CN113606328B - Electronic gear shifting mechanism assembly, gear shifting hand feeling selection method and system - Google Patents

Electronic gear shifting mechanism assembly, gear shifting hand feeling selection method and system Download PDF

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Publication number
CN113606328B
CN113606328B CN202110859348.6A CN202110859348A CN113606328B CN 113606328 B CN113606328 B CN 113606328B CN 202110859348 A CN202110859348 A CN 202110859348A CN 113606328 B CN113606328 B CN 113606328B
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Prior art keywords
gear
gear shifting
motor
lever
hand feeling
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CN113606328A (en
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张雷博
付斌
陈子轩
曹景华
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Lantu Automobile Technology Co Ltd
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Lantu Automobile Technology Co Ltd
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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
    • F16H59/08—Range selector apparatus
    • F16H59/10—Range selector apparatus comprising levers
    • 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
    • F16H59/0278—Constructional features of the selector lever, e.g. grip parts, mounting or manufacturing
    • 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
    • F16H59/08—Range selector apparatus
    • F16H59/10—Range selector apparatus comprising levers
    • F16H59/105—Range selector apparatus comprising levers consisting of electrical switches or sensors

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

Abstract

The application relates to an electronic gear shifting mechanism assembly, a gear shifting hand feeling selection method and a system, which relate to the technical field of automobile parts, wherein the assembly comprises: one end of the gear shifting rod is connected with the gear shifting handle, and the other end of the gear shifting rod is provided with a gear pin assembly which is abutted against the gear tooth-shaped plate; the rotating shaft vertically penetrates through the gear shift lever and is in interference fit with the gear shift lever; the motor is connected with the rotating shaft through a gear set; and the control unit is used for controlling the motor to provide resistance torque or boosting torque for the gear shifting lever. According to the application, when the operation hand feeling selection instruction is a motion mode instruction, the control unit can provide resistance torque for the gear shifting lever through the motor so as to improve the thick and heavy feeling and the definition of gear shifting operation; when the control hand feeling selection instruction is a comfortable mode instruction, the control unit can provide power-assisted torque for the gear shifting lever through the motor so as to ensure the portability of the control force, and further, different gear shifting control styles and driving requirements of different drivers are met through the same set of electronic gear shifting mechanism.

Description

Electronic gear shifting mechanism assembly, gear shifting hand feeling selection method and system
Technical Field
The application relates to the technical field of automobile parts, in particular to an electronic gear shifting mechanism assembly, a gear shifting hand feeling selection method and a gear shifting hand feeling selection system.
Background
AT present, with the vigorous development of the automobile manufacturing industry, the automatic transmissions such as AT (automatic Transmission), DCT (Dual Clutch Transmission) and CVT (continuous Variable Transmission) are applied more frequently, the technology and function thereof are developed more and more strongly, and the newly derived electronic Shifter (GSM) replaces the traditional mechanical shifting and is also applied widely.
In the related art, a knob type electronic shifter and a lever type electronic shifter are commonly known as an electronic shifter. Both the knob type electronic gear shifter and the gear lever type electronic gear shifter have fixed gear shifting handfeel based on the fixed limitation of a mechanical structure, namely the force value of gear shifting operation is fixed and cannot be adjusted.
However, the force value of the gear shifting operation is fixed in hand feeling and is not adjustable, so that the force value cannot meet all user groups. Female drivers are more inclined toward the lightness of the operating force, while some drivers who have a demand for the riding experience are more inclined toward the heaviness and clarity of the shift operation, and the like.
Disclosure of Invention
Aiming at the defects in the prior art, the application aims to provide an electronic gear shifting mechanism assembly, a gear shifting hand feeling selection method and a gear shifting hand feeling selection system, so as to solve the problem that the gear shifting hand feeling is fixed and unadjustable due to the limitation of the fixation of the mechanical structure of an electronic gear shifter in the related art.
