CN101418847B

CN101418847B - Fully-automatic gearbox for vehicle

Info

Publication number: CN101418847B
Application number: CN200710181277.9A
Authority: CN
Inventors: 王文安
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-10-26
Filing date: 2007-10-26
Publication date: 2014-05-07
Anticipated expiration: 2027-10-26
Also published as: CN101418847A

Abstract

Disclosed is a vehicle full-automatic transmission used in motor vehicle transmission system. The transmission comprises one input shaft gear and a group of output shaft gear having different size and tooth number, wherein all the gears are helical gears. The helical gear has axial component force, the input shaft gear can move left and right under the function of the axial component force, and the input shaft gear can also drive an input shaft supporting plate to move up and down together under the function of a variable speed gear lift force and a return spring pulling force. The transmission can automatically change the engage position of the input shaft gear on the output shaft gear according to the driving resistance o the motor vehicle on different road conditions so as to generate suitable speed and torque to achieve the purpose that the motor vehicle can run normally on different road conditions.

Description

Fully-automatic gearbox for vehicle

Technical field

The present invention is for motor vehicle powertrain, and its entirety is transmission assembly.

Background technique

At present, vehicular transmission all will be used automatically controlled, hydraulics, could realize automatic speed changing.

Summary of the invention

For make vehicular transmission safer, work reliably, this type of speed changer has saved complicated electricity, liquid control technique, has realized mechanical automatic speed-changing, and its structure is greatly simplified.

The technical solution adopted for the present invention to solve the technical problems is; Gear in this fully-automatic gearbox for vehicle is angular gear, utilizes the axial thrust load of angular gear and the reaction force of return spring to work.In Fig. 1, on output shaft, three shelves gears are concentric with output shaft, two speed change gears and output shaft decentraction, two speed change gears and one, second gear or two, three-range transmission crown are equal, at three shelves gears, have at least two teeth axially to overlap with two equal places of speed change gear crown like this, during input shaft gear work, engage with output shaft gear full-depth tooth all the time.Input shaft axially can seesaw, and moves up and down together with input shaft supporting plate, and input shaft gear can be according to output shaft drag size, drives axial direction positioning device and input shaft supporting plate to select operation one, two, between three-range transmission.Gear edge boss is back-up ring, and its effect is that input shaft gear only when three shelves gears overlap position with two speed change gear crowns, just can move right when automobile shifts up.

The invention has the beneficial effects as follows, application machine automatic Transmissions Technique, makes fully-automatic gearbox simple structure, easy-maintaining and maintenance, and full-depth tooth engagement, reliable operation, therefore the life-span is long, and cheap for manufacturing cost.

Accompanying drawing explanation

Fig. 1 is the longitudinal section tectonic maps of fully-automatic gearbox working principle.

Fig. 2 is output shaft gear right elevation, wherein 3 is one, second gear speed change gear, 4 is two, three class gear shift gear, and 6 is one grade of gear, the 7th, and intermediate gear, the 8th, three-range transmission.

Fig. 3 is the mounting point figure of fully-automatic gearbox on automobile.Truck can use two-stage fully-automatic gearbox, to reduce weight and the volume of fully-automatic gearbox.

Fig. 4 is the 14 vertical planing surface enlarged views of Fig. 1.Wherein 14-1 is axially locating spring, and 14-2 is axially locating roller, and input shaft 9, according to automobile running resistance size, drives axial direction positioning device 14 motion between one grade of location raceway groove 11, second gear location raceway groove 12, third gear location raceway groove 13.

1. output shafts in Fig. 1, 2. output shaft bearing, 3. one, second gear speed change gear, 4. two, three class gear shift gear, 5. input shaft gear, 6. one grade of gear, 7. intermediate gear, 8. three-range transmission, 9. input shaft, 10. axial return spring, 11. 1 grades of axially locating raceway grooves, 12. second gear axially locating raceway grooves, 13. third gear axially locating raceway grooves, 14. axial direction positioning devices, 15. shaft universal-joints, 16. bearings of input shaft, 17. input shaft supporting plates, 18. downward return springs, 19. third gear locating slots, 20. second gear locating slots, 21. 1 grades of locating slots, locating stud Shang Xia 22., spring assembly.

