JPH0255243B2 - - Google Patents
Info
- Publication number
- JPH0255243B2 JPH0255243B2 JP59158369A JP15836984A JPH0255243B2 JP H0255243 B2 JPH0255243 B2 JP H0255243B2 JP 59158369 A JP59158369 A JP 59158369A JP 15836984 A JP15836984 A JP 15836984A JP H0255243 B2 JPH0255243 B2 JP H0255243B2
- Authority
- JP
- Japan
- Prior art keywords
- transmission
- sleeve
- spring
- gear
- rotating shaft
- 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
- 230000005540 biological transmission Effects 0.000 claims description 105
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H35/00—Gearings or mechanisms with other special functional features
- F16H35/10—Arrangements or devices for absorbing overload or preventing damage by overload
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arrangement Of Transmissions (AREA)
- Arrangement And Driving Of Transmission Devices (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は伝動ケースの両側端面に亘つて架設さ
れる回転軸に、スラスト移動自在かつ相対回転不
能に伝動スリーブを外嵌するとともに、前記回転
軸の一端側に回転伝動部材を遊嵌支持し、この回
転伝動部材の側面と前記伝動スリーブの一端に設
けたフランジとの間にトルク制限機構を介在する
とともに、前記伝動スリーブの他端部に接当作用
して該スリーブを回転伝動部材側に押圧付勢して
トルク制限機構にトルク伝動用スラスト付勢力を
与えるバネを、回転軸に外嵌して装備してある移
動農機の伝動構造に関する。Detailed Description of the Invention [Industrial Application Field] The present invention provides a transmission case in which a transmission sleeve is externally fitted onto a rotating shaft installed across both end surfaces of a transmission case so as to be movable in thrust and non-rotatable relative to each other. A rotational transmission member is loosely fitted and supported on one end of the shaft, a torque limiting mechanism is interposed between a side surface of the rotational transmission member and a flange provided at one end of the transmission sleeve, and a torque limiting mechanism is provided at the other end of the transmission sleeve. This invention relates to a power transmission structure for a mobile agricultural machine, in which a spring is fitted around a rotating shaft and is equipped with a spring that acts in contact and urges the sleeve toward a rotational power transmission member to provide a torque transmission thrust force to a torque limiting mechanism. .
この種の伝動構造として従来より知られている
ものの一つに実開昭56−87633号公報に開示され
たものがある。つまり、前記回転伝動部材を前記
伝動ケースの一側端面に近接させて配置し、前記
伝動ケースの両側端面の略中間位置にバネを配置
して、前記回転伝動部材とバネを前記回転軸に取
付支持していた。
One of the conventionally known transmission structures of this type is disclosed in Japanese Utility Model Application Publication No. 56-87633. That is, the rotational transmission member is placed close to one end surface of the transmission case, the spring is placed approximately in the middle of both end surfaces of the transmission case, and the rotational transmission member and spring are attached to the rotation shaft. I supported it.
従つて、前記伝動スリーブの占める長さは、回
転軸長さの略1/2位のものであるため、この回転
軸より伝動スリーブに動力伝達するに必要な長さ
ではあつても、前記フランジの前記回転伝動部材
に対する倒れを抑えるに十分な長さではなかつ
た。その為にバネの付勢力に抗して摺動する際
に、姿勢が変化し易く、コジレなどによつて円滑
なトルク制限機構が阻害される虞れがあつた。
Therefore, since the length occupied by the transmission sleeve is approximately 1/2 of the length of the rotating shaft, even if the length is necessary for transmitting power from the rotating shaft to the transmission sleeve, the flange The length was not sufficient to prevent the rotary transmission member from collapsing. Therefore, when sliding against the biasing force of the spring, the posture tends to change, and there is a risk that the smooth torque limiting mechanism may be disturbed due to twisting or the like.
本発明の目的は円滑なトルク制限作動が行え、
その為に行なわれた改造を利用して、伝動構造を
コンパクト化できるものを提供する点にある。 The purpose of the present invention is to perform smooth torque limiting operation,
The purpose of this invention is to provide a transmission structure that can be made more compact by utilizing the modifications made for this purpose.
