Container tail door inhaul cable limiting structure

Abstract

The invention provides a cargo tank tail door inhaul cable limiting structure which comprises an inhaul cable assembly, the two ends of the inhaul cable assembly are rotationally connected to a cargo tank stand column assembly and a cargo tank tail door assembly respectively, and the cargo tank stand column assembly and the cargo tank tail door assembly are connected with the two ends of an air spring assembly respectively; the inhaul cable assembly comprises an inhaul cable core wire, inhaul cable connectors are fixedly connected to the two ends of the inhaul cable core wire, and the inhaul cable connectors are fixedly connected with the container stand column assembly and the container tail door assembly respectively. The left side and the right side of the cargo tank tail door assembly are fixedly connected with inhaul cable limiting plates, and the inhaul cable limiting plates are used for limiting the inhaul cable assembly and the gas spring assembly when the cargo tank tail door assembly is opened and closed. The problems that some existing pickup truck cargo box tail doors are not provided with buffer structures, and meanwhile under some extreme working conditions, the shaking amount can be increased, so that inhaul cables deviate left and right along with shaking and are prone to disengaging from gaps, and abnormal sounds, pulling plate friction and other losses are generated are solved.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a cargo box tailgate cable limiting structure. Background Technology

[0002] The cargo box of a pickup truck, as the carrier of goods, requires high strength and rigidity, and its structure is usually complex and heavy. The cargo box door is generally a flip-down design, requiring manual operation to open and close. After unlocking, the tailgate flips downwards under its own weight, causing significant impact damage due to its weight. Furthermore, during vehicle operation, in extreme off-road conditions such as washboard roads, the Y-axis sway of the tailgate increases significantly, causing the cable to shift laterally and easily come loose from the gap, resulting in noise, friction, and other wear and tear. Therefore, a new tailgate cable limiting structure is needed. Summary of the Invention

[0003] The purpose of this invention is to provide a cargo box tailgate cable limiting structure to solve the problems of some existing pickup truck cargo box tailgates not having a buffer structure, and the increased shaking under some extreme working conditions causing the cable to shift left and right with the shaking, easily coming out of the gap, as well as abnormal noise, friction of the pull plate and other wear problems.

[0004] The technical solution adopted by this invention to solve its technical problem is: A cargo box tailgate cable limiting structure includes a cable assembly, the two ends of which are rotatably connected to a cargo box column assembly and a cargo box tailgate assembly, respectively, and the cargo box column assembly and the cargo box tailgate assembly are respectively connected to the two ends of a gas spring assembly. The cable assembly includes a cable core wire, and cable connectors are fixedly connected to both ends of the cable core wire. The cable connectors are fixedly connected to the cargo box column assembly and the cargo box tailgate assembly, respectively. The tailgate assembly of the cargo box is fixedly connected to the left and right sides with cable limit plates, which are used to limit the cable assembly and gas spring assembly when the tailgate assembly of the cargo box is opened and closed.

[0005] Preferably, in conjunction with the above scheme, the cable joint includes a connecting rod and a connecting plate. The two ends of the cable core are respectively fixedly connected to a set of connecting rods. A rubber tube is sleeved on the cable core. The connecting plate is rotatably connected to the cargo box column assembly and the cargo box tailgate assembly respectively by stepped bolts.

[0006] Preferably, in conjunction with the above scheme, a heat shrink tubing is fixedly sleeved on the connecting rod, the heat shrink tubing comprising a thick section and a thin section, the thick section being sleeved on the connecting rod, and the thin section being sleeved on a rubber tube.

[0007] Preferably, in conjunction with the above scheme, the stepped bolt is further provided with a flat washer, a disc washer, and a first internal tooth locking washer in sequence, wherein the first internal tooth locking washer is located on the side near the cargo box upright assembly and the cargo box tailgate assembly.

[0008] Preferably, in conjunction with the above scheme, hinges are fixedly connected to the lower parts of both the left and right sides of the cargo box tailgate assembly, and the lower part of the cargo box upright assembly is rotatably connected to the hinges.

