Vehicle

Abstract

The embodiment of the invention provides a vehicle. The vehicle comprises a front vehicle body assembly and a rear vehicle body assembly, the rear vehicle body assembly is in sliding connection with the front vehicle body assembly through a telescopic assembly; the telescopic assembly comprises an upper vehicle body telescopic assembly and a lower vehicle body telescopic assembly, one end of the upper vehicle body telescopic assembly is connected with an upper vehicle body of the front vehicle body assembly, and the other end of the upper vehicle body telescopic assembly is slidably connected with an upper vehicle body of the rear vehicle body assembly; one end of the lower vehicle body telescopic assembly is connected with a lower vehicle body of the front vehicle body assembly, and the other end of the lower vehicle body telescopic assembly is slidably connected with a lower vehicle body of the rear vehicle body assembly. The upper vehicle body telescopic assembly and the lower vehicle body telescopic assembly are controlled to work cooperatively, so that the rear vehicle body assembly has an initial position, and the rear vehicle body assembly has an unfolding position which moves away from one side of the front vehicle body assembly. The technical problem that in the prior art, a fixed-wheelbase vehicle cannot meet the requirements of diversified use scenes is solved.

Description

Technical Field

[0001] This application relates to the field of automotive structural technology, and more specifically, to a vehicle. Background Technology

[0002] The wheelbase of a vehicle is an important indicator of its performance and passenger space. Vehicles with different wheelbases differ significantly in driving handling, ride comfort, and cargo space. Currently, due to limitations imposed by product definition, engineering feasibility studies, and laws and regulations, the wheelbase of a vehicle cannot be changed after it leaves the factory. Therefore, vehicles with a fixed wheelbase may not be able to meet the diverse needs of customers in future usage scenarios.

[0003] There is currently no good solution to the above problems. Summary of the Invention

[0004] This application provides a vehicle to at least address the technical problem that fixed-wheelbase vehicles in the prior art cannot adapt to the needs of diverse usage scenarios.

[0005] According to one aspect of the embodiments of this application, a vehicle is provided, including: a front body assembly; a rear body assembly, the rear body assembly and the front body assembly being slidably connected via a telescopic assembly; the telescopic assembly includes an upper body telescopic component and a lower body telescopic component, one end of the upper body telescopic component being connected to the upper body of the front body assembly, and the other end of the upper body telescopic component being slidably connected to the upper body of the rear body assembly; one end of the lower body telescopic component being connected to the lower body of the front body assembly, and the other end of the lower body telescopic component being slidably connected to the lower body of the rear body assembly; wherein, by controlling the upper body telescopic component and the lower body telescopic component to work together, the rear body assembly is given an initial position and an deployed position that moves away from the front body assembly.

[0006] Furthermore, the lower body telescopic assembly also includes: a first slide rail, one end of which is connected to the front body assembly and extends toward the rear body assembly; a second slide rail, one end of which is slidably connected to the first slide rail and the other end of which is connected to the rear body assembly; wherein the connection between the first slide rail and the second slide rail forms an installation space.

[0007] Furthermore, the lower body telescopic assembly also includes: a telescopic structure located within the installation space, one end of which is connected to a first slide rail, and the other end of which is connected to a second slide rail. By driving the telescopic structure, the lower body of the rear vehicle assembly can be switched between an initial position and an extended position.

[0008] Furthermore, the telescopic structure includes: a telescopic rod assembly, one end of which is connected to a first slide rail, and the other end of which is connected to a second slide rail; and a hydraulic drive assembly, one end of which is connected to the first slide rail, and the other end of which is connected to the telescopic rod assembly, wherein the hydraulic drive assembly can drive the telescopic rod assembly to extend or retract along the direction of travel of the vehicle.

[0009] Furthermore, the telescopic structure also includes a ball assembly located at the connection between the first and second slide rails.

[0010] Furthermore, the ball assembly includes: a ball support, which is located between the first slide rail and the second slide rail, and is connected to the second slide rail; and balls, which are provided in multiples, and are evenly distributed along the connection section of the first slide rail and the second slide rail. Each ball is in contact with the second slide rail and the first slide rail, and the ball abuts against the side of the ball support away from the second slide rail.

[0011] Furthermore, the upper body telescopic assembly includes: a mounting bracket, which is located on the inner wall of the front body assembly, and two mounting brackets are provided, which are arranged opposite to each other along the width direction of the front body assembly; and a slide rail mechanism, which has two slide rails arranged opposite to each other, which are located on the side of the mounting bracket away from the front body assembly, and are connected to the mounting bracket, which extends along the length direction of the mounting bracket.

[0012] Furthermore, the upper body telescopic assembly also includes: a drive structure located on the side of the mounting bracket away from the front body assembly, with part of the drive structure located below the slide rail and the other part located on the outer sides of both ends of the slide rail; and a hinge structure located inside the slide rail, connected to the drive structure via steel wire, with both ends of the upper body of the rear body assembly connected to the hinge structures on the sides away from the slide rail; wherein, the drive structure drives the hinge structure to reciprocate along the extension path of the slide rail, causing the upper body of the rear body assembly to switch between the initial position and the deployed position.

[0013] Furthermore, the hinge structure includes: a guide wheel assembly, which includes a guide wheel bracket. The upper and lower sides of the guide wheel bracket are respectively provided with a first guide wheel and a second guide wheel. The first guide wheel is located near the top of the slide rail, and the second guide wheel is located near the bottom of the slide rail. A steel rope is connected to the first guide wheel or the second guide wheel, and the steel rope pulls the guide wheel assembly to reciprocate along the extension direction of the slide rail.

[0014] Furthermore, the drive structure includes: a first bracket; a second bracket, the first and second brackets being located at both ends of the slide rail; a motor, the motor being located below the slide rail and fixed on the mounting bracket, one end of a steel cable being connected to the output shaft of the motor, and the other end of the steel cable passing through the first bracket, the hinge structure, and the second bracket in sequence and being connected to the motor; wherein, by rotating the output shaft of the drive motor, the steel cable can pull the guide wheel assembly to move back and forth along the extension direction of the slide rail, thereby switching the upper body of the rear vehicle assembly between the initial position and the deployed position.

[0015] In this embodiment, a telescopic assembly is used to slide between the front body assembly and the rear body assembly. The upper body telescopic component and the lower body telescopic component are responsible for the telescopic movement of the upper and lower parts of the vehicle, respectively. Through precise coordination, the two components achieve the purpose of driving the rear body assembly to change between the initial position and the unfolded position away from the front body assembly, thereby realizing the technical effect of dynamic adjustment of the vehicle wheelbase and solving the technical problem that fixed wheelbase vehicles are difficult to adapt to diverse usage scenarios. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of an optional vehicle structure according to an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the structure of an optional vehicle upper body telescopic assembly according to an embodiment of this application;

[0019] Figure 3 This is a schematic diagram of the initial position of an optional vehicle underbody telescopic assembly according to an embodiment of this application;

[0020] Figure 4 It is based on Figure 3 A cross-sectional schematic diagram of AA, the telescopic component of the lower body;

[0021] Figure 5 This is a structural schematic diagram of an optional lower body telescopic assembly deployment position according to an embodiment of this application;

[0022] Figure 6 This is a schematic diagram of the initial position of an optional upper body telescopic assembly of a vehicle according to an embodiment of this application;

[0023] Figure 7 It is based on Figure 6 A cross-sectional schematic diagram of the BB of the upper body telescopic assembly in the middle;

[0024] Figure 8 It is based on Figure 6 A cross-sectional schematic diagram of the CC section of the upper body telescopic assembly in the middle;

[0025] Figure 9 This is a schematic diagram of the unfolded position of an optional upper body telescopic assembly of a vehicle according to an embodiment of this application.

[0026] The above-mentioned icon numbers are explained as follows:

[0027] 1. Front body assembly; 2. Rear body assembly;

[0028] 3. Telescopic assembly;

[0029] 31. Upper body telescopic assembly; 311. Mounting bracket; 312. Slide rail mechanism; 313. Drive structure; 3131. First bracket; 3132. Second bracket; 3133. Motor; 314. Hinge structure; 3141. First guide wheel; 3142. Second guide wheel; 3143. Guide wheel bracket;

[0030] 32. Lower body telescopic assembly; 321. First slide rail; 322. Second slide rail; 323. Hydraulic drive assembly; 324. Telescopic tie rod assembly;

[0031] 4. Front wheel assembly;

[0032] 5. Rear wheel assembly;

[0033] 7. Ball assembly; 71. Ball; 72. Ball support. Detailed Implementation

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0036] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0037] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0038] According to one aspect of the embodiments of this application, a vehicle is provided.

[0039] Specifically, such as Figure 1 , Figure 2 As shown, the vehicle includes: a front body assembly 1; a rear body assembly 2, the rear body assembly 2 and the front body assembly 1 being slidably connected via a telescopic assembly 3; the telescopic assembly 3 includes an upper body telescopic component 31 and a lower body telescopic component 32, one end of the upper body telescopic component 31 being connected to the upper body of the front body assembly 1, and the other end of the upper body telescopic component 31 being slidably connected to the upper body of the rear body assembly 2; one end of the lower body telescopic component 32 being connected to the lower body of the front body assembly 1, and the other end of the lower body telescopic component 32 being slidably connected to the lower body of the rear body assembly 2; wherein, by controlling the upper body telescopic component 31 and the lower body telescopic component 32 to work together, the rear body assembly 2 is given an initial position, and the rear body assembly 2 is given an unfolded position that moves away from the front body assembly 1.

[0040] In this embodiment, a telescopic assembly 3 is used to slide between the front body assembly 1 and the rear body assembly 2. The upper body telescopic component 31 and the lower body telescopic component 32 are responsible for the telescopic movement of the upper and lower parts of the vehicle, respectively. Through precise coordination, the two components drive the rear body assembly 2 to change between the initial position and the unfolded position away from the front body assembly, thereby achieving the technical effect of dynamic adjustment of the vehicle wheelbase and solving the technical problem that vehicles with fixed wheelbase are difficult to adapt to diverse usage scenarios.

[0041] Optionally, in this embodiment, the front body assembly 1 is a fixed part of the vehicle, including key areas such as the engine compartment, the driver and passenger seating area, and the front wheel assembly 4. The front body assembly 1 serves as the base of the vehicle, and its structure remains unchanged, providing a stable foundation for the telescopic function.

[0042] The rear body assembly 2 includes the trunk, rear seat area, rear wheel assembly 5, etc. Its telescopic capability provides the vehicle with flexibility in different usage scenarios. For example, when more luggage space is needed, the wheelbase can be extended, while when a smaller turning radius or easier parking is needed, the wheelbase can be shortened.

[0043] In this embodiment, the vehicle wheelbase is shortest when the rear body assembly 2 is in the initial position.

[0044] Specifically, the lower body telescopic assembly 32 further includes: a first slide rail 321, one end of which is connected to the front body assembly 1 and extends toward the rear body assembly 2; a second slide rail 322, one end of which is slidably connected to the first slide rail 321 and the other end of which is connected to the rear body assembly 2; wherein, the connection between the first slide rail 321 and the second slide rail 322 forms an installation space.

[0045] The first slide rail 321 is fixed at one end to the front body assembly 1, and is usually installed under the vehicle floor to ensure its stability and not affect the usable space of the passenger compartment. It extends towards the rear body assembly 2. The first slide rail 321 is designed to be stationary, providing a guide path for the second slide rail 322.

[0046] like Figure 3 As shown, one end of the second slide rail 322 is connected to the first slide rail 321 via a sliding mechanism, while the other end is fixed to the rear vehicle assembly 2. This design allows the second slide rail 322 to move along the guide path provided by the first slide rail 321, achieving X-axis extension and retraction. The second slide rail 322 is typically designed with grooves that match the balls or rollers to ensure smooth connection with the first slide rail 321. Furthermore, it may be equipped with guide blocks to prevent lateral displacement during sliding.

[0047] In this embodiment, the first slide rail 321 has a rectangular structure, the second slide rail 322 has a U-shaped structure, the two ends of the opening of the second slide rail 322 are movably connected to the first slide rail 321, and the opening of the second slide rail 322 is located between the first slide rails 321 to form an installation space.

[0048] Specifically, the lower body telescopic assembly 32 also includes a telescopic structure located in the installation space. One end of the telescopic structure is connected to the first slide rail 321, and the other end of the telescopic structure is connected to the second slide rail 322. By driving the telescopic structure, the lower body of the rear body assembly 2 can be switched between the initial position and the deployed position.

[0049] By driving the telescopic structure, the smooth transition of the lower body of the rear vehicle assembly 2 between its initial and extended positions can be precisely controlled. The core of this design lies in using the telescopic structure as a power transmission medium, enabling a dynamic connection between the first slide rail 321 and the second slide rail 322. This, in turn, causes the rear body to reciprocate along the vehicle's direction of travel, achieving flexible wheelbase adjustment. In practical applications, the telescopic structure not only enhances the mechanical strength and stability of the entire telescopic mechanism but also optimizes the smoothness and positioning accuracy during the telescopic process, ensuring vehicle safety and passenger comfort when changing wheelbase positions.

[0050] Specifically, such as Figure 3 , Figure 5 As shown, the telescopic structure includes: a telescopic rod assembly 324, one end of which is connected to a first slide rail 321, and the other end of which is connected to a second slide rail 322; and a hydraulic drive assembly 323, one end of which is connected to the first slide rail 321, and the other end of which is connected to the telescopic rod assembly 324. The hydraulic drive assembly 323 can drive the telescopic rod assembly 324 to extend or retract along the direction of travel of the vehicle.

