JP3386423B2 - Traveling device for walking type management machine - Google Patents
Traveling device for walking type management machineInfo
- Publication number
- JP3386423B2 JP3386423B2 JP34825099A JP34825099A JP3386423B2 JP 3386423 B2 JP3386423 B2 JP 3386423B2 JP 34825099 A JP34825099 A JP 34825099A JP 34825099 A JP34825099 A JP 34825099A JP 3386423 B2 JP3386423 B2 JP 3386423B2
- Authority
- JP
- Japan
- Prior art keywords
- transmission case
- traveling device
- traveling
- traveling transmission
- crawler belt
- 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 - Lifetime
Links
Landscapes
- Soil Working Implements (AREA)
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は農作業に用いる歩行
型管理機の走行装置に関し、より詳しくは、畝上への土
上げ作業等において幅狭の畝間を好適に走行することが
できる歩行型管理機の走行装置に関する。
【０００２】
【従来の技術】従来、畝間作業用の歩行型管理機の走行
装置は、一輪のホイール型走行装置にて構成されること
が一般的である。
【０００３】
【発明が解決しようとする課題】しかし、上記従来技術
の如く走行装置を一輪のホイールで構成するものは、ホ
イールと地面との接触面積が小さく牽引力を欠くもので
あった。そこで、該走行装置をクローラ走行装置に構成
することによりその接地面積を拡大し、牽引力の向上を
計るということが考えられる。一般に、クローラ走行装
置においてはクローラベルト側方に該クローラ走行装置
を駆動する走行伝動ケースや転輪を軸支する支持フレー
ム等が配置される為、クローラ走行装置全体の左右幅が
クローラベルトの左右幅よりも広くなるものである。そ
の為、幅狭の畝間を走行するクローラ走行装置におい
て、該走行伝動ケースや支持フレーム等が畝と接触し、
成形される畝を崩したり、機体の直進性が阻害される場
合がある。そこで、本発明においてはクローラベルトの
左右幅を十分に確保し、確実に牽引力を向上させること
ができるものでありながらクローラ走行装置の支持構成
を極力幅狭に構成して、上記問題点を解決しようとする
ものである。
【０００４】
【課題を解決するための手段】機体中央に設けたギヤケ
ース１前方に原動機１１を該ギヤケース１後方下方には
ロータリ伝動ケース１３を介してロータリ１２を連結配
置し、又、機体上部からは機体の操縦操作を行うハンド
ル杆１８を後方上方に向けて延設する歩行型管理機にお
いて、該ギヤケース１下方に走行伝動ケース２を延設
し、該走行伝動ケース２の下端部一側に駆動スプロケッ
ト３を片持状に軸支し、同じく該走行伝動ケース２の下
端部同側から支持フレーム８を下方に延設して複数の接
地側転輪５,５を駆動スプロケット３より下方位置に軸
支し、これら複数の転輪５,５と駆動スプロケット３に
クローラベルト６を巻回して機体中心位置下方に該走行
伝動ケース２下端部に連結取着される単一の背高のクロ
ーラ走行装置７を構成すると共に、該支持フレーム８を
正面視クローラベルト６の左右幅内に位置させてなる歩
行型管理機の走行装置の構成とした。
【０００５】
【０００６】
【０００７】
【発明の作用及び効果】一般に畝は断面形状が台形状又
は放物線状の曲線形状をしている為、該畝同志の並列に
よって形成される畝間においては、左右外方上方へ傾斜
の畝側面Ａ，Ａと該畝側面Ａ，Ａを連結する畝間底面Ｂ
により形成される。即ち、該畝間は左右外方へ傾斜の畝
側面Ａ，Ａによって、上方へ行く程その左右幅が広くな
る形状をしている。請求項１に記載の歩行型管理機にお
いては、複数の転輪４，５を軸支する支持フレーム８を
正面視クローラベルト６の左右幅内に位置させたもので
あるから、支持フレーム８がクローラベルト６の左右幅
内から突出することなく、幅狭の畝間を走行するにあた
って該支持フレーム８が畝側面Ａ，Ａに接触することが
ない。
【０００８】
【０００９】更に、この歩行型管理機においては、駆動
スプロケット３を走行伝動ケース２の下端部に軸支し、
同じく該走行伝動ケース２下端部に取着連結され下方に
延設される支持フレーム８に接地側転輪５,５を軸支さ
せ該駆動スプロケット３をクローラ走行装置７の上部に
配置し該クローラ走行装置７を背高に構成したものであ
るから、これを駆動する走行伝動ケース２は左右幅広の
畝間上部に配設され、畝間を走行するにあたって該走行
伝動ケース２が畝側面Ａ，Ａに接触することがない。従
って本発明の歩行型管理機においては、機体中心位置下
方に設ける単一のクローラ走行装置７により左右の畝側
面Ａ，Ａと接触させることなく幅狭の畝間を走行できる
と共に、畝間底面Ｂの左右全幅に渡ってクローラベルト
