CN111720537A - Two-gear speed reducer for integrated electronic parking - Google Patents
Two-gear speed reducer for integrated electronic parking Download PDFInfo
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- CN111720537A CN111720537A CN202010569989.3A CN202010569989A CN111720537A CN 111720537 A CN111720537 A CN 111720537A CN 202010569989 A CN202010569989 A CN 202010569989A CN 111720537 A CN111720537 A CN 111720537A
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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
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
- F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
- F16H37/0806—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with a plurality of driving or driven shafts
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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
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
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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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/32—Gear shift yokes, e.g. shift forks
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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
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
- F16H63/3425—Parking lock mechanisms or brakes in the transmission characterised by pawls or wheels
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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
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
- F16H63/3425—Parking lock mechanisms or brakes in the transmission characterised by pawls or wheels
- F16H63/3433—Details of latch mechanisms, e.g. for keeping pawls out of engagement
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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
- F16H2057/02086—Measures for reducing size of gearbox, e.g. for creating a more compact transmission casing
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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
- F16H2057/02095—Measures for reducing number of parts or components
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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
- F16H2061/326—Actuators for range selection, i.e. actuators for controlling the range selector or the manual range valve in the transmission
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The invention provides an integrated electronic parking two-gear speed reducer, which comprises: the gear shifting device comprises an input shaft assembly, a middle shaft assembly, a differential assembly, a gear shifting and speed reducing assembly, an execution motor, a gear shifting assembly and a parking assembly; the gear shift assembly includes: the gear shifting hub rod, the gear shifting hub gear and the like are fixedly connected together, the gear shifting hub gear and the gear shifting hub are sleeved on the gear shifting hub rod, and the gear shifting speed reducing assembly is respectively connected with the execution motor and the gear shifting hub gear. The parking subassembly includes: the integrated electronic parking two-gear speed reducer comprises an execution motor, a gear shifting speed reducing assembly, a gear shifting hub, a parking cam plate, a parking spring seat and the like, wherein the parking spring seat is fixedly connected with a gear shifting hub.
Description
Technical Field
The invention relates to the technical field of automobile transmissions, in particular to an integrated electronic parking two-gear speed reducer.
Background
In the increasingly common current of automobiles, manual-gear automobiles rapidly slide down, and automatic-gear automobiles are more and more favored by end users. Therefore, the development of automatic transmission automobiles is the main direction in the future. Increasingly stringent emission standards prevent the development of traditional automobiles, and the development of pure electric automobiles is the only way for manufacturers of all large automobiles. The traditional pure electric vehicle is influenced by the battery endurance mileage and cannot be accepted by most users, and the increase of the endurance mileage is a main research direction for developing the pure electric vehicle at present. The battery technology is difficult to have a great breakthrough in a short time, so that the design of a two-gear speed reducer is a main solution measure for various current large automobile manufacturers.
One two-gear speed reducer is required to be provided with a set of gear shifting mechanism and a corresponding executing mechanism; in consideration of complex road conditions and safety, a parking mechanism needs to be designed to ensure the safety of the vehicle during parking, and an actuating mechanism also needs to be designed. Therefore, the cost is increased and the space is limited, so that in order to solve the above problems, how to provide a two-speed reducer integrating a gear shifting function and a parking function is advantageous and has a wide market prospect.
Disclosure of Invention
The invention aims to provide an integrated electronic parking two-gear speed reducer to overcome the defects in the prior art.
To achieve the above object, the present invention provides an integrated electronic parking two-speed reducer, comprising: the gear shifting and speed reducing assembly comprises a gear shifting and speed reducing assembly, an execution motor, a gear shifting assembly and a parking assembly;
the shift assembly includes: the gear shifting hub gear and the gear shifting hub are fixedly connected together, the gear shifting hub gear and the gear shifting hub are sleeved on the gear shifting hub rod, after the execution motor is decelerated and torque-increased through the gear shifting and decelerating assembly, the gear shifting hub of the gear shifting assembly is driven to rotate, the rotation of the gear shifting hub drives the gear shifting fork to move axially through an annular cam curve groove of the gear shifting hub, the gear shifting fork is sleeved on the gear shifting and shifting rod, and when the gear shifting fork moves on the gear shifting and shifting rod, the first gear and the second gear are switched;
the shift speed reduction assembly includes: the gear shifting mechanism comprises a reduction pinion and a reduction gearwheel, wherein the reduction pinion is meshed with a gear shifting hub gear of the gear shifting assembly, and the reduction gearwheel is meshed with an output shaft of the execution motor;
the parking assembly includes: the parking device comprises a parking pawl, a return spring frame, a return spring, a parking cam plate and a parking spring seat, wherein the parking spring seat is fixedly connected with a gear shifting hub, the parking spring is installed between the parking spring seat and the parking cam plate, the parking cam plate is sleeved on a gear shifting hub rod, the return spring frame is installed on the gear shifting hub rod and a gear shifting fork rod, the parking pawl is sleeved on the gear shifting fork rod, the parking spring is installed between the return spring frame and the parking pawl, the parking spring is sleeved on the gear shifting fork rod, when the parking spring seat rotates along with the gear shifting hub, the parking spring seat pushes the parking cam plate to rotate by compressing the parking spring, the parking cam plate contacts the parking pawl by rotating, so that the parking pawl rotates around the center of the gear shifting fork rod to perform parking gear shifting, and after the parking cam plate rotates reversely, the parking pawl performs parking gear picking under the action of the return spring.
