JP3669211B2

JP3669211B2 - Non-contact charger

Info

Publication number: JP3669211B2
Application number: JP18025399A
Authority: JP
Inventors: 尚紀山口; 和征大内
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 1999-06-25
Filing date: 1999-06-25
Publication date: 2005-07-06
Anticipated expiration: 2019-06-25
Also published as: JP2001016789A

Description

【０００１】
【発明の属する技術分野】
本発明は、非接触充電装置に関し、特に非接触充電装置を構成する本体側のハウジングに関するものである。
【０００２】
【従来の技術】
非接触充電装置においては、充電器内の一次側コイルと本体内の二次側コイルの距離が少なくとも一定である必要がある。即ち、一次側コイルと二次側コイルとの間に介在する充電器及び本体のハウジングの相互接触部の厚さが一定であることが、本体に安定した充電電流を供給する上で重要となる。例えば、前記厚さが場所によって異なっていたりすると、充電回路の充電電流が変化してしまい、本体動作に必要な充電量が得られなかったり、または充電電流が充電する毎に異なって、本体動作時間が都度変化してしまうといった事態が起きる。特に本体のハウジングを縦に２つ割りしたハウジング部品を合わせて本体のハウジングを構成する場合、ハウジングの底部で、接合したハウジング部品間に段差が生じることがあるため、この段差によって、一次側コイルと二次側コイル間の距離にバラツキが生じ、充電電流が変化しやすいという問題があった。
【０００３】
【発明が解決しようとする課題】
本発明は上記の点に鑑みて為されたものであり、本体のハウジングが縦に分割したハウジング部品を合わせてなるものにおいて、非接触充電を確実に行える非接触充電装置を提供することを目的としている。
【０００４】
【課題を解決するための手段】
本発明の請求項１に係る非接触充電装置は、本体１の底部２に二次側コイル６を配設すると共に、充電器３の本体載置部４下に一次側コイル５を配設し、本体１を充電器３の本体載置部４に載置すると、本体載置部４下に配設した一次側コイル５によって本体１の底部２に配設した二次側コイル６が電磁誘導され、本体１内の蓄電池７が充電される非接触充電装置において、本体１のハウジング８が、二次側コイル６を縦断する面で分割された複数のハウジング部品９を組み合わせて構成され、複数のハウジング部品９の内、１つのハウジング部品１０にはその外周壁１１に連続して底壁１２が形成され、該底壁１２の内面１２ａに二次側コイル６が配設され、且つ該底壁１２の外面１２ｂは充電の際、充電器３の本体載置部４との接触面１３となることを特徴とするものである。
【０００５】
また、本発明の請求項２に係る非接触充電装置は、請求項１の構成に加えて、円筒形の本体１のハウジング８が、その軸方向の中心線を含む平面で２分割されたハウジング部品９を組み合わせて構成され、一方のハウジング部品１０にはその外周壁１１に連続して略円形の底壁１２が形成され、該底壁１２の内面１２ａに二次側コイル６が配設され、且つ該底壁１２の外面１２ｂは充電の際、充電器３の本体載置部４との接触面１３となることを特徴とするものである。
【０００６】
また、本発明の請求項３に係る非接触充電装置は、請求項１又は２の構成に加えて、前記底壁１２と他のハウジング部品９との接続部１４を凹凸嵌合部１５で構成したことを特徴とするものである。
【０００７】
また、本発明の請求項４に係る非接触充電装置は、請求項１乃至３のいずれかの構成に加えて、前記接続部１４を円弧状の凹凸嵌合部１５で構成したことを特徴とするものである。
【０００８】
また、本発明の請求項５に係る非接触充電装置は、請求項１乃至４のいずれかの構成に加えて、前記底壁１２の外面１２ｂの中央部１２ｃに凹部１６を設けたことを特徴とするものである。
【０００９】
また、本発明の請求項６に係る非接触充電装置は、請求項１乃至５のいずれかの構成に加えて、前記底壁１２の内面１２ａを配設する二次側コイル６の形状に合わせて凹凸面１７に形成したことを特徴とするものである。
【００１０】
また、本発明の請求項７に係る非接触充電装置は、請求項１乃至６のいずれかの構成に加えて、前記底壁１２の端部１２ｄに他のハウジング部品９を係止するフック１８を設けたことを特徴とするものである。
【００１１】
【発明の実施の形態】
