CN112460211A - Double-power shift-by-wire actuator - Google Patents
Double-power shift-by-wire actuator Download PDFInfo
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- CN112460211A CN112460211A CN202011210420.4A CN202011210420A CN112460211A CN 112460211 A CN112460211 A CN 112460211A CN 202011210420 A CN202011210420 A CN 202011210420A CN 112460211 A CN112460211 A CN 112460211A
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- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
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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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
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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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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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
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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
- F16H61/02—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 characterised by the signals used
- F16H61/0202—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 characterised by the signals used the signals being electric
- F16H61/0204—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 characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
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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
- F16H61/18—Preventing unintentional or unsafe shift, e.g. preventing manual shift from highest gear to reverse gear
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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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- 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
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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
- 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
- F16H63/40—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 comprising signals other than signals for actuating the final output mechanisms
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The invention discloses a double-power shift-by-wire actuator, which comprises a gear box body, a connecting shaft, a first motor, a second motor, a planetary transmission structure and a shift detection structure, wherein the planetary transmission structure comprises a first worm, a first gear assembly, a plurality of planetary gears, a gear ring and a planetary carrier, a pin shaft is arranged at the bottom of the planetary carrier corresponding to the circle center of the planetary gears, the planetary gears are assembled on the pin shaft, the gear ring is provided with outer teeth around the outer side wall, the planetary transmission structure further comprises a second worm and a second gear assembly, and the second gear assembly is meshed with the outer teeth of the gear ring. Through the arrangement, the gear shifting actuator is independent of the automatic transmission, the platform design of the automobile gear shifting actuator is realized, and the arrangement space of the whole automobile is saved; meanwhile, the connecting shaft is driven to rotate through double-power transmission, so that after one power source fails, the other power source still can complete the gear shifting action of the automobile, the normal operation of the automobile is ensured, and the potential safety hazard of a driver is eliminated.
Description
Technical Field
The invention belongs to the technical field of gear shifting control of an automatic automobile transmission, and particularly relates to a shift-by-wire actuator.
Background
With the rapid development of electronic science and technology and the automobile industry, automobile electronization is becoming more and more popular, wherein the automobile gear shifting signal is transmitted by an electric signal through a CAN bus, which requires that the traditional mode of connecting an automobile gear shifter and a gear shifting actuator by a mechanical cable flexible shaft CAN not be adopted. And the traditional inhaul cable flexible shaft needs to pass through the related area of the whole vehicle to realize the connection between the vehicle gear shifter and the gear shifting actuator, and has certain requirements on the space area. Meanwhile, in a traditional inhaul cable flexible shaft control mode, the size of the gear shifter needs to be large, so that enough gear shifting force and gear shifting stroke are provided. The control mode of the guy cable flexible shaft brings the following disadvantages: (1) occupying an arrangement space; (2) the vehicle body needs to be perforated, so that the sealing performance is reduced; (3) in order to match the force and the stroke of the transmission, the shifter needs to be shaped into a relatively large volume; (4) due to the characteristics of the flexible cable shaft, friction and gaps are generated, and the operation hand feeling is influenced; (5) the vibration that the derailleur produced can transmit for the driver through cable flexible axle, selector, influences the travelling comfort.
The market correspondingly designs a shift-by-wire actuator without mechanical connection with a shifter, but the shift-by-wire actuator mostly adopts single power source input, once the power source fails, the process of automobile shifting cannot be realized, if the automobile is possibly damaged to a certain extent under the driving condition, even a certain safety threat can be caused to the driver.
In order to solve the problems, a gear shifting actuator which is safer and more reliable in gear shifting needs to be developed urgently.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a double-power shift-by-wire actuator, which comprises a gear box body, a connecting shaft, a first motor, a second motor, a planetary transmission structure and a shift detection structure, wherein the connecting shaft is used for being connected with double D shafts of a gearbox, the planetary transmission structure is used for transmitting the power generated by the rotation of the first motor and the second motor to the connecting shaft, the planetary transmission structure comprises a first worm fixedly arranged on an output shaft of the first motor, a first gear assembly meshed with the first worm, a plurality of planetary gears meshed with the first gear assembly, a gear ring with inner side teeth meshed with the plurality of planetary gears and a planet carrier used for driving the connecting shaft to synchronously rotate, a pin shaft is arranged at the bottom of the planet carrier corresponding to the circle center of the planetary gears, the planetary gears are assembled on the pin shaft, the outer side teeth are arranged on the ring gear in a surrounding manner, the planetary transmission structure, the second gear assembly is engaged with the outer teeth of the gear ring. Through the arrangement, the gear shifting actuator is independent of the automatic transmission, the platform design of the automobile gear shifting actuator is realized, and the arrangement space of the whole automobile is saved; meanwhile, the connecting shaft is driven to rotate through double-power transmission, so that after one power source fails, the other power source still can complete the gear shifting action of the automobile, the normal operation of the automobile is ensured, and the potential safety hazard of a driver is eliminated.
