Gearbox and vehicle drive arrangement and vehicle

Abstract

The application provides a gearbox, a vehicle driving device and a vehicle, and the gearbox comprises a motor, an input shaft, a first power assembly, a second power assembly, a third power assembly, a fourth power assembly, a fourth synchronizer and an output shaft, wherein the motor is in transmission connection with the first power assembly or the second power assembly, the input shaft is in transmission connection with the output shaft through the first power assembly and the second power assembly respectively, the input shaft is selectively connected with the output shaft through the third power assembly, the fourth synchronizer and the fourth power assembly are arranged on the input shaft, and the fourth synchronizer is used for controlling the power on-off between the third power assembly and the fourth power assembly. The gearbox of the application optimizes the power transmission structure inside the gearbox, can realize multiple different gear modes, can shorten the overall length of the gearbox, can make the power assembly through which the power transmission inside the gearbox passes be less, and can improve the transmission efficiency of the gearbox.

Description

Technical Field

[0001] This invention relates to the field of vehicle component technology, and in particular to a transmission. Furthermore, this invention also relates to a vehicle drive system using the transmission, and a vehicle using the vehicle drive system. Background Technology

[0002] A gearbox is a device that changes the speed ratio and direction of motion. It is used in automobiles, tractors, ships, machine tools, and various other machines to alter the torque, speed, and direction of motion transmitted from the drive shaft to the driven shaft according to different operating conditions. Most existing gearboxes are gear-driven, typically consisting of a housing and several gear pairs.

[0003] When a gearbox is installed in a vehicle, it is generally located between the clutch and the central drive to change the driving force and speed of the vehicle (i.e., shifting gears) while keeping the engine speed and torque constant, or to allow the vehicle to reverse (i.e., change direction), or to allow the engine to stop without turning off (i.e., neutral).

[0004] With the increasing number of new energy vehicles, hybrid transmissions, as a type of transmission, can couple the power of the engine and the drive motor in a certain way and can realize the functions of shifting, reversing and neutral, thus attracting more and more attention.

[0005] However, existing hybrid transmissions are generally quite long, making their installation in vehicles difficult. Furthermore, due to their inherent structural limitations, existing hybrid transmissions struggle to meet the demands of off-road driving. Additionally, existing hybrid transmissions have fewer gears and lower transmission efficiency, making it difficult to meet the driving needs of passengers. Summary of the Invention

[0006] In view of this, the present invention aims to provide a gearbox that optimizes its internal power transmission structure and improves its performance.

[0007] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0008] A gearbox includes a motor, an input shaft, a first power assembly, a second power assembly, a third power assembly, a fourth power assembly, a fourth synchronizer for controlling the power supply between the third power assembly and the fourth power assembly, and an output shaft; the fourth synchronizer and the fourth power assembly are disposed on the input shaft; the input shaft is drivenly connected to the output shaft through the first power assembly and the second power assembly respectively; the input shaft is selectively connected to the output shaft through the third power assembly; the motor is drivenly connected to either the first power assembly or the second power assembly.

[0009] Furthermore, the first power assembly includes a first driving wheel and a second driving wheel disposed on the input shaft, a first driven wheel, a second driven wheel, and a first synchronizer disposed on the output shaft; the first driving wheel and the first driven wheel are connected in a driving transmission, and the second driving wheel and the second driven wheel are connected in a driving transmission; the first synchronizer is used to selectively connect the first driven wheel or the second driven wheel.

[0010] Furthermore, the third power assembly includes a fifth driving wheel loosely fitted on the input shaft, and a third synchronizer disposed on the input shaft, as well as a first intermediate shaft, a first intermediate wheel disposed on the first intermediate shaft, and a fifth driven wheel disposed on the output shaft; the third synchronizer is used to selectively connect the fifth driving wheel; the first intermediate wheel is connected to the fifth driving wheel and the fifth driven wheel respectively in a driving transmission.

[0011] Furthermore, the fourth power component includes a planetary gear mechanism; the sun gear of the planetary gear mechanism is located on the input shaft; the fourth synchronizer selectively connects to the ring gear / planet carrier of the planetary gear mechanism.

[0012] Furthermore, the second power assembly includes a third driving wheel and a fourth driving wheel disposed on the input shaft, a third driven wheel, a fourth driven wheel, and a second synchronizer disposed on the output shaft; the third driving wheel and the third driven wheel are connected in a driving relationship, and the fourth driving wheel and the fourth driven wheel are connected in a driving relationship; the second synchronizer is used to selectively connect the third driven wheel or the fourth driven wheel.

[0013] Furthermore, it also includes a second intermediate shaft and a second intermediate wheel disposed on the second intermediate shaft; a seventh drive wheel is disposed on the power output shaft of the motor; the second intermediate wheel is drivenly connected to the seventh drive wheel, and the second intermediate wheel is drivenly connected to the third drive wheel or the fourth drive wheel.

[0014] Furthermore, it also includes a power output shaft; a sixth driven wheel is provided on the power output shaft; a sixth driving wheel is provided on the output shaft; the sixth driving wheel and the sixth driven wheel are connected in a driving relationship.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] (1) The gearbox of the present invention, through the arrangement of the first power assembly and the second power assembly, facilitates the transmission of power from the input shaft to the output shaft. Furthermore, the power of the motor can be transmitted to the input shaft via the first or second power assembly, and further transmitted to the output shaft. Simultaneously, the arrangement of the third power assembly enables the power transmitted to the input shaft to be transmitted to the output shaft, thereby realizing the reverse gear function. In addition, the arrangement of the fourth synchronizer and the fourth power assembly allows the power transmitted to the input shaft to be transmitted to the output shaft via the fourth and third power assemblies, thereby enabling the gearbox to shift to an ultra-low speed gear.

