CN102384262B - Vehicle speed variation auto-shifting device and method thereof - Google Patents
Vehicle speed variation auto-shifting device and method thereof Download PDFInfo
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- CN102384262B CN102384262B CN201110362638.6A CN201110362638A CN102384262B CN 102384262 B CN102384262 B CN 102384262B CN 201110362638 A CN201110362638 A CN 201110362638A CN 102384262 B CN102384262 B CN 102384262B
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Abstract
The present invention relates to a kind of vehicle speed variation auto-shifting device and method thereof, comprising: step electric machine, be connected with step electric machine and carry out slowing down gear selecting reductor, main shaft, the shifting block being sleeved on main shaft, gear shifting motor, the leading screw being connected with the output of gear shifting motor, the nut being set on leading screw, be sleeved on main shaft and the shift pattern sensor that is connected with main shaft with the shift fork of nut transmission cooperation, the gear selection position sensor that is arranged on gear selecting reductor and between gear selecting reductor and gear shifting motor and be coated with the housing of main shaft.It is an advantage of the invention that simple in construction, light and handy, mechanical efficiency is high；Can realize trip stop, easy for installation, machinery takes up room little；Realizing power smooth transfer, position is accurate, it is easy to accomplish programme-control, selects gear shift action accurate, safe and reliable；With low cost, it is easy to implement.
Description
Technical field
The invention belongs to vehicle component, particularly relate to speed change gear wheel driving device controlling organization on vehicle
Layout and the vehicle speed variation auto-shifting device of installation and method thereof.
Background technology
Being applied to the automatic speed-changing system on automobile at present, the biggest number is by fluid torque-converter and planetary gear
The hydraulic automatic speed variator (AT) of change speed gear box composition, owing to cost is high, oil consumption is big, is often only applied to
High-grade car, it is difficult to universal.The eighties occurs in that on the basis of manual gearing transmission by installing one additional
Set actuator and ECU, it is achieved automated mechanical formula automatic transmission (AMT), its speed change
The control of case has been used up hydraulic actuating mechanism, and this mechanism is by gear selecting, gear shifting oil cylinder, oil pump and electromagnetic valve
Composition, realizes gear selecting and gear shift action by controlling electromagnetic valve.Its shortcoming is that structure is complicated, and cost is relatively
Height, there is power loss in course of action.
The open a kind of vehicle speed variation auto-shifting device of Chinese invention patent ZL01226807.0, its bag
Include motor, decelerator, camshaft, cam disc, one group of selector fork and angular displacement sensor；Described
Motor be connected with camshaft by decelerator, cam disc is axially fixed in camshaft by bonded
On, the end face of cam disc and the end face of the camshaft shaft shoulder are respectively equipped with cam path, one end of described shift fork
Being inserted in both of the aforesaid cam path by straight pin, in the other end of shift fork inserts automobile gearbox, gear shift is dialled
In the groove of block；Described angular displacement sensor is placed in the end of camshaft.It is main scarce that this mechanism exists
Fall into be cam profile be crucial sport technique segment, needs the highest machining accuracy, is unfavorable for producing in batches；
Strict cam profile requires have high-precision sensor to carry out position detection, and to have high control essence
Degree；Gear must rise downshift successively according to cam profile, it is impossible to realizes trip stop.
Summary of the invention
For overcoming the defect of prior art, it is an object of the invention to provide a kind of vehicle speed variation fluid drive
Device, to simplify gearshift structure, improves transmission efficiency, reduces cost, keep in repair easy to use.
The technical scheme is that a kind of vehicle speed variation auto-shifting device, comprising: gear selecting
Motor, be connected with step electric machine and carry out slowing down gear selecting reductor, main shaft, dialling of being sleeved on main shaft
Head, gear shifting motor, the leading screw being connected with the output of gear shifting motor, the nut being set on leading screw, suit
The shift fork coordinated on main shaft and with nut transmission, the gear selection position sensing being arranged on gear selecting reductor
Shift pattern sensor that device is connected with main shaft and between gear selecting reductor and gear shifting motor
And it is coated with the housing of main shaft.
