JPH07223451A - Power transmission having continuously variable transmission - Google Patents
Power transmission having continuously variable transmissionInfo
- Publication number
- JPH07223451A JPH07223451A JP3924294A JP3924294A JPH07223451A JP H07223451 A JPH07223451 A JP H07223451A JP 3924294 A JP3924294 A JP 3924294A JP 3924294 A JP3924294 A JP 3924294A JP H07223451 A JPH07223451 A JP H07223451A
- Authority
- JP
- Japan
- Prior art keywords
- transmission
- continuously variable
- case
- variable transmission
- input
- 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.)
- Pending
Links
Landscapes
- Soil Working Implements (AREA)
- Motor Power Transmission Devices (AREA)
- Transmission Devices (AREA)
- General Details Of Gearings (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、無段変速機付き動力伝
達装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power transmission device with a continuously variable transmission.
【０００２】[0002]
【従来の技術】従来のこの種の無段変速機付き動力伝達
装置として特開平４−２６６５３０号公報に記載された
技術がある。このものは、図５に示すように、無段変速
機２をミッションケース１にその内側からボルト４２で
締結している。2. Description of the Related Art As a conventional power transmission device with a continuously variable transmission of this type, there is a technique described in Japanese Patent Application Laid-Open No. 4-266530. As shown in FIG. 5, the continuously variable transmission 2 is fastened to the transmission case 1 from inside by bolts 42 as shown in FIG.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上記従来の技
術では、無段変速機２が締結されたミッションケース１
の一方側の分割ミッションケース７を他方側の分割ミッ
ションケース６に組付ける作業は煩わしく、その組付け
後は無段変速機２だけを取り外せないから、該無段変速
機２とミッションケース１の各内部の保守点検は困難で
ある。However, in the above conventional technique, the transmission case 1 to which the continuously variable transmission 2 is fastened.
The work of assembling the split mission case 7 on one side to the split mission case 6 on the other side is troublesome, and since only the continuously variable transmission 2 cannot be removed after the assembly, the continuously variable transmission 2 and the mission case 1 cannot be removed. Maintenance and inspection of each inside is difficult.
【０００４】本発明は、このような従来技術の問題点を
解決するためになされたもので、無段変速機のミッショ
ンケースへの組付け及び取り外しを簡便に行い得、それ
らの保守点検を容易に行うことが可能な無段変速機付き
動力伝達装置を提供することを目的とする。The present invention has been made in order to solve the above problems of the prior art, and can be easily attached to and detached from the transmission case of the continuously variable transmission, and maintenance and inspection thereof are easy. It is an object of the present invention to provide a power transmission device with a continuously variable transmission that can be performed.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、請求項１の発明は、ミッションケース側面に少なく
とも無段変速機の入出力軸嵌入用穴を設け、これらの穴
に前記無段変速機に小組みした入出力軸部材を嵌合させ
ると共に、無段変速機の入出力軸先端上に動力伝達用連
結部材を設け、出力軸端部にギヤを嵌合させ、このギヤ
と無段変速機のケース部との間に設けた軸受とシール部
材とを前記出力軸上に嵌合固定した前記無段変速機を前
記ミッションケース側面に外方から締結手段で着脱自在
に取付けたことを特徴とする。In order to achieve the above object, the invention according to claim 1 provides at least the input / output shaft fitting holes of the continuously variable transmission on the side surface of the transmission case, and these holes are provided with the continuously variable transmission. The small input / output shaft member is fitted to the transmission, the power transmission connecting member is provided on the tip of the input / output shaft of the continuously variable transmission, and the gear is fitted to the end of the output shaft. The continuously variable transmission, in which a bearing and a seal member provided between a case portion of the continuously variable transmission and the sealing member are fitted and fixed on the output shaft, is detachably attached to the side surface of the transmission case from outside by fastening means. Is characterized by.
【０００６】請求項２の発明は、ミッションケースの一
方側にミッション入力軸を、前記ミッションケースの他
方側に無段変速機の入出力軸を挿入し、前記ミッション
入力軸と無段変速機の入力軸とを前記ミッションケース
内で連結し、前記ミッション入力軸は前記ミッションケ
ースの一方側ケース部分の少なくとも２個所で支持し、
前記無段変速機の入力軸は該無段変速機の外側を囲むケ
ース及びミッションケースの他方側ケース部分に当接す
る基板とで支持したことを特徴とする。According to a second aspect of the present invention, the mission input shaft is inserted into one side of the mission case, and the input / output shaft of the continuously variable transmission is inserted into the other side of the mission case. An input shaft is connected in the mission case, and the mission input shaft is supported at at least two places on one side of the mission case;
The input shaft of the continuously variable transmission is supported by a case that surrounds the outside of the continuously variable transmission and a substrate that abuts on the other side case portion of the transmission case.
【０００７】また、請求項３の発明は、ミッション入力
軸及び無段変速機の入力軸を短く形成し、これら入力軸
を連結する接続カラーを長く形成したことを特徴とす
る。Further, the invention according to claim 3 is characterized in that the mission input shaft and the input shaft of the continuously variable transmission are formed to be short, and the connection collar connecting these input shafts is formed to be long.
【０００８】さらに、請求項４の発明は、前記無段変速
機を静油圧無段変速機とし、この変速機のケースとミッ
ションケースとの間に基板を設け、この基板に設けたオ
イル戻し穴の端部にシール筒を嵌入固定し、このシール
筒を基板よりミッションケース側の穴部に向け突出さ
せ、シール筒の突出端部をこの穴部に挿入したことを特
徴とする。Further, in the invention of claim 4, the continuously variable transmission is a hydrostatic continuously variable transmission, a substrate is provided between a case of the transmission and a transmission case, and an oil return hole provided in the substrate. The seal cylinder is fitted and fixed to the end of the seal cylinder, the seal cylinder is projected toward the hole on the mission case side from the substrate, and the protruding end of the seal cylinder is inserted into the hole.
