Vehicle side ladder stand and vehicle

Abstract

The utility model provides a vehicle side ladder stand and a vehicle, and belongs to the technical field of vehicles, the vehicle side ladder stand comprises a side ladder stand body and an extension ladder, the side ladder stand body comprises a fixed side frame and a fixed climbing rod connected to the fixed side frame; a hollow cavity extending in the length direction of the fixed side frame is formed in the fixed side frame. The extension ladder comprises a movable side frame and a turnover pedal connected to the movable side frame; and the movable side frame is hidden in the hollow cavity through a telescopic driving mechanism. Due to the fact that only when the extension ladder is used, the extension ladder stretches out and the turnover pedal is unfolded, when the extension ladder is not used, the movable side frame of the extension ladder can be hidden in the hollow cavity of the fixed side frame, and the turnover pedal is turned over to be in a folded state, the turnover pedal and the overall design style of a vehicle can be designed in a coordinated mode, and personalized design can be achieved; the appearance integrity and brand high-end presentation can be obviously improved; and the movable side frame is not exposed, so that the appearance of the vehicle body is neat, the appearance quality of the whole vehicle is improved, and the brand value and the market competitiveness of the whole vehicle can be improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to vehicle technical field, concretely relates to a vehicle side ladder and vehicle. BACKGROUND

[0002] The automobile side ladder is widely applied on the camping car, off -road vehicle, engineering vehicle, fire vehicle, police car, ambulance, tank car and various special vehicles, and its main purpose is to facilitate the user to get on and off the roof, thereby carrying out the operation such as loading, unloading goods or using the roof luggage rack, to satisfy the demand of climbing the roof for travelling, working, rescue and the like. Usually, the vehicle chassis needs to be configured with the side ladder, and in order to facilitate personnel to climb, part of the side ladder is provided with a movable ladder or a slide. When using, the movable ladder can be opened downward to extend the overall length of the side ladder, and when not using, the movable ladder is retracted, and the vehicle driving is not affected.

[0003] Since the side ladder is installed outside the vehicle body, the telescopic side ladder has some defects, which are as follows:

[0004] (1) Insufficient appearance coordination: the movable ladder or the slide is exposed outside the vehicle body, and the structure is complex and messy. The protruding climbing rod and the surface of the vehicle body form a geometric misalignment, which is not coordinated with the overall design style of the vehicle, directly affects the visual effect of the overall vehicle, and significantly reduces the overall appearance and brand high-end presentation.

[0005] (2) Safety problem: the side ladder is generally installed close to the outside of the vehicle body, and the gap between the climbing rod and the vehicle body is small, which cannot provide effective support for the climber in accordance with the ergonomics. The foot center of gravity cannot effectively contact the climbing rod during the climbing process, and the center of gravity of the climber cannot be well supported, especially in rainy and snowy weather. Since the climber's toes contact the climbing rod, the foot is unstable, and the risk of slipping and falling of the climber is easily caused. INVENTION CONTENTS

[0006] The utility model embodiment provides a kind of vehicle side ladder and vehicle, to solve the appearance quality and the climbing safety problem of current side ladder.

[0007] To achieve the above object, the technical scheme adopted by the utility model is as follows: a kind of vehicle side ladder is provided, comprising: side ladder body and telescopic ladder, side ladder body includes fixed side frame and fixed climbing rod connected to the fixed side frame;The fixed side frame has a hollow cavity extending along its length direction;Telescopic ladder includes movable side frame and turnover pedal connected to the movable side frame;The movable side frame is hidden in the hollow cavity by telescopic drive mechanism, when the movable side frame extends from the hollow cavity, the turnover pedal is turned over by turnover drive mechanism in the direction away from the movable side frame and presents unfolded state;When the movable side frame is retracted in the hollow cavity, the turnover pedal is turned over towards the fixed side frame and presents folding state.

[0008] With reference to the first aspect, in an implementable mode, the telescopic driving mechanism comprises a telescopic driving motor, a chain gear transmission assembly and a gear rack telescopic assembly, the telescopic driving motor is installed on a fixed plate, and the fixed plate is installed on the upper end of the fixed side frame;

[0009] The chain gear transmission assembly comprises a transmission gear set, a transmission rod, a transmission sprocket set and a telescopic transmission chain; the transmission sprocket set is partially arranged in the hollow cavity, the telescopic transmission chain is wound on the transmission sprocket set; the transmission rod is installed on the fixed plate, and both ends of the transmission rod are connected to the transmission sprocket set; the transmission gear set is connected between the telescopic driving motor and the transmission rod; the power of the telescopic driving motor is transmitted to the transmission rod through the transmission gear set, and the transmission rod drives the telescopic transmission chain transmission through the transmission sprocket set;

[0010] The gear rack telescopic assembly rotates synchronously with the transmission sprocket set through a transmission shaft to drive the telescopic ladder to move. The flexible transmission characteristics of the telescopic transmission chain and the accurate guidance of the gear rack are combined to flexibly adjust the movement posture of the telescopic ladder according to the side climbing ladder curve. This not only ensures the normal operation of the telescopic ladder under complex trajectories, but also reduces the additional resistance generated due to trajectory changes, reduces the load of the driving motor, and prolongs the service life of the driving mechanism.

[0011] With reference to the first aspect, in an implementable mode, the gear rack telescopic assembly comprises a telescopic synchronous gear and a telescopic transmission rack meshing with the telescopic synchronous gear, and the telescopic transmission rack is arranged in the hollow cavity; the telescopic synchronous gear is arranged on the movable side frame, the telescopic synchronous gear is connected to the transmission sprocket set through a transmission shaft and rotates synchronously with the transmission sprocket set to drive the telescopic ladder to move along the telescopic transmission rack. The gear rack has good self-locking performance to provide reliable support for the unfolded state of the telescopic ladder.

[0012] With reference to the first aspect, in an implementable mode, a guide strip is arranged in the hollow cavity, the telescopic transmission rack is arranged on the guide strip, the movable side frame is provided with a limiting column on each side facing and away from the turnover step, and a limiting wheel rolling with the guide strip is arranged on the limiting column; guide sleeves are symmetrically arranged on both sides of the telescopic synchronous gear in the axial direction, the guide sleeves are arranged on the movable side frame, the transmission shaft passes through the guide sleeves and gap-fits with the guide sleeves, and the two limiting columns are fixed on the guide sleeves. The rolling fit of the limiting wheel and the guide strip reduces the friction force, so that the movement of the movable side frame is smoother, and the occurrence of jamming is avoided. The guide sleeves have a supporting and guiding effect on the transmission shaft, the telescopic synchronous gear is rotationally connected to the movable side frame through the guide sleeves, and the limiting columns are integrated on the guide sleeves, so that the whole structure is compact.

[0013] With reference to the first aspect, in an implementable mode, the transmission sprocket set comprises a main transmission sprocket, a telescopic guide sprocket, a movable sprocket and a slave transmission sprocket which are arranged in the transmission direction of the telescopic transmission chain; the main transmission sprocket is exposed outside the hollow cavity, and the telescopic guide sprocket, the movable sprocket and the slave transmission sprocket are arranged inside the hollow cavity; the main transmission sprocket is arranged at both ends of the transmission rod; the slave transmission sprocket is arranged at the lower end of the hollow cavity away from the transmission rod; the telescopic guide sprocket is arranged between the main transmission sprocket and the slave transmission sprocket; and the movable sprocket is coaxially arranged on the transmission shaft with the telescopic synchronous gear. This power transmission structure of the transmission sprocket set driving the gear rack set is compact in structure, and the side climbing ladder body can adapt to the streamline of the curved surface of the vehicle body to realize variable trajectory power transmission.