[0051] The hydraulic drive assembly, serving as the power source for the telescopic structure, controls the extension and retraction of the telescopic rod assembly by adjusting the pressure of the internal fluid. When the hydraulic drive assembly increases the oil pressure, the telescopic rod gradually extends outward, causing the second slide rail 322 to move in the opposite direction to the front vehicle body assembly 1. This allows the retracted vehicle body to slide in the positive direction of the vehicle's travel, effectively extending the wheelbase. Conversely, reducing the oil pressure causes the telescopic rod assembly to retract, the second slide rail 322 to retract, and the vehicle to complete movement in the negative direction of travel, thus returning to the initial wheelbase state (i.e., the initial position). This adjustable wheelbase structure not only improves the vehicle's adaptability and operational convenience in different scenarios but also provides passengers with better riding comfort and space utilization flexibility.

[0052] The hydraulic drive assembly may integrate pressure sensors, valve control systems, and electronic controllers to ensure precise control of oil pressure. By communicating with the onboard computer system, it can receive commands and accurately determine when to extend or retract, as well as the degree of extension or retraction, thereby achieving intelligent adjustment of the vehicle's wheelbase.

[0053] The telescopic rod assembly 324 is typically made of high-strength metal and may contain threaded rods, telescopic tubes, or similar telescopic mechanisms to ensure sufficient structural stability and service life when subjected to the forces applied by the hydraulic drive assembly 323.

[0054] The two ends of the telescopic rod assembly 324 are connected to the first slide rail 321 and the second slide rail 322 respectively by hinges or other flexible connection methods. This connection method ensures the flexibility of the telescopic rod assembly 324 when it extends and retracts, and avoids structural damage that may be caused by rigid connection.

[0055] In other embodiments, the hydraulic drive assembly 323 can be replaced by an electric drive, further expanding the drive modes of the wheelbase adjustment mechanism and meeting different usage needs and scenarios.

[0056] Specifically, the telescopic structure also includes a ball assembly 7, which is located at the connection between the first slide rail 321 and the second slide rail 322.

[0057] The ball bearing assembly 7 is integrated at the connection between the first slide rail 321 and the second slide rail 322. This structural design significantly reduces the friction between the slide rails, thereby ensuring smoother extension and retraction of the telescopic vehicle body in the X direction. Through the cooperation of the balls and the ball cage, the ball bearing assembly 7 forms a low-friction rolling contact, effectively reducing energy consumption and noise during operation, and enhancing the service life and reliability of the telescopic mechanism. This improvement not only optimizes the dynamic response characteristics of the telescopic mechanism but also improves its positioning accuracy, ensuring that the overall performance of the vehicle and passenger comfort remain unaffected under different wheelbase conditions. Furthermore, the introduction of the ball bearing assembly 7 simplifies the maintenance process, making routine maintenance more convenient and efficient, further enhancing the user experience.

[0058] Specifically, such as Figure 4 As shown, the ball assembly 7 includes: a ball support 72, which is located between the first slide rail 321 and the second slide rail 322 and is connected to the second slide rail 322; and multiple balls 71, which are evenly distributed along the connecting section of the first slide rail 321 and the second slide rail 322. Each ball 71 is in contact with the second slide rail 322 and the first slide rail 321, and the ball 71 abuts against the side of the ball support 72 away from the second slide rail 322.

[0059] Supported by the ball bearing bracket 72, the ball bearing 71 rolls between the first slide rail 321 and the second slide rail 322, reducing direct contact between the inner and outer slide rails, lowering motion resistance, and making the telescopic mechanism move more smoothly and precisely. Furthermore, the combination of the ball bearing and the ball bearing bracket effectively distributes the load, extends the service life of the slide rail mechanism, and improves the reliability and durability of the entire telescopic vehicle structure. The addition of the ball bearing assembly not only optimizes the efficiency of the telescopic movement but also enhances the stability of the telescopic mechanism, enabling the vehicle to maintain good dynamic balance when changing wheelbase, thereby providing a better driving and riding experience.

[0060] The ball bearing bracket 72 is located between the first slide rail 321 and the second slide rail 322, and is fixed to the second slide rail 322 by an appropriate connection method, such as bolts, welding or special clamps.

[0061] In this embodiment, the ball bearing support 72 is internally designed with grooves or guide rails that match the diameter of the balls 71. These grooves ensure that the balls can roll stably along a set trajectory during the extension and retraction of the slide rail, while preventing the balls from deviating from the predetermined track. The ball bearing support 72 may also have a certain degree of rigidity to resist deformation during the extension and retraction process and maintain the integrity of the structure.