【０００９】[0009]
【作用】上記請求項１の発明によれば、ミッションケー
スの外側から締結手段を緩めて無段変速機を取り外すこ
とにより、前記ミッションケースの内部及び前記無段変
速機の保守点検を行い、その保守点検終了後には再び前
記無段変速機の入出力軸部材を前記ミッションケース側
面の穴に嵌合し、かつ、該ミッションケース側面に前記
無段変速機を外方から締結手段で締め付け固定する。According to the first aspect of the invention, by loosening the fastening means from the outside of the mission case and removing the continuously variable transmission, maintenance and inspection of the inside of the transmission case and the continuously variable transmission are performed. After the maintenance and inspection, the input / output shaft member of the continuously variable transmission is fitted again into the hole on the side surface of the mission case, and the continuously variable transmission is externally fastened to the side surface of the transmission case by fastening means. .
【００１０】その際、軸受とシール部材とがミッション
ケースの出力軸嵌入用穴に密封状態で保持されるので、
出力軸まわりの強度向上を図るとともにオイル洩れを防
止している。At that time, since the bearing and the seal member are hermetically held in the output shaft fitting hole of the transmission case,
The strength around the output shaft is improved and oil leakage is prevented.
【００１１】上記請求項２の発明によれば、無段変速機
が装着された後、動力伝達装置を作動させると、ミッシ
ョン入力軸はミッションケースの一方側に軸支され、か
つ、無段変速機の入力軸は該変速機の外側を囲むケース
及び基板に軸支されて一体となって回動し、無段変速さ
れた動力を無段変速機の出力軸からミッションケース内
のギヤに伝達する。According to the second aspect of the present invention, when the power transmission is operated after the continuously variable transmission is mounted, the mission input shaft is pivotally supported on one side of the mission case and the continuously variable transmission is provided. The input shaft of the machine is pivotally supported by a case and a substrate surrounding the outside of the transmission and integrally rotates to transmit the continuously variable power from the output shaft of the continuously variable transmission to gears in the mission case. To do.
【００１２】上記請求項３の発明によれば、接続された
双方の入力軸の軸心のずれを接続カラーが吸収し、従っ
て芯出しを容易に行うことができる。According to the third aspect of the invention, the connecting collar absorbs the deviation of the axes of the two connected input shafts, so that the centering can be easily performed.
【００１３】上記請求項４の発明によれば、オイル洩れ
に対して簡単な構造の対策手段を設けたので、シール筒
が紛失することなく容易に組み込み、または組み外し可
能である。According to the fourth aspect of the present invention, since the countermeasure means having a simple structure against oil leakage is provided, the seal cylinder can be easily assembled or disassembled without being lost.
【００１４】[0014]
【実施例】以下、本発明の実施例を図面を参照しながら
詳細に説明する。Embodiments of the present invention will now be described in detail with reference to the drawings.
【００１５】図１は本発明の一実施例に係る無段変速機
付き動力伝達装置の展開縦断面図であり、１はトランス
ミッションケース、２は静油圧無段変速装置（以下「Ｈ
ＳＴ」と略称する）、３は動力伝達用プーリ、４は作業
用伝動プーリ、５は走行用伝達ケースである。FIG. 1 is an exploded vertical sectional view of a power transmission device with a continuously variable transmission according to an embodiment of the present invention. 1 is a transmission case, 2 is a hydrostatic continuously variable transmission (hereinafter referred to as "H").
(Abbreviated as "ST"), 3 is a power transmission pulley, 4 is a work transmission pulley, and 5 is a traveling transmission case.
【００１６】トランスミッションケース１は、左右の分
割ケース６，７を突き合わせてボルト８で締結して組立
てられ、内部に作業用変速装置９と走行用変速装置１０
（走行用伝達装置ともいう）とが組込まれている。The transmission case 1 is assembled by assembling the left and right split cases 6 and 7 and abutting them with bolts 8 and having a work transmission 9 and a traveling transmission 10 inside.
(Also referred to as a transmission device for traveling).
【００１７】該トランスミッションケース１内には図２
に示すように、左側の分割ケース６の外方より動力伝達
用入力軸Ｏ1が嵌入してその一端部１１ｂが分割ケース
６内に臨んで配され２つのベアリング１２で軸支され、
その動力伝達用入力軸Ｏ1の前記分割ケース６から外部
に突出した他端部１１ａに動力伝達用プーリ３が付設さ
れ、内部に突出した一端部１１ｂにはギヤＧ1及び接続
用ロッド部１１ｃが連続的に形成されている。前記２つ
のベアリング１２は前記入力軸Ｏ1を安定的に軸支すべ
く、前記ミッションケース１を外方に膨出させて形成さ
れた軸受用膨出筒１３内に一定間隔を置いて配置されて
いる。この動力伝達用入力軸Ｏ1の一端部１１ｂは、後
述するように、ＨＳＴ２を経由して走行用変速装置１０
に、ＨＳＴ２を経由せず作業用変速装置９に夫々連結さ
れている。FIG. 2 shows the inside of the transmission case 1.
As shown in, the power transmission input shaft O 1 is fitted from the outside of the left split case 6, one end 11b of the power transmission input shaft O 1 is arranged facing the split case 6, and is supported by two bearings 12.
