CN112901722A

CN112901722A - Shift actuator and shift method

Info

Publication number: CN112901722A
Application number: CN202010795836.0A
Authority: CN
Inventors: 童放; 姚远; 吴迪
Original assignee: Fengjiang Intelligent Software Technology Nanjing Co Ltd
Current assignee: Fengjiang Intelligent Software Technology Nanjing Co Ltd
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2021-06-04
Also published as: WO2022033067A1

Abstract

The invention discloses a gear shifting execution device and a gear shifting method, wherein the gear shifting execution device comprises a gear shifting driver, a gear selecting driver and a gear shifting head, wherein the gear shifting head is installed on the gear shifting driver in a driving mode so as to allow the gear shifting driver to drive the gear shifting head to move back and forth on a gear shifting shaft of a gearbox to realize automatic gear shifting, and the gear shifting head is installed on the gear selecting driver in a driving mode so as to allow the gear selecting driver to drive the gear shifting head to switch from one gear shifting shaft to another gear shifting shaft of the gearbox to realize automatic gear selecting.

Description

Shift actuator and shift method

Technical Field

The invention relates to the field of agricultural machinery, in particular to a gear shifting execution device and a gear shifting method.

Background

Agricultural machines, such as tractors and harvesters, are commonly used agricultural machinery in agricultural production. The advent and popularity of agricultural machinery has greatly freed up the labor and has prompted a shift in agriculture from traditional to modern agriculture. The power system of the existing agricultural machine comprises an engine and a manual transmission, when a driver drives the existing agricultural machine, the driver needs to manually and frequently operate the manual transmission to realize gear shifting of the agricultural machine, the requirement on the operation and control technology of the driver is high, the driver is easy to fatigue, more importantly, the exertion level and the energy consumption level of the vehicle performance of the agricultural machine are seriously limited by the operation and control technology of the driver, namely, the higher the operation and control technology of the driver is, the more the vehicle performance of the agricultural machine can be reflected and the more the energy consumption level can be reduced. An automatic transmission is a transmission widely used in a passenger vehicle (e.g., a private car), and is capable of performing automatic shift-up and shift-down operations while allowing kinetic energy output from an engine to be matched with a vehicle speed of the vehicle, thereby reducing a demand for a driver's control technique. However, the working environment of the agricultural machine is different from that of a passenger vehicle, the working environment of the agricultural machine is more complex, the agricultural machine not only needs to work in a farmland environment with a leveling rule, but also needs to work in a working environment with poorer working conditions, and therefore the existing automatic gearbox cannot be applied to the agricultural machine.

Disclosure of Invention

An object of the present invention is to provide a shift actuator and a shifting method, wherein the shift actuator is capable of automatically operating a transmission to allow an agricultural machine to automatically select and shift gears, thus allowing the agricultural machine to work in a complicated working environment.

An object of the present invention is to provide a gear shift actuator and a gear shift method, wherein the gear shift actuator can automatically operate the transmission case to allow the agricultural machine to automatically select and shift gears, so that the automation level of the agricultural machine can be improved. For example, the transmission has two shift shafts, an automatic gear selection is effected when the shift finger of the shift actuator is shifted from one shift shaft of the transmission to the other shift shaft, and correspondingly, an automatic gear shift is effected when the shift finger of the shift actuator is moved back and forth on one shift shaft of the transmission.

It is an object of the present invention to provide a gear shift actuator and a gear shift method, wherein the gear shift actuator provides a gear shift actuator and a gear selection actuator, wherein the gear shift lever is drivably connected to the gear shift actuator such that the gear shift lever moves back and forth on a gear shift shaft of the transmission to achieve automatic gear shifting when the gear shift actuator drives the gear shift lever, and wherein the gear shift lever is drivably connected to the gear selection actuator such that the gear shift lever shifts from one gear shift shaft of the transmission to another gear shift shaft of the transmission to achieve automatic gear selection when the gear selection actuator drives the gear shift lever.

