Rear wheel drive assembly and vehicle

Abstract

The application relates to the technical field of vehicles, and provides a rear-wheel drive assembly and a vehicle, which can solve the problem of space occupation of a steering mechanism. The rear-wheel drive assembly comprises a subframe, a power mechanism and a steering mechanism, the subframe is used for mounting rear wheels of the vehicle; the power mechanism is connected to the subframe, and the power mechanism is used for driving the rear wheels to rotate; the steering mechanism is connected to the subframe, and the steering mechanism is used for driving the rear wheels to steer; along the advancing direction of the vehicle, the steering mechanism is located on the front side of the power mechanism, and along the height direction of the vehicle, the highest point of the steering mechanism does not exceed the highest point of the power mechanism.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a rear-wheel drive assembly and vehicle. Background Technology

[0002] Vehicles are machines powered by fuel, electricity, etc., used to carry people or goods. As vehicle functions increase, the addition of a rear-wheel steering system can optimize the vehicle's passability.

[0003] In related technologies, the rear-wheel steering system encroaches on the passenger space inside the vehicle, making it difficult to meet the needs of vehicle ride comfort. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides a rear-wheel drive assembly and vehicle that can reduce the intrusion of the steering mechanism into the vehicle's interior space and increase passenger space.

[0005] In a first aspect, this application provides a rear-wheel drive assembly, including a subframe, a power mechanism, and a steering mechanism. The subframe is used to mount the rear wheels of the vehicle; the power mechanism is connected to the subframe and is used to drive the rear wheels to rotate; the steering mechanism is connected to the subframe and is used to drive the rear wheels to steer; along the vehicle's forward direction, the steering mechanism is located in front of the power mechanism, and along the vehicle's height direction, the highest point of the steering mechanism does not exceed the highest point of the power mechanism.

[0006] The rear-wheel drive assembly provided in this application has a subframe that provides a mounting base for the rear wheels, powertrain, and steering mechanism. The powertrain drives the rear wheels to rotate, thus moving the vehicle. The steering mechanism drives the rear wheels to steer, enabling rear-wheel steering. Furthermore, the steering mechanism is located in front of the powertrain along the vehicle's forward direction to optimize the space in front of the powertrain, resulting in a more compact rear-wheel drive assembly. The highest point of the steering mechanism does not exceed the highest point of the powertrain along the vehicle's height, limiting the steering mechanism's height and creating a flatter upper surface for the rear-wheel drive assembly, minimizing encroachment on interior space and optimizing usable interior space. Compared to related technologies where the steering mechanism encroaches on significant interior space, the rear-wheel drive assembly of this application, through optimized layout of the steering and powertrain mechanisms, achieves a more compact and regular overall structure, reducing encroachment on interior space.

[0007] In some implementations, the rear-wheel drive assembly also includes a suspension structure, with the power unit connected to the subframe via the suspension structure, and the steering mechanism and suspension structure arranged sequentially along the height of the vehicle.

[0008] In some implementations, the steering mechanism includes a steering drive and a first link, which is driveably connected between the steering drive and the rear wheel. The steering drive is located above the first link along the height of the vehicle.

[0009] In some implementations, the first member includes a rod body and at least two connecting parts, the connecting parts being connected to the subframe, and at least one connecting part being located at the middle of the rod body along the axial direction.

[0010] In some implementations, the first member further includes a support portion, which is correspondingly provided with a connecting portion, and the connecting portion is connected to the end of the corresponding support portion away from the member.

[0011] In some implementations, the steering mechanism further includes a reinforcing protrusion disposed on the surface of the steering drive member and / or the first linkage member, and the extending direction of the reinforcing protrusion forms an angle with the extending direction of the surface.

[0012] In some implementations, the steering mechanism further includes a second link disposed between the first link and the corresponding rear wheel; the second link includes a first connecting segment and a second connecting segment, the first connecting segment connecting the first link, and the second connecting segment rotatably connecting the first connecting segment and the corresponding rear wheel, respectively, and the second connecting segment being able to rotate along its axis to adjust the size of the second link.

