Gear assembly, hub assembly and vehicle

Abstract

The utility model discloses a gear assembly, a hub assembly and a vehicle, relates to the technical field of vehicles, and aims to solve the problem of how to reduce gear damage caused by lock plate damage. The gear assembly comprises a planet carrier, a gear assembly and a first limiting piece, the gear assembly can comprise a gear shaft, the gear shaft is connected to the planet carrier, the first limiting piece is connected to one end of the gear shaft in the axial direction of the gear shaft, and the first limiting piece is connected to the planet carrier.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a gear assembly, a hub assembly and a vehicle. BACKGROUND

[0002] With the continuous improvement of vehicle performance, the driving system of the vehicle is also being continuously optimized. The hub planetary gear is one of the core components in the driving system, mainly used for power transmission and distribution.

[0003] The hub planetary gear assembly can include a sun gear, a planet gear, a planet carrier and a ring gear. The planet gear is connected to the planet carrier through a planet gear shaft to drive the planet carrier to rotate. In order to prevent the planet gear shaft from being axially separated from the planet carrier during movement, a locking plate is usually arranged at the end of the planet carrier to limit the planet gear shaft.

[0004] However, when the planet gear rotates in meshing with the sun gear and the ring gear, an axial force will be generated on the planet gear shaft. If the axial force is greater than the shear strength of the locking plate, the locking plate will be pushed out or broken, and the fragments of the locking plate may fall into the gear meshing area, causing damage to the gear and affecting the normal transmission of the gear. CONTENT OF THE UTILITY MODEL

[0005] The purpose of the present application is to provide a gear assembly, a hub assembly and a vehicle, aiming to solve the problem of how to reduce the damage of the locking plate to the gear.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] In a first aspect, the present application provides a gear assembly, which can include a planet carrier, a gear assembly and a first limiting piece. The gear assembly can include a gear shaft connected to the planet carrier. Along the axial direction of the gear shaft, the first limiting piece is arranged at one end of the gear shaft, and the first limiting piece is connected to the planet carrier.

[0008] Since the first limiting piece and the gear shaft are arranged along the axial direction of the gear shaft, and the first limiting piece is arranged on the planet carrier, when the gear shaft moves axially relative to the planet carrier, the first limiting piece can limit the axial movement of the gear shaft, thereby offsetting part of the axial force of the gear shaft, and reducing the possibility of the locking plate being pushed out or broken due to excessive axial force. The damage of the gear caused by the damage of the locking plate is avoided.

[0009] In some embodiments, the planet carrier can be provided with a mounting hole, and at least part of the gear shaft is arranged in the mounting hole. The planet carrier can also be provided with a containing groove in communication with the mounting hole, and the first limiting piece is arranged in the containing groove, and the end face of the gear shaft is arranged towards the first limiting piece.

[0010] Since the end face of the gear shaft is arranged towards the first limiting member, when the gear shaft axially displaces relative to the planet carrier, the end face of the gear shaft will abut against the first limiting member. Since the first limiting member is connected to the planet carrier and arranged in the accommodating groove, after the gear shaft is limited by the first limiting member, the gear shaft is not easy to be pulled out of the mounting hole, and then the gear shaft will not apply axial force to the locking piece, so the locking piece will not be pushed out or cut off by the gear shaft.

[0011] In some embodiments, the first limiting member can be clamped in the accommodating groove. Since the first limiting member is clamped in the accommodating groove, the first limiting member can interact with the accommodating groove to limit the displacement of the first limiting member, and then when the end face of the gear shaft abuts against the first limiting member, the first limiting member interacts with the accommodating groove, so as to offset the axial force of the gear shaft towards the locking piece, thereby reducing the possibility of damage to the locking piece.

[0012] In some embodiments, the outer diameter of the first limiting member can be adjustably arranged, and the outer peripheral wall of the first limiting member can abut against the inner peripheral wall of the accommodating groove.

[0013] Since the outer diameter of the first limiting member is adjustable, and the outer peripheral wall of the first limiting member can abut against the inner peripheral wall of the accommodating groove, the outer diameter of the first limiting member when not installed in the accommodating groove can be greater than the outer diameter of the first limiting member after being installed in the accommodating groove, so that the inner wall surface of the accommodating groove can be pressed by the outer peripheral wall of the first limiting member, thereby enabling the first limiting member to be clamped in the accommodating groove, and the accommodating groove can limit the first limiting member, and then the first limiting member can limit the gear shaft.

[0014] In some embodiments, the first limiting member can include a clamping spring.

[0015] Since the clamping spring can elastically deform radially, when the clamping spring is installed in the accommodating groove, the outer diameter of the clamping spring can be adjusted first so that the outer diameter of the clamping spring is smaller than the inner diameter of the accommodating groove, thereby facilitating the installation of the clamping spring. After the clamping spring is installed in the accommodating groove, the restriction on the outer diameter of the clamping spring is released, so that the clamping spring abuts against the inner peripheral wall of the accommodating groove under the action of the elastic restoring force. In this way, the clamping spring can be clamped in the accommodating groove. Since the first limiting member is arranged at one end of the gear shaft along the axial direction of the gear shaft, when the gear assembly rotates, the clamping spring can limit the gear shaft, thereby reducing the axial displacement of the gear shaft and ensuring the stability of the system.

