Winch labor-saving type trunk and recreational vehicle with same
By using a winch-driven, labor-saving tail box design and combining fixed and movable pulleys, the problem of bulky hydraulic lifting structures is solved, resulting in more labor-saving tail box lifting and reducing energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI YONGTENG AUTOMOBILE TECHNOLOGY CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-06-09
AI Technical Summary
The existing hydraulic lifting structure for RV tail boxes is bulky and requires a large lifting force, resulting in high energy consumption.
The rear cargo box adopts a winch-type labor-saving design, which uses the cooperation of fixed pulleys and movable pulleys to raise and lower the cargo box by winding or unwinding the rope, thereby reducing the force required for lifting and lowering.
It reduces energy consumption, improves the ease of lifting, has a reasonable structural design, and makes lifting the box and support frame easier.
Smart Images

Figure CN224335727U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of RV equipment, and in particular to a winch-type labor-saving rear tail box and an RV having the same. Background Technology
[0002] A motorhome, also known as a "home on wheels," combines the functions of a "house" and a "vehicle," but its primary attribute is still that of a vehicle. It is a type of vehicle that is mobile and equipped with the essential facilities for living.
[0003] There are many types of motorhomes available, with a wide variety of functions. For example, some motorhomes use a hydraulic lift to install a rear storage box, which can be used to store items and hang tools such as bicycles or motorcycles. However, the hydraulic lift structure is relatively bulky and usually requires a large lifting force to lift a heavy rear storage box, which poses a serious challenge to the motorhome's energy consumption.
[0004] Therefore, it is necessary to develop a hydraulically tilting rear cargo box and a motorhome equipped with it to solve the aforementioned technical problems. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide a winch-type labor-saving rear tail box and a motorhome with it, which effectively overcomes the defects of the prior art.
[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:
[0007] A winch-operated, labor-saving rear tail box includes a fixed frame, a support frame, a winch, a pull rope, a fixed pulley, a movable pulley, and a box body. The box body is mounted on the upper end of the support frame, and the support frame is located on one side of the fixed frame and is slidably connected to the fixed frame vertically. Two fixed pulleys are fixed to both ends of the upper end of the fixed frame via wheel frames rotatably mounted thereto. The movable pulley is fixed to the middle of one side of the support frame via wheel frames rotatably mounted thereto. One end of the pull rope is connected and fixed to one end of the box body. The other end of the pull rope passes sequentially over the fixed pulley, the movable pulley, and another fixed pulley above one end of the rope, and then extends downward and into the inner cavity of the other end of the box body. The winch is mounted in the inner cavity of the other end of the box body, and the other end of the pull rope is wound around the winch.
[0008] Based on the above technical solution, the present invention can be further improved as follows.
[0009] Furthermore, the aforementioned fixing frame is a vertically arranged, gate-shaped frame.
[0010] Furthermore, an assembly frame extending vertically upward is fixed to one side of the aforementioned support frame, and the assembly frame and the aforementioned fixed frame are slidably assembled vertically.
[0011] Furthermore, each of the two ends of the aforementioned fixing frame has a vertically extending groove on the side where the two ends of the mounting frame are close to each other, and the two ends of the aforementioned mounting frame are respectively embedded in the grooves at the corresponding ends.
[0012] Furthermore, rollers are installed at intervals on one or both sides of the groove wall, and the assembly frame makes rolling contact with the rollers.
[0013] Furthermore, the aforementioned support frame protrudes from the other side of the aforementioned housing.
[0014] Furthermore, locking pins are horizontally inserted through the vertical beams at any one or both ends of the aforementioned fixing frame, and the lower end of the aforementioned assembly frame is provided with a horizontally inserted insertion hole. When the aforementioned assembly frame rises to the upper limit position relative to the aforementioned fixing frame, the aforementioned locking pins are inserted into the insertion hole to fix the two together.
[0015] Furthermore, the aforementioned box body has a hollowed-out area extending to its lower end, and a spare tire is installed in the hollowed-out area.
[0016] Furthermore, the aforementioned winch is an electric winch.