[0013] In some implementations, the second member also includes a locking element connected to the first connecting segment, which is used to unlock or lock the rotation of the second connecting segment relative to the first connecting segment.

[0014] In some implementations, the steering mechanism further includes wiring harnesses and / or conduits; the steering mechanism includes a limiting part for securing the wiring harnesses or conduits, and the limiting part is arranged along the height direction of the vehicle.

[0015] Secondly, this application provides a vehicle including a main frame, a middle row seat, and a rear-wheel drive assembly according to an embodiment of this application. A subframe is connected to the main frame, and an accommodating space is formed between the middle row seat and the steering mechanism. The accommodating space is used for adjusting the position of the middle row seat relative to the main frame.

[0016] In the vehicle of this application, by optimizing the layout of the steering mechanism and the power mechanism, the overall structure of the rear-wheel drive assembly is made more compact and regular, reducing the encroachment on the interior space. A large space is left between the steering mechanism and the middle row seats to facilitate the adjustment of the middle row seats and to make it easier for rear seat passengers to put their feet down, so as to maximize the passenger space. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0018] 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, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the vehicle structure according to an embodiment of this application; Figure 2 This is a partial structural diagram of the rear-wheel drive assembly according to an embodiment of this application; Figure 3 This is a schematic diagram of the steering mechanism and position mechanism in the rear-wheel drive assembly according to an embodiment of this application; Figure 4 This is a structural schematic diagram of the rear-wheel drive assembly and the middle row seat in a vehicle according to an embodiment of this application; Figure 5 This is a structural schematic diagram of the steering mechanism in the rear-wheel drive assembly of this application from a first-view perspective; Figure 6 This is a structural schematic diagram of the steering mechanism in the rear-wheel drive assembly of this application from a second-view perspective. Figure 7 This is a schematic diagram of the structure of the second linkage in the rear-wheel drive assembly according to an embodiment of this application.

[0020] Explanation of reference numerals in the attached figures: 100 - Subframe; 200 - Power mechanism; 300 - Steering mechanism; 310 - Steering drive component; 320 - First linkage; 321 - Link body; 322 - Connecting part; 323 - Support part; 324 - Tie rod fork; 330 - Reinforcing protrusion; 340 - Second linkage; 341 - First connecting section; 342 - Second connecting section; 343 - Locking component; 344 - Dustproof cover; 345 - Connecting axle head; 350 - Limiting part; 360 - Lifting structure; 370 - Controller; 400 - Suspension structure; 500 - Middle row seat; 510 - Slide rail mechanism; 520 - Wiring harness box; 600 - Rear wheel; 700 - Floor; 800 - Accommodation space; X - Forward direction; Z - Height direction. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0024] In the description of the embodiments of this application, technical terms such as "first," "second," and "third" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0025] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0027] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0028] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0029] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0030] The following is a detailed description of this application.

[0031] This application provides a vehicle, which is a machine powered by fuel, electricity, or the like, used to transport people or goods. The vehicle can be a sedan, SUV, sport utility vehicle (SUV), multi-purpose vehicle (MPV), truck, bus, public transport, etc. The vehicle can refer to a fuel-powered vehicle, an electric vehicle, or a hybrid vehicle.

[0032] As vehicle functionality increases, models with wheelbases exceeding 3 meters are constantly emerging. However, a longer wheelbase increases the turning diameter and reduces a vehicle's handling performance. Installing a rear-wheel steering system can optimize this performance. Depending on the rear suspension structure, vehicle positioning, and seating layout, the layout and structure of the rear-wheel steering system vary. In some technical solutions, the rear-wheel steering system encroaches on interior passenger space, making it difficult to meet the demands for passenger comfort.