本発明による特徴構成は前記伝動ケースの一側
端面に近接させて前記回転伝動部材を配置すると
ともに前記伝動ケースの他側端面に近接させて前
記バネを配置して、前記回転伝動部材及び前記バ
ネを前記回転軸に取付支持し、前記回転伝動部材
と前記バネとの間に位置する伝動スリーブの外周
面に対して他の伝動機構の一部を近接させて設け
てある点にあり、その作用効果は次の通りであ
る。
A characteristic configuration according to the present invention is that the rotation transmission member is disposed close to one end surface of the transmission case, and the spring is disposed close to the other end surface of the transmission case, so that the rotation transmission member and the spring are disposed close to each other. is mounted and supported on the rotating shaft, and a part of another transmission mechanism is provided close to the outer peripheral surface of the transmission sleeve located between the rotational transmission member and the spring, and its operation is The effects are as follows.
つまり、前記回転伝動部材に対向配置されるフ
ランジと、伝動スリーブの他端部に作用するバネ
とを、夫々、伝動ケースの両側端部に近接して配
置してあるので、伝動スリーブの回転軸に対する
外嵌長さをできるだけ長尺のものにでき、バネ付
勢力によつて伝動スリーブに姿勢変更力が作用し
たとしても、回転軸に対する伝動スリーブの嵌合
隙間が同一のものであれば、その外嵌長さが長く
なつた分だけ、スリーブの姿勢変更角度は小にな
り、コジレ等を起すことなくより円滑なトルク制
限作動が行なえる。
In other words, since the flange facing the rotation transmission member and the spring acting on the other end of the transmission sleeve are respectively arranged close to both ends of the transmission case, the rotation axis of the transmission sleeve is Even if the external fitting length of the transmission sleeve can be made as long as possible and a posture changing force is applied to the transmission sleeve by the spring biasing force, if the fitting clearance of the transmission sleeve to the rotating shaft is the same, then the As the external fitting length becomes longer, the angle at which the sleeve changes its posture becomes smaller, allowing for smoother torque limiting operation without causing twisting or the like.
又、この伝動スリーブのフランジと他端に接当
したバネとの間の伝動スリーブ周りに、スリーブ
が長くなつた分だけ大きな空間が形成され、この
空間に対して他の伝動機構の一部を配設すること
によつて、伝動機構配置が凝縮して行え、伝動構
造のコンパクト化が可能である。 In addition, a larger space is formed around the transmission sleeve between the flange of the transmission sleeve and the spring that is in contact with the other end due to the length of the sleeve. By arranging it, the transmission mechanism can be arranged in a condensed manner, and the transmission structure can be made compact.
その結果、トルク制限構構にかかるメインテナ
ンス頻度が減少するとともに、伝動構造自体もコ
ンパクト化が図れ、移動農機に搭載するにその配
置構成に対する許容度が大になる。
As a result, the frequency of maintenance required for the torque limiting mechanism is reduced, the transmission structure itself can be made more compact, and the tolerance for its arrangement when mounted on a mobile agricultural machine is increased.
第３図に示すように、機体後方向に向かう出力
軸１を備えたエンジン２の後面に伝動ケースとし
てのミツシヨンケース３を直結するとともに、こ
のミツシヨンケース３から下端に車輪４，４を軸
支した車輪伝動ケース部３Ａを下方に延出し、か
つ、ミツシヨンケース３の後部に設けられた連結
用ヒツチ５に作業装置６の一つである耕耘装置を
軸支した作業装置用伝動ケース７を取付固定する
とともに、ミツシヨンケース３横側部に突設した
PTO軸８と耕耘装置６側入力軸との間に副伝動
ケース９を架設して、もつてPTO伝動構造を形
成し、更に、前後軸心Ｘ周りで上下揺動可能に耕
耘カバー１０を機体に枢支して歩行型耕耘機を構
成してある。
As shown in FIG. 3, a transmission case 3 is directly connected to the rear of the engine 2, which has an output shaft 1 directed toward the rear of the aircraft, and wheels 4, 4 are connected to the lower end of the transmission case 3. A power transmission case for a working device in which a shaft-supported wheel transmission case portion 3A extends downward, and a tilling device, which is one of the working devices 6, is pivotally supported on a connecting hitch 5 provided at the rear of the mission case 3. 7 is installed and fixed, and a protrusion is provided on the side of the transmission case 3.
