてもよい。 In the non-contact rechargeable electronic device of the present invention, it is preferable that a hole for accommodating the secondary coil is formed in the charging circuit board.
According to the present invention, since the secondary coil is disposed in the hole of the charging circuit board, the dimension in the thickness direction of the board including the secondary coil can be reduced, and the electronic device can be easily thinned. It can correspond to. It is sufficient that at least a part of the secondary coil is disposed inside the hole, and a part of the secondary coil may be disposed so as to protrude from the opening toward the storage power source.

本発明の非接触充電式電子機器では、前記外枠の中心軸と直交する方向における前記２次コイルの位置ずれを規制する規制部を備えていることが好ましい。
ここで、規制部としては、２次コイルの位置ずれを直接的に規制するものでもよく、あるいは、２次コイルを固定する磁性部材または充電用回路基板などを介して２次コイルの位置ずれを間接的に規制するものでもよい。また、規制部としては、例えば、裏蓋に形成された突出部でもよく、この突出部を２次コイルに係合させることによって、２次コイルの位置ずれを規制してもよい。また、外枠の内部に延設された延設部でもよく、この延設部を２次コイルに当接させることによって、２次コイルの位置ずれを規制してもよい。あるいは、外枠の内側に機枠が配置されている場合であれば、規制部としては、機枠に形成された突出部または延設部でもよい。
１次コイルおよび２次コイルの各中心軸同士のずれが大きいと、充電効率が低下してしまうという問題点があるが、本発明によれば、規制部が、外枠の中心軸と直交する方向における２次コイルの位置ずれを規制するので、２次コイルの中心軸と、１次コイルの中心軸とのずれを生じにくくすることができ、充電効率を向上させることができる。 In the non-contact rechargeable electronic device of the present invention, it is preferable to include a restricting portion that restricts the displacement of the secondary coil in a direction orthogonal to the central axis of the outer frame.
Here, the regulating portion may be one that directly regulates the displacement of the secondary coil, or the displacement of the secondary coil via a magnetic member that fixes the secondary coil or a charging circuit board. It may be regulated indirectly. Moreover, as a control part, the protrusion part formed in the back cover may be sufficient, for example, you may control the position shift of a secondary coil by engaging this protrusion part with a secondary coil. Moreover, the extension part extended in the inside of an outer frame may be sufficient, and you may regulate the position shift of a secondary coil by making this extension part contact | abut to a secondary coil. Alternatively, if the machine frame is arranged inside the outer frame, the restricting portion may be a protruding portion or an extended portion formed on the machine frame.
Although there is a problem that charging efficiency is reduced when the deviation between the central axes of the primary coil and the secondary coil is large, according to the present invention, the regulating portion is orthogonal to the central axis of the outer frame. Since the positional deviation of the secondary coil in the direction is restricted, it is possible to make it difficult for the central axis of the secondary coil to deviate from the central axis of the primary coil, and to improve the charging efficiency.

本発明の非接触充電式電子機器では、前記規制部は、前記裏蓋に形成され、前記２次コイルの空芯部と係合する突起部であることが好ましい。
本発明によれば、規制部としての裏蓋の突起部が２次コイルの空芯部と係合することで、外枠の中心軸と直交する方向における２次コイルの位置ずれが規制される。例えば、２次コイルを磁性部材のような別部材に固定させて、この別部材の位置ずれを規制部によって規制する場合と比べて、２次コイルの位置ずれを直接、突起部によって規制するので、２次コイルの位置ずれを確実に規制できる。従って、２次コイルの位置をより精度よく確定でき、２次コイルの中心軸と１次コイルの中心軸とのずれを一層抑えることができる。
ここで、突起部は、磁性材料で形成されていることが好適である。磁性部材は、高透磁率の材料（磁性体）からなり、例えば、鉄、ケイ素鋼、パーマロイ、フェライト等から形成されている。このような磁性部材によって突起部が形成されると、２次コイルの空芯部内に磁性部材が配置されて、１次コイルに電圧が印加されると発生する磁束が捕捉され、漏洩磁束を減少させることができる。 In the non-contact rechargeable electronic device according to the aspect of the invention, it is preferable that the restriction portion is a protrusion formed on the back cover and engaged with the air core portion of the secondary coil.
According to the present invention, the protrusion of the back cover as the restricting portion is engaged with the air core portion of the secondary coil, so that the positional deviation of the secondary coil in the direction orthogonal to the central axis of the outer frame is restricted. . For example, as compared with the case where the secondary coil is fixed to another member such as a magnetic member and the positional deviation of this separate member is regulated by the regulating part, the positional deviation of the secondary coil is regulated directly by the protrusion. The positional deviation of the secondary coil can be reliably regulated. Therefore, the position of the secondary coil can be determined with higher accuracy, and the deviation between the central axis of the secondary coil and the central axis of the primary coil can be further suppressed.
Here, the protrusion is preferably made of a magnetic material. The magnetic member is made of a material with high magnetic permeability (magnetic material), and is made of, for example, iron, silicon steel, permalloy, ferrite, or the like. When the protrusion is formed by such a magnetic member, the magnetic member is arranged in the air core portion of the secondary coil, and the magnetic flux generated when a voltage is applied to the primary coil is captured and the leakage magnetic flux is reduced. Can be made.

本発明の非接触充電式電子機器では、前記２次コイルは、基体の表面に導体の箔部が形成されたコイル形成基板から前記箔部をエッチングによって成形された渦巻き線状の平面コイルであり、前記弾性部材は、前記コイル形成基板と前記蓄電源との間に配置されていることが好ましい。
本発明によれば、２次コイルがコイル形成基板の基体表面に形成された導体の箔部をエッチングによって成形された渦巻き線状の平面コイルであるので、２次コイルをより薄く成形することができ、２次コイルの配置に必要な空間を小さくすることができ、電子機器の薄型化をさらに図ることができる。 In the non-contact rechargeable electronic device of the present invention, the secondary coil is a spiral planar coil formed by etching the foil portion from a coil forming substrate having a conductor foil portion formed on the surface of a base. The elastic member is preferably disposed between the coil forming substrate and the accumulator.
According to the present invention, since the secondary coil is a spiral planar coil formed by etching the foil portion of the conductor formed on the substrate surface of the coil forming substrate, the secondary coil can be formed thinner. In addition, the space necessary for the arrangement of the secondary coil can be reduced, and the electronic device can be further reduced in thickness.

本発明の非接触充電式電子機器では、前記外枠の中心軸と直交する方向における前記コイル形成基板の位置ずれを規制する規制部を備え、この規制部は、前記外枠または前記裏蓋に形成されるとともに、前記コイル形成基板に形成された穴に係合される突状部または前記コイル形成基板の側部と当接する延設部であることが好ましい。
本発明によれば、規制部によって、コイル形成基板に一体形成された２次コイルの位置ずれが規制されるので、２次コイルを磁性部材や充電用回路基板のような別部材に取り付けた場合と比べて、２次コイルの中心軸と１次コイルの中心軸とのずれを一層小さくすることができる。 In the non-contact rechargeable electronic device of the present invention, it is provided with a restricting portion that restricts a positional deviation of the coil forming substrate in a direction orthogonal to the central axis of the outer frame, and the restricting portion is provided on the outer frame or the back cover. It is preferable that it is a projecting portion that is formed and engaged with a hole formed in the coil forming substrate or an extending portion that contacts a side portion of the coil forming substrate.
According to the present invention, since the displacement of the secondary coil integrally formed on the coil forming substrate is restricted by the restricting portion, the secondary coil is attached to another member such as a magnetic member or a charging circuit substrate. Compared with, it is possible to further reduce the deviation between the central axis of the secondary coil and the central axis of the primary coil.

本発明の非接触充電式電子機器では、前記裏蓋は、外枠の内部に向かって窪んで湾曲され、前記蓄電源は、外枠の中心軸方向に直交する方向に、弾性変形可能に形成され、前記２次コイルおよび前記蓄電源は、前記裏蓋の形状に沿って変形可能に形成されていることが好ましい。
本発明によれば、裏蓋が外枠の内部に向かって窪んで湾曲されているので、電子機器を腕や脚などの身体に装着する場合に、身体の形状になじむことができ、身体への装着性を向上させることができる。また、裏蓋が外枠の内部に向かって窪んで湾曲されることで、外枠内部における中心軸方向の寸法が小さくなる場合、蓄電源が外枠の中心軸方向に直交する方向に弾性変形し、蓄電源の中心軸方向の寸法が小さくなるので、外枠内部に２次コイル、弾性部材、蓄電源を配置することができる。また、裏蓋の湾曲した形状に沿って、２次コイルおよび蓄電源を変形させれば、２次コイル、弾性部材、蓄電源を外枠内部に効率よく配置させることができる。 In the non-contact rechargeable electronic device of the present invention, the back cover is recessed and curved toward the inside of the outer frame, and the storage power source is formed to be elastically deformable in a direction orthogonal to the central axis direction of the outer frame. The secondary coil and the accumulator are preferably formed to be deformable along the shape of the back cover.
According to the present invention, since the back cover is recessed and curved toward the inside of the outer frame, when the electronic device is worn on a body such as an arm or a leg, it can be adapted to the shape of the body. Wearability can be improved. In addition, when the back cover is recessed and curved toward the inside of the outer frame, when the dimension in the central axis direction inside the outer frame becomes small, the accumulator is elastically deformed in a direction perpendicular to the central axis direction of the outer frame. And since the dimension of the center axis direction of a storage power supply becomes small, a secondary coil, an elastic member, and a storage power supply can be arrange | positioned inside an outer frame. Further, if the secondary coil and the accumulator are deformed along the curved shape of the back cover, the secondary coil, the elastic member, and the accumulator can be efficiently arranged inside the outer frame.

前述のように本発明の非接触充電式電子機器によれば、充電効率を上げることができ、充電を繰り返すことによる蓄電源の変形を吸収することができ、さらに、薄型化を容易に図ることができるという効果がある。   As described above, according to the non-contact rechargeable electronic device of the present invention, the charging efficiency can be increased, the deformation of the storage power source due to repeated charging can be absorbed, and the thickness can be easily reduced. There is an effect that can be.

