JP2002078677A - Cable structure for electronic endoscope - Google Patents
Cable structure for electronic endoscopeInfo
- Publication number
- JP2002078677A JP2002078677A JP2000270952A JP2000270952A JP2002078677A JP 2002078677 A JP2002078677 A JP 2002078677A JP 2000270952 A JP2000270952 A JP 2000270952A JP 2000270952 A JP2000270952 A JP 2000270952A JP 2002078677 A JP2002078677 A JP 2002078677A
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- Prior art keywords
- shield
- cable
- core
- electronic endoscope
- wire
- Prior art date
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は電子内視鏡のケーブ
ル構造に係り、特に電子内視鏡に設けられた固体撮像素
子（ＣＣＤ）から映像信号を送信する電子内視鏡のケー
ブル構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable structure of an electronic endoscope, and more particularly to a cable structure of an electronic endoscope for transmitting a video signal from a solid-state image pickup device (CCD) provided in the electronic endoscope.
【０００２】[0002]
【従来の技術】電子内視鏡は、挿入部先端硬質部内に設
けられた撮像光学系の後方にＣＣＤが配置されている。
ＣＣＤはセラミック等からなる基板上に固着されてお
り、この基板には多数本の心線が各々所定の端子に接続
される。2. Description of the Related Art In an electronic endoscope, a CCD is arranged behind an image pickup optical system provided in a rigid portion at a distal end of an insertion portion.
The CCD is fixed on a substrate made of ceramic or the like, and a number of core wires are connected to predetermined terminals on the substrate.
【０００３】前記心線を導電性の編組シールドと非導電
性の外皮とからなるケーブル内に収束して多心ケーブル
を構成している。この多心ケーブルはプロセッサに接続
され、このプロセッサにより前記心線から電送されるＣ
ＣＤで光電変換された映像信号を信号処理し、被写体を
モニタ装置に表示する。[0003] A multi-core cable is constructed by converging the above-mentioned core wire into a cable composed of a conductive braided shield and a non-conductive sheath. The multi-core cable is connected to a processor, and the processor transmits C from the core.
The video signal photoelectrically converted by the CD is subjected to signal processing, and the subject is displayed on the monitor device.
【０００４】ところで、前記多心ケーブルは、図４に示
すように、心線１を絶縁テープ９で巻回し、さらに導電
性の編組シールド２と非導電性の外皮３とで被覆して構
成される。編組シールド２は、内視鏡挿入部内でアース
線４に接続され、前記外皮３は、アース線４と前記心線
１とを被覆するケーブル保護部材５に接続される。As shown in FIG. 4, the multi-core cable is formed by winding a core wire 1 with an insulating tape 9 and covering the core wire 1 with a conductive braided shield 2 and a non-conductive sheath 3. You. The braided shield 2 is connected to a ground wire 4 inside the endoscope insertion portion, and the outer cover 3 is connected to a cable protection member 5 that covers the ground wire 4 and the core wire 1.
【０００５】編組シールド２とアース線４との接続構造
は、例えば特開平６−２８５０２０号公報に記載されて
おり、図４は接続部基板側にケーブル保護部材がある場
合の応用形態で、編組シールド２を外皮３から延出させ
て撚り、この撚った部分にアース線４を半田付けする。
編組シールド２とアース線４との接続部の内側には、保
護チューブ６が心線１に外嵌されており、編組シールド
２やアース線４の端部がばらけた際、接触して心線１を
損傷させて短絡するのを防止する。また、編組シールド
２とアース線４との接続部には、２本の取付チューブ
７、８が外被されている。そして、保護チューブ６と取
付チューブ７によって編組シールド２とアース線４の接
続部付近を保持し、取付チューブ７、８によりケーブル
保護部材５を挟持する。これらの保護チューブ６、及び
取付チューブ７、８により、太さの異なる外皮３とケー
ブル保護部材５とが接続される。[0005] The connection structure between the braided shield 2 and the ground wire 4 is described in, for example, Japanese Patent Laid-Open No. 6-285020. FIG. The shield 2 is extended from the outer cover 3 and twisted, and the ground wire 4 is soldered to the twisted portion.