[0062] In the ball assembly 7, the balls 71 are designed to be evenly distributed along the connecting section of the first slide rail 321 and the second slide rail 322, and there are 4 balls. This ensures that the load is evenly distributed across the entire contact surface, avoiding excessive local friction or wear. The number and layout of the balls need to be carefully calculated to balance load-bearing capacity and rolling efficiency.

[0063] When the telescopic rod assembly 324 is powered by the hydraulic drive assembly 323 and begins to extend or retract along the vehicle's direction of travel, the balls 71, guided by the ball bearing bracket 72, roll on the contact surfaces of the first slide rail 321 and the second slide rail 322. This rolling friction is much less than direct sliding friction, thus significantly reducing the resistance encountered by the second slide rail 322 when sliding on the first slide rail 321, ensuring smooth and efficient telescopic movement.

[0064] In another specific embodiment, the number and arrangement of the balls can be adjusted according to actual needs, or balls of different materials can be used to adapt to different usage environments and load conditions.

[0065] Specifically, the upper body telescopic assembly 31 includes: a mounting bracket 311, which is located on the inner wall of the front body assembly 1. Two mounting brackets 311 are provided, and the two mounting brackets 311 are arranged opposite each other along the width direction of the front body assembly 1; and a slide rail mechanism 312, which has two slide rails arranged opposite each other. The slide rails are located on the side of the mounting bracket 311 away from the front body assembly 1, and the slide rails are connected to the mounting bracket 311. The slide rails extend along the length direction of the mounting bracket 311.

[0066] Mounting bracket 311 is a metal structure fixed to the inner wall of the front body assembly 1. Its design takes into account factors such as strength, weight, and durability. Typically, mounting bracket 311 is made of high-strength steel and is fixed to the inner wall of the front body assembly 1 by welding or bolting. Its position is chosen at both ends in the width direction of the vehicle body to provide stable and symmetrical support points for the slide rail mechanism 312. The main function of mounting bracket 311 is to provide a mounting base for the slide rail mechanism 312 in the upper body telescopic assembly 31 and other related components, ensuring the stability and safety of these components during vehicle operation.

[0067] The slide rail mechanism 312 consists of two opposing slide rails, each extending along the length of the mounting bracket 311, i.e., along the vehicle's direction of travel. The slide rails are typically made of high-strength aluminum alloy or steel, with finely machined surfaces to ensure smooth contact with the guide wheel assembly. The slide rails have internal grooves or tracks that match the guide wheels, guiding them along a predetermined path during extension and retraction. The two slide rails are symmetrical along the width of the vehicle, ensuring balance and stability during the extension and retraction of the upper body.

[0068] Specifically, the upper body telescopic assembly 31 further includes: a drive structure 313, which is located on the side of the mounting bracket 311 away from the front body assembly 1, with part of the drive structure 313 located below the slide rail and the other part located on the outer sides of both ends of the slide rail; and a hinge structure 314, which is located inside the slide rail and is connected to the drive structure 313 by a steel wire. Both ends of the upper body of the rear body assembly 2 are connected to the side of the hinge structure 314 away from the slide rail. The drive structure 313 drives the hinge structure 314 to reciprocate along the extension path of the slide rail, so that the upper body of the rear body assembly 2 switches between the initial position and the extended position.

[0069] The drive structure 313 is the power core of the entire telescopic assembly. Located on the side of the mounting bracket 311 away from the front vehicle assembly 1, part of its structure is cleverly arranged below the slide rail to save space, while other parts are located on the outer sides of both ends of the slide rail to facilitate connection with the hinge structure 314. The drive structure 313 may include a motor, a reducer, a transmission device (such as gears, chains, or belts), and a wire guide system to convert the power generated by the motor into the reciprocating motion of the hinge structure 314. The main function of the drive structure 313 is to convert the rotational power of the motor into linear tension, which is connected to the hinge structure 314 via a wire, controlling the movement of the hinge structure within the slide rail. The starting and stopping, and forward and reverse rotation of the motor directly determine the direction and speed of movement of the hinge structure, which is a key factor in realizing wheelbase extension and retraction.

[0070] The hinge structure 314 is a flexible component connecting the upper body of the rear vehicle assembly 2 and the slide rail mechanism 312. The hinge structure 314 is located inside the slide rail, with its outer ends connected to the drive structure 313 via steel wires, while the side away from the slide rail is directly connected to the upper body of the rear vehicle assembly 2. This layout ensures that when the upper body extends or retracts, the hinge structure 314 can move precisely along the extension path of the slide rail under the control of the drive structure 313, thereby driving the upper body to complete the extension or retraction action.

