JPH0435853Y2 - - Google Patents
Info
- Publication number
- JPH0435853Y2 JPH0435853Y2 JP1985051605U JP5160585U JPH0435853Y2 JP H0435853 Y2 JPH0435853 Y2 JP H0435853Y2 JP 1985051605 U JP1985051605 U JP 1985051605U JP 5160585 U JP5160585 U JP 5160585U JP H0435853 Y2 JPH0435853 Y2 JP H0435853Y2
- Authority
- JP
- Japan
- Prior art keywords
- guide
- cell
- frame
- instrument
- fiberscope
- 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
Links
- 238000007689 inspection Methods 0.000 claims description 14
- 238000012544 monitoring process Methods 0.000 claims description 9
- 239000012857 radioactive material Substances 0.000 description 7
- 239000011324 bead Substances 0.000 description 4
- 230000002040 relaxant effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は例えば原子力施設における放射性物質
貯蔵タンク等を監視する場合に用いられるフアイ
バスコープ、工業用テレビカメラ等の検査用器具
の案内装置に関する。[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a guide device for inspection instruments such as fiberscopes and industrial television cameras used for monitoring radioactive material storage tanks in nuclear facilities, for example.
〔従来技術〕
例えば原子力施設における放射性物質貯蔵タン
ク等は使用中の破損、漏洩が重大事故につながる
虞があるために必要に応じて定期的に或いは随時
検査される。検査の方法は種々考えられるが、破
損の前兆例えば微細な亀裂はタンク等の表面に生
ずることが多いので目視によりタンク表面の状態
を監視することは有効な手段である。しかしなが
ら原子力施設における放射製物質貯蔵タンクはコ
ンクリート製の厚い壁のセル内に設けられてお
り、作業者は安全のためにセル内に入ることがで
きず、セル外より監視しなければならなかつた。[Prior Art] For example, radioactive material storage tanks and the like in nuclear facilities are inspected periodically or whenever necessary because damage or leakage during use may lead to serious accidents. Various inspection methods can be considered, but since signs of damage, such as minute cracks, often occur on the surface of tanks, etc., visually monitoring the condition of the tank surface is an effective means. However, radioactive material storage tanks at nuclear facilities are located inside cells with thick walls made of concrete, and for safety reasons, workers cannot enter the cells and must be monitored from outside the cells. .
このため従来は、タンクの溶接線等に沿つて予
め管状の案内具を配設しておき、該案内具内に、
セル外側よりフアイバスコープ等の検査用器具を
導入して移動させることによりタンクの溶接ビー
ドを観察するという方法が行われていた。 For this reason, conventionally, a tubular guide tool is placed in advance along the weld line etc. of the tank, and inside the guide tool,
The method used was to introduce an inspection instrument such as a fiberscope from outside the cell and move it to observe the weld bead on the tank.
〔考案が解決しようとする問題点〕
しかしながら、監視対象部が多くなれば、案内
具も多数配設しなければならず、各案内具へフア
イバスコープ等の検査用器具を導入するためには
セル側壁に多数の貫通孔を穿設する必要があり、
セル外への放射線の漏出の虞があつた。また監視
部位を変更する場合にはフアイバスコープ等の検
査用器具を挿入する案内具を変更しなければなら
ず一旦フアイバスコープをセル外側に引き出し、
改めてフアイバスコープ等の検査用器具を所定の
案内具に挿入しなけらばならないという煩わしさ
があつた。[Problem that the invention aims to solve] However, as the number of parts to be monitored increases, a large number of guide devices must be installed, and in order to introduce inspection instruments such as fiberscopes to each guide device, it is necessary to install a cell. It is necessary to drill many through holes in the side wall,
There was a risk of radiation leaking outside the cell. In addition, when changing the monitoring site, the guide tool for inserting the fiberscope or other inspection instrument must be changed, and the fiberscope must be pulled out to the outside of the cell.