A protective tube 6 is fitted around the core 1 inside the connection between the braided shield 2 and the ground wire 4. When the ends of the braided shield 2 and the ground wire 4 come apart, they come into contact with each other. 1 to prevent a short circuit. Further, two attachment tubes 7 and 8 are jacketed at a connection portion between the braided shield 2 and the ground wire 4. Then, the vicinity of the connection between the braided shield 2 and the ground wire 4 is held by the protective tube 6 and the mounting tube 7, and the cable protecting member 5 is sandwiched by the mounting tubes 7 and 8. The outer cover 3 having a different thickness and the cable protective member 5 are connected by the protective tube 6 and the mounting tubes 7 and 8.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、従来の
ケーブル構造は、保護チューブ６と取付チューブ７、８
を必要とするので、その分、多心ケーブルが太くなると
いう欠点がある。However, the conventional cable structure comprises a protective tube 6 and mounting tubes 7 and 8.
Therefore, there is a disadvantage that the multi-core cable becomes thicker.
【０００７】電子内視鏡の挿入部には、前記多心ケーブ
ルの他に、鉗子チャンネル、フォーカス調整用のワイヤ
ガイド、アングル操作ワイヤ、及び送気・送水チャンネ
ル等が配設されており、前記多心ケーブルが太くなると
前記鉗子チャンネル等の配置スペースが制限されるの
で、多心ケーブルをできる限り細くしたいという要望が
ある。[0007] In addition to the multi-core cable, a forceps channel, a wire guide for focus adjustment, an angle operation wire, an air supply / water supply channel, and the like are provided in the insertion portion of the electronic endoscope. When the thickness of the multi-core cable becomes large, the space for disposing the forceps channel and the like is limited. Therefore, there is a demand to make the multi-core cable as thin as possible.
【０００８】本発明はこのような事情に鑑みて成された
もので、多心ケーブルを細くできる電子内視鏡のケーブ
ル構造を提供することを目的とする。The present invention has been made in view of such circumstances, and an object of the present invention is to provide a cable structure of an electronic endoscope that can make a multicore cable thin.
【０００９】[0009]
【課題を解決するための手段】本発明は前記目的を達成
するために、内視鏡挿入部に挿通配置されたケーブル
が、心線と、該心線を覆う導電性のシールドと、該シー
ルドを被覆する非導電性の被覆部材と、から構成され、
前記シールドがリード線に接続されるとともに、前記被
覆部材が前記リード線と前記心線を覆う保護部材に接続
される電子内視鏡のケーブル構造において、前記リード
線と前記シールドの接続部は、前記被覆部材の一部を切
り欠いて露出させたシールドに前記リード線が接続され
るとともに、前記保護部材を前記被覆部材に外嵌して、
前記リード線と前記シールドとの接続部が被覆されるこ
とを特徴としている。According to the present invention, in order to achieve the above object, a cable inserted through an endoscope insertion portion includes a core, a conductive shield covering the core, and a shield. And a non-conductive covering member for covering the
In the cable structure of an electronic endoscope in which the shield is connected to a lead wire and the covering member is connected to a protection member that covers the lead wire and the core wire, a connection portion between the lead wire and the shield is While the lead wire is connected to the shield which is exposed by cutting out a part of the covering member, the protection member is fitted around the covering member,
A connection portion between the lead wire and the shield is covered.
【００１０】本発明によれば、被覆部材を切り欠いて露
出させたシールドにリード線を接続したので、被覆部材
の切欠部内に、シールドとリード線との接続部が収容さ
れる。したがって、前記接続部がかさばらないので、ケ
ーブルを細くできる。According to the present invention, since the lead wire is connected to the shield, which is formed by cutting out and exposing the covering member, the connecting portion between the shield and the lead wire is accommodated in the notch portion of the covering member. Therefore, since the connecting portion is not bulky, the cable can be made thin.
【００１１】また、シールドとリード線との接続部を被
覆部材の切欠部内に配置したので、保護部材を被覆部材
に直接接続することができ、さらにシールドの端部及び
リード線先端部が直接心線に触れることを防止できる。
したがって、保護チューブ及び取付チューブが不要とな
り、その分、ケーブルを細くできる。Further, since the connecting portion between the shield and the lead wire is arranged in the notch of the covering member, the protecting member can be directly connected to the covering member. Touching the line can be prevented.
Therefore, the protection tube and the mounting tube are not required, and the cable can be made thinner.