[0017] The gearbox of the present invention, by optimizing the power transmission structure inside, can not only realize a variety of different gear modes, but also shorten the overall length of the gearbox. At the same time, it reduces the number of power transmission components and improves the transmission efficiency of the gearbox.

[0018] (2) The first power assembly includes a first driving wheel, a second driving wheel, a first driven wheel, a second driven wheel and a first synchronizer. The first driven wheel or the second driven wheel can be selectively connected through the first synchronizer to realize the transmission of power from the input shaft to the output shaft. This is convenient for arrangement and facilitates gear changes and speed adjustments.

[0019] (3) The third power assembly includes a fifth drive wheel, a third synchronizer, a first intermediate shaft, and a fifth driven wheel. It engages with the fifth drive wheel through the third synchronizer and drives the fifth drive wheel and the fifth driven wheel together to facilitate reverse gear and drive the vehicle backward.

[0020] (4) The fourth power assembly includes a planetary gear mechanism. By engaging the fourth synchronizer with the ring gear / planet carrier of the planetary gear mechanism, it is easy to realize the ultra-low speed gear of the transmission, thereby satisfying the off-road performance of the vehicle.

[0021] (5) The second power assembly includes a third driving wheel, a fourth driving wheel, a third driven wheel, a fourth driven wheel, and a second synchronizer. The third driven wheel or the fourth driven wheel can be selectively connected via the second synchronizer to transmit power from the input shaft to the output shaft. This facilitates layout and allows for gear shifting and speed adjustment. By connecting the second intermediate wheel to the third or fourth driving wheel, power from the second intermediate shaft is transmitted to the input shaft.

[0022] (6) By setting a seventh drive wheel, a second intermediate shaft and a second intermediate wheel, the power of the motor is transmitted to the input shaft through the seventh drive wheel and the second intermediate wheel, which makes it easy to drive the vehicle forward by the motor.

[0023] (7) By providing a sixth driven wheel on the power output shaft and connecting the sixth driven wheel with the sixth driving wheel, the power transmitted to the output shaft can be transmitted to the power output shaft, thereby driving the vehicle forward.

[0024] Another object of the present invention is to provide a vehicle drive device, including the gearbox as described above, as well as an engine and a control mechanism; the control mechanism is disposed between the power output end of the engine and the input shaft, and the control mechanism is used to control the power supply between the input shaft and the engine.

[0025] Furthermore, the control mechanism includes a clutch located between the power output end of the engine and the input shaft.

[0026] (1) The vehicle drive device of the present invention can control the transmission of engine power to the input shaft by placing the control mechanism between the engine power output end and the input shaft, thereby realizing multiple drive modes such as engine-only drive, motor-only drive, and engine and motor-only drive.

[0027] (2) The control mechanism includes a clutch, which can use existing standard parts, thereby reducing the overall cost of the vehicle drive system.

[0028] Meanwhile, another object of the present invention is to provide a vehicle equipped with the vehicle drive device described above.

[0029] The vehicle described in this invention, by equipping it with the aforementioned vehicle drive device, can achieve multiple drive modes such as engine-only drive, motor-only drive, and engine and motor-only drive, and is also conducive to the overall structural layout, making it easy to achieve multiple different gear modes while occupying a small space. Attached Figure Description

[0030] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0031] Figure 1 This is a schematic diagram of the gearbox in application state according to Embodiment 1 of the present invention;

[0032] Figure 2 This is a schematic diagram of the power transmission route of the gearbox in the first gear mode when the engine is driven alone, as described in Embodiment 1 of the present invention.

[0033] Figure 3 This is a schematic diagram of the power transmission route of the gearbox in the second gear mode when the engine is driven alone, as described in Embodiment 1 of the present invention.

[0034] Figure 4 This is a schematic diagram of the power transmission route of the gearbox in the third gear mode when the engine is driven alone, as described in Embodiment 1 of the present invention.

[0035] Figure 5 This is a schematic diagram of the power transmission route of the gearbox in fourth gear mode when the engine is driven alone, as described in Embodiment 1 of the present invention.

[0036] Figure 6 This is a schematic diagram of the power transmission route of the gearbox in reverse gear mode when the engine is driven alone, as described in Embodiment 1 of the present invention.

[0037] Figure 7 This is a schematic diagram of the power transmission route of the gearbox in ultra-low speed gear mode when the engine is driven alone, as described in Embodiment 1 of the present invention.

[0038] Figure 8 This is a schematic diagram of the power transmission route of the gearbox in the first gear mode when the engine and motor are driven together, as described in Embodiment 1 of the present invention.

[0039] Figure 9 This is a schematic diagram of the power transmission route of the gearbox in the second gear mode when the engine and motor are driven together, as described in Embodiment 1 of the present invention.

[0040] Figure 10 This is a schematic diagram of the power transmission route of the gearbox in the third gear mode when the engine and motor are driven together, as described in Embodiment 1 of the present invention.

[0041] Figure 11 This is a schematic diagram of the power transmission route of the gearbox in the fourth gear mode when the engine and motor are driven together, as described in Embodiment 1 of the present invention.

[0042] Figure 12 This is a schematic diagram of the power transmission route of the gearbox in reverse gear mode when the engine and motor are driven together, as described in Embodiment 1 of the present invention.

