JPH0475262U

JPH0475262U -

Info

Publication number: JPH0475262U
Application number: JP11904590U
Authority: JP
Priority date: 1990-11-13
Filing date: 1990-11-13
Publication date: 1992-06-30
Anticipated expiration: 2005-06-28
Also published as: JPH0728442Y2

Description

[Brief explanation of the drawing]

第１図は本考案にかかるトルクコンバータ式の
前進２段後進２段の自動変速装置の構成を示すス
ケルトン図、第２図は本考案にかかる別の実施例
を示すトルクコンバータ式の前進２段後進２段の
自動変速装置の構成を示すスケルトン図、第３図
は本考案にかかる別の実施例を示す純メカニカル
式の前進２段後進２段の自動変速装置の構成を示
すスケルトン図、第４図は前進２段後進２段の各
変速段を形成する際の各クラツチおよびフリーホ
イールの作動状況を示す表図、第５図は第１図に
図示する変速装置の各クラツチを作動させるため
の油圧回路の構成を示す回路図、第６図は第１図
に図示する変速装置の変速パターンを示す線図、
第７図ａ，ｂ，ｃはデユーテイ制御状態を示すた
めの線図で、第７図ａは横軸に時間、縦軸に変速
信号をとつて表した線図、第７図ｂは横軸に時間
、縦軸に制御信号をとつて表した線図、第７図ｃ
は横軸に時間、縦軸に高速切換用クラツチに発生
する油圧力をとつて表した線図、第８図は第１図
に示す変速装置の低速段走行時のエンジンブレー
キ作動時前後の制御状態を、横軸に時間（時間的
経過）と走行状況をとり、縦軸に、各軸等の回転
数Ｎ_ｅ，Ｎ_１，Ｎ_２，ＮＧ_４と、アクセルのスロ
ツトルの状態（スロツトルのＯＮ−ＯＦＦ）と、
高速切換用のクラツチＣＨへの圧油の供給状態を
とつて表した作動状態を示す線図、第９図はフリ
ーホイールを入力軸側に配設した場合の本考案に
かかる別の実施例を示すトルクコンバータ式の前
進２段後進２段の自動変速装置の構成を示すスケ
ルトン図、第１０図、第１１図は従来例の前進２
段後進２段の自動変速装置にかかる変速装置の構
成を示すスケルトン図である。Ｓ_ｅ……エンジンの出力軸側、Ｓ_１……入力軸
、Ｓ_２……カウンタ軸、Ｓ_２′……第２のカウン
タ軸、Ｓ_３……出力軸、Ｇ_２，Ｇ_４……高速用の
歯車列、Ｇ_１，Ｇ_３……低速用の歯車列、ＣＨ…
…高速切換用のクラツチ、ＣＦ……前進用のクラ
ツチ、ＣＲ……後進用のクラツチ、Ｆ……フリー
ホイール。 Fig. 1 is a skeleton diagram showing the configuration of a torque converter type automatic transmission with two forward speeds and two reverse speeds according to the present invention, and Fig. 2 shows another embodiment of the torque converter type automatic transmission with two forward speeds according to the present invention. FIG. 3 is a skeleton diagram showing the configuration of an automatic transmission with two reverse speeds, and FIG. Figure 4 is a table showing the operation status of each clutch and freewheel when forming each gear stage of two forward and two reverse gears, and Figure 5 is a table showing the operation status of each clutch of the transmission shown in Figure 1. FIG. 6 is a diagram showing the shift pattern of the transmission shown in FIG. 1;
Figures 7a, b, and c are diagrams to show duty control states. Figure 7a is a diagram with time on the horizontal axis and shift signal on the vertical axis, and Figure 7b is on the horizontal axis. Diagram showing time on the axis and control signal on the vertical axis, Figure 7c
is a diagram with time on the horizontal axis and hydraulic pressure generated in the high-speed switching clutch on the vertical axis, and Figure 8 shows the control before and after engine braking is applied when the transmission shown in Figure 1 is running in a low gear. The horizontal axis shows time (time elapsed) and driving conditions, and the vertical axis shows the rotational speed of each axis N _e , N ₁ , N ₂ , NG ₄ , and the accelerator throttle state (throttle ON). -OFF) and
A diagram showing the operating state based on the supply state of pressure oil to the clutch CH for high-speed switching, and FIG. 9 shows another embodiment of the present invention in which the freewheel is disposed on the input shaft side. Figures 10 and 11 are skeleton diagrams showing the configuration of a torque converter type automatic transmission with two forward speeds and two reverse speeds.
FIG. 2 is a skeleton diagram showing the configuration of a transmission device of an automatic transmission device with two reverse speeds. S _e ...Engine output shaft side, _S1 ...Input shaft, S2 _... Counter shaft, S2 _' ...Second counter shaft, _S3 ...Output shaft, _G2 , _G4 ...High speed Gear train for G ₁ , G ₃ ...Gear train for low speed, CH...
...Clutch for high-speed switching, CF...Clutch for forward movement, CR...Clutch for reverse movement, F...Freewheel.

Claims

[Claim for Utility Model Registration] A high-speed gear train and a low-speed gear train, one of which is connected via a high-speed switching clutch CH, so as to selectively transmit power in a high-speed gear or a low-speed gear. , the other gear train is arranged between the input shaft and the counter shaft of the transmission via a freewheel F that transmits rotation only from the input shaft to the counter shaft side, and the forward drive and By separately providing at least two gear trains that transmit transmission through each clutch CF and CR for reverse, three clutches and one freewheel can provide two forward speeds and two reverse speeds.
A transmission for an industrial vehicle configured to be able to change gears, wherein a second counter shaft and an output shaft are disposed parallel to the input shaft and the counter shaft, with the counter shaft interposed therebetween; Between the counter shaft and the second counter shaft, and between the counter shaft and the output shaft, a forward gear train is connected via a forward clutch CF to either one, and a reverse gear train is connected to the other one through a forward clutch CF. Reverse gear trains are respectively disposed via the clutch CR, and gear trains are disposed fixedly on the respective shafts between the second counter shaft and the output shaft, and each of the clutches CH, The CF and CR are arranged so that they are located separately on any one of the input shaft, the counter shaft, the second counter shaft, and the output shaft, and in the same plane perpendicular to the longitudinal direction of the shaft of the transmission. A transmission for industrial vehicles characterized by the following: