CN102287511A

CN102287511A - Compact automobile four-wheel drive gearbox

Info

Publication number: CN102287511A
Application number: CN2010102117632A
Authority: CN
Inventors: 贾新成
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-06-18
Filing date: 2010-06-18
Publication date: 2011-12-21

Abstract

The invention relates to an automobile four-wheel drive gearbox which is suitable for four-wheel drive of saloon cars and SUVs (Sport Utility Vehicle). A four-wheel drive gearbox capable of keeping advantages and also overcoming a part of defects is designed based on a full-time four-wheel drive principle by aiming to the advantages and the defects of three kinds of four-wheel drive vehicles, namely half-time, full-time and real-time four-wheel drive vehicles, wherein front-wheel drive, full-time four-wheel drive and differential-locked four-wheel drive can be realized by electric and manual shift through the four-wheel drive gearbox disclosed by the invention; and the four-wheel drive gearbox can be formed by modifying a longitudinal two-shaft type gearbox (such as Santana gearbox), and parts of an input shaft can be almost changeless, the output shaft makes a front-wheel drive shaft and a back-wheel drive at the same axle center through a central differential, and a front main reducing gear and a back main reducing gear can be operated through first-grade transmission in the gearbox, thus the structure is compact and the efficiency is good.

Description

A kind of automobile 4 wheel driven speed changer of compactness

Technical field: this is a kind of automobile 4 wheel driven speed changer, and this 4 wheel driven speed changer is fit to the four-wheel drive of car and SUV car.

Background technique: present four-wheel driven car has three kinds substantially: half 4 wheel driven, AWD, in good time 4 wheel driven, they all have the pluses and minuses of itself.When travelling on good road, drives by the half four-wheel driven car with two, preceding driving mechanism does not turn round, travelling of this moment is the same with general-utility car very fuel-efficient, need descend handlebar front axle head clutch to hang up when cross-country to get on the bus again and hang 4 wheel driven and travel, make driver operation inconvenience, so because can not run at high speed when not having the center differential 4 wheel driven.So because have afterburning case reinforcement cross-country power very strong.The AWD car has center differential, driving stability safety, control, there is the AWD car cross-country power of central differential lock also fine, but minimum two-stage above transmission, the power of needing just can enter the front and back main reducing gear, the resistance that two sets of transmission mechanism produce before and after when travel in good road is big, so than excessive fuel consumption.In good time can two drive also can 4 wheel driven for the 4 wheel driven electronic control, the power that rear tyre distributes when four-wheel drive is less, under the 4 wheel driven situation less than the car of AWD band differential lock, and there is not the differential mechanism influence to control, two trailing wheel of front-wheel drive when driving servo-actuateds, but trailing wheel drives the driving mechanism idle running of whole back, thus unnecessary resistance is also arranged, than excessive fuel consumption.

Summary of the invention: for half, full-time, the pluses and minuses of in good time three kinds of four-wheel driven cars, I am with AWD principle a kind of 4 wheel driven speed changer that can keep advantage and can overcome the part shortcoming again that has been basic design, this 4 wheel driven speed changer can be accomplished the forerunner by electronic and manual engage a gear, AWD, with the locked 4 wheel driven of differential mechanism, can on vertical basis of putting twin-shaft transmission (as Santana's speed changer), make the 4 wheel driven speed changer into, and the part of input shaft almost can not change, output shaft makes forerunner's axle and rear-guard axle on an axle center by center differential, main reducing gear before and after the one-level transmission just can enter in gearbox, the compact structure excellent in efficiency.

Description of drawings: see Fig. 1; A kind of automobile 4 wheel driven speed changer of compactness has; Axle sleeve 1, forerunner's axle 2, five grades of gears 3, half front axle gear 4, center differential 5, back differential gear 6, rear-guard axle 7, engage a gear cover 8, rear propeller shaft 9

Commonly vertical put twin-shaft transmission and made the 4 wheel driven speed changer into because be, so it will have the input shaft and the output shaft of speed changer, the forerunner's axle and the rear-guard axle that also need the 4 wheel driven part, this 4 wheel driven transmission input shaft and common speed changer do not have any difference substantially, but output shaft is exactly an axle sleeve 1, one two three four five driven gears that reverse gear are on axle sleeve 1 (so omit not expression among some parts on input shaft and the output shaft and the very little figure of the present invention's relation, that represent among the figure is the figure relevant with 4 wheel driven) entirely.

Five retaining gears 3 on axle sleeve 1 are connected with center differential 5, so pass on the center differential 5 through the power after the speed change, center differential 5 passes to power on forerunner's axle 2 and the rear-guard axle 7 by half front axle gear 4 and back differential gear 6.To be main deceleration bevel pinion, rear portion from the internal diameter of axle sleeve 1 pass with the internal spline of differential gear 4 in the front portion of forerunner's axle 2 is connected, and the anterior internal diameter of axle sleeve 1 floats combinations, its rear portion internal diameter too by needle bearing (or copper sheathing) and forerunner's axle 2.Rear-guard axle 7 is connected with back differential gear 6 splines, and the rear portion of rear-guard axle 7 is by bearing and rear propeller shaft 9 unsteady combinations, and its external diameter is useful on the spline of engage a gear.The external diameter of rear propeller shaft 9 also is useful on the spline of engage a gear.Center differential 5 also is useful on the spline of engage a gear.Engage a gear cover 8 has two engage a gear internal splines, one and center differential 5 combinations, one and 9 combinations of rear-guard axle 7 rear propeller shafts.Under normal forthright running condition, front shaft sleeve 1 is the same with forerunner's axle 2 rotating speeds, mutually between not motion, but when automobile turning and wheel-slip, differential mechanism works, and forerunner's axle 2 and rear-guard axle 6 rotating speeds are different, and forerunner's axle 2 also rotates relative to front shaft sleeve 1 simultaneously.

Can manually also can be electronic to controlling of engage a gear cover 8, Fig. 1; Engage a gear cover 8 moves on to anterior locations to be separated with rear propeller shaft 9, at this moment is connected lockedly with rear axle 7 differential mechanisms 5, and differential mechanism 5 axle sleeves 1 and forerunner's axle 2 fuse and turn round together, at this moment are front-wheel drives.Fig. 2; Engage a gear cover 8 moves on to the back, and engage a gear cover 8 separates with differential mechanism 5, still be connected with rear-guard axle 7 rear propeller shafts 9, and at this moment be AWD, center differential 5 proper functioning.Fig. 3, engage a gear cover 8 be in the centre, and engage a gear cover 8 all is connected with rear propeller shaft 9 with rear-guard axle 7 with differential mechanism 5, at this moment is the locked 4 wheel driven of center differential 5.

Embodiment: at first need a few cover samples of development and design to test, pinpoint the problems and deal with problems, just can consider to produce in batches if performance is fine, the market prospects of this system should be fine.But development cost may be very high, so need investment funds, auto maker, auto parts and components manufacturing company, preferably can obtain government and support.

Claims

1. the automobile 4 wheel driven speed changer of a compactness comprises; Axle sleeve 1, forerunner's axle 2, five grades of gears 3, half front axle gear 4, center differential 5, back differential gear 6, rear-guard axle 7, engage a gear cover 8, rear propeller shaft 9.

Its feature; Five retaining gears 3 on axle sleeve 1 are connected with center differential 5, so pass on the center differential 5 through the power after the speed change, center differential 5 passes to power on forerunner's axle 2 and the rear-guard axle 7 by half front axle gear 4 and back differential gear 6.To be main deceleration bevel pinion, rear portion from the internal diameter of axle sleeve 1 pass with the internal spline of differential gear 4 in the front portion of forerunner's axle 2 is connected, and the anterior internal diameter of axle sleeve 1 floats combinations, its rear portion internal diameter too by needle bearing (or copper sheathing) and forerunner's axle 2.Rear-guard axle 7 is connected with back differential gear 6 splines, and the rear portion of rear-guard axle 7 is by bearing and rear propeller shaft 9 unsteady combinations, and its external diameter is useful on the spline of engage a gear.The external diameter of rear propeller shaft 9 also is useful on the spline of engage a gear.Center differential 5 also is useful on the spline of engage a gear.Engage a gear cover 8 has two engage a gear internal splines, one and center differential 5 combinations, one and 9 combinations of rear-guard axle 7 rear propeller shafts.Under normal forthright running condition, front shaft sleeve 1 is the same with forerunner's axle 2 rotating speeds, mutually between not motion, but when automobile turning and wheel-slip, differential mechanism works, and forerunner's axle 2 and rear-guard axle 6 rotating speeds are different, and forerunner's axle 2 also rotates relative to front shaft sleeve 1 simultaneously.