６を形成し、十分な接地面積を確保することができるの
である。
【００１０】
【実施例】次に本発明の実施例を図面を参照しながら説
明する。機体中央に設けたギヤケース１は前方の原動機
１１からの動力を下方に設ける走行装置７及びロータリ
１２に伝動し、走行及び農作業を行う。走行装置７はギ
ヤケース１から下方前方へ延設の走行伝動ケース２下端
部に取付けており、又、ロータリ１２をギヤケース１か
ら下方後方へ延設のロータリ伝動ケース１３下端部に取
付けて、該走行装置７とロータリ１２が機体左右中央で
前後に配列されるべく構成している。ロータリ１２上方
で、ギヤケース１から後方に延設の取付枠１４には機体
上方への土の飛散を防止するロータリカバー１５を取付
けており、該ロータリカバー１５前端に、前方への土の
飛散を防止するフロントカバー１６を取付けている。
【００１１】１７はロータリ１２の土掻き深さを調節す
る抵抗杆であり、上記取付枠１４から下方へ向けて延設
している。ギヤケース１の上部には後方上方へ向けてハ
ンドル杆１８を立設しており、機体後方を歩く作業者が
該ハンドル杆１８の後端部を持った状態で操縦操作を行
えるようにしている。１９，１９は該ハンドル杆１８後
端に取着のグリップ、２０はロータリ１２への動力を断
続する指クラッチレバー、２１はスタンド２２の回動操
作を行うスタンドレバー、２３は走行速度を切換える変
速レバー、２４はギヤケース１への動力を断続する主ク
ラッチレバーであり、該それぞれのレバー２０，２１，
２３，２４をハンドル杆１８後端のグリップ１９，１９
近辺に設けて、作業時の操縦操作に便利なようにしてい
る。ハンドル杆１８は、ギヤケース１を中心として平面
視放射状に延設した二本のパイプ杆で構成しており、そ
の前後中間部で連結板２５により該左右のパイプ杆を連
結補強している。
【００１２】２６は該連結板２５中央に配置の安全スイ
ッチであり、該スイッチ２６を押すことで原動機１１の
駆動を停止させる。ギヤケース１前方には、原動機１１
取付用の取付台２７を形成しており、該取付台２７上に
搭載の原動機１１と前記ギヤケース１をベルトによって
連結することで動力伝動可能にしている。２８は該ベル
トによる動力伝動部を覆う伝動カバー、２９は該原動機
１１の上面を覆う原動機カバーである。ギヤケース１の
左右片側にはロータリ１２の回転速度及び回転方向を操
作するロータリレバー３０を設けており、もう片側には
走行速度及び前後進方向を操作する走行操作レバー３１
を設けている。機体前端には平面視門型状のバンパフレ
ーム３２を取着しており、機体正面から衝突する障害物
から機体を保護する。
【００１３】走行装置７は走行伝動ケース２下端部一側
に片持状に軸支する駆動スプロケット３と、同じく走行
伝動ケース２の下端部同側から延設した支持フレーム８
にて軸支される複数の転輪４，５にクローラベルト６を
巻き掛けて一つのクローラ走行装置７に構成しており、
該複数の転輪４，５の内接地側の転輪５，５を外転輪に
て構成し、さらに該外転輪５，５をクローラベルト６に
形成の左右外れ止め突起９，１０の内一側の突起１０の
みを両側から挟込むべくクローラベルト６片側に偏倚し
て配設することで該クローラベルト６他側に空間を形成
して、該空間に支持フレーム８を配置可能に構成してい
る。走行伝動ケース２にて片持状に軸支される駆動スプ
ロケット３は図１に示す如くクローラ走行装置７上部に
配置しており、即ち、該走行伝動ケース２をクローラ走
行装置７の上部側方位置に配置している。３３は土除ス
クレパであり上記外転輪５，５に沿って並設の土除板３
４と、該土除板３４から外転輪５，５凹部へ突出の土除
突起３５により構成すると共に、支持フレーム８に形成
の取付部３６，３６にボルト３７，３７で取着固定して
いる。
【００１４】以上の構成の歩行型管理機を用いて畝上へ
の土上げ作業を行うと、機体下方に形成した一つのクロ
ーラ走行装置７により機体を牽引しながら、後方のロー
タリ１２で土を掻き上げていく。この時、クローラ走行
装置７を構成する支持フレーム８は図１に示す如くクロ
ーラベルト６片側の空間内に配置しており、即ち、該支
持フレーム８が正面視クローラベルト６の左右幅内から
突出することがないので幅狭の畝間を走行するにあたっ
て該支持フレーム８が畝側面Ａ，Ａに接触することがな
い。又、走行装置７を駆動する駆動スプロケット３は該
走行装置７の上部に配設しており、即ち該駆動スプロケ
ット３を軸支する走行伝動ケース２を該クローラ走行装
置７の上部側方位置に配置しているので、図１に示す如
く畝側面Ａ，Ａと該走行伝動ケース２が接触することが
ない。従って、支持フレーム８及び走行伝動ケース２を
畝側面Ａ，Ａに接触させることなく、畝間底面Ｂの左右
全幅に渡ってクローラベルト６を形成することができ、
十分な接地面積を確保して機体の安定性及び牽引力を向
上させることができるのである。尚、請求の範囲の項に
図面との対象と便利にする為に番号を記すが、この記入
により本発明は添付図面の構造に限定されるものではな