以下、本発明の第１実施形態を図面に基づいて説明する。
なお、後述する第２実施形態以降において、以下に説明する第１実施形態での構成部材と同じ構成部材および同様な機能を有する構成部材には同一符号を付し、説明を簡単にあるいは省略する。 DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a first embodiment of the invention will be described with reference to the drawings.
In the second and later embodiments described later, the same reference numerals are given to the same components and the same members as the components in the first embodiment described below, and the description will be simplified or omitted. .

［第１実施形態］
図１および図２は、本実施形態の非接触充電式電子機器（以下、電子機器と示す。）１を示す正面図および縦断面図である。
電子機器１は、例えば、測定した脈拍を表示可能な脈拍計や腕時計などのように、腕や脚などの身体に装着して使用する携帯型電子機器として構成されている。具体的には、図１および図２に示すように、筒状の外枠２と、この外枠２の一方の開口を塞ぐカバーガラス３と、他方の開口を塞ぐ裏蓋４とを備えて構成され、表示情報を表示する表示装置５や、電源部８などを内蔵している。
外枠２は、装着用のベルト３０が接続される長辺側の一対の長辺外枠部２１と、短辺側の一対の短辺外枠部２２とを有し、中心軸Ａ方向の断面形状が全体矩形に形成されている。この外枠２に対してカバーガラス３を固着させ、かつ、外枠２と裏蓋４との間にシール部材２０を介在させることによって、電子機器１の内部の気密性と防水性とが維持されている。裏蓋４は、例えば合成樹脂やセラミックス等の非導電性材料で形成されている。 [First Embodiment]
FIG. 1 and FIG. 2 are a front view and a longitudinal sectional view showing a non-contact rechargeable electronic device (hereinafter, referred to as an electronic device) 1 of the present embodiment.
The electronic device 1 is configured as a portable electronic device that is used by being worn on a body such as an arm or a leg, such as a pulse meter or a wristwatch that can display a measured pulse. Specifically, as shown in FIGS. 1 and 2, a cylindrical outer frame 2, a cover glass 3 that closes one opening of the outer frame 2, and a back cover 4 that closes the other opening are provided. It has a built-in display device 5 for displaying display information, a power supply unit 8 and the like.
The outer frame 2 has a pair of long-side outer frame portions 21 on the long side to which the belt 30 for attachment is connected, and a pair of short-side outer frame portions 22 on the short side, and is arranged in the direction of the central axis A. The cross-sectional shape is formed in the whole rectangle. By fixing the cover glass 3 to the outer frame 2 and interposing the seal member 20 between the outer frame 2 and the back cover 4, the airtightness and waterproofness inside the electronic device 1 are maintained. Has been. The back cover 4 is made of a nonconductive material such as synthetic resin or ceramics.

電子機器１の内部には、図２に示すように、表示装置５と、この表示装置５の駆動制御手段であり回路素子６Ａが実装された回路基板６と、回路基板６と裏蓋４との間に配置され回路基板６を支持している機枠７と、この機枠７内に配置され表示装置５および回路基板６に電力を供給する電源部８とが、カバーガラス３と裏蓋４との間に並設されている。表示装置５としては、液晶表示パネル、有機ＥＬパネルなど、薄型軽量の表示パネルであることが好ましい。このように構成された電子機器１では、回路基板６が表示装置５を駆動制御して、表示装置５に表示情報が表示されるので、カバーガラス３越しに表示情報を視認することができる。   As shown in FIG. 2, the electronic device 1 includes a display device 5, a circuit board 6 on which a circuit element 6 </ b> A that is a drive control unit of the display device 5 is mounted, a circuit board 6, and a back cover 4. A machine frame 7 that is disposed between the machine frame 7 and supports the circuit board 6, and a power supply unit 8 that is disposed in the machine frame 7 and supplies power to the display device 5 and the circuit board 6. 4 in parallel. The display device 5 is preferably a thin and light display panel such as a liquid crystal display panel or an organic EL panel. In the electronic apparatus 1 configured as described above, the circuit board 6 drives and controls the display device 5 and the display information is displayed on the display device 5, so that the display information can be visually recognized through the cover glass 3.

以下、電源部８について、図２に基づいて詳しく説明する。
電源部８は、機枠７に支持されており、蓄電源としての充放電可能な蓄電池１１と、弾性部材１２と、磁性部材１３と、２次コイル１４とを有して構成されている。蓄電池１１、弾性部材１２、磁性部材１３および２次コイル１４は、外枠２の中心軸Ａ方向における各厚さ寸法が、当該中心軸Ａと直交する方向の各幅寸法よりも、それぞれ小さく形成されている。また、蓄電池１１、弾性部材１２、磁性部材１３および２次コイル１４は、外枠２の中心軸Ａ方向に、回路基板６から裏蓋４側に向かって、順に積層されている。 Hereinafter, the power supply unit 8 will be described in detail with reference to FIG.
The power supply unit 8 is supported by the machine casing 7 and includes a rechargeable storage battery 11 serving as a storage power supply, an elastic member 12, a magnetic member 13, and a secondary coil 14. The storage battery 11, the elastic member 12, the magnetic member 13, and the secondary coil 14 are formed so that each thickness dimension in the direction of the central axis A of the outer frame 2 is smaller than each width dimension in the direction orthogonal to the central axis A. Has been. In addition, the storage battery 11, the elastic member 12, the magnetic member 13, and the secondary coil 14 are sequentially stacked in the direction of the central axis A of the outer frame 2 from the circuit board 6 toward the back cover 4.

機枠７は、その外周部分が外枠２の内周面と当接した状態で、外枠２の内側に配置されている。機枠の内部には、蓄電池１１が配置されている。機枠７は、厚さ方向（図中の上下方向）において、上面が回路基板６と当接し、下面が裏蓋４と当接する。このように、機枠７は、それ自体が厚さ方向に直交する方向（図中の左右方向）に位置ずれしないように設置されるとともに、厚さ方向、すなわち外枠の中心軸Ａ（図中の上下方向）においては、上側の表示装置５および回路基板６が厚さ方向に位置ずれしないように設置された部材である。
機枠７には、第１の孔７１と第２の孔７２とが形成され、第１の孔７１が機枠７の上面に開口し、第２の孔７２が機枠７の下面に開口し、２つの孔７１，７２は互いに連通している。第１の孔７１には、蓄電池１１が配置されている。
第２の孔７２は、機枠７の裏蓋４寄りの部分に、機枠７の中心軸に向かって延設された延設部７２Ａによって形成されており、第２の孔７２側の開口面積は、第１の孔７１側の開口面積よりも小さくなっている。この第２の孔７２には、磁性部材１３が配置され、第２の孔７２の内面が磁性部材１３の外面と当接している。なお、磁性部材１３の全体が、第２の孔７２内に配置されている訳ではなく、磁性部材１３の上側部分は、第１の孔７１内に突出している。 The machine frame 7 is disposed on the inner side of the outer frame 2 with its outer peripheral portion in contact with the inner peripheral surface of the outer frame 2. A storage battery 11 is arranged inside the machine frame. The machine frame 7 has an upper surface in contact with the circuit board 6 and a lower surface in contact with the back cover 4 in the thickness direction (vertical direction in the drawing). Thus, the machine frame 7 is installed so as not to be displaced in the direction orthogonal to the thickness direction (the left-right direction in the figure) itself, and in the thickness direction, that is, the center axis A of the outer frame (see FIG. The upper display device 5 and the circuit board 6 are members installed so as not to be displaced in the thickness direction.
A first hole 71 and a second hole 72 are formed in the machine frame 7, the first hole 71 opens on the upper surface of the machine frame 7, and the second hole 72 opens on the lower surface of the machine frame 7. The two holes 71 and 72 communicate with each other. The storage battery 11 is disposed in the first hole 71.
The second hole 72 is formed in the portion of the machine frame 7 near the back cover 4 by an extending portion 72A that extends toward the central axis of the machine frame 7, and is open on the second hole 72 side. The area is smaller than the opening area on the first hole 71 side. The magnetic member 13 is disposed in the second hole 72, and the inner surface of the second hole 72 is in contact with the outer surface of the magnetic member 13. Note that the entire magnetic member 13 is not disposed in the second hole 72, and the upper portion of the magnetic member 13 protrudes into the first hole 71.

蓄電池１１は、水を含まない溶媒を備える非水型の蓄電池であり、例えば、リチウム系イオン蓄電池が用いられている。この蓄電池１１には、電解液の主溶媒として有機溶媒を備えることによって、重量当りのエネルギー密度が大きく、必要な充電容量に対する電池の体積を小さくすることができ、また、繰り返し充放電しても充電容量の劣化が小さく、充電電流が大きいといった特徴がある。
蓄電池１１は、複数の板状のセルが袋状の電池容器の中に密封される構造をなし、全体として扁平状に形成されている。各セルの構成は、一般的な構成であり、例えば、セパレータを挟んで、箔状の正負電極をループ状に交互に重畳して構成されていてもよく、短冊状の正負電極を交互に重畳して構成されていてもよい。このような蓄電池１１では、充電時にガスが発生するので、充放電を繰り返すと、電池容器内に発生したガスが充満し、電池容器が膨張するので、蓄電池１１の中央部が凸状となる。蓄電池１１は、一度膨張すると、発生したガスによって再び収縮することができない構造となっている。
このような構成の蓄電池１１は、第１の孔７１に配置されているが、機枠７に対して固定されてはおらず、蓄電池１１を充電した際に、蓄電池１１が第１の孔７１内で膨張できるようになっている。蓄電池１１が膨張した際、外枠２の中心軸Ａ方向に蓄電池１１の厚み方向の寸法が増加するが、この増加分だけ弾性部材１２が弾性変形するように構成されている。このように蓄電池１１の寸法の増加分が第１の孔７１内で吸収されるようになっている。 The storage battery 11 is a non-aqueous storage battery including a solvent that does not contain water, and, for example, a lithium ion storage battery is used. By providing the storage battery 11 with an organic solvent as the main solvent of the electrolytic solution, the energy density per weight is large, the volume of the battery with respect to the required charge capacity can be reduced, and even when repeatedly charged and discharged There are features such that the deterioration of the charging capacity is small and the charging current is large.
The storage battery 11 has a structure in which a plurality of plate-like cells are sealed in a bag-like battery container, and is formed in a flat shape as a whole. The configuration of each cell is a general configuration. For example, foil-like positive and negative electrodes may be alternately overlapped in a loop shape with a separator interposed therebetween, and strip-like positive and negative electrodes are alternately overlapped. It may be configured as. In such a storage battery 11, gas is generated at the time of charging. Therefore, when charging and discharging are repeated, the gas generated in the battery container is filled and the battery container expands, so that the central portion of the storage battery 11 becomes convex. The storage battery 11 has a structure that, once expanded, cannot be contracted again by the generated gas.
The storage battery 11 having such a configuration is disposed in the first hole 71, but is not fixed to the machine casing 7, and when the storage battery 11 is charged, the storage battery 11 is in the first hole 71. It can be expanded with. When the storage battery 11 expands, the dimension in the thickness direction of the storage battery 11 increases in the direction of the central axis A of the outer frame 2. The elastic member 12 is configured to be elastically deformed by this increase. In this way, an increase in the size of the storage battery 11 is absorbed in the first hole 71.