[0009] Preferably, in conjunction with the above scheme, the gas spring assembly includes a gas spring body, both ends of which are fixedly connected to rotating bushings, and ball head bolts are rotatably connected to the rotating bushings. The two sets of ball head bolts are respectively fixedly connected to the hinge and the cargo box column assembly by screw connections.

[0010] Preferably, in conjunction with the above scheme, the ball head bolt is sequentially fitted with a fastening sleeve, a nut, and a second internal tooth locking washer. The nut is used to fasten the ball head bolt to the hinge and the cargo box column assembly respectively. The fastening sleeve is disposed between the rotating bushing and the nut. The second internal tooth locking washer is disposed on the side close to the cargo box column assembly and the hinge.

[0011] Preferably, in conjunction with the above scheme, the cable limiting plate includes a positioning part, a fixing part, a first limiting part, and a second limiting part arranged in sequence.

[0012] Preferably, in conjunction with the above scheme, the positioning part is bent and disposed on one side of the fixing part, and the tailgate assembly of the cargo box is provided with a positioning hole corresponding to the position of the fixing part, and the positioning part is inserted into the positioning hole.

[0013] Preferably, in combination with the above scheme, the fixing part, the first limiting part, and the second limiting part are connected to form a U-shaped limiting groove to limit the cable assembly and the gas spring assembly.

[0014] The beneficial effects of this invention are as follows: This invention provides a tailgate cable limiting structure for cargo boxes. By designing a tailgate cable mechanism with positioning and constraint functions and a gas spring, it simultaneously achieves reliable load-bearing capacity of the tailgate and anti-detachment function during the dynamic movement of the cable, while ensuring the stability of the tailgate connection structure. Under extreme working conditions, it can reduce the Y-axis sway of the tailgate, preventing the cable from shifting left and right and coming out of the gap due to swaying, and also reducing abnormal noise and frictional wear of the pull plate.

[0015] The present invention will now be described in more detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] Figure 1 This is a diagram of a cargo box tailgate cable limiting structure according to the present invention.

[0017] Figure 2 This is a structural diagram of another direction of the cargo box tailgate cable limiting structure of the present invention.

[0018] Figure 3 This is a top view of a cargo box tailgate cable limiting structure according to the present invention.

[0019] Figure 4 This is a structural diagram of the cable assembly in this invention.

[0020] Figure 5 This is a cross-sectional view of the cable assembly in this invention.

[0021] Figure 6 This is a structural diagram of the cable joint in this invention.

[0022] Figure 7 This is a structural diagram of the gas spring assembly in this invention.

[0023] Figure 8 This is a structural diagram of the hinge in this invention.

[0024] Figure 9 This is a structural diagram of the cable limiting plate in this invention.

[0025] Figure 10 This is an exploded view of the cargo box column assembly in this invention.

[0026] Figure 11 This is an exploded view of the cargo box tailgate assembly in this invention.

[0027] Figure 12 This is a structural diagram of the inner panel of the cargo box tailgate in this invention.

[0028] Among them, 1. Cable assembly; 2. Gas spring assembly; 3. Hinge; 4. Cable limiting plate; 5. Hinge bolt; 6. Projection welded nut seat; 7. Hinge reinforcing plate; 10. Cargo box upright assembly; 11. Cable core wire; 12. Rubber tube; 13. Heat shrink tubing; 14. Cable connector; 15. Step bolt; 16. Flat washer; 17. Disc washer; 18. First internal tooth locking washer; 20. Cargo box tailgate assembly; 21. Gas spring body; 22. Rotating bushing; 23. Ball head bolt; 24. Dust cover; 25. Guide boss; 26. Guide slope; 31. First bent edge; 32. Fixing plate; 33. ... 41. Two-fold bend; 42. Positioning part; 43. Fixing part; 44. First limiting part; 45. Second limiting part; 101. Inner plate of cargo box column; 102. Outer plate of cargo box column; 103. Connecting edge; 104. Connecting plate reinforcing plate; 131. Thick pipe section; 132. Thin pipe section; 141. Connecting rod; 142. Connecting plate; 201. Inner plate of cargo box tail door; 202. Outer plate of cargo box tail door; 203. Middle reinforcing beam; 204. Reinforcing crossbeam; 205. Reinforcing vertical beam; 311. Hinge bolt hole; 321. Gas spring bolt hole; 2011. Positioning hole; 2021. Support plate; 2022. Weight reduction hole. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. It should be noted that, unless otherwise specified, the implementation methods and features in the implementation methods in this disclosure can be combined, separated, interchanged, and / or rearranged. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] In the accompanying drawings, for clarity and / or descriptive purposes, the dimensions and relative dimensions of the parts may be exaggerated, and the same reference numerals denote the same parts.

