Vehicle side step and vehicle

Abstract

The application provides a vehicle side ladder and a vehicle, and belongs to the technical field of vehicles. The inclination adjustment of the side ladder body is powered by an inclination driving mechanism. The side ladder body is pushed to incline towards or away from the side of the vehicle body through the extension or retraction of the supporting rod, so as to adapt to the outer contour of the vehicle body. The vehicle provided in the embodiment can flexibly adjust the inclination angle of the side ladder according to the outer contour of different vehicle models and use requirements, thereby improving the versatility and adaptability of the vehicle. Meanwhile, the side ladder structure is compact and easy to install, and is suitable for various vehicle models, thereby reducing the resource waste caused by repeated configuration of materials and the human resource waste caused by repeated labor.

Description

Technical Field

[0001] This invention belongs to the field of vehicle technology, specifically relating to a vehicle side ladder and the vehicle. Background Technology

[0002] Side ladders are widely used in campervans, off-road vehicles, engineering vehicles, fire trucks, police cars, ambulances, tank trucks, and various special vehicles. Their main purpose is to facilitate users to get on and off the roof of the vehicle for loading and unloading goods or using roof racks, thus meeting the needs of climbing the roof for travel, work, rescue, and other purposes.

[0003] The current side-climbing ladders have many shortcomings, specifically as follows: (1) Poor versatility. Due to the different outer contours and body heights of different vehicle models, the existing side ladders usually cannot be adjusted according to the vehicle's outer contour and usage requirements, resulting in poor versatility and inability to adapt to the exterior design of different vehicle models. Each vehicle model requires the design and manufacture of different side ladders, resulting in the duplication of resources and repetitive labor.

[0004] (2) Insufficient appearance coordination. The protruding climbing poles create an abrupt geometric misalignment with the curved surface of the vehicle body, which is inconsistent with the overall design style of the vehicle and directly affects the overall visual effect of the vehicle, significantly reducing the overall appearance and the presentation of the brand's high-end image.

[0005] (3) Safety issues: Side climbing ladders are generally installed close to the outside of the vehicle body. The gap between the climbing pole and the vehicle body is small, which cannot provide effective support in accordance with ergonomics for climbers. During the climbing process, the center of gravity of the feet cannot effectively contact the climbing pole, and cannot support the center of gravity of the climber well. Especially in rainy or snowy weather, because the climber's toes are in contact with the climbing pole, the foot is unstable, which can easily cause the climber to slip and fall. Summary of the Invention

[0006] This invention provides a vehicle side ladder and vehicle, aiming to solve the problem of poor versatility of existing vehicle side ladders, which leads to repetitive labor and resource allocation.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A vehicle side ladder is provided, comprising: a side ladder body and a tilting drive mechanism; the side ladder body has a lower mounting point at its lower end and an upper mounting point at its upper end; the tilting drive mechanism is mounted on the vehicle body and connects the upper mounting point and / or the lower mounting point; when the tilting drive mechanism is selectively connected to the upper mounting point, the lower mounting point is hinged to the vehicle body; when the tilting drive mechanism is selectively connected to the lower mounting point, the upper mounting point is hinged to the vehicle body. The tilting drive mechanism is hinged to the upper mounting point and / or the lower mounting point, pushing the side ladder body away from or towards the vehicle body to adapt to the outer contour of the vehicle body.

[0008] In conjunction with the first aspect, in one feasible manner, the tilting drive mechanism is disposed on the roof of the vehicle and includes a linear actuator and a movable plate. The linear actuator has a support rod connected to the movable plate, and the movable plate is hinged to the upper mounting point. The support rod pushes the side ladder body to tilt via the movable plate.

[0009] In conjunction with the first aspect, in one feasible manner, the side ladder body is provided with a flipping pedal, which is flipped in an unfolded state away from the vehicle body by a flipping drive mechanism, or flipped in a closed state towards the vehicle body.

[0010] In conjunction with the first aspect, in one feasible embodiment, the side ladder body includes a fixed ladder and a telescopic ladder. The fixed ladder includes a fixed side frame and a fixed climbing rod connected to the fixed side frame. The fixed side frame has a hollow cavity extending along its length direction, and the upper mounting point and the lower mounting point are located at the upper and lower ends of the fixed side frame. The telescopic ladder includes a movable side frame and a flip-up step connected to the movable side frame. The movable side frame is hidden in the hollow cavity by a telescopic drive mechanism. When the movable side frame extends out of the hollow cavity, the flip-up step flips away from the movable side frame in an unfolded state by a flip-up drive mechanism. When the movable side frame retracts into the hollow cavity, the flip-up step flips towards the fixed side frame in a closed state.

[0011] In conjunction with the first aspect, in one feasible embodiment, the telescopic drive mechanism includes a telescopic drive motor, a sprocket transmission assembly, and a rack and pinion telescopic assembly. The telescopic drive motor is mounted on the movable plate, and the movable plate is connected to the upper end of the fixed side frame. The sprocket transmission assembly includes a transmission gear set, a transmission rod, a transmission sprocket set, and a telescopic transmission chain. The transmission sprocket set is partially disposed within the hollow cavity, and the telescopic transmission chain is wound around the transmission sprocket set. The transmission rod is mounted on the movable plate, and both ends of the transmission rod are connected to the transmission sprocket set. The transmission gear set is connected between the telescopic drive motor and the transmission rod. The power of the telescopic drive motor is transmitted to the transmission rod via the transmission gear set, and the transmission rod drives the telescopic transmission chain through the transmission sprocket set; the gear and rack telescopic assembly rotates synchronously with the transmission sprocket set through the transmission shaft, causing the telescopic ladder to extend or retract.

[0012] In conjunction with the first aspect, in one feasible embodiment, the gear and rack telescopic assembly includes a telescopic synchronizing gear and a telescopic transmission rack meshing with the telescopic synchronizing gear, the telescopic transmission rack being disposed within the hollow cavity; the telescopic synchronizing gear is disposed on the moving side frame, the telescopic synchronizing gear being connected to the transmission sprocket assembly via the transmission shaft, and rotating synchronously with the transmission sprocket assembly, thereby driving the telescopic ladder to move along the telescopic transmission rack.

[0013] In conjunction with the first aspect, in one feasible embodiment, the transmission sprocket assembly includes a main transmission sprocket, a telescopic guide sprocket, a movable sprocket, and a driven transmission sprocket, all dispersed along the transmission direction of the telescopic transmission chain; the main transmission sprocket is exposed outside the hollow cavity, while the telescopic guide sprocket, the movable sprocket, and the driven transmission sprocket are all disposed within the hollow cavity; the main transmission sprocket is disposed at both ends of the transmission rod; the driven transmission sprocket is disposed at the lower end of the hollow cavity away from the transmission rod; the telescopic guide sprocket is disposed between the main transmission sprocket and the driven transmission sprocket; the movable sprocket is coaxially disposed on the transmission shaft with the telescopic synchronous gear.

[0014] In conjunction with the first aspect, in one feasible embodiment, the flipping drive mechanism includes a flipping drive motor and a sprocket and chain transmission assembly; a mounting cavity is provided within the moving side frame along its length direction, the sprocket and chain transmission assembly is hidden within the mounting cavity, and the flipping drive motor is mounted at one end of the moving side frame along its length direction; the sprocket and chain transmission assembly drives multiple flipping pedals to flip synchronously.

[0015] In conjunction with the first aspect, in one feasible embodiment, a linkage support assembly is further provided between the flip pedal and the moving side frame. One end of the linkage support assembly is hinged to the flip pedal, and the other end is hinged to the moving side frame. When the flip pedal is in the unfolded state, the linkage support assembly is in the extended state and forms a triangular support with the flip pedal and the moving side frame. When the flip pedal is in the closed state, the linkage support assembly is in the folded state.

[0016] The side ladder for vehicles provided by this invention, compared with the prior art, has the following advantages: the extension and retraction of the tilting drive mechanism can, according to the outer contour of different vehicle bodies, push the side ladder body to tilt towards or away from the side of the vehicle body, centered on the lower or upper mounting point, flexibly adjusting the tilt angle of the side ladder body. This feature makes the side ladder no longer limited to the use of a single vehicle model, greatly improving its versatility and solving the technical problem that existing side ladders cannot adjust the tilt angle according to the outer contour of the vehicle and usage requirements, resulting in poor versatility and inability to adapt to the shape design of different vehicle models.

[0017] Secondly, embodiments of the present invention also provide a vehicle including the aforementioned vehicle side ladder.

[0018] The vehicle provided in this embodiment, by installing this side ladder that can achieve angle tilt adjustment, allows for flexible adjustment of the tilt angle of the side ladder according to the shape and usage requirements of different vehicle models, thereby improving the vehicle's versatility and adaptability. At the same time, the device has a compact structure, is easy to install, and is suitable for various vehicle models, reducing resource waste caused by redundant material configuration and human resource waste caused by repetitive labor. Attached Figure Description