[0014] With reference to the first aspect, in an implementable mode, the turnover driving mechanism comprises a turnover driving motor and a sprocket and chain transmission assembly; a mounting cavity is arranged in the length direction of the movable side frame, the sprocket and chain transmission assembly is hidden in the mounting cavity, and the turnover driving motor is installed at one end of the length direction of the movable side frame; the sprocket and chain transmission assembly drives a plurality of turnover pedals to synchronously turn over.

[0015] With reference to the first aspect, in an implementable mode, the sprocket and chain transmission assembly comprises a turnover driving sprocket, a turnover guide sprocket, a turnover driven sprocket and a turnover driving chain; the turnover driving sprocket is installed on the main shaft of the turnover driving motor; the turnover driven sprocket is installed at one end of the mounting cavity away from the turnover driving sprocket, and the turnover driven sprocket and the turnover driving sprocket are arranged at two ends of the turnover driving chain; the turnover guide sprocket is located between the turnover driving sprocket and the turnover driven sprocket, and the turnover guide sprocket drives the turnover pedal to turn over through a turnover support shaft. This design transmits the power of chain transmission to the turnover pedal through the turnover guide sprocket.

[0016] With reference to the first aspect, in an implementable mode, a connecting rod support assembly is further arranged between the turnover pedal and the movable side frame, one end of the connecting rod support assembly is hinged to the turnover pedal, and the other end is hinged to the movable side frame; when the turnover pedal is in the unfolded state, the connecting rod support assembly is in the stretched state and forms a triangular support with the turnover pedal and the movable side frame; and when the turnover pedal is in the folded state, the connecting rod support assembly is in the folded state. The connecting rod support assembly provides support for the weight bearing of the unfolded turnover pedal.

[0017] With the first aspect, in an implementable manner, the connecting rod supporting assembly comprises a first connecting rod and a second connecting rod, a first end of the first connecting rod is hingedly connected to an inner side surface of the movable side frame through a first shaft, a second end of the first connecting rod is rotationally connected to a first end of the second connecting rod through a second shaft, a second end of the second connecting rod is provided with a limiting sliding hole, and the second connecting rod is hingedly connected to a side surface of the turnover pedal through a third shaft penetrating through the limiting sliding hole; when the turnover pedal is unfolded, the first connecting rod rotates around the first shaft, the first connecting rod and the second connecting rod rotate around the second shaft at the same time, and the second connecting rod rotates around the third shaft while sliding along the third shaft through the limiting sliding hole, so that the first connecting rod and the second connecting rod are unfolded to an extended state to provide a pulling force for supporting the turnover pedal, and the stability of supporting the turnover pedal is improved. When the turnover pedal is folded, the first connecting rod reversely rotates around the first shaft, the first connecting rod and the second connecting rod reversely rotate around the second shaft at the same time, and the second connecting rod reversely rotates around the third shaft while reversely sliding along the third shaft, so that the first connecting rod and the second connecting rod are folded to a contracted state, the occupied space is reduced, and the storage or transportation operation is facilitated.

[0018] Compared with the prior art, the vehicle side ladder has the beneficial effects that:

[0019] First, the appearance is consistent with the vehicle body. The application discards the side ladder based on the exposed movable ladder and the slide ladder, and a hollow cavity is arranged in the fixed side frame. The telescopic ladder can be hidden in the hollow cavity. When not in use, the telescopic ladder is retracted into the side ladder body, and only the side ladder body is exposed when installed on the vehicle body, so that the appearance of the vehicle body is neat and the appearance quality of the whole vehicle is improved. Meanwhile, the pedal turnover is used for unfolding and folding. When climbing is needed, the telescopic ladder is extended, the turnover pedal is driven by the turnover driving mechanism to turn in the direction away from the vehicle body to an unfolded state, and the turnover pedal is presented as a ladder step in front of the climber, so that the climber can climb up step by step. When climbing is not needed, the turnover pedal is driven by the turnover driving mechanism to turn towards the fixed side frame to a folded state. At this time, the outer surface of the turnover pedal can be perfectly connected with the outer contour of the vehicle body, or the appearance and individuality can be improved by design, effectively solving the problem that the existing side ladder is conspicuous and causes poor visibility of the whole vehicle, and improving the appearance of the whole vehicle, so that the value of the high-end brand of the whole vehicle can be improved.

[0020] Secondly, when the telescopic ladder is retracted and the turnover pedal is in the folded state, the turnover pedal can also shield the fixed climbing rod on the fixed side frame, so that the fixed climbing rod is also not exposed. On the appearance, only the outer surface of the fixed side frame and the turnover pedal is visible, and the visibility of the appearance of the whole vehicle is further improved.

[0021] Third, in terms of safety, the flip pedal presents a larger stepping surface than the climbing pole when it is unfolded, which can provide more stable support for the climber, especially in rainy and snowy weather. Because the contact area of the foot and the flip pedal is larger, the risk of the climber slipping and falling can be greatly reduced.

[0022] Fourth, avoid safety hazards during driving. When in use, the telescopic ladder is extended, and the overall length of the side climbing ladder is lengthened. When not in use, the telescopic ladder is retracted into the side climbing ladder body, and the overall length of the side climbing ladder is shortened. For the vehicle, the equipment can be more reasonably arranged in the limited space, the space is greatly saved, the side climbing ladder occupies too much external space, and the safety hazards caused by the extension of the side climbing ladder during driving, such as scratching caused by collision with the ground or roadside objects, and the safety hazards of driving are reduced.

[0023] Fifth, the design of the telescopic ladder also improves the versatility of the side climbing ladder for vehicles of different heights.

[0024] Sixth, simple and convenient installation and disassembly. The movable side frame can be retracted into the hollow cavity of the fixed side frame through the telescopic driving mechanism, and only the side climbing ladder body is exposed and visible. When installing, the side climbing ladder body only needs to be installed on the vehicle body at two points, and the installation and disassembly of the side climbing ladder are simple and convenient.

[0025] Secondly, the utility model embodiment further provides a vehicle comprising the side climbing ladder.

[0026] The utility model embodiment further provides a vehicle. Because the telescopic ladder is extended and the flip pedal is unfolded only when in use, the movable side frame of the telescopic ladder can be hidden in the hollow cavity of the fixed side frame, and the flip pedal is turned over to the folding state. This side climbing ladder can design the flip pedal and the overall design style of the vehicle in coordination, can also be personalized, can significantly improve the overall appearance and brand high-end presentation. At the same time, it is also beneficial to the stable and reliable climbing of the climber, and improves the safety of the climber. Moreover, because the movable side frame is not exposed, the appearance of the vehicle body is neat, the appearance quality of the whole vehicle is improved, and therefore the brand value and market competitiveness of the whole vehicle can be improved. DRAWINGS

[0027] Figure 1 The utility model embodiment provides a side climbing ladder for vehicle three-dimensional structure schematic diagram (appearance visible state);

[0028] Figure 2 The utility model embodiment provides a side climbing ladder for vehicle three-dimensional structure schematic diagram (exhibition towards the inner side of the vehicle body);

[0029] Figure 3 The utility model embodiment provides a side climbing ladder for vehicle three-dimensional structure schematic diagram (exhibition towards the inner side of the vehicle body);

[0030] Figure 4 A schematic diagram of the main structure (visible plan view) of the vehicle side ladder provided in an embodiment of this utility model.