As an improvement of the integrated electronic parking two-speed reducer of the present invention, the two-speed reducer further includes: the input shaft assembly, the middle shaft assembly and the differential assembly;
the input shaft assembly, the middle shaft assembly and the differential assembly are fixed on a box body through bearings, the gear shifting assembly and the parking assembly are connected to the box body through the gear shifting fork rod and the gear shifting hub rod in a pivoting mode, the gear shifting and speed reducing assembly is connected to the box body through the speed reducing gear shaft in a pivoting mode, and the executing motor is installed on the outer side of the box body.
As an improvement of the integrated electronic parking two-gear speed reducer of the invention, the input shaft assembly comprises: the input shaft, the input shaft left bearing, the input shaft sleeve, the input shaft second gear and the input shaft right bearing;
the input shaft left bearing, the input shaft sleeve, the input shaft second gear and the input shaft right bearing are sequentially sleeved on the input shaft.
As an improvement of the integrated electronic parking two-gear speed reducer, the intermediate shaft assembly comprises: the parking device comprises a left intermediate shaft bearing, a main intermediate shaft reduction gear, a second intermediate shaft gear, a synchronizer assembly, a first intermediate shaft gear, a parking gear and a right intermediate shaft bearing, wherein the main intermediate shaft reduction gear is integrally formed on the intermediate shaft.
As an improvement of the integrated electronic parking two speed reducer of the present invention, the differential assembly comprises: the differential mechanism comprises a differential mechanism left bearing, a differential mechanism shell, a half axle gear, a planetary gear shaft, a differential mechanism gear and a differential mechanism right bearing;
differential left bearing set up in differential casing one end, differential right bearing set up in the differential casing other end, the planet gear axle is worn to arrange in the differential casing, side gear and planetary gear are located in the differential casing, planetary gear is located between side gear and the planet gear axle, differential gear install in the differential casing outside, and can with the meshing of jackshaft final reduction gear mutually.
Compared with the prior art, the invention has the beneficial effects that: in the integrated electronic parking two-gear speed reducer, the gear shifting motor is connected with the gear on the gear shifting hub through the reduction gear set, the gear shifting hub is driven to rotate after the reduction and torque increase of the reduction gear set, and the gear shifting hub and the parking spring seat of the parking assembly are integrated, so that the two-gear speed reducer and the electronic parking function can be realized simultaneously, the arrangement space is reduced, the number of parts is reduced, and the cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic perspective view of an embodiment of an integrated electronic parking two-speed retarder according to the present invention;
FIG. 2 is a schematic plan view of the input shaft assembly of FIG. 1;
FIG. 3 is a plan view of the intermediate shaft assembly of FIG. 1;
FIG. 4 is a cross-sectional view of the differential assembly of FIG. 1;
FIG. 5 is a perspective view of the shift assembly of FIG. 1;
FIG. 6 is a perspective view of the park assembly of FIG. 1;
FIG. 7 is a diagrammatic illustration of the drive principle of the two speed reducer of FIG. 1;
FIG. 8 is a shift schedule for the two speed reduction of the present invention;
FIG. 9 is a schematic illustration of the park position of the two speed retarder of the present invention;
FIG. 10 is a schematic diagram of the shift and park linkage of the two speed reduction gear of the present invention.
Detailed Description
The present invention is described in detail below with reference to various embodiments, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should be able to make modifications and substitutions on the functions, methods, or structures of these embodiments without departing from the scope of the present invention.