The present application provides in a first aspect an electronic gearshift assembly, comprising:
one end of the gear shifting rod is connected with the gear shifting handle, and the other end of the gear shifting rod is provided with a gear pin assembly and is abutted against the gear tooth-shaped plate through the gear pin assembly;
a rotating shaft vertically penetrating the shift lever and interference-fitted to the shift lever;
a motor connected to the rotating shaft through a gear train;
and the control unit is used for controlling the motor to provide resistance torque or boosting torque for the gear shifting lever.
In some embodiments, a first receiving groove and a second receiving groove are formed in one end of the shift lever, which is away from the shift handle, and the second receiving groove is located at one end of the first receiving groove, which is away from the shift handle;
the above-mentioned gear round pin subassembly includes:
one end of the gear pin body is slidably assembled in the first accommodating groove and the second accommodating groove, and the other end of the gear pin body is in butt fit with the tooth-shaped gear groove on the gear tooth-shaped plate; a step surface is arranged on the part of the gear pin body positioned in the second accommodating groove;
the spring is sleeved in the second accommodating groove and sleeved on the retaining pin body, one end of the spring is abutted against the bottom wall of the second accommodating groove, and the other end of the spring is abutted against the step surface;
and the gear pin bushing is sleeved between the second accommodating groove and the gear pin body, and the spring is sleeved in the gear pin bushing.
In some embodiments, the gear set comprises:
a driving gear disposed on a transmission shaft of the motor and in interference fit with the transmission shaft;
and a driven gear provided on the rotating shaft and engaged with the driving gear, wherein a diameter of the driven gear is larger than a diameter of the driving gear.
In some embodiments, the above further comprises:
the lower shell is of a hollow structure with an opening at the upper end, and the gear tooth-shaped plate is installed in the lower shell;
and the upper shell is of a hollow structure with an opening at the lower end and is buckled above the lower shell, and the gear shift lever penetrates through the upper shell and extends into the lower shell.
In some embodiments, a PCBA board is further disposed in the lower casing, and the control unit is disposed on the PCBA board;
the PCBA board is integrated with an angle detection device, and the angle detection device is used for acquiring the rotation angle of the gear shift lever rotating around the rotation shaft.
In some embodiments, a lever sleeve is sleeved on the gear shifting lever, the lever sleeve is assembled in the upper shell and the lower shell, and the lever sleeve is provided with a through hole for the rotating shaft to pass through.
In a second aspect of the present application, a gear shifting hand feeling selection method based on the electronic gear shifting mechanism assembly is provided, which includes the steps of:
acquiring an operating hand feeling selection instruction of a driver;
when the control hand feeling selection instruction is a motion mode instruction, the motor provides resistance torque for the gear shifting lever through the rotating shaft;
when the control hand feeling selection instruction is a comfortable mode instruction, the motor provides assistance torque for the gear shifting lever through the rotating shaft.
In some embodiments, the method further comprises:
acquiring a force displacement curve of a gear shifting lever and a required fitting force displacement curve in advance;
taking the absolute value of the difference value between the force displacement curve of the gear shifting lever and the fitting force displacement curve as a force displacement curve assisted by the motor;
the motor provides assistance torque or resistance torque for the gear shifting lever based on the force displacement curve assisted by the motor.
In some embodiments, before the motor provides the assist torque or the resistance torque to the shift lever based on the force displacement curve of the motor assist, the method further includes:
the rotation angle of the shift lever about the rotation axis is acquired.
The third aspect of the present application provides a shift feel selection system, which includes the above-mentioned electronic shift mechanism assembly, and further includes:
the IVI central control screen is used for acquiring an operation hand feeling selection instruction of a driver and sending the operation hand feeling selection instruction to a control unit of the electronic gear shifting mechanism assembly through the whole vehicle gateway;
when the control hand feeling selection instruction is a motion mode instruction, the control unit is used for controlling the motor to provide resistance torque for the gear shifting lever;
when the control hand feeling selection instruction is a comfortable mode instruction, the control unit is used for controlling the motor to provide power-assisted moment for the gear shifting lever.