A sub-transmission case 9 is installed between the PTO shaft 8 and the input shaft on the tilling device 6 side to form a PTO transmission structure, and the tilling cover 10 is attached to the machine body so as to be able to swing up and down around the longitudinal axis X. A walking-type tiller is constructed by supporting the rotary tiller.
第１図及び第２図に示すように、ギヤミツシヨ
ンＨ構造を詳述すると、ミツシヨンケース３の前
端部に前記エンジン出力軸１２にベベルギヤ連動
された横向き回転軸１１を設けるとともに、前記
回転軸１１と平行に横軸型の第１回転軸１３、第
回転軸１４、PTO軸８、第回転軸１６、最
終変速軸１７を組込み、第回転軸１３及び第
回転軸１４には主クラツチ兼用で高低２段に切換
可能なシンクロメツシユ式の第１ギヤ変速機構
H1を設けてある。 As shown in FIGS. 1 and 2, the gear transmission H structure is explained in detail. A horizontal rotating shaft 11 is provided at the front end of the transmission case 3 and is interlocked with the engine output shaft 12 by a bevel gear. A horizontal shaft-type first rotating shaft 13, a first rotating shaft 14, a PTO shaft 8, a second rotating shaft 16, and a final gear shift shaft 17 are installed in parallel with the main clutch. Synchronous mesh type 1st gear transmission mechanism that can be switched to two stages
H 1 is provided.
前記PTO軸８には、軸８と一体成形されたギ
ヤ１９及び一体回転可能に嵌着されたギヤ１８を
設けるとともに、長尺のボス部を有する大径ギヤ
２０を遊嵌し、この大径ギヤ２０のボス部に軸心
方向に摺動可能な二段ギヤ２１をスプライン嵌合
してある。又、前記第回転軸１６には受動ギヤ
３５を嵌着するとともに、軸一体成形ギヤ２２を
設け、更に、軸心方向に摺動可能に二段ギヤ２６
をスプライン嵌合するとともに、内歯３４Ａ及び
大小二様の外歯を一体形成した３段ギヤ３４をべ
アリング支承してある。そして、最終変速軸１７
には大径２４及び小径ギヤ２５を嵌着するととも
に、車軸２７への伝動用スプロケツト３６を嵌着
してある。 The PTO shaft 8 is provided with a gear 19 integrally molded with the shaft 8 and a gear 18 fitted so as to be able to rotate integrally with the shaft 8, and a large diameter gear 20 having a long boss portion is loosely fitted. A two-stage gear 21 slidable in the axial direction is spline-fitted to the boss portion of the gear 20. Further, a passive gear 35 is fitted to the first rotating shaft 16, and a gear 22 integrally formed with the shaft is provided, and a two-stage gear 26 is further provided so as to be slidable in the axial direction.
A three-stage gear 34, which is integrally formed with internal teeth 34A and external teeth of two sizes, is supported by a bearing. And the final gear shift shaft 17
A large diameter gear 24 and a small diameter gear 25 are fitted therein, and a transmission sprocket 36 to the axle 27 is fitted therein.