い。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling device for a walking-type management machine used for farm work, and more particularly, to a narrow space between soil and the like on a fence. The present invention relates to a traveling device for a walking type management machine that can travel suitably. 2. Description of the Related Art Conventionally, a traveling device of a walking type management machine for work between furrows is generally constituted by a single wheel type traveling device. However, in the case where the traveling device is constituted by a single wheel as in the prior art described above, the contact area between the wheel and the ground is small and the traction force is lacking. Therefore, it is conceivable to increase the ground contact area by configuring the traveling device as a crawler traveling device to improve the traction force. In general, in a crawler traveling device, a traveling transmission case that drives the crawler traveling device, a support frame that supports a wheel, and the like are disposed on the side of the crawler belt. It becomes wider than the width. Therefore, in the crawler traveling device that travels between narrow ridges, the traveling transmission case, the support frame, etc. come into contact with the ridges,
There is a case where the molded bag is broken or the straightness of the aircraft is hindered. Therefore, in the present invention, the crawler belt can be sufficiently secured in the lateral width and the traction force can be reliably improved, while the support structure of the crawler travel device is configured to be as narrow as possible to solve the above problems. It is something to try. [0004] A gear box provided in the center of the fuselage.
Motor 11 in front of the case 1
The rotary 12 is connected via a rotary transmission case 13
From the upper part of the fuselage.
In the walking type management machine that extends the rudder 18 upward and rearward
A traveling transmission case 2 is extended below the gear case 1, a drive sprocket 3 is pivotally supported on one side of the lower end portion of the traveling transmission case 2, and the lower end portion of the traveling transmission case 2 is also on the same side. the support frame 8 is extended downward from a plurality of contact
The ground-side rollers 5 , 5 are pivotally supported at a position below the drive sprocket 3, and the crawler belt 6 is wound around the plurality of rollers 5 , 5 and the drive sprocket 3 to travel below the center position of the machine body.