As shown in fig. 1, the integrated electronic parking two-speed retarder according to an embodiment of the present invention includes: the transmission comprises an input shaft assembly 1, an intermediate shaft assembly 2, a differential assembly 3, a gear shifting and speed reducing assembly 4, an executing motor 5, a gear shifting assembly 6 and a parking assembly 7. The input shaft assembly 1, the middle shaft assembly 2 and the differential mechanism assembly 3 realize the power transmission function of the two-gear speed reducer; the execution motor 5, the reduction gear set 4 and the gear shifting assembly 6 realize gear switching of the two-gear speed reducer; the execution motor 5, the gear shifting and speed reducing assembly 4 and the parking assembly 7 realize the parking function of the two-gear speed reducer; the gear shifting function and the parking function share one set of the actuating motor 5 and the gear shifting and speed reducing assembly 4, which is the key point of the invention.
The input shaft 8 assembly 1 comprises an input shaft 8, an input shaft left bearing 9, an input shaft sleeve 10, an input shaft second gear 11 and an input shaft right bearing 12 (see figure 2). The first gear machined on the input shaft 8 is between the second gear 11 of the input shaft and the right bearing 12 of the input shaft. The first gear and the second gear are used for power transmission, the left bearing and the right bearing are used for positioning the box body, and the shaft sleeve is used for axially positioning the left bearing and the second gear.
The intermediate shaft assembly 2 includes: a left intermediate shaft bearing 13, an intermediate shaft main reduction gear 14 (processed on the intermediate shaft), an intermediate shaft second gear 15, a synchronizer assembly 16, an intermediate shaft first gear 17, a parking gear 18 and an intermediate shaft right bearing 19 (see figure 3). The left bearing and the right bearing of the intermediate shaft are fixed on the box body, the main reduction gear is meshed with the differential gear to transmit power, the first gear and the second gear are idle gears, and the synchronizer assembly 16 is used for gear switching between the first gear and the second gear.
The differential assembly 3 includes: differential left bearing 20, differential case 21, side gear 22, planetary gear 23, planetary gear shaft 24, differential gear 25, and differential right bearing 26 (see fig. 4). The left and right bearings of the differential are fixed on the box body, the differential gear 25 is meshed with the intermediate shaft main reduction gear 14 to transmit power, the splines on the half shaft gear 22 are meshed with the wheel transmission shafts to transmit the power of the differential to the left and right wheels respectively, and the differential speed of the two wheels can be realized when the vehicle turns.
In this way, the power transmission is mainly completed by the input shaft 8 assembly 1, the intermediate shaft assembly 2 and the differential assembly 3, and the power transmission diagram is shown in the attached figure 7. The front end of the input shaft 8 is connected with a power motor, the power of the power motor is transmitted to a first gear and a second gear of the input shaft 8 and further transmitted to a first gear and a second gear on the intermediate shaft, after the intermediate shaft synchronizer assembly 16 is connected with the first gear, the power is transmitted to a main speed reduction gear from the first gear 17 of the intermediate shaft and then transmitted to the differential assembly 3, and then transmitted to left and right wheels of a vehicle after being subjected to differential by the differential assembly 3, and the second gear is the same.
The executing motor 5 is a motor with a gear at the front end of a motor shaft, and the gear shifting and speed reducing assembly 4 is a gear set formed by fixedly connecting a pair of large and small gears with a shaft. The executing motor 5 and the gear shifting and speed reducing assembly 4 are mainly used for providing parking and gear shifting power, the executing motor 5 provides rotating power and torque, and the gear shifting and speed reducing assembly 4 reduces and increases the speed and the torque of the motor to meet the torque and the rotating speed required by gear shifting and parking.
The shift assembly 6 includes: a shift fork 27, a shift fork lever 28, a shift hub lever 29, a shift hub 30, a shift hub gear 31 (see fig. 6). The shift fork 27 is journaled in the countershaft synchronizer assembly 16 to effect a first gear shift and a second gear shift as the shift fork 27 moves on the shift fork rod 28. The shift hub gear 31 is fixedly connected to the shift hub 30, and the shift hub gear 31 is engaged with the shift reduction assembly 4 to transmit the motor power to the shift hub 30. The shift hub 30 converts the rotational power into a shifting force of the shift fork 27 moving up and down, and the shift hub 30 freely rotates on the shift hub rod 29.
The gear shift speed reduction assembly includes: a reduction pinion 40, a reduction gearwheel 41 and a shift reduction shaft 39. The reduction pinion 40 and the reduction gearwheel 41 are coaxially sleeved on the gear shifting reduction shaft 39 and are fixedly connected together. The reduction pinion 40 meshes with the shift hub gear 31 of the shifting unit 6, and the reduction gearwheel 41 meshes with the output shaft of the actuator motor 5.