[0043] Figure 13 This is a schematic diagram of the power transmission route of the gearbox in ultra-low speed gear mode when the engine and motor are driven together, as described in Embodiment 1 of the present invention.

[0044] Figure 14 This is a schematic diagram of the power transmission route when the motor is driven alone in the first gear mode according to Embodiment 1 of the present invention.

[0045] Figure 15 This is a schematic diagram of the power transmission route when the motor is driven alone in the second gear mode, as described in Embodiment 1 of the present invention.

[0046] Figure 16This is a schematic diagram of the power transmission route when the motor is driven alone in the third gear mode, as described in Embodiment 1 of the present invention.

[0047] Figure 17 This is a schematic diagram of the power transmission route when the motor is driven alone in the fourth gear mode, as described in Embodiment 1 of the present invention.

[0048] Figure 18 This is a schematic diagram of the power transmission route when the motor is driven alone in reverse gear mode, as described in Embodiment 1 of the present invention.

[0049] Figure 19 This is a schematic diagram of the power transmission route when the motor is driven alone in ultra-low speed mode, as described in Embodiment 1 of the present invention.

[0050] Figure 20 This is a schematic diagram of the output shaft assembly according to Embodiment 1 of the present invention.

[0051] Explanation of reference numerals in the attached figures:

[0052] 1. Electric motor; 101. Seventh drive wheel;

[0053] 2. Input shaft; 201. First drive pulley; 202. Second drive pulley; 203. Third drive pulley; 204. Fourth drive pulley; 205. Third synchronizer; 206. Fourth synchronizer; 207. Fifth drive pulley;

[0054] 3. Output shaft; 301. First driven wheel; 302. Second driven wheel; 303. Third driven wheel; 304. Fourth driven wheel; 305. Fifth driven wheel; 306. Sixth driving wheel; 307. First synchronizer; 308. Second synchronizer;

[0055] 4. Planetary gear mechanism; 401. Sun gear; 402. Planet gears; 403. Planet carrier; 404. Gear ring;

[0056] 5. First intermediate shaft; 501. First intermediate wheel;

[0057] 6. Second intermediate shaft; 601. Second intermediate wheel;

[0058] 7. Power take-off shaft; 701. Sixth driven wheel;

[0059] 8. Clutch; 9. Engine; 10. Differential; 11. Steering system. Detailed Implementation

[0060] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0061] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "back," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0062] Furthermore, in the description of this invention, unless otherwise explicitly defined, the terms "installation," "connection," "linking," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention in light of the specific circumstances.

[0063] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0064] Example 1

[0065] This embodiment relates to a gearbox, such as Figure 1 As shown, the overall structure mainly includes a motor 1, an input shaft 2, a first power assembly, a second power assembly, a third power assembly, a fourth power assembly, a fourth synchronizer for controlling the power supply between the third power assembly and the fourth power assembly, and an output shaft 3.

[0066] Preferably, the motor 1 is connected to the second power assembly, and the input shaft 2 is connected to the output shaft 3 via the first and second power assemblies respectively. This facilitates the transmission of power output from the motor 1 to the input shaft 2 via the second power assembly, and further to the output shaft 3. Alternatively, the motor 1 can be connected to the first power assembly, in which case the power output from the motor 1 is transmitted to the input shaft 2 via the first power assembly, and then to the output shaft 3 via the input shaft 3.

[0067] In addition, the input shaft 2 is selectively connected to the output shaft 3 through the third power assembly. The fourth synchronizer 206 and the fourth power assembly are located on the input shaft 2. The fourth synchronizer 206 is used to control the power supply between the third power assembly and the fourth power assembly.

[0068] In this embodiment, the gearbox, by arranging a first power assembly and a second power assembly, facilitates the transmission of power from the input shaft 2 to the output shaft 3. Furthermore, by providing a third power assembly on the input shaft 2, the power on the input shaft 2 can be transmitted to the output shaft 3 via the third power assembly, thereby enabling the vehicle's reverse gear function. The arrangement of the fourth synchronizer 206 and the fourth power assembly allows the power transmitted to the input shaft 2 to be transmitted to the output shaft 3 via the fourth power assembly, enabling the gearbox to shift to an ultra-low gear.

[0069] In a preferred embodiment, the first power assembly includes a first driving wheel 201 and a second driving wheel 202 mounted on the input shaft 2, a first driven wheel 301, a second driven wheel 302, and a first synchronizer 307 mounted on the output shaft 3. The first driving wheel 201 and the first driven wheel 301 are drive-connected, and the second driving wheel 202 and the second driven wheel 302 are drive-connected. The first synchronizer 307 is used to selectively connect either the first driven wheel 301 or the second driven wheel 302.

[0070] like Figure 1 As shown, preferably, the first driving wheel 201 and the second driving wheel 202 are fixedly connected to the input shaft 2, while the first driven wheel 301 and the second driven wheel 302 are loosely fitted on the output shaft 3, and the first driving wheel 201 is meshed with the first driven wheel 301, and the second driving wheel 202 is meshed with the second driven wheel 302.

[0071] When the first synchronizer 307 is connected to the first driven wheel 301, the power on the input shaft 2 is transmitted to the output shaft 3 via the first driving wheel 201 and the first driven wheel 301. When the first synchronizer 307 is connected to the second driven wheel 302, the power on the input shaft 2 is transmitted to the output shaft 3 via the second driving wheel 202 and the second driven wheel 302. By setting up the first power assembly, it is convenient to transmit the power from the input shaft 2 to the output shaft 3, and it is also convenient to change gears and adjust vehicle speed. Moreover, the power transmission structure of the first power assembly is simple and easy to arrange.