A power transmission pulley 3 is attached to the other end portion 11a of the power transmission input shaft O 1 which protrudes from the split case 6 to the outside, and a gear G 1 and a connecting rod portion 11c are attached to the one end portion 11b which protrudes inside. Are continuously formed. The two bearings 12 are arranged at regular intervals in a bearing bulging cylinder 13 formed by bulging the transmission case 1 outward so as to stably support the input shaft O 1. ing. The one end portion 11b of the power transmission input shaft O 1 is, as will be described later, passed through the HST 2 and the transmission 10 for traveling.
In addition, they are respectively connected to the work transmission 9 without going through the HST 2.
【００１８】即ち、トランスミッションケース１内に臨
む動力伝達用入力軸Ｏ1の一端部１１ｂの周縁に形成さ
れたギヤＧ1は作業用変速装置９及び走行用変速装置１
０に連繋する中間軸Ｏ3に遊嵌されたギヤＧ2と噛合って
いる。That is, the gear G 1 formed at the peripheral edge of the one end 11b of the power transmission input shaft O 1 facing the transmission case 1 is the work transmission 9 and the traveling transmission 1.
It meshes with a gear G 2 loosely fitted to an intermediate shaft O 3 linked to 0.
【００１９】この中間軸Ｏ3は変速軸を兼ねる他、作業
系及び走行系の２系統の伝達軸を兼ねる。即ち、前記中
間軸Ｏ3はＨＳＴ２を経由して前記走行用伝達装置１０
に、またＨＳＴ２を経由せず直接的に作業用変速装置９
に夫々動力を伝達するようになっている。The intermediate shaft O 3 serves not only as a speed change shaft but also as a transmission shaft for two systems, a work system and a traveling system. That is, the intermediate shaft O 3 passes through the HST 2 and the traveling transmission device 10
In addition, the work transmission 9 directly without passing through the HST2.
The power is transmitted to each of them.
【００２０】前記入力軸Ｏ1は、その内端の接続用ロッ
ド部１１ｃがミッションケース１内でカラー１８を介し
てＨＳＴ２の入力軸Ｏ1′の突出している先端部２０と
連結され軸心を共通としている。The input shaft O 1 is connected at its inner end with a connecting rod portion 11c via a collar 18 in the mission case 1 to a projecting tip portion 20 of the input shaft O 1 ′ of the HST 2 so as to form an axial center. It is common.
【００２１】前記中間軸Ｏ3には、ギヤＧ3とギヤＧ4と
が遊嵌され、かつギヤＧ5とギヤＧ6とがスプライン嵌合
されている。On the intermediate shaft O 3 , a gear G 3 and a gear G 4 are loosely fitted, and a gear G 5 and a gear G 6 are spline fitted.
【００２２】ギヤＧ6は、ＨＳＴ２の出力軸Ｏ2のミッシ
ョンケース３内突出端部に固着されたギヤＧ11と噛み合
っている。The gear G 6 meshes with the gear G 11 fixed to the projecting end of the output shaft O 2 of the HST 2 in the transmission case 3.
【００２３】左側分割ミッションケース７の外側面に取
付けられたＨＳＴ２は、該外側面に直接接合された基板
２２と、該基板２２を貫通して前記右側分割ミッション
ケース７内まで同方向に延びるＨＳＴ入力軸Ｏ1′及び
ＨＳＴ出力軸Ｏ2と、これら各軸Ｏ1′，Ｏ2を中心にし
て前記基板２２の外側に配設された油圧ポンプ２３及び
油圧モータ２４と、これら油圧ポンプ２３及び油圧モー
タ２４を収容しかつ前記各軸Ｏ1′，Ｏ2を軸支して前記
基板２２に一体的に取付けられた単一のケース２５とで
主に構成され、このケース２５と基板２２とはボルト１
４等で固定されているいわゆる一体型のものである。そ
して、該ＨＳＴ２は、図３に示すように、ボルト４２を
介し、前記分割ミッションケース７に着脱自在に取り付
けられている。The HST 2 attached to the outer side surface of the left split mission case 7 has a substrate 22 directly joined to the outer side surface, and an HST extending through the substrate 22 in the same direction into the right side split mission case 7. The input shaft O 1 ′ and the HST output shaft O 2 , the hydraulic pump 23 and the hydraulic motor 24 arranged outside the substrate 22 around these shafts O 1 ′ and O 2 , and the hydraulic pump 23 and A single case 25 that houses the hydraulic motor 24 and axially supports the shafts O 1 ′ and O 2 and is integrally attached to the base plate 22 is mainly constituted by the case 25 and the base plate 22. Is bolt 1
It is a so-called integral type that is fixed by 4 etc. As shown in FIG. 3, the HST 2 is detachably attached to the divided mission case 7 via bolts 42.
【００２４】前記油圧ポンプ２３は、具体的には、図３
に示すように、ＨＳＴ入力軸Ｏ1′に固定されたシリン
ダブロック２６と、該シリンダブロック２６の軸心廻り
に円周方向に配列されて形成され、一端が開放する複数
の軸方向のプランジャ孔２７と、該各プランジャ孔２７
に出没自在に嵌挿されたプランジャ２８と、該各プラン
ジャ２８の出没ストロークを自在に調整する可動斜板２
９とで構成されている。そして各プランジャ孔２７のヘ
ッド側は基板２２内等に形成された油回路３６に連通可
能となっている。The hydraulic pump 23 is specifically shown in FIG.
As shown in FIG. 5, a cylinder block 26 fixed to the HST input shaft O 1 ′ and a plurality of axial plunger holes formed in an array in the circumferential direction around the axis of the cylinder block 26 and having one end opened. 27 and each of the plunger holes 27
And a movable swash plate 2 for freely adjusting the retracting stroke of each plunger 28.
It is composed of 9 and 9. The head side of each plunger hole 27 can communicate with an oil circuit 36 formed in the substrate 22 or the like.