[0033] Therefore, embodiments of this application also provide a rear-wheel drive assembly, referring to... Figure 1 , Figure 2 and Figure 3The rear-wheel drive assembly includes a subframe 100, a power unit 200, and a steering mechanism 300. The subframe 100 is used to mount the rear wheels 600 of the vehicle. The power unit 200 is connected to the subframe 100 and is used to drive the rear wheels 600 to rotate. The steering mechanism 300 is connected to the subframe 100 and is used to drive the rear wheels 600 to steer. Along the vehicle's forward direction X, the steering mechanism 300 is located in front of the power unit 200, and along the vehicle's height direction Z, the highest point of the steering mechanism 300 does not exceed the highest point of the power unit 200.

[0034] In some examples, the subframe 100 is connected to the main frame and is located between the two rear wheels 600. The subframe 100 is used to set up structures such as suspension to improve the vehicle's vibration damping performance.

[0035] In some examples, the power mechanism 200 is used to drive the rear wheels 600 to rotate, so as to move the vehicle by rotating the rear wheels 600. The power mechanism 200 may include structures such as a power motor and a reducer. The steering mechanism 300 is used to drive the rear wheels 600 to steer, that is, to change the orientation of the rear wheels 600, so as to realize the rear wheel steering function of the vehicle.

[0036] In some examples, the steering mechanism 300 is located in front of the power mechanism 200, meaning that the minimum distance between the steering mechanism 300 and the front of the vehicle (e.g., the front bumper) is less than the minimum distance between the power mechanism 200 and the front of the vehicle.

[0037] In some examples, the vehicle is located on a bearing surface (e.g., a road surface), and the highest point of the steering mechanism 300 refers to the point where the steering mechanism 300 is at its maximum vertical distance from the bearing surface; the highest point of the power mechanism 200 refers to the point where the power mechanism 200 is at its maximum vertical distance from the bearing surface.

[0038] In some examples, the vehicle's height direction Z is vertical, the vehicle's forward direction X or reverse direction is horizontal, the highest point of the steering mechanism 300 has a first distance from the bearing surface in the vertical direction, and the highest point of the power mechanism 200 has a second distance from the bearing surface in the vertical direction, the first distance being less than or equal to the second distance.

[0039] The technical solution provided in this application embodiment provides a mounting base for the rear wheel 600, the power mechanism 200, and the steering mechanism 300. The power mechanism 200 is used to drive the rear wheel 600 to rotate so as to drive the vehicle to move; the steering mechanism 300 is used to drive the rear wheel 600 to steer so as to realize the rear wheel steering function of the vehicle.

[0040] Based on this, along the vehicle's forward direction X, the steering mechanism 300 is located in front of the power unit 200, so as to make reasonable use of the space in front of the power unit 200, making the structure of the rear-wheel drive assembly more compact. And along the vehicle's height direction Z, the highest point of the steering mechanism 300 does not exceed the highest point of the power unit 200, limiting the highest point of the steering mechanism 300 so that the upper side of the rear-wheel drive assembly is flatter, reducing the encroachment on the interior space, and optimizing the available space inside the vehicle.

[0041] Compared with related technologies where the steering mechanism 300 occupies a lot of interior space, the rear-wheel drive assembly of this application optimizes the layout of the steering mechanism 300 and the power mechanism 200, making the overall structure of the rear-wheel drive assembly more compact and regular, and reducing the encroachment on the interior space.

[0042] Reference Figure 3 and Figure 4 In some embodiments of this application, the rear-wheel drive assembly further includes a suspension structure 400, the power unit 200 is connected to the subframe 100 through the suspension structure 400, and the steering mechanism 300 and the suspension structure 400 are arranged sequentially along the height direction Z of the vehicle.

[0043] In some examples, along the vehicle's height direction Z, the steering mechanism 300 is located above the suspension structure 400; in other words, the steering mechanism 300 and the suspension structure 400 are arranged sequentially from top to bottom.

[0044] In some examples, along the vehicle's height direction Z, the geometric center of the steering mechanism 300 is higher than the highest point of the suspension structure 400.

[0045] In some examples, the assembled structure of the powertrain 200, steering mechanism 300, and suspension structure 400 has an approximate rectangular outline, making the structure more regular and compact. For instance, the vehicle includes a floor 700 located above the steering mechanism 300 and powertrain 200, and the flat rear-wheel drive assembly makes the floor 700 even flatter.

