JPH0324453Y2 - - Google Patents
Info
- Publication number
- JPH0324453Y2 JPH0324453Y2 JP7193685U JP7193685U JPH0324453Y2 JP H0324453 Y2 JPH0324453 Y2 JP H0324453Y2 JP 7193685 U JP7193685 U JP 7193685U JP 7193685 U JP7193685 U JP 7193685U JP H0324453 Y2 JPH0324453 Y2 JP H0324453Y2
- Authority
- JP
- Japan
- Prior art keywords
- planting
- steering
- cylinder
- control valve
- conjunction
- 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
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 235000007164 Oryza sativa Nutrition 0.000 claims description 5
- 235000009566 rice Nutrition 0.000 claims description 5
- 230000004044 response Effects 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 13
- 210000000078 claw Anatomy 0.000 description 6
- 239000010720 hydraulic oil Substances 0.000 description 6
- 241000209094 Oryza Species 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
Landscapes
- Guiding Agricultural Machines (AREA)
- Transplanting Machines (AREA)
Description
【考案の詳細な説明】
「産業上の利用分野」
本考案は油圧操作力でもつて前車輪のかじ取り
を行い機体を操向制御するようにした田植機のパ
ワステアリング装置に関する。[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a power steering device for a rice transplanter that uses hydraulic operating force to steer the front wheels and control the steering of the machine body.
「従来の技術」
従来、操向ハンドルと連動して操舵制御弁を介
して操向用パワシリンダを作動させる田植機が開
発された。"Prior Art" Conventionally, a rice transplanter has been developed in which a steering power cylinder is operated via a steering control valve in conjunction with a steering handle.
「考案が解決しようとする問題点」
前記従来技術は、極めて小さな操作力で操向ハ
ンドルが回転するから、植付直進走行時、前記ハ
ンドルを作業者が握ることによりそのハンドルの
微小回転に基づいて蛇行走行し易く、隣接の既植
苗列との植付条間を一定に保ち難い等の問題があ
つた。``Problem to be solved by the invention'' In the conventional technology, since the steering handle rotates with an extremely small operating force, when the operator grips the handle while driving straight ahead with planting, the steering handle is rotated based on the minute rotation of the handle. There were problems such as it was easy to run in a meandering manner, and it was difficult to maintain a constant distance between planting rows and adjacent rows of already planted seedlings.
「問題点を解決するための手段」
然るに、本考案は、操向ハンドルと連動して操
舵制御弁を介して操向用パワシリンダを作動制御
する装置において、植付直進走行時にこの入切操
作と連動して前記シリンダの操向動作を制御する
規制部材を設け、植付直進走行状態で少なくとも
前記シリンダの操向動作の応答を緩慢にすべく構
成したものである。``Means for Solving the Problems'' However, the present invention is a device that controls the operation of a power cylinder for steering via a steering control valve in conjunction with a steering handle, and the present invention provides a device that controls the operation of a power cylinder for steering through a steering control valve. A regulating member is provided to control the steering operation of the cylinder in conjunction with the control member, and is configured to slow down at least the response of the steering operation of the cylinder in a straight-ahead traveling state with planting.
「作用」
従つて、従来に比べて操向ハンドルを作業者が
握つた状態で植付直進走行させてもそのハンドル
の微小回転による蛇行走行を防止し得、植付作業
途中での操向ハンドルの操作力を大きくして直進
性の向上を容易に図り得、隣接の既植苗列に沿つ
て安定良く走行移動し得るものである。``Function'' Therefore, compared to the conventional method, even if the operator holds the steering handle while driving straight ahead while planting, it is possible to prevent meandering travel due to minute rotations of the handle, and the steering handle during planting work can be prevented. By increasing the operating force of the seedlings, it is possible to easily improve the straightness, and the seedlings can be stably moved along the adjacent rows of already planted seedlings.