【００２５】他方、油圧モータ２４は、ＨＳＴ出力軸Ｏ
2に固定されたシリンダブロック３２と、該ブロック３
２の軸心廻りに円周方向に配列されて形成され、一端が
解放する複数の軸方向のプランジャ孔３３と、該各プラ
ンジャ孔３３に出没自在に嵌挿されたプランジャ３４
と、該各プランジャ３４の出没ストロークを一定に調整
する固定斜板（モータ回転斜板）３５とで構成される。
そして、この各プランジャ孔３３のヘッド側も上記同様
基板２２内等に形成された油回路３６に連通可能となっ
ている。On the other hand, the hydraulic motor 24 has the HST output shaft O
Cylinder block 32 fixed to 2 and the block 3
A plurality of axial plunger holes 33 that are formed in a circumferential arrangement around the shaft center of the two and one end of which opens, and a plunger 34 that is inserted into and retractable from each of the plunger holes 33.
And a fixed swash plate (motor rotation swash plate) 35 for adjusting the retracting stroke of each plunger 34 to a constant value.
The head side of each plunger hole 33 can also communicate with the oil circuit 36 formed in the substrate 22 or the like as described above.
【００２６】この油回路３６は、同図３に示すように、
油圧ポンプ２３と油圧モータ２４とを相互に接続する高
圧油路３７及び低圧油路３８から成るが、これら高圧油
路３７と低圧油路３８とは共通のオイルフィルタ３９及
びトロコイドポンプ４０を備え、かつミッションケース
１に連通するオイル供給穴５２によってオイルタンクを
兼ねるミッションケース１に連通し、油を供給されるよ
うになっており、また、リリーフバルブ４３を備える油
路４４によってミッションケース１に余分な油を油路３
７，３８内圧力が一定圧以上になると放出するようにな
っている。This oil circuit 36, as shown in FIG.
The hydraulic pump 23 and the hydraulic motor 24 are connected to each other by a high-pressure oil passage 37 and a low-pressure oil passage 38. The high-pressure oil passage 37 and the low-pressure oil passage 38 are provided with a common oil filter 39 and a trochoid pump 40. Further, oil is supplied to the mission case 1 which also serves as an oil tank by the oil supply hole 52 which communicates with the mission case 1, and oil is supplied to the mission case 1. Oil to oil passage 3
It is designed to be released when the internal pressure of 7, 38 exceeds a certain pressure.
【００２７】以上のように構成されるＨＳＴ２は、前記
右側分割ミッションケース７に着脱可能となるように、
前記基板２２を貫通して該分割ミッションケース７内ま
で延びるＨＳＴ入力軸Ｏ1′及び出力軸Ｏ2の突出部分
と、該突出部分の周辺に小組される諸部品等とで嵌着用
凹凸部とを形成している。The HST 2 constructed as described above is detachable from the right split mission case 7 as described above.
A protrusion and a protrusion of the HST input shaft O 1 ′ and the output shaft O 2 extending through the substrate 22 and into the split mission case 7, and various fitting parts and the like around the protrusion and fitting fitting irregularities. Is formed.
【００２８】即ち、先ずＨＳＴ入力軸Ｏ1′の突出して
いる先端部２０には、前記分割ミッションケース７内に
予め組み込まれた接続カラー１８にスプライン嵌合する
スプライン２０ａが形成され、該入力軸Ｏ1′の基板２
２近傍の根元部にはミッションケース側から供給される
オイルを濾過するフィルタ３９を張架する枠体４１が突
設され、該フィルタ張架用の枠体４１の周辺の基板２２
壁面にはシールＳ1が嵌着されている。前記接続カラー
１８は、長くなる程２つの入力軸Ｏ1，Ｏ1′のずれを吸
収し伝動効率を高め得る。That is, first, the protruding tip portion 20 of the HST input shaft O 1 'is formed with a spline 20a which is spline-fitted to the connecting collar 18 previously incorporated in the split mission case 7, and the input shaft is provided. Substrate 2 of O 1 ′
A frame body 41 around which a filter 39 for filtering the oil supplied from the transmission case side is stretched is provided at the base portion near 2 and the substrate 22 around the filter stretch frame 41 is provided.
A seal S 1 is fitted on the wall surface. The longer the connecting collar 18 is, the more it absorbs the deviation between the two input shafts O 1 and O 1 ′, and can improve the transmission efficiency.
【００２９】次に、ＨＳＴ出力軸Ｏ2の突出している部
分には、基板２２側の根元部から先端部に向けて順次、
カラー１５と、該カラー１５と外径の等しいベアリング
１６と、これらより外径の短かいギヤＧ11とが嵌着さ
れ、ボルト１７で止着されている。前記カラー１５とベ
アリング１６との合計した厚みｄ（軸方向長さ）は、台
座５０の肉厚に略等しい。前記カラー１５は根元部に縮
径突出部１５ａが形成されて基板２２の拡径貫通孔２２
ａにシールＳ2を介装して嵌入され、また該カラー１５
の外周溝１５ｂにシールＳ3を嵌着している。Next, in the projecting portion of the HST output shaft O 2 , from the base portion on the side of the substrate 22 toward the tip portion,
A collar 15, a bearing 16 having an outer diameter equal to that of the collar 15, and a gear G 11 having an outer diameter smaller than these are fitted and fixed by a bolt 17. The total thickness d (axial length) of the collar 15 and the bearing 16 is substantially equal to the thickness of the pedestal 50. The collar 15 has a reduced diameter protruding portion 15a formed at a base portion thereof, and has an enlarged diameter through hole 22 of the substrate 22.
a is inserted through a seal S 2 and the collar 15
A seal S 3 is fitted in the outer peripheral groove 15b.
