JPH08122657A - Main body operation part of endoscope - Google Patents
Main body operation part of endoscopeInfo
- Publication number
- JPH08122657A JPH08122657A JP6279818A JP27981894A JPH08122657A JP H08122657 A JPH08122657 A JP H08122657A JP 6279818 A JP6279818 A JP 6279818A JP 27981894 A JP27981894 A JP 27981894A JP H08122657 A JPH08122657 A JP H08122657A
- Authority
- JP
- Japan
- Prior art keywords
- main body
- body housing
- connecting member
- eyepiece
- endoscope
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、医療用，工業用等とし
て用いられる内視鏡の本体操作部に関し、特にこの本体
操作部におけるスイッチ等からなる操作手段の装着機構
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a main body operating portion of an endoscope used for medical purposes, industrial purposes, etc., and more particularly to a mounting mechanism for operating means such as a switch in the main body operating portion.
【０００２】[0002]
【従来の技術】内視鏡は、挿入部の基端部に本体操作部
を連設すると共に、この本体操作部に光源装置等に着脱
可能に接続されるユニバーサルコードを連設することに
より大略構成されるが、内視鏡の操作を行う者は本体操
作部を片手で把持して操作されるようになっている。こ
のために、本体操作部における本体ハウジングには操作
者の手指で操作される種々の操作手段が設けられてい
る。この種の操作手段としては、挿入部の先端側に設け
たアングル部を所望の方向に湾曲させるためのアングル
操作ノブがある。また、挿入部の先端に設けた観察窓が
汚れた場合には、洗浄液及び加圧エアからなる洗浄用流
体を供給するための洗浄用バルブを作動させるための、
所謂送気送水ボタンや、体腔内における汚物等を吸引す
るための吸引ボタンがある。2. Description of the Related Art An endoscope is generally equipped with a main body operating portion connected to a base end portion of an insertion portion and a universal cord detachably connected to a light source device or the like connected to the main body operating portion. Although configured, a person who operates the endoscope is configured to operate while holding the main body operation unit with one hand. For this purpose, the main body housing of the main body operation unit is provided with various operating means operated by the operator's fingers. As this kind of operation means, there is an angle operation knob for bending the angle portion provided on the distal end side of the insertion portion in a desired direction. In addition, when the observation window provided at the tip of the insertion part is dirty, a cleaning valve for supplying a cleaning fluid consisting of cleaning liquid and pressurized air is operated,
There are so-called air / water supply buttons and suction buttons for sucking dirt and the like in the body cavity.
【０００３】ここで、内視鏡における観察機構として
は、観察窓を介して得られる観察対象部の像をイメージ
ガイドを介して接眼部にまで導いて、この接眼部を介し
て観察する光学式の内視鏡と、固体撮像素子を観察窓に
臨ませて、この固体撮像素子によって、観察対象部の像
を電気信号に変換して、プロセッサにまで伝送し、この
プロセッサによって所定の信号処理を行って、モニタ装
置に映像として表示する、電子内視鏡とがある。光学式
の内視鏡にあっては、接眼部が設けられるが、この接眼
部は、本体操作部の後端側、即ち挿入部の連設側とは反
対側に連結されることになる。光学式の内視鏡であれ、
また電子内視鏡であれ、本体操作部における本体ハウジ
ングとしては、接眼部が設けられるか、そうでないかの
違いでしかないために、通常は、本体操作部を構成する
本体ハウジングは、光学式の内視鏡と電子内視鏡とに共
用することができる。Here, as an observation mechanism in an endoscope, an image of an observation target portion obtained through an observation window is guided to an eyepiece portion through an image guide and observed through this eyepiece portion. The optical endoscope and the solid-state image sensor face the observation window, the solid-state image sensor converts the image of the observation target portion into an electric signal, and the electric signal is transmitted to the processor. There is an electronic endoscope that performs processing and displays the image on a monitor device. In an optical endoscope, an eyepiece is provided, but this eyepiece is connected to the rear end side of the main body operation section, that is, the side opposite to the insertion side of the insertion section. Become. Whether it ’s an optical endoscope,
In the case of an electronic endoscope, the main body housing in the main body operation unit is usually the optical housing because the difference is whether an eyepiece is provided or not. It can be used for both the expression endoscope and the electronic endoscope.