本発明の実施の形態を図１乃至図８に基づいて説明する。尚、以下に述べる本発明の実施の形態では、本発明の非接触充電装置を備えたヘアカッターをその一例として説明する。図１乃至図７はこのヘアカッターの一例を示すものである。このヘアカッターは本体１と、付属の充電器３から構成される。本体１の外殻は上底部８ａ及び下底部８ｂを有する円筒状のハウジング８と、ハウジング８の上底部８ａに接続される刃取り付け台２２から構成される。刃取り付け台２２の傾斜部２２ａを構成する刃ブロック５７には互いに摺接する櫛状の固定刃２０と可動刃２１からなる刃１９がその先端に装着される。そして、この刃ブロック５７は刃取り付け台２２の内部壁２２ａの上面にネジ５８にて取り付けられた刃ブロック固定バネ２３にて固定される。ハウジング８は、その軸方向の中心線を含む平面で、尚且つ刃１９の刃先に平行な平面で分割した２つのハウジング部品９，９を合わせることで形成される。このハウジング８の前半分及び後半分を構成するハウジング部品９，９の内、ハウジング８の前半分を構成するハウジング部品９（以下、これをハウジング部品１０とする）にはその外周壁１１に連続して略円形の底壁１２が形成されている（このハウジング部品１０の底壁１２の詳細は図６に示す）。
【００１２】
ところで、本体１は以下のようにして構成される。まず基台ブロック２６に図７に示すようにモーター２９、スイッチ基台３０、スイッチ金具３１、蓄電池２７、充電回路２８、二次側コイル６、充電表示ランプ５２を配設した後、この基台ブロック２６をハウジング部品１０に配設する。尚、モーター２９の配設時には予めモーター２９の出力軸２９ａを偏芯カム３３の下部穴３３ａに嵌入すると共に、軸４１を偏芯カム３３の上部穴３３ｃに嵌入しておき、偏芯カム３３の鍔部３３ｂをハウジング部品１０の上壁３４の溝３４ａに嵌め込む（図１）。続いてこのハウジング部品１０にハウジング部品９を合わせる。ここでハウジング部品１０の底壁１２とハウジング部品９の縁部５３との接続部１４には凹凸嵌合部１５が形成されており、両者を容易に接続できるようになっている。即ち、図６に示すようにハウジング部品１０の底壁１２の、前側半分１２ｅの半円部の後端部には左右一対の凸部５１が設けてあると共に、底壁１２の後側半分１２ｆの外周部には半円周状の凸部２４が設けてあり、他方、ハウジング部品９の縁部５３には前記凸部５１及び凸部２４が嵌合可能な半円周状の凹部２５が設けてあるため（図５）、これらを嵌合させることで、ハウジング部品１０に対するハウジング部品９の位置決めができると共に、ハウジング部品１０とハウジング部品９との接続を容易に行うことできる。尚、この時、偏芯カム３３の鍔部３３ｂはハウジング部品９の上壁３５に設けた溝３５ａに嵌った状態にある（図１）。また、ハウジング部品１０にハウジング部品９を合わせる際は、モータ２９及び蓄電池２７とハウジング部品９との間に各々クッション５０を入れておく。この後、ハウジング部品１０の穴３６と、基台ブロック２６の穴３７と、ハウジング部品９の穴３８にネジ３９を通して、ハウジング部品１０と、基台ブロック２６と、ハウジング部品９とを完全に固定すると共に、スライド式の電源用スイッチハンドル３２をハウジング１０の前面１０ａに設けた溝部５４に嵌め込み、電源用スイッチハンドル３２の係止片３２ａを基台ブロック２６に配したスイッチ基台３０の係止部３０ａに係止する。続いて刃取り付け台２２をハウジング８の上底部８ａに接続すると同時に、偏芯カム３３の上部穴３３ｃに嵌入した軸４１の上方を可動刃２１に取り付けた駆動子４０の下部穴４０ａに挿通させ、本体１の組み付けを完了する（図２）。
【００１３】
次に充電器３について説明する。充電器３は図３に示すように柱状の本体支持部４６と台座状の本体載置部４からなり、充電器ケース４３でその外殻が形成され、充電器ケース４３の下部からは電源コード５６が導出されている。本体支持部４６の上端には本体ガイド４２が装着され、２つのガイド片４２ａで円筒状の本体１を挟持し、本体１の底壁１２が本体載置部４の正規位置に置かれるようにガイドすると共に、本体１の底壁１２が充電中に振動等で本体載置部４の正規位置からズレたり、本体１が転倒するのを防止する。尚、本体載置部４には本体１の底壁１２を載置する正規位置を示す凸部４ｂが本体載置部４の載置壁４ａの上面に設けてある。充電器ケース４３の下部は開口しており、内部に充電器回路４４及び一次側コイル５を配設した後、底蓋４５にて閉塞される。尚、充電器回路４４内の一次側コイル５は、本体載置部４に設けた正規位置を示す凸部４ｂの中心の直下にそのコイル中心が位置するように配設される。また、この一次側コイル５は、巻線４９をコイルボビン４８に巻き付けることによって構成されるもので、充電器回路４４と接続され、コイルボビン４８の上面が本体載置部４の載置壁４ａの下面に密着するように設けてある（図１）。また、充電器３の底蓋４５の側部にはカットする髪の刈り高さを揃えるアタッチメント５５を置くためのポケット４７が設けてある。
【００１４】