[0072] To facilitate control over whether the third power assembly is connected to the output shaft 3 and to simplify its arrangement, the third power assembly includes a fifth drive wheel 207 loosely fitted on the input shaft 2, a third synchronizer 205 mounted on the input shaft 2, a first intermediate shaft 5, a first intermediate wheel 501 mounted on the first intermediate shaft 5, and a fifth driven wheel 305 mounted on the output shaft 3. The third synchronizer 205 is used to selectively connect to the fifth drive wheel 207, and the first intermediate wheel 501 is meshed with both the fifth drive wheel 207 and the fifth driven wheel 305. When the third synchronizer 205 is engaged with the fifth drive wheel 207, power on the input shaft 2 can be transmitted to the output shaft 3 via the fifth drive wheel 207, the first intermediate wheel 501, and the fifth driven wheel 305.

[0073] In a preferred embodiment, the fourth power component in this example includes a planetary gear mechanism 4, with the sun gear 401 of the planetary gear mechanism 4 mounted on the input shaft 2. A fourth synchronizer 206 is mounted on the fifth drive gear 207, and the fourth synchronizer 206 is selectively connected to the ring gear 404 or the planet carrier 403 of the planetary gear mechanism 4.

[0074] It should be noted that the fourth synchronizer 206 is preferably a bidirectional single-sided synchronizer located on the fifth drive wheel 207. When setting it up, the engagement teeth that can engage with the fourth synchronizer 206 can be connected to the gear ring 404 or the planetary carrier 403.

[0075] Preferably, the planetary gear mechanism 4 mainly includes a sun gear 401, a ring gear 404, and planet gears 402 that are respectively connected to the sun gear 401 and the ring gear 404 for transmission. The sun gear 401 is fixed to the input shaft 2, the planet gears 402 are rotatably mounted on the planet carrier 403, the planet carrier 403 is fixed to the housing of the gearbox, the ring gear 404 is sleeved on each planet gear 402, and the fourth synchronizer 206 selectively connects to the ring gear 404. The engagement teeth that can engage with the fourth synchronizer 206 are connected to the ring gear 404, so that the fourth synchronizer 206 can control the power supply between the third power component and the planetary gear mechanism 4.

[0076] It should be noted that if the ring gear 404 of the planetary gear mechanism 4 is fixed on the housing of the gearbox, the fourth synchronizer 206 selectively connects to the planet carrier 403, and the engaging teeth that can engage with the fourth synchronizer 206 are connected to the planet carrier 403.

[0077] The fifth drive wheel 207 of this invention is connected to the gear ring 404 of the planetary gear mechanism 4 via the fourth synchronizer 206, making the structure of this invention compact, saving power transmission path, and also enabling the reverse gear and ultra-low speed gear of this invention to be effectively combined. Furthermore, by placing the planetary gear mechanism 4 at the right end of the input shaft 2, as... Figure 1As shown, this invention also makes the power transmission path shorter at ultra-low speeds compared to conventional gearboxes.

[0078] In this embodiment, the fourth synchronizer 206 can be either a bidirectional single-sided synchronizer or a bidirectional double-sided synchronizer. When it is a bidirectional double-sided synchronizer, the gear hub is loosely fitted on the input shaft 2. By moving the gear sleeve with the shift fork, the synchronizer ring can be driven to engage with the engagement teeth on the fifth drive wheel 207 and the gear ring 404 or planet carrier 403 located on both sides, thereby realizing the power switching between the fifth drive wheel 207 and the planetary gear mechanism.

[0079] It should be noted that this embodiment also provides an output shaft assembly, such as... Figure 20 As shown, it includes a power output shaft 7 and a steering device 11; the power output shaft 7 is mounted on the steering device 11; the steering device 11 is mounted on the sixth driven wheel 701 and is used to adjust the angle between the power output shaft 7 and the sixth driven wheel 701.

[0080] As described above, in the output shaft assembly, the sixth driven wheel 701 is connected to the power output shaft 7 via a steering device 11. This allows the connection angle between the power output shaft 7 and the sixth driven wheel 701 to be adjusted via the steering device 11. Specifically, it adjusts the angle between the axis of the power output shaft 7 and the axis of the sixth driven wheel 701, thus achieving angle adjustment of the power output shaft 7 relative to the sixth driven wheel 701. Therefore, the angle adjustment of the power output shaft 7 relative to the sixth driven wheel 701 enables adjustment of the direction of the power output shaft 7, reducing the limitations on the arrangement of the power output shaft 7 and its connected components (such as the main reducer), and also reducing the limitations on the arrangement of the connected components, facilitating vehicle layout. Furthermore, it facilitates assembly during powertrain assembly.

[0081] To enable the transmission to have more gears and facilitate adjustment of each gear, such as Figure 1 As shown, the second power assembly includes a third driving wheel 203 and a fourth driving wheel 204 mounted on the input shaft 2, a third driven wheel 303 and a fourth driven wheel 304 mounted on the output shaft 3, and a second synchronizer 308. The third driving wheel 203 and the third driven wheel 303 are drive-connected, and the fourth driving wheel 204 and the fourth driven wheel 304 are drive-connected. The second synchronizer 308 is used to selectively connect either the third driven wheel 303 or the fourth driven wheel 304.