The purpose of the invention is realized by adopting the following technical scheme:
double dynamical drive-by-wire executor of shifting, including gear box, be used for with the double D hub connection's of gearbox connecting axle, first motor, second motor, be used for with first motor and second motor pivoted power transmission extremely the planetary transmission structure of connecting axle and shift detect the structure, planetary transmission structure including fixed set up in first motor output epaxial first worm, with first worm meshing's first gear subassembly, a plurality of with first gear subassembly meshing's planetary gear, inboard tooth and a plurality of planetary gear meshing's ring gear and be used for driving connecting axle synchronous pivoted planet carrier, the planet carrier bottom corresponds planetary gear's centre of a circle department is equipped with the round pin axle, planetary gear assembles in the round pin axle, the ring gear encircles the lateral wall and is equipped with outside tooth, planetary transmission structure still including fixed set up in second motor output epaxial second worm and with second motor meshing's worm And the second gear assembly is meshed with the outer teeth of the gear ring.
Further, the first gear assembly comprises a first helical gear engaged with the first worm and a sun gear fixedly arranged at the upper center of the first helical gear.
Further, the second gear assembly comprises a second helical gear engaged with the second worm and a spur gear fixedly arranged at the upper center of the second helical gear.
Furthermore, the planet carrier is connected with the connecting shaft through a flexible coupling, two ends of the flexible coupling are respectively and rigidly connected with the planet carrier and the connecting shaft, and a flexible body used for slowing down gear shifting impact is arranged in the middle of the flexible coupling.
Further, the lead angle of the first worm is less than the equivalent friction angle between the first worm tooth face and the first helical gear tooth face; the lead angle of the second worm is less than the equivalent friction angle between the second worm tooth flank and the second helical gear tooth flank.
Furthermore, the gear shifting detection structure comprises a magnet gear, a magnet fixedly arranged on the magnet gear and a control mainboard electrically connected with the first motor and the second motor, the magnet gear is rotatably arranged in the gear box body through a rolling bearing, and a magnet slot position used for mounting the magnet is formed in the center of the magnet gear; the control main board comprises a chip for detecting the magnetic induction line direction of the magnet and a plug for connecting with the gear shifting controller.
Furthermore, the connecting shaft is provided with an outer gear portion used for being meshed with the magnet gear, the transmission ratio of the outer gear portion to the magnet gear is 1, and the connecting shaft drives the magnet gear to synchronously rotate through the outer gear portion.
Furthermore, the magnet is made of a wet ferrite permanent magnet material, and the magnetizing direction is radial magnetizing.
Further, the gearbox body comprises a lower shell and a gearbox cover, the connecting shaft, the first motor, the second motor, the control main board and the planetary transmission structure are arranged in the lower shell, the lower shell corresponds to the plug and is provided with a jack, the lower shell is provided with an air hole, and the air hole is provided with an air plug.
Further, the connecting shaft passes through the axle sleeve with the gear box lid cooperation, the connecting shaft with be equipped with between the axle sleeve and be used for waterproof O type circle, O type circle adopts high temperature resistant rubber to make.