[0031] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “(the)” are also intended to include the plural forms. Furthermore, when the terms “comprising” and / or “including” and variations thereof are used in this specification, it indicates the presence of the stated features, integrals, steps, operations, parts, components, and / or groups thereof, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, parts, components, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms rather than as terms of degree, thus explaining the inherent biases in measurements, calculated values, and / or provided values ​​that would be recognized by one of ordinary skill in the art.

[0032] The core of the "cargo box tailgate cable limiting structure" described in this invention lies in a specially designed system for pickup trucks, providing stable connection and limiting of the pickup truck's cable assembly and structural reinforcement of the pickup truck tailgate. This structure aims to prevent the cargo box tailgate from rapidly flipping downwards under its own weight after unlocking, thus preventing impact damage to the structure; simultaneously, it prevents increased Y-axis sway of the cargo box tailgate during vehicle operation, which could cause the cable to shift left and right due to swaying and slip out of the gap, resulting in abnormal noise, friction on the pull plate, and other wear and tear problems.

[0033] With the gradual relaxation of national restrictions on pickup trucks, the pickup truck market is showing significant growth. This type of vehicle, with its superior practicality and off-road capability, demonstrates unique advantages in specific application scenarios such as equipment maintenance and repair, and outdoor adventure.

[0034] Pickup trucks offer several advantages: superior cargo capacity, an open cargo bed for transporting large items (building materials, motorcycles, camping equipment, etc.), and practicality far exceeding that of SUVs and sedans. Users purchase pickup trucks seeking versatility, catering to daily commutes as well as road trips, camping, and hauling, making them particularly suitable for middle-class families and outdoor enthusiasts.

[0035] Good off-road performance: Most pickup trucks are equipped with four-wheel drive systems, high chassis and high torque engines, making them suitable for complex road conditions, such as mountains, construction sites or unpaved roads.

[0036] Ride comfort: In recent years, pickup truck interiors have been upgraded, with configurations approaching those of high-end SUVs (such as large screens, intelligent driving assistance, and luxury seats), catering to the needs of family travel.

[0037] Powerful performance and durability: Pickup trucks are typically equipped with large-displacement or turbocharged diesel / gasoline engines, offering strong towing capabilities (capable of towing RVs, yachts, etc.), making them suitable for outdoor enthusiasts and commercial use. Furthermore, their robust body structure is wear-resistant and suitable for high-intensity use.

[0038] Favorable policies and the trend of lifting restrictions: Many places in China have relaxed restrictions on pickup trucks entering cities, boosting consumer demand.

[0039] Reclassification adjustment: Some pickup trucks have been reclassified from "trucks" to "passenger vehicles," eliminating restrictions such as lettering and reflective strips, thus improving their image. At the same time, intelligent connectivity and autonomous driving functions of pickup trucks are becoming increasingly common, changing the traditional image of pickup trucks as "utility vehicles."

[0040] Cultural Symbols and Personalization: In North America, Australia, and other regions, pickup trucks represent a free and adventurous lifestyle; the culture of modification is thriving (raising the chassis, adding roll cages, etc.) to satisfy individual expression.

[0041] Pickup trucks are shifting from "production tools" to "life partners," becoming a new growth driver in the global automotive market due to their versatility, relaxed regulations, electrification, and the rise of outdoor culture. With technological advancements and changing consumer attitudes, pickup trucks are expected to further break down scenario limitations and reach a wider user base. As people's living standards improve, users are also placing higher demands on the structural design of existing pickup trucks.

