Shifting device for a multiple gear gearbox with a locking device

A technology for shifting transmissions and shifting devices, which is applied in transmission device control, components with teeth, belts/chains/gears, etc., which can solve the problems of complex structure and high cost of shifting devices, and achieve simplified structure and low cost. cheap effect

Inactive Publication Date: 2010-12-15
GETRAG FORD TRANSMISSIONS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this would result in a complex construction of the shifting device, which would result in high costs

Method used

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  • Shifting device for a multiple gear gearbox with a locking device
  • Shifting device for a multiple gear gearbox with a locking device
  • Shifting device for a multiple gear gearbox with a locking device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] attached figure 1 Shown is a schematic view of the components of a shifting device according to the prior art. The first shift fork 10 , which is only partially depicted in the drawing, can be moved from the neutral position N in the direction of the arrows 11 , 12 .

[0028] In addition to the first selector fork 10 , a second selector fork 20 (only partly shown in the figure) is provided which is movable along arrows 21 , 22 parallel to the first selector fork 10 . In a multi-speed transmission where the shift device needs to be installed, these shift forks 10, 20 can each correspond to two gears. The multi-speed transmission is a subtransmission, in particular of a dual clutch transmission, in which an odd number of forward gears G1 , G3 , G5 and a reverse gear G_reverse are implemented. The second shift fork 20 is in the shift position in which the forward gear G1 is engaged. attached figure 1 The other gears shown in are not engaged at this time. The first shi...

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PUM

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Abstract

A gear shift mechanism comprising: a first movable gear shift fork and at least one second movable gear shift fork adapted to engage gears of the gear shift transmission and adapted to assume a neutral position as well as an engaged position where a gear allocated to a respective one of the first and second gear shift forks is engaged, a locking mechanism preventing that the gear shift forks can assume at the same time unintentionally an engaged position, the locking mechanism comprising at least one movable locking element assuming a locking position when the second gear shift fork is in an engaging position engaging a gear, wherein in said locking position of the locking element, a contact face of the locking element and a locking face of the first gear shift fork engage each other and therefore hold the first gear shift fork in a neutral position, wherein the contact face of the locking element and the locking face of the first gear shift fork are designed such that in a locking position a force for moving the first gear shift fork out of its neutral position does not generate a resulting component of force that would force the locking element against the second gear shift fork.

Description

technical field [0001] The invention relates to a shifting device for a multi-speed transmission, said shifting device comprising a movable first shift fork and at least one movable second shift fork for engaging a shifted transmission gear. Selector forks and a locking device, which prevents the selector forks from simultaneously occupying a shift position in each case and causing simultaneous unintentional engagement of two gears. Background technique [0002] EP0331278A2 discloses a shifting device for a multi-speed shift transmission, comprising a first shift fork and a second shift fork. Each shift fork includes shift fork shafts arranged parallel to each other. These shift forks can be moved in the longitudinal direction of the shift fork shaft. When a shift fork is in the neutral position, no gear is engaged that can be shifted with that shift fork. And when a certain shift fork is in a certain shift position, then the gear corresponding to the shift fork has been ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H63/36
CPCF16H63/36Y10T74/20104Y10T74/20128Y10T74/20116Y10T74/2011
Inventor M·德林A·黑格拉特P·泽恩根
Owner GETRAG FORD TRANSMISSIONS GMBH
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