２次コイル１４は、ウレメット線材等の導線が外枠２の中心軸Ａ方向に螺旋状に巻かれた導線部１４２を有する扁平型コイルであり、中心軸Ａ方向に貫通する空芯部１４１を有している。２次コイル１４は、磁性部材１３に貼り付けられた状態で、裏蓋４の内側に配置されている。２次コイル１４の正極側および負極側の各端子は、蓄電池１１の正極側および負極側の各端子とそれぞれ接続されている。導線部１４２の外周には、導線間の短絡および断線を防止するために絶縁処理が施されている。この絶縁処理によって、導線部１４２が裏蓋４の内面と直に接触しても短絡等の電気的トラブルを回避できるようになっている。
弾性部材１２は、例えば、ゴムや合成樹脂のような絶縁性を有する材料によって、シート状に形成されている。このような弾性部材１２は、蓄電池１１と磁性部材１３とによって厚さ方向に圧縮された状態で配置され、磁性部材１３が蓄電池１１から離れる方向に、すなわち裏蓋４に向かって磁性部材１３を付勢している。 The secondary coil 14 is a flat type coil having a conducting wire portion 142 in which a conducting wire such as a uremet wire is spirally wound in the direction of the central axis A of the outer frame 2, and an air core portion 141 penetrating in the direction of the central axis A. Have. The secondary coil 14 is disposed on the inner side of the back cover 4 while being affixed to the magnetic member 13. Each terminal on the positive electrode side and the negative electrode side of the secondary coil 14 is connected to each terminal on the positive electrode side and the negative electrode side of the storage battery 11. Insulation treatment is applied to the outer periphery of the conductor portion 142 in order to prevent a short circuit and disconnection between the conductors. By this insulation treatment, electrical troubles such as a short circuit can be avoided even if the conductor portion 142 is in direct contact with the inner surface of the back cover 4.
The elastic member 12 is formed in a sheet shape from an insulating material such as rubber or synthetic resin. Such an elastic member 12 is arranged in a state where it is compressed in the thickness direction by the storage battery 11 and the magnetic member 13, and the magnetic member 13 is moved away from the storage battery 11, that is, toward the back cover 4. Energized.

磁性部材１３は、高透磁率の材料（磁性体）からなり、例えば、鉄、ケイ素鋼、パーマロイ、フェライト等から形成されている。磁性部材１３の裏蓋４側には、２次コイル１４が接着剤などで貼り合わされている。このように、磁性部材１３は、２次コイル１４の蓄電池１１側に配置されることで、１次コイル９３に電圧が印加されると発生する磁束を捕捉し、漏洩磁束を減少させることができる。
このような構成の磁性部材１３は、第２の孔７２に配置されているので、機枠７の延設部７２Ａによって、厚さ方向（外枠２の中心軸Ａ方向）に直交する方向における位置ずれが規制されている。本実施形態では、この延設部７２Ａが本発明の規制部を構成し、延設部７２Ａによって磁性部材１３に固定された２次コイル１４の位置ずれが規制される。なお、磁性部材１３は、第２の孔７２に挿入されているが、蓄電池１１と同様に、機枠７に対して固定されてはおらず、磁性部材１３が弾性部材１２から裏蓋４側への付勢力を受けた際、磁性部材１３が第２の孔７２内を移動できるようになっている。このようにして、磁性部材１３に固定された２次コイル１４は、弾性部材１２によって、常時、裏蓋４側に付勢され、裏蓋４に当接されている。 The magnetic member 13 is made of a material having high magnetic permeability (magnetic material), and is made of, for example, iron, silicon steel, permalloy, ferrite, or the like. A secondary coil 14 is bonded to the back cover 4 side of the magnetic member 13 with an adhesive or the like. As described above, the magnetic member 13 is arranged on the storage battery 11 side of the secondary coil 14, thereby capturing the magnetic flux generated when a voltage is applied to the primary coil 93 and reducing the leakage magnetic flux. .
Since the magnetic member 13 having such a configuration is disposed in the second hole 72, the extending portion 72 </ b> A of the machine frame 7 in the direction orthogonal to the thickness direction (the direction of the central axis A of the outer frame 2). Misalignment is regulated. In the present embodiment, the extended portion 72A constitutes a restricting portion of the present invention, and the displacement of the secondary coil 14 fixed to the magnetic member 13 is restricted by the extended portion 72A. Although the magnetic member 13 is inserted into the second hole 72, as with the storage battery 11, it is not fixed to the machine casing 7, and the magnetic member 13 moves from the elastic member 12 to the back cover 4 side. When the urging force is received, the magnetic member 13 can move in the second hole 72. Thus, the secondary coil 14 fixed to the magnetic member 13 is always urged toward the back cover 4 by the elastic member 12 and is in contact with the back cover 4.

次に、外部電源としての充電器９について図面に基づいて説明する。
図３は、電子機器１と充電器９とを組み合わせた状態を示す縦断面図である。充電器９は、図３に示すように、電子機器１を嵌め込むことができる電子機器挿入部９１Ａを有した受け台９１を備えて構成され、電子機器挿入部９１Ａの底面には、１次コイル９３と磁性部材９２とが配置される凹部９１Ｂが形成されている。１次コイル９３は、２次コイル１４と略同じ構成であり、磁性部材９２の表面に接着剤などで貼り付けられている。１次コイル９３は、電子機器１が電子機器挿入部９１Ａに嵌め込まれた状態で、磁性部材９２の表面、すなわち磁性部材９２の裏蓋４側に配置され、１次コイル９３が電子機器１の２次コイル１４と近接するようになっている。磁性部材９２を配置することによって、２次コイル１４が固定される磁性部材１３と同様に、磁束の漏れが抑制され、充電効率を向上させることができる。 Next, the charger 9 as an external power source will be described with reference to the drawings.
FIG. 3 is a longitudinal sectional view showing a state where the electronic device 1 and the charger 9 are combined. As shown in FIG. 3, the charger 9 includes a cradle 91 having an electronic device insertion portion 91A into which the electronic device 1 can be fitted. A recess 91 </ b> B is formed in which the coil 93 and the magnetic member 92 are disposed. The primary coil 93 has substantially the same configuration as the secondary coil 14 and is attached to the surface of the magnetic member 92 with an adhesive or the like. The primary coil 93 is disposed on the surface of the magnetic member 92, that is, on the back cover 4 side of the magnetic member 92 in a state where the electronic device 1 is fitted in the electronic device insertion portion 91 </ b> A. It comes close to the secondary coil 14. By disposing the magnetic member 92, similarly to the magnetic member 13 to which the secondary coil 14 is fixed, leakage of magnetic flux is suppressed, and charging efficiency can be improved.

電子機器挿入部９１Ａは、電子機器１が挿入された状態で、電子機器１が幅方向にずれることなく、受け台９１に対して定位置となるように形成されている。また、磁性部材９２が配置される凹部９１Ｂは、受け台９１に対して精度良く位置決めされている。このようにして、電子機器１の２次コイル１４に対して、磁性部材９２に固定される１次コイル９３の幅方向の位置関係のずれが抑えられており、充電効率を向上させることができる。
なお、１次コイル９３は、電子機器１が嵌め込まれた状態で、裏蓋４と当接して表面の皮膜などが損傷しないように、裏蓋４との間には微小な隙間が形成されている。あるいは、１次コイル９３を磁性部材９２とともに樹脂などで覆い、樹脂の表面が裏蓋４と当接するようにしてもよく、１次コイル９３の保護と、１次コイル９３と２次コイル１４との間隔をできるだけ接近させる点において有効な手段である。 The electronic device insertion portion 91 </ b> A is formed to be in a fixed position with respect to the cradle 91 without the electronic device 1 being displaced in the width direction in a state where the electronic device 1 is inserted. Further, the recess 91 </ b> B in which the magnetic member 92 is disposed is accurately positioned with respect to the cradle 91. In this way, the displacement of the positional relationship in the width direction of the primary coil 93 fixed to the magnetic member 92 with respect to the secondary coil 14 of the electronic device 1 is suppressed, and charging efficiency can be improved. .
The primary coil 93 is in a state where a minute gap is formed between the primary coil 93 and the back cover 4 so as not to contact the back cover 4 and damage the coating on the surface when the electronic device 1 is fitted. Yes. Alternatively, the primary coil 93 may be covered with the magnetic member 92 with resin or the like so that the surface of the resin contacts the back cover 4, protection of the primary coil 93, and the primary coil 93 and the secondary coil 14. This is an effective means in that the distance between the two is as close as possible.

