Gear engagement device and gear shifting device and transmission

Abstract

The invention discloses a gear engagement device. The gear engagement device comprises a driving engagement gear, and a driven engagement gear slidingly engaged with the driving engagement gear; the driving engagement gear comprises a main common tooth and at least one main lengthening tooth; the main lengthening tooth is longer than the main common tooth; the driven engagement gear comprises a slave common tooth and at least one slave lengthening tooth; the slave lengthening tooth is longer than the slave common tooth; a slave lengthening groove for engaging with the slave lengthening tooth is formed in one side of the main lengthening tooth; and a main lengthening groove for engaging with the main lengthening tooth is formed in one side of the slave lengthening tooth. The gear engagementdevice realizes forced corner positioning of the driving engagement gear and the driven engagement gear through the side surface bonding contact between the main lengthening tooth and the slave lengthening tooth, so that the requirements on the motor control precision are reduced, and the control cost can be saved. The invention further discloses a gear shifting device comprising the gear engagement device, and a transmission comprising the gear shifting device.

Description

technical field [0001] The invention relates to the technical field of speed change equipment, and more specifically, relates to a gear type meshing device. In addition, the present invention also relates to a shifting device including the above-mentioned gear-type meshing device and a transmission including the above-mentioned shifting device. Background technique [0002] With the development of automobile technology, in order to adapt to different working conditions of vehicles on the road, shifting devices are widely used. [0003] In the prior art, the transmission of an electric vehicle usually uses an engaging sleeve as a shifting element. However, the shifting impact of the gear shifting of the meshing sleeve is relatively large. In order to reduce the shifting impact, it is necessary to improve the control accuracy of the motor so that the driving meshing gear and the driven meshing gear are completely aligned, and then move the driving meshing gear axially to make...

AI Technical Summary

Problems solved by technology

However, the shifting impact of the gear shifting of the meshing sleeve is relatively large. In order to reduce the shifting impact, it is necessary to improve the control accuracy of the motor so that the driving meshing gear and the driven meshing gear are completely aligned, and then move the driving meshing gear axially to make it Fully meshes with the driven gear

This kind of meshing method, which relies on the complete alignment of the driving meshing gear and the driven meshing gear, requires high control accuracy of the motor, thus increasing the control cost

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