The parking assembly 7 includes: a parking pawl 32, a return spring holder 33, a return spring 34, a parking spring 35, a parking cam plate 36, a parking spring seat 37 (see fig. 6). The parking gear 18 of the intermediate shaft assembly 2 and the shift fork lever 28, the shift hub lever 29 of the common shift assembly 6 are required to achieve the parking function. The parking pawl 32 is clamped in the parking gear 18 to achieve a parking function, the return spring 34 and the return spring frame 33 achieve the return of the parking pawl 32 when the vehicle is not parked, the parking spring seat 37 rotates to compress the parking spring 35, and the parking spring 35 pushes the parking cam plate 36 to rotate to achieve the parking gear of the parking pawl 32.
When the gears are switched:
taking the first gear for example, the shift fork 27 is in the neutral position (see fig. 8). When a gear is engaged, the motor rotates and is transmitted to the gear shifting drum, the gear shifting drum rotates as shown in the figure, at the moment, the shifting fork head moves to a gear position along the groove on the gear shifting drum, so that the rotating power of the gear shifting motor is converted into the engaging force of the up-and-down movement of the gear shifting fork 27, and the gear shifting is realized.
During the parking function: the implementation of the parking function is controlled by a parking cam plate 36 (see fig. 9). The protrusions of the parking cam plate 36 abut the parking pawl 32 such that the parking pawl 32 snaps into the splines of the parking gear 18. The parking gear 18 is locked by the parking pawl 32 and cannot rotate, the intermediate shaft assembly 2 of the transmission is locked, and the differential assembly 3 and the wheels are further locked to achieve the aim of parking the vehicle. When the parking cam plate 36 is rotated in the direction shown, the parking pawl 32 will spring out under the action of the return spring 34, releasing the parking gear 18 and the vehicle resumes motion releasing the parking.
Parking and two-gear integration:
the parking and two-gear integration is shown in figure 10. The gear shifting drum has a neutral gear state and a gear state, when the shifting fork is in the gear, the speed reducer is in the first gear or the second gear, and the vehicle cannot use the parking function when running; when the shifting fork is in a neutral position, the transmission has no gear, and the parking function can be used after the vehicle stops. The parking cam plate 36 also has a parking surface and a non-parking surface, and when the parking pawl 32 contacts the parking surface of the parking cam plate 36, the vehicle is locked and cannot be driven without gear shifting, and when the parking pawl 32 contacts the non-parking surface of the parking cam plate 36, the vehicle can be driven and gear shifting normally. Therefore, the parking working surface of the parking cam plate 36 corresponds to the shift neutral position, the non-parking working surface of the parking cam plate 36 corresponds to the shift position, and the parking spring seat 37 is fixedly connected with the shift hub 30 through the fixing bolt 38, so that the integrated functions of non-shifting during parking and non-parking during shifting are realized.
In summary, in the integrated electronic parking two-gear speed reducer, the gear shifting motor is connected with the gear on the gear shifting hub through the gear shifting and speed reducing assembly, the gear shifting hub is driven to rotate after the gear shifting and speed reducing assembly decelerates and increases torque, and the gear shifting hub and the parking spring seat of the parking assembly are integrally arranged, so that the two-gear speed reducer and the electronic parking function can be simultaneously realized, the arrangement space is reduced, the number of parts is reduced, and the cost is reduced.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. An integrated electronic parking two-speed reducer, comprising: the gear shifting and speed reducing assembly comprises a gear shifting and speed reducing assembly, an execution motor, a gear shifting assembly and a parking assembly;
the shift assembly includes: the gear shifting hub gear and the gear shifting hub are fixedly connected together, the gear shifting hub gear and the gear shifting hub are sleeved on the gear shifting hub rod, after the execution motor is decelerated and torque-increased through the gear shifting and decelerating assembly, the gear shifting hub of the gear shifting assembly is driven to rotate, the rotation of the gear shifting hub drives the gear shifting fork to move axially through an annular cam curve groove of the gear shifting hub, the gear shifting fork is sleeved on the gear shifting and shifting rod, and when the gear shifting fork moves on the gear shifting and shifting rod, the first gear and the second gear are switched;
the shift speed reduction assembly includes: the gear shifting device comprises a reduction pinion, a reduction gearwheel and a gear shifting reduction shaft, wherein the reduction pinion is meshed with a gear shifting hub gear of the gear shifting assembly, the reduction gearwheel is meshed with an output shaft of an execution motor, and the reduction pinion, the reduction gearwheel and the gear shifting reduction shaft are fixedly connected together;
the parking assembly includes: the parking device comprises a parking pawl, a return spring frame, a return spring, a parking cam plate and a parking spring seat, wherein the parking spring seat is fixedly connected with a gear shifting hub, the parking spring is installed between the parking spring seat and the parking cam plate, the parking cam plate is sleeved on a gear shifting hub rod, the return spring frame is installed on the gear shifting hub rod and a gear shifting fork rod, the parking pawl is sleeved on the gear shifting fork rod, the parking spring is installed between the return spring frame and the parking pawl, the parking spring is sleeved on the gear shifting fork rod, when the parking spring seat rotates along with the gear shifting hub, the parking spring seat pushes the parking cam plate to rotate by compressing the parking spring, the parking cam plate contacts the parking pawl by rotating, so that the parking pawl rotates around the center of the gear shifting fork rod to perform parking gear shifting, and after the parking cam plate rotates reversely, the parking pawl performs parking gear picking under the action of the return spring.