[0042] Traditional pickup truck tailgate connection structures typically fall into two categories. One is the pull-plate structure: This type lacks a proper limiting mechanism, with the tailgate supported primarily by metal pull plates on both sides of the cargo box. This results in significant mechanical wear, frequent rattles, and other technical defects, leading to a poor user experience. The other is the ordinary cable structure: This type also lacks a limiting mechanism, with only cables on both sides of the cargo box supporting the tailgate. In extreme conditions such as washboard roads, the cables can easily detach from the gap between the cargo box pillar assembly and the tailgate assembly, rubbing against the sheet metal and causing rattles and wear.

[0043] In actual road tests, under extreme conditions such as reverse washboard roads, the Y-axis sway of the tailgate increases significantly, directly causing the cable to shift left and right with the swaying, making it very easy for it to come loose from the gap. The tailgate pull panel structure of traditional pickup trucks has inherent shortcomings: it is prone to abnormal noise during movement, the pull panel suffers significant friction wear, and occupies too much space; under extreme off-road scenarios, the structure is also prone to breakage and damage due to the violent left and right swaying of the tailgate, resulting in insufficient reliability.

[0044] like Figures 1 to 3 The cargo box tailgate cable limiting structure shown includes a cable assembly 1, the two ends of which are rotatably connected to the cargo box column assembly 10 and the cargo box tailgate assembly 20, respectively. The cargo box column assembly 10 and the cargo box tailgate assembly 20 are respectively connected to the two ends of the gas spring assembly 2. The cable assembly 1 includes a cable core wire 11, and cable connectors 14 are fixedly connected to both ends of the cable core wire 11. The cable connectors 14 are fixedly connected to the cargo box column assembly 10 and the cargo box tail door assembly 20, respectively. The tailgate assembly 20 is fixedly connected to cable limiting plates 4 on both sides. These plates limit the movement of the cable assembly 1 and the gas spring assembly 2 when the tailgate assembly 20 is opened or closed. In this embodiment, two sets of cable assemblies 1, gas spring assemblies 2, and cable limiting plates 4 are provided, located on the left and right sides of the cargo box respectively, to ensure the stability of the connection structure and balanced force distribution. Since the tailgate assembly 20 will flip downwards under its own weight after unlocking, and due to its significant weight, the gas spring assembly 2 provides damping to gradually open the tailgate assembly 20, preventing rigid impact damage. The presence of the gas spring assembly 2 also ensures the stability of the tailgate structure.

[0045] like Figure 10 As shown, the cargo box column assembly 10 in this embodiment includes an inner cargo box column plate 101, an outer cargo box column plate 102, and a connecting plate reinforcing plate 104. Both the inner and outer cargo box column plates 101 and 102 have a U-shaped cross-section. After welding, the inner and outer cargo box column plates 101 and 102 form a reinforcing cavity structure to ensure sufficient structural strength of the cargo box column assembly 10. The connecting plate reinforcing plate 104 is fixedly connected by welding between the connecting edges 103 of the inner and outer cargo box column plates 101 and 102, forming a sandwich structure to increase the structural strength of the connection point.

[0046] Because the tailgate assembly 20 of a pickup truck is typically made of steel or aluminum alloy, it is quite heavy. This weight translates to high inertia; frequent opening and closing of the heavy tailgate will put continuous pressure and wear on the connecting hinges and other mechanisms. If the rigidity of the cargo box pillar assembly 10 is insufficient, it may lead to component deformation, abnormal noise, or even malfunction after prolonged use. Therefore, a reinforced structure for the cargo box pillar assembly 10 is necessary to ensure the structural strength of the sheet metal and connection points, preventing cargo box component deformation.