A single tall crawler traveling device 7 connected to and attached to the lower end of the transmission case 2 is configured, and the support frame 8 is positioned within the lateral width of the crawler belt 6 when viewed from the front. It was set as the structure of the running apparatus of the walk type management machine which becomes. [0006] In general, the kite has a trapezoidal shape or a parabolic curved shape in cross section. Gutter side surfaces A, A inclined upward and outward, and a gutter bottom surface B connecting the gutter side surfaces A, A
It is formed by. That is, the space between the ridges is formed by ridge side surfaces A, A inclined outward in the left and right directions so that the width in the left and right directions becomes wider toward the upper side. In the walking type management machine according to claim 1, the support frame 8 that pivotally supports the plurality of wheels 4 and 5 is positioned within the lateral width of the crawler belt 6 when viewed from the front. The support frame 8 does not come into contact with the side surfaces A and A when traveling in a narrow space without protruding from the lateral width of the crawler belt 6. Further, in this walking type management machine, the drive sprocket 3 is pivotally supported on the lower end portion of the traveling transmission case 2,
Similarly, it is attached to the lower end of the traveling transmission case 2 and is
The grounding side rollers 5 and 5 are pivotally supported on the extended support frame 8.
Since the driving sprocket 3 is arranged on the upper part of the crawler traveling device 7 and the crawler traveling device 7 is configured to be tall, the traveling transmission case 2 that drives the crawler traveling device 7 is disposed in the upper part of the wide left and right ribs. The traveling transmission case 2 does not come into contact with the side surfaces A and A when traveling between the ridges. Therefore, in the walk-management machine of the present invention, the aircraft center position under
A single crawler traveling device 7 provided on the side can travel in a narrow space without being in contact with the left and right side surfaces A, A, and the crawler belt 6 is formed over the entire left and right width of the bottom surface B between the spaces. A ground contact area can be secured. Embodiments of the present invention will now be described with reference to the drawings. The gear case 1 provided in the center of the machine body transmits the power from the front prime mover 11 to the traveling device 7 and the rotary 12 provided below, and performs traveling and agricultural work. The traveling device 7 is attached to the lower end portion of the traveling transmission case 2 extending downward and forward from the gear case 1, and the rotary 12 is attached to the lower end portion of the rotary transmission case 13 extending downward and rearward from the gear case 1. The apparatus 7 and the rotary 12 are configured to be arranged back and forth at the center of the left and right sides of the machine body. Above the rotary 12, a mounting cover 14 extending rearward from the gear case 1 is provided with a rotary cover 15 for preventing the scattering of soil upward from the machine body, and the forward scattering of the soil is prevented at the front end of the rotary cover 15. A front cover 16 is attached for prevention. Reference numeral 17 denotes a resistance rod that adjusts the depth of the rotary 12 and extends downward from the mounting frame 14. A handle bar 18 is erected on the upper part of the gear case 1 upward and rearward so that an operator walking behind the machine body can perform a steering operation with the rear end of the handle bar 18 held. Reference numerals 19 and 19 denote grips attached to the rear end of the handle bar 18, 20 a finger clutch lever for intermittently driving power to the rotary 12, 21 a stand lever for rotating the stand 22, and 23 for changing the traveling speed. A lever 24 is a main clutch lever that interrupts power to the gear case 1, and each lever 20, 21,
23 and 24 are grips 19 and 19 at the rear end of the handle rod 18.
It is provided in the vicinity so that it is convenient for maneuvering during work. The handle rod 18 is composed of two pipe rods extending radially in plan view with the gear case 1 as the center, and the left and right pipe rods are connected and reinforced by the connecting plate 25 at the front and rear intermediate portions thereof. A safety switch 26 is disposed at the center of the connecting plate 25. When the switch 26 is pressed, the driving of the prime mover 11 is stopped. In front of the gear case 1 is a motor 11.
