Electric ship outboard motor assembly and electric ship

Abstract

The invention discloses an electric ship outer machine assembly and an electric ship. The electric ship outer machine assembly comprises a motor driving assembly, a propelling assembly and a speed reducer assembly. The speed reducer assembly comprises a speed reducer shell, a first-stage planetary gear speed reducing mechanism and a second-stage bevel gear speed reducing mechanism, the power input end of the first-stage planetary gear speed reducing mechanism is in transmission connection with the output end of the motor driving assembly, and the second-stage bevel gear speed reducing mechanism comprises a driving bevel gear and a driven bevel gear meshed with the driving bevel gear. The power input end of the driving bevel gear is in transmission connection with the power output end of the first-stage planetary gear speed reducing mechanism, the driven bevel gear is in transmission connection with the propelling assembly, the axis of the driving bevel gear is perpendicular to that of the driven bevel gear, and the driving bevel gear is supported in the speed reducer shell through a bearing assembly. Power transmission of the motor driving assembly is achieved through the first-stage planetary gear speed reduction mechanism and the second-stage bevel gear speed reduction mechanism, the power structure is simpler, and the design of the electric outboard motor assembly is more compact and lighter.

Description

Technical Field

[0001] This application relates to the field of marine power equipment technology, and more specifically, to an electric boat outboard motor assembly and an electric boat. Background Technology

[0002] Outboard motors are detachable power units mounted on the stern deck of boats. Traditional outboard motors typically use internal combustion engines for power, but these are usually bulky, noisy, and have a complex structure. They are generally speed-controlled via throttle and have a minimum idle speed limit.

[0003] Therefore, how to simplify the structure and assembly of outboard motors and improve the compactness of outboard motor structures has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide an electric outboard motor assembly to simplify the structure and assembly of the outboard motor and improve the compactness of the outboard motor structure.

[0005] Another object of this application is to provide an electric boat having the above-mentioned electric boat outboard motor assembly.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] An electric outboard motor assembly, comprising:

[0008] Motor drive assembly;

[0009] Propulsion assembly;

[0010] The reducer assembly includes a reducer housing, a primary planetary gear reducer mechanism, and a secondary bevel gear reducer mechanism. The power input end of the primary planetary gear reducer mechanism is connected to the output end of the motor drive assembly. The secondary bevel gear reducer mechanism includes a driving bevel gear and a driven bevel gear meshing with the driving bevel gear. The power input end of the driving bevel gear is connected to the power output end of the primary planetary gear reducer mechanism. The driven bevel gear is connected to the propulsion assembly. The axes of the driving bevel gear and the driven bevel gear are perpendicular to each other, and the driving bevel gear is supported in the reducer housing by a bearing assembly.

[0011] Optionally, in the above-mentioned electric outboard motor assembly, the primary planetary gear reduction mechanism includes:

[0012] The sun gear is connected to the output end of the motor drive assembly.

[0013] An internal gear ring, which is connected inside the reducer housing;

[0014] A planetary gear assembly, comprising a planetary gear shaft and planetary gears sleeved on the outside of the planetary gear shaft, wherein the planetary gears mesh with the sun gear and the internal gear ring respectively;

[0015] A planetary carrier is connected to the planetary gear shaft, and the planetary output shaft of the planetary carrier is drive-connected to the drive input shaft of the drive bevel gear.

[0016] Optionally, in the above-mentioned electric outboard motor assembly, a planetary bearing is provided between the planetary gear and the planetary gear shaft, and an oil collection tray is provided on the planetary carrier, the oil collection tray being used to store lubricating oil that can lubricate the planetary bearing.

[0017] Optionally, in the above-mentioned electric outboard motor assembly, the planetary gear shaft is provided with an oil supply hole, the oil collection pan is able to supply the lubricating oil to the oil supply hole, and an oil inlet channel is provided between the oil supply hole of the planetary gear shaft and the planetary bearing, so that the lubricating oil is thrown towards the planetary bearing under the action of centrifugal force generated when the planetary carrier rotates.

[0018] Optionally, in the above-mentioned electric outboard motor assembly, the bearing assembly includes a double-row tapered bearing, which is sleeved on the drive input shaft of the drive bevel gear. One end of the double-row tapered bearing is provided with a drive gear adjusting shim, and the other end of the double-row tapered bearing is provided with a drive gear limiting retaining ring. The planetary output shaft of the planetary carrier passes through the drive input shaft of the drive bevel gear and is connected to the drive input shaft for transmission. The planetary output shaft of the planetary carrier is connected to the drive input shaft of the drive bevel gear by a locking bolt, so that the locking bolt can provide axial preload to the double-row tapered bearing.