【００３０】さらに、前記ＨＳＴ出力軸Ｏ2近傍の基板
２２にはオイル戻し穴２２ｂを設け、前記台座５０への
ＨＳＴ２の接続時のシール性を向上させるためシール筒
５９の嵌込用拡径部２２ｃを前記オイル戻し穴２２ｂに
設けている。２２ｄは基板２２を台座５０に締付ける取
付座で、該取付座２２ｄには締結ボルト４２を挿通する
穴２２ｅが開設されている。Further, an oil return hole 22b is provided in the base plate 22 near the HST output shaft O 2 so as to improve the sealing performance when the HST 2 is connected to the pedestal 50. 22c is provided in the oil return hole 22b. Reference numeral 22d is a mounting seat for fastening the substrate 22 to the pedestal 50, and the mounting seat 22d is provided with a hole 22e through which the fastening bolt 42 is inserted.
【００３１】以上のように構成されたＨＳＴ２は、前記
右側分割ミッションケース７の台座５０に着脱可能とな
るが、該台座５０の構造は、次の通りである。The HST 2 configured as described above can be attached to and detached from the pedestal 50 of the right divided mission case 7. The structure of the pedestal 50 is as follows.
【００３２】即ち、該台座５０は、前述したように、カ
ラー１５とベアリング１６の各幅を合計した厚みｄと略
同一の肉厚を有し、後述する種々の穴５２〜５５や凹部
５１が設けられている。つまり、該台座５０には、有底
凹部の底面５１ａにミッションケース側のオイルをＨＳ
Ｔ２内に供給するオイル供給穴５２とＨＳＴ入力軸
Ｏ1′の突出部２０を貫通させる入力軸貫通穴５３とが
夫々穿設されたオイルフィルタ嵌合凹部５１と、ＨＳＴ
出力軸Ｏ2を貫通する出力軸貫通穴５４とが穿設され、
さらに、ＨＳＴ２内のオイルをミッションケース側に戻
すオイル戻し穴５５が穿設され、さらにまた、ＨＳＴ２
を締付ける締結穴５６が穿設されている。That is, as described above, the pedestal 50 has a thickness substantially the same as the total thickness d of the collar 15 and the bearing 16 and has various holes 52 to 55 and recesses 51 described later. It is provided. That is, in the pedestal 50, the oil on the mission case side is HS
An oil filter fitting recess 51 in which an oil supply hole 52 for supplying into T2 and an input shaft through hole 53 for penetrating the protrusion 20 of the HST input shaft O 1 ′ are respectively formed, and an HST.
And an output shaft through hole 54 penetrating the output shaft O 2 ,
Further, an oil return hole 55 for returning the oil in the HST2 to the mission case side is formed, and further, the HST2
Is formed with a fastening hole 56.
【００３３】前記入力軸貫通穴５３の口径は、入力軸Ｏ
1′の口径と略同径であり、該貫通穴５３が開口するミ
ッションケース内側壁には、接続カラー１８の端面に当
接するワッシャ５７が同心で保持される凹部５８が形成
されている。前記接続カラー１８は、左右の分割ミッシ
ョンケース６，７を組付けたとき該カラー１８の一端が
ミッション入力軸Ｏ1の一端部１１ｂの接続用ロッド部
１１ｃと嵌合し、その他端が前記ワッシャ５７に当接し
た状態で該カラー１８の軸心と前記貫通孔５３の芯部と
が整合されている。また、前記ワッシャ５７によって前
記カラー１８端面及びミッションケース７内側壁面の摩
耗が防止される。該カラー１８の内面両側にはスプライ
ン１８ａが形成され、ミッション入力軸Ｏ1の接続用ロ
ッド部１１ｃ及びＨＳＴ入力軸Ｏ1′の先端部スプライ
ン２０ａとが夫々スプライン嵌合するようになってい
る。The diameter of the input shaft through hole 53 is equal to that of the input shaft O.
A diameter approximately the same diameter of 1 ', the transmission case in side wall through hole 53 is opened, the recess 58 abutting the washer 57 on the end surface of the connecting collar 18 is held concentrically are formed. When the left and right split mission cases 6 and 7 are assembled, one end of the connecting collar 18 is fitted to the connecting rod portion 11c of the one end portion 11b of the mission input shaft O 1 , and the other end thereof is the washer. The shaft center of the collar 18 and the core portion of the through hole 53 are aligned with each other while being in contact with 57. Further, the washer 57 prevents abrasion of the end surface of the collar 18 and the inner wall surface of the transmission case 7. The inner surface sides of the collar 18 splined 18a is formed, so as to tip the spline 20a Togaotto s spline engagement of the connecting rod portion 11c of the transmission input shaft O 1 and HST input shaft O 1 '.
【００３４】前記出力軸貫通穴５４は、その口径がＨＳ
Ｔ出力軸Ｏ2の突出端部に嵌合されたベアリング１６及
び遊嵌されたカラー１５の外径と略同径である。そし
て、該出力軸貫通穴５４の長さは、前述したベアリング
１６及びカラー１５の夫々の幅を合成した厚みｄに略等
しい。The diameter of the output shaft through hole 54 is HS.
The outer diameter of the T output shaft O bearing 16 is fitted to the protruding end of the 2 and loosely fitted to the collar 15 is substantially the same diameter. The length of the output shaft through hole 54 is substantially equal to the thickness d obtained by combining the widths of the bearing 16 and the collar 15 described above.