[0019] Figure 1 A three-dimensional structural diagram (visible appearance) of a vehicle side ladder provided in an embodiment of the present invention. Figure 2 A three-dimensional structural diagram of a vehicle side ladder provided in an embodiment of the present invention (showing the inside of the vehicle body); Figure 3 A schematic diagram of the usage state of the vehicle side ladder provided in an embodiment of the present invention (telescopic ladder extended, flip-up steps unfolded). Figure 4 A schematic diagram of the main structure (visible plan view) of the vehicle side ladder provided in an embodiment of the present invention. Figure 5 For along Figure 4 Cross-sectional view of line AA in the middle; Figure 6 For along Figure 4 Cross-sectional view of the middle BB line; Figure 7 For along Figure 4 Cross-sectional view of the CC line; Figure 8 A three-dimensional structural diagram of a vehicle side ladder provided in an embodiment of the present invention (showing the installation position of the telescopic drive motor and transmission rod in the telescopic drive mechanism, and showing the connection relationship between the moving plate and the linear actuator). Figure 9 A three-dimensional structural diagram of a vehicle side ladder provided in an embodiment of the present invention (showing the positional relationship and cooperation between the telescopic drive mechanism and the telescopic ladder). Figure 10 A three-dimensional structural diagram (visual appearance) of a fixed ladder provided in an embodiment of the present invention. Figure 11 A three-dimensional structural diagram of a fixed ladder provided in an embodiment of the present invention (showing the inside of the vehicle). Figure 12 This is a schematic diagram of the external main structure of the fixed climbing ladder provided in an embodiment of the present invention (visible appearance). Figure 13For along Figure 12 Cross-sectional view of the DD line; Figure 14 For along Figure 12 Cross-sectional view of the EE line; Figure 15 A three-dimensional structural diagram (visible appearance) of the telescopic ladder provided in an embodiment of the present invention. Figure 16 A three-dimensional structural diagram of the telescopic ladder provided in an embodiment of the present invention (showing the inside of the vehicle). Figure 17 This is a schematic diagram of the main structure of the telescopic ladder provided in an embodiment of the present invention (visual appearance). Figure 18 For along Figure 17 Cross-sectional view of the middle FF line; Figure 19 For along Figure 17 Cross-sectional view of the GG line in the middle; Figure 20 For along Figure 17 Cross-sectional view of the middle HH line; Figure 21 A three-dimensional structural diagram of the unfolded flip-up steps of the telescopic ladder provided in an embodiment of the present invention; Figure 22 A three-dimensional structural diagram of the retractable ladder in the closed state of the flip-up steps provided in an embodiment of the present invention (showing the installation position of the linkage support assembly). Figure 23 This is a three-dimensional structural diagram of the decorative cover provided in an embodiment of the present invention; Figure 24 A schematic diagram of the structure of a vehicle side ladder provided in an embodiment of the present invention (with the protective cover removed, showing the strut telescopic mechanism). Figure 25 This is a structural schematic diagram of a vehicle side ladder provided in an embodiment of the present invention (the telescopic cover is removed to show the support rod telescopic mechanism, and the telescopic ladder is removed to show the guide sliding hole). Figure 26 A schematic diagram of the internal structure of the upper mounting base provided in an embodiment of the present invention. Figure 1 (After removing the upper mounting bracket, the connection relationship between the moving plate and the linear actuator is shown.) Figure 27 A schematic diagram of the internal structure of the upper mounting base provided in an embodiment of the present invention. Figure 2 (After removing the upper mounting bracket, the connection relationship between the moving plate and the linear actuator is shown.) Figure 28 A schematic diagram of the structure of the upper mounting base provided in an embodiment of the present invention. Figure 1 ; Figure 29A schematic diagram of the structure of the upper mounting base provided in an embodiment of the present invention. Figure 2 ; Figure 30 A schematic diagram of the structure of the movable plate provided in an embodiment of the present invention. Figure 1 ; Figure 31 A schematic diagram of the structure of the movable plate provided in an embodiment of the present invention. Figure 2 ; Figure 32 A three-dimensional structural diagram of the side ladder installed on the vehicle body (telescopic ladder in retracted state) provided by the present invention. Figure 33 A three-dimensional structural diagram of the side ladder installed on the vehicle body (telescopic ladder extended state) provided by the present invention. Explanation of reference numerals in the attached figures: 100. Side ladder body; 101. Lower mounting point; 102. Lower fixed seat; 103. Fixed climbing rod; 104. Lower mounting shaft; 105. Guide slide hole; 106. Hollow cavity; 107. Chain drive guide groove; 108. Guide roller; 109. Guide bar; 110. Limiting groove; 111. Fixed side frame; 200. Upper mounting seat; 201. Protective cover; 202. Upper mounting point; 220. Guide rail slide groove; 221. Long strip hole; 230. Linear actuator; 24 0. Limiting plate; 241. Clearance window; 250. Telescopic protective cover; 260. Reserved connection hole; 300. Moving plate; 301. Extension plate; 302. Sliding wheel; 303. First rotating shaft; 304. Extension part; 305. Second rotating shaft; 400. Telescopic ladder; 401. Flipping step; 402. Moving side frame; 403. Guide groove; 404. Housing cavity; 405. Anti-slip structure; 500. Decorative cover; 501. Hole; 600. Telescopic drive mechanism; 601. Telescopic drive chain; 602. Drive rod; 603. Main drive sprocket; 604. Telescopic guide sprocket; 605. Movable sprocket; 606. Driven sprocket; 607. Telescopic synchronous gear; 608. Telescopic drive rack; 609. Limit stop; 610. Drive shaft; 611. Limit post; 612. Limit wheel; 613. Guide sleeve; 614. Telescopic drive motor; 615. Telescopic main gear; 616. Telescopic driven gear; 700. Tilting drive Mechanism; 701, Reversing drive motor; 702, Reversing drive chain; 703, Reversing drive sprocket; 704, Reversing guide sprocket; 705, Reversing driven sprocket; 706, Reversing main gear; 707, Reversing transmission gear; 708, Reversing support shaft; 709, Reversing drive shaft; 800, Linkage support assembly; 801, First link; 802, First shaft; 803, Second shaft; 804, Second link; 805, Limiting sliding hole; 806, Third shaft. Detailed Implementation

[0020] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0021] Please refer to the following: Figures 1 to 33 The present invention will now describe the vehicle side ladder provided. The vehicle side ladder includes a side ladder body 100 and a tilting drive mechanism. The side ladder body 100 has a lower mounting point 101 at its lower end and an upper mounting point 202 at its upper end. The tilting drive mechanism is mounted on the vehicle body and connects to the upper mounting point 202 and / or the lower mounting point 101. When the tilting drive mechanism is connected to the upper mounting point 202, the lower mounting point 101 is hinged to the vehicle body. When the tilting drive mechanism is connected to the lower mounting point 101, the upper mounting point 202 is hinged to the vehicle body. The tilting drive mechanism, hinged to the upper mounting point 202 and / or the lower mounting point 101, pushes the side ladder body 100 away from or towards the vehicle body to adapt to the vehicle's external contour.

[0022] When the tilting drive mechanism is selected to connect to the upper mounting point 202, the lower mounting point 101 is hinged to the vehicle body; when the tilting drive mechanism is selected to connect to the lower mounting point 101, the upper mounting point 202 is hinged to the vehicle body.

[0023] For example, when the tilting drive mechanism is selected to connect to the upper mounting point 202, the lower mounting point 101 is hinged to the vehicle body (see...). Figures 1 to 3 At this time, the tilting drive mechanism is installed on the vehicle body near the upper end of the side ladder body 100, and the support rod of the tilting drive mechanism is hinged to the upper mounting point 202. When the support rod extends, it pushes the side ladder body 100 to the lower mounting point 101 for support, and tilts it away from the side of the vehicle body with the lower mounting shaft 104 at the lower mounting point 101 as the center. When the support rod extends, it pushes the side ladder body 100 to the lower mounting point 101 for support, and tilts it closer to the side of the vehicle body with the lower mounting shaft 104 at the lower mounting point 101 as the center, so as to adapt to the outer contour of the vehicle body. The tilting angle of the side ladder body 100 can be adjusted by the stroke of the support rod extending or retracting, so as to adapt to different vehicle models.

[0024] When the tilting drive mechanism is connected to the lower mounting point 101, the upper mounting point 202 is hinged to the vehicle body (not shown in the figure); at this time, the tilting drive mechanism is installed on the vehicle body near the lower end of the side ladder body 100, and the support rod is hinged to the lower mounting point 101; when the support rod extends, it pushes the side ladder body 100 to tilt away from the side of the vehicle body with the upper mounting point 202 as the support and the axis of the upper mounting point 202 as the center; when the support rod extends, it pushes the side ladder body 100 closer to the vehicle body to adapt to the side shape of the vehicle body; by extending or retracting the support rod, the tilting angle of the side ladder body 100 can be adjusted to adapt to different vehicle models.

[0025] When the lower mounting point 101 and the upper mounting point 202 of the side ladder body 100 are respectively connected to a tilting drive mechanism (not shown in the figure), the two tilting drive mechanisms can extend at the same time, retract at the same time, or extend and retract at the same time according to the side shape of the vehicle body, thereby adjusting the tilt angle of the side ladder body 100 to adapt to different vehicle models.

[0026] In existing technologies, side ladders are generally fixed to the side of the vehicle body and do not have an adjustable function to adapt to changes in the vehicle's shape. Side ladders can only accommodate one type of vehicle, requiring different side ladders for different models, leading to duplication and waste of resources. In contrast, the vehicle side ladder provided in this embodiment has an adjustable tilt angle, offering several advantages over existing technologies: First, it achieves versatility for the side ladder. Through the extension and retraction of the support rod, the side ladder body 100 can be tilted towards or away from the side of the vehicle body, centered on the mounting point 101 below or the mounting point 202 above, according to the different side shapes of the vehicle body. This allows for flexible adjustment of the tilt angle of the side ladder body 100. This feature makes the side ladder no longer limited to a single vehicle model, greatly improving its versatility. It solves the technical problem of existing side ladders being unable to adjust their tilt angle according to the vehicle's shape and usage requirements, resulting in poor versatility and inability to adapt to the shape designs of different vehicle models. This addresses the first problem raised in the background art.

[0027] In terms of application, whether it is a sedan, SUV, suburban SUV, commercial vehicle, or other special vehicles such as tanker trucks and engineering vehicles, as long as there is a suitable installation position on the side of the vehicle body, the side ladder can be adapted and installed and work normally.

[0028] Secondly, installation is simple and convenient. The side ladder body 100 has only two mounting points, one at the top and one at the bottom. Since the side ladder body 100 needs to be tilted at different angles, both mounting points can be hinged to the vehicle body or to the support rod via pins. Therefore, for the same side ladder, when installed on different vehicle models, after equipping it with a tilting drive mechanism, the side ladder body 100 only needs to be installed at two points, making installation simple and convenient.

[0029] Moreover, from an installation perspective, the device has a compact structure and does not occupy excessive vehicle space. During vehicle manufacturing or modification, the side ladder tilt angle adjustment device can be easily installed in the appropriate position. This not only improves production efficiency but also reduces installation costs.

