CN105240520A - Gear shifting system for multi-speed electric automobile transmission - Google Patents
Gear shifting system for multi-speed electric automobile transmission Download PDFInfo
- Publication number
- CN105240520A CN105240520A CN201510607917.2A CN201510607917A CN105240520A CN 105240520 A CN105240520 A CN 105240520A CN 201510607917 A CN201510607917 A CN 201510607917A CN 105240520 A CN105240520 A CN 105240520A
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- ball screw
- motor car
- transmission
- transmission system
- deep groove
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/32—Electric motors actuators or related electrical control means therefor
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
- Transmission Devices (AREA)
Abstract
The invention relates to an electric-control two-gear automatic gear shifting system used on an electric automobile and a hybrid power automobile. The system is mainly composed of a self-locking pin, a gear shifting fork, a driving motor, a key sleeve, a bearing, a ball screw, a ball screw nut, another bearing and a synchronizer. The driving motor directly drives a ball screw pair mechanism to move through the key sleeve and completes gear shifting in cooperation with the gear shifting fork and the synchronizer. The automatic gear shifting system is high in movement precision, short in gear shifting time, small in heating amount, long in service life, easy and convenient to maintain, higher in mechanical efficiency and lower in comprehensive cost.
Description
Technical field
Patent of the present invention relates to a kind of automatic transimission on automobile, more particularly, the present invention relates to a kind of electricity powered two be applied on electric vehicle and hybrid vehicle and keeps off automatic gear shifting system.
Background technique
At present, on electric vehicle, many assemblings is single-stage gearbox, single-stage gearbox can make motor be in transition point running for a long time, not only reduce the efficiency of Power output, also shorten the course continuation mileage of pure electric vehicle simultaneously, and multi speed transmission to compare the loss of single-stage gearbox to Power output less, the power output efficiency of motor can be promoted, improve electric vehicle starting efficiency greatly, and reasonably improve highest speed, if a rational multi speed transmission of ratio coverage can be mated, optimize the opportunity of motor power outburst, significantly will promote Economy, therefore multi speed transmission is more and more paid attention to by market.But multi speed transmission gear shifting structure is worm gear structure greatly in the market, Worm Wheel System is two between centers transmission campaign and the power at spatial intersecting, during work, worm screw is driving link, and worm gear teeth slides along the helicoid of worm screw and rolls, usual worm screw circles, turbine turns over a tooth, and its transmission efficiency and precision are all very low, and heating value is large, the flank of tooth is easy to wearing and tearing, and cost is high.
Summary of the invention
The present invention is directed to electric vehicle and the special two-gear automatic speed changing case of hybrid vehicle, provide a kind of electricity powered two and keep off automatic gear shifting system scheme, with solve gearshift precision and efficiency low, high in cost of production problem.
The technological scheme that patent of the present invention adopts is: two described gear automatic gear shifting systems are made up of ball screw, ball screw nut, deep groove ball bearing, self-lock pin, selector fork, synchronizer, direct current generator and ECU (Electrical Control Unit).
The beneficial effect of patent of the present invention is: 1. compared to worm gear structure (number of patent application: 201310593296.8), ball screw gear shifting structure is more simple, and sliding friction is become rolling friction by the ball in ball screw, decreases frictional force, generate heat little, improve mechanical efficiency.2. compared to worm gear structure, ball screw gear shifting structure axial rigidity is high, ball screw and ball screw nut gapless, no-idle running time reverse, and thus positioning precision is high, moves sensitiveer.3., compared to worm gear structure, the wearing and tearing of ball screw gear shifting structure are little, and the life-span is long, and safeguard simple and convenient, overall cost is lower.4. adopt direct current generator directly to drive ball screw vice mechanism, shifting system actuator is simplified, improves transmission efficiency and structural reliability, while improve control accuracy, shorten the gearshift time.
