CN207975239U - Novel electric drives gearshift - Google Patents
Novel electric drives gearshift Download PDFInfo
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- CN207975239U CN207975239U CN201820281996.1U CN201820281996U CN207975239U CN 207975239 U CN207975239 U CN 207975239U CN 201820281996 U CN201820281996 U CN 201820281996U CN 207975239 U CN207975239 U CN 207975239U
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- 239000003638 reducing agent Substances 0.000 claims abstract description 27
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 238000005096 rolling process Methods 0.000 claims abstract description 6
- 230000000875 corresponding Effects 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 230000001264 neutralization Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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Abstract
The utility model discloses a kind of Novel electric drive gearshift, ECU and Hall sensor are provided on motor, it is connected with planetary speed reducer with small tooth number difference on the output shaft of motor, leading screw is sequentially connected with planetary speed reducer with small tooth number difference and the both ends of leading screw are positioned at by rolling or sliding bearing on case of transmission, nut is driven with leading screw by slip screw, guiding axis is fixed on case of transmission, shift fork is fixedly connected with or is made of one structure with nut and coordinates with guiding axis simultaneously so that shift fork moves linearly along guiding axis, and guiding axis is parallel with leading screw.Using planetary speed reducer with small tooth number difference, primary speed-down can reach larger speed ratio, meet gear shifting force demand, transmission efficiency is small；Feed screw nut becomes rotary motion to move along a straight line, and movement conversion accuracy is high, and realizes reverse self-locking, effectively prevent off-gear；Motor is integrated with ECU, compact-sized, can feed back motor rotor position and shift fork position simultaneously with Hall sensor, eliminate traditional shift sensor.
Description
Technical field
The utility model is related to Technology of Automatic Transmission for vehicle fields, and gearshift is driven more particularly to a kind of Novel electric.
Background technology
With the development and popularization of new-energy automobile technology, two-speed automatic transmission applies more and more, this kind of speed changer
Only need the switching of realization low gear, high gear, neutral gear, it is desirable that gearshift response is rapid, simple in structure, reliable operation.Traditional
AMT, DCT speed changer are due to that will convert more gear, and usually using gear shift mechanism, this kind of mechanism is more complicated, be not suitable for
In two-gear transmission.
Current two-speed automatic transmission is usually using fluid pressure type and mechanism of electromechanical shifter.Fluid pressure type gearshift passes through
Hydraulic Cylinder shift fork realizes shift, but hydraulic system is more complicated and of high cost.Mechanism of electromechanical shifter is usually using electricity
Machine driving, worm and gear or multiple stage gear reduction, cam mechanism or reversal means device realize conversion of the rotary motion to linear motion,
To realize gearshift function, this kind of gearshift number of parts is more, complicated, assembly is difficult.
Utility model content
The utility model is in view of the problems of the existing technology and insufficient, provides a kind of Novel electric drive gearshift, has
It executes high, compact-sized, the easy assembly of precision, respond sensitive, reliable operation technical advantage.
The utility model is to solve above-mentioned technical problem by following technical proposals：
The utility model provides a kind of Novel electric drive gearshift, and feature is comprising a motor, a few teeth difference row
Star retarder, a nut, a leading screw, a guiding axis, a shift fork and a case of transmission are provided with ECU and Hall on the motor
Sensor is connected with the planetary speed reducer with small tooth number difference on the output shaft of the motor, which passes with the planetary speed reducer with small tooth number difference
The both ends of dynamic connection and the leading screw are positioned at by rolling or sliding bearing on the case of transmission, which passes through with the leading screw
Slip screw is driven, which is fixed on the case of transmission, which is fixedly connected with or is made of one knot with the nut
Structure coordinates simultaneously with the guiding axis so that the shift fork moves linearly along the guiding axis, and the guiding axis is parallel with the leading screw.
Preferably, the planetary speed reducer with small tooth number difference include eccentric shaft, balance weight, planetary gear, ring gear, reducer shell and
Output device, one end of the eccentric shaft are sequentially connected or are made of one with the output shaft of the motor, which is fixed on this partially
In mandrel, which is positioned at by bearing on the other end of the eccentric shaft, which is fixed on the reducer shell,
The planetary gear and the ring gear are meshed, which is driven with planetary gear cooperation and is positioned at the retarder by bearing
On shell.