[0047] like Figure 11 As shown, the cargo box tailgate assembly 20 in this embodiment includes a cargo box tailgate inner panel 201 and a cargo box tailgate outer panel 202. The cargo box tailgate inner panel 201 and the cargo box tailgate outer panel 202 are fixedly connected by welding. A central reinforcing beam 203 is fixedly connected to the middle of the cargo box tailgate inner panel 201 and the cargo box tailgate outer panel 202 by welding. In this embodiment, the cross-section of the central reinforcing beam 203 is a Z-shaped structure, and several sets of reinforcing ribs are spaced apart on the central reinforcing beam 203 to increase the structural rigidity.

[0048] The lower parts of the inner panel 201 and the outer panel 202 of the cargo box tailgate are fixedly connected by welding to a reinforcing beam 204, which is arranged along the width direction of the vehicle body. In this embodiment, the cross section of the reinforcing beam 204 is a Z-shaped structure, and several sets of reinforcing ribs are arranged at intervals on the reinforcing beam 204 to increase the structural rigidity.

[0049] The inner panel 201 and outer panel 202 of the cargo box tailgate are fixedly connected to the left and right sides by welding with reinforcing vertical beams 205, which are arranged along the height direction. In this embodiment, the cross-section of the reinforcing vertical beams 205 is an L-shaped structure, and several sets of reinforcing ribs are arranged at intervals on the reinforcing vertical beams 205 to increase the structural rigidity.

[0050] like Figure 12 As shown, a support plate 2021 is provided on the side of the inner panel 201 of the cargo box tailgate facing the outer panel 202 of the cargo box tailgate. The support plate 2021 is bent and disposed on the left and right sides of the inner panel 201 of the cargo box tailgate, and is located on the left and right sides of the central reinforcing beam 203. The support plate 2021 is fixedly connected to the inner side of the outer panel 202 of the cargo box tailgate by welding. In this embodiment, the support plate 2021 has an L-shaped structure, which can play a certain supporting role.

[0051] The aforementioned structure, including the inner tailgate panel 201, outer tailgate panel 202, central reinforcing beam 203, reinforcing crossbeam 204, reinforcing vertical beam 205, and support plate 2021, significantly enhances the overall structural rigidity of the tailgate assembly 20, effectively supporting and reinforcing each structure within the tailgate assembly 20. The inner tailgate panel 201 is also provided with several sets of weight-reducing holes 2022 at intervals to reduce its own weight.

[0052] The tailgate assembly 20 is essentially a large cantilever beam structure, connected to the cargo box pillar assembly 10 via hinges on both sides. It withstands complex stresses when horizontally suspended (open) or vertically suspended (closed). As a work platform, the tailgate assembly 20, when laid flat, needs to withstand the weight of an adult standing, heavy tools, or cargo. Without internal reinforcement, its panel would be severely dented or even break. Collisions may occur during loading and unloading; the internal reinforcement disperses impact forces, preventing damage to the tailgate assembly 20. When the vehicle travels on rough roads, the cargo box and tailgate experience continuous torsion and vibration. The reinforcing crossbeams 203 and reinforcing vertical beams 204 resist this torsional deformation, ensuring the tailgate does not loosen, creak, or fail to close properly after prolonged use.

[0053] Specifically, in this embodiment, in order to facilitate the assembly of the cable connector 14 with the vehicle body, the cable connector 14 is rotatably connected to the connecting edge 103 of the cargo box pillar assembly 10 and the inner panel 201 of the cargo box tailgate assembly 20.

[0054] like Figure 6 As shown, the cable connector 14 includes an integrally formed connecting rod 141 and a connecting plate 142. The two ends of the cable core wire 11 are reliably connected to the connecting rod 141 by riveting or cold forging technology. The two ends of the cable core wire 11 are respectively fixedly connected to a set of connecting rods 141. A rubber tube 12 is sleeved on the cable core wire 11. The rubber tube 12 is a flexible tube and plays a role in rust prevention and protection for the cable core wire 11. The connecting plate 142 has bolt holes for passing through stepped bolts 15. The connecting plate 142 is rotatably connected to the cargo box column assembly 10 and the cargo box tail door assembly 20 respectively through the stepped bolts 15.