It is an object of the present invention to provide a gear shift actuator and a gear shift method, wherein the gear selection driver provides a gear selection motor, a lead screw assembly, and a gear selection dial, the lead screw assembly is connected with the gear selection motor in a driving manner, the gear selection dial is connected with the lead screw assembly in a driving manner, wherein the lead screw assembly is used for converting the rotation motion of the gear selection motor into the reciprocating motion of the gear selection dial, so as to allow the gear selection dial to stir the gear shifting dial to reciprocate synchronously, and therefore the gear shifting dial is converted from one gear shift shaft to another gear shift shaft of the gearbox to realize automatic gear selection.

According to one aspect of the present invention, there is provided a shift actuator for use in a transmission having two shift shafts, wherein the shift actuator comprises:

a shift actuator;

a gear selection driver; and

a shift finger, wherein said shift finger is drivably mounted to said shift actuator to allow said shift actuator to drive said shift finger forward and backward on one of said shift shafts of said transmission, wherein said shift finger is drivably mounted to said select actuator to allow said select actuator to drive said shift finger from one of said shift shafts of said transmission to another of said shift shafts.

According to an embodiment of the present invention, the shift driver includes a driving motor, a reduction gear installed at the driving motor, a driving reduction gear installed at a shift power output shaft of the reduction gear, and a transmission reduction gear engaged with the driving reduction gear, wherein the shift tap includes a tap body and a tap gear provided at the tap body, the tap gear being engaged with the transmission reduction gear.

According to an embodiment of the present invention, the gear selecting driver includes a gear selecting motor, a screw assembly and a gear selecting dial, the screw assembly includes a screw and a thread sleeve sleeved on the screw, the screw is mounted on a gear selecting power output shaft of the gear selecting motor, the gear selecting dial is disposed on the thread sleeve, and the gear shifting dial is drivably disposed on the gear selecting dial.

According to an embodiment of the present invention, the gear selection driver includes a gear selection motor, a screw assembly, and a gear selection dial, the screw assembly includes a screw and a thread sleeve sleeved on the screw, the screw is mounted on a gear selection power output shaft of the gear selection motor, the gear selection dial is disposed on the thread sleeve, and the dial body of the gear selection dial is drivably mounted on the gear selection dial.

According to one embodiment of the invention, the gear selector dial has a dial arm and the dial body has an annular catch, wherein the dial arm of the gear selector dial extends to and is retained in the annular catch of the dial body.

According to one embodiment of the invention, the dial arm is provided with a C-shaped retaining groove, and the part of the dial body for forming the annular clamping groove is retained in the retaining groove of the dial arm.

According to an embodiment of the invention, the shift actuator further comprises a shift angle sensor mounted to the active reduction gear.

According to an embodiment of the present invention, the gear shift actuator further comprises a sensor rocker arm and a gear selection angle sensor, wherein the sensor rocker arm comprises a rocker cross bar, a rocker upper section extending upward from one end of the rocker cross bar, and a rocker lower section extending downward from the other end of the rocker cross bar, wherein the rocker upper section is slidably mounted to the slide groove of the gear selection dial, the gear selection angle sensor is mounted to the rocker lower section, and the rocker lower section is configured to perform only rotational movement.

According to an embodiment of the present invention, the shift actuator further includes a housing having a housing inner space, a first communicating passage, a second communicating passage, a third communicating passage, a fourth communicating passage, and a fifth communicating passage, the first communicating passage and the second communicating passage communicating with the housing inner space at a housing wall of the housing, the third communicating passage and the fourth communicating passage communicating with the housing inner space at a housing cover of the housing, and the third communicating passage corresponding to the first communicating passage, the fifth communicating passage communicating with the housing inner space at a housing wall of the housing, wherein the speed reducer is mounted to the housing wall in such a manner that the shift power output shaft of the speed reducer extends to the housing inner space through the first communicating passage, wherein the shift angle sensor extends to the housing inner space through the third communicating passage with a part of the shift angle sensor The housing inner space and being mounted to the drive reduction gear is mounted to the housing cover, wherein the dial body of the shift dial extends to the outside of the housing through the second communication passage, wherein the gear selection motor is mounted to the housing cover in such a manner that the gear selection power output shaft of the gear selection motor extends to the housing inner space through the fourth communication passage, wherein the gear selection angle sensor is mounted to the housing wall in such a manner that a part of the gear selection angle sensor extends to the housing inner space through the fifth communication passage and is mounted to the rocker arm lower section, wherein the rocker arm lower section is rotatably mounted to the housing wall such that the rocker arm lower section is set to make only rotational movement.