The technical scheme who provides this application brings beneficial effect includes:
the embodiment of the application provides an electronic gear shifting mechanism assembly, a gear shifting hand feeling selection method and a gear shifting hand feeling selection system, wherein the electronic gear shifting mechanism assembly comprises a gear shifting rod, a rotating shaft, a motor and a control unit, one end of the gear shifting rod is connected with a gear shifting handle, and the other end of the gear shifting rod is provided with a gear pin assembly and is abutted against a gear tooth plate through the gear pin assembly; the rotating shaft vertically penetrates through the gear shifting lever and is in interference fit with the gear shifting lever; the motor is connected with the rotating shaft through a gear set; the control unit is used for controlling the motor to provide resistance torque or boosting torque for the gear shifting lever through the rotating shaft. Therefore, when the manipulation hand feeling selection instruction of the driver is a motion mode instruction, the control unit can provide resistance torque for the gear shifting lever through the motor so as to improve the thick and heavy feeling and the definition of gear shifting manipulation; when the manipulation hand feeling selection instruction of the driver is a comfortable mode instruction, the control unit can provide power-assisted torque for the gear shifting lever through the motor so as to ensure the portability of manipulation force, and further, different gear shifting manipulation styles and driving requirements of different drivers are met through the same set of electronic gear shifting mechanism.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of an electric motor installed in an electronic shift mechanism assembly according to an embodiment of the present disclosure;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a first cross-sectional view of an electronic shift mechanism assembly in accordance with an embodiment of the present application;
FIG. 4 is a second cross-sectional view of the electronic shift mechanism assembly of the present application in an embodiment of the present application;
FIG. 5 is a flowchart of a shift feel selection method in an embodiment of the present application;
FIG. 6 is a schematic diagram of the force applied to the shift lever in the embodiment of the present application;
FIG. 7 is a graph of force displacement curves in an embodiment of the present application;
FIG. 8 is a functional block diagram of a shift feel selection system in an embodiment of the present application;
fig. 9 is a timing chart of shift feel adjustment in the embodiment of the present application.
Reference numerals:
1. a shift lever; 2. a shift handle; 3. a gear tooth-shaped plate; 4. a rotating shaft; 5. a motor; 6. a shift pin body; 7. a spring; 8. a gear pin bushing; 9. a driving gear; 10. a driven gear; 11. a lower housing; 12. an upper housing; 13. PCBA board; 14. a rod sleeve; 15. a toothed plate damper block; 16. a dust cover.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The embodiment of the application provides an electronic gear shifting mechanism assembly, a gear shifting hand feeling selection method and a gear shifting hand feeling selection system, and can solve the problem that in the related art, due to the limitation of fixing of a mechanical structure of an electronic gear shifter, the gear shifting hand feeling is fixed and cannot be adjusted.
As shown in fig. 1 and 2, the electronic shift mechanism assembly of the embodiment of the present application includes a shift lever 1, a shift knob 2, a gear tooth plate 3, a rotary shaft 4, a motor 5, and a control unit.
One end of the gear shifting rod 1 is connected with a gear shifting handle 2, the other end of the gear shifting rod 1 is provided with a gear pin assembly, and the gear shifting rod 1 abuts against a gear tooth-shaped plate 3 through the gear pin assembly. The driver can control the gear shifting rod 1 to shift gears by operating the gear shifting handle 2.
The rotary shaft 4 vertically penetrates the shift lever 1, and the rotary shaft 4 is in interference fit with the shift lever 1 so as to rotate together with the shift lever 1.
The motor 5 is connected to the rotary shaft 4 through a gear train, and thus can provide torque to the shift lever 1 through the rotary shaft 4.
The control unit is used for controlling the motor 5 to provide resistance torque or boosting torque for the gear shifting lever 1.