Compared with the prior art, the invention has the beneficial effects that:
the invention relates to a double-power shift-by-wire actuator, which comprises a gear box body, a connecting shaft, a first motor, a second motor, a planetary transmission structure and a shift detection structure, wherein the connecting shaft is used for being connected with double D shafts of a gearbox, the planetary transmission structure is used for transmitting the power generated by the rotation of the first motor and the second motor to the connecting shaft, the planetary transmission structure comprises a first worm fixedly arranged on an output shaft of the first motor, a first gear assembly meshed with the first worm, a plurality of planetary gears meshed with the first gear assembly, a gear ring with inner teeth meshed with the plurality of planetary gears and a planet carrier used for driving the connecting shaft to synchronously rotate, a pin shaft is arranged at the bottom of the planet carrier corresponding to the circle center of the planetary gears, the planetary gears are assembled on the pin shaft, the outer teeth are arranged around the outer side wall of the gear ring, the planetary transmission structure also comprises a second, the second gear assembly is engaged with the outer teeth of the gear ring. Through the arrangement, the gear shifting actuator is independent of the automatic transmission, the platform design of the automobile gear shifting actuator is realized, and the arrangement space of the whole automobile is saved; meanwhile, the connecting shaft is driven to rotate through double-power transmission, so that after one power source fails, the other power source still can complete the gear shifting action of the automobile, the normal operation of the automobile is ensured, and the potential safety hazard of a driver is eliminated.
Drawings
FIG. 1 is a schematic structural view of a preferred embodiment of a dual-power shift-by-wire actuator of the present invention;
FIG. 2 is an exploded view of a preferred embodiment of the dual power shift-by-wire actuator of the present invention;
FIG. 3 is a cross-sectional view of the dual-power shift-by-wire actuator of the present invention taken transversely through the center of the connecting shaft;
FIG. 4 is a cross-sectional view of the dual power shift-by-wire actuator of the present invention longitudinally through the center of the connecting shaft;
FIG. 5 is a schematic structural view of a preferred embodiment of the connecting shaft of the present invention;
FIG. 6 is a schematic structural view of a preferred embodiment of the first gear assembly of the present invention;
FIG. 7 is a schematic structural view of a preferred embodiment of a ring gear of the present invention;
FIG. 8 is a schematic structural diagram of another perspective view of a preferred embodiment of a planet carrier of the present invention;
FIG. 9 is a schematic structural view of a preferred embodiment of a second gear assembly of the present invention;
FIG. 10 is a cross-sectional view of a preferred embodiment of the magnet gear of the present invention;
FIG. 11 is a shift flow diagram of the present invention.
In the figure: 100. a dual-power shift-by-wire actuator; 1. a gear housing; 11. a lower housing; 111. a jack; 112. air holes are formed; 113. a venting plug; 12. a gearbox cover; 2. a connecting shaft; 21. an outer gear portion; 22. A shaft sleeve; 23. an O-shaped ring; 31. a first motor; 32. a second motor; 41. a first worm; 42. a first gear assembly; 421. a first helical gear; 422. a sun gear; 43. a planetary gear; 44. a ring gear; 441. inner teeth; 442. outer teeth; 45. a planet carrier; 451. a pin shaft; 46. a second worm; 47. a second gear assembly; 471. a second helical gear; 472. a spur gear; 48. a flexible coupling; 5. a shift detection arrangement; 51. a magnet gear; 511. a magnet slot position; 52. a magnet; 53. a rolling bearing; 54. and controlling the main board.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
As shown in fig. 1-11, the dual-power shift-by-wire actuator 100 of the present invention comprises a gear box 1, a connecting shaft 2 for connecting with a dual D shaft of a transmission box, a first motor 31, a second motor 32, a planetary transmission structure for transmitting the power generated by the rotation of the first motor 31 and the second motor 32 to the connecting shaft 2, and a shift detection structure 5, wherein the planetary transmission structure comprises a first worm 41 fixedly arranged on the output shaft of the first motor 31, a first gear assembly 42 engaged with the first worm 41, a plurality of planetary gears 43 engaged with the first gear assembly 42, a plurality of gear rings 44 with inner teeth 441 engaged with the plurality of planetary gears 43, and a planet carrier 45 for driving the connecting shaft 2 to rotate synchronously, a pin 451 is arranged at the bottom of the planet carrier 45 corresponding to the center of the planetary gears 43, the planetary gears 43 are assembled on the pin 451, the gear rings 44 are provided with outer teeth 442 around, the planetary transmission further comprises a second worm gear 46 fixedly arranged on the output shaft of the second motor 32 and a second gear assembly 47 engaged with the second worm gear 46, the second gear assembly 47 being engaged with the outer teeth 442 of the ring gear 44. Through the arrangement, the gear shifting actuator is independent of the automatic transmission, the platform design of the automobile gear shifting actuator is realized, and the arrangement space of the whole automobile is saved; meanwhile, the connecting shaft 2 is driven to rotate through double-power transmission, so that after one power source fails, the other power source still can complete the gear shifting action of the automobile, the normal operation of the automobile is ensured, and the potential safety hazard of a driver is eliminated.
The shift procedure in this embodiment is (as shown in fig. 11): the driver operates the gear shifter to transmit the gear shifting intention to the gear shifter controller through an electric signal, and the gear shifter controller converts the signal into a control signal and sends the control signal to the actuator controller. The actuator controller compares the position state of the shift-by-wire actuator with the received shift control signal, and according to the comparison result, the actuator controller converts the shift control signal into an electric signal to drive the shift-by-wire actuator to move correspondingly. The TCU shaft is driven to rotate by the shift-by-wire actuator until the position of a gear expected by a driver is reached, then the position state of the TCU controller is fed back to the shift controller to prepare for next gear shifting, and meanwhile, the position state of the TCU, namely the gear information, is displayed on a panel of the automobile to complete the gear shifting process. In the process of executing automobile gear shifting, the shift-by-wire actuator needs to feed back the position state of the shift-by-wire actuator to the actuator controller, and the actuator controller also needs to feed back the state information of the shift-by-wire actuator to the shifter controller, so as to form a closed-loop control system.
The planetary transmission structure in this embodiment is used to transmit the power generated by the rotation of the first motor 31 and the second motor 32 to the connecting shaft 2, and then transmit the power to the dual D-shafts through the connecting shaft 2, so as to implement a gear shifting action. Wherein the planetary transmission comprises a first transmission transmitting the first electric machine 31 and a second transmission transmitting the second electric machine 32.
Preferably, in this embodiment, a case of using dual power outputs simultaneously, that is, a case of supplying power to two motors simultaneously is considered as a priority, and the power source is provided by the first motor 31 and the second motor 32. The power of the first motor 31 forms a first power input through the first worm 41 and the first gear assembly 42, the power of the second motor 32 forms a second power input through the second worm 46 and the second gear assembly 47, and the first power input is transmitted to the planetary gear 43 through the sun gear 422; the power input II is also transmitted to the planetary gear 43 through the gear ring 44; the double power is converged at the planetary gear 43 to drive the planetary carrier 45 to rotate, and finally the power is transmitted to the connecting shaft 2 through the planetary carrier 45. The planet carrier 45 transmits power to the connecting shaft 2 through the flexible coupling 48, and the connecting shaft 2 drives the TCU double-D shaft on the automatic gearbox to rotate so as to realize automobile gear shifting; when the connecting shaft 2 rotates, the outer gear part 21 drives the magnet gear 51 meshed with the outer gear part to rotate, the magnet 52 rotates along with the outer gear part, and the chip detects the magnetic induction line direction of the magnet 52 at the same time, so that gear shifting control is realized.
Meanwhile, when one power source fails, the gear shifting actuator can drive the gear shifting action of the automobile under the driving of the other power source to ensure the normal operation of the automobile and eliminate the potential safety hazard of a driver. The single power source driving mode is a secondary selection scheme of the operation of the gear shifting actuator. The lead angle of the first worm 41 is smaller than the equivalent friction angle between the tooth surface of the first worm 41 and the tooth surface of the first bevel gear 421, and the first worm 41 and the first bevel gear 421 in the first gear assembly 42 have a self-locking function. The lead angle of the second worm 46 is smaller than the equivalent friction angle between the tooth surface of the second worm 46 and the tooth surface of the second bevel gear 471, and the second worm 46 and the second bevel gear 471 in the second gear assembly 47 have a self-locking function. When one of the worm and the helical gear are self-locked, one degree of freedom of the planetary transmission structure is limited at the moment, so that only one degree of freedom is left to be matched with a single power source, and the single power source can still complete the gear shifting action.
When the second motor 32 fails, the second worm 46 and the second bevel gear 471 are self-locked, and the first motor 31 drives the first transmission structure to realize a gear shifting action. The first transmission structure comprises a first worm 41 fixedly arranged on an output shaft of the first motor 31, a first gear assembly 42 meshed with the first worm 41, a plurality of planet gears 43 meshed with the first gear assembly 42, a gear ring 44 with inner teeth 441 meshed with the planet gears 43, and a planet carrier 45 used for driving the connecting shaft 2 to synchronously rotate, wherein a pin shaft 451 is arranged at the bottom of the planet carrier 45 corresponding to the circle center of the planet gears 43, and the planet gears 43 are assembled on the pin shaft 451. Wherein the first gear assembly 42 includes a first bevel gear 421 engaged with the first worm 41, and a sun gear 422 fixedly disposed at the center above the first bevel gear 421, and the sun gear 422 is a spur gear 472.