[0055] like Figure 4 and Figure 5 As shown, a heat shrink tubing 13 is fixedly sleeved on the connecting rod 141. The heat shrink tubing 13 includes a thick section 131 and a thin section 132. The thick section 131 is sleeved on the connecting rod 141, and the thin section 132 is sleeved on the rubber tube 12. The heat shrink tubing 13 protects the connection between the connecting rod 141 and the rubber tube 12, and also limits and fixes the two ends of the rubber tube 12. In this embodiment, the heat shrink tubing 13 can be sleeved on the connecting rod 141 and the rubber tube 12, and then the heat shrink tubing 13 is heated. The heat shrink tubing 13 shrinks when heated, wrapping one side around the outer peripheral wall of the connecting rod 141 and the other side around the outer peripheral wall of the rubber tube 12, forming a thick section 131 and a thin section 132 with different diameters.

[0056] like Figure 4 and Figure 5 As shown, a flat washer 16, a disc washer 17, and a first internal tooth locking washer 18 are sequentially fitted on the stepped bolt 15. The first internal tooth locking washer 18 is located on the side near the cargo box column assembly 10 and the cargo box tailgate assembly 20.

[0057] The main function of the flat washer 16 is to distribute pressure and protect the surface. It distributes the tightening force of the bolt / nut across the surface of the connected parts by increasing the contact area, preventing crushing or scratching. In the application of the stepped bolt 15, although the bolt shoulder itself already has a certain bearing surface, adding the flat washer 16 further ensures uniform pressure. It provides a flat support surface, laying the foundation for the subsequent operation of the disc washer 17 and the first internal tooth locking washer 18.

[0058] The primary function of the disc washer 17 is to provide continuous elastic preload to compensate for loosening. When the stepped bolt 15 is tightened, the disc washer 17 is flattened (or over-flattened), generating a reverse elastic restoring force. This elastic force keeps the bolt connection in a "taut" state. When the connection experiences slight loosening due to vibration or temperature changes (such as bolt elongation or substrate creep), the elasticity of the disc washer can immediately compensate for this small gap, maintaining the preload without significant decrease. It is the most important line of defense against loosening, addressing the "loosening tendency."

[0059] The main function of the first internal tooth locking washer 18 is as follows: In this embodiment, the first internal tooth locking washer 18 is made of plastic. Since the first internal tooth locking washer 18 is in contact with the sheet metal surface, it can prevent wear on the cargo box upright assembly 10 and the cargo box tailgate assembly 20. The inner ring of the first internal tooth locking washer 18 has internal teeth. During installation, the internal teeth bite into the limiting groove on the peripheral wall of the stepped bolt 15, preventing the first internal tooth locking washer 18 from falling off the stepped bolt 15.

[0060] Hinges 3 are fixedly connected to the lower parts of both sides of the cargo box tailgate assembly 20, and the lower part of the cargo box upright assembly 10 is rotatably connected to the hinges 3. Figure 8 As shown, the hinge 3 has a first bent edge 31 on the side facing the cargo box column assembly 10. The first bent edge 31 has a hinge bolt hole 311, and the pivot hole 311 is used to pass through the hinge bolt 5. To increase the structural strength of the hinge connection, a set of hinge reinforcing plates 7 are fixedly connected to the left and right sides of the cargo box column assembly 10. A projection weld nut seat 6 is fixedly connected to the hinge reinforcing plate 7, and the hinge bolt 5 is screwed to the projection weld nut seat 6.

[0061] A fixing plate 32 extends from one side of the first bending edge 31. The fixing plate 32 has a set of gas spring bolt holes 321 and two sets of bolt holes. The gas spring bolt holes 321 are used to pass through ball head bolts 23, and the other two sets of bolt holes are used to pass through bolts and be fixedly connected to the left and right sides of the cargo box tailgate assembly 20. A second bending edge 33 is provided on the side of the hinge 3 facing the bottom surface of the cargo box tailgate assembly 20. The second bending edge 33 has bolt holes for passing through bolts and being fixedly connected to the bottom surface of the cargo box tailgate assembly 20.