[0019] Optionally, in the above-mentioned electric outboard motor assembly, the drive input shaft of the drive bevel gear passes through the planetary output shaft of the planetary carrier and is drively connected to the planetary output shaft. The bearing assembly includes a first tapered bearing, a second tapered bearing, and an elastic spacer. The elastic spacer is supported on the inner rings of the first and second tapered bearings. The first tapered bearing is sleeved on the planetary output shaft, and the second tapered bearing is sleeved on the drive input shaft. The drive input shaft is provided with an external thread for threaded engagement with a lock nut. The drive input shaft and the planetary output shaft are connected through the lock nut so that the lock nut can provide axial preload to the first and second tapered bearings. A drive gear adjusting shim is provided at the end of the second tapered bearing near the first tapered bearing.

[0020] Optionally, in the above-mentioned electric outboard motor assembly, the secondary bevel gear reduction mechanism further includes a driven gear shaft, which is connected to the driven bevel gear and supported in the reducer housing by a shaft bearing. A driven gear adjusting shim is provided between the shaft bearing and the reducer housing, and the driven gear shaft is connected to the propulsion assembly in a transmission connection.

[0021] Optionally, in the above-mentioned electric outboard motor assembly, the propulsion assembly includes a propeller, the rotating shaft of the propeller is connected to the driven gear shaft, and a seal is provided between the rotating shaft and the reducer housing.

[0022] Optionally, in the above-mentioned electric outboard motor assembly, the motor drive assembly includes a drive motor, and the drive motor includes a motor housing, a motor shaft, a motor stator, a motor rotor, a rotary transformer, and a motor end cover;

[0023] The motor shaft, the motor stator, and the motor rotor are all housed within the motor housing, and the motor rotor is fitted onto the motor shaft. The motor shaft is connected to the power input end of the first-stage planetary gear reduction mechanism. One end of the motor housing is connected to the reducer housing via fasteners, and the other end of the motor housing is connected to the motor end cover.

[0024] The winding leads of the motor stator are gathered through a busbar to form multiple connectors for connecting to the three-phase lines. The stator of the rotary transformer is fixed to the motor end cover, and the rotor of the rotary transformer is mounted on the motor shaft and rotates synchronously with the motor shaft.

[0025] An electric boat, comprising an electric boat outboard motor assembly as described in any of the preceding claims.

[0026] The electric outboard motor assembly provided in this application transmits power from the motor drive assembly to the propulsion assembly by connecting the power input end of the primary planetary gear reduction mechanism of the reducer assembly to the output end of the motor drive assembly, and by connecting the power input end of the driving bevel gear of the secondary bevel gear reduction mechanism to the power output end of the primary planetary gear reduction mechanism. Simultaneously, the driven bevel gear of the secondary bevel gear reduction mechanism is connected to the propulsion assembly. The axes of the driving and driven bevel gears are perpendicular to each other, thus converting the output power of the motor drive assembly from the vertical direction to the input power of the propulsion assembly in the horizontal direction. The driving bevel gear is supported within the reducer housing by a bearing assembly. As can be seen from the above example, the electric outboard motor assembly provided in this application transmits power from the motor drive assembly to the propulsion assembly through the primary planetary gear reduction mechanism and the secondary bevel gear reduction mechanism. This simplifies the power structure, significantly reduces the number of parts, and reduces the size of the electric outboard motor assembly, making its design more compact and lightweight. Meanwhile, the electric outboard motor assembly is easier to maintain, produces less noise, and can be speed-adjusted via a switch, eliminating the minimum idle speed limitation. It is also easy to start and stop, has low electricity costs, and can reduce operating costs. Furthermore, the motor drive assembly adopts an independent modular design, facilitating the replacement of motors with different power and torque, and making maintenance more convenient. In addition, the use of a single-stage planetary gear reduction mechanism allows for greater torque transmission, and the combination of the single-stage planetary gear reduction mechanism and the two-stage bevel gear reduction mechanism achieves a large reduction ratio. This allows for increasing the speed of the motor drive assembly while reducing its torque, thereby lowering costs.

[0027] The technical features mentioned above, those to be mentioned below, and those shown individually in the accompanying drawings can be combined arbitrarily, provided that the combined technical features are not contradictory. All feasible combinations of features are the technical content explicitly described herein. Any one of the multiple sub-features contained in the same statement can be applied independently, without necessarily being applied together with other sub-features. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of the electric outboard motor assembly provided in the embodiments of this application;

[0030] Figure 2 This is a schematic diagram of the assembly of the drive bevel gear and the reducer housing provided in an embodiment of this application.

