JP2014064821A - Rotary chopper driver in light source device for endoscope, and method for assembling rotary chopper driver in light source device for endoscope - Google Patents

Rotary chopper driver in light source device for endoscope, and method for assembling rotary chopper driver in light source device for endoscope Download PDF

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JP2014064821A
JP2014064821A JP2012213337A JP2012213337A JP2014064821A JP 2014064821 A JP2014064821 A JP 2014064821A JP 2012213337 A JP2012213337 A JP 2012213337A JP 2012213337 A JP2012213337 A JP 2012213337A JP 2014064821 A JP2014064821 A JP 2014064821A
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motor
base member
light source
output shaft
drive shaft
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JP6055639B2 (en
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Takehito Hiraga
武仁 平賀
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Hoya Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a rotary chopper driver which can be assembled while holding down a positional deviation amount between the axes of an output shaft of a motor and a rotary driving shaft of a rotary chopper which are connected to each other by a flexible joint.SOLUTION: A rotary chopper driver includes: a base member 31 separated from a light source for supplying illuminating light to a photo detecting part of an endoscope; a rotary driving shaft supported on the base member; rotary choppers 40, 42 rotating between the light source supported on the rotary driving shaft and the photo detecting part; a motor 50 attached and detached to and from the base member and having an output shaft 52; a positioning joint member having a first temporary connecting part and a second temporary connecting part attached and detached to and from the rotary driving shaft and the output shaft, respectively; a flexible joint 70 selectively attaching and detaching the positioning joint member to and from the rotary driving shaft and the output shaft; and a connecting member 62 which can be fixed to the motor 50 only at a predetermined position and can be fixed to the base member 31 while the position is varied.

Description

本発明は内視鏡用光源装置に設けた回転チョッパ駆動装置、及び、その組立方法に関する。   The present invention relates to a rotary chopper driving device provided in an endoscope light source device and an assembling method thereof.

特許文献1は内視鏡用光源装置の従来例を開示している。
この内視鏡用光源装置は、内視鏡のコネクタ部が着脱可能な接続孔を備えるケースと、ケース内に設けた光源(ランプ)と、接続孔と光源の間に位置するようにケース内に設けた回転チョッパ駆動装置と、を具備している。
Patent Document 1 discloses a conventional example of an endoscope light source device.
The endoscope light source device includes a case having a connection hole in which the connector portion of the endoscope can be attached and detached, a light source (lamp) provided in the case, and a position between the connection hole and the light source. And a rotary chopper driving device provided in the above.

回転チョッパ駆動装置としては様々な構造のものを利用することが可能であるが、その一例として図10に示すものがある(図10の回転チョッパ駆動装置は公知技術ではない)。
この回転チョッパ駆動装置は、回転チョッパ支持ブロックと、回転チョッパ支持ブロックに支持した2枚の回転チョッパ(第1回転チョッパ、第2回転チョッパ)と、回転チョッパ支持ブロックに固定状態で接続した2つのモータ(チョッパモータ、位相差モータ)と、を備えている。
As the rotating chopper driving device, ones having various structures can be used, and an example thereof is shown in FIG. 10 (the rotating chopper driving device in FIG. 10 is not a known technique).
The rotary chopper driving device includes a rotary chopper support block, two rotary choppers (first rotary chopper and second rotary chopper) supported by the rotary chopper support block, and two fixedly connected to the rotary chopper support block. And a motor (chopper motor, phase difference motor).

回転チョッパ支持ブロックの構成部材である略円筒形状のメインステーの内周面には、前後一対のベアリングを介して第1回転駆動軸が回転可能(スラスト方向に移動不能)に支持してあり、第1回転駆動軸の先端部には、開口部を有する第1回転チョッパ(回転板)の中心部が固定してある。
回転チョッパ支持ブロックにはチョッパモータがネジにより固定してある。チョッパモータの第1出力軸は回転チョッパ支持ブロックの内部空間において、第1回転駆動軸と隙間を形成しながら対向している。さらにチョッパモータの第1出力軸と第1回転駆動軸はフレキシブルジョイントを介して互いに接続している。
On the inner peripheral surface of the substantially cylindrical main stay, which is a constituent member of the rotary chopper support block, the first rotary drive shaft is rotatably supported (impossible to move in the thrust direction) via a pair of front and rear bearings. A central portion of a first rotating chopper (rotating plate) having an opening is fixed to the tip of the first rotation drive shaft.
A chopper motor is fixed to the rotary chopper support block with screws. The first output shaft of the chopper motor faces the first rotary drive shaft while forming a gap in the internal space of the rotary chopper support block. Further, the first output shaft and the first rotation drive shaft of the chopper motor are connected to each other through a flexible joint.

回転チョッパ駆動装置はメインギヤ機構を具備しており、メインギヤ機構の構成要素であるギヤ歯車が第1回転駆動軸に固定してある。さらにメインギヤ機構は回転チョッパ支持ギヤ歯車と連係しており、この回転チョッパ支持ギヤ歯車が、第1回転チョッパと同心をなす第2回転チョッパ(回転板)の中心部に固定してある。
さらに回転チョッパ支持ブロックには位相差モータがネジにより固定してある。位相差モータの第2出力軸と回転チョッパ支持ギヤ歯車はサブギヤ機構を介して接続している。
The rotary chopper drive device includes a main gear mechanism, and a gear gear which is a component of the main gear mechanism is fixed to the first rotary drive shaft. Further, the main gear mechanism is linked to a rotary chopper support gear gear, and this rotary chopper support gear gear is fixed to the center of a second rotary chopper (rotary plate) concentric with the first rotary chopper.
Further, a phase difference motor is fixed to the rotary chopper support block with screws. The second output shaft of the phase difference motor and the rotating chopper support gear gear are connected via a sub gear mechanism.

内視鏡のコネクタ部をケースの接続孔に接続しかつ光源を点灯させた状態で、ケースに設けた操作パネルを操作することによりチョッパモータを回転させると(位相差モータは停止)、チョッパモータの回転力が第1回転駆動軸から第1回転チョッパに伝わり、かつ、メインギヤ機構及び回転チョッパ支持ギヤ歯車から第2回転チョッパに伝わる。そのため第1回転チョッパの開口部と第2回転チョッパの開口部が重なることにより形成される照明光透過孔の大きさが一定に維持された状態で、第1回転チョッパ及び第2回転チョッパが一緒に回転する。従って、2枚の回転チョッパ(及び開口部)によって、光源からコネクタ部に向かう照明光が断続的に遮光される。
一方、操作パネルを操作することによりチョッパモータ及び位相差モータを回転させると、チョッパモータの回転力に加えて、位相差モータの回転力がサブギヤ機構及び回転チョッパ支持ギヤ歯車を介して第2回転チョッパに伝わるので、第2回転チョッパの回転速度が第1回転チョッパの回転速度より速くなる。従って、第1回転チョッパと第2回転チョッパが相対回転し、照明光透過孔の大きさが変化する。このように位相差モータを利用して照明光透過孔の大きさを変化させると、コネクタ部に供給する照明光の光量が変化する。
When the connector part of the endoscope is connected to the connection hole of the case and the light source is turned on, the chopper motor is rotated by operating the operation panel provided on the case (the phase difference motor is stopped). Is transmitted from the first rotation drive shaft to the first rotation chopper, and from the main gear mechanism and the rotation chopper support gear gear to the second rotation chopper. Therefore, the first rotating chopper and the second rotating chopper are kept together in a state where the size of the illumination light transmitting hole formed by overlapping the opening of the first rotating chopper and the opening of the second rotating chopper is kept constant. Rotate to. Accordingly, the illumination light directed from the light source to the connector portion is intermittently blocked by the two rotating choppers (and the opening).
On the other hand, when the chopper motor and the phase difference motor are rotated by operating the operation panel, the rotation force of the phase difference motor is rotated in the second rotation via the sub-gear mechanism and the rotation chopper support gear gear in addition to the rotation force of the chopper motor. Since it is transmitted to the chopper, the rotation speed of the second rotation chopper becomes faster than the rotation speed of the first rotation chopper. Therefore, the first rotating chopper and the second rotating chopper rotate relative to each other, and the size of the illumination light transmitting hole changes. As described above, when the size of the illumination light transmitting hole is changed using the phase difference motor, the amount of illumination light supplied to the connector portion changes.

さらにチョッパモータの第1出力軸と第1回転駆動軸をフレキシブルジョイントによって接続しているので、第1出力軸と第1回転駆動軸の軸線が互いに僅かにずれていても、第1出力軸の振動を小さく抑えながら、第1出力軸の出力を第1回転駆動軸に確実に伝達できる。
なお、第1出力軸と第1回転駆動軸の軸線が(僅かに)ずれた状態で両者を直接接続した場合(フレキシブルジョイントを利用しない場合)は、第1出力軸を回転させたときの第1出力軸の振動が大きくなってしまう。モータ本体内には第1出力軸を回転可能に支持するためのベアリングが設けてあるが、第1出力軸の振動が大きくなると、このベアリングが破損し易くなってしまう。
Further, since the first output shaft of the chopper motor and the first rotation drive shaft are connected by a flexible joint, even if the axes of the first output shaft and the first rotation drive shaft are slightly shifted from each other, The output of the first output shaft can be reliably transmitted to the first rotation drive shaft while suppressing vibrations to be small.
When the first output shaft and the first rotation drive shaft are directly connected with the axis line slightly shifted (when the flexible joint is not used), the first output shaft is rotated when the first output shaft is rotated. The vibration of one output shaft will increase. A bearing for rotatably supporting the first output shaft is provided in the motor body. However, if the vibration of the first output shaft is increased, the bearing is easily damaged.

特開2005−287887号公報Japanese Patent Application Laid-Open No. 2005-287887

図10の回転チョッパ駆動装置も、第1出力軸と第1回転駆動軸が両者の軸線に対して直交する方向に大きく位置ずれした状態で、フレキシブルジョイントによって第1出力軸と第1回転駆動軸を接続すると、第1出力軸を回転させたときの第1出力軸の振動が大きくなってしまう。
しかしこれまでは、図10の回転チョッパ駆動装置を、第1出力軸と第1回転駆動軸の軸線どうしの位置ずれ量を小さく抑えながら組み立てることが難しかった。
The rotary chopper drive device of FIG. 10 also has the first output shaft and the first rotary drive shaft by the flexible joint in a state in which the first output shaft and the first rotary drive shaft are greatly displaced in the direction orthogonal to both axes. Is connected, the vibration of the first output shaft when the first output shaft is rotated becomes large.
However, until now, it has been difficult to assemble the rotary chopper drive device of FIG. 10 while keeping the positional deviation between the first output shaft and the first rotary drive shaft small.

