JP3197120B2 - Endoscope barrel support structure - Google Patents
Endoscope barrel support structureInfo
- Publication number
- JP3197120B2 JP3197120B2 JP19423793A JP19423793A JP3197120B2 JP 3197120 B2 JP3197120 B2 JP 3197120B2 JP 19423793 A JP19423793 A JP 19423793A JP 19423793 A JP19423793 A JP 19423793A JP 3197120 B2 JP3197120 B2 JP 3197120B2
- Authority
- JP
- Japan
- Prior art keywords
- lens barrel
- support
- fixing screw
- endoscope
- hole
- 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.)
- Expired - Fee Related
Links
Landscapes
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
- Lens Barrels (AREA)
- Endoscopes (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は内視鏡用鏡胴支持構造、
特に先端部に配置されるレンズ鏡胴の支持構造に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a barrel support structure for an endoscope,
In particular, the present invention relates to a support structure for a lens barrel disposed at a distal end portion.
【０００２】[0002]
【従来の技術】電子内視鏡等の内視鏡では、被観察体を
光学的に捉えるためのレンズ群が組み込まれたレンズ鏡
胴が先端部に配置されており、このような従来の電子内
視鏡の先端部の構造が図３に示されている。図３におい
て、先端部１の観察窓２の後段にレンズ群３を有するレ
ンズ鏡胴４が取り付けられ、このレンズ鏡胴４にはプリ
ズム５を介してＣＣＤ（Charge Coupled Device ）６が
接続される。従って、上記レンズ群３により光学的に捉
えられた被観察体像はＣＣＤ６で結像することになり、
このＣＣＤ６で得られた画像信号に基づいて画像処理が
行われる。なお、上記先端部１には上記レンズ鏡胴４や
ＣＣＤ６の他に、鉗子等の処置具を導く処置具挿通チャ
ンネル７や不図示のライトガイド等が配設されている。2. Description of the Related Art In an endoscope such as an electronic endoscope, a lens barrel in which a lens group for optically capturing an object to be observed is incorporated is disposed at a distal end portion. FIG. 3 shows the structure of the distal end portion of the endoscope. In FIG. 3, a lens barrel 4 having a lens group 3 is attached to an end of the observation window 2 at a stage subsequent to the observation window 2, and a CCD (Charge Coupled Device) 6 is connected to the lens barrel 4 via a prism 5. . Therefore, the observed object image optically captured by the lens group 3 is formed by the CCD 6,
Image processing is performed based on the image signal obtained by the CCD 6. In addition, in addition to the lens barrel 4 and the CCD 6, a treatment tool insertion channel 7 for guiding a treatment tool such as forceps, a light guide (not shown), and the like are provided at the distal end portion 1.
【０００３】図４には、上記レンズ鏡胴４の取付け状態
が示されており、図示されるように、レンズ鏡胴４は支
持部８内に嵌合・収納された状態で、支持部８の壁内に
取り付けられた固定ネジ９により固定されている。FIG. 4 shows a state in which the lens barrel 4 is attached. As shown, the lens barrel 4 is fitted and stored in the Is fixed by a fixing screw 9 attached to the inside of the wall.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記従
来の内視鏡の鏡胴支持構造においては、図４に示される
ように、固定ネジ９の接触部とこれに対向する支持部８
内の壁の接触部の２点でレンズ鏡胴４が支持されること
になり、しっかりとした固定状態が得られないという問
題があった。即ち、上記２点の支持では、上記固定ネジ
９と上記壁接触部を結ぶ線に垂直の方向１００からの力
が加われば、レンズ鏡胴４が動き、光軸等がずれてしま
うことになる。このため、固定ネジ９をレンズ鏡胴４へ
強く締め付けることになるが、この場合は鏡胴４が歪ん
だり、深い傷が付いてしまう。しかも、上記の固定ネジ
９を強く締め付ける際に、光学的位置出しを終了したレ
ンズ鏡胴４の位置がずれてしまうという不都合もあっ
た。However, in the conventional barrel support structure for an endoscope, as shown in FIG. 4, a contact portion of a fixing screw 9 and a support portion 8 facing the contact portion.