[0082] Preferably, the third drive wheel 203 and the fourth drive wheel 204 are both fixedly connected to the input shaft 2, while the third driven wheel 303 and the fourth driven wheel 304 are rotatably sleeved on the output shaft 3. In order to facilitate the arrangement and make the internal structure of the gearbox more compact, the third drive wheel 203 is meshed with the third driven wheel 303, and the fourth drive wheel 204 is meshed with the fourth driven wheel 304.

[0083] With this configuration, when the second synchronizer 308 is engaged with the third driven wheel 303, the power on the input shaft 2 can be transmitted to the output shaft 3 via the third driving wheel 203 and the third driven wheel 303. When the second synchronizer 308 is engaged with the fourth driven wheel 304, the power on the input shaft 2 can be transmitted to the output shaft 3 via the fourth driving wheel 204 and the fourth driven wheel 304.

[0084] Furthermore, to facilitate the transmission connection between the motor 1 and the second power assembly, the gearbox also includes a second intermediate shaft 6 and a second intermediate pulley 601 disposed on the second intermediate shaft 6, and a seventh drive pulley 101 is disposed on the power output shaft of the motor 1. The second intermediate pulley 601 is drive-connected to the seventh drive pulley 101, and the second intermediate pulley 601 is also drive-connected to the third drive pulley 203 or the fourth drive pulley 204.

[0085] In this embodiment, for ease of arrangement, the second intermediate wheel 601 is preferably meshed with the fourth driving wheel 204, so that the power output by the motor 1 can be transmitted to the input shaft 2 via the seventh driving wheel 101, the second intermediate wheel 601 and the fourth driving wheel 204.

[0086] By incorporating a seventh drive wheel 101 and connecting it to the fourth drive wheel 204, the arrangement of the motor 2 is facilitated, and the smoothness of the transmission is improved. Furthermore, connecting the seventh drive wheel 101 to the fourth drive wheel 204, with the fourth drive wheel 204 preferably positioned between the third drive wheel 203 and the third synchronizer 205, also contributes to a more compact gearbox structure.

[0087] In addition, the gearbox also includes a power output shaft 7, on which a sixth driven wheel 701 is provided, and a sixth driving wheel 306 is provided on the output shaft 3, with the sixth driving wheel 306 and the sixth driven wheel 701 being connected in a driving manner. In a specific implementation, the power output shaft 7 can be directly used as the power input shaft 2 of the differential 10, used to input power to the differential 10, and for ease of arrangement, the sixth driving wheel 306 is meshed with the sixth driven wheel 701. It should be noted that in this embodiment, the sixth driven wheel 701 and the sixth driving wheel 306 may not be provided. In this case, the power output shaft 7 and the output shaft 3 share a single shaft, which is also possible. That is, in this case, the output shaft 3 is used to output power outward, but this would occupy more space in the gearbox axial direction.

[0088] The gearbox in this embodiment optimizes its internal power transmission structure, enabling it to achieve multiple different gear modes, shortening the overall length of the gearbox, and reducing the number of gear sets through which power is transmitted, thereby improving the transmission efficiency of the gearbox.

[0089] This embodiment also relates to a vehicle drive device, which includes the aforementioned gearbox, an engine 9, and a control mechanism. The control mechanism is located between the power output end of the engine 9 and the input shaft 2. The control mechanism controls the power supply between the input shaft 2 and the power output end of the engine 9, with the power from the engine 9 transmitted to the output shaft 3 via the input shaft 2.

[0090] In a preferred embodiment, the control mechanism includes a clutch 8 located between the power output end of the engine 9 and the input shaft 2. The clutch 8 is used to control the connection or disconnection between the power output end of the engine 9 and the input shaft 2, and it can adopt an existing structure, thereby reducing the cost of the gearbox.

[0091] The vehicle drive system of this embodiment has three drive modes, including engine 9 drive mode alone, engine 9 and motor 1 drive mode together, and motor 1 drive mode alone. Each drive mode has multiple different gear modes, which can be referred to below for details.

[0092] The gear modes in engine 9's independent drive mode are as follows:

[0093] 1) When the engine is in drive mode 9, the power transmission route of the transmission in first gear mode is as follows: Figure 2 As shown, when clutch 8 is engaged, first synchronizer 307 is engaged with first driven wheel 301, and this gear mode can be used as the first gear of the transmission.

[0094] At this time, the power transmission route is: engine 9 → clutch 8 → input shaft 2 → first driving wheel 201 → first driven wheel 301 → first synchronizer 307 → output shaft 3 → sixth driving wheel 306 → sixth driven wheel 701 → power output shaft 7 → differential 10.

[0095] 2) When the engine is in drive mode 9, the power transmission route of the transmission in second gear mode can be as follows: Figure 3 As shown, clutch 8 is engaged, and second synchronizer 308 is engaged with third driven wheel 303. This gear mode can be used as the second gear of the gearbox.

[0096] At this time, the power transmission route is: engine 9 → clutch 8 → input shaft 2 → third drive wheel 203 → third driven wheel 303 → second synchronizer 308 → output shaft 3 → sixth drive wheel 306 → sixth driven wheel 701 → power output shaft 7 → differential 10.

[0097] 3) When the engine is in drive mode 9, the power transmission route of the transmission in the third gear mode can be as follows: Figure 4 As shown, when clutch 8 is engaged, the first synchronizer 307 engages with the second driven wheel 302, and this gear mode can be used as the third gear of the transmission.