Embodiment

In Fig. 1, Engine torque is added on input shaft gear 5 by transmission shaft, universal joint 15, and input shaft 9 does not move under the effect of axial direction positioning device 14, and moment of torsion passes on output shaft 1 by three-range transmission 8.

1. downshift, when output shaft 1 resistance increases to certain value, the axial thrust load of helical teeth will be broken away from third gear axially locating raceway groove 13, input shaft gear 5 will be to left movement, compressional axis is to return spring 10 simultaneously, input shaft gear 5 is by three-range transmission 8 and two, three class gear shift gear 4 crown overlapping positions enter into two, in three class gear shift gear 4, speed change gear 4 decentraction, to break away from upper and lower positioning device 22, draw high downward return spring 18 simultaneously, input shaft gear 5 is lifted to two, three class gear shift gear 4 and intermediate gear 7 crowns are when parallel, second gear locating slot 20 arrives positioning device 22 and locks, input shaft gear 5 continues toward moving left under the effect of axial thrust load, when parallel with intermediate gear 7, axial direction positioning device 14 arrives second gear location raceway groove 12, input shaft gear 5 is locked on second gear.Due to the inertia of navigation system, under the output shaft resistance of certain limit, speed changer will keep dynamic balancing.If the resistance of output shaft 1 continues to increase, dynamic balancing was lost efficacy, and input shaft gear 5 will repeat said process, enter one grade of operation.

2. shift up; When input shaft gear 5 is engaged on one grade of gear 6, if output shaft 1 resistance reduces, under the effect reducing at input shaft return spring 10 and helical teeth axial thrust load, axial direction positioning device 14 ejects from one grade of location raceway groove 11, and input shaft gear 5 will enter intermediate gear 7 through one grade of gear 6 and, second gear speed change gear 3 crown overlapping positions.Simultaneously upper and lower positioning device 22 ejects from one grade of locating slot 21 under the pulling force of downward return spring 18, input shaft supporting plate 17 down moves, and locking when second gear locating slot 20, under certain limit output shaft resistance, speed changer will keep dynamic balancing, operate on second gear always.If at this moment output shaft 1 resistance continues to reduce, the dynamic balancing of two indexers was lost efficacy, and input shaft gear 5 will enter three-range transmission 8 through intermediate gear 7 and two, three class gear shift gear 4 crown overlapping positions, in third gear, move.

3. backset; At fully-automatic gearbox axial direction positioning device 14 and upper and lower positioning device 22, increase locking mechanism, the gear that can realize three shelves is locked.

Claims

1. a fully-automatic gearbox for vehicle, has an input shaft gear and one group of size and the different output shaft gear of the number of teeth, is angular gear, and input shaft gear and output shaft gear cooperatively interact, and produce three different speed and moment of torsion, it is characterized in that, output shaft gear is hierarchic structure, wherein one grade of gear (6) is concentric with output shaft (1), intermediate gear (7) is concentric with output shaft (1), three-range transmission (8) is concentric with output shaft (1), one, second gear speed change gear (3) and output shaft (1) decentraction, two, three class gear shift gear (4) and output shaft (1) decentraction, one grade of gear (6), one, second gear speed change gear (3), intermediate gear (7), two, three class gear shift gear (4), three-range transmission (8) is fixed on output shaft (1) successively, input shaft gear (5) is fixed on input shaft (9), during fully-automatic gearbox for vehicle work, input shaft gear (5) band driven input shaft (9) and axial direction positioning device (14) do axially and seesaw, and be with driven input shaft planker (17) to move up and down together.

2. fully-automatic gearbox for vehicle according to claim 1, is characterized in that; Input shaft gear (5) is fixed on input shaft (9) left end, and shaft universal-joint (15) is fixed on input shaft (9) right-hand member.

3. fully-automatic gearbox for vehicle according to claim 1, is characterized in that; One grade of gear (6) and one, second gear speed change gear (3) crown are equal, one, second gear speed change gear (3) is equal with intermediate gear (7) crown, intermediate gear (7) and two, three class gear shift gear (4) crown are equal, and two, three class gear shift gear (4) is equal with three-range transmission (8) crown.