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JP3648580B2 - Rechargeable electrical equipment - Google Patents

Rechargeable electrical equipment
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Publication number
JP3648580B2
JP3648580B2JP25266196AJP25266196AJP3648580B2JP 3648580 B2JP3648580 B2JP 3648580B2JP 25266196 AJP25266196 AJP 25266196AJP 25266196 AJP25266196 AJP 25266196AJP 3648580 B2JP3648580 B2JP 3648580B2
Authority
JP
Japan
Prior art keywords
coil
chassis
coil bobbin
rechargeable electric
coupling
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
JP25266196A
Other languages
Japanese (ja)
Other versions
JPH1097931A (en
Inventor
俊之 津塩
裕一 加藤
史生 三原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
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 Matsushita Electric Works LtdfiledCriticalMatsushita Electric Works Ltd
Priority to JP25266196ApriorityCriticalpatent/JP3648580B2/en
Publication of JPH1097931ApublicationCriticalpatent/JPH1097931A/en
Application grantedgrantedCritical
Publication of JP3648580B2publicationCriticalpatent/JP3648580B2/en
Anticipated expirationlegal-statusCritical
Expired - Fee Relatedlegal-statusCriticalCurrent

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Description

Translated fromJapanese

【0001】
【発明の属する技術分野】
本発明は充電式電気機器、殊に充電のための電源との接続を電磁誘導による非接触で行うようにしたものに関する。
【0002】
【従来の技術】
充電式機器において、充電のための電源供給を電磁誘導による非接触で行うものが多くなっている。これは防水構造をとる必要がある機器において顕著である。
この場合、充電器側の一次側コイルとの間の電磁誘導結合性を良好に保つために、充電式電気機器の器体の所定位置に精度良く二次側コイルを配置することが要求されるが、従来は二次側コイルにおけるコイルボビンを弾性体による付勢で器体内面に密着させるなどの手段で二次側コイルの位置決め及び固定を行っていた。
【0003】
【発明が解決しようとする課題】
しかし、二次側コイルと弾性体とを組み込む関係上、部品数が多い上に組立性も良好ではなく、位置決め精度もさほど高くできないものであった。
本発明はこのような点に鑑み為されたものであり、その目的とするところは非接触充電のための二次側コイルを備えたものにおける組立性及び二次側コイルの位置精度を高くすることができる充電式電気機器を提供するにある。
【0004】
【課題を解決するための手段】
しかして本発明は、充電器側の一次側コイルとの電磁誘導結合のための二次側コイルを内蔵している充電式電気機器において、機器の器体の内底面と機器の内部部品の保持用であって上記器体内に収められているシャーシとの間に配された上記二次側コイルを、器体と一体に形成されたコイルボビンにコイルを巻回したものとして形成していることに、もしくはシャーシと一体に形成されたコイルボビンにコイルを巻回したものとして形成していることに特徴を有している。二次側コイルのコイルボビンが器体あるいはシャーシと一体であるために独立したコイルボビンを必要としないものであり、二次側コイルの位置精度を高くすることができるものである。
【0005】
そして、シャーシと器体との結合用のビスがコイルボビン内を貫通していると、電磁誘導結合性を高めることができるコアの役目をシャーシと器体との結合用のビスに持たせることができる。
【0006】
【発明の実施の形態】
本発明の実施の形態の一例について説明すると、図1に示す充電式電気機器は電気かみそりであり、筒状のハウジング10とハウジング10の下端開口を閉じている下カバー11とからなる器体1内には、ニッケルカドミウム電池やニッケルメタルハイドライド電池のような二次電池2がシャーシ15で保持された状態で納められている。該シャーシ15は、ハウジング10の下端開口からハウジング10内に差し込まれてハウジング10の上端側においてハウジング10にビス止め固定されるものであり、上記二次電池2のほか、モータ(図示せず)や充電回路基板等も保持するものとなっている。そして器体1内の下端部でシャーシ15の下端面と下カバー11との間には電磁誘導による非接触充電のための二次側コイル3が納められている。
【0007】
上記二次側コイル3は、コイルボビン30にコイル31を巻いたものとして構成されているのであるが、ここにおけるコイルボビン30は器体1の下カバー11の内面側に一体に形成されたものとなっており、このコイルボビン30内にはシャーシ15の下端面から突出する中空軸部16が嵌まり込んでいるとともに、下カバー11の下面側から差し込まれたビス17が中空軸部16にねじ込まれている。図中18はハウジング10と下カバー11との接合面に配されたパッキン,19はコイルボビン30の端面とシャーシ15との対向面に配されたパッキンである。
【0008】
上記二次電池2は、充電の際にガスを発生することになる陽極側が下方を向けて納められており、この陽極からはガス抜き用であって先端に小さな孔が明けられたパイプ21が突設されて、該パイプ21の先端を中空軸部16内において上記ビス17の先端と対向させている。
シャーシ15と下カバー11とを結合しているとともに軸方向に貫通する孔を備えた前記ビス17は、二次側コイル3におけるコアとしての役目を果たしている上に、前記二次電池2の充電時に二次電池2から放出される可能性のあるガスを外部に出すためのガス流路としての役目も果たしているものである。
【0009】
図2は他例を示しており、ここではコイルボビン30をシャーシ15の下端にシャーシ15と一体に形成している。そしてビス17はコイルボビン30にねじ込むことで下カバー11とシャーシ15とを結合しているとともに前述のガス放出路を形成している。
なお、上記のいずれの例においても、コイルボビン30へのコイル31の巻線を容易とするために、コイルボビン30先端のフランジ部32はコイルボビン30と別体で形成していてもよい。
【0010】
【発明の効果】
以上のように本発明においては、充電器側の一次側コイルとの電磁誘導結合のための二次側コイルを内蔵させるにあたり、機器の器体の内底面と機器の内部部品の保持用であって上記器体内に収められているシャーシとの間に配する二次側コイルのコイルボビンを、器体あるいはシャーシと一体に形成しているために、独立したコイルボビンを必要とせず、位置決め固定のための弾性体なども必要としないものであり、このために部品数が少なくて組立性が向上する上に、二次側コイルの位置精度を高くすることができるために、一次側コイルと二次側コイルとの間の誘導伝達効率を高い値に保つことができる。