【０００４】接眼部には少なくともイメージガイドを臨
ませる必要があることから、光学式の内視鏡用として構
成される本体ハウジングには、その後端部にイメージガ
イド等の挿通部材を挿通させるための透孔を設ける必要
がある。一方、電子内視鏡では接眼部を設ける必要がな
いが、プロセッサやＶＴＲ（ビデオテープレコーダ）等
の外部機器が接続され、内視鏡だけでなく、それに接続
される外部機器の制御をより円滑に行うために、それら
の作動を制御するためのスイッチ等の操作手段を設ける
必要が設けられる。そこで、電子内視鏡として構成する
場合には、本体ハウジングの後端部のスペースをスイッ
チ等の操作手段の装着部として利用するようにしてい
る。このために、例えばスイッチケースを用い、このス
イッチケースを本体ハウジングの後端部に固定する。ス
イッチケースには、スイッチが設けられており、このス
イッチにはケーブルが接続され、このケーブルは本体操
作部内にまで延在させなければならないことから、前述
した透孔をこのケーブル挿通部として利用するようにし
ている。Since at least the image guide needs to be exposed to the eyepiece, a body housing configured for an optical endoscope has a rear end portion to which an insertion member such as an image guide is inserted. It is necessary to provide a through hole. On the other hand, an electronic endoscope does not need to have an eyepiece, but an external device such as a processor or a VTR (video tape recorder) is connected to control not only the endoscope but also the external device connected to it. In order to carry out smoothly, it is necessary to provide an operating means such as a switch for controlling those operations. Therefore, in the case of being configured as an electronic endoscope, the space at the rear end portion of the main body housing is used as a mounting portion for operating means such as a switch. For this purpose, for example, a switch case is used, and this switch case is fixed to the rear end of the main body housing. A switch is provided in the switch case, and a cable is connected to this switch. Since this cable must extend into the main body operation part, the above-mentioned through hole is used as this cable insertion part. I am trying.
【０００５】ここで、接眼部や、スイッチケース等の連
結部材を本体操作部の本体ハウジングに固定するために
は、本体ハウジングにおける透孔の周囲に外側から連結
部材を当接させ、また内側からは押え板を当接させて、
ボルトを用いて連結部材と押え板とを本体ハウジングの
壁面に圧接させるようにするのが一般的である。Here, in order to fix the connecting member such as the eyepiece or the switch case to the main body housing of the main body operating portion, the connecting member is brought into contact with the periphery of the through hole in the main body housing from the outside and the inside. Abut the pressing plate,
It is common to use a bolt to press the connecting member and the pressing plate against the wall surface of the main body housing.
【０００６】[0006]
【発明が解決しようとする課題】ところで、前述のよう
にして連結部材を本体操作部の本体ハウジングに固定す
ると、連結部材はその軸線方向には確実に固定されて、
がた等のない状態に保持される。しかしながら、回転方
向においては、連結部材は本体ハウジングに摩擦係合し
ているだけであるから、強力な回転力が加わったり、ま
た繰り返し回転方向に力を加わったりすると、ボルトが
緩むおそれがある。特に、接眼部が設けられる光学式の
内視鏡にあっては、視度調整を行うために接眼部には視
度調整リングが設けられており、この視度調整リングを
繰り返し回動操作すると、この接眼部を固定しているボ
ルトが緩んで、この接眼部が不安定になり、甚だしい場
合には、接眼部が脱落するおそれがある等という欠点が
ある。従って、連結部材は本体ハウジングに対して回り
止めするために、例えばキー結合する等の手段を設けな
ければならないが、このように回り止め機構を設ける
と、それだけ連結部材の連結部が大型化するという問題
点がある。When the connecting member is fixed to the main body housing of the main body operating portion as described above, the connecting member is securely fixed in the axial direction,
It is kept free of rattling. However, in the rotational direction, the connecting member is only frictionally engaged with the main body housing, and therefore, if a strong rotational force is applied or a force is repeatedly applied in the rotational direction, the bolt may be loosened. In particular, in an optical endoscope having an eyepiece, a diopter adjustment ring is provided in the eyepiece to adjust the diopter, and the diopter adjustment ring is repeatedly rotated. When operated, the bolt fixing the eyepiece is loosened and the eyepiece becomes unstable. In the extreme case, the eyepiece may fall off. Therefore, in order to prevent the connecting member from rotating with respect to the main body housing, it is necessary to provide means such as key connection. However, if such a rotating stop mechanism is provided, the connecting portion of the connecting member becomes larger. There is a problem.
【０００７】本発明は以上の点に鑑みてなされたもので
あって、その目的とするところは、本体操作部と連結部
材との連結部の構成を複雑化、大型化することなく、そ
の本体ケーシングに連結した連結部材に回転力が加わっ
ても、極めて安定した状態に保持できるようにすること
にある。The present invention has been made in view of the above points, and it is an object of the present invention to provide a main body of the main body without making the structure of the connecting portion between the main body operating portion and the connecting member complicated and large. Even if a rotational force is applied to the connecting member connected to the casing, it is possible to maintain a very stable state.