[0046] The technical solution provided in this application embodiment arranges the steering mechanism 300 and the suspension structure 400 sequentially along the height direction Z of the vehicle, so as to reduce the size of the rear-wheel drive assembly in the vehicle's forward direction X, so as to have more usable interior space in the vehicle's forward direction X.

[0047] Reference Figure 2 In some embodiments of this application, the steering mechanism 300 includes a steering drive member 310 and a first link 320. The first link 320 is tractively connected between the steering drive member 310 and the rear wheel 600. Along the height direction Z of the vehicle, the steering drive member 310 is located above the first link 320.

[0048] In some examples, the steering mechanism 300 is integrated, with the steering drive 310 and the first linkage 320 integrated into one unit; in other examples, the first linkage 320 is detachably connected to the output shaft of the steering drive 310.

[0049] In some examples, the steering drive component 310 and the first linkage 320 are arranged sequentially along the height direction Z of the vehicle body, that is, the steering drive component 310 is arranged vertically to reduce the space occupied by the steering mechanism 300 in the vehicle's forward direction X. For example, for MPV models, this can reduce the space occupied by the middle row seat 500 adjustment space and the rear seat legroom, so that the middle row seat 500 has a larger fore-and-aft sliding range, and also makes the rear seat legroom larger, keeping the distance between the middle row seat 500 and the rear seats within a comfortable range.

[0050] It should be noted that the steering drive component 310 can be, but is not limited to, a motor, a hydraulic cylinder, a pneumatic cylinder, or an electric telescopic rod. For example, the steering drive component 310 is a motor.

[0051] In some examples, the steering mechanism 300 also includes a controller 370 electrically connected to the vehicle's on-board terminal. The controller 370 is used to control the steering drive 310 to output steering driving force. The controller 370 is connected to the steering drive 310.

[0052] In some examples, the steering drive 310 being located above the first link 320 means that, along the height direction Z of the vehicle, the geometric center of the steering drive 310 is located above the geometric center of the first link 320, or the highest point of the steering drive 310 is higher than the highest point of the first link 320.

[0053] In the technical solution provided in this application embodiment, the first link 320 is connected to the rear wheel 600, so it needs to extend to both sides of the vehicle in the width direction. The steering drive 310 is smaller in size in the width direction of the vehicle. By setting the steering drive 310 on the upper side of the first link 320, it helps to provide more usable interior space in the width direction of the vehicle.

[0054] Reference Figure 5 and Figure 6 In some embodiments of this application, the first rod 320 includes a rod body 321 and at least two connecting portions 322, the connecting portions 322 being connected to the subframe 100, and at least one connecting portion 322 being located at the middle of the rod body 321 along the axial direction.

[0055] In some examples, the rod 321 is a hollow or solid rod structure, and the embodiments of this application do not limit the structure of the rod 321.

[0056] In some examples, the rod 321 includes a rod portion and a shell portion sleeved on the outer periphery of the rod portion, the shell portion having an opening along the axial direction, the shell portion providing protection for the rod portion.

[0057] In some examples, a connecting portion 322 is provided at one end of the rod 321 along its axis; in other examples, a connecting portion 322 is provided at both ends of the rod 321 along its axis.

[0058] In some examples, the steering drive 310 is offset relative to the rod 321 along the axial direction. The rod 321 can be divided into a middle section and two end sections along the axial direction. The middle section is located between the two end sections. The steering drive 310 is located in one of the end sections. Along the axial direction of the rod 321, the steering drive 310 has a first end near the middle section and a second end away from the middle section. In other examples, the steering drive 310 is connected to the middle of the rod 321.

[0059] In some examples, the weight of the steering drive 310 is greater than the weight of the first link 320. Due to the offset of the steering drive 310, more connecting parts 322 need to be provided near the steering drive 310. The end segment with the steering drive 310 is provided with a first number of connecting parts 322, and the end segment without the steering drive 310 is provided with a second number of connecting parts 322. The first number is greater than the second number.