【0011】
そして、シャーシと器体との結合用のビスがコイルボビン内を貫通していると、電磁誘導結合性を高めることができるコアの役目をシャーシと器体との結合用のビスに持たせることができるために、専用コアを必要としないにもかかわらず上記効率を更に高めることができる。
【図面の簡単な説明】
【図1】本発明の実施の形態の一例の要部の縦断面図である。
【図2】他例の要部の縦断面図である。
【符号の説明】
1 器体
2 二次電池
3 二次側コイル
15 シャーシ
30 コイルボビン
31 コイル
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rechargeable electric device, and more particularly, to a non-contact type connection to a power source for charging by electromagnetic induction.
[0002]
[Prior art]
Many rechargeable devices perform power supply for charging in a non-contact manner by electromagnetic induction. This is remarkable in a device that needs to have a waterproof structure.
In this case, in order to maintain good electromagnetic induction coupling with the primary coil on the charger side, it is required to accurately arrange the secondary coil at a predetermined position on the body of the rechargeable electric device. Conventionally, however, the secondary coil is positioned and fixed by means such as bringing the coil bobbin of the secondary coil into close contact with the inner surface of the vessel body by urging with an elastic body.
[0003]
[Problems to be solved by the invention]
However, since the secondary coil and the elastic body are incorporated, the number of parts is large, the assemblability is not good, and the positioning accuracy cannot be so high.
The present invention has been made in view of these points, and the object of the present invention is to improve the assemblability and the position accuracy of the secondary side coil in the case of having the secondary side coil for non-contact charging. It is in providing a rechargeable electrical device that can.
[0004]
[Means for Solving the Problems]
Therefore, the present invention relates to a rechargeable electric device having a secondary coil for electromagnetic induction coupling with a primary coil on the charger side, and holds the inner bottom surface of the device body and the internal components of the device. The secondary coil disposed between the chassis and the chassis housed in the container is formed as a coil wound around a coil bobbin formed integrally with the container. Alternatively, the coil bobbin formed integrally with the chassis is formed by winding a coil. Since the coil bobbin of the secondary side coil is integral with the body or the chassis, an independent coil bobbin is not required, and the positional accuracy of the secondary side coil can be increased.
[0005]
And, if the screw for coupling the chassis and the body passes through the inside of the coil bobbin, the coupling screw for coupling the chassis and the body can have the role of a core capable of enhancing electromagnetic induction coupling. it can.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
An example of an embodiment of the present invention will be described. The rechargeable electric device shown in FIG. 1 is an electric razor, and is acontainer 1 including acylindrical housing 10 and a lower cover 11 that closes a lower end opening of thehousing 10. Inside, asecondary battery 2 such as a nickel cadmium battery or a nickel metal hydride battery is housed in a state of being held by achassis 15. Thechassis 15 is inserted into thehousing 10 through the lower end opening of thehousing 10 and fixed to thehousing 10 with screws on the upper end side of thehousing 10. In addition to thesecondary battery 2, a motor (not shown) And a charging circuit board and the like. Thesecondary coil 3 for non-contact charging by electromagnetic induction is housed between the lower end surface of thechassis 15 and the lower cover 11 at the lower end portion in thecontainer 1.