本発明は、フレキシブルジョイントによって互いに接続されるモータの出力軸と回転チョッパの回転駆動軸との軸線どうしの位置ずれ量を小さく抑えながら組み立てることが可能な内視鏡用光源装置における回転チョッパ駆動装置、及び、内視鏡用光源装置における回転チョッパ駆動装置の組立方法を提供することを目的とする。   The present invention relates to a rotary chopper drive device in an endoscope light source device that can be assembled while minimizing the amount of positional deviation between axes of a motor output shaft and a rotary drive shaft of a rotary chopper connected to each other by a flexible joint. And it aims at providing the assembly method of the rotation chopper drive device in the light source device for endoscopes.

本発明の内視鏡用光源装置における回転チョッパ駆動装置は、内視鏡の受光部に対して照明光を供給する光源から離間するベース部材と、該ベース部材に支持した、その軸線回りに回転可能な回転駆動軸と、該回転駆動軸に支持した、上記光源と上記受光部の間で回転することにより、上記照明光を断続的に遮光する回転チョッパと、上記ベース部材に着脱可能で、かつ出力軸を有するモータと、互いに上記軸線方向に対向した状態の上記回転駆動軸及び上記出力軸に対してそれぞれ着脱可能で、共に一直線上に位置する第一仮接続部及び第二仮接続部を有する位置決め用ジョイント部材と、上記第一仮接続部及び上記仮第二接続部とそれぞれ同一仕様で両者の相対位置関係が上記第一仮接続部と上記第二仮接続部の相対位置関係と同一である第一接続部及び第二接続部を、上記回転駆動軸及び上記出力軸に対して上記位置決め用ジョイント部材と選択的に着脱可能なフレキシブルジョイントと、上記モータとは所定の固定位置でのみ互いに固定可能で、かつ、上記ベース部材とは上記軸線に対して直交する平面上の位置を変えながら固定可能である、上記モータ及び上記ベース部材に対して着脱可能な連結部材と、を備えることを特徴としている。   The rotating chopper driving device in the endoscope light source device according to the present invention is configured to rotate around an axis line supported by the base member, which is separated from the light source that supplies the illumination light to the light receiving unit of the endoscope, and the base member. A rotation drive shaft that is possible, and a rotation chopper that is supported by the rotation drive shaft and rotates between the light source and the light receiving unit, thereby intermittently blocking the illumination light; and detachable from the base member; And a motor having an output shaft and a first temporary connection portion and a second temporary connection portion that are detachably attached to the rotary drive shaft and the output shaft in a state of being opposed to each other in the axial direction and are both positioned on a straight line. The positioning joint member has the same specifications as the first temporary connection portion and the temporary second connection portion, and the relative positional relationship between them is the relative positional relationship between the first temporary connection portion and the second temporary connection portion. The same The first connecting portion and the second connecting portion are fixed to each other only at a predetermined fixing position, and the flexible joint that can be selectively attached to and detached from the positioning joint member with respect to the rotary drive shaft and the output shaft. And a connecting member detachable from the motor and the base member, which can be fixed while changing a position on a plane orthogonal to the axis with respect to the base member. It is said.

本発明の内視鏡用光源装置における回転チョッパ駆動装置は、別の態様によると、内視鏡の受光部に対して照明光を供給する光源から離間するベース部材と、該ベース部材に支持した、その軸線回りに回転可能な回転駆動軸と、該回転駆動軸に支持した、上記光源と上記受光部の間で回転することにより、上記照明光を断続的に遮光する回転チョッパと、上記ベース部材に着脱可能で、かつ出力軸を有するモータと、上記モータとは所定の固定位置でのみ互いに固定可能で、かつ、上記ベース部材とは上記軸線に対して直交する平面上の位置を変えながら固定可能である、上記モータ及び上記ベース部材に対して着脱可能な連結部材と、上記回転駆動軸と上記出力軸を上記軸線方向に対向させながら上記連結部材を上記モータ及び上記ベース部材に固定した状態で、上記回転駆動軸及び上記出力軸に対して着脱可能に接続するフレキシブルジョイントと、を備えることを特徴としている。   According to another aspect, the rotary chopper driving device in the endoscope light source device according to the present invention is supported by the base member that is separated from the light source that supplies the illumination light to the light receiving unit of the endoscope, and the base member. A rotary drive shaft rotatable around the axis, a rotary chopper that is supported by the rotary drive shaft, and rotates between the light source and the light receiving unit to intermittently block the illumination light, and the base A motor that can be attached to and detached from the member and has an output shaft, and the motor can be fixed to each other only at a predetermined fixing position, and the base member is changed in a position on a plane orthogonal to the axis. A connecting member that is attachable to and detachable from the motor and the base member, and the connecting member is connected to the motor and the base while the rotation drive shaft and the output shaft are opposed to each other in the axial direction. While being fixed to wood, it is characterized in that and a flexible joint for detachably connected to the rotary drive shaft and the output shaft.

上記ベース部材の上記モータとの対向面に、上記軸線に対して直交する第一平面を形成し、上記モータの上記ベース部材との対向面に、上記第一平面と平行でかつ該第一平面に対して摺接可能な第二平面を形成してもよい。   A first plane orthogonal to the axis is formed on the surface of the base member facing the motor, and the first plane is parallel to the first plane and is opposed to the base member of the motor. You may form the 2nd plane which can be slidably contacted with respect to.

上記ベース部材に雌ネジ孔を形成し、かつ、上記モータに該雌ネジ孔と螺合可能な位置調整用ネジを取付可能とするか、又は、上記ベース部材に位置調整用ネジを突設し、かつ、上記モータに該位置調整用ネジが螺合するナットを取付可能とし、上記連結部材に、上記位置調整用ネジの雄ネジ部より大径で該雄ネジ部が貫通する位置調整用孔を形成してもよい。   A female screw hole is formed in the base member, and a position adjusting screw that can be screwed into the female screw hole can be attached to the motor, or a position adjusting screw is protruded from the base member. And a position adjusting hole through which the male screw portion penetrates the connecting member and has a larger diameter than the male screw portion of the position adjusting screw. May be formed.

本発明の内視鏡用光源装置における回転チョッパ駆動装置の組立方法は、内視鏡の受光部に対して照明光を供給する光源から離間するベース部材と、該ベース部材に支持した、その軸線回りに回転可能な回転駆動軸と、該回転駆動軸に支持した、上記光源と上記受光部の間で回転することにより、上記照明光を断続的に遮光する回転チョッパと、上記回転駆動軸と上記軸線方向に離間しながら対向する出力軸を有する、上記ベース部材に対して着脱可能なモータと、上記回転駆動軸と上記出力軸に対してそれぞれ接続することにより、上記出力軸の出力を上記回転駆動軸に伝達するフレキシブルジョイントと、を備える内視鏡用光源装置における回転チョッパ駆動装置の組立方法であって、上記ベース部材と分離した上記モータに対して、上記モータ及び上記ベース部材とは別体の連結部材を所定の固定位置で着脱可能に固定するステップ、上記軸線方向に対向させた上記回転駆動軸及び上記出力軸に対して、位置決め用ジョイント部材に形成した共に一直線上に位置する第一仮接続部及び第二仮接続部をそれぞれ接続し、かつ、上記ベース部材と上記連結部材の対向面どうしを接触させるステップ、上記ベース部材と上記連結部材を固定するステップ、上記モータを上記連結部材から分離し、かつ、上記位置決め用ジョイント部材の上記第一仮接続部及び上記第二仮接続部を上記回転駆動軸及び上記出力軸から分離するステップ、上記フレキシブルジョイントに形成した上記第一仮接続部と同一仕様の第一接続部を、上記回転駆動軸に接続するステップ、上記フレキシブルジョイントに形成した上記第二仮接続部と同一仕様でかつ上記第一接続部との相対位置関係が上記第一仮接続部と上記第二仮接続部の相対位置関係と同一である第二接続部を、上記出力軸に接続するステップ、及び、上記モータを上記連結部材に対して上記固定位置で固定するステップを有することを特徴としている。   The method of assembling the rotary chopper driving device in the endoscope light source device according to the present invention includes a base member that is separated from a light source that supplies illumination light to the light receiving portion of the endoscope, and an axis that is supported by the base member. A rotary drive shaft that can rotate around, a rotary chopper that is supported by the rotary drive shaft and that intermittently blocks the illumination light by rotating between the light source and the light receiving unit; and the rotary drive shaft; The output of the output shaft is connected to the rotation member shaft and the output shaft, respectively, by connecting the motor to the base member that has an output shaft facing the axial member while being spaced apart in the axial direction, and the rotation drive shaft and the output shaft. An assembly method of a rotary chopper drive device in an endoscope light source device comprising a flexible joint for transmitting to a rotary drive shaft, wherein the motor is separated from the base member. A step of detachably fixing a connecting member separate from the motor and the base member at a predetermined fixing position, formed on a positioning joint member with respect to the rotational drive shaft and the output shaft opposed to the axial direction Connecting the first temporary connection portion and the second temporary connection portion, both of which are located on a straight line, and bringing the opposing surfaces of the base member and the connecting member into contact with each other, fixing the base member and the connecting member Separating the motor from the coupling member, and separating the first temporary connection portion and the second temporary connection portion of the positioning joint member from the rotary drive shaft and the output shaft, the flexible Connecting the first connection portion having the same specifications as the first temporary connection portion formed on the joint to the rotary drive shaft; The second connection having the same specifications as the second temporary connection portion formed on the first and the relative positional relationship with the first connection portion is the same as the relative positional relationship between the first temporary connection portion and the second temporary connection portion. Connecting a portion to the output shaft, and fixing the motor to the connecting member at the fixed position.