Preferably, the output device is pin type output mechanism, which is included in the planetary gear upper edge
The pin hole of N number of a diameter of d, output shaft disk are evenly equipped on the circumference of diameter D, the diametrically circumference of D on the output shaft disk
On be evenly equipped with the guide for being cased with that outer diameter is ds on the axis pin and each axis pin of N number of a diameter of d ', those pin holes and those axis pins
It corresponds, is respectively inserted in corresponding pin hole with the axis pin of the guide.
Preferably, the output device is floating disc type output mechanism, which includes two fixed pins, floats
Disk and output shaft, two fixed pins are mounted on the planetary gear, and also there are two straight pin, the floating discs for arrangement on the output shaft
On open there are four groove respectively on two fixed pins and the output shaft two straight pins cooperation.
Preferably, guide is arranged between the fixed pin and corresponding groove, also set between the straight pin and corresponding groove
Set guide.
Preferably, the output device is cross slider type output mechanism, which includes that input is justified
Disk, floating disk and output disk, respectively there are one rectangular boss for the floating disk both sides, and the rectangular boss of both sides is orthogonal,
And by the center of the floating disk, two rectangular boss on the floating disk are respectively embedded into the input disk and output circle
In the groove of disk.
On the basis of common knowledge of the art, above-mentioned each optimum condition, can arbitrarily combine to get the utility model respectively compared with
Good example.
The positive effect of the utility model is：
(1) planetary speed reducer with small tooth number difference, primary speed-down is used to can reach larger speed ratio, meet gear shifting force demand, and
It is transmission efficiency, small.
(2) rotary motion is changed into linear motion using feed screw nut, movement conversion accuracy is high, and passes through helical angle
Design realize reverse self-locking (linear motion of nut can not be changed into the rotary motion of leading screw), off-gear can be effectively prevent, province
Traditional lock catch device is removed.
(3) use motor and controller collection integral, it is compact-sized, versatile, and carrying Hall sensor can be with
Motor rotor position and shift fork position are fed back simultaneously, eliminates traditional shift sensor.
(4) it uses motor highly integrated with planetary speed reducer with small tooth number difference, eliminates electric motor end cap and reducer shell end cap,
It effectively shortens axial length, realizes the technique effect compact-sized, space is small, power density is high.
Description of the drawings
Fig. 1 is that the Novel electric of the utility model preferred embodiment drives the structural schematic diagram of gearshift.
Fig. 2 is that the Novel electric of the utility model preferred embodiment drives the control principle drawing of gearshift.
Fig. 3 is the structural schematic diagram of the pin type output mechanism of the utility model preferred embodiment.
Fig. 4 is the structural schematic diagram of the floating disc type output mechanism of the utility model preferred embodiment.
Fig. 5 is the structural schematic diagram of the cross slider type output mechanism of the utility model preferred embodiment.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained without making creative work all belong to
In the range of the utility model protection.
As shown in Figure 1, the present embodiment provides a kind of Novel electrics to drive gearshift comprising a motor 2, a fewer differential teeth planetary
Retarder, a nut 6, a leading screw 7, a guiding axis 8, a shift fork 9 and a case of transmission 10 connect on the output shaft of the motor 2
It is connected to the planetary speed reducer with small tooth number difference, which is sequentially connected with the planetary speed reducer with small tooth number difference and the both ends of the leading screw 7 pass through
It rolls or sliding bearing is positioned on the case of transmission 10, which is driven with the leading screw 7 by slip screw, the guiding
Axis 8 is fixed on the case of transmission 10, the shift fork 9 and the nut 6 be fixedly connected or be made of one structure simultaneously with the guiding
Axis 8 coordinates so that the shift fork 9 moves linearly along the guiding axis 8, and the guiding axis 8 is parallel with the leading screw 7.
As shown in Figure 1, the planetary speed reducer with small tooth number difference includes eccentric shaft 13, balance weight 12, planetary gear 11, ring gear 4, subtracts
Fast device shell 3 and output device 5, one end of the eccentric shaft 13 and the output shaft of the motor 2 are sequentially connected or are made of one, this is flat
Weighing apparatus block 12 is fixed on the eccentric shaft 13, which is positioned at by bearing on the other end of the eccentric shaft 13, the internal tooth
Circle 4 is fixed on the reducer shell 3, and the planetary gear 11 and the ring gear 4 are meshed, the output device 5 and the planetary gear 11
Cooperation is driven and is positioned on the reducer shell 3 by bearing.In fact, realizing that sliding or rolling are matched by geometry designs
It closes, to which the rotation of planetary gear to be transmitted on output device；The rotation of planetary gear be it is eccentric, the purpose of output device be by
Eccentricity is eliminated, to realize that dead axle exports.