Since the lens barrel 4 is supported at two points of the contact portion of the inner wall, there is a problem that a firmly fixed state cannot be obtained. That is, in the support at the two points, if a force from a direction 100 perpendicular to the line connecting the fixing screw 9 and the wall contact portion is applied, the lens barrel 4 moves and the optical axis and the like are shifted. . For this reason, the fixing screw 9 is strongly tightened to the lens barrel 4, but in this case, the lens barrel 4 is distorted or deeply scratched. In addition, when the fixing screw 9 is strongly tightened, there is also a disadvantage that the position of the lens barrel 4 whose optical positioning has been completed is shifted.
【０００５】図５には、円柱体の一般的な固定方法を内
視鏡へ応用した場合の例が示されている。即ち、図示の
レンズ鏡胴４は、支持部８内の２箇所から固定ネジ９，
１０により押し付け固定され、この固定ネジ９，１０と
これに対向する支持部８の内壁の３点で支持されてお
り、これによればレンズ鏡胴４の安定した固定状態が得
られる。しかし、この場合は異なる方向からの２本の固
定ネジ９，１０を使用するスペースが必要であり、先端
部１の細径化という重要な課題を有する内視鏡では採用
することができない。またこの場合、２本の固定ネジ
９，１０を均等に締め付ける必要があるが、この作業も
煩雑である。FIG. 5 shows an example in which a general fixing method of a cylindrical body is applied to an endoscope. That is, the lens barrel 4 shown in FIG.
The lens barrel 4 is pressed and fixed, and is supported at three points of the fixing screws 9 and 10 and the inner wall of the supporting portion 8 facing the fixing screws 9, whereby a stable fixing state of the lens barrel 4 is obtained. However, in this case, a space for using the two fixing screws 9 and 10 from different directions is required, and cannot be adopted in an endoscope having an important problem of reducing the diameter of the distal end portion 1. Further, in this case, it is necessary to uniformly tighten the two fixing screws 9 and 10, but this operation is also complicated.
【０００６】本発明は上記問題点に鑑みてなされたもの
であり、その目的は、細径化の障害となることなく、適
切な締め付け力により、レンズ鏡胴のしっかりとした固
定状態が得られる内視鏡用鏡胴支持構造を提供すること
にある。The present invention has been made in view of the above problems, and an object of the present invention is to obtain a firmly fixed state of a lens barrel by an appropriate tightening force without obstructing a reduction in diameter. An object of the present invention is to provide a lens barrel support structure for an endoscope.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に、本発明に係る内視鏡用鏡胴支持構造は、先端部の筒
状支持部内にレンズ鏡胴を取り付ける内視鏡において、
上記レンズ鏡胴に当接して押圧する固定ネジを上記支持
部壁に配置し、この固定ネジに対向する支持部壁にはそ
の内部のレンズ鏡胴へ向けて貫通する貫通孔を設け、こ
の貫通孔の外側の支持部内壁と上記固定ネジにより当該
レンズ鏡胴を３点支持することを特徴とする。In order to achieve the above object, an endoscope lens barrel support structure according to the present invention comprises a tube at the distal end.
In an endoscope in which a lens barrel is mounted in a cylindrical support,
The fixing screw the support that presses in contact with the lens barrel
Parts arranged in the wall, its the supporting wall opposed to the fixing screw
A through-hole is provided through the lens barrel inside the
And wherein the benzalkonium be supported at three points the <br/> lens barrel by the outer through-hole of the support portion inner wall and the fixing screw.
【０００８】[0008]
【作用】上記の構成によれば、支持部内にレンズ鏡胴を
嵌合させて１本の固定ネジにより適当な強さで締め付け
ることにより、この固定ネジ先端と貫通孔外側の支持部
内壁の３点でレンズ鏡胴が支持される。従って、１本の
固定ネジによりしっかりとした固定状態が得られると同
時に、レンズ鏡胴の固定支持のためにスペースを無駄に
使うこともない。SUMMARY OF] According to the arrangement, by tightening with a suitable strength by the lens barrel is fitted into the support portion and one fixing screw, and the through hole outer support portion the fixing screw tip
The lens barrel is supported at three points on the inner wall . Therefore, a firm fixing state can be obtained with one fixing screw, and at the same time, no space is wasted for fixing and supporting the lens barrel.