【０００８】[0008]
【課題を解決するための手段】前述した目的を達成する
ために、本発明は、挿入部の基端部に連設され、操作者
が把持して操作を行う操作手段を設けた本体ハウジング
の後端部に挿通部材を挿通させる透孔を形設し、この透
孔形成部に操作手段のケースまたは接眼部からなる連結
部材を固定的に取り付けるために、本体ハウジングにお
ける透孔の周囲に外側から連結部材を、また内側からは
押え板を当接させた状態で、この連結部材と押え板との
間に本体ハウジングを挟み込むようにしてボルトで締着
するようにしたものであって、前記押え板の一端面を前
記本体ハウジングの内面と当接させ、また前記ボルトの
挿通部は、前記連結部材の回転中心に対して偏心した位
置に設ける構成としたことをその特徴とするものであ
る。In order to achieve the above-mentioned object, the present invention is directed to a main body housing provided with an operating means which is connected to a proximal end portion of an insertion portion and which is operated by an operator for gripping and operating. A through hole for inserting the insertion member is formed in the rear end portion, and in order to fixedly attach the connecting member composed of the case of the operating means or the eyepiece to the through hole forming portion, the through hole is formed around the through hole in the main body housing. A body member housing is sandwiched between the connecting member and the pressing plate in a state where the connecting member is in contact with the connecting member from the outside and the pressing plate is in contact with the pressing member from the inside, and is tightened with a bolt. One end surface of the pressing plate is brought into contact with the inner surface of the main body housing, and the insertion portion of the bolt is provided at a position eccentric to the rotation center of the connecting member. is there.
【０００９】[0009]
【作用】ボルトの締め付けによる圧接力で、連結部材及
び押え板がボルトの軸線方向には確実に固定される。ま
た、押え板の一端面は本体ハウジングの内面と当接して
いるので、押え板は回転方向にも固定されている。連結
部材自体は本体ハウジングと面接触しているだけである
から、それ自体は回転方向に規制されていない。しかし
ながら、連結部材を回転させようとすると、その回転中
心から偏心した位置にボルトを挿通させているから、ボ
ルトを軸回りに回転させる力が作用するのではなく、そ
れを連結部材の回転中心を中心とし、偏心量を半径とす
る円方向に動かそうとする力が作用する。この結果、連
結部材の回転力は、ボルトを回転させる力に変換される
のではなく、押え板に伝達されて、この押え板を回転さ
せようとする。そして、押え板は本体ハウジングの内面
と面接触して、回転不能となっているから、連結部材の
回転力は、最終的には本体ハウジングにより受承される
ことになる。従って、ボルトが緩むおそれはない。ここ
で、連結部材の回転力を本体ハウジングの内面に確実に
受承させるには、押え板と本体ハウジング内面との接触
長さを長く取れば良いが、またボルト挿通部を押え板と
本体ハウジング内面との接触部からできるだけ離せば、
やはり連結部材を安定させることができる。このために
は、ボルトの挿通位置を押え板の本体ハウジングへの当
接部に対して、連結部材の回転中心位置を挟んだ反対側
の位置に設ければ良い。The connecting member and the pressing plate are securely fixed in the axial direction of the bolt by the pressure contact force caused by tightening the bolt. Further, since one end surface of the pressing plate is in contact with the inner surface of the main body housing, the pressing plate is also fixed in the rotation direction. Since the connecting member itself is only in surface contact with the main body housing, the connecting member itself is not restricted in the rotational direction. However, when trying to rotate the connecting member, the bolt is inserted at a position eccentric from the center of rotation of the connecting member. A force acts to move in a circular direction with the center as the center and the eccentricity as the radius. As a result, the rotational force of the connecting member is not converted into the force for rotating the bolt, but is transmitted to the holding plate to try to rotate the holding plate. Then, since the pressing plate is in surface contact with the inner surface of the main body housing and cannot rotate, the rotational force of the connecting member is finally received by the main body housing. Therefore, there is no risk that the bolt will loosen. Here, in order to surely receive the rotational force of the connecting member on the inner surface of the main body housing, the contact length between the holding plate and the inner surface of the main body housing should be long. As far as possible from the contact part with the inner surface,
After all, the connecting member can be stabilized. For this purpose, the insertion position of the bolt may be provided at a position on the opposite side of the contact portion of the pressing plate to the main body housing with the rotation center position of the connecting member interposed therebetween.