[0030] Third, this adjustment method is convenient to operate and does not require complicated tools or cumbersome steps. The tilt angle of the side ladder body 100 can be adjusted simply by extending or retracting the support rod. Moreover, due to the hinge point design at both ends of the side ladder body 100, the entire adjustment process is stable and reliable.

[0031] Moreover, this adjustable design brings more convenience to users. For example, when washing or repairing vehicles, adjusting the side ladder to a suitable angle can provide workers with a more comfortable and safer operating environment, improving work efficiency.

[0032] It should be noted that the embodiments described later in this specification are all based on the example of the tilting drive mechanism being connected to the upper end of the side ladder body 100, and can be used as a reference for the implementation of the tilting drive mechanism being connected to the lower end of the side ladder body 100.

[0033] In some embodiments, see Figures 1 to 9 , Figures 24 to 27 As shown, the tilting drive mechanism is mounted on the roof and includes a linear actuator 230 and a movable plate 300. The linear actuator 230 has a support rod connected to the movable plate 300, which is hinged to the upper mounting point 202 of the side ladder body 100. The support rod pushes the side ladder body 100 to tilt via the movable plate 300. This design allows the tilting drive mechanism to provide stable support force, ensuring the stability and safety of the side ladder during tilting. Simultaneously, the use of the linear actuator 230 makes the adjustment of the tilt angle more precise and controllable.

[0034] The tilting drive mechanism is mounted on the roof, providing ample installation space and making installation simple and convenient. For example, without considering the vehicle's appearance, one end of the linear actuator 230 can be directly mounted on the roof, and the support rod extends and retracts along the left and right directions of the vehicle body, pushing the movable plate 300 to move left and right, thus achieving the purpose of tilting angle adjustment with the mounting point below the side ladder body 100 as the support.

[0035] Since the support rod of the linear actuator 230 has a small cross-sectional area, the force-bearing area is increased by setting a movable plate 300 between the support rod and the side ladder body 100, thereby increasing the support force of the support rod on the side ladder body 100 and ensuring the support stability and safety of the side ladder body 100 when it is adjusted to a certain tilt angle.

[0036] Meanwhile, considering that the side ladder body 100 is a frame structure, specifically having two parallel side columns, the two side columns can be hinged simultaneously by setting a movable plate 300. At this time, the movable plate 300 can be moved by one or two linear actuators 230, thereby ensuring that the two sides of the side ladder body 100 tilt at the same angle, ensuring the stability, safety and adaptability of the support after the side ladder body 100 tilts.

[0037] When the tilt angle of the side ladder body 100 needs to be adjusted, the linear actuator 230 starts working, driving the support rod to extend and retract. Since the support rod is connected to the movable plate 300, and the movable plate 300 is hinged to the upper mounting point 202 of the side ladder body 100, the movable plate 300 moves accordingly when the support rod extends and retracts. As the movable plate 300 moves, it pushes the side ladder body 100 to gradually tilt around a certain lower mounting point.

[0038] Optionally, the linear actuator 230 can adopt any one of the following structures: pneumatic strut, electric push rod, hydraulic strut, or lead screw nut. The linear actuator 230 has a telescopic support rod.

[0039] In some embodiments, see Figures 1 to 7 , Figures 22 to 27 The vehicle side ladder also includes an upper mounting base 200 installed on the roof of the vehicle. The upper mounting base 200 has a receiving cavity in which the linear actuator 230 and the moving plate 300 are both disposed. The linear actuator 230 is fixedly connected to the inner wall of the receiving cavity, and the support rod is fixedly connected to the moving plate 300. A support guide structure for guiding the moving plate 300 is also provided in the receiving cavity. The upper mounting base 200 provides a receiving cavity for the linear actuator 230 and the moving plate 300. This design makes the installation of the tilting drive mechanism more compact, reduces the space occupied, and takes into account the overall vehicle appearance visibility. The support guide structure ensures the stability and guidance of the moving plate 300 during the extension and retraction process, preventing the moving plate 300 from deviating or swaying during movement.

[0040] In some embodiments, see Figures 6 to 9 , Figures 26 to 31 The supporting and guiding structure includes a guide rail groove 220 and a sliding wheel 302. The guide rail groove 220 is disposed within the receiving cavity; the sliding wheel 302 is disposed on the lower surface of the movable plate 300 and slides along the guide rail groove 220 with the movable plate 300. This design makes the movement of the movable plate 300 smoother, reduces friction and wear, and improves the durability and reliability of the device. The cooperation between the guide rail groove 220 and the sliding wheel ensures precise guidance of the movable plate 300 during extension and retraction.

[0041] In addition, to further improve the smoothness of the sliding wheel 302, a special lubricating coating can be applied to the surface of the sliding wheel. This coating can effectively reduce the coefficient of friction between the sliding wheel and the guide rail groove 220, making the moving plate 300 move more smoothly during extension and retraction, thereby improving the working efficiency of the entire device.

[0042] Optionally, the support and guide structure includes a guide rail fixed to the bottom of the receiving cavity and a slider fixed to the lower surface of the movable plate 300. The slider slides in cooperation with the guide rail. During operation, the pneumatic strut drives the support rod to extend, which drives the movable plate 300 to move along the guide rail, thereby driving the side ladder body 100 to adjust its tilt angle.

[0043] The following are specific embodiments of different types of linear actuators 230 combined with support and guide structures: Example 1: Pneumatic strut and guide rail groove 220 structure The pneumatic strut is fixedly connected to the bottom of the receiving cavity via a shaft, and the support rod of the pneumatic strut is fixedly connected to the movable plate 300. The lower surface of the movable plate 300 is equipped with sliding wheels, and the movable plate 300 slides along the guide rail groove 220 via the sliding wheels, realizing the adjustment of the tilt angle of the side ladder body 100. The extension and retraction of the pneumatic strut can be automatically controlled by an electrical control system to achieve precise adjustment of the tilt angle. The advantages of this structure are: simple structure, easy to automate control, and a large range of tilt angle adjustment.

[0044] Example 2: Hydraulic strut and guide rail structure Structural Description: The tilting drive mechanism employs a hydraulic strut and slide rail structure. One end of the hydraulic strut is fixed to the bottom of the receiving cavity, and the hydraulic support rod is rigidly connected to the movable plate 300. The lower surface of the movable plate 300 is equipped with sliding wheels, and the movable plate 300 slides along the guide rail via a slider, thereby adjusting the tilt angle of the side ladder body 100. The hydraulic system can be precisely controlled by an electronic control unit to achieve automatic adjustment of the tilt angle. The hydraulic system provides a large thrust, suitable for heavier side ladder structures, and the tilt angle adjustment is smooth.

[0045] Example 3: Electric push rod and guide rail groove 220 structure The electric push rod is fixedly connected to the bottom of the receiving cavity via a shaft, and its support rod is fixedly connected to the movable plate 300. The lower surface of the movable plate 300 is equipped with sliding wheels, which allow the movable plate 300 to slide along the guide rail groove 220, thus adjusting the tilt angle of the side ladder body 100. The extension and retraction of the electric push rod can be precisely controlled by a motor, achieving automatic adjustment of the tilt angle of the side ladder body 100. The length of the electric push rod can also be precisely controlled by a motor, achieving automatic adjustment of the tilt angle. The electric push rod offers high control precision and flexible tilt angle adjustment, making it suitable for various vehicle models.

[0046] Example 4: Screw nut and guide rail structure The two ends of the lead screw are rotatably mounted on the opposing inner walls of the receiving cavity. A nut is screwed onto the lead screw. One end of the support rod is connected to the nut, and the other end is connected to the side ladder body 100. Driven by a motor, the lead screw causes the nut to move linearly along the lead screw, thereby causing the support rod to reciprocate, thus adjusting the tilt angle of the side ladder body 100. The transmission of the lead screw and nut can be precisely controlled by the motor, achieving automatic adjustment of the tilt angle. The lead screw and nut transmission has high precision, a self-locking function, and stable tilt angle adjustment, making it suitable for scenarios requiring high-precision adjustment.

[0047] See Figures 28 to 29 The guide rail groove 220 has elongated holes 221 on its two groove walls, which extend along the sliding direction of the sliding wheel 302. The sliding wheel 302 is connected to the lower surface of the moving plate 300 through the first rotating shaft 303. The two ends of the first rotating shaft 303 pass through the corresponding elongated holes 221. This structural design, through the first rotating shaft 303 passing through the elongated hole 221, connects the guide rail groove 220 to the movable plate 300. In other words, it limits the movable plate 300 to the upper mounting base 200, preventing the movable plate 300 from tilting and the sliding wheel 302 from detaching from the guide rail groove 220 when the side ladder body 100 is tilted and bearing weight. This structural design not only ensures that the movable plate 300 maintains a good linear trajectory when moving with the sliding wheel 302, but also prevents the movable plate 300 from detaching from the upper mounting base 200, improving the robustness of the connection between the movable plate 300 as a support rod and the side ladder body 100, thereby ensuring the safety and reliability of the side ladder body 100 under load. Furthermore, the guidance and limitation of the sliding wheel 302 through the elongated hole 221 allows the sliding wheel to move precisely along the direction of the elongated hole 221 during sliding, further improving the movement accuracy and stability of the movable plate 300.

[0048] When the supporting guide structure is a slide rail and slider combination structure, an I-shaped or T-shaped slide rail can be used, and the matching slider is provided with an I-shaped or T-shaped groove. In this way, the combination of slider and slide rail has achieved the purpose of preventing the moving plate 300 from tilting.

[0049] See Figures 24 to 29The upper mounting base 200 is a cavity-like structure with a receiving cavity. A limiting plate 240, i.e., the side wall of the receiving cavity, is formed on the side of the side ladder body 100. One end of the guide rail groove 220 abuts against the limiting plate 240, and the other end abuts against the side wall of the receiving cavity relative to the limiting plate 240, thus limiting the travel distance of the sliding wheel 302 and also limiting the travel distance of the moving plate 300 and the extension / retraction of the support rod. Simultaneously, it is necessary to limit... The mounting plate 240 has an clearance window 241, through which the movable plate 300 is connected to the upper mounting point 202 at the upper end of the side ladder body 100. The movable plate 300 has an extension 304 extending out of the clearance window 241, and an extension plate 301 is provided on the lower surface of the extension 304, so that the support rod can be vertically connected to the extension plate 301. The extension plate 301 is hinged to the upper end of the side ladder body 100 through a second pivot 305.