本発明では、位置決め用ジョイント部材の第一仮接続部及び第二仮接続部を回転駆動軸と出力軸に対してそれぞれ仮接続することにより、回転駆動軸と出力軸を回転駆動軸の軸線方向に対向させた上で、ベース部材と連結部材を固定することが可能である。そのため、その後にモータを連結部材から分離しさらに位置決め用ジョイント部材を回転駆動軸及び出力軸から分離しても、モータを連結部材に対して(所定の固定位置で)再び固定すると、回転駆動軸と出力軸は位置決め用ジョイント部材を装着したときと同じ態様で回転駆動軸の軸線方向に対向する。従って、モータの出力軸と回転チョッパの回転駆動軸の軸線どうしの位置ずれ量を小さく抑えた状態で、出力軸と回転駆動軸をフレキシブルジョイントにより接続すること(内視鏡用光源装置を組み立てること)が可能なので、出力軸を回転させたときに出力軸の振動が大きくなることがない。   In the present invention, the first temporary connection portion and the second temporary connection portion of the positioning joint member are temporarily connected to the rotation drive shaft and the output shaft, respectively, so that the rotation drive shaft and the output shaft are in the axial direction of the rotation drive shaft. It is possible to fix the base member and the connecting member while facing each other. Therefore, even if the motor is subsequently separated from the connecting member, and the positioning joint member is separated from the rotational drive shaft and the output shaft, the rotational drive shaft is re-fixed to the connecting member (at a predetermined fixed position). And the output shaft face each other in the axial direction of the rotary drive shaft in the same manner as when the positioning joint member is mounted. Therefore, the output shaft and the rotary drive shaft are connected by a flexible joint in a state in which the amount of positional deviation between the axis lines of the motor output shaft and the rotary drive shaft of the rotary chopper is kept small (assembling an endoscope light source device). Therefore, when the output shaft is rotated, the vibration of the output shaft does not increase.

本発明を適用した一実施形態の光源兼画像処理装置と電子内視鏡を平面的に見た模式図である。It is the schematic diagram which looked at the light source and image processing apparatus and electronic endoscope of one Embodiment to which this invention was applied planarly. 電子内視鏡、光源兼画像処理装置、及び、表示装置の構成を模式的に示すブロック図である。It is a block diagram which shows typically the structure of an electronic endoscope, a light source and image processing apparatus, and a display apparatus. 回転チョッパ駆動装置の分解斜視図である。It is a disassembled perspective view of a rotation chopper drive device. 回転チョッパ駆動装置の分解状態の様子を、ベース部材側ユニットを断面視で示す側面図である。It is a side view which shows the mode of the decomposition | disassembly state of a rotation chopper drive device by a base member side unit by a cross sectional view. モータ及び連結部材の一体物とベース部材側ユニットの分離状態の様子を、ベース部材側ユニットを断面視で示す側面図である。It is a side view which shows the state of the separation state of the integrated object of a motor and a connection member, and the base member side unit in a cross sectional view. 位置決め用ジョイント部材を利用してモータ及び連結部材の一体物とベース部材側ユニットを接続したときの様子を、ベース部材側ユニットを断面視で示す側面図である。It is a side view which shows a mode when the integrated member of a motor and a connection member, and the base member side unit are connected using the positioning joint member in a cross-sectional view. モータ及びモータ支持用部材の一体物、並びに、位置決め用ジョイント部材を、ベース部材側ユニットから分離したときの様子を、ベース部材側ユニットを断面視で示す側面図である。It is a side view which shows a base member side unit by a cross-sectional view, and shows a mode when the integrated object of a motor and a motor support member, and the positioning joint member are isolate | separated from the base member side unit. モータ及びモータ支持用部材の一体物と、フレキシブルジョイントを第1回転駆動軸に接続したベース部材側ユニットの分離状態の様子を、ベース部材側ユニットを断面視で示す側面図である。It is a side view which shows the base member side unit in the state of isolation | separation of the state in which the integrated object of the motor and the motor support member, and the base member side unit which connected the flexible joint to the 1st rotation drive shaft. 回転チョッパ駆動装置の縦断側面図である。It is a vertical side view of a rotary chopper drive device. 比較例の図9と同様の縦断側面図である。It is a vertical side view similar to FIG. 9 of a comparative example.

以下、図1から図9を参照しながら本発明の一実施形態について説明する。
まずは光源兼画像処理装置20に対して着脱可能な電子内視鏡10の簡単な構造について説明する。電子内視鏡10は、操作部11と、操作部11から前方に延びる挿入部12と、操作部11から挿入部12と反対側に延びるユニバーサルチューブ13と、ユニバーサルチューブ13の端部に設けたコネクタ部14と、を具備している。挿入部12の先端部には対物レンズ15と照明レンズ(図示略)が設けてある。挿入部12の前端近傍の内部には対物レンズ15の直後に位置する撮像素子16が設けてあり、撮像素子16から後方に延びる画像信号用ケーブルの後端部が、挿入部12、操作部11、及び、ユニバーサルチューブ13の内部空間を通り抜けてコネクタ部14に接続している。また、挿入部12、操作部11、ユニバーサルチューブ13、及び、コネクタ部14の内部にはライトガイドファイバ17が配設してある。ライトガイドファイバ17の前端部は上記照明レンズに接続している。
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
First, a simple structure of the electronic endoscope 10 that can be attached to and detached from the light source / image processing apparatus 20 will be described. The electronic endoscope 10 is provided at an operation unit 11, an insertion unit 12 that extends forward from the operation unit 11, a universal tube 13 that extends from the operation unit 11 to the opposite side of the insertion unit 12, and an end of the universal tube 13. Connector part 14. An objective lens 15 and an illumination lens (not shown) are provided at the distal end portion of the insertion portion 12. An image pickup device 16 located immediately after the objective lens 15 is provided in the vicinity of the front end of the insertion portion 12, and the rear end portion of the image signal cable extending rearward from the image pickup device 16 is the insertion portion 12 and the operation portion 11. And through the internal space of the universal tube 13 and connected to the connector portion 14. A light guide fiber 17 is disposed inside the insertion portion 12, the operation portion 11, the universal tube 13, and the connector portion 14. The front end portion of the light guide fiber 17 is connected to the illumination lens.

続いて電子内視鏡10に対して照明光を供給しかつ画像処理を行う光源兼画像処理装置20の詳しい構造について説明する。
光源兼画像処理装置20のケース21の側面には接続孔22が形成してある。ケース21の内部には、ランプ23(光源)、及び、接続孔22とランプ23の間に位置する集光レンズ24が配置してある。さらにケース21の内部には制御装置25と画像処理装置26が設けてあり、制御装置25はランプ23及び画像処理装置26と接続している。
Next, a detailed structure of the light source / image processing apparatus 20 that supplies illumination light to the electronic endoscope 10 and performs image processing will be described.
A connection hole 22 is formed in the side surface of the case 21 of the light source / image processing apparatus 20. Inside the case 21, a lamp 23 (light source) and a condenser lens 24 positioned between the connection hole 22 and the lamp 23 are arranged. Furthermore, a control device 25 and an image processing device 26 are provided inside the case 21, and the control device 25 is connected to the lamp 23 and the image processing device 26.

図1に示すようにケース21の内部には回転チョッパ駆動装置30が設けてある。
回転チョッパ駆動装置30は、ケース21の底面に下端部を固定したベース部材31を備えている。ベース部材31の上部にはベース部材31を貫通する収納孔32が形成してある。さらにベース部材31の平面からなる端面31c(第一平面。後述する第1回転駆動軸35の軸線に対して直交)には周方向に並ぶ3つの雌ネジ孔31aと、雌ネジ孔31aとは周方向位置をずらして形成した周方向に並ぶ3つのネジ受容孔31bと、が形成してある。ネジ受容孔31bの径は後述する止めネジ80の雄ネジ部(頭部以外の部分)より大径である。
収納孔32の内周面の奥側部分には略円筒形状のメインステー33が嵌合固定してある。メインステー33の円筒面からなる内周面には一対のベアリング34が設けてあり、各ベアリング34がメインステー33の内部空間を貫通する第1回転駆動軸35(回転駆動軸)の外周面をその軸線回りに回転可能に支持している(第1回転駆動軸35のスラスト方向への移動は不能)。
第1回転駆動軸35はその軸線方向位置に応じて外径を段階的に変化させる部材であり、その断面形状はいずれの位置においても円形である。第1回転駆動軸35の一方の端部は中間部より小径の接続軸36を構成しており、接続軸36と反対側の端部は中間部より小径の先端支持部37を構成している。
第1回転駆動軸35の先端支持部37にはチョッパ支持部材39が固定してあり、チョッパ支持部材39には第1回転チョッパ40(回転チョッパ)の中心部が固定してある。金属製の第1回転チョッパ40は第1回転駆動軸35の軸線に対して直交する平板状部材であり、その外形形状は円形である。さらに第1回転チョッパ40には第1開口部40aが形成してある。図1に示すように、第1回転チョッパ40の一部はランプ23と集光レンズ24を結ぶ直線上に位置する。
As shown in FIG. 1, a rotary chopper driving device 30 is provided inside the case 21.
The rotary chopper driving device 30 includes a base member 31 having a lower end fixed to the bottom surface of the case 21. A storage hole 32 penetrating the base member 31 is formed in the upper part of the base member 31. Further, the three female screw holes 31a and the female screw hole 31a arranged in the circumferential direction on the end surface 31c (the first flat surface, which is orthogonal to the axis of the first rotation drive shaft 35 described later) formed of a flat surface of the base member 31 are provided. Three screw receiving holes 31b arranged in the circumferential direction formed by shifting the circumferential position are formed. The diameter of the screw receiving hole 31b is larger than the male screw portion (portion other than the head) of a set screw 80 described later.
A substantially cylindrical main stay 33 is fitted and fixed to the back side portion of the inner peripheral surface of the storage hole 32. A pair of bearings 34 are provided on the inner peripheral surface formed of the cylindrical surface of the main stay 33, and the outer peripheral surface of the first rotation drive shaft 35 (rotation drive shaft) through which each bearing 34 penetrates the internal space of the main stay 33 is provided. The shaft is supported so as to be rotatable around the axis (the first rotational drive shaft 35 cannot be moved in the thrust direction).
The first rotation drive shaft 35 is a member that changes its outer diameter stepwise according to its axial position, and its cross-sectional shape is circular at any position. One end of the first rotation drive shaft 35 constitutes a connecting shaft 36 having a smaller diameter than the intermediate portion, and the end opposite to the connecting shaft 36 constitutes a tip support portion 37 having a smaller diameter than the intermediate portion. .
A chopper support member 39 is fixed to the tip support portion 37 of the first rotation drive shaft 35, and the center portion of the first rotation chopper 40 (rotation chopper) is fixed to the chopper support member 39. The metal first rotary chopper 40 is a flat plate-like member that is orthogonal to the axis of the first rotary drive shaft 35, and has an outer shape that is circular. Further, the first rotating chopper 40 is formed with a first opening 40a. As shown in FIG. 1, a part of the first rotating chopper 40 is located on a straight line connecting the lamp 23 and the condenser lens 24.

