Carriage structure with storage folding ladder

By designing a folding ladder structure with a bottom frame and locking pins, the problem of insufficient load-bearing capacity in RV cabins is solved, providing a folding ladder with high load-bearing capacity and multiple steps, which can adapt to taller cabins, is flexible in use, and meets the needs of RV entry and exit.

CN223720783UActive Publication Date: 2025-12-26GUANGDONG LIMIN CIVIL DEFENSE ENG TECH CO LTD
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Patent Information

Application Number
CN202520433369.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-13
Publication Date
2025-12-26
Estimated Expiration
2035-03-13

AI Technical Summary

Technical Problem

The existing folding ladders in RV cabins have limited load-bearing capacity and small unfolding height, making them unsuitable for taller RV cabins.

Method used

A carriage structure including a bottom frame, a folding ladder, and a locking pin is designed. The folding ladder consists of first and second support rods, a step, a fixing rod, and a connecting rod. The support rods are equipped with rollers, and the bottom frame is equipped with a connector and a box hook to form a stable triangular structure. The locking pin can lock the angle and position of the step.

Benefits of technology

It features a high load-bearing capacity, multi-step folding ladder, adaptable to taller vehicle compartments, flexible in use, and can be used independently to meet the needs of RV entry and exit.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN223720783U_ABST
    Figure CN223720783U_ABST
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Abstract

The utility model relates to the technical field of motor homes, in particular to a carriage structure with a storage folding ladder, which comprises a bottom frame, a carriage arranged on the bottom frame, a folding ladder movably connected to the bottom of the bottom frame, and a locking piece used for locking the folding ladder. The folding ladder comprises a first supporting rod, a second supporting rod, a plurality of pedals rotationally connected between the first supporting rod and the second supporting rod, a fixing rod connected between the first supporting rod and the second supporting rod and a connecting rod, and the pedals are rotationally connected with the connecting rod. When the folding ladder is used, the two ends of the folding ladder make contact with the box body and the ground respectively to form a stable triangular structure, a plurality of pedals can be arranged, the bearing capacity is high, and the folding ladder is suitable for a motor home with a high carriage. And on the other hand, the folding ladder disclosed by the utility model can be completely separated from the carriage structure for independent use, so that the use is flexible, and the universality is high.
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Description

TECHNICAL FIELD

[0001] The utility model relates to a house car technical field, concretely relates to a car body structure with accomodate folding ladder. BACKGROUND

[0002] House car, also known as "house on wheels", has two functions of "house" and "car", but its attribute is still car, is a kind of movable, with the basic facilities of home necessary car type, house car usually includes vehicle chassis assembly, and the car body with water and electricity system, bed and kitchen structure installed on chassis assembly. Common house car on market has A type, B type, C type and off-road house car, for the car body of other types of house car except B type house car, the height is generally high, when entering and exiting the car body, ladder needs to be assisted. In the current car body structure, there is the mode of setting scissor folding ladder under the door of car body, folding ladder is automatically extended when door is opened, such as the house car folding step of electric pole push disclosed in Chinese patent publication No. CN221340419U, but the folding ladder is mostly relied on the structure of the connecting part with car body to bear, the weight is limited, so the unfolding height is generally small, usually only 2-3 steps, it is difficult to adapt to the house car body with high ground clearance. SUMMARY

[0003] In order to solve the above problems, the utility model provides a car body structure with accomodate folding ladder.

[0004] The utility model adopts the following scheme to realize:

[0005] A car body structure with accomodate folding ladder, including bottom frame, car body set on the bottom frame, folding ladder movably connected to the bottom of the bottom frame, and locking bolt locking part for locking the folding ladder;The folding ladder includes first support rod and second support rod, a plurality of steps rotatably connected between the first support rod and the second support rod, a fixed rod connected between the first support rod and the second support rod, and a connecting rod arranged in parallel with the first support rod and the second support rod, a plurality of steps are rotatably connected with the connecting rod;The side of the first support rod away from the second support rod is provided with a plurality of first rollers, and the side of the second support rod away from the first support rod is provided with a plurality of second rollers.

[0006] Further, the fixed rod is at least provided with one, and the fixed rod is connected between the end of the first support rod and the end of the second support rod.

[0007] Further, the first support rod is provided with a first connecting hole, the side of the step close to the first support rod is provided with a second connecting hole, and the locking bolt locking part is connected to the second connecting hole through the first connecting hole;The number of first connecting holes matches the number of steps.