Wherein, output device 5 can be pin type output mechanism, floating disc type output mechanism, cross slider type output mechanism.
The little tooth difference speed reducer is compact-sized, transmission efficiency, and primary speed-down can reach larger speed ratio, completes reduction of speed torque and makees
With.
As shown in Figure 1, being provided with ECU (shift motor controller) 1 and Hall sensor 14 on motor 2；ECU 1 can drive
Dynamic motor rotates forward, inverts, stops operating, and the shift for receiving host controller is asked, the gear of feedback monitoring to upper control
Device；Hall sensor 14 can monitor the position of output axle of motor 2 in real time, and obtain the position of shift fork by conversion.
As shown in Figure 1, shift fork 9 is fixedly connected with or is made of one structure with nut 6, while coordinating with guiding axis 8, to limit
The circumferencial direction degree of freedom of nut 6 is made；7 both ends of leading screw are positioned at by rolling or sliding bearing on case of transmission 10, and
Limit the axial freedom of leading screw.
As shown in Figure 1, the worm drive of leading screw 7 and nut 6, are accurately converted to rotary motion linear motion, and
And the angle that leading screw 7 rotates is linearly related with the linear movement distance of nut 6, is beneficial to the ride comfort of shift；Pass through helical angle
Reverse self-locking may be implemented in adjustment, i.e. the rotation of leading screw 7 can drive nut 6 to move linearly, and the linear movement of nut 6 cannot
It is converted into the rotary motion of leading screw 7, this self-locking function can effectively prevent out of supply.
As shown in Fig. 2, host controller sends shifting commands to shift motor controller 1, shift motor controller 1 drives
Motor 2 acts, and little tooth difference speed reducer device completes the effect of reduction of speed torque, and rotary motion is converted to the straight of nut 6 by 7 nut 6 of leading screw
Line moves, since shift fork 9 is fixedly connected with nut 6, so shift fork 9 follows 6 synchronizing moving of nut.Hall sensor 14 can be real
When monitor the rotating speed of 2 rotor of motor, and the angle that turns over is recorded, so as to calculate the rotating speed of few teeth difference output shaft and turn over
Angle, nut 6 and shift fork 9 speed and distance that move.These information are fed back to shift motor control by Hall sensor 14
Device 1 reaches higher control accuracy to realize closed-loop control.
As shown in figure 3, the pin type output mechanism, N number of diameter diametrically is evenly equipped on the circumference of D on planetary gear 11
For the pin hole of d, the axis pin 16 of N number of a diameter of d ' is diametrically evenly equipped on the circumference of D on output shaft disk 15, is cased on axis pin
Outer diameter is the guide 17 of ds, is respectively inserted in N number of pin hole of planetary gear with the axis pin 16 of guide 17.Little tooth difference speed reducer it is inclined
The eccentricity of mandrel is a, as d=ds+2a, it is ensured that guide 17 is kept in contact with pin hole to passing power.
As shown in figure 4, the floating disc output mechanism, including fixed pin 18, floating disc 19, output shaft 20；Two solid
Rationed marketing 18 is mounted on planetary gear 11, and also arrangement opens that there are four grooves there are two straight pin 21 on floating disc on output shaft 20
Coordinate respectively with the circumference pin 21 on fixed pin 18 and output shaft 20.When output mechanism operates, four pins are in floating disc 19
Groove in slide；As an optimization, guide 22 can be set between pin and groove, rolling is changed into sliding friction and is rubbed
It wipes, reduces friction loss.
As shown in figure 5, the cross slider type output mechanism, including input disk 23, floating disk 24, output disk
25；Respectively there are one rectangular boss for 24 both sides of floating disk, and the boss of both sides is orthogonal, and passes through the center of floating disk 24；
Two boss on floating disk 24 are respectively embedded into the groove of input disk 23 and output disk 25；When output mechanism operates
When, floating disk 24 slides in the groove of input disk 23 and output disk 25.
The course of work of the gearshift is：When ECU 1 is connected to the shifting commands of host controller, driving motor 2
Forward or reverse, eccentric shaft 13 and the output shaft synchronous of motor 2 rotate；Little tooth difference speed reducer completes the effect of reduction of speed torque, and leads to
Crossing output device 5 drives leading screw 7 to rotate；Nut 6 is since the limitation of shift fork 9 can not rotate, to move linearly along leading screw 7；It dials
Fork 7 moves linearly, to realize gear shifting action under the promotion of nut 6 along guiding axis 8.