「実施例」
以下本考案の実施例を図面に基づいて詳述す
る。第１図は要部の油圧回路図、第２図は乗用田
植機の側面図、第３図は同平面図を示し、図中１
は作業者が搭乗する走行車であり、エンジン２を
搭載する車体フレーム３後端をミツシヨンケース
４に連設させ、前記ミツシヨンケース４の前部両
側にアクスルケース５を介して水田走行用前車輪
６を支持させると共に、前記ミツシヨンケース４
の後部両側にリヤチエンケースである伝動ケース
７を連設し、前記伝動ケース７後端部に水田走行
用後車輪８を支持させる。そして前記エンジン２
等を覆うボンネツト９両側に予備苗載台１０を取
付けると共に、ステツプ１１を形成する車体カバ
ー１２によつて前記伝動ケース７等を覆い、前記
車体カバー１２上部に運転席１３を取付け、其の
運転席１３の前方で前記ボンネツト９後部に操向
ハンドル１４を設ける。"Embodiments" Examples of the present invention will be described below in detail based on the drawings. Figure 1 is a hydraulic circuit diagram of the main parts, Figure 2 is a side view of the riding rice transplanter, and Figure 3 is a plan view of the same.
is a traveling vehicle on which a worker rides, and the rear end of a vehicle body frame 3 on which an engine 2 is mounted is connected to a transmission case 4, and a vehicle for driving in rice fields is connected to both front sides of the transmission case 4 through an axle case 5. In addition to supporting the front wheels 6, the transmission case 4
A transmission case 7, which is a rear chain case, is connected to both sides of the rear of the vehicle, and rear wheels 8 for running in paddy fields are supported at the rear end of the transmission case 7. and the engine 2
A spare seedling stand 10 is attached to both sides of the bonnet 9, which covers the transmission case 7, etc., is covered by the vehicle body cover 12 forming the step 11, and a driver's seat 13 is attached to the upper part of the vehicle body cover 12. A steering handle 14 is provided at the rear of the bonnet 9 in front of the seat 13.
また、図中１５は多条植え用の苗載台１６並び
に複数の植付爪１７などを具備する植付部であ
り、前高後低の合成樹脂製の前傾式苗載台１６を
下部レール１８及びガイドレール１９を介して植
付ケース２０に左右往復摺動自在に支持させると
共に、クランク運動させる植付アーム２１並びに
植付爪駆動軸２２を介して植付ケース２０に前記
植付爪１７を取付ける。そして前記植付ケース２
０の下方に、植付均平用の内外側走行フロート２
３，２４を配設すると共に、前記各植付ケース２
０…を植付ミツシヨンケース２５に連設し、トツ
プリンク２６及びロアリンク２７を含む三点リン
ク機構２８を用いて前記走行車１後側にこの植付
ミツシヨンケース２５を介して植付部１５を連結
させ、植付部１５を昇降させる油圧シリンダ２９
を前記ミツシヨンケース４後部とトツプリンク２
８との間に介設させ、前記油圧シリンダ２９の伸
縮動作で植付部１５を昇降させる一方、前記植付
部１５を降下させて各フロート２３，２４を着地
させ、左右に往復移動させる苗載台１６から一株
分の苗を植付爪１７によつて順次取出して植付け
るように構成している。 In addition, reference numeral 15 in the figure is a planting section that is equipped with a seedling stand 16 for multi-row planting, a plurality of planting claws 17, etc. The planting claws are supported by the planting case 20 via the rails 18 and guide rails 19 so as to be slidable back and forth in the left and right directions, and are attached to the planting case 20 via the planting arm 21 and the planting claw drive shaft 22 which are moved by a crank. Install 17. And the planting case 2
0 below, inner and outer running float 2 for planting leveling.
3 and 24, and each of the planting cases 2
0... is connected to the planting mechanism case 25, and using a three-point linkage mechanism 28 including a top link 26 and a lower link 27, planting is carried out on the rear side of the traveling vehicle 1 via the planting mechanism case 25. Hydraulic cylinder 29 that connects the parts 15 and raises and lowers the planting part 15
The transmission case 4 rear and top link 2
8, the planting section 15 is raised and lowered by the expansion and contraction operation of the hydraulic cylinder 29, and the planting section 15 is lowered to land each float 23, 24, and the seedlings are moved back and forth from side to side. The structure is such that one seedling is taken out one by one from the mounting table 16 using a planting claw 17 and planted.