[0060] For example, the first end of the steering drive 310 is provided with a connecting part 322, which is located in the middle section of the rod 321; the second end of the steering drive 310 is provided with two connecting parts 322, and the end section not connected to the steering drive 310 is provided with one connecting part 322. It should be noted that this application does not limit the number of connecting parts 322.

[0061] The technical solution provided in this application embodiment allows the connecting part 322 to stably connect the rod 321 and the subframe 100. By providing the connecting part 322 at the middle of the rod 321 along the axial direction, the middle of the rod 321 is effectively supported, reducing the possibility of the rod 321 bending due to external force, and improving the structural reliability of the first rod 320 and the working stability of the steering mechanism 300.

[0062] Reference Figure 5 and Figure 6 In some embodiments of this application, the first rod 320 further includes a support portion 323, which is correspondingly disposed with a connecting portion 322, and the connecting portion 322 is connected to the end of the corresponding support portion 323 away from the rod body 321.

[0063] In some examples, the support portion 323 is a plate-like structure, for example, the support portion 323 is a triangular plate structure, one side of which is connected to the connecting portion 322, and the apex of the opposite side is connected to the corresponding connecting portion 322; in other examples, the support portion 323 is a rod-like structure.

[0064] In some examples, the extension direction of the support 323 forms an acute, right, or obtuse angle with the axial direction of the rod 321; in other examples, the extension direction of the support 323 is arranged parallel to the axial direction of the rod 321.

[0065] It should be noted that the extension directions of different support portions 323 may be the same or different. In some examples, the two connecting portions 322 located at the second end extend along the first direction and the second direction respectively, the connecting portion 322 located in the middle section extends along the second direction, and the connecting portion 322 located at the other end section extends along the first direction, wherein the first direction and the second direction are opposite directions.

[0066] The technical solution provided in this application embodiment provides a support portion 323 between the connecting portion 322 and the rod 321. The support portion 323 provides a solid support for the connecting portion 322 and allows the connecting portion 322 to be flexibly set at different positions on the rod 321 in order to adapt to the structure and installation requirements of the subframe 100 and improve the installation flexibility of the first rod 320.

[0067] Reference Figure 5 and Figure 6 In some embodiments of this application, the steering mechanism 300 further includes a reinforcing protrusion 330, which is disposed on the surface of the steering drive member 310 and / or the first rod member 320, and the extending direction of the reinforcing protrusion 330 has an angle with the extending direction of the surface.

[0068] In some examples, the reinforcing protrusion 330 is one or more of the following: reinforcing rib, reinforcing plate, reinforcing rod, and reinforcing spur.

[0069] In some examples, the support portion 323 is provided with a reinforcing protrusion 330. Both the support portion 323 and the reinforcing protrusion 330 thereon are plate-like structures, and the extending direction of the support portion 323 is perpendicular to the extending direction of the reinforcing protrusion 330.

[0070] In some examples, a reinforcing protrusion 330 is provided on the outer periphery of the rod 321. The reinforcing protrusion 330 is a reinforcing ring surrounding the central axis of the rod 321. The reinforcing ring can be a closed ring or an open ring. Specifically, the reinforcing protrusion 330 is located on the outer side of the shell of the rod 321.

[0071] The technical solution provided in this application embodiment is that the surface of the steering drive member 310 and / or the first rod member 320 is provided with a reinforcing protrusion 330, and the extension direction of the reinforcing protrusion 330 has an angle with the extension direction of the surface on which it is located, so as to increase the structural strength of the steering drive member 310 or the first rod member 320.

[0072] Reference Figure 5 and Figure 6 In some embodiments of this application, the steering mechanism 300 further includes a lifting structure 360, which is disposed at the end of the steering drive member 310. The lifting structure 360 ​​is used to adapt to an external lifting mechanism so as to lift the steering mechanism 300.

[0073] In some examples, the end of the steering drive 310 is provided with a reinforcing protrusion 330, and the lifting structure 360 ​​is a lifting hole opened in the reinforcing protrusion 330, which is located at the second end of the steering drive 310.