In the electronic gear shift mechanism assembly of the embodiment, the electronic gear shift mechanism assembly comprises a gear shift lever 1, a rotating shaft 4, a motor 5 and a control unit, one end of the gear shift lever 1 is connected with a gear shift handle 2, and the other end of the gear shift lever 1 is provided with a gear pin assembly and is abutted against a gear tooth plate 3 through the gear pin assembly; the rotating shaft 4 vertically penetrates through the gear shift lever 1 and is in interference fit with the gear shift lever 1; the motor 5 is connected with the rotating shaft 4 through a gear set; the control unit is used for controlling the motor 5 to provide resistance torque or boosting torque for the gear shift lever 1 through the rotating shaft 4. Therefore, when the manipulation hand feeling selection instruction of the driver is a motion mode instruction, the control unit can provide resistance torque for the gear shifting lever through the motor so as to improve the thick and heavy feeling and the definition of gear shifting manipulation; when the manipulation hand feeling selection instruction of the driver is a comfortable mode instruction, the control unit can provide power-assisted torque for the gear shifting lever through the motor so as to ensure the portability of manipulation force, and further, different gear shifting manipulation styles and driving requirements of different drivers are met through the same set of electronic gear shifting mechanism.
As shown in fig. 3 and 4, in the present embodiment, a first receiving groove and a second receiving groove for mounting the shift pin assembly are formed at one end of the shift lever 1 away from the shift knob 2, and the first receiving groove and the second receiving groove are communicated with each other, and the second receiving groove is located at one end of the first receiving groove away from the shift knob 2.
In this embodiment, the gear tooth-shaped plate 3 is provided with a tooth-shaped gear groove to provide a suitable motion curved surface profile and ensure a suitable gear shifting hand feeling.
Preferably, the above-mentioned gear pin assembly comprises a gear pin body 6, a spring 7 and a gear pin bushing 8.
One end of the gear pin body 6 is slidably assembled in the first accommodating groove and the second accommodating groove, and the other end of the gear pin body 6 is in abutting fit with the gear retaining groove on the gear toothed plate 3. When the spring is not compressed to the preset position, the part of the gear pin body 6, which is positioned in the gear shift lever 1, is completely positioned in the second accommodating groove; when the spring 7 is compressed beyond the preset position, the shift pin body 6 is located at one end in the shift lever 1, partially in the first receiving groove and partially in the second receiving groove.
The part of the gear pin body 6, which is positioned in the second accommodating groove, is also provided with a step surface. The spring 7 is sleeved in the second accommodating groove and sleeved on the gear pin body 6, one end of the spring 7 abuts against the bottom wall of the second accommodating groove, and the other end of the spring 7 abuts against the step surface of the gear pin body 6. The gear pin body 6 can be provided with a suitable spring pressure by means of the above-mentioned spring 7.
In this embodiment, the gear pin body 6 can be selected as a bullet gear pin which is matched with the tooth-shaped gear groove of the gear tooth-shaped plate 3.
The gear pin bushing 8 is sleeved between the second accommodating groove and the gear pin body 6, and the spring 7 is sleeved in the gear pin bushing 8. By providing the shift pin bushing 8 between the second accommodation groove and the shift pin body 6, the fit clearance between the shift pin body 6 and the shift lever 1 can be eliminated.
On the basis of the above embodiment, in the present embodiment, the gear set includes the driving gear 9 and the driven gear 10.
The driving gear 9 is disposed on the transmission shaft of the motor 5, and the driving gear 9 is in interference fit with the transmission shaft of the motor 5 so as to bear the torque transmitted by the motor 5, and the motor 5 rotates to drive the driving gear 9 to rotate through the transmission shaft.
The driven gear 10 is provided on the rotary shaft 4 and is in interference fit with the rotary shaft 4, the driven gear 10 is engaged with the driving gear 9 so as to receive the torque transmitted from the driving gear 9, and the diameter of the driven gear 10 is larger than that of the driving gear 9.
In this embodiment, the driving gear 9 rotates to drive the driven gear 10 to rotate, and further drives the rotating shaft 4 to rotate, so as to provide an assisting torque or a resisting torque for the gear shift lever 1.
In this embodiment, the electronic shift mechanism assembly further includes a lower housing 11 and an upper housing 12.
The lower casing 11 is a hollow structure with an open upper end, and the lower casing 11 can play a role in installation and support. The gear tooth plate 3 is installed in the lower housing 11.
The upper case 12 has a hollow structure with an open lower end, the upper case 12 is fastened above the lower case 11, the shift lever 1 passes through the upper case 12 and extends into the lower case 11, and the shift pin assembly on the shift lever 1 abuts against the shift tooth plate 3.