[0017] The beneficial effects of this utility model are: reasonable structural design, easier lifting of the box and support frame, and reduced energy consumption. Attached Figure Description
[0018] Figure 1 This is a diagram showing the state of the winch-type rear tail box of this utility model after the box body is raised.
[0019] Figure 2 This is a schematic diagram of the back structure of the winch-type labor-saving rear tail box of this utility model after the box body is raised.
[0020] Figure 3 This is a diagram showing the state of the winch-type rear tail box of this utility model after the box body has been lowered.
[0021] Figure 4 This is a schematic diagram of the back structure of the winch-type rear tail box of this utility model after the box body has been lowered.
[0022] The attached diagram lists the components represented by each number as follows:
[0023] 1. Fixed frame; 2. Support frame; 3. Pulling rope; 4. Fixed pulley; 5. Movable pulley; 6. Box body; 7. Spare tire; 11. Slide groove; 21. Assembly frame. Detailed Implementation
[0024] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.
[0025] Example
[0026] like Figure 1 , 2 As shown in Figures 3 and 4 Figure 4 (The middle pulling rope 3 is not connected to the movable pulley 5). The winch-type rear tail box of this embodiment includes a fixed frame 1, a support frame 2, a winch, a pulling rope 3, a fixed pulley 4, a movable pulley 5, and a box body 6. The box body 6 is mounted on the upper end of the support frame 2. The support frame 2 is located on one side of the fixed frame 1 and is slidably connected to the fixed frame 1. There are two fixed pulleys 4, which are fixed to the two ends of the upper end of the fixed frame 1 by wheel frames that are rotatably assembled with them. The movable pulley 5 is fixed to the middle of one side of the support frame 2 by wheel frames that are rotatably assembled with it. One end of the pulling rope 3 is connected and fixed to one end of the box body 6. The other end of the pulling rope 3 passes sequentially over the fixed pulley 4, the movable pulley 5, and another fixed pulley 4 above one end, and then extends downward and into the inner cavity of the other end of the box body 6. The winch is mounted in the inner cavity of the other end of the box body 6, and the other end of the pulling rope 3 is wound around the winch.
[0027] In this embodiment, the winch-operated, labor-saving tail box uses a winch to wind up or unwind the other end of the pull rope 3. During winding, since one end of the pull rope 3 is fixed, the exposed section of the rope shortens, pulling the movable pulley 5 and causing the support frame 2 and the mounted box 6 to move upwards relative to the fixed frame 1. During unwinding, the support frame 2 and the box 6 descend under their own weight. Due to the cooperation of the fixed pulley 4 and the movable pulley 5, half the effort is saved. The overall structural design is reasonable, making the lifting and lowering of the box and support frame more effortless and reducing energy consumption.
[0028] In this embodiment, the aforementioned fixing frame 1 is a vertically arranged door-shaped frame with a simple structural design.
[0029] In this embodiment, an upwardly extending assembly frame 21 is fixed to one side of the support frame 2, and the assembly frame 21 is slidably assembled with the fixed frame 1. The assembly frame 21 is vertically arranged and extends into the door-shaped fixed frame 1, forming a relatively stable upward and downward sliding assembly with the fixed frame 1.
[0030] In a preferred embodiment, the two ends of the fixed frame 1 are provided with vertically extending grooves 11 on the side where the vertical beams are close to each other, and the two ends of the assembly frame 21 are respectively embedded in the grooves 11 at the corresponding ends.
[0031] In the above implementation scheme, the assembly frame 21 is a rectangular frame with its two ends embedded in the grooves 11 of the vertical beams at both ends of the fixed frame 1. Under the constraint of the grooves 11, the assembly frame 21 will not wobble relative to the sides of the fixed frame 1, or the wobble amplitude is very small, so that the assembly frame 21 and the support frame 2 are tightly assembled and slide up and down smoothly.
[0032] In a preferred embodiment, rollers (represented by b in the figure) are installed at intervals on one or both sides of the groove wall of the groove 11, and the mounting frame 21 makes rolling contact with the rollers.