【０００９】[0009]
【実施例】図１には、実施例に係る内視鏡におけるレン
ズ鏡胴の支持部の構成が示されている。図示されるよう
に、実施例では内視鏡先端部においてレンズ群３を保持
したレンズ鏡胴４は、このレンズ鏡胴４の外周よりもや
や大きな嵌合孔１２を形成した支持部（レンズ枠）１３
が嵌合、挿入される。この支持部１３には、１本の固定
ネジ１４を螺合させるネジ孔１５が形成され、かつこの
ネジ孔１５に対向する支持部１３の嵌合孔１２の壁側に
円柱形の貫通孔１６が形成される。この貫通孔１６の大
きさは、レンズ鏡胴４の外周の大きさに応じて決定さ
れ、このレンズ鏡胴４を上記固定ネジ１４と貫通孔１６
の外側の２箇所の支持部内壁との３点で良好に支持でき
る半径とされる。なお。この貫通孔１６は円柱形以外の
例えば角柱形とすることができる。FIG. 1 shows the structure of a supporting portion of a lens barrel in an endoscope according to an embodiment. As shown, in the embodiment, the lens barrel 4 holding the lens group 3 at the distal end of the endoscope has a support portion (lens frame) having a fitting hole 12 formed slightly larger than the outer periphery of the lens barrel 4. ) 13
Are fitted and inserted. The support portion 13 is formed with a screw hole 15 into which one fixing screw 14 is screwed, and a cylindrical through hole 16 is formed in the wall of the fitting hole 12 of the support portion 13 facing the screw hole 15. Is formed. The size of the through-hole 16 is determined according to the size of the outer periphery of the lens barrel 4, the lens barrel 4 and the fixing screw 14 through hole 16
And a radius that can be favorably supported at three points with the two inner walls of the support portion outside the . In addition. The through hole 16 as possible out be, for example, prismatic non cylindrical.
【００１０】図２には、レンズ鏡胴４を取り付けた状態
が示されている。実際の部品組付け作業の際には、図の
支持部１３の嵌合孔１２にレンズ鏡胴４が挿入され、こ
のレンズ鏡胴４を前後に動かすことにより、光学的位置
出しのための調整が実施される。そして、この光学的調
整が終了すると、レンズ鏡胴４は固定ネジ１４で適切な
強さで締め付けられることになる。このとき、図示され
るように、固定ネジ１４は図のＡ点でレンズ鏡胴４を押
し付け、また押されたレンズ鏡胴４は図の貫通孔１６の
前側と後側の２箇所の支持部１３の内壁で受け止められ
る。従って、レンズ鏡胴４は１本の固定ネジ１４と貫通
孔１６外側の２箇所の支持部内壁の３点で固定支持さ
れ、しっかりとした固定状態が得られる。FIG. 2 shows a state in which the lens barrel 4 is attached. At the time of actual component assembling work, the lens barrel 4 is inserted into the fitting hole 12 of the supporting portion 13 shown in the drawing, and by moving the lens barrel 4 back and forth, adjustment for optical positioning is performed. Is performed. When the optical adjustment is completed, the lens barrel 4 is tightened by the fixing screw 14 with appropriate strength. At this time, as shown in the figure, the fixing screw 14 presses the lens barrel 4 at the point A in the figure, and the pushed lens barrel 4 is inserted into the through hole 16 in the figure.
It is received by the inner walls of the two support portions 13 on the front side and the rear side . Therefore, the lens barrel 4 penetrates with one fixing screw 14.
It is fixedly supported at three points on the inner wall of the support portion at two places outside the hole 16 , and a firm fixed state is obtained.
【００１１】これによれば、固定ネジ１４の対向する支
持部１３の壁に貫通孔１６を開けるだけで、レンズ鏡胴
４の３点支持が容易となる。また、図５のように２本の
固定ネジ９，１０を用いる必要がないので、図２で示さ
れる空間５０を有効に用いることができ、例えば図３で
示した処置具挿通チャンネルの配置場所とすること等に
より、内視鏡の細径化に貢献できる利点がある。According to this, three-point support of the lens barrel 4 becomes easy only by forming the through-hole 16 in the wall of the support portion 13 facing the fixing screw 14. In addition, since it is not necessary to use two fixing screws 9 and 10 as shown in FIG. 5, the space 50 shown in FIG. 2 can be used effectively. For example, the location of the treatment tool insertion channel shown in FIG. By doing so, there is an advantage that the endoscope can be reduced in diameter.