[0008] Further, the bottom surface of the bottom frame is provided with a first connecting piece and a second connecting piece, and the first connecting piece and the second connecting piece have a space for accommodating the folding ladder, the first roller and the first connecting piece are movably and slidably connected, and the second roller and the second connecting piece are movably and slidably connected.

[0009] Further, the cross section of the first connecting piece and the second connecting piece is a "U" shape.

[0010] Further, the bottom of the bottom frame is provided with a box, and the box is provided with a hook at a position corresponding to the folding ladder.

[0011] Further, the connecting rod is provided with two, and is connected to the opposite sides of the pedal.

[0012] Further, the pedal comprises a pedal body, two first connecting shafts arranged on the opposite sides of the pedal body respectively, and two second connecting shafts arranged on the opposite sides of the pedal body respectively; one of the first connecting shafts is connected with the first supporting rod, and the other first connecting shaft is connected with the second supporting rod; and the two second connecting shafts are connected with the two connecting rods respectively.

[0013] Further, the first connecting piece is provided with a first locking hole for locking the folding ladder at one end close to the edge of the carriage, and the end of the first supporting rod is provided with a second locking hole corresponding to the first locking hole; and the second connecting piece is provided with a third locking hole for locking the folding ladder at one end close to the edge of the carriage, and the end of the second supporting rod is provided with a fourth locking hole corresponding to the third locking hole.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model discloses a folding ladder is arranged at the bottom of the bottom frame, and the folding ladder is movably connected with the bottom frame, so that when the folding ladder is needed to be used, the folding ladder can be directly drawn out, and the first supporting rod and the second supporting rod are in contact with the ground and the pedal is unfolded, so that the pedal can be directly put back to the bottom of the bottom frame after being folded when being stored, and the utility model is convenient and fast to use. The two ends of the folding ladder are in contact with the box and the ground respectively, form a stable triangular structure, and multiple pedals can be arranged, so that the carrying capacity is strong, and the utility model is suitable for a motor home with a high carriage. On the other hand, the folding ladder of the utility model can be completely separated from the carriage structure and used independently, so that the utility model is flexible and has high versatility. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A schematic view of a carriage structure with a folding ladder storage of the utility model is provided.

[0017] Figure 2 AFigure 1 Enlarged view of middle A part.

[0018] Figure 3 The utility model is a folding ladder schematic diagram.

[0019] Figure 4 The utility model is a folding body storage state schematic diagram.

[0020] Figure 5 The utility model is a folding ladder use state diagram.

[0021] The figure includes:

[0022] The bottom frame 1, first connecting piece 11, second connecting piece 12, first locking hole 13, third locking hole 14, carriage 2, folding ladder 3, first support rod 31, first roller 311, first connecting hole 312, second locking hole 313, second support rod 32, second roller 321, fourth locking hole 322, pedal 34, second connecting hole 341, pedal body 342, first connecting shaft 343, second connecting shaft 344, fixed rod 35, connecting rod 36, locking piece 4, box 5, hook 51. Specific implementation

[0023] In order to facilitate the person skilled in the art to understand the utility model, the utility model will be described in further detail below in combination with specific embodiments and drawings.

[0024] Referring to Figures 1 to 5 The utility model provides a kind of carriage 2 structure with storage folding ladder 3, including bottom frame 1, be set on the carriage 2 of bottom frame 1, folding ladder 3 is movably connected in the bottom of bottom frame 1, and locking piece 4 for locking folding ladder 3.Folding ladder 3 is movably connected with bottom frame 1, so folding ladder 3 can be extracted from the bottom of bottom frame 1 for use at any time, and locking piece 4 can fix folding ladder 3 at bottom frame 1 when storage.

[0025] The folding ladder 3 comprises a first support rod 31 and a second support rod 32, a plurality of steps 34 rotatably connected between the first support rod 31 and the second support rod 32, a fixing rod 35 connected between the first support rod 31 and the second support rod 32, and a connecting rod 36, wherein the plurality of steps 34 are rotatably connected with the connecting rod 36. In the embodiment, two connecting rods 36 are arranged, and each is connected to the opposite side of a step 34. The arrangement of two connecting rods 36 ensures that the plurality of steps 34 rotate more stably. A plurality of first rollers 311 are arranged on the side of the first support rod 31 away from the second support rod 32, and a plurality of second rollers 321 are arranged on the side of the second support rod 32 away from the first support rod 31. In the storage state, the steps 34 are parallel to the first support rod 31 and the second support rod 32, and in the unfolded state, the steps 34 can be rotated to an angle parallel to the ground.