[0007]
Thesecondary coil 3 is configured as acoil bobbin 30 around which acoil 31 is wound. Thecoil bobbin 30 here is integrally formed on the inner surface side of the lower cover 11 of thebody 1. Ahollow shaft 16 protruding from the lower end surface of thechassis 15 is fitted in thecoil bobbin 30, and ascrew 17 inserted from the lower surface side of the lower cover 11 is screwed into thehollow shaft 16. Yes. In the figure, 18 is a packing disposed on the joint surface between thehousing 10 and thelower cover 11, and 19 is a packing disposed on the end surface of thecoil bobbin 30 and thechassis 15.
[0008]
In thesecondary battery 2, the anode side that generates gas at the time of charging is stored facing downward, and apipe 21 for degassing and having a small hole at the tip is provided from the anode. Projectingly, the tip of thepipe 21 is opposed to the tip of thescrew 17 in thehollow shaft portion 16.
Thescrew 17 that connects thechassis 15 and the lower cover 11 and has a hole penetrating in the axial direction serves as a core in thesecondary coil 3 and charges thesecondary battery 2. It also serves as a gas flow path for releasing gas that may be released from thesecondary battery 2 to the outside.
[0009]
FIG. 2 shows another example, in which thecoil bobbin 30 is formed integrally with thechassis 15 at the lower end of thechassis 15. Thescrew 17 is screwed into thecoil bobbin 30 to connect the lower cover 11 and thechassis 15 and to form the aforementioned gas discharge path.
In any of the above examples, theflange portion 32 at the tip of thecoil bobbin 30 may be formed separately from thecoil bobbin 30 in order to facilitate winding of thecoil 31 around thecoil bobbin 30.
[0010]
【The invention's effect】
As described above, according to the present invention, when the secondary coil for electromagnetic induction coupling with the primary coil on the charger side is incorporated, the inner bottom surface of the device body and the internal parts of the device are held. Because the coil bobbin of the secondary coil placed between the chassis and the chassis housed in the container is integrally formed with the container or the chassis, an independent coil bobbin is not required, and positioning is fixed. Therefore, the number of components is small and assembly is improved, and the positional accuracy of the secondary coil can be increased. The induction transmission efficiency with the side coil can be maintained at a high value.
[0011]
And, if the screw for coupling the chassis and the body passes through the inside of the coil bobbin, the coupling screw for coupling the chassis and the body can have the role of a core capable of enhancing electromagnetic induction coupling. In order to do so, the efficiency can be further enhanced despite the fact that no dedicated core is required.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of an essential part of an example of an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of a main part of another example.
[Explanation of symbols]
1Body 2Secondary Battery 3Secondary Coil 15Chassis 30 Coil Bobbin 31 Coil