There was the annoyance of having to insert the inspection instrument, such as the fiberscope, into a predetermined guide tool again.
本考案は斯かる事情に鑑みてなされたものであ
りフアイバスコープ又はテレビカメラ等の検査用
器具をその内部に導入して移動させるべく、複数
の監視対象に沿つて配設され、その各一端を整列
させた複数の案内具と、いずれかの案内具内に前
記検査用器具を導入すべくその一端を前記案内具
の前記各一端と選択的に対面するように配設され
た導入管部と、該導入管部の一端を所定の案内具
の一端に配置すべく案内移動する手段とを具備す
ることを特徴とする。
The present invention was developed in view of the above circumstances, and in order to introduce and move inspection instruments such as fiberscopes or television cameras into the interior of the instrument, the present invention is arranged along multiple monitoring targets, and one end of each of the inspection instruments is introduced and moved. a plurality of aligned guide tools; and an introduction pipe section disposed such that one end thereof selectively faces each end of the guide tool in order to introduce the testing instrument into any of the guide tools. , and a means for guiding and moving one end of the introduction pipe portion to place it at one end of a predetermined guide tool.
以下本考案を、その実施例を示す図面に基づい
て説明する。第1図は本考案に係る案内装置を用
いた原子力施設における放射性物質貯蔵タンクの
斜視図である。図において11は原子力施設から
の放射性物質を貯留する貯蔵タンクであり、該タ
ンク11はコンクリート製の厚い壁のセル12内
に設置されている。
The present invention will be described below based on drawings showing embodiments thereof. FIG. 1 is a perspective view of a radioactive material storage tank in a nuclear facility using a guide device according to the present invention. In the figure, 11 is a storage tank for storing radioactive materials from a nuclear facility, and the tank 11 is installed in a cell 12 with a thick wall made of concrete.
貯蔵タンク11表面における溶接ビードはフア
イバスコープを用いて監視されるようになつてお
り、セル12内には、タンク11の溶接ビードに
沿わせて、9本の案内具21が配設されている。
各案内具21の一端部はセルの一側壁に対向させ
て配設された切換装置30に取付けられおり、ま
た切換装置30にはセル12の側壁に取付けら
れ、セル12の外部と内部とを連通する貫通パイ
プ14の一端が連結されていて、セル12外部か
ら貫通パイプ14内にフアイバスコープ13(第
2図参照)を挿入すると、切換装置30により一
つの案内具21にフアイバスコープ13は導入さ
れてその案内具21に沿つてフアイバスコープ1
3は移動させられ、所定の部位を観察するように
なつている。 The weld bead on the surface of the storage tank 11 is monitored using a fiberscope, and nine guide tools 21 are arranged inside the cell 12 along the weld bead of the tank 11. .
One end of each guide 21 is attached to a switching device 30 disposed opposite to one side wall of the cell, and the switching device 30 is attached to the side wall of the cell 12 to connect the outside and inside of the cell 12. One end of the communicating through pipe 14 is connected, and when the fiber scope 13 (see FIG. 2) is inserted into the through pipe 14 from outside the cell 12, the fiber scope 13 is introduced into one guide tool 21 by the switching device 30. fiberscope 1 along the guiding tool 21.
3 is moved to observe a predetermined region.