When the first motor 31 is used as a power source to realize a gear shifting action, the power of the first motor 31 is transmitted to the first helical gear 421 of the first gear assembly 42 engaged with the first worm 41 through the first worm 41, at this time, the sun gear 422 above the first helical gear 421 transmits the power to the plurality of planetary gears 43, as the planetary gears 43 are engaged with the inner teeth 441 of the gear ring 44, the planetary gears 43 rotate around the inner teeth 441 of the gear ring 44 while rotating, and drive the whole planetary carrier 45 to rotate, the planetary carrier 45 drives the connecting shaft 2 to synchronously rotate in the process of finally rotating again, and the connecting shaft 2 drives the TCU double D shafts on the automatic transmission to rotate, so that the gear shifting of the automobile is realized.
When the first motor 32 fails, the first worm 41 and the first bevel gear 421 are self-locked, and the second motor 31 drives the second transmission structure to realize a gear shifting action. The second transmission structure includes a second worm 46 fixedly disposed on the output shaft of the second motor 32 and a second gear assembly 47 engaged with the second worm 46, and the connection structure of the subsequent gear ring 44 to the planet carrier 45 is the same as the first transmission structure, and is not described herein again. The gear ring 44 is provided with outer teeth 442 around the outer side wall, the second gear assembly 47 is engaged with the outer teeth 442 of the gear ring 44, and the second gear assembly 47 includes a second bevel gear 471 arranged to be engaged with the second worm 46 and a spur gear 472 fixedly arranged at the upper center of the second bevel gear 471.
When the second motor 32 is used as a power source to realize a gear shifting action, the power of the second motor 32 is transmitted to the second bevel gear 471 of the second gear assembly 47 engaged with the second worm 46 through the second worm 46, at this time, the straight gear 472 positioned above the second bevel gear 471 rotates along with the second worm, and drives the engaged gear ring 44 to rotate, the gear ring 44 drives the planet gear 43 at the inner side to rotate around the inner side of the gear ring 44 while rotating, so as to drive the whole planet carrier 45 to rotate, the planet carrier 45 drives the connecting shaft 2 to synchronously rotate in the process of finally rotating again, and the connecting shaft 2 drives the TCU double D shafts on the automatic transmission to rotate, so that the gear shifting of the automobile.
Preferably, in this embodiment, the planet carrier 45 transmits power to the connecting shaft 2 through the flexible coupling 48, and the inner sides of the two ends of the flexible coupling 48 are both provided with a threaded structure, so that the planet carrier 45 and the connecting shaft 2 can be locked with the flexible coupling 48 respectively, rigid connection is realized, and the effect of synchronous rotation of the three is ensured. Meanwhile, the middle part of the flexible coupling 48 is provided with a flexible body for slowing down gear shifting impact, the flexible body can elastically deform, gear shifting impact is improved, and the experience of a driver is better.
The gear shifting detection structure 5 in this embodiment includes a magnet gear 51, a magnet 52 fixedly disposed on the magnet gear 51, and a control main board 54 electrically connected to both the first motor 31 and the second motor 32, wherein the magnet gear 51 is rotatably disposed in the gear housing 1 through a rolling bearing 53, a magnet slot 511 for mounting the magnet 52 is disposed at the center of the magnet gear 51, the magnet slot 511 and the magnet gear 51 are coaxially disposed, and the magnet 52 is installed in the magnet slot 511 in an interference fit manner.
Preferably, the magnet 52 has a square structure, is made of a wet ferrite permanent magnet material, and is magnetized in a radial direction. And the control main board 54 includes a chip for detecting the magnetic induction line direction of the magnet 52 and a plug for connecting with the shift controller. When the magnet 52 rotates, the direction of the magnetic induction line changes, and the chip can detect the gear position of the gear shift actuator by detecting the direction of the magnetic induction line of the magnet 52.