On the basis of technique scheme, farther include following attached technical scheme:
Described gear selecting reductor has output translation shaft and is arranged on the gear selecting of output translation shaft end
Plectrum, and described shifting block is provided with and the annular groove of gear selecting plectrum snap-fit engagement.
All there is a columnar protrusions described nut both sides, and shift fork have with columnar protrusions card dress point
Fork and be sleeved on the socket part of main shaft.
It farther includes all to be electrically connected with described gear selection position sensor and shift pattern sensor
ECU.
Described step electric machine is fastened on gear selecting reductor, and gear selecting reductor and gear shifting motor all fasten
On housing, described main shaft is fixedly connected on housing by being positioned at the bearing at two ends.
Additionally the present invention another solution is that a kind of vehicle speed variation fluid drive method,
It is applied in vehicle speed variation auto-shifting device, comprising:
S1: when ECU judge need gearshift after, ECU control gear shifting motor, drive leading screw and
Nut, and axial thrust is passed to shift fork and on main shaft, forms moment of torsion to drive shifting block to rotate；Lead to again
Cross the position instruction of shift pattern sensor, first march to the neutral position of change speed gear box；
S2: judge whether to need to carry out gear selecting, the most then perform step S3, as no, then perform step
Rapid S5；
S3: ECU controls step electric machine, drives gear selecting reductor, and then drives output translation shaft to produce
Raw axial translation, snaps fits into annular groove set on shifting block by the gear selecting plectrum set in output translation shaft
In, thus drive shifting block translation on main shaft；
S4: indicated by the position of gear selection position sensor again, arrives target gear selection position, it is achieved gear selecting；
S5: ECU controls gear shifting motor, drives leading screw and nut, and passes to axial thrust dial
Pitch and on main shaft, form moment of torsion；And then drive shifting block to rotate；
S6: indicated by the position of shift pattern sensor again, arrives target gear positions, it is achieved gear shift
To terminating.
On the basis of technique scheme, farther include attached technical scheme:
Described vehicle speed variation auto-shifting device includes step electric machine, is connected with step electric machine and subtracts
The gear selecting reductor of speed, main shaft, the shifting block being sleeved on main shaft, gear shifting motor are defeated with gear shifting motor
Go out connected leading screw, the nut being set on leading screw, be sleeved on main shaft and coordinate with nut transmission dial
The shift pattern sensing that fork, the gear selection position sensor being arranged on gear selecting reductor are connected with main shaft
Device and between gear selecting reductor and gear shifting motor and be coated with the housing of main shaft.
Described gear selecting reductor has the output translation shaft with main axis parallel and is arranged on output translation shaft
End the gear selecting plectrum with shifting block snap-fit engagement；And described shifting block is provided with the ring coordinated with gear selecting plectrum
Connected in star；All there is a columnar protrusions described nut both sides；Described shift fork has furcation and is sleeved on
The socket part of main shaft；Described furcation has a pair bifurcated part set relatively, and columnar protrusions blocks respectively
It is contained on corresponding bifurcated part, and nut is between bifurcated part
It is an advantage of the invention that simple in construction, light and handy, mechanical efficiency is high；Trip stop, installation side can be realized
Just, machinery takes up room little；Shifting block is reliably connected with main shaft, reductor output translation shaft, it is achieved power
Smooth transfer, position is accurate, it is easy to accomplish programme-control, selects gear shift action accurate, safe and reliable；
With low cost, it is easy to implement, it is adaptable to shaft type is fixed in any employing grade gear manual-shift gearbox
Vehicle, it is also possible on the basis of not changing former transmission internal structure, is carried out manual gearshift systems certainly
Dynamicization is transformed.
Accompanying drawing explanation
The invention will be further described for comparison accompanying drawing.
Fig. 1 is the structural representation of the present invention, and wherein partial internal structure has announcement；
Fig. 2 is the Fig. 1 generalized section along line A-A.