[0050] In this embodiment, the side wall of the upper mounting base 200 forms a limiting structure for the movable plate 300. This design restricts the movement range of the movable plate 300 by the limiting plate 240. This limitation by the limiting plate 240 is a mechanical limitation, which prevents the risk of damage to the device due to excessive movement of the movable plate 300 in the event of malfunction or failure of the pneumatically or electrically controlled linear actuator 230. Simultaneously, the design of the clearance window 241 ensures that the movable plate 300 will not interfere with other components during movement, improving the safety and reliability of the device.

[0051] See Figures 24 to 25 A telescopic cover 250 is provided between the side ladder body 100 and the limiting plate 240; the telescopic cover 250 can extend and retract according to the different tilt angles of the side ladder body 100. In this embodiment, a telescopic cover 250 is added to the outside of the upper mounting base 200. The telescopic cover 250 is made of flexible material to avoid damage to the related components caused by rigid connections. It is located between the side ladder body 100 and the limiting plate 240 and can extend and retract according to the tilt angle of the side ladder body 100. This design not only protects the connecting parts between the tilting drive mechanism and the side ladder body 100, preventing external environmental factors such as dust and rain from corroding the device and extending the service life of the device; but also avoids the unpleasant appearance caused by exposed connecting parts between the tilting drive mechanism and the side ladder body 100, thereby ensuring the mobility, sealing and aesthetics of the device.

[0052] See Figures 1 to 7A protective cover 201 is provided on the upper mounting base 200, and the tilting drive mechanism and the telescopic cover 250 are both covered under the protective cover 201. This design further enhances the protective performance, prevents damage to the tilting drive mechanism and the telescopic cover 250 from the external environment, and improves the durability and reliability of the device; at the same time, it avoids the unpleasant appearance caused by the exposed tilting drive mechanism, thereby ensuring the mobility, sealing and aesthetics of the device.

[0053] In particular, the tilting drive mechanism can be housed within the upper mounting base 200 provided on the upper end of the side ladder body 100. This eliminates any exposed components, preventing the linear actuator 230, guide rail 220, and sliding wheels 302 from failing due to wind and rain, and significantly improving the ease of handling and installation. For example, when retrofitting a vehicle with a side ladder, the side ladder is transported to the installation site as a single unit. Then, the upper mounting base 200 is simply fixed to the vehicle roof, and the lower mounting point of the side ladder body 100 is hinged to the vehicle body.

[0054] Specifically, see Figure 28 and Figure 29 The upper mounting base 200 is provided with a reserved connection hole 260, through which the upper mounting base 200 can be fixed to the roof of the vehicle.

[0055] See Figure 8 , Figures 28 to 31 The tilting drive mechanism includes two linear actuators 230 and a movable plate 300; the two linear actuators 230 correspond to the two side columns of the side ladder body 100, respectively. The corresponding limiting plate 240 is provided with two clearance windows 241 to allow the extensions 304 at both ends of the movable plate 300 to extend and hinge with the corresponding fixed side frame 111. By providing two guide rail grooves 220 within the receiving cavity, and in conjunction with two sliding wheels 302, the movement trajectory of the movable plate 300 is more precisely guided. This design allows both sides of the side ladder body 100 to tilt simultaneously, ensuring the balance and stability of the side ladder during tilting and avoiding inconsistent tilt angles caused by uneven force on one side.

[0056] The above embodiments focus on the explanation and description of the side ladder tilt angle adjustment. By adjusting the side ladder tilt angle through the tilt drive mechanism and optimizing the adjustment process, the problem that the side ladder cannot be used in different vehicle models can be solved.

[0057] Regarding the second issue of insufficient aesthetic harmony raised in the background art, this application adopts a technical means of using a flip-up pedal to solve this problem. The specific implementation means is as follows: a flip-up pedal is provided on the side ladder body. The flip-up pedal 401 is flipped in an unfolded state away from the vehicle body by a flip-up drive mechanism, or flipped in a closed state towards the vehicle body.

[0058] Compared with side ladders using simple climbing poles, this side ladder with flip-up pedals 401 has the following advantages: (1) It is consistent with the vehicle body in appearance. This application abandons the traditional climbing pole side ladder and adopts a flip-up pedal 401 that can be flipped, unfolded and closed. When climbing is required, the flip-up pedal 401 is flipped away from the vehicle body by the flip-up drive mechanism and unfolded. The flip-up pedal 401 is presented in front of the climber in a step-like manner, and the climber can climb up step by step. When climbing is not required, the flip-up pedal 401 is flipped towards the side ladder frame by the flip-up drive mechanism and closed. At this time, the outer surface of the flip-up pedal 401 can be perfectly connected with the vehicle body. The appearance can also be improved and personalized by design. This effectively solves the problem of insufficient coordination of the overall appearance of the vehicle caused by the abrupt climbing poles of the existing side ladders and improves the overall appearance quality of the vehicle.

[0059] (2) In terms of safety, the flip pedal 401 has a larger footing surface than the climbing pole when unfolded, which can provide climbers with more stable support. Especially in rainy or snowy weather, the larger contact area between the feet and the flip pedal can greatly reduce the risk of climbers slipping and falling.

[0060] It should be clarified that the flip pedal 401 can be used on fixed side ladders with adjustable tilt angle. When the side ladder body is a fixed structure, the flip drive mechanism is installed in the hollow cavity inside the side ladder body and is not exposed. The flip pedal 401 tilts synchronously with the side ladder body. When the side ladder is needed, the flip pedal unfolds. When it is not needed, the flip pedal closes on the side ladder body. At this time, the exposed surface of the flip pedal can be designed with patterns, stickers, and other personalized designs.

[0061] The flip-up step 401 can also be installed on the telescopic ladder, unfolding as the telescopic ladder extends and closing before the telescopic ladder retracts, so as to extend and retract onto the fixed side frame of the side ladder body. This embodiment will be described in detail in the following specific embodiments.

[0062] The following embodiments focus on explaining and describing the structure of the side ladder body, including the fixed ladder, the telescopic ladder 400, and the rotating step 401. The fixed ladder can be tilted at an adjustable angle via a tilting drive mechanism. The telescopic ladder 400 is mounted on the fixed ladder, and the rotating step 401 is mounted on the telescopic ladder 400. Therefore, both the telescopic ladder 400 and the rotating step 401 tilt synchronously with the fixed ladder, adapting to the outer contours of different vehicle models; only the fixed ladder needs adjustment.

[0063] Furthermore, the telescopic ladder 400, which extends when in use and retracts when not in use, along with the large tread area of ​​the flip-up step 401, can provide safety for driving and climbing, thus solving the third problem raised in the background technology.

[0064] Therefore, the following embodiments only focus on describing how the telescopic ladder achieves telescopic extension and how the flip-up step achieves synchronous flipping, and the part about tilt angle adjustment will not be repeated.

[0065] In some embodiments, see Figures 1 to 3 The side ladder body 100 includes a fixed ladder and a telescopic ladder 400. The fixed ladder includes a fixed side frame 111 and a fixed climbing rod 103 connected to the fixed side frame 111. The fixed side frame 111 has a hollow cavity 106 extending along its length direction. The upper mounting point 202 and the lower mounting point 101 are located at the upper and lower ends of the fixed side frame 111. The telescopic ladder 400 includes a movable side frame 402 and a flipping step 401 connected to the movable side frame 402. The movable side frame 402 is hidden in the hollow cavity 106 by a telescopic drive mechanism 600. When the movable side frame 402 extends out of the hollow cavity 106, the flipping step 401 flips away from the movable side frame 402 in an unfolded state by a flipping drive mechanism 700. When the movable side frame 402 retracts into the hollow cavity 106, the flipping step 401 flips towards the fixed side frame 111 in a closed state.

[0066] Among them, the inner surfaces of the fixed side frame 111 are respectively provided with guide sliding holes 105 for the telescopic movement of the telescopic ladder 400 (see Figure 10 The two ends of the flip pedal 401 are connected to the moving side frame 402 and need to move synchronously with the moving side frame 402. The guide slide hole 105 is provided so that the flip pedal 401 can move with the moving side frame 402 without obstruction.

[0067] The guide holes 105 provided on the inner surfaces of the fixed side frame 111 provide guidance for the telescopic movement of the telescopic ladder 400. Since the moving side frame 402 needs to be hidden inside the fixed side frame 111, and the telescopic ladder 400 also needs to be equipped with a flip-up step 401 for climbers, and the flip-up step 401 cannot be hidden in the hollow cavity 106, the guide holes 105 ensure the overall telescopic movement of the telescopic ladder 400. This design also ensures that the telescopic ladder 400 moves in the correct direction during telescopic movement, avoiding deviation, jamming, and other phenomena, thereby ensuring the smoothness of the telescopic movement, extending the service life of the side ladder, and making it more convenient and faster for users to operate the telescopic ladder 400.

[0068] Combination Figures 1 to 6 A decorative cover 500 is also provided at the lower end of the fixed side frame 111. The decorative cover 500 has a shaped hole 501 that matches the cross-section of the movable side frame 402, for the extension or retraction of the telescopic ladder 400. For ease of understanding, Figure 23 A three-dimensional schematic diagram of decorative cover 500 is provided.

[0069] Explained, when the flip-up pedal 401 is in the unfolded state, it forms a ladder-like staircase to facilitate climbing; when unfolded, the flip-up pedal 401 is generally in a horizontal state (see...). Figure 3 In particular, the foot surface of the flip pedal 401 is horizontal, while the moving side frame 402 is attached to the shape of the vehicle body. Due to the limitations of the vehicle body shape, the moving side frame 402 is generally arranged vertically, or it can be arranged at an angle towards the vehicle body. Therefore, depending on the installation method of the moving side frame 402, after the flip pedal 401 is unfolded, the angle between the foot surface of the flip pedal 401 and the moving side frame 402 is generally 90°-100°, so that the climber will not fall backward when climbing. When the flip pedal 401 is in the closed state (see...), Figure 1 The foot surface of the flip pedal 401 is close to the vehicle body and is basically parallel to the side of the vehicle body or the moving side frame 402. At this time, the side of the flip pedal 401 opposite to the foot surface is the exposed surface. The exposed surface can be parallel to the foot surface or not. Because the exposed surface of the flip pedal 401 is also the appearance surface, it can be designed as a curved surface with an arc to follow the overall vehicle line, thereby improving the appearance visibility. Moreover, according to personalized needs, graffiti or stickers can be applied to the exposed surface.