[0031] Among them, 100 is the electric outboard motor assembly, 10 is the motor drive assembly, 11 is the drive motor, 111 is the motor housing, 1111 is the motor inner housing, 1112 is the motor outer housing, 112 is the motor shaft, 113 is the motor stator, 114 is the motor rotor, 115 is the rotary transformer, 116 is the motor end cover, 117 is the busbar, 118 is the motor front bearing, 119 is the motor rear bearing, 1120 is the motor oil seal, 1121 is the O-ring, 20 is the propulsion assembly, 21 is the propeller, 211 is the rotating shaft, 22 is the seal, 23 is the shaft retaining ring, 30 is the reducer assembly, 31 is the reducer housing, 32 is the first-stage planetary gear reduction mechanism, 321 is the sun gear, 322 is the internal gear ring, and 323 is... Planetary gear assembly: 3231 is planetary gear shaft, 3232 is planetary gear, 3233 is planetary bearing, 324 is planetary carrier, 3241 is planetary output shaft, 3242 is oil collection pan, 325 is retaining ring for bore, 33 is two-stage bevel gear reduction mechanism, 331 is driving bevel gear, 3311 is driving input shaft, 332 is driven bevel gear, 333 is driven gear shaft, 334 is shaft bearing, 335 is driven gear adjusting shim, 34 is bearing assembly, 341 is double-row tapered bearing, 342 is driving gear adjusting shim, 343 is driving gear limit retaining ring, 344 is first tapered bearing, 345 is second tapered bearing, 346 is elastic spacer, 35 is locking bolt, 36 is locking nut, and 37 is cover plate. Detailed Implementation

[0032] The core of this application is to provide an electric outboard motor assembly to simplify the structure and assembly of the outboard motor and improve the compactness of the outboard motor structure.

[0033] Another core aspect of this application is to provide an electric boat having the aforementioned electric boat outboard motor assembly.

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] Outboard motors are typically mounted on the outside of the stern deck and are also known as outboard engines. They are detachable power units installed on the stern deck of boats. Traditional outboard motors usually use internal combustion engines as their power source, converting the chemical energy of fuel into mechanical energy through an internal combustion engine, and then into kinetic energy for the boat's propulsion via mechanical transmission and a propeller. However, outboard motors using internal combustion engines are generally larger and noisier, and their structure is more complex. They are typically speed-controlled via throttle and have a minimum idle speed limit.

[0036] Therefore, such as Figure 1 As shown in the illustration, this application discloses an electric outboard motor assembly 100, including a motor drive assembly 10, a propulsion assembly 20, and a reducer assembly 30. The power from the motor drive assembly 10 to the propulsion assembly 20 is transmitted through a primary planetary gear reduction mechanism 32 and a secondary bevel gear reduction mechanism 33 in the reducer assembly 30. This simplifies the power structure, significantly reduces the number of parts, and reduces the size of the electric outboard motor assembly 100, making its design more compact and lightweight. Furthermore, the electric outboard motor assembly 100 is easier to maintain, has lower noise, and can be speed-adjusted via a switch, eliminating the minimum idle speed limitation. It is also easy to start and stop, has low electricity costs, and reduces operating costs. In addition, the motor drive assembly 10 adopts an independent modular design, facilitating the replacement of motors with different power and torque, and making maintenance more convenient. Furthermore, the use of a first-stage planetary gear reduction mechanism 32 can achieve greater torque transmission, and a larger reduction ratio can be achieved through the first-stage planetary gear reduction mechanism 32 and the second-stage bevel gear reduction mechanism 33. This allows for a reduction in the torque of the motor drive assembly 10 by increasing its speed, thereby reducing costs.

[0037] The following will combine Figure 1 and Figure 2 The electric outboard motor assembly 100 disclosed in the embodiments of this application will be explained and described in detail.

[0038] like Figure 1As shown, the motor drive assembly 10 serves as the power source for the electric outboard motor assembly 100, the reducer assembly 30 is responsible for transmitting and converting power, and the propulsion assembly 20 is used to convert rotational motion into thrust against the water. The reducer assembly 30 may include a reducer housing 31, a primary planetary gear reducer 32, and a secondary bevel gear reducer 33. The power input end of the primary planetary gear reducer 32 is connected to the output end of the motor drive assembly 10. The secondary bevel gear reducer 33 may include a driving bevel gear 331 and a driven bevel gear 332. The driven bevel gear 332 meshes with the driving bevel gear 331. The power input end of the driving bevel gear 331 is connected to the power output end of the primary planetary gear reducer 32, and the driven bevel gear 332 is connected to the propulsion assembly 20. The axes of the driving bevel gear 331 and the driven bevel gear 332 are perpendicular to each other, so as to convert the output power of the motor drive assembly 10 from the vertical direction to the input power of the propulsion assembly 20 in the horizontal direction, thereby forming a T-shaped electric outboard motor assembly 100. In addition, the driving bevel gear 331 can be supported in the reducer housing 31 by a bearing assembly 34. When power is output from the motor drive assembly 10, it passes sequentially through the first-stage planetary gear reduction mechanism 32 and the second-stage bevel gear reduction mechanism 33 of the reducer assembly 30, ultimately driving the propulsion assembly 20. It should be noted that because the reducer assembly 30 employs a two-stage series reduction structure of the first-stage planetary gear reduction mechanism 32 and the second-stage bevel gear reduction mechanism 33, a larger overall reduction ratio is achieved. This allows the motor drive assembly 10 to use a high-speed, high-power-density, and low-cost motor type.