According to another aspect of the present invention, the present invention further provides a shifting method, wherein the shifting method comprises the steps of:

(a) allowing a gear shift driver to drive a gear shift shifting block to move back and forth on a gear shift shaft of a gearbox to realize automatic gear shifting; and

(b) and allowing a gear selection driver to drive the gear shifting head to be switched from one gear shifting shaft to the other gear shifting shaft of the gearbox to realize automatic gear selection.

According to an embodiment of the present invention, the step (b) further comprises the steps of:

(b.1) converting the rotary motion of a gear selection motor into the reciprocating motion of a gear selection shifting block through a screw rod assembly; and

and (b.2) allowing the gear selecting shifting block to drive the gear shifting head to reciprocate.

Drawings

Fig. 1 is a perspective view of a shift actuator according to a preferred embodiment of the present invention.

Fig. 2 is an exploded view of the shift actuator according to the above preferred embodiment of the present invention.

Fig. 3 is a partial perspective view of the shift actuator according to the above preferred embodiment of the present invention.

Fig. 4 is a partial operation state diagram of the gear shifting execution device according to the above preferred embodiment of the invention.

Fig. 5 is a schematic view of another partial operation state of the shift actuator according to the above preferred embodiment of the present invention.

Fig. 6 is a schematic view of the application state of the gear shift execution device according to the above preferred embodiment of the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and thus the above terms are not to be construed as limiting the present invention.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

Referring to fig. 1 to 6 of the drawings of the specification of the present invention, a gear shifting actuating device 100 according to a preferred embodiment of the present invention is disclosed and illustrated in the following description, wherein the gear shifting actuating device 100 is applied to a transmission case 200, and the gear shifting actuating device 100 can automatically control the transmission case 200 to allow the agricultural machine to automatically select and shift gears, thus allowing the agricultural machine to operate in a complicated working environment and improving the automation level of the agricultural machine.

Specifically, the shift actuator 100 includes a shift actuator 10, a select actuator 20, and a shift finger 30, wherein the shift finger 30 is drivably coupled to the shift actuator 10 to allow the shift finger 30 to be driven by the shift actuator 10 to effect a shift, and the shift finger 30 is drivably coupled to the select actuator 20 to allow the shift finger 30 to be driven by the select actuator 20 to effect a select. The transmission case 200 has two shift shafts 201, wherein each shift shaft 201 of the transmission case 200 corresponds to a different gear of the agricultural machine, for example, a high gear, a low gear, a neutral gear, a reverse gear, etc., respectively, correspond to different shift shafts 201 of the transmission case 200, wherein each shift shaft 201 of the transmission case 200 can be respectively connected to the shift knob 30 of the shift actuating device 100 in a driving manner. In other words, the shift rod 30 of the shift actuator 100 can alternatively drive one of the two shift shafts 201 of the transmission 200, wherein the shift driver 10 can drive the shift rod 30 to move back and forth on one of the shift shafts 201 of the transmission 200 to realize automatic shifting, and the gear selection driver 20 can drive the shift rod 30 to switch from one of the shift shafts 201 of the transmission 200 to the other of the shift shafts 201 to realize automatic gear selection, in such a way that when the power of the agricultural machinery is insufficient, the gear is automatically shifted down to increase the torque, and correspondingly, when the power of the agricultural machinery is sufficient, the gear is automatically shifted up to increase the speed.