A mounting base 27 for mounting is formed, and the motor 11 mounted on the mounting base 27 and the gear case 1 are connected by a belt to enable power transmission. Reference numeral 28 denotes a transmission cover that covers the power transmission portion of the belt, and reference numeral 29 denotes a prime mover cover that covers the upper surface of the prime mover 11. A rotary lever 30 for operating the rotational speed and direction of the rotary 12 is provided on the left and right sides of the gear case 1, and a traveling operation lever 31 for operating the traveling speed and the forward / backward direction is provided on the other side.
Is provided. A bumper frame 32 having a planar gate shape is attached to the front end of the airframe to protect the airframe from obstacles that collide from the front of the airframe. The traveling device 7 includes a driving sprocket 3 that is pivotally supported on one side of the lower end of the traveling transmission case 2 and a support frame 8 that extends from the same side of the lower end of the traveling transmission case 2.
The crawler belt 6 is wound around a plurality of wheels 4 and 5 that are pivotally supported by a single crawler traveling device 7.
The plurality of rollers 4, 5 are constituted by outer contact wheels 5, 5 on the inner ground side, and the outer rollers 5, 5 are formed on the crawler belt 6 with left and right slip prevention protrusions 9, 10. The crawler belt 6 is biased and arranged on one side so that only the inner one projection 10 is sandwiched from both sides, so that a space is formed on the other side of the crawler belt 6 and the support frame 8 can be arranged in the space. doing. The drive sprocket 3 that is pivotally supported by the traveling transmission case 2 is disposed on the crawler traveling device 7 as shown in FIG. 1, that is, the traveling transmission case 2 is located on the upper side of the crawler traveling device 7. Placed in position. Reference numeral 33 denotes a soil scraper, which is a soil scraper 3 arranged along the outer rollers 5 and 5.
4 and the earth removal projection 35 projecting from the earth removal plate 34 to the recesses of the outer ring 5 and 5, and fixed to the attachment portions 36 and 36 formed on the support frame 8 with bolts 37 and 37. Yes. When the above-structured walking type management machine is used to carry out the soil raising work on the ridge, the soil is removed by the rear rotary 12 while pulling the machine body by one crawler traveling device 7 formed below the machine body. I'm going to scrape it up. At this time, the support frame 8 constituting the crawler traveling device 7 is disposed in the space on one side of the crawler belt 6 as shown in FIG. 1, that is, the support frame 8 protrudes from the lateral width of the crawler belt 6 when viewed from the front. Therefore, the support frame 8 does not come into contact with the side surfaces A and A when traveling in a narrow space. The driving sprocket 3 for driving the traveling device 7 is disposed on the upper portion of the traveling device 7, that is, the traveling transmission case 2 that pivotally supports the driving sprocket 3 is located at the upper side position of the crawler traveling device 7. Since they are arranged, the side surfaces A and A and the traveling transmission case 2 do not contact each other as shown in FIG. Accordingly, the crawler belt 6 can be formed over the entire left and right widths of the bottom surface B of the collar without bringing the support frame 8 and the traveling transmission case 2 into contact with the collar surfaces A and A.
A sufficient ground contact area can be secured to improve the stability and traction of the aircraft. It should be noted that although numbers are given in the claims section for the purpose of convenience with the drawings, the present invention is not limited to the structure of the attached drawings by this entry.