In shift process, Hall sensor 14 monitors the output shaft turned position of motor 2 in real time, is dialled by conversion
The position of fork, when shift fork is moved to specified gear, controller 1 controls motor 2 and stops operating.It is reversed due to feed screw nut
Self-locking, after motor 2 stops operating, what shift fork can consolidate rests on designated position and the influence that is not hit.
Although the foregoing describe specific embodiment of the present utility model, it will be appreciated by those of skill in the art that
These are merely examples, and the scope of protection of the utility model is defined by the appended claims.Those skilled in the art
Member can make these embodiments numerous variations or repair under the premise of without departing substantially from the principles of the present invention and essence
Change, but these change and modification each fall within the scope of protection of the utility model.
Claims (6)
1. a kind of Novel electric drives gearshift, which is characterized in that it includes a motor, a planetary speed reducer with small tooth number difference, a deceleration
Device shell, a nut, a leading screw, a guiding axis, a shift fork and a case of transmission, ECU is provided on the motor and Hall passes
Sensor is connected with the planetary speed reducer with small tooth number difference on the output shaft of the motor, which is driven with the planetary speed reducer with small tooth number difference
The both ends of connection and the leading screw are positioned at by rolling or sliding bearing on the case of transmission, which passes through cunning with the leading screw
Dynamic worm drive, the guiding axis are fixed on the case of transmission, which is fixedly connected with or is made of one structure with the nut
Coordinate with the guiding axis simultaneously so that the shift fork moves linearly along the guiding axis, the guiding axis is parallel with the leading screw.
2. Novel electric as described in claim 1 drives gearshift, which is characterized in that the planetary speed reducer with small tooth number difference includes bias
Axis, balance weight, planetary gear, ring gear, reducer shell and output device, one end of the eccentric shaft are passed with the output shaft of the motor
Dynamic connection is made of one, which is fixed on the eccentric shaft, which is positioned at the another of the eccentric shaft by bearing
On one end, which is fixed on the reducer shell, and the planetary gear and the ring gear are meshed, the output device and the row
Meshing engagement is driven and is positioned on the reducer shell by bearing.
3. Novel electric as claimed in claim 2 drives gearshift, which is characterized in that the output device is that pin type exports machine
Structure, the pin type output mechanism include the pin hole for being diametrically evenly equipped with N number of a diameter of d on the circumference of D on the planetary gear, output
Axis disk is diametrically evenly equipped on axis pin and each axis pin of N number of a diameter of d ' on the circumference of D on the output shaft disk
It is cased with the guide that outer diameter is ds, those pin holes and those axis pins correspond, and correspondence is respectively inserted in the axis pin of the guide
Pin hole in.
4. Novel electric as claimed in claim 2 drives gearshift, which is characterized in that the output device is floating mould core machine
Structure, the floating disc type output mechanism include two fixed pins, floating disc and output shaft, which is mounted on the planetary gear
On, on the output shaft also arrangement there are two straight pin, opened on the floating disc there are four groove respectively with two fixed pins and this
Two straight pins cooperation on output shaft.
5. Novel electric as claimed in claim 4 drives gearshift, which is characterized in that set between the fixed pin and corresponding groove
Guide is set, guide is also provided between the straight pin and corresponding groove.
6. Novel electric as claimed in claim 2 drives gearshift, which is characterized in that the output device exports for cross slider type
Mechanism, which, which includes input disk, floating disk and output disk, the floating disk both sides, respectively one
The rectangular boss of a rectangular boss, both sides is orthogonal, and by the center of the floating disk, two squares on the floating disk
Shape boss is respectively embedded into the groove of the input disk and the output disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820281996.1U CN207975239U (en) | 2018-02-28 | 2018-02-28 | Novel electric drives gearshift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820281996.1U CN207975239U (en) | 2018-02-28 | 2018-02-28 | Novel electric drives gearshift |
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| Publication Number | Publication Date |
|---|---|
| CN207975239U true CN207975239U (en) | 2018-10-16 |
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ID=63767997
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820281996.1U Active CN207975239U (en) | 2018-02-28 | 2018-02-28 | Novel electric drives gearshift |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163088A (en) * | 2018-10-29 | 2019-01-08 | 宁波上中下自动变速器有限公司 | A kind of speed changer is electronic to select gear change system and automobile |
-
2018
- 2018-02-28 CN CN201820281996.1U patent/CN207975239U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163088A (en) * | 2018-10-29 | 2019-01-08 | 宁波上中下自动变速器有限公司 | A kind of speed changer is electronic to select gear change system and automobile |
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