以上の構成をもとに、第回転軸１４に嵌着さ
れた二段ギヤ１５を、PTO軸８のギヤ１８に咬
合させて、耕耘装置６に動力伝動するように構成
するとともに、前記PTO軸８に設けられた二段
ギヤ２１の最終変速軸１７に嵌着された大径ギヤ
２４及び前記３段ギヤ３４の外歯への選択咬合に
よつて、前記ギヤ１９及び３５、並びに、２２及
び２０の咬合伝動を介してPTO軸８に伝動され
た動力を正逆切換えて最終変速軸１７に伝達可能
な前後進変速機構を設けてある。 Based on the above configuration, the two-stage gear 15 fitted on the second rotating shaft 14 is configured to mesh with the gear 18 of the PTO shaft 8 to transmit power to the tilling device 6, and the PTO shaft The gears 19 and 35, 22 and A forward/reverse transmission mechanism is provided which can switch forward and reverse the power transmitted to the PTO shaft 8 via the occlusal transmission 20 and transmit it to the final transmission shaft 17.
前記第回転軸１６にスプライン嵌合された二
段ギヤ２６の横摺動によつて、最終変速軸１７の
大径ギヤ２４及び３段ギヤ３４の内歯３４Ａとに
各別に二段ギヤ２６を咬合させ、PTO軸８から
伝達された動力を前記前後進変速機構H2と独立
した状態で高低二段に変速可能な第ギヤ変速機
構H3を設けてある。 By the lateral sliding of the second gear 26 spline-fitted to the second rotating shaft 16, the second gear 26 is separately attached to the large diameter gear 24 of the final transmission shaft 17 and the internal teeth 34A of the third gear 34. A second gear transmission mechanism H3 is provided which can shift the power transmitted from the PTO shaft 8 into two high and low gears independently of the forward and backward transmission mechanism H2 .
以上、第ギヤ変速機構H1と第ギヤ変速機
構H3の協働で前進４段、及び、第ギヤ変速機
構H1と前後進変速機構H2の協働で後進２段に切
換え可能なギヤミツシヨンＨを構成している。 As described above, the gear transmission is capable of switching to four forward speeds through the cooperation of the first gear transmission mechanism H 1 and the third gear transmission mechanism H 3 , and to two reverse speeds through the cooperation of the first gear transmission mechanism H 1 and the forward/reverse transmission mechanism H 2 . It constitutes H.
前記ミツシヨンケース３の前方下方に向けて延
出された車輪伝動ケース部３Ａの下端に軸支され
た車軸２７をチエーンスプロケツト２８のボス部
２８Ａ内に突合せ遊嵌された左右一対のものから
構成し、チエーンスプロケツトのボス部２８Ａと
車軸２７に形成された凹部とに亘つてボール式の
クラツチ機構２９を設けるとともに、前記最終変
速軸１７からの駆動力をチエーン３０左右の車軸
２７に別々に伝達可能に構成している。 The axle 27, which is pivotally supported at the lower end of the wheel transmission case portion 3A extending downward and forward of the transmission case 3, is butted into the boss portion 28A of the chain sprocket 28, and the left and right pair of loosely fitted A ball-type clutch mechanism 29 is provided between the boss portion 28A of the chain sprocket and the recess formed in the axle 27, and the driving force from the final shift shaft 17 is transmitted separately to the left and right axles 27 of the chain 30. It is configured so that it can be transmitted.
前記前後進変速機構H2及び第ギヤ変速機構
H3の二段ギヤ２１及び２６に対するシフトフオ
ーク軸３１及び３２はボール式の牽制機構（図示
せず）が設けられ、同時作動ができないよう構成
されている。 The forward and backward transmission mechanism H2 and the third gear transmission mechanism
The shift fork shafts 31 and 32 for the two-stage gears 21 and 26 of H3 are provided with a ball-type check mechanism (not shown) and are configured to prevent simultaneous operation.
前記ミツシヨンケース３の左右両側面に亘つて
枢支された回転軸１１に対して、前記ミツシヨン
ケース３の一側端面に近接させて前記回転伝動部
材の一つである伝動ギヤを配置するとともに、前
記ミツシヨンケース３の他側端面に近接させて後
記するバネ４１を配置して、前記伝動ギヤ３８を
遊嵌支持するとともに、前記バネ４１を取付支持
する。 A transmission gear, which is one of the rotation transmission members, is disposed close to one end surface of the transmission case 3 with respect to a rotation shaft 11 that is pivotally supported across both left and right sides of the transmission case 3. At the same time, a spring 41, which will be described later, is disposed close to the other end surface of the transmission case 3 to loosely fit and support the transmission gear 38, and to attach and support the spring 41.