[0039] In some embodiments, such as Figure 1As shown, the motor drive assembly 10 may include a drive motor 11. The drive motor 11 may be a permanent magnet synchronous motor, and it may include a motor housing 111, a motor shaft 112, a motor stator 113, a motor rotor 114, a rotary transformer 115, and a motor end cover 116. The motor shaft 112, motor stator 113, and motor rotor 114 may all be located within the motor housing 111, with the motor rotor 114 mounted on the motor shaft 112. One end of the motor housing 111 may be connected and fixed to the reducer housing 31 by bolts or other fasteners, while the other end of the motor housing 111 is connected to the motor end cover 116. The motor shaft 112 may be connected to the power input end of the first-stage planetary gear reduction mechanism 32 via a spline drive, so that the power of the drive motor 11 can be transmitted to the first-stage planetary gear reduction mechanism 32 via the spline. Furthermore, the winding leads of the motor stator 113 can be gathered together via busbar 117 to form multiple connectors capable of connecting to three-phase lines. The stator of the rotary transformer 115 is fixed to the motor end cover 116, and the rotor of the rotary transformer 115 is mounted on the motor shaft 112 and rotates synchronously with the motor shaft 112. Induced voltage can be obtained through electromagnetic coupling, forming a feedback signal for the continuous position of the motor rotor 114 and transmitting it to the motor controller. The motor controller can then adjust the speed or reverse the direction of the drive motor 11. It should be noted that the motor controller can be integrated into the drive motor 11, forming a relatively compact electric outboard motor assembly 100 that integrates the drive motor 11, the motor controller, and the reducer.

[0040] In some embodiments, such as Figure 1 As shown, the motor housing 111 can be composed of an inner motor housing 1111 and an outer motor housing 1112, both of which can be made of cast aluminum alloy. To address the heat generated by the drive motor 11 during high-power output, the drive motor 11 can be equipped with a water-cooling structure. For example, the inner motor housing 1111 can adopt an inner and outer water jacket design, with O-rings 1121 sealing both sides, thus forming a water-cooled motor structure. This allows for circulating cooling via an external water source, ensuring the drive motor 11 operates within its optimal operating temperature range, thereby improving its continuous output capacity and service life. Alternatively, the motor housing 111 can also be made of profiled motor housing to form a cooling water jacket, achieving the same cooling effect for the drive motor 11; this will not be elaborated upon further here.

[0041] In some embodiments, such as Figure 1As shown, to ensure the stability of the power output of the motor shaft 112, the end of the motor shaft 112 closest to the first-stage planetary gear reduction mechanism 32 is supported on the motor housing 111 by the front bearing 118, and the end of the motor shaft 112 furthest from the first-stage planetary gear reduction mechanism 32 is supported on the motor end cover 116 by the rear bearing 119, thus ensuring the stability of power transmission of the motor shaft 112. Simultaneously, a motor oil seal 1120 is provided on the side of the front bearing 118 closest to the first-stage planetary gear reduction mechanism 32, and the motor oil seal 1120 is located between the motor shaft 112 and the motor housing 111 to prevent oil leakage and protect the iron core and windings inside the drive motor 11 from external contaminants such as dust and water vapor, thereby improving the reliability of the drive motor 11's operation.