次に本発明の要部であるハウジング部品１０の外周壁１１に連続して形成される略円形の底壁１２について説明する。既述のようにハウジング部品１０の底壁１２の、前側半分１２ｅの半円部の後端部には左右一対の凸部５１が設けてあると共に、底壁１２の後側半分１２ｆの外周部には半円周状の凸部２４が設けてあり、他方、ハウジング部品９の縁部５３には前記凸部５１及び凸部２４が嵌合可能な半円周状の凹部２５が設けてある。このようにハウジング部品１０の底壁１２とハウジング部品９の縁部５３との接続部１４を凹凸嵌合部１５で構成することで、ハウジング部品１０の底壁１２とハウジング部品９との接続を容易に行うことできる。また、上記凹凸嵌合部１５を円弧状に形成することで、ハウジング部品１０の底壁１２が強い力を受けても底壁１２とハウジング部品９の接続部１４の強度を確保することができる。また、図５に示すように巻線４９をコイルボビン４８に巻き付けることによって構成される二次側コイル６は、コイル中心が本体１の中心軸上に位置するように充電回路２８の直下に配設される。そして、ハウジング部品１０の底壁１２の内面１２ａは配設する二次側コイル６、即ち、コイルボビン４８の形状に合わせて凹凸面１７に形成されており、コイルボビン４８の下面が底壁１２の内面１２ａに密着するようにしている。これにより、底壁１２に二次側コイル６を配設する際、二次側コイル６の位置決めを確実に行うことができる。また、底壁１２の外面１２ｂの中央部１２ｃには凹部１６が設けてあるが、これは、本体１を充電器３の本体載置部４に置いた際、充電器３の本体載置部４上に小さな異物があっても、一次側コイル５と二次側コイル６間の距離が一定に保たれるようにするためである。尚、図８に示すように底壁１２の端部１２ｄにハウジング部品９を係止するフック１８を設けると、ハウジング部品９が底壁１２に対して開くのを防止できるので尚良い。
【００１５】
次に本体１を充電する際の動作説明をする。まず充電器３の電源コード５６をコンセントに接続した後、本体１を垂直に立てた状態で、充電器３の本体ガイド４２に挿入し、本体１の中心軸が充電器３の本体載置部４の正規位置にくるようにゆっくりと本体載置部４上に載置する。これと同時に本体載置部４下に配設した一次側コイル５によって本体１の底壁１２の内面１２ａに配設した二次側コイル６が電磁誘導され、本体１内の蓄電池７が充電される。尚、本体１の中心軸が充電器３の本体載置部４の正規位置にある場合、一次側コイル５と二次側コイル６のコイル中心は同一直線（図１のＸ−Ｘ線）上にあるため、効率の良い充電が行われ、一方、本体１の中心軸が充電器３の本体載置部４の正規位置よりズレると、一次側コイル５と二次側コイル６のコイル中心がズレるため、ズレ分に比例して充電効率は低下する。また、充電器３の一次側コイル５と本体１の二次側コイル間の距離Ｔは一定であることが、本体１に安定した充電電流を供給する上で重要となる。例えば、距離Ｔが場所によって異なっていたりすると、充電回路２８の充電電流が変化してしまい、本体動作に必要な充電量が得られなかったり、または充電電流が充電する毎に異なって、本体動作時間が都度変化してしまうといった事態が起きるが、本例のようにハウジング部品１０の外周壁１１に連続して略円形の底壁１２を形成し、底壁１２の内面１２ａに二次側コイル６を配設し、且つ底壁１２の外面１２ｂが充電の際、充電器３の本体載置部４との接触面１３となるようにすることで、従来の縦に２つ割りしたハウジング部品を合わせて本体のハウジングを構成したもののようにハウジングの底部で接合したハウジング部品間に段差が生じるような心配がなく、一次側コイル５と二次側コイル６間の距離Ｔを確実に一定に保つことができるので、本体１に安定した充電電流を供給することができる。
【００１６】
【発明の効果】
本発明の請求項１記載の発明にあっては、従来の縦に２つ割りしたハウジング部品を合わせて本体のハウジングを構成したもののようにハウジングの底部で接合したハウジング部品間に段差が生じるような心配がなく、一次側コイルと二次側コイル間の距離を確実に一定に保つことができるので、本体に安定した充電電流を供給することができる。
【００１７】
また、本発明の請求項２記載の発明にあっては、請求項１記載の発明の効果に加えて、前記効果を奏する構成を容易に実現できる。
【００１８】
また、本発明の請求項３記載の発明にあっては、請求項１又は２に記載の発明の効果に加えて、底壁と他のハウジング部品との接続が容易に行える。
【００１９】
また、本発明の請求項４記載の発明にあっては、請求項１乃至３のいずれかに記載の発明の効果に加えて、底壁が強い力を受けても底壁と他のハウジング部品の接続部の強度を確保することができる。
【００２０】
また、本発明の請求項５記載の発明にあっては、請求項１乃至４のいずれかに記載の発明の効果に加えて、本体を充電器の本体載置部に置く際、充電器の本体載置部上に小さな異物があっても、一次側コイルと二次側コイル間の距離が一定に保たれる。