More specifically, referring to fig. 2 to 5, the shift driver 10 includes a shift motor 11, a speed reducer 12, and a reduction gear set 13, wherein the speed reducer 12 is mounted to the shift motor 11, and the speed reducer 12 has a shift power output shaft 121, wherein reduction gears of the reduction gear set 13 are engaged with each other, and one of the reduction gears of the reduction gear set 13 is mounted to the shift power output shaft 121 of the speed reducer 12. The shift block 30 comprises a block body 31 and a block gear 32 mounted to the block body 31, wherein one of the reduction gears of the reduction gear set 13 is engaged with the block gear 32 of the shift block 30.

In this particular example of the gear change actuator 100 shown in fig. 1 to 6, the reduction gear set 13 is composed of two reduction gears, one of which is defined as a driving reduction gear 131, the other of which is defined as a transmission reduction gear 132, and the transmission reduction gear 132 is engaged with the driving reduction gear 131, wherein the driving reduction gear 131 is mounted to the gear change power output shaft 121 of the reduction gear 12, wherein the dial gear 32 of the gear change dial 30 is engaged with the transmission reduction gear 132. It should be noted that the manner in which the driving reduction gear 131 is mounted on the shifting power output shaft 121 of the speed reducer 12 is not limited in the shift execution device 100 of the present invention, and the driving reduction gear 131 may be driven by the shifting power output shaft 121 of the speed reducer 12 to synchronously rotate, for example, the driving reduction gear 131 and the shifting power output shaft 121 of the speed reducer 12 may be in a key connection.

Preferably, the shift gates 30 are held at one side of the reduction gear 12 in such a manner that the gate gear 32 of the shift gate 30 corresponds to the driving reduction gear 131 of the reduction gear set 13, and the transmission reduction gear 132 of the reduction gear set 13 is disposed to simultaneously engage with the driving reduction gear 131 and the gate gear 32 of the shift gate 30, in such a manner that the size of the shift actuator 100 can be miniaturized and lightened.

When the shift motor 11 is energized to output power in a rotating manner, the speed reducer 12 can reduce the rotation speed of the shift motor 11 and further output power through the shift power output shaft 121 of the speed reducer 12, to bring the driving reduction gear 131 mounted to the shifting power output shaft 121 of the reduction gear unit 12 into synchronous rotation, wherein the rotation speed can be further reduced when the driving reduction gear 131 drives the dial gear 32 of the shift dial 30 to rotate through the transmission reduction gear 132 to drive the dial main body 31 of the shift dial 30 to synchronously rotate, the reduction gear set 13 thus transmits power to the shift knob 30 through multi-stage gear reduction and torque increase, to effect rotation of the shift finger 30 such that the shift finger 30 can be driven to move back and forth on one of the shift shafts 201 of the transmission 200 to effect automatic shifting.

With continued reference to fig. 2 to 5, the shift actuator 100 further includes a shift angle sensor 40, wherein the shift angle sensor 40 is mounted to the active reduction gear 131 of the reduction gear set 13 of the shift actuator 10 to allow the shift angle sensor 40 to monitor the rotation angle of the tap body 31 of the shift tap 30 by monitoring the rotation angle of the active reduction gear 131, so that the shift actuator 100 can achieve precise control of shifting.

With continued reference to fig. 1-6, the gear selection driver 20 includes a gear selection motor 21, a lead screw assembly 22, and a gear selection dial 23, wherein the lead screw assembly 22 is drivably connected to the gear selection motor 21, the gear selection dial 23 is drivably connected to the lead screw assembly 22, and wherein the dial body 31 of the gear shift dial 30 is drivably connected to the gear selection dial 23 of the gear selection driver 20. The lead screw assembly 22 is used for converting the rotation motion of the gear selecting motor 21 into the reciprocating motion of the gear selecting dial 23, so as to allow the gear selecting dial 23 to dial the dial body 31 of the gear shifting dial 30 to synchronously reciprocate, thereby converting the gear shifting dial 30 from one gear shifting shaft 201 to the other gear shifting shaft 201 of the gearbox 200 to realize automatic gear selection.