[0016] In some embodiments, the clamping spring can include a ring-shaped body, and the ring-shaped body is provided with a notch communicating the outer peripheral wall and the inner peripheral wall of the ring-shaped body.

[0017] Since the annular body is provided with the gap, the gap can communicate the outer peripheral wall and the inner peripheral wall of the annular body, so that the outer diameter of the circlip can be adjusted by adjusting the opening of the gap. Since the circlip can be elastically deformed, the circlip can abut against the inner wall surface of the accommodating groove, so that the circlip is limited.

[0018] In some embodiments, the first limiting piece can be welded in the accommodating groove.

[0019] In this way, the first limiting piece and the accommodating groove are fixedly connected. Since the end surface of the gear shaft faces the first limiting piece, the first limiting piece and the accommodating groove are fixedly connected, so that the gear shaft is not easy to be pulled out of the mounting hole, thereby isolating the gear shaft and the locking piece, so that the locking piece is not easy to be subjected to the axial force from the gear shaft, and the risk of damage is reduced.

[0020] In some embodiments, the gear assembly can further include a second limiting piece. The second limiting piece is arranged between the planetary carrier and the gear shaft in the radial direction of the gear shaft, and is adapted to limit the relative rotation between the planetary carrier and the gear shaft.

[0021] Since the planetary carrier is connected with the gear shaft, the gear shaft can drive the planetary carrier to rotate by rotating around the sun gear. If the gear shaft and the planetary carrier rotate relatively, the transmission efficiency between the gear shaft and the planetary carrier will be reduced, which is not conducive to energy saving and efficiency improvement of the vehicle. Therefore, the second limiting piece is arranged between the planetary carrier and the gear shaft in the radial direction of the gear shaft, so as to limit the relative rotation between the planetary carrier and the gear shaft, thereby enabling the planetary carrier and the gear shaft to rotate synchronously, and further enabling the power of the drive system to be transmitted to the planetary carrier efficiently.

[0022] In some embodiments, the circumferential wall surface of the gear shaft can be provided with a first limiting groove, and the planetary carrier can be provided with a second limiting groove arranged opposite to the first limiting groove. At least part of the second limiting piece is arranged in the first limiting groove and at least part of the second limiting piece is arranged in the second limiting groove.

[0023] Since at least part of the second limiting piece is arranged in the first limiting groove and at least part of the second limiting piece is arranged in the second limiting groove, under the action of the second limiting piece, the gear shaft and the planetary carrier will not rotate relatively, thereby improving the transmission efficiency between the gear shaft and the planetary carrier.

[0024] In addition, the second limiting piece can limit the relative position of the first limiting groove and the second limiting groove, thereby reducing the transmission error between the gear shaft and the planetary carrier, and improving the stability and reliability of the transmission of the entire gear assembly.

[0025] In some embodiments, the second limiting piece can include a limiting pin or a limiting ball.

[0026] By using a limiting pin or limiting ball within the first and second limiting grooves, the relative position between the planetary carrier and the gear shaft can be ensured, reducing misalignment during movement. This limiting pin or limiting ball has a simple structure, is easy to manufacture and install, and can save on production and processing costs.

[0027] In some embodiments, the gear assembly may further include a locking plate, which is fixedly connected to the planetary carrier and is located at the end of the first limiting member away from the gear shaft.

[0028] In this way, when the gear shaft and the planetary carrier are relatively displaced, the locking plate, which is fixedly connected to the planetary carrier and located at the end of the first limiting member away from the gear shaft, can also limit the axial movement of the gear shaft, preventing the gear shaft from coming out of the mounting hole and causing the transmission of the gear assembly to fail.

[0029] In some embodiments, the projection of the first limiting member coincides with the projection of the locking piece along the axial direction of the gear shaft.

[0030] In this way, when the first limiting member is pushed out by the gear shaft, it can abut against the locking plate, preventing it from falling and getting stuck in the gear assembly. Furthermore, since the first limiting member has a certain strength, it can resist part of the axial force applied by the gear shaft, thereby reducing damage to the locking plate.

[0031] In some embodiments, the gear assembly may further include a connecting bolt, and the locking plate is provided with a connecting hole, through which the connecting bolt is fixedly connected to the planetary carrier.

[0032] This strengthens the connection between the locking plate and the planetary carrier, preventing the locking plate from being pushed out by axial force, which would cause the gear shaft to come out of the mounting hole of the planetary carrier.

[0033] In some embodiments, the connecting bolt may include a first bolt and a second bolt, which are respectively disposed on both sides of the gear shaft.

[0034] This further strengthens the connection between the locking plates around the gear shaft and the planetary carrier, reducing the possibility of the gear shaft coming out of the mounting hole of the planetary carrier.

[0035] Secondly, this application also provides a wheel hub assembly, which may include the aforementioned gear assembly.

[0036] Thirdly, this application also provides a vehicle that may include the aforementioned gear assembly or wheel assembly. It should be noted that the technical effects of the implementations of the second and third aspects can be found in the corresponding implementations of the first aspect, and will not be repeated here. Attached Figure Description

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0038] Figure 1 A structural schematic diagram of a vehicle is provided for the embodiments of the present application.