【００１２】[0012]
【発明の実施の形態】以下添付図面に従って本発明に係
る電子内視鏡のケーブル構造の好ましい実施の形態につ
いて詳述する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a cable structure for an electronic endoscope according to the present invention will be described below in detail with reference to the accompanying drawings.
【００１３】図１は、本発明に係るケーブル構造が適用
された電子内視鏡の全体図である。同図に示すように、
電子内視鏡の挿入部先端硬質部３０内には撮像光学系３
２が配置され、この撮像光学系３２の後方には光路変換
用プリズム３４が配置される。前記プリズム３４の出射
端にはＣＣＤ３６が設けられると共に、このＣＣＤ３６
はセラミック等からなる基板３８上に固着されている。
前記基板３８には多数本の心線１２、１２…（図２参
照）が各々所定の端子に接続される。FIG. 1 is an overall view of an electronic endoscope to which a cable structure according to the present invention is applied. As shown in the figure,
The imaging optical system 3 is provided in the rigid portion 30 at the distal end of the insertion portion of the electronic endoscope.
2 is disposed, and an optical path changing prism 34 is disposed behind the imaging optical system 32. At the exit end of the prism 34, a CCD 36 is provided.
Are fixed on a substrate 38 made of ceramic or the like.
.. (See FIG. 2) are connected to predetermined terminals on the substrate 38, respectively.
【００１４】前記心線１２、１２…は、多心ケーブル１
０内に収束されて、プロセッサ４０に接続される。この
プロセッサ４０は、心線１２、１２…から伝送されるＣ
ＣＤ３６で光電変換された映像信号を信号処理し、被写
体像をモニタ装置４２に表示する。The core wires 12, 12...
Converged within 0 and connected to processor 40. The processor 40 receives the C transmitted from the cores 12, 12,...
The video signal photoelectrically converted by the CD 36 is subjected to signal processing, and a subject image is displayed on the monitor device 42.
【００１５】図２に示すように、前記多心ケーブル１０
は、前記心線１２を、導電性の編組シールド１６と、該
編組シールド１６を覆う被覆部材１８とで被覆して構成
される。被覆部材１８は、フッ素樹脂やポリ塩化ビニル
等の非導電性材料によって構成される。また、心線１２
と編組シールド１６との間には、ポリエステル製のシー
ルテープ等が心線１２を巻回するようにして構成された
絶縁体１４が介在されている。絶縁体１４は、編組シー
ルド１６より少し（ｔ）だけ長めに配置されており、編
組シールド１６の端部が直接心線１２に触れることによ
って心線１２が損傷し、短絡するのを防止できる。この
ように構成された多心ケーブル１０は、径が比較的小さ
いという特性があり、内視鏡挿入部の先端硬質部内や湾
曲部内に配置される。[0015] As shown in FIG.
Is configured by covering the core wire 12 with a conductive braided shield 16 and a covering member 18 covering the braided shield 16. The covering member 18 is made of a non-conductive material such as a fluororesin or polyvinyl chloride. In addition, core wire 12
Between the braided shield 16 and the braided shield 16, there is interposed an insulator 14 configured such that a polyester sealing tape is wound around the core wire 12. The insulator 14 is arranged to be slightly longer (t) than the braided shield 16, so that the end of the braided shield 16 directly touching the core 12 can prevent the core 12 from being damaged and short-circuited. The multi-core cable 10 configured as described above has a characteristic that the diameter is relatively small, and is arranged in the distal end hard portion or the curved portion of the endoscope insertion portion.
【００１６】これに対し、図２に示すように、多心ケー
ブル１０のＣＣＤが固着された基板（以下、ＣＣＤ基
板）側は、心線１２とアース線（リード線に相当）２４
とをケーブル保護部材２６で被覆して構成される。アー
ス線２４の先端部２４Ａは、編組シールド１６に接続さ
れ、アース線の基端部は、図示しないアース端子に接続
される。また、ケーブル保護部材２６は、シリコンチュ
ーブや熱収縮チューブによって構成される。このように
構成された多心ケーブル１０は可撓性が比較的大きいと
いう特性があり、内視鏡挿入部の軟性部内に配置され
る。On the other hand, as shown in FIG. 2, the side of the multi-core cable 10 on which the CCD is fixed (hereinafter referred to as CCD board) has a core wire 12 and a ground wire (corresponding to a lead wire) 24.