【図面の簡単な説明】
【図１】（ａ）本発明実施例における走行装置７の正面
図。
（ｂ）本発明実施例における走行装置７の一部切断した
正面図
【図２】本発明実施例における走行装置７の側面図。
【図３】本発明実施例における全体側面図。
【図４】本発明実施例における全体平面図。
【図５】本発明実施例における外転輪５，５と土除スク
レパ３３の位置関係を示す図。
【符号の説明】
１ ギヤケース
２ 走行伝動ケース
３ 駆動スプロケット
４ 転輪
５ 転輪
６ クローラベルト
７ 走行装置
８ 支持フレーム
９ 外れ止め突起
１０ 外れ止め突起BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A is a front view of a traveling device 7 in an embodiment of the present invention. (B) Front view in which the traveling device 7 in the embodiment of the present invention is partly cut. FIG. 2 is a side view of the traveling device 7 in the embodiment of the present invention. FIG. 3 is an overall side view of an embodiment of the present invention. FIG. 4 is an overall plan view of an embodiment of the present invention. FIG. 5 is a view showing a positional relationship between outer wheel 5, 5 and soil scraper 33 in the embodiment of the present invention. [Explanation of Symbols] 1 Gear case 2 Traveling transmission case 3 Drive sprocket 4 Roller wheel 5 Roller wheel 6 Crawler belt 7 Traveling device 8 Support frame 9 Detachment projection 10 Detachment projection
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B62D 55/07 A01B 33/08 B62D 51/06 ──────────────────────────────────────────────────── ─── Continued from the front page (58) Fields surveyed (Int.Cl. 7 , DB name) B62D 55/07 A01B 33/08 B62D 51/06
Claims (1)
原動機（１１）を該ギヤケース（１）後方下方にはロー
タリ伝動ケース（１３）を介してロータリ（１２）を連
結配置し、又、機体上部からは機体の操縦操作を行うハ
ンドル杆（１８）を後方上方に向けて延設する歩行型管
理機において、該ギヤケース（１）下方に走行伝動ケー
ス（２）を延設し、該走行伝動ケース（２）の下端部一
側に駆動スプロケット（３）を片持状に軸支し、同じく
該走行伝動ケース（２）の下端部同側から支持フレーム
（８）を下方に延設して複数の接地側転輪（５）,
（５）を駆動スプロケット（３）より下方位置に軸支
し、これら複数の転輪（５）,（５）と駆動スプロケッ
ト（３）にクローラベルト（６）を巻回して機体中心位
置下方に該走行伝動ケース（２）下端部に連結取着され
る単一の背高のクローラ走行装置（７）を構成すると共
に、該支持フレーム（８）を正面視クローラベルト
（６）の左右幅内に位置させてなる歩行型管理機の走行
装置。(57) [Claims] [Claim 1] In front of the gear case (1) provided in the center of the fuselage
Move the prime mover (11) to the gear case (1)
The rotary (12) is connected through the transmission case (13).
In addition, the aircraft is operated from the top of the aircraft.
A walk-type tube that extends the ridge (18) upward and rearward
In the machine, a traveling transmission case (2) is extended below the gear case (1), and a drive sprocket (3) is pivotally supported on one side of the lower end of the traveling transmission case (2). A supporting frame (8) extending downward from the same side of the lower end of the traveling transmission case (2) to form a plurality of ground-side wheels (5) ,
(5) is pivotally supported at a position below the drive sprocket (3), and the crawler belt (6) is wound around the plurality of rollers (5) , (5) and the drive sprocket (3) to center the machine body.
Connected to the lower end of the traveling transmission case (2) below the installation
The walking device of the walking type management machine is configured such that the support frame (8) is positioned within the left and right width of the front-view crawler belt (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34825099A JP3386423B2 (en) | 1999-12-08 | 1999-12-08 | Traveling device for walking type management machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34825099A JP3386423B2 (en) | 1999-12-08 | 1999-12-08 | Traveling device for walking type management machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001163273A JP2001163273A (en) | 2001-06-19 |
| JP3386423B2 true JP3386423B2 (en) | 2003-03-17 |
Family
ID=18395772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34825099A Expired - Lifetime JP3386423B2 (en) | 1999-12-08 | 1999-12-08 | Traveling device for walking type management machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3386423B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015158035A1 (en) * | 2014-04-14 | 2015-10-22 | 邓光辉 | Continuous track self-propelled dual-ridger |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115257908A (en) * | 2022-08-24 | 2022-11-01 | 梁树光 | Crawler belt conveying device with damping function |
-
1999
- 1999-12-08 JP JP34825099A patent/JP3386423B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015158035A1 (en) * | 2014-04-14 | 2015-10-22 | 邓光辉 | Continuous track self-propelled dual-ridger |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001163273A (en) | 2001-06-19 |
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