[0062] like Figure 7As shown, in order to facilitate the assembly and fixation of the gas spring assembly 2 with the vehicle body parts, the gas spring assembly 2 includes a gas spring body 21. Both ends of the gas spring body 21 are fixedly connected to rotating bushings 22. Ball head bolts 23 are rotatably connected to the rotating bushings 22. One set of ball head bolts 23 is fixedly connected to the hinge 3 by screwing, and the other set of ball head bolts 23 is fixedly connected to the cargo box column assembly 10 by screwing.

[0063] like Figure 3 and Figure 7 As shown, a set of guide bosses 25 are fixedly provided on the peripheral wall of the gas spring body 21. A guide ramp 26 is provided on the side of the guide bosses 25 facing the cable assembly 1. The guide ramp 26 is used to prevent the cable from going around the right side of the gas spring assembly 2 during the closing process and deviating from the folding trajectory.

[0064] To facilitate assembly with the vehicle body, a dust cover 24, a nut 25, and a second internal tooth locking washer 26 are sequentially fitted onto the ball head bolt 23. The nut 25 is used to fasten the ball head bolt 23 to the hinge 3 and the cargo box column assembly 10, respectively. The fastening sleeve 23 is positioned between the rotating bushing 22 and the nut 23. The second internal tooth locking washer 26 is positioned on the side closest to the cargo box column assembly 10 and the hinge 3. In this embodiment, the dust cover 24 protects the ball head bolt 23 from dust and debris contaminating its outer surface and the inner surface of the rotating bushing 22. The second internal tooth locking washer 26 is made of plastic. Because the second internal tooth locking washer 26 fits against the sheet metal surface and the hinge, it helps prevent wear on the cargo box column assembly 10 and the hinge 3.

[0065] like Figure 9 As shown, to better position and securely assemble with the cargo box tailgate assembly 20, the cable limiting plate 4 includes a positioning part 41, a fixing part 42, a first limiting part 43, and a second limiting part 44 arranged sequentially. In this embodiment, the fixing part 42 has bolt holes for bolts to pass through and securely connect with the cargo box tailgate assembly 20. The surface of the cable limiting plate 4 is treated with black coating, achieving a corrosion resistance of up to 720 hours without rust.

[0066] The positioning part 41 is bent and disposed on one side of the fixing part 42. The cargo box tailgate assembly 20 is provided with a positioning hole 2011 corresponding to the position of the fixing part 42. Specifically, a set of positioning holes 2011 is provided on both the left and right sides of the cargo box tailgate inner plate 201. During assembly, the positioning part 41 is first inserted into the positioning hole 2011, and then the cable limiting plate 4 is fixed to the cargo box tailgate inner plate 201 by bolts. The positioning hole 2011 can also prevent the cable limiting plate 4 from rotating under force when tightening the bolts.

[0067] To better limit the movement of the cable assembly 1 and the gas spring assembly 2, and to prevent the cable assembly 1 from disengaging from its folding range after the tailgate is closed, the fixing part 42, the first limiting part 43, and the second limiting part 44 are connected to form a U-shaped limiting groove to limit the movement of the cable assembly 1 and the gas spring assembly 2. During the tailgate closing process, the cable moves along the limiting groove of the cable limiting plate 4, which controls the cable trajectory, effectively avoiding interference and friction with the tailgate side sheet metal, thereby preventing wear on the cable surface and ensuring the long-term performance and reliability of the cable.

[0068] This invention achieves three key technical benefits through optimized structural design: 1. Precise control of the tailgate cable assembly's movement path; 2. Effective prevention of the cable from slipping out of the gap during vehicle operation; 3. Strict limitation of the cable's bending radius to within 25mm. This design significantly reduces the installation space required while ensuring the cable's functional integrity, and is characterized by its simple structure and high practicality.

[0069] In the description of this invention, it should be understood that terms such as “center,” “longitudinal,” “lateral,” “vertical,” “horizontal,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “bottom,” “inner,” “outer,” “top,” “one end,” “one side,” “both ends,” “both sides,” “clockwise,” and “counterclockwise” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0070] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this patent, unless otherwise stated, "a plurality of" means two or more.