[0031] Figure 5 For along Figure 4 Cross-sectional view of line AA in the middle;

[0032] Figure 6 For along Figure 4 Cross-sectional view of the middle BB line;

[0033] Figure 7 For along Figure 4 Cross-sectional view of the CC line;

[0034] Figure 8 A three-dimensional structural diagram of a vehicle side ladder provided for an embodiment of this utility model (showing the installation position of the telescopic drive motor and transmission rod in the telescopic drive mechanism).

[0035] Figure 9 A three-dimensional structural diagram of a vehicle side ladder provided for an embodiment of this utility model (showing the positional relationship and cooperation between the telescopic drive mechanism and the telescopic ladder).

[0036] Figure 10 A three-dimensional structural diagram of the side ladder body provided in an embodiment of this utility model (visible appearance).

[0037] Figure 11 A three-dimensional structural diagram of the side ladder body provided in this embodiment of the utility model (showing the inside of the vehicle).

[0038] Figure 12 A schematic diagram of the exterior structure of the side ladder body provided in this embodiment of the utility model (visible appearance).

[0039] Figure 13 For along Figure 12 Cross-sectional view of the DD line;

[0040] Figure 14 For along Figure 12 Cross-sectional view of the EE line;

[0041] Figure 15 A three-dimensional structural diagram (visible appearance) of the telescopic ladder provided in an embodiment of this utility model.

[0042] Figure 16 A three-dimensional structural diagram of the telescopic ladder provided in an embodiment of this utility model (showing the inside of the vehicle).

[0043] Figure 17A main view structural schematic diagram (appearance visible state) of the telescopic ladder provided by the embodiment of the utility model;

[0044] Figure 18 For along Figure 17 The sectional view structure diagram of F-F line;

[0045] Figure 19 For along Figure 17 The sectional view structure diagram of G-G line;

[0046] Figure 20 For along Figure 17 The sectional view structure diagram of H-H line;

[0047] Figure 21 A three-dimensional structure schematic diagram of the unfolded flip pedal of the telescopic ladder provided by the embodiment of the utility model;

[0048] Figure 22 A three-dimensional structure schematic diagram of the folded flip pedal of the telescopic ladder provided by the embodiment of the utility model (showing the installation position of the connecting rod supporting assembly);

[0049] Figure 23 A three-dimensional structure schematic diagram of the decorative cover provided by the embodiment of the utility model;

[0050] Figure 24 A three-dimensional structure schematic diagram of the side ladder installed on the vehicle body provided by the utility model (telescopic ladder retracted state);

[0051] Figure 25 A three-dimensional structure schematic diagram of the side ladder installed on the vehicle body provided by the utility model (telescopic ladder extended state);

[0052] Mark explanation:

[0053] 100, side ladder body; 101, lower mounting seat; 102, lower fixing seat; 103, fixed climbing rod; 104, lower mounting shaft; 105, guide sliding hole; 106, hollow cavity; 107, chain transmission guide groove; 108, guide roller; 109, guide strip; 110, limiting groove; 111, fixed side frame; 200, upper mounting seat; 201, protective cover; 300, fixing plate; 400, extension ladder; 401, turnover pedal; 402, movable side frame; 403, guide groove; 404, accommodation cavity; 405, anti-skid structure; 500, decorative cover; 501, shaped hole; 600, extension driving mechanism; 601, extension transmission chain; 602, transmission rod; 603, main transmission sprocket; 604, extension guide sprocket; 605, movable sprocket; 606, slave transmission sprocket; 607, extension synchronization gear; 608, extension transmission rack; 609, limiting stopper; 610, transmission shaft; 611, limiting column; 612, limiting wheel; 613, guide sleeve; 614, extension driving motor; 615, extension main gear; 616, extension slave gear; 700, turnover driving mechanism; 701, turnover driving motor; 702, turnover driving chain; 703, turnover driving sprocket; 704, turnover guide sprocket; 705, turnover driven sprocket; 706, turnover main gear; 707, turnover transmission gear; 708, turnover support shaft; 709, turnover driving shaft; 800, connecting rod support assembly; 801, first connecting rod; 802, first shaft; 803, second shaft; 804, second connecting rod; 805, limiting sliding hole; 806, third shaft. DETAILED DESCRIPTION

[0054] In order to make the technical problems, technical solutions and beneficial effects of the utility model clearer, the utility model will be described in further detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and do not limit the utility model.

[0055] Please refer to Figures 1 to 25 , the utility model provides a vehicle side ladder will be described. The vehicle side ladder, including side ladder body 100 and extension ladder 400, side ladder body 100 includes fixed side frame 111 and the fixed climbing rod 103 connected to the fixed side frame 111, the fixed side frame 111 has hollow cavity 106 extending along its length direction, wherein the upper and lower ends of side ladder body 100 are provided with mounting points respectively, so as to install the side ladder on the vehicle body as a whole.

[0056] The telescopic ladder 400 comprises a movable side frame 402 and a turnover pedal 401 connected to the movable side frame 402; the movable side frame 402 is hidden in the hollow cavity 106 through a telescopic driving mechanism 600, when the movable side frame 402 is extended out of the hollow cavity 106, the turnover pedal 401 is turned to an unfolded state by a turnover driving mechanism 700 in a direction away from the movable side frame 402 (see Figure 3 ); when the movable side frame 402 is retracted into the hollow cavity 106, the turnover pedal 401 is turned to a folded state towards the fixed side frame 111 (see Figure 1 ).

[0057] The opposite inner side 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 turnover pedal 401 are connected to the movable side frame 402, and need to move synchronously with the movable side frame 402, and the guide sliding holes 105 are arranged to enable the turnover pedal 401 to move with the movable side frame 402 without obstruction.

[0058] The guide sliding holes 105 arranged on the opposite inner side surfaces of the fixed side frame 111 provide guidance for the telescopic movement of the telescopic ladder 400. Since the movable side frame 402 needs to be hidden inside the fixed side frame 111, and the turnover pedal 401 for the climber to climb is also arranged on the telescopic ladder 400, the turnover pedal 401 cannot be hidden in the hollow cavity 106, therefore, through the arrangement of the guide sliding holes 105, the telescopic movement of the telescopic ladder 400 as a whole can be ensured, and this design can ensure that the telescopic ladder 400 moves in the correct direction during the telescopic movement, avoiding phenomena such as deviation and jamming, thereby ensuring the smoothness of the telescopic movement, prolonging the service life of the side climbing ladder, and making it more convenient and fast for the user to operate the telescopic ladder 400.

[0059] In combination Figures 1 to 6 , a decorative cover 500 is further arranged at the lower end of the fixed side frame 111, the decorative cover 500 is provided with a type hole 501 matching 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 perspective view of the decorative cover 500 is given.

