JPS6165943A - Deceleration change-over device - Google Patents

Deceleration change-over device

Info

Publication number
JPS6165943A
JPS6165943A JP59187483A JP18748384A JPS6165943A JP S6165943 A JPS6165943 A JP S6165943A JP 59187483 A JP59187483 A JP 59187483A JP 18748384 A JP18748384 A JP 18748384A JP S6165943 A JPS6165943 A JP S6165943A
Authority
JP
Japan
Prior art keywords
gear
gears
output shaft
output
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
Application number
JP59187483A
Other languages
Japanese (ja)
Inventor
Tadao Nishihara
西原 忠男
Akiro Sawamura
沢村 彰朗
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
Original Assignee
Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Iseki and Co Ltd, Iseki Agricultural Machinery Mfg Co Ltd filed Critical Iseki and Co Ltd
Priority to JP59187483A priority Critical patent/JPS6165943A/en
Publication of JPS6165943A publication Critical patent/JPS6165943A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To provide a compact deceleration change-over device and shorten the distance between shafts by constituting input and output gears interlocked with each other through a plurality of gears. CONSTITUTION:An output shaft 10 is provided concentrically with an input shaft 8 and a carrier 21 is loosely fitted onto the output shaft 10. A plurality of gears 27, 28, etc. having reduction gear ratios different from each other are provided by the carrier 21. Also, are provided input and output gears 24, 25 meshing with gears 27, 28, etc. Further, are provided a frictional clutch section C for selectively coupling the carrier 21 with a boss portion 29 of the output shaft 10 or a transmission case 30 and a frictional plate brake section B operated by a spring pressure. By this constitution is provided a compact deceleration change-over device and shortened the distance between shafts.

Description

【発明の詳細な説明】 産業上の利用分野 この発明は、設定された成る回転速度と、これに対して
若干減速された減速回転速度の相互間の変速切替が迅速
、かつ、衝撃少なく円滑に行われるよう構成した減速切
替装置に関するもので、部品数が少なく、小型化された
減速切替装置を提案するものである。
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides for quick and smooth gear changeover between a set rotational speed and a slightly reduced rotational speed with less impact. The present invention relates to a deceleration switching device configured to perform this function, and proposes a downsized deceleration switching device with a small number of parts.

従来の技術 この種の減速切替装置として、特願昭55−14786
9号が知られているが、この装置では、入力軸の端部に
設けた大径の内歯ギヤによって出力軸と1体のキャリヤ
に軸支している遊星ギヤを鳴動し、遊星ギヤに噛合う太
陽ギヤ乞#屯させろか、或いは太陽ギヤをキャリヤに結
合するかによって出力軸の速度を切替えるものであり、
大径の内歯ギヤのためにこの減速切替装置の外形が犬ぎ
くなってしまううえ、この結果、上記装置に隣妾【7で
設けられる他の句と入力軸、出力軸との軸間距離が大き
くなって、これらを内装しているミッションケースが大
形となるなどの問題がある。
Prior Art This type of deceleration switching device is disclosed in Japanese Patent Application No. 55-14786.
No. 9 is known, but in this device, a large-diameter internal gear installed at the end of the input shaft makes a planetary gear, which is pivotally supported on a carrier that is integrated with the output shaft, ring, and the planetary gear The speed of the output shaft is changed depending on whether the meshing sun gear is engaged or the sun gear is coupled to the carrier.
Due to the large-diameter internal gear, the external shape of this reduction switching device becomes awkward, and as a result, the distance between the input shaft and the output shaft is There are problems such as the large size of the transmission case that houses them.

発明が解決しようとする問題点 この発明は、大形となり易い従来の装置を・11形とす
ることができるように減速の機構を工夫したものである
Problems to be Solved by the Invention This invention devises a deceleration mechanism so that the conventional device, which tends to be large, can be made into an 11-type device.

間跨点を解決するための手段 上記問題点を解決するためにこの発明は次の技術的手段
を講じた。
Means for solving the straddling point In order to solve the above problems, the present invention has taken the following technical means.