[0098] At this time, the power transmission route is: engine 9 → clutch 8 → input shaft 2 → second driving wheel 202 → second driven wheel 302 → first synchronizer 307 → output shaft 3 → sixth driving wheel 306 → sixth driven wheel 701 → power output shaft 7 → differential 10.

[0099] 4) When the engine is in drive mode 9, the power transmission route of the transmission in fourth gear mode can be as follows: Figure 5 As shown, clutch 8 is engaged, and second synchronizer 308 is engaged with fourth driven wheel 304. This gear mode can be used as the fourth gear of the transmission.

[0100] At this time, the power transmission route is: engine 9 → clutch 8 → input shaft 2 → fourth drive wheel 204 → fourth driven wheel 304 → second synchronizer 308 → output shaft 3 → sixth drive wheel 306 → sixth driven wheel 701 → power output shaft 7 → differential 10.

[0101] 5) When the engine is in drive mode, the power transmission route of the transmission in reverse mode can be as follows: Figure 6 As shown, clutch 8 engages, and third synchronizer 205 engages with fifth drive wheel 207, thereby realizing reverse gear mode.

[0102] At this time, the power transmission route is: engine 9 → clutch 8 → input shaft 2 → third synchronizer 205 → fifth drive wheel 207 → first intermediate wheel 501 → fifth driven wheel 305 → output shaft 3 → sixth drive wheel 306 → sixth driven wheel 701 → power output shaft 7 → differential 10.

[0103] 6) When the engine is in drive mode 9, the power transmission route of the transmission in ultra-low gear mode can be as follows: Figure 7 As shown, clutch 8 engages, and fourth synchronizer 206 engages with gear ring 404, thereby realizing ultra-low speed mode.

[0104] At this time, the power transmission route is: engine 9 → clutch 8 → input shaft 2 → sun gear 401 → planet gear 402 → ring gear 404 → fourth synchronizer 206 → fifth drive gear 207 → first intermediate gear 501 → fifth driven gear 305 → output shaft 3 → sixth drive gear 306 → sixth driven gear 701 → power output shaft 7 → differential 10.

[0105] The gear modes in the combined drive mode of engine 9 and electric motor 1 are as follows:

[0106] 1) When engine 9 and motor 1 drive together, the power transmission route of the gearbox in first gear mode can be as follows: Figure 8 As shown, clutch 8 is engaged, and first synchronizer 307 is engaged with first driven wheel 301.

[0107] At this time, the power transmission route of engine 9 is: engine 9 → clutch 8 → input shaft 2 → first driving wheel 201 → first driven wheel 301 → first synchronizer 307 → output shaft 3 → sixth driving wheel 306 → sixth driven wheel 701 → power output shaft 7 → differential 10.

[0108] The power transmission route of motor 1 is as follows: motor 1 → seventh drive wheel 101 → second intermediate wheel 601 → fourth drive wheel 204 → input shaft 2 → first drive wheel 201 → first driven wheel 301 → first synchronizer 307 → output shaft 3 → sixth drive wheel 306 → sixth driven wheel 701 → power output shaft 7 → differential 10.

[0109] 2) When engine 9 and motor 1 drive together, the power transmission route of the gearbox in second gear mode can be as follows: Figure 9 As shown, when clutch 8 is engaged, the second synchronizer 308 is engaged with the third driven wheel 303, and the torque of engine 9 is directly output to input shaft 2 under the engagement of clutch 8; at the same time.

[0110] At this time, the power transmission route of engine 9 is: engine 9 → clutch 8 → input shaft 2 → third drive wheel 203 → third driven wheel 303 → second synchronizer 308 → output shaft 3 → sixth drive wheel 306 → sixth driven wheel 701 → power output shaft 7 → differential 10.

[0111] The power transmission route of motor 1 is as follows: motor 1 → seventh driving wheel 101 → second intermediate wheel 601 → fourth driving wheel 204 → input shaft 2 → third driving wheel 203 → third driven wheel 303 → second synchronizer 308 → output shaft 3 → sixth driving wheel 306 → sixth driven wheel 701 → power output shaft 7 → differential 10.

[0112] 3) When engine 9 and motor 1 drive together, the power transmission route of the gearbox in third gear mode can be as follows: Figure 10 As shown, clutch 8 is engaged, and first synchronizer 307 is engaged with second driven wheel 302.

[0113] At this time, the power transmission route of engine 9 is: engine 9 → clutch 8 → input shaft 2 → second driving wheel 202 → second driven wheel 302 → first synchronizer 307 → output shaft 3 → sixth driving wheel 306 → sixth driven wheel 701 → power output shaft 7 → differential 10.

[0114] The power transmission route of motor 1 is as follows: motor 1 → seventh driving wheel 101 → second intermediate wheel 601 → fourth driving wheel 204 → input shaft 2 → second driving wheel 202 → second driven wheel 302 → first synchronizer 307 → output shaft 3 → sixth driving wheel 306 → sixth driven wheel 701 → power output shaft 7 → differential 10.

[0115] 4) When engine 9 and motor 1 drive together, the power transmission route of the gearbox in fourth gear mode can be as follows: Figure 11 As shown, clutch 8 is engaged, and second synchronizer 308 is engaged with fourth driven wheel 304.

[0116] At this time, the power transmission route of engine 9 is: engine 9 → clutch 8 → input shaft 2 → fourth drive wheel 204 → fourth driven wheel 304 → second synchronizer 308 → output shaft 3 → sixth drive wheel 306 → sixth driven wheel 701 → power output shaft 7 → differential 10.