Accompanying drawing illustrates:
The structure of patent of the present invention is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is the tectonic maps of patent of the present invention.
In figure:
1. self-lock pin 2. selector fork 3. direct current generator 4. key overlaps 5. deep groove ball bearing 6. ball screw 7. ball screw nut 8. deep groove ball bearings, 9. synchronizer
Embodiment:
In FIG: direct current generator (3) main body and case of transmission are bolted to connection, the output shaft of direct current generator (3) is with one end of key to be connected by key cover (4) with ball screw (6), make the output shaft of direct current generator (3) and ball screw (6) coaxial line and diametrically fix, ball screw (6) one end axle and deep groove ball bearing (5) minor diameter fit, the other end axle and deep groove ball bearing (8) minor diameter fit, the hole secure fit at deep groove ball bearing (5) and deep groove ball bearing (8) external diameter and case of transmission two ends, make ball screw (6) be fixed on case of transmission two ends can only do radial rotating and axially cannot move, the rotary motion of such direct current generator (3) output shaft drives ball screw (6) to do synchronous rotary motion by key cover (4), ball screw (6) and ball screw nut (7) there is circular arc spiral chute respectively, just spiral rolling track is defined altogether, ball is had in raceway, when ball screw (6) counter ball feed screw nut (7) rotates, ball rolls in spiral rolling track, force ball screw (6) and ball screw nut (7) that axial relative movement occurs, selector fork (2) upper-end inner diameter and ball screw nut (7) major diameter fit, and be bolted to connection, when ECU (Electrical Control Unit) controls the rotation driving direct current generator (3), the output shaft of direct current generator (3) drives ball screw (6) to synchronously rotate by key cover (4), the convert rotational motion of ball screw (6) is become axial motion and drives selector fork (2) to axially move by ball screw nut (7), the bottom diameter of selector fork (2) coordinates with the synchronizer gear sleeve crest clearance of synchronizer (9) and moving left and right of overlapping of control synchro tooth, synchronizer gear sleeve coordinates both sides engaging tooth and realizes the switching of Transmission gear, self-lock pin (1) is threaded connection and is fixed on case of transmission, the steel ball inside, bottom of self-lock pin (1) coordinates with helical spring, by helical spring elastic force, steel ball is contacted to coordinate with the upper end W type groove of selector fork (2), prevent selector fork (2) from rotating along the axis of ball screw (6), the W type groove of selector fork (2) is applied to the rotating speed of direct current generator (3) by the size variation of axial force, torque, the changes such as electric current, after feeding back to ECU (Electrical Control Unit), the output shaft rotation that ECU (Electrical Control Unit) controls direct current generator (3) by reliable programmed algorithm makes gear rest on neutral gear accurately, one grade or two gears.
Claims (11)
1. multispeed motor car shift of transmission system, is characterized in that: comprise ball screw (6), ball screw nut (7), deep groove ball bearing (5) and deep groove ball bearing (8), self-lock pin (1), selector fork (2), synchronizer (9), direct current generator (3) and ECU (Electrical Control Unit) etc.
2. direct current generator (3) main body and case of transmission are bolted to connection, the output shaft of direct current generator (3) is with one end of key to be connected by key cover (4) with ball screw (6), deep groove ball bearing (5) and the internal diameter of deep groove ball bearing (8) and the major diameter fit at ball screw (6) two ends, the hole secure fit at external diameter and case of transmission two ends, selector fork (2) upper-end inner diameter and ball screw nut (7) one end major diameter fit, and be bolted, the bottom diameter of selector fork (2) and the synchronizer gear sleeve major diameter fit of synchronizer (9), self-lock pin (1) is threaded connection and is fixed on case of transmission, the bottom of self-lock pin (1) contacts with the top W type groove of selector fork (2) and coordinates, ECU (Electrical Control Unit) directly controls the output shaft rotation status of direct current generator (3), and then realize gear switch.