[0071] Specifically, such as Figure 7 , Figure 8 As shown, the hinge structure 314 includes a guide wheel assembly, which includes a guide wheel bracket 3143. A first guide wheel 3141 and a second guide wheel 3142 are respectively located on the upper and lower sides of the guide wheel bracket 3143. The first guide wheel 3141 is positioned near the top of the slide rail, and the second guide wheel is positioned near the bottom of the slide rail. A steel cable is connected to either the first guide wheel 3141 or the second guide wheel 3142, and the steel cable pulls the guide wheel assembly to reciprocate along the extension direction of the slide rail. The guide wheel assembly can reciprocate along the extension direction of the slide rail. This structure ensures that, under the combined action of hydraulic and electric drive, the vehicle body can smoothly complete the positive extension in the vehicle's direction of travel and the negative retraction in the vehicle's direction of travel, thereby achieving dynamic adjustment of the wheelbase. This hinge structure not only ensures the stability and safety of the upper body during vehicle body extension and retraction but also improves the overall mechanism's motion efficiency and operational flexibility, meeting users' personalized wheelbase needs in different scenarios.

[0072] The guide wheel bracket 3143 is a support component connecting the first guide wheel 3141 and the second guide wheel 3142. It is designed to have sufficient strength and rigidity to withstand the tension generated when the steel cable is pulled and the friction on the slide rail. The shape of the guide wheel bracket 3143 is optimized according to the cross-section of the slide rail and the layout of the guide wheels to ensure that the guide wheels rotate stably above it, while also facilitating the assembly and disassembly of the guide wheel assembly and the slide rail.

[0073] The first guide wheel 3141 and the second guide wheel 3142 are respectively mounted on the upper and lower sides of the guide wheel bracket 3143. Their dimensions, materials, and surface treatments must be carefully designed to adapt to different slide rail materials and working environments. The guide wheels are usually made of wear-resistant materials with smooth surfaces or self-lubricating coatings to reduce frictional wear when in contact with the slide rail. The first guide wheel 3141 is located near the top of the slide rail, while the second guide wheel 3142 is located near the bottom of the slide rail. This layout helps to evenly distribute the weight of the guide wheel assembly while providing stable support in the width direction of the slide rail, preventing tilting or offset during reciprocating motion.

[0074] When the upper body telescopic mechanism is in operation, the steel cable pulls the first guide wheel 3141 or the second guide wheel 3142 in the guide wheel assembly, causing the guide wheel assembly to move along the extension direction of the slide rail. Because the guide wheel is in close contact with the slide rail, this pulling not only drives the guide wheel assembly itself but also indirectly propels the connected upper body telescopic part. The rolling of the guide wheel replaces the traditional sliding contact, significantly reducing frictional resistance and making the entire telescopic process smoother, faster, and more energy-efficient. The guiding effect of the first guide wheel 3141 and the second guide wheel 3142 on the slide rail ensures the linearity and stability of the guide wheel assembly during reciprocating motion. Even when the motor is running at high speed or the vehicle is in a bumpy environment, the guide wheel can maintain good contact with the slide rail, ensuring that the telescopic action is not affected.

[0075] Specifically, such as Figure 6 , Figure 9 As shown, the drive structure 313 includes: a first bracket 3131; a second bracket 3132, the first bracket 3131 and the second bracket 3132 being located at both ends of the slide rail; and a motor 3133, the motor 3133 being located below the slide rail and fixed on the mounting bracket 311. One end of a steel cable is connected to the output shaft of the motor 3133, and the other end of the steel cable passes through the first bracket 3131, the hinge structure 314, and the second bracket 3132 in sequence and is connected to the motor 3133. By driving the output shaft of the motor 3133 to rotate, the steel cable can pull the guide wheel assembly to move back and forth along the extension direction of the slide rail, thereby switching the upper body of the rear vehicle assembly 2 between the initial position and the unfolded position.

[0076] The first bracket 3131 and the second bracket 3132 are components of the drive structure 313. They are fixed to both ends of the slide rail, respectively. The first bracket 3131 and the second bracket 3132 are mounted on the mounting bracket 311. The first bracket 3131 and the second bracket 3132 not only support and fix the steel rope, but also serve as guide points for the steel rope to move back and forth during the extension and retraction process. These brackets are usually made of high-strength materials and are designed with guide holes or pulleys through which the steel rope passes to ensure that the steel rope does not undergo unnecessary deviation or wear during traction.

