Novel gear selecting and changing device for automobile double-clutch transmission

Abstract

The invention discloses a novel gear selecting and changing device for an automobile double-clutch transmission. The novel gear selecting and changing device comprises a drive drum gear, a driven drumgear, a gear changing rod assembly and a position sensor. The gear changing rod assembly comprises a gear changing rod, a connecting rod and a reset spring. The gear part of the drive drum gear and the gear part of the driven drum gear are engaged, the drive drum gear is externally connected with a power device, and power gear shifting heads and neutral position shifting heads are distributed onthe surface of the drum part according to the rule. Due to bidirectional rotation of the drive drum gear and the driven drum gear, the corresponding power gear shifting heads and neutral position shifting heads are driven to rotate, and therefore the gear shifting rod is pushed to rotate or overall move, and a gear shifting clutch at the tail end of the connecting rod is finally driven to switch the gear. The gear selecting and changing device is simple in structure, small in occupation area, convenient to control, capable of reducing cost and capable of reducing the transmission size at the same time; gear mistaking and gear disordering are prevented; the gear shifting process is smooth and low in noise, and power consumption is low; and transformation of the device is simple and convenient during gear increasing.

Description

technical field [0001] The invention belongs to a gear selection and shifting device of an automobile gearbox, in particular to a novel gear selection and shifting device of an automobile dual-clutch gearbox. Background technique [0002] Dual-clutch gearboxes are the most common form of gearbox in cars today. It works together through two sets of clutches to control the odd and even gears respectively. It combines the advantages of manual transmission and automatic transmission. Instead of using a torque converter, it uses two sets of clutches. The two sets of clutches work alternately to achieve the effect of shifting gears without gaps, with low energy consumption and no setbacks. Sensation, smooth shifting. [0003] In the prior art, such as the shifting arrangement and shifting method for the motor vehicle gearbox provided by the authorized announcement number CN104913050B, each shift shaft (or camshaft) of the shift selection device of the dual-clutch gearbox of the ...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, such as the shifting arrangement and shifting method for the motor vehicle gearbox provided by the authorized announcement number CN104913050B, each shift shaft (or camshaft) of the shift selection device of the dual-clutch gearbox of the invention Coaxial arrangement, each shift shaft (or camshaft) needs its own external power to rotate, the structure is too complicated; the distribution of the shift cam on the shift shaft (or camshaft) is not set for error prevention, and errors will occur Gears or random gears; a single push rod can only control one gear, and its reverse movement requires the same push rod and connecting device, the structure is too complicated; each time it needs to return to neutral before selecting and shifting gears, the gear shifting shaft Frequent positive and negative rotation results in long shift response time and affects the life of parts. These design shortcomings make the device take up a lot of space, complex structure, too many parts, high cost, high failure rate, which is not conducive to maintenance; The shift control is complicated, the noise is loud, and the control response is slow; it is not conducive to the precise control of shift selection

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