第2図は、フアイバスコープ13を案内する案
内具21の斜視図であり、該案内具21は、線材
を螺旋管状に成形したものであり、その螺旋管の
軸方向に相隣する線材を適長離隔させて螺条間に
間〓を形成して、その螺旋管内を、その軸方向に
フアイバスコープ13が移動する。フアイバスコ
ープ13は従来の実施例と同構造のものであり、
イメージガイド、ライナガイドを内部に配した可
撓管13aの先端部に反射鏡を配し、イメージガ
イド、ライトガイドにて伝送される光、像を可撓
管13aの軸方向とは直角になるように屈曲さ
せ、案内具13の線材の間〓を通して所定の部位
を側視観察するようになつている。 FIG. 2 is a perspective view of a guide tool 21 that guides the fiberscope 13. The guide tool 21 is a wire rod formed into a spiral tube shape, and the wire rods adjacent to each other in the axial direction of the spiral tube are arranged in a suitable manner. The fiberscope 13 moves in the axial direction within the spiral tube with a gap formed between the spiral tubes at long distances. The fiberscope 13 has the same structure as the conventional embodiment,
A reflecting mirror is placed at the tip of a flexible tube 13a that has an image guide and a liner guide inside, and the light and image transmitted by the image guide and light guide are made perpendicular to the axial direction of the flexible tube 13a. The guide tool 13 is bent in such a manner that a predetermined region can be observed from the side through the space between the wires of the guide tool 13.
第3図は切換装置30の縦断面図である。切換
装置30は、取付部40と、切換部50とからな
り、取付部40は、セル12の一側壁内面とは若
干離隔させ、その側壁とは平行になるように矩形
の枠体41を床面に取付けており、枠体41内を
縦、横方向に各3分割して9個のマス目を形成し
ている。各マス目には、セル12内に配設された
9本の案内具21の各一端が夫々取付けられてお
り、各端面は平行になつている。 FIG. 3 is a longitudinal sectional view of the switching device 30. The switching device 30 consists of a mounting part 40 and a switching part 50, and the mounting part 40 is attached to a rectangular frame 41 on the floor so as to be slightly separated from the inner surface of one side wall of the cell 12 and parallel to the side wall. The inside of the frame 41 is divided into three vertically and horizontally to form nine squares. One end of each of the nine guide tools 21 disposed within the cell 12 is attached to each square, and the end surfaces thereof are parallel to each other.
取付部40とセル12内側面との間には、取付
部40に取付けられた切換部50が配設されてい
る。第4図は切換部50の取付部40側からの正
面図、第5図は切換部50の斜視図である。図に
おいて、51は矩形に枠組された枠体であり、該
枠体51における上下方向に延びる左、右の各枠
材の取付部50側部分には、上下方向に長孔51
aが夫々開設されている。各長孔51aには、
左、右の各端部を枠組51の左、右の各枠材に対
して上下方向への摺動自在に嵌合させた横長の移
動枠体52の左、右各外側面に回転自在に取付け
られている各ローラ52aが内嵌しており、各ロ
ーラ52aは各長孔51a内を転接移動するよう
になつていて、移動枠体52は上下方向に移動さ
れる。該移動枠体52の上面にはワイヤ53の一
端が取付けられており、またその下面には引張り
ばね54の一端が取付けられている。引張りばね
54の他端は枠体51の下面に取付けられた支持
筒55の下端内面に取付けられている。従つてワ
イヤ53の牽引(又は弛緩)操作により移動枠体
52は、引張りばね54の引張り力に抗して(又
は引張り力により)上方(又は下方)へ移動され
る。 A switching section 50 attached to the attachment section 40 is disposed between the attachment section 40 and the inner surface of the cell 12. FIG. 4 is a front view of the switching section 50 from the mounting section 40 side, and FIG. 5 is a perspective view of the switching section 50. In the figure, reference numeral 51 denotes a rectangular frame, and elongated holes 51 are provided in the mounting portion 50 side portions of the left and right frame members extending in the vertical direction of the frame 51.
A has been established respectively. In each long hole 51a,
The left and right ends are rotatably fitted to the left and right outer surfaces of a horizontally elongated movable frame 52 whose left and right ends are fitted to the left and right frame members of the frame 51 so as to be slidable in the vertical direction. Each of the attached rollers 52a is fitted inside, and each roller 52a is configured to roll and move within each elongated hole 51a, and the movable frame 52 is moved in the vertical direction. One end of a wire 53 is attached to the upper surface of the moving frame 52, and one end of a tension spring 54 is attached to the lower surface thereof. The other end of the tension spring 54 is attached to the inner surface of the lower end of a support tube 55 attached to the lower surface of the frame 51. Therefore, by pulling (or relaxing) the wire 53, the movable frame 52 is moved upward (or downward) against (or by) the tensile force of the tension spring 54.