[0077] The motor 3133 is the heart of the drive structure 313. Mounted below the slide rail and fixed to the mounting bracket 311, it efficiently converts electricity into rotational kinetic energy. The output shaft of the motor 3133 is connected to one end of the steel cable. When the motor starts, its output shaft rotates, causing the steel cable to wind or unwind, creating a force that pulls or releases the hinge structure 314. By precisely controlling the motor's direction and timing, the pulling distance of the steel cable can be adjusted, thereby controlling the precise switching of the upper body of the rear vehicle assembly 2 between the initial and extended positions. When the motor 3133 receives an extension signal, it starts and pulls the steel cable. The tension of the steel cable acts on the guide wheel assembly, causing it to move along the extension direction of the slide rail mechanism 312. The guide wheels roll smoothly inside the slide rail, reducing frictional resistance and ensuring smooth extension and retraction of the upper body.

[0078] Upon receiving a retraction signal, the motor reverses its direction or releases the tension in the steel cable, causing the guide wheel assembly to move along the extension direction of the slide rail mechanism 312 under the action of the reverse force or its own weight. Through the reverse rolling of the guide wheel and the slide rail, the upper body telescopic part is retracted to its initial position, and the wheelbase of the vehicle body is restored accordingly.

[0079] In one specific embodiment, depending on traffic conditions, when the vehicle needs to enter long wheelbase mode, the hydraulic drive assembly 323 receives a command from the control system, and the internal piston moves under the pressure of hydraulic oil, generating thrust. One end of the telescopic rod assembly is connected to the hydraulic drive assembly, and the other end is connected to the second slide rail of the telescopic lower body. Driven by the hydraulic drive assembly, the telescopic rod assembly extends along the vehicle's travel direction, transmitting force to the lower body of the rear body assembly. As the telescopic rod assembly extends, the second slide rail of the lower body of the rear body assembly, under the action of external force, generates a relative displacement with the first slide rail in the vehicle's travel direction. This process is assisted by the ball bearing assembly 7, ensuring smooth movement between the first and second slide rails and avoiding wear and noise caused by direct metal contact. Synchronously with the movement of the lower body telescopic assembly, the motor 3133 of the upper body telescopic assembly starts after receiving the extension signal, converting the rotational power into the force to pull the steel cable through an internal gear or belt transmission device. One end of the steel cable is connected to the output shaft of the motor 3133, and the other end passes through the first bracket 3131, then around the guide wheel (first guide wheel or second guide wheel) located on the hinge structure 314 inside the slide rail, and finally returns through the second bracket 3132 and reconnects to the motor 3133, forming a closed traction cycle. The motor 3133 pulls the guide wheel assembly to slide in the X direction inside the slide rail through the tension of the steel cable. The guide wheel in the guide wheel assembly is in close contact with the slide rail, and rolling friction replaces sliding friction, which significantly reduces the moving resistance and improves the extension efficiency. The movement of the guide wheel drives the hinge structure 314 to move along the extension direction of the slide rail. The hinge structure 314 is connected to the upper body of the rear body assembly 2, so the upper body also extends to the unfolded position with the movement of the guide wheel, thereby making the upper body and lower body of the rear body assembly 2 extend synchronously, realizing the increase of the wheelbase.

[0080] In another specific embodiment, for example, when a vehicle needs to park in a narrow parking space or on a dead-end road, the operation of parking an extended wheelbase vehicle is more difficult, thus requiring the vehicle to return to its initial state. When the vehicle needs to return to the short wheelbase mode, the hydraulic drive component and drive structure perform reverse operations respectively. The telescopic rod component retracts, and at the same time, the motor pulls the steel cable in the opposite direction, causing the guide wheel to slide in the opposite direction of travel within the guide rail, simultaneously pulling the upper and lower bodies of the rear body assembly 2 back to their initial positions, restoring the original wheelbase. Short wheelbase vehicles are more convenient to adjust their body posture in the same space environment, allowing for faster reversing into parking spaces.

[0081] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0082] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this invention.

[0083] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0084] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A vehicle, characterized in that, include: Front body assembly (1); The rear body assembly (2) is slidably connected to the front body assembly (1) via a telescopic assembly (3); The telescopic assembly (3) includes an upper body telescopic component (31) and a lower body telescopic component (32). One end of the upper body telescopic component (31) is connected to the upper body of the front body assembly (1), and the other end of the upper body telescopic component (31) is slidably connected to the upper body of the rear body assembly (2). One end of the lower body telescopic assembly (32) is connected to the lower body of the front body assembly (1), and the other end of the lower body telescopic assembly (32) is slidably connected to the lower body of the rear body assembly (2). The upper body telescopic assembly (31) and the lower body telescopic assembly (32) are controlled to work together so that the rear body assembly (2) has an initial position and the rear body assembly (2) has an unfolded position that moves away from the front body assembly (1).