[0033] In the above implementation scheme, the roller design allows the assembly frame 21 to slide up and down with the groove 11 of the fixed frame 1, forming a rolling engagement with the roller, which effectively reduces friction and further reduces energy consumption.
[0034] In this embodiment, the support frame 2 protrudes from the other side of the housing 6. The protruding part can be used as a platform for placing bicycles, motorcycles, and other tools.
[0035] In a preferred embodiment, locking pins (represented by a in the figure) are provided horizontally through the vertical beams at any one or both ends of the fixed frame 1. The lower end of the assembly frame 21 is provided with a horizontally through insertion hole. When the assembly frame 21 rises to the upper limit position relative to the fixed frame 1, the locking pin is inserted into the insertion hole to fix the two together.
[0036] In this embodiment, the aforementioned housing 6 has a hollowed-out area extending to its lower end, and a spare tire 7 is installed in the hollowed-out area. The spare tire 7 is equipped with a dedicated spare tire bracket, which is fixed to the assembly frame 21.
[0037] In this embodiment, the winch is an electric winch of a suitable model.
[0038] Example 2
[0039] The RV in this embodiment includes the winch-operated, labor-saving rear cargo box of Embodiment 1. The mounting bracket 1 is attached to the rear of the RV. It can be installed by welding or bolting.
[0040] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0043] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0044] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0045] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A winch powered tailgate characterized by: The system includes a fixed frame (1), a support frame (2), a winch, a pulling rope (3), a fixed pulley (4), a movable pulley (5), and a housing (6). The housing (6) is mounted on the upper end of the support frame (2). The support frame (2) is located on one side of the fixed frame (1) and is slidably connected to the fixed frame (1) vertically. There are two fixed pulleys (4), which are fixed to the two ends of the upper end of the fixed frame (1) by wheel frames that are rotatably mounted to them. The movable pulley (5) is connected to the fixed frame (1) by its rotating mechanism. The wheel frame of the movable assembly is fixed to the middle of one side of the support frame (2). One end of the pulling rope (3) is connected and fixed to one end of the box (6). The other end of the pulling rope (3) passes through the fixed pulley (4), the movable pulley (5) and another fixed pulley (4) above one end in sequence, and then extends downward and into the inner cavity of the other end of the box (6). The winch is installed in the inner cavity of the other end of the box (6). The other end of the pulling rope (3) is wound around the winch.
2. A winch power take off rear cargo box as claimed in claim 1 wherein: The fixed frame (1) is a vertically arranged gate-shaped frame.
3. A winch power take off rear cargo box as claimed in claim 2 wherein: One side of the support frame (2) is fixed with an upwardly extending assembly frame (21), and the assembly frame (21) and the fixed frame (1) are slidably assembled together.
4. A winch power take off rear cargo box as claimed in claim 3 wherein: The two ends of the fixed frame (1) are provided with vertically extending grooves (11) on the side where the vertical beams of both ends are close to each other, and the two ends of the assembly frame (21) are respectively embedded in the grooves (11) at the corresponding ends.
5. A winch power take off rear cargo box as claimed in claim 4 wherein: Rollers are installed at intervals on one or both sides of the groove (11), and the assembly frame (21) makes rolling contact with the rollers.
6. A winch power take off rear cargo box as claimed in claim 3 wherein: The support frame (2) protrudes from the other side of the housing (6).
7. A winch power take off rear cargo box as claimed in claim 3 wherein: Locking pins are horizontally inserted through the vertical beams at one or both ends of the fixing frame (1). The lower end of the assembly frame (21) is provided with a horizontally inserted insertion hole. When the assembly frame (21) rises to the upper limit position relative to the fixing frame (1), the locking pin is inserted into the insertion hole to fix the two together.
8. A winch power take off rear cargo box as claimed in any one of claims 1 to 7 characterised by: The box (6) has a hollow area extending to its lower end in the middle, and a spare tire (7) is installed in the hollow area.
9. A winch power take off rear cargo box as claimed in any one of claims 1 to 7 characterised by: The winch is an electric winch.
10. A recreational vehicle characterized by: Includes the winch-operated, labor-saving tail box as described in any one of claims 1 to 9.