[0074] Reference Figure 2 and Figure 7 In some embodiments of this application, the steering mechanism 300 further includes a second rod 340, which is disposed between the first rod 320 and the corresponding rear wheel 600. The second rod 340 includes a first connecting section 341 and a second connecting section 342. The first connecting section 341 is connected to the first rod 320, and the second connecting section 342 is rotatably connected to the first connecting section 341 and the corresponding rear wheel 600, respectively. The second connecting section 342 can rotate along its axis to adjust the size of the second rod 340.

[0075] In some examples, the first connecting segment 341 is hinged to the first rod 320. For example, a bearing is provided at the end of the first connecting segment 341 away from the second connecting segment 342, the axis of rotation of the bearing being perpendicular to the central axis of the first connecting segment 341, and a tie rod fork 324 is provided at the end of the first rod 320, with the bearing connected to the tie rod fork 324 of the first rod 320.

[0076] It should be noted that the first connecting segment 341 and the first rod 320 can also be connected by rotation, sliding or fixed means to meet different steering drive requirements.

[0077] In some examples, the rear wheel 600 is connected to the bogie, and the second connecting section 342 is rotatably connected to the bogie. For example, the second connecting section 342 includes two parts connected by a ball joint, one part forming a connecting shaft head 345 connected to the bogie, and the other part connecting to the first connecting section 341, so that the second connecting section 342 can drive the bogie movement more flexibly.

[0078] In some examples, the second member 340 also includes a dust cover 344, which is fitted around the outer periphery of the second connecting section 342 and located at the ball joint connection to provide protection for the ball joint structure therein. The dust cover 344 may be a corrugated pipe or similar structure.

[0079] In some examples, the first connecting segment 341 and the second connecting segment 342 are connected by threads. By rotating the second connecting segment 342, the second connecting segment 342 can be screwed into the first connecting segment 341 to reduce the axial dimension of the second rod 340, that is, to reduce the length of the second rod 340; or, the second connecting segment 342 can be screwed out of the first connecting segment 341 to increase the length of the second rod 340, so as to adapt to different positioning requirements of the rear wheel 600.

[0080] The technical solution provided in this application embodiment transmits the power output by the steering drive component 310 to the corresponding rear wheel 600 through the first link 320 and the second link 340, so as to drive the rear wheel 600 to turn. The second connecting section 342 is rotated and the length of the second link 340 is adjusted more conveniently by rotating the second connecting section 342, which facilitates the debugging and maintenance of the rear wheel drive assembly.

[0081] Reference Figure 7 In some embodiments of this application, the second rod 340 further includes a locking member 343, which is connected to the first connecting segment 341 and is used to unlock or lock the second connecting segment 342 relative to the first connecting segment 341 by rotation.

[0082] In some examples, the locking element 343 is an adjusting nut, which is sleeved on the end of the first connecting section 341 near the second connecting section 342 and is threadedly connected to the first connecting section 341. Tightening the adjusting nut locks the first connecting section 341 and the second connecting section 342; loosening the adjusting nut unlocks the first connecting section 341 and the second connecting section 342.

[0083] In other examples, the locking element 343 includes a structure such as a resilient snap or a resilient pin, and the second connecting section 342 is provided with a slot that mates with the resilient snap, or the second connecting section 342 is provided with a positioning hole that mates with the resilient pin.

[0084] It should be noted that the second connecting section 342 is rotatable, and only a single adjusting nut is needed to lock the first connecting section 341 and the second connecting section 342. Compared with the solution where the second connecting section 342 cannot be rotated and two adjusting nuts are needed, the locking component 343 structure of the technical solution of this application is simpler. In addition, only the locking state of a single locking component 343 needs to be adjusted, and the entire second connecting section 342 can be rotated under force, which increases the gripping range of the operator and makes the adjustment process more convenient.

[0085] The technical solution provided in this application embodiment, by setting a locking member 343, can lock the relative movement of the first connecting segment 341 and the second connecting segment 342, so that the second rod 340 can reliably transmit the power output by the steering drive member 310. When the locking member 343 unlocks the relative movement of the first connecting segment 341 and the second connecting segment 342, it is convenient to adjust the size of the second rod 340.