Specifically, the gear selecting motor 21 has a gear selecting power output shaft 211, wherein the screw assembly 22 includes a screw rod 221 and a screw sleeve 222 sleeved on the screw rod 221, the screw rod 221 is installed on the gear selecting power output shaft 211 of the gear selecting motor 21, and the gear selecting dial 23 is installed on the screw sleeve 222. When the gear selecting motor 21 is powered to allow the gear selecting power output shaft 211 to output power in a rotating manner, the lead screw 221 can be driven to synchronously rotate, so that the lead screw 221 can drive the screw sleeve 222 to drive the gear selecting shifting block 23 to synchronously move away from or close to the gear selecting motor 21, so that the lead screw 221 and the screw sleeve 222 of the lead screw assembly 22 can be matched with each other to convert the rotating motion of the gear selecting power output shaft 211 of the gear selecting motor 21 into the reciprocating motion of the gear selecting shifting block 23, so that the gear shifting block 30 is converted from one gear shifting shaft 201 to the other gear shifting shaft 201 of the gearbox 200 to realize automatic gear selection.

More specifically, the gear-selecting shifting block 23 includes a shifting block main body 231 and a shifting arm 232 extending outward from the shifting block main body 231, wherein the shifting block main body 231 is disposed on the thread sleeve 222 of the screw rod assembly 22 to allow the thread sleeve 222 of the screw rod assembly 22 to drive the shifting block main body 231 to move synchronously and at the same amplitude. Preferably, the dial body 231 and the thread bushing 222 are of a unitary structure. Optionally, the dial block body 231 and the screw sleeve 222 are of a split structure and are mounted to each other. The dial body 31 of the gear shifting dial 30 has an annular slot 311, and the dial arm 232 of the gear selecting dial 23 extends to and is held in the annular slot 311 of the dial body 31, so that on one hand, when the gear shifting dial 30 is driven by the gear shifting driver 10 to make a rotational motion, the dial arm 232 of the gear selecting dial 23 can be reliably held in the annular slot 311 of the dial body 31 of the gear shifting dial 30, and on the other hand, when the gear selecting motor 21 drives the gear selecting dial 23 to make a reciprocating motion through the screw rod assembly 22, the dial arm 232 of the gear selecting dial 23 can drive the gear shifting dial 30 to make a reciprocating motion synchronously and at the same amplitude. In the specific example of the shift actuator 100 shown in fig. 1 to 6, the arm 232 of the gear selection member 23 has a C-shaped retaining groove 2321 to allow the portion of the lever body 31 for forming the annular locking groove 311 to be retained in the retaining groove 2321 of the arm 232, so that when the gear selection member 23 is driven to reciprocate, the arm 232 of the gear selection member 23 can drive the gear selection member 30 to reciprocate synchronously and at the same amplitude.

With continued reference to fig. 2-5, the shift actuator 100 further includes a sensor rocker arm 50 and a gear selection angle sensor 60, wherein the sensor rocker arm 50 includes a rocker cross bar 51, a rocker arm upper section 52 extending upwardly from one end of the rocker cross bar 51, and a rocker arm lower section 53 extending downwardly from the other end of the rocker cross bar 51, wherein the paddle body 231 has a slide slot 2310, the rocker arm upper section 52 of the sensor rocker arm 50 is slidably mounted to the slide slot 2310 of the paddle body 231, wherein the gear selection angle sensor 60 is mounted to the rocker arm lower section 53 of the sensor rocker arm 50, and the rocker arm lower section 53 of the sensor rocker arm 50 is configured to be capable of only rotational movement. When the gear selecting dial 23 is driven to reciprocate to allow the dial arm 232 of the gear selecting dial 23 to drive the gear shifting dial 30 to synchronously and reciprocally move with the same amplitude, the dial body 231 of the gear selecting dial 23 can drive the rocker arm upper section 52 of the sensor rocker arm 50 and the rocker arm cross rod 51 to rotate with the rocker arm lower section 53 as a rotating shaft, so that the gear selecting angle sensor 60 can monitor the motion amplitude (displacement amplitude) of the gear shifting dial 30 by monitoring the rotating angle of the rocker arm lower section 53 of the sensor rocker arm 50, and the gear shifting execution device 100 can realize accurate control of gear selection.