以上のような構成において、２次コイル１４は、弾性部材１２によって裏蓋４に向かって付勢され、裏蓋４と当接しているため、１次コイル９３との距離を裏蓋４の厚み分とすることができ、１次コイル９３と２次コイル１４との間隔が小さくなっている。
また、２次コイル１４と裏蓋４との間に空間、または別部材が介在する場合は、２次コイル１４の取り付け位置のバラツキ、または介在する別部材の厚さ寸法のバラツキによって、コイル同士の間隔にバラツキが生じてしまう。これに対して、本実施形態では、２次コイル１４が裏蓋４に対して弾性部材１２によって常に付勢されているので、コイル同士の間隔のバラツキを小さくすることができ、充電効率を向上させることができる。 In the configuration as described above, the secondary coil 14 is urged toward the back cover 4 by the elastic member 12 and is in contact with the back cover 4, so that the distance from the primary coil 93 is the thickness of the back cover 4. The distance between the primary coil 93 and the secondary coil 14 is small.
In addition, when a space or another member is interposed between the secondary coil 14 and the back cover 4, the coils are separated by the variation in the mounting position of the secondary coil 14 or the variation in the thickness of the other member interposed. Variations will occur in the interval. On the other hand, in this embodiment, since the secondary coil 14 is always urged by the elastic member 12 with respect to the back cover 4, the variation in the space between the coils can be reduced, and the charging efficiency is improved. Can be made.

電子機器１を充電する際には、図３に示すように、電子機器１を充電器９にセットして、充電器９の１次コイル９３に所定時間電圧を印加させればよい。このようにすれば、１次コイル９３の周辺に磁束が発生し、発生した磁束が２次コイル１４と鎖交することで、電磁誘導による電流が２次コイル１４に流れる。発生する２次コイル１４の電流は、蓄電池１１に蓄えられる。このようにして、充電器９によって外部から機械的接点を介さないで蓄電池１１を充電することができる。   When charging the electronic device 1, as shown in FIG. 3, the electronic device 1 may be set in the charger 9 and a voltage may be applied to the primary coil 93 of the charger 9 for a predetermined time. In this way, a magnetic flux is generated around the primary coil 93, and the generated magnetic flux is linked to the secondary coil 14, whereby a current due to electromagnetic induction flows through the secondary coil 14. The generated current of the secondary coil 14 is stored in the storage battery 11. In this way, the storage battery 11 can be charged by the charger 9 from the outside without using a mechanical contact.

本実施形態によれば、次のような効果を奏することができる。
（１）２次コイル１４と蓄電池１１との間に弾性部材１２を介在して配置させ、弾性部材１２によって２次コイル１４が裏蓋４側に付勢されるので、２次コイル１４が裏蓋４と当接して、２次コイル１４と１次コイル９３との間隔を小さくすることができ、充電効率を上げることができる。 According to this embodiment, the following effects can be achieved.
(1) Since the elastic member 12 is interposed between the secondary coil 14 and the storage battery 11 and the secondary coil 14 is urged toward the back cover 4 by the elastic member 12, the secondary coil 14 is By abutting against the lid 4, the interval between the secondary coil 14 and the primary coil 93 can be reduced, and charging efficiency can be increased.

（２）弾性部材１２によって２次コイル１４が裏蓋４側に常に付勢されて、２次コイル１４の位置が固定されるので、２次コイル１４と１次コイル９３との間隔寸法のばらつきを抑えることができ、充電効率を上げることができる。 (2) Since the secondary coil 14 is always urged to the back cover 4 side by the elastic member 12 and the position of the secondary coil 14 is fixed, variation in the distance between the secondary coil 14 and the primary coil 93 varies. And charging efficiency can be increased.

（３）蓄電池１１と弾性部材１２とが電子機器１の厚さ方向に並設されているので、蓄電池１１が充電に伴って膨張しても、蓄電池１１の寸法の増加分を弾性部材１２が吸収できる。従って、蓄電池１１の寸法の増加分を逃がすための空間を特別に設ける必要がなく、 機器の薄型化に対応できる。 (3) Since the storage battery 11 and the elastic member 12 are juxtaposed in the thickness direction of the electronic device 1, even if the storage battery 11 expands due to charging, the elastic member 12 increases the size of the storage battery 11. Can absorb. Therefore, it is not necessary to provide a special space for escaping the increase in the size of the storage battery 11, and the device can be made thinner.

（４）蓄電池１１とは反対側の１次コイル９３の端部、および、２次コイル１４の蓄電池１１側の端部にそれぞれ磁性部材９２，１３が当接して配置されているので、１次コイル９３に電圧を加えた際に生じる磁束が、１次コイル９３の蓄電池１１とは反対側の端部と、２次コイル１４の蓄電池１１側の端部において磁性部材９２，１３により捕捉されるので、２次コイル１４と鎖交する磁束の密度が高まり、充電効率を向上できる。 (4) Since the magnetic members 92 and 13 are disposed in contact with the end of the primary coil 93 opposite to the storage battery 11 and the end of the secondary coil 14 on the storage battery 11 side, respectively. Magnetic flux generated when a voltage is applied to the coil 93 is captured by the magnetic members 92 and 13 at the end of the primary coil 93 opposite to the storage battery 11 and the end of the secondary coil 14 on the storage battery 11 side. Therefore, the density of the magnetic flux interlinking with the secondary coil 14 is increased, and the charging efficiency can be improved.

（５）第２の孔７２に磁性部材１３が配置され、延設部７２Ａによって、磁性部材１３の位置ずれが規制されているので、磁性部材１３に固定された２次コイル１４の位置を確定することができ、２次コイル１４の中心軸と１次コイル９３の中心軸とのずれを抑えることができ、充電効率が向上される。 (5) Since the magnetic member 13 is disposed in the second hole 72 and the positional deviation of the magnetic member 13 is restricted by the extending portion 72A, the position of the secondary coil 14 fixed to the magnetic member 13 is determined. Therefore, the deviation between the central axis of the secondary coil 14 and the central axis of the primary coil 93 can be suppressed, and the charging efficiency is improved.

（６）弾性部材１２を蓄電池１１と磁性部材１３との間に配置すればよいので、外枠２および裏蓋４などの部材については、設計変更が不要で従来のものを使用でき、外枠２や裏蓋４の構造が複雑化しなくて済む。 (6) Since the elastic member 12 may be disposed between the storage battery 11 and the magnetic member 13, the members such as the outer frame 2 and the back cover 4 need not be changed in design, and conventional ones can be used. 2 and the structure of the back cover 4 need not be complicated.

（７）弾性部材１２を蓄電池１１と磁性部材１３との間に配置するので、落下および異物との衝突等による衝撃が加わった際に、質量の比較的大きい蓄電池１１への衝撃を弾性部材１２が吸収して、蓄電池１１および蓄電池１１の周囲に配置された部材の破損を防止することができる。 (7) Since the elastic member 12 is disposed between the storage battery 11 and the magnetic member 13, the impact on the storage battery 11 having a relatively large mass is applied to the elastic member 12 when an impact due to dropping, collision with a foreign object, or the like is applied. Can be absorbed, and damage to the storage battery 11 and members disposed around the storage battery 11 can be prevented.

（８）弾性部材１２を蓄電池１１と磁性部材１３との間に配置することで、充電に伴う２次コイル１４の発熱に対し、蓄電池１１や回路素子６Ａ等の温度上昇を防止することができ、機器の精度を安定させることができる。 (8) By disposing the elastic member 12 between the storage battery 11 and the magnetic member 13, it is possible to prevent the temperature increase of the storage battery 11, the circuit element 6 </ b> A, etc. against the heat generation of the secondary coil 14 due to charging. , The accuracy of the equipment can be stabilized.

［第２実施形態］
次に、本発明の第２実施形態に係る非接触充電式電子機器（以下、電子機器と示す）１Ａについて図４に基づいて説明する。
図４は、電子機器１Ａを示す縦断面図である。電子機器１Ａは、前記実施形態の電子機器１に対して外枠２Ａおよび機枠７Ａの形状が相違するもので、その他の構成は略同様である。すなわち、機枠７Ａには、前記実施形態での延設部７２Ａがなく、代わりに、外枠２Ａには、裏蓋４側の端部から裏蓋４に沿って外枠２Ａの中心軸Ａに向かって延設される延設部２３が形成されている。この延設部２３によって、外枠２Ａの中心軸Ａに直交する方向における磁性部材１３の位置ずれが規制されている。なお、この延設部２３によって本発明の規制部が構成される。 [Second Embodiment]
Next, a non-contact rechargeable electronic device (hereinafter referred to as an electronic device) 1A according to a second embodiment of the present invention will be described with reference to FIG.
FIG. 4 is a longitudinal sectional view showing the electronic apparatus 1A. The electronic device 1A is different from the electronic device 1 of the embodiment in the shapes of the outer frame 2A and the machine frame 7A, and the other configurations are substantially the same. That is, the machine frame 7A does not have the extending portion 72A in the above embodiment, and instead, the outer frame 2A has the central axis A of the outer frame 2A along the back cover 4 from the end on the back cover 4 side. An extending portion 23 extending toward the surface is formed. By this extending portion 23, the positional deviation of the magnetic member 13 in the direction orthogonal to the central axis A of the outer frame 2 </ b> A is restricted. The extending portion 23 constitutes a restricting portion of the present invention.

第２実施形態によれば、前記第１実施形態の（１）〜（４），（７），（８）の効果と略同様の効果に加えて、次の効果を奏することができる。
（９）第１実施形態では、機枠７によって、２次コイル１４が固定される磁性部材１３の位置ずれが規制されていたが、外枠２に対する機枠７の位置ずれが２次コイル１４の位置ずれに影響する。これに対して、本実施形態によれば、２次コイル１４が固定された磁性部材１３の位置ずれを外枠２Ａの延設部２３によって直接、規制しているので、１次コイル９３に対する２次コイル１４の位置ずれをより小さくすることができる。 According to the second embodiment, in addition to the effects substantially similar to the effects (1) to (4), (7), and (8) of the first embodiment, the following effects can be achieved.
(9) In the first embodiment, the position deviation of the magnetic member 13 to which the secondary coil 14 is fixed is regulated by the machine frame 7, but the position deviation of the machine frame 7 with respect to the outer frame 2 is the secondary coil 14. Affects misalignment. On the other hand, according to the present embodiment, the positional deviation of the magnetic member 13 to which the secondary coil 14 is fixed is directly regulated by the extending portion 23 of the outer frame 2A. The positional deviation of the secondary coil 14 can be further reduced.