[0070] It should also be explained that the number of flip pedals 401 is generally multiple. This application does not limit the number of flip pedals 401 because it is considered that even one flip pedal 401 is equally applicable.

[0071] This embodiment, based on a telescopic ladder and a flip-up step, offers the following advantages compared to existing technologies: First, its appearance is consistent with the vehicle body (see...). Figure 32This application abandons the side-climbing ladder based on exposed movable ladders and slides. By setting a hollow cavity 106 in the fixed side frame 111, the telescopic ladder 400 can be hidden in the hollow cavity 106. When not in use, the telescopic ladder 400 retracts into the side-climbing ladder body 100. When installed on the vehicle body, only the side-climbing ladder body 100 is exposed, making the vehicle body look neat and improving the overall appearance quality of the vehicle. At the same time, it adopts a flip-up and foldable pedal flipping mechanism. When climbing is required, the telescopic ladder 400 extends, and the flipping pedal 401 is driven by the flipping drive mechanism 700 to flip away from the vehicle body to unfold, so that the flipping pedal 401 presents a stepped appearance. For climbers, the steps are easily ascended. When not in use, the flipping drive mechanism 700 drives the flipping pedal 401 to flip towards the fixed side frame 111, closing it in place. The telescopic ladder 400 is then moved upwards by the telescopic drive mechanism 600 until the moving side frame 402 retracts into the hollow cavity 106 and is hidden. At this time, the outer surface of the flipping pedal 401 can be perfectly integrated with the vehicle's external contour. The design can also enhance the aesthetics and personalization needs, effectively solving the problem of the existing side ladder's climbing poles being obtrusive and causing poor visibility of the vehicle's appearance. This improves the overall aesthetics of the vehicle and enhances the value of the vehicle as a high-end brand.

[0072] Secondly, when the telescopic ladder 400 is retracted and the flip-up pedal 401 is closed, the flip-up pedal 401 can also cover the fixed climbing rod 103 on the fixed side frame 111, so that the fixed climbing rod 103 is not exposed; in terms of appearance, only the outer surface of the fixed side frame 111 and the flip-up pedal 401 is visible, which further improves the visibility of the overall vehicle appearance.

[0073] Third, in terms of security (see Figure 33 When the flip pedal 401 is unfolded, it presents a larger foot surface area than the climbing pole, which can provide climbers with more stable support. Especially in rainy or snowy weather, the larger contact area between the feet and the flip pedal 401 can greatly reduce the risk of climbers slipping and falling.

[0074] Fourth, avoid potential safety hazards during driving (see...) Figure 32 When in use, the telescopic ladder 400 extends, lengthening the overall length of the side ladder. When not in use, the telescopic ladder 400 retracts into the side ladder body 100, shortening the overall length of the side ladder. For vehicles, this allows for a more rational layout of equipment within limited space, greatly saving space and preventing the side ladder from occupying too much external space. This reduces potential safety hazards caused by the extension of the side ladder during driving, such as collisions with the ground or roadside objects, resulting in scratches and disrupted driving. Fifth, the design of the 400 telescopic ladder also improves the versatility of the side ladder for use on vehicles of different heights.

[0075] Sixth, installation and disassembly are simple and convenient. The moving side frame 402 can be retracted into the hollow cavity 106 of the fixed side frame 111 through the telescopic drive mechanism 600, with only the side ladder body 100 exposed and visible. During installation, it is only necessary to select two points on the side ladder body 100 to install it onto the vehicle body. The installation and disassembly of the side ladder are simple and convenient.

[0076] Since the telescopic drive mechanism 600 of the telescopic ladder and the flipping drive mechanism of the flipping step 401 do not interfere with each other, the following description will focus on the telescopic drive mechanism 600 of the telescopic ladder 400.

[0077] Combination Figure 1 and Figure 2 , Figure 32 and Figure 33 The side ladder body 100 has an upper mounting point 202 with an upper mounting seat 200 and a lower mounting point 101 with a lower mounting seat. Correspondingly, the vehicle body has an upper fixed seat and a lower fixed seat 102. The lower end of the side ladder body 100 is fixed to the vehicle body via a lower mounting shaft 104, which passes through the lower mounting seat and the lower fixed seat 102. The upper mounting seat 200 can be fixed to the roof or the side of the vehicle body. Since the upper end of the side ladder body 100 also has a movable plate 300 for mounting the telescopic drive mechanism 600, the movable plate 300 is fixed to the upper mounting seat 200. With this structural design, the moving side frame 402 can retract into the hollow cavity 106 of the fixed side frame 111 via the telescopic drive mechanism 600, leaving only the side ladder body 100 exposed. During installation, only two points of the side ladder body 100 need to be installed onto the vehicle body, making the installation and disassembly of the side ladder simple and convenient.

[0078] In some embodiments, see Figures 5 to 9 The telescopic drive mechanism 600 includes a telescopic drive motor 614, a sprocket transmission assembly, and a rack and pinion telescopic assembly. The telescopic drive motor 614 is mounted on a movable plate 300, which is mounted on the upper end of two fixed side frames 111. The movable plate 300 also provides mounting support for the sprocket transmission assembly.

[0079] See Figures 5 to 9The sprocket transmission assembly includes a transmission gear set, a transmission rod 602, two sets of transmission sprockets, and two telescopic transmission chains 601. The transmission sprocket sets are located within the hollow cavity 106, and the telescopic transmission chains 601 are wound around the transmission sprocket sets, extending along the length of the hollow cavity 106. The transmission rod 602 is mounted on the movable plate 300, and both ends of the transmission rod 602 are connected to the transmission sprocket sets. The transmission gear set is connected between the telescopic drive motor 614 and the transmission rod 602. The power of the telescopic drive motor 614 is transmitted to the transmission rod 602 via the transmission gear set, and the transmission rod 602 drives the telescopic transmission chains 601 synchronously through the transmission sprocket sets. The telescopic drive motor 614 is installed between the two telescopic transmission chains 601, and can transmit power synchronously to the telescopic transmission chains 601 through the transmission rod 602, thereby realizing the synchronous movement of the two moving side frames 402. This structure is compact, has good integration, and saves installation space.

[0080] In actual use, a protective cover 201 is installed on the movable plate 300 (see...). Figures 1 to 6 The transmission gear set, transmission rod 602, the portion of the telescopic transmission chain 601 exposed in the hollow cavity 106, and the transmission sprocket set are all covered inside the protective cover 201 to prevent damage from dust, rain, snow, etc. Moreover, when installing the side ladder as a whole, it is only necessary to set the mounting points at the upper and lower ends of the side ladder body 100, or to set the mounting point at the upper end of the side ladder body 100 on the movable plate 300.

[0081] Combination Figure 8 and Figure 9 The transmission gear set includes a telescopic main gear 615 and a telescopic driven gear 616 that mesh with each other. The telescopic main gear 615 is mounted on the main shaft of the telescopic drive motor 614, and the telescopic driven gear 616 is mounted on the transmission rod 602.

[0082] See Figures 5 to 9 The gear and rack telescopic assembly includes a telescopic synchronous gear 607 and a telescopic transmission rack 608 that meshes with the telescopic synchronous gear 607. The telescopic transmission rack 608 is disposed in the hollow cavity 106. The telescopic synchronous gear 607 is disposed on the moving side frame 402. The telescopic synchronous gear 607 is connected to the transmission sprocket group through the transmission shaft 610 and rotates synchronously with the transmission sprocket group, driving the telescopic ladder 400 to move along the telescopic transmission rack 608.

[0083] The power transmission path of this application is as follows: When the telescopic ladder 400 needs to be extended, the telescopic drive motor 614 is started, and the power is transmitted to the telescopic transmission chain 601 through the transmission gear set, transmission rod 602, and transmission sprocket set. The telescopic transmission chain 601 drives the telescopic synchronous gear 607 to move along the telescopic transmission rack 608, so as to realize the purpose of the telescopic ladder 400 extending out of the side ladder body 100.

[0084] The telescopic drive mechanism 600 of this application uses a sprocket and chain drive and a gear and rack telescopic method to drive the telescopic ladder 400 to telescopic movement. The beneficial effects are as follows: First, this method can adapt to the variable trajectory movement of the side ladder curve. The telescopic drive chain 601 can extend along the side ladder curve through the guide of the sprocket, which can realize long-distance power transmission under the curved path. In this way, the sprocket telescopic drive motor 614 can be arranged on the upper end of the fixed side frame 111 or on the roof. This design facilitates the installation and disassembly of the telescopic drive motor 614. The telescopic drive chain 601 extends into the hollow cavity 106 and is connected to the moving side frame 402 in the hollow cavity 106. Secondly, a telescopic drive motor 614 can be installed on the fixed side frame 111. One telescopic drive motor 614 drives two sets of transmission sprockets through the transmission rod 602 to realize the synchronous transmission of the two telescopic transmission chains 601, ensuring the synchronicity and stability of the telescopic movement of the moving side frame 402, and providing stable and reliable climbing support for climbers.

[0085] Third, in terms of power transmission, the sprocket and chain drive has high transmission efficiency, effectively transmitting the power of the telescopic drive motor 614 to the gear and rack, ensuring sufficient power for the telescopic movement of the telescopic ladder 400. The tight meshing between the telescopic drive chain 601 and the sprocket prevents slippage, making the entire drive process more stable and reliable, and enabling precise control of the telescopic displacement of the telescopic ladder 400.