Detailed description of the invention
Embodiment: as shown in Figure 1-2, it is being embodied as of vehicle speed variation auto-shifting device of the present invention
Example, it includes step electric machine 1, is connected with step electric machine 1 and carries out gear selecting reductor 2, the master slowed down
Axle 3, the shifting block 4 being sleeved on main shaft 3, gear shifting motor 5, it is connected with the output of gear shifting motor 5
Leading screw 6, the nut 7 being set on leading screw 6, it is sleeved on main shaft 3 and coordinates with nut 7 transmission
Shift fork 8, the gear selection position sensor 9 being arranged on gear selecting reductor 2 and changing that main shaft 3 is connected
Gear position sensor 10, between gear selecting reductor 2 and gear shifting motor 5 and be coated with the shell of main shaft 3
Body 11 and with gear selection position sensor 9, shift pattern sensor 10, step electric machine 1, gear shift electricity
The ECU (not marking in figure) that machine 5 is all electrically connected.Wherein step electric machine 1 is fastened on by bolt
On gear selecting reductor 2, and gear selecting reductor 2 and gear shifting motor 5 are fastened on housing 11 by bolt respectively
On, main shaft 3 is fixedly connected on housing 11 by being positioned at the bearing 30 at two ends, and mutual with leading screw 6
Vertically.
Gear selecting reductor 2 has the output translation shaft 20 parallel with main shaft 3 and to be arranged on output flat
Moving axis 20 end the gear selecting plectrum 22 with shifting block 4 snap-fit engagement.Shifting block 4 is provided with and gear selecting plectrum
22 annular grooves 40 coordinated.All there is a columnar protrusions 70 nut 7 both sides.Shift fork 8 has bifurcated
Portion 80 and be sleeved on the socket part 82 of main shaft 3.Furcation 80 has a pair bifurcated part set relatively,
And columnar protrusions 70 is installed on corresponding bifurcated part respectively, and nut 7 is between bifurcated part.By
Fig. 1, it can be seen that gear shifting motor 5 directly drives leading screw 6, is coordinated gear shifting motor by feed screw nut
The torque of 5 is converted into the axial thrust of nut 7；Two columnar protrusions 70 simultaneously set on nut 7 block
It is contained on the furcation 80 of shift fork 8, i.e. guarantees that nut 7 does not rotates, only produce and move axially,
Also ensure that the axial thrust of nut 7 passes to shift fork 8.Shifting block 4 and main shaft 3 both can realize moment of torsion
Transmission, can realize again relative translational movement；Shift fork 8 is sleeved on main shaft 3, it is possible to make pushing away of nut 7
Power produces moment of torsion on main shaft 3.The gear selecting plectrum 22 simultaneously set in output translation shaft 20 snaps fits into shifting block
In annular groove 40 set on 4, it is achieved output translation shaft 20 links with shifting block 4 gapless.Wherein
Both do not contact shifting block 4 at work with shift fork 8, and shifting block 4 is sleeved on main shaft 3, is subtracted by gear selecting
Speed machine 2 can slide on main shaft 3, carries out gear selecting, but can not relatively rotate with between main shaft 3；Dial
Fork 8 is also sleeved on main shaft 3, is driven by feed screw nut so that main shaft 3 rotates, and then makes to dial
Fork 8 rotation, it is achieved gear shift action, can not relatively rotate between shift fork 8 and main shaft 3 simultaneously.
Gear selection position sensor 9 and shift pattern sensor 10 all use angular displacement sensor.Gear selecting position
Put sensor 9 by the position of gear selecting reductor 2 is detected, it is achieved accurate to shifting block 4 axial location
Feedback；And shift pattern sensor 10 is by the detection of the turned position to main shaft 3, it is achieved to shifting block
The accurate feedback of 4 angular position.Owing to gearshift procedure is divided into gear selecting and gear shift: during gear selecting, shifting block 4 is first
Briefly return to vertical position, i.e. drive change speed gear box drive block to return to neutral position；Now by step electric machine 1
And gear selecting reductor 2 drives shifting block 4 to slide realization on main shaft 3 to change speed gear box difference gear drive block
Selecting, after reaching target drives block position, gear selecting action completes；Mainly by shift fork 8 during gear shift
Drive shaft 3 rotates, and then makes shifting block 4 rotate driving change speed gear box drive block, it is achieved gear shift；Work as needs
When changing gear, first pass through gear shifting motor 5 and make shifting block 4 run to vertical position, just drive change speed gear box to drive
Motion block returns to neutral gear；Afterwards according to gear selection position sensor 9 position judgment the need of carrying out gear selecting, as
Need to carry out, then drive shifting block 4 to slide on main shaft 3 arrival by step electric machine 1 and gear selecting reductor 2
Target drives block position；Shifting block 4 is made to drive change speed gear box drive block to enter mesh by gear shifting motor 5 the most again
Mark gear.Wherein shifting block 4 can only slide on main shaft 3, it is impossible to relative main 3 rotates；Shift fork 8 overlaps
It is contained on main shaft 3, it is impossible to relatively rotate with main shaft 3, it is possible to drive shaft 3 rotates, by master
Axle 3 drives shifting block 4 to rotate, and drives change speed gear box drive block, it is achieved enter shelves.Gear selecting can only be driven at change speed gear box
Motion block returns to neutral gear just can be carried out, i.e. shifting block 4 the most down time.
