Vehicle clutch control mechanism and protection method based on voice coil motor drive

Abstract

The invention discloses a vehicle clutch control mechanism driven by a voice coil motor, which comprises a vehicle controller, a voice coil motor, an electromagnetic lock, a rocker arm type shift fork, a release bearing and a clutch. The drive current output terminal of the vehicle controller is connected to the drive signal input terminal of the voice coil motor, the digital switch output module of the vehicle controller is connected to the control signal input terminal of the electromagnetic lock, and the push rod of the voice coil motor is provided with a groove. The lock head of the electromagnetic lock matches the groove on the push rod. The end of the voice coil motor push rod is fixedly connected to the top of the separated rocker part of the rocker arm type shift fork, and the shift fork part of the rocker arm type shift fork is connected to the part of the release bearing. The outer ring is fixedly connected. The invention adopts a voice coil motor to realize linear motion, reduces conversion devices such as worm gears and ball screws, and has simple structure, low noise, fast speed and high precision.

Description

technical field [0001] The invention relates to the technical field of automobile transmission, in particular to a vehicle clutch control mechanism and protection method driven by a voice coil motor. Background technique [0002] Traditional vehicles driven by internal combustion engine power only use clutch slipping to realize stable loading of engine torque. In hybrid vehicles, there are technical solutions that use planetary gears (as described in patents such as ZL201110202014.8) or clutches (as described in patents such as ZL201510738035.X) to achieve torque coupling between the engine and the motor. At present, a large number of diaphragm spring clutches are used in traditional vehicles, and their use is very mature, with low manufacturing costs and stable supply chains. More technical schemes adopt the addition of actuators on the basis of diaphragm spring clutches to realize the automatic separation and combination of clutches. [0003] The Chinese patent with the ...

AI Technical Summary

Problems solved by technology

[0004] (1) Since most of the diaphragm spring clutches are normally closed clutches, the air pressure of the air storage tank of the whole vehicle is insufficient after parking (the vehicle gas circuit expands with heat and contracts with cold in winter or the aging of the pipeline after 1 to 2 years of use leads to a decrease in sealing performance, causing leakage air) and the air compressor is not working properly (the air source of the vehicle usually comes from the air compressor that comes with the engine, and when the engine is not started, it relies on an additional electric air compressor powered by the vehicle's low-voltage battery, and the electric air compressor has a limited life)

The engine cannot be started because the clutch is closed, and there is no separation air source in the vehicle. It is necessary to attach an additional clutch separation backup device to the vehicle (such as an independent manual clutch separation mechanism that does not rely on the power of the vehicle's air circuit), or forcefully pry it open with a tool. The clutch makes it disengage, seriously affecting the normal use of the vehicle

[0005] (2) The clutch separation stroke is usually 8-10mm. After the diaphragm spring clutch is used for 80,000 to 120,000 kilometers, due to wear, or the positioning pin wears and becomes thinner, the stroke of the clutch rocker arm needs to be manually readjusted to adjust the positioning. These slight changes depend on maintenance Personnel maintenance inspection has high requirements for personnel level

[0010] None of the above schemes considers the wear of the clutch, which causes the clutch to not really disengage or engage after the action of the actuator (that is, the action stroke of the actuator may require regular maintenance, and the maintenance depends on manual experience, and there is a risk of failure)

Images