また図中３０は走行変速レバー、３１は植付昇
降レバー、３２はアクセルレバー、３３は主クラ
ツチペダル、３４，３４は左右ブレーキペダルで
ある。 Further, in the figure, 30 is a travel gear shift lever, 31 is a planting lift lever, 32 is an accelerator lever, 33 is a main clutch pedal, and 34, 34 are left and right brake pedals.
第４図乃至第５図に示す如く、前記操向ハンド
ル１４はパワーステアリング装置３５に連動連結
させるもので、前記ハンドル１４の回転変位をピ
ツトマンアーム３６に伝えるステアリングボツク
ス３７と、アクスル伝動ケース３８に回動支点軸
３９を介し揺動自在に支持するステアリングアー
ムである揺動板４０と、該揺動板４０に固定する
アーム４１一端と前記ピツトマンアーム３６間に
介装するトラツグロツドである操舵制御弁４２
と、前記アーム４１他端と車体フレーム３間に介
装してピストンロツド４４をアーム４１に連結す
る操向用パワシリンダ４３と、フロントアクスル
ケース５に一体連結する左右のナツクルアーム４
５，４５と前記揺動板４０とをそれぞれ連結する
タイロツドである連結ロツド４６，４７と、前記
揺動板４０と伝動ケース３８間に介装するスイン
グハンチング防止用ダンパ４８とを備え、ステア
リング装置３５を構成するもので、前記ハンドル
１４を回転変位したとき制御弁４２のスプール４
２ａが進退作動し、パワシリンダ４３を適宜伸縮
させ前車輪６の方向を変換させると共に、その変
換時シリンダ４３の変位を前記アーム４１を介し
制御弁４２にフイードバツクさせ、該制御弁４２
を中立復帰させるように構成している。また、前
記制御弁４２は車体フレーム３に固設する油圧ポ
ンプ４９にホース５０を介し接続すると共に、前
記シリンダ４３に平行な二本の送油及び戻油用ホ
ース５１，５２を介し制御弁４２を接続させてい
る。 As shown in FIGS. 4 and 5, the steering handle 14 is interlocked with a power steering device 35, and is connected to a steering box 37 that transmits the rotational displacement of the steering wheel 14 to a pitman arm 36, and an axle transmission case 38. A swing plate 40, which is a steering arm supported swingably via a dynamic fulcrum shaft 39, and a steering control valve 42, which is a trouble rod interposed between one end of an arm 41 fixed to the swing plate 40 and the Pitman arm 36.
, a steering power cylinder 43 that is interposed between the other end of the arm 41 and the vehicle body frame 3 and connects the piston rod 44 to the arm 41, and left and right knuckle arms 4 that are integrally connected to the front axle case 5.
5, 45 and the swing plate 40, and a swing hunting prevention damper 48 interposed between the swing plate 40 and the transmission case 38, the steering device 35, and when the handle 14 is rotationally displaced, the spool 4 of the control valve 42
2a moves forward and backward, and expands and contracts the power cylinder 43 as appropriate to change the direction of the front wheel 6. At the time of conversion, the displacement of the cylinder 43 is fed back to the control valve 42 via the arm 41, and the control valve 42
It is configured to return to neutrality. Further, the control valve 42 is connected to a hydraulic pump 49 fixed to the vehicle body frame 3 via a hose 50, and is connected to the control valve 42 via two oil supply and oil return hoses 51 and 52 parallel to the cylinder 43. are connected.