移動枠体52の上、下側各端部には筒状の連結
管56の取付部40側部分が、左右方向への摺動
自在に嵌合されている。連結管56の各端面には
フランジ56aが夫々形成されており、その取付
部40側端面は取付部40に対向している。従つ
て移動枠体52の上下方向移動により連結管56
は枠体51に対する上下方向位置が変更される。
このとき、連結管56は左右方向への移動可能と
なつている。 The mounting portion 40 side portion of a cylindrical connecting pipe 56 is fitted into each of the upper and lower ends of the movable frame 52 so as to be slidable in the left-right direction. A flange 56a is formed on each end face of the connecting pipe 56, and the end face on the attachment portion 40 side faces the attachment portion 40. Therefore, by vertically moving the movable frame 52, the connecting pipe 56
The vertical position with respect to the frame body 51 is changed.
At this time, the connecting pipe 56 is movable in the left-right direction.
連結管56のセル12内面側部分の左、右各端
部には、その上、下側の各端部を枠体51の上、
下側の各枠材に左右方向への摺動自在に嵌合させ
た縦長の移動枠体61の縦長の左、右各側板が連
結管56に対して上下方向への摺動自在に嵌合さ
れている。該移動枠体61の上、下各側面にはロ
ーラ61aが夫々回転自在に取付けられている。
各ローラ61aは、枠体51の上、下側の各枠材
におけるセル12側部分に開設された左右方向に
延びる各長孔51bに内嵌されており、各ローラ
61aは各長孔51b内を転接移動するようにな
つていて、移動枠体61は左右方向に移動され
る。 At each of the left and right ends of the inner surface of the cell 12 of the connecting pipe 56, the upper and lower ends are connected to the top of the frame 51,
The vertically long left and right side plates of the vertically long movable frame 61 fitted into the lower frame members so as to be slidable in the horizontal direction are fitted into the connecting pipe 56 so as to be slidable in the vertical direction. has been done. Rollers 61a are rotatably attached to the upper and lower sides of the movable frame 61, respectively.
Each roller 61a is fitted into each elongated hole 51b extending in the left-right direction, which is opened in the cell 12 side portion of each upper and lower frame material of the frame 51, and each roller 61a is fitted into each elongated hole 51b. The movable frame 61 is moved in the left-right direction.
移動枠体61の一方の側面にはワイヤ63の一
端が取付けられており、また他方の側面には、引
張りばね64の一端が係止されている。引張りば
ね64の他端は枠体51に取付けられた支持筒6
5の内側端面に係止されている。従つてワイヤ6
3の牽引又は弛緩により移動枠体61は、枠体5
1に対する左右方向位置が変更され、移動枠体6
1の移動により連結管56は枠体51に対する左
右方向位置が変更される。また前述のようにワイ
ヤ53の操作により移動枠体52が上下方向に移
動されて連結管56は枠体51に対する上下方向
位置が変更され、各ワイヤ53の固定により枠体
51に対する連結管56の位置が固定され、取付
部40における所定の案内具21の端面に対向さ
せられる。 One end of a wire 63 is attached to one side of the moving frame 61, and one end of a tension spring 64 is locked to the other side. The other end of the tension spring 64 is attached to the support tube 6 attached to the frame 51.
It is locked to the inner end surface of 5. Therefore wire 6
The movable frame 61 is moved by the traction or relaxation of the frame 5.
The horizontal position relative to 1 is changed, and the moving frame 6
1, the position of the connecting pipe 56 in the left-right direction with respect to the frame body 51 is changed. Further, as described above, the movable frame 52 is moved in the vertical direction by the operation of the wire 53, and the vertical position of the connecting pipe 56 with respect to the frame 51 is changed. The position is fixed and is opposed to the end surface of a predetermined guide tool 21 in the mounting portion 40 .