[0060] Explanatorily, when the turnover pedal 401 is in the unfolded state, it constitutes a ladder step to facilitate the climber to climb; when unfolded, the turnover pedal 401 is generally in a horizontal state (see Figure 3), especially the tread surface of the flip pedal 401 is in a horizontal state, and the movable side frame 402 is attached to the shape of the vehicle body. Due to the limitation of the shape of the vehicle body, the movable side frame 402 is generally arranged straight up and straight down, and can also be arranged to tilt towards the vehicle body. Therefore, according to the mounting mode of the movable side frame 402, the angle between the tread surface of the flip pedal 401 and the movable side frame 402 is generally 90-100 degrees when the flip pedal 401 is unfolded, so that the climber will not fall backward when climbing. Figure 1 When the flip pedal 401 is in a folded state (see

[0061] It also needs to be explained that the number of flip pedals 401 is generally multiple, and the number of flip pedals 401 is not limited in this application, which is considered to be applicable even if there is only one flip pedal 401.

[0062] Compared with the prior art, the vehicle side ladder provided by the utility model has the beneficial effects that:

[0063] First, the appearance is consistent with the vehicle body (see Figure 24 The application discards the side ladder based on the exposed movable ladder and slide ladder, and sets 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 is retracted into the side ladder body 100, and when installed on the vehicle body, only the side ladder body 100 is exposed, so that the appearance of the vehicle body is neat and the appearance quality of the whole vehicle is improved. Meanwhile, the pedal flipper can be flipped and unfolded. When climbing is needed, the telescopic ladder 400 is extended, the flip pedal 401 is driven by the flip drive mechanism 700 to flip in the direction away from the vehicle body to the unfolded state, and the flip pedal 401 is in the form of a ladder step in front of the climber, so that the climber can climb step by step. When climbing is not needed, the flip pedal 401 is flipped towards the fixed side frame 111 to the folded state by the flip drive mechanism 700, and the telescopic ladder 400 is driven upwards by the telescopic drive mechanism 600 to hide in the hollow cavity 106. At this time, the outer surface of the flip pedal 401 can be perfectly connected with the outer contour of the vehicle body, or the appearance can be designed to improve the appearance and individual needs, effectively solving the problem of poor appearance visibility of the existing side ladder, improving the overall appearance of the vehicle, and thus improving the value of the high-end brand of the whole vehicle.

[0064] Secondly, when the telescopic ladder 400 is retracted and the folding pedal 401 is in the folded state, the folding pedal 401 can also shield the fixed climbing rod 103 on the fixed side frame 111, so that the fixed climbing rod 103 is also not exposed; only the outer surface of the fixed side frame 111 and the folding pedal 401 can be seen, which further improves the visibility of the overall appearance of the vehicle.

[0065] Third, in terms of safety (see Figure 25 ), the folding pedal 401 presents a larger stepping surface than the climbing rod when unfolded, which can provide more stable support for the climber, especially in rainy and snowy weather, because the contact area of the foot with the folding pedal 401 is larger, so the risk of slipping and falling of the climber can be greatly reduced.

[0066] Fourth, to avoid safety hazards during driving. When in use, the telescopic ladder 400 is extended to lengthen the overall length of the side climbing ladder, and when not in use, the telescopic ladder 400 is retracted into the side climbing ladder body 100, the overall length of the side climbing ladder is shortened, which can more reasonably layout the equipment in limited space for the vehicle, greatly saving space, avoiding the side climbing ladder occupying too much external space, thereby reducing the safety hazards that may be caused by the extension of the side climbing ladder during driving, such as scratching caused by collision with the ground or roadside objects, and the safety hazards of driving not smoothly.

[0067] Fifth, the design of the telescopic ladder 400 also improves the versatility of the side climbing ladder for use on vehicles of different heights.

[0068] Sixth, simple and convenient installation and disassembly. The movable side frame 402 can be retracted into the hollow cavity 106 of the fixed side frame 111 through the telescopic driving mechanism 600, only the side climbing ladder body 100 is exposed and visible, and when installing, only the side climbing ladder body 100 needs to be installed on the vehicle body at two points, so that the installation and disassembly of the side climbing ladder are simple and convenient.

[0069] In combination with Figure 1 and Figure 2 , Figure 24 and Figure 25It is understood that the mounting point of the upper end of the side ladder body 100 is provided with an upper mounting seat 200, the mounting point of the lower end is provided with a lower mounting seat 101, the corresponding upper fixing seat and lower fixing seat 102 are provided on the vehicle body, the lower end of the side ladder body 100 is fixed on the vehicle body through the lower mounting shaft 104, the lower mounting shaft 104 passes through the lower mounting seat 101 and the lower fixing seat 102; the upper mounting seat 200 can be fixed on the roof or the side of the vehicle body. Among them, since the upper end of the side ladder body 100 is also provided with the fixed plate 300 of the telescopic drive mechanism 600, the fixed plate 300 is fixed on the upper mounting seat 200. Due to the telescopic drive mechanism 600, the movable side frame 402 can be retracted into the hollow cavity 106 of the fixed side frame 111, only the side ladder body 100 is exposed and visible, and only two points of the side ladder body 100 need to be installed on the vehicle body during installation, so that the installation and disassembly of the side ladder are simple and convenient.

[0070] In some embodiments, referring to Figures 5 to 9 , the telescopic drive mechanism 600 includes a telescopic drive motor 614, a chain gear transmission assembly and a gear rack telescopic assembly, the telescopic drive motor 614 is installed on the fixed plate 300, and the fixed plate 300 is installed on the upper end of the two fixed side frames 111; wherein the fixed plate 300 also provides mounting support for the chain gear transmission assembly.

[0071] Referring to Figures 5 to 9 , the chain gear transmission assembly includes a transmission gear set, a transmission rod 602, two sets of transmission sprocket sets and two telescopic transmission chains 601; the transmission sprocket set is partially arranged in the hollow cavity 106, the telescopic transmission chain 601 is wound on the transmission sprocket set and extends along the length direction of the hollow cavity 106; the transmission rod 602 is installed on the fixed plate 300, and the two 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, and the transmission rod 602 drives the telescopic transmission chain 601 through the transmission sprocket set to realize synchronous transmission; the telescopic drive motor 614 is installed between the two telescopic transmission chains 601, and the power can be synchronously transmitted to the telescopic transmission chain 601 through the transmission rod 602, so as to realize the synchronous movement of the two movable side frames 402. This structure is compact, has good integration and saves installation space.

[0072] In actual use, a protective cover 201 is arranged on the fixed plate 300 (see Figures 1 to 6 ), the transmission gear set, the transmission rod 602, the part of the telescopic transmission chain 601 exposed in the hollow cavity 106 and the transmission sprocket set are covered in the protective cover 201, so as to prevent damage caused by dust, rain and snow. Moreover, when the side ladder is installed as a whole, only mounting points need to be arranged at the upper and lower ends of the side ladder body 100, or the mounting point of the upper end of the side ladder body 100 can be arranged on the fixed plate 300.

[0073] In combination Figure 8 and Figure 9 , the transmission gear set comprises a telescopic main gear 615 and a telescopic slave gear 616 which are engaged with each other, the telescopic main gear 615 is installed on the main shaft of the telescopic drive motor 614, and the telescopic slave gear 616 is installed on the transmission rod 602.