【００２１】
また、本発明の請求項６記載の発明にあっては、請求項１乃至５のいずれかに記載の発明の効果に加えて、底壁に二次側コイルを配設する際、二次側コイルの位置決めを確実に行うことができる。
【００２２】
また、本発明の請求項７記載の発明にあっては、請求項１乃至６のいずれかに記載の発明の効果に加えて、他のハウジング部品が底壁に対して開くのを防止することができる。
【図面の簡単な説明】
【図１】本発明の実施の形態の一例を示し、充電時のヘアカッターと充電器の縦断面図である。
【図２】同上の（ａ）はヘアーカッターの背面図、（ｂ）はヘアーカッターの側面図、（ｃ）はヘアーカッターの正面図、（ｄ）はヘアカッターの下面図である。
【図３】同上の充電器の正面図である。
【図４】同上の充電時のヘアーカッターと充電器の正面図である。
【図５】同上のヘアーカッターの二次側コイル配設部分の縦断面図である。
【図６】同上の（ａ）はヘアカッターのハウジングを構成する一方のハウジング部品の底壁の下面図、（ｂ）は（ａ）のＡ−Ａ線断面図、（ｃ）は（ｂ）のＢ矢視図である。
【図７】同上のヘアカッターの分解斜視図である。
【図８】本発明の実施の形態の他の例を示し、（ａ）はヘアーカッターの二次側コイル配設部分の縦断面図、（ｂ）はヘアカッターのハウジングを構成する一方のハウジング部品の底壁の下面図、（ｃ）はヘアカッターのハウジングを構成する他方のハウジング部品の縁部の下面図である。
【符号の説明】
１本体
２底部
３充電器
４本体載置部
５一次側コイル
６二次側コイル
７蓄電池
８ハウジング
９ハウジング部品
１０ハウジング部品
１１外周壁
１２底壁
１２ａ内面
１２ｂ外面
１２ｃ中央部
１２ｄ端部
１３接触面
１４接続部
１５凹凸嵌合部
１６凹部
１７凹凸面
１８フック[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a non-contact charging device, and more particularly to a body-side housing constituting the non-contact charging device.
[0002]
[Prior art]
In the non-contact charging device, the distance between the primary coil in the charger and the secondary coil in the main body needs to be at least constant. That is, it is important for supplying a stable charging current to the main body that the thickness of the mutual contact portion between the charger and the main body housing interposed between the primary side coil and the secondary side coil is constant. . For example, if the thickness varies depending on the location, the charging current of the charging circuit changes, and the amount of charge necessary for the main body operation cannot be obtained, or the main body operation differs depending on the charging current. A situation occurs where the time changes each time. In particular, when a housing of the main body is configured by combining two housing parts vertically divided into the main body housing, a step may occur between the joined housing parts at the bottom of the housing. There is a problem that the distance between the secondary coil and the secondary coil varies, and the charging current easily changes.