During work, when, after the shift command receiving ECU, first passing through gear shifting motor 5 and drive shifting block
4 return to vertical position (i.e. transmission neutral position), sentence according to gear selection position sensor 9 position afterwards
Disconnected the need of carrying out gear selecting, if desired for carrying out gear selecting；First ECU controls step electric machine 1, drives
Dynamic gear selecting reductor 2, and then drive output translation shaft 20 to produce axial translation, due to output translation shaft
The gear selecting plectrum 22 set on 20 snaps fits in annular groove 40 set on shifting block 4, exports translation shaft
20 link with shifting block 4 gapless, therefore can realize shifting block 4 translation on main shaft 3；Again by gear selecting position
Put the position instruction of sensor 9, arrive target gear selection position, it is achieved gear selecting.Then, ECU control
Gear shifting motor 5 processed, drives leading screw 6 and nut 7, and is installed on furcation 80 owing to nut 7 is provided with
On two columnar protrusions 70, so nut 7 cannot rotate, can be only formed axial thrust, and pass through
Axial thrust is passed to shift fork 8 by columnar protrusions 70, and forms moment of torsion on main shaft 3；And then drive
Shifting block 4 rotates, then is indicated by the position of shift pattern sensor 10, arrives target gear positions,
Realize gear shift.If without gear selecting, then ECU directly controls gear shifting motor 5, passes through shift pattern
The position instruction of sensor 10, arrives target gear positions, it is achieved gear shift.
General change speed gear box has 3 to 4 gear selecting positions, each gear selecting position distribution 1～2 shelves, i.e. shifting block 4 to put
Under vertical state, the neutral position of corresponding change speed gear box, by the shifting block 4 slip on main shaft 3 simultaneously
According to the position of angular displacement sensor, determine gear selecting position；Gear shifting motor is driven afterwards according to ECU
5 drive feed screw nut, and then shift fork 8 and main shaft 3 rotate, and drive shifting block 4 to rotate, it is achieved to change
Shelves action；Assume the gearshift procedure from 1 grade to 2 grade: when needs conversion gear, ECU is first
Driving gear shifting motor 5, shift fork 8 drives main shaft 3 and shifting block 4 to rotate, and senses according to shift pattern
The position feedback of device 10, drives one grade of drive block of change speed gear box to run to transmission neutral position, root afterwards
According to the feedback of gear selection position sensing station 9, as carried out gear selecting, then ECU can drive gear selecting electricity
Machine 1, by gear selecting reductor 2, is fed back by the position of gear selection position sensor 9, drives shifting block 4
Arrive at the target location of gear box second gear drive block, complete gear selecting action；ECU continues to drive gear shift
Motor 5, is fed back by the position of shift pattern sensor 10, drives change speed gear box 2 grades by shifting block 4
Drive block marches to 2 file locations, completes whole gear shift action.