即ち、入力仲(8)とこれと同心に設けられた出力@0
υと、出力軸0■に遊嵌されたキャリヤQυと、キャリ
ヤθ1:へこれと同心円上に配設、軸支されて互vc1
体1c設けられ、かつ、減速比が互に異なるよ51C形
成された複数のギヤ(昂、Qか・・と、これらのギヤ彌
、翰・・・の入力側のものvC噛合5よう入力軸(8)
に設けた入力ギャQ力と、上記ギヤn、n−°°の出力
側のものに噛合うよう出力軸(1(lに設けた出力ギヤ
f25)と、キャリヤQυを、出力軸α+)C設けてい
るボス部のに、又はミッションケース(:dに択一にP
合できるようにした油圧作動式の摩擦板クラッチ部(q
と、ばね圧作動による摩擦板ブレーキ部(B)とを備え
ている減速切替装置である。
In other words, the input center (8) and the output @0 provided concentrically with this
υ, the carrier Qυ loosely fitted to the output shaft 0■, and the carrier θ1: are arranged on a concentric circle with these and are pivotally supported, and mutually vc1.
A plurality of gears (Ko, Q, etc.) are provided with a body 1c, and the gears are formed so that the reduction ratios are different from each other. (8)
The input gear Q force provided at In the boss part provided, or in the mission case (:d)
A hydraulically operated friction plate clutch (q
This is a deceleration switching device equipped with a friction plate brake part (B) operated by spring pressure.

実@例と作用 次にこの発明の一実施例を図て基づいて説明する。Actual @ example and effect Next, one embodiment of the present invention will be described with reference to the drawings.

第2図1にその一実狗例1を適用したトラクタのミッシ
ョン慢構乞ギヤ線図にて示したが、エンジン(1)の回
%xを主クラッチ(2)によってクラッチ出力軸(3)
に云達し、クラッチ出力114h(3)の回転を、クラ
ッチ出力・+4[3)のギヤ14)に連動イる主変速カ
ウンタギヤ群(5)及び、これに、構台5″E変車ギヤ
群16)からなる主変速機構(7)Kよって変速して人
力@(8)に伝え、入力軸(8)の動力を欠述の?戊速
切替袈す野(9)によって出力軸11〔へ変速して伝達
し、出力俳(1〔の回転を、出力軸aωのギヤ旧)に連
動する副変速カウンタギヤ群02+及び、これに噛合う
副変速ギヤ群(13とからなる剃f4!機構0(イ)及
び、後進ギヤ119の後搗磯構Q61とによってドライ
ブピニオン軸171を夫々駆動し、ドライブピニオン軸
面憂゛よ後屯輪デフ慢溝1181′ft介して後車輪1
191!Iを駆動するものである。
Fig. 2 shows a transmission gear diagram of a tractor to which Example 1 is applied.
, the rotation of the clutch output 114h (3) is linked to the clutch output +4 [3] gear 14), the main shift counter gear group (5), and the gantry 5''E shift gear group. The main transmission mechanism (7) K consisting of 16) changes the speed and transmits it to the human power @ (8), and the power of the input shaft (8) is transferred to the output shaft 11 by the not-mentioned ? A mechanism consisting of an auxiliary transmission counter gear group 02+ that changes and transmits the speed and is linked to the output shaft (the rotation of 1 is the gear of the output shaft aω), and an auxiliary transmission gear group (13) that meshes with the auxiliary transmission counter gear group 02+. 0 (A) and the rear gear Q61 of the reverse gear 119 drive the drive pinion shaft 171, respectively, and the drive pinion shaft surface drives the rear wheel 1 through the rear wheel differential groove 1181'ft.
191! It drives I.