連結管56におけるセル12内面側端部のフラ
ンジ56aには可撓管57の一端が取付けられて
おり、その他端は、セル12側壁を貫通している
貫通パイプ14のセル12内側端部に嵌着されて
いる。従つて、連結管56、可撓管57及び貫通
パイプ14はセル外側よりフアイバスコープを各
案内具21へ導入するものであり、これらにより
導入管部を構成している。また上述の各ワイヤ5
3,63は、貫通パイプ14を通つてセル12外
部にまで延出されていて、セル12外にて操作さ
れる。 One end of a flexible tube 57 is attached to a flange 56a at the inner end of the cell 12 in the connecting pipe 56, and the other end is fitted into the inner end of the cell 12 of the through pipe 14 penetrating the side wall of the cell 12. It is worn. Therefore, the connecting tube 56, the flexible tube 57, and the through pipe 14 are for introducing the fiberscope into each guide tool 21 from the outside of the cell, and these constitute an introduction tube section. In addition, each wire 5 mentioned above
3 and 63 extend to the outside of the cell 12 through the through pipe 14, and are operated outside the cell 12.
叙上の如き構成の本案装置を用いて貯蔵タンク
11等の表面を監視する場合には、予めワイヤ5
3,63をセル12外部より操作して連結管56
端面を、取付具40における所定の案内具21端
面と対向する位置に移動させる。この場合、連結
管56は、ワイヤ53を牽引又は弛緩することに
より上下方向へ、またワイヤ63を牽引又は弛緩
することにより左右方向へ移動される。
When monitoring the surface of the storage tank 11 etc. using the present device configured as described above, the wire 5 is connected in advance.
3 and 63 from outside the cell 12 to connect the connecting pipe 56.
The end face is moved to a position facing the end face of the predetermined guide tool 21 in the fixture 40. In this case, the connecting pipe 56 is moved vertically by pulling or relaxing the wire 53, and horizontally by pulling or relaxing the wire 63.
このような状態でセル12外部の貫通パイプ1
4端面よりフアイバスコープ13先端を挿入する
と、フアイバスコープ13先端は貫通パイプ14
に案内されてセル12内の可撓管57内に導入さ
れ、さらに分配装置30の切換部50における連
結管56内へ導入される。そしてフアイバスコー
プ13先端は連結管56の端面に対向する所定の
案内具21内に導入され、以下この案内具21に
沿つてフアイバスコープ13先端は移動される。 In this state, the through pipe 1 outside the cell 12
When the tip of the fiberscope 13 is inserted from the 4th end surface, the tip of the fiberscope 13 is inserted into the through pipe 14.
The liquid is guided into the flexible tube 57 in the cell 12, and further into the connecting tube 56 in the switching section 50 of the distribution device 30. Then, the tip of the fiberscope 13 is introduced into a predetermined guide tool 21 facing the end surface of the connecting tube 56, and thereafter the tip of the fiberscope 13 is moved along this guide tool 21.
案内具21は前述の如くタンク11の溶接ビー
ド等の監視部位に沿つて配設されているため、フ
アイバスコープ13先端は監視部位に沿つて移動
され、案内具21における螺条間の間〓より監視
部位の像を捉えて、その像はイメージガイドによ
りセル12外部の所定の受像機に写し出される。 As described above, the guide tool 21 is disposed along the monitoring area such as the weld bead of the tank 11, so the tip of the fiberscope 13 is moved along the monitoring area, and from between the threads of the guide tool 21. An image of the monitored region is captured and projected onto a predetermined receiver outside the cell 12 by an image guide.
なお、上述の実施例では案内具に導入する検査
用器具として、フアイバスコープを用いる構成と
したが、比較的小型の工業用テレビカメラを用い
ることも可能である。 In the above-described embodiment, a fiberscope is used as the inspection instrument introduced into the guide, but it is also possible to use a relatively small industrial television camera.