[0086] Fourth, the rack and pinion telescopic assembly provides accurate guidance for the telescopic movement of the telescopic ladder 400. The high precision of the gear and rack engagement ensures linear motion during telescopic movement, effectively preventing instability such as skewing of the telescopic ladder 400. Furthermore, this structure can withstand significant loads, allowing the telescopic ladder 400 to continue its telescopic operation smoothly even when carrying heavy equipment or personnel.

[0087] In summary, the flexible transmission characteristics of the sprocket chain combined with the precise guidance of the gear rack allows for flexible adjustment of the telescopic ladder 400's motion posture according to the side ladder curve. This not only ensures the normal operation of the telescopic ladder 400 on complex trajectories but also reduces additional resistance caused by trajectory changes, lowers the load on the drive motor, and extends the service life of the drive mechanism.

[0088] The telescopic drive mechanism 600 can also employ other technical means, such as using fixed pulleys, movable pulleys, and winding ropes for lifting. The winding ropes are connected to the movable side frame 402 of the telescopic ladder 400 to realize the extension or retraction of the movable side frame 402. The guide bar 109 is set in the hollow cavity 106, and the slider cooperates with the guide bar 109 and is set on the movable side frame 402 to guide the movement of the telescopic ladder 400. Linear actuators such as electric push rods, pneumatic struts, or hydraulic struts are used to realize the telescopic movement of the telescopic ladder 400, and the slider cooperates with the guide bar 109 to guide the movement of the telescopic ladder 400.

[0089] In some embodiments, see Figure 5 and Figure 6 The telescopic synchronous gear 607 is located at the upper end of the moving side frame 402, and the upper and lower ends of the telescopic transmission rack 608 are respectively provided with limiting blocks 609 to stop the telescopic synchronous gear 607. The limiting blocks 609 can effectively prevent the telescopic synchronous gear 607 from excessive displacement during operation, limit the range of motion of the telescopic synchronous gear 607, and thus limit the range of motion of the telescopic ladder 400, avoiding the risk of jamming due to excessive retraction of the telescopic ladder 400, or the risk of the telescopic ladder 400 falling off due to excessive extension. Specifically, when the moving side frame 402 moves, the telescopic synchronous gear 607 interacts with the telescopic transmission rack 608. The limiting block 609 at the upper end of the telescopic transmission rack 608 can prevent the telescopic synchronous gear 607 from disengaging upward from the constraint of the telescopic transmission rack 608, thereby preventing the telescopic ladder 400 from excessively retracting. The limiting block 609 at the lower end of the telescopic transmission rack 608 can prevent the telescopic ladder 400 from disengaging downward from the telescopic transmission rack 608 and disengaging from the side ladder body 100.

[0090] In some embodiments, see Figure 7 As shown, a guide bar 109 is provided inside the hollow cavity 106, and a telescopic transmission rack 608 is fixed on the guide bar 109. Limiting posts 611 are respectively provided on both sides of the moving side frame 402 facing away from and away from the flip pedal 401, and limiting wheels 612 that roll with the guide bar 109 are provided on the limiting posts 611. In this embodiment, the limiting posts 611 on both sides of the moving side frame 402 mainly limit the movement trajectory of the telescopic synchronous gear 607, ensuring that the telescopic synchronous gear 607 moves along the telescopic transmission rack 608, and ensuring that the moving side frame 402 moves along the telescopic transmission rack 608. This prevents the telescopic synchronous gear 607 from deviating from the movement trajectory of the telescopic transmission rack 608, thereby preventing the telescopic ladder 400 from tilting during telescopic movement, and ensuring the safety and reliability of the entire device during operation. The rolling engagement between the limiting wheels 612 and the guide bar 109 reduces friction, making the movement of the moving side frame 402 smoother and preventing jamming.

[0091] For clarity, the examples of the two sides of the moving side frame 402 facing and away from the flip-up pedal 401 are explained below. When the side ladder is installed on the right side of the vehicle body, the two sides of the moving side frame 402 facing and away from the flip-up pedal 401 are the front and rear sides of the moving side frame 402, respectively. Since both the front and rear moving side frames 402 have two sides facing and away from the flip-up pedal 401, it is clear that limiting posts 611 are provided on both sides of the moving side frame 402.

[0092] In some embodiments, see Figure 7 As shown, guide sleeves 613 are symmetrically arranged on both sides of the telescopic synchronous gear 607 along its axial direction. The guide sleeves 613 are mounted on the moving side frame 402. The drive shaft 610 passes through the guide sleeves 613 and is clearance-fitted with them. Two limiting posts 611 are fixed to the guide sleeves 613 respectively. The guide sleeves 613 provide support and guidance for the drive shaft 610. The telescopic synchronous gear 607 achieves a rotatable connection with the moving side frame 402 through the guide sleeves 613. At the same time, the limiting posts 611 are integrated into the guide sleeves 613, making the entire structure compact.

[0093] Optionally, see Figure 7 As shown, the guide rail 109 is a T-shaped slide rail, with limiting grooves 110 formed on both sides. The limiting wheel 612 is located within the limiting groove 110 and rolls against the inner wall of the limiting groove 110. This T-shaped slide rail and limiting wheel 612 cooperation structure has several advantages. First, the limiting grooves 110 on both sides of the T-shaped slide rail provide precise limiting for the limiting wheel 612, effectively preventing lateral displacement of the limiting wheel 612 during operation, thus ensuring operational stability. Ultimately, this ensures that the telescopic ladder 400 will not deviate during operation, preventing the tilting step 401 on the telescopic ladder 400 from tilting, and ensuring the safety and reliability of climbers. Second, the rolling cooperation reduces friction. Compared with the traditional sliding friction structure, this reduces energy loss, improves equipment operating efficiency, reduces component wear, extends the service life of the guide rail 109 and the limiting wheel 612, and reduces equipment maintenance costs.

[0094] In some embodiments, see Figure 5 and Figure 6The hollow cavity 106 is equipped with multiple guide rollers 108 for guiding the movement of the movable side frame 402. At least two guide rollers 108 roll in contact with the two surfaces of the movable side frame 402 facing towards and away from the vehicle body, respectively. The guide rollers 108 guide the movement of the telescopic ladder 400. This is because the movable side frame 402 needs to extend and retract, so there must be a gap between the movable side frame 402 and the inner wall of the hollow cavity 106 to avoid the movable side frame 402 from getting stuck or not moving smoothly. The existence of this gap can also cause unstable factors such as deviation and tilting during the movement of the movable side frame 402. Therefore, the guide rollers 108, the limiting post 611, and the limiting wheel 612 are set in the hollow cavity 106 to limit the movement of the movable side frame 402 in four directions.

[0095] For clarity, combined Figure 7 The example is as follows: When the side ladder is installed on the right side of the vehicle body, two limiting wheels 612 are respectively located on the front and rear sides of the moving side frame 402, while at least two guide rollers 108 are respectively located on the left and right sides of the moving side frame 402. That is, one guide roller 108 contacts the left side surface of the moving side frame 402 near the vehicle body, and one guide roller 108 contacts the right side surface of the moving side frame 402 away from the vehicle body. In this way, the movement trajectory of the moving side frame 402 is restricted from the front, rear, left, and right sides, ensuring that after the telescopic ladder 400 is extended, the moving side frame 402 remains parallel to the side ladder body 100, and the flipping step 401 remains horizontal and parallel to the fixed climbing bar 103. In this way, when the climber steps on the flipping step 401, the climber can step steadily, ensuring the safety of the climber.

[0096] Of course, side ladders can also be installed on the left and rear sides of the vehicle body, not just the right side.

[0097] In some embodiments, see Figure 18 As shown, a guide groove 403 for the guide roller 108 is provided on the surface of the moving side frame 402, which can ensure that the guide roller 108 rolls stably in the guide groove 403 and reduce the possibility of shaking and deviation.

[0098] Optionally, buffer blocks (not shown in the figure) are also provided at both ends of the guide groove 403. When the guide roller 108 rolls to a position close to both ends, the buffer blocks can prevent the guide roller 108 from sliding out of the guide groove 403.

[0099] In some embodiments, see Figure 6 , Figure 8 , Figure 9 and Figure 13The transmission sprocket assembly includes a main transmission sprocket 603, a telescopic guide sprocket 604, a movable sprocket 605, and a driven sprocket 606, all distributed along the transmission direction of the telescopic transmission chain 601. The main transmission sprocket 603 is exposed outside the hollow cavity 106, while the telescopic guide sprocket 604, movable sprocket 605, and driven sprocket 606 are all located inside the hollow cavity 106. The main transmission sprocket 603 is located at both ends of the transmission rod 602. The driven sprocket 606 is located at the lower end of the hollow cavity 106 away from the transmission rod 602. The telescopic guide sprocket 604 is located between the main transmission sprocket 603 and the driven sprocket 606. The movable sprocket 605 is coaxially mounted on the transmission shaft 610 with the telescopic synchronous gear 607. The telescopic guide sprocket 604 is disposed between the main drive sprocket 603 and the driven drive sprocket 606, specifically distributed along the movement trajectory of the telescopic drive chain. The telescopic guide sprocket 604 guides the telescopic drive chain, especially when the transmission trajectory is curved, the telescopic drive chain needs to bend along the movement trajectory under the guidance of the telescopic guide sprocket 604. This application achieves better force transmission and synchronization during transmission by coaxially arranging the telescopic synchronization gear 607 and the telescopic guide sprocket 604. When power is transmitted to the main drive sprocket 603 through the transmission rod 602, the main drive sprocket 603 drives the telescopic drive chain 601, which in turn drives the telescopic guide sprocket 604, the movable sprocket 605, and the driven drive sprocket 606 to rotate. The rotation of the movable sprocket 605 drives the transmission shaft 610 to rotate, which in turn drives the telescopic synchronization gear 607 to rotate along the telescopic drive rack 608, thus realizing the telescopic movement of the telescopic ladder 400.

[0100] The telescopic guide sprocket 604 is rotatably connected to the hollow cavity 106, while the movable sprocket 605 rotates with the telescopic transmission chain 601 and moves synchronously with the transmission shaft 610 and the movable side frame 402.

