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Shifting apparatus with power assistance device

A technology for supporting devices and shifting devices, applied in the direction of elements with teeth, transmission control, belt/chain/gear, etc., which can solve the problems of long distance, heavy installation, and inaccessibility

Active Publication Date: 2013-07-24
ZF FRIEDRICHSHAFEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A directly proportional picture of manual shift force is not available here
The distance between the control part and the power part is very long and the installation takes up a lot of space

Method used

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  • Shifting apparatus with power assistance device
  • Shifting apparatus with power assistance device
  • Shifting apparatus with power assistance device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] figure 1 A shifting system 2 of a motor vehicle according to the prior art is shown in a simplified diagram. From the selector lever 4 , the selector lever 6 leads via a lever deflection 8 to a selector 11 with a pneumatic actuating support 10 . The pneumatic actuating support device 10 has a connecting line 12 which leads to a storage container 14 from which the pneumatic actuating support device 10 is supplied with compressed air. The lever steering 8 has a first lever 16 which is preferably connected in an articulated manner to the selector lever 6 . The rod deflection device 8 has a second lever 18 which in turn engages in a control rod 20 arranged in the pneumatic actuating support device 10 . Furthermore, a piston rod 22 , into which a lever 24 engages and which is connected via a rotatable shift shaft 26 to a lever 28 in a vehicle transmission 30 , is arranged in the pneumatic actuating support device 10 . The lever 28 engages in a shift rail 32 via which the ...

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PUM

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Abstract

The present invention relates to a shifting apparatus (11, 40) with power assistance device (10) for a transmission (30) of a vehicle, with a shift housing (44), with means for selecting and shifting of a gear of the transmission (30), with a transmission site for transmission of the manual shifting force to the power assistance device (10) and with means to change and / or to limit the manual shifting force acting on the power assistance device (10). The transmission site of the manual shifting force has a lever (18) which is connected to one element (20) of the power assistance device (10). According to the invention, the shifting apparatus (11, 40) has an apparatus for limiting of the power assistance force, which is arranged directly beside the transmission site for transmission of the manual shifting force to the power assistance device (10) and comprises a pin (42) arranged in the gearshift shaft (36), said pin engages in at least one groove (46) of a hollow shaft (38) surrounding the gearshift shaft (36).

Description

technical field [0001] The invention relates to a shifting device with servo support. Background technique [0002] Today's commercial vehicles, such as passenger cars and trucks, have space constraints for the installation of the transmission by virtue of their cabover design, in which the transmission is forced to be moved away from the driver's seat. The distance is particularly high in cars with low-mounted or rear-mounted engines. In mechanically shifted transmissions, it is very difficult to carry out precise gear changes via the very long, sometimes tensely running gearshift rods. [0003] Pneumatic shift assists are known in decentralized construction, which consist of a mechanical-pneumatic control element and a separate pneumatic assist element. Shift assists in a decentralized structure are known from Loomann; Zahnradgetriebe; 2. Auflage; Springer Verlag; 1988; S.225. The control is a mechanically operated control valve that is operated by the shift linkage. H...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/30
CPCF16H61/30F16H2061/301F16H2061/302
Inventor 迪特尔·菲舍尔克劳斯·斯帕斯
Owner ZF FRIEDRICHSHAFEN AG