第1回転駆動軸35にはメインギヤ機構(図中に記載されているが、詳しい説明は省略)の構成要素であるギヤ歯車(説明略)が固定してあり、さらにメインギヤ機構にはチョッパ支持部材39と同軸をなす回転チョッパ支持ギヤ歯車41が連係している。そして回転チョッパ支持ギヤ歯車41には第2回転チョッパ42(回転チョッパ)の中心部が固定してある。金属製の第2回転チョッパ42は第1回転駆動軸35の軸線に対して直交する平板状部材であり、その外形形状は円形である。さらに第2回転チョッパ42には第2開口部42aが形成してある。図1に示すように、第2回転チョッパ42の一部はランプ23と集光レンズ24を結ぶ直線上に位置する。   The first rotation drive shaft 35 is fixed with a gear gear (not shown) that is a component of a main gear mechanism (shown in the drawing but not described in detail), and the main gear mechanism further includes a chopper support member. Rotating chopper support gear gear 41 that is coaxial with 39 is linked. The central portion of the second rotating chopper 42 (rotating chopper) is fixed to the rotating chopper support gear gear 41. The metal second rotary chopper 42 is a flat plate-like member that is orthogonal to the axis of the first rotary drive shaft 35, and its outer shape is circular. Further, the second rotary chopper 42 is formed with a second opening 42a. As shown in FIG. 1, a part of the second rotating chopper 42 is located on a straight line connecting the lamp 23 and the condenser lens 24.

ベース部材31には取付板45を介して位相差モータ46が固定してある。位相差モータ46は取付板45に止めネジを介して固定した円筒形状のモータケース47と、一端側がモータケース47内に位置しかつ他端側がモータケース47の外側に突出するサブ出力軸48と、を具備している。モータケース47の内部には磁石やコイル等が内蔵してあり、このコイルに電流を流すとサブ出力軸48がモータケース47に対して自身の軸線周りに回転する。
サブ出力軸48にはサブギヤ機構(図中に記載されているが、詳しい説明は省略)が連係しており、さらにサブギヤ機構は回転チョッパ支持ギヤ歯車41に連係している。このサブギヤ機構は、サブ出力軸48が回転したときにサブ出力軸48の出力(回転力)を回転チョッパ支持ギヤ歯車41に伝達するものである(サブ出力軸48が回転するときもしないときも、サブギヤ機構はメインギヤ機構から回転チョッパ支持ギヤ歯車41への動力の伝達を妨げない)。
以上説明したベース部材31、メインステー33、ベアリング34、第1回転駆動軸35、チョッパ支持部材39、第1回転チョッパ40、回転チョッパ支持ギヤ歯車41、第2回転チョッパ42、取付板45、及び、位相差モータ46(図中に記載した上で説明を省略した、これらの部材と一体化した部材)がベース部材側ユニット49の構成要素である。
A phase difference motor 46 is fixed to the base member 31 via a mounting plate 45. The phase difference motor 46 includes a cylindrical motor case 47 fixed to the mounting plate 45 via a set screw, a sub output shaft 48 that has one end side positioned in the motor case 47 and the other end side protruding outside the motor case 47. Are provided. A magnet, a coil, and the like are built in the motor case 47, and when a current is passed through the coil, the sub output shaft 48 rotates around its own axis with respect to the motor case 47.
The sub output shaft 48 is linked to a sub gear mechanism (shown in the drawing, but detailed description is omitted), and the sub gear mechanism is linked to the rotating chopper support gear gear 41. This sub gear mechanism transmits the output (rotational force) of the sub output shaft 48 to the rotating chopper support gear gear 41 when the sub output shaft 48 rotates (whether the sub output shaft 48 rotates or not). The sub gear mechanism does not hinder the transmission of power from the main gear mechanism to the rotating chopper support gear gear 41).
Base member 31, main stay 33, bearing 34, first rotation drive shaft 35, chopper support member 39, first rotation chopper 40, rotation chopper support gear gear 41, second rotation chopper 42, mounting plate 45, and The phase difference motor 46 (a member integrated with these members, which has been described in the drawing and omitted from the description) is a component of the base member side unit 49.

ベース部材側ユニット49に対しては、チョッパモータ50(モータ支持用部材55)、連結部材62、フレキシブルジョイント70、及び、位置決め用ジョイント部材75を装着可能である。
チョッパモータ50は円筒形状のモータケース51と、一端側がモータケース51内に位置しかつ他端側がモータケース51の外側に突出するメイン出力軸52(出力軸)と、モータケース51に対して着脱可能なモータ支持用部材55と、を具備している。モータケース51の内部には磁石やコイル等が内蔵してあり、コイルに電流を流すとメイン出力軸52がモータケース51に対して自身の軸線周りに回転する。さらにモータケース51の内部には、メイン出力軸52を回転可能に支持するベアリングが設けてある。
A chopper motor 50 (motor supporting member 55), a connecting member 62, a flexible joint 70, and a positioning joint member 75 can be attached to the base member side unit 49.
The chopper motor 50 includes a cylindrical motor case 51, a main output shaft 52 (an output shaft) whose one end side is located inside the motor case 51 and the other end side projects outside the motor case 51, and is attached to and detached from the motor case 51. And a possible motor support member 55. A magnet, a coil, and the like are built in the motor case 51, and when a current is passed through the coil, the main output shaft 52 rotates about its own axis with respect to the motor case 51. Furthermore, a bearing that rotatably supports the main output shaft 52 is provided in the motor case 51.

モータ支持用部材55は両面が平面をなす板状部材である。モータ支持用部材55は、円板の一部を直線的に切断した非円形形状であり、周縁部の三カ所にはボルト逃げ用凹部56が凹設してある。さらにモータ支持用部材55の中心部には円形の中心貫通孔57が穿設してあり、中心貫通孔57の周辺部には3つの第一ネジ用孔58が周方向に並べて穿設してある。さらに中心貫通孔57と周縁部の間に位置する部分には、3つの第二ネジ用孔59が周方向に並べて穿設してある。またモータ支持用部材55には円柱形状の位置決め突起55aが一体的に突設してある。モータ支持用部材55は、中心貫通孔57にメイン出力軸52を挿入しながら自身の一方の平面をモータケース51の平坦な端面(モータ支持用部材55との対向面)に接触させた状態で、3つの第一ネジ用孔58にそれぞれ挿入した3本の止めネジ60を、モータケース51の端面に形成した3つの雌ネジ孔にそれぞれ螺合することにより、モータケース51の端面に固定してある。
連結部材62は、モータ支持用部材55と平行な平板状部材である。連結部材62は円板の一部を直線的に切断した非円形形状であり、その一方の面(ベース部材31側の面)は平面からなる当接平面62a(第二平面)である。連結部材62の他方の面(チョッパモータ50側の面)にはモータ支持用部材55の板厚と同じ深さの接続用凹部63が凹設してあり、接続用凹部63の周縁部には直線的に切断した部位以外を除いて外周壁64が形成してある。接続用凹部63の底面の中央部には円形の中央貫通孔65が穿設してある。接続用凹部63の底面には、周方向に並べて穿設した3つの雌ネジ孔66と、雌ネジ孔66とは周方向位置を変えて穿設した3つの位置調整用孔67と、一つの位置決め用長孔62bと、が形成してある。位置調整用孔67の径は、後述する位置調整用ネジ82の雄ネジ部(頭部以外の部分)より大径である。位置決め用長孔62bの短手寸法は位置決め突起55aの径と同一であり、位置決め用長孔62bの長手寸法は位置決め突起55aの径より大きい。
The motor support member 55 is a plate-like member whose both surfaces are flat. The motor support member 55 has a non-circular shape obtained by linearly cutting a part of a disk, and bolt escape recesses 56 are provided at three positions on the peripheral edge. Further, a circular central through hole 57 is formed at the center of the motor support member 55, and three first screw holes 58 are formed along the circumferential direction at the periphery of the central through hole 57. is there. Further, three second screw holes 59 are formed side by side in the circumferential direction at a portion located between the central through hole 57 and the peripheral edge. The motor support member 55 is integrally provided with a cylindrical positioning projection 55a. While the main output shaft 52 is inserted into the central through hole 57, the motor support member 55 is in a state where one flat surface thereof is in contact with the flat end surface of the motor case 51 (the surface facing the motor support member 55). The three set screws 60 respectively inserted into the three first screw holes 58 are respectively screwed into the three female screw holes formed on the end surface of the motor case 51 to be fixed to the end surface of the motor case 51. It is.
The connecting member 62 is a flat plate member parallel to the motor support member 55. The connecting member 62 has a non-circular shape obtained by linearly cutting a part of the disk, and one surface thereof (surface on the base member 31 side) is a flat contact surface 62a (second plane). A connecting recess 63 having the same depth as the thickness of the motor support member 55 is formed on the other surface of the connecting member 62 (the surface on the chopper motor 50 side). An outer peripheral wall 64 is formed except for portions other than the portion cut linearly. A circular central through hole 65 is formed at the center of the bottom surface of the connection recess 63. On the bottom surface of the connecting recess 63, there are three female screw holes 66 formed side by side in the circumferential direction, three female position adjustment holes 67 formed by changing the circumferential position of the female screw hole 66, and one A positioning long hole 62b is formed. The diameter of the position adjusting hole 67 is larger than the male thread portion (portion other than the head) of the position adjusting screw 82 described later. The short dimension of the positioning long hole 62b is the same as the diameter of the positioning protrusion 55a, and the long dimension of the positioning long hole 62b is larger than the diameter of the positioning protrusion 55a.

略円筒形状をなすフレキシブルジョイント70の両端面には、互いに同軸(以下、「同軸」という場合は、厳密な同軸状態だけでなく、僅かに軸ズレした状態も含む意味である)をなす第一接続孔71と第二接続孔72が凹設してある。第一接続孔71は接続軸36に対して着脱可能な孔であり、接続軸36を嵌合すると接続軸36と第一接続孔71は相対回転不能になる。一方、第二接続孔72はメイン出力軸52の端部に対して着脱可能な孔であり、メイン出力軸52を嵌合するとメイン出力軸52と第二接続孔72は相対回転不能になる。周知のようにフレキシブルジョイント70は、接続軸36とメイン出力軸52の軸線の(僅かな)ズレを吸収しながら、メイン出力軸52の出力(回転力)を接続軸36に伝達する機能を有している。   The first and second ends of the flexible joint 70 having a substantially cylindrical shape are coaxial with each other (hereinafter referred to as “coaxial” includes not only a strict coaxial state but also a slightly displaced state). A connection hole 71 and a second connection hole 72 are recessed. The first connection hole 71 is a hole that can be attached to and detached from the connection shaft 36. When the connection shaft 36 is fitted, the connection shaft 36 and the first connection hole 71 are not rotatable relative to each other. On the other hand, the second connection hole 72 is a hole that can be attached to and detached from the end portion of the main output shaft 52. When the main output shaft 52 is fitted, the main output shaft 52 and the second connection hole 72 cannot be rotated relative to each other. As is well known, the flexible joint 70 has a function of transmitting the output (rotational force) of the main output shaft 52 to the connection shaft 36 while absorbing the (slight) misalignment between the connection shaft 36 and the main output shaft 52. doing.

略円筒形状の剛体である位置決め用ジョイント部材75の両端面には第一仮接続孔76と第二仮接続孔77が凹設してある。位置決め用ジョイント部材75は、第一仮接続孔76と第二仮接続孔77が同軸をなすように(第一仮接続孔76及び第二仮接続孔77の軸線が一直線上に位置するように)成形した部材である。第一仮接続孔76は第一接続孔71と同一仕様(接続軸36と嵌合する部位が同一仕様という意味であり、接続軸36と嵌合せず実質的に機能しない部位は第一接続孔71と同一仕様でなくてもよい。)であり、第二仮接続孔77は第二接続孔72と同一仕様(メイン出力軸52と嵌合する部位が同一仕様という意味であり、メイン出力軸52と嵌合せず実質的に機能しない部位は第二接続孔72と同一仕様でなくてもよい。)である。さらに第一仮接続孔76と第二仮接続孔77の(接続軸36とメイン出力軸52にそれぞれ嵌合する部位の)第1回転駆動軸35の軸線方向距離は互いに同一である。位置決め用ジョイント部材75はフレキシブルジョイント70と選択的に接続軸36とメイン出力軸52に対して接続可能な部材である。第一仮接続孔76は接続軸36に対して着脱可能な孔であり、接続軸36を嵌合すると接続軸36と第一仮接続孔76は相対回転可能になる。一方、第二仮接続孔77はメイン出力軸52の端部に対して着脱可能な孔であり、メイン出力軸52を嵌合するとメイン出力軸52と第二仮接続孔77は相対回転可能になる。   A first temporary connection hole 76 and a second temporary connection hole 77 are recessed in both end faces of the positioning joint member 75 which is a substantially cylindrical rigid body. The positioning joint member 75 is arranged so that the first temporary connection hole 76 and the second temporary connection hole 77 are coaxial (the axial lines of the first temporary connection hole 76 and the second temporary connection hole 77 are positioned in a straight line. ) Molded member. The first temporary connection hole 76 has the same specification as the first connection hole 71 (the part that fits the connection shaft 36 means the same specification, and the part that does not fit the connection shaft 36 and does not substantially function is the first connection hole. The second temporary connection hole 77 has the same specification as that of the second connection hole 72 (the part that fits into the main output shaft 52 means the same specification), and the main output shaft The part which does not fit with 52 and does not substantially function is not necessarily the same as the second connection hole 72). Furthermore, the axial distances of the first rotary drive shaft 35 of the first temporary connection hole 76 and the second temporary connection hole 77 (at the portions respectively fitted to the connection shaft 36 and the main output shaft 52) are the same. The positioning joint member 75 is a member that can be selectively connected to the flexible joint 70 to the connection shaft 36 and the main output shaft 52. The first temporary connection hole 76 is a hole that can be attached to and detached from the connection shaft 36. When the connection shaft 36 is fitted, the connection shaft 36 and the first temporary connection hole 76 can be rotated relative to each other. On the other hand, the second temporary connection hole 77 is a hole that can be attached to and detached from the end of the main output shaft 52. When the main output shaft 52 is fitted, the main output shaft 52 and the second temporary connection hole 77 can be rotated relative to each other. Become.

続いてベース部材側ユニット49に対して、位置決め用ジョイント部材75を利用しながらチョッパモータ50(モータ支持用部材55)、連結部材62、及び、フレキシブルジョイント70を組み付けて回転チョッパ駆動装置30を組み立てる要領について説明する。
まず3本の止めネジ60を利用してモータケース51とモータ支持用部材55を一体化し、モータ支持用部材55を連結部材62の接続用凹部63に嵌合し、さらに位置決め突起55aを位置決め用長孔62bに嵌合する。位置決め突起55aが位置決め用長孔62bに嵌合し、さらに上記したようにモータ支持用部材55及び接続用凹部63は非円形形状であるため、モータ支持用部材55と接続用凹部63は所定の回転方向位置(固定位置)においてのみ互い嵌合可能である。即ち、モータ支持用部材55の直線切断部と接続用凹部63(連結部材62)の直線切断部の周方向位置が一致する回転方向位置の一点においてのみ互いに嵌合可能であり、この位置で嵌合するとモータ支持用部材55は接続用凹部63に対してモータ支持用部材55が位置する平面方向に移動不能となる。
モータ支持用部材55と接続用凹部63を嵌合したら、モータ支持用部材55の各第二ネジ用孔59に挿入した3本の止めネジ80の雄ネジ部(頭部以外の部分)を連結部材62の各雌ネジ孔66に螺合し、各止めネジ80の頭部をモータ支持用部材55の表面に圧接させ、さらに各止めビス80の雄ネジ部の先端部を連結部材62(雌ネジ孔66)からベース部材側ユニット49側に突出させる。このように3本の止めネジ80を連結部材62の雌ネジ孔66に対して螺合すると、チョッパモータ50(モータ支持用部材55)、連結部材62、及び、止めネジ80が一体化する。
Subsequently, the chopper motor 50 (the motor support member 55), the connecting member 62, and the flexible joint 70 are assembled to the base member side unit 49 using the positioning joint member 75 to assemble the rotary chopper driving device 30. Explain the point.
First, the motor case 51 and the motor support member 55 are integrated using the three set screws 60, the motor support member 55 is fitted into the connection recess 63 of the connecting member 62, and the positioning projection 55a is positioned for positioning. It fits into the long hole 62b. Since the positioning protrusion 55a is fitted into the positioning long hole 62b, and the motor support member 55 and the connection recess 63 are non-circular as described above, the motor support member 55 and the connection recess 63 have a predetermined shape. They can be fitted to each other only at the rotational position (fixed position). In other words, they can be fitted to each other only at one point in the rotational position where the circumferential positions of the linear cutting part of the motor support member 55 and the linear cutting part of the connection concave part 63 (coupling member 62) coincide. In this case, the motor support member 55 cannot move in the plane direction in which the motor support member 55 is located with respect to the connection recess 63.
When the motor support member 55 and the connection recess 63 are fitted, the male screw portions (portions other than the head) of the three set screws 80 inserted into the second screw holes 59 of the motor support member 55 are connected. The female screw holes 66 of the member 62 are screwed together, the heads of the set screws 80 are brought into pressure contact with the surface of the motor support member 55, and the distal end portions of the male screw portions of the set screws 80 are connected to the connecting members 62 (female). From the screw hole 66), the base member side unit 49 is projected. When the three set screws 80 are screwed into the female screw holes 66 of the connecting member 62 in this way, the chopper motor 50 (motor support member 55), the connecting member 62, and the set screw 80 are integrated.

またチョッパモータ50、連結部材62、及び、止めネジ80の一体化作業と並行して(チョッパモータ50、連結部材62、及び、止めネジ80の一体化作業より前でも後でも同時でもよい)、位置決め用ジョイント部材75を収納孔32内に挿入して第一仮接続孔76を接続軸36に嵌合する。
さらに位置決め用ジョイント部材75を第1回転駆動軸35(接続軸36)に対して嵌合した後に、チョッパモータ50、連結部材62、及び、止めネジ80の一体物の3本の止めネジ80の端部(雌ネジ孔66から突出した部分)をベース部材31の各ネジ受容孔31bに遊嵌し、メイン出力軸52の端部を位置決め用ジョイント部材75の第二仮接続孔77に嵌合する。そして、ベース部材31の端面31cに対して連結部材62の当接平面62aが面接触するまで、メイン出力軸52の端部を位置決め用ジョイント部材75の第二仮接続孔77に対してさらに押し込む。
このようにして位置決め用ジョイント部材75を介して第1回転駆動軸35(接続軸36)とメイン出力軸52を同軸状態で接続した状態で、メイン出力軸52と接続軸36の一方又は双方を位置決め用ジョイント部材75に対して相対回転させながら連結部材62をベース部材31に対して相対回転させ(当接平面62aを端面31cに対して摺接させ)、ベース部材31側の3つの雌ネジ孔31aと連結部材62側の3つの位置調整用孔67をそれぞれ対向させる。3つの雌ネジ孔31aと連結部材62側の3つの位置調整用孔67をそれぞれ対向させたときに、対応する雌ネジ孔31aと位置調整用孔67どうしが完全に同心状態になるとは限らず、位置決め用ジョイント部材75の仕様によっては、雌ネジ孔31aと位置調整用孔67の中心どうしが互いに僅かにずれることがある。しかし両者の中心が僅かにずれた場合であっても、第1回転駆動軸35の軸線方向に見たときに雌ネジ孔31a全体が位置調整用孔67内に位置する。
次いで、モータ支持用部材55の各ボルト逃げ用凹部56を利用して3本の位置調整用ネジ82の雄ネジ部(頭部以外の部分)を連結部材62の3つの位置調整用孔67に挿入し、各ボルト逃げ用凹部56内に位置させた各位置調整用ネジ82の頭部を接続用凹部63の表面に当接させた上で、位置調整用ネジ82の各雄ネジ部を対応する雌ネジ孔31aにそれぞれ螺合する。すると、第1回転駆動軸35(接続軸36)とメイン出力軸52が同軸をなす状態で、チョッパモータ50(モータ支持用部材55)、連結部材62、及び、止めネジ80からなる一体物がベース部材側ユニット49に対して固定される。
Further, in parallel with the integration work of the chopper motor 50, the connecting member 62, and the set screw 80 (may be before or after the integration work of the chopper motor 50, the connecting member 62, and the set screw 80). The positioning joint member 75 is inserted into the storage hole 32 and the first temporary connection hole 76 is fitted to the connection shaft 36.
Further, after the positioning joint member 75 is fitted to the first rotation drive shaft 35 (connection shaft 36), the three set screws 80, which are an integrated body of the chopper motor 50, the connecting member 62, and the set screw 80, are provided. End portions (portions protruding from the female screw holes 66) are loosely fitted into the screw receiving holes 31b of the base member 31, and the end portions of the main output shaft 52 are fitted into the second temporary connection holes 77 of the positioning joint member 75. To do. Then, the end portion of the main output shaft 52 is further pushed into the second temporary connection hole 77 of the positioning joint member 75 until the contact surface 62a of the coupling member 62 comes into surface contact with the end surface 31c of the base member 31. .
In this way, with the first rotary drive shaft 35 (connection shaft 36) and the main output shaft 52 connected in a coaxial state via the positioning joint member 75, one or both of the main output shaft 52 and the connection shaft 36 are connected. While rotating relative to the positioning joint member 75, the coupling member 62 is rotated relative to the base member 31 (the contact flat surface 62a is slidably contacted with the end surface 31c), and three female screws on the base member 31 side are provided. The hole 31a and the three position adjusting holes 67 on the connecting member 62 side are opposed to each other. When the three female screw holes 31a and the three position adjusting holes 67 on the connecting member 62 side face each other, the corresponding female screw holes 31a and the position adjusting holes 67 are not necessarily completely concentric. Depending on the specifications of the positioning joint member 75, the centers of the female screw hole 31a and the position adjusting hole 67 may be slightly shifted from each other. However, even if the centers of both are slightly shifted, the entire female screw hole 31 a is located in the position adjusting hole 67 when viewed in the axial direction of the first rotation drive shaft 35.
Next, by using the bolt escape recesses 56 of the motor support member 55, the male screw portions (portions other than the head) of the three position adjustment screws 82 are inserted into the three position adjustment holes 67 of the connecting member 62. The head of each position adjusting screw 82 that is inserted and positioned in each bolt escape recess 56 is brought into contact with the surface of the connecting recess 63, and then each male screw portion of the position adjusting screw 82 is handled. Screwed into the female screw holes 31a. Then, in the state where the first rotation drive shaft 35 (connection shaft 36) and the main output shaft 52 are coaxial, an integrated object including the chopper motor 50 (motor support member 55), the connecting member 62, and the set screw 80 is obtained. It is fixed to the base member side unit 49.