さらに、前記伝動ケース３８の左右略中間前部
にはボルト５３を介し平面門形のアクスルサポー
ト５４を着脱自在に固定させ、車体フレーム３側
に連結固定する軸受金具５５にスイング軸５６を
介し左右上下揺動自在に前記サポート５４前端を
支持させている。また前記伝動ケース３８の左右
中間後部にボルト５７を介し軸フランジ５８を固
定させ、前記ミツシヨンケース４前端に前記フラ
ンジ５８の軸部５８ａを回動自在に嵌合させ、本
機側に伝動ケース３８を介し左右の前車輪６，６
をスイング自在に支承するように構成している。 Furthermore, a planar gate-shaped axle support 54 is removably fixed to the left and right intermediate front portions of the transmission case 38 via bolts 53, and is attached to the left and right sides via swing shafts 56 to bearing fittings 55 connected and fixed to the vehicle body frame 3 side. The front end of the support 54 is supported so as to be vertically swingable. Further, a shaft flange 58 is fixed to the left and right intermediate rear portions of the transmission case 38 via bolts 57, and the shaft portion 58a of the flange 58 is rotatably fitted to the front end of the transmission case 4, and the transmission case is attached to the main machine side. 38 to the left and right front wheels 6,6
It is configured to support the swing freely.
また第１図に示す如く、プーリ５９，６０，６
１及びベルト６２を介してミツシヨンケース４の
入力軸４ａ並びに油圧ポンプ４９の入力軸４９ａ
にエンジン２の出力軸２ａを連動連結させると共
に、前記植付昇降レバー３１の植付クラツチ入切
動作と連動して開閉作動する規制部材である油圧
絞り弁６３を備え、前記操舵制御弁４２と油圧ポ
ンプ４９を連通するホース５０により形成した油
路途中に前記絞り弁６３を設け、前記シリンダ４
３に供給する油圧ポンプ４９の高圧作動油量を植
付作業のときに減少させるもので、植付昇降レバ
ー３１の入操作によりこれと連動して前記絞り弁
６３を閉動させ、植付直進走行時、制御弁４２を
介してシリンダ４３に供給する高圧作動油量を減
少させてシリンダ４３による操向動作の応答性を
低下させるように構成している。 In addition, as shown in FIG. 1, pulleys 59, 60, 6
1 and belt 62 to the input shaft 4a of the mission case 4 and the input shaft 49a of the hydraulic pump 49.
The output shaft 2a of the engine 2 is interlocked with the output shaft 2a of the engine 2, and a hydraulic throttle valve 63 is provided as a regulating member that opens and closes in conjunction with the opening/closing operation of the planting clutch of the planting lift lever 31, and the steering control valve 42 and The throttle valve 63 is provided in the middle of the oil path formed by the hose 50 that communicates with the hydraulic pump 49, and the
3 is used to reduce the amount of high-pressure hydraulic oil supplied to the hydraulic pump 49 during planting work, and when the planting lifting lever 31 is turned on, the throttle valve 63 is closed in conjunction with this, and the planting operation goes straight ahead. When the vehicle is running, the amount of high-pressure hydraulic oil supplied to the cylinder 43 via the control valve 42 is reduced to reduce the responsiveness of the steering operation by the cylinder 43.
本実施例は上記の如く構成するものにして、ハ
ンドル１４を左右に回転操作するとき、前記制御
弁４２のスプール４２ａがそれに応じ一定量進退
し、制御弁４２を中立位置より切換えてパワーシ
リンダ４３にポンプ４９からの高圧作動油を送油
する。そしてシリンダ４３が伸縮する結果アーム
４１を介して揺動板４０が支点軸３９を中心に左
或いは右に揺動して前車輪６を方向転換させるも
ので、前記植付昇降レバー３１の植付クラツチ入
操作により、苗載台１６及び植付爪１７を駆動し
て植付作業を開始したとき、前記レバー３１の入
操作と連動して絞り弁６３を閉じ、パワシリンダ
４３に供給する高圧作動油量を減少させて操向ハ
ンドル１４を操作するのに必要な力を大きくし、
そのハンドル１４の微妙な揺振による蛇行走行を
防いで操向ハンドル１４を作業者が握つた状態で
も植付直進走行を安定良く得られるものである。 The present embodiment is configured as described above, and when the handle 14 is rotated left and right, the spool 42a of the control valve 42 moves forward and backward by a certain amount accordingly, and the control valve 42 is switched from the neutral position to the power cylinder 43. High-pressure hydraulic oil is supplied from the pump 49 to. As a result of the cylinder 43 expanding and contracting, the swinging plate 40 swings to the left or right around the fulcrum shaft 39 via the arm 41, thereby changing the direction of the front wheels 6. When the clutch is turned on to drive the seedling stand 16 and the planting claw 17 to start planting, the throttle valve 63 is closed in conjunction with the lever 31 turned on, and high-pressure hydraulic oil is supplied to the power cylinder 43. increasing the force required to operate the steering handle 14 by decreasing the amount of force required to operate the steering handle 14;
This prevents meandering travel due to subtle vibrations of the handle 14, and allows stable straight forward travel with planting even when the operator grasps the steering handle 14.