3. multispeed motor car shift of transmission system as claimed in claim 1, is characterized in that, adopt driven by Brush-Less DC motor, voltage is 12V to 24V.
4. multispeed motor car shift of transmission system as claimed in claim 1, is characterized in that, adopt ball screw (6) and ball screw nut (7) as shifting gears principal organ, kinematic accuracy is high, and mechanical efficiency is high.
5. multispeed motor car shift of transmission system as claimed in claim 1, it is characterized in that, ECU (Electrical Control Unit) directly controls the operating condition of direct current generator (3) output shaft.
6. multispeed motor car shift of transmission system as claimed in claim 1, it is characterized in that, ball screw (6) two ends have the axle of assembling deep groove ball bearing (5) and deep groove ball bearing (8) respectively, and one end has key to be used for connecting key cover (4).
7. multispeed motor car shift of transmission system as claimed in claim 1, it is characterized in that, ball screw (6) and direct current generator (3) output shaft adopt key cover (4) to be directly connected.
8. multispeed motor car shift of transmission system as claimed in claim 1, it is characterized in that, ball screw (6) two end axles, by deep groove ball bearing (5) and deep groove ball bearing (8) and case of transmission secure fit, makes ball screw (6) can only do radial rotation motion.
9. multispeed motor car shift of transmission system as claimed in claim 1, is characterized in that, ball screw nut (7) one end external diameter directly with selector fork (2) one end minor diameter fit, and be fixedly connected with bolt, drive reverse shift fork (2) moves axially.
10. multispeed motor car shift of transmission system as claimed in claim 1, it is characterized in that, reverse shift fork (2) upper end is W type groove structure, and lower end is semicircle and synchronizer (9) tooth overlaps Spielpassung.
11. multispeed motor car shift of transmission systems as claimed in claim 1, it is characterized in that, self-lock pin (1) is directly fixed on case of transmission, lower end and reverse shift fork (2) W type slot fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510607917.2A CN105240520A (en) | 2015-09-23 | 2015-09-23 | Gear shifting system for multi-speed electric automobile transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510607917.2A CN105240520A (en) | 2015-09-23 | 2015-09-23 | Gear shifting system for multi-speed electric automobile transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105240520A true CN105240520A (en) | 2016-01-13 |
Family
ID=55038288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510607917.2A Pending CN105240520A (en) | 2015-09-23 | 2015-09-23 | Gear shifting system for multi-speed electric automobile transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105240520A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697767A (en) * | 2016-02-24 | 2016-06-22 | 无锡正瑞汽车传动技术有限公司 | Electric control gear shifting device used for new-energy vehicle |
| CN107514457A (en) * | 2017-09-28 | 2017-12-26 | 山东绿图动力科技股份有限公司 | A kind of ball screw type gearshift used for electric vehicle |
| CN107654641A (en) * | 2017-10-14 | 2018-02-02 | 格特拉克（江西）传动系统有限公司 | A kind of parking-driving mechanism |
| CN108644371A (en) * | 2018-04-17 | 2018-10-12 | 浙江吉利汽车研究院有限公司 | A kind of parking gear shifting mechanism |
| CN109944938A (en) * | 2019-03-18 | 2019-06-28 | 西安法士特汽车传动有限公司 | A kind of automatic gear shift actuating mechanism |
| CN109996980A (en) * | 2016-12-21 | 2019-07-09 | 舍弗勒技术股份两合公司 | Shift actuator |
| CN110630736A (en) * | 2019-10-11 | 2019-12-31 | 山东理工大学 | Automobile transmission gear shifting device based on electric push rod manipulator |
| CN110762199A (en) * | 2019-10-16 | 2020-02-07 | 山东理工大学 | Planar motion gear shifting device of electric push rod transmission |
| CN113803424A (en) * | 2021-09-17 | 2021-12-17 | 哈尔滨东安汽车动力股份有限公司 | Auxiliary transmission and transmission method thereof |
Citations (6)
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| JP2013044406A (en) * | 2011-08-25 | 2013-03-04 | Nsk Ltd | Electric transmission and drive device for electric vehicle |
| CN103206529A (en) * | 2013-04-07 | 2013-07-17 | 无锡金田元丰科技股份有限公司 | Linear movement buffering type speed change control mechanism and automatic speed change device |
| CN103557316A (en) * | 2013-11-23 | 2014-02-05 | 合肥工业大学 | Screw-nut gear-shifting mechanism for automatic two-gear transmission of electric car |
| CN103912677A (en) * | 2013-01-09 | 2014-07-09 | 上海海能汽车电子有限公司 | Electric lead screw drive mechanism for automatic transmission |
| CN204420084U (en) * | 2014-12-23 | 2015-06-24 | 于军 | A kind of motor direct-drive formula gear-shifting actuating mechanism |
| CN205136572U (en) * | 2015-09-23 | 2016-04-06 | 杭州安驱汽车零部件有限公司 | Multispeed motor car derailleur shift system |
-
2015
- 2015-09-23 CN CN201510607917.2A patent/CN105240520A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013044406A (en) * | 2011-08-25 | 2013-03-04 | Nsk Ltd | Electric transmission and drive device for electric vehicle |
| CN103912677A (en) * | 2013-01-09 | 2014-07-09 | 上海海能汽车电子有限公司 | Electric lead screw drive mechanism for automatic transmission |
| CN103206529A (en) * | 2013-04-07 | 2013-07-17 | 无锡金田元丰科技股份有限公司 | Linear movement buffering type speed change control mechanism and automatic speed change device |
| CN103557316A (en) * | 2013-11-23 | 2014-02-05 | 合肥工业大学 | Screw-nut gear-shifting mechanism for automatic two-gear transmission of electric car |
| CN204420084U (en) * | 2014-12-23 | 2015-06-24 | 于军 | A kind of motor direct-drive formula gear-shifting actuating mechanism |
| CN205136572U (en) * | 2015-09-23 | 2016-04-06 | 杭州安驱汽车零部件有限公司 | Multispeed motor car derailleur shift system |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697767A (en) * | 2016-02-24 | 2016-06-22 | 无锡正瑞汽车传动技术有限公司 | Electric control gear shifting device used for new-energy vehicle |
| CN109996980A (en) * | 2016-12-21 | 2019-07-09 | 舍弗勒技术股份两合公司 | Shift actuator |
| US11248700B2 (en) | 2016-12-21 | 2022-02-15 | Schaeffler Technologies AG & Co. KG | Shifting actuator |
| CN107514457A (en) * | 2017-09-28 | 2017-12-26 | 山东绿图动力科技股份有限公司 | A kind of ball screw type gearshift used for electric vehicle |
| CN107654641A (en) * | 2017-10-14 | 2018-02-02 | 格特拉克（江西）传动系统有限公司 | A kind of parking-driving mechanism |
| CN108644371A (en) * | 2018-04-17 | 2018-10-12 | 浙江吉利汽车研究院有限公司 | A kind of parking gear shifting mechanism |
| CN109944938A (en) * | 2019-03-18 | 2019-06-28 | 西安法士特汽车传动有限公司 | A kind of automatic gear shift actuating mechanism |
| CN110630736A (en) * | 2019-10-11 | 2019-12-31 | 山东理工大学 | Automobile transmission gear shifting device based on electric push rod manipulator |
| CN110762199A (en) * | 2019-10-16 | 2020-02-07 | 山东理工大学 | Planar motion gear shifting device of electric push rod transmission |
| CN113803424A (en) * | 2021-09-17 | 2021-12-17 | 哈尔滨东安汽车动力股份有限公司 | Auxiliary transmission and transmission method thereof |
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Application publication date: 20160113 |
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| WD01 | Invention patent application deemed withdrawn after publication |