JP4285028B2 - Rotating mechanism and electronic flash device having the same - Google Patents

Rotating mechanism and electronic flash device having the same Download PDF

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Publication number
JP4285028B2
JP4285028B2 JP2003052852A JP2003052852A JP4285028B2 JP 4285028 B2 JP4285028 B2 JP 4285028B2 JP 2003052852 A JP2003052852 A JP 2003052852A JP 2003052852 A JP2003052852 A JP 2003052852A JP 4285028 B2 JP4285028 B2 JP 4285028B2
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Japan
Prior art keywords
locking
rotating
rotation
plate
locking plate
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JP2004264403A (en
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峰史 開本
啓 岩本
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Panasonic Corp
Panasonic Holdings Corp
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Panasonic Corp
Matsushita Electric Industrial Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、本体部に対する回転部の回転角度範囲を設定する回転機構及びこれをいわゆるバウンス機能(照明光の照射方向を可変できる機能)として備えた電子閃光装置に関する。
【0002】
【従来の技術】
電子閃光装置(ストロボ装置)は、通常、発光部の発光窓が被写体に正対する状態でカメラに装着されるが、バウンス機能を備えた電子閃光装置は、この状態を基準として発光部を水平(左右)方向、及び垂直(上下)方向に回転できるため、発光窓から射出される照明光の照射方向を被写体に対して水平あるいは垂直に可変できるように構成されている。
【0003】
近年は、アマチュアの写真家においても、プロの写真家が通常スタジオ内等で行っているバウンスライティング撮影を行えるように電子閃光装置が望まれているが、この種の電子閃光装置としては、特許文献1や特許文献2に記載されたものが公知である。
【0004】
特許文献1に記載されたものは、本体部と発光部とが回転部を介して連結され、回転部が本体部に対して左右方向に回転することにより、発光部が本体部に対して左右方向に回転するものであって、本体部に設けられた係止部と回転部に設けられた係止部とが当接することにより、それ以上の回転部の回転が規制され、回転部の回転角度範囲が設定されるようになっている。
【0005】
特許文献2に記載されたものは、本体部と発光部とが回転部を介して連結され、回転部が本体部に対して左右方向に回転することにより、発光部が本体部に対して左右方向に回転するものであって、本体部及び回転部に円弧溝が形成され、両円弧溝に跨って摺動部材を配置し、両円弧溝の端部が摺動部材に当接することにより、それ以上の回転部の回転が規制され、回転部の回転角度範囲が設定されるようになっている。
【0006】
【特許文献1】
実開昭55−128019号公報
【特許文献2】
特開昭55−96927号公報
【0007】
【発明が解決しようとする課題】
しかしながら、特許文献1に記載されたものは、機構が簡単な点でメリットがあるが、回転部の回転方向における本体部の係止部の幅サイズ分だけ回転角度範囲が狭められるため、360度の回転角度範囲あるいは正対位置を基準とした左右それぞれ180度の回転角度範囲を実現することが不可能である。
【0008】
一方、特許文献2に記載されたものは、上記回転角度範囲を実現することができる点でメリットがあるが、左右回転方向のねじりによる静圧荷重に対する強度を増すために、摺動部材の厚み、幅等を大きくする必要があり、これに伴い、円弧溝も幅等を拡大しなければならなくなる。即ち、機構を構成する容量が増大し、ストロボ装置自体の小型化に対応できなくなる可能性が生じてくる。
【0009】
加えて、特許文献2に記載されたものは、本体部及び可動部の両円弧溝に摺動部材を挟み込まなければならないが、この作業が煩雑で、組立性が悪い構造となっている。
【0010】
そこで、本発明は、上記問題に鑑みてなされたもので、より広範な回転角度範囲を実現することができ、且つ構造の簡素化を図ることができる回転機構及びこれを備えた電子閃光装置を提供することを課題とする。
【0011】
【課題を解決するための手段】
本発明に係る回転機構は、上記課題を解決するためになされたもので、本体部と、前記本体部に対して回転可能な回転部と、前記回転部の回転に対応して前記本体部に設けられたガイド溝内を可動する係止板を備え、前記係止板の係止部と前記回転部の係止部とが当接することにより、回転部の回転角度範囲が設定されるように構成されたことを特徴とする。
【0012】
本願の請求項に記載された構成からなる回転機構によれば、回転部の回転に伴って係止板及び/又は回転部の係止部がガイド溝によって所定量だけ移動し、これをもって回転部をさらに回転させることができるため、回転部の回転角度範囲がより広く設定される。
