Check patentability & draft patents in minutes with Patsnap Eureka AI!

Shift device, in particular for a change speed gearbox of a motor vehicle, comprising a gear shift rail

A technology of automobile transmission and shifting device, which is applied in the direction of transmission control, fluid pressure actuating device, and components with teeth, etc., which can solve the problem of high cost

Inactive Publication Date: 2009-08-26
SCHAEFFLER TECH AG & CO KG
View PDF1 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This design solution is very expensive and requires a large number of separate structural parts, namely the inner sleeve, a separate rolling bearing and the piston, wherein the piston, the end of the sliding rod and the inner sleeve must be specially designed so that all structural parts can be connected to each other. fixed

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Shift device, in particular for a change speed gearbox of a motor vehicle, comprising a gear shift rail

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] figure 1 A gearshift device 1 according to the invention is shown, comprising a gearshift rod 2 and a gearshift fork 3 connected thereto. The shift rod 2 is directly connected with its two elongated ends 4 to a piston 5 , which is guided in a cylinder 6 . The arrangement consisting of piston 5 and cylinder 6 is connected to a pressure medium line, not shown in detail, through which pressure medium can be introduced into the cylinder, which acts on the pressure surface 7 of the piston, so that the replacement The shift rod 2 moves axially, the piston 5 being guided in a stationary cylinder 6 . An axial shifting movement of the selector slide rod can thus be achieved. Resetting is effected by a corresponding actuation of the unit comprising piston 5 and cylinder 6 arranged at the other end of selector slide rod 2 .

[0020] As shown in FIG. 2 , the piston 5 is a substantially cylindrical structural part with a recess 8 into which the end 4 of the shift rod 2 engages di...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a shift device (1), in particular for a change speed gearbox of a motor vehicle, comprising a gear shift rail (2), both ends of which are coupled to a respective piston (5) that runs through a cylinder (6) and that can be charged hydraulically or pneumatically by means of a pressurised fluid. According to the invention, the gear shift rail (2) is mounted in the respective cylinder (6) by means of rolling bodies, said rolling bodies being arranged against the piston (5) and being pressed radially against the cylinder (6) by means of the pressurised fluid, when the piston is charged with said fluid.

Description

technical field [0001] The invention relates to a shifting device, in particular for a motor vehicle transmission, comprising a shifting slide rod, which is connected at both ends to a piston guided in a cylinder, which can be acted upon hydraulically or pneumatically by means of a pressure medium. connection, wherein the shift rod is supported in the corresponding cylinder via rolling elements. Background technique [0002] For example, in a stepped transmission of a motor vehicle, a shifting device of the aforementioned type is moved for shifting gears, which is designed, for example, as a shift fork. The selector fork is fastened to a selector slide, which is supported at both ends by roller bearings for simple displaceability. Here, a transmission is disclosed in which the shift slide is moved mechanically by means of a shift mechanism, for example a shift pin or the like. Transmissions with multiple gears require relatively high mechanical complexity, especially if th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/14F16H63/30F16C29/04
CPCF15B15/1447F16H2063/3079F15B15/1471F16H63/3023
Inventor 克劳斯·克雷默托马斯·梅利斯约亨·勒费尔曼
Owner SCHAEFFLER TECH AG & CO KG
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com