[0074] Referring to Figures 5 to 9 , the gear rack telescopic assembly comprises a telescopic synchronous gear 607 and a telescopic transmission rack 608 which is engaged with the telescopic synchronous gear 607, the telescopic transmission rack 608 is arranged in the hollow cavity 106; the telescopic synchronous gear 607 is arranged on the movable side frame 402, the telescopic synchronous gear 607 is connected with the transmission sprocket set through a transmission shaft 610 and rotates synchronously with the transmission sprocket set, thereby driving the telescopic ladder 400 to move along the telescopic transmission rack 608.

[0075] The power transmission path of the present application is as follows: when it is needed to extend the telescopic ladder 400, the telescopic drive motor 614 is started, power is transmitted to the telescopic transmission chain 601 through the transmission gear set, the transmission rod 602 and the transmission sprocket set, the telescopic transmission chain 601 drives the telescopic synchronous gear 607 to move along the telescopic transmission rack 608, thereby achieving the purpose of extending the telescopic ladder 400 out of the side climbing ladder body 100.

[0076] The telescopic drive mechanism 600 of the present application adopts a chain sprocket and chain transmission and gear rack telescopic mode to drive the telescopic ladder 400 to extend and retract, which has the following beneficial effects: first, this mode can adapt to the variable trajectory motion of the side climbing ladder curve, the telescopic transmission chain 601 can extend along the side climbing ladder curve through the guidance of the sprocket, and long-distance power transmission under a curved path can be achieved, so that the chain sprocket telescopic drive motor 614 can be arranged at the upper end of the fixed side frame 111 or on the roof, which facilitates the installation and removal of the telescopic drive motor 614; the telescopic transmission chain 601 extends into the hollow cavity 106 and is connected with the movable side frame 402 in the hollow cavity 106.

[0077] Secondly, one telescopic drive motor 614 is arranged on the fixed side frame 111, one telescopic drive motor 614 drives two groups of transmission sprocket sets through the transmission rod 602, thereby achieving synchronous transmission of the two telescopic transmission chains 601, ensuring the synchronism and stability of the telescopic motion of the movable side frame 402, and providing stable and reliable climbing support for the climber.

[0078] Third, in terms of power transmission, the chain wheel and chain transmission has high transmission efficiency, which can effectively transmit the power of the telescopic drive motor 614 to the gear rack, ensuring sufficient power for the telescopic movement of the telescopic ladder 400. The engagement between the telescopic transmission chain 601 and the chain wheel is tight and is not prone to slipping, which makes the entire driving process more stable and reliable, and can accurately control the telescopic displacement of the telescopic ladder 400.

[0079] Fourth, the gear and rack telescopic assembly provides accurate guidance for the telescopic movement of the telescopic ladder 400. The gear and rack have high precision, can maintain straight-line movement during telescopic operation, and effectively avoid unstable conditions such as deflection of the telescopic ladder 400. Moreover, this structure can withstand a large load, and even when the telescopic ladder 400 is carrying heavy equipment or personnel, it can still smoothly perform telescopic operation.

[0080] In summary, the flexible transmission characteristics of the chain wheel and chain combined with the precise guidance of the gear and rack can flexibly adjust the motion posture of the telescopic ladder 400 according to the side climbing ladder curve. This not only ensures the normal operation of the telescopic ladder 400 under complex trajectories, but also reduces the additional resistance generated by trajectory changes, reduces the load of the drive motor, and prolongs the service life of the drive mechanism.

[0081] The telescopic drive mechanism 600 can also use other technical means, for example, use fixed pulleys, movable pulleys, and winding ropes to cooperate with lifting, winding ropes connected to the dynamic side frame 402 of the telescopic ladder 400 to realize the extension or retraction movement of the dynamic side frame 402, the guide bar 109 is arranged in the hollow cavity 106, and the sliding block is arranged on the dynamic side frame 402 and cooperates with the guide bar 109 to guide the movement of the telescopic ladder 400; use electric push rods, pneumatic struts or hydraulic struts, etc. Linear actuators to realize the telescopic movement of the telescopic ladder 400, and the guide bar 109 sliding block guides the movement of the telescopic ladder 400.

[0082] In some embodiments, referring to Figure 5 and Figure 6The 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.

[0083] 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.

[0084] 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.

[0085] In some embodiments, see Figure 7As shown, the axial two sides of the telescopic synchronous gear 607 are symmetrically provided with a guide sleeve 613, the guide sleeve 613 is arranged on the movable side frame 402, the transmission shaft 610 passes through the guide sleeve 613 and is in clearance fit with the guide sleeve 613, and two limiting columns 611 are respectively fixed on the guide sleeve 613. The guide sleeve 613 has a supporting and guiding effect on the transmission shaft 610, the telescopic synchronous gear 607 is rotationally connected with the movable side frame 402 through the guide sleeve 613, and the limiting column 611 is integrated on the guide sleeve 613, so that the whole structure is compact.

[0086] Optionally, referring to Figure 7 As shown, the guide strip 109 is a T-shaped slide rail, two sides of the T-shaped slide rail form a limiting groove 110; the limiting wheel 612 is located in the limiting groove 110 and is in rolling fit with the inner wall of the limiting groove 110. The cooperation structure of the T-shaped slide rail and the limiting wheel 612 has many advantages. First, the limiting grooves 110 on the two sides of the T-shaped slide rail have a precise limiting effect on the limiting wheel 612, which can effectively prevent the limiting wheel 612 from deviating laterally during operation, thereby ensuring the stability of operation, ultimately ensuring that the telescopic ladder 400 will not deviate during operation, ensuring that the turnover pedal 401 on the telescopic ladder 400 will not tilt, and ensuring the safety and reliability of the climber climbing; second, the rolling fit reduces friction, compared with the traditional sliding friction structure, can reduce energy consumption, improve the operation efficiency of the equipment, and reduce the wear of the parts, prolong the service life of the guide strip 109 and the limiting wheel 612, and reduce the maintenance cost of the equipment.

[0087] In some embodiments, referring to Figure 5 and Figure 6 A plurality of guide rollers 108 for guiding the movement of the movable side frame 402 are arranged in the hollow cavity 106, wherein at least two guide rollers 108 are respectively in rolling contact with two surfaces of the movable side frame 402 facing and away from the vehicle body, and the guide rollers 108 have a guiding effect on the movement of the telescopic ladder 400. This is because the movable side frame 402 needs to be extended and retracted, so there must be a gap between the movable side frame 402 and the inner wall of the hollow cavity 106 to avoid the phenomenon that the movable side frame 402 moves jammed and not smoothly; the existence of such a gap will also cause unstable factors such as deviation and inclination of the movable side frame 402 during movement, and thus the guide rollers 108, the limiting columns 611 and the limiting wheels 612 are arranged in the hollow cavity 106 to limit the four directions of the movable side frame 402.

[0088] For more clarity, the following is an example: when the side ladder is installed on the right side of the vehicle body, two limiting wheels 612 are arranged on the front and rear sides of the movable side frame 402, and at least two guide rollers 108 are arranged on the left and right sides of the movable side frame 402, that is, one guide roller 108 contacts the left side of the movable side frame 402 close to the vehicle body, and one guide roller 108 contacts the right side of the movable side frame 402 away from the vehicle body. In this way, the movement track of the movable side frame 402 is limited from the front, rear, left and right, and it is ensured that the extension ladder 400 is extended, the movable side frame 402 remains parallel to the side ladder body 100, the turnover pedal 401 remains in a horizontal state, and is parallel to the fixed climbing rod 103. In this way, when the climber steps on the turnover pedal 401, the climber can step stably, and the safety of the climber climbing is ensured.

