CN2324000Y - Automatic chang-speed gearing control device for vehicle - Google Patents

Abstract

The utility model relates to a vehicle fitting, particularly an automatic change-speed gearing control device which can be applied to vehicles whose gearboxes control the change of speed. The utility model is driven by a micromotor by the cooperation of a cam and a swing rod; automatic change-speed gearing is realized under the control of an electronic controller.

Description

The vehicle automatic range conversion controller

The utility model relates to vehicle body fittings.Specifically refer to all applicable automatic range conversion controller of all vehicles by mechanical gear box control change speed.

All vehicles by change speed gear box control change speed, as automobile, tank, trac. etc., its transmitting ratio is changed, thereby reach the different speed of running gear the variation of power by driving engine through the different engagement combinations of each shaft gear in the change speed gear box.The combination of different gears mesh is called gearshift in this change speed gear box.The variation of gear has been realized by the manual handling shifter bar since the own self-propelled vehicle, until remain like this today always.Developed into autoshift afterwards.What sixties application in the past was more is all-hydraulic control formula automatic shift system.Nineteen eighty-three, the Japan Isuzu Motors car company released electronically controlled fully mechanical automatic transmission with hydraulic torque converter in the world first.It is subjected to user's welcome deeply than former fluid pressure type automatic gear changer fuel-economizing 10%-30%.This automatic shift system has three most important part.Be signal transducer, electronic controller and actuating unit.Signal transducer changes the mechanical parameter of the relevant status information of vehicle ' into electric signal, electronic controller is accepted the intervention information that these signals and chaufeur give, compare computing, again according to the program that is stored in advance in the controller, send instruction, actuating unit is accepted the instruction of control circuit, makes mechanical action according to the requirement of instruction, adapts to the requirement of travelling automatically.The present actuating unit that uses, controller for shifting is made up of the two large divisions, shift tower with push away frequency modulator.The hydraulic ram that action element is used is by solenoid control, and according to programmed instruction, shift tower is conducted in the action of gear selecting electromagnetic valve, the gear of change speed gear box is pushed selected position, and closed electromagnetic valve pushes away a grade electromagnetic valve action, push away the frequency modulator action, shift the gear of choosing onto position, finish gear shift.The defective of this selector is the structure more complicated, and the program of electronic controller is also complicated, and the Hydraulic Elements leakage of oil always can influence action accuracy.Its mechanical type full automaticity selector, just the change speed gear box of automobile itself is mechanical, but the actuating unit of control change speed gear box remains fluid pressure type.

The purpose of this utility model is intended to make the fully mechanical automatic gear changer to become fully mechanical worthy of the namely, the fluid pressure type structure do not occur, thereby makes selector simple in structure, and action is accurately reliable.

The utility model is to realize by the technical scheme of narrating below: simple in structure in order to make, and compactness, action is accurately reliable, in the design gear selecting is combined with pushing away shelves, becomes a three dimensional space action.This at home and abroad releases first, and cam and fork are combined, the vehicle automatic gearshifting controller that is used as power by general miniature motor.Stretching out on the gear shift fork bar of change speed gear box, connect a fork, vertical with the gear shift fork rod axis, and be provided with the cam tangent with fork in fork one side, the other end of fork connects with cam.The radius size of cam is divided into plurality of sections in circumference, every section inside radius equates, hop count is identical with the gear shift rail change location number of change speed gear box, on the identical cam circle side face of every section radius, all be provided with the sine curve T slot, action is the fork shift stroke, and being shaped as of the end that fork connects with cam is cylindrical.The face of cylinder is pressed on the cam face, stretches out a T shape pin on the cylinder, is locked in the sine curve T slot of cam face.Cam rotation is driven by micromotor, cam is contained in the casing, micromotor process worm gear reducer drive cam turns over an angle by the instruction of electronic controller, because cam radius varies in size, the rising of cam periphery or reduction, the end that fork is connected with cam raises synchronously or reduces, what fork connected with gear shift fork will not move, can only make angle of fork twisting, the gear shift fork bar is twisting synchronously just, has finished the block selecting action.Fork is locked in the interior end of sine curve T slot on the cam outer circumference surface, rotation with cam, be limited in the groove, shape according to groove changes axial location on the cam circle side face, the end that fork connects with the gear shift fork bar, with the fork fulcrum is that symmetric points are done oppositely directed relatively longitudinal travel, has finished the action that pushes away shelves.So far utilize cooperating of cam and fork, reach the purpose of gear shift fork bar rotational angle and longitudinal travel, finished gear selecting and pushed away shelves.Cooperate the electronic controller programming control, finished self-shifting control, realized fully mechanical.