Preferably, the position of the shift knob 30 is determined by the shift angle sensor 40 and the gear selection angle sensor 60 when the shift actuator 100 is first adjusted, so that the shift actuator 100 can ensure accurate control of shifting and gear selection to ensure reliability and stability of the power system of the agricultural machine.

With continued reference to fig. 1-6, the shift actuator 100 further includes a housing 70, wherein the housing 70 includes a main housing 71 and a housing cover 72 mounted to the main housing 71 and an in-housing space 73 formed between the main housing 71 and the housing cover 72.

Specifically, the main housing 71 includes a housing wall 711 and a housing wall 712, and has a cavity 713, an opening 714, a first communication passage 715 and a second communication passage 716, wherein the housing wall 712 integrally extends around the housing wall 711 to form the cavity 713 between the housing wall 712 and the housing wall 711, and the housing wall 712 defines the opening 714 communicating with the cavity 713, wherein the first communication passage 715 and the second communication passage 716 respectively communicate with the cavity 713 at different positions of the housing wall 711. The speed reducer 12 is mounted to the housing wall 711 of the main housing 71, and the shifting power output shaft 121 of the speed reducer 12 extends to the cavity 713 of the main housing 71 through the first communication passage 715, wherein the driving reduction gear 131 is rotatably held in the cavity 713 of the main housing 71. Preferably, the driving reduction gear 131 is rotatably mounted to the main housing 71 through a bearing, thus allowing the driving reduction gear 131 to be securely held at a predetermined position of the cavity 713 of the main housing 71.

One end portion of the tap body 31 of the shift tap 30 extends to the outside of the housing 70 through the second communication passage 716 of the main housing 71 in such a manner that the tap gear 32 of the shift tap 30 is held in the cavity 713 of the main housing 71 so as to be able to be mounted to the transmission case 200. Preferably, the dial body 31 of the shift dial 30 is rotatably mounted to the main housing 71 by one or two bearings, which allows the dial gear 32 of the shift dial 30 to be securely retained in a predetermined position in the cavity 713 of the main housing 71.

The transmission reduction gear 132 of the reduction gear set 13 of the shift actuator 10 is held between the drive reduction gear 131 and the dial gear 32, and the transmission reduction gear 132 is meshed with the drive reduction gear 131 and the dial gear 32, respectively, so that the transmission reduction gear 132 is securely held at the preset position of the cavity 713 of the main housing 71.

The housing cover 72 has a third communication passage 721, wherein the third communication passage 721 of the housing cover 72 communicates with the housing inside space 73 when the housing cover 72 is mounted to the main housing 71 to close the opening 714 of the main housing 71, and corresponds to the first communication passage 715 of the main housing 71, wherein the shift angle sensor 40 is mounted to the housing cover 72, and a part of the shift angle sensor 40 is mounted to the active reduction gear 131 by extending to the housing inside space 73 of the housing 70 through the third communication passage 721 of the housing cover 72.

The housing cover 72 further has a fourth communication passage 722, the fourth communication passage 722 is communicated with the housing inner space 73, wherein the gear selecting motor 21 is mounted to the housing cover 72, and the gear selecting power output shaft 211 of the gear selecting motor 21 extends to the housing inner space 73 of the housing 70 through the fourth communication passage 722 of the housing cover 72, wherein the wire housing assembly 22 and the gear selecting dial 23 are held at predetermined positions in the housing inner space 73 of the housing 70, and the lead screw 221 of the wire housing assembly 22 is drivably mounted to the gear selecting power output shaft 211 of the gear selecting motor 21, and the dial body 31 of the shift dial 30 is drivably mounted to the dial arm 232 of the gear selecting dial 23. Preferably, the lead screw assembly 22 is rotatably mounted to the main housing 71 by a bearing, which allows the lead screw assembly 22 to be securely held in a predetermined position within the housing interior space 73 of the housing 70.