[0003]
[Problems to be solved by the invention]
The present invention has been made in view of the above points, and an object of the present invention is to provide a non-contact charging device that can reliably perform non-contact charging in a case where a housing of a main body is combined with vertically divided housing parts. It is said.
[0004]
[Means for Solving the Problems]
In the non-contact charging apparatus according to claim 1 of the present invention, the secondary coil 6 is disposed at the bottom 2 of the main body 1 and the primary coil 5 is disposed below the main body mounting portion 4 of the charger 3. When the main body 1 is placed on the main body placing portion 4 of the charger 3, the secondary side coil 6 disposed on the bottom portion 2 of the main body 1 is electromagnetically induced by the primary side coil 5 disposed below the main body placing portion 4. In the non-contact charging apparatus in which the storage battery 7 in the main body 1 is charged, the housing 8 of the main body 1 is configured by combining a plurality of housing parts 9 divided by a surface that cuts through the secondary side coil 6. Among the housing parts 9, one housing part 10 has a bottom wall 12 formed continuously to the outer peripheral wall 11, a secondary coil 6 is disposed on the inner surface 12a of the bottom wall 12, and the bottom The outer surface 12b of the wall 12 is a contact surface 1 with the main body mounting portion 4 of the charger 3 during charging. And it is characterized in that a.
[0005]
According to a second aspect of the present invention, in addition to the structure of the first aspect, the housing 8 of the cylindrical main body 1 is divided into two by a plane including the axial center line. A part 9 is combined, and one housing part 10 is formed with a substantially circular bottom wall 12 continuous with an outer peripheral wall 11 thereof, and a secondary coil 6 is disposed on an inner surface 12a of the bottom wall 12. And the outer surface 12b of this bottom wall 12 becomes the contact surface 13 with the main body mounting part 4 of the charger 3 in the case of charge, It is characterized by the above-mentioned.
[0006]
In addition to the configuration of claim 1 or 2, the contactless charging device according to claim 3 of the present invention is configured such that the connection portion 14 between the bottom wall 12 and the other housing part 9 is an uneven fitting portion 15. It is characterized by that.
[0007]
According to a fourth aspect of the present invention, in addition to the structure of any one of the first to third aspects, the connection portion 14 is configured by an arcuate uneven fitting portion 15. To do.
[0008]
Further, the non-contact charging device according to claim 5 of the present invention is characterized in that, in addition to the configuration of any of claims 1 to 4, a recess 16 is provided in the central portion 12c of the outer surface 12b of the bottom wall 12. It is what.
[0009]
According to a sixth aspect of the present invention, in addition to the configuration of any of the first to fifth aspects, the non-contact charging apparatus is adapted to the shape of the secondary coil 6 on which the inner surface 12a of the bottom wall 12 is disposed. It is characterized by being formed on the uneven surface 17.
[0010]
In addition to the structure of any one of claims 1 to 6, the non-contact charging device according to claim 7 of the present invention includes a hook 18 for locking another housing component 9 to the end 12d of the bottom wall 12. Is provided.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. In the embodiment of the present invention described below, a hair cutter provided with the non-contact charging device of the present invention will be described as an example. 1 to 7 show an example of this hair cutter. This hair cutter comprises a main body 1 and an attached charger 3. The outer shell of the main body 1 includes a cylindrical housing 8 having an upper bottom portion 8a and a lower bottom portion 8b, and a blade mounting base 22 connected to the upper bottom portion 8a of the housing 8. A blade 19 comprising a comb-shaped fixed blade 20 and a movable blade 21 that are in sliding contact with each other is mounted on the tip of the blade block 57 that constitutes the inclined portion 22a of the blade mounting base 22. The blade block 57 is fixed by a blade block fixing spring 23 attached to the upper surface of the inner wall 22 a of the blade mounting base 22 with a screw 58. The housing 8 is formed by combining two housing parts 9 and 9 which are divided by a plane including the axial center line and a plane parallel to the cutting edge of the blade 19. Of the housing parts 9 and 9 constituting the front half and the rear half of the housing 8, the housing part 9 constituting the front half of the housing 8 (hereinafter referred to as the housing part 10) is connected to the outer peripheral wall 11 thereof. Thus, a substantially circular bottom wall 12 is formed (details of the bottom wall 12 of the housing part 10 are shown in FIG. 6).