[0101] This method of combining the transmission sprocket assembly with the gear and rack telescopic assembly can effectively improve the stability and accuracy of the transmission. The main drive sprocket 603 is located at both ends of the drive rod 602, which can transmit power evenly and ensure that the force distribution is relatively uniform during transmission, reducing the possibility of excessive local force. The telescopic guide sprocket 604 and the telescopic synchronous gear 607 are coaxially set on the drive shaft 610. This layout helps to accurately guide the movement direction of the telescopic drive chain 601, so that the telescopic drive chain 601 can run along the predetermined trajectory during transmission, avoiding problems such as chain derailment or chain jamming. The secondary drive sprocket 606 is set at the lower end of the hollow cavity 106 away from the drive rod 602. It cooperates with the main drive sprocket 603 and the telescopic guide sprocket 604 to support and guide the telescopic drive chain 601 at different positions, further optimizing the transmission efficiency of the entire drive sprocket group. Moreover, this distributed arrangement can also adapt to the internal spatial structure of the hollow cavity 106, making reasonable use of space while reducing the possibility of mutual interference between the sprockets, thereby extending the service life of the entire drive sprocket group and improving the reliability and continuity of equipment operation.

[0102] In this application, the side ladder body 100 has an arc-shaped curved design, which allows the side ladder body 100 to adapt to the streamline of the curved surface of the vehicle body. The upper end of the side ladder body 100 extends to the roof of the vehicle through the curve, which facilitates the arrangement of the telescopic drive motor 614 and the sprocket transmission assembly. Therefore, the hollow cavity 106 also has an arc-shaped curved design. Multiple telescopic guide sprockets 604 are provided in the hollow cavity 106, which can accurately guide the direction of the telescopic transmission chain 601 and prevent the telescopic transmission chain 601 from being misaligned or loose during transmission.

[0103] This power transmission structure, which uses a sprocket to drive a rack and pinion, is compact. The components interact, are interconnected, and mutually restrictive. The telescopic synchronizing gear 607 can precisely synchronize its movement according to the rotational state of the movable sprocket 605, ensuring the stable and efficient operation of the entire sprocket assembly within the hollow cavity 106. This arrangement not only improves transmission efficiency but also reduces the risk of malfunctions due to improper fit of transmission components, laying a solid foundation for the stable operation of the entire device.

[0104] In some embodiments, see Figure 6 and Figure 13A chain drive guide groove 107 is provided within the hollow cavity 106. The telescopic guide sprocket 604, the driven sprocket 606, the movable sprocket 605, and the telescopic drive chain 601 are all positioned within the chain drive guide groove 107. This allows the telescopic drive chain 601 to travel along the chain drive guide groove 107, providing both limiting and guiding functions for the telescopic drive chain 601 and preventing interference between the telescopic drive chain 601 and the moving side frame 402 of the telescopic ladder 400. In particular, since the movable sprocket 605 is not fixed, the chain drive guide groove 107 limits its movement, preventing the risk of the movable sprocket 605 detaching from the telescopic drive chain 601.

[0105] The following embodiments will focus on the description of the flip drive mechanism that implements the flip pedal.

[0106] In some embodiments, see Figures 15 to 22 The flipping drive mechanism 700 includes a flipping drive motor 701 and a sprocket and chain transmission assembly; a mounting cavity 404 is provided in the moving side frame 402 along its length direction, the sprocket and chain transmission assembly is hidden in the mounting cavity 404, and the flipping drive motor 701 is installed at one end of the moving side frame 402 along its length direction; the sprocket and chain transmission assembly drives multiple flipping pedals 401 to flip synchronously. The advantages of this design are as follows: First, the sprocket and chain drive assembly is hidden inside the mounting cavity 404 of the moving side frame 402, which does not occupy too much extra space, does not affect the layout of other equipment in the vehicle, and does not affect the appearance visibility; Second, multiple flip pedals 401 can be flipped synchronously through the drive of the sprocket and chain drive assembly, which is simple and efficient to operate. Whether it is a single user or multiple people using the side ladder continuously, the pedals can be quickly unfolded and closed, further improving the convenience of vehicle use; Third, the sprocket and chain drive method can realize variable trajectory curve transmission, which can not only adapt to straight side ladders, but also to side ladders with a certain curvature that bends with the shape of the vehicle body, making it widely applicable.

[0107] For the vehicle side ladder provided in this application, when climbing is required, the telescopic ladder 400 moves downward and extends beyond the side ladder body 100 via the telescopic drive mechanism 600, and then multiple flipping steps 401 can be synchronously unfolded by the activation of the flipping drive mechanism 700; when climbing is not required, multiple flipping steps 401 can be synchronously closed onto the moving side frame 402 via the flipping drive mechanism 700, and then the telescopic ladder 400 moves upward via the telescopic drive mechanism 600 until the moving side frame 402 retracts back into the hollow cavity 106 of the fixed side frame 111.

[0108] Optionally, the flipping drive mechanism 700 can be driven by a gear and rack to realize the flipping action of the flipping pedal 401. In this case, the rack is installed in the mounting cavity 404, and the rack can be moved back and forth within a certain range in the mounting cavity 404 by an electric push rod or a cylinder, so as to realize the forward and reverse rotation of the gear connected to the flipping pedal 401, thereby achieving the purpose of synchronous flipping of the flipping pedal 401.

[0109] Otherwise, the flip drive mechanism 700 includes a flip drive motor 701 corresponding to each flip pedal 401. Each flip pedal 401 is directly and individually driven by the flip drive motor 701, and the flip pedal 401 can flip independently.

[0110] Among them, the flip drive motor 701 has a stepper motor that rotates clockwise and counterclockwise, so as to achieve the purpose of flipping the flip pedal 401 in different directions.

[0111] In some embodiments, see Figures 17 to 20 The sprocket and chain drive assembly includes a reversing drive sprocket 703, a reversing guide sprocket 704, a reversing driven sprocket 705, and a reversing drive chain 702. The reversing drive sprocket 703 is mounted on the main shaft of the reversing drive motor 701. The reversing driven sprocket 705 is mounted in the mounting cavity 404 at the end away from the reversing drive sprocket 703, and the reversing driven sprocket 705 and the reversing drive sprocket 703 are supported at both ends of the reversing drive chain 702. The reversing guide sprocket 704 is located between the reversing drive sprocket 703 and the reversing driven sprocket 705, and the reversing guide sprocket 704 drives the reversing pedal 401 to rotate via the reversing support shaft 708. The reversing guide sprocket 704 provides support and guidance for the reversing drive chain 702. In particular, the power of the reversing drive motor 701 is transmitted to the reversing support shaft 708 via the reversing guide sprocket 704, thereby causing the reversing pedal 401 to rotate.

[0112] Since a flip pedal 401 is also provided at the position corresponding to the flip driven sprocket 705, the flip driven sprocket 705 can also transmit power to the bottom flip pedal 401, so that the bottom flip pedal 401 and the other flip pedals 401 above it can flip and close synchronously.

[0113] The power transmission route of the flip pedal 401 is as follows: the power of the flip drive motor 701 is transmitted to the flip guide sprocket 704 via the rotation of the flip drive sprocket 703 and the flip drive chain 702, and then to the flip support shaft 708 via the flip guide sprocket 704. The flip pedal 401 is flipped in different directions by the rotation of the flip support shaft 708.

[0114] In this application, the sprocket and chain drive assembly that drives the flip pedal 401 to flip is located inside the moving side frame 402, and the telescopic drive chain 601 is located inside the fixed side frame 111. The two chains drive in parallel and do not affect each other.

[0115] In some embodiments, see Figure 20 A flipping transmission gear set is provided between the flipping pedal 401 and the flipping guide sprocket 704. The flipping transmission gear set includes a flipping transmission gear 707 and a flipping main gear 706 that mesh with each other. The flipping transmission gear 707 and the flipping guide sprocket 704 are coaxially mounted on the flipping drive shaft 709, which is installed in the mounting cavity 404. The flipping main gear 706 is mounted on the flipping support shaft 708.

[0116] The movement of the flip pedal 401 is transmitted to the flip transmission gear 707 via the flip guide sprocket 704. Since the flip transmission gear 707 meshes with the flip main gear 706, it drives the flip main gear 706 to rotate on the flip support shaft 708. This transmission method not only effectively transmits the flipping action of the flip pedal 401 but also, to a certain extent, reduces speed and increases torque, making the entire flip drive mechanism 700 operate more smoothly and reliably. In practical applications, the flip pedal 401 may undergo frequent flipping operations, and the structural design of the flip transmission gear set can well adapt to this high-frequency usage requirement, reducing wear and malfunctions caused by frequent movement and improving the service life of the entire device.

[0117] In some embodiments, see Figure 17 , Figure 21 and Figure 22 A connecting rod support assembly 800 is also provided between the flip pedal 401 and the moving side frame 402. One end of the connecting rod support assembly 800 is hinged to the flip pedal 401, and the other end is hinged to the moving side frame 402. When the flip pedal 401 is in the unfolded state, the connecting rod support assembly 800 is in the extended state and forms a triangular support with the flip pedal 401 and the moving side frame 402. When the flip pedal 401 is in the closed state, the connecting rod support assembly 800 is in the folded state.

[0118] The linkage support assembly 800 provides a stable and flexible connection between the flip pedal 401 and the moving side frame 402. The triangular support structure effectively distributes pressure when the flip pedal 401 is unfolded, enhancing the overall structural stability. This allows the flip pedal 401 to withstand greater weight or external forces without easily deforming or being damaged during use. When the flip pedal 401 needs to be closed, the linkage support assembly 800 folds smoothly without obstructing the closing action, effectively saving space and making the entire device more compact in the closed state, facilitating storage or transportation.

[0119] In some embodiments, see Figure 21 and Figure 22 The linkage support assembly 800 includes a first linkage 801 and a second linkage 804. The first end of the first linkage 801 is hinged to the inner side of the moving side frame 402 via a first shaft 802. The second end of the first linkage 801 is rotatably connected to the first end of the second linkage 804 via a second shaft 803. The second end of the second linkage 804 is provided with a limiting sliding hole 805. The second linkage 804 is hinged to the side of the flip pedal 401 via a third shaft 806 passing through the limiting sliding hole 805. When the flip pedal 401 is unfolded, the first linkage 801 rotates around the first shaft 802, and the first linkage 801 and the second linkage 804 rotate simultaneously around the second shaft 803. The second linkage 804 rotates around the third shaft 806 while sliding along the third shaft 806 until the first linkage 801 and the second linkage 804 are unfolded into an extended state, providing tension for the flip pedal 401 to bear the load and improving the stability of the flip pedal 401 under load.