［第３実施形態］
次に、本発明の第３実施形態に係る非接触充電式電子機器（以下、電子機器と示す）１Ｂについて図５に基づいて説明する。
図５は、電子機器１Ｂを示す縦断面図である。電子機器１Ｂは、前記実施形態の電子機器１に対して機枠７Ｂの構成が相違し、２次コイル１４および磁性部材１３Ａが実装された充電用回路基板１５を備えているもので、その他の構成は略同様である。すなわち、機枠７Ｂには、前記第１実施形態の延設部７２Ａがなく、代わりに、第１の孔７１の開口面積よりも大きい開口面積を有した第３の孔７３が形成されている。この第３の孔７３には、充電保護回路素子１６が実装された充電用回路基板１５が配置されている。また、第３の孔７３には、下方に突出した突起部７４が形成され、この突起部７４に対して充電用回路基板１５に形成された案内穴１５１が挿通されている。このようにして、充電用回路基板１５に実装された２次コイル１４の中心軸に直交する方向の位置ずれが規制されている。なお、この突起部７４によって本発明の規制部が構成される。
弾性部材１２は、蓄電池１１と充電用回路基板１５との間に配置され、充電用回路基板１５を裏蓋４に向かって付勢している。これによって、充電用回路基板１５に実装された２次コイル１４が裏蓋４に常に付勢された状態が維持される。
充電保護回路素子１６は、本発明の充電保護回路を構成し、２次コイル１４で取り出された電力を蓄電池１１に伝送する時に、過充電を防止し、さらに、充電に伴う蓄電池１１の過度な発熱を防止することによって蓄電池１１を保護する回路を構成している。 [Third Embodiment]
Next, a non-contact rechargeable electronic device (hereinafter referred to as an electronic device) 1B according to a third embodiment of the present invention will be described with reference to FIG.
FIG. 5 is a longitudinal sectional view showing the electronic apparatus 1B. The electronic device 1B is different from the electronic device 1 of the above embodiment in the configuration of the machine casing 7B, and includes a charging circuit board 15 on which the secondary coil 14 and the magnetic member 13A are mounted. The configuration is substantially the same. That is, the machine frame 7B does not have the extending portion 72A of the first embodiment, and instead, a third hole 73 having an opening area larger than the opening area of the first hole 71 is formed. . In the third hole 73, the charging circuit board 15 on which the charging protection circuit element 16 is mounted is disposed. Further, the third hole 73 is formed with a protruding portion 74 protruding downward, and a guide hole 151 formed in the charging circuit board 15 is inserted into the protruding portion 74. In this way, the positional deviation in the direction orthogonal to the central axis of the secondary coil 14 mounted on the charging circuit board 15 is regulated. The protrusion 74 constitutes a restricting portion of the present invention.
The elastic member 12 is disposed between the storage battery 11 and the charging circuit board 15 and biases the charging circuit board 15 toward the back cover 4. As a result, the state where the secondary coil 14 mounted on the charging circuit board 15 is always urged to the back cover 4 is maintained.
The charge protection circuit element 16 constitutes the charge protection circuit of the present invention, prevents overcharge when transmitting the electric power extracted by the secondary coil 14 to the storage battery 11, and further prevents excessive storage battery 11 due to charging. The circuit which protects the storage battery 11 by preventing heat_generation | fever is comprised.

第３実施形態によれば、前記第１実施形態の（１）〜（４），（６），（７），（８）の効果と略同様の効果に加えて、次の効果を奏することができる。
（１０）前記第１実施形態の磁性部材１３は、本実施形態の充電用回路基板１５のような別部材に貼り付けられておらず、２次コイル１４を固定し、かつ、磁性部材１３自体の形状を安定させるために所定の厚さ寸法を必要とする。そのため、磁束ロスを抑制するために必要な厚さ寸法よりも大きく厚さ寸法が設定される場合がある。これに対して、本実施形態の磁性部材１３Ａは、充電用回路基板１５の裏蓋４側に貼り付けられているので、磁性部材１３Ａの厚さ寸法は、磁束ロスを抑制するために最低限必要な厚さ寸法とすることができ、磁性部材１３Ａの薄型化を図ることができる。 According to the third embodiment, in addition to substantially the same effects as the effects (1) to (4), (6), (7), and (8) of the first embodiment, the following effects are achieved. Can do.
(10) The magnetic member 13 of the first embodiment is not attached to another member such as the charging circuit board 15 of the present embodiment, fixes the secondary coil 14, and the magnetic member 13 itself. In order to stabilize the shape, a predetermined thickness dimension is required. Therefore, the thickness dimension may be set larger than the thickness dimension necessary for suppressing magnetic flux loss. On the other hand, since the magnetic member 13A of this embodiment is affixed to the back cover 4 side of the charging circuit board 15, the thickness dimension of the magnetic member 13A is the minimum in order to suppress the magnetic flux loss. The required thickness dimension can be obtained, and the magnetic member 13A can be thinned.

（１１）充電用回路基板１５に充電保護回路素子１６とともに２次コイル１４と磁性部材１３Ａが実装されているので、これらの充電用回路基板１５と２次コイル１４と磁性部材１３Ａとを個別に配置する場合と比べて、部品点数が少なくて済むので、取り付け作業を容易に実現することができる。
（１２）充電に伴う蓄電池１１の発熱に対して、弾性部材１２の断熱効果により、充電用回路基板１５に実装された充電保護回路素子１６などの回路素子の温度上昇を防止することができる。充電保護回路素子１６などの性能を安定させることができる。 (11) Since the secondary coil 14 and the magnetic member 13A are mounted on the charging circuit board 15 together with the charge protection circuit element 16, the charging circuit board 15, the secondary coil 14, and the magnetic member 13A are individually connected. Since the number of parts can be reduced as compared with the case of arrangement, the mounting operation can be easily realized.
(12) With respect to heat generated by the storage battery 11 due to charging, the heat insulation effect of the elastic member 12 can prevent the temperature of circuit elements such as the charge protection circuit element 16 mounted on the charging circuit board 15 from rising. The performance of the charge protection circuit element 16 and the like can be stabilized.

［第４実施形態］
次に、本発明の第４実施形態に係る非接触充電式電子機器（以下、電子機器と示す）１Ｃについて図６に基づいて説明する。
図６は、電子機器１Ｃを示す縦断面図である。電子機器１Ｃは、前記第３実施形態の電子機器１Ｂに対して充電用回路基板１５Ａの構成が相違するもので、その他の構成は略同様である。すなわち、充電用回路基板１５Ａは、コイル収納用の孔としてのコイル収納部１５２が形成され、このコイル収納部１５２に２次コイル１４および磁性部材１３Ｂとが収納されている。 [Fourth Embodiment]
Next, a non-contact rechargeable electronic device (hereinafter, referred to as an electronic device) 1C according to a fourth embodiment of the present invention will be described with reference to FIG.
FIG. 6 is a longitudinal sectional view showing the electronic apparatus 1C. The electronic device 1C is different from the electronic device 1B of the third embodiment in the configuration of the charging circuit board 15A, and the other configurations are substantially the same. That is, the charging circuit board 15 </ b> A is formed with a coil storage portion 152 as a coil storage hole, and the secondary coil 14 and the magnetic member 13 </ b> B are stored in the coil storage portion 152.

第４実施形態によれば、前記第１実施形態の（１）〜（４），（６），（７），（８）の効果、および、前記第３実施形態の効果と略同様の効果に加えて、次の効果を奏することができる。
（１３）２次コイル１４および磁性部材１３Ｂを充電用回路基板１５Ａの内部に収納することによって、前記第３実施形態のように２次コイル１４および磁性部材１３Ａを充電用回路基板１５の表面に実装する場合と比較すると、２次コイル１４および磁性部材１３Ｂを含めた充電用回路基板１５Ａの厚さ方向の寸法を小さくすることができ、電子機器１Ｃの薄型化をさらに実施することができる。
なお、本実施形態では、磁性部材１３Ｂの一部がコイル収納部１５２から蓄電池１１側に突出して配置されている場合であってもよい。 According to the fourth embodiment, the effects (1) to (4), (6), (7), (8) of the first embodiment and substantially the same effects as the effects of the third embodiment. In addition, the following effects can be achieved.
(13) By storing the secondary coil 14 and the magnetic member 13B inside the charging circuit board 15A, the secondary coil 14 and the magnetic member 13A are placed on the surface of the charging circuit board 15 as in the third embodiment. Compared with the case of mounting, the dimension in the thickness direction of the charging circuit board 15A including the secondary coil 14 and the magnetic member 13B can be reduced, and the electronic device 1C can be further reduced in thickness.
In addition, in this embodiment, the case where a part of magnetic member 13B protrudes from the coil accommodating part 152 to the storage battery 11 side may be sufficient.

［第５実施形態］
次に、本発明の第５実施形態に係る非接触充電式電子機器（以下、電子機器と示す）１Ｄについて図７に基づいて説明する。
図７は、電子機器１Ｄを示す縦断面図である。電子機器１Ｄは、前記第１実施形態の電子機器１に対して裏蓋４Ａの構成が相違するもので、その他の構成は略同様である。すなわち、裏蓋４Ａは、２次コイル１４の空芯部１４１に係合される突起部４１を有している。なお、この突起部４１によって本発明の規制部が構成される。 [Fifth Embodiment]
Next, a non-contact rechargeable electronic device (hereinafter, referred to as an electronic device) 1D according to a fifth embodiment of the present invention will be described with reference to FIG.
FIG. 7 is a longitudinal sectional view showing the electronic apparatus 1D. The electronic device 1D is different from the electronic device 1 of the first embodiment in the configuration of the back cover 4A, and the other configurations are substantially the same. That is, the back cover 4 </ b> A has a protruding portion 41 that is engaged with the air core portion 141 of the secondary coil 14. The protrusion 41 constitutes a restricting portion of the present invention.