2. The integrated electronic parking two speed reducer of claim 1 further comprising: the input shaft assembly, the middle shaft assembly and the differential assembly;
input shaft subassembly, intermediate shaft subassembly and differential mechanism subassembly link firmly on a box through the bearing, shift subassembly and parking subassembly pass through shift fork pole and the pivot of gear shift hub pole connect to on the box, the speed reduction subassembly of shifting passes through reduction gear shaft pivot connection to on the box, actuating motor installs the outside of box.
3. The integrated electronic parking two speed retarder of claim 2, wherein the input shaft assembly comprises: the input shaft, the input shaft left bearing, the input shaft sleeve, the input shaft second gear and the input shaft right bearing;
the input shaft left bearing, the input shaft sleeve, the input shaft second gear and the input shaft right bearing are sequentially sleeved on the input shaft.
4. The integrated electronic parking two-speed reducer according to claim 2, wherein the intermediate shaft assembly comprises: the parking device comprises a left intermediate shaft bearing, a main intermediate shaft reduction gear, a second intermediate shaft gear, a synchronizer assembly, a first intermediate shaft gear, a parking gear and a right intermediate shaft bearing, wherein the main intermediate shaft reduction gear is integrally formed on the intermediate shaft.
5. The integrated electronic parking two speed retarder of claim 2, wherein the differential assembly comprises: the differential mechanism comprises a differential mechanism left bearing, a differential mechanism shell, a half axle gear, a planetary gear shaft, a differential mechanism gear and a differential mechanism right bearing;
differential left bearing set up in differential casing one end, differential right bearing set up in the differential casing other end, the planet gear axle is worn to arrange in the differential casing, side gear and planetary gear are located in the differential casing, planetary gear is located between side gear and the planet gear axle, differential gear install in the differential casing outside, and can with the meshing of jackshaft final reduction gear mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010569989.3A CN111720537A (en) | 2020-06-21 | 2020-06-21 | Two-gear speed reducer for integrated electronic parking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010569989.3A CN111720537A (en) | 2020-06-21 | 2020-06-21 | Two-gear speed reducer for integrated electronic parking |
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| Publication Number | Publication Date |
|---|---|
| CN111720537A true CN111720537A (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010569989.3A Pending CN111720537A (en) | 2020-06-21 | 2020-06-21 | Two-gear speed reducer for integrated electronic parking |
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| CN (1) | CN111720537A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113028023A (en) * | 2021-04-16 | 2021-06-25 | 四川建安工业有限责任公司 | Arrangement structure of electric drive speed reducer assembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203756954U (en) * | 2013-11-07 | 2014-08-06 | 光阳工业股份有限公司 | Vehicle gear shifting mechanism |
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| CN203756954U (en) * | 2013-11-07 | 2014-08-06 | 光阳工业股份有限公司 | Vehicle gear shifting mechanism |
| CN204664397U (en) * | 2015-05-15 | 2015-09-23 | 江苏林海动力机械集团公司 | Engine mission parking lock device |
| CN206112045U (en) * | 2016-08-10 | 2017-04-19 | 河北工业大学 | Electric automobile transmission |
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| CN113028023A (en) * | 2021-04-16 | 2021-06-25 | 四川建安工业有限责任公司 | Arrangement structure of electric drive speed reducer assembly |
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