Are covered with a cable protection member 26. The distal end 24A of the ground wire 24 is connected to the braided shield 16, and the base end of the ground wire is connected to a ground terminal (not shown). Further, the cable protection member 26 is configured by a silicon tube or a heat shrink tube. The multi-core cable 10 configured as described above has a characteristic that the flexibility is relatively large, and is arranged in the flexible portion of the endoscope insertion portion.
【００１７】アース線２４と編組シールド１６との接続
構造は、図３に示すように、まず、被覆部材１８の端部
にコの字状の切欠溝１８Ａを形成し、編組シールド１６
を露出させる。そして、この編組シールド１６の露出し
た部分にアース線２４の先端部２４Ａを半田付けするこ
とにより、アース線２４の先端がばらけて直接心線１２
に触れることによって心線１２が損傷し、短絡するのを
防止できる。As shown in FIG. 3, the connection structure between the ground wire 24 and the braided shield 16 is as follows. First, a U-shaped notch groove 18A is formed at the end of the covering member 18, and the braided shield 16 is formed.
To expose. By soldering the tip 24A of the ground wire 24 to the exposed portion of the braided shield 16, the tip of the ground wire 24 is separated and the core wire 12 is removed.
Can prevent the core wire 12 from being damaged and short-circuited.
【００１８】次いで、ケーブル保護部材２６を、被覆部
材１８の端部に直接外嵌させた後、接着する。これによ
り、前記切欠溝１８Ａはケーブル保護部材２６によって
完全に被覆され、アース線２４と編組シールド１６との
接続部が保護される。Next, the cable protection member 26 is directly fitted to the end of the covering member 18 and then bonded. As a result, the cutout groove 18A is completely covered by the cable protection member 26, and the connection between the ground wire 24 and the braided shield 16 is protected.
【００１９】上記の如く構成されたケーブル構造によれ
ば、編組シールド１６とアース線２４との接続部が切欠
溝１８Ａの内部に収納されるので、前記接続部がかさば
らず、多心ケーブル１０を細くすることができる。According to the cable structure configured as described above, the connection between the braided shield 16 and the ground wire 24 is housed inside the cutout groove 18A, so that the connection is not bulky and the multicore cable 10 can be connected. Can be thin.
【００２０】また、前記接続部を切欠溝１８Ａ内に配置
したことによって、ケーブル保護部材２６を被覆部材１
８に直接外嵌させて接続することができるので、取付チ
ューブが不要になり、その分、多心ケーブル１０を細く
できる。Further, by arranging the connection portion in the notch groove 18A, the cable protection member 26 can
Since the connection can be made by directly fitting the cable 8 to the outside, a mounting tube is not required, and the multicore cable 10 can be made thinner accordingly.
【００２１】さらに、絶縁体１４を編組シールド１６よ
り少しだけ長めに配置し、また、前記接続部を切欠溝１
８Ａ内に配置したことによって、編組シールド１６の端
部及びアース線２４の先端部２４Ａが直接心線１２に接
触するのを防止でき、短絡防止用の保護チューブが不要
となるので、その分、多心ケーブル１０の接続部を細く
できる。Further, the insulator 14 is disposed slightly longer than the braided shield 16 and the connection portion is formed by the notch groove 1.
8A, the end of the braided shield 16 and the tip 24A of the ground wire 24 can be prevented from directly contacting the core 12, and a protective tube for preventing short circuit is not required. The connecting portion of the multicore cable 10 can be made thin.
【００２２】なお、本発明は、心線が導電性の編組シー
ルドと、この編組シールドを覆う非導電性の被覆部材と
によって被覆される構造の多心ケーブルであれば適用す
ることができる。The present invention can be applied to any multi-core cable having a structure in which the core is covered by a conductive braided shield and a non-conductive covering member covering the braided shield.
【００２３】[0023]
【発明の効果】以上説明したように本発明に係る電子内
視鏡のケーブル構造によれば、被覆部材を切り欠いて露
出させたシールドにリード線を接続し、被覆部材の切欠
部内に、シールドとリード線との接続部を収容したの
で、前記接続部がかさばらず、ケーブルを細くできる。As described above, according to the cable structure of the electronic endoscope according to the present invention, the lead wire is connected to the shield exposed by cutting out the covering member, and the shield is inserted into the notch of the covering member. Since the connection portion between the cable and the lead wire is accommodated, the connection portion is not bulky, and the cable can be made thin.