第５実施形態によれば、前記第１実施形態の（１）〜（４），（７），（８）の効果と略同様の効果に加えて、次の効果を奏することができる。
（１４）前記第１実施形態では、機枠７の延設部７２Ａによって、磁性部材１３の位置ずれを規制していたが、本実施形態では、裏蓋４Ａの突起部４１によって２次コイル１４の中心軸に直交する方向の位置ずれを規制するので、機枠７Ｄで磁性部材１３を規制する必要がなくなる。さらに、磁性部材１３ではなく、２次コイル１４の位置ずれを直接、突起部４１によって規制するので、磁性部材１３を介して２次コイル１４の位置ずれを規制する場合と比べて、２次コイル１４の位置ずれを確実に規制することができ、より精度よく２次コイル１４の位置を確定することができる。 According to the fifth embodiment, in addition to substantially the same effects as the effects (1) to (4), (7), and (8) of the first embodiment, the following effects can be achieved.
(14) In the first embodiment, the positional deviation of the magnetic member 13 is restricted by the extending portion 72A of the machine frame 7, but in the present embodiment, the secondary coil 14 is caused by the protrusion 41 of the back cover 4A. Therefore, it is not necessary to regulate the magnetic member 13 by the machine casing 7D. Furthermore, since the positional deviation of the secondary coil 14, not the magnetic member 13, is directly regulated by the protrusion 41, the secondary coil is compared with the case where the positional deviation of the secondary coil 14 is regulated via the magnetic member 13. 14 can be reliably regulated, and the position of the secondary coil 14 can be determined with higher accuracy.

［第６実施形態］
次に、本発明の第６実施形態に係る非接触充電式電子機器（以下、電子機器と示す）１Ｅについて図８に基づいて説明する。
図８（Ａ）は、電子機器１Ｅを示す縦断面図であり、図８（Ｂ）は、その一部を拡大して示した縦断面図である。電子機器１Ｅは、前記実施形態の電子機器１に対して２次コイル１７Ａおよび裏蓋４Ｂの構成が相違するもので、その他の構成は略同様である。すなわち、２次コイル１７Ａは、銅箔などの薄膜状導電性材料が基板上に貼られたコイル形成基板１７の箔部をエッチングすることによって成形されている。この２次コイル１７Ａは、外枠２の中心軸Ａ方向に渦巻き線状に巻かれた平面コイルであり、中心軸Ａ方向に貫通する空芯部１７１Ａを有している。磁性部材１３は、コイル形成基板１７に対して蓄電池１１側に配置され、弾性部材１２は、磁性部材１３と蓄電池１１との間に配置され、磁性部材１３を介して２次コイル１７Ａを裏蓋４Ｂ側に付勢している。
裏蓋４Ｂの内面には、蓄電池１１側に突出する突起部４２が形成され、コイル形成基板１７には、この突起部４２が係合される案内穴１７１が形成されている。このようにして、外枠２の中心軸Ａと直交する方向におけるコイル形成基板１７の位置ずれが突起部４２によって規制される。なお、この突起部４２によって本発明の規制部が構成される。 [Sixth Embodiment]
Next, a non-contact rechargeable electronic device (hereinafter referred to as an electronic device) 1E according to a sixth embodiment of the present invention will be described with reference to FIG.
FIG. 8A is a longitudinal sectional view showing the electronic apparatus 1E, and FIG. 8B is an enlarged longitudinal sectional view showing a part thereof. The electronic device 1E is different from the electronic device 1 of the embodiment in the configuration of the secondary coil 17A and the back cover 4B, and the other configurations are substantially the same. That is, the secondary coil 17A is formed by etching a foil portion of the coil forming substrate 17 in which a thin film conductive material such as a copper foil is pasted on the substrate. The secondary coil 17A is a planar coil wound in a spiral shape in the direction of the central axis A of the outer frame 2, and has an air core portion 171A penetrating in the direction of the central axis A. The magnetic member 13 is disposed on the storage battery 11 side with respect to the coil forming substrate 17, and the elastic member 12 is disposed between the magnetic member 13 and the storage battery 11, and the secondary coil 17 </ b> A is back-covered via the magnetic member 13. It is energized to the 4B side.
A protrusion 42 that protrudes toward the storage battery 11 is formed on the inner surface of the back cover 4B, and a guide hole 171 in which the protrusion 42 is engaged is formed in the coil forming substrate 17. In this manner, the positional deviation of the coil forming substrate 17 in the direction orthogonal to the central axis A of the outer frame 2 is restricted by the protrusion 42. The protruding portion 42 constitutes a restricting portion of the present invention.

第６実施形態によれば、前記第１実施形態の（１）〜（４），（７），（８）の効果、および、第３実施形態の（１０）の効果と略同様の効果に加えて、次の効果を奏することができる。
（１５）２次コイル１７Ａがコイル形成基板１７上に導体の箔部をエッチングすることによって成形された渦巻き線状の平面コイルであるので、前記第１実施形態の導線が外枠２の中心軸Ａ方向に螺旋状に巻かれた２次コイル１４と比較すると、２次コイル１７Ａをより薄く成形することができる。従って、２次コイル１７Ａの配置に必要な空間を小さくすることができるので、電子機器１Ｅの薄型化をさらに図ることができる。
（１６）コイル形成基板１７に２次コイル１７Ａを成形する工程と同じ工程で、２次コイル１７Ａが成形される部分とは異なる部分に案内穴１７１を形成することができるので、案内穴１７１をコイル形成基板１７に容易に形成することができる。
（１７）この案内穴１７１に突起部４２を係合させることで、コイル形成基板１７の位置ずれを規制するので、外枠２の中心軸Ａに直交する方向において、コイル形成基板１７に一体形成された２次コイル１７Ａの位置決め精度を一層向上させることができる。 According to the sixth embodiment, the effects (1) to (4), (7), (8) of the first embodiment and the effects (10) of the third embodiment are substantially the same. In addition, the following effects can be achieved.
(15) Since the secondary coil 17A is a spiral planar coil formed by etching a conductor foil portion on the coil forming substrate 17, the conducting wire of the first embodiment is the central axis of the outer frame 2. Compared with the secondary coil 14 spirally wound in the A direction, the secondary coil 17A can be formed thinner. Therefore, since the space required for the arrangement of the secondary coil 17A can be reduced, the electronic device 1E can be further reduced in thickness.
(16) Since the guide hole 171 can be formed in a portion different from the portion where the secondary coil 17A is formed in the same step as the step of forming the secondary coil 17A on the coil forming substrate 17, the guide hole 171 is It can be easily formed on the coil forming substrate 17.
(17) Since the protrusion 42 is engaged with the guide hole 171 to restrict the displacement of the coil forming substrate 17, it is integrally formed with the coil forming substrate 17 in the direction orthogonal to the central axis A of the outer frame 2. The positioning accuracy of the secondary coil 17A thus made can be further improved.

［第７実施形態］
次に、本発明の第７実施形態に係る非接触充電式電子機器（以下、電子機器と示す）１Ｆについて図９および図１０に基づいて説明する。
図９は、電子機器１Ｆを示す縦断面図であり、図１０は、電子機器１Ｆの使用状態を示す斜視図である。電子機器１Ｆは、前記第１実施形態の電子機器１に対して裏蓋４Ｃ、蓄電池１１Ａ、磁性部材１３Ｃ、２次コイル１４Ａの形状が相違するもので、その他の構成は略同様である。
裏蓋４Ｃは、外枠２Ｂの内部に向かって窪んで湾曲されている。すなわち、裏蓋４Ｃは、外枠２Ｂを構成する一対の長辺外枠部２１Ｂを結ぶ方向において、中央部がカバーガラス３側に窪んだ凹溝状に形成されている。蓄電池１１Ａは、薄い袋状の電池容器に収納されており、容易に湾曲可能で、かつ、外枠２Ｂの中心軸Ａ方向に直交する方向に、弾性変形可能に形成されている。２次コイル１４Ａは扁平型コイルであり、容易に湾曲可能に形成されている。また、磁性部材１３Ｃは、裏蓋４Ｃの凹溝部の形状に沿って湾曲して形成されている。以上のように、２次コイル１４Ａ、磁性部材１３Ｃおよび蓄電池１１Ａは、裏蓋４Ｃの凹溝部の形状に沿って変形可能に形成され、外枠２Ｂの内部に配置されている。
このような構成の電子機器１Ｆは、図１０に示すように、例えば、使用者の腕に装着して使用される。 [Seventh Embodiment]
Next, a non-contact rechargeable electronic device (hereinafter, referred to as an electronic device) 1F according to a seventh embodiment of the present invention will be described with reference to FIGS. 9 and 10.
FIG. 9 is a longitudinal sectional view showing the electronic apparatus 1F, and FIG. 10 is a perspective view showing a usage state of the electronic apparatus 1F. The electronic device 1F is different from the electronic device 1 of the first embodiment in the shapes of the back cover 4C, the storage battery 11A, the magnetic member 13C, and the secondary coil 14A, and the other configurations are substantially the same.
The back cover 4C is recessed and curved toward the inside of the outer frame 2B. That is, the back cover 4C is formed in a concave groove shape whose central portion is recessed toward the cover glass 3 in the direction connecting the pair of long side outer frame portions 21B constituting the outer frame 2B. The storage battery 11A is housed in a thin bag-shaped battery container, and can be easily bent, and can be elastically deformed in a direction perpendicular to the direction of the central axis A of the outer frame 2B. The secondary coil 14A is a flat coil and is formed so as to be easily bent. Further, the magnetic member 13C is formed to be curved along the shape of the concave groove portion of the back cover 4C. As described above, the secondary coil 14A, the magnetic member 13C, and the storage battery 11A are formed so as to be deformable along the shape of the concave groove portion of the back cover 4C, and are disposed inside the outer frame 2B.
As shown in FIG. 10, the electronic device 1 </ b> F having such a configuration is used by being worn on a user's arm, for example.