In this embodiment, the lower casing 11 and the upper casing 12 are installed in cooperation with each other to form a casing having an accommodating cavity therein, so as to protect structural components in the lower casing 11 and the upper casing 12. Wherein, the motor 5 and the gear set are both arranged in the containing cavities of the lower shell 11 and the upper shell 12.
Furthermore, the accommodating cavity is also provided with a main plug connector used for being connected with a whole vehicle wire harness, and the control unit can be ensured to normally communicate with the whole vehicle through the main plug connector.
Further, a PCBA board 13 is provided in the lower case 11, and the control unit is provided on the PCBA board 13.
The PCBA plate 13 has integrated thereon angle detection means for acquiring a rotation angle of the shift lever 1 about the rotation shaft 4 so that the control unit controls the motor 5 based on the rotation angle.
In other embodiments, a toothed plate damper block 15 is disposed in the lower housing 11. The upper end of the toothed plate vibration attenuation block 15 can be provided with a groove for accommodating the gear toothed plate 3, so that noise can be eliminated through the toothed plate vibration attenuation block 15, and the hand feeling impact strength at the tail of the stroke of the gear shift lever 1 can be reduced.
In this embodiment, the toothed damping block 15 and the gear toothed plate 3 are integrally injection-molded by a two-shot injection molding process.
Further, a lever sleeve 14 is fitted over the shift lever 1, and the lever sleeve 14 is assembled with the upper case 12 and the lower case 11. In this embodiment, the lever sleeve 14 is sleeved on the gear shift lever 1 and is provided with an avoiding groove, and the gear shift lever 1 is limited by the cooperation of the lever sleeve 14 and the upper and lower shells, and the rotational movement of the gear shift lever 1 is not hindered.
The rod sleeve 14 is further provided with a through hole for the rotation shaft 4 to pass through. In this embodiment, the lever sleeve 14 is in clearance fit with the rotating shaft 4 so as not to interfere with the rotation of the rotating shaft 4, thereby ensuring the normal movement of the shift lever 1.
In this embodiment, the electronic shift mechanism assembly further includes a dust cover 16. The dust cover 16 is a decoration member that is engaged with the interior shift panel, and the dust cover 16 can play a role of dust prevention and diversion.
As shown in fig. 5, the shift feel selecting method based on the electronic shift mechanism assembly according to the embodiment of the present application includes the following steps:
s1, obtaining an operation hand feeling selection instruction of a driver.
S2, when the control hand feeling selection instruction is a motion mode instruction, the motor 5 provides resistance moment for the gear shifting lever 1 through the rotating shaft 4.
And S3, when the control hand feeling selection instruction is a comfortable mode instruction, the motor 5 provides power-assisted torque for the gear shifting lever 1 through the rotating shaft 4.
The gear shifting hand feeling selection method can set different gear shifting operation styles according to different requirements of drivers through the same gear shifting mechanism assembly so as to meet different driving operation feeling requirements.
Further, the gear shifting hand feeling selection method further comprises the following steps:
first, a force displacement curve of the shift lever 1 and a desired fitting force displacement curve are acquired in advance.
Then, the absolute value of the difference between the force displacement curve of the shift lever 1 and the fitted force displacement curve is used as the force displacement curve for assisting the motor 5, and the curve parameters are stored in the control unit.
Subsequently, the motor 5 can provide a boosting torque or a resistance torque for the gear shift lever 1 based on the force displacement curve of the boosting force of the motor 5.
Preferably, before the motor 5 provides the gear shift lever 1 with the assisting torque or the resisting torque based on the force displacement curve of the assisting force of the motor 5, the method further includes the following steps:
the rotation angle of the gear shift lever 1 around the rotation shaft 4 is obtained, and based on the rotation angle and the force displacement curve of the motor 5 assisting force, the force value of the assisting force moment or the resistance moment of the motor 5 is obtained.
In this embodiment, after the driver operates the shift lever 1, the 3D hall angle detection device in the electronic shift mechanism assembly can detect the rotation angle of the shift lever 1 and send the rotation angle to the control unit (the sending period is only 5 ms), and the control unit can send a torque instruction to the motor 5 based on the rotation angle and the hand feeling mode of the shift lever 1 to control the motor 5.