Claims (3)

Translated fromJapanese
充電器側の一次側コイルとの電磁誘導結合のための二次側コイルを内蔵している充電式電気機器において、機器の器体の内底面と機器の内部部品の保持用であって上記器体内に収められているシャーシとの間に配された上記二次側コイルは、器体と一体に形成されたコイルボビンにコイルを巻回したものとして形成されていることを特徴とする充電式電気機器。In a rechargeable electric device having a secondary coil for electromagnetic inductive coupling with a primary coil on the charger side, for holding the inner bottom surface of the device body and the internal parts of the device, The secondary coil arranged between the chassis housed in the body is formed by winding a coil around a coil bobbin formed integrally with the body, and is a rechargeable electric machine.充電器側の一次側コイルとの電磁誘導結合のための二次側コイルを内蔵している充電式電気機器において、機器の器体の内底面と機器の内部部品の保持用であって上記器体内に収められているシャーシとの間に配された上記二次側コイルは、シャーシと一体に形成されたコイルボビンにコイルを巻回したものとして形成されていることを特徴とする充電式電気機器。In a rechargeable electric device having a secondary coil for electromagnetic inductive coupling with a primary coil on the charger side, for holding the inner bottom surface of the device body and the internal parts of the device, The rechargeable electric device characterized in that the secondary side coil arranged between the chassis housed in the body is formed by winding a coil around a coil bobbin formed integrally with the chassis. .シャーシと器体との結合用のビスがコイルボビン内を貫通していることを特徴とする請求項1または2記載の充電式電気機器。3. A rechargeable electric device according to claim 1, wherein a screw for coupling the chassis and the body passes through the coil bobbin.
JP25266196A1996-09-251996-09-25 Rechargeable electrical equipmentExpired - Fee RelatedJP3648580B2 (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
JP25266196AJP3648580B2 (en)1996-09-251996-09-25 Rechargeable electrical equipment

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
JP25266196AJP3648580B2 (en)1996-09-251996-09-25 Rechargeable electrical equipment

Publications (2)

Publication NumberPublication Date
JPH1097931A JPH1097931A (en)1998-04-14
JP3648580B2true JP3648580B2 (en)2005-05-18

Family

ID=17240473

Family Applications (1)

Application NumberTitlePriority DateFiling Date
JP25266196AExpired - Fee RelatedJP3648580B2 (en)1996-09-251996-09-25 Rechargeable electrical equipment

Country Status (1)

CountryLink
JP (1)JP3648580B2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPH1140207A (en)*1997-07-221999-02-12Sanyo Electric Co LtdPack battery and charging table
JP4036813B2 (en)2003-09-302008-01-23シャープ株式会社 Non-contact power supply system
US7233137B2 (en)2003-09-302007-06-19Sharp Kabushiki KaishaPower supply system
US9130602B2 (en)2006-01-182015-09-08Qualcomm IncorporatedMethod and apparatus for delivering energy to an electrical or electronic device via a wireless link
US9774086B2 (en)2007-03-022017-09-26Qualcomm IncorporatedWireless power apparatus and methods
US9124120B2 (en)2007-06-112015-09-01Qualcomm IncorporatedWireless power system and proximity effects
JP5238472B2 (en)2008-12-162013-07-17株式会社日立製作所 Power transmission device and power reception device
US9601267B2 (en)2013-07-032017-03-21Qualcomm IncorporatedWireless power transmitter with a plurality of magnetic oscillators

Also Published As

Publication numberPublication date
JPH1097931A (en)1998-04-14

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