濾速切#装置(9)は、出力@(+01に・ガ嵌した節
状枠■にキャリヤr21)をボルトの、 +2’J・・
・にて固定し、出力軸QGを中心とする同心円上に一〇
キャリヤl?11に複数のギヤビン231を配設、固定
し、入力軸(8)の後部に入力ギヤ(24!を、出力軸
0Iの@部1cは入力ギヤ129゛よりも大径の出力ギ
ヤqりを夫々設け、互に1体に形成されてペアリングリ
(イ)を介して夫々のギヤビヤQ9に夫々噛合うように
形成し、筒状枠■の前方にて出力軸(11mにボス部C
βを固設し、節状枠1地の後方にてミッションケース鴫
に軸受体らυをボルトova。
The filtration speed cutting device (9) is the output @ (carrier r21 in the knotted frame ■ fitted to +01) of the bolt, +2'J...
・Fix at , and place 10 carriers on a concentric circle centered on the output shaft QG. 11, a plurality of gear bins 231 are arranged and fixed, an input gear (24! is attached to the rear part of the input shaft (8), and an output gear (24!) is attached to the rear part of the output shaft (8), and an output gear (q) having a larger diameter than the input gear 129゛ is attached to the @ part 1c of the output shaft 0I. The output shaft (11m has a boss part C) in front of the cylindrical frame
Fix β and bolt the bearing body υ to the mission case at the rear of the joint frame 1.

C3a・・・にて取付け、筒状枠嶽をボス部□□□に結
合した状態に、又は非結合の状態に切替えできるように
した油圧作動式の摩擦板クラッチ部(Q及び、筒状枠(
寵を軸受体131)に結合した状態に、又は非結合の状
態に切替えできるばね圧作動式の摩擦板ブレーキ部(+
31を夫々設けている。即ち、例示した摩擦板クラッチ
部(Qは、ボス部+23の外周部に形成した歯状溝にリ
ング状のブレラシャプレーh ii 、 關・・・の内
孔に形成した歯状溝を係合し、筒状枠12Gの前部の外
周部に形成した歯状溝に、リング状のセパレータプレー
[4)、0列・・・の歯状溝を係合してプレツ7ヤプレ
ート割(2)の間にセパレータプレー)C34)ヲ介在
せしめ、筒状枠■の前部に形成しているシリンダ室(ト
)に嵌合したクラッチピストン国を矢MA方向に油圧に
て8@したとぎ、プレッシャプレート(至)とセパレー
タブレートC(41が互(合接してこれによって筒状枠
(氾がボス部器に結合する状態となり、シリンダ室田内
の圧力油を外へ排出したときは、次述の摩擦板ブレーキ
部(+3のばねOnの反矢線A方回の復元力によって、
プレートμ5c3Jとこれを連結している連結ピン(4
υがクラッチピストン印ヲ反矢6aA方回に移動するこ
とになって、プレッシャプレート(至)とセパレータプ
レートrAは互に離れて筒状枠←りがボス部C2’3v
c非結合状態となるように調成され、又、摩擦板ブレー
キ部+B)は、軸受体C311のボス部の外周部の歯状
溝にプレッシャプレート(41)の歯状溝を係合し、筒
状枠C2αの後部の歯状溝にセパレータプレー)+42
1の歯状溝を係合して、プレー191を、ばね口によっ
て反矢線A方向に押動するように附勢しているので、シ
リンダ室田に圧力油が供給されブよい状態でばばねC3
7+によってプレートGlがフ゛レツシャフ゛レート1
月)とセパレータブレート1421を合接して筒状枠■
が軸受体θυに結合する状態となり、シ11ンダ室(ト
)に圧力油を供給した状態ではばねG71の弾力が、役
されるので、プレッシャプレート44+>がセパレータ
プレート+41)から離幻て筒状枠頓が軸受体1311
に非結合状態となるように構成されている。
A hydraulically actuated friction plate clutch (Q and cylindrical frame (
A spring pressure-operated friction plate brake part (+
31 are provided respectively. That is, the exemplified friction plate clutch part (Q is a ring-shaped brake clutch h ii that engages the tooth-like groove formed in the outer circumferential part of the boss part +23 with the tooth-like groove formed in the inner hole of the ring-shaped brake clutch h ii , etc.). , the ring-shaped separator plate [4] and the toothed grooves of row 0 are engaged with the toothed grooves formed on the outer periphery of the front part of the cylindrical frame 12G, and the preset plate part (2) is After the clutch piston fitted in the cylinder chamber (G) formed at the front of the cylindrical frame (■) is hydraulically moved in the direction of arrow MA with a separator plate (C34) interposed between them, the pressure plate (to) and separator plate C (41) are connected to each other, and this causes the cylindrical frame (flood) to be connected to the boss part, and when the pressure oil in the cylinder chamber is discharged to the outside, the following friction Due to the restoring force of the plate brake part (+3 spring ON in the direction of arrow A),
Connecting pin (4) connecting plate μ5c3J and this
As υ moves in the opposite direction of the clutch piston mark 6aA, the pressure plate (to) and separator plate rA are separated from each other, and the cylindrical frame ← is located at the boss portion C2'3v.
(c) is adjusted to be in a non-coupled state, and the friction plate brake part +B) engages the toothed groove of the pressure plate (41) with the toothed groove on the outer periphery of the boss part of the bearing body C311, Separator plate in the toothed groove at the rear of the cylindrical frame C2α) +42
Since the play 191 is urged by the spring port so as to be pushed in the direction opposite to the arrow A, pressure oil is supplied to the cylinder Murota and the spring is in a good condition. C3
Plate Gl becomes plate shaft rate 1 due to 7+
month) and separator plate 1421 are joined together to create a cylindrical frame■
is connected to the bearing body θυ, and the elasticity of the spring G71 is used when pressure oil is supplied to the cylinder chamber (G), so that the pressure plate 44+> separates from the separator plate +41) and the cylinder Bearing body 1311
It is configured so that it is in a non-coupled state.