次いで3本の止めネジ80を雌ネジ孔66との螺合を解除する方向に回転させて、各止めネジ80を雌ネジ孔66及び第二ネジ用孔59から取り除き、チョッパモータ50(モータ支持用部材55)を連結部材62から分離する。
すると連結部材62の中央貫通孔65が露出するので、中央貫通孔65を利用して位置決め用ジョイント部材75(第一仮接続孔76)を接続軸36(第1回転駆動軸35)から分離する。
さらに、位置決め用ジョイント部材75の代わりにフレキシブルジョイント70を中央貫通孔65を利用して収納孔32内に挿入し、フレキシブルジョイント70の第一接続孔71を第1回転駆動軸35に対して相対回転不能に嵌合する。
この状態で位置決め突起55aを位置決め用長孔62bに嵌合し、さらにチョッパモータ50と一体化しているモータ支持用部材55を連結部材62の接続用凹部63に対して上記した所定の回転方向位置(固定位置)において再び嵌合すると、メイン出力軸52と第1回転駆動軸35(接続軸36)の相対位置関係は、位置決め用ジョイント部材75をメイン出力軸52と第1回転駆動軸35(接続軸36)にそれぞれ接続したときのメイン出力軸52と第1回転駆動軸35(接続軸36)の相対位置関係と同一になる。即ち、メイン出力軸52は接続軸36(第1回転駆動軸35)と同軸をなす状態でフレキシブルジョイント70の第二接続孔72に対して相対回転不能に嵌合する。
最後に、3本の止めネジ80を各第二ネジ用孔59に挿入した上で連結部材62の各雌ネジ孔66にそれぞれ螺合すれば、チョッパモータ50(モータ支持用部材55)、連結部材62、及び、止めネジ80からなる一体物がベース部材側ユニット49に対して固定され回転チョッパ駆動装置30が完成する。
Next, the three set screws 80 are rotated in a direction to release the screwing with the female screw holes 66, and the set screws 80 are removed from the female screw holes 66 and the second screw holes 59, and the chopper motor 50 (motor support) is removed. Member 55) is separated from connecting member 62.
Then, since the central through hole 65 of the connecting member 62 is exposed, the positioning joint member 75 (first temporary connection hole 76) is separated from the connection shaft 36 (first rotation drive shaft 35) using the central through hole 65. .
Further, instead of the positioning joint member 75, the flexible joint 70 is inserted into the storage hole 32 using the central through hole 65, and the first connection hole 71 of the flexible joint 70 is relative to the first rotation drive shaft 35. Mates non-rotatably.
In this state, the positioning protrusion 55a is fitted into the positioning long hole 62b, and the motor support member 55 integrated with the chopper motor 50 is positioned at the predetermined rotational direction position described above with respect to the connection recess 63 of the connecting member 62. When the fitting is performed again at the (fixed position), the relative position relationship between the main output shaft 52 and the first rotation drive shaft 35 (connection shaft 36) is such that the positioning joint member 75 is connected to the main output shaft 52 and the first rotation drive shaft 35 ( The relative positional relationship between the main output shaft 52 and the first rotation drive shaft 35 (connection shaft 36) when connected to the connection shaft 36) is the same. That is, the main output shaft 52 is fitted to the second connection hole 72 of the flexible joint 70 so as not to rotate relative to the connection shaft 36 (the first rotation drive shaft 35).
Finally, after the three set screws 80 are inserted into the respective second screw holes 59 and screwed into the respective female screw holes 66 of the connecting member 62, the chopper motor 50 (the motor support member 55) and the connecting member are connected. The integral member including the member 62 and the set screw 80 is fixed to the base member side unit 49, and the rotary chopper driving device 30 is completed.

以上のようにして構成した回転チョッパ駆動装置30のチョッパモータ50及び位相差モータ46は、図2に示すように制御装置25と接続している。さらにケース21の外面に設けた操作パネルには手動調光/自動調光選択ボタンS1と位相差モータ制御ボタンS2が設けてあり、手動調光/自動調光選択ボタンS1、及び、位相差モータ制御ボタンS2はいずれも制御装置25と接続している。
さらに図2に示すように光源兼画像処理装置20(画像処理装置26)は、光源兼画像処理装置20とは別体である表示装置85と接続している。
The chopper motor 50 and the phase difference motor 46 of the rotary chopper driving device 30 configured as described above are connected to the control device 25 as shown in FIG. Further, the operation panel provided on the outer surface of the case 21 is provided with a manual dimming / auto dimming selection button S1 and a phase difference motor control button S2, and the manual dimming / auto dimming selection button S1 and the phase difference motor. All of the control buttons S2 are connected to the control device 25.
Further, as shown in FIG. 2, the light source / image processing device 20 (image processing device 26) is connected to a display device 85, which is a separate body from the light source / image processing device 20.

続いて電子内視鏡10、光源兼画像処理装置20、及び、表示装置85の動作について説明する。
電子内視鏡10のコネクタ部14を光源兼画像処理装置20の接続孔22接続した上で、光源兼画像処理装置20のメインスイッチ(図示略)をON操作するとランプ23が点灯し、ランプ23の照明光が集光レンズ24側に向かう。さらに、このときシーソー式スイッチである手動調光/自動調光選択ボタンS1が「手動調光モード」側に押されている場合はチョッパモータ50が動作する(位相差モータ46は動作しない)。するとチョッパモータ50(メイン出力軸52)の出力(回転力)がフレキシブルジョイント70を介して第1回転駆動軸35に伝わるので、第1回転駆動軸35が自身の軸線周りに回転し、第1回転駆動軸35と一体化している第1回転チョッパ40が回転する。さらに第1回転駆動軸35の回転力をメインギヤ機構及び回転チョッパ支持ギヤ歯車41を介して受ける第2回転チョッパ42が、第1回転チョッパ40と同方向に同じ速度で回転する。そのため第1回転チョッパ40の第1開口部40aと第2回転チョッパ42の第2開口部42aが重なることにより形成される照明光透過孔の大きさが一定の大きさに保持され、第1回転チョッパ40及び第2回転チョッパ42(照明光透過孔)がランプ23から集光レンズ24側に向かう照明光を断続的に遮光する。
このように第1回転チョッパ40及び第2回転チョッパ42によって調光された照明光は、集光レンズ24によって集光されながらコネクタ部14の端面(ライトガイドファイバ17の端面である受光部)に供給されるので、照明光が上記照明レンズから電子内視鏡10の外部に照射される。
術者が電子内視鏡10の挿入部12を患者の体腔内に挿入すると、対物レンズ15を透過した観察像を撮像素子16が撮像し、上記画像信号用ケーブルが撮像素子16の撮像データを画像処理装置26に送信する。画像処理装置26に送られた撮像データは画像処理装置26によって画像処理された上で表示装置85に表示される。
Next, operations of the electronic endoscope 10, the light source / image processing device 20, and the display device 85 will be described.
When the connector 14 of the electronic endoscope 10 is connected to the connection hole 22 of the light source / image processing apparatus 20 and the main switch (not shown) of the light source / image processing apparatus 20 is turned on, the lamp 23 is turned on. Is directed to the condenser lens 24 side. Further, at this time, when the manual dimming / automatic dimming selection button S1 which is a seesaw type switch is pushed to the “manual dimming mode” side, the chopper motor 50 operates (the phase difference motor 46 does not operate). Then, since the output (rotational force) of the chopper motor 50 (main output shaft 52) is transmitted to the first rotation drive shaft 35 via the flexible joint 70, the first rotation drive shaft 35 rotates around its own axis, and the first The first rotation chopper 40 integrated with the rotation drive shaft 35 rotates. Further, the second rotary chopper 42 that receives the rotational force of the first rotary drive shaft 35 via the main gear mechanism and the rotary chopper support gear gear 41 rotates in the same direction as the first rotary chopper 40 at the same speed. For this reason, the size of the illumination light transmission hole formed by overlapping the first opening 40a of the first rotating chopper 40 and the second opening 42a of the second rotating chopper 42 is kept constant, and the first rotation The chopper 40 and the second rotating chopper 42 (illumination light transmission hole) intermittently shield the illumination light from the lamp 23 toward the condenser lens 24.
The illumination light modulated by the first rotary chopper 40 and the second rotary chopper 42 in this way is collected by the condenser lens 24 while being collected on the end face of the connector part 14 (light receiving part which is the end face of the light guide fiber 17). Since the light is supplied, the illumination light is emitted from the illumination lens to the outside of the electronic endoscope 10.
When the surgeon inserts the insertion portion 12 of the electronic endoscope 10 into the body cavity of the patient, the imaging element 16 captures an observation image that has passed through the objective lens 15, and the image signal cable captures the imaging data of the imaging element 16. It transmits to the image processing device 26. The imaging data sent to the image processing device 26 is subjected to image processing by the image processing device 26 and then displayed on the display device 85.