【００１２】[0012]
【発明の効果】以上説明したように、本発明によれば、
支持部内壁からレンズ鏡胴へ向けて固定ネジを配置し、
この固定ネジに対向する支持部内壁には貫通孔を形成
し、上記固定ネジと貫通孔外側の２箇所の支持部内壁に
てレンズ鏡胴を３点支持するようにしたので、適切な締
め付け力により、レンズ鏡胴をしっかりと固定支持する
ことが可能となり、鏡胴の歪み等も防止でき、また光学
的位置出し作業を煩雑にすることもない。しかも、細径
化に貢献できるという利点がある。As described above, according to the present invention,
Place a fixing screw from the inner wall of the support part to the lens barrel,
A through-hole is formed in the inner wall of the support section facing the fixing screw, and the inner wall of the support section at the two positions outside the fixing screw and the through-hole is formed.
As the lens barrel is supported at three points, it is possible to firmly fix and support the lens barrel with appropriate tightening force, prevent distortion of the lens barrel, and perform optical positioning work. There is no complication. Moreover, there is an advantage that the diameter can be reduced.
【図１】本発明の実施例に係る内視鏡用鏡胴支持構造を
示す斜視図である。FIG. 1 is a perspective view showing a lens barrel support structure for an endoscope according to an embodiment of the present invention.
【図２】実施例のレンズ鏡胴の取付け状態を示す断面図
である。FIG. 2 is a cross-sectional view showing a mounted state of the lens barrel of the embodiment.
【図３】従来の内視鏡先端部の構造を示す断面図であ
る。FIG. 3 is a cross-sectional view showing a structure of a conventional endoscope distal end portion.
【図４】従来のレンズ鏡胴の取付け状態を示す断面図で
ある。FIG. 4 is a cross-sectional view showing an attached state of a conventional lens barrel.
【図５】２本の固定ネジを用いた一般的な固定方法によ
るレンズ鏡胴の取付け状態を示す断面図である。FIG. 5 is a cross-sectional view showing an attached state of a lens barrel by a general fixing method using two fixing screws.
１ … 先端部、３ … レンズ群、４ … レンズ鏡
胴、１３ … 支持部、１４ … 固定ネジ、１６ …
貫通孔。DESCRIPTION OF SYMBOLS 1 ... Tip part, 3 ... Lens group, 4 ... Lens barrel, 13 ... Support part, 14 ... Fixing screw, 16 ...
Through holes .
Claims (1)
り付ける内視鏡において、上記レンズ鏡胴に当接して押圧する 固定ネジを上記支持
部壁に配置し、 この固定ネジに対向する支持部壁にはその内部のレンズ
鏡胴へ向けて貫通する貫通孔を設け、この貫通孔の外側
の支持部内壁と上記固定ネジにより当該レンズ鏡胴を３
点支持することを特徴とする内視鏡用鏡胴支持構造。1. A endoscope mounting the lens barrel to the cylindrical support portion of the distal end portion, the support fixing screws for pressing contact with the lens barrel
On the support wall facing the fixing screw and the lens inside
A through-hole is provided to penetrate toward the lens barrel.
The lens barrel is set at 3 by the inner wall of the support section and the fixing screw.
Endoscopic barrel support structure, wherein the point support to Turkey.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19423793A JP3197120B2 (en) | 1993-07-09 | 1993-07-09 | Endoscope barrel support structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19423793A JP3197120B2 (en) | 1993-07-09 | 1993-07-09 | Endoscope barrel support structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0727985A JPH0727985A (en) | 1995-01-31 |
| JP3197120B2 true JP3197120B2 (en) | 2001-08-13 |
Family
ID=16321263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19423793A Expired - Fee Related JP3197120B2 (en) | 1993-07-09 | 1993-07-09 | Endoscope barrel support structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3197120B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69514455T2 (en) | 1994-09-06 | 2000-08-10 | Toppan Printing Co Ltd | Composite container |
-
1993
- 1993-07-09 JP JP19423793A patent/JP3197120B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0727985A (en) | 1995-01-31 |
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