The present embodiment further provides for another technical scheme simultaneously: a kind of vehicle speed variation fluid drive side
Method, it is applied in above-mentioned vehicle speed variation auto-shifting device, and this vehicle speed variation fluid drive
Device at least includes step electric machine 1, be connected with step electric machine 1 and carry out slowing down gear selecting reductor 2,
Main shaft 3, the shifting block 4 being sleeved on main shaft 3, gear shifting motor 5, output with gear shifting motor 5 are connected
Leading screw 6, the nut 7 being set on leading screw 6, be sleeved on main shaft 3 and coordinate with nut 7 transmission
Shift fork 8, the gear selection position sensor 9 that is arranged on gear selecting reductor 2 is connected with main shaft 3
Shift pattern sensor 10 and between gear selecting reductor 2 and gear shifting motor 5 and be coated with main shaft 3
Housing 11 and with gear selection position sensor 9, shift pattern sensor 10, step electric machine 1, change
The shelves ECU that is all electrically connected of motor 5, wherein gear selecting reductor 2 has parallel with main shaft 3 defeated
Go out translation shaft 20 and be arranged on output translation shaft 20 end and the gear selecting with shifting block 4 snap-fit engagement dial
Sheet 22；Shifting block 4 is provided with the annular groove 40 coordinated with gear selecting plectrum 22；Nut 7 both sides all have one
Individual columnar protrusions 70；Shift fork 8 has furcation 80 and is sleeved on the socket part 82 of main shaft 3；Bifurcated
Portion 80 has a pair bifurcated part set relatively, and columnar protrusions 70 is installed on corresponding bifurcated part respectively
On, and nut 7 is between bifurcated part, and comprise the steps:
S1: after ECU judges to need gearshift, ECU controls gear shifting motor 5, drives leading screw
6 and nut 7, and owing to nut 7 is provided with two columnar protrusions 70 being installed on furcation 80,
So nut 7 cannot rotate, can be only formed axial thrust, and by columnar protrusions 70 by axial thrust
Pass to shift fork 8, and on main shaft 3, form moment of torsion；And then drive shifting block 4 to rotate, then pass through gear shift
The position instruction of position sensor 10, first marches to the neutral position of change speed gear box；
S2: ECU judges whether to need to carry out gear selecting, the most then perform step S3, as no,
Then perform step S5；
S3: ECU controls step electric machine 1, drives gear selecting reductor 2, and then drives output translation
Axle 20 produces axial translation, snaps fits into shifting block 4 by the gear selecting plectrum 22 set in output translation shaft 20
In upper set annular groove 40, thus drive shifting block 4 translation on main shaft 3；
S4: indicated by the position of gear selection position sensor 9 again, arrives target gear selection position, it is achieved choosing
Shelves；
S5: ECU controls gear shifting motor 5, drives leading screw 6 and nut 7, and due on nut 7
It is provided with two columnar protrusions 70 being installed on furcation 80, so nut 7 cannot rotate, can only shape
Become axial thrust, and by columnar protrusions 70, axial thrust passed to shift fork 8, and on main shaft 3
Form moment of torsion；And then drive shifting block 4 to rotate；
S6: indicated by the position of shift pattern sensor 10 again, arrives target gear positions, it is achieved
Shift into end.
Certainly above-described embodiment is only for technology design and the feature of the explanation present invention, its object is to allow familiar
The people of technique will appreciate that present disclosure and implements according to this, can not limit the present invention's with this
Protection domain.All equivalent transformations done according to the spirit of main technical schemes of the present invention or modification,
All should contain within protection scope of the present invention.
Claims (3)
1. a vehicle speed variation auto-shifting device, it is characterised in that comprising: step electric machine (1) and choosing
Shelves motor (1) be connected and carry out slowing down gear selecting reductor (2), main shaft (3), be sleeved on main shaft (3)
Leading screw (6) that shifting block (4), gear shifting motor (5) are connected with the output of gear shifting motor (5), it is set in leading screw
(6) nut (7) on, be sleeved on main shaft (3) upper and coordinates with nut (7) transmission shift fork (8), setting
The shift pattern that gear selection position sensor (9) on gear selecting reductor (2) is connected with main shaft (3) passes
Sensor (10) and be positioned between gear selecting reductor (2) and gear shifting motor (5) and be coated with the shell of main shaft (3)
Body (11), wherein said gear selecting reductor (2) has output translation shaft (20) and is arranged on output translation
The gear selecting plectrum (22) of axle (20) end, and described shifting block (4) is provided with and joins with gear selecting plectrum (22) clamping
The annular groove (40) closed, all there is a columnar protrusions (70) wherein said nut (7) both sides, and dial
Fork (8) has the furcation (80) with columnar protrusions (70) card dress and is sleeved on the socket part of main shaft (3)
(82), described step electric machine (1) is fastened on gear selecting reductor (2), and gear selecting reductor (2) and gear shift
Motor (5) is all fastened on housing (11), and described main shaft (3) is fixing even by the bearing (30) being positioned at two ends
It is connected on housing (11).