従って、節状枠tηをボス部内に結合したとき−まキャ
リヤCI)、出力ギヤへ、出方→伯Q ]、+が共に1
体となるため、入力@(8)、入カギャQ但大径のギヤ
(21、小径のギヤ弼、出力ギヤ(雇、出方@α0)が
1体となって入力@f8) K出力軸aωが直結される
ことになり、筒状枠f?lをボス部器に非結合状態とし
たときは、節状枠■は・油受体3υに結合されるので、
キャリヤQ11が静止(−1入力@(8)の回転は、入
力ギヤな・0とギヤ開の噛合い及びギヤ12FI:Iと
出方ギヤ四の噛合いによって少し減速されて出力It(
10+に伝えられることになるものである。
Therefore, when the joint frame tη is connected to the boss part, the output gear is output from the carrier CI), and + is both 1.
Since it becomes a body, the input @ (8), the input gear Q, however, the large diameter gear (21, the small diameter gear 2, and the output gear (output @ α0) are combined into one input @ f8) K output shaft aω will be directly connected, and the cylindrical frame f? When l is not connected to the boss, the joint frame ■ is connected to the oil receiver 3υ, so
Carrier Q11 is stationary (-1 input @ (8) rotation is slightly decelerated by the meshing of input gear 0 and gear open and the meshing of gear 12FI:I and output gear 4, and the output It (
This is what will be conveyed to the 10+.

シリンダ型盤に圧力油を供給するため、クラッチ切替弁
(43の電磁ソレノイド(43a)を、切替スイッチ(
伯の投入操作に基づいて通電し、油ポンプq51の圧力
油を、油管(へ0、軸受体3υの油路(31a入出方軸
([の油路(10a)、筒状枠fallの油路(乃)を
介してシリンダ室6つに連通形成している。
In order to supply pressure oil to the cylinder die platen, the electromagnetic solenoid (43a) of the clutch changeover valve (43) is connected to the changeover switch (
Power is applied based on the input operation, and the pressure oil of the oil pump q51 is supplied to the oil pipe (0), the oil passage (31a) of the bearing body 3υ (31a), the oil passage (10a) of the oil passage (10a), the oil passage of the cylindrical frame fall. It communicates with six cylinder chambers via ().