前記伝動ギヤ３８とバネ４１との間に長尺の伝
動スリーブ３７を位置させて、回転軸１１にスラ
スト移動自在かつ相対回転不能に外嵌するととも
に、この伝動ギヤ３８の側面と、前記伝動スリー
ブ３７の一端に設けたフランジ３７Ａとの間に、
相対向する表面の同一半径位置に複数個の係合孔
３８ａ，３７ａを形成するとともに、各対応する
係合孔３８ａ，３７ａにボール状の伝動部材３９
を内装保持して、もつて、伝動スリーブ３７から
伝動部材３９を介して、伝動ギヤ３８に動力伝達
可能なトルク制限機構４０を構成している。 A long transmission sleeve 37 is positioned between the transmission gear 38 and the spring 41, and externally fitted onto the rotating shaft 11 so as to be movable in thrust and non-rotatable relative to each other. Between the flange 37A provided at one end of 37,
A plurality of engagement holes 38a, 37a are formed at the same radial position on opposing surfaces, and a ball-shaped transmission member 39 is provided in each corresponding engagement hole 38a, 37a.
is held internally, thereby forming a torque limiting mechanism 40 capable of transmitting power from the transmission sleeve 37 to the transmission gear 38 via the transmission member 39.
前記伝動スリーブ３７の他端部に、該伝動スリ
ーブ３７を伝動ギヤ３８側に押圧付勢してトルク
制限機構４０にトルク伝動用スラスト付勢力を与
える皿バネ４１を回転軸１１に外嵌して装備し、
もつて、皿バネ４１による付勢力に抗するトルク
が働いた場合に、伝動部材３９が係合孔３８ａ又
は３７ａから脱出し伝動スリーブ３７と伝動ギヤ
３８との動力伝達を断つよう構成してある。 A disc spring 41 is fitted around the rotating shaft 11 at the other end of the transmission sleeve 37 to press and bias the transmission sleeve 37 toward the transmission gear 38 and apply a thrust biasing force for transmitting torque to the torque limiting mechanism 40. equipped,
The transmission member 39 is configured to escape from the engagement hole 38a or 37a and cut off power transmission between the transmission sleeve 37 and the transmission gear 38 when a torque that resists the biasing force of the disc spring 41 is applied. .
前記フランジ３７Ａと皿バネ４１との間のスリ
ーブ３７外周面近傍に形成された空間に前記第
ギヤ変速機構H1の伝動機構の一部がスリーブ３
７に近接した状態で設けられている。 A part of the transmission mechanism of the first gear transmission mechanism H1 is inserted into the sleeve 3 in a space formed near the outer peripheral surface of the sleeve 37 between the flange 37A and the disc spring 41.
It is located close to 7.
前記トルク制限機構４０としては、伝動ギヤ３
８の側面とフランジ３７Ａとに夫々凹凸状の係合
部を設けてもよく、又、ギヤ状に形成して構成し
てもよい。
As the torque limiting mechanism 40, the transmission gear 3
8 and the flange 37A may each have an uneven engaging portion, or may be formed into a gear shape.
バネ４１としてはコイル式のものでもよい。 The spring 41 may be of a coil type.
上記実施例のものは歩行型耕耘機だけでなく、
トラクタ及び運搬車等の他の移動農機に適用して
もよい。 The above embodiment is not only a walk-behind tiller, but also
It may also be applied to other mobile agricultural machinery such as tractors and transport vehicles.
図面は本発明に係る移動農機の伝動構造の実施
例を示し、第１図はミツシヨンケースの縦断背面
図、第２図はミツシヨンケースの縦断側面図、第
３図は歩行型耕耘機の側面図である。
１１……回転軸、３７……伝動スリーブ、３７
Ａ……フランジ、３８……回転伝動部材、４０…
…トルク制限機構、４１……バネ、H1……他の
伝動機構。
The drawings show an embodiment of the power transmission structure for a mobile agricultural machine according to the present invention, in which FIG. 1 is a vertical cross-sectional rear view of a transmission case, FIG. FIG. 11... Rotating shaft, 37... Transmission sleeve, 37
A...Flange, 38...Rotation transmission member, 40...