[0086] Reference Figure 5 and Figure 6 In some embodiments of this application, the steering mechanism 300 further includes a wiring harness and / or a conduit; the steering mechanism 300 includes a limiting portion 350 for fixing the wiring harness or conduit, and the limiting portion 350 is arranged along the height direction Z of the vehicle.

[0087] In some examples, the wiring harness includes a power supply harness for the steering drive 310, and / or a communication harness between the steering drive 310 and the on-board terminal, etc. The conduits are cooling conduits for the steering drive 310 or the power unit 200.

[0088] In some examples, the limiting part 350 is used to fix the wire harness; in other examples, the limiting part 350 is used to fix the conduit; and in still other examples, both the wire harness and the conduit are fixed by the limiting part 350.

[0089] In some examples, the limiting part 350 is provided on the outer wall of the steering drive member 310; in other examples, the limiting part 350 is provided on the outer wall of the first link member 320; and in still other examples, the limiting part 350 is provided on the outer walls of both the steering drive member 310 and the first link member 320.

[0090] In some examples, the limiting part 350 is a limiting slot with an opening, which can be set vertically upward or downward so that the wire harness or pipe can be vertically snapped into the limiting part 350 during installation, solving the problem of insufficient operating space due to obstruction by surrounding parts during assembly; in other examples, the limiting part 350 is a threaded hole so that the wire harness clip or pipe clip can be detachably connected.

[0091] The technical solution provided in this application embodiment can effectively fix the wire harness or pipe by setting the limiting part 350, which facilitates the arrangement of the wire harness or pipe. The limiting part 350 is set along the height direction Z of the vehicle to avoid other components of the rear wheel drive assembly, making it easier for operators to operate the limiting part 350 and improving the convenience of assembly and maintenance.

[0092] Reference Figure 1 and Figure 4 In some embodiments of this application, the vehicle includes a main frame, a middle row seat 500 and a rear-wheel drive assembly according to embodiments of this application. A subframe 100 is connected to the main frame. An accommodating space 800 is formed between the middle row seat 500 and the steering mechanism 300. The accommodating space 800 is used for adjusting the position of the middle row seat 500 relative to the main frame.

[0093] In some examples, the middle row seat 500 is connected to the main frame via a slide rail mechanism 510. The slide rail mechanism 510 can move the middle row seat 500 along the forward direction X or the reverse direction of the vehicle, thereby adjusting the position of the middle row seat 500. The accommodating space 800 serves as clearance space when adjusting the middle row seat 500.

[0094] In some examples, the middle row seat 500 also includes a wiring harness box 520 for storing the wiring harness required for the middle row seat 500, and the wiring harness box 520 is located within the accommodating space 800. In some examples, the vehicle includes rear seats positioned above the power unit 200, and the accommodating space 800 forms a legroom for rear seat passengers.

[0095] In some examples, the vehicle includes a floor 700, a subframe 100, a steering mechanism 300 and a powertrain 200 located below the floor 700, a space for accommodating wiring harnesses / ducts formed between the steering mechanism 300 and the floor 700, and middle row seats 500 and rear seats located above the floor 700.

[0096] The technical solution provided in this application optimizes the layout of the steering mechanism 300 and the power mechanism 200, making the overall structure of the rear-wheel drive assembly more compact and regular, reducing the encroachment on the interior space, and leaving a large accommodating space 800 between the steering mechanism 300 and the middle row seat 500, so as to allow for the adjustment of the position of the middle row seat 500 and facilitate the rear seat passengers to put their feet down, so as to maximize the maintenance of the seating space.