In this embodiment, based on the mechanical structure of the electronic shift mechanism assembly, a basic shift hand feeling can be set, and then an operation hand feeling can be selected according to requirements, in the shift process, the motor 5 simultaneously participates in the work, and the movement direction of the shift lever 1 operated by the driver is identified by combining the rotation angle of the shift lever 1, that is, the change direction of the rotation angle, so as to control the motor to drive the gear set to rotate to output the corresponding assisting torque to the rotating shaft 4. The fitting of the force displacement curve of the gear shifting rod 1 and the force displacement curve assisted by the motor 5 is relied on to realize the fitting force displacement curve required by the driver, and further the requirements of different driving habits of the driver are met.
As shown in fig. 6, in this embodiment, when the manipulation feeling of the driver is selected to be the comfortable mode, the motors 5 all provide clockwise power-assisted torque output (when the monostable electronic shift mechanism pushes the shift lever forward to shift, the power-assisted torque direction is clockwise as viewed from the right side; when the manipulation hand feeling of the driver selects a motion mode, the motor 5 can provide anticlockwise resistance torque output (for a monostable electronic gear shift mechanism, the resistance torque direction is anticlockwise when the gear shift lever is pushed forwards for gear shift, and vice versa, the motor provides clockwise torque output), and the output torque is adjusted according to the rotation angle and the motion direction of the gear shift lever.
In this embodiment, based on the mechanical structure of the electronic shift mechanism assembly, the friction force of the movement of the sub-head shift pin and the positive pressure of the spring acting on the sub-head shift pin can be predetermined, and then the force displacement curve of the shift lever 1 is determined, and further based on the fitting force displacement curve required by the driver, the force displacement curve assisted by the motor 5 is obtained according to the following formula 1 and formula 2.
F 1 ×L 1 +M ＝F 2 ×COSα×L 2 (1)
F 2 ＝F 3 ×COSα×f (2)
Wherein, F 1 The operating force required for the driver to operate the shift lever 1; f 2 Friction force for movement of the bullet stop pin; l is a radical of an alcohol 1 The distance between the force application point of the gear shifting handle 2 and the axis of the rotating shaft 4; l is a radical of an alcohol 2 The contact point of the bullet head stop pin and the toothed plateDistance to the axis of the rotating shaft 4; f 3 The spring acts on the positive pressure of the bullet head stop pin; alpha is an included angle between the normal direction of the contact point of the bullet head retaining pin and the toothed plate and the axis of the bullet head retaining pin; f is the friction coefficient of the matching friction pair of the bullet head stop pin and the toothed plate; m is the motor driving torque.
As shown in fig. 7, the force displacement curve of the assist force of the motor 5 can be obtained by the force displacement curve of the shift lever 1 in normal mode and the fitting force displacement curve in comfort mode.
Accordingly, a force displacement curve of the resistance of the motor 5 can be obtained by a force displacement curve of the shift lever 1 in normal mode and a fitted force displacement curve in sport mode.
In some embodiments, the motor and the gear set may not be provided, and only based on the mechanical structure of the electronic gearshift assembly, a basic shift feel is set, and shifting is realized by only the mechanical structure, the bullet head pin is driven to slide along the curved surface of the toothed plate by the operating force applied to the gearshift lever 1, the force applied to the gearshift handle 2 is determined by the profile degree of the toothed plate and the bullet head pin, the friction coefficient, and the rigidity and the compression amount of the spring, once the mechanical structure is determined, the shift feel is correspondingly determined, and the shift feel has no adjustable function, and the operating force required by the driver to operate the gearshift lever 1 is calculated by the following formula 3 and formula 4:
F 1 ×L 1 ＝F 2 ×COSα×L 2 (3)
F 2 ＝F 3 ×COSα×f (4)
wherein, F 1 The operating force required for the driver to operate the shift lever 1; f 2 Friction for movement of the bullet stop pin; l is 1 The distance from the force application point of the gear shift handle 2 to the axis of the rotating shaft 4; l is a radical of an alcohol 2 The distance from the contact point of the bullet head stop pin and the toothed plate to the axis of the rotating shaft 4 is obtained; f 3 The spring acts on the positive pressure of the bullet head stop pin; alpha is an included angle between the normal direction of the contact point of the bullet head retaining pin and the toothed plate and the axis of the bullet head retaining pin; f is the friction coefficient of the friction pair of the bullet stop pin and the toothed plate.