[0117] The power transmission route of motor 1 is as follows: motor 1 → seventh driving wheel 101 → second intermediate wheel 601 → fourth driving wheel 204 → input shaft 2 → fourth driven wheel 304 → second synchronizer 308 → output shaft 3 → sixth driving wheel 306 → sixth driven wheel 701 → power output shaft 7 → differential 10.

[0118] 5) When engine 9 and motor 1 drive together, the power transmission route of the gearbox in reverse mode can be as follows: Figure 12 As shown, clutch 8 is engaged, and third synchronizer 205 is engaged with fifth drive wheel 207.

[0119] At this time, the power transmission route of engine 9 is as follows: engine 9 → clutch 8 → input shaft 2 → third synchronizer 205 → fifth drive wheel 207 → first intermediate wheel 501 → fifth driven wheel 305 → output shaft 3 → sixth drive wheel 306 → sixth driven wheel 701 → power output shaft 7 → differential 10.

[0120] The power transmission route of motor 1 is as follows: motor 1 → seventh drive wheel 101 → second intermediate wheel 601 → fourth drive wheel 204 → input shaft 2 → third synchronizer 205 → fifth drive wheel 207 → first intermediate wheel 501 → fifth driven wheel 305 → output shaft 3 → sixth drive wheel 306 → sixth driven wheel 701 → power output shaft 7 → differential 10.

[0121] 6) When engine 9 and motor 1 drive together, the power transmission route of the gearbox in ultra-low speed mode can be as follows: Figure 13 As shown, clutch 8 is engaged, and fourth synchronizer 206 is engaged with gear ring 404.

[0122] At this time, the power transmission route of engine 9 is as follows: engine 9 → clutch 8 → input shaft 2 → sun gear 401 → planet gear 402 → ring gear 404 → fourth synchronizer 206 → fifth drive gear 207 → first intermediate gear 501 → fifth driven gear 305 → output shaft 3 → sixth drive gear 306 → sixth driven gear 701 → power output shaft 7 → differential 10.

[0123] The power transmission route of motor 1 is as follows: motor 1 → seventh driving gear 101 → second intermediate gear 601 → fourth driving gear 204 → input shaft 2 → sun gear 401 → planetary gear 402 → ring gear 404 → fourth synchronizer 206 → fifth driving gear 207 → first intermediate gear 501 → fifth driven gear 305 → output shaft 3 → sixth driving gear 306 → sixth driven gear 701 → power output shaft 7 → differential 10.

[0124] The gear modes in motor 1's standalone drive mode are as follows:

[0125] 1) When motor 1 is driven alone, the power transmission route of the gearbox in the first gear mode can be as follows: Figure 14 As shown, clutch 8 is disengaged, and the first synchronizer 307 is engaged with the first driven pulley 301. At this time, the power transmission route of motor 1 is as follows: motor 1 → seventh drive pulley 101 → second intermediate pulley 601 → fourth drive pulley 204 → input shaft 2 → first drive pulley 201 → first driven pulley 301 → first synchronizer 307 → output shaft 3 → sixth drive pulley 306 → sixth driven pulley 701 → power output shaft 7 → differential 10.

[0126] 2) When motor 1 is driven alone, the power transmission route of the gearbox in the second gear mode can be as follows: Figure 15 As shown, clutch 8 is disengaged, and the second synchronizer 308 is engaged with the third driven pulley 303. At this time, the power transmission route of motor 1 is as follows: motor 1 → seventh driving pulley 101 → second intermediate pulley 601 → fourth driving pulley 204 → input shaft 2 → third driving pulley 203 → third driven pulley 303 → second synchronizer 308 → output shaft 3 → sixth driving pulley 306 → sixth driven pulley 701 → power output shaft 7 → differential 10.

[0127] 3) When motor 1 is driven alone, the power transmission route of the gearbox in the third gear mode can be as follows: Figure 16 As shown, clutch 8 is disengaged, and the first synchronizer 307 is engaged with the second driven pulley 302. At this time, the power transmission route of motor 1 is as follows: motor 1 → seventh driving pulley 101 → second intermediate pulley 601 → fourth driving pulley 204 → input shaft 2 → second driving pulley 202 → second driven pulley 302 → first synchronizer 307 → output shaft 3 → sixth driving pulley 306 → sixth driven pulley 701 → power output shaft 7 → differential 10.

[0128] 4) When motor 1 is driven alone, the power transmission route of the gearbox in fourth gear mode can be as follows: Figure 17As shown, clutch 8 is disengaged, and the second synchronizer 308 is engaged with the fourth driven pulley 304. The power transmission route of motor 1 is as follows: motor 1 → seventh driving pulley 101 → second intermediate pulley 601 → fourth driving pulley 204 → input shaft 2 → fourth driven pulley 304 → second synchronizer 308 → output shaft 3 → sixth driving pulley 306 → sixth driven pulley 701 → power output shaft 7 → differential 10.

[0129] 5) When motor 1 is driven alone, the power transmission route of the gearbox in reverse mode can be as follows: Figure 18 As shown, clutch 8 is disengaged, and the third synchronizer 205 is engaged with the fifth drive wheel 207. The power transmission route of motor 1 is as follows: motor 1 → seventh drive wheel 101 → second intermediate wheel 601 → fourth drive wheel 204 → input shaft 2 → third synchronizer 205 → fifth drive wheel 207 → first intermediate wheel 501 → fifth driven wheel 305 → output shaft 3 → sixth drive wheel 306 → sixth driven wheel 701 → power output shaft 7 → differential 10.