[0089] Of course, the side ladder can also be installed on the left side and the rear of the vehicle body, and is not limited to the right side of the vehicle body.

[0090] In some embodiments, referring to Figure 18 , a guide groove 403 for the guide roller 108 is arranged on the surface of the movable side frame 402, which can ensure that the guide roller 108 stably rolls in the guide groove 403, and reduce the possibility of shaking and deviation.

[0091] Optionally, a buffer block (not shown in the figure) is further arranged at both ends of the guide groove 403, which can avoid the guide roller 108 from sliding out of the guide groove 403 when the guide roller 108 rolls to the position close to the both ends.

[0092] In some embodiments, referring to Figure 6 , Figure 8 , Figure 9 and Figure 13The transmission chain wheel set comprises a main transmission chain wheel 603, an extension guiding chain wheel 604, a movable chain wheel 605 and a slave transmission chain wheel 606 which are arranged along the transmission direction of the extension transmission chain 601; the main transmission chain wheel 603 is exposed outside the hollow cavity 106, and the extension guiding chain wheel 604, the movable chain wheel 605 and the slave transmission chain wheel 606 are arranged inside the hollow cavity 106; the main transmission chain wheel 603 is arranged at both ends of the transmission rod 602; the slave transmission chain wheel 606 is arranged at the lower end of the hollow cavity 106 away from the transmission rod 602; the extension guiding chain wheel 604 is located between the main transmission chain wheel 603 and the slave transmission chain wheel 606; and the movable chain wheel 605 is coaxially arranged on the transmission shaft 610 together with the extension synchronization gear 607. The extension guiding chain wheel 604 is arranged between the main transmission chain wheel 603 and the slave transmission chain wheel 606, and is specifically arranged along the movement track of the extension transmission chain; the extension guiding chain wheel 604 guides the extension transmission chain, especially when the transmission track is curved, the extension transmission chain needs to be guided by the extension guiding chain wheel 604 to bend along the movement track. The present application realizes better force transmission and synchronization during transmission by coaxially arranging the extension synchronization gear 607 and the extension guiding chain wheel 604. When the power is transmitted to the main transmission chain wheel 603 through the transmission rod 602, the main transmission chain wheel 603 drives the extension transmission chain 601 to transmit, the extension transmission chain 601 drives the extension guiding chain wheel 604, the movable chain wheel 605 and the slave transmission chain wheel 606 to rotate, and the rotation of the movable chain wheel 605 drives the transmission shaft 610 to rotate, the transmission shaft 610 drives the extension synchronization gear 607 to rotate along the extension transmission rack 608, and the extension action of the extension ladder 400 is realized.

[0093] The extension guiding chain wheel 604 is rotationally connected in the hollow cavity 106, and the movable chain wheel 605 rotates with the extension transmission chain 601 and synchronously moves with the transmission shaft 610 and the dynamic side frame 402.

[0094] The cooperation mode of the transmission sprocket set and the gear rack telescopic assembly can effectively improve the stability and accuracy of transmission. The main transmission sprocket 603 is located at both ends of the transmission rod 602, which can balance the transmission of power and ensure that the force is evenly distributed during transmission, reducing the situation of excessive local stress. The telescopic guide sprocket 604 and the telescopic synchronous gear 607 are coaxially arranged on the transmission shaft 610. This layout helps to accurately guide the movement direction of the telescopic transmission chain 601, so that the telescopic transmission chain 601 can run according to the predetermined trajectory during transmission, avoiding problems such as chain disengagement or chain jamming. The transmission sprocket 606 is arranged at the lower end of the hollow cavity 106 away from the transmission rod 602. It cooperates with the main transmission sprocket 603 and the telescopic guide sprocket 604 to support and guide the telescopic transmission chain 601 at different positions, further optimizing the transmission efficiency of the entire transmission sprocket set. Moreover, such dispersed arrangement can also adapt to the spatial structure inside the hollow cavity 106, reasonably utilize the space while reducing the possibility of mutual interference between the sprockets, thereby prolonging the service life of the entire transmission sprocket set and improving the reliability and sustainability of the equipment operation.

[0095] The side ladder body 100 in the present application has an arc-shaped curved design, so that the side ladder body 100 can adapt to the streamline of the vehicle body profile surface, and the upper end of the side ladder body 100 is also extended to the roof by bending, thereby facilitating the arrangement of the telescopic drive motor 614 and the chain gear transmission assembly. Therefore, the hollow cavity 106 is also designed in an arc-shaped curved manner, and a plurality of telescopic guide sprockets 604 are arranged 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.

[0096] The power transmission structure of the transmission sprocket driving gear rack is compact in structure, and the components interact, correlate and restrict each other. The telescopic synchronous gear 607 can accurately perform synchronous movement according to the rotation state of the movable sprocket 605, ensuring that the entire transmission sprocket set runs stably and efficiently in the hollow cavity 106. This layout not only improves the transmission efficiency, but also reduces the risk of failure due to improper cooperation of transmission components, laying a solid foundation for stable operation of the entire device.

[0097] In some embodiments, referring to Figure 6 and Figure 13The hollow cavity 106 is provided with a chain transmission guide groove 107, the telescopic guide sprocket 604, the transmission sprocket 606, the movable sprocket 605 and the telescopic transmission chain 601 are arranged in the chain transmission guide groove 107, so that the telescopic transmission chain 601 is transmitted along the chain transmission guide groove 107, and the telescopic transmission chain 601 has a limiting and guiding effect, and interference between the telescopic transmission chain 601 and the movable side frame 402 of the telescopic ladder 400 is avoided. In particular, the movable sprocket 605 is not fixed, so the chain transmission guide groove 107 has a limiting effect on the movable sprocket 605, which can avoid the risk of the movable sprocket 605 falling off the telescopic transmission chain 601.

[0098] The above embodiments are described for the features of the telescopic ladder telescopic operation, and the following embodiments will focus on the description of the technical features of the flip pedal.

[0099] In some embodiments, referring to Figures 15 to 22 The flip drive mechanism 700 includes a flip drive motor 701 and a sprocket and chain transmission assembly, and the movable side frame 402 is provided with a mounting cavity 404 along the length direction thereof, the sprocket and chain transmission assembly is hidden in the mounting cavity 404, and the flip drive motor 701 is installed at one end of the movable side frame 402 in the length direction; the sprocket and chain transmission assembly drives a plurality of flip pedals 401 to flip synchronously. The advantages of this design are as follows: first, the sprocket and chain transmission assembly is hidden in the mounting cavity 404 of the movable side frame 402, which does not occupy too much space, does not affect the layout of other equipment of the vehicle, and does not affect the appearance visibility; second, the plurality of flip pedals 401 can be flipped synchronously by the sprocket and chain transmission assembly, which is simple and efficient in operation, and can quickly realize the unfolding and folding operation of the pedals whether a single user or multiple users use the side ladder continuously, further improving the use convenience of the vehicle; third, the sprocket and chain transmission can realize variable trajectory curve transmission, which is suitable for not only linear side ladders but also side ladders with certain arc degrees according to the curvature of the vehicle body, and has a wide range of applications.

