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Shift control mechanism

A shift control and shift arm technology, applied in transmission control, mechanical equipment, components with teeth, etc., can solve problems such as unreliability, labor-intensive adjustment work, etc., and achieve the effect of preventing gear skipping

Inactive Publication Date: 2009-11-11
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this solution is that it is unreliable and sensitive to errors, and usually requires labor-intensive adjustment work during production

Method used

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Examples

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Embodiment Construction

[0083] exist figure 1 , reference numeral 1 designates a synchronizer bush or a synchronizer ring, which is rotationally locked to a shaft (not shown) of the motor vehicle by means of a synchronizer hub. On either side of the hub, gears are rotatably mounted on this shaft, each gear has a snap ring, which faces the synchronizer bushing 1, and if the synchronizer bushing 1 is displaced towards and engages with the snap ring, the snap ring Locking engagement with this shaft is possible. Since all these components and other components of conventional synchronizers are known to those skilled in the art, they need not be described in more detail and are not shown in the figures.

[0084] The synchronizer bushing 1 rotates together with the shaft about an axis parallel to the plane of the drawing.

[0085] A rod 2 or any other suitable type of guide rail extends parallel to the axis of rotation of the gearbox and movably supports the carriage 3 . The carrier comprises a fork 4 en...

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Abstract

An internal shift control mechanism for a motor vehicle gearbox comprises - a fork member (4) for engaging and displacing a synchronizer sleeve (1) of the gearbox in an axial direction between a neutral position and at least one active position; - a carriage (3) supporting the fork member (4), displaceably guided in the axial direction; - a shifter axle (9) having an axis of rotation which extends transversally with respect to the displacement direction of the carriage and carrying a shift arm (10) which engages a shift gate (6; 29) formed on said carriage (3). In the active position a tangent at a contact point between the shift arm (10) and the shift gate (6; 29) is perpendicular to a radius extending from the axis to the contact point.

Description

technical field [0001] The present invention relates to an internal shift control mechanism for a motor vehicle gearbox. Background technique [0002] Conventional shift controls include a shift lever placed in the passenger compartment of the motor vehicle and operated by the driver, the shift lever being coupled to a shift shaft within the transmission for rotating and axially displacing the shift shaft. The shift shaft carries a plurality of shift arms, one of which is engaged with a shift gate formed on a displaceable bracket by axial displacement of the shift shaft, and the shift arm displaces the bracket by rotation. The carrier in turn includes a yoke member that engages a synchronizer bushing on the transmission rotating shaft. [0003] An imbalance in the rotating shaft and thus the gears it carries causes the shaft to vibrate. When a gear is engaged, the shift arm of the internal shift control mechanism slightly preloads the yoke member against the synchronizer b...

Claims

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Application Information

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IPC IPC(8): F16H63/30
CPCF16H63/3016F16H2063/3083Y10T74/20177
Inventor 弗雷德里克·英格伦米凯尔·莫林本特·西伦
Owner GM GLOBAL TECH OPERATIONS LLC
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