ギヤビン(乃には、第3図に第1mの[〕−D線矢視を
示したように、後側端部[廻り止め用の切欠部(23a
)fX:設け、節状枠11の歯状碑(刀a)Icその歯
状溝(34a)を係合しているセパレータプレートC3
41の最前位(第1図の最左勾)のものの内孔(3/I
b)が係合するようく形成して、ギヤビンのを、筒状枠
殖勇及びこれと1体のキャリヤ(21)へ廻り止めして
、特別な廻り止めを不要にしてコストの低廉化を図って
いる。又、複数のギヤビンの及びこれに軸支しているギ
ヤ(2)、ギヤI281は、キャリヤ1211へ互に等
間隔に配設しているので、ギヤ1■とギヤ(至)は互に
異なるモジュールを使用したほうが製作上、便利であッ
テ、モジュールを変更することによってギヤ(2)。
The gear bin (no) has a rear end [notch for preventing rotation (23a
) fX: Separator plate C3 provided and engaged with the tooth-like groove (34a) of the tooth-like monument (sword a) Ic of the joint frame 11
The inner hole (3/I
b) is formed so as to engage with each other to prevent rotation of the gear bin to the cylindrical frame support and the carrier (21) which is integrated therewith, thereby eliminating the need for a special rotation stopper and reducing costs. I'm trying. Also, since the gears (2) and gear I281 of the plurality of gear bins and the gears (2) and (1281) that are pivotally supported by the gear bins are disposed on the carrier 1211 at equal intervals, the gear (1) and the gear (to) are different from each other. It is more convenient to use a module in terms of production, and by changing the module, you can create a gear (2).

弼は例えば等径のままとし、種々の減速比が得ろ椿17 れること舌なるのである。For example, by leaving the diameter of the same diameter, various reduction ratios can be obtained.Tsubaki 17 To be heard is to be tongued.

図示例では、ギヤ1271□□□が2個の場合について
説明したが、このギヤを3個以上として久方側、出力側
のほかのギヤに噛合うカウンタギヤを出力軸110へ適
宜−1!転させることによって、ギヤによる減速比を自
在に変更できるものである。又、第2図において符号r
旬はPTOクラッチであり、PTO変速機構149によ
ってFT’O軸(4!1を駆動している。
In the illustrated example, the case where there are two gears 1271□□□ has been explained, but if the number of these gears is three or more, the counter gear that meshes with other gears on the long side and output side is moved to the output shaft 110 by -1! By rotating the gear, the reduction ratio by the gear can be changed freely. Also, in Fig. 2, the symbol r
The key is the PTO clutch, and the FT'O shaft (4!1) is driven by the PTO transmission mechanism 149.

発明の効果 この発明は上述のように構成したものであって、入カギ
ャ勿及び出力ギヤ(29を複数のギヤIi 、 I28
1・・・によって連動構成したので、前述した従来装置
の如(、キャリヤに軸支した遊星ギヤを外周から囲むよ
うにして、これらの遊星ギヤに内歯ギヤを噛合せている
構造における大径の内歯ギヤてよって装置が大形化する
と云う問題をこの発明では、内歯ギヤの不使用によって
解決でさたものであって、減速切替装置(9)ヲ小形化
できるうえ、入力軸(8)、出力軸(101と、これら
に対して並列軸支される軸との仲間距離を小さくでき、
ミッション機溝を小形化できたのである。
Effects of the Invention The present invention is constructed as described above, and includes an input gear and an output gear (29 is connected to a plurality of gears Ii, I28
1. Since the interlocking structure is made by This invention solves the problem of the device becoming bulky due to toothed gears by not using internal gears.The reduction switching device (9) can be made smaller, and the input shaft (8) can be made smaller. , the distance between the output shaft (101 and the shaft supported in parallel to these) can be reduced,
This made it possible to downsize the mission groove.

又、ばね圧作動式による摩擦板ブレーキ部刊を用いたの
で、バッテリ電源が消費されてしまった場合におけろエ
ンジンの押しかけ始動や駐屯ブレーキの補助としての自
然転勤時のエンジンブレーキが’of能となり、油圧係
統の故障発生時にも走行が可能であり、しかも、油圧作
動式の摩擦板クラッチ部(0はI IIMで足りるので
、摩擦板ブレーキ部として油圧作動式を用いた従来の装
置に比べて、油圧関係部品が少なくなってコストの低廉
化にも荷動となっている。
In addition, since we use a spring-pressure-operated friction plate brake, the engine brake can be turned off even when the battery power is consumed, such as when the engine is forced to start or when the engine is automatically transferred as a supplement to the parking brake. Therefore, it is possible to run even in the event of a failure of the hydraulic system, and since a hydraulically operated friction plate clutch (IIM is sufficient for 0), compared to conventional devices that use hydraulically operated friction plate brakes. As a result, there are fewer hydraulic-related parts and the cost is lower.