... Torque limiting mechanism, 41... Spring, H 1 ... Other transmission mechanism.
Claims (1)
回転軸１１に、スラスト移動自在かつ相対回転不
能に伝動スリーブ３７を外嵌するとともに、前記
回転軸１１の一端側に回転伝動部材３８を遊嵌支
持し、この回転伝動部材３８の側面と前記伝動ス
リーブ３７の一端に設けたフランジ３７Ａとの間
にトルク制限機構４０を介在するとともに、前記
伝動スリーブ３７の他端部に接当作用して該スリ
ーブ３７を回転伝動部材３８側に押圧付勢してト
ルク制限機構４０にトルク伝動用スラスト付勢力
を与えるバネ４１を、回転軸１１に外嵌して装備
してある移動農機の伝動構造であつて、前記伝動
ケース３の一側端面に近接させて前記回転伝動部
材３８を配置するとともに前記伝動ケース３の他
側端面に近接させて前記バネ４１を配置して、前
記回転伝動部材３８及び前記バネ４１を前記回転
軸１１に取付支持し、前記回転伝動部材３８と前
記バネ４１との間に位置する伝動スリーブ３７の
外周面に対して他の伝動機構H1の一部を近接さ
せて設けてある移動農機の伝動構造。1. A transmission sleeve 37 is externally fitted onto the rotating shaft 11 installed across both end surfaces of the transmission case 3 so as to be movable in thrust and non-rotatable relative to each other, and a rotating transmission member 38 is loosely fitted on one end side of the rotating shaft 11. A torque limiting mechanism 40 is interposed between the side surface of the rotary transmission member 38 and a flange 37A provided at one end of the transmission sleeve 37, and acts in contact with the other end of the transmission sleeve 37. A power transmission structure for a mobile agricultural machine in which a spring 41 that presses and biases a sleeve 37 toward a rotational transmission member 38 and applies a thrust biasing force for transmitting torque to a torque limiting mechanism 40 is fitted onto the rotating shaft 11. The rotation transmission member 38 is disposed close to one end surface of the transmission case 3, and the spring 41 is disposed close to the other end surface of the transmission case 3. A spring 41 is attached to and supported by the rotating shaft 11, and a part of another transmission mechanism H1 is provided in close proximity to the outer peripheral surface of the transmission sleeve 37 located between the rotation transmission member 38 and the spring 41. Transmission structure of a mobile agricultural machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15836984A JPS6136021A (en) | 1984-07-27 | 1984-07-27 | Transmission structure of traveling agricultural machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15836984A JPS6136021A (en) | 1984-07-27 | 1984-07-27 | Transmission structure of traveling agricultural machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6136021A JPS6136021A (en) | 1986-02-20 |
| JPH0255243B2 true JPH0255243B2 (en) | 1990-11-26 |
Family
ID=15670185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15836984A Granted JPS6136021A (en) | 1984-07-27 | 1984-07-27 | Transmission structure of traveling agricultural machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6136021A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0500269B1 (en) * | 1991-02-18 | 1997-05-07 | Mitsubishi Gas Chemical Company, Inc. | Polyacetal resin composition and its molded article |
| KR100808657B1 (en) * | 2006-07-10 | 2008-02-29 | (주)엠에스정밀 | Driveline of transmission |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS606112A (en) * | 1983-06-22 | 1985-01-12 | 井関農機株式会社 | Safety clutch of rice planter |
-
1984
- 1984-07-27 JP JP15836984A patent/JPS6136021A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS606112A (en) * | 1983-06-22 | 1985-01-12 | 井関農機株式会社 | Safety clutch of rice planter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6136021A (en) | 1986-02-20 |
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