[0012]
By the way, the main body 1 is configured as follows. First, as shown in FIG. 7, a motor 29, a switch base 30, a switch fitting 31, a storage battery 27, a charging circuit 28, a secondary coil 6, and a charging display lamp 52 are disposed on the base block 26, A block 26 is disposed on the housing part 10. When the motor 29 is disposed, the output shaft 29a of the motor 29 is inserted into the lower hole 33a of the eccentric cam 33 and the shaft 41 is inserted into the upper hole 33c of the eccentric cam 33 in advance. Is fitted into the groove 34a of the upper wall 34 of the housing part 10 (FIG. 1). Subsequently, the housing part 9 is aligned with the housing part 10. Here, a concavity and convexity fitting portion 15 is formed at the connection portion 14 between the bottom wall 12 of the housing component 10 and the edge portion 53 of the housing component 9, so that both can be easily connected. That is, as shown in FIG. 6, a pair of left and right convex portions 51 are provided at the rear end of the semicircular portion of the front half 12e of the bottom wall 12 of the housing part 10, and the rear half 12f of the bottom wall 12 is provided. A semicircular convex portion 24 is provided on the outer peripheral portion of the housing part 9. On the other hand, a semicircular concave portion 25 in which the convex portion 51 and the convex portion 24 can be fitted is provided on the edge 53 of the housing component 9. Since they are provided (FIG. 5), the housing parts 9 can be positioned with respect to the housing parts 10 by fitting them, and the housing parts 10 and the housing parts 9 can be easily connected. At this time, the flange portion 33b of the eccentric cam 33 is in a state of being fitted into a groove 35a provided in the upper wall 35 of the housing component 9 (FIG. 1). Further, when the housing part 9 is aligned with the housing part 10, the cushions 50 are respectively inserted between the motor 29 and the storage battery 27 and the housing part 9. Thereafter, the housing part 10, the base block 26, and the housing part 9 are completely fixed by passing the screw 39 through the hole 36 of the housing part 10, the hole 37 of the base block 26, and the hole 38 of the housing part 9. At the same time, the slide type power switch handle 32 is fitted into the groove 54 provided on the front surface 10 a of the housing 10, and the switch base 30 having the locking piece 32 a of the power switch handle 32 arranged on the base block 26 is locked. Locks to the portion 30a. Subsequently, the blade mounting base 22 is connected to the upper bottom portion 8a of the housing 8 and at the same time, the upper portion of the shaft 41 fitted into the upper hole 33c of the eccentric cam 33 is inserted into the lower hole 40a of the driver 40 attached to the movable blade 21. Then, the assembly of the main body 1 is completed (FIG. 2).
[0013]
Next, the charger 3 will be described. As shown in FIG. 3, the charger 3 includes a columnar main body support portion 46 and a pedestal main body mounting portion 4, and an outer shell is formed by the charger case 43. 56 is derived. A main body guide 42 is attached to the upper end of the main body support portion 46, and the cylindrical main body 1 is sandwiched between two guide pieces 42 a so that the bottom wall 12 of the main body 1 is placed at a normal position of the main body placement portion 4. In addition to guiding, the bottom wall 12 of the main body 1 is prevented from being displaced from the normal position of the main body mounting portion 4 due to vibration or the like during charging, or the main body 1 is toppled. The main body mounting portion 4 is provided with a convex portion 4 b on the upper surface of the mounting wall 4 a of the main body mounting portion 4, which indicates a normal position for mounting the bottom wall 12 of the main body 1. A lower portion of the charger case 43 is open, and after the charger circuit 44 and the primary coil 5 are disposed therein, the charger case 43 is closed by the bottom cover 45. The primary coil 5 in the charger circuit 44 is disposed so that the coil center is located immediately below the center of the convex portion 4 b indicating the normal position provided in the main body mounting portion 4. The primary coil 5 is configured by winding a winding 49 around a coil bobbin 48, and is connected to a charger circuit 44, and the upper surface of the coil bobbin 48 is the lower surface of the mounting wall 4 a of the main body mounting unit 4. (FIG. 1). Further, a pocket 47 for placing an attachment 55 for aligning the cutting height of the hair to be cut is provided on the side of the bottom cover 45 of the charger 3.