さらに第６図は他の実施例を示すものであり、
植付昇降レバー３１の植付クラツチ入切操作と連
動してパワシリンダ４３の操向動作を制御する規
制部材であるロツクピン６４を備え、そのロツク
ピン６４を前記レバー３１に連結させると共に、
前記ロツクピン６４を係脱自在に係入させる係合
孔６５を操舵制御弁４２のスプール４２ａに形成
したもので、植付昇降レバー３１の植付クラツチ
入操作と連動してロツクピン６４を係合孔６５に
係入させ、そのロツクピン６４によりスプール４
２ａを中立位置に固定し、パワシリンダ４３の操
向動作を中断させた状態で植付直進走行させるも
のである。 Furthermore, FIG. 6 shows another embodiment,
A lock pin 64 is provided as a regulating member that controls the steering operation of the power cylinder 43 in conjunction with the on/off operation of the planting clutch of the planting lift lever 31, and the lock pin 64 is connected to the lever 31,
An engagement hole 65 into which the lock pin 64 is detachably engaged is formed in the spool 42a of the steering control valve 42, and the lock pin 64 is inserted into the engagement hole in conjunction with the planting clutch engagement operation of the planting lift lever 31. 65, and the lock pin 64 locks the spool 4.
2a is fixed at a neutral position, and the vehicle is driven straight ahead with planting while the steering operation of the power cylinder 43 is interrupted.
さらに第７図は他の実施例を示すものであり、
植付昇降レバー３１の植付クラツチ入切操作と連
動してパワシリンダ４３の操向動作を制御する規
制部材であるアンロード切換弁６６を備え、操舵
制御弁４２と油圧ポンプ４９を連通するホース５
０により形成した油路途中に前記切換弁６６を設
けると共に、その切換弁６６のスプール６６ａを
植付昇降レバー３１に連結させ、前記レバー３１
の植付クラツチ入切操作と連動して前記切換弁６
６を作動させるもので、前記植付昇降レバー３１
の植付クラツチ入操作により、植付爪１７などを
駆動して植付作業を開始したとき、前記レバー３
１の入操作と連動して前記切換弁６６を作動さ
せ、その切換弁６６を介して油圧ポンプ４９の高
圧作動油を作動油タンク６７に短絡流出させ、パ
ワシリンダ４３の操向動作を中断させた状態で植
付直進走行させるものである。 Furthermore, FIG. 7 shows another embodiment,
The hose 5 includes an unload switching valve 66 that is a regulating member that controls the steering operation of the power cylinder 43 in conjunction with the on/off operation of the planting clutch of the planting elevator lever 31, and connects the steering control valve 42 and the hydraulic pump 49.
The switching valve 66 is provided in the middle of the oil path formed by
The switching valve 6 is operated in conjunction with the on/off operation of the planting clutch.
6, which operates the planting lift lever 31.
When the planting clutch is engaged to drive the planting claw 17 and start planting work, the lever 3
The switching valve 66 is operated in conjunction with the turning-on operation of step 1, and the high-pressure hydraulic oil of the hydraulic pump 49 is short-circuited and discharged to the hydraulic oil tank 67 through the switching valve 66, thereby interrupting the steering operation of the power cylinder 43. It is designed to drive straight ahead with planting.