[0042] In some embodiments, such as Figure 1 As shown, the first-stage planetary gear reduction mechanism 32 may include a sun gear 321, an internal gear ring 322, a planetary gear assembly 323, and a planet carrier 324. The sun gear 321 can be connected to the output end of the motor drive assembly 10. For example, an external spline can be machined on the motor shaft 112 to mate with the internal spline of the sun gear 321, forming a reliable transmission connection to transmit a large torque, while also providing good alignment and detachability. The internal gear ring 322 can be fixed to the reducer housing 31 through a retaining ring 325. Both the internal gear ring 322 and the reducer housing 31 may be designed with large-module involute or rectangular teeth to restrict the circumferential motion of the internal gear ring 322. Multiple planetary gear assemblies 323 can be used, i.e., two, three, or more planetary gear assemblies 323 can be used, and each planetary gear assembly 323 is respectively disposed between the sun gear 321 and the internal gear ring 322. Each planetary gear assembly 323 may include a planetary gear shaft 3231 and planetary gears 3232 sleeved on the outside of the planetary gear shaft 3231. The planetary gears 3232 can mesh with both the sun gear 321 and the internal gear ring 322. The planet carrier 324 can be connected to the planetary gear shaft 3231, and the planetary output shaft 3241 of the planet carrier 324 can be connected to the drive input shaft 3311 of the drive bevel gear 331 via spline transmission. When the sun gear 321 rotates as the driving gear, it drives the planet gear 3232 to rotate around its own planet gear shaft 3231 and revolve along the inner wall of the fixed internal gear ring 322. Thus, the planet gear 3232's revolve motion drives the planet carrier 324 to rotate at a speed that is lower than that of the sun gear 321 but has a higher torque, and transmits the power to the driving bevel gear 331 of the second-stage bevel gear reduction mechanism 33.

[0043] In some embodiments, such as Figure 1As shown, a planetary bearing 3233 can be provided between the planetary gear 3232 and the planetary gear shaft 3231, and the planetary bearing 3233 can be a needle roller bearing. That is, the planetary gear 3232 can be assembled onto the planetary gear shaft 3231 through the needle roller bearing. A friction-reducing shim is installed between the needle roller bearing and the planet carrier 324 to ensure the stability of the rotation of the planetary gear 3232.

[0044] In some embodiments, such as Figure 1 As shown, an oil collection tray 3242 adapted to the planetary gear shaft 3231 can be provided on the planetary carrier 324, that is, one oil collection tray 3242 can be provided for each planetary gear shaft 3231, so that lubricating oil that can lubricate the planetary bearing 3233 can be stored in the oil collection tray 3242. Among them, an oil supply hole can be opened on the planetary gear shaft 3231, and an oil inlet channel is provided between the oil supply hole of the planetary gear shaft 3231 and the planetary bearing 3233, so that lubricating oil can be supplied to the oil supply hole through the oil collection tray 3242, and the lubricating oil is thrown towards the planetary bearing 3233 under the action of centrifugal force generated when the planetary carrier 324 rotates, so as to achieve the effect of lubricating the planetary bearing 3233.

[0045] In some embodiments, such as Figure 1 As shown, the oil collection pan 3242 can be in the shape of a shallow dish, a spoon, or any concave structure that can effectively hold and carry lubricating oil during rotation. The oil collection pan 3242 can be located at a position with a large rotation radius of the planetary carrier 324 and has an opening facing the opposite direction of rotation so that lubricating oil can be supplied to the oil supply hole through the oil collection pan 3242. Under the action of centrifugal force generated when the planetary carrier 324 rotates, the lubricating oil is thrown towards the planetary bearing 3233 to achieve the effect of lubricating the planetary bearing 3233.

[0046] It should be noted that in the above embodiments, the planetary gear 3232, planetary gear shaft 3231, planetary bearing 3233, planetary carrier 324, planetary output shaft 3241, oil collection pan 3242 and friction reducing pad can be assembled as a small assembly to facilitate the assembly of the electric boat outboard motor assembly 100.

[0047] In some embodiments, such as Figure 1As shown, the bearing assembly 34 may include a double-row tapered bearing 341, which can be sleeved on the drive input shaft 3311 of the drive bevel gear 331 to support the rotation of the drive bevel gear 331, and to minimize the axial arrangement space, making assembly more convenient. Meanwhile, a drive gear adjusting shim 342 may be provided at one end of the double-row tapered bearing 341 near the first-stage planetary gear reduction mechanism 32, so that the installation distance of the drive bevel gear 331 can be adjusted by changing the thickness of the drive gear adjusting shim 342. A drive gear limiting retaining ring 343 is provided at the other end of the double-row tapered bearing 341 to restrict the axial movement of the drive bevel gear 331. The planetary output shaft 3241 of the planetary carrier 324 can be inserted into the drive input shaft 3311 of the drive bevel gear 331 and connected to the drive input shaft 3311 via a spline drive. For example, an external spline can be provided on the planetary output shaft 3241, and an internal spline can be provided on the drive input shaft 3311 to mate with the external spline on the planetary output shaft 3241, so as to achieve a reliable transmission connection between the planetary output shaft 3241 of the planetary carrier 324 and the drive input shaft 3311 of the drive bevel gear 331. In addition, the planetary output shaft 3241 of the planetary carrier 324 and the drive input shaft 3311 of the drive bevel gear 331 can be connected by a locking bolt 35, so that the locking bolt 35 can provide axial preload to the double-row tapered bearing 341. It should be noted that in the above embodiments, the inner ring of the double-row tapered bearing 341 has an integrated elastic spacer, which allows the locking bolt 35 to provide axial preload to the double-row tapered bearing 341, ensuring that the double-row tapered bearing 341 has good rigidity.