Further, the main housing 71 has a fifth communication passage 717, the fifth communication passage 717 communicates with the cavity 713 at the casing wall 712, wherein the gear selection angle sensor 60 is mounted on the casing wall 712 of the main housing 71, and a portion of the gear selection angle sensor 60 extends to the casing space 73 of the casing 70 through the fifth communication passage 717 of the main housing 71 and is mounted on the lower rocker arm section 53 of the sensor rocker arm 50. To ensure that the lower rocker arm section 53 of the sensor rocker arm 50 is configured to be capable of only rotational movement, the lower rocker arm section 53 of the sensor rocker arm 50 is rotatably mounted to the housing wall 712 of the main housing 71. Preferably, the rocker arm lower section 53 of the sensor rocker arm 50 is rotatably mounted to the housing wall 712 of the main housing 71 by a bearing.

Referring to fig. 4 to 6, in the automatic gear shifting, the power is supplied to the shift motor 11 to allow the shift motor 11 to output power in a rotating manner, the speed reducer 12 can reduce the rotation of the shift motor 11 and further output power through the shift power output shaft 121 of the speed reducer 12 to drive the driving reduction gear 131 mounted on the shift power output shaft 121 of the speed reducer 12 to rotate synchronously, wherein the rotation speed can be further reduced when the driving reduction gear 131 drives the dial gear 32 of the shift dial 30 to rotate through the transmission reduction gear 132 to drive the dial body 31 of the shift dial 30 to rotate synchronously, so that the shift dial 30 can be driven to move back and forth on one of the shift shafts 201 of the transmission 200 to realize the automatic gear shifting. Meanwhile, the shift sensor 40 can monitor the rotation angle of the dial body 31 of the shift dial 30 by monitoring the rotation angle of the active reduction gear 131, so that the shift actuator 100 can precisely control the shift.

Accordingly, when the gear is automatically selected, the power is supplied to the gear selecting motor 21 to allow the gear selecting motor 21 to output power in a rotating manner, the lead screw 221 and the screw sleeve 222 of the lead screw assembly 22 can cooperate with each other to convert the rotating motion of the gear selecting motor 21 into the reciprocating motion of the gear selecting dial 23 disposed on the screw sleeve 222, at this time, the dial arm 232 of the gear selecting dial 23 can drive the dial body 31 of the gear shifting dial 30 to reciprocate, so that the gear shifting dial 30 can be driven to be converted from one gear shifting shaft 201 to the other gear shifting shaft 201 of the transmission 200, and the automatic gear selection is realized. Meanwhile, the gear selection angle sensor 60 can monitor the movement amplitude (displacement amplitude) of the gear shift knob 30 by monitoring the rotation angle of the rocker arm lower section 53 of the sensor rocker arm 50, so that the gear shift execution device 100 can realize accurate control of gear selection.

(a) allowing the gear shift actuator 10 to drive the gear shift shifting knob 30 to move back and forth on one gear shift shaft 201 of the transmission case 200 to realize automatic gear shifting; and

(b) allowing the gear selection driver 20 to drive the gear shifting dial 30 to shift from one gear shifting shaft 201 to another gear shifting shaft 201 of the transmission case 200 to realize automatic gear selection.

Preferably, the step (b) further comprises the steps of:

(b.1) converting the rotary motion of the gear selecting motor 21 into the reciprocating motion of the gear selecting shifting block 23 through the screw rod assembly 22; and

(b.2) allowing the gear selection dial 23 to drive the gear shifting dial 30 to reciprocate.

It will be appreciated by persons skilled in the art that the above embodiments are only examples, wherein features of different embodiments may be combined with each other to obtain embodiments which are easily conceivable in accordance with the disclosure of the invention, but which are not explicitly indicated in the drawings.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.