[0039] Figure 2 A structural schematic diagram of a gear assembly is provided for the embodiments of the present application.

[0040] Figure 3 A sectional view of the gear assembly is shown. Figure 2

[0041] A partial structural schematic diagram of the gear assembly is shown. Figure 4 Figure 2

[0042] Figure 5 An exploded schematic diagram of the gear assembly is shown. Figure 4

[0043] An exploded schematic diagram of the gear assembly changing the second limiting member is shown. Figure 6 Figure 4

[0044] Reference signs: 1000, vehicle; 100, vehicle body; 200, wheel; 201, gear assembly;

[0045] 1, mounting bolt; 2, planet carrier; 21, mounting hole; 22, first wall surface; 23, accommodating groove; 24, second limiting groove; 3, gear assembly; 31, planetary gear assembly; 311, gear shaft; 3111, first limiting groove; 312, planetary gear bearing; 313, planetary gear; 32, sun gear assembly; 321, sun gear; 4, locking plate; 41, bent portion; 5, first limiting member; 51, circlip; 511, annular body; 512, notch; 6, connecting bolt; 7, second limiting member; 71, limiting pin; 72, limiting ball; 8, housing; 9, connecting bearing; 10, round nut. DETAILED DESCRIPTION

[0046] ​​​​The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0047] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or relative position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. Unless otherwise specified, the above directional description can be flexibly arranged in the actual application process under the condition of meeting the relative position relationship shown in the drawings.

[0048] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0049] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting", "communicating" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected. It can be directly connected, or indirectly connected through an intermediate medium. It can be the communication between the two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] In the embodiments of the present application, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, article or device. Without more limitation, the element defined by the sentence "including a" does not exclude the presence of another identical element in the process, article or device including the element.

[0051] In the embodiments of the present application, the words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration, in no way limiting. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or having more advantages than other embodiments or design schemes. Rather, the words such as "exemplary" or "for example" are used in the specific manner to present the relevant concept.

[0052] The present application provides a vehicle 1000. The vehicle 1000 can be a pure electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, a range-extended electric vehicle, a fuel vehicle, etc. The vehicle 1000 can also be a sedan, a van, a bus, a truck, a trailer, etc.

[0053] Please refer to Figure 1 , Figure 1 A structural schematic diagram of a vehicle 1000 provided by the embodiments of the present application. The vehicle 1000 comprises a vehicle body 100 and a wheel 200. The vehicle body 100 is used for passengers to ride and carry articles, the wheel 200 is installed below the vehicle body 100, used for carrying the vehicle body 100, and can roll on the road surface to make the vehicle 1000 travel.

[0054] The wheel 200 can comprise a rim assembly and a tire, a hub assembly can be used to connect the wheel 200 and the suspension system of the vehicle 1000, and can transmit the power of the drive system to the wheel 200, and the tire is arranged between the hub assembly and the ground to make the wheel 200 move smoothly on the ground.

[0055] Please refer to Figure 2 , Figure 2 A structural schematic diagram of a gear assembly 201 provided by the embodiments of the present application, wherein the hub assembly can comprise a gear assembly 201 and a hub, the gear assembly 201 is connected between the drive system and the hub to transmit the power of the drive system to the hub, for example, the gear assembly 201 can be a planetary gear assembly, a parallel shaft gear assembly or a bevel gear assembly, etc.

[0056] In some embodiments, the gear assembly 201 can be provided with a mounting bolt 1, which can be fastened and connected with the hub to transmit the power of the drive system to the hub, so as to make the hub rotate.

[0057] In some embodiments, the gear assembly 201 can include a planet carrier 2 and a gear assembly 3. The gear assembly 3 can include a planetary gear assembly 31 and a sun gear assembly 32, and the driving system of the vehicle 1000 is connected to the sun gear assembly 32 to input power to the sun gear assembly 32. The planetary gear assembly 31 can be disposed around the sun gear assembly 32 and drivingly connected to the sun gear assembly 32 to transmit power of the sun gear assembly 32 to the planetary gear assembly 31.

[0058] Please refer to Figure 2 and Figure 3 , Figure 3 for Figure 2 the sectional view of the gear assembly 201, wherein the planetary gear assembly 31 can include a gear shaft 311, a planetary gear bearing 312, and a planetary gear 313, the sun gear assembly 32 can include a sun gear 321, the planetary gear 313 can be engaged with the sun gear 321, the planetary gear 313 is connected to the gear shaft 311 to transmit power of the driving system to the gear shaft 311, and the planetary gear bearing 312 can be sleeved on the gear shaft 311 to support the gear shaft 311 and make the rotation of the gear shaft 311 smoother.

[0059] The gear shaft 311 is connected to the planet carrier 2. By connecting the gear shaft 311 to the planet carrier 2, the power of the gear shaft 311 can be transmitted to the planet carrier 2 to drive the planet carrier 2 to rotate. The planet carrier 2 can be fixedly connected to the hub, thereby driving the hub to rotate to drive the vehicle 1000 to move.

[0060] In some embodiments, the mounting bolt 1 can be disposed on the planet carrier 2. Since the mounting bolt 1 can be fastened to the hub, the power on the planet carrier 2 can be transmitted to the hub, thereby driving the hub to rotate.