本考案によれば、室内に設置された監視対象の
各部位に沿わせた複数の案内具において、フアイ
バスコープ等の検査用器具を挿入すべき案内具を
変更する場合にも、検査用器具を一旦室外に引き
出すことなく、室外からのワイヤの操作により変
更でき、操作性は著しく向上する。また室内と室
外とを連通する導入管部は一箇所でよいため、上
述の実施例のように放射性物質の貯蔵タンクを監
視する場合も放射線がセル外に漏出する虞がな
く、安全に作業が行える。
According to the present invention, even when changing the guide in which to insert an inspection instrument such as a fiberscope among multiple guide instruments installed indoors along each part to be monitored, the inspection instrument can be inserted. Changes can be made by operating the wire from outside without having to take it outside, significantly improving operability. In addition, since there is only one introduction pipe that communicates between the indoor and outdoor areas, there is no risk of radiation leaking outside the cell even when monitoring a storage tank for radioactive materials as in the above example, and the work can be done safely. I can do it.
図面は本考案の実施例を示すものであり、第1
図は本考案に係る案内装置を用いた放射性物質貯
蔵タンクの斜視図、第2図は案内具の使用状態を
示す斜視図、第3図は切換装置の断面図、第4図
はその切換部の正面図、第5図はその斜視図であ
る。
11……貯蔵タンク、12……セル、13……
フアイバスコープ、14……貫通パイプ、21…
…案内具、30……切換装置、40……取付部、
41……枠体、50……切換部、51……枠体、
52,61……移動枠体、53,63……ワイ
ヤ、54,64……引張りばね、56……連結
管、57……可撓管。
The drawings show an embodiment of the present invention.
The figure is a perspective view of a radioactive material storage tank using the guide device according to the present invention, Figure 2 is a perspective view showing how the guide is used, Figure 3 is a sectional view of the switching device, and Figure 4 is the switching section thereof. FIG. 5 is a front view and a perspective view thereof. 11...Storage tank, 12...Cell, 13...
Fiberscope, 14... Penetration pipe, 21...
... Guide tool, 30 ... Switching device, 40 ... Mounting part,
41...frame body, 50...switching section, 51...frame body,
52, 61...Moving frame body, 53, 63...Wire, 54, 64...Tension spring, 56...Connecting pipe, 57...Flexible tube.
Claims (1)
器具をその内部に導入して移動させるべく、複数
の監視対象に沿つて配設され、その各一端を整列
させた複数の案内具と、いずれかの案内具内に前
記検査用器具を導入すべくその一端を前記案内具
の前記各一端と選択的に対面するように配設され
た導入管部と、該導入管部の一端を所定の案内具
の一端に配置すべく案内移動する手段とを具備す
ることを特徴とする検査用器具案内装置。 A plurality of guide tools arranged along a plurality of monitoring targets and with one end of each of the guide tools aligned in order to introduce and move inspection instruments such as fiberscopes or television cameras inside the guide tools, and any one of the guide tools. an introduction pipe section disposed such that one end of the introduction pipe selectively faces each of the ends of the guide tool in order to introduce the testing instrument into the interior of the guide tool; 1. An inspection instrument guiding device comprising means for guiding and moving the instrument so as to place the instrument in the inspection instrument.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985051605U JPH0435853Y2 (en) | 1985-04-05 | 1985-04-05 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985051605U JPH0435853Y2 (en) | 1985-04-05 | 1985-04-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61167615U JPS61167615U (en) | 1986-10-17 |
JPH0435853Y2 true JPH0435853Y2 (en) | 1992-08-25 |
Family
ID=30570807
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1985051605U Expired JPH0435853Y2 (en) | 1985-04-05 | 1985-04-05 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0435853Y2 (en) |
-
1985
- 1985-04-05 JP JP1985051605U patent/JPH0435853Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS61167615U (en) | 1986-10-17 |
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