[0100] For the side ladder of the vehicle provided in the present application, when it is necessary to climb and use, the telescopic ladder 400 is moved downward by the telescopic drive mechanism 600 to extend out of the side ladder body 100, and then the plurality of flip pedals 401 can be unfolded synchronously by the start of the flip drive mechanism 700; when it is not necessary to climb, the plurality of flip pedals 401 can be folded synchronously on the movable side frame 402 by the flip drive mechanism 700, and then the telescopic ladder 400 is moved upward by the telescopic drive mechanism 600 until the movable side frame 402 is retracted into the hollow cavity 106 of the fixed side frame 111.

[0101] Optionally, the turnover driving mechanism 700 can adopt a rack and pinion drive to realize the turnover action of the turnover pedal 401. In this case, the rack is installed in the accommodation cavity 404, and the reciprocating movement of the rack in the accommodation cavity 404 can be realized by an electric push rod or a cylinder, the forward and reverse rotation of the gear connected with the turnover pedal 401 is realized, and the synchronous turnover of the turnover pedal 401 is realized.

[0102] Alternatively, the turnover driving mechanism 700 includes a turnover driving motor 701 corresponding to each turnover pedal 401. Each turnover pedal 401 is directly and individually driven by the turnover driving motor 701, and the turnover pedal 401 can be individually turned over.

[0103] The turnover driving motor 701 has a stepping motor that rotates clockwise and counterclockwise to achieve the purpose of turning over the turnover pedal 401 in different directions.

[0104] In some embodiments, referring to Figures 17 to 20 , the sprocket and chain transmission assembly includes a turnover driving sprocket 703, a turnover guide sprocket 704, a turnover driven sprocket 705, and a turnover driving chain 702. The turnover driving sprocket 703 is installed on the main shaft of the turnover driving motor 701. The turnover driven sprocket 705 is installed at one end of the accommodation cavity 404 away from the turnover driving sprocket 703. The turnover driven sprocket 705 and the turnover driving sprocket 703 are separately arranged at both ends of the turnover driving chain 702 to support and drive the turnover driving chain 702. The turnover guide sprocket 704 is located between the turnover driving sprocket 703 and the turnover driven sprocket 705. The turnover guide sprocket 704 drives the turnover pedal 401 to turn over through the turnover support shaft 708. The turnover guide sprocket 704 has a supporting and guiding effect on the turnover driving chain 702. In particular, the power of the turnover driving motor 701 is transmitted to the turnover support shaft 708 through the turnover guide sprocket 704, so that the turnover pedal 401 turns over.

[0105] Since the turnover driven sprocket 705 corresponds to the position where the turnover pedal 401 is arranged, the turnover driven sprocket 705 can also transmit power to the lowermost turnover pedal 401 to realize the synchronous turnover and folding of the lowermost turnover pedal 401 and the other turnover pedals 401 above it.

[0106] The power transmission route of the turnover pedal 401 is as follows: the power of the turnover driving motor 701 is rotated through the turnover driving sprocket 703, transmitted to the turnover guide sprocket 704 through the turnover driving chain 702, transmitted to the turnover support shaft 708 through the turnover guide sprocket 704, and the rotation of the turnover support shaft 708 achieves the purpose of turning over the turnover pedal 401 in different directions.

[0107] In the present application, the sprocket and chain transmission assembly driving the turnover pedal 401 to turn over is arranged in the movable side frame 402, and the telescopic transmission chain 601 is arranged in the fixed side frame 111. The two chains are parallel and do not affect each other.

[0108] In some embodiments, referring to Figure 20 , a turnover transmission gear set is arranged between the turnover pedal 401 and the turnover guide sprocket 704. The turnover transmission gear set includes a turnover transmission gear 707 and a turnover main gear 706 that mesh with each other. The turnover transmission gear 707 is coaxially installed on a turnover driving shaft 709, and the turnover driving shaft 709 is installed in the accommodation cavity 404. The turnover main gear 706 is installed on a turnover support shaft 708.

[0109] The movement of the turnover pedal 401 is transmitted to the turnover transmission gear 707 through the turnover guide sprocket 704. Since the turnover transmission gear 707 and the turnover main gear 706 mesh with each other, the turnover main gear 706 is driven to rotate on the turnover support shaft 708. This transmission mode not only effectively transmits the turnover action of the turnover pedal 401, but also plays a role in speed reduction and torque increase to some extent, making the operation of the entire turnover driving mechanism 700 more stable and reliable. In actual application scenarios, the turnover pedal 401 may be frequently turned over, and the structural design of the turnover transmission gear set can well adapt to this high-frequency use requirement, reduce wear and failure caused by frequent movement, and improve the service life of the entire device.

[0110] In some embodiments, referring to Figure 17 , Figure 21 and Figure 22 , a connecting rod support assembly 800 is further arranged between the turnover pedal 401 and the movable side frame 402. One end of the connecting rod support assembly 800 is hinged to the turnover pedal 401, and the other end is hinged to the movable side frame 402. When the turnover pedal 401 is in the unfolded state, the connecting rod support assembly 800 is in the stretched state and forms a triangular support with the turnover pedal 401 and the movable side frame 402. When the turnover pedal 401 is in the folded state, the connecting rod support assembly 800 is in the folded state.

[0111] The arrangement of the connecting rod support assembly 800 provides a stable and flexible connection between the turnover pedal 401 and the movable side frame 402. The triangular support structure can effectively disperse pressure when the turnover pedal 401 is unfolded, enhancing the stability of the overall structure and enabling the turnover pedal 401 to withstand greater weight or external force without deforming or damaging. When the turnover pedal 401 needs to be folded, the connecting rod support assembly 800 can be smoothly folded, without hindering the folding action, and can effectively save space, making the entire device more compact in the folded state, facilitating storage or transportation.

[0112] In some embodiments, referring to Figure 21 and Figure 22 , the link support assembly 800 includes a first link 801 and a second link 804, a first end of the first link 801 is hinged to the inner side of the moving side frame 402 through a first shaft 802, a second end of the first link 801 is rotatably connected to a first end of the second link 804 through a second shaft 803, a second end of the second link 804 is provided with a limiting sliding hole 805, and the second link 804 is hinged to the side of the flip pedal 401 through a third shaft 806 passing through the limiting sliding hole 805; when the flip pedal 401 is unfolded, the first link 801 rotates around the first shaft 802, the first link 801 and the second link 804 rotate around the second shaft 803 at the same time, and the second link 804 rotates around the third shaft 806 while sliding along the third shaft 806, until the first link 801 and the second link 804 are unfolded to an extended state, providing tension for the flip pedal 401 to bear, improving the stability of the flip pedal 401 to bear.

[0113] When the flip pedal 401 is folded, the first link 801 reversely rotates around the first shaft 802, the first link 801 and the second link 804 reversely rotate around the second shaft 803 at the same time, and the second link 804 reversely rotates around the third shaft 806 while reversely sliding along the third shaft 806, until the first link 801 and the second link 804 are folded to a contracted state, reducing the occupied space for easy storage or transportation.