[0061] Please refer to Figures 2 to 5 , Figure 4 for Figure 2 the partial structure schematic view of the gear assembly 201, Figure 5 for Figure 4 the exploded schematic view of the gear assembly 201, in some embodiments, the planet carrier 2 can be provided with a mounting hole 21, and at least part of the gear shaft 311 is disposed in the mounting hole 21.

[0062] In some possible structural designs, one end of the gear shaft 311 is disposed in the mounting hole 21, and the other end of the gear shaft 311 extends out of the mounting hole 21 to cooperate with the planetary gear 313, thereby enabling the planetary gear 313 to engage with the sun gear 321 to transmit the power output by the driving system.

[0063] Specifically, the planet carrier 2 can include a first wall surface 22, and the first wall surface 22 is provided with a mounting opening, and the mounting opening is in communication with the mounting hole 21, so that the gear shaft 311 is mounted in the mounting hole 21, and at least part of the gear shaft 311 can protrude from the side of the planet carrier 2 away from the first wall surface 22.

[0064] In some embodiments, the planet gear 313 and the sun gear 321 can be straight gears, and the planet gear 313 and the sun gear 321 can also be helical gears, and the planet gear 313 and the sun gear 321 can also be spiral gears.

[0065] When the planet gear 313 and the sun gear 321 are helical gears or spiral gears, the gear shaft 311 can be subjected to an axial force during meshing transmission of the gears, so as to cause axial displacement of the gear shaft 311 and the planet carrier 2.

[0066] In addition, when the vehicle 1000 is subjected to sudden acceleration, braking or jolting, the impact and vibration of the hub can cause relative displacement between the planet carrier 2 and the gear shaft 311.

[0067] In order to prevent the gear shaft 311 from being pulled out of the mounting hole 21 in the planet carrier 2, in some embodiments, the gear assembly 201 can include a locking piece 4, which is fixedly connected to the planet carrier 2, and the locking piece 4 can be connected to the first wall surface 22.

[0068] In this way, when the gear shaft 311 and the planet carrier 2 are relatively displaced, since the locking piece 4 is fixedly connected to the planet carrier 2 and connected to the first wall surface 22, the locking piece 4 can limit the axial movement of the gear shaft 311, preventing the gear shaft 311 from being pulled out of the mounting hole 21, and causing transmission failure of the gear assembly 201.

[0069] However, when the axial force of the gear shaft 311 on the locking piece 4 is greater than the shear strength of the locking piece 4, the locking piece 4 can be pushed out or sheared off by the gear shaft 311, and the fragments of the locking piece 4 can fall into the gear meshing area, thereby causing gear tooth failure.

[0070] Please refer to Figure 2 , Figure 3 and Figure 5 Therefore, the gear assembly 201 can include a first limiting piece 5, which is arranged at one end of the gear shaft 311 in the axial direction of the gear shaft 311, and the first limiting piece 5 is connected to the planet carrier 2.

[0071] Since the first limiting member 5 and the gear shaft 311 are arranged along the axial direction of the gear shaft 311, and the first limiting member 5 is arranged on the planet carrier 2, when the gear shaft 311 moves axially relative to the planet carrier 2, the first limiting member 5 can limit the axial movement of the gear shaft 311, so as to offset part of the axial force of the gear shaft 311, thereby reducing the possibility of the lock piece 4 being pushed out or sheared due to excessive axial force, so as to avoid gear damage caused by the destruction of the lock piece 4.

[0072] In some embodiments, the lock piece 4 can be arranged at the end of the first limiting member 5 away from the gear shaft 311, that is, the first limiting member 5 can be arranged between the gear shaft 311 and the lock piece 4. Since the first limiting member 5 can offset part of the axial force of the gear shaft 311, the axial force acting on the lock piece 4 can be reduced, thereby reducing the possibility of the lock piece 4 being pushed out or sheared, and further avoiding gear damage caused by the destruction of the lock piece 4.

[0073] In some embodiments, the planet carrier 2 can further be provided with a receiving groove 23 in communication with the mounting hole 21, and the first limiting member 5 is arranged in the receiving groove 23, and the end face of the gear shaft 311 is arranged towards the first limiting member 5.

[0074] Since the end face of the gear shaft 311 is arranged towards the first limiting member 5, when the gear shaft 311 moves axially relative to the planet carrier 2, the end face of the gear shaft 311 will abut against the first limiting member 5. Since the first limiting member 5 is arranged in the receiving groove 23, after the gear shaft 311 is limited by the first limiting member 5, the gear shaft 311 is not easy to be pulled out of the mounting hole 21, and the gear shaft 311 is not easy to apply axial force to the lock piece 4, so that the lock piece 4 is not easy to be pushed out or sheared by the gear shaft 311.

[0075] In addition, the first limiting member 5 is arranged in the receiving groove 23, which can facilitate the installation and positioning of the first limiting member 5, and the structure is simple and convenient to install.