表示装置85に表示された画像の輝度が高すぎる場合は、光源兼画像処理装置20の位相差モータ制御ボタンS2をON操作して位相差モータ46を回転させる。するとチョッパモータ50の回転力に加えて位相差モータ46の回転力が第2回転チョッパ42に伝達されるので、第2回転チョッパ42の回転速度が第1回転チョッパ40より速くなる。そのため上記照明光透過孔の大きさが徐々に変化するので、電子内視鏡10(ライトガイドファイバ17の端面)に供給される光量が徐々に変化する。
表示装置85に表示された画像の輝度が適切な状態になったときに位相差モータ制御ボタンS2をOFF操作すると、位相差モータ46が回転を停止するので、第2回転チョッパ42の回転速度が再び第1回転チョッパ40と同じ速度になる。そのため表示装置85に表示される画像の輝度が一定(所望値)に維持される。
When the brightness of the image displayed on the display device 85 is too high, the phase difference motor control button S2 of the light source and image processing device 20 is turned on to rotate the phase difference motor 46. Then, in addition to the rotational force of the chopper motor 50, the rotational force of the phase difference motor 46 is transmitted to the second rotational chopper 42, so that the rotational speed of the second rotational chopper 42 becomes faster than that of the first rotational chopper 40. For this reason, since the size of the illumination light transmitting hole gradually changes, the amount of light supplied to the electronic endoscope 10 (the end face of the light guide fiber 17) gradually changes.
If the phase difference motor control button S2 is turned OFF when the brightness of the image displayed on the display device 85 is in an appropriate state, the phase difference motor 46 stops rotating, and therefore the rotation speed of the second rotation chopper 42 is increased. Again, the speed is the same as that of the first rotating chopper 40. Therefore, the luminance of the image displayed on the display device 85 is maintained constant (desired value).

一方、上記操作パネルに設けた輝度設定ボタンを操作して「設定輝度」を入力した上で、手動調光/自動調光選択ボタンS1を「自動調光モード」側に切り換えると、チョッパモータ50及び位相差モータ46が回転して上記照明光透過孔の大きさが徐々に変化し、表示装置85に表示された画像の輝度が変化する。そして画像処理装置26が、撮像素子16から送られる撮像データ中の輝度信号に基づいて輝度が「設定輝度」と等しくなったと判断すると、画像処理装置26が位相差モータ46の回転を停止させ、表示装置85に表示される画像の輝度を一定(設定輝度)に維持する。
内視鏡術が終了したら光源兼画像処理装置20の上記メインスイッチをOFF操作する。するとランプ23が消灯し、さらにチョッパモータ50(及び位相差モータ46)が回転を停止する。
On the other hand, when the manual setting / automatic dimming selection button S1 is switched to the “auto dimming mode” side after the “setting luminance” is input by operating the luminance setting button provided on the operation panel, the chopper motor 50 is switched. As the phase difference motor 46 rotates, the size of the illumination light transmitting hole gradually changes, and the brightness of the image displayed on the display device 85 changes. When the image processing device 26 determines that the luminance is equal to the “set luminance” based on the luminance signal in the imaging data sent from the image sensor 16, the image processing device 26 stops the rotation of the phase difference motor 46, The brightness of the image displayed on the display device 85 is kept constant (set brightness).
When the endoscopy is completed, the main switch of the light source / image processing apparatus 20 is turned off. Then, the lamp 23 is turned off, and the chopper motor 50 (and the phase difference motor 46) stops rotating.

以上説明した本実施形態の光源兼画像処理装置20は、位置決め用ジョイント部材75を利用して回転チョッパ駆動装置30を組み立てているので、接続軸36(第1回転駆動軸35)とメイン出力軸52は互いに完全な同軸状態又は僅かに軸ズレした状態でフレキシブルジョイント70を介して接続される。このように接続軸36とメイン出力軸52の位置ズレ量をフレキシブルジョイント70の許容可能範囲に収めながら、接続軸36とメイン出力軸52をフレキシブルジョイント70を介して接続しているので、チョッパモータ50のメイン出力軸52を回転させたときにメイン出力軸52の振動が大きくなることがなく、メイン出力軸52の振動を小さく抑えることが可能である。そのためモータケース51の内部に設けた(メイン出力軸52を回転可能に支持するための)上記ベアリングを破損し難くすることが可能である。   Since the light source and image processing device 20 of the present embodiment described above assembles the rotary chopper drive device 30 using the positioning joint member 75, the connection shaft 36 (first rotary drive shaft 35) and the main output shaft are assembled. 52 are connected to each other through the flexible joint 70 in a state of being completely coaxial or slightly shifted from each other. In this way, the connection shaft 36 and the main output shaft 52 are connected via the flexible joint 70 while keeping the amount of positional deviation between the connection shaft 36 and the main output shaft 52 within the allowable range of the flexible joint 70. Therefore, the chopper motor When the 50 main output shafts 52 are rotated, the vibration of the main output shaft 52 does not increase, and the vibration of the main output shaft 52 can be suppressed small. Therefore, it is possible to make it difficult to damage the bearing (for rotatably supporting the main output shaft 52) provided in the motor case 51.

以上、上記実施形態を利用して本発明を説明したが、本発明は様々な変形を施しながら実施可能である。
例えば、ベース部材31の端面31cにチョッパモータ50側に向かって突出する3本の位置調整用ネジを固定し、各位置調整用ネジを連結部材62の位置調整用孔67に遊嵌させると共にモータ支持用部材55に形成した3つの貫通孔(ボルト逃げ用凹部56の代わりに形成した貫通孔)に挿入し、モータ支持用部材55の表面側から位置調整用ネジの各先端部に3つのナット(雌ネジ孔)をそれぞれ螺合させ、各ナットをモータ支持用部材55の表面に圧接させてもよい。この変形例によっても、位置決め用ジョイント部材75を利用しながら回転チョッパ駆動装置30を組み立てることが可能である。
さらに雌ネジ孔31a、ボルト逃げ用凹部56、位置調整用孔67、位置調整用ネジ82(並びに、上記変形例の上記位置調整用ネジ、上記貫通孔、及び、上記ナット)は3つ以外の複数であってもよい。
さらにモータケース51とモータ支持用部材55を一体成形してもよい。
As mentioned above, although this invention was demonstrated using the said embodiment, this invention can be implemented, giving various deformation | transformation.
For example, three position adjustment screws protruding toward the chopper motor 50 side are fixed to the end surface 31c of the base member 31, and each position adjustment screw is loosely fitted in the position adjustment hole 67 of the connecting member 62 and the motor. Three nuts are inserted into the three through holes formed in the support member 55 (through holes formed in place of the bolt escape recesses 56) from the surface side of the motor support member 55 to each tip of the position adjusting screw. (Female thread hole) may be screwed together, and each nut may be pressed against the surface of the motor support member 55. Also according to this modification, it is possible to assemble the rotary chopper driving device 30 while using the positioning joint member 75.
Furthermore, the female screw hole 31a, the bolt escape recess 56, the position adjustment hole 67, the position adjustment screw 82 (and the position adjustment screw, the through hole, and the nut of the above modification) are other than three. There may be a plurality.
Further, the motor case 51 and the motor support member 55 may be integrally formed.

10 電子内視鏡(内視鏡)
11 操作部
12 挿入部
13 ユニバーサルチューブ
14 コネクタ部
15 対物レンズ
16 撮像素子
17 ライトガイドファイバ(受光部)
20 光源兼画像処理装置
21 ケース
22 接続孔
23 ランプ(光源)
24 集光レンズ
25 制御装置
26 画像処理装置
30 回転チョッパ駆動装置
31 ベース部材
31a 雌ネジ孔
31b ネジ受容孔
31c 端面(第一平面)
32 収納孔
33 メインステー
34 ベアリング
35 第1回転駆動軸(回転駆動軸)
36 接続軸(接続部)
39 チョッパ支持部材
40 第1回転チョッパ(回転チョッパ)
40a 第1開口部
41 回転チョッパ支持ギヤ歯車
42 第2回転チョッパ(回転チョッパ)
42a 第2開口部
45 取付板
46 位相差モータ
47 モータケース
48 サブ出力軸
49 ベース部材側ユニット
50 チョッパモータ(モータ)
51 モータケース
52 メイン出力軸(出力軸)
55 モータ支持用部材
55a 位置決め突起
56 ボルト逃げ用凹部
57 中心貫通孔
58 第一ネジ用孔
59 第二ネジ用孔
60 止めネジ
62 連結部材
62a 当接平面(第二平面)
62b 位置決め用長孔
63 接続用凹部
64 外周壁
65 中央貫通孔
66 雌ネジ孔
67 位置調整用孔
70 フレキシブルジョイント
71 第一接続孔
72 第二接続孔
75 位置決め用ジョイント部材
76 第一仮接続孔
77 第二仮接続孔
80 止めネジ
82 位置調整用ネジ
85 表示装置(ディスプレイ)
S1 手動調光/自動調光選択ボタン
S2 位相差モータ制御ボタン
10 Electronic endoscope (endoscope)
DESCRIPTION OF SYMBOLS 11 Operation part 12 Insertion part 13 Universal tube 14 Connector part 15 Objective lens 16 Imaging element 17 Light guide fiber (light-receiving part)
20 Light source and image processing device 21 Case 22 Connection hole 23 Lamp (light source)
24 condensing lens 25 control device 26 image processing device 30 rotating chopper driving device 31 base member 31a female screw hole 31b screw receiving hole 31c end face (first plane)
32 Storage hole 33 Main stay 34 Bearing 35 First rotation drive shaft (rotation drive shaft)
36 Connection shaft (connection part)
39 Chopper support member 40 First rotary chopper (rotary chopper)
40a First opening 41 Rotating chopper support gear gear 42 Second rotating chopper (rotating chopper)
42a Second opening 45 Mounting plate 46 Phase difference motor 47 Motor case 48 Sub output shaft 49 Base member side unit 50 Chopper motor (motor)
51 Motor case 52 Main output shaft (output shaft)
55 Motor support member 55a Positioning projection 56 Bolt escape recess 57 Center through hole 58 First screw hole 59 Second screw hole 60 Set screw 62 Connecting member 62a Contact plane (second plane)
62b Positioning long hole 63 Connecting recess 64 Outer wall 65 Central through hole 66 Female screw hole 67 Position adjusting hole 70 Flexible joint 71 First connection hole 72 Second connection hole 75 Positioning joint member 76 First temporary connection hole 77 Second temporary connection hole 80 Set screw 82 Position adjusting screw 85 Display device (display)
S1 Manual dimming / auto dimming selection button S2 Phase difference motor control button

