Arrangement structure of gearbox gear shaft system

Abstract

The invention relates to an arrangement structure of a gearbox gear shaft system. The structure comprises an input shaft, and two output shafts which are parallel to the input shaft and are positioned on the two sides of the input shaft, wherein the input shaft is fixedly provided with driving gears; driven gears are sleeved on the output shafts and are meshed with the driving gears; a fourth driven gear and a sixth driven gear are meshed with a fourth and sixth driving gear simultaneously; a third driven gear and a fifth driven gear are meshed with a third and fifth driving gear simultaneously; and a reverse gear connecting device is arranged on one output shaft. Through the structure, an inner space is reasonably utilized, a synchronous connecting device has enough installation space, axial positions are approximately the same, the structure has a balanced layout, and the axial distance is short.

Description

technical field [0001] The invention relates to an arrangement structure of a gearbox gear shaft system, in particular to a gear shaft arrangement scheme of a six-speed manual gearbox. Background technique [0002] In the early 1990s, the five-speed gearbox quietly emerged. Major car brands, including Mercedes-Benz, Mitsubishi, Honda, Santana, etc., have successively launched models equipped with five-speed gearboxes. Generally speaking, the fifth gear is generally the second overdrive gear, which reduces the variable transmission ratio and increases the speed of the vehicle. This is the new requirement of the user for the performance of the car after the expressway became popular in China at that time. Before long, the market developed such that cars with five-speed transmissions became mainstream. The structural principle of most five-speed gearboxes is to realize the speed change by the direct meshing of the input shaft and the output shaft gear. [0003] The six-speed...

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Problems solved by technology

[0004] However, the arrangement of the gear shafting of the existing six-speed gearbox is affected by many factors: the matching of the ratio, the matching of the center distance, the limitation of space, the space of the synchronous engagement device and the gear, the axial size, and the balance of the force etc., so that the arrangement of its gear shafting is mostly unreasonable. For example, Japanese Patent No. 4382973 disclosed a manual gearbox on October 2, 2009, which realized six-speed manual transmission through the shafting arrangement of the gears. However, the The shift sequence of the third and fourth gears of the manual transmission is inconsistent with the first, second, fifth and sixth gears, and an additional shift conversion mechanism is required to realize it. The installation space of the synchronous engagement device is small, and the layout is unbalanced

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