[0076] Please refer to Figures 2 to 5 In some embodiments, the first limiting member 5 can be clamped in the receiving groove 23. Since the first limiting member 5 is clamped in the receiving groove 23, the first limiting member 5 can interact with the receiving groove 23 to limit the displacement of the first limiting member 5, so that when the end face of the gear shaft 311 abuts against the first limiting member 5, the first limiting member 5 interacts with the receiving groove 23 to offset the axial force of the gear shaft 311 towards the lock piece 4, thereby reducing the possibility of damage to the lock piece 4.

[0077] In some embodiments, the outer diameter of the first limiting member 5 is adjustably arranged, and the outer peripheral wall of the first limiting member 5 can abut against the inner peripheral wall of the receiving groove 23.

[0078] Since the outer diameter of the first limiting piece 5 is adjustable, and the outer peripheral wall of the first limiting piece 5 can abut against the inner peripheral wall of the accommodating groove 23, the outer diameter of the first limiting piece 5 when not installed in the accommodating groove 23 can be larger than the outer diameter of the first limiting piece 5 after being installed in the accommodating groove 23, so that the inner wall surface of the accommodating groove 23 can be pressed by the outer peripheral wall of the first limiting piece 5, thereby enabling the first limiting piece 5 to be clamped in the accommodating groove 23 to limit the first limiting piece 5.

[0079] In some embodiments, the first limiting piece 5 can be elastically deformed. In this way, by the elastic deformation of the first limiting piece 5, the outer diameter of the first limiting piece 5 can be adjusted. When the first limiting piece 5 is not installed in the accommodating groove 23 on the planet carrier 2, the outer diameter of the first limiting piece 5 is larger. When the first limiting piece 5 is installed in the accommodating groove 23, the first limiting piece 5 is elastically compressed to reduce the outer diameter of the first limiting piece 5, so that the first limiting piece 5 can be accommodated in the accommodating groove 23.

[0080] Since the first limiting piece 5 is elastically compressed to reduce the outer diameter of the first limiting piece 5, the inner peripheral wall of the accommodating groove 23 can be pressed by the force of the first limiting piece 5 resisting elastic compression, so that the inner peripheral wall of the accommodating groove 23 can abut against the outer peripheral wall of the first limiting piece 5. In this way, the looseness between the first limiting piece 5 and the accommodating groove 23 can be reduced, thereby limiting the first limiting piece 5, further limiting the gear shaft 311, and offsetting the axial force of the gear shaft 311.

[0081] In some embodiments, the first limiting piece 5 can be interference-fitted with the accommodating groove 23. In this way, the first limiting piece 5 and the accommodating groove 23 are not prone to looseness, thereby achieving the limiting of the first limiting piece 5.

[0082] In some embodiments, the first limiting piece 5 can include a circlip 51. Since the circlip 51 can be elastically deformed radially, when the circlip 51 is installed in the accommodating groove 23, the outer diameter of the circlip 51 can be adjusted first so that the outer diameter of the circlip 51 is smaller than the inner diameter of the accommodating groove 23, thereby facilitating the installation of the circlip 51. After the circlip 51 is installed in the accommodating groove 23, the restriction on the outer diameter of the circlip 51 is removed, so that the circlip 51 abuts against the inner peripheral wall of the accommodating groove 23 under the action of the elastic restoring force. In this way, the circlip 51 can be clamped in the accommodating groove 23. Since the first limiting piece 5 is arranged at one end of the gear shaft 311 along the axial direction of the gear shaft 311, when the gear assembly 201 rotates, the circlip 51 can limit the gear shaft 311, thereby reducing the axial movement of the gear shaft 311 and ensuring the stability of the system.

[0083] In addition, since the circlip 51 has a simple structure and is easy to install, production personnel can quickly position and install it, thereby improving production efficiency.

[0084] In some embodiments, the material of the circlip 51 can be spring steel, stainless steel, or copper alloy, etc. For example, the circlip 51 can be made of spring steel, and the surface of the circlip 51 can be heat treated to improve the strength of the circlip 51 and reduce the possibility of damage to the circlip 51.

[0085] In some embodiments, the axial impact force that the circlip 51 can withstand can be greater than 4kN, so that when the gear shaft 311 moves axially, the circlip 51 can resist the axial impact force from the gear shaft 311, reducing the possibility of failure of the circlip 51, and thus reducing the probability of the impact force being applied to the lock plate 4. For example, the circlip 51 can be made of 60Si2MnA spring steel, and the surface can be carburized and quenched to make the hardness of the circlip 51 greater than or equal to 55HRC, so that the shear strength of the circlip 51 can be greater than or equal to 800MPa, and the axial impact force that the circlip 51 can withstand can be greater than or equal to 5kN.

[0086] Please refer to Figure 5 In some embodiments, the circlip 51 can include a ring-shaped body 511, and the ring-shaped body 511 is provided with a notch 512 that communicates the outer peripheral wall and the inner peripheral wall of the ring-shaped body 511.

[0087] Since the ring-shaped body 511 is provided with the notch 512 that communicates the outer peripheral wall and the inner peripheral wall of the ring-shaped body 511, the opening of the notch 512 can be adjusted to adjust the outer diameter of the circlip 51. Since the circlip 51 can elastically deform, the circlip 51 can be in abutment with the inner wall surface of the accommodating groove 23, thereby limiting the circlip 51.

[0088] In some embodiments, the first limiting piece 5 can be welded in the accommodating groove 23. In this way, the first limiting piece 5 can be fixedly connected with the accommodating groove 23. Since the end surface of the gear shaft 311 faces the first limiting piece 5, the first limiting piece 5 is fixedly connected with the accommodating groove 23, so that the gear shaft 311 is not easy to come out of the mounting hole 21, thereby isolating the gear shaft 311 from the lock plate 4, so that the lock plate 4 is not easy to be subjected to the axial force from the gear shaft 311, reducing the risk of damage.

[0089] In some embodiments, the first limiting piece 5 can also include a limiting ring, a limiting disc, or a limiting block, etc. By clamping or welding the first limiting piece 5 with the accommodating groove 23, the gear shaft 311 can be limited, reducing the axial movement of the gear shaft 311.

[0090] When the vehicle 1000 is in extreme working conditions, such as sudden acceleration, sudden braking, or the vehicle 1000 is jolted, the axial force of the gear shaft 311 is too large, which can cause the first limiting piece 5 to be damaged, so that the gear shaft 311 abuts against the first limiting piece 5, the first limiting piece 5 abuts against the locking piece 4, so that the locking piece 4 is subjected to the axial force.

[0091] In order to reduce the damage of the axial force to the locking piece 4, in some embodiments, the locking piece 4 can be heat treated to improve the strength of the locking piece 4, thereby improving the shearing capacity of the locking piece 4, reducing the possibility of the locking piece 4 being sheared due to the impact force of the gear shaft 311, and reducing the damage of the gear caused by the fragments of the locking piece 4.

[0092] Please refer to Figure 2 , Figure 3 and Figure 4 , in some embodiments, the projection of the first limiting piece 5 along the axial direction of the gear shaft 311 coincides with the projection of the locking piece 4. In this way, when the first limiting piece 5 is pushed out by the gear shaft 311, the first limiting piece 5 can abut against the locking piece 4, which can prevent the first limiting piece 5 from falling and being stuck in the gear assembly 3. In addition, the first limiting piece 5 can abut against the locking piece 4, and since the first limiting piece 5 has a certain strength, it can resist part of the axial force applied by the gear shaft 311, thereby reducing the damage to the locking piece 4.

[0093] Please refer to Figure 3 , Figure 4 and Figure 5 , in some embodiments, the gear assembly 201 can further include a connecting bolt 6, and the locking piece 4 is provided with a connecting hole, and the connecting bolt 6 is fixedly connected with the planet carrier 2 through the connecting hole.

[0094] In this way, the connection strength between the locking piece 4 and the planet carrier 2 can be enhanced, and the locking piece 4 can be prevented from being pushed out when subjected to the axial force, so that the gear shaft 311 is prevented from being pulled out of the mounting hole 21 of the planet carrier 2.

[0095] In some embodiments, the connecting bolt 6 can include a first bolt and a second bolt, and the first bolt and the second bolt are respectively arranged on both sides of the gear shaft 311. In this way, the connection strength between the locking piece 4 around the gear shaft 311 and the planet carrier 2 can be further enhanced, and the possibility of the gear shaft 311 being pulled out of the mounting hole 21 of the planet carrier 2 can be reduced.

[0096] In some embodiments, the gear shaft 311 can be tightly fitted, such as interference fitted, with the mounting hole 21 of the planet carrier 2. In this way, the looseness between the gear shaft 311 and the planet carrier 2 can be reduced, so that the axial movement of the gear shaft 311 is reduced, and the possibility of damage to the locking piece 4 is reduced.

[0097] In some embodiments, the gear shaft 311 can be welded with the planet carrier 2, so that the gear shaft 311 is fixedly connected with the planet carrier 2, thereby preventing the gear shaft 311 from moving relative to the planet carrier 2 and reducing the possibility of damage to the locking piece 4.

[0098] Please refer to Figures 3 to 5 In some embodiments of the present application, the gear assembly 201 can further include a second limiting member 7, which is arranged between the planet carrier 2 and the gear shaft 311 in the radial direction of the gear shaft 311, and is adapted to limit the relative rotation between the planet carrier 2 and the gear shaft 311.

[0099] Since the planet carrier 2 is connected with the gear shaft 311, the gear shaft 311 can drive the planet carrier 2 to rotate by rotating around the sun gear 321. If the gear shaft 311 and the planet carrier 2 rotate relative to each other, the transmission efficiency between the gear shaft 311 and the planet carrier 2 will be reduced, which is not conducive to energy saving and efficiency improvement of the vehicle 1000. Therefore, the second limiting member 7 is arranged between the planet carrier 2 and the gear shaft 311 in the radial direction of the gear shaft 311, which can limit the relative rotation between the planet carrier 2 and the gear shaft 311, so that the planet carrier 2 and the gear shaft 311 can rotate synchronously, and the power of the drive system can be efficiently transmitted to the planet carrier 2.

[0100] In some embodiments, the circumferential wall surface of the gear shaft 311 can be provided with a first limiting groove 3111, and the planet carrier 2 can be provided with a second limiting groove 24 arranged opposite to the first limiting groove 3111. At least part of the second limiting member 7 is arranged in the first limiting groove 3111 and at least part of the second limiting member 7 is arranged in the second limiting groove 24.

[0101] Since at least part of the second limiting member 7 is arranged in the first limiting groove 3111 and at least part of the second limiting member 7 is arranged in the second limiting groove 24, under the action of the second limiting member 7, the gear shaft 311 and the planet carrier 2 will not rotate relative to each other, thereby improving the transmission efficiency between the gear shaft 311 and the planet carrier 2.

[0102] In addition, the second limiting member 7 can limit the relative position of the first limiting groove 3111 and the second limiting groove 24, thereby reducing the transmission error between the gear shaft 311 and the planet carrier 2 and improving the stability and reliability of the transmission of the entire gear assembly 201.

[0103] Please refer to Figure 5 In some embodiments, the second limiting member 7 can include a limiting pin 71, which is arranged in the first limiting groove 3111 and the second limiting groove 24 by the limiting pin 71, so as to ensure the relative position between the planet carrier 2 and the gear shaft 311 and reduce the deviation of the planet carrier 2 and the gear shaft 311 during movement. The structure of the limiting member is simple, easy to manufacture and install, and can save production and processing costs.

[0104] Please refer to Figure 6 In other embodiments, the second limiting member 7 can also include a limiting ball 72. Since the surface of the limiting ball 72 is smooth, the friction and wear between the limiting ball 72 and the first limiting groove 3111 and the second limiting groove 24 can be reduced during movement, which helps to prolong the service life of the second limiting member 7, thereby improving the stability and reliability of the system.

[0105] Please refer to Figures 2 to 6 In some embodiments, the planetary gear 313 can include a first planetary gear 313, a second planetary gear 313, and a third planetary gear 313, which are arranged around the sun gear 321 and are in meshing transmission with the sun gear 321. In this way, when the sun gear 321 rotates, the first planetary gear 313, the second planetary gear 313, and the third planetary gear 313 can rotate around the sun gear 321, and the first planetary gear 313, the second planetary gear 313, and the third planetary gear 313 can rotate around their own axes, respectively, so that the transmission process can be more stable and the transmission efficiency can be higher.

[0106] The gear shaft 311 can also include a first gear shaft, a second gear shaft, and a third gear shaft, the first gear shaft cooperating with the first planetary gear 313, the second gear shaft cooperating with the second planetary gear 313, and the third gear shaft cooperating with the third planetary gear 313, so that the power of the planetary gear 313 is transmitted to the gear shaft 311.

[0107] The first gear shaft, the second gear shaft, and the third gear shaft are all connected with the planet carrier 2. Since the first gear shaft, the second gear shaft, and the third gear shaft can rotate around the sun gear 321, the planet carrier 2 can be driven to rotate.

[0108] The mounting hole 21 can include a first mounting hole 21, a second mounting hole 21, and a third mounting hole 21, so that the first gear shaft, the second gear shaft, and the third gear shaft are mounted on the planet carrier 2.

[0109] In some embodiments, the structure of the first gear shaft, the second gear shaft, and the third gear shaft is consistent with the structure of the above-mentioned gear shaft 311. The first gear shaft, the second gear shaft, and the third gear shaft are all provided with the first limiting member 5 between the first gear shaft, the second gear shaft, and the third gear shaft and the lock plate 4, so as to limit the axial displacement of the first gear shaft, the second gear shaft, and the third gear shaft.

[0110] In some embodiments, the connecting bolt 6 can further include a third bolt, a fourth bolt, a fifth bolt and a sixth bolt, the first bolt and the second bolt can be arranged on both sides of the first gear shaft, the third bolt and the fourth bolt can be arranged on both sides of the second gear shaft, and the fifth bolt and the sixth bolt can be arranged on both sides of the third gear shaft, so that the connection strength between the locking plates 4 around the first gear shaft, the second gear shaft and the third gear shaft and the planet carrier 2 can be enhanced, and the possibility of the gear shaft 311 being pulled out of the mounting hole 21 of the planet carrier 2 can be reduced.

[0111] In some embodiments, the gear assembly 201 further includes a housing 8, at least part of the planetary gear assembly 31, at least part of the sun gear assembly 32 and at least part of the planet carrier 2 are arranged in the housing 8. In this way, the housing 8 can support and protect the gear assembly 201, prevent foreign matter from entering the gear assembly 201 and causing damage to the gears, and affect the transmission accuracy and service life of the gear assembly 201.

[0112] In some embodiments, the housing 8 is provided with a ring gear, the first planetary gear 313, the second planetary gear 313 and the third planetary gear 313 are engaged with the ring gear, and the first planetary gear 313, the second planetary gear 313 and the third planetary gear 313 are arranged between the sun gear 321 and the ring gear.

[0113] In this way, the first planetary gear 313, the second planetary gear 313 and the third planetary gear 313 are engaged with the sun gear 321 on one side close to the axis 311 of the sun gear 321, and are engaged with the sun gear 321 on the other side away from the axis 311 of the sun gear 321, so that the transmission of the first planetary gear 313, the second planetary gear 313 and the third planetary gear 313 can be more stable.