【0013】
また、上記構成からなる回転機構は、請求項2記載の如く、前記係止板が前記回転部の係止部との当接に伴って、前記回転部の回転方向へ前記ガイド溝内を直進可動する構成や、請求項記載の如く、前記回転部に取付られた回転板が前記回転部の回転方向に所定角度量可動して、前記回転部の係止部の係止位置を可動させる構成を採用することができる。
【0014】
特に、係止板が直進可動である場合は、請求項3及び4記載の如く、前記係止板の移動方向の両側に、該係止と当接する一対の係止部を備え、更に本体部の係止部は、前記一対の係止部の中間位置となるように付勢される構成を採用することができる。かかる構成からなる回転機構によれば、一対の係止部によって係止板の移動範囲が設定されるのであるが、回転部の係止部による係止板の当接規制が解除されると、係止板は付勢によって中間位置に移動する。これにより、回転部の回転方向を切り替える際に不具合が生じるのを防止したり、一対の係止部に当接する係止板がねじりによって破損等するのを防止することができる。
【0015】
そして、これらの回転機構を電子閃光装置に組み込むことにより、広範なバウンス角を実現する電子閃光装置を提供することができる。
【0016】
【発明の実施の形態】
以下、本発明の一実施形態について、図面を用いて説明する。
【0017】
図1に示す如く、本実施形態に係る電子閃光装置は、本体部1と、該本体部1に対して水平(左右)方向に回転可能な中間部8と、該中間部8に対して垂直(上下)方向に回転可能な発光部13とを備え、該発光部13が本体部1に対して直交二軸で回転することにより、発光部13の発光窓14から射出される照明光の照射方向を被写体に対して水平あるいは垂直に可変できる構成である。
【0018】
本体部1は、互いに組み合わされる一対のモールド(正面モールド2及び背面モールド3)内に各種の電気回路や電源ユニット(何れも図示しない)を内装したものであり、例えばカメラ(図示しない)に着脱自在に取り付けられる部分である。
【0019】
中間部8は、互いに組み合わされる一対のモールド(正面モールド9及び背面モールド10)内に発光部13からのリード線(図示しない)を内装したものであり、本発明の回転部を構成する。
【0020】
そして、中間部8の下面には、断面略円形状の突起部8a(正面モールド9の断面略半円形状の突起部9aと背面モールド10の断面略半円形状の突起部10aとの組み合わせ)が形成される一方、本体部1の上面には、突起部8aと略同一形状の円孔1a(正面モールド2の半円孔(図示しない)と背面モールド3の半円孔3aとの組み合わせ)が形成され、突起部8aが円孔1a内を軸回りに摺動することで、中間部8が本体部1に対して水平方向に回転する。
【0021】
尚、突起部8aには孔が形成され、該孔を介してリード線を本体部1の電気回路に接続するため、リード線が外部に露呈することはない。また、突起部10aの外周の一部に径方向の溝8cが形成され、該溝8cにバネ及びクリック突子(何れも図示しない)が内装される一方、円孔1aの内周の所定角度位置に適宜の係入凹部(図示しない)が形成され、クリック突子が何れかの係入凹部に係入することで、本体部1に対する中間部8の位置決めがなされる。
【0022】
また、突起部8aには、回転板11が取り付けられている。具体的には、突起部8aは、断面非円形状の突起部8bを備える一方、回転板11には、突起部8bと略同一形状の孔が形成され、回転板11の孔に突起部8bを挿入して突起部8aに対する回転板11の回りが規制された状態で、回転板11がビス12でもって突起部8aに固定される。
【0023】
回転板11は、略円形状を有し、それが突起部8a(円孔1a)よりも大径に形成されている。従って、回転板11は、突起部8aの軸方向における該突起部8aの円孔1aからの抜け止めとして作用する。
【0024】
また、回転板11は、係合部11aを備えている。該係合部11aは、回転板11の外周の一部から突出する帯状の舌片を約90度に折り曲げたもので、中間部8の回転角度範囲を設定する手段の一部を構成する。
【0025】
そして、回転板11の係合部11aに対応して、本体部1にも、中間部8の回転角度範囲を設定する手段の一部として、係止板4と係止板の係合部4aが設けられている。該係合部4aは、略長方形状を有する係止板4の長辺中央部から突出する帯状の舌片を約90度に折り曲げたもので、中間部8の係止部11aと当接し得る位置に配置される。具体的には、係止部4aは、係止板4が本体部1内(背面モールド3の内面)に設けられたガイド溝5に配置されることにより、配置される。
【0026】
ガイド溝5は、モールド3の内面から囲い突起部が突出することにより、係止板4と同様、略長方形状に形成されるが、その長片は、係止板4の長辺よりも所定量だけ長いなっており、その結果、係止板4(係止部4a)は、中間部の回転軸と直交する方向に所定量だけ可動となっている。
【0027】
また、ガイド溝5の近傍であって二箇所位置には、係止板4のスライド方向で所定の間隔を有する一対の係止部6,6が設けられている。該係止部6,6は、係止板4のスライドに伴って移動する係止部4aの移動線上に位置することで、係止部4aは、両係止部6,6間で移動する。即ち、係止部4aは、各係止部6と当接することで、それ以上の移動が規制され、移動範囲が設定される。
【0028】
尚、係止部4aの高さ寸法は、係止部6の高さ寸法よりも高くなっており、係止部6の側面全面と係止部4aの先端部を除く側面とが面当接するようになっている。また、ガイド溝5を構成する囲い突起部には、カバー7が接合され、係止板4がガイド溝5から離脱しないようになっている。
【0029】
本実施形態に係る電子閃光装置は、以上の構成からなり、以下、その使用方法について図2に基づき説明する。