[0097] In the rear-wheel drive assembly and vehicle of this application embodiment, the steering mechanism 300 is positioned in front of the power mechanism 200, and the steering drive member 310 is located above the first link 320 to reduce the encroachment on the adjustment space of the middle row seat 500 and the foot space of the rear seat. The first link 320 of the steering mechanism 300 is fixed at four points, and a connecting part 322 is provided in the middle of the link 321 to improve structural stability and structural strength. The surfaces of the first link 320 and the steering drive member 310 are provided with reinforcing protrusions 330 to improve the structural strength of the steering mechanism 300. The first link 320 is provided with a limiting part 350 to fix the wiring harness and / or pipes, which facilitates the neat layout of the wiring harness and pipes. The second link 340 adopts a ball pin structure, which only requires a single locking member 343, reducing the layout space of the adjustment structure and making it easier to adjust the length of the second link 340.

[0098] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement 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 described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rear-wheel drive assembly, characterized in that, include: Subframe (100) for mounting the vehicle's rear wheels (600); A power mechanism (200) is connected to the subframe (100), and the power mechanism (200) is used to drive the rear wheel (600) to rotate; A steering mechanism (300) is connected to the subframe (100) and is used to drive the rear wheels (600) to steer. Along the vehicle's forward direction (X), the steering mechanism (300) is located in front of the power mechanism (200), and along the vehicle's height direction (Z), the highest point of the steering mechanism (300) does not exceed the highest point of the power mechanism (200).

2. The rear-wheel drive assembly according to claim 1, characterized in that, It also includes a suspension structure (400), the power unit (200) is connected to the subframe (100) through the suspension structure (400), and the steering mechanism (300) and the suspension structure (400) are arranged sequentially along the height direction (Z) of the vehicle.

3. The rear-wheel drive assembly according to claim 1 or 2, characterized in that, The steering mechanism (300) includes a steering drive (310) and a first link (320), the first link (320) being tractively connected between the steering drive (310) and the rear wheel (600) along the height direction (Z) of the vehicle, the steering drive (310) being located above the first link (320).

4. The rear-wheel drive assembly according to claim 3, characterized in that, The first rod (320) includes a rod body (321) and at least two connecting portions (322), the connecting portions (322) being connected to the subframe (100), and at least one of the connecting portions (322) being located at the middle of the rod body (321) along the axial direction.

5. The rear-wheel drive assembly according to claim 4, characterized in that, The first rod (320) further includes a support portion (323), which is correspondingly provided with the connecting portion (322), and the connecting portion (322) is connected to the end of the support portion (323) away from the rod body (321).

6. The rear-wheel drive assembly according to claim 3, characterized in that, The steering mechanism (300) further includes a reinforcing protrusion (330) disposed on the surface of the steering drive member (310) and / or the first rod member (320), and the extending direction of the reinforcing protrusion (330) forms an angle with the extending direction of the surface on which it is located.

7. The rear-wheel drive assembly according to claim 4, characterized in that, The steering mechanism (300) further includes a second link (340), which is disposed between the first link (320) and the corresponding rear wheel (600); The second rod (340) includes a first connecting section (341) and a second connecting section (342). The first connecting section (341) is connected to the first rod (320). The second connecting section (342) is rotatably connected to the first connecting section (341) and the corresponding rear wheel (600). The second connecting section (342) is rotatable along its axis to adjust the size of the second rod (340).

8. The rear-wheel drive assembly according to claim 7, characterized in that, The second rod (340) further includes a locking member (343), which is connected to the first connecting segment (341) and is used to unlock or lock the second connecting segment (342) relative to the first connecting segment (341) by rotation.

9. The rear-wheel drive assembly according to claim 1 or 2, characterized in that, The steering mechanism (300) further includes a wiring harness and / or a conduit; the steering mechanism (300) includes a limiting part (350) for fixing the wiring harness or the conduit, and the limiting part (350) is arranged along the height direction (Z) of the vehicle.

10. A vehicle, characterized in that, include: Main frame; The middle row seats (500) are movably connected to the main frame; The rear-wheel drive assembly according to any one of claims 1 to 9, wherein the subframe (100) is connected to the main frame, and an accommodating space (800) is formed between the middle row seat (500) and the steering mechanism (300), the accommodating space (800) being used for position adjustment of the middle row seat (500) relative to the main frame.

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