Claims

1. A gear shift actuator for use with a transmission having two shift shafts, comprising:

a shift actuator;

a gear selection driver; and

2. The shift actuator according to claim 1, wherein the shift driver includes a drive motor, a reduction gear mounted to the drive motor, a drive reduction gear mounted to a shift power output shaft of the reduction gear, and a transmission reduction gear engaged with the drive reduction gear, wherein the shift knob includes a knob body and a knob gear provided to the knob body, the knob gear being engaged with the transmission reduction gear.

3. The shift actuator of claim 1, wherein the shift actuator includes a shift motor, a lead screw assembly, and a shift dial, the lead screw assembly including a lead screw and a bushing that is fitted around the lead screw, the lead screw being mounted to a shift power output shaft of the shift motor, the shift dial being disposed on the bushing, and wherein the shift dial is drivably disposed on the shift dial.

4. The shift actuator of claim 2 wherein the shift actuator includes a shift motor, a lead screw assembly and a shift select dial, the lead screw assembly including a lead screw and a bushing that is received by the lead screw, the lead screw being mounted to a shift select power output shaft of the shift motor, the shift select dial being disposed on the bushing, wherein the dial body of the shift select dial is drivably mounted to the shift select dial.

5. The shift implement of claim 4, wherein the gear selector knob has a knob arm and the knob body has a ring slot, wherein the knob arm of the gear selector knob extends to and is retained in the ring slot of the knob body.

6. The shift actuating device according to claim 5, wherein the lever arm has a "C" -shaped retaining groove, and a portion of the dial body for forming the ring-shaped catching groove is retained in the retaining groove of the lever arm.

7. The shift actuator of claim 5, further comprising a shift angle sensor mounted to the active reduction gear.

8. The shift actuator of claim 5, further comprising a sensor rocker arm and a select angle sensor, wherein the sensor rocker arm includes a rocker cross bar, a rocker upper section extending upwardly from one end of the rocker cross bar, and a rocker lower section extending downwardly from the other end of the rocker cross bar, wherein the rocker upper section is slidably mounted to the runner of the select paddle, the select angle sensor is mounted to the rocker lower section, and the rocker lower section is configured to rotate only.

9. The shift actuator of claim 7, further comprising a sensor rocker arm and a select angle sensor, wherein the sensor rocker arm includes a rocker cross bar, a rocker upper section extending upwardly from one end of the rocker cross bar, and a rocker lower section extending downwardly from the other end of the rocker cross bar, wherein the rocker upper section is slidably mounted to the runner of the select paddle, the select angle sensor is mounted to the rocker lower section, and the rocker lower section is configured to rotate only.

10. The shift actuator according to claim 9, further comprising a housing, wherein the housing has a housing interior space, a first communicating passage, a second communicating passage, a third communicating passage, a fourth communicating passage, and a fifth communicating passage, the first communicating passage and the second communicating passage communicate with the housing interior space at a housing wall of the housing, the third communicating passage and the fourth communicating passage communicate with the housing interior space at a housing cover of the housing, and the third communicating passage corresponds to the first communicating passage, the fifth communicating passage communicates with the housing interior space at a housing wall of the housing, wherein the speed reducer is mounted to the housing wall in such a manner that the shift power output shaft of the speed reducer extends to the housing interior space through the first communicating passage, wherein the shift angle sensor extends to the housing interior space through the third communicating passage with a portion of the shift angle sensor The case inner space and being mounted to the drive reduction gear is mounted to the case cover, wherein the dial body of the shift dial extends to the outside of the case through the second communication passage, wherein the shift select motor is mounted to the case cover in such a manner that the shift select power output shaft of the shift select motor extends to the case inner space through the fourth communication passage, wherein the shift select angle sensor is mounted to the case wall in such a manner that a part of the shift select angle sensor extends to the case inner space through the fifth communication passage and is mounted to the rocker arm lower section, wherein the rocker arm lower section is rotatably mounted to the case wall such that the rocker arm lower section is set to make only rotational movement.

11. A gear shifting method, characterized by comprising the steps of:

12. The gear shifting method of claim 11, wherein the step (b) further comprises the steps of: