CN114738475A - Gear shifting executing device for electric automobile - Google Patents

Gear shifting executing device for electric automobile Download PDF

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Publication number
CN114738475A
CN114738475A CN202210226750.5A CN202210226750A CN114738475A CN 114738475 A CN114738475 A CN 114738475A CN 202210226750 A CN202210226750 A CN 202210226750A CN 114738475 A CN114738475 A CN 114738475A
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China
Prior art keywords
shift
gear shifting
seat
screw rod
finger
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Pending
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CN202210226750.5A
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Chinese (zh)
Inventor
张兰春
曹顺顺
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Jiangsu University of Technology
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Jiangsu University of Technology
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Priority to CN202210226750.5A priority Critical patent/CN114738475A/en
Publication of CN114738475A publication Critical patent/CN114738475A/en
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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
    • F16H59/00—Control inputs to control units of change-speed- or reversing-gearings for conveying rotary motion
    • F16H59/02—Selector apparatus
    • 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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/304—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by electrical or magnetic force
    • 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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/304—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by electrical or magnetic force
    • F16H2063/3063—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by electrical or magnetic force using screw devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear-Shifting Mechanisms (AREA)

Abstract

本发明公开了一种电动汽车用换挡执行装置，包括换挡座以及固定于换挡座一端的换挡电机；所述换挡座内部转动安装有与换挡电机的输出轴传动连接的换挡丝杆；所述换挡丝杆上螺纹连接有驱动块；所述换挡座上还转动连接有垂直于换挡丝杆的换挡轴；所述换挡轴上固定有与驱动块传动连接的换挡拨指。本发明采用换挡电机驱动驱动块运动，从而带着换挡拨指摆动进行换挡，无需液压装置、空间占用小、换挡时间短、传动效率高、成本低、安装简单具有良好的环境适应力，能够适用于大多数纯电动汽车。

Figure 202210226750

The invention discloses a shift execution device for an electric vehicle, comprising a shift seat and a shift motor fixed at one end of the shift seat; a shifter connected to an output shaft of the shift motor is rotatably mounted inside the shift seat. A shift screw rod; a drive block is threadedly connected to the shift screw rod; a shift shaft perpendicular to the shift screw rod is also rotatably connected to the shift seat; the shift shaft is fixed with a drive block for transmission Connected shift fingers. The invention adopts the shifting motor to drive the drive block to move, so as to shift the shifting finger with the shifting finger swing, without the need for hydraulic devices, small space occupation, short shifting time, high transmission efficiency, low cost, simple installation, and good environmental adaptability It can be applied to most pure electric vehicles.

Figure 202210226750

Description

Gear shifting executing device for electric automobile
Technical Field
The invention relates to the technical field of electric automobiles, in particular to a gear shifting execution device for an electric automobile.
Background
In order to cope with the continuously increasing problems of environmental pollution and energy shortage, government departments set out a series of policies encouraging the development of new energy vehicles. The most new energy automobiles in the market at present are pure electric automobiles, and in order to improve the dynamic property of future automobiles, reduce the power of automobile motors and promote energy conservation and emission reduction, the transmission matched with the pure electric automobiles is also rapidly developed. The existing gear shifting actuating mechanisms of the AMT are divided into an electric control pneumatic type, an electric control hydraulic type and an electric control electrodynamic type. The electro-pneumatic shifting actuator has the disadvantage of being bulky. The electric control hydraulic gear shifting actuating mechanism has the defects of high cost and difficult installation and maintenance. For pure electric vehicles, the gear shifting actuating mechanism most suitable for the pure electric vehicles is an electric control electrodynamic type gear shifting actuating mechanism in consideration of the volume and economic factors. At present, the existing electric control electric AMT gear shifting actuating mechanism applied to more pure electric vehicles has the following defects:
1. the gear shifting actuating mechanism has large volume, more parts, complex mechanism, difficult installation and low transmission efficiency;
2. shift position deviation can occur when the shift actuating mechanism performs shift operation;
3. the shift actuating mechanism has short service life, poor fatigue resistance and easy damage.
Therefore, it is necessary to design a gear shift actuating device for an electric vehicle to solve the above problems.
Disclosure of Invention
The invention aims to provide a gear shifting execution device for an electric automobile, aiming at the defects in the prior art.
The technical scheme for realizing the purpose of the invention is as follows: a gear shifting execution device for an electric automobile comprises a gear shifting seat and a gear shifting motor fixed at one end of the gear shifting seat; a gear shifting screw rod in transmission connection with an output shaft of a gear shifting motor is rotatably arranged in the gear shifting seat; the gear shifting screw rod is in threaded connection with a driving block; the gear shifting base is also rotatably connected with a gear shifting shaft perpendicular to the gear shifting screw rod; and a gear shifting finger in transmission connection with the driving block is fixed on the gear shifting shaft.
One end of the gear shifting shaft extends out of the gear shifting seat, and an angle sensor is fixed at one end of the gear shifting shaft extending out of the gear shifting seat.
One end of the gear shifting finger is arranged in an arc shape; one side of the driving block is in a rack shape; convex teeth meshed with one side of the rack-shaped driving block are uniformly distributed on the arc-shaped surface of the gear shifting finger.
And one end of the gear shifting finger, which is far away from the driving block, is provided with a connecting end head connected with a gear shifting groove of the gearbox.
And concave arc-shaped grooves are formed between the two side walls of the connecting end and the two side walls of the gear shifting finger.
The gear shifting screw rod is a 16-B42 gear shifting screw rod.
The gear shifting motor is a 24V direct current brush motor.
By adopting the technical scheme, the invention has the following beneficial effects: (1) the gear shifting motor is adopted to drive the driving block to move, so that the gear shifting finger is driven to swing to shift gears, a hydraulic device is not needed, the occupied space is small, the gear shifting time is short, the transmission efficiency is high, the cost is low, the installation is simple, the environment adaptability is good, and the gear shifting motor can be suitable for most pure electric vehicles.
(2) The gear shifting device is provided with the angle sensor, the gear shifting angle is detected, the detection precision is high, feedback can be better carried out, and the reliability and the accuracy of gear shifting are better ensured.
(3) The driving block and the gear shifting finger are driven in a mode that the rack is meshed with the convex teeth, and the problems of shift position deviation and short service life of a gear shifting part can be effectively solved.
(4) The gear shifting finger is provided with the connecting end head so as to be convenient for connecting the gear shifting finger with the gearbox.
(5) The concave arc-shaped grooves are formed between the two side walls of the connecting end and the two side walls of the gear shifting fingers, so that the gear shifting fingers can be matched with the gear shifting grooves of the gearbox more conveniently, and the arc-shaped grooves can play a role in positioning and limiting.
(6) The whole gear-shifting actuating mechanism adopts the screw rod transmission driving block, and the driving block and the gear-shifting fingers adopt a gear-rack transmission mode, so that the size of the gear-shifting actuating mechanism is reduced, the number of parts is reduced, and the stability of transmitted force can be improved.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the present disclosure taken in conjunction with the accompanying drawings, in which
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the transmission of the present invention after the transmission is driven.
The reference numbers in the drawings are:
the gear shifting device comprises a gear shifting base 1, a gear shifting motor 2, a gear shifting screw rod 3, a driving block 4, a gear shifting shaft 5, a gear shifting finger 6, a connecting end 6-1, an arc-shaped groove 6-2 and an angle sensor 7.
Detailed Description
(example 1)
Referring to fig. 1 and 2, the shift actuating device for an electric vehicle of the present embodiment includes a shift base 1 and a shift motor 2 fixed to one end of the shift base 1; a gear shifting screw rod 3 in transmission connection with an output shaft of a gear shifting motor 2 is rotatably arranged in the gear shifting seat 1; the gear shifting screw rod 3 is in threaded connection with a driving block 4; the gear shifting base 1 is also rotatably connected with a gear shifting shaft 5 which is vertical to the gear shifting screw rod 3; and a gear shifting finger 6 in transmission connection with the driving block 4 is fixed on the gear shifting shaft 5.
Furthermore, one end of the gear shifting shaft 5 extends out of the gear shifting base 1, and an angle sensor 7 is fixed at one end of the gear shifting shaft 5 extending out of the gear shifting base 1, so that a gear shifting signal is fed back to the vehicle control unit.
Furthermore, one end of the gear shifting finger 6 is arranged in an arc shape; one side of the driving block 4 is in a rack shape; the gear shifting finger 6 is uniformly distributed with convex teeth meshed with one side of the rack-shaped driving block 4 on the arc-shaped surface, and a gear and rack meshing mode is adopted, so that the transmission stability is high, the whole structure of the gear shifting finger can be simplified, and the whole volume of the gear shifting finger is reduced.
Furthermore, in order to facilitate the connection between the gear shifting finger 6 and the gearbox, a connecting end 6-1 connected with a gear shifting groove of the gearbox is arranged at one end of the gear shifting finger 6, which is far away from the driving block 4.
Furthermore, an inwards concave arc-shaped groove 6-2 is formed between two side walls of the connecting end 6-1 and two side walls of the gear shifting finger 6, and the arc-shaped groove 6-2 can play a role in positioning and limiting, so that the gear shifting finger 6 is more conveniently and stably connected with a gear shifting groove of a gearbox.
Preferably, the shift screw rod 3 is a 16-B42 shift screw rod 3, so that the quality is more reliable, and the transmission is more stable.
Preferably, the gear shifting motor 2 is a 24V dc brush motor, which not only can provide sufficient driving force, but also has low use cost.
The working principle of the invention is as follows: when a gear shifting operation is carried out, the vehicle control unit changes the rotating speed of the gear shifting motor 2 by adjusting the duty ratio of the gear shifting motor 2, the gear shifting motor 2 transmits power to the gear shifting screw rod 3, the gear shifting screw rod 3 rotates in the gear shifting seat 1 to drive the driving block 4 to linearly move on the gear shifting screw rod 3, meanwhile, one side wall rack of the rack-shaped driving block 4 is meshed with the convex teeth at the arc end of the gear shifting finger 6 to drive the gear shifting finger 6 to swing on the gear shifting shaft 5, the other end of the gear shifting finger 6 drives the gear shifting groove of the gearbox to swing, meanwhile, the gear shifting shaft 5 drives the internal elements of the angle sensor 7 to rotate, the angle sensor 7 transmits an angle change signal to the vehicle control unit and generates a real-time gear signal, when the gear shifting finger 6 successfully reaches a target position, the angle sensor 7 feeds back a signal to the vehicle control unit, and the vehicle control unit sends a command to control the gear shifting motor 2 to stop working, the shift is completed.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1.一种电动汽车用换挡执行装置，其特征在于：包括换挡座(1)以及固定于换挡座(1)一端的换挡电机(2)；所述换挡座(1)内部转动安装有与换挡电机(2)的输出轴传动连接的换挡丝杆(3)；所述换挡丝杆(3)上螺纹连接有驱动块(4)；所述换挡座(1)上还转动连接有垂直于换挡丝杆(3)的换挡轴(5)；所述换挡轴(5)上固定有与驱动块(4)传动连接的换挡拨指(6)。1. A shift actuator for an electric vehicle, characterized in that it comprises a shift seat (1) and a shift motor (2) fixed at one end of the shift seat (1); the interior of the shift seat (1) A shift screw rod (3) that is drive-connected to the output shaft of the shift motor (2) is rotatably installed; a drive block (4) is threadedly connected to the shift screw rod (3); the shift seat (1) ) is also rotatably connected with a shift shaft (5) perpendicular to the shift screw rod (3); the shift shaft (5) is fixed with a shift finger (6) that is drive-connected with the drive block (4). . 2.根据权利要求1所述的一种电动汽车用换挡执行装置，其特征在于：所述换挡轴(5)的一端伸出换挡座(1)外，并且换挡轴(5)伸出换挡座(1)外的一端上固定有角度传感器(7)。2 . A shift actuator for electric vehicles according to claim 1 , wherein one end of the shift shaft ( 5 ) extends out of the shift seat ( 1 ), and the shift shaft ( 5 ) extends out of the shift seat ( 1 ). An angle sensor (7) is fixed on one end extending out of the shift seat (1). 3.根据权利要求1所述的一种电动汽车用换挡执行装置，其特征在于：所述换挡拨指(6)一端设置呈弧形；所述驱动块(4)的一侧呈齿条状；所述换挡拨指(6)的弧形面上均布有与驱动块(4)呈齿条状的一侧啮合的凸齿。3 . The gear shift execution device for electric vehicles according to claim 1 , wherein one end of the shift finger ( 6 ) is arranged in an arc shape; one side of the drive block ( 4 ) is a toothed Strip-shaped; convex teeth meshing with the rack-shaped side of the drive block (4) are evenly distributed on the arc surface of the shift finger (6). 4.根据权利要求3所述的一种电动汽车用换挡执行装置，其特征在于：所述换挡拨指(6)远离驱动块(4)的一端设有与变速箱换挡槽相连的连接端头(6-1)。4 . The gear shift execution device for electric vehicles according to claim 3 , wherein the end of the shift finger ( 6 ) away from the drive block ( 4 ) is provided with a gear shift groove connected to the gear shift groove. 5 . Connect the terminal (6-1). 5.根据权利要求4所述的一种电动汽车用换挡执行装置，其特征在于：所述连接端头(6-1)的两侧壁与换挡拨指(6)的两侧壁之间形成内凹的弧形槽(6-2)。5. A shift actuator for an electric vehicle according to claim 4, characterized in that: the two side walls of the connecting end (6-1) and the two side walls of the shift finger (6) are between A concave arc-shaped groove (6-2) is formed between them. 6.根据权利要求1所述的一种电动汽车用换挡执行装置，其特征在于：所述换挡丝杆(3)为16-B42换挡丝杆(3)。6 . The gear shift execution device for an electric vehicle according to claim 1 , wherein the shift screw rod ( 3 ) is a 16-B42 shift screw rod ( 3 ). 7 . 7.根据权利要求1所述的一种电动汽车用换挡执行装置，其特征在于：所述换挡电机(2)为为24V直流有刷电机。7 . The gear shift execution device for an electric vehicle according to claim 1 , wherein the gear shift motor ( 2 ) is a 24V DC brush motor. 8 .
CN202210226750.5A 2022-03-09 2022-03-09 Gear shifting executing device for electric automobile Pending CN114738475A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115586017A (en) * 2022-09-01 2023-01-10 东风汽车集团股份有限公司 Gear shifting test device and method for vehicle synchronizer gear shifting system

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CN211039640U (en) * 2019-08-19 2020-07-17 武汉理工通宇新源动力有限公司 Two-gear transmission gear shifting actuating mechanism and transmission
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115586017A (en) * 2022-09-01 2023-01-10 东风汽车集团股份有限公司 Gear shifting test device and method for vehicle synchronizer gear shifting system
CN115586017B (en) * 2022-09-01 2026-02-10 东风汽车集团股份有限公司 Test apparatus and method for vehicle synchronizer shifting system

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Application publication date: 20220712