2. The vehicle according to claim 1, characterized in that, The lower body telescopic assembly (32) also includes: The first slide rail (321) is connected at one end to the front body assembly (1) and extends toward the rear body assembly (2). The second slide rail (322) has one end slidably connected to the first slide rail (321) and the other end connected to the rear vehicle assembly (2); The connection between the first slide rail (321) and the second slide rail (322) forms an installation space.

3. The vehicle according to claim 2, characterized in that, The lower body telescopic assembly (32) further includes: a telescopic structure located within the installation space, one end of the telescopic structure being connected to the first slide rail (321), and the other end of the telescopic structure being connected to the second slide rail (322). By driving the telescopic structure, the lower body of the rear body assembly (2) can be switched between the initial position and the deployed position.

4. The vehicle according to claim 3, characterized in that, The telescopic structure includes: Telescopic rod assembly (324), one end of which is connected to the first slide rail (321), and the other end of which is connected to the second slide rail (322); A hydraulic drive assembly (323) is provided, one end of which is connected to the first slide rail (321), and the other end of which is connected to the telescopic rod assembly (324). The hydraulic drive assembly (323) can drive the telescopic rod assembly (324) to extend or retract along the direction of travel of the vehicle.

5. The vehicle according to claim 4, characterized in that, The telescopic structure further includes a ball assembly (7), which is located at the connection between the first slide rail (321) and the second slide rail (322).

6. The vehicle according to claim 5, characterized in that, The ball assembly (7) includes: A ball bearing bracket (72) is located between the first slide rail (321) and the second slide rail (322), and the ball bearing bracket (72) is connected to the second slide rail (322); The ball bearings (71) are provided in multiples. The multiple ball bearings (71) are evenly distributed along the connecting section of the first slide rail (321) and the second slide rail (322). Each ball bearing (71) is in contact with the second slide rail (322) and the first slide rail (321), and the ball bearing (71) abuts against the side of the ball bearing bracket (72) away from the second slide rail (322).

7. The vehicle according to claim 2, characterized in that, The upper body telescopic assembly (31) includes: Mounting bracket (311) is located on the inner wall of the front body assembly (1). There are two mounting brackets (311), which are arranged opposite to each other along the width direction of the front body assembly (1). The slide rail mechanism (312) has two slide rails arranged opposite each other. The slide rails are located on the side of the mounting bracket (311) away from the front vehicle assembly (1). The slide rails are connected to the mounting bracket (311) and extend along the length direction of the mounting bracket (311).

8. The vehicle according to claim 7, characterized in that, The upper body telescopic assembly (31) also includes: The drive structure (313) is located on the side of the mounting bracket (311) away from the front body assembly (1), with part of the drive structure (313) located below the slide rail and the other part of the drive structure (313) located on the outer sides of both ends of the slide rail. The hinge structure (314) is located inside the slide rail. The hinge structure (314) is connected to the drive structure (313) by a steel wire. The two ends of the upper body of the rear vehicle assembly (2) are connected to the side of the hinge structure (314) away from the slide rail on both sides. The hinge structure (314) is driven by the drive structure (313) to reciprocate along the extension path of the slide rail, so that the upper body of the rear vehicle assembly (2) switches between the initial position and the unfolded position.

9. The vehicle according to claim 8, characterized in that, The hinge structure (314) includes: The guide wheel assembly includes a guide wheel bracket (3143). The upper and lower sides of the guide wheel bracket (3143) are respectively provided with a first guide wheel (3141) and a second guide wheel (3142). The first guide wheel (3141) is located near the top of the slide rail, and the second guide wheel is located near the bottom of the slide rail. A steel rope is connected to the first guide wheel (3141) or the second guide wheel (3142). The steel rope pulls the guide wheel assembly to reciprocate along the extension direction of the slide rail.

10. The vehicle according to claim 9, characterized in that, The drive structure (313) includes: First support (3131); The second bracket (3132) is located at both ends of the slide rail, and the first bracket (3131) and the second bracket (3132) are located at both ends of the slide rail; The motor (3133) is located below the slide rail and is fixed on the mounting bracket (311). One end of the steel rope is connected to the output shaft of the motor (3133), and the other end of the steel rope passes through the first bracket (3131), the hinge structure (314), and the second bracket (3132) in sequence and is connected to the motor (3133). In this process, by driving the output shaft of the motor (3133) to rotate, the steel rope can pull the guide wheel assembly to move back and forth along the extension direction of the slide rail, thereby causing the upper body of the rear vehicle assembly (2) to switch between the initial position and the unfolded position.

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