In this embodiment, the connecting shaft 2 is provided with an outer gear portion 21 engaged with the magnet gear 51, a transmission ratio between the outer gear portion 21 and the magnet gear 51 is 1, and the connecting shaft 2 drives the magnet gear 51 to rotate synchronously through the outer gear portion 21. Through foretell setting, after planet transmission structure drove connecting axle 2 and rotates, connecting axle 2 just can drive magnet gear 51 and rotate, and magnet 52 on the magnet gear 51 also rotates round self axis this moment, and its magnetism feels line direction and also changes, and the chip just can detect the gear position of the executor of shifting this moment through the magnetism that detects magnet 52 feels line direction. Therefore, the linear change detection of the signal is realized, the gear shift detection precision is high, and the controllability is good. The control main board 54 is electrically connected to the two motors, and can supply power to the two motors simultaneously and preferentially, and when one of the motors is damaged, the control main board can transmit an electric signal to the other motor which can be normally used to control the forward and reverse rotation of the motor.
The gear box body 1 of the embodiment comprises a lower shell 11 and a gear box cover 12, wherein the connecting shaft 2, the first motor 31, the second motor 32, the control main board 54 and the planetary transmission structure are arranged in the lower shell 11, the lower shell 11 is provided with a jack 111 corresponding to the plug, the jack 111 enables the plug to leak out of the box body, and a gear shifting controller can be directly connected to the plug. The lower shell 11 is provided with an air hole 112, and the air hole 112 is provided with an air plug 113.
Preferably, the lower housing 11 is provided with a cross positioning column for positioning the gear box cover 12, and the lower housing 11 and the gear box cover 12 are connected through screws, so that the installation of the lower housing 11 and the gear box cover 12 is faster and firmer. Meanwhile, a waterproof sealing ring is arranged at the joint of the lower shell 11 and the gearbox cover 12, and the specific structural form of the sealing ring is determined according to the matching boundary structure of the lower shell 11 and the gearbox cover 12.
In the present embodiment, the connecting shaft 2 is engaged with the gear box cover 12 through the bushing 22, so that friction between the connecting shaft 2 and the gear box cover 12 is reduced. An O-shaped ring 23 for water prevention is arranged between the connecting shaft 2 and the shaft sleeve 22, an annular groove is formed in the top of the connecting shaft 2 corresponding to the O-shaped ring 23, and the O-shaped ring 23 is arranged in the annular groove and is in interference fit with the shaft sleeve 22. The O-shaped ring 23 is made of high-temperature-resistant rubber, so that the connection is tighter and firmer, and the waterproof performance is good.
The above-described embodiments of the present invention are not intended to limit the scope of the present invention, and the embodiments of the present invention are not limited thereto, and various other modifications, substitutions and alterations can be made to the above-described structure of the present invention without departing from the basic technical concept of the present invention as described above, according to the common technical knowledge and conventional means in the field of the present invention.
Claims (10)
1. Double dynamical drive-by-wire executor that shifts characterized in that: the double-shaft planetary transmission mechanism comprises a gear box body, a connecting shaft, a first motor, a second motor, a planetary transmission structure and a gear shifting detection structure, wherein the connecting shaft is used for being connected with double D shafts of a gearbox, the planetary transmission structure is used for transmitting power generated by the rotation of the first motor and the second motor to the connecting shaft, the planetary transmission structure comprises a first worm fixedly arranged on an output shaft of the first motor, a first gear assembly meshed with the first worm, a plurality of planetary gears meshed with the first gear assembly, an inner side tooth, a plurality of gear rings meshed with the planetary gears and a planetary carrier used for driving the connecting shaft to synchronously rotate, a pin shaft is arranged at the position, corresponding to the circle center of the planetary gear, of the bottom of the planetary carrier, the planetary gear is assembled on the pin shaft, the gear rings are provided with outer side teeth around the outer side wall, and the planetary transmission structure further comprises a second worm fixedly arranged on the output shaft of, the second gear assembly is engaged with the outer teeth of the gear ring.
2. The dual-power shift-by-wire actuator of claim 1, wherein: the first gear assembly comprises a first helical gear meshed with the first worm and a sun gear fixedly arranged at the center above the first helical gear.
3. The dual-power shift-by-wire actuator of claim 1, wherein: the second gear assembly comprises a second helical gear meshed with the second worm and a straight gear fixedly arranged in the center above the second helical gear.
4. The dual-power shift-by-wire actuator of claim 1, wherein: the planet carrier is connected with the connecting shaft through a flexible coupling, two ends of the flexible coupling are respectively and rigidly connected with the planet carrier and the connecting shaft, and the middle part of the flexible coupling is provided with a flexible body for relieving gear shifting impact.