【図面の簡単な説明】[Brief explanation of the drawing]

図はこの発明の一実施例を示し、編1図はミック3フ機
才、τマの要部縦j所側面図、第2閣はミッション機溝
のギヤ線図、第3図は第1図のD−D矢視図である。 符号説明 (8)・・・入力軸      flO)・・・出力軸
(21)・・・キャリヤ     (21)・・・入力
ギヤC8−・・出力ギヤ     i2’?’1121
’li・・・ギヤC291・・・ボス部      ζ
1・・・ミッションケース+8+・・−摩擦板ブレーキ
部 (q・・・亭捧板クラッチ部
The figures show one embodiment of the present invention. Figure 1 is a vertical side view of the main parts of Mick 3F and τ, Figure 2 is a gear diagram of the transmission groove, and Figure 3 is the gear diagram of the transmission groove. It is a DD arrow view of a figure. Description of symbols (8)...Input shaft flO)...Output shaft (21)...Carrier (21)...Input gear C8-...Output gear i2'? '1121
'li...Gear C291...Boss part ζ
1...Mission case +8+...-Friction plate brake part (q...Tei plate clutch part

Claims (1)

【特許請求の範囲】[Claims] 入力軸とこれと同心に設けられた出力軸と、出力軸に遊
嵌されたキャリヤと、キャリヤへこれと同心円上に配設
、軸支されて互に1体に設けられ、かつ、減速比が互に
異なるように形成された複数のギヤと、これらのギヤの
入力側のものに噛合うよう入力軸に設けた入力ギヤと、
上記ギヤの出力側のものに噛合うよう出力軸に設けた出
力ギヤと、キャリヤを、出力軸に設けているボス部に、
又はミッションケースに択一に結合できるようにした油
圧作動式の摩擦板クラッチ部と、ばね圧作動による摩擦
板ブレーキ部とを有していることを特徴とする減速切替
装置。
An input shaft, an output shaft provided concentrically therewith, a carrier loosely fitted to the output shaft, arranged concentrically with the carrier, pivotally supported, and provided as one unit, and each having a reduction ratio. a plurality of gears formed such that they are different from each other; an input gear provided on an input shaft so as to mesh with the input side of these gears;
An output gear provided on the output shaft so as to mesh with the output side of the gear and a carrier provided on the boss portion provided on the output shaft,
Alternatively, a deceleration switching device characterized by having a hydraulically operated friction plate clutch unit which can be selectively coupled to a transmission case, and a friction plate brake unit operated by a spring pressure.
JP59187483A 1984-09-07 1984-09-07 Deceleration change-over device Pending JPS6165943A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59187483A JPS6165943A (en) 1984-09-07 1984-09-07 Deceleration change-over device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59187483A JPS6165943A (en) 1984-09-07 1984-09-07 Deceleration change-over device

Publications (1)

Publication Number Publication Date
JPS6165943A true JPS6165943A (en) 1986-04-04

Family

ID=16206858

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59187483A Pending JPS6165943A (en) 1984-09-07 1984-09-07 Deceleration change-over device

Country Status (1)

Country Link
JP (1) JPS6165943A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002534649A (en) * 1998-12-31 2002-10-15 ハ,タエ−ファン Power transmission device using multi-stage overdrive
CN104534037A (en) * 2014-12-26 2015-04-22 北京航空航天大学 Two-gear automatic transmission for pure electric vehicle

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5694052A (en) * 1979-12-26 1981-07-30 Chuo Sanki Sekkei:Kk Speed change mechanism for motor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5694052A (en) * 1979-12-26 1981-07-30 Chuo Sanki Sekkei:Kk Speed change mechanism for motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002534649A (en) * 1998-12-31 2002-10-15 ハ,タエ−ファン Power transmission device using multi-stage overdrive
CN104534037A (en) * 2014-12-26 2015-04-22 北京航空航天大学 Two-gear automatic transmission for pure electric vehicle

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