As shown In fig. 8, the shift feel selection system according to the embodiment of the application includes the electronic shift mechanism assembly, and further includes an IVI (In-Vehicle information processing system) central control screen and a Vehicle gateway.
The IVI central control screen is used for acquiring an operation hand feeling selection instruction of a driver and sending the operation hand feeling selection instruction to a control unit of the electronic gear shifting mechanism assembly through the whole vehicle gateway.
When the operating hand feeling selection instruction is a motion mode instruction, the control unit is used for controlling the motor 5 to provide resistance torque for the gear shifting lever 1.
When the control hand feeling selection instruction is a comfortable mode instruction, the control unit is used for controlling the motor 5 to provide an assisting torque for the gear shifting lever 1.
Optionally, if a motor or other structure of the electronic shift mechanism assembly has a fault, the control unit of the electronic shift mechanism assembly performs fault detection and feeds back a detection result to the IVI central control screen, so as not to receive an operation hand feeling selection instruction and disable the selection function of the shift hand feeling mode.
In this embodiment, the control Unit is an MCU (micro controller Unit) control chip.
As shown in fig. 9, in this embodiment, after the control screen in the IVI obtains an operation hand feeling selection instruction of the driver, that is, a driving mode request, the operation hand feeling selection instruction is sent to a finished vehicle Gateway GW (Gateway) through a CAN bus, the finished vehicle Gateway GW sends the operation hand feeling selection instruction to an MCU control chip of the electronic shift mechanism assembly, and after a first preset time t1, the MCU control chip receives the operation hand feeling selection instruction and enters a corresponding mode state based on the instruction.
After the second preset time t2, the driver operates the gear shift lever 1, at this moment, the angle detection device on the PCBA board 13 collects the rotation angle of the gear shift lever 1 and sends the rotation angle to the MCU control chip, the MCU control chip obtains the motor torque request force value based on the rotation angle of the gear shift lever 1, and then sends the motor torque request force value to the motor 5, at this moment, the motor 5 receives the control instruction of the MCU control chip, and outputs torque to the rotation shaft based on the motor torque request value, so that corresponding power supply or resistance torque is provided for the gear shift lever 1, and gear shift handfeel of different styles is achieved.
Wherein the manipulation hand feeling selection instruction includes a sport mode (sport mode) instruction and a comfort mode (comfort mode) instruction.
The comfort mode gear shifting hand feeling is light as a whole, and at the moment, the motor outputs a positive power-assisted torque; the sport mode gear shifting feels the whole heavy and heavy feeling, the gear definition is high, and the motor outputs the reverse resistance torque at the moment.
Optionally, the manipulation hand feeling selection instruction further includes a normal mode (normal mode) instruction. When the operation hand feeling selection instruction is a normal mode instruction, the motor does not participate in the intervention of the gear shifting hand feeling.
In this embodiment, the first preset time t1 is a delay time of the CAN bus.
Optionally, the first preset time t1 is generally defined as 200ms, and depends on the rate of network signal transmission, that is, the time when the CAN signal including the command for manipulating the hand feeling selection is sent by the control screen in the IVI and received by the gateway GW to the MCU control chip.
The second preset time t2 is: and the MCU control chip receives the time from the control hand feeling selection instruction to the time when the driver starts to operate the gear shifting lever to move.
Alternatively, the second preset time t2 is generally defined as 200ms, and the time depends on the operation speed of the driver.