[0026] The fixing rod 35 is arranged at least once, and the fixing rod 35 is connected between the end of the first support rod 31 and the end of the second support rod 32. In the embodiment, two fixing rods 35 are arranged, one of which is arranged at one end of the first support rod 31 (or the second support rod 32), and the other fixing rod 35 is arranged at the other end of the first support rod 31 (or the second support rod 32). Taking the unfolded state as an example, one of the fixing rods 35 is connected between the upper end of the first support rod 31 and the upper end of the second support rod 32, and the other fixing rod 35 is connected between the lower end of the first support rod 31 and the lower end of the second support rod 32.

[0027] The first support rod 31 is provided with a first connecting hole 312, the side of the step 34 close to the first support rod 31 is provided with a second connecting hole 341, and the locking member 4 is connected to the second connecting hole 341 through the first connecting hole 312. The number of first connecting holes 312 matches the number of steps 34. The locking member 4 can not only lock the folding ladder 3 at the bottom frame 1, but also lock the step 34 at a set angle when the step 34 is unfolded. In addition, the second support rod 32 can also be provided with the same connecting hole. In the embodiment, the locking member 4 is a spring bolt, the end of which is provided with a limiting portion exposed to the side wall in the radial direction, and a spring is embedded in the limiting portion. When the limiting portion is pressed in the radial direction, the spring can retract into the interior, so that the locking member 4 can pass through the first connecting hole 312 and the second connecting hole 341. When the limiting portion is out of the range of the first connecting hole 312 and the second connecting hole 341, the limiting portion is popped out under the action of the spring, at which time the spring bolt cannot be pulled out, so that the step 34 is fixed at a set angle. When it is necessary to pull out the spring bolt, the limiting portion only needs to be pressed in the radial direction to make it retract, and then it can be pulled out. In addition, a plurality of locking members 4 can be arranged in the embodiment, for example, one locking member 4 is arranged corresponding to each step 34, so as to ensure the stability during use.

[0028] The bottom surface of the bottom frame 1 is provided with a first connecting piece 11 and a second connecting piece 12, and the first connecting piece 11 and the second connecting piece 12 have a space for accommodating the folding ladder 3, the first roller 311 is movably connected with the first connecting piece 11, and the second roller 321 is movably connected with the second connecting piece 12. The first roller 311 can roll along the first connecting piece 11, and the second roller 321 can roll along the second connecting piece 12, so that the folding ladder 3 can be more time-saving and labor-saving when being pulled out and put in.

[0029] The cross sections of the first connecting piece 11 and the second connecting piece 12 are both "N" shapes, the openings of the first connecting piece 11 and the second connecting piece 12 are opposite, the size of the opening of the first connecting piece 11 matches the first roller 311, and the size of the opening of the second connecting piece 12 matches the second roller 321, so that the first connecting piece 11 and the second connecting piece 12 can also play a guiding role.

[0030] The bottom frame 1 is provided with a box 5 below, and the box 5 is provided with hooks 51 at positions corresponding to the folding ladder 3 on the side surface, and in the embodiment, two hooks 51 are provided. When the folding ladder 3 is pulled out for use, the fixed rod 35 can be hung on the hook 51 as a fixed fulcrum. After the folding ladder 3 is fully unfolded, the fixed rod 35 is hung on the hook 51, at this time, the first support rod 31 and the second support rod 32 are inclined relative to the ground, and form a triangular stable structure with the box 5 and the ground, so that more steps 34 can be provided to meet the use of the carriage 2 which is higher from the ground.

[0031] The step 34 comprises a step 34 body, two first connecting shafts 343 respectively arranged on opposite sides of the step 34 body, and two second connecting shafts 344 respectively arranged on opposite sides of the step 34 body; one of the first connecting shafts 343 is connected with the first support rod 31, and the other first connecting column is connected with the second support rod 32. The two second connecting shafts 344 are respectively connected with two connecting rods 36.

[0032] The first connecting piece 11 is provided with a first locking hole 13 at one end close to the edge of the vehicle compartment 2, and the end of the first supporting rod 31 is provided with a second locking hole 313 corresponding to the first locking hole 13 (in the unfolded state, the second locking hole 313 is located at the lower end of the first supporting rod 31). The second connecting piece 12 is provided with a third locking hole 14 at one end close to the edge of the vehicle compartment 2, and the end of the second supporting rod 32 is provided with a fourth locking hole 322 corresponding to the third locking hole 14 (in the unfolded state, the fourth locking hole 322 is located at the lower end of the second supporting rod 32). When the folding ladder 3 is placed at the bottom of the bottom frame 1, the locking piece 4 is inserted through the first locking hole 13 and the second locking hole 313, or the locking piece 4 is inserted through the third locking hole 14 and the fourth locking hole 322, so that the folding ladder 3 is locked at the bottom of the bottom frame 1. Of course, two locking pieces 4 can also be used at the same time, one of which is inserted through the first locking hole 13 and the second locking hole 313, and the other is inserted through the third locking hole 14 and the fourth locking hole 322.