[0114] In some embodiments, referring to Figure 21 and Figure 25 , the flip support shaft 708 is arranged at the end close to the vehicle body when the flip pedal 401 is in the unfolded state, the third shaft 806 is arranged at the end away from the vehicle body when the flip pedal 401 is in the unfolded state, and the first shaft 802 is located above the unfolded flip pedal 401; the link support assembly 800 provides tension for the flip pedal 401. Relative to the vehicle body, by such design, the flip pedal 401 is flipped outward away from the vehicle body when it is flipped, and since the side ladder is installed close to the outer side of the vehicle body, there is no more space between the flip pedal 401 and the side of the vehicle body, and by arranging the flip support shaft 708 close to the vehicle body, the flip pedal 401 can be flipped outward around the flip support shaft 708, and by the design of the connection position of the first link 801 and the second link 804, the bearing points of the two links after unfolding are at the end of the flip pedal 401 away from the vehicle body, which greatly improves the stability of the flip pedal 401 to bear.

[0115] Explainable, for 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 first shaft 802, the third shaft 806 and the center line of the flip support shaft 708 connected with the same flip pedal 401 form a triangular support structure (see Figure 21 ), the design of the position makes the triangular support structure formed above the flip pedal 401, so that the first connecting rod 801 and the second connecting rod 804 exert a pulling force on the flip pedal after unfolding, because the pulling force is a kind of traction, compared with the supporting force which is from bottom to top, the same material and the same size of the connecting rod support assembly 800, the pulling force is more stable and reliable. When the flip pedal is in the folded state, the first connecting rod 801 and the second connecting rod 804 are folded, and the first shaft 802, the second shaft 803 and the third shaft 806 are in a straight line with the center line of the flip support shaft 708 (see Figure 22 ).

[0116] In some embodiments, referring to Figure 16 and Figure 21 , the flip pedal 401 is provided with an anti-skid structure 405 on the tread surface; when the flip pedal 401 is in the folded state, the anti-skid structure 405 faces the side of the vehicle body. When it is necessary to unfold the flip pedal 401 for use, the anti-skid structure 405 can provide better anti-skid performance for the feet of the climber, especially in rainy and snowy weather, the flip pedal 401 will be wet and slippery or very smooth due to icing, and the climber is easy to slip when climbing, so the anti-skid structure 405 can provide a stable stepping experience for the user, thereby improving the safety and reliability of use.

[0117] In some embodiments, referring to Figure 16 and Figure 21 , the anti-skid structure 405 is a tooth-shaped texture or an array of protrusions arranged on the flip pedal 401. These anti-skid structures 405 can increase the frictional resistance of the feet of the climber, thereby achieving the purpose of anti-skid. The anti-skid structure 405 can also be a different pattern of anti-skid rubber pad pasted on the tread surface of the flip pedal 401.

[0118] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described or recorded in a certain embodiment can be referred to the related description of other embodiments.

[0119] Based on the same inventive concept, the embodiments of the present application also provide a vehicle comprising the side climbing ladder for vehicles, see Figure 24 and Figure 25 .

[0120] The utility model embodiment further provides a kind of vehicle, due to telescopic ladder 400 when using, only telescopic ladder 400 is stretched out and unfolds turnover pedal 401, telescopic ladder 400 when not using, movable side frame 402 can be hidden in the hollow cavity 106 of fixed side frame 111, and turnover pedal 401 is turned over and is in the state of folding, this side ladder can be designed in coordination with the overall design style of turnover pedal 401 and vehicle, personalized design can also be carried out, appearance integrity and brand high-end presentation can be significantly improved;It is also beneficial to the stable and reliable up and down of climber, improve the safety of climber;And also due to movable side frame 402 is not exposed, so that the appearance of vehicle body is neat, improve the appearance quality of whole car, so as to be able to improve the brand value and market competitiveness of whole car.

[0121] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement and improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A vehicle side ladder, characterized in that, include: The side ladder body (100) 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. as well as The telescopic ladder (400) includes a movable side frame (402) and a flip-up 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 flip pedal (401) flips away from the movable side frame (402) in an unfolded state by a 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.

2. The vehicle side ladder as described in claim 1, characterized in that, The telescopic drive mechanism (600) includes a telescopic drive motor (614), a chain gear transmission assembly, and a gear rack telescopic assembly. The telescopic drive motor (614) is mounted on a fixed plate (300), and the fixed plate (300) is mounted on 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 within 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 fixed 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, and 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 group via the transmission shaft (610), driving the telescopic ladder (400) to move.

3. The vehicle side ladder as described in claim 2, 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).

4. The vehicle side ladder as described in claim 3, characterized in that, A guide strip (109) is provided inside the hollow cavity (106), and the telescopic transmission rack (608) is provided on the guide strip (109). Limiting posts (611) are provided on both sides of the moving side frame (402) facing and away from the flip pedal (401). Limiting wheels (612) that roll with the guide strip (109) are provided on the limiting posts (611). Guide sleeves (613) are symmetrically provided on both sides of the telescopic synchronous gear (607) along the axial direction. The guide sleeves (613) are provided on the moving side frame (402). The transmission shaft (610) passes through the guide sleeves (613) and is in clearance fit with the guide sleeves (613). The two limiting posts (611) are fixed on the guide sleeves (613) respectively.

5. The vehicle side ladder as described in claim 3, 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 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 sprocket (606) are all disposed inside the hollow cavity (106); the main transmission sprocket (603) is disposed at both ends of the transmission rod (602); the driven sprocket (606) is disposed at the lower end 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 disposed on the transmission shaft (610) with the telescopic synchronous gear (607).

6. The vehicle side ladder as described in any one of claims 1-5, 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.

7. The vehicle side ladder as described in claim 6, characterized in that, The sprocket and chain drive assembly includes a flip drive sprocket (703), a flip guide sprocket (704), a flip driven sprocket (705), and a flip drive chain (702). The flip drive sprocket (703) is mounted on the main shaft of the flip drive motor (701). The flip driven sprocket (705) is mounted in the mounting cavity (404) at one end away from the flip drive sprocket (703). The flip driven sprocket (705) and the flip drive sprocket (703) are respectively located at both ends of the flip drive chain (702). The flip guide sprocket (704) is located between the flip drive sprocket (703) and the flip driven sprocket (705). The flip guide sprocket (704) drives the flip pedal (401) to flip via the flip support shaft (708).

8. The vehicle side ladder as described in claim 7, 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.

9. The vehicle side ladder as described in claim 8, characterized in that, The link support assembly (800) includes a first link (801) and a second link (804). The first end of the first link (801) is hinged to the inner surface of the moving side frame (402) via a first shaft (802). The second end of the first link (801) is rotatably connected to the first end of the second link (804) via a second shaft (803). The second end of the second link (804) is provided with a limiting sliding hole (805). The second link (804) is connected to the first end of the second link (804) via a third shaft (803) passing through the limiting sliding hole (805). 6) Hinged to the side of the flip pedal (401); when the flip pedal (401) is unfolded, the first connecting rod (801) rotates around the first axis (802), the first connecting rod (801) and the second connecting rod (804) rotate around the second axis (803) at the same time, and the second connecting rod (804) slides along the third axis (806) through the limiting sliding hole (805) until the first connecting rod (801) and the second connecting rod (804) are unfolded in an extended 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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