第７実施形態によれば、前記第１実施形態の（１）〜（４），（７），（８）の効果と略同様の効果に加えて、次の効果を奏することができる。
（１８）電子機器１Ｆを腕や足などの身体に装着する際に、裏蓋４Ｃの外表面が身体の形状に合って、身体への装着性が向上される。 According to the seventh embodiment, in addition to substantially the same effects as the effects (1) to (4), (7), and (8) of the first embodiment, the following effects can be achieved.
(18) When the electronic device 1F is mounted on a body such as an arm or a leg, the outer surface of the back cover 4C matches the shape of the body, so that the mounting on the body is improved.

（１９）裏蓋４Ｃが外枠２Ｂの内部に向かって窪んで凹溝状に湾曲されていることで、外枠２Ｂ内部における中心軸Ａ方向の寸法が小さくなっても、蓄電池１１Ａが外枠２Ｂの中心軸Ａ方向に直交する方向に弾性変形して中心軸Ａ方向の寸法が小さくなるので、外枠２Ｂ内部に２次コイル１４Ａ、磁性部材１３Ｃ、弾性部材１２、蓄電池１１Ａを配置できる。 (19) Since the back cover 4C is recessed toward the inside of the outer frame 2B and is curved in a concave groove shape, the storage battery 11A can be attached to the outer frame 2B even if the dimension in the central axis A direction inside the outer frame 2B is reduced. Since the size in the direction of the central axis A is reduced by elastic deformation in the direction perpendicular to the direction of the central axis A of 2B, the secondary coil 14A, the magnetic member 13C, the elastic member 12, and the storage battery 11A can be arranged inside the outer frame 2B.

（２０）裏蓋４Ｃの凹溝状の形状に沿って、２次コイル１４Ａおよび蓄電池１１Ａが変形され、磁性部材１３Ｃが湾曲して形成されているので、２次コイル１４Ａ、磁性部材１３Ｃ、弾性部材１２、蓄電池１１Ａを外枠２Ｂ内部に効率よく配置できる。 (20) Since the secondary coil 14A and the storage battery 11A are deformed along the concave groove shape of the back cover 4C and the magnetic member 13C is curved, the secondary coil 14A, the magnetic member 13C, and the elastic The member 12 and the storage battery 11A can be efficiently arranged inside the outer frame 2B.

［本発明の変形例］
なお、本発明は前述の各実施形態に限定されるものではなく、本発明の目的を達成できる範囲での変形、改良等は本発明に含まれるものである。
例えば、本発明の非接触充電式電子機器１Ｇは、図１１に示すような構成を採用してもよい。図１１は、本発明の変形例に係る電子機器１Ｇを示す縦断面図である。
電子機器１Ｇは、金属製の裏蓋本体部４３と、非導電性材料である透明なガラス製の裏蓋カバーガラス４４とから成る裏蓋４Ｄを有している。裏蓋カバーガラス４４は、裏蓋本体部４３の中央部に形成された貫通孔４３１に嵌め込まれ、２次コイル１４の導線部１４２に当接されている。この裏蓋カバーガラス４４を介して外枠２の内部が視認可能となっている。
このような構成の電子機器１Ｇによれば、２次コイル１４の導線部１４２が裏蓋カバーガラス４４と当接するので、導線部１４２の外周は金属と対向しない構成とすることができる。
なお、裏蓋カバーガラス４４は、非導電性材料で形成されていればよく、ガラス以外の、例えば、合成樹脂やセラミックス等で形成されてもよい。また、裏蓋において、少なくとも、２次コイルと対向する領域部が非導電性材料で形成されていればよいので、２次コイルの空芯部と対向する領域部の材質については、非導電性材料以外の材質であってもよい。 [Modification of the present invention]
The present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
For example, the non-contact rechargeable electronic device 1G of the present invention may adopt a configuration as shown in FIG. FIG. 11 is a longitudinal sectional view showing an electronic apparatus 1G according to a modification of the present invention.
The electronic device 1G includes a back cover 4D including a metal back cover main body 43 and a transparent glass back cover cover glass 44 that is a non-conductive material. The back cover cover glass 44 is fitted into a through hole 431 formed at the center of the back cover main body 43 and is in contact with the conducting wire part 142 of the secondary coil 14. The inside of the outer frame 2 is visible through the back cover glass 44.
According to the electronic device 1G having such a configuration, since the conducting wire portion 142 of the secondary coil 14 contacts the back cover glass 44, the outer periphery of the conducting wire portion 142 can be configured not to face the metal.
In addition, the back cover cover glass 44 should just be formed with the nonelectroconductive material, for example, may be formed with synthetic resins, ceramics, etc. other than glass. Further, in the back cover, at least the region facing the secondary coil only needs to be formed of a non-conductive material, so the material of the region facing the air core of the secondary coil is non-conductive. A material other than the material may be used.

前記各実施形態では、蓄電源として蓄電池の例を説明したが、本発明の蓄電源としては、蓄電池に限らず、コンデンサのような素子であってもよい。
前記各実施形態では、外枠と裏蓋とが個別に形成された例を説明したが、これに限らず、外枠と裏蓋とが一体で形成されていてもよい。
前記各実施形態では、２次コイルの蓄電源側に磁性部材が配置されている例を説明したが、磁性部材が配置されていなくてもよい。そして、弾性部材は、蓄電源と２次コイルとの間に介在して配置されていてもよい。また、２次コイルと弾性部材との間に、絶縁性を有する絶縁部材を配置して、この絶縁部材を介して２次コイルが弾性部材によって付勢されていてもよい。また、２次コイルを絶縁部材に固定して、外枠の中心軸Ａに直交する方向における絶縁部材の位置ずれを規制する規制部を設けてもよい。
前記各実施形態における２次コイルの空芯部１４１，１７１Ａの軸は、２次コイルの中心軸上に形成されていてもよく、または、２次コイルの中心軸から偏芯して形成されていてもよい。
前記第３実施形態では、充電用回路基板に２次コイルを実装した例を説明したが、この充電用回路基板を２次コイルとともに全体を樹脂で覆ってもよい。また、前記第６実施形態では、コイル形成基板に２次コイルを成形する例を説明したが、同様に、コイル形成基板の全体を樹脂で覆ってもよい。 In each said embodiment, although the example of the storage battery was demonstrated as a storage power supply, as a storage power supply of this invention, not only a storage battery but an element like a capacitor | condenser may be sufficient.
In each of the above embodiments, an example in which the outer frame and the back cover are individually formed has been described. However, the present invention is not limited to this, and the outer frame and the back cover may be integrally formed.
In each of the above embodiments, the example in which the magnetic member is disposed on the storage power source side of the secondary coil has been described, but the magnetic member may not be disposed. The elastic member may be disposed between the storage power source and the secondary coil. Further, an insulating member having an insulating property may be disposed between the secondary coil and the elastic member, and the secondary coil may be urged by the elastic member via the insulating member. Moreover, you may provide the control part which fixes a secondary coil to an insulating member and controls the position shift of the insulating member in the direction orthogonal to the central axis A of an outer frame.
The axis of the air core portions 141 and 171A of the secondary coil in each of the above embodiments may be formed on the center axis of the secondary coil, or formed eccentrically from the center axis of the secondary coil. May be.
In the third embodiment, the example in which the secondary coil is mounted on the charging circuit board has been described. However, the charging circuit board may be entirely covered with a resin together with the secondary coil. Moreover, in the said 6th Embodiment, although the example which shape | molds a secondary coil in a coil formation board | substrate was demonstrated, you may cover the whole coil formation board | substrate with resin similarly.

その他、本発明を実施するための最良の構成、方法等は、以上の記載で開示されているが、本発明は、これに限定されるものではない。すなわち、本発明は、主に特定の実施形態に関して特に図示され、かつ説明されているが、本発明の技術的思想および目的の範囲から逸脱することなく、以上述べた実施形態に対し、形状、材質、数量、その他の詳細な構成において、当業者が様々な変形を加えることができるものである。
従って、上記に開示した形状、材質等を限定した記載は、本発明の理解を容易にするために例示的に記載したものであり、本発明を限定するものではないから、それらの形状、材質等の限定の一部もしくは全部の限定を外した部材の名称での記載は、本発明に含まれるものである。 In addition, the best configuration, method and the like for carrying out the present invention have been disclosed above, but the present invention is not limited to this. That is, the invention has been illustrated and described with particular reference to certain specific embodiments, but without departing from the spirit and scope of the invention, Various modifications can be made by those skilled in the art in terms of material, quantity, and other detailed configurations.
Therefore, the description limited to the shape, material, etc. disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of one part or all of such is included in this invention.

本発明の第１実施形態に係る非接触充電式電子機器を示す正面図。The front view which shows the non-contact rechargeable electronic device which concerns on 1st Embodiment of this invention. 前記実施形態の非接触充電式電子機器を示す縦断面図。The longitudinal cross-sectional view which shows the non-contact rechargeable electronic device of the said embodiment. 前記実施形態に係る外部電源と前記非接触充電式電子機器とを組み合わせた状態を示す縦断面図。The longitudinal cross-sectional view which shows the state which combined the external power supply which concerns on the said embodiment, and the said non-contact rechargeable electronic device. 本発明の第２実施形態に係る非接触充電式電子機器を示す縦断面図。The longitudinal cross-sectional view which shows the non-contact rechargeable electronic device which concerns on 2nd Embodiment of this invention. 本発明の第３実施形態に係る非接触充電式電子機器を示す縦断面図。The longitudinal cross-sectional view which shows the non-contact rechargeable electronic device which concerns on 3rd Embodiment of this invention. 本発明の第４実施形態に係る非接触充電式電子機器を示す縦断面図。The longitudinal cross-sectional view which shows the non-contact rechargeable electronic device which concerns on 4th Embodiment of this invention. 本発明の第５実施形態に係る非接触充電式電子機器を示す縦断面図。The longitudinal cross-sectional view which shows the non-contact rechargeable electronic device which concerns on 5th Embodiment of this invention. 本発明の第６実施形態に係る非接触充電式電子機器を示す縦断面図。The longitudinal cross-sectional view which shows the non-contact rechargeable electronic device which concerns on 6th Embodiment of this invention. 本発明の第７実施形態に係る非接触充電式電子機器を示す縦断面図。The longitudinal cross-sectional view which shows the non-contact rechargeable electronic device which concerns on 7th Embodiment of this invention. 前記実施形態の非接触充電式電子機器の使用状態を示す斜視図。The perspective view which shows the use condition of the non-contact rechargeable electronic device of the said embodiment. 本発明の変形例に係る非接触充電式電子機器を示す縦断面図。The longitudinal cross-sectional view which shows the non-contact charge-type electronic device which concerns on the modification of this invention.

