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Jaw-type gearshift

A shifting mechanism and claw-type technology, which is applied in the field of switching claw-type shifting mechanisms, can solve problems such as traction interruption and noise

Active Publication Date: 2020-07-14
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Shifting transmissions with more than one gear for electrically driven motor vehicles or hybrid vehicles have the problem that tractive force interruptions can occur during the shifting process
But therefore, noise, so-called load bumps can appear in load changing situations
However, noise also occurs during gear changes due to axial bumps and tangential bumps during speed equalization

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0021] according to figure 1 A dog shifter for an at least two-stage shift transmission, in particular electrically driven motor vehicles, has a transmission shaft 2 and a sliding sleeve 3 arranged axially displaceable relative to the transmission shaft 2 . The sliding sleeve 3 surrounds the transmission shaft 2 at a coaxial distance, and in the distance between the transmission shaft 2 and the sliding sleeve 3 has an annular shifting carriage 4 , for example cylindrical. Shift sleeve form. The selector carriage 4 is arranged on the transmission shaft 2 in a rotationally fixed and axially displaceable manner by means of an internal toothing which engages in an external toothing of the transmission shaft 2 .

[0022] The shifting carriage 4 has on its circumference a carriage guide 6 which extends over a circumference angle α (α=eg 60°) and has an axial offset corresponding to the shift stroke S ( slope).

[0023] A radially inward projection 7 , for example a shifting finge...

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PUM

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Abstract

The invention relates to a jaw-type gearshift (1) for an at least two-stage gearbox, which is in particular electromotively driven, wherein there is a ring-shaped shifting gate (4) having a sliding block guide (6), which has axially protruding shifting claws and is in shifting contact by means of a shifting finger (7), which engages in the sliding block guide (6) and is arranged on the sliding sleeve (3). In a method for shifting the jaw-type gearshift, the shifting claws are coupled into corresponding receptacles of the gear wheels in that the shifting gate (4) is moved axially relative to the sliding sleeve (3) and the rise of the sliding block guide (6).

Description

technical field [0001] The invention relates to a claw shifting mechanism of a gearshift transmission for coupling an idler gear to a transmission shaft by means of a sliding sleeve arranged axially displaceable relative to the transmission shaft, and to a A method for switching a claw shift mechanism. Background technique [0002] Shifting transmissions with more than one gear for electrically driven motor vehicles or hybrid vehicles have the problem that tractive force interruptions can occur during the shifting process. In order to shorten the interruption of traction, jaw clutches can be used, which generally must have large recesses to accommodate the jaws, so that the jaws can engage unhindered. However, noise, so-called load bumps, can occur during load changes. However, noise also occurs during gear shifting due to axial impacts and tangential impacts during the equalization of speeds. Furthermore, a high force is also necessary for inserting the claws. [0003] ...

Claims

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Application Information

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IPC IPC(8): F16D11/10F16D11/14F16D21/04F16D23/02
CPCF16D11/10F16D21/04F16D23/02F16D2023/123F16D23/025F16D11/14F16D23/08F16H63/20
Inventor 托尼·泽伊斯
Owner SCHAEFFLER TECH AG & CO KG
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