Diagram is the structural representation of the utility model automatic range conversion controller of reequiping on Tianjin Xiali coventional type car, also is the most basic a kind of structural shape of the utility model, and is existing as embodiment, to the little further description of the utility model:

Fig. 1. the utility model structural principle scheme drawing

Illustrate: 1. sensor 2. retarder worm gears 3. shift cams 4. forks 5. fork fulcrum pieces 6. gear shift fork bars 7. fork vertical plane surfacies swing fulcrum 8. fork horizontal surfaces are swung fulcrum

On Xiali automobile variable speed casing,, shift cam 3, retarder worm gear 2 are installed in the casing with existing casing of bolt on the casing.The design's shift cam and deceleration worm gear join together, use nylon material, in order to reduce to impact.Retarder worm gear 2 is driven by micromotor.What the design's micromotor and deceleration worm screw were used is the Wiper motor of automobile.But cam and worm gear machine up, but also injection mo(u)lding.Motor rotates shift cam 3 through the retarder transferring power.The time of rotating, the angle that turns to or turn over all by the decision of electronic controller program, realizes by sending instruction.Fork 4 one ends are connected in flat 6 joint boots of gear shift fork of Xiali car with pin.The other end is locked in the sine curve T type groove of circumferential surface of shift cam 3.Establish a fork fulcrum piece 5 in the centre of fork 4.The swing fulcrum 7 of fork vertical plane surface, on the sidewall of fulcrum piece 5, effect is a fork end when axially moving in the sine curve groove, fork moves axially thereby reach gear shift fork bar 6 around 7 swings of vertical plane surface swing fulcrum, realizes young grade.Fork horizontal surface swing fulcrum 8 can be to go up on one point to rotate, and also can slide in an arc groove, and the radius of arc groove is the distance of the center of gear shift fork bar 6 to horizontal surface swing fulcrum 8.The difference of these two kinds of versions can determine shift cam 3 lifts to vary in size.The swing of fork in horizontal surface can make gear shift fork bar 6 twisting angles.These bar twisting 5 degree of Xiali car just can be realized the function of gear selecting in 51 minutes.Fork one end is locked in the T type groove, and it is to rock about the 3-4 shelves symmetry of center that the design is based on gear selecting.Thereby the such simplicity of design of fork is feasible, and guarantees that gear selecting is reliable.Sensor 1 is the mode of operation of record selector.Specifically be that record shift cam 3 goes to certain gear.Whether be transferred to electronic controller, relatively working for it puts in place.Reliable operation, simple in structure.So far reach the purpose of this utility model, implement to finish.

Claims (2)

1. drive to carry out the vehicle automatic range conversion controller of actuating mechanism by micromotor by retarder for one kind, it is characterized in that carrying out actuating mechanism is cam and fork.Stretching out connection one fork on the gear shift fork bar of change speed gear box, vertical with the gear shift fork rod axis, and be provided with the cam tangent with fork in fork one side, the other end of fork contacts with cam, the radius size of cam is divided into plurality of sections in circumference, the radius in every section equates that hop count is identical with the positional number of change speed gear box gear variation, all be provided with sine curve T type groove on the identical cam circle side face of every section radius, its action is the fork shift stroke.

2. the vehicle automatic range conversion controller of narrating according to claim 1, it is cylindrical to it is characterized in that a end that fork contacts with cam is shaped as, and the face of cylinder is pressed on the cam face, stretches out a T type pin on the cylinder, is locked in the cam face sine curve T type groove.