【0030】
図2(イ)は、発光部13の発光窓14が被写体に正対する状態を示し、図2(ロ)は、発光部13が正対状態から右回り(正面から見て)に180度回転した状態を示す。図2(イ)に示す如く、正対状態では、中間部8の係止部11aは、係止板4の係止部4aから最も離間した対極の位置関係にある。即ち、中間部8の回転中心と中間部8の係止部11aの幅中心とを結ぶ線は、係止板4の係止板4のスライド面と直交した関係にある。
【0031】
係止板4の係止部4aと中間部8の係止部11aとは離間しているため、中間部8(発光部13)は、回転可能である。そこで、右回りに中間部8を回転する。すると、一対の係止部6,6の中間位置は、中間部8の回転中心を中心として中間部8の係止部11aの幅中心と180度の関係に設定されているため、中間部8の係止部11aは、中間部8が180度回転するまでに、幅中心が一対の係止部6,6の中間位置と一致している係止板4の係止部4aに当接する。
【0032】
しかしながら、係止板4の係止部4aは、左側に移動できるので、回転部は右回りに180度の回転角度範囲を実現することができる。中間部8が180度回転すると、中間部8の係止部11aは、係止板4の係止部4aを介して本体部1の係止部6と当接するため、これ以上の回転は規制される。
【0033】
今度は、左回りに中間部8を回転する。すると、中間部8の係止部11aは、中間部8が360度回転するまでに、本体部1の左側の係止部6と当接している係止板4の係止部4aに当接する。尚、本体部1の係止部6は、係止板4の係止部4aよりも低く形成されているため、係止部4aの先端は、突出した状態であり、ここに中間部8の係止部11aが当接するものであって、該係止部11aが本体部1の係止部6と干渉するようなことはない。
【0034】
しかる後、係止板4の係止部4aは、右側に移動できるので、左回りに360度の回転角度範囲を実現することができる。中間部8が360度回転すると、中間部8の係止部11aは、係止板4の係止部4aを介して本体部1の反対側の係止部6と当接するため、これ以上の回転は規制される。
【0035】
このような動作は、全く逆に行うこともできる。即ち、正対状態から左回りに中間部8を回転すれば、左回りに180度の回転角度範囲を実現することができ、そこから逆(右回り)に中間部8を回転すれば、右回りに360度の回転角度範囲を実現することができる。
【0036】
このように、本実施形態に係る電子閃光装置によれば、従来にない簡単な機構で広範な回転角度範囲を実現することができるのである。
【0037】
尚、本発明は、上記実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲で種々の変更が可能である。
【0038】
例えば、上記実施形態においては、係止部4a(係止板4)の移動を中間部8の回転力をもって実現していたが、図3(イ)に示すように、係止板4の両端にバネ15等の弾性部材を介在させ、係止部4aを常にニュートラルな位置(正対状態)に付勢するようにしてもよい。その結果、本体部1の係止部6との干渉を避け、係止板4の係止部4aとのみ中間部8の係止部11aとの当接を考慮することを要せず、本体部1の係止部6を係止部4aと同じ高さにして係止部6の側面と係止部4aの側面とを全面で面当接させることが可能となり、これにより、係止板4の係止部4aのねじりに対する強度を増すことができ、該係止部4aの破損、折れ曲がり等を好適に防止することができる。
【0039】
また、上記実施形態においては、係止板4の係止部4aが可動に構成されているが、図3(ロ)に示すように、本体部1には固定の係止部16を設け、中間部8の係止部11aを所定量だけ可動とすることも可能である。具体的には、回転板11に適宜の円弧状のガイド溝11bを形成し、中間部8(の突起部8a)には、ガイド溝11bに挿入される突起状のガイド部8bを設け、中間部8に対して回転板11が回転軸回りに所定角度量だけ可動とする構成である。尚、ガイド部8bには、ビス17を取り付けてこのビス17の頭でもって回転板11の突起部8aからの抜け防止としている。
【0040】
また、係止板4の係止部4a又は中間部8の係止部11aの一方のみを可動とするのではなく、両方可動とするようにしてもよい。
【0041】
また、上記実施形態においては、中間部8の係止部11aは、回転板11に備えるようにしているが、係止部11aを中間部8(のモールド9,10)に直接設けるようにしてもよい。同様に、図3(ロ)のような、本体部1の係止部16を固定とする場合は、この係止部16は、本体部1(のモールド2,3)に直接設けるのではなく、他の部材に設けたものを本体部1に取り付けるようにしてもよい。
【0042】
また、上記実施形態においては、係止板4の係止部4aの両側に一対の係止部6,6を配置し、これによって係止板4の係止部4aの移動範囲を設定するようにしているが、例えば図3(ロ)のような構成、即ち係止板4に移動方向に沿ったガイド溝を形成し、これに本体部1に突設されたガイド体8bを挿入し、ガイド体8bによって係止板4の移動範囲を設定するようにしてもよいし、逆に、図3(ロ)の構成は、図1〜図2のような構成、即ち中間部8の係止部11aの両側に一対の係止部を配置し、これによって中間部8の係止部11aの移動範囲を設定するようにしてもよい。
【0043】
その他、ガイド溝5、係止板4、係止部4a、係止部6、回転板11、係止部11aなどの具体的形状、寸法、配置は設計的事項である。
【0044】
また、上述してきた回転機構は、電子閃光装置に限定されるものではなく、例えば、液晶画面によって構成されるデジタルビデオカメラやデジタルカメラのファインダなどにも適用することができる。
【0045】
【発明の効果】
以上の如く、本発明に係る回転機構は、本体部の係止部及び/又は回転部の係止部が回転部の回転に対応する方向に所定量で可動なため、より広範な回転角度範囲を実現することができ、しかも、構造が簡単であるため、装置の小型化を実現することができる。