[0120] When the flip pedal 401 is retracted, the first link 801 rotates in the opposite direction around the first axis 802, and the first link 801 and the second link 804 rotate in the opposite direction around the second axis 803 at the same time. The second link 804 rotates in the opposite direction around the third axis 806 while sliding in the opposite direction along the third axis 806, until the first link 801 and the second link 804 are folded into a retracted state, reducing the space occupied for easy storage or transportation.

[0121] In some embodiments, see Figure 21 and Figure 25 The flip support shaft 708 is positioned near the vehicle body when the flip pedal 401 is in the unfolded state; the third shaft 806 is positioned away from the vehicle body when the flip pedal 401 is in the unfolded state; the first shaft 802 is located above the unfolded flip pedal 401; and the linkage support assembly 800 provides tension to the flip pedal 401. This design allows the flip pedal 401 to flip outwards away from the vehicle body when it is flipped relative to the vehicle body. Since the side ladder is installed close to the outer side of the vehicle body, there is not much space between the flip pedal 401 and the side of the vehicle body. However, by arranging the flip support shaft 708 near the vehicle body, the flip pedal 401 can flip outwards around the flip support shaft 708. Furthermore, the design of the connection points of the first linkage 801 and the second linkage 804 ensures that the load-bearing point of the two linkages after unfolding is at the end of the flip pedal 401 away from the vehicle body. This arrangement greatly improves the stability of the flip pedal 401 under load.

[0122] Explained, the position of the third shaft 806 is relative to the same flip pedal 401. When the flip pedal is in the unfolded state, the center lines connecting the first shaft 802, the third shaft 806 connected to the same flip pedal 401, and the flip support shaft 708 form a triangular support structure (see...). Figure 21 This orientation design places the triangular support structure above the flip pedal 401, allowing the first link 801 and the second link 804 to exert a pulling force on the flip pedal after unfolding. Because this pulling force is a traction force, compared to the upward pushing action of the support force, the pulling force is more stable and reliable for the same material and size of the link support assembly 800. When the flip pedal is in the closed position, the first link 801 and the second link 804 are folded, and the first shaft 802, the second shaft 803, the third shaft 806, and the center line connecting them to the flip support shaft 708 are aligned (see...). Figure 22 ).

[0123] In some embodiments, see Figure 16 and Figure 21 The flip pedal 401 has an anti-slip structure 405 on its foot surface; when the flip pedal 401 is closed, the anti-slip structure 405 faces the side of the vehicle body. When the flip pedal 401 needs to be unfolded for use, it can provide better anti-slip performance for the climber's feet. Especially in rainy or snowy weather, the flip pedal 401 will be wet and slippery or very slippery due to freezing, making it easy for climbers to slip when stepping on it. Therefore, the anti-slip structure 405 can provide users with a stable footing experience, thereby improving the safety and reliability of use.

[0124] In some embodiments, see Figure 16 and Figure 21 The anti-slip structure 405 is a toothed texture or array of raised bumps provided on the flip pedal 401. These anti-slip structures 405 can increase the frictional resistance of the climber's feet, thereby achieving the purpose of anti-slip. The anti-slip structure 405 can also be an anti-slip pad with different patterns pasted on the step surface of the flip pedal 401.

[0125] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0126] Based on the same inventive concept, this application also provides a vehicle, including the aforementioned vehicle side ladder, see... Figure 32 and Figure 33 .

[0127] The vehicle provided in this embodiment, by installing this side ladder that can achieve angle tilt adjustment, allows for flexible adjustment of the tilt angle of the side ladder according to the shape and usage requirements of different vehicle models, thereby improving the vehicle's versatility and adaptability. At the same time, the device has a compact structure, is easy to install, and is suitable for various vehicle models, reducing resource waste caused by redundant material configuration and human resource waste caused by repetitive labor.

[0128] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A vehicle side ladder, characterized in that, include: A side ladder body (100) has a lower mounting point (101) at its lower end and an upper mounting point (202) at its upper end; and A tilting drive mechanism is mounted on the vehicle body and connects the upper mounting point (202) and / or the lower mounting point (101); when the tilting drive mechanism is selected to connect to the upper mounting point (202), the lower mounting point (101) is hinged to the vehicle body; when the tilting drive mechanism is selected to connect to the lower mounting point (101), the upper mounting point (202) is hinged to the vehicle body. The tilting drive mechanism is hinged to the upper mounting point (202) and / or the lower mounting point (101) to push the side ladder body (100) away from or towards the vehicle body to adapt to the outer contour of the vehicle body.

2. The vehicle side ladder as described in claim 1, characterized in that, The tilting drive mechanism is mounted on the roof of the vehicle and includes a linear actuator (230) and a movable plate (300). The linear actuator (230) has a support rod connected to the movable plate (300), and the movable plate (300) is hinged to the upper mounting point (202). The support rod pushes the side ladder body (100) to tilt through the movable plate (300).

3. The vehicle side ladder as described in claim 2, characterized in that, The side ladder body (100) is provided with a flipping pedal (401). The flipping pedal (401) is flipped in the direction away from the vehicle body to unfold, or flipped towards the vehicle body to close, by a flipping drive mechanism (700).

4. The vehicle side ladder as described in claim 3, characterized in that, The side ladder body (100) includes a fixed ladder and a telescopic ladder (400). The fixed ladder includes a fixed side frame (111) and a fixed climbing rod (103) connected to the fixed side frame (111). The fixed side frame (111) has a hollow cavity (106) extending along its length. The upper mounting point (202) and the lower mounting point (101) are located at the upper and lower ends of the fixed side frame (111). The telescopic ladder (400) includes a movable side frame (402) and a climbing rod (103) connected to the movable side frame (402). The flip pedal (401); the movable side frame (402) is hidden in the hollow cavity (106) by the telescopic drive mechanism (600). When the movable side frame (402) extends out of the hollow cavity (106), the flip pedal (401) flips away from the movable side frame (402) in an unfolded state by the flip drive mechanism (700); when the movable side frame (402) retracts into the hollow cavity (106), the flip pedal (401) flips toward the fixed side frame (111) in a closed state.

5. The vehicle side ladder as described in claim 4, characterized in that, The telescopic drive mechanism (600) includes a telescopic drive motor (614), a sprocket transmission assembly, and a rack and pinion telescopic assembly. The telescopic drive motor (614) is mounted on the movable plate (300), and the movable plate (300) is connected to the upper end of the fixed side frame (111). The sprocket transmission assembly includes a transmission gear set, a transmission rod (602), a transmission sprocket set, and a telescopic transmission chain (601). The transmission sprocket set is partially disposed in the hollow cavity (106), and the telescopic transmission chain (601) is wound around the transmission sprocket set. The transmission rod (602) is mounted on the movable plate (300), and both ends of the transmission rod (602) are connected to the transmission sprocket set. The transmission gear set is connected between the telescopic drive motor (614) and the transmission rod (602); The power of the telescopic drive motor (614) is transmitted to the transmission rod (602) through the transmission gear set. The transmission rod (602) drives the telescopic transmission chain (601) through the transmission sprocket set. The gear and rack telescopic assembly rotates synchronously with the transmission sprocket set through the transmission shaft (610), causing the telescopic ladder (400) to extend or retract.

6. The vehicle side ladder as described in claim 5, characterized in that, The gear and rack telescopic assembly includes a telescopic synchronous gear (607) and a telescopic transmission rack (608) meshing with the telescopic synchronous gear (607). The telescopic transmission rack (608) is disposed in the hollow cavity (106). The telescopic synchronous gear (607) is disposed on the moving side frame (402). The telescopic synchronous gear (607) is connected to the transmission sprocket group through the transmission shaft (610) and rotates synchronously with the transmission sprocket group, driving the telescopic ladder (400) to move along the telescopic transmission rack (608).

7. The vehicle side ladder as described in claim 6, characterized in that, The transmission sprocket assembly includes a main transmission sprocket (603), a telescopic guide sprocket (604), a movable sprocket (605), and a driven transmission sprocket (606) distributed along the transmission direction of the telescopic transmission chain (601); the main transmission sprocket (603) is exposed outside the hollow cavity (106), and the telescopic guide sprocket (604), the movable sprocket (605), and the driven transmission sprocket (606) are... All are disposed within the hollow cavity (106); the main drive sprocket (603) is disposed at both ends of the drive rod (602); the driven sprocket (606) is disposed at the lower end of the hollow cavity (106) away from the drive rod (602); the telescopic guide sprocket (604) is disposed between the main drive sprocket (603) and the driven sprocket (606); the movable sprocket (605) and the telescopic synchronous gear (607) are coaxially disposed on the drive shaft (610).

8. The vehicle side ladder as described in any one of claims 4-7, characterized in that, The flipping drive mechanism (700) includes a flipping drive motor (701) and a sprocket and chain transmission assembly; a mounting cavity (404) is provided in the moving side frame (402) along its length direction, the sprocket and chain transmission assembly is hidden in the mounting cavity (404), and the flipping drive motor (701) is installed at one end of the moving side frame (402) along its length direction; the sprocket and chain transmission assembly drives multiple flipping pedals (401) to flip synchronously.

9. The vehicle side ladder as described in claim 8, characterized in that, A connecting rod support assembly (800) is also provided between the flip pedal (401) and the moving side frame (402). One end of the connecting rod support assembly (800) is hinged to the flip pedal (401), and the other end is hinged to the moving side frame (402). When the flip pedal (401) is in the unfolded state, the connecting rod support assembly (800) is in the extended state and forms a triangular support with the flip pedal (401) and the moving side frame (402). When the flip pedal (401) is in the closed state, the connecting rod support assembly (800) is in the folded state.

10. A vehicle, characterized in that, Including the vehicle side ladder as described in any one of claims 1-9.

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