符号の説明Explanation of symbols

１，１Ａ，１Ｂ，１Ｃ，１Ｄ，１Ｅ，１Ｆ，１Ｇ…非接触充電式電子機器、２，２Ａ，２Ｂ…外枠、４，４Ａ，４Ｂ，４Ｃ，４Ｄ…裏蓋、９…充電器（外部電源）、１１，１１Ａ…蓄電池（蓄電源）、１２…弾性部材、１３，１３Ａ，１３Ｂ，１３Ｃ…磁性部材、１４，１４Ａ…２次コイル、１５，１５Ａ…充電用回路基板、１６…充電保護回路素子（充電保護回路）、１７…コイル形成基板、１７Ａ…２次コイル、２３…延設部（規制部）、４１…突起部（規制部）、４２…突起部（規制部）、７２Ａ…延設部（規制部）、７４，７４Ａ…突起部（規制部）、９３…１次コイル、１４１…空芯部、１５２…コイル収納部（コイル収納用の孔）。   1, 1A, 1B, 1C, 1D, 1E, 1F, 1G ... Non-contact rechargeable electronic devices, 2, 2A, 2B ... Outer frame, 4, 4A, 4B, 4C, 4D ... Back cover, 9 ... Charger ( External power source), 11, 11A ... Storage battery (storage power source), 12 ... Elastic member, 13, 13A, 13B, 13C ... Magnetic member, 14, 14A ... Secondary coil, 15, 15A ... Circuit board for charging, 16 ... Charging Protection circuit element (charge protection circuit), 17 ... Coil forming substrate, 17A ... Secondary coil, 23 ... Extension part (regulation part), 41 ... Projection part (regulation part), 42 ... Projection part (regulation part), 72A ... Extension part (regulation part), 74, 74A ... Projection part (regulation part), 93 ... Primary coil, 141 ... Air core part, 152 ... Coil storage part (hole for coil storage).

Claims (9)

筒状の外枠と、
この外枠の一方の開口を塞ぐ裏蓋と、
この裏蓋の内側に配置され、前記外枠の中心軸方向における厚さ寸法が当該中心軸と直交する方向の幅寸法よりも小さく、外部電源が備える１次コイルの電磁誘導によって発電する２次コイルと、
前記外枠の中心軸方向における厚さ寸法が当該中心軸と直交する方向の幅寸法よりも小さい弾性部材と、
前記外枠の中心軸方向における厚さ寸法が当該中心軸と直交する方向の幅寸法よりも小さく、前記２次コイルで発電される電力を蓄え、前記外枠の中心軸方向に厚さ寸法が増加する蓄電源とを備え、
前記２次コイルと、前記弾性部材と、前記蓄電源とは、前記外枠の中心軸方向に、裏蓋の内側から順に積層されており、
前記弾性部材は、前記蓄電源の厚さ寸法が増加した場合に、当該厚さ寸法の増加に応じて弾性変形可能に取り付けられるとともに、前記２次コイルを前記裏蓋側に付勢し、
前記２次コイルは、前記弾性部材によって前記裏蓋に当接され、
前記裏蓋において少なくとも前記２次コイルと対向する領域部は、非導電性材料で形成されていることを特徴とする非接触充電式電子機器。 A cylindrical outer frame,
A back cover that closes one opening of the outer frame;
A secondary battery that is disposed inside the back cover and has a thickness dimension in the central axis direction of the outer frame smaller than a width dimension in a direction perpendicular to the central axis, and generates power by electromagnetic induction of a primary coil provided in an external power source. Coils,
An elastic member having a thickness dimension in a central axis direction of the outer frame smaller than a width dimension in a direction perpendicular to the central axis;
The thickness dimension in the central axis direction of the outer frame is smaller than the width dimension in the direction orthogonal to the central axis, the electric power generated by the secondary coil is stored, and the thickness dimension in the central axis direction of the outer frame is With increasing storage power,
The secondary coil, the elastic member, and the accumulator are stacked in order from the inner side of the back cover in the central axis direction of the outer frame,
When the thickness dimension of the accumulator increases, the elastic member is attached to be elastically deformable according to the increase in the thickness dimension, and urges the secondary coil toward the back cover side.
The secondary coil is brought into contact with the back cover by the elastic member,
The non-contact rechargeable electronic device according to claim 1, wherein at least a region of the back cover facing the secondary coil is formed of a non-conductive material. 請求項１に記載の非接触充電式電子機器において、
前記２次コイルの前記蓄電源側には、磁性体で形成される磁性部材が配置され、
前記弾性部材は、前記磁性部材と前記蓄電源との間に配置されている
ことを特徴とする非接触充電式電子機器。 The contactless rechargeable electronic device according to claim 1,
A magnetic member formed of a magnetic material is disposed on the storage power source side of the secondary coil,
The contactless rechargeable electronic device, wherein the elastic member is disposed between the magnetic member and the accumulator. 請求項１または請求項２に記載の非接触充電式電子機器において、
前記裏蓋の内側には、前記２次コイルと、前記蓄電源の過充電を防止するための充電保護回路とが実装された充電用回路基板が配置され、
前記弾性部材は、前記充電用回路基板と前記蓄電源との間に配置され、前記充電用回路基板を前記裏蓋側に付勢していることを特徴とする非接触充電式電子機器。 In the non-contact rechargeable electronic device according to claim 1 or 2,
Inside the back cover, a circuit board for charging on which the secondary coil and a charge protection circuit for preventing overcharging of the storage power source are mounted is disposed,
The non-contact rechargeable electronic device, wherein the elastic member is disposed between the charging circuit board and the storage power source, and biases the charging circuit board toward the back cover side. 請求項３に記載の非接触充電式電子機器において、
前記充電用回路基板には、前記２次コイルの収納用の孔が形成されている
ことを特徴とする非接触充電式電子機器。 In the non-contact rechargeable electronic device according to claim 3,
The non-contact rechargeable electronic device according to claim 1, wherein a hole for accommodating the secondary coil is formed in the charging circuit board. 請求項１から請求項４のいずれかに記載の非接触充電式電子機器において、
前記外枠の中心軸と直交する方向における前記２次コイルの位置ずれを規制する規制部を備えていることを特徴とする非接触充電式電子機器。 In the non-contact rechargeable electronic device according to any one of claims 1 to 4,
A non-contact rechargeable electronic device comprising a restricting portion for restricting a positional deviation of the secondary coil in a direction orthogonal to a central axis of the outer frame. 請求項５に記載の非接触充電式電子機器において、
前記規制部は、前記裏蓋に形成され、前記２次コイルの空芯部と係合する突起部であることを特徴とする非接触充電式電子機器。 The contactless rechargeable electronic device according to claim 5,
The non-contact rechargeable electronic device, wherein the restricting portion is a protrusion formed on the back cover and engaged with an air core portion of the secondary coil. 請求項１から請求項６のいずれかに記載の非接触充電式電子機器において、
前記２次コイルは、基体の表面に導体の箔部が形成されたコイル形成基板から前記箔部をエッチングによって成形された渦巻き線状の平面コイルであり、
前記弾性部材は、前記コイル形成基板と前記蓄電源との間に配置されている
ことを特徴とする非接触充電式電子機器。 In the non-contact rechargeable electronic device according to any one of claims 1 to 6,
The secondary coil is a spiral planar coil formed by etching the foil part from a coil forming substrate in which a conductor foil part is formed on the surface of a base.
The non-contact rechargeable electronic device, wherein the elastic member is disposed between the coil forming substrate and the accumulator. 請求項７に記載の非接触充電式電子機器において、
前記外枠の中心軸と直交する方向における前記コイル形成基板の位置ずれを規制する規制部を備え、
この規制部は、前記外枠または前記裏蓋に形成されるとともに、前記コイル形成基板に形成された穴に係合される突状部または前記コイル形成基板の側部と当接する延設部であることを特徴とする非接触充電式電子機器。 The contactless rechargeable electronic device according to claim 7,
Comprising a restricting portion for restricting the positional deviation of the coil forming substrate in a direction orthogonal to the central axis of the outer frame;
The restricting portion is formed on the outer frame or the back cover, and is a projecting portion engaged with a hole formed on the coil forming substrate or an extending portion that contacts a side portion of the coil forming substrate. There is a non-contact rechargeable electronic device. 請求項１から請求項８のいずれかに記載の非接触充電式電子機器において、
前記裏蓋は、外枠の内部に向かって窪んで湾曲され、
前記蓄電源は、外枠の中心軸方向に直交する方向に、弾性変形可能に形成され、
前記２次コイルおよび前記蓄電源は、前記裏蓋の形状に沿って変形可能に形成されていることを特徴とする非接触充電式電子機器。 In the non-contact rechargeable electronic device according to any one of claims 1 to 8,
The back cover is concavely curved toward the inside of the outer frame,
The accumulator is formed to be elastically deformable in a direction orthogonal to the central axis direction of the outer frame,
The non-contact rechargeable electronic device, wherein the secondary coil and the accumulator are deformable along the shape of the back cover.
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