[0033] In this embodiment, the position of the folding ladder 3 corresponds to the door of the vehicle compartment 2. When the folding ladder 3 is used, the locking piece 4 is pulled out, then the folding ladder 3 is pulled out, so that the fixing rod 35 is hung on the hook 51, then the pedal 34 is rotated to a certain angle, and then the locking piece 4 is inserted through the first connecting hole 312 and the second connecting hole 341 to lock the folding ladder 3. When not in use, the folding ladder 3 is rotated and folded and placed back at the bottom of the bottom frame 1. In addition, when the folding ladder 3 is pulled out, the folding ladder 3 can also be completely pulled out and moved to other positions for use, which is more flexible.

[0034] The folding ladder 3 is movably connected to the bottom frame 1, and when needed, the folding ladder 3 is directly pulled out, so that the first supporting rod 31 and the second supporting rod 32 are in contact with the ground and the pedal 34 is unfolded. When folded, the pedal 34 can be quickly placed back at the bottom of the bottom frame 1, which is convenient and fast. The two ends of the folding ladder 3 are in contact with the box 5 and the ground respectively, forming a stable triangular structure, and multiple pedals 34 can be provided, which has strong carrying capacity and is suitable for high motor homes. On the other hand, the folding ladder 3 of the utility model can also be completely separated from the structure of the vehicle compartment 2 for independent use, which is flexible and has high versatility.

[0035] In the description of the utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, structure and operation, therefore it cannot be understood as a limitation of the utility model.

[0036] In addition, the terms "first", "second", etc. are only used for descriptive purposes and should not be construed as indicating or implying relative importance or an implied indication of the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0037] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] Although the description of the present application is combined with the above specific embodiments, it is obvious that many substitutions, modifications and changes can be made according to the above content for those skilled in the art. Therefore, all such alternatives, improvements and changes are included in the scope of the appended claims.

Claims

1. A vehicle body structure having a stowable folding ladder, characterized by, The utility model provides a folding ladder, which comprises a bottom frame, a carriage arranged on the bottom frame, a folding ladder movably connected to the bottom of the bottom frame, and a locking member for locking the folding ladder.

2. The vehicle body structure with a stowed folding ladder according to claim 1, wherein, The fixing rod is arranged at least one, and is connected between the end of the first supporting rod and the end of the second supporting rod.

3. The vehicle bed structure with a stowable folding ramp according to claim 2, wherein, The first supporting rod is provided with a first connecting hole, the side of the step close to the first supporting rod is provided with a second connecting hole, and the locking member is connected to the second connecting hole through the first connecting hole.

4. The vehicle bed structure with a stowable folding ramp according to claim 1, wherein, The bottom surface of the bottom frame is provided with a first connecting member and a second connecting member, and the first connecting member and the second connecting member have a space for accommodating the folding ladder.

5. The vehicle bed structure with stowable folding steps according to claim 4, wherein, The cross section of the first connecting member and the second connecting member is a U shape.

6. The vehicle bed structure with stowable folding steps according to claim 1, wherein, The bottom of the bottom frame is provided with a box, and the side of the box corresponds to the position of the folding ladder.

7. The vehicle bed structure with stowable folding ramp of claim 1, wherein, The connecting rod is provided with two, and is connected to the opposite sides of the step.

8. The vehicle bed structure with a stowed folding ladder of claim 7, wherein, The step comprises a step body, two first connecting shafts arranged on the opposite sides of the step body, and two second connecting shafts arranged on the opposite sides of the step body.

9. The vehicle bed structure with a stowable folding ramp of claim 4, wherein, One of the first connecting shafts is connected with the first supporting rod, and the other first connecting shaft is connected with the second supporting rod. The end of the first connecting member close to the edge of the carriage is provided with a first locking hole for locking the folding ladder, and the end of the first supporting rod is provided with a second locking hole corresponding to the first locking hole. The end of the second connecting member close to the edge of the carriage is provided with a third locking hole for locking the folding ladder, and the end of the second supporting rod is provided with a fourth locking hole corresponding to the third locking hole.

Citation Information

Patent Citations

  • Touring car folding step pushed by electric pole

    CN221340419U