【図面の簡単な説明】
【図1】本発明の一実施形態に係る電子閃光装置の分解斜視図
【図2】同実施形態に係る電子閃光装置であって、
(イ)は、発光部が正面を向いた正対状態の一部構成省略斜視図
(ロ)は、発光部が180度回転した状態の一部構成省略斜視図
【図3】他実施形態に係る電子閃光装置であって、
(イ)は、係止板がバネで中立位置に付勢される構成としたものの要部斜視図
(ロ)は、回転板が可動な構成としたものの要部斜視図
【符号の説明】
1 本体部
4 係止板
4a 係合部
6 係止部
8 中間部(回転部)
11 回転板
11a 係合部
13 発光部
15 バネ(弾性部材)
16 係止部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotation mechanism that sets a rotation angle range of a rotation unit with respect to a main body unit and an electronic flash device that includes the rotation mechanism as a so-called bounce function (function that can change the irradiation direction of illumination light).
[0002]
[Prior art]
An electronic flash device (strobe device) is usually mounted on a camera with the light emitting window of the light emitting unit facing the subject. However, an electronic flash device equipped with a bounce function has a horizontal ( Since it can rotate in the (left / right) direction and the vertical (up / down) direction, the irradiation direction of the illumination light emitted from the light emitting window can be varied horizontally or vertically with respect to the subject.
[0003]
In recent years, even for amateur photographers, an electronic flash device has been desired so that professional photographers can perform bounce lighting photography normally performed in studios, etc., but this type of electronic flash device is patented. Those described in Document 1 and Patent Document 2 are known.
[0004]
In Patent Document 1, the main body and the light emitting part are connected via a rotating part, and the rotating part rotates in the left-right direction with respect to the main body so that the light emitting part is left and right with respect to the main body. Rotation of the rotating part is restricted by the contact of the engaging part provided in the main body part and the engaging part provided in the rotating part. An angle range is set.
[0005]
In Patent Document 2, the main body and the light emitting part are connected via a rotating part, and the rotating part rotates in the left-right direction with respect to the main body so that the light emitting part is left and right with respect to the main body. In the direction of rotation, arc grooves are formed in the main body part and the rotation part, the sliding member is disposed across both arc grooves, and the ends of both arc grooves abut on the sliding member, Further rotation of the rotating part is restricted, and the rotation angle range of the rotating part is set.
[0006]
[Patent Document 1]
Japanese Utility Model Publication No. 55-128019 [Patent Document 2]
Japanese Patent Laid-Open No. 55-96927
[Problems to be solved by the invention]
However, although what is described in Patent Document 1 has an advantage in that the mechanism is simple, the rotation angle range is narrowed by the width size of the locking portion of the main body portion in the rotation direction of the rotation portion, so 360 degrees. It is impossible to realize a rotation angle range of 180 degrees on the left and right with reference to the rotation angle range or the directly-facing position.
[0008]
On the other hand, what is described in Patent Document 2 is advantageous in that the above rotation angle range can be realized, but in order to increase the strength against the static pressure load caused by twisting in the left-right rotation direction, the thickness of the sliding member Therefore, it is necessary to increase the width and the like, and accordingly, the arc groove also needs to be enlarged. That is, the capacity constituting the mechanism increases, and there is a possibility that the size of the strobe device itself cannot be accommodated.
[0009]
In addition, in the device described in Patent Document 2, the sliding member has to be sandwiched between the circular arc grooves of the main body portion and the movable portion. However, this work is complicated and the structure is poor.
[0010]
Therefore, the present invention has been made in view of the above problems, and provides a rotation mechanism capable of realizing a wider rotation angle range and simplifying the structure, and an electronic flash device including the rotation mechanism. The issue is to provide.
[0011]
[Means for Solving the Problems]
Rotating mechanism according to the present invention has been made to solve the above problems, a main body portion, and a rotating portion rotatable relative to the body portion, the body portion in response to rotation of said rotating portion It includes a locking plate that moves the provided guide groove, so that the locking portion of the rotating portion and the locking portion of the locking plate by contact, the rotation angle range of the rotary part is set configured characterized the kite.
[0012]
According to the rotating mechanism having the configuration described in the claims of the present application, the locking plate and / or the locking portion of the rotating portion is moved by the guide groove by a predetermined amount along with the rotation of the rotating portion. Can be further rotated, so that the rotation angle range of the rotating portion is set wider.
[0013]
According to a second aspect of the present invention, in the rotation mechanism, the locking plate moves in the guide groove in the rotation direction of the rotating portion when the locking plate comes into contact with the locking portion of the rotating portion. configuration and the straight moving, as in claim 5, wherein the rotary plate the attached to the rotating portion by a predetermined angular amount movable in the rotational direction of the rotating portion, the movable locking position of the locking portion of the rotating part The structure to be made can be adopted.
[0014]
In particular, when the securing plate is rectilinear movable, as in claims 3 and 4, wherein, on both sides of the moving direction of the locking plate, comprising a locking plate abutting the pair of engaging portions, further body The latching part of a part can employ | adopt the structure urged | biased so that it may become the intermediate position of a pair of said latching | locking part. According to the rotating mechanism having such a configuration, the movement range of the locking plate is set by the pair of locking portions, but when the contact restriction of the locking plate by the locking portion of the rotating portion is released, The locking plate moves to an intermediate position by urging . Thereby, it can prevent that a malfunction arises when switching the rotation direction of a rotation part, or it can prevent that the locking plate contact | abutted to a pair of locking part is damaged by a twist.
[0015]
By incorporating these rotation mechanisms into the electronic flash device, an electronic flash device that realizes a wide range of bounce angles can be provided.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0017]
As shown in FIG. 1, the electronic flash device according to this embodiment includes a main body portion 1, an intermediate portion 8 that can rotate in a horizontal (left-right) direction with respect to the main body portion 1, and a vertical position with respect to the intermediate portion 8. The light emitting unit 13 that can rotate in the (up and down) direction is provided, and the light emitting unit 13 rotates in two orthogonal axes with respect to the main body unit 1, so that illumination light emitted from the light emitting window 14 of the light emitting unit 13 is irradiated. In this configuration, the direction can be changed horizontally or vertically with respect to the subject.
[0018]
The main body 1 includes various electric circuits and power supply units (none shown) in a pair of molds (a front mold 2 and a back mold 3) combined with each other. It is a part that can be freely attached.
[0019]
The intermediate portion 8 is configured such that a lead wire (not shown) from the light emitting portion 13 is housed in a pair of molds (a front mold 9 and a back mold 10) combined with each other, and constitutes a rotating portion of the present invention.
[0020]
Then, on the lower surface of the intermediate portion 8, a protrusion 8a having a substantially circular cross section (a combination of a protrusion 9a having a substantially semicircular cross section of the front mold 9 and a protrusion 10a having a substantially semicircular cross section of the back mold 10). On the other hand, on the upper surface of the main body 1, a circular hole 1a having substantially the same shape as the protrusion 8a (a combination of a semicircular hole (not shown) of the front mold 2 and a semicircular hole 3a of the back mold 3) is formed. And the protrusion 8a slides about the axis in the circular hole 1a, whereby the intermediate portion 8 rotates in the horizontal direction with respect to the main body portion 1.
[0021]
In addition, since a hole is formed in the protrusion 8a and the lead wire is connected to the electric circuit of the main body 1 through the hole, the lead wire is not exposed to the outside. Further, a radial groove 8c is formed in a part of the outer periphery of the protrusion 10a, and a spring and a click protrusion (both not shown) are housed in the groove 8c, while a predetermined angle of the inner periphery of the circular hole 1a An appropriate engaging recess (not shown) is formed at the position, and the click protrusion engages any of the engaging recesses, whereby the intermediate portion 8 is positioned with respect to the main body 1.
[0022]
A rotating plate 11 is attached to the protruding portion 8a. Specifically, the protruding portion 8 a includes a protruding portion 8 b having a non-circular cross section, while the rotating plate 11 is formed with a hole having substantially the same shape as the protruding portion 8 b, and the protruding portion 8 b is formed in the hole of the rotating plate 11. Is inserted and the rotation plate 11 is fixed to the projection 8a with screws 12 in a state where the rotation of the rotation plate 11 relative to the projection 8a is restricted.
[0023]
The rotating plate 11 has a substantially circular shape, and is formed to have a larger diameter than the protrusion 8a (circular hole 1a). Therefore, the rotating plate 11 acts as a stopper to prevent the protruding portion 8a from coming out of the circular hole 1a in the axial direction of the protruding portion 8a.
[0024]
The rotating plate 11 includes an engaging portion 11a. The engaging portion 11a is formed by bending a belt-like tongue piece protruding from a part of the outer periphery of the rotating plate 11 to about 90 degrees, and constitutes a part of means for setting the rotation angle range of the intermediate portion 8.
[0025]
Then, corresponding to the engaging portion 11a of the rotating plate 11, the engaging portion 4a of the engaging plate 4 and the engaging plate as a part of means for setting the rotation angle range of the intermediate portion 8 also in the main body portion 1. Is provided. The engagement portion 4a is formed by bending a belt-like tongue piece protruding from the central portion of the long side of the locking plate 4 having a substantially rectangular shape at about 90 degrees, and can be brought into contact with the locking portion 11a of the intermediate portion 8. Placed in position. Specifically, the locking part 4a is arranged by arranging the locking plate 4 in the guide groove 5 provided in the main body part 1 (inner surface of the back surface mold 3).
[0026]
The guide groove 5 is formed in a substantially rectangular shape, like the locking plate 4, by projecting an enclosing projection from the inner surface of the mold 3, but its long piece is located beyond the long side of the locking plate 4. As a result, the locking plate 4 (locking portion 4a) is movable by a predetermined amount in a direction orthogonal to the rotation axis of the intermediate portion.
[0027]
A pair of locking portions 6 and 6 having a predetermined interval in the sliding direction of the locking plate 4 are provided in the vicinity of the guide groove 5 and at two positions. The locking portions 6, 6 are positioned on the movement line of the locking portion 4 a that moves as the locking plate 4 slides, so that the locking portion 4 a moves between the locking portions 6, 6. . That is, the locking portion 4a is in contact with each locking portion 6 to restrict further movement and set a movement range.
[0028]
In addition, the height dimension of the latching | locking part 4a is higher than the height dimension of the latching | locking part 6, and the side surface whole surface of the latching | locking part 6 and the side surface except the front-end | tip part of the latching | locking part 4a surface-abut. It is like that. Further, a cover 7 is joined to the surrounding protrusions constituting the guide groove 5 so that the locking plate 4 is not detached from the guide groove 5.
[0029]
The electronic flash device according to the present embodiment has the above-described configuration, and the usage method will be described below with reference to FIG.
[0030]
2A shows a state in which the light emitting window 14 of the light emitting unit 13 faces the subject, and FIG. 2B shows that the light emitting unit 13 rotates 180 degrees clockwise (as viewed from the front) from the front facing state. Shows the state. As shown in FIG. 2A, the locking portion 11 a of the intermediate portion 8 is in the positional relationship of the counter electrode farthest from the locking portion 4 a of the locking plate 4 in the facing state. That is, a line connecting the width center of the engaging portion 11a of the rotational center and the middle portion 8 of the intermediate portion 8, an orthogonal relationship with the sliding surface of the locking plate 4 of the locking plate 4.
[0031]
Since the locking part 4a of the locking plate 4 and the locking part 11a of the intermediate part 8 are separated from each other, the intermediate part 8 (light emitting part 13) is rotatable. Therefore, the intermediate portion 8 is rotated clockwise. Then, since the intermediate position of the pair of locking portions 6, 6 is set to a 180 ° relationship with the center of the width of the locking portion 11 a of the intermediate portion 8 around the rotation center of the intermediate portion 8, the intermediate portion 8 The locking portion 11a contacts the locking portion 4a of the locking plate 4 whose center of width coincides with the intermediate position of the pair of locking portions 6 and 6 until the intermediate portion 8 rotates 180 degrees.
[0032]
However, since the locking portion 4a of the locking plate 4 can move to the left side, the rotation portion can realize a rotation angle range of 180 degrees clockwise. When the intermediate portion 8 rotates 180 degrees, the locking portion 11a of the intermediate portion 8 abuts on the locking portion 6 of the main body 1 via the locking portion 4a of the locking plate 4 , so that further rotation is restricted. Is done.
[0033]
This time, the middle part 8 is rotated counterclockwise. Then, the locking portion 11a of the intermediate portion 8 contacts the locking portion 4a of the locking plate 4 that is in contact with the locking portion 6 on the left side of the main body portion 1 until the intermediate portion 8 rotates 360 degrees. . In addition, since the latching | locking part 6 of the main-body part 1 is formed lower than the latching | locking part 4a of the latching board 4 , the front-end | tip of the latching | locking part 4a is the state protruded, and here of the intermediate part 8 The locking portion 11 a comes into contact with the locking portion 11 a and the locking portion 11 a does not interfere with the locking portion 6 of the main body 1.
[0034]
Thereafter, the locking portion 4a of the locking plate 4 can move to the right side, so that a rotation angle range of 360 degrees in the counterclockwise direction can be realized. When the intermediate portion 8 is rotated 360 degrees, the locking portion 11a of the intermediate portion 8 comes into contact with the locking portion 6 on the opposite side of the main body portion 1 via the locking portion 4a of the locking plate 4 , so Rotation is regulated.
[0035]
Such an operation can be performed in reverse. That is, if the intermediate portion 8 is rotated counterclockwise from the directly-facing state, a rotation angle range of 180 degrees can be realized counterclockwise, and if the intermediate portion 8 is rotated backward (clockwise) from there, A rotation angle range of 360 degrees around can be realized.
[0036]
As described above, according to the electronic flash device according to the present embodiment, a wide rotation angle range can be realized with a simple mechanism which has not been conventionally used.
[0037]
In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of this invention.
[0038]
For example, in the above embodiments, the movement of the locking portion 4a (securing plate 4) has been realized with a rotational force of the intermediate portion 8, as shown in FIG. 3 (b), both ends of the retaining plate 4 Further, an elastic member such as a spring 15 may be interposed between the engaging portion 4a and the engaging portion 4a to always be biased to a neutral position (facing state). As a result, it is possible to avoid interference with the locking portion 6 of the main body 1, and it is not necessary to consider the contact between the locking portion 4 a of the locking plate 4 and the locking portion 11 a of the intermediate portion 8. The locking part 6 of the part 1 can be flush with the locking part 4a so that the side surface of the locking part 6 and the side surface of the locking part 4a can be brought into surface contact with each other. The strength against twisting of the four locking portions 4a can be increased, and breakage, bending, etc. of the locking portions 4a can be suitably prevented.
[0039]
Moreover, in the said embodiment, although the latching | locking part 4a of the latching plate 4 is comprised movably , as shown to FIG. 3 (B), the fixed latching | locking part 16 is provided in the main-body part 1, It is also possible to make the locking portion 11a of the intermediate portion 8 movable by a predetermined amount. Specifically, an appropriate arc-shaped guide groove 11b is formed in the rotating plate 11, and a protrusion-shaped guide portion 8b to be inserted into the guide groove 11b is provided in the intermediate portion 8 (projection portion 8a thereof). The rotating plate 11 is configured to be movable with respect to the portion 8 by a predetermined angle around the rotation axis. A screw 17 is attached to the guide portion 8b to prevent the rotating plate 11 from coming off from the protruding portion 8a with the head of the screw 17.
[0040]
In addition, only one of the locking portion 4a of the locking plate 4 or the locking portion 11a of the intermediate portion 8 may be movable, not both movable.
[0041]
Moreover, in the said embodiment, although the latching | locking part 11a of the intermediate part 8 is provided in the rotating plate 11, it is made to provide the latching | locking part 11a directly in the intermediate part 8 (the molds 9 and 10). Also good. Similarly, when the locking portion 16 of the main body 1 is fixed as shown in FIG. 3B, the locking portion 16 is not provided directly on the main body 1 (molds 2 and 3 thereof). A member provided on another member may be attached to the main body 1.
[0042]
Moreover, in the said embodiment, a pair of latching | locking parts 6 and 6 are arrange | positioned at the both sides of the latching | locking part 4a of the latching plate 4 , and the movement range of the latching | locking part 4a of the latching plate 4 is set by this. 3B, for example, a guide groove along the moving direction is formed in the locking plate 4, and a guide body 8b protruding from the main body 1 is inserted into the guide groove. The movement range of the locking plate 4 may be set by the guide body 8b. Conversely, the configuration of FIG. 3B is the configuration as shown in FIGS. A pair of locking portions may be arranged on both sides of the portion 11a, and thereby the movement range of the locking portion 11a of the intermediate portion 8 may be set.
[0043]
In addition, the specific shapes, dimensions, and arrangement of the guide groove 5, the locking plate 4, the locking portion 4a, the locking portion 6, the rotating plate 11, the locking portion 11a, and the like are design matters.
[0044]
The rotating mechanism described above is not limited to the electronic flash device, and can be applied to, for example, a digital video camera constituted by a liquid crystal screen, a finder of a digital camera, and the like.
[0045]
【The invention's effect】
As described above, the rotation mechanism according to the present invention has a wider rotation angle range because the locking portion of the main body portion and / or the locking portion of the rotation portion is movable by a predetermined amount in the direction corresponding to the rotation of the rotation portion. Moreover, since the structure is simple, the apparatus can be downsized.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of an electronic flash device according to an embodiment of the present invention. FIG. 2 is an electronic flash device according to the embodiment,
(A) is a partially omitted perspective view with the light emitting part facing forward, partially omitted in perspective view (b) is a partially omitted perspective view with the light emitting part rotated 180 degrees. FIG. Such an electronic flash device,
(A) is a perspective view of the main part of the structure in which the locking plate is biased to the neutral position by a spring (B) is a perspective view of the main part of the structure in which the rotating plate is movable.
DESCRIPTION OF SYMBOLS 1 Main body part 4 Locking plate 4a Engaging part 6 Locking part 8 Middle part (rotating part)
11 Rotating plate 11a Engaging portion 13 Light emitting portion 15 Spring (elastic member)
16 Locking part

Claims (6)

本体部と、前記本体部に対して回転可能な回転部と、前記回転部の回転に対応して前記本体部に設けられたガイド溝内を可動する係止板を備え、前記係止板の係止部と前記回転部の係止部とが当接することにより、回転部の回転角度範囲が設定されるように構成されたことを特徴とする回転機構。Comprising a body portion, a rotating portion rotatable relative to the body portion, a locking plate that moves the guide groove provided in the body portion in response to rotation of the rotating part, of the locking plate a rotation mechanism between the engaging portion and the engaged portion of the rotating section by abutment, is configured to the rotation angle range of the rotary part is set, wherein the kite. 前記係止板は、前記回転部の係止部との当接に伴って前記ガイド溝内を直進可動することを特徴とする請求項1記載の回転機構。The rotation mechanism according to claim 1, wherein the locking plate is linearly movable in the guide groove in accordance with contact with the locking portion of the rotating portion . 前記本体部のガイド溝は、前記係止板の係止部の移動範囲の両側に、前記係止板の係止部と当接する一対の係止部を備えることを特徴とする請求項記載の回転機構。 Guide grooves of said main body portion, on both sides of the moving range of the locking portion of the locking plate, according to claim 1, characterized in that it comprises a pair of locking portions and the locking portion abutting of the locking plate Rotation mechanism. 前記係止板が、前記ガイド溝の一対の係止部の中間位置となるように付勢されることを特徴とする請求項1記載の回転機構。  The rotation mechanism according to claim 1, wherein the locking plate is biased so as to be at an intermediate position between the pair of locking portions of the guide groove. 前記回転部の回転に対応して前記本体部に設けられたガイド溝内を可動する係止板にかえ、前記回転部に取付られた回転板が前記回転部の回転方向に所定角度量可動して、係止位置を可動することを特徴とする請求項1記載の回転機構。  Instead of a locking plate that moves in a guide groove provided in the main body portion corresponding to the rotation of the rotating portion, the rotating plate attached to the rotating portion moves a predetermined angle amount in the rotating direction of the rotating portion. The rotating mechanism according to claim 1, wherein the locking position is movable. 請求項1乃至5の何れかに記載の回転機構を備えたことを特徴とする電子閃光装置。  An electronic flash device comprising the rotation mechanism according to claim 1.
JP2003052852A 2003-02-28 2003-02-28 Rotating mechanism and electronic flash device having the same Expired - Fee Related JP4285028B2 (en)

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