The gear-shifting hand feeling selection system is suitable for the gear-shifting hand feeling selection methods, a driver can select different operation hand feelings through the control screen in the IVI, the implementation mode is simple, and when the operation hand feeling selection instruction of the driver is a motion mode instruction, the control unit can provide resistance torque for the gear-shifting lever through the motor so as to improve the heaviness and the definition of gear-shifting operation; when the manipulation hand feeling selection instruction of the driver is a comfortable mode instruction, the control unit can provide power-assisted torque for the gear shifting lever through the motor so as to ensure the portability of manipulation force, and further, different gear shifting manipulation styles and driving requirements of different drivers are met through the same set of electronic gear shifting mechanism.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (3)

1. A gear-shifting hand feeling selection method based on an electronic gear-shifting mechanism assembly is characterized in that the electronic gear-shifting mechanism assembly comprises the following steps:
one end of the gear shifting rod (1) is connected with the gear shifting handle (2), and the other end of the gear shifting rod is provided with a gear pin assembly and is abutted against the gear tooth-shaped plate (3) through the gear pin assembly;
the rotating shaft (4) vertically penetrates through the gear shifting lever (1) and is in interference fit with the gear shifting lever (1);
a motor (5) connected to the rotating shaft (4) through a gear train;
the control unit is used for controlling the motor (5) to provide resistance torque or boosting torque for the gear shifting lever (1);
one end, far away from the gear shifting handle (2), of the gear shifting rod (1) is provided with a first accommodating groove and a second accommodating groove which are communicated with each other, and the second accommodating groove is located at one end, far away from the gear shifting handle (2), of the first accommodating groove;
the gear pin assembly includes:
one end of the gear pin body (6) is slidably assembled in the first accommodating groove and the second accommodating groove, and the other end of the gear pin body is in butt fit with the tooth-shaped gear groove on the gear tooth-shaped plate (3); the part of the gear pin body (6) positioned in the second accommodating groove is provided with a step surface;
the spring (7) is sleeved in the second accommodating groove and sleeved on the stop pin body (6), one end of the spring (7) is abutted against the bottom wall of the second accommodating groove, and the other end of the spring is abutted against the step surface;
the gear pin bushing (8) is sleeved between the second accommodating groove and the gear pin body (6), and the spring (7) is sleeved in the gear pin bushing (8);
the gear shifting hand feeling selection method comprises the following steps:
acquiring an operation hand feeling selection instruction of a driver;
when the control hand feeling selection instruction is a motion mode instruction, the motor (5) provides resistance torque for the gear shifting lever (1) through the rotating shaft (4);
when the control hand feeling selection instruction is a comfortable mode instruction, the motor (5) provides an assisting force moment for the gear shifting lever (1) through the rotating shaft (4).
2. The shift feel selection method of claim 1, further comprising:
pre-acquiring a force displacement curve of the gear shift lever (1) and a required fitting force displacement curve;
taking the absolute value of the difference between the force displacement curve of the gear shift lever (1) and the fitted force displacement curve as a force displacement curve assisted by the motor (5);
the motor (5) provides a boosting torque or a resistance torque for the gear shift lever (1) based on a force displacement curve boosted by the motor (5).
3. The shift hand selection method according to claim 2, wherein before the motor (5) provides the shift lever (1) with the assist torque or the drag torque based on the force displacement curve of the assist force of the motor (5), the method further comprises:
a rotational angle of the gear shift lever (1) about the rotational axis (4) is detected.
CN202110859348.6A 2021-07-28 2021-07-28 Electronic gear shifting mechanism assembly, gear shifting hand feeling selection method and system Active CN113606328B (en)

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JP2006064163A (en) * 2004-08-30 2006-03-09 Calsonic Kansei Corp Select assist device for automatic transmission
KR100851373B1 (en) * 2006-12-14 2008-08-08 에이디텍스(주) Automatic selecting and shifting control device for Manual Transmission
DE102007058922B3 (en) * 2007-12-05 2009-06-18 Zf Friedrichshafen Ag Actuating device with link shaft
KR102432477B1 (en) * 2017-11-16 2022-08-16 에스엘 주식회사 Automotive transmission
CN207554774U (en) * 2017-12-19 2018-06-29 法可赛(太仓)汽车配件有限公司 The selector of gear level actuation means and application the gear level actuation means
CN208734856U (en) * 2018-05-02 2019-04-12 圣加仑汽车工程技术（上海）有限公司 A kind of gearshift

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