[0014]
Next, the substantially circular bottom wall 12 formed continuously from the outer peripheral wall 11 of the housing component 10 which is the main part of the present invention will be described. As described above, a pair of left and right convex portions 51 are provided at the rear end portion of the front half 12e of the bottom wall 12 of the housing part 10, and the outer peripheral portion of the rear half 12f of the bottom wall 12 is provided. Is provided with a semicircular convex portion 24, while an edge 53 of the housing component 9 is provided with a semicircular concave portion 25 into which the convex portion 51 and the convex portion 24 can be fitted. . In this way, the connecting portion 14 between the bottom wall 12 of the housing component 10 and the edge 53 of the housing component 9 is configured by the concave and convex fitting portion 15, thereby connecting the bottom wall 12 of the housing component 10 and the housing component 9. It can be done easily. Further, by forming the concave / convex fitting portion 15 in an arc shape, the strength of the connecting portion 14 between the bottom wall 12 and the housing component 9 can be ensured even when the bottom wall 12 of the housing component 10 receives a strong force. . Further, as shown in FIG. 5, the secondary side coil 6 configured by winding the winding 49 around the coil bobbin 48 is disposed immediately below the charging circuit 28 so that the coil center is located on the central axis of the main body 1. Is done. The inner surface 12 a of the bottom wall 12 of the housing part 10 is formed on the concave and convex surface 17 in accordance with the shape of the secondary coil 6 to be arranged, that is, the coil bobbin 48, and the lower surface of the coil bobbin 48 is the inner surface of the bottom wall 12. 12a is closely attached. Thereby, when the secondary coil 6 is disposed on the bottom wall 12, the secondary coil 6 can be positioned reliably. Moreover, although the recessed part 16 is provided in the center part 12c of the outer surface 12b of the bottom wall 12, when the main body 1 is set | placed on the main body mounting part 4 of the charger 3, the main body mounting part of the charger 3 is provided. This is because the distance between the primary side coil 5 and the secondary side coil 6 is kept constant even if there is a small foreign matter on 4. In addition, as shown in FIG. 8, when the hook 18 which latches the housing component 9 is provided in the edge part 12d of the bottom wall 12, it is still more preferable since it can prevent the housing component 9 opening with respect to the bottom wall 12. FIG.
[0015]
Next, the operation for charging the main body 1 will be described. First, after the power cord 56 of the charger 3 is connected to the outlet, the main body 1 is inserted in the main body guide 42 of the charger 3 in a state where the main body 1 stands vertically, and the central axis of the main body 1 is the main body mounting portion of the charger 3. 4 is slowly placed on the main body placing portion 4 so as to come to the normal position 4. At the same time, the secondary coil 6 disposed on the inner surface 12a of the bottom wall 12 of the main body 1 is electromagnetically induced by the primary coil 5 disposed under the main body mounting portion 4, and the storage battery 7 in the main body 1 is charged. The When the central axis of the main body 1 is in the normal position of the main body mounting portion 4 of the charger 3, the coil centers of the primary side coil 5 and the secondary side coil 6 are on the same straight line (XX line in FIG. 1). Therefore, efficient charging is performed. On the other hand, when the central axis of the main body 1 deviates from the normal position of the main body mounting portion 4 of the charger 3, the coil centers of the primary side coil 5 and the secondary side coil 6 are shifted. Due to the deviation, the charging efficiency decreases in proportion to the deviation. In addition, it is important for supplying a stable charging current to the main body 1 that the distance T between the primary side coil 5 of the charger 3 and the secondary side coil of the main body 1 is constant. For example, if the distance T varies from place to place, the charging current of the charging circuit 28 changes, and the amount of charge necessary for the main body operation cannot be obtained, or the main body operation differs depending on the charging current charged. Although a situation occurs in which the time changes every time, a substantially circular bottom wall 12 is formed continuously with the outer peripheral wall 11 of the housing part 10 as in this example, and the secondary coil is formed on the inner surface 12a of the bottom wall 12. 6 and the outer surface 12b of the bottom wall 12 becomes the contact surface 13 with the main body mounting portion 4 of the charger 3 when charging, so that the conventional housing part divided into two vertically The distance T between the primary side coil 5 and the secondary side coil 6 can be made constant without worrying about the difference in level between the housing parts joined at the bottom of the housing as in the case of the main body housing. To keep Since it is possible to supply a stable charging current to the main body 1.
[0016]
【The invention's effect】
In the first aspect of the present invention, there is a step between the housing parts joined at the bottom of the housing, such as the conventional housing part divided into two vertically divided housing parts. Since the distance between the primary side coil and the secondary side coil can be reliably kept constant, a stable charging current can be supplied to the main body.
[0017]
In addition, in the invention described in claim 2 of the present invention, in addition to the effect of the invention described in claim 1, a configuration that exhibits the effect can be easily realized.
[0018]
In the invention according to claim 3 of the present invention, in addition to the effect of the invention according to claim 1 or 2, the bottom wall and other housing parts can be easily connected.
[0019]
Further, in the invention according to claim 4 of the present invention, in addition to the effect of the invention according to any one of claims 1 to 3, even if the bottom wall receives a strong force, the bottom wall and other housing parts The strength of the connecting portion can be ensured.
[0020]
Moreover, in invention of Claim 5 of this invention, in addition to the effect of the invention in any one of Claims 1 thru | or 4, when placing a main body in the main body mounting part of a charger, Even if there is a small foreign object on the main body mounting portion, the distance between the primary side coil and the secondary side coil is kept constant.
[0021]
In the invention according to claim 6 of the present invention, in addition to the effect of the invention according to any one of claims 1 to 5, when the secondary coil is disposed on the bottom wall, the secondary side The coil can be positioned reliably.
[0022]
In addition, in the invention according to claim 7 of the present invention, in addition to the effect of the invention according to any one of claims 1 to 6, it is possible to prevent other housing parts from opening to the bottom wall. Can do.
[Brief description of the drawings]
FIG. 1 shows an example of an embodiment of the present invention and is a longitudinal sectional view of a hair cutter and a charger during charging.
2A is a rear view of the hair cutter, FIG. 2B is a side view of the hair cutter, FIG. 2C is a front view of the hair cutter, and FIG. 2D is a bottom view of the hair cutter.
FIG. 3 is a front view of the charger.
FIG. 4 is a front view of the hair cutter and the charger at the same time as charging.
FIG. 5 is a longitudinal sectional view of a secondary coil arrangement portion of the hair cutter of the above.
6A is a bottom view of the bottom wall of one housing part constituting the housing of the hair cutter, FIG. 6B is a sectional view taken along the line AA of FIG. 6A, and FIG. FIG.
FIG. 7 is an exploded perspective view of the above hair cutter.
FIGS. 8A and 8B show another example of the embodiment of the present invention, in which FIG. 8A is a longitudinal sectional view of a secondary coil arrangement portion of the hair cutter, and FIG. 8B is one housing constituting the housing of the hair cutter. The bottom view of the bottom wall of components, (c) is a bottom view of the edge of the other housing component which comprises the housing of a hair cutter.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main body 2 Bottom part 3 Charger 4 Main body mounting part 5 Primary side coil 6 Secondary side coil 7 Storage battery 8 Housing 9 Housing part 10 Housing part 11 Outer wall 12 Bottom wall 12a Inner surface 12b Outer surface 12c Central part 12d End part 13 Contact surface 14 Connection 15 Concavity and convexity fitting portion 16 Concavity 17 Concavity and convexity surface 18 Hook

Claims

A secondary coil is disposed at the bottom of the main body, a primary coil is disposed under the main body placement portion of the charger, and the main body is placed under the main body placement portion of the charger. In the non-contact charging device in which the secondary coil disposed at the bottom of the main body is electromagnetically induced by the provided primary side coil and the storage battery in the main body is charged, the housing of the main body is a surface that cuts the secondary side coil vertically A plurality of divided housing parts are combined. Among the plurality of housing parts, one housing part has a bottom wall formed continuously with the outer peripheral wall, and a secondary coil is formed on the inner surface of the bottom wall. A non-contact charging apparatus, wherein the outer surface of the bottom wall is a contact surface with the main body mounting portion of the charger during charging.

A cylindrical main body housing is configured by combining two housing parts divided in a plane including the axial center line, and one housing part is formed with a substantially circular bottom wall continuous to its outer peripheral wall. The secondary side coil is disposed on the inner surface of the bottom wall, and the outer surface of the bottom wall becomes a contact surface with the main body mounting portion of the charger during charging. Non-contact charging device.

The contactless charging device according to claim 1 or 2, wherein a connecting portion between the bottom wall and another housing part is configured by a concave-convex fitting portion.

The contactless charging device according to any one of claims 1 to 3, wherein the connection portion is configured by an arc-shaped uneven fitting portion.

The contactless charging apparatus according to claim 1, wherein a concave portion is provided in a central portion of the outer surface of the bottom wall.

The non-contact charging device according to claim 1, wherein the non-contact charging device is formed in a concavo-convex surface in accordance with a shape of a secondary side coil on which an inner surface of the bottom wall is disposed.

The non-contact charging device according to claim 1, wherein a hook for locking another housing part is provided at an end of the bottom wall.