Automatic manual speed changer and speed change control mechanism thereof

Abstract

The invention relates to an automatic manual speed changer and a speed change control mechanism thereof. The speed change control mechanism of the automatic manual speed changer comprises N gear shift fork components, a rotation drum which can rotate around the longitudinal axis and is provided with an endless annular groove around the peripheral face of the rotation drum, and gear shift deflector rods with first ends and second ends, wherein the number N of the gear shift fork components is larger than or equal to 2, the groove comprises N segments constant in height, which are different in constant radial height, and segments gradually varied in height, which are spliced with the adjacent segments constant in height, at least a part of the segments constant in height are in S shape and all the segments gradually varied in height are in collinear straight line shape and vertical to the longitudinal axis of the rotation drum when looked at from an expanded view of the peripheral face of the rotation drum, the first ends of the gear shift deflector rods are sequentially connected with the N segments constant in height in sliding mode, the gear shift deflector rods pivot so as to connect the second ends of the gear shift deflector rods with the N gear shift fork components in sequence, the first ends of the gear shift deflector rods are joined with the S-shaped portions of all the segments constant in height so as to enable the gear shift deflector rods to swing back and forth and enable the second ends of the gear shift deflector rods to drive the conterminal gear shift fork components to move back and forth once, and accordingly the automatic manual speed changer is enabled to sequentially achieve at most 2N gears for transmitting machinery force.

Description

technical field [0001] The invention generally relates to the field of transmissions of vehicles, in particular automatic manual transmissions (automatic mechanical transmissions, AMT). More particularly, the present invention relates to a shift operating mechanism for an automated manual transmission. Background technique [0002] The automatic manual transmission is an electronically controlled automatic shift transmission improved on the basis of the traditional gear-type manual transmission. The advantages of low cost, simple structure, reliable operation, and easy manufacture make it more cost-effective, and it is widely used in the field of vehicle transmissions. [0003] Figure 1A and 1B A typical conventional manual transmission is shown, which is a five-speed transmission with five forward gears 1-5 and one reverse R, including a manual shift lever 11 and a transmission housing 12 in which the There is a speed change transmission mechanism 13 and a speed change ...

AI Technical Summary

Problems solved by technology

However, the shifting mechanism in this design needs two actuators to respectively realize the above-mentioned "gear selection" and "shift" operations of the shift lever, and the structure is relatively complicated

In addition, the dual operations of "gear selection" and "shifting" need to be coordinated with each other, which also leads to the disadvantage of slow shifting speed

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