「考案の効果」
以上実施例から明らかなように本考案は、操向
ハンドル１４と連動して操舵制御弁４２を介して
操向用パワシリンダ４３を作動制御する装置にお
いて、植付直進走行時にこの入切操作と連動して
前記シリンダ４３の操向動作を制御する油圧絞り
弁６３またはロツクピン６４またはアンロード切
換弁６６などの規制部材を設け、植付直進走行状
態で少なくとも前記シリンダ４３の操向動作の応
答を緩慢にすべく構成したもので、従来に比べて
操向ハンドル１４を作業者が握つた状態で植付直
進走行させてもそのハンドル１４の微小回転によ
り蛇行走行を防止でき、植付作業途中での操向ハ
ンドル４の操作力を大きくして直進性の向上を容
易に図ることができ、隣接の既植苗列に沿つて安
定良く走行移動できる等の実用的な効果を奏する
ものである。"Effects of the Invention" As is clear from the above embodiments, the present invention provides a device for controlling the operation of the steering power cylinder 43 through the steering control valve 42 in conjunction with the steering handle 14, when traveling straight ahead with planting. A regulating member such as a hydraulic throttle valve 63, a lock pin 64, or an unload switching valve 66 is provided to control the steering operation of the cylinder 43 in conjunction with the on/off operation, so that at least the steering of the cylinder 43 can be controlled while the plant is traveling straight ahead with planting. It is configured to have a slower response to the operation, and even if the worker holds the steering handle 14 and runs straight ahead while planting, the slight rotation of the handle 14 prevents meandering, and the planter can move in a straight line. It is possible to easily improve the straightness by increasing the operating force of the steering handle 4 during the planting work, and it has practical effects such as being able to move stably along the adjacent row of already planted seedlings. It is.
第１図は本考案の一実施例を示す要部の油圧回
路図、第２図は全体の側面図、第３図は同平面
図、第４図は要部の側面図、第５図は同平面図、
第６図及び第７図は他の実施例を示す油圧回路図
である。
１４……操向ハンドル、４２……操舵制御弁、
４３……パワシリンダ、６３……絞り弁、６４…
…ロツクピン（規制部材）、６６……アンロード
切換弁（規制部材）。
Fig. 1 is a hydraulic circuit diagram of the main parts showing one embodiment of the present invention, Fig. 2 is a side view of the whole, Fig. 3 is a plan view of the same, Fig. 4 is a side view of the main parts, and Fig. 5 is a hydraulic circuit diagram of the main parts. The same plan view,
6 and 7 are hydraulic circuit diagrams showing other embodiments. 14... Steering handle, 42... Steering control valve,
43...power cylinder, 63...throttle valve, 64...
... Lock pin (regulating member), 66... Unload switching valve (regulating member).
Claims (1)
向用パワシリンダを作動制御する装置において、
植付直進走行時にこの入切操作と連動して前記シ
リンダの操向動作を制御する規制部材を設け、植
付直進走行状態で少なくとも前記シリンダの操向
動作の応答を緩慢にすべく構成したことを特徴と
する田植機のパワステアリング装置。 In a device that controls the operation of a steering power cylinder via a steering control valve in conjunction with a steering handle,
A regulating member is provided to control the steering operation of the cylinder in conjunction with the on/off operation when the vehicle is traveling straight with planting, and is configured to slow down at least the response of the steering operation of the cylinder when the vehicle is traveling straight with planting. A power steering device for rice transplanters featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7193685U JPH0324453Y2 (en) | 1985-05-14 | 1985-05-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7193685U JPH0324453Y2 (en) | 1985-05-14 | 1985-05-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61186680U JPS61186680U (en) | 1986-11-20 |
| JPH0324453Y2 true JPH0324453Y2 (en) | 1991-05-28 |
Family
ID=30609878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7193685U Expired JPH0324453Y2 (en) | 1985-05-14 | 1985-05-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0324453Y2 (en) |
-
1985
- 1985-05-14 JP JP7193685U patent/JPH0324453Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61186680U (en) | 1986-11-20 |
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