[0114] In some embodiments, the housing 8 can be fixedly connected with the drive axle of the vehicle 1000, so that the housing 8 remains fixed relative to the vehicle body and does not rotate with the first planetary gear 313, the second planetary gear 313 and the third planetary gear 313, so that the first planetary gear 313, the second planetary gear 313 and the third planetary gear 313 can rotate around the sun gear 321 and also rotate around their own axes, so that the transmission ratio between the sun gear 321 and the planet carrier 2 can be adjusted to make the transmission more accurate.

[0115] In some embodiments, the gear assembly 201 can further comprise a connecting bearing 9 connected between the planet carrier 2 and the housing 8. In this way, the housing 8 can support the planet carrier 2, so that the planet carrier 2 can be more stably installed. The connecting bearing 9 connected between the planet carrier 2 and the housing 8 can enable the planet carrier 2 to rotate relative to the housing 8, and the connecting bearing 9 can make the rotation of the planet carrier 2 more smooth.

[0116] For example, the connecting bearing 9 can be a tapered roller bearing, a cylindrical roller bearing, a deep groove ball bearing, or a self-aligning ball bearing, etc.

[0117] In some embodiments, the gear assembly 201 can further comprise a round nut 10, which can be sleeved on the planet carrier 2 and connected to one end of the connecting bearing 9 in the axial direction of the connecting bearing 9. The round nut 10 can provide axial positioning for the connecting bearing 9, preventing the connecting bearing 9 from being pulled out of the planet carrier 2.

[0118] In some embodiments, the locking piece 4 can be connected to the end of the round nut 10 away from the connecting bearing 9. Since the locking piece 4 is fixedly connected to the luggage rack, the round nut 10 can be prevented from being pulled out of the planet carrier 2.

[0119] In some embodiments, the locking piece 4 can be provided with a bent portion 41, and the outer periphery of the round nut 10 can be provided with a tooth groove. The bent portion 41 can be engaged with the tooth groove to limit the rotation of the round nut 10 relative to the planet carrier 2. In this way, the relative rotation between the round nut 10 and the planet carrier 2 can be prevented, so that the vibration and noise of the gear assembly 201 during operation can be reduced.

[0120] In the description of the present specification, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0121] The above is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A gear assembly, characterized by, The gear assembly (3) comprises a gear shaft (311) connected to the planet carrier (2); the first limiting piece (5) is arranged at one end of the gear shaft (311) in the axial direction of the gear shaft (311) and is connected to the planet carrier (2).

2. The gear assembly of claim 1, wherein, The planet carrier (2) is provided with a mounting hole (21), and at least part of the gear shaft (311) is arranged in the mounting hole (21). The planet carrier (2) is further provided with a containing groove (23) in communication with the mounting hole (21), the first limiting piece (5) is arranged in the containing groove (23), and the end face of the gear shaft (311) is arranged towards the first limiting piece (5).

3. The gear assembly of claim 2, wherein, The first limiting piece (5) is clamped in the containing groove (23).

4. The gear assembly of claim 3, wherein, The outer diameter of the first limiting piece (5) is adjustably arranged, and the outer peripheral wall of the first limiting piece (5) can abut against the inner peripheral wall of the containing groove (23).

5. The gear assembly of claim 4, wherein, The first limiting piece (5) comprises a clamping spring (51).

6. The gear assembly of claim 5, wherein, The clamping spring (51) comprises a ring-shaped body (511) provided with a notch (512) in communication with the outer peripheral wall and the inner peripheral wall of the ring-shaped body (511).

7. The gear assembly of claim 2, wherein, The first limiting piece (5) is welded in the containing groove (23).

8. The gear assembly of claim 1, wherein, Further comprising a second limiting piece (7) arranged between the planet carrier (2) and the gear shaft (311) in the radial direction of the gear shaft (311), and the second limiting piece (7) is adapted to limit the relative rotation between the planet carrier (2) and the gear shaft (311).

9. The gear assembly of claim 8, wherein, The circumferential wall surface of the gear shaft (311) is provided with a first limiting groove (3111), and the planet carrier (2) is provided with a second limiting groove (24) arranged opposite to the first limiting groove (3111), at least part of the second limiting piece (7) is arranged in the first limiting groove (3111) and at least part of the second limiting piece (7) is arranged in the second limiting groove (24).

10. The gear assembly of claim 9, wherein, The second limiting piece (7) comprises a limiting pin (71) or a limiting ball (72).

11. The gear assembly of claim 1, wherein, Further comprising a locking piece (4) fixedly connected to the planet carrier (2) and arranged at one end of the first limiting piece (5) away from the gear shaft (311).

12. The gear assembly of claim 11, wherein, The projection of the first limiting piece (5) coincides with the projection of the locking piece (4) in the axial direction of the gear shaft (311).

13. The gear assembly of claim 12, wherein, Further comprising a connecting bolt (6), the locking piece (4) is provided with a connecting hole, and the connecting bolt (6) is fixedly connected to the planet carrier (2) through the connecting hole.

14. The gear assembly of claim 13, wherein, The connecting bolt (6) comprises a first bolt and a second bolt arranged on both sides of the gear shaft (311) respectively.

15. A wheel hub assembly characterized by, The gear assembly (201) of any one of claims 1-14.

16. A vehicle characterized by comprising: including the gear assembly (201) of any one of claims 1-14 or the hub assembly of claim 15.

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