[0048] In some embodiments, such as Figure 2As shown, the active input shaft 3311 of the active bevel gear 331 can also pass through the planetary output shaft 3241 of the planetary carrier 324 and be connected to the planetary output shaft 3241 via spline transmission. For example, an internal spline can be provided on the planetary output shaft 3241, and an external spline can be provided on the active input shaft 3311 to mate with the internal spline on the planetary output shaft 3241, so as to achieve a reliable transmission connection between the planetary output shaft 3241 of the planetary carrier 324 and the active input shaft 3311 of the active bevel gear 331. Meanwhile, the bearing assembly 34 may include a first tapered bearing 344, a second tapered bearing 345, and an elastic spacer 346, and the elastic spacer 346 can be supported on the inner rings of the first tapered bearing 344 and the second tapered bearing 345. The first tapered bearing 344 can be fitted onto the planetary output shaft 3241, and the second tapered bearing 345 can be fitted onto the drive input shaft 3311. The drive input shaft 3311 is provided with an external thread so that it can be threadedly engaged with the locking nut 36, thereby connecting the drive input shaft 3311 and the planetary output shaft 3241. Simultaneously, the locking nut 36 provides axial preload to the first tapered bearing 344 and the second tapered bearing 345, causing the elastic spacer 346 to be compressed and generate elastic force. This ensures good rigidity for both the first and second tapered bearings 344 and provides continuous elastic force for subsequent use, ensuring that the first and second tapered bearings 344 and 345 always have preload. Furthermore, a drive gear adjusting shim 342 can be provided at the end of the second tapered bearing 345 near the first tapered bearing 344. By changing the thickness of the drive gear adjusting shim 342, the installation distance of the drive bevel gear 331 can be adjusted. It should be noted that, in order to accommodate the compression deformation of the elastic spacer 346, a clearance space can be provided on the inner side of the reducer housing 31 to avoid the compression deformation of the elastic spacer 346.

[0049] In some embodiments, such as Figure 1As shown, the secondary bevel gear reduction mechanism 33 may further include a driven gear shaft 333, which can be connected to the driven bevel gear 332 via bolts or other fasteners. Simultaneously, both ends of the driven gear shaft 333 can be supported within the reducer housing 31 via shaft bearings 334 to ensure the reliability of the driven gear shaft 333's rotation. Furthermore, a driven gear adjusting shim 335 can be provided between the opposite sides of the two shaft bearings 334 and the reducer housing 31, thereby adjusting the contact pattern and tooth backlash between the driven bevel gear 332 and the driving bevel gear 331 by changing the thickness of the driven gear adjusting shim 335. The driven gear shaft 333 can be connected to the propulsion assembly 20 via a spline drive, allowing torque to be output through the driven gear shaft 333. The power from the drive motor 11 is further reduced in speed through the secondary bevel gear reduction mechanism 33, further amplifying the torque and enabling vertical torque conversion.

[0050] In some embodiments, such as Figure 1 As shown, the propulsion assembly 20 may include a propeller 21, and the rotating shaft 211 of the propeller 21 and the driven gear shaft 333 may be connected by a spline drive. For example, the rotating shaft 211 of the propeller 21 may be provided with an external spline, and the driven gear shaft 333 may be provided with an internal spline that matches the external spline of the rotating shaft 211, so as to achieve a reliable transmission connection between the propeller 21 and the driven gear shaft 333, thereby transmitting power to the rotation of the propeller 21 to generate thrust for the electric boat. At the same time, the rotating shaft 211 of the propeller 21 is provided with a stepped portion that facilitates positioning with one end of the driven gear shaft 333, and the rotating shaft 211 of the propeller 21 may be limited to the other end of the driven gear shaft 333 by a shaft retaining ring 23, so as to achieve axial limiting of the rotating shaft 211 of the propeller 21, thereby ensuring a reliable transmission connection between the rotating shaft 211 of the propeller 21 and the driven gear shaft 333. In addition, a seal 22 may be provided between the rotating shaft 211 and the reducer housing 31, and the seal 22 may be a water-oil sealing ring to achieve water and oil sealing between the propeller 21 and the reducer housing 31.