Claims (5)

内視鏡の受光部に対して照明光を供給する光源から離間するベース部材と、
該ベース部材に支持した、その軸線回りに回転可能な回転駆動軸と、
該回転駆動軸に支持した、上記光源と上記受光部の間で回転することにより、上記照明光を断続的に遮光する回転チョッパと、
上記ベース部材に着脱可能で、かつ出力軸を有するモータと、
互いに上記軸線方向に対向した状態の上記回転駆動軸及び上記出力軸に対してそれぞれ着脱可能で、共に一直線上に位置する第一仮接続部及び第二仮接続部を有する位置決め用ジョイント部材と、
上記第一仮接続部及び上記仮第二接続部とそれぞれ同一仕様で両者の相対位置関係が上記第一仮接続部と上記第二仮接続部の相対位置関係と同一である第一接続部及び第二接続部を、上記回転駆動軸及び上記出力軸に対して上記位置決め用ジョイント部材と選択的に着脱可能なフレキシブルジョイントと、
上記モータとは所定の固定位置でのみ互いに固定可能で、かつ、上記ベース部材とは上記軸線に対して直交する平面上の位置を変えながら固定可能である、上記モータ及び上記ベース部材に対して着脱可能な連結部材と、
を備えることを特徴とする内視鏡用光源装置における回転チョッパ駆動装置。
A base member that is separated from a light source that supplies illumination light to a light receiving portion of the endoscope;
A rotation drive shaft supported by the base member and rotatable about its axis;
A rotating chopper that is supported by the rotation drive shaft and intermittently blocks the illumination light by rotating between the light source and the light receiving unit;
A motor detachably attached to the base member and having an output shaft;
A positioning joint member having a first temporary connection portion and a second temporary connection portion, which are detachable from the rotational drive shaft and the output shaft in a state of being opposed to each other in the axial direction, and both are located on a straight line;
A first connection part having the same specifications as the first temporary connection part and the temporary second connection part, and a relative positional relationship between the first temporary connection part and the second temporary connection part; A flexible joint that is selectively attachable to and detachable from the positioning joint member with respect to the rotary drive shaft and the output shaft;
With respect to the motor and the base member, which can be fixed to each other only at a predetermined fixing position with the motor, and can be fixed while changing the position on the plane perpendicular to the axis with the base member. A detachable connecting member;
A rotary chopper driving device in an endoscope light source device.
内視鏡の受光部に対して照明光を供給する光源から離間するベース部材と、
該ベース部材に支持した、その軸線回りに回転可能な回転駆動軸と、
該回転駆動軸に支持した、上記光源と上記受光部の間で回転することにより、上記照明光を断続的に遮光する回転チョッパと、
上記ベース部材に着脱可能で、かつ出力軸を有するモータと、
上記モータとは所定の固定位置でのみ互いに固定可能で、かつ、上記ベース部材とは上記軸線に対して直交する平面上の位置を変えながら固定可能である、上記モータ及び上記ベース部材に対して着脱可能な連結部材と、
上記回転駆動軸と上記出力軸を上記軸線方向に対向させながら上記連結部材を上記モータ及び上記ベース部材に固定した状態で、上記回転駆動軸及び上記出力軸に対して着脱可能に接続するフレキシブルジョイントと、
を備えることを特徴とする内視鏡用光源装置における回転チョッパ駆動装置。
A base member that is separated from a light source that supplies illumination light to a light receiving portion of the endoscope;
A rotation drive shaft supported by the base member and rotatable about its axis;
A rotating chopper that is supported by the rotation drive shaft and intermittently blocks the illumination light by rotating between the light source and the light receiving unit;
A motor detachably attached to the base member and having an output shaft;
With respect to the motor and the base member, which can be fixed to each other only at a predetermined fixing position with the motor, and can be fixed while changing the position on the plane perpendicular to the axis with the base member. A detachable connecting member;
A flexible joint that is detachably connected to the rotation drive shaft and the output shaft in a state where the connecting member is fixed to the motor and the base member while the rotation drive shaft and the output shaft are opposed to each other in the axial direction. When,
A rotary chopper driving device in an endoscope light source device.
請求項1または2記載の内視鏡用光源装置における回転チョッパ駆動装置において、
上記ベース部材の上記モータとの対向面に、上記軸線に対して直交する第一平面を形成し、
上記モータの上記ベース部材との対向面に、上記第一平面と平行でかつ該第一平面に対して摺接可能な第二平面を形成した内視鏡用光源装置における回転チョッパ駆動装置。
In the rotary chopper drive device in the endoscope light source device according to claim 1 or 2,
Forming a first plane perpendicular to the axis on the surface of the base member facing the motor;
A rotating chopper driving device in an endoscope light source device, wherein a second plane parallel to the first plane and slidable against the first plane is formed on a surface of the motor facing the base member.
請求項1から3のいずれか1項記載の内視鏡用光源装置における回転チョッパ駆動装置において、
上記ベース部材に雌ネジ孔を形成し、かつ、上記モータに該雌ネジ孔と螺合可能な位置調整用ネジを取付可能とするか、又は、上記ベース部材に位置調整用ネジを突設し、かつ、上記モータに該位置調整用ネジが螺合するナットを取付可能とし、
上記連結部材に、上記位置調整用ネジの雄ネジ部より大径で該雄ネジ部が貫通する位置調整用孔を形成した内視鏡用光源装置における回転チョッパ駆動装置。
In the rotary chopper drive device in the endoscope light source device according to any one of claims 1 to 3,
A female screw hole is formed in the base member, and a position adjusting screw that can be screwed into the female screw hole can be attached to the motor, or a position adjusting screw is protruded from the base member. And, it is possible to attach a nut to which the position adjusting screw is screwed to the motor,
A rotating chopper driving device in an endoscope light source device, wherein the connecting member is formed with a position adjusting hole having a diameter larger than the male screw portion of the position adjusting screw and through which the male screw portion passes.
内視鏡の受光部に対して照明光を供給する光源から離間するベース部材と、
該ベース部材に支持した、その軸線回りに回転可能な回転駆動軸と、
該回転駆動軸に支持した、上記光源と上記受光部の間で回転することにより、上記照明光を断続的に遮光する回転チョッパと、
上記回転駆動軸と上記軸線方向に離間しながら対向する出力軸を有する、上記ベース部材に対して着脱可能なモータと、
上記回転駆動軸と上記出力軸に対してそれぞれ接続することにより、上記出力軸の出力を上記回転駆動軸に伝達するフレキシブルジョイントと、
を備える内視鏡用光源装置における回転チョッパ駆動装置の組立方法であって、
上記ベース部材と分離した上記モータに対して、上記モータ及び上記ベース部材とは別体の連結部材を所定の固定位置で着脱可能に固定するステップ、
上記軸線方向に対向させた上記回転駆動軸及び上記出力軸に対して、位置決め用ジョイント部材に形成した共に一直線上に位置する第一仮接続部及び第二仮接続部をそれぞれ接続し、かつ、上記ベース部材と上記連結部材の対向面どうしを接触させるステップ、
上記ベース部材と上記連結部材を固定するステップ、
上記モータを上記連結部材から分離し、かつ、上記位置決め用ジョイント部材の上記第一仮接続部及び上記第二仮接続部を上記回転駆動軸及び上記出力軸から分離するステップ、
上記フレキシブルジョイントに形成した上記第一仮接続部と同一仕様の第一接続部を、上記回転駆動軸に接続するステップ、
上記フレキシブルジョイントに形成した上記第二仮接続部と同一仕様でかつ上記第一接続部との相対位置関係が上記第一仮接続部と上記第二仮接続部の相対位置関係と同一である第二接続部を、上記出力軸に接続するステップ、及び、
上記モータを上記連結部材に対して上記固定位置で固定するステップ
を有することを特徴とする内視鏡用光源装置における回転チョッパ駆動装置の組立方法。
A base member that is separated from a light source that supplies illumination light to a light receiving portion of the endoscope;
A rotation drive shaft supported by the base member and rotatable about its axis;
A rotating chopper that is supported by the rotation drive shaft and intermittently blocks the illumination light by rotating between the light source and the light receiving unit;
A motor detachably attached to the base member, having an output shaft facing the rotary drive shaft while being spaced apart in the axial direction;
A flexible joint that transmits the output of the output shaft to the rotary drive shaft by connecting to the rotary drive shaft and the output shaft;
An assembly method of a rotary chopper driving device in an endoscope light source device comprising:
A step of detachably fixing a connecting member separate from the motor and the base member to the motor separated from the base member at a predetermined fixing position;
A first temporary connection portion and a second temporary connection portion, which are formed on the positioning joint member and are positioned on a straight line, are connected to the rotational drive shaft and the output shaft opposed to each other in the axial direction, and Contacting the opposing surfaces of the base member and the connecting member;
Fixing the base member and the connecting member;
Separating the motor from the coupling member, and separating the first temporary connection portion and the second temporary connection portion of the positioning joint member from the rotary drive shaft and the output shaft;
Connecting the first connection part having the same specifications as the first temporary connection part formed on the flexible joint to the rotary drive shaft;
The second specification has the same specifications as the second temporary connection portion formed on the flexible joint, and the relative positional relationship with the first connection portion is the same as the relative positional relationship between the first temporary connection portion and the second temporary connection portion. Connecting two connections to the output shaft; and
A method of assembling a rotary chopper driving device in an endoscope light source device, comprising: fixing the motor to the connecting member at the fixed position.
JP2012213337A 2012-09-27 2012-09-27 Rotating chopper driving device in endoscope light source device, and assembling method of rotating chopper driving device in endoscope light source device Expired - Fee Related JP6055639B2 (en)

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