[0071] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0072] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct applications in other situations, fall within the protection scope of the present invention.

Claims

1. A cargo box tailgate cable limiting structure, comprising a cable assembly (1), characterized in that, The two ends of the cable assembly (1) are rotatably connected to the cargo box column assembly (10) and the cargo box tail door assembly (20), respectively. The cargo box column assembly (10) and the cargo box tail door assembly (20) are respectively connected to the two ends of the gas spring assembly (2). The cable assembly (1) includes a cable core wire (11), and cable connectors (14) are fixedly connected to both ends of the cable core wire (11). The cable connectors (14) are fixedly connected to the cargo box column assembly (10) and the cargo box tail door assembly (20) respectively. The tailgate assembly (20) is fixedly connected to the left and right sides by cable limiting plates (4). The cable limiting plates (4) are used to limit the cable assembly (1) and the gas spring assembly (2) when the tailgate assembly (20) is opened and closed.

2. The cargo box tailgate cable limiting structure according to claim 1, characterized in that, The cable connector (14) includes a connecting rod (141) and a connecting plate (142). The two ends of the cable core (11) are respectively fixedly connected to a set of connecting rods (141). A rubber tube (12) is sleeved on the cable core (11). The connecting plate (142) is rotatably connected to the cargo box column assembly (10) and the cargo box tail door assembly (20) respectively by step bolts (15).

3. The cargo box tailgate cable limiting structure according to claim 2, characterized in that, A heat shrink tube (13) is fixedly sleeved on the connecting rod (141). The heat shrink tube (13) includes a thick tube section (131) and a thin tube section (132). The thick tube section (131) is sleeved on the connecting rod (141), and the thin tube section (132) is sleeved on the rubber tube (12).

4. The cargo box tailgate cable limiting structure according to claim 2, characterized in that, The stepped bolt (15) is also fitted with a flat washer (16), a disc washer (17), and a first internal tooth locking washer (18) in sequence. The first internal tooth locking washer (18) is located on the side close to the cargo box column assembly (10) and the cargo box tail door assembly (20).

5. The cargo box tailgate cable limiting structure according to claim 1, characterized in that, The lower parts of the left and right sides of the cargo box tailgate assembly (20) are fixedly connected with hinges (3), and the lower part of the cargo box column assembly (10) is rotatably connected to the hinges (3).

6. The cargo box tailgate cable limiting structure according to claim 1, characterized in that, The gas spring assembly (2) includes a gas spring body (21), and both ends of the gas spring body (21) are fixedly connected to rotating bushings (22). Ball head bolts (23) are rotatably connected to the rotating bushings (22). The two sets of ball head bolts (23) are respectively fixedly connected to the hinge (3) and the cargo box column assembly (10) by screwing.

7. The cargo box tailgate cable limiting structure according to claim 6, characterized in that, The ball head bolt (23) is fitted with a fastening sleeve (24), a nut (25), and a second internal tooth locking washer (26) in sequence. The nut (25) is used to fasten the ball head bolt (23) to the hinge (3) and the cargo box column assembly (10) respectively. The fastening sleeve (23) is located between the rotating bushing (22) and the nut (23). The second internal tooth locking washer (26) is located on the side close to the cargo box column assembly (10) and the hinge (3).

8. The cargo box tailgate cable limiting structure according to claim 1, characterized in that, The cable limiting plate (4) includes a positioning part (41), a fixing part (42), a first limiting part (43), and a second limiting part (44) arranged in sequence.

9. The cargo box tailgate cable limiting structure according to claim 8, characterized in that, The positioning part (41) is bent and disposed on one side of the fixing part (42). The tailgate assembly (20) of the cargo box is provided with a positioning hole (2011) corresponding to the position of the fixing part (42). The positioning part (41) is inserted into the positioning hole (2011).

10. The cargo box tailgate cable limiting structure according to claim 8, characterized in that, The fixing part (42), the first limiting part (43), and the second limiting part (44) are connected to form a U-shaped limiting groove to limit the cable assembly (1) and the gas spring assembly (2).

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