【００２４】また、シールドとリード線との接続部を被
覆部材の切欠部内に配置することによって、保護部材を
被覆部材に直接接続するとともに、シールドの端部及び
リード線先端部が直接心線に触れることを防止したの
で、保護チューブ及び取付チューブが不要となり、その
分、ケーブルを細くできる。Further, by arranging the connection between the shield and the lead wire in the notch of the covering member, the protection member is directly connected to the covering member, and the end of the shield and the tip of the lead wire are directly connected to the core wire. Since the touch tube is prevented from being touched, the protective tube and the mounting tube become unnecessary, and the cable can be made thinner.
【図１】本発明に係るケーブル構造が採用された電子内
視鏡を示す全体図FIG. 1 is an overall view showing an electronic endoscope employing a cable structure according to the present invention.
【図２】本発明に係るケーブル構造を示す断面図FIG. 2 is a sectional view showing a cable structure according to the present invention.
【図３】図２の矢印方向から見たケーブルの平面図FIG. 3 is a plan view of the cable viewed from the direction of the arrow in FIG. 2;
【図４】従来のケーブル構造を示す断面図FIG. 4 is a sectional view showing a conventional cable structure.
１０…多心ケーブル、１２…心線、１４…絶縁体、１６
…編組シールド、１８…被覆部材、１８Ａ…切欠部、２
４…アース線、２６…ケーブル保護部材10: multi-core cable, 12: core wire, 14: insulator, 16
... braided shield, 18 ... covering member, 18A ... notch, 2
4: Ground wire, 26: Cable protection member
Claims (2)
が、心線と、該心線を覆う導電性のシールドと、該シー
ルドを被覆する非導電性の被覆部材と、から構成され、
前記シールドがリード線に接続されるとともに、前記被
覆部材が前記リード線と前記心線を覆う保護部材に接続
される電子内視鏡のケーブル構造において、 前記リード線と前記シールドの接続部は、 前記被覆部材の一部を切り欠いて露出させたシールドに
前記リード線が接続されるとともに、前記保護部材を前
記被覆部材に外嵌して、前記リード線と前記シールドと
の接続部が被覆されることを特徴とする電子内視鏡のケ
ーブル構造。1. A cable inserted through an endoscope insertion portion, comprising: a core; a conductive shield covering the core; and a non-conductive covering member covering the shield.
In the cable structure of the electronic endoscope in which the shield is connected to a lead wire and the covering member is connected to a protection member that covers the lead wire and the core wire, a connection portion between the lead wire and the shield includes: The lead wire is connected to the shield in which a part of the covering member is cut out and exposed, and the protection member is fitted over the covering member to cover a connection portion between the lead wire and the shield. A cable structure for an electronic endoscope.
線を被覆するように絶縁体を介在させ、該絶縁体は前記
シールドの端部より延出させることを特徴とする請求項
１記載の電子内視鏡のケーブル構造。2. An insulator is interposed between the core and the shield so as to cover the core, and the insulator extends from an end of the shield. The cable structure of the electronic endoscope according to the above.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000270952A JP3821205B2 (en) | 2000-09-07 | 2000-09-07 | Cable structure of electronic endoscope |
| US09/946,539 US6595913B2 (en) | 2000-09-07 | 2001-09-06 | Cable structure in electronic endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000270952A JP3821205B2 (en) | 2000-09-07 | 2000-09-07 | Cable structure of electronic endoscope |
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| Publication Number | Publication Date |
|---|---|
| JP2002078677A true JP2002078677A (en) | 2002-03-19 |
| JP3821205B2 JP3821205B2 (en) | 2006-09-13 |
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| JP2000270952A Expired - Fee Related JP3821205B2 (en) | 2000-09-07 | 2000-09-07 | Cable structure of electronic endoscope |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021070386A1 (en) * | 2019-10-11 | 2021-04-15 | オリンパス株式会社 | Endoscope |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021070386A1 (en) * | 2019-10-11 | 2021-04-15 | オリンパス株式会社 | Endoscope |
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| Publication number | Publication date |
|---|---|
| JP3821205B2 (en) | 2006-09-13 |
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