CN201443584U

CN201443584U - Automatic gearbox for vehicle

Info

Publication number: CN201443584U
Application number: CN2009200144407U
Authority: CN
Inventors: 常宝辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-06-08
Filing date: 2009-06-08
Publication date: 2010-04-28
Anticipated expiration: 2019-06-08

Abstract

An automatic gearbox for a vehicle includes a main shaft, an output shaft, a transmission gear, and synchronizer clutches, wherein the main shaft and the output shaft are supported on a box body, and the transmission gear and the synchronizer clutches are mounted between the main shaft and the output shaft. The gear box is characterized in that a pump wheel of a fluid coupling or a fluid torque-rise device is supported on the main shaft and on the inner side or the outer side of the box body; a worm wheel at the output part of the fluid coupling or the fluid torque-rise device is connected with a tubular countershaft, the countershaft is sleeved on the outer side of the main shaft and a bearing is arranged between the counter shaft and the main shaft; a reverse-gear driving wheel and a first-gear driving wheel are fixedly connected on the countershaft, and a first-gear clutch is arranged on the first-gear driving wheel or a first-gear driven wheel which is sleeved on the output shaft and matched with the first-gear driving wheel; and each synchronizer clutch is connected with a servo gear-shift mechanism. Compared with the prior automatic gearbox, the automatic gear box has the advantages of simple integral structure, simplicity and practicality in realization of automatic gear shifting, and great reduction of manufacturing cost.

Description

Automobile-used automatic transmission case

Technical field

The utility model relates to a kind of gearbox, particularly a kind of automobile-used automatic transmission case.

Background technique

Existing automobile-used gearbox mainly contains two kinds, a kind of is manually operated type, its gearbox designs is that a casing is arranged, the main shaft that joins with motor, flywheel, clutch is arranged at the casing internal support, paralleled output shaft with main shaft, many intermeshing driving gears of group and driven gear and synchronous connection sleeve have been installed on main shaft and output shaft.Each synchronous connection sleeve is driven by control gear and is used for the conversion gear.Output gear and differential mechanism on the final output shaft match, and drive semiaxis and wheel by differential mechanism.The gearbox of this structure is implemented the self shifter difficulty, and particularly starting is more difficult, needs manually gearshift, and automaticity is low.Another kind is an automatic type, and the most frequently used in the automatic type is planetary gear construction, and its structure is very complicated, the manufacture cost height, and transmission efficiency is low, and is less economical.

Summary of the invention

The purpose of this utility model provides the automobile-used automatic transmission case that a kind of overall structure is simple, cost is low, economical and practical, overcomes the deficiencies in the prior art.

Automobile-used automatic transmission case of the present utility model, it comprise main shaft 19 and the output shaft 1 that is bearing on the casing 20 and be contained in main shaft 19 and output shaft 1 between speed change gear and synchronous connection sleeve, it is characterized in that: on main shaft 19, be positioned at the inboard of casing 20 or the outside is supported with fluid coupling or fluid power torque dupler 22 by second overrunning clutch 16 pump impeller, the carry-out part turbine of fluid coupling or fluid power torque dupler 22 is taken over shape countershaft 17, and countershaft 17 is sleeved on main shaft 19 outsides and between is provided with bearing 18; Reverse gear driving wheel 10 and one the retaining driving wheel 21 be fixedly connected on the countershaft 17, one the retaining driving wheel 21 on or be sleeved on the output shaft 1 and with one the retaining driving wheel 21 match one the retaining driven wheel 3 be provided with one the retaining overrunning clutch 2; Described each synchronous connection sleeve is connected with powershift mechanism.

Automobile-used automatic transmission case of the present utility model, to compare overall structure simple with existing automatic transmission, realizes that automatic speed changing is simple and practical, and can make full use of the throughput of China's manual transmission, greatly reduces manufacture cost.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment.