[0130] 6) When motor 1 is driven alone, the power transmission route of the gearbox in ultra-low speed mode can be as follows: Figure 19 As shown, clutch 8 is disengaged, and the fourth synchronizer 206 engages with the gear ring 404. The power transmission route of motor 1 is as follows: motor 1 → seventh drive gear 101 → second intermediate gear 601 → fourth drive gear 204 → input shaft 2 → sun gear 401 → planetary gear 402 → gear ring 404 → fourth synchronizer 206 → fifth drive gear 207 → first intermediate gear 501 → fifth driven gear 305 → output shaft 3 → sixth drive gear 306 → sixth driven gear 701 → power output shaft 7 → differential 10.

[0131] Still refer to Figure 1 As shown, when the vehicle is parked with low remaining battery power, motor 1 generates electricity to charge the battery, and clutch 8 is in the disengaged state at this time.

[0132] The vehicle drive device of this embodiment, by placing the control mechanism between the engine 9 and the input shaft 2, can control the transmission of power from the engine 9 to the input shaft 2. Thus, it can realize multiple drive modes such as engine 9 driving alone, motor 1 driving alone, and engine 9 and motor 1 driving together, thereby facilitating the realization of multiple different gear modes.

[0133] Example 2

[0134] This embodiment relates to a vehicle equipped with a vehicle drive device according to one embodiment.

[0135] The vehicle in this embodiment, by equipping the aforementioned vehicle drive device, can realize multiple drive modes such as engine 9 driving alone, motor 1 driving alone, and engine 9 and motor 1 driving together. It is also beneficial to the overall structural layout, and can realize multiple different gear modes while occupying a small space.

[0136] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A gearbox, characterized in that: It includes a motor (1), an input shaft (2), a first power assembly, a second power assembly, a third power assembly, a fourth power assembly, a fourth synchronizer (206) for controlling the power supply between the third power assembly and the fourth power assembly, and an output shaft (3). The fourth synchronizer (206) and the fourth power assembly are mounted on the input shaft (2); The input shaft (2) is connected to the output shaft (3) via the first power assembly and the second power assembly respectively; The input shaft (2) is selectively connected to the output shaft (3) via the third power assembly. The motor (1) is connected to the first power component or the second power component in a transmission connection; The third power assembly includes a fifth drive wheel (207) loosely fitted on the input shaft (2), and a third synchronizer (205) provided on the input shaft (2), and also includes a first intermediate shaft (5), a first intermediate wheel (501) provided on the first intermediate shaft (5), and a fifth driven wheel (305) provided on the output shaft (3). The third synchronizer (205) is used to selectively connect to the fifth drive wheel (207). The first intermediate wheel (501) is connected to the fifth driving wheel (207) and the fifth driven wheel (305) respectively in a transmission connection; The fourth power component includes a planetary gear mechanism (4); The sun gear (401) of the planetary gear mechanism (4) is mounted on the input shaft (2); The fourth synchronizer (206) selectively connects to the ring gear (404) / planet carrier (403) of the planetary gear mechanism (4).

2. The gearbox according to claim 1, characterized in that: The first power assembly includes a first drive wheel (201) and a second drive wheel (202) disposed on the input shaft (2), a first driven wheel (301), a second driven wheel (302) and a first synchronizer (307) disposed on the output shaft (3). The first driving wheel (201) and the first driven wheel (301) are connected by a drive, and the second driving wheel (202) and the second driven wheel (302) are connected by a drive. The first synchronizer (307) is used to selectively connect the first driven wheel (301) or the second driven wheel (302).

3. The gearbox according to claim 1, characterized in that: The second power assembly includes a third drive wheel (203) and a fourth drive wheel (204) disposed on the input shaft (2), a third driven wheel (303), a fourth driven wheel (304) disposed on the output shaft (3), and a second synchronizer (308). The third driving wheel (203) and the third driven wheel (303) are connected by a drive, and the fourth driving wheel (204) and the fourth driven wheel (304) are connected by a drive. The second synchronizer (308) is used to selectively connect the third driven wheel (303) or the fourth driven wheel (304).

4. The gearbox according to claim 3, characterized in that: It also includes a second intermediate shaft (6) and a second intermediate wheel (601) disposed on the second intermediate shaft (6); The motor (1) has a seventh drive wheel (101) on its power output shaft. The second intermediate wheel (601) is connected to the seventh driving wheel (101) in a driving connection, and the second intermediate wheel (601) is connected to the third driving wheel (203) or the fourth driving wheel (204) in a driving connection.

5. The gearbox according to any one of claims 1-4, characterized in that: It also includes a power output shaft (7); The power output shaft (7) is provided with a sixth driven wheel (701). The output shaft (3) is provided with a sixth drive wheel (306); The sixth driving wheel (306) and the sixth driven wheel (701) are connected by a transmission.

6. A vehicle drive system, characterized in that: The transmission comprising any one of claims 1-5 further comprises an engine (9) and a control mechanism; The control mechanism is located between the power output end of the engine (9) and the input shaft (2), and the control mechanism is used to control the power supply between the input shaft (2) and the power output end of the engine (9).

7. The vehicle drive device according to claim 6, characterized in that: The control mechanism includes a clutch (8) located between the power output end of the engine (9) and the input shaft (2).

8. A vehicle, characterized in that: The vehicle is equipped with a vehicle drive device as described in any one of claims 6-7.

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