【００１０】[0010]
【実施例】以下、図面に基づいて本発明の実施例につい
て説明する。まず、図１に内視鏡の全体構成を示す。図
中において、１は本体操作部、２は体腔等の内部に挿入
される挿入部、３はユニバーサルコードである。ここ
で、図示の内視鏡は挿入部２の先端における観察窓に設
けた対物レンズの結像位置にイメージガイドを臨ませ
て、このイメージガイドを挿入部２から本体操作部１の
内部にまで延在させて、この本体操作部１の後端部に連
結して設けた接眼部４にまで延在させ、この接眼部４に
接眼することによって、体腔等の内部を観察できるよう
にした、所謂光学式の内視鏡である。また、挿入部の先
端の対物レンズの結像位置に固体撮像素子を設けて、こ
の固体撮像素子によって、観察対象部の像を電気信号に
変換するようにした電子内視鏡として構成する場合に
は、接眼部４は装着されないが、これに代えて各種の操
作手段、特にスイッチ類を設けたスイッチケース５が装
着されるようになっている。Embodiments of the present invention will be described below with reference to the drawings. First, FIG. 1 shows the overall configuration of the endoscope. In the figure, 1 is a main body operation part, 2 is an insertion part to be inserted into a body cavity or the like, and 3 is a universal cord. Here, in the illustrated endoscope, the image guide is made to face the image forming position of the objective lens provided in the observation window at the distal end of the insertion section 2, and the image guide is extended from the insertion section 2 to the inside of the main body operation section 1. By extending the eyepiece 4 to the eyepiece portion 4 provided by being connected to the rear end portion of the main body operation portion 1, and by bringing the eyepiece portion 4 into the eyepiece, the inside of a body cavity or the like can be observed. It is a so-called optical endoscope. Further, when a solid-state image sensor is provided at the image-forming position of the objective lens at the tip of the insertion section and the solid-state image sensor is used to convert the image of the observation target portion into an electric signal, the electronic endoscope is configured. The eyepiece 4 is not attached, but instead of this, various operating means, in particular, a switch case 5 provided with switches is attached.
【００１１】以上のように、本体操作部１には、接眼部
４またはスイッチケース５からなる連結部材が装着され
て、光学式の内視鏡または電子内視鏡として構成される
が、図２にこの連結部材の一例としての接眼部４の構成
を示す。図中において、１０はイメージガイドを示し、
このイメージガイド１０は接眼部４の本体部１１に固定
的に連結されている。この本体部１１には、接眼レンズ
１２を設けた鏡胴１３が装着されており、イメージガイ
ド１０は、この鏡胴１３に所定の間隔を置いて対面して
いる。また、鏡胴１３にはカムピン１４が突設されてお
り、このカムピン１４は本体部１１に、その軸線方向に
設けたガイド孔１１ａを貫通して、本体部１１に嵌合し
て設けたカムリング１５のカム溝１５ａに係合してい
る。そして、カムリング１５には視度調整リング１６が
連結されており、この視度調整リング１６を回動操作す
ることによって、鏡胴１３をイメージガイド１０の端面
に近接・離間する方向に変位させて、視度調整を行える
ようになっている。As described above, the main body operation unit 1 is equipped with the connecting member composed of the eyepiece unit 4 or the switch case 5 and is configured as an optical endoscope or an electronic endoscope. 2 shows the configuration of the eyepiece 4 as an example of this connecting member. In the figure, 10 indicates an image guide,
The image guide 10 is fixedly connected to the main body 11 of the eyepiece 4. A lens barrel 13 provided with an eyepiece lens 12 is mounted on the main body 11, and the image guide 10 faces the lens barrel 13 with a predetermined interval. Further, a cam pin 14 is provided on the lens barrel 13 so as to project therefrom. The cam pin 14 is provided in the main body portion 11 through a guide hole 11a provided in the axial direction of the main body portion 11 so as to be fitted to the main body portion 11. It engages with the cam groove 15a of No. 15. A diopter adjustment ring 16 is connected to the cam ring 15. By rotating the diopter adjustment ring 16, the lens barrel 13 is displaced in a direction of approaching or separating from the end face of the image guide 10. , Diopter adjustment is possible.
【００１２】一方、電子内視鏡として構成する場合に
は、本体操作部１に連結されるスイッチケース５は、図
３に示したように構成される。図中において、２０はケ
ース本体であり、このケース本体２０には、手指等で操
作される２個のスイッチ２１が、ねじ孔２０ａに螺挿す
るようにして固定されている。そして、これらスイッチ
２１には、それぞれ一対からなるケーブル２２が接続さ
れており、このケーブル２２はケース本体２０に設けた
ケーブル挿通孔２０ｂを貫通して本体操作部１に向けて
導出されている。On the other hand, when it is constructed as an electronic endoscope, the switch case 5 connected to the main body operation portion 1 is constructed as shown in FIG. In the figure, reference numeral 20 denotes a case main body, and two switches 21 operated by fingers or the like are fixed to the case main body 20 by being screwed into the screw holes 20a. A cable 22 consisting of a pair is connected to each of the switches 21, and the cable 22 penetrates through a cable insertion hole 20b provided in the case body 20 and is led out toward the body operation unit 1.
【００１３】次に、接眼部４及びスイッチケース５の本
体操作部１への取り付け構造を示す。本体操作部１を構
成する本体ハウジング１ａの後端部には挿通部材を挿通
させるための透孔６が開設されており、この透孔６を挟
んで本体ハウジング１ａの内部側には押え板が臨み、こ
の押え板にボルトを挿通させて、接眼部４またはスイッ
チケース５が締着・固定されるようになっている。接眼
部４を固定する機構としては、図４に示した押え板３０
を用い、またスイッチケース５を固定する機構として
は、図５に示した押え板４０を用いる。Next, a structure for attaching the eyepiece section 4 and the switch case 5 to the main body operation section 1 will be described. A through hole 6 for inserting an insertion member is formed at a rear end portion of the main body housing 1a that constitutes the main body operating portion 1. A holding plate is provided inside the main body housing 1a with the through hole 6 interposed therebetween. Faced with this, the eyepiece 4 or the switch case 5 is fastened and fixed by inserting a bolt through the holding plate. As a mechanism for fixing the eyepiece unit 4, the holding plate 30 shown in FIG.
And a holding plate 40 shown in FIG. 5 is used as a mechanism for fixing the switch case 5.
【００１４】接眼部４の固定は、図２及び図４から明ら
かなように、２本のボルト３１，３１を用い、これら２
本のボルト３１は押え板３０に穿設したボルト挿通孔３
２を貫通して延び、接眼部４の本体部１１において、押
え板３０と対面する面に穿設したねじ孔１７に螺挿され
ている。そして、この押え板３０には、イメージガイド
１０を挿通させるための貫通孔３３と、接眼部４に着脱
可能に接続されるカメラ（図示せず）に電源供給，シャ
ッタリリース信号等の信号の授受を行うためのケーブル
を挿通するケーブル挿通孔３４が形成されている。As is apparent from FIGS. 2 and 4, the eyepiece 4 is fixed by using two bolts 31, 31.
The bolt 31 is a bolt insertion hole 3 formed in the holding plate 30.
2 extends through the eyepiece portion 4 and is screwed into a screw hole 17 formed in a surface of the body portion 11 of the eyepiece portion 4 facing the pressing plate 30. The holding plate 30 is provided with a through hole 33 for inserting the image guide 10, and a camera (not shown) detachably connected to the eyepiece 4 is supplied with power, and a signal such as a shutter release signal is supplied. A cable insertion hole 34 for inserting a cable for transmission and reception is formed.
【００１５】一方、スイッチケース５の固定は、図３及
び図５から明らかなように、１本のボルト４１を用いて
行われる。而して、押え板４０と、スイッチケース５の
ケース本体２０における押え板４０に対面する側の面と
には、それぞれボルト挿通孔４２，２３が穿設されてお
り、スイッチケース５のケース本体２０側のボルト挿通
孔２３には大径部２３ａが設けられており、この大径部
２３ａ内にはナット４３が収容されるようになってい
る。従って、ボルト４１とナット４３との螺合によっ
て、スイッチケース５が固定されるようになっている。
また、押え板４０には、ケース本体２０のケーブル挿通
孔２０ｂを貫通して延びるケーブル２２を本体操作部１
の本体ハウジング１ａ内に導くためのケーブル挿通孔４
４が開設されている。On the other hand, the switch case 5 is fixed by using one bolt 41, as is apparent from FIGS. 3 and 5. Thus, the press plate 40 and the surface of the case body 20 of the switch case 5 facing the press plate 40 are provided with bolt insertion holes 42 and 23, respectively, and the case body of the switch case 5 is formed. A large diameter portion 23a is provided in the bolt insertion hole 23 on the 20 side, and a nut 43 is accommodated in the large diameter portion 23a. Therefore, the switch case 5 is fixed by screwing the bolt 41 and the nut 43.
In addition, a cable 22 extending through the cable insertion hole 20b of the case body 20 is attached to the holding plate 40, and the cable 22 is inserted into the body operation unit 1.
Cable insertion hole 4 for guiding the inside of the main body housing 1a
4 have been established.
【００１６】接眼部４またはスイッチケース５からなる
連結部材は、前述したように、本体ハウジング１ａに固
定されるが、いずれの場合にしろ、これらの連結部材
は、押え板３０または４０との間でボルト３１または４
１で本体ハウジング１ａを挟み込むようにして固定され
るために、これら連結部材を本体ハウジング１ａから引
き離す方向、即ちボルト３１，４１の軸線方向には強固
に固定されるが、一方向に回転させる力が作用すると、
ボルト３１，４１が緩むおそれがある。とりわけ、接眼
部４の場合には、視度調整リング１６が回動操作される
ことから、接眼部４の全体に回転力が加わることが多
い。このように回転方向の力が作用した時に、容易にボ
ルト３１，４１が緩むようであっては、接眼部４なり、
スイッチケース５なりの連結部材を安定的に保持できな
いことになる。The connecting member consisting of the eyepiece 4 or the switch case 5 is fixed to the main body housing 1a as described above, but in any case, these connecting members are connected to the holding plate 30 or 40. Bolt 31 or 4 between
Since the main body housing 1a is fixed by sandwiching it with 1, the connecting members are firmly fixed in the direction in which they are separated from the main body housing 1a, that is, in the axial direction of the bolts 31 and 41, but the force for rotating in one direction. Is activated,
The bolts 31 and 41 may be loosened. In particular, in the case of the eyepiece 4, since the diopter adjustment ring 16 is rotated, the rotational force is often applied to the entire eyepiece 4. When the bolts 31 and 41 seem to be easily loosened when a force in the rotational direction is applied, the eyepiece 4 becomes
This means that the connecting member such as the switch case 5 cannot be stably held.
【００１７】図２及び図３に示したように、接眼部４の
本体部１１及びスイッチケース５のケース本体２０は、
本体ハウジング１ａの透孔６に嵌合されていることか
ら、この嵌合部にキー結合部やビス装着等による回り止
め機構を設けることは可能である。しかしながら、回り
止め機構を設けると、この連結部の構成が複雑になり、
かつその回り止め機能を確実に発揮させるためには、大
掛かりな回り止め機構としなければならず、このために
この連結部が大型化することになる。As shown in FIGS. 2 and 3, the body 11 of the eyepiece 4 and the case body 20 of the switch case 5 are
Since it is fitted into the through hole 6 of the main body housing 1a, it is possible to provide the fitting portion with a rotation stopping mechanism such as a key coupling portion or screw attachment. However, if a rotation stopping mechanism is provided, the structure of this connecting part becomes complicated,
In addition, in order to surely exert its anti-rotation function, a large-scale anti-rotation mechanism must be used, which results in an increase in size of this connecting portion.
【００１８】そこで、本発明においては、前述したよう
な格別の回り止め機構を設けることなく、連結部材が回
るのを確実に防止できるようにしている。このために、
まず、押え板３０，４０の一端面３０ａ，４０ａを本体
ハウジング１ａの側壁部の内面と当接させている。この
押え部材３０，４０の当接端面３０ａ，４０ａは所定の
長さをもって当接している。これによって、押え板３
０，４０は回転しないように固定される。Therefore, in the present invention, it is possible to surely prevent the connecting member from rotating without providing the above-described special detent mechanism. For this,
First, the one end surfaces 30a, 40a of the pressing plates 30, 40 are brought into contact with the inner surface of the side wall portion of the main body housing 1a. The contact end surfaces 30a, 40a of the pressing members 30, 40 are in contact with each other with a predetermined length. By this, the presser plate 3
0 and 40 are fixed so as not to rotate.
【００１９】連結部材を構成する接眼部４，スイッチケ
ース５は本体ハウジング１ａと面接触しているだけであ
るから、それ自体は回転方向に規制されていない。ここ
で、接眼部４，スイッチケース５を回転させる際には、
その回転中心は図４及び図５のＯ1 ，Ｏ2 となる。そし
て、図４の接眼部４にあっては、２本挿通されているボ
ルト３１，３１は共に回転中心Ｏ1 に対して偏心し、こ
の回転中心Ｏ1 を挟んで両側の位置にあり、当接端面３
０ａの本体ハウジング１ａへの当接部のほぼ中間位置と
回転中心Ｏ1 とを結ぶ線の延長線上に偏心した位置に配
置されている。また、スイッチケース５の場合には、そ
の当接端面４０ａの本体ハウジング１ａへの当接部のほ
ぼ中間位置と回転中心Ｏ2 とを結ぶ線の延長線上の位置
にボルト４１が装着されている。Since the eyepiece 4 and the switch case 5 forming the connecting member are only in surface contact with the main body housing 1a, they themselves are not restricted in the rotational direction. Here, when rotating the eyepiece 4 and the switch case 5,
The centers of rotation are O 1 and O 2 in FIGS. 4 and 5. Then, in the eyepiece section 4 of FIG. 4, two insertion has been that bolts 31 and 31 eccentrically together with respect to the rotation center O 1, located on either side of the position across the rotation center O 1, Abutting end face 3
It is arranged at a position eccentric to the extension of the line connecting the rotation center O 1 and the substantially middle position of the contact portion of 0a with the main body housing 1a. Further, in the case of the switch case 5, a bolt 41 is mounted at a position on an extension line of a line connecting the center of rotation O 2 and a substantially intermediate position of the contact end surface 40a of the switch case 5 with the main body housing 1a. .
【００２０】以上のように、ボルト３１，４１を回転中
心Ｏ1 ，Ｏ2 に対して偏心した位置に配置し、しかも当
接端面３０ａ，４０ａから回転中心Ｏ1 ，Ｏ2 までの距
離より離れた位置に配設されているから、連結部材であ
る接眼部４及びスイッチケース５を回転させようとする
と、ボルト３１，４１を軸回りに回転させる力が作用す
るのではなく、接眼部４及びスイッチケース５を連結部
材の回転中心Ｏ1 ，Ｏ2 を中心とし、偏心量を半径とす
る円方向に動かそうとする力が作用する。この結果、接
眼部４及びスイッチケース５に作用する回転力は、ボル
ト３１，４１を回転させる力に変換されるのではなく、
押え板３０，４０に伝達されて、この押え板３０，４０
が回転する方向の力に変換される。押え板３０，４０の
当接端面３０ａ，４０ａが本体ハウジング１ａの内面と
面接触して、回転不能となっているから、この回転力
は、最終的には本体ハウジング１ａにより受承され、ボ
ルト３１，４０が回転して緩むおそれはない。しかも、
ボルト３１，４１の押え板３０，４０の当接端面３０
ａ，４０ａからボルト３１，４１の装着部までは十分な
間隔をもっているから、接眼部４，スイッチケース５の
回り止め機能をより強力に発揮させることができ、連結
部材としての接眼部４やスイッチケース５を極めて安定
的に保持される。[0020] As described above, placing the bolts 31 and 41 to the eccentric position with respect to the rotation center O 1, O 2, moreover apart than the distance of the abutment end face 30a, from 40a to the rotational center O 1, O 2 When the eyepiece 4 and the switch case 5 which are the connecting members are to be rotated, the force for rotating the bolts 31 and 41 around the axes does not act, but the eyepiece 4 is disposed. A force acts to move 4 and the switch case 5 in a circular direction with the eccentricity as a radius with the rotation centers O 1 and O 2 of the connecting members as centers. As a result, the rotational force acting on the eyepiece section 4 and the switch case 5 is not converted into the force for rotating the bolts 31 and 41, but
The pressure plates 30 and 40 are transmitted to the pressure plates 30 and 40.
Is converted into a force in the rotating direction. Since the abutting end surfaces 30a, 40a of the pressing plates 30, 40 make surface contact with the inner surface of the main body housing 1a and cannot rotate, this rotational force is finally received by the main body housing 1a and the bolts There is no risk of the 31, 40 rotating and loosening. Moreover,
Abutment end surface 30 of the pressing plates 30 and 40 of the bolts 31 and 41
Since there is a sufficient distance from the a, 40a to the mounting parts of the bolts 31, 41, the rotation preventing function of the eyepiece part 4 and the switch case 5 can be exerted more strongly, and the eyepiece part 4 as a connecting member. The switch case 5 is held very stably.
【００２１】ここで、本体ハウジング１ａの一側には、
内部のメンテナンスを行うための開口が設けられてお
り、この開口は常時は蓋体１ｂで気密状態にして閉塞さ
れており、従ってこの側の壁面に力が加わると、その押
圧力によって、蓋体１ｂの装着部における気密性が低下
するおそれがある。しかしながら、押え板３０，４０の
当接端面３０ａ，４０ａが当接しているのは、蓋体１ｂ
の装着部とは反対側の壁面であるために、かなりの回転
力が作用したとしても、蓋体１ｂの装着部における気密
性が低下することはない。Here, on one side of the main body housing 1a,
An opening for performing internal maintenance is provided, and this opening is normally closed by the lid body 1b in an airtight state. Therefore, when a force is applied to the wall surface on this side, the pressing force causes the lid body to be closed. The airtightness of the mounting portion of 1b may be reduced. However, the contact end surfaces 30a, 40a of the pressing plates 30, 40 are in contact with each other because the lid 1b is in contact.
Since it is the wall surface on the side opposite to the mounting portion, the airtightness of the mounting portion of the lid body 1b does not deteriorate even if a considerable rotational force acts.
【００２２】[0022]
【発明の効果】本発明は、以上説明したように押え板を
本体ハウジングに当接させ、かつボルトを連結部材の回
転中心から偏心させた位置に装着するように構成したの
で、本体操作部と連結部材との連結部の構成を複雑化、
大型化することなく、その本体ケーシングに連結した連
結部材に回転力が加わっても、ボルトが緩むようなこと
はなく、極めて安定した状態に保持できる等の効果を奏
する。As described above, according to the present invention, the holding plate is brought into contact with the main body housing, and the bolt is mounted at a position eccentric from the rotation center of the connecting member. Complicates the structure of the connection part with the connection member,
Even if the connecting member connected to the main body casing is subjected to a rotational force without increasing the size, the bolt does not loosen, and the effect is that it can be maintained in an extremely stable state.
【図１】本発明の一実施例を示す本体操作部を備えた内
視鏡の全体構成図である。FIG. 1 is an overall configuration diagram of an endoscope including a main body operation unit according to an embodiment of the present invention.
【図２】本体操作部と接眼部との連結部の水平方向、即
ち図４のＨ−Ｈ方向の断面図である。FIG. 2 is a cross-sectional view of a connecting portion between a main body operating portion and an eyepiece portion in a horizontal direction, that is, a HH direction in FIG.
【図３】本体操作部とスイッチケースとの連結部の垂直
方向、即ち図５のＬ−Ｌ方向の断面図である。3 is a cross-sectional view of the connecting portion between the main body operating portion and the switch case in the vertical direction, that is, in the LL direction in FIG.
【図４】接眼部用の押え板の構成を示す図１のＸ−Ｘ断
面図である。FIG. 4 is a cross-sectional view taken along line XX in FIG. 1, showing the structure of a holding plate for an eyepiece.
【図５】スイッチケース用の押え板の構成を示す図４と
同様の断面図である。FIG. 5 is a sectional view similar to FIG. 4, showing the structure of a holding plate for a switch case.
１ 本体操作部 ４ 接眼部 ５ スイッチケース １０ イメージガイド １１ 本体部 １２ 接眼レンズ １７ ねじ孔 ２０ ケース本体 ２１ スイッチ ２３ ボルト挿通孔 ３０，４０ 押え板 ３０ａ，４０ａ 当接端面 ３１，４１ ボルト ３２，４２ ボルト挿通孔 DESCRIPTION OF SYMBOLS 1 Main body operation part 4 Eyepiece part 5 Switch case 10 Image guide 11 Main body part 12 Eyepiece lens 17 Screw hole 20 Case main body 21 Switch 23 Bolt insertion hole 30,40 Holding plate 30a, 40a Contact end face 31, 41 Bolt 32, 42 Bolt insertion hole
Claims (2)
持して操作を行う操作手段を設けた本体ハウジングの後
端部に挿通部材を挿通させる透孔を形設し、この透孔形
成部に操作手段のケースまたは接眼部からなる連結部材
を固定的に取り付けるために、本体ハウジングにおける
透孔の周囲に外側から連結部材を、また内側からは押え
板を当接させた状態で、この連結部材と押え板との間に
本体ハウジングを挟み込むようにしてボルトで締着する
ようにしたものにおいて、前記押え板の一端面を前記本
体ハウジングの内面と当接させ、また前記ボルトの挿通
部は、前記連結部材の回転中心に対して偏心した位置に
設ける構成としたことを特徴とする内視鏡の本体操作
部。1. A through hole through which an insertion member is inserted is formed in a rear end portion of a main body housing which is connected to a base end portion of an insertion portion and is provided with an operation means for an operator to grip and operate. In order to fixedly attach the connecting member consisting of the case or the eyepiece of the operating means to the through hole forming portion, the connecting member was brought into contact with the periphery of the through hole in the main body housing from the outside and the holding plate from the inside. In this state, the main body housing is sandwiched between the connecting member and the holding plate and fastened with bolts, one end surface of the holding plate is brought into contact with the inner surface of the main body housing, and The main body operation part of the endoscope, wherein the insertion part of the bolt is arranged at a position eccentric to the rotation center of the connecting member.
体ハウジングへの当接部に対して、前記連結部材の回転
中心位置を挟んだ反対側の位置に形成するようにしたこ
とを特徴とする請求項１記載の内視鏡の本体操作部。2. The insertion portion of the bolt is formed at a position on the opposite side of the contact portion of the pressing plate to the main body housing with the rotation center position of the connecting member interposed therebetween. The main body operation part of the endoscope according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6279818A JP2998578B2 (en) | 1994-10-20 | 1994-10-20 | Endoscope main body operation unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6279818A JP2998578B2 (en) | 1994-10-20 | 1994-10-20 | Endoscope main body operation unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08122657A true JPH08122657A (en) | 1996-05-17 |
| JP2998578B2 JP2998578B2 (en) | 2000-01-11 |
Family
ID=17616348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6279818A Expired - Fee Related JP2998578B2 (en) | 1994-10-20 | 1994-10-20 | Endoscope main body operation unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2998578B2 (en) |
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