[0051] In some embodiments, such as Figure 1 As shown, the reducer housing 31 can adopt an L-shaped structure, and in order to facilitate the installation of the propulsion assembly 20, an opening can be provided at the corner of the reducer housing 31 to facilitate the installation of the propulsion assembly 20. At the same time, a cover plate 37 can be installed at the opening. The cover plate 37 can be connected to the reducer housing 31 by bolts or other fasteners to facilitate the installation and maintenance of the propulsion assembly 20.

[0052] The electric outboard motor assembly 100 disclosed in this application connects the power input end of the first-stage planetary gear reduction mechanism 32 of the reducer assembly 30 to the output end of the motor drive assembly 10, and connects the power input end of the driving bevel gear 331 of the second-stage bevel gear reduction mechanism 33 to the power output end of the first-stage planetary gear reduction mechanism 32. At the same time, the driven bevel gear 332 of the second-stage bevel gear reduction mechanism 33 is connected to the propulsion assembly 20. The axes of the driving bevel gear 331 and the driven bevel gear 332 are perpendicular to each other, so as to convert the output power of the motor drive assembly 10 from the vertical direction to the input power of the propulsion assembly 20 in the horizontal direction. Meanwhile, the driving bevel gear 331 is supported in the reducer housing 31 by the bearing assembly 34.

[0053] The electric outboard motor assembly 100 disclosed in this application transmits power from the motor drive assembly 10 to the propulsion assembly 20 via a primary planetary gear reduction mechanism 32 and a secondary bevel gear reduction mechanism 33. This simplifies the power structure, significantly reduces the number of parts, and decreases the size of the electric outboard motor assembly 100, resulting in a more compact and lightweight design. Furthermore, the electric outboard motor assembly 100 is easier to maintain, has lower noise, and can be speed-adjusted via a switch, eliminating the minimum idle speed limitation. It is also easy to start and stop, has low electricity costs, and reduces operating costs. In addition, the motor drive assembly 10 adopts an independent modular design, facilitating the replacement of motors with different power and torque, and making maintenance more convenient. Moreover, the primary planetary gear reduction mechanism 32 enables greater torque transmission, and the secondary bevel gear reduction mechanism 33 achieves a larger reduction ratio. This allows for a reduction in the torque of the motor drive assembly 10 by increasing its rotational speed, thereby reducing costs.

[0054] 10. An electric boat, characterized in that it includes an electric boat outboard motor assembly as described in any one of claims 1 to 9.

[0055] The terminology used in the above embodiments is for the purpose of describing specific embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions "a," "an," "the," "the," "the," and "this" are intended to also include expressions such as "one or more," unless the context clearly indicates otherwise. It should also be understood that in the embodiments of this application, "one or more" refers to one, two, or more; "and / or" describes the relationship between related objects, indicating that three relationships may exist; for example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0056] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0057] The "multiple" mentioned in the embodiments of this application refers to two or more. It should be noted that in the description of the embodiments of this application, terms such as "first" and "second" are used only for the purpose of distinguishing descriptions and should not be construed as indicating or implying relative importance, nor should they be construed as indicating or implying order.

[0058] The terms "parallel" and "perpendicular" used in this application refer to "basically parallel" and "basically perpendicular" in practical operation. "Basically parallel" can be understood as parallelism with a certain degree of error, and similarly, "basically perpendicular" can be understood as perpendicularity with a certain degree of error.

[0059] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electric outboard motor assembly, characterized in that, include: Motor drive assembly (10); Propulsion assembly (20); The reducer assembly (30) includes a reducer housing (31), a first-stage planetary gear reducer mechanism (32), and a second-stage bevel gear reducer mechanism (33). The power input end of the first-stage planetary gear reducer mechanism (32) is connected to the output end of the motor drive assembly (10). The second-stage bevel gear reducer mechanism (33) includes an active bevel gear (331) and a passive bevel gear (332) meshing with the active bevel gear (331). The power input end of the active bevel gear (331) is connected to the power output end of the first-stage planetary gear reducer mechanism (32). The passive bevel gear (332) is connected to the propulsion assembly (20). The axes of the active bevel gear (331) and the passive bevel gear (332) are perpendicular to each other, and the active bevel gear (331) is supported in the reducer housing (31) by a bearing assembly (34).

2. The electric outboard motor assembly according to claim 1, characterized in that, The first-stage planetary gear reduction mechanism (32) includes: Sun gear (321), which is connected to the output end of the motor drive assembly (10) in a transmission connection; An internal gear ring (322) is connected inside the reducer housing (31); Planetary gear assembly (323), the planetary gear assembly (323) includes a planetary gear shaft (3231) and planetary gears (3232) sleeved on the outside of the planetary gear shaft (3231), the planetary gears (3232) meshing with the sun gear (321) and the internal gear ring (322) respectively; Planetary carrier (324), which is connected to the planetary gear shaft (3231), and the planetary output shaft (3241) of the planetary carrier (324) is connected to the active input shaft (3311) of the active bevel gear (331).