A kind of vehicle speed variation auto-shifting device the most according to claim 1, it is characterised in that: it enters
One step includes the electricity being all electrically connected with described gear selection position sensor (9) and shift pattern sensor (10)
Control unit.
3. a vehicle speed variation fluid drive method, it is applied in vehicle speed variation auto-shifting device, its
Be characterised by comprising:
S1: after ECU judges to need gearshift, ECU controls gear shifting motor, drives leading screw and nut,
And axial thrust is passed to shift fork and on main shaft, forms moment of torsion to drive shifting block to rotate；Pass through gear shift again
The position instruction of position sensor, first marches to the neutral position of change speed gear box；
S2: judge whether to need to carry out gear selecting, the most then perform step S3, as no, then performs step S5；
S3: ECU controls step electric machine, drives gear selecting reductor, and then drives output translation shaft to produce axle
To translation, snap fits in annular groove set on shifting block by the gear selecting plectrum set in output translation shaft,
Thus drive shifting block translation on main shaft；
S4: indicated by the position of gear selection position sensor again, arrives target gear selection position, it is achieved gear selecting；
S5: ECU controls gear shifting motor, drives leading screw and nut, and axial thrust is passed to shift fork and
Main shaft is formed moment of torsion；And then drive shifting block to rotate；
S6: indicated by the position of shift pattern sensor again, arrives target gear positions, it is achieved shift into knot
Bundle；
Wherein said vehicle speed variation auto-shifting device includes that step electric machine (1) is connected also with step electric machine (1)
The gear selecting reductor (2) that carries out slowing down, main shaft (3), the shifting block (4) being sleeved on main shaft (3), gear shift electricity
The leading screw (6) that machine (5) is connected with the output of gear shifting motor (5), the nut (7) being set on leading screw (6),
Be sleeved on main shaft (3) upper and coordinate with nut (7) transmission shift fork (8), be arranged on gear selecting reductor (2)
On gear selection position sensor (9) be connected with main shaft (3) shift pattern sensor (10), Yi Jiwei
Between gear selecting reductor (2) and gear shifting motor (5) and be coated with the housing (11) of main shaft (3), described gear selecting
Reductor (2) has the output translation shaft (20) parallel with main shaft (3) and is arranged on output translation shaft
(20) end the gear selecting plectrum (22) with shifting block (4) snap-fit engagement；And described shifting block (4) is provided with and selects
The annular groove (40) that shelves plectrum (22) coordinate；All there is a columnar protrusions (70) described nut (7) both sides；
Described shift fork (8) has furcation (80) and is sleeved on the socket part (82) of main shaft (3)；Described furcation
(80) there is a pair bifurcated part set relatively, and columnar protrusions (70) is installed on corresponding bifurcated part respectively
On, and nut (7) is between bifurcated part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110362638.6A CN102384262B (en) | 2011-11-16 | Vehicle speed variation auto-shifting device and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110362638.6A CN102384262B (en) | 2011-11-16 | Vehicle speed variation auto-shifting device and method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102384262A CN102384262A (en) | 2012-03-21 |
| CN102384262B true CN102384262B (en) | 2016-12-14 |
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ID=
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|---|---|---|---|---|
| DE10045266C2 (en) * | 2000-09-13 | 2003-01-09 | Porsche Ag | Switching device for actuating a multi-stage manual transmission |
| DE102006017265A1 (en) * | 2005-04-13 | 2006-10-19 | Aktiebolaget Skf | Control device for switching of motor-driven vehicle comprises charging rod on which are charging devices each with selection finger and cam selection rod to switch device from active to passive state and back |
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