5. The dual-power shift-by-wire actuator of claim 1, wherein: the lead angle of the first worm is smaller than the equivalent friction angle between the first worm tooth surface and the first helical gear tooth surface; the lead angle of the second worm is less than the equivalent friction angle between the second worm tooth flank and the second helical gear tooth flank.
6. The dual-power shift-by-wire actuator of claim 1, wherein: the gear shifting detection structure comprises a magnet gear, a magnet fixedly arranged on the magnet gear and a control mainboard electrically connected with the first motor and the second motor, the magnet gear is rotatably arranged in the gear box body through a rolling bearing, and a magnet slot position used for mounting the magnet is formed in the center of the magnet gear; the control main board comprises a chip for detecting the magnetic induction line direction of the magnet and a plug for connecting with the gear shifting controller.
7. The dual-power shift-by-wire actuator of claim 6, wherein: the connecting shaft is provided with an outer gear portion used for being meshed with the magnet gear, the transmission ratio of the outer gear portion to the magnet gear is 1, and the connecting shaft drives the magnet gear to synchronously rotate through the outer gear portion.
8. The dual-power shift-by-wire actuator of claim 6, wherein: the magnet is made of wet ferrite permanent magnet materials, and the magnetizing direction is radial magnetizing.
9. The dual-power shift-by-wire actuator of claim 6, wherein: the gearbox casing includes casing and gear box lid down, connecting axle, first motor, second motor, control mainboard and planetary transmission structure all set up in the casing down, the casing corresponds down the plug is equipped with the jack, the casing is equipped with the bleeder vent down, the bleeder vent is equipped with ventilative stopper.
10. The dual-power shift-by-wire actuator of claim 9, wherein: the connecting shaft passes through the axle sleeve with the gear box lid cooperation, the connecting shaft with be equipped with between the axle sleeve and be used for waterproof O type circle, O type circle adopts high temperature resistant rubber to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011210420.4A CN112460211A (en) | 2020-11-03 | 2020-11-03 | Double-power shift-by-wire actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011210420.4A CN112460211A (en) | 2020-11-03 | 2020-11-03 | Double-power shift-by-wire actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112460211A true CN112460211A (en) | 2021-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011210420.4A Withdrawn CN112460211A (en) | 2020-11-03 | 2020-11-03 | Double-power shift-by-wire actuator |
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| Country | Link |
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| CN (1) | CN112460211A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114019097A (en) * | 2021-10-08 | 2022-02-08 | 利晟（杭州）科技有限公司 | Industrial park air quality automatic monitoring device and system |
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|---|---|---|---|---|
| JP2002349700A (en) * | 2001-05-29 | 2002-12-04 | Jatco Ltd | Shift-by-wire system |
| CN103953725A (en) * | 2014-05-13 | 2014-07-30 | 清华大学 | Actuator for mechanical automatic transmission clutch |
| CN204805506U (en) * | 2012-05-16 | 2015-11-25 | 德韧营运有限责任公司 | Derailleur gear -change control system that drive -by -wire was shifted |
| CN110735920A (en) * | 2019-11-26 | 2020-01-31 | 上海汽车变速器有限公司 | Single motor driven speed variator gear selecting and shifting operating device |
| CN214465882U (en) * | 2020-11-03 | 2021-10-22 | 广汽零部件有限公司 | Double-power shift-by-wire actuator |
-
2020
- 2020-11-03 CN CN202011210420.4A patent/CN112460211A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002349700A (en) * | 2001-05-29 | 2002-12-04 | Jatco Ltd | Shift-by-wire system |
| CN204805506U (en) * | 2012-05-16 | 2015-11-25 | 德韧营运有限责任公司 | Derailleur gear -change control system that drive -by -wire was shifted |
| CN103953725A (en) * | 2014-05-13 | 2014-07-30 | 清华大学 | Actuator for mechanical automatic transmission clutch |
| CN110735920A (en) * | 2019-11-26 | 2020-01-31 | 上海汽车变速器有限公司 | Single motor driven speed variator gear selecting and shifting operating device |
| CN214465882U (en) * | 2020-11-03 | 2021-10-22 | 广汽零部件有限公司 | Double-power shift-by-wire actuator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114019097A (en) * | 2021-10-08 | 2022-02-08 | 利晟（杭州）科技有限公司 | Industrial park air quality automatic monitoring device and system |
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Application publication date: 20210309 |