【００３５】前記オイル戻し穴５５には、ＨＳＴ２側の
オイル戻し穴２２ｂとの接続時のシール性を向上するた
めに前記シール筒５９の嵌込用拡径部５５ａが外側寄り
に形成されている。Ｓ4は該シール筒５９の両端部と前
記拡径部２２ｃ，５５ａの各端部とに夫々介装されるシ
ールである。In the oil return hole 55, a fitting expanded diameter portion 55a of the seal cylinder 59 is formed on the outer side in order to improve the sealing performance when connected to the oil return hole 22b on the HST2 side. . S 4 is a seal interposed between both end portions of the seal cylinder 59 and each end portion of the expanded diameter portions 22c and 55a.
【００３６】次に、上述のように構成されたミッション
ケースへのＨＳＴ２の着脱方法を説明する。Next, a method of attaching / detaching the HST 2 to / from the mission case constructed as described above will be described.
【００３７】先ず、ＨＳＴ２をミッションケース１に取
り着けるには、右側分割ミッションケース７のオイル戻
し穴５５又はＨＳＴ基板２２のオイル戻し穴２２ｂのい
ずれかの拡径部５５ａ，２２ｃにシール筒５９を嵌合し
た状態で、該ミッションケース７の台座５０の入力軸貫
通穴５３にＨＳＴ入力軸Ｏ1′の突出端２０を、該台座
５０の出力軸貫通穴５４にＨＳＴ出力軸Ｏ2の突出端を
平行して夫々挿入すると、前記突出端２０のスプライン
２０ａが接続カラー１８内のスプライン１８ａと嵌合し
て内部へ案内されると共に、前記軸Ｏ2のベアリング１
６及びカラー１５の外周面が順次出力軸貫通穴５４の内
周面を摺動して内部へ案内され、オイルフィルタ枠体４
１は台座５０の凹部５１へ嵌合し、前記シール筒５９の
両端は各拡径部５５ａ，２２ｃに嵌合し、台座５０の端
面と基板２２の端面とが当接する。そして、締結ボルト
４２を取付座２２ｄの穴２２ｅに挿入し台座５０側の締
結穴５６にねじ込むと、各当接面のシールＳ1〜Ｓ4によ
って、ＨＳＴ２はミッションケース１に密封状態に接合
連結される。この際、ギヤＧ11とギヤＧ6とが噛み合
う。First, in order to attach the HST 2 to the mission case 1, the seal cylinder 59 is attached to the enlarged diameter portion 55a, 22c of either the oil return hole 55 of the right divided mission case 7 or the oil return hole 22b of the HST board 22. In the fitted state, the protruding end 20 of the HST input shaft O 1 ′ is inserted into the input shaft through hole 53 of the pedestal 50 of the mission case 7, and the protruding end of the HST output shaft O 2 is inserted into the output shaft through hole 54 of the pedestal 50. When they are inserted in parallel with each other, the splines 20a of the projecting ends 20 are fitted into the splines 18a in the connecting collar 18 and guided therein, and the bearing 1 of the shaft O 2
6 and the outer peripheral surface of the collar 15 are sequentially slid on the inner peripheral surface of the output shaft through hole 54 and guided to the inside.
1 is fitted in the recess 51 of the pedestal 50, both ends of the seal cylinder 59 are fitted in the expanded diameter portions 55a, 22c, and the end face of the pedestal 50 and the end face of the substrate 22 come into contact with each other. When inserting the fastening bolt 42 into the hole 22e of the mounting seat 22d screwed into the fastening hole 56 of the base 50 side, the seal S 1 to S 4 of each contact surface, HST2 is joined sealingly connects to state the transmission case 1 To be done. At this time, the gear G 11 and the gear G 6 mesh with each other.
【００３８】次に、ＨＳＴ２をミッションケース１から
取り外すには、締結ボルト４２を緩めて取付座２２ｄの
穴２２ｅから引き抜き、ＨＳＴ２を外方へ水平に引っ張
ると、ＨＳＴ入力軸Ｏ1′はスプライン１８ａ，２０ａ
に沿って引き抜き方向にスライドし、ＨＳＴ出力軸Ｏ2
はカラー１５及びベアリング１６の外周が出力軸貫通孔
５４の内周面を引抜き方向の外方に摺動して取り出され
る。Next, To remove the HST2 from the transmission case 1, withdrawal from the hole 22e of the mounting seat 22d by loosening the fastening bolt 42, is pulled horizontally to HST2 outwardly, HST input shaft O 1 'is spline 18a , 20a
Slide in the pulling out direction along the HST output shaft O 2
The outer periphery of the collar 15 and the bearing 16 slides out on the inner peripheral surface of the output shaft through hole 54 outward in the drawing direction.
【００３９】なお、上述した実施例では、無段変速機と
してＨＳＴを採用したが、Ｖベルト式無段変速機やトル
クコンバータを応用した無段変速機を採用することもで
きる。Although the HST is adopted as the continuously variable transmission in the above-described embodiments, a V belt type continuously variable transmission or a continuously variable transmission to which a torque converter is applied may be adopted.
【００４０】そして、上述した実施例に係る無段変速機
付き動力伝達装置は、図４に示す耕うん機等の農用管理
作業機に採用される他、土木建築用作業機などに広く採
用される。The power transmission device with a continuously variable transmission according to the above-described embodiment is adopted not only in the agricultural management work machine such as the tiller shown in FIG. 4 but also in the civil engineering work machine and the like. .
【００４１】[0041]
【発明の効果】以上述べたように、請求項１の発明で
は、ミッションケース側面に少なくとも無段変速機の入
出力軸嵌入用穴を設け、これらの穴に前記無段変速機に
小組みした入出力軸部材を嵌合させると共に、無段変速
機の入出力軸先端上に動力伝達用連結部材を設け、出力
軸端部にギヤを嵌合させ、このギヤと無段変速機のケー
ス部との間に設けた軸受とシール部材とを前記出力軸上
に嵌合固定した前記無段変速機を前記ミッションケース
側面に外方から締結手段で着脱自在に取付けたので、ミ
ッションケースを分解することなく無段変速機のみを着
脱することができて、ミッションケース側及び無段変速
機側双方のメンテナンスを容易に行うことができる。ま
た、嵌合方式で着脱することからシール性の向上及び軸
の芯合わせの容易化を図ることもできる。さらに、出力
軸端部にギヤ、軸受、シール部材等を嵌合固定している
ことから出力軸まわりの強度の向上を図ることもでき
る。As described above, according to the invention of claim 1, at least the input / output shaft fitting holes of the continuously variable transmission are provided on the side surface of the transmission case, and these holes are sub-assembled to the continuously variable transmission. In addition to fitting the input / output shaft member, a power transmission connecting member is provided on the tip of the input / output shaft of the continuously variable transmission, and a gear is fitted at the end of the output shaft. Since the continuously variable transmission, in which the bearing and the seal member provided between and are fitted and fixed on the output shaft, is detachably attached to the side surface of the transmission case from the outside by fastening means, the transmission case is disassembled. Only the continuously variable transmission can be attached or detached without the need for maintenance on both the transmission case side and the continuously variable transmission side. In addition, since it is attached and detached by the fitting method, it is possible to improve the sealing property and facilitate the centering of the shaft. Further, since the gear, the bearing, the seal member and the like are fitted and fixed to the end portion of the output shaft, the strength around the output shaft can be improved.
【００４２】また、請求項２の発明では、ミッションケ
ースの一方側にミッション入力軸を、前記ミッションケ
ースの他方側に無段変速機の入出力軸を挿入し、前記ミ
ッション入力軸と無段変速機の入力軸とを前記ミッショ
ンケース内で連結し、前記ミッション入力軸は前記ミッ
ションケースの一方側ケース部分の少なくとも２個所で
支持し、前記無段変速機の入力軸は該無段変速機の外側
を囲むケース及びミッションケースの他方側ケース部分
に当接する基板とで支持したので、無段変速機の基板の
当接面は外表面に現れないから加工の必要がなく、従っ
て、基板無加工により製品コストを低廉化できる。According to the second aspect of the present invention, the mission input shaft is inserted into one side of the mission case, and the input / output shaft of the continuously variable transmission is inserted into the other side of the mission case. An input shaft of the transmission is connected within the mission case, the transmission input shaft is supported at at least two places on one side of the transmission case, and the input shaft of the continuously variable transmission is connected to the continuously variable transmission. Since it is supported by the case that surrounds the outside and the board that abuts on the other case of the transmission case, the contact surface of the continuously variable transmission board does not appear on the outer surface, so there is no need for processing. Therefore, the product cost can be reduced.
【００４３】さらに、請求項３の発明では、ミッション
入力軸及び無段変速機の入力軸を短く形成し、これら入
力軸を連結する接続カラーを長く形成したので、接続さ
れた双方の入力軸のずれが吸収され動力の伝達効率が高
まる。また、組み付け時の軸の芯出しが容易になる。Further, in the invention of claim 3, since the mission input shaft and the input shaft of the continuously variable transmission are formed to be short and the connecting collar connecting these input shafts is formed to be long, both of the connected input shafts are connected. The shift is absorbed and the power transmission efficiency is improved. Moreover, the centering of the shaft at the time of assembly becomes easy.
【００４４】請求項４の発明では、前記無段変速機を静
油圧無段変速機とし、この変速機のケースとミッション
ケースとの間に基板を設け、この基板に設けたオイル戻
し穴の端部にシール筒を嵌入固定し、このシール筒を基
板よりミッションケース側の穴部に向け突出させ、シー
ル筒の突出端部をこの穴部に挿入したので、ＨＳＴの油
洩れを簡単な構造のシール筒で対処でき、而もＨＳＴ側
にシール筒が付くため、ＨＳＴのミッションケースの着
脱時にシール筒を紛失することなく容易に着脱作業を行
うことができる。According to a fourth aspect of the present invention, the continuously variable transmission is a hydrostatic continuously variable transmission, a board is provided between the transmission case and the transmission case, and an end of an oil return hole provided in the board is provided. The seal cylinder is fitted and fixed to the portion, the seal cylinder is projected toward the hole on the mission case side from the substrate, and the protruding end of the seal cylinder is inserted into this hole, so that the oil leakage of the HST is simple. Since the seal cylinder can be used and the seal cylinder is attached to the HST side, the attachment / detachment work can be easily performed without losing the seal cylinder when the HST mission case is attached / detached.
【図１】本発明に係る無段変速機付き動力伝達装置の一
実施例のミッションケース内の構造を説明するための展
開断面図である。FIG. 1 is a developed sectional view for explaining a structure in a mission case of an embodiment of a power transmission device with a continuously variable transmission according to the present invention.
【図２】同実施例に係る無段変速機付き動力伝達装置の
ミッションケース内の要部を示す拡大断面図である。FIG. 2 is an enlarged cross-sectional view showing a main part in a mission case of the power transmission device with a continuously variable transmission according to the embodiment.
【図３】図２のミッションケース要部の分解断面図であ
る。FIG. 3 is an exploded cross-sectional view of a main part of the mission case of FIG.
【図４】上記無段変速機付き動力伝達装置を備えた農用
管理作業機の側面図である。FIG. 4 is a side view of an agricultural management work machine including the power transmission device with a continuously variable transmission.
【図５】従来の無段変速機付き動力伝達装置の図２相当
図である。FIG. 5 is a view corresponding to FIG. 2 of a conventional power transmission device with a continuously variable transmission.