3. The electric outboard motor assembly according to claim 2, characterized in that, A planetary bearing (3233) is provided between the planetary gear (3232) and the planetary gear shaft (3231), and an oil collection tray (3242) is provided on the planetary carrier (324). The oil collection tray (3242) is used to store lubricating oil that can lubricate the planetary bearing (3233).

4. The electric outboard motor assembly according to claim 3, characterized in that, The planetary gear shaft (3231) is provided with an oil supply hole, and the oil collection plate (3242) can provide the lubricating oil to the oil supply hole. An oil inlet channel is provided between the oil supply hole of the planetary gear shaft (3231) and the planetary bearing (3233) so that the lubricating oil is thrown towards the planetary bearing (3233) under the action of centrifugal force generated when the planet carrier (324) rotates.

5. The electric outboard motor assembly according to claim 2, characterized in that, The bearing assembly (34) includes a double-row tapered bearing (341), which is sleeved on the drive input shaft (3311) of the drive bevel gear (331). One end of the double-row tapered bearing (341) is provided with a drive gear adjusting shim (342), and the other end of the double-row tapered bearing (341) is provided with a drive gear limiting retaining ring (343). The planetary output shaft (3241) of the planetary carrier (324) passes through the drive input shaft (3311) of the drive bevel gear (331) and is connected to the drive input shaft (3311) in a driving connection. The planetary output shaft (3241) of the planetary carrier (324) and the drive input shaft (3311) of the drive bevel gear (331) are connected by a locking bolt (35) so that the locking bolt (35) can provide axial preload to the double-row tapered bearing (341).

6. The electric outboard motor assembly according to claim 2, characterized in that, The active input shaft (3311) of the active bevel gear (331) passes through the planetary output shaft (3241) of the planetary carrier (324) and is connected to the planetary output shaft (3241) for transmission. The bearing assembly (34) includes a first tapered bearing (344), a second tapered bearing (345), and an elastic spacer (346). The elastic spacer (346) is supported on the inner rings of the first tapered bearing (344) and the second tapered bearing (345). The first tapered bearing (344) is sleeved on the planetary output shaft (3241), and the second tapered bearing... The bearing (345) is sleeved on the active input shaft (3311), and the active input shaft (3311) is provided with an external thread for threaded engagement with the locking nut (36). The active input shaft (3311) and the planetary output shaft (3241) are connected through the locking nut (36) so that the locking nut (36) can provide axial preload for the first tapered bearing (344) and the second tapered bearing (345). The second tapered bearing (345) is provided with an active gear adjusting shim (342) at one end near the first tapered bearing (344).

7. The electric outboard motor assembly according to claim 1, characterized in that, The secondary bevel gear reduction mechanism (33) further includes a passive gear shaft (333), which is connected to the passive bevel gear (332). The passive gear shaft (333) is supported in the reducer housing (31) by a shaft bearing (334). A passive gear adjusting shim (335) is provided between the shaft bearing (334) and the reducer housing (31). The passive gear shaft (333) is connected to the propulsion assembly (20) in a transmission connection.

8. The electric outboard motor assembly according to claim 7, characterized in that, The propulsion assembly (20) includes a propeller (21), the rotating shaft (211) of the propeller (21) is connected to the driven gear shaft (333) and a seal (22) is provided between the rotating shaft (211) and the reducer housing (31).

9. The electric outboard motor assembly according to any one of claims 1 to 8, characterized in that, The motor drive assembly (10) includes a drive motor (11), which includes a motor housing (111), a motor shaft (112), a motor stator (113), a motor rotor (114), a rotary transformer (115), and a motor end cover (116). The motor shaft (112), the motor stator (113), and the motor rotor (114) are all disposed inside the motor housing (111), and the motor rotor (114) is sleeved on the motor shaft (112). The motor shaft (112) is connected to the power input end of the first-stage planetary gear reduction mechanism (32). One end of the motor housing (111) is connected to the reducer housing (31) by fasteners, and the other end of the motor housing (111) is connected to the motor end cover (116). The winding leads of the motor stator (113) are gathered through busbar (117) to form multiple connectors for connecting to the three-phase line. The stator of the rotary transformer (115) is fixed on the motor end cover (116). The rotor of the rotary transformer (115) is mounted on the motor shaft (112) and rotates synchronously with the motor shaft (112).

10. An electric boat, characterized in that, Includes the electric outboard motor assembly (100) as described in any one of claims 1 to 9.

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