Embodiment

With one of the five forward gearbox that reverses gear is example, and as shown in Figure 1: 12 is motor, 11 flywheels for joining with engine crankshaft, and 13 for being located at the clutch between flywheel 11 and the main shaft 19.Can pass through flywheel, 19 rotations of clutch 13 drive main shafts during engine rotation.20 is the casing of gearbox, and the bump 23 into a single integrated structure with casing 20 arranged in the inboard of casing 20, and main shaft 19 is bearing on the tank wall on the endoporus of bump 23 and opposite by main shaft bearing 14.The outside at bump 23 is equipped with the fluid power torque dupler of selecting for use 22 by first overrunning clutch 15.The pump impeller input part of fluid power torque dupler 22 joins with main shaft 19 by second overrunning clutch 16, and the carry-out part turbine of fluid power torque dupler 22 is taken over shape countershaft 17, and countershaft 17 is sleeved on main shaft 19 outsides and between is provided with bearing 18.

A reverse gear driving wheel 10 and a retaining driving wheel 21 is fixedly connected on the countershaft 17, be sleeved on the output shaft 1 and with a retaining that a retaining driving wheel 21 matches one retaining overrunning clutch 2 is installed on the driven wheel 3.

The driving wheel 10 that reverses gear is meshed with the intermediary wheel 8 that reverses gear on the intermediary wheel shaft 9, intermediary's wheel shaft 9 is fixedlyed connected with the sidewall of casing 20, on output shaft 1, be set with the reverse gear driven wheel 7 and intermediary wheel 8 engagements of reversing gear, keep off between the driven wheel 3 at the driven wheel 7 and that reversing gear on the output shaft 1 and be equipped with one, synchronous connection sleeve 4 reverses gear.

Being fixed with output gear 6 on the output shaft 1 is meshed with differential mechanism input gear 5.

On main shaft 19, be fixed with two retaining driving wheels 24 and three retaining driving wheels 25, be set with four retaining driving wheels 26 and five retaining driving wheels 27.Be set with four, five retaining synchronous connection sleeves 28 on the main shaft 19 between four retaining driving wheels 26 and the five retaining driving wheels 27.

On output shaft 1, be set with two retaining driven wheels 29 that are meshed with two retaining driving wheels 24 and the three retaining driven wheels 30 that are meshed with three retaining driving wheels 25, on the output shaft 1 between two retaining driven wheels 29 and the three retaining driven wheels 30, two, three retaining synchronous connection sleeves 33 be installed.On output shaft 1, be fixed with four retaining driven wheels 31 that are meshed with four retaining driving wheels 26 and the five retaining driven wheels 32 that are meshed with five retaining driving wheels 27.Car is so long as in direction of advance, and positive one grade of synchronous coupling meshes all the time.

Above-mentioned fluid power torque dupler 22 also can be located at the outside of casing 20, also can select for use fluid coupling to substitute, and clutch 13 also can be selected the wet clutch that is incorporated into gearbox inside for use.

During installation, this speed changer is located at the rear portion of clutch 13, at the inner chamber of main shaft 19 oil pump shaft and flywheel 11 is housed and is connected by spline, rotates the oil supply system work that drives speed changer thereby oil pump shaft drives oil pump.

Claims

1. automobile-used automatic transmission case, it comprise main shaft (19) and the output shaft (1) that is bearing on the casing (20) and be contained in main shaft (19) and output shaft (1) between speed change gear and synchronous connection sleeve, it is characterized in that:

On main shaft (19), be positioned at the inboard of casing (20) or the outside is supported with fluid coupling or fluid power torque dupler (22) by second overrunning clutch (16) pump impeller, the carry-out part turbine of fluid coupling or fluid power torque dupler (22) is taken over shape countershaft (17), and countershaft (17) is sleeved on main shaft (19) outside and between is provided with bearing (18);

A reverse gear driving wheel (10) and a retaining driving wheel (21) is fixedly connected on the countershaft (17), a retaining driving wheel (21) go up or be sleeved on the output shaft (1) and be provided with a retaining overrunning clutch (2) with a retaining driven wheel (3) that a retaining driving wheel (21) matches;

Described each synchronous connection sleeve is connected with powershift mechanism.