１ ミッションケース ２ ＨＳＴ ６，７ 分割ミッションケース １２ ベアリング １３ 軸受用膨出筒 １８ 接続カラー ２２ 基板 ２５ ケース ４２ 締結ボルト ５０ 台座 ５１ 嵌合凹部 ５２，５３，５４，５５ 穴 Ｏ1 ミッション入力軸 Ｏ1′ ＨＳＴ入力軸 Ｏ2 ＨＳＴ出力軸1 mission case 2 HST 6,7 split mission case 12 bearing 13 bulging cylinder for bearing 18 connection collar 22 substrate 25 case 42 fastening bolt 50 pedestal 51 fitting recess 52, 53, 54, 55 hole O 1 mission input shaft O 1 ′ HST input shaft O 2 HST output shaft
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｆ１６Ｈ 57/02 Ｂ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI technical display area F16H 57/02 B
Claims (4)
変速機の入出力軸嵌入用穴を設け、これらの穴に前記無
段変速機に小組みした入出力軸部材を嵌合させると共
に、無段変速機の入出力軸先端上に動力伝達用連結部材
を設け、出力軸端部にギヤを嵌合させ、このギヤと無段
変速機のケース部との間に設けた軸受とシール部材とを
前記出力軸上に嵌合固定した前記無段変速機を前記ミッ
ションケース側面に外方から締結手段で着脱自在に取付
けたことを特徴とする無段変速機付き動力伝達装置。1. An input / output shaft fitting hole for at least a continuously variable transmission is provided on a side surface of a transmission case, and an input / output shaft member assembled in the continuously variable transmission is fitted into these holes, and at the same time, a continuously variable transmission is provided. A power transmission connecting member is provided on the tip of the input / output shaft of the machine, a gear is fitted to the end of the output shaft, and a bearing and a seal member provided between the gear and the case part of the continuously variable transmission are described above. A power transmission device with a continuously variable transmission, wherein the continuously variable transmission fitted and fixed on an output shaft is detachably attached to the side surface of the transmission case from the outside by fastening means.
入力軸を、前記ミッションケースの他方側に無段変速機
の入出力軸を挿入し、前記ミッション入力軸と無段変速
機の入力軸とを前記ミッションケース内で連結し、前記
ミッション入力軸は前記ミッションケースの一方側ケー
ス部分の少なくとも２個所で支持し、前記無段変速機の
入力軸は該無段変速機の外側を囲むケース及びミッショ
ンケースの他方側ケース部分に当接する基板とで支持し
たことを特徴とする請求項１記載の無段変速機付き動力
伝達装置。2. A transmission input shaft is inserted into one side of the transmission case, and an input / output shaft of a continuously variable transmission is inserted into the other side of the transmission case, and the transmission input shaft and the input shaft of the continuously variable transmission are connected to each other. A case and a mission case that are connected in a mission case, the mission input shaft is supported at at least two places on one side of the mission case, and the input shaft of the continuously variable transmission surrounds the outside of the continuously variable transmission. 2. The power transmission device with a continuously variable transmission according to claim 1, wherein the power transmission device is supported by a substrate that abuts on the other side case portion.
軸を短く形成し、これら入力軸を連結する接続カラーを
長く形成したことを特徴とする請求項２記載の無段変速
機付き動力伝達装置。3. The power transmission with a continuously variable transmission according to claim 2, wherein the mission input shaft and the input shaft of the continuously variable transmission are formed to be short, and a connection collar connecting these input shafts is formed to be long. apparatus.
し、この変速機のケースとミッションケースとの間に基
板を設け、この基板に設けたオイル戻し穴の端部にシー
ル筒を嵌入固定し、このシール筒を基板よりミッション
ケース側の穴部に向け突出させ、シール筒の突出端部を
この穴部に挿入したことを特徴とする請求項１〜３のい
ずれかに記載の無段変速機付き動力伝達装置。4. A hydrostatic stepless transmission is used as the continuously variable transmission, a board is provided between a case of the transmission and a transmission case, and a seal cylinder is provided at an end of an oil return hole provided at the board. The fitting and fixing is performed, the seal cylinder is projected toward the hole on the mission case side from the substrate, and the protruding end of the seal cylinder is inserted into the hole. Power transmission device with continuously variable transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3924294A JPH07223451A (en) | 1994-02-14 | 1994-02-14 | Power transmission having continuously variable transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3924294A JPH07223451A (en) | 1994-02-14 | 1994-02-14 | Power transmission having continuously variable transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07223451A true JPH07223451A (en) | 1995-08-22 |
Family
ID=12547668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3924294A Pending JPH07223451A (en) | 1994-02-14 | 1994-02-14 | Power transmission having continuously variable transmission |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07223451A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006207737A (en) * | 2005-01-28 | 2006-08-10 | Yanmar Co Ltd | Transmission of working vehicle |
| CN109404515A (en) * | 2018-12-22 | 2019-03-01 | 大可精密齿轮(浙江)有限公司 | A kind of reduction gearbox convenient for inputting shaft dismounting |
-
1994
- 1994-02-14 JP JP3924294A patent/JPH07223451A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006207737A (en) * | 2005-01-28 | 2006-08-10 | Yanmar Co Ltd | Transmission of working vehicle |
| JP4643284B2 (en) * | 2005-01-28 | 2011-03-02 | ヤンマー株式会社 | Work vehicle transmission |
| CN109404515A (en) * | 2018-12-22 | 2019-03-01 | 大可精密齿轮(浙江)有限公司 | A kind of reduction gearbox convenient for inputting shaft dismounting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A131 | Notification of reasons for refusal |
Effective date: 20040420 Free format text: JAPANESE INTERMEDIATE CODE: A131 |
|
| A02 | Decision of refusal